Search Results for author: Jun Wang

Found 531 papers, 169 papers with code

Detecting Adversarial Examples via Key-based Network

no code implementations2 Jun 2018 Pinlong Zhao, Zhouyu Fu, Ou wu, QinGhua Hu, Jun Wang

In contrast to existing defense methods, the proposed method does not require knowledge of the process for generating adversarial examples and can be applied to defend against different types of attacks.

Learning to Design Games: Strategic Environments in Reinforcement Learning

no code implementations5 Jul 2017 Haifeng Zhang, Jun Wang, Zhiming Zhou, Wei-Nan Zhang, Ying Wen, Yong Yu, Wenxin Li

In typical reinforcement learning (RL), the environment is assumed given and the goal of the learning is to identify an optimal policy for the agent taking actions through its interactions with the environment.

reinforcement-learning Reinforcement Learning (RL)

A Study of AI Population Dynamics with Million-agent Reinforcement Learning

no code implementations13 Sep 2017 Yaodong Yang, Lantao Yu, Yiwei Bai, Jun Wang, Wei-Nan Zhang, Ying Wen, Yong Yu

We conduct an empirical study on discovering the ordered collective dynamics obtained by a population of intelligence agents, driven by million-agent reinforcement learning.

reinforcement-learning Reinforcement Learning (RL)

Multi-view Registration Based on Weighted Low Rank and Sparse Matrix Decomposition of Motions

no code implementations25 Sep 2017 Congcong Jin, Jihua Zhu, Yaochen Li, Shanmin Pang, Lei Chen, Jun Wang

Then, it proposes the weighted LRS decomposition, where each block element is assigned with one estimated weight to denote its reliability.

Neural Text Generation: Past, Present and Beyond

no code implementations15 Mar 2018 Sidi Lu, Yaoming Zhu, Wei-Nan Zhang, Jun Wang, Yong Yu

This paper presents a systematic survey on recent development of neural text generation models.

Benchmarking reinforcement-learning +2

Bidding Machine: Learning to Bid for Directly Optimizing Profits in Display Advertising

no code implementations1 Mar 2018 Kan Ren, Wei-Nan Zhang, Ke Chang, Yifei Rong, Yong Yu, Jun Wang

From the learning perspective, we show that the bidding machine can be updated smoothly with both offline periodical batch or online sequential training schemes.

BIG-bench Machine Learning

Exponential Discriminative Metric Embedding in Deep Learning

no code implementations7 Mar 2018 Bowen Wu, Zhangling Chen, Jun Wang, Huaming Wu

With the remarkable success achieved by the Convolutional Neural Networks (CNNs) in object recognition recently, deep learning is being widely used in the computer vision community.

Face Recognition Face Verification +3

Inception Score, Label Smoothing, Gradient Vanishing and -log(D(x)) Alternative

no code implementations5 Aug 2017 Zhiming Zhou, Wei-Nan Zhang, Jun Wang

In this article, we mathematically study several GAN related topics, including Inception score, label smoothing, gradient vanishing and the -log(D(x)) alternative.

Exploiting Feature and Class Relationships in Video Categorization with Regularized Deep Neural Networks

no code implementations25 Feb 2015 Yu-Gang Jiang, Zuxuan Wu, Jun Wang, xiangyang xue, Shih-Fu Chang

In this paper, we study the challenging problem of categorizing videos according to high-level semantics such as the existence of a particular human action or a complex event.

tau-FPL: Tolerance-Constrained Learning in Linear Time

no code implementations15 Jan 2018 Ao Zhang, Nan Li, Jian Pu, Jun Wang, Junchi Yan, Hongyuan Zha

Learning a classifier with control on the false-positive rate plays a critical role in many machine learning applications.

Learning Continuous User Representations through Hybrid Filtering with doc2vec

no code implementations31 Dec 2017 Simon Stiebellehner, Jun Wang, Shuai Yuan

In order to maximize the predictive performance of our look-alike modeling algorithms, we propose two novel hybrid filtering techniques that utilize the recent neural probabilistic language model algorithm doc2vec.

Language Modelling

Happiness Pursuit: Personality Learning in a Society of Agents

no code implementations29 Nov 2017 Rafał Muszyński, Jun Wang

We find that the agents that achieve higher happiness during testing against hand-coded AI, have lower happiness when competing against each other.

A Neural Stochastic Volatility Model

no code implementations30 Nov 2017 Rui Luo, Wei-Nan Zhang, Xiaojun Xu, Jun Wang

In this paper, we show that the recent integration of statistical models with deep recurrent neural networks provides a new way of formulating volatility (the degree of variation of time series) models that have been widely used in time series analysis and prediction in finance.

Time Series Time Series Analysis

Set-to-Set Hashing with Applications in Visual Recognition

no code implementations2 Nov 2017 I-Hong Jhuo, Jun Wang

In this paper, we consider the fundamental problem of finding a nearest set from a collection of sets, to a query set.

Retrieval

Effective scaling registration approach by imposing the emphasis on the scale factor

no code implementations28 Apr 2017 Minmin Xu, Siyu Xu, Jihua Zhu, Yaochen Li, Jun Wang, Huimin Lu

This paper proposes an effective approach for the scaling registration of $m$-D point sets.

Learning text representation using recurrent convolutional neural network with highway layers

no code implementations22 Jun 2016 Ying Wen, Wei-Nan Zhang, Rui Luo, Jun Wang

Recently, the rapid development of word embedding and neural networks has brought new inspiration to various NLP and IR tasks.

Sentiment Analysis

A Survey on Soft Subspace Clustering

no code implementations19 Sep 2014 Zhaohong Deng, Kup-Sze Choi, Yizhang Jiang, Jun Wang, Shitong Wang

Subspace clustering (SC) is a promising clustering technology to identify clusters based on their associations with subspaces in high dimensional spaces.

Clustering

Feature Selection as a Multiagent Coordination Problem

no code implementations16 Mar 2016 Kleanthis Malialis, Jun Wang, Gary Brooks, George Frangou

In this paper, we formulate feature selection as a multiagent coordination problem and propose a novel feature selection method using multiagent reinforcement learning.

feature selection reinforcement-learning +1

Implicit Look-alike Modelling in Display Ads: Transfer Collaborative Filtering to CTR Estimation

no code implementations11 Jan 2016 Wei-Nan Zhang, Lingxi Chen, Jun Wang

In this work, we propose a general framework which learns the user profiles based on their online browsing behaviour, and transfers the learned knowledge onto prediction of their ad response.

Collaborative Filtering Transfer Learning

Factorizing LambdaMART for cold start recommendations

no code implementations4 Nov 2015 Phong Nguyen, Jun Wang, Alexandros Kalousis

Motivated by the fact that very often the users' and items' descriptions as well as the preference behavior can be well summarized by a small number of hidden factors, we propose a novel algorithm, LambdaMART Matrix Factorization (LambdaMART-MF), that learns a low rank latent representation of users and items using gradient boosted trees.

Learning-To-Rank Matrix Completion +1

Learning to Hash for Indexing Big Data - A Survey

no code implementations17 Sep 2015 Jun Wang, Wei Liu, Sanjiv Kumar, Shih-Fu Chang

Such learning to hash methods exploit information such as data distributions or class labels when optimizing the hash codes or functions.

Deep Attributes from Context-Aware Regional Neural Codes

no code implementations8 Sep 2015 Jianwei Luo, Jianguo Li, Jun Wang, Zhiguo Jiang, Yurong Chen

Results show that deep attribute approaches achieve state-of-the-art results, and outperforms existing peer methods with a significant margin, even though some benchmarks have little overlap of concepts with the pre-trained CNN models.

Attribute General Classification +2

Two-Stage Metric Learning

no code implementations12 May 2014 Jun Wang, Ke Sun, Fei Sha, Stephane Marchand-Maillet, Alexandros Kalousis

This induces in the input data space a new family of distance metric with unique properties.

Metric Learning Vocal Bursts Valence Prediction

Question Answering Against Very-Large Text Collections

no code implementations26 Apr 2013 Leon Derczynski, Richard Shaw, Ben Solway, Jun Wang

Question answering involves developing methods to extract useful information from large collections of documents.

Information Retrieval Question Answering +1

A dynamic pricing model for unifying programmatic guarantee and real-time bidding in display advertising

no code implementations20 May 2014 Bo-Wei Chen, Shuai Yuan, Jun Wang

From the experiments we find that, in a less competitive market, lower prices of the guaranteed contracts will encourage the purchase in advance and the revenue gain is mainly contributed by the increased competition in future RTB.

Computer Science and Game Theory

Learning Adaptive Display Exposure for Real-Time Advertising

no code implementations10 Sep 2018 Weixun Wang, Junqi Jin, Jianye Hao, Chunjie Chen, Chuan Yu, Wei-Nan Zhang, Jun Wang, Xiaotian Hao, Yixi Wang, Han Li, Jian Xu, Kun Gai

In this paper, we investigate the problem of advertising with adaptive exposure: can we dynamically determine the number and positions of ads for each user visit under certain business constraints so that the platform revenue can be increased?

Learning to Communicate Implicitly By Actions

no code implementations10 Oct 2018 Zheng Tian, Shihao Zou, Ian Davies, Tim Warr, Lisheng Wu, Haitham Bou Ammar, Jun Wang

The auxiliary reward for communication is integrated into the learning of the policy module.

Learning Shared Dynamics with Meta-World Models

no code implementations5 Nov 2018 Lisheng Wu, Minne Li, Jun Wang

Humans have consciousness as the ability to perceive events and objects: a mental model of the world developed from the most impoverished of visual stimuli, enabling humans to make rapid decisions and take actions.

Atari Games Multi-Task Learning

Layout Design for Intelligent Warehouse by Evolution with Fitness Approximation

no code implementations14 Nov 2018 Haifeng Zhang, Zilong Guo, Han Cai, Chris Wang, Wei-Nan Zhang, Yong Yu, Wenxin Li, Jun Wang

With the rapid growth of the express industry, intelligent warehouses that employ autonomous robots for carrying parcels have been widely used to handle the vast express volume.

Layout Design

Space-Time Local Embeddings

no code implementations NeurIPS 2015 Ke Sun, Jun Wang, Alexandros Kalousis, Stephane Marchand-Maillet

We give theoretical propositions to show that space-time is a more powerful representation than Euclidean space.

Dimensionality Reduction

Parametric Local Metric Learning for Nearest Neighbor Classification

no code implementations NeurIPS 2012 Jun Wang, Alexandros Kalousis, Adam Woznica

We present a new parametric local metric learning method in which we learn a smooth metric matrix function over the data manifold.

Classification General Classification +1

Transfer Representation Learning with TSK Fuzzy System

no code implementations9 Jan 2019 Peng Xu, Zhaohong Deng, Jun Wang, Qun Zhang, Shitong Wang

A core issue in transfer learning is to learn a shared feature space in where the distributions of the data from two domains are matched.

Dimensionality Reduction Representation Learning +1

Predicting the Mumble of Wireless Channel with Sequence-to-Sequence Models

no code implementations14 Jan 2019 Yourui Huangfu, Jian Wang, Rong Li, Chen Xu, Xianbin Wang, Huazi Zhang, Jun Wang

Accurate prediction of fading channel in future is essential to realize adaptive transmission and other methods that can save power and provide gains.

Caption Generation Language Modelling +5

Modelling Bounded Rationality in Multi-Agent Interactions by Generalized Recursive Reasoning

no code implementations26 Jan 2019 Ying Wen, Yaodong Yang, Rui Luo, Jun Wang

Though limited in real-world decision making, most multi-agent reinforcement learning (MARL) models assume perfectly rational agents -- a property hardly met due to individual's cognitive limitation and/or the tractability of the decision problem.

Decision Making Multi-agent Reinforcement Learning

Probabilistic Recursive Reasoning for Multi-Agent Reinforcement Learning

no code implementations ICLR 2019 Ying Wen, Yaodong Yang, Rui Luo, Jun Wang, Wei Pan

Our methods are tested on both the matrix game and the differential game, which have a non-trivial equilibrium where common gradient-based methods fail to converge.

Multi-agent Reinforcement Learning reinforcement-learning +1

Online Reconstruction of Indoor Scenes From RGB-D Streams

no code implementations CVPR 2016 Hao Wang, Jun Wang, Wang Liang

A system capable of performing robust online volumetric reconstruction of indoor scenes based on input from a handheld RGB-D camera is presented.

End-to-end feature fusion siamese network for adaptive visual tracking

no code implementations4 Feb 2019 Dongyan Guo, Jun Wang, Weixuan Zhao, Ying Cui, Zhenhua Wang, Sheng-Yong Chen

Both features and the channel weights are utilized in a template generation layer to generate a discriminative template.

Visual Tracking

Factorized Q-Learning for Large-Scale Multi-Agent Systems

no code implementations11 Sep 2018 Yong Chen, Ming Zhou, Ying Wen, Yaodong Yang, Yufeng Su, Wei-Nan Zhang, Dell Zhang, Jun Wang, Han Liu

Deep Q-learning has achieved a significant success in single-agent decision making tasks.

Multiagent Systems

Learning to Flip Successive Cancellation Decoding of Polar Codes with LSTM Networks

no code implementations22 Feb 2019 Xianbin Wang, Huazi Zhang, Rong Li, Lingchen Huang, Shengchen Dai, Yourui Huangfu, Jun Wang

Specifically, before each SC decoding attempt, a long short-term memory (LSTM) network is exploited to either (i) locate the first error bit, or (ii) undo a previous `wrong' flip.

Joint Perception and Control as Inference with an Object-based Implementation

no code implementations4 Mar 2019 Minne Li, Zheng Tian, Pranav Nashikkar, Ian Davies, Ying Wen, Jun Wang

Existing model-based reinforcement learning methods often study perception modeling and decision making separately.

Bayesian Inference Decision Making +2

Reinforcement Learning for Nested Polar Code Construction

no code implementations16 Apr 2019 Lingchen Huang, Huazi Zhang, Rong Li, Yiqun Ge, Jun Wang

In this paper, we model nested polar code construction as a Markov decision process (MDP), and tackle it with advanced reinforcement learning (RL) techniques.

reinforcement-learning Reinforcement Learning (RL)

Concise Fuzzy System Modeling Integrating Soft Subspace Clustering and Sparse Learning

no code implementations24 Apr 2019 Peng Xu, Zhaohong Deng, Chen Cui, Te Zhang, Kup-Sze Choi, Gu Suhang, Jun Wang, Shitong Wang

Furthermore, for highly nonlinear modeling task, it is usually necessary to use a large number of rules which further weakens the clarity and interpretability of TSK FS.

Clustering Sparse Learning

Multiple Independent Subspace Clusterings

no code implementations10 May 2019 Xing Wang, Jun Wang, Carlotta Domeniconi, Guoxian Yu, Guo-Qiang Xiao, Maozu Guo

To ease this process, we consider diverse clusterings embedded in different subspaces, and analyze the embedding subspaces to shed light into the structure of each clustering.

Clustering

Multi-View Multi-Instance Multi-Label Learning based on Collaborative Matrix Factorization

no code implementations13 May 2019 Yuying Xing, Guoxian Yu, Carlotta Domeniconi, Jun Wang, Zili Zhang, Maozu Guo

To preserve the intrinsic structure of the data matrices, M3Lcmf collaboratively factorizes them into low-rank matrices, explores the latent relationships between bags, instances, and labels, and selectively merges the data matrices.

Multi-Label Learning

Multi-View Multiple Clustering

no code implementations13 May 2019 Shixing Yao, Guoxian Yu, Jun Wang, Carlotta Domeniconi, Xiangliang Zhang

It then uses matrix factorization on the individual matrices, along with the shared matrix, to generate diverse clusterings of high-quality.

Clustering Representation Learning

BayesNAS: A Bayesian Approach for Neural Architecture Search

no code implementations13 May 2019 Hongpeng Zhou, Minghao Yang, Jun Wang, Wei Pan

One-Shot Neural Architecture Search (NAS) is a promising method to significantly reduce search time without any separate training.

Neural Architecture Search

Ranking-based Deep Cross-modal Hashing

no code implementations11 May 2019 Xuanwu Liu, Guoxian Yu, Carlotta Domeniconi, Jun Wang, Yazhou Ren, Maozu Guo

Next, to expand the semantic representation power of hand-crafted features, RDCMH integrates the semantic ranking information into deep cross-modal hashing and jointly optimizes the compatible parameters of deep feature representations and of hashing functions.

Cross-Modal Retrieval Retrieval

ActiveHNE: Active Heterogeneous Network Embedding

no code implementations14 May 2019 Xia Chen, Guoxian Yu, Jun Wang, Carlotta Domeniconi, Zhao Li, Xiangliang Zhang

To maximize the profit of utilizing the rare and valuable supervised information in HNEs, we develop a novel Active Heterogeneous Network Embedding (ActiveHNE) framework, which includes two components: Discriminative Heterogeneous Network Embedding (DHNE) and Active Query in Heterogeneous Networks (AQHN).

Network Embedding

Deep Reinforcement Learning for Scheduling in Cellular Networks

no code implementations15 May 2019 Jian Wang, Chen Xu, Yourui Huangfu, Rong Li, Yiqun Ge, Jun Wang

Integrating artificial intelligence (AI) into wireless networks has drawn significant interest in both industry and academia.

reinforcement-learning Reinforcement Learning (RL) +1

Learning discriminative features in sequence training without requiring framewise labelled data

no code implementations16 May 2019 Jun Wang, Dan Su, Jie Chen, Shulin Feng, Dongpeng Ma, Na Li, Dong Yu

We propose a novel method which simultaneously models both the sequence discriminative training and the feature discriminative learning within a single network architecture, so that it can learn discriminative deep features in sequence training that obviates the need for presegmented training data.

Joint Information Preservation for Heterogeneous Domain Adaptation

no code implementations22 May 2019 Peng Xu, Zhaohong Deng, Kup-Sze Choi, Jun Wang, Shitong Wang

The two domains often lie in different feature spaces due to diverse data collection methods, which leads to the more challenging task of heterogeneous domain adaptation (HDA).

Domain Adaptation

Replica-exchange Nosé-Hoover dynamics for Bayesian learning on large datasets

no code implementations29 May 2019 Rui Luo, Qiang Zhang, Yaodong Yang, Jun Wang

In this paper, we present a new practical method for Bayesian learning that can rapidly draw representative samples from complex posterior distributions with multiple isolated modes in the presence of mini-batch noise.

General Classification Image Classification

Weakly-paired Cross-Modal Hashing

no code implementations29 May 2019 Xuanwu Liu, Jun Wang, Guoxian Yu, Carlotta Domeniconi, Xiangliang Zhang

FlexCMH first introduces a clustering-based matching strategy to explore the local structure of each cluster, and thus to find the potential correspondence between clusters (and samples therein) across modalities.

Clustering Retrieval

CoRide: Joint Order Dispatching and Fleet Management for Multi-Scale Ride-Hailing Platforms

no code implementations27 May 2019 Jiarui Jin, Ming Zhou, Wei-Nan Zhang, Minne Li, Zilong Guo, Zhiwei Qin, Yan Jiao, Xiaocheng Tang, Chenxi Wang, Jun Wang, Guobin Wu, Jieping Ye

How to optimally dispatch orders to vehicles and how to trade off between immediate and future returns are fundamental questions for a typical ride-hailing platform.

Multiagent Systems

Graph Attention Memory for Visual Navigation

no code implementations11 May 2019 Dong Li, Qichao Zhang, Dongbin Zhao, Yuzheng Zhuang, Bin Wang, Wulong Liu, Rasul Tutunov, Jun Wang

To address the long-term memory issue, this paper proposes a graph attention memory (GAM) architecture consisting of memory construction module, graph attention module and control module.

Graph Attention Reinforcement Learning (RL) +1

Speech-based Estimation of Bulbar Regression in Amyotrophic Lateral Sclerosis

no code implementations WS 2019 Alan Wisler, Kristin Teplansky, Jordan Green, Yana Yunusova, Thomas Campbell, Daragh Heitzman, Jun Wang

Experimental results demonstrated the AFSFRS-R bulbar subscore can be predicted from speech samples, which has clinical implication for automatic monitoring of the disease progression of ALS using speech information.

regression

Realistic Channel Models Pre-training

no code implementations22 Jul 2019 Yourui Huangfu, Jian Wang, Chen Xu, Rong Li, Yiqun Ge, Xianbin Wang, Huazi Zhang, Jun Wang

In this paper, we propose a neural-network-based realistic channel model with both the similar accuracy as deterministic channel models and uniformity as stochastic channel models.

Wasserstein Robust Reinforcement Learning

no code implementations30 Jul 2019 Mohammed Amin Abdullah, Hang Ren, Haitham Bou Ammar, Vladimir Milenkovic, Rui Luo, Mingtian Zhang, Jun Wang

Reinforcement learning algorithms, though successful, tend to over-fit to training environments hampering their application to the real-world.

reinforcement-learning Reinforcement Learning (RL)

Cross-modal Zero-shot Hashing

no code implementations19 Aug 2019 Xuanwu Liu, Zhao Li, Jun Wang, Guoxian Yu, Carlotta Domeniconi, Xiangliang Zhang

It then defines an objective function to achieve deep feature learning compatible with the composite similarity preserving, category attribute space learning, and hashing coding function learning.

Attribute Retrieval

MANAS: Multi-Agent Neural Architecture Search

no code implementations3 Sep 2019 Vasco Lopes, Fabio Maria Carlucci, Pedro M Esperança, Marco Singh, Victor Gabillon, Antoine Yang, Hang Xu, Zewei Chen, Jun Wang

The Neural Architecture Search (NAS) problem is typically formulated as a graph search problem where the goal is to learn the optimal operations over edges in order to maximise a graph-level global objective.

Neural Architecture Search

MarlRank: Multi-agent Reinforced Learning to Rank

no code implementations15 Sep 2019 Shihao Zou, Zhonghua Li, Mohammad Akbari, Jun Wang, Peng Zhang

By defining reward as a function of NDCG, we can optimize our model directly on the ranking performance measure.

Document Ranking Learning-To-Rank

GREASE: A Generative Model for Relevance Search over Knowledge Graphs

no code implementations11 Oct 2019 Tianshuo Zhou, Ziyang Li, Gong Cheng, Jun Wang, Yu'Ang Wei

The model applies to meta-path based relevance where a meta-path characterizes a particular type of semantics of relating the query entity to answer entities.

Knowledge Graphs

Mixup-breakdown: a consistency training method for improving generalization of speech separation models

no code implementations28 Oct 2019 Max W. Y. Lam, Jun Wang, Dan Su, Dong Yu

Deep-learning based speech separation models confront poor generalization problem that even the state-of-the-art models could abruptly fail when evaluating them in mismatch conditions.

Speech Separation

Detecting Causal Language Use in Science Findings

no code implementations IJCNLP 2019 Bei Yu, Yingya Li, Jun Wang

We then applied the prediction model to measure the causal language use in the research conclusions of about 38, 000 observational studies in PubMed.

Misinformation

Active Multi-Label Crowd Consensus

no code implementations7 Nov 2019 Jinzheng Tu, Guoxian Yu, Carlotta Domeniconi, Jun Wang, Xiangliang Zhang

AMCC accounts for the commonality and individuality of workers, and assumes that workers can be organized into different groups.

Buffer-aware Wireless Scheduling based on Deep Reinforcement Learning

no code implementations13 Nov 2019 Chen Xu, Jian Wang, Tianhang Yu, Chuili Kong, Yourui Huangfu, Rong Li, Yiqun Ge, Jun Wang

In this paper, the downlink packet scheduling problem for cellular networks is modeled, which jointly optimizes throughput, fairness and packet drop rate.

Fairness reinforcement-learning +2

Multi-View Multiple Clusterings using Deep Matrix Factorization

no code implementations26 Nov 2019 Shaowei Wei, Jun Wang, Guoxian Yu, Carlotta, Xiangliang Zhang

Multi-view clustering aims at integrating complementary information from multiple heterogeneous views to improve clustering results.

Clustering

Neighborhood Cognition Consistent Multi-Agent Reinforcement Learning

no code implementations3 Dec 2019 Hangyu Mao, Wulong Liu, Jianye Hao, Jun Luo, Dong Li, Zhengchao Zhang, Jun Wang, Zhen Xiao

Social psychology and real experiences show that cognitive consistency plays an important role to keep human society in order: if people have a more consistent cognition about their environments, they are more likely to achieve better cooperation.

Multi-agent Reinforcement Learning Q-Learning +2

Attention-Aware Answers of the Crowd

no code implementations24 Dec 2019 Jingzheng Tu, Guoxian Yu, Jun Wang, Carlotta Domeniconi, Xiangliang Zhang

However, they all assume that workers' label quality is stable over time (always at the same level whenever they conduct the tasks).

Bayesian Inference

Crowdfunding Dynamics Tracking: A Reinforcement Learning Approach

no code implementations27 Dec 2019 Jun Wang, Hefu Zhang, Qi Liu, Zhen Pan, Hanqing Tao

However, few of them take into account the inherent decision-making process between investors and crowdfunding dynamics.

Continuous Control Decision Making +4

Compositional ADAM: An Adaptive Compositional Solver

no code implementations10 Feb 2020 Rasul Tutunov, Minne Li, Alexander I. Cowen-Rivers, Jun Wang, Haitham Bou-Ammar

In this paper, we present C-ADAM, the first adaptive solver for compositional problems involving a non-linear functional nesting of expected values.

Meta-Learning

Partial Multi-label Learning with Label and Feature Collaboration

no code implementations17 Mar 2020 Tingting Yu, Guoxian Yu, Jun Wang, Maozu Guo

Partial multi-label learning (PML) models the scenario where each training instance is annotated with a set of candidate labels, and only some of the labels are relevant.

Multi-Label Learning

Curved Buildings Reconstruction from Airborne LiDAR Data by Matching and Deforming Geometric Primitives

no code implementations22 Mar 2020 Jingwei Song, Shaobo Xia, Jun Wang, Dong Chen

To this end, we propose a new framework for curved building reconstruction via assembling and deforming geometric primitives.

ControlVAE: Controllable Variational Autoencoder

no code implementations ICML 2020 Huajie Shao, Shuochao Yao, Dachun Sun, Aston Zhang, Shengzhong Liu, Dongxin Liu, Jun Wang, Tarek Abdelzaher

Variational Autoencoders (VAE) and their variants have been widely used in a variety of applications, such as dialog generation, image generation and disentangled representation learning.

Image Generation Language Modelling +1

Uncertainty Quantification for Hyperspectral Image Denoising Frameworks based on Low-rank Matrix Approximation

1 code implementation23 Apr 2020 Jingwei Song, Shaobo Xia, Jun Wang, Mitesh Patel, Dong Chen

Sliding-window based low-rank matrix approximation (LRMA) is a technique widely used in hyperspectral images (HSIs) denoising or completion.

Hyperspectral Image Denoising Image Denoising +1

Deep Feature-preserving Normal Estimation for Point Cloud Filtering

no code implementations24 Apr 2020 Dening Lu, Xuequan Lu, Yangxing Sun, Jun Wang

In this paper, we propose a novel feature-preserving normal estimation method for point cloud filtering with preserving geometric features.

Position

Actor-Critic Reinforcement Learning for Control with Stability Guarantee

no code implementations29 Apr 2020 Minghao Han, Lixian Zhang, Jun Wang, Wei Pan

Reinforcement Learning (RL) and its integration with deep learning have achieved impressive performance in various robotic control tasks, ranging from motion planning and navigation to end-to-end visual manipulation.

Motion Planning reinforcement-learning +1

Learning from a Lightweight Teacher for Efficient Knowledge Distillation

no code implementations19 May 2020 Yuang Liu, Wei zhang, Jun Wang

Knowledge Distillation (KD) is an effective framework for compressing deep learning models, realized by a student-teacher paradigm requiring small student networks to mimic the soft target generated by well-trained teachers.

Knowledge Distillation

A Framework for Behavioral Biometric Authentication using Deep Metric Learning on Mobile Devices

no code implementations26 May 2020 Cong Wang, Yanru Xiao, Xing Gao, Li Li, Jun Wang

We show the feasibility of training with mobile CPUs, where training 100 epochs takes less than 10 mins and can be boosted 3-5 times with feature transfer.

Metric Learning Multi-class Classification

Bidirectional Loss Function for Label Enhancement and Distribution Learning

no code implementations7 Jul 2020 Xinyuan Liu, Jihua Zhu, Qinghai Zheng, Zhongyu Li, Ruixin Liu, Jun Wang

More specifically, this novel loss function not only considers the mapping errors generated from the projection of the input space into the output one but also accounts for the reconstruction errors generated from the projection of the output space back to the input one.

Multi-Label Learning

InfoFocus: 3D Object Detection for Autonomous Driving with Dynamic Information Modeling

no code implementations ECCV 2020 Jun Wang, Shiyi Lan, Mingfei Gao, Larry S. Davis

Results show that our framework achieves the state-of-the-art performance with 31 FPS and improves our baseline significantly by 9. 0% mAP on the nuScenes test set.

3D Object Detection Autonomous Driving +2

NPCFace: Negative-Positive Collaborative Training for Large-scale Face Recognition

no code implementations20 Jul 2020 Dan Zeng, Hailin Shi, Hang Du, Jun Wang, Zhen Lei, Tao Mei

However, the correlation between hard positive and hard negative is overlooked, and so is the relation between the margins in positive and negative logits.

Face Recognition

Bilevel Learning Model Towards Industrial Scheduling

no code implementations10 Aug 2020 Longkang Li, Hui-Ling Zhen, Mingxuan Yuan, Jiawen Lu, XialiangTong, Jia Zeng, Jun Wang, Dirk Schnieders

In this paper, we propose a Bilevel Deep reinforcement learning Scheduler, \textit{BDS}, in which the higher level is responsible for exploring an initial global sequence, whereas the lower level is aiming at exploitation for partial sequence refinements, and the two levels are connected by a sliding-window sampling mechanism.

Scheduling

Adaptive Structural Fingerprints for Graph Attention Networks

no code implementations ICLR 2020 Kai Zhang, Yaokang Zhu, Jun Wang, Jie Zhang

Yet, how to fully exploit rich structural information in the attention mechanism remains a challenge.

Graph Attention

Learning to Infer User Hidden States for Online Sequential Advertising

no code implementations3 Sep 2020 Zhaoqing Peng, Junqi Jin, Lan Luo, Yaodong Yang, Rui Luo, Jun Wang, Wei-Nan Zhang, Haiyang Xu, Miao Xu, Chuan Yu, Tiejian Luo, Han Li, Jian Xu, Kun Gai

To drive purchase in online advertising, it is of the advertiser's great interest to optimize the sequential advertising strategy whose performance and interpretability are both important.

3DPVNet: Patch-level 3D Hough Voting Network for 6D Pose Estimation

no code implementations15 Sep 2020 Yuanpeng Liu, Jun Zhou, Yuqi Zhang, Chao Ding, Jun Wang

To address the problem, a novel 3DPVNet is presented in this work, which utilizes 3D local patches to vote for the object 6D poses.

6D Pose Estimation

Reinforcement Learning for Control with Probabilistic Stability Guarantee

no code implementations1 Jan 2021 Minghao Han, Zhipeng Zhou, Lixian Zhang, Jun Wang, Wei Pan

Reinforcement learning is promising to control dynamical systems for which the traditional control methods are hardly applicable.

reinforcement-learning Reinforcement Learning (RL)

Regioned Episodic Reinforcement Learning

no code implementations1 Jan 2021 Jiarui Jin, Cong Chen, Ming Zhou, Weinan Zhang, Rasool Fakoor, David Wipf, Yong Yu, Jun Wang, Alex Smola

Goal-oriented reinforcement learning algorithms are often good at exploration, not exploitation, while episodic algorithms excel at exploitation, not exploration.

reinforcement-learning Reinforcement Learning (RL)

Robust Multi-Agent Reinforcement Learning Driven by Correlated Equilibrium

no code implementations1 Jan 2021 Yizheng Hu, Kun Shao, Dong Li, Jianye Hao, Wulong Liu, Yaodong Yang, Jun Wang, Zhanxing Zhu

Therefore, to achieve robust CMARL, we introduce novel strategies to encourage agents to learn correlated equilibrium while maximally preserving the convenience of the decentralized execution.

Adversarial Robustness reinforcement-learning +2

TextTN: Probabilistic Encoding of Language on Tensor Network

no code implementations1 Jan 2021 Peng Zhang, Jing Zhang, Xindian Ma, Siwei Rao, Guangjian Tian, Jun Wang

As a novel model that bridges machine learning and quantum theory, tensor network (TN) has recently gained increasing attention and successful applications for processing natural images.

General Classification Sentence +4

Learning to Explore with Pleasure

no code implementations1 Jan 2021 Yean Hoon Ong, Jun Wang

Exploration is a long-standing challenge in sequential decision problem in machine learning.

Bayesian Optimisation BIG-bench Machine Learning +1

Learning Predictive Communication by Imagination in Networked System Control

no code implementations1 Jan 2021 Yali Du, Yifan Zhao, Meng Fang, Jun Wang, Gangyan Xu, Haifeng Zhang

Dealing with multi-agent control in networked systems is one of the biggest challenges in Reinforcement Learning (RL) and limited success has been presented compared to recent deep reinforcement learning in single-agent domain.

reinforcement-learning Reinforcement Learning (RL)

Deep Incomplete Multi-View Multiple Clusterings

no code implementations2 Oct 2020 Shaowei Wei, Jun Wang, Guoxian Yu, Carlotta Domeniconi, Xiangliang Zhang

Multi-view clustering aims at exploiting information from multiple heterogeneous views to promote clustering.

Clustering

Multi-typed Objects Multi-view Multi-instance Multi-label Learning

no code implementations6 Oct 2020 Yuanlin Yang, Guoxian Yu, Jun Wang, Carlotta Domeniconi, Xiangliang Zhang

Multi-typed objects Multi-view Multi-instance Multi-label Learning (M4L) deals with interconnected multi-typed objects (or bags) that are made of diverse instances, represented with heterogeneous feature views and annotated with a set of non-exclusive but semantically related labels.

Multi-Label Learning

Style Attuned Pre-training and Parameter Efficient Fine-tuning for Spoken Language Understanding

no code implementations9 Oct 2020 Jin Cao, Jun Wang, Wael Hamza, Kelly Vanee, Shang-Wen Li

The light encoder architecture separates the shared pre-trained networks from the mappings of generally encoded knowledge to specific domains of SLU, allowing for the domain adaptation to be performed solely at the light encoder and thus increasing efficiency.

Domain Adaptation Language Modelling +1

Boosted EfficientNet: Detection of Lymph Node Metastases in Breast Cancer Using Convolutional Neural Network

no code implementations10 Oct 2020 Jun Wang, Qianying Liu, Haotian Xie, Zhaogang Yang, Hefeng Zhou

In this paper, the Convolutional Neutral Network (CNN) has been adapted to predict and classify lymph node metastasis in breast cancer.

Data Augmentation Image Cropping +1

Gröbner-Shirshov bases for the Coxeter groups of the types $G_2,F_4,E_6,E_7$ and $E_8$

no code implementations18 Feb 2020 Jun Wang

The author is mainly interest in the Gr\"{o}bner-Shirshov bases of finite Coxeter groups.

Group Theory Rings and Algebras 16S15, 20F55

Liouville type theorems and periodic solutions for the nonhomogeneous parabolic systems

no code implementations30 Aug 2020 Aleks Jevnikar, Jun Wang, Wen Yang

In the present paper we derive Liouville type results and existence of periodic solutions for $\chi^{(2)}$ type systems with non-homogeneous nonlinearities.

Analysis of PDEs 35K9, 35J61, 35B45

A Targeted Attack on Black-Box Neural Machine Translation with Parallel Data Poisoning

no code implementations2 Nov 2020 Chang Xu, Jun Wang, Yuqing Tang, Francisco Guzman, Benjamin I. P. Rubinstein, Trevor Cohn

In this paper, we show that targeted attacks on black-box NMT systems are feasible, based on poisoning a small fraction of their parallel training data.

Data Poisoning Machine Translation +2

U-rank: Utility-oriented Learning to Rank with Implicit Feedback

no code implementations1 Nov 2020 Xinyi Dai, Jiawei Hou, Qing Liu, Yunjia Xi, Ruiming Tang, Weinan Zhang, Xiuqiang He, Jun Wang, Yong Yu

To this end, we propose a novel ranking framework called U-rank that directly optimizes the expected utility of the ranking list.

Click-Through Rate Prediction Learning-To-Rank +2

Replica-Exchange Nos\'e-Hoover Dynamics for Bayesian Learning on Large Datasets

no code implementations NeurIPS 2020 Rui Luo, Qiang Zhang, Yaodong Yang, Jun Wang

In this paper, we present a new practical method for Bayesian learning that can rapidly draw representative samples from complex posterior distributions with multiple isolated modes in the presence of mini-batch noise.

Automated Prostate Cancer Diagnosis Based on Gleason Grading Using Convolutional Neural Network

no code implementations29 Nov 2020 Haotian Xie, Yong Zhang, Jun Wang, Jingjing Zhang, Yifan Ma, Zhaogang Yang

The Gleason grading system using histological images is the most powerful diagnostic and prognostic predictor of prostate cancer.

Data Augmentation Image Reconstruction

Spectrum Cartography via Coupled Block-Term Tensor Decomposition

no code implementations28 Nov 2019 Guoyong Zhang, Xiao Fu, Jun Wang, Xi-Le Zhao, Mingyi Hong

Spectrum cartography aims at estimating power propagation patterns over a geographical region across multiple frequency bands (i. e., a radio map)---from limited samples taken sparsely over the region.

Spectrum Cartography Tensor Decomposition

Hyperspectral Super-Resolution via Interpretable Block-Term Tensor Modeling

no code implementations18 Jun 2020 Meng Ding, Xiao Fu, Ting-Zhu Huang, Jun Wang, Xi-Le Zhao

This work employs an idea that models spectral images as tensors following the block-term decomposition model with multilinear rank-$(L_r, L_r, 1)$ terms (i. e., the LL1 model) and formulates the HSR problem as a coupled LL1 tensor decomposition problem.

Super-Resolution Tensor Decomposition

Time irreversibility and amplitude irreversibility measures for nonequilibrium processes

no code implementations19 Aug 2020 Wenpo Yao, Jun Wang, Matjaz Perc, Wenli Yao, Jiafei Dai, Daqing Guo, Dezhong Yao

Time irreversibility should be measured based on the permutations of symmetric vectors rather than symmetric permutations, whereas symmetric permutations can instead be employed to determine the quantitative amplitude irreversibility -- a novel parameter proposed in this paper for nonequilibrium calculated by means of the probabilistic difference in amplitude fluctuations.

Semi-supervised Active Learning for Instance Segmentation via Scoring Predictions

no code implementations9 Dec 2020 Jun Wang, Shaoguo Wen, Kaixing Chen, Jianghua Yu, Xin Zhou, Peng Gao, Changsheng Li, Guotong Xie

Active learning generally involves querying the most representative samples for human labeling, which has been widely studied in many fields such as image classification and object detection.

Active Learning Image Classification +5

Learn molecular representations from large-scale unlabeled molecules for drug discovery

no code implementations21 Dec 2020 Pengyong Li, Jun Wang, Yixuan Qiao, Hao Chen, Yihuan Yu, Xiaojun Yao, Peng Gao, Guotong Xie, Sen Song

Here, we proposed a novel Molecular Pre-training Graph-based deep learning framework, named MPG, that leans molecular representations from large-scale unlabeled molecules.

Drug Discovery

Generalized Relation Learning with Semantic Correlation Awareness for Link Prediction

no code implementations22 Dec 2020 Yao Zhang, Xu Zhang, Jun Wang, Hongru Liang, Wenqiang Lei, Zhe Sun, Adam Jatowt, Zhenglu Yang

The current methods for the link prediction taskhavetwonaturalproblems:1)the relation distributions in KGs are usually unbalanced, and 2) there are many unseen relations that occur in practical situations.

Knowledge Graphs Link Prediction +1

Causal World Models by Unsupervised Deconfounding of Physical Dynamics

no code implementations28 Dec 2020 Minne Li, Mengyue Yang, Furui Liu, Xu Chen, Zhitang Chen, Jun Wang

The capability of imagining internally with a mental model of the world is vitally important for human cognition.

counterfactual

Task-driven Self-supervised Bi-channel Networks for Diagnosis of Breast Cancers with Mammography

no code implementations15 Jan 2021 Ronglin Gong, Jun Wang, Jun Shi

In this work, a Task-driven Self-supervised Bi-channel Networks (TSBN) framework is proposed to improve the performance of classification model the mammography-based CAD.

General Classification Image Restoration +2

Efficient Semi-Implicit Variational Inference

no code implementations15 Jan 2021 Vincent Moens, Hang Ren, Alexandre Maraval, Rasul Tutunov, Jun Wang, Haitham Ammar

In this paper, we propose CI-VI an efficient and scalable solver for semi-implicit variational inference (SIVI).

Variational Inference

A relic sketch extraction framework based on detail-aware hierarchical deep network

no code implementations17 Jan 2021 Jinye Peng, Jiaxin Wang, Jun Wang, Erlei Zhang, Qunxi Zhang, Yongqin Zhang, Xianlin Peng, Kai Yu

For the fine extraction stage, we design a new multiscale U-Net (MSU-Net) to effectively remove disease noise and refine the sketch.

Edge Detection Transfer Learning

Controllable and Diverse Text Generation in E-commerce

no code implementations23 Feb 2021 Huajie Shao, Jun Wang, Haohong Lin, Xuezhou Zhang, Aston Zhang, Heng Ji, Tarek Abdelzaher

The algorithm is injected into a Conditional Variational Autoencoder (CVAE), allowing \textit{Apex} to control both (i) the order of keywords in the generated sentences (conditioned on the input keywords and their order), and (ii) the trade-off between diversity and accuracy.

Text Generation

Contrastive Separative Coding for Self-supervised Representation Learning

no code implementations1 Mar 2021 Jun Wang, Max W. Y. Lam, Dan Su, Dong Yu

To extract robust deep representations from long sequential modeling of speech data, we propose a self-supervised learning approach, namely Contrastive Separative Coding (CSC).

Representation Learning Self-Supervised Learning +1

Tune-In: Training Under Negative Environments with Interference for Attention Networks Simulating Cocktail Party Effect

no code implementations2 Mar 2021 Jun Wang, Max W. Y. Lam, Dan Su, Dong Yu

We study the cocktail party problem and propose a novel attention network called Tune-In, abbreviated for training under negative environments with interference.

Speaker Verification Speech Separation

Smart Scheduling based on Deep Reinforcement Learning for Cellular Networks

no code implementations22 Mar 2021 Jian Wang, Chen Xu, Rong Li, Yiqun Ge, Jun Wang

We not only verify the performance gain achieved, but also provide implementation-friend designs, i. e., a scalable neural network design for the agent and a virtual environment training framework.

Fairness Management +3

A General Framework for Learning Prosodic-Enhanced Representation of Rap Lyrics

no code implementations23 Mar 2021 Hongru Liang, Haozheng Wang, Qian Li, Jun Wang, Guandong Xu, Jiawei Chen, Jin-Mao Wei, Zhenglu Yang

Learning and analyzing rap lyrics is a significant basis for many web applications, such as music recommendation, automatic music categorization, and music information retrieval, due to the abundant source of digital music in the World Wide Web.

Information Retrieval Music Information Retrieval +3

Learning Polar Encodings for Arbitrary-Oriented Ship Detection in SAR Images

no code implementations24 Mar 2021 Yishan He, Fei Gao, Jun Wang, Amir Hussain, Erfu Yang, Huiyu Zhou

In this paper, in order to solve the boundary discontinuity problem in OBB regression, we propose to detect SAR ships by learning polar encodings.

regression SAR Ship Detection

Zero-shot Adversarial Quantization

no code implementations CVPR 2021 Yuang Liu, Wei zhang, Jun Wang

To address the above issues, we propose a zero-shot adversarial quantization (ZAQ) framework, facilitating effective discrepancy estimation and knowledge transfer from a full-precision model to its quantized model.

Ranked #2 on Data Free Quantization on CIFAR-100 (CIFAR-100 W5A5 Top-1 Accuracy metric)

Data Free Quantization Transfer Learning

Source-Free Domain Adaptation for Semantic Segmentation

no code implementations CVPR 2021 Yuang Liu, Wei zhang, Jun Wang

To cope with this issue, we propose a source-free domain adaptation framework for semantic segmentation, namely SFDA, in which only a well-trained source model and an unlabeled target domain dataset are available for adaptation.

Segmentation Self-Supervised Learning +4

Two-phase weakly supervised object detection with pseudo ground truth mining

no code implementations1 Apr 2021 Jun Wang

We explore the effectiveness of some representative detectors utilized as the second-phase detector in two-phase WSOD and propose a two-phase WSOD architecture.

object-detection Vocal Bursts Valence Prediction +1

A Lossless Intra Reference Block Recompression Scheme for Bandwidth Reduction in HEVC-IBC

no code implementations5 Apr 2021 Jiyuan Hu, Jun Wang, Guangyu Zhong, Jian Cao, Ren Mao, Fan Liang

The reference frame memory accesses in inter prediction result in high DRAM bandwidth requirement and power consumption.

Texture Classification

A 3D Non-Stationary Channel Model for 6G Wireless Systems Employing Intelligent Reflecting Surface

no code implementations3 Dec 2020 Yingzhuo Sun, Cheng-Xiang Wang, Jie Huang, Jun Wang

The evolution of clusters on the linear array and planar array is also considered in the proposed model.

Deep Modulation Recognition with Multiple Receive Antennas: An End-to-end Feature Learning Approach

no code implementations15 Aug 2020 Lei LI, Qihang Peng, Jun Wang

The first is based on multi-view convolutional neural network by treating signals from different receive antennas as different views of a 3D object and designing the location and operation of view-pooling layer that are suitable for feature fusion of multi-antenna signals.

A General 3D Space-Time-Frequency Non-Stationary THz Channel Model for 6G Ultra-Massive MIMO Wireless Communication Systems

no code implementations20 Apr 2021 Jun Wang, Cheng-Xiang Wang, Jie Huang, Haiming Wang, Xiqi Gao

The proposed THz channel model is very general having the capability to capture different channel characteristics in multiple THz application scenarios such as indoor scenarios, device-to-device (D2D) communications, ultra-massive multiple-input multiple-output (MIMO) communications, and long traveling paths of users.

A 3D Non-Stationary Channel Model for 6G Wireless Systems Employing Intelligent Reflecting Surfaces with Practical Phase Shifts

no code implementations25 Apr 2021 Yingzhuo Sun, Cheng-Xiang Wang, Jie Huang, Jun Wang

In this paper, a three-dimensional (3D) geometry based stochastic model (GBSM) for a massive multiple-input multiple-output (MIMO) communication system employing practical discrete intelligent reflecting surface (IRS) is proposed.

AGMB-Transformer: Anatomy-Guided Multi-Branch Transformer Network for Automated Evaluation of Root Canal Therapy

1 code implementation2 May 2021 Yunxiang Li, Guodong Zeng, Yifan Zhang, Jun Wang, Qianni Zhang, Qun Jin, Lingling Sun, Qisi Lian, Neng Xia, Ruizi Peng, Kai Tang, Yaqi Wang, Shuai Wang

Accurate evaluation of the treatment result on X-ray images is a significant and challenging step in root canal therapy since the incorrect interpretation of the therapy results will hamper timely follow-up which is crucial to the patients' treatment outcome.

Anatomy General Classification

Self-Adaptive Transfer Learning for Multicenter Glaucoma Classification in Fundus Retina Images

no code implementations7 May 2021 Yiming Bao, Jun Wang, Tong Li, Linyan Wang, Jianwei Xu, Juan Ye, Dahong Qian

Specifically, the encoder of a DL model that is pre-trained on the source domain is used to initialize the encoder of a reconstruction model.

Domain Adaptation Transfer Learning

Integrated Communication and Navigation for Ultra-Dense LEO Satellite Networks: Vision, Challenges and Solutions

no code implementations19 May 2021 Yu Wang, Hejia Luo, Ying Chen, Jun Wang, Rong Li, Bin Wang

Next generation beyond 5G networks are expected to provide both Terabits per second data rate communication services and centimeter-level accuracy localization services in an efficient, seamless and cost-effective manner.

Learning to Optimize Industry-Scale Dynamic Pickup and Delivery Problems

no code implementations27 May 2021 Xijun Li, Weilin Luo, Mingxuan Yuan, Jun Wang, Jiawen Lu, Jie Wang, Jinhu Lu, Jia Zeng

Our method is entirely data driven and thus adaptive, i. e., the relational representation of adjacent vehicles can be learned and corrected by ST-DDGN from data periodically.

Graph Embedding Management +1

Learning to Select Cuts for Efficient Mixed-Integer Programming

no code implementations28 May 2021 Zeren Huang, Kerong Wang, Furui Liu, Hui-Ling Zhen, Weinan Zhang, Mingxuan Yuan, Jianye Hao, Yong Yu, Jun Wang

In the online A/B testing of the product planning problems with more than $10^7$ variables and constraints daily, Cut Ranking has achieved the average speedup ratio of 12. 42% over the production solver without any accuracy loss of solution.

Multiple Instance Learning

Raw Waveform Encoder with Multi-Scale Globally Attentive Locally Recurrent Networks for End-to-End Speech Recognition

no code implementations8 Jun 2021 Max W. Y. Lam, Jun Wang, Chao Weng, Dan Su, Dong Yu

End-to-end speech recognition generally uses hand-engineered acoustic features as input and excludes the feature extraction module from its joint optimization.

speech-recognition Speech Recognition

MM-AVS: A Full-Scale Dataset for Multi-modal Summarization

no code implementations NAACL 2021 Xiyan Fu, Jun Wang, Zhenglu Yang

Multimodal summarization becomes increasingly significant as it is the basis for question answering, Web search, and many other downstream tasks.

Question Answering

Two-Stage Self-Supervised Cycle-Consistency Network for Reconstruction of Thin-Slice MR Images

no code implementations29 Jun 2021 Zhiyang Lu, Zheng Li, Jun Wang, Jun Shi, Dinggang Shen

To this end, we propose a novel Two-stage Self-supervised Cycle-consistency Network (TSCNet) for MR slice interpolation, in which a two-stage self-supervised learning (SSL) strategy is developed for unsupervised DL network training.

Self-Supervised Learning

Viscos Flows: Variational Schur Conditional Sampling With Normalizing Flows

no code implementations6 Jul 2021 Vincent Moens, Aivar Sootla, Haitham Bou Ammar, Jun Wang

We present a method for conditional sampling for pre-trained normalizing flows when only part of an observation is available.

Putting words into the system's mouth: A targeted attack on neural machine translation using monolingual data poisoning

1 code implementation12 Jul 2021 Jun Wang, Chang Xu, Francisco Guzman, Ahmed El-Kishky, Yuqing Tang, Benjamin I. P. Rubinstein, Trevor Cohn

Neural machine translation systems are known to be vulnerable to adversarial test inputs, however, as we show in this paper, these systems are also vulnerable to training attacks.

Data Poisoning Machine Translation +3

Linking Health News to Research Literature

1 code implementation14 Jul 2021 Jun Wang, Bei Yu

Accurately linking news articles to scientific research works is a critical component in a number of applications, such as measuring the social impact of a research work and detecting inaccuracies or distortions in science news.

named-entity-recognition Named Entity Recognition +1

Distributed Learning for Time-varying Networks: A Scalable Design

no code implementations31 Jul 2021 Jian Wang, Yourui Huangfu, Rong Li, Yiqun Ge, Jun Wang

The wireless network is undergoing a trend from "onnection of things" to "connection of intelligence".

Federated Learning

A Novel 3D Non-Stationary GBSM for 6G THz Ultra-Massive MIMO Wireless Systems

no code implementations14 Aug 2021 Jun Wang, Cheng-Xiang Wang, Jie Huang, Haiming Wang, Xiqi Gao, Xiaohu You, Yang Hao

Terahertz (THz) communication is now being considered as one of possible technologies for the sixth generation (6G) wireless communication systems.

Is Nash Equilibrium Approximator Learnable?

no code implementations17 Aug 2021 Zhijian Duan, Wenhan Huang, Dinghuai Zhang, Yali Du, Jun Wang, Yaodong Yang, Xiaotie Deng

In this paper, we investigate the learnability of the function approximator that approximates Nash equilibrium (NE) for games generated from a distribution.

BIG-bench Machine Learning Meta-Learning +1

CMML: Contextual Modulation Meta Learning for Cold-Start Recommendation

no code implementations24 Aug 2021 Xidong Feng, Chen Chen, Dong Li, Mengchen Zhao, Jianye Hao, Jun Wang

Meta learning, especially gradient based one, can be adopted to tackle this problem by learning initial parameters of the model and thus allowing fast adaptation to a specific task from limited data examples.

Computational Efficiency Meta-Learning +1

Bilateral Denoising Diffusion Models

no code implementations26 Aug 2021 Max W. Y. Lam, Jun Wang, Rongjie Huang, Dan Su, Dong Yu

In this paper, we propose novel bilateral denoising diffusion models (BDDMs), which take significantly fewer steps to generate high-quality samples.

Denoising Scheduling

PGTRNet: Two-phase Weakly Supervised Object Detection with Pseudo Ground Truth Refinement

no code implementations25 Aug 2021 Jun Wang, Hefeng Zhou, Xiaohan Yu

There are two main problems hindering the performance of the two-phase WSOD approaches, i. e., insufficient learning problem and strict reliance between the FSD and the pseudo ground truth (PGT) generated by the WSOD model.

object-detection Weakly Supervised Object Detection

Top-N Recommendation with Counterfactual User Preference Simulation

no code implementations2 Sep 2021 Mengyue Yang, Quanyu Dai, Zhenhua Dong, Xu Chen, Xiuqiang He, Jun Wang

To alleviate this problem, in this paper, we propose to reformulate the recommendation task within the causal inference framework, which enables us to counterfactually simulate user ranking-based preferences to handle the data scarce problem.

Causal Inference counterfactual +1

On the Complexity of Computing Markov Perfect Equilibrium in General-Sum Stochastic Games

no code implementations4 Sep 2021 Xiaotie Deng, Ningyuan Li, David Mguni, Jun Wang, Yaodong Yang

Similar to the role of Markov decision processes in reinforcement learning, Stochastic Games (SGs) lay the foundation for the study of multi-agent reinforcement learning (MARL) and sequential agent interactions.

Multi-agent Reinforcement Learning reinforcement-learning +1

Recommendation Fairness: From Static to Dynamic

no code implementations5 Sep 2021 Dell Zhang, Jun Wang

Driven by the need to capture users' evolving interests and optimize their long-term experiences, more and more recommender systems have started to model recommendation as a Markov decision process and employ reinforcement learning to address the problem.

Fairness Recommendation Systems +2

Revisiting the Characteristics of Stochastic Gradient Noise and Dynamics

no code implementations20 Sep 2021 Yixin Wu, Rui Luo, Chen Zhang, Jun Wang, Yaodong Yang

In this paper, we characterize the noise of stochastic gradients and analyze the noise-induced dynamics during training deep neural networks by gradient-based optimizers.

Adaptive Curriculum Learning

no code implementations ICCV 2021 Yajing Kong, Liu Liu, Jun Wang, DaCheng Tao

Therefore, in contrast to recent works using a fixed curriculum, we devise a new curriculum learning method, Adaptive Curriculum Learning (Adaptive CL), adapting the difficulty of examples to the current state of the model.

Binary Classification

Online Markov Decision Processes with Non-oblivious Strategic Adversary

no code implementations7 Oct 2021 Le Cong Dinh, David Henry Mguni, Long Tran-Thanh, Jun Wang, Yaodong Yang

In this setting, we first demonstrate that MDP-Expert, an existing algorithm that works well with oblivious adversaries can still apply and achieve a policy regret bound of $\mathcal{O}(\sqrt{T \log(L)}+\tau^2\sqrt{ T \log(|A|)})$ where $L$ is the size of adversary's pure strategy set and $|A|$ denotes the size of agent's action space.

SynCLR: A Synthesis Framework for Contrastive Learning of out-of-domain Speech Representations

no code implementations29 Sep 2021 Rongjie Huang, Max W. Y. Lam, Jun Wang, Dan Su, Dong Yu, Zhou Zhao, Yi Ren

Learning generalizable speech representations for unseen samples in different domains has been a challenge with ever increasing importance to date.

Contrastive Learning Data Augmentation +4

Modeling Variable Space with Residual Tensor Networks for Multivariate Time Series

no code implementations29 Sep 2021 Jing Zhang, Peng Zhang, Yupeng He, Siwei Rao, Jun Wang, Guangjian Tian

In this framework, we derive the mathematical representation of the variable space, and then use a tensor network based on the idea of low-rank approximation to model the variable space.

Multivariate Time Series Forecasting Tensor Networks +2

A neural network framework for learning Green's function

no code implementations29 Sep 2021 Guochang Lin, Fukai Chen, Pipi Hu, Xiang Chen, Junqing Chen, Jun Wang, Zuoqiang Shi

Green's function plays a significant role in both theoretical analysis and numerical computing of partial differential equations (PDEs).

Informative Robust Causal Representation for Generalizable Deep Learning

no code implementations29 Sep 2021 Mengyue Yang, Furui Liu, Xu Chen, Zhitang Chen, Jianye Hao, Jun Wang

In many real-world scenarios, such as image classification and recommender systems, it is evidence that representation learning can improve model's performance over multiple downstream tasks.

counterfactual Image Classification +2

Continual Learning of Neural Networks for Realtime Wireline Cable Position Inference

no code implementations29 Sep 2021 Jun Wang, Tianxiang Su

In our experiments, we compared the proposed method with multiple state-of-the-art continual learning methods and the mREMIND network outperformed others both in accuracy and in disk space usage.

Continual Learning Position

Model-Based Robust Adaptive Semantic Segmentation

no code implementations29 Sep 2021 Jun Wang, Yiannis Kantaros

To mitigate this challenge, in this paper, we propose model-based robust adaptive training algorithm (MRTAdapt), a new training algorithm to enhance the robustness of DNN-based semantic segmentation methods against natural variations that leverages model-based robust training algorithms and generative adversarial networks.

Autonomous Vehicles Image Segmentation +2

Learning Explicit Credit Assignment for Multi-agent Joint Q-learning

no code implementations29 Sep 2021 Hangyu Mao, Jianye Hao, Dong Li, Jun Wang, Weixun Wang, Xiaotian Hao, Bin Wang, Kun Shao, Zhen Xiao, Wulong Liu

In contrast, we formulate an \emph{explicit} credit assignment problem where each agent gives its suggestion about how to weight individual Q-values to explicitly maximize the joint Q-value, besides guaranteeing the Bellman optimality of the joint Q-value.

Q-Learning

A channel attention based MLP-Mixer network for motor imagery decoding with EEG

no code implementations21 Oct 2021 Yanbin He, Zhiyang Lu, Jun Wang, Jun Shi

Convolutional neural networks (CNNs) and their variants have been successfully applied to the electroencephalogram (EEG) based motor imagery (MI) decoding task.

EEG Motor Imagery

Measuring the Non-Transitivity in Chess

no code implementations22 Oct 2021 Ricky Sanjaya, Jun Wang, Yaodong Yang

In this paper, we quantify the non-transitivity in Chess through real-world data from human players.

DESTA: A Framework for Safe Reinforcement Learning with Markov Games of Intervention

no code implementations27 Oct 2021 David Mguni, Usman Islam, Yaqi Sun, Xiuling Zhang, Joel Jennings, Aivar Sootla, Changmin Yu, Ziyan Wang, Jun Wang, Yaodong Yang

In this paper, we introduce a new generation of RL solvers that learn to minimise safety violations while maximising the task reward to the extent that can be tolerated by the safe policy.

OpenAI Gym reinforcement-learning +3

Dispensed Transformer Network for Unsupervised Domain Adaptation

no code implementations28 Oct 2021 Yunxiang Li, Jingxiong Li, Ruilong Dan, Shuai Wang, Kai Jin, Guodong Zeng, Jun Wang, Xiangji Pan, Qianni Zhang, Huiyu Zhou, Qun Jin, Li Wang, Yaqi Wang

To mitigate this problem, a novel unsupervised domain adaptation (UDA) method named dispensed Transformer network (DTNet) is introduced in this paper.

Unsupervised Domain Adaptation

A Game-Theoretic Approach for Improving Generalization Ability of TSP Solvers

no code implementations28 Oct 2021 Chenguang Wang, Yaodong Yang, Oliver Slumbers, Congying Han, Tiande Guo, Haifeng Zhang, Jun Wang

In this paper, we introduce a two-player zero-sum framework between a trainable \emph{Solver} and a \emph{Data Generator} to improve the generalization ability of deep learning-based solvers for Traveling Salesman Problem (TSP).

Traveling Salesman Problem

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