Search Results for author: Tian Wang

Found 33 papers, 8 papers with code

Latent Neural Operator Pretraining for Solving Time-Dependent PDEs

no code implementations26 Oct 2024 Tian Wang, Chuang Wang

We achieve universal transformation through pretraining on hybrid time-dependent PDE dataset to extract representations of different physical systems and solve various time-dependent PDEs in the latent space through finetuning on single PDE dataset.

Operator learning

Latent Neural Operator for Solving Forward and Inverse PDE Problems

1 code implementation6 Jun 2024 Tian Wang, Chuang Wang

In particular, we first propose Physics-Cross-Attention (PhCA) transforming representation from the geometric space to the latent space, then learn the operator in the latent space, and finally recover the real-world geometric space via the inverse PhCA map.

Computational Efficiency

Fed-Credit: Robust Federated Learning with Credibility Management

no code implementations20 May 2024 Jiayan Chen, Zhirong Qian, Tianhui Meng, Xitong Gao, Tian Wang, Weijia Jia

Aiming at privacy preservation, Federated Learning (FL) is an emerging machine learning approach enabling model training on decentralized devices or data sources.

Data Poisoning Federated Learning +1

Effective Gradient Sample Size via Variation Estimation for Accelerating Sharpness aware Minimization

no code implementations24 Feb 2024 Jiaxin Deng, Junbiao Pang, Baochang Zhang, Tian Wang

Concretely, we discover that the gradient of SAM is a combination of the gradient of SGD and the Projection of the Second-order gradient matrix onto the First-order gradient (PSF).

Adversarial Bandits with Multi-User Delayed Feedback: Theory and Application

1 code implementation17 Oct 2023 Yandi Li, Jianxiong Guo, Yupeng Li, Tian Wang, Weijia Jia

Thus, we formulate an adversarial MAB problem with multi-user delayed feedback and design a modified EXP3 algorithm MUD-EXP3, which makes a decision at each round by considering the importance-weighted estimator of the received feedback from different users.

A Fast Task Offloading Optimization Framework for IRS-Assisted Multi-Access Edge Computing System

1 code implementation17 Jul 2023 Jianqiu Wu, Zhongyi Yu, Jianxiong Guo, Zhiqing Tang, Tian Wang, Weijia Jia

Terahertz communication networks and intelligent reflecting surfaces exhibit significant potential in advancing wireless networks, particularly within the domain of aerial-based multi-access edge computing systems.

Combinatorial Optimization Edge-computing

DCP-NAS: Discrepant Child-Parent Neural Architecture Search for 1-bit CNNs

no code implementations27 Jun 2023 Yanjing Li, Sheng Xu, Xianbin Cao, Li'an Zhuo, Baochang Zhang, Tian Wang, Guodong Guo

One natural approach is to use 1-bit CNNs to reduce the computation and memory cost of NAS by taking advantage of the strengths of each in a unified framework, while searching the 1-bit CNNs is more challenging due to the more complicated processes involved.

Neural Architecture Search object-detection +2

Few-Shot Learning with Visual Distribution Calibration and Cross-Modal Distribution Alignment

1 code implementation CVPR 2023 Runqi Wang, Hao Zheng, Xiaoyue Duan, Jianzhuang Liu, Yuning Lu, Tian Wang, Songcen Xu, Baochang Zhang

However, with only a few training images, there exist two crucial problems: (1) the visual feature distributions are easily distracted by class-irrelevant information in images, and (2) the alignment between the visual and language feature distributions is difficult.

Few-Shot Learning

Configurable Spatial-Temporal Hierarchical Analysis for Flexible Video Anomaly Detection

no code implementations12 May 2023 Kai Cheng, Xinhua Zeng, Yang Liu, Tian Wang, Chengxin Pang, Jing Teng, Zhaoyang Xia, Jing Liu

Since the anomaly set is complicated and unbounded, our STHA can adjust its detection ability to adapt to the human detection demands and the complexity degree of anomaly that happened in the history of a scene.

Anomaly Detection Human Detection +2

GPT4Rec: A Generative Framework for Personalized Recommendation and User Interests Interpretation

no code implementations8 Apr 2023 Jinming Li, Wentao Zhang, Tian Wang, Guanglei Xiong, Alan Lu, Gerard Medioni

The generated queries naturally serve as interpretable representations of user interests and can be searched to recommend cold-start items.

Diversity Language Modelling +1

A Semi-supervised Sensing Rate Learning based CMAB Scheme to Combat COVID-19 by Trustful Data Collection in the Crowd

no code implementations17 Jan 2023 Jianheng Tang, Kejia Fan, Wenxuan Xie, Luomin Zeng, Feijiang Han, Guosheng Huang, Tian Wang, Anfeng Liu, Shaobo Zhang

In this paper, an incentive mechanism named Semi-supervision based Combinatorial Multi-Armed Bandit reverse Auction (SCMABA) is proposed to solve the recruitment problem of multiple unknown and strategic workers in MCS.

Rethinking the Number of Shots in Robust Model-Agnostic Meta-Learning

no code implementations28 Nov 2022 Xiaoyue Duan, Guoliang Kang, Runqi Wang, Shumin Han, Song Xue, Tian Wang, Baochang Zhang

Based on this observation, we propose a simple strategy, i. e., increasing the number of training shots, to mitigate the loss of intrinsic dimension caused by robustness-promoting regularization.

Meta-Learning

CAIBC: Capturing All-round Information Beyond Color for Text-based Person Retrieval

no code implementations13 Sep 2022 Zijie Wang, Aichun Zhu, Jingyi Xue, Xili Wan, Chao Liu, Tian Wang, Yifeng Li

Indeed, color information is an important decision-making accordance for retrieval, but the over-reliance on color would distract the model from other key clues (e. g. texture information, structural information, etc.

Decision Making Person Retrieval +3

Contrastive Learning for Interactive Recommendation in Fashion

no code implementations25 Jul 2022 Karin Sevegnani, Arjun Seshadri, Tian Wang, Anurag Beniwal, Julian McAuley, Alan Lu, Gerard Medioni

Recommender systems and search are both indispensable in facilitating personalization and ease of browsing in online fashion platforms.

Contrastive Learning Recommendation Systems +1

Bi-level Doubly Variational Learning for Energy-based Latent Variable Models

no code implementations CVPR 2022 Ge Kan, Jinhu Lü, Tian Wang, Baochang Zhang, Aichun Zhu, Lei Huang, Guodong Guo, Hichem Snoussi

In this paper, we propose Bi-level doubly variational learning (BiDVL), which is based on a new bi-level optimization framework and two tractable variational distributions to facilitate learning EBLVMs.

Image Generation Image Reconstruction +1

Delving into the Estimation Shift of Batch Normalization in a Network

1 code implementation CVPR 2022 Lei Huang, Yi Zhou, Tian Wang, Jie Luo, Xianglong Liu

We define the estimation shift magnitude of BN to quantitatively measure the difference between its estimated population statistics and expected ones.

DSSL: Deep Surroundings-person Separation Learning for Text-based Person Retrieval

1 code implementation12 Sep 2021 Aichun Zhu, Zijie Wang, Yifeng Li, Xili Wan, Jing Jin, Tian Wang, Fangqiang Hu, Gang Hua

Many previous methods on text-based person retrieval tasks are devoted to learning a latent common space mapping, with the purpose of extracting modality-invariant features from both visual and textual modality.

Person Retrieval Retrieval +2

Personalized Embedding-based e-Commerce Recommendations at eBay

no code implementations11 Feb 2021 Tian Wang, Yuri M. Brovman, Sriganesh Madhvanath

Recommender systems are an essential component of e-commerce marketplaces, helping consumers navigate massive amounts of inventory and find what they need or love.

Data Ablation Navigate +1

IDARTS: Interactive Differentiable Architecture Search

no code implementations ICCV 2021 Song Xue, Runqi Wang, Baochang Zhang, Tian Wang, Guodong Guo, David Doermann

Differentiable Architecture Search (DARTS) improves the efficiency of architecture search by learning the architecture and network parameters end-to-end.

Item-based Collaborative Filtering with BERT

no code implementations WS 2020 Tian Wang, Yuyangzi Fu

In e-commerce, recommender systems have become an indispensable part of helping users explore the available inventory.

Collaborative Filtering Recommendation Systems

Mimic and Rephrase: Reflective Listening in Open-Ended Dialogue

no code implementations CONLL 2019 Justin Dieter, Tian Wang, Arun Tejasvi Chaganty, Gabor Angeli, Angel X. Chang

Reflective listening{--}demonstrating that you have heard your conversational partner{--}is key to effective communication.

Multi-Kernel Capsule Network for Schizophrenia Identification

no code implementations30 Jul 2019 Tian Wang, Anastasios Bezerianos, Andrzej Cichocki, Junhua Li

Methods: To overcome the aforementioned drawbacks, we proposed a multi-kernel capsule network (MKCapsnet), which was developed by considering the brain anatomical structure.

Functional Connectivity

Accelerating temporal action proposal generation via high performance computing

no code implementations15 Jun 2019 Tian Wang, Shiye Lei, Youyou Jiang, Choi Chang, Hichem Snoussi, Guangcun Shan

It is found that, compared to the traditional Parameter Server architecture, our parallel architecture has higher efficiency on temporal action detection task with multiple GPUs, which is suitable for dealing with the tasks of temporal action proposal generation, especially for large datasets of millions of videos.

Action Detection Action Recognition +2

Attention-based Mixture Density Recurrent Networks for History-based Recommendation

no code implementations22 Sep 2017 Tian Wang, Kyunghyun Cho

The goal of personalized history-based recommendation is to automatically output a distribution over all the items given a sequence of previous purchases of a user.

SAM: Semantic Attribute Modulation for Language Modeling and Style Variation

no code implementations1 Jul 2017 Wenbo Hu, Lifeng Hua, Lei LI, Hang Su, Tian Wang, Ning Chen, Bo Zhang

This paper presents a Semantic Attribute Modulation (SAM) for language modeling and style variation.

Attribute Language Modelling

adaptive direction information in differential evolution for numerical optimization

no code implementations2 Feb 2016 Yiqiao Cai, Jiahai Wang, Yonghong Chen, Tian Wang, Hui Tian, Wei Luo

In most of the DE algorithms, the neighborhood and direction information are not fully and simultaneously exploited to guide the search.

Automatic Instrument Recognition in Polyphonic Music Using Convolutional Neural Networks

1 code implementation17 Nov 2015 Peter Li, Jiyuan Qian, Tian Wang

Traditional methods to tackle many music information retrieval tasks typically follow a two-step architecture: feature engineering followed by a simple learning algorithm.

Feature Engineering Information Retrieval +3

Larger-Context Language Modelling

no code implementations11 Nov 2015 Tian Wang, Kyunghyun Cho

In the experi- ments, we evaluate the proposed approach while varying the number of context sentences and observe that the proposed late fusion is superior to the usual way of incorporating additional inputs to the LSTM.

Language Modelling Sentence

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