no code implementations • EMNLP 2020 • Hui Su, Xiaoyu Shen, Zhou Xiao, Zheng Zhang, Ernie Chang, Cheng Zhang, Cheng Niu, Jie zhou
In this work, we take a close look at the movie domain and present a large-scale high-quality corpus with fine-grained annotations in hope of pushing the limit of movie-domain chatbots.
1 code implementation • NAACL 2022 • Pei Chen, Haotian Xu, Cheng Zhang, Ruihong Huang
General domain Named Entity Recognition (NER) datasets like CoNLL-2003 mostly annotate coarse-grained location entities such as a country or a city.
no code implementations • COLING 2022 • Xiaofeng Qi, Chao Li, Zhongping Liang, Jigang Liu, Cheng Zhang, Yuanxin Wei, Lin Yuan, Guang Yang, Lanxiao Huang, Min Li
This paper introduces a generative system for in-battle real-time commentary in mobile MOBA games.
no code implementations • 28 Nov 2023 • Zhengming Zhang, Yongming Huang, Cheng Zhang, Qingbi Zheng, Luxi Yang, Xiaohu You
In this paper, a framework consisting of a digital twin and reinforcement learning agents is present to handle the issue.
no code implementations • 7 Nov 2023 • Shantanu Gupta, Cheng Zhang, Agrin Hilmkil
In this work, we propose CAusal Method Predictor (CAMP), a framework for predicting the best method for a given dataset.
1 code implementation • NeurIPS 2023 • Tianyu Xie, Cheng Zhang
Designing flexible probabilistic models over tree topologies is important for developing efficient phylogenetic inference methods.
1 code implementation • 8 Oct 2023 • Cheng Zhang, Jianyi Cheng, Ilia Shumailov, George A. Constantinides, Yiren Zhao
In this work, we explore the statistical and learning properties of the LLM layer and attribute the bottleneck of LLM quantisation to numerical scaling offsets.
no code implementations • 3 Oct 2023 • Cheng Zhang, Nilam Nur Amir Sjarif, Roslina Ibrahim
Given the superiority of capsule network (CapsNet) over CNN in various forecasting and classification tasks, this study investigates the potential of integrating a 1D CapsNet with an LSTM network for multi-step stock index forecasting.
no code implementations • 1 Oct 2023 • JiaQi Zhang, Joel Jennings, Cheng Zhang, Chao Ma
Foundation models have brought changes to the landscape of machine learning, demonstrating sparks of human-level intelligence across a diverse array of tasks.
1 code implementation • ICCV 2023 • Cheng Zhang, Xuanbai Chen, Siqi Chai, Chen Henry Wu, Dmitry Lagun, Thabo Beeler, Fernando de la Torre
We show that, for some attributes, images can represent concepts more expressively than text.
no code implementations • 22 Aug 2023 • Ceyao Zhang, Kaijie Yang, Siyi Hu, ZiHao Wang, Guanghe Li, Yihang Sun, Cheng Zhang, Zhaowei Zhang, Anji Liu, Song-Chun Zhu, Xiaojun Chang, Junge Zhang, Feng Yin, Yitao Liang, Yaodong Yang
Experimental evaluations conducted within the framework of \textit{Overcook-AI} unveil the remarkable performance superiority of ProAgent, outperforming five methods based on self-play and population-based training in cooperation with AI agents.
1 code implementation • 19 Aug 2023 • Longlin Yu, Cheng Zhang
Semi-implicit variational inference (SIVI) greatly enriches the expressiveness of variational families by considering implicit variational distributions defined in a hierarchical manner.
no code implementations • 6 Aug 2023 • Cheng Zhang, Yu Zhu, Qingsen Yan, Jinqiu Sun, Yanning Zhang
To address this issue, we propose a novel All-in-one Multi-degradation Image Restoration Network (AMIRNet) that can effectively capture and utilize accurate degradation representation for image restoration.
1 code implementation • 26 Jul 2023 • Yashas Annadani, Nick Pawlowski, Joel Jennings, Stefan Bauer, Cheng Zhang, Wenbo Gong
Bayesian causal discovery aims to infer the posterior distribution over causal models from observed data, quantifying epistemic uncertainty and benefiting downstream tasks.
1 code implementation • 2 Jun 2023 • Shaoyuan Huang, Zheng Wang, Heng Zhang, Xiaofei Wang, Cheng Zhang, Wenyu Wang
In this paper, we propose an end-to-end framework with global pooling and static content awareness, DynEformer, to provide a unified workload prediction scheme for dynamic MT-ECP.
1 code implementation • 25 May 2023 • Zhiyu Tan, ZiChao Dong, Cheng Zhang, Weikun Zhang, Hang Ji, Hao Li
Semantic occupancy prediction aims to infer dense geometry and semantics of surroundings for an autonomous agent to operate safely in the 3D environment.
no code implementations • ICCV 2023 • Cheng Sun, Guangyan Cai, Zhengqin Li, Kai Yan, Cheng Zhang, Carl Marshall, Jia-Bin Huang, Shuang Zhao, Zhao Dong
In the last stage, initialized by the neural predictions, we perform PBIR to refine the initial results and obtain the final high-quality reconstruction of object shape, material, and illumination.
no code implementations • 21 Apr 2023 • Cheng Zhang, Nilam Nur Amir Sjarif, Roslina Ibrahim
Accurately predicting the prices of financial time series is essential and challenging for the financial sector.
no code implementations • 11 Apr 2023 • Cheng Zhang, Stefan Bauer, Paul Bennett, Jiangfeng Gao, Wenbo Gong, Agrin Hilmkil, Joel Jennings, Chao Ma, Tom Minka, Nick Pawlowski, James Vaughan
We assess the ability of large language models (LLMs) to answer causal questions by analyzing their strengths and weaknesses against three types of causal question.
no code implementations • 25 Mar 2023 • Cheng Zhang
Moreover, we present a novel approach to automatically generate adequate distractors for a given QAP.
1 code implementation • 22 Mar 2023 • Matthew Ashman, Chao Ma, Agrin Hilmkil, Joel Jennings, Cheng Zhang
In this work, we further extend the existing body of work and develop a novel gradient-based approach to learning an ADMG with non-linear functional relations from observational data.
1 code implementation • 27 Feb 2023 • Desi R. Ivanova, Joel Jennings, Tom Rainforth, Cheng Zhang, Adam Foster
We formalize the problem of contextual optimization through the lens of Bayesian experimental design and propose CO-BED -- a general, model-agnostic framework for designing contextual experiments using information-theoretic principles.
1 code implementation • 17 Feb 2023 • Cheng Zhang
Structural information of phylogenetic tree topologies plays an important role in phylogenetic inference.
no code implementations • 24 Jan 2023 • Ruibo Tu, Chao Ma, Cheng Zhang
ChatGPT has demonstrated exceptional proficiency in natural language conversation, e. g., it can answer a wide range of questions while no previous large language models can.
1 code implementation • CVPR 2023 • Cheng Zhang, Hai Liu, Yongjian Deng, Bochen Xie, Youfu Li
To leverage the observed findings, we propose a novel critical minority relationship-aware method based on the Transformer architecture in which the facial part relationships can be learned.
no code implementations • TIP 2022 • Hai Liu, Cheng Zhang, Yongjian Deng, Bochen Xie, Tingting Liu, Zhaoli Zhang, You-Fu Li
To this end, two novel modules are proposed to leverage the characteristics of bird images, namely, the hierarchy stage feature aggregation (HSFA) module and the feature in feature abstraction (FFA) module.
Ranked #4 on
Fine-Grained Image Classification
on NABirds
no code implementations • 14 Nov 2022 • Xin Hua, Zhijiang Du, Hongjian Yu, Jixin Ma, Fanjun Zheng, Cheng Zhang, Qiaohui Lu, Hui Zhao
Cochlear implantation is currently the most effective treatment for patients with severe deafness, but mastering cochlear implantation is extremely challenging because the temporal bone has extremely complex and small three-dimensional anatomical structures, and it is important to avoid damaging the corresponding structures when performing surgery.
no code implementations • 27 Oct 2022 • Jun Lv, Yunhai Feng, Cheng Zhang, Shuang Zhao, Lin Shao, Cewu Lu
Model-based reinforcement learning (MBRL) is recognized with the potential to be significantly more sample-efficient than model-free RL.
Deformable Object Manipulation
Model-based Reinforcement Learning
+2
no code implementations • 26 Oct 2022 • Wenbo Gong, Joel Jennings, Cheng Zhang, Nick Pawlowski
Given the complexity of real-world relationships and the nature of observations in discrete time, causal discovery methods need to consider non-linear relations between variables, instantaneous effects and history-dependent noise (the change of noise distribution due to past actions).
no code implementations • 20 Oct 2022 • Cheng Zhang, Jie Wang
Transformer-based QG models can generate question-answer pairs (QAPs) with high qualities, but may also generate silly questions for certain texts.
1 code implementation • 18 Sep 2022 • Marcus Klasson, Hedvig Kjellström, Cheng Zhang
In such settings, we propose that continual learning systems should learn the time to learn and schedule which tasks to replay at different time steps.
no code implementations • 2 Sep 2022 • Julia Grosse, Cheng Zhang, Philipp Hennig
Bayesian optimization is a popular formalism for global optimization, but its computational costs limit it to expensive-to-evaluate functions.
no code implementations • 17 Aug 2022 • Wenbo Gong, Digory Smith, Zichao Wang, Craig Barton, Simon Woodhead, Nick Pawlowski, Joel Jennings, Cheng Zhang
In this competition, participants will address two fundamental causal challenges in machine learning in the context of education using time-series data.
no code implementations • 12 Jul 2022 • Desi R. Ivanova, Joel Jennings, Cheng Zhang, Adam Foster
In this paper we introduce a model-agnostic framework for gathering data to evaluate and improve contextual decision making through Bayesian Experimental Design.
1 code implementation • 15 May 2022 • Cheng Zhang, Hao Zhang, Jie Wang
We present a system called TP3 to perform a downstream task of transformers on generating question-answer pairs (QAPs) from a given article.
1 code implementation • 16 Apr 2022 • Cheng Zhang, Frederick A. Matsen IV
Bayesian phylogenetic inference is currently done via Markov chain Monte Carlo (MCMC) with simple proposal mechanisms.
1 code implementation • CVPR 2022 • Cheng Zhang, Shaolin Su, Yu Zhu, Qingsen Yan, Jinqiu Sun, Yanning Zhang
In this paper, to better study an image's potential value that can be explored for restoration, we propose a novel concept, referring to image restoration potential (IRP).
no code implementations • 21 Mar 2022 • Cheng Zhang, Jian Shi, Xuan Deng, Zizhao Wu
In computer-aided design (CAD) community, the point cloud data is pervasively applied in reverse engineering, where the point cloud analysis plays an important role.
1 code implementation • 3 Mar 2022 • Philip Versteeg, Cheng Zhang, Joris M. Mooij
We consider the problem of discovering causal relations from independence constraints selection bias in addition to confounding is present.
no code implementations • 22 Feb 2022 • Cheng Zhang, Tai-Yu Pan, Tianle Chen, Jike Zhong, WenJin Fu, Wei-Lun Chao
One fundamental challenge in building an instance segmentation model for a large number of classes in complex scenes is the lack of training examples, especially for rare objects.
no code implementations • CVPR 2022 • Zirui Peng, Shaofeng Li, Guoxing Chen, Cheng Zhang, Haojin Zhu, Minhui Xue
In this paper, we propose a novel and practical mechanism which enables the service provider to verify whether a suspect model is stolen from the victim model via model extraction attacks.
no code implementations • 10 Feb 2022 • Soheil Sadeghi Eshkevari, Xiaocheng Tang, Zhiwei Qin, Jinhan Mei, Cheng Zhang, Qianying Meng, Jia Xu
In this study, a real-time dispatching algorithm based on reinforcement learning is proposed and for the first time, is deployed in large scale.
1 code implementation • 4 Feb 2022 • Tomas Geffner, Javier Antoran, Adam Foster, Wenbo Gong, Chao Ma, Emre Kiciman, Amit Sharma, Angus Lamb, Martin Kukla, Nick Pawlowski, Miltiadis Allamanis, Cheng Zhang
Causal inference is essential for data-driven decision making across domains such as business engagement, medical treatment and policy making.
no code implementations • ICLR 2022 • Ruibo Tu, Kun Zhang, Hedvig Kjellström, Cheng Zhang
With this criterion, we propose a novel optimal transport-based algorithm for ANMs which is robust to the choice of models and extend it to post-nonlinear models.
1 code implementation • NeurIPS 2021 • Chao Ma, Cheng Zhang
In this work, we fill in this gap by systematically analyzing the identifiability of generative models under MNAR.
1 code implementation • 15 Oct 2021 • Pablo Morales-Alvarez, Wenbo Gong, Angus Lamb, Simon Woodhead, Simon Peyton Jones, Nick Pawlowski, Miltiadis Allamanis, Cheng Zhang
Learning structures between groups of variables from data with missing values is an important task in the real world, yet difficult to solve.
no code implementations • 29 Sep 2021 • Tomas Geffner, Emre Kiciman, Angus Lamb, Martin Kukla, Miltiadis Allamanis, Cheng Zhang
Current causal discovery methods either fail to scale, model only limited forms of functional relationships, or cannot handle missing values.
no code implementations • 29 Sep 2021 • Marcus Klasson, Hedvig Kjellstrom, Cheng Zhang
Inspired by human learning, we illustrate that scheduling over which tasks to revisit is critical to the final performance with finite memory resources.
no code implementations • 29 Sep 2021 • Zhixuan Chu, Tan Yan, Yue Wu, Yi Xu, Cheng Zhang, Yulin kang
Time series forecasting has historically been a key area of academic research and industrial applications.
no code implementations • 29 Sep 2021 • Yang Hu, Cheng Zhang
In this paper we propose a new method to stabilize the training process of the latent variables of adversarial auto-encoders, which we name Intervention Adversarial auto-encoder (IVAAE).
1 code implementation • EMNLP 2021 • Jihyung Kil, Cheng Zhang, Dong Xuan, Wei-Lun Chao
We found that many of the "unknowns" to the learned VQA model are indeed "known" in the dataset implicitly.
1 code implementation • 27 Aug 2021 • Amit Sharma, Vasilis Syrgkanis, Cheng Zhang, Emre Kiciman
Estimation of causal effects involves crucial assumptions about the data-generating process, such as directionality of effect, presence of instrumental variables or mediators, and whether all relevant confounders are observed.
1 code implementation • ICCV 2021 • Cheng Zhang, Zhaopeng Cui, Cai Chen, Shuaicheng Liu, Bing Zeng, Hujun Bao, yinda zhang
Panorama images have a much larger field-of-view thus naturally encode enriched scene context information compared to standard perspective images, which however is not well exploited in the previous scene understanding methods.
no code implementations • 17 Aug 2021 • Cheng Zhang, Arthur Azevedo de Amorim, Marco Gaboardi
In his seminal work, Kozen proved that KAT subsumes propositional Hoare logic, showing that one can reason about the (partial) correctness of while programs by means of the equational theory of KAT.
2 code implementations • 13 Aug 2021 • Cheng Zhang, Haocheng Wan, Xinyi Shen, Zizhao Wu
The recently developed pure Transformer architectures have attained promising accuracy on point cloud learning benchmarks compared to convolutional neural networks.
Ranked #18 on
3D Part Segmentation
on ShapeNet-Part
no code implementations • 28 Jul 2021 • Cheng Zhang, Jinwoo Kim, JungHo Jeon, Jinding Xing, Changbum Ahn, Pingbo Tang, Hubo Cai
This paper will lay the foundation for identifying relevant studies to form a research roadmap to address the four knowledge gaps identified.
1 code implementation • NeurIPS 2021 • Tai-Yu Pan, Cheng Zhang, Yandong Li, Hexiang Hu, Dong Xuan, Soravit Changpinyo, Boqing Gong, Wei-Lun Chao
We propose NorCal, Normalized Calibration for long-tailed object detection and instance segmentation, a simple and straightforward recipe that reweighs the predicted scores of each class by its training sample size.
no code implementations • 25 Jun 2021 • Cheng Zhang, Pan Gao
Prior work has shown that JPEG compression can combat the drop in classification accuracy on adversarial examples to some extent.
no code implementations • ICML Workshop AML 2021 • Cheng Zhang, Pan Gao
We propose a modified VAE (variational autoencoder) as a denoiser to remove adversarial perturbations for image classification.
no code implementations • 16 Jun 2021 • Julia Grosse, Cheng Zhang, Philipp Hennig
Exciting contemporary machine learning problems have recently been phrased in the classic formalism of tree search -- most famously, the game of Go.
no code implementations • NeurIPS 2021 • Hippolyt Ritter, Martin Kukla, Cheng Zhang, Yingzhen Li
Bayesian neural networks and deep ensembles represent two modern paradigms of uncertainty quantification in deep learning.
no code implementations • 27 May 2021 • Varun Chandrasekaran, Darren Edge, Somesh Jha, Amit Sharma, Cheng Zhang, Shruti Tople
However for real-world applications, the privacy of data is critical.
no code implementations • 22 Apr 2021 • Michael Karcher, Cheng Zhang, Frederick A Matsen IV
Given overlapping subsets of a set of taxa (e. g. species), and posterior distributions on phylogenetic tree topologies for each of these taxon sets, how can we infer a posterior distribution on phylogenetic tree topologies for the entire taxon set?
no code implementations • 12 Apr 2021 • Angus Lamb, Evgeny Saveliev, Yingzhen Li, Sebastian Tschiatschek, Camilla Longden, Simon Woodhead, José Miguel Hernández-Lobato, Richard E. Turner, Pashmina Cameron, Cheng Zhang
While deep learning has obtained state-of-the-art results in many applications, the adaptation of neural network architectures to incorporate new output features remains a challenge, as neural networks are commonly trained to produce a fixed output dimension.
1 code implementation • CVPR 2021 • Cheng Zhang, Zhaopeng Cui, yinda zhang, Bing Zeng, Marc Pollefeys, Shuaicheng Liu
We not only propose an image-based local structured implicit network to improve the object shape estimation, but also refine the 3D object pose and scene layout via a novel implicit scene graph neural network that exploits the implicit local object features.
Ranked #1 on
Monocular 3D Object Detection
on SUN RGB-D
(using extra training data)
no code implementations • 9 Mar 2021 • Xiaoqi Huang, Cheng Zhang
We consider the Schr\"odinger operators $H_V=-\Delta_g+V$ with singular potentials $V$ on general $n$-dimensional Riemannian manifolds and study whether various forms of pointwise Weyl law remain valid under this pertubation.
Analysis of PDEs Mathematical Physics Classical Analysis and ODEs Functional Analysis Mathematical Physics Spectral Theory 58J50, 35P15
no code implementations • 22 Feb 2021 • Cheng Zhang, Yunze Pan, Yunqi Zhang, Adam C. Champion, Zhaohui Shen, Dong Xuan, Zhiqiang Lin, Ness B. Shroff
Further, the evaluation shows no consistent differences among three vertex centrality measures for long-term (i. e., weekly) contact graphs, which necessitates the inclusion of SEIR simulation in our framework.
Social and Information Networks Computers and Society
1 code implementation • ICCV 2021 • Cheng Zhang, Tai-Yu Pan, Yandong Li, Hexiang Hu, Dong Xuan, Soravit Changpinyo, Boqing Gong, Wei-Lun Chao
Many objects do not appear frequently enough in complex scenes (e. g., certain handbags in living rooms) for training an accurate object detector, but are often found frequently by themselves (e. g., in product images).
1 code implementation • 22 Jan 2021 • Tabish Rashid, Cheng Zhang, Kamil Ciosek
We show the benefits of using information gain as compared to the confidence interval criterion of ResponseGraphUCB (Rowland et al. 2019), and provide theoretical results justifying our method.
no code implementations • 1 Jan 2021 • Jiadong Liang, Liangyu Zhang, Cheng Zhang, Zhihua Zhang
In this paper we propose a novel approach for stabilizing the training process of Generative Adversarial Networks as well as alleviating the mode collapse problem.
1 code implementation • NeurIPS 2020 • Cheng Zhang
By handling the non-Euclidean branch length space of phylogenetic models with carefully designed permutation equivariant transformations, VBPI-NF uses normalizing flows to provide a rich family of flexible branch length distributions that generalize across different tree topologies.
no code implementations • SEMEVAL 2020 • Cheng Zhang, Hayato Yamana
For subtask B, we simply use a sequence-pair BERT model, the official accuracy of which is 0. 53196 and ranks 25th out of 32.
no code implementations • 26 Nov 2020 • Yongming Huang, Shengheng Liu, Cheng Zhang, Xiaohu You, Hequan Wu
Future beyond fifth-generation (B5G) and sixth-generation (6G) mobile communications will shift from facilitating interpersonal communications to supporting Internet of Everything (IoE), where intelligent communications with full integration of big data and artificial intelligence (AI) will play an important role in improving network efficiency and providing high-quality service.
no code implementations • NeurIPS Workshop LMCA 2020 • Haiyan Yin, Yingzhen Li, Sinno Jialin Pan, Cheng Zhang, Sebastian Tschiatschek
Solving real-life sequential decision making problems under partial observability involves an exploration-exploitation problem.
no code implementations • 28 Oct 2020 • Philip J. Ball, Yingzhen Li, Angus Lamb, Cheng Zhang
We study a setting where the pruning phase is given a time budget, and identify connections between iterative pruning and multiple sleep cycles in humans.
no code implementations • 23 Oct 2020 • Changfeng Yu, Cheng Zhang, Jie Wang
Accurate extraction of body text from PDF-formatted academic documents is essential in text-mining applications for deeper semantic understandings.
no code implementations • 23 Oct 2020 • Cheng Zhang, Yicheng Sun, Hejia Chen, Jie Wang
This paper presents a novel approach to automatic generation of adequate distractors for a given question-answer pair (QAP) generated from a given article to form an adequate multiple-choice question (MCQ).
1 code implementation • NeurIPS 2020 • Xueru Zhang, Ruibo Tu, Yang Liu, Mingyan Liu, Hedvig Kjellström, Kun Zhang, Cheng Zhang
Our results show that static fairness constraints can either promote equality or exacerbate disparity depending on the driving factor of qualification transitions and the effect of sensitive attributes on feature distributions.
no code implementations • 15 Oct 2020 • Ling Wang, Cheng Zhang, Zejian Luo, ChenGuang Liu, Jie Liu, Xi Zheng, Athanasios Vasilakos
To reduce the computational cost without loss of generality, we present a defense strategy called a progressive defense against adversarial attacks (PDAAA) for efficiently and effectively filtering out the adversarial pixel mutations, which could mislead the neural network towards erroneous outputs, without a-priori knowledge about the attack type.
1 code implementation • 4 Oct 2020 • Wenlin Yao, Cheng Zhang, Shiva Saravanan, Ruihong Huang, Ali Mostafavi
People increasingly use social media to report emergencies, seek help or share information during disasters, which makes social networks an important tool for disaster management.
no code implementations • 4 Oct 2020 • Cheng Zhang, Jie Wang
Creating multiple-choice questions to assess reading comprehension of a given article involves generating question-answer pairs (QAPs) on the main points of the document.
no code implementations • 4 Sep 2020 • Chang Liu, Jiahui Sun, Haiming Jin, Meng Ai, Qun Li, Cheng Zhang, Kehua Sheng, Guobin Wu, XiaoHu Qie, Xinbing Wang
Thus, in this paper, we exploit adaptive dispatching intervals to boost the platform's profit under a guarantee of the maximum passenger waiting time.
no code implementations • 9 Aug 2020 • Jiadong Liang, Liangyu Zhang, Cheng Zhang, Zhihua Zhang
In this paper we propose a novel approach for stabilizing the training process of Generative Adversarial Networks as well as alleviating the mode collapse problem.
1 code implementation • 23 Jul 2020 • James Jordon, Daniel Jarrett, Jinsung Yoon, Tavian Barnes, Paul Elbers, Patrick Thoral, Ari Ercole, Cheng Zhang, Danielle Belgrave, Mihaela van der Schaar
The clinical time-series setting poses a unique combination of challenges to data modeling and sharing.
no code implementations • 23 Jul 2020 • Zichao Wang, Angus Lamb, Evgeny Saveliev, Pashmina Cameron, Yordan Zaykov, José Miguel Hernández-Lobato, Richard E. Turner, Richard G. Baraniuk, Craig Barton, Simon Peyton Jones, Simon Woodhead, Cheng Zhang
In this competition, participants will focus on the students' answer records to these multiple-choice diagnostic questions, with the aim of 1) accurately predicting which answers the students provide; 2) accurately predicting which questions have high quality; and 3) determining a personalized sequence of questions for each student that best predicts the student's answers.
no code implementations • 16 Jul 2020 • Luke Harries, Rebekah Storan Clarke, Timothy Chapman, Swamy V. P. L. N. Nallamalli, Levent Ozgur, Shuktika Jain, Alex Leung, Steve Lim, Aaron Dietrich, José Miguel Hernández-Lobato, Tom Ellis, Cheng Zhang, Kamil Ciosek
Efficient software testing is essential for productive software development and reliable user experiences.
no code implementations • 6 Jul 2020 • Ruqi Zhang, Yingzhen Li, Christopher De Sa, Sam Devlin, Cheng Zhang
Variational inference (VI) plays an essential role in approximate Bayesian inference due to its computational efficiency and broad applicability.
2 code implementations • NeurIPS 2020 • Chao Ma, Sebastian Tschiatschek, José Miguel Hernández-Lobato, Richard Turner, Cheng Zhang
Deep generative models often perform poorly in real-world applications due to the heterogeneity of natural data sets.
no code implementations • 13 Jun 2020 • Cheng Zhang
The number of static human poses is limited, it is hard to retrieve the exact videos using one single pose as the clue.
no code implementations • 7 Jun 2020 • Cheng Zhang, Francine Chen, Yan-Ying Chen
In this paper, we propose an alternative approach that learns discriminative features among triplets of images and cyclically trains on region features to verify whether attentive regions contain information indicative of a disease.
no code implementations • 20 May 2020 • Cheng Zhang, Qingsen Yan, Yu Zhu, Xianjun Li, Jinqiu Sun, Yanning Zhang
Extensive experiments demonstrate the superiority of the proposed network in terms of suppressing the chromatic aberration and noise artifacts in enhancement, especially when the low-light image has severe noise.
no code implementations • 3 May 2020 • Cheng Zhang, Kun Zhang, Yingzhen Li
We present a causal view on the robustness of neural networks against input manipulations, which applies not only to traditional classification tasks but also to general measurement data.
no code implementations • ICLR 2020 • Jacob Beck, Kamil Ciosek, Sam Devlin, Sebastian Tschiatschek, Cheng Zhang, Katja Hofmann
In many partially observable scenarios, Reinforcement Learning (RL) agents must rely on long-term memory in order to learn an optimal policy.
no code implementations • ACL 2020 • Hengyi Cai, Hongshen Chen, Yonghao Song, Cheng Zhang, Xiaofang Zhao, Dawei Yin
In this paper, we propose a data manipulation framework to proactively reshape the data distribution towards reliable samples by augmenting and highlighting effective learning samples as well as reducing the effect of inefficient samples simultaneously.
no code implementations • 12 Mar 2020 • Zichao Wang, Sebastian Tschiatschek, Simon Woodhead, Jose Miguel Hernandez-Lobato, Simon Peyton Jones, Richard G. Baraniuk, Cheng Zhang
Online education platforms enable teachers to share a large number of educational resources such as questions to form exercises and quizzes for students.
1 code implementation • 2 Mar 2020 • Hengyi Cai, Hongshen Chen, Cheng Zhang, Yonghao Song, Xiaofang Zhao, Yangxi Li, Dongsheng Duan, Dawei Yin
Current state-of-the-art neural dialogue systems are mainly data-driven and are trained on human-generated responses.
no code implementations • 18 Feb 2020 • Cheng Zhang, Qiuchi Li, Lingyu Hua, Dawei Song
To tackle the problem, in this paper, we identify and analyze the internal and external factors that affect the memory ability of RNNs, and propose a Semantic Euclidean Space to represent the semantics expressed by a sequence.
1 code implementation • IJCNLP 2019 • Hengyi Cai, Hongshen Chen, Cheng Zhang, Yonghao Song, Xiaofang Zhao, Dawei Yin
For each conversation, the model generates parameters of the encoder-decoder by referring to the input context.
1 code implementation • NeurIPS 2019 • Wenbo Gong, Sebastian Tschiatschek, Sebastian Nowozin, Richard E. Turner, José Miguel Hernández-Lobato, Cheng Zhang
In this paper, we address the ice-start problem, i. e., the challenge of deploying machine learning models when only a little or no training data is initially available, and acquiring each feature element of data is associated with costs.
1 code implementation • NeurIPS 2019 • Maximilian Igl, Kamil Ciosek, Yingzhen Li, Sebastian Tschiatschek, Cheng Zhang, Sam Devlin, Katja Hofmann
We discuss those differences and propose modifications to existing regularization techniques in order to better adapt them to RL.
no code implementations • pproximateinference AABI Symposium 2019 • Chao Ma, Sebastian Tschiatschek, Yingzhen Li, Richard Turner, Jose Miguel Hernandez-Lobato, Cheng Zhang
In this paper, we focused on improving VAEs for real-valued data that has heterogeneous marginal distributions.
no code implementations • 30 Sep 2019 • Robert Bamler, Cheng Zhang, Manfred Opper, Stephan Mandt
In this paper, we revisit perturbation theory as a powerful way of improving the variational approximation.
no code implementations • pproximateinference AABI Symposium 2019 • Ruqi Zhang, Yingzhen Li, Chris De Sa, Sam Devlin, Cheng Zhang
Variational inference (VI) plays an essential role in approximate Bayesian inference due to its computational efficiency and general applicability.
no code implementations • 17 Aug 2019 • Jingwen Wang, Hao Zhang, Cheng Zhang, Wenjing Yang, Liqun Shao, Jie Wang
To overcome this obstacle, we present NDORGS (Numerous Documents' Overview Report Generation Scheme) that integrates text filtering, keyword scoring, single-document summarization (SDS), topic modeling, MDS, and title generation to generate a coherent, well-structured ORPT.
1 code implementation • 13 Aug 2019 • Wenbo Gong, Sebastian Tschiatschek, Richard Turner, Sebastian Nowozin, José Miguel Hernández-Lobato, Cheng Zhang
In this paper we introduce the ice-start problem, i. e., the challenge of deploying machine learning models when only little or no training data is initially available, and acquiring each feature element of data is associated with costs.
no code implementations • 28 Jul 2019 • Cheng Zhang, Wei-Lun Chao, Dong Xuan
Specifically, we investigate the use of scene graphs derived from images for Visual QA: an image is abstractly represented by a graph with nodes corresponding to object entities and edges to object relationships.
1 code implementation • NeurIPS 2019 • Ruibo Tu, Kun Zhang, Bo Christer Bertilson, Hedvig Kjellström, Cheng Zhang
We show that the data generated from our simulator have similar statistics as real-world data.
2 code implementations • 7 May 2019 • Hiske Overweg, Anna-Lena Popkes, Ari Ercole, Yingzhen Li, José Miguel Hernández-Lobato, Yordan Zaykov, Cheng Zhang
However, flexible tools such as artificial neural networks (ANNs) suffer from a lack of interpretability limiting their acceptability to clinicians.
no code implementations • ICLR 2019 • Cheng Zhang, Frederick A. Matsen IV
Bayesian phylogenetic inference is currently done via Markov chain Monte Carlo with simple mechanisms for proposing new states, which hinders exploration efficiency and often requires long runs to deliver accurate posterior estimates.
3 code implementations • 3 Jan 2019 • Marcus Klasson, Cheng Zhang, Hedvig Kjellström
In this paper, we provide a new benchmark dataset for a challenging task in this application - classification of fruits, vegetables, and refrigerated products, e. g. milk packages and juice cartons, in grocery stores.
no code implementations • CONLL 2018 • Tianfan Fu, Cheng Zhang, M, Stephan t
In this paper, we present an efficient method for including new words from a specialized corpus, containing new words, into pre-trained generic word embeddings.
1 code implementation • ICLR 2019 • Chao Ma, Sebastian Tschiatschek, Konstantina Palla, José Miguel Hernández-Lobato, Sebastian Nowozin, Cheng Zhang
Many real-life decision-making situations allow further relevant information to be acquired at a specific cost, for example, in assessing the health status of a patient we may decide to take additional measurements such as diagnostic tests or imaging scans before making a final assessment.
no code implementations • 8 Sep 2018 • Charles Hamesse, Ruibo Tu, Paul Ackermann, Hedvig Kjellström, Cheng Zhang
However, it is challenging to train an automatic method for predicting the ATR rehabilitation outcome from treatment data, due to a massive amount of missing entries in the data recorded from ATR patients, as well as complex nonlinear relations between measurements and outcomes.
no code implementations • 3 Sep 2018 • Cheng Zhang
Based on the theory of integrable boundary conditions (BCs) developed by Sklyanin, we provide a direct method for computing soliton solutions of the focusing nonlinear Schr\"odinger (NLS) equation on the half-line.
Exactly Solvable and Integrable Systems High Energy Physics - Theory Mathematical Physics Mathematical Physics
2 code implementations • 11 Aug 2018 • Biao Leng, Cheng Zhang, Xiaocheng Zhou, Cheng Xu, Kai Xu
In this network, a Score Generation Unit is devised to evaluate the quality of each projected image with score vectors.
1 code implementation • 11 Jul 2018 • Ruibo Tu, Kun Zhang, Paul Ackermann, Bo Christer Bertilson, Clark Glymour, Hedvig Kjellström, Cheng Zhang
When these data entries are not missing completely at random, the (conditional) independence relations in the observed data may be different from those in the complete data generated by the underlying causal process.
1 code implementation • 28 May 2018 • Cheng Zhang, Vu Dinh, Frederick A. Matsen IV
Phylogenetic tree inference using deep DNA sequencing is reshaping our understanding of rapidly evolving systems, such as the within-host battle between viruses and the immune system.
1 code implementation • NeurIPS 2018 • Cheng Zhang, Frederick A. Matsen IV
Probability estimation is one of the fundamental tasks in statistics and machine learning.
Applications
1 code implementation • 8 Apr 2018 • Cheng Zhang, Cengiz Öztireli, Stephan Mandt, Giampiero Salvi
We first show that the phenomenon of variance reduction by diversified sampling generalizes in particular to non-stationary point processes.
no code implementations • 29 Nov 2017 • Marcus Klasson, Kun Zhang, Bo C. Bertilson, Cheng Zhang, Hedvig Kjellström
In this work, we explore the possibility of utilizing causal relationships to refine diagnostic prediction.
no code implementations • 15 Nov 2017 • Cheng Zhang, Judith Butepage, Hedvig Kjellstrom, Stephan Mandt
Many modern unsupervised or semi-supervised machine learning algorithms rely on Bayesian probabilistic models.
no code implementations • NeurIPS 2017 • Robert Bamler, Cheng Zhang, Manfred Opper, Stephan Mandt
Black box variational inference (BBVI) with reparameterization gradients triggered the exploration of divergence measures other than the Kullback-Leibler (KL) divergence, such as alpha divergences.
no code implementations • 28 Jul 2017 • Chang Xiao, Cheng Zhang, Changxi Zheng
We then introduce an algorithm that embeds a user-provided message in the text document and produces an encoded document whose appearance is minimally perturbed from the original document.
no code implementations • 1 May 2017 • Cheng Zhang, Hedvig Kjellstrom, Stephan Mandt
The DPP relies on a similarity measure between data points and gives low probabilities to mini-batches which contain redundant data, and higher probabilities to mini-batches with more diverse data.
3 code implementations • ICML 2017 • Vu Dinh, Arman Bilge, Cheng Zhang, Frederick A. Matsen IV
Hamiltonian Monte Carlo (HMC) is an efficient and effective means of sampling posterior distributions on Euclidean space, which has been extended to manifolds with boundary.
no code implementations • 7 Dec 2016 • An Qu, Cheng Zhang, Paul Ackermann, Hedvig Kjellström
Imputing incomplete medical tests and predicting patient outcomes are crucial for guiding the decision making for therapy, such as after an Achilles Tendon Rupture (ATR).
no code implementations • 5 Dec 2016 • Cheng Zhang, Hedvig Kjellstrom, Bo C. Bertilson
In this paper, we explore the possibility to apply machine learning to make diagnostic predictions using discomfort drawings.
no code implementations • 14 Aug 2016 • Kerry Zhang, Jussi Karlgren, Cheng Zhang, Jens Lagergren
There are multiple sides to every story, and while statistical topic models have been highly successful at topically summarizing the stories in corpora of text documents, they do not explicitly address the issue of learning the different sides, the viewpoints, expressed in the documents.
no code implementations • 27 Jul 2016 • Cheng Zhang, Hedvig Kjellstrom, Carl Henrik Ek, Bo C. Bertilson
The positive result indicates a significant potential of machine learning to be used for parts of the pain diagnostic process and to be a decision support system for physicians and other health care personnel.
no code implementations • 19 May 2016 • Cheng Zhang, Hedvig Kjellstrom, Carl Henrik Ek
The structured representation leads to a model that marries benefits traditionally associated with a discriminative approach, such as feature selection, with those of a generative model, such as principled regularization and ability to handle missing data.
no code implementations • 6 Feb 2016 • Cheng Zhang, Babak Shahbaba, Hongkai Zhao
Traditionally, the field of computational Bayesian statistics has been divided into two main subfields: variational methods and Markov chain Monte Carlo (MCMC).
1 code implementation • 18 Jun 2015 • Cheng Zhang, Babak Shahbaba, Hongkai Zhao
To this end, we build a surrogate function to approximate the target distribution using properly chosen random bases and an efficient optimization process.
no code implementations • 15 Jan 2013 • Cheng Zhang, Carl Henrik Ek, Andreas Damianou, Hedvig Kjellstrom
In this paper we present a modification to a latent topic model, which makes the model exploit supervision to produce a factorized representation of the observed data.