Search Results for author: Chenxu Wang

Found 22 papers, 11 papers with code

Towards Robust Deep Reinforcement Learning against Environmental State Perturbation

no code implementations10 Jun 2025 Chenxu Wang, Huaping Liu

Adversarial attacks and robustness in Deep Reinforcement Learning (DRL) have been widely studied in various threat models; however, few consider environmental state perturbations, which are natural in embodied scenarios.

Deep Reinforcement Learning reinforcement-learning

Trajectory Entropy Reinforcement Learning for Predictable and Robust Control

no code implementations7 May 2025 Bang You, Chenxu Wang, Huaping Liu

We show that the trajectory entropy can be effectively estimated by learning a variational parameterized action prediction model, and use the prediction model to construct an information-regularized reward function.

Deep Reinforcement Learning Inductive Bias +1

Multi-Modal Hypergraph Enhanced LLM Learning for Recommendation

no code implementations13 Apr 2025 Xu Guo, Tong Zhang, Yuanzhi Wang, Chenxu Wang, Fuyun Wang, Xudong Wang, Xiaoya Zhang, Xin Liu, Zhen Cui

To this end, we propose a novel framework, Hypergraph Enhanced LLM Learning for multimodal Recommendation (HeLLM), designed to equip LLMs with the capability to capture intricate higher-order semantic correlations by fusing graph-level contextual signals with sequence-level behavioral patterns.

Contrastive Learning Multimodal Recommendation

Thought-Path Contrastive Learning via Premise-Oriented Data Augmentation for Logical Reading Comprehension

1 code implementation22 Sep 2024 Chenxu Wang, Ping Jian, Zhen Yang

To facilitate the model's capabilities to better differentiate the reasoning process associated with each option, we introduce a novel thought-path contrastive learning method that compares reasoning paths between the original and counterfactual samples.

Contrastive Learning counterfactual +3

Multi-clue Consistency Learning to Bridge Gaps Between General and Oriented Object in Semi-supervised Detection

1 code implementation8 Jul 2024 Chenxu Wang, Chunyan Xu, Ziqi Gu, Zhen Cui

We experimentally find three gaps between general and oriented object detection in semi-supervised learning: 1) Sampling inconsistency: the common center sampling is not suitable for oriented objects with larger aspect ratios when selecting positive labels from labeled data.

object-detection Object Detection +2

Towards Objectively Benchmarking Social Intelligence for Language Agents at Action Level

1 code implementation8 Apr 2024 Chenxu Wang, Bin Dai, Huaping Liu, Baoyuan Wang

To gauge the significance of agent architecture, we implement a target-driven planning (TDP) module as an adjunct to the existing agent.

Benchmarking

Lower-Left Partial AUC: An Effective and Efficient Optimization Metric for Recommendation

no code implementations29 Feb 2024 Wentao Shi, Chenxu Wang, Fuli Feng, Yang Zhang, Wenjie Wang, Junkang Wu, Xiangnan He

Compared to AUC, LLPAUC considers only the partial area under the ROC curve in the Lower-Left corner to push the optimization focus on Top-K. We provide theoretical validation of the correlation between LLPAUC and Top-K ranking metrics and demonstrate its robustness to noisy user feedback.

Recommendation Systems

Prompt-based Logical Semantics Enhancement for Implicit Discourse Relation Recognition

1 code implementation1 Nov 2023 Chenxu Wang, Ping Jian, Mu Huang

Essentially, our method seamlessly injects knowledge relevant to discourse relation into pre-trained language models through prompt-based connective prediction.

Discourse Parsing Language Modelling +2

Deep Reinforcement Learning with Task-Adaptive Retrieval via Hypernetwork

1 code implementation19 Jun 2023 Yonggang Jin, Chenxu Wang, Tianyu Zheng, Liuyu Xiang, Yaodong Yang, Junge Zhang, Jie Fu, Zhaofeng He

Deep reinforcement learning algorithms are usually impeded by sampling inefficiency, heavily depending on multiple interactions with the environment to acquire accurate decision-making capabilities.

Decision Making Deep Reinforcement Learning +3

EnhancE:Enhanced Entity and Relation Embedding for Knowledge Hypergraph Link Prediction

no code implementations journal 2023 Chenxu Wang, Zhao Li, Xin Wang, and Zirui Chen

Knowledge Hypergraphs, as the generalization of knowledge graphs, have attracted increasingly widespread attention due to their friendly compatibility with real-world facts.

Knowledge Graphs Link Prediction +3

Prediction then Correction: An Abductive Prediction Correction Method for Sequential Recommendation

1 code implementation27 Apr 2023 Yulong Huang, Yang Zhang, Qifan Wang, Chenxu Wang, Fuli Feng

To improve the accuracy of these models, some researchers have attempted to simulate human analogical reasoning to correct predictions for testing data by drawing analogies with the prediction errors of similar training data.

Prediction Sequential Recommendation

HyConvE: A Novel Embedding Model for Knowledge Hypergraph Link Prediction with Convolutional Neural Networks

no code implementations journal 2023 Chenxu Wang, Xin Wang, Zhao Li, Zirui Chen, and Jianxin Li

Knowledge hypergraph embedding, which projects entities and n-ary relations into a low-dimensional continuous vector space to predict missing links, remains a challenging area to be explored despite the ubiquity of n-ary relational facts in the real world.

hypergraph embedding Knowledge Graphs +3

Rethinking Missing Data: Aleatoric Uncertainty-Aware Recommendation

1 code implementation22 Sep 2022 Chenxu Wang, Fuli Feng, Yang Zhang, Qifan Wang, Xunhan Hu, Xiangnan He

A standard choice is treating the missing data as negative training samples and estimating interaction likelihood between user-item pairs along with the observed interactions.

Optimal Energy Scheduling and Sensitivity Analysis for Integrated Power-Water-Heat Systems

no code implementations1 Feb 2021 Sidun Fang, Chenxu Wang, Yashen Lin, Changhong Zhao

The conventionally independent power, water, and heating networks are becoming more tightly connected, which motivates their joint optimal energy scheduling to improve the overall efficiency of an integrated energy system.

Scheduling

CLUE: Towards Discovering Locked Cryptocurrencies in Ethereum

no code implementations2 Dec 2020 Xiaoqi Li, Ting Chen, Xiapu Luo, Chenxu Wang

Because the locked cryptocurrencies can never be controlled by users, avoid interacting with the accounts discovered by CLUE and repeating the same mistakes again can help users to save money.

Cryptography and Security

Revisiting Factorizing Aggregated Posterior in Learning Disentangled Representations

no code implementations12 Sep 2020 Ze Cheng, Juncheng Li, Chenxu Wang, Jixuan Gu, Hao Xu, Xinjian Li, Florian Metze

In this paper, we provide a theoretical explanation that low total correlation of sampled representation cannot guarantee low total correlation of the mean representation.

How to Retrain Recommender System? A Sequential Meta-Learning Method

1 code implementation27 May 2020 Yang Zhang, Fuli Feng, Chenxu Wang, Xiangnan He, Meng Wang, Yan Li, Yongdong Zhang

Nevertheless, normal training on new data only may easily cause overfitting and forgetting issues, since the new data is of a smaller scale and contains fewer information on long-term user preference.

Meta-Learning Recommendation Systems

RTC-VAE: HARNESSING THE PECULIARITY OF TOTAL CORRELATION IN LEARNING DISENTANGLED REPRESENTATIONS

no code implementations25 Sep 2019 Ze Cheng, Juncheng B Li, Chenxu Wang, Jixuan Gu, Hao Xu, Xinjian Li, Florian Metze

In the problem of unsupervised learning of disentangled representations, one of the promising methods is to penalize the total correlation of sampled latent vari-ables.

Disentanglement

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