Search Results for author: Tiehua Zhang

Found 18 papers, 3 papers with code

GRL-Prompt: Towards Knowledge Graph based Prompt Optimization via Reinforcement Learning

no code implementations19 Nov 2024 Yuze Liu, Tingjie Liu, Tiehua Zhang, Youhua Xia, Jinze Wang, Zhishu Shen, Jiong Jin, Fei Richard Yu

Large language models (LLMs) have demonstrated impressive success in a wide range of natural language processing (NLP) tasks due to their extensive general knowledge of the world.

General Knowledge Prompt Engineering +1

UnSeg: One Universal Unlearnable Example Generator is Enough against All Image Segmentation

no code implementations13 Oct 2024 Ye Sun, Hao Zhang, Tiehua Zhang, Xingjun Ma, Yu-Gang Jiang

In this work, we exploit the concept of unlearnable examples to make images unusable to model training by generating and adding unlearnable noise into the original images.

Bilevel Optimization Image Segmentation +3

CHASE: A Causal Heterogeneous Graph based Framework for Root Cause Analysis in Multimodal Microservice Systems

no code implementations28 Jun 2024 Ziming Zhao, Tiehua Zhang, Zhishu Shen, Hai Dong, Xingjun Ma, Xianhui Liu, Yun Yang

In recent years, the widespread adoption of distributed microservice architectures within the industry has significantly increased the demand for enhanced system availability and robustness.

Anomaly Detection

Towards Secure and Efficient Data Scheduling for Vehicular Social Networks

no code implementations28 Jun 2024 Youhua Xia, Tiehua Zhang, Jiong Jin, Ying He, Fei Yu

Efficient data transmission scheduling within vehicular environments poses a significant challenge due to the high mobility of such networks.

Q-Learning Scheduling

GASE: Graph Attention Sampling with Edges Fusion for Solving Vehicle Routing Problems

no code implementations21 May 2024 Zhenwei Wang, Ruibin Bai, Fazlullah Khan, Ender Ozcan, Tiehua Zhang

Existing research studies have been focusing on novel encoding and decoding structures via various neural network models to enhance the node embedding representation.

Deep Reinforcement Learning Graph Attention

Towards Multi-agent Reinforcement Learning based Traffic Signal Control through Spatio-temporal Hypergraphs

no code implementations17 Apr 2024 Kang Wang, Zhishu Shen, Zhen Lei, Tiehua Zhang

Traffic signal control systems (TSCSs) are integral to intelligent traffic management, fostering efficient vehicle flow.

Edge-computing Management +2

Learning from Heterogeneity: A Dynamic Learning Framework for Hypergraphs

1 code implementation7 Jul 2023 Tiehua Zhang, Yuze Liu, Zhishu Shen, Xingjun Ma, Peng Qi, Zhijun Ding, Jiong Jin

Graph neural network (GNN) has gained increasing popularity in recent years owing to its capability and flexibility in modeling complex graph structure data.

Graph Learning Graph Neural Network +2

DCMT: A Direct Entire-Space Causal Multi-Task Framework for Post-Click Conversion Estimation

no code implementations13 Feb 2023 Feng Zhu, Mingjie Zhong, Xinxing Yang, Longfei Li, Lu Yu, Tiehua Zhang, Jun Zhou, Chaochao Chen, Fei Wu, Guanfeng Liu, Yan Wang

In recommendation scenarios, there are two long-standing challenges, i. e., selection bias and data sparsity, which lead to a significant drop in prediction accuracy for both Click-Through Rate (CTR) and post-click Conversion Rate (CVR) tasks.

counterfactual Multi-Task Learning +1

Towards Relation-centered Pooling and Convolution for Heterogeneous Graph Learning Networks

1 code implementation31 Oct 2022 Tiehua Zhang, Yuze Liu, Yao Yao, Youhua Xia, Xin Chen, Xiaowei Huang, Jiong Jin

Heterogeneous graph neural network has unleashed great potential on graph representation learning and shown superior performance on downstream tasks such as node classification and clustering.

Graph Learning Graph Neural Network +3

An Adaptive Federated Relevance Framework for Spatial Temporal Graph Learning

no code implementations7 Jun 2022 Tiehua Zhang, Yuze Liu, Zhishu Shen, Rui Xu, Xin Chen, Xiaowei Huang, Xi Zheng

Spatial-temporal data contains rich information and has been widely studied in recent years due to the rapid development of relevant applications in many fields.

Federated Learning Graph Learning

AstBERT: Enabling Language Model for Financial Code Understanding with Abstract Syntax Trees

no code implementations20 Jan 2022 Rong Liang, Tiehua Zhang, Yujie Lu, Yuze Liu, Zhen Huang, Xin Chen

Specifically, we collect a sheer number of source codes (both Java and Python) from the Alipay code repository and incorporate both syntactic and semantic code knowledge into our model through the help of code parsers, in which AST information of the source codes can be interpreted and integrated.

Clone Detection Code Search +2

GPS: A Policy-driven Sampling Approach for Graph Representation Learning

no code implementations29 Dec 2021 Tiehua Zhang, Yuze Liu, Xin Chen, Xiaowei Huang, Feng Zhu, Xi Zheng

Graph representation learning has drawn increasing attention in recent years, especially for learning the low dimensional embedding at both node and graph level for classification and recommendations tasks.

Graph Classification Graph Representation Learning

STFL: A Temporal-Spatial Federated Learning Framework for Graph Neural Networks

1 code implementation12 Nov 2021 Guannan Lou, Yuze Liu, Tiehua Zhang, Xi Zheng

We present a spatial-temporal federated learning framework for graph neural networks, namely STFL.

Federated Learning

Deep Learning-Based Autonomous Driving Systems: A Survey of Attacks and Defenses

no code implementations5 Apr 2021 Yao Deng, Tiehua Zhang, Guannan Lou, Xi Zheng, Jiong Jin, Qing-Long Han

The rapid development of artificial intelligence, especially deep learning technology, has advanced autonomous driving systems (ADSs) by providing precise control decisions to counterpart almost any driving event, spanning from anti-fatigue safe driving to intelligent route planning.

Anomaly Detection Autonomous Driving +1

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