Search Results for author: Xiyue Zhang

Found 10 papers, 7 papers with code

When to Trust AI: Advances and Challenges for Certification of Neural Networks

no code implementations20 Sep 2023 Marta Kwiatkowska, Xiyue Zhang

Artificial intelligence (AI) has been advancing at a fast pace and it is now poised for deployment in a wide range of applications, such as autonomous systems, medical diagnosis and natural language processing.

Medical Diagnosis

Weighted Automata Extraction and Explanation of Recurrent Neural Networks for Natural Language Tasks

1 code implementation24 Jun 2023 Zeming Wei, Xiyue Zhang, Yihao Zhang, Meng Sun

In this paper, we propose a novel framework of Weighted Finite Automata (WFA) extraction and explanation to tackle the limitations for natural language tasks.

Data Augmentation Model extraction

Provable Preimage Under-Approximation for Neural Networks (Full Version)

1 code implementation5 May 2023 Xiyue Zhang, Benjie Wang, Marta Kwiatkowska

Neural network verification mainly focuses on local robustness properties, which can be checked by bounding the image (set of outputs) of a given input set.

Using Z3 for Formal Modeling and Verification of FNN Global Robustness

1 code implementation20 Apr 2023 Yihao Zhang, Zeming Wei, Xiyue Zhang, Meng Sun

To evaluate the effectiveness of our implementation and improvements, we conduct extensive experiments on a set of benchmark datasets.

Adversarial Robustness

Extracting Weighted Finite Automata from Recurrent Neural Networks for Natural Languages

1 code implementation27 Jun 2022 Zeming Wei, Xiyue Zhang, Meng Sun

Compositional approaches that are scablable to natural languages fall short in extraction precision.

Data Augmentation

Spatial-Temporal Sequential Hypergraph Network for Crime Prediction with Dynamic Multiplex Relation Learning

1 code implementation IJCAI 2021 Lianghao Xia, Chao Huang, Yong Xu, Peng Dai, Liefeng Bo, Xiyue Zhang, Tianyi Chen

Crime prediction is crucial for public safety and resource optimization, yet is very challenging due to two aspects: i) the dynamics of criminal patterns across time and space, crime events are distributed unevenly on both spatial and temporal domains; ii) time-evolving dependencies between different types of crimes (e. g., Theft, Robbery, Assault, Damage) which reveal fine-grained semantics of crimes.

Crime Prediction Relation

Knowledge-Enhanced Hierarchical Graph Transformer Network for Multi-Behavior Recommendation

1 code implementation8 Oct 2021 Lianghao Xia, Chao Huang, Yong Xu, Peng Dai, Xiyue Zhang, Hongsheng Yang, Jian Pei, Liefeng Bo

In particular: i) complex inter-dependencies across different types of user behaviors; ii) the incorporation of knowledge-aware item relations into the multi-behavior recommendation framework; iii) dynamic characteristics of multi-typed user-item interactions.

Graph Attention Recommendation Systems

Traffic Flow Forecasting with Spatial-Temporal Graph Diffusion Network

1 code implementation8 Oct 2021 Xiyue Zhang, Chao Huang, Yong Xu, Lianghao Xia, Peng Dai, Liefeng Bo, Junbo Zhang, Yu Zheng

Accurate forecasting of citywide traffic flow has been playing critical role in a variety of spatial-temporal mining applications, such as intelligent traffic control and public risk assessment.

Traffic Prediction

Global Robustness Verification Networks

no code implementations8 Jun 2020 Weidi Sun, Yuteng Lu, Xiyue Zhang, Zhanxing Zhu, Meng Sun

The wide deployment of deep neural networks, though achieving great success in many domains, has severe safety and reliability concerns.

Adversarial Attack

Towards Characterizing Adversarial Defects of Deep Learning Software from the Lens of Uncertainty

no code implementations24 Apr 2020 Xiyue Zhang, Xiaofei Xie, Lei Ma, Xiaoning Du, Qiang Hu, Yang Liu, Jianjun Zhao, Meng Sun

Based on this, we propose an automated testing technique to generate multiple types of uncommon AEs and BEs that are largely missed by existing techniques.

Adversarial Attack

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