Search Results for author: Xingyi Zhang

Found 24 papers, 14 papers with code

Balancing property optimization and constraint satisfaction for constrained multi-property molecular optimization

1 code implementation19 Nov 2024 Xin Xia, YaJie Zhang, Xiangxiang Zeng, Xingyi Zhang, ChunHou Zheng, Yansen Su

Molecular optimization, which aims to discover improved molecules from a vast chemical search space, is a critical step in chemical development.

Diffusion-Inspired Cold Start with Sufficient Prior in Computerized Adaptive Testing

1 code implementation19 Nov 2024 Haiping Ma, Aoqing Xia, Changqian Wang, Hai Wang, Xingyi Zhang

Redundant and extraneous cognitive states can lead to limited transfer and negative transfer effects.

Question Selection

DisenGCD: A Meta Multigraph-assisted Disentangled Graph Learning Framework for Cognitive Diagnosis

1 code implementation23 Oct 2024 Shangshang Yang, Mingyang Chen, Ziwen Wang, Xiaoshan Yu, Panpan Zhang, Haiping Ma, Xingyi Zhang

To tackle the issues, this paper suggests a meta multigraph-assisted disentangled graph learning framework for CD (DisenGCD), which learns three types of representations on three disentangled graphs: student-exercise-concept interaction, exercise-concept relation, and concept dependency graphs, respectively.

cognitive diagnosis Graph Attention +1

DISCO: A Hierarchical Disentangled Cognitive Diagnosis Framework for Interpretable Job Recommendation

1 code implementation10 Oct 2024 Xiaoshan Yu, Chuan Qin, Qi Zhang, Chen Zhu, Haiping Ma, Xingyi Zhang, HengShu Zhu

To this end, in this paper, we propose DISCO, a hierarchical Disentanglement based Cognitive diagnosis framework, aimed at flexibly accommodating the underlying representation learning model for effective and interpretable job recommendations.

cognitive diagnosis Contrastive Learning +3

Reconstruction of Particle Flow Energy Distribution Using Deep Learning Algorithms

1 code implementation8 Oct 2024 Han Zhang, Shengxiang Lin, Xingyi Zhang, Yu Wang, Yangguang Zhang

In high-energy particle physics, extracting information from complex detector signals is crucial for energy reconstruction.

Deep Learning Image Reconstruction

Dual-stream Feature Augmentation for Domain Generalization

1 code implementation7 Sep 2024 Shanshan Wang, ALuSi, Xun Yang, Ke Xu, Huibin Tan, Xingyi Zhang

On the other hand, the causality in discriminative features is not involved in these methods, which harms the generalization ability of model due to the spurious correlations.

Contrastive Learning Domain Generalization

RIGL: A Unified Reciprocal Approach for Tracing the Independent and Group Learning Processes

1 code implementation18 Jun 2024 Xiaoshan Yu, Chuan Qin, Dazhong Shen, Shangshang Yang, Haiping Ma, HengShu Zhu, Xingyi Zhang

To this end, in this paper, we propose RIGL, a unified Reciprocal model to trace knowledge states at both the individual and group levels, drawing from the Independent and Group Learning processes.

Contrastive Learning

Towards Deeper Understanding of PPR-based Embedding Approaches: A Topological Perspective

1 code implementation30 May 2024 Xingyi Zhang, Zixuan Weng, Sibo Wang

In this work, we first show that state-of-the-art embedding approaches that factorize a PPR-related matrix can be unified into a closed-form framework.

SmoothGNN: Smoothing-aware GNN for Unsupervised Node Anomaly Detection

no code implementations27 May 2024 Xiangyu Dong, Xingyi Zhang, Yanni Sun, Lei Chen, Mingxuan Yuan, Sibo Wang

We introduce Individual Smoothing Patterns (ISP) and Neighborhood Smoothing Patterns (NSP), which indicate that the representations of anomalous nodes are harder to smooth than those of normal ones.

Anomaly Detection Graph Learning +1

Dual-State Personalized Knowledge Tracing with Emotional Incorporation

no code implementations27 May 2024 Shanshan Wang, Fangzheng Yuan, Keyang Wang, Xun Yang, Xingyi Zhang, Meng Wang

To alleviate this limitation, we explicitly models the personalized learning process by incorporating the emotions, a representative personalized behavior in the learning process, into KT framework.

Knowledge Tracing Transfer Learning

KPG: Key Propagation Graph Generator for Rumor Detection based on Reinforcement Learning

no code implementations21 May 2024 Yusong Zhang, Kun Xie, Xingyi Zhang, Xiangyu Dong, Sibo Wang

In this paper, we propose Key Propagation Graph Generator (KPG), a novel reinforcement learning-based rumor detection framework that generates contextually coherent and informative propagation patterns for events with insufficient topology information, while also identifies indicative substructures for events with redundant and noisy propagation structures.

Data Augmentation Graph Neural Network

Personalized Forgetting Mechanism with Concept-Driven Knowledge Tracing

no code implementations18 Apr 2024 Shanshan Wang, Ying Hu, Xun Yang, Zhongzhou Zhang, Keyang Wang, Xingyi Zhang

To address these problems, we propose a Concept-driven Personalized Forgetting knowledge tracing model (CPF) which integrates hierarchical relationships between knowledge concepts and incorporates students' personalized cognitive abilities.

Knowledge Tracing

ReliCD: A Reliable Cognitive Diagnosis Framework with Confidence Awareness

no code implementations29 Dec 2023 Yunfei Zhang, Chuan Qin, Dazhong Shen, Haiping Ma, Le Zhang, Xingyi Zhang, HengShu Zhu

To address this, in this paper, we propose a novel Reliable Cognitive Diagnosis(ReliCD) framework, which can quantify the confidence of the diagnosis feedback and is flexible for different cognitive diagnostic functions.

cognitive diagnosis

Enhancing Cognitive Diagnosis using Un-interacted Exercises: A Collaboration-aware Mixed Sampling Approach

no code implementations15 Dec 2023 Haiping Ma, Changqian Wang, HengShu Zhu, Shangshang Yang, XiaoMing Zhang, Xingyi Zhang

Finally, we demonstrate the effectiveness and interpretability of our framework through comprehensive experiments on real-world datasets.

cognitive diagnosis

Rayleigh Quotient Graph Neural Networks for Graph-level Anomaly Detection

1 code implementation4 Oct 2023 Xiangyu Dong, Xingyi Zhang, Sibo Wang

Moreover, we prove that the accumulated spectral energy of the graph signal can be represented by its Rayleigh Quotient, indicating that the Rayleigh Quotient is a driving factor behind the anomalous properties of graphs.

Anomaly Detection Graph Neural Network

EQ-Net: Elastic Quantization Neural Networks

1 code implementation ICCV 2023 Ke Xu, Lei Han, Ye Tian, Shangshang Yang, Xingyi Zhang

In this paper, we explore a one-shot network quantization regime, named Elastic Quantization Neural Networks (EQ-Net), which aims to train a robust weight-sharing quantization supernet.

Quantization

Designing Novel Cognitive Diagnosis Models via Evolutionary Multi-Objective Neural Architecture Search

1 code implementation10 Jul 2023 Shangshang Yang, Haiping Ma, Cheng Zhen, Ye Tian, Limiao Zhang, Yaochu Jin, Xingyi Zhang

Then, we propose multi-objective genetic programming (MOGP) to explore the NAS task's search space by maximizing model performance and interpretability.

cognitive diagnosis Neural Architecture Search

Self-supervised Graph Learning for Long-tailed Cognitive Diagnosis

no code implementations15 Oct 2022 Shanshan Wang, Zhen Zeng, Xun Yang, Xingyi Zhang

Cognitive diagnosis is a fundamental yet critical research task in the field of intelligent education, which aims to discover the proficiency level of different students on specific knowledge concepts.

cognitive diagnosis Graph Learning

Accelerating Evolutionary Neural Architecture Search via Multi-Fidelity Evaluation

1 code implementation10 Aug 2021 Shangshang Yang, Ye Tian, Xiaoshu Xiang, Shichen Peng, Xingyi Zhang

Evolutionary neural architecture search (ENAS) has recently received increasing attention by effectively finding high-quality neural architectures, which however consumes high computational cost by training the architecture encoded by each individual for complete epochs in individual evaluation.

Neural Architecture Search

Learning Based Proximity Matrix Factorization for Node Embedding

1 code implementation10 Jun 2021 Xingyi Zhang, Kun Xie, Sibo Wang, Zengfeng Huang

Recent progress on node embedding shows that proximity matrix factorization methods gain superb performance and scale to large graphs with millions of nodes.

Link Prediction Node Classification

Principled Design of Translation, Scale, and Rotation Invariant Variation Operators for Metaheuristics

no code implementations22 May 2021 Ye Tian, Xingyi Zhang, Cheng He, Kay Chen Tan, Yaochu Jin

In the past three decades, a large number of metaheuristics have been proposed and shown high performance in solving complex optimization problems.

Translation

PlatEMO: A MATLAB Platform for Evolutionary Multi-Objective Optimization

no code implementations4 Jan 2017 Ye Tian, Ran Cheng, Xingyi Zhang, Yaochu Jin

To address these issues, we have developed a MATLAB platform for evolutionary multi-objective optimization in this paper, called PlatEMO, which includes more than 50 multi-objective evolutionary algorithms and more than 100 multi-objective test problems, along with several widely used performance indicators.

Evolutionary Algorithms Multiobjective Optimization

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