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Sen Zhao

11 accepted papers

2026

Topology of Reasoning: Retrieved Cell Complex-Augmented Generation for Textual Graph Question Answering

ICLR 2026poster

Retrieval-Augmented Generation (RAG) enhances the reasoning ability of Large Language Models (LLMs) by dynamically integrating external knowledge, thereby mitigating hallucinations and strengthening contextual grounding for structured data such as graphs. Nevertheless, most existing RAG variants for…

Cited by 0SourceScholar
2025

CLeVeR: Multi-modal Contrastive Learning for Vulnerability Code Representation

ACL 2025finding

Automated vulnerability detection has become increasingly important. Many existing methods utilize deep learning models to obtain code representations for vulnerability detection. However, these approaches predominantly capture the overall semantics of the code rather than its intrinsic vulnerabilit…

2025

GBGC: Efficient and Adaptive Graph Coarsening via Granular-ball Computing

IJCAI 2025

The objective of graph coarsening is to generate smaller, more manageable graphs while preserving key information of the original graph. Previous work were mainly based on the perspective of spectrum-preserving, using some predefined coarsening rules to make the eigenvalues of the Laplacian matrix o

2025

GRICP: Granular-Ball Iterative Closest Point with Multikernel Correntropy for Point Cloud Fine Registration

AAAI 2025technical

The Iterative Closest Point (ICP) algorithm suffers from sensitivity to outliers and tendency to local optima in point cloud fine registration. In this paper, we introduce a global and robust ICP framework called Granular-Ball Iterative Closest Point with MultiKernel Correntropy (GRICP). This approa…

2025

Graph Coarsening via Supervised Granular-Ball for Scalable Graph Neural Network Training

AAAI 2025technical

Graph Neural Networks (GNNs) have demonstrated significant achievements in processing graph data, yet scalability remains a substantial challenge. To address this, numerous graph coarsening methods have been developed. However, most existing coarsening methods are training-dependent, leading to lowe…

2025

Multi-Granularity Open Intent Classification via Adaptive Granular-Ball Decision Boundary

AAAI 2025technical

Open intent classification is critical for the development of dialogue systems, aiming to accurately classify known intents into their corresponding classes while identifying unknown intents. Prior boundary-based methods assumed known intents fit within compact spherical regions, focusing on coarse-…

2023

Towards Hierarchical Policy Learning for Conversational Recommendation with Hypergraph-based Reinforcement Learning

IJCAI 2023poster

Conversational recommendation systems (CRS) aim to timely and proactively acquire user dynamic preferred attributes through conversations for item recommendation. In each turn of CRS, there naturally have two decision-making processes with different roles that influence each other: 1) director, whic…

2022

Multi-View Intent Disentangle Graph Networks for Bundle Recommendation

AAAI 2022technical

Bundle recommendation aims to recommend the user a bundle of items as a whole. Previous models capture user’s preferences on both items and the association of items. Nevertheless, they usually neglect the diversity of user’s intents on adopting items and fail to disentangle user’s intents in represe…

2020

Multidimensional Shape Constraints

ICML 2020poster

We propose new multi-input shape constraints across four intuitive categories: complements, diminishers, dominance, and unimodality constraints. We show these shape constraints can be checked and even enforced when training machine-learned models for linear models, generalized additive models, and t…

Cited by 26SourcePDFScholar