Lei Sang

4 papers · 2025–2026 · 3 venues · across top CS/AI venues

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Achievements

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🌍 Conference Polyglot · Bronze 🌉 Interdisciplinary Bridge · Bronze

Venues

AAAI (2) ACL (1) EMNLP (1)

Top co-authors

Yiwen Zhang (4) Li Ni (2) Peiquan Jin (2) Lin Mu (2) Kaibin Wang (2) Zhize Wu (2) Jun Shen (1) Yi Zhang (1) Yu Zhang (1) Xinzhe Jiang (1)

Research topics

Artificial Intelligence (2) Deep Learning (2) Machine Learning (2) Core Methods (2) Natural Language Processing (1) Architectures (1) Core AI (1) Learning Paradigms (1) Learning Types · Machine Learning (1) Learning Types · Deep Learning (1) Understanding (1)

Keywords

representation learning (2) contrastive learning (1) matrix factorization (1) collaborative filtering (1) in-context learning (1) hierarchical representation (1) user-item embedding (1) parameter-efficient fine-tuning (1) low-rank adaptation (1) mixture of expert (1) prompt injection (1) user-item interaction (1) causal relationship (1) event causality identification (1) semantic abstraction (1) data sparsity (1) large language model (1) graph neural network (1) positive sampling (1) expert communication (1)

Papers

CAFU: Constrained Alignment and Filtered Uniformity for Denoising Recommendation AAAI 2026 Revisiting Contrastive Learning in Collaborative Filtering via Parallel Graph Filters AAAI 2026 TalkLoRA: Communication-Aware Mixture of Low-Rank Adaptation for Large Language Models ACL 2026 DICP: Deep In-Context Prompt for Event Causality Identification EMNLP 2025