Lei Yi

2 papers · 2025–2025 · 2 venues · across top CS/AI venues

Authors are matched by name, so researchers who share a name ("Yang Liu", "Wei Wang") appear as a single profile and their paper counts, venues and achievements are combined. How identity is handled.

Achievements

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🌍 Conference Polyglot · Bronze 🌉 Interdisciplinary Bridge · Bronze 🗺️ Taxonomy Completionist (10)

Venues

AAAI (1) ACL (1)

Top co-authors

Yeyuan Wang (2) Dehong Gao (2) Xiaoyan Cai (2) Linbo Jin (2) Libin Yang (2) Jinxia Zhang (1) Rujiao Long (1)

Research topics

Artificial Intelligence (2) Deep Learning (2) Machine Learning (2) Core AI · Artificial Intelligence (2) Learning Types · Machine Learning (2) Learning Types · Deep Learning (2) Computer Vision (1) Core AI · Computer Vision (1) Core Methods (1) Optimization & Theory (1)

Keywords

multimodal learning (2) contrastive learning (1) direct preference optimization (1) model alignment (1) vision-language pre-training (1) fine-grained understanding (1) multimodal reasoning (1) negative sampling (1) large language model (1) visual dictionary (1) representation learning (1) sentence-level optimization (1)

Papers

ASPO: Adaptive Sentence-Level Preference Optimization for Fine-Grained Multimodal Reasoning ACL 2025 Enhancing Fine-Grained Vision-Language Pretraining with Negative Augmented Samples AAAI 2025