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Chaofan Li

8 accepted papers

2026

OmniGen2: Towards Instruction-Aligned Multimodal Generation

CVPR 2026

Multimodal generative models can process instructions in various modalities and demonstrate outstanding performance across a wide range of image generation tasks. However, their robustness in complex real-world scenarios remains limited due to insufficient generalized instruction alignment. We intro

Cited by 0SourcecodeScholar
2026

Retro*: Optimizing LLMs for Reasoning-Intensive Document Retrieval

ICLR 2026poster

With the growing popularity of LLM agents and RAG, it has become increasingly important to retrieve documents that are essential for solving a task, even when their connection to the task is indirect or implicit. Addressing this problem requires fine-grained reasoning to accurately assess the releva…

Cited by 0SourceScholar
2025

AIR-Bench: Automated Heterogeneous Information Retrieval Benchmark

ACL 2025long

Evaluation plays a crucial role in the advancement of information retrieval (IR) models. However, current benchmarks, which are based on predefined domains and human-labeled data, face limitations in addressing evaluation needs for emerging domains both cost-effectively and efficiently. To address t…

2025

Making Text Embedders Few-Shot Learners

ICLR 2025poster

Large language models (LLMs) with decoder-only architectures have demonstrated exceptional text-generation capabilities across a variety of tasks. Some researchers have also adapted these models for text representation tasks. However, in text representation tasks, these models often face performance…

2025

OmniGen: Unified Image Generation

CVPR 2025poster

The emergence of Large Language Models (LLMs) has unified language generation tasks and revolutionized human-machine interaction. However, in the realm of image generation, a unified model capable of handling various tasks within a single framework remains largely unexplored. In this work, we introd…

2025

Reinforced IR: A Self-Boosting Framework For Domain-Adapted Information Retrieval

ACL 2025long

While retrieval techniques are widely used in practice, they still face significant challenges in cross-domain scenarios. Recently, generation-augmented methods have emerged as a promising solution to this problem. These methods enhance raw queries by incorporating additional information from an LLM…

Cited by 0SourcePDFScholar
2025

Towards A Generalist Code Embedding Model Based On Massive Data Synthesis

NeurIPS 2025poster

Code embedding models attract increasing attention due to the widespread popularity of retrieval-augmented generation (RAG) in software development. These models are expected to capture the rich semantic relationships inherent to code, which differ significantly from those found in text. However, ex…

Cited by 0SourcecodeScholar
2024

Llama2Vec: Unsupervised Adaptation of Large Language Models for Dense Retrieval

ACL 2024long

Dense retrieval calls for discriminative embeddings to represent the semantic relationship between query and document. It may benefit from the using of large language models (LLMs), given LLMs’ strong capability on semantic understanding. However, the LLMs are learned by auto-regression, whose worki…