Haibo Ding

How Can We Know When Language Models Know? On the Calibration of Language Models for Question Answering

2020 · arXiv (Cornell University)

Recent works have shown that language models (LM) capture different types of knowledge regarding facts or common sense. However, because no model is perfect, they still fail to provide appropriate answers in many cases. In …

CSPLADE: Learned Sparse Retrieval with Causal Language Models

2025 · arXiv (Cornell University)

In recent years, dense retrieval has been the focus of information retrieval (IR) research. While effective, dense retrieval produces uninterpretable dense vectors, and suffers from the drawback of large index size. Learned sparse retrieval (LSR) …