Discriminative Information Retrieval for Question Answering Sentence Selection
Tongfei Chen, Benjamin Van Durme · 2017
We propose a framework for discriminative IR atop linguistic features, trained to improve the recall of answer candidate passage retrieval, the initial step in text-based question answering.We formalize this as an instance of linear feature-based IR, demonstrating a 34% -43% improvement in recall for candidate triage for QA.