QA4PRF: A Question Answering based Framework for Pseudo Relevance Feedback

no code implementations • 16 Nov 2021 • Handong Ma, Jiawei Hou, Chenxu Zhu, Weinan Zhang, Ruiming Tang, Jincai Lai, Jieming Zhu, Xiuqiang He, Yong Yu

Pseudo relevance feedback (PRF) automatically performs query expansion based on top-retrieved documents to better represent the user's information need so as to improve the search results.

Question Answering Semantic Similarity +1

Deep Unsupervised Active Learning on Learnable Graphs

no code implementations • 8 Nov 2021 • Handong Ma, Changsheng Li, Xinchu Shi, Ye Yuan, Guoren Wang

To make the learnt graph structure more stable and effective, we take into account $k$-nearest neighbor graph as a priori, and learn a relation propagation graph structure.

Active Learning Graph structure learning +2

On Deep Unsupervised Active Learning

no code implementations • 28 Jul 2020 • Changsheng Li, Handong Ma, Zhao Kang, Ye Yuan, Xiao-Yu Zhang, Guoren Wang

Unsupervised active learning has attracted increasing attention in recent years, where its goal is to select representative samples in an unsupervised setting for human annotating.

Active Learning