no code implementations • 5 Jul 2022 • Pan Du, Jian-Yun Nie, Yutao Zhu, Hao Jiang, Lixin Zou, Xiaohui Yan
Beyond topical relevance, passage ranking for open-domain factoid question answering also requires a passage to contain an answer (answerability).
no code implementations • 25 Jul 2020 • Haonan Jia, Xiao Zhang, Jun Xu, Wei Zeng, Hao Jiang, Xiaohui Yan, Ji-Rong Wen
Deep Q-learning algorithms often suffer from poor gradient estimations with an excessive variance, resulting in unstable training and poor sampling efficiency.
1 code implementation • 31 Jan 2020 • Shuwen Xiao, Zhou Zhao, Zijian Zhang, Xiaohui Yan, Min Yang
This paper addresses the task of query-focused video summarization, which takes user's query and a long video as inputs and aims to generate a query-focused video summary.
1 code implementation • 13 Aug 2019 • Ye Liu, Chenwei Zhang, Xiaohui Yan, Yi Chang, Philip S. Yu
To improve the quality and retrieval performance of the generated questions, we make two major improvements: 1) To better encode the semantics of ill-formed questions, we enrich the representation of questions with character embedding and the recent proposed contextual word embedding such as BERT, besides the traditional context-free word embeddings; 2) To make it capable to generate desired questions, we train the model with deep reinforcement learning techniques that considers an appropriate wording of the generation as an immediate reward and the correlation between generated question and answer as time-delayed long-term rewards.
1 code implementation • ACL 2019 • Peng Wu, Shu-Jian Huang, Rongxiang Weng, Zaixiang Zheng, Jianbing Zhang, Xiaohui Yan, Jia-Jun Chen
However, one critical problem is that current approaches only get high accuracy for questions whose relations have been seen in the training data.
6 code implementations • EMNLP 2018 • Congying Xia, Chenwei Zhang, Xiaohui Yan, Yi Chang, Philip S. Yu
User intent detection plays a critical role in question-answering and dialog systems.
no code implementations • NAACL 2018 • Fuad Issa, Marco Damonte, Shay B. Cohen, Xiaohui Yan, Yi Chang
Abstract Meaning Representation (AMR) parsing aims at abstracting away from the syntactic realization of a sentence, and denote only its meaning in a canonical form.