Wenge Rong

Multidimensional scaling based knowledge provision for new questions in community Question Answering systems

2016

Community-based Question Answering (CQA) sites have become popular since they allow users to get answers to complex, detailed and personal question from other users directly. However, since answering a question depends on the ability and …

Syntax Tree Aware Adversarial Question Rewriting for Answer Selection

2019

Answer selection is an important method to achieve better user experience in question answering (QA) systems and it is essential in ensuring better QA matching performance. Improving mutual information between QA pairs is a useful …

Enhancing Dual-Encoders with Question and Answer Cross-Embeddings for Answer Retrieval

2021

Dual-Encoders is a promising mechanism for answer retrieval in question answering (QA) systems. Currently most conventional Dual-Encoders learn the semantic representations of questions and answers merely through matching score. Researchers proposed to introduce the QA …

Query-Response Interactions by Multi-tasks in Semantic Search for Chatbot Candidate Retrieval

2022 · arXiv (Cornell University)

Semantic search for candidate retrieval is an important yet neglected problem in retrieval-based Chatbots, which aims to select a bunch of candidate responses efficiently from a large pool. The existing bottleneck is to ensure the …

Mixture of Attention Heads: Selecting Attention Heads Per Token

2022

Mixture-of-Experts (MoE) networks have been proposed as an efficient way to scale up model capacity and implement conditional computing. However, the study of MoE components mostly focused on the feedforward layer in Transformer architecture. This …

Explainable Few-shot Knowledge Tracing

2024 · arXiv (Cornell University)

Knowledge tracing (KT), aiming to mine students' mastery of knowledge by their exercise records and predict their performance on future test questions, is a critical task in educational assessment. While researchers achieved tremendous success with …

Question/Answer Matching for CQA System via Combining Lexical and Sequential Information

2015 · Proceedings of the AAAI Conference on Artificial Intelligence

Community-based Question Answering (CQA) has become popular in knowledge sharing sites since it allows users to get answers to complex, detailed, and personal questions directly from other users. Large archives of historical questions and associated …