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Most successful information extraction systems operate with access to a large collection of documents. In this work, we explore the task of acquiring and incorporating external evidence to improve extraction accuracy in domains where the…

Computation and Language · Computer Science 2016-09-29 Karthik Narasimhan , Adam Yala , Regina Barzilay

The ultimate goal of dialog research is to develop systems that can be effectively used in interactive settings by real users. To this end, we introduced the Interactive Evaluation of Dialog Track at the 9th Dialog System Technology…

Computation and Language · Computer Science 2022-08-01 Shikib Mehri , Yulan Feng , Carla Gordon , Seyed Hossein Alavi , David Traum , Maxine Eskenazi

The article describes the new approach for quality improvement of automated dialogue systems for customer support service. Analysis produced in the paper demonstrates the dependency of the quality of the retrieval-based dialogue system…

Computation and Language · Computer Science 2018-11-27 Aigul Nugmanova , Andrei Smirnov , Galina Lavrentyeva , Irina Chernykh

Combining semantic information with behavioral data is a crucial research area in recommender systems. A promising approach involves leveraging external knowledge to enrich behavioral-based recommender systems with abundant semantic…

Information Retrieval · Computer Science 2024-05-27 Weiqing Luo , Chonggang Song , Lingling Yi , Gong Cheng

Building robust and general dialogue models for spoken conversations is challenging due to the gap in distributions of spoken and written data. This paper presents our approach to build generalized models for the Knowledge-grounded…

Computation and Language · Computer Science 2022-03-09 Ruijie Yan , Shuang Peng , Haitao Mi , Liang Jiang , Shihui Yang , Yuchi Zhang , Jiajun Li , Liangrui Peng , Yongliang Wang , Zujie Wen

State-of-the-art approaches for Knowledge Base Completion (KBC) exploit deep neural networks trained with both false and true assertions: positive assertions are explicitly taken from the knowledge base, whereas negative ones are generated…

Machine Learning · Computer Science 2019-08-20 Sarthak Dash , Alfio Gliozzo

In the rapidly advancing realm of educational technology, it becomes critical to accurately trace and understand student knowledge states. Conventional Knowledge Tracing (KT) models have mainly focused on binary responses (i.e., correct and…

Artificial Intelligence · Computer Science 2024-08-26 Soonwook Park , Donghoon Lee , Hogun Park

Negative sampling has emerged as an effective technique that enables deep learning models to learn better representations by introducing the paradigm of learn-to-compare. The goal of this approach is to add robustness to deep learning…

Computation and Language · Computer Science 2025-03-26 Suman Adhya , Avishek Lahiri , Debarshi Kumar Sanyal , Partha Pratim Das

Distantly supervision automatically generates plenty of training samples for relation extraction. However, it also incurs two major problems: noisy labels and imbalanced training data. Previous works focus more on reducing wrongly labeled…

Computation and Language · Computer Science 2021-05-24 Chenhao Xie , Jiaqing Liang , Jingping Liu , Chengsong Huang , Wenhao Huang , Yanghua Xiao

Conversational Recommender Systems (CRS) has become an emerging research topic seeking to perform recommendations through interactive conversations, which generally consist of generation and recommendation modules. Prior work on CRS tends…

Computation and Language · Computer Science 2022-09-26 Lingzhi Wang , Shafiq Joty , Wei Gao , Xingshan Zeng , Kam-Fai Wong

A limitation of current neural dialog models is that they tend to suffer from a lack of specificity and informativeness in generated responses, primarily due to dependence on training data that covers a limited variety of scenarios and…

Computation and Language · Computer Science 2022-03-23 Bodhisattwa Prasad Majumder , Harsh Jhamtani , Taylor Berg-Kirkpatrick , Julian McAuley

Knowledge retrieval is one of the major challenges in building a knowledge-grounded dialogue system. A common method is to use a neural retriever with a distributed approximate nearest-neighbor database to quickly find the relevant…

Information Retrieval · Computer Science 2024-05-09 Nhat Tran , Diane Litman

In this paper, we reflect on ways to improve the quality of bio-medical information retrieval by drawing implicit negative feedback from negated information in noisy natural language search queries. We begin by studying the extent to which…

Information Retrieval · Computer Science 2016-08-08 Lorenz Kuhn , Carsten Eickhoff

Large Language Models (LLMs) perform well in general QA but often struggle in domain-specific scenarios. Retrieval-Augmented Generation (RAG) introduces external knowledge but suffers from hallucinations and latency due to noisy retrievals.…

Computation and Language · Computer Science 2025-09-19 Bolei He , Xinran He , Run Shao , Shanfu Shu , Xianwei Xue , Mingquan Cheng , Haifeng Li , Zhenhua Ling

Commonsense and background knowledge is required for a QA model to answer many nontrivial questions. Different from existing work on knowledge-aware QA, we focus on a more challenging task of leveraging external knowledge to generate…

Computation and Language · Computer Science 2019-09-09 Bin Bi , Chen Wu , Ming Yan , Wei Wang , Jiangnan Xia , Chenliang Li

The open-ended question answering task of Text-VQA often requires reading and reasoning about rarely seen or completely unseen scene-text content of an image. We address this zero-shot nature of the problem by proposing the generalized use…

Computer Vision and Pattern Recognition · Computer Science 2022-07-18 Arka Ujjal Dey , Ernest Valveny , Gaurav Harit

Recently several datasets have been proposed to encourage research in Question Answering domains where commonsense knowledge is expected to play an important role. Recent language models such as ROBERTA, BERT and GPT that have been…

Computation and Language · Computer Science 2020-04-20 Arindam Mitra , Pratyay Banerjee , Kuntal Kumar Pal , Swaroop Mishra , Chitta Baral

Short text classification is one of important tasks in Natural Language Processing (NLP). Unlike paragraphs or documents, short texts are more ambiguous since they have not enough contextual information, which poses a great challenge for…

Computation and Language · Computer Science 2019-02-22 Jindong Chen , Yizhou Hu , Jingping Liu , Yanghua Xiao , Haiyun Jiang

Natural Language Inference (NLI) is fundamental to many Natural Language Processing (NLP) applications including semantic search and question answering. The NLI problem has gained significant attention thanks to the release of large scale,…

This paper summarizes our submission to Task 2 of the second track of the 10th Dialog System Technology Challenge (DSTC10) "Knowledge-grounded Task-oriented Dialogue Modeling on Spoken Conversations". Similar to the previous year's…

Computation and Language · Computer Science 2021-12-17 David Thulke , Nico Daheim , Christian Dugast , Hermann Ney