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Despite recent progress on conversational systems, they still do not perform smoothly and coherently when faced with ambiguous requests. When questions are unclear, conversational systems should have the ability to ask clarifying questions,…

信息检索 · 计算机科学 2022-08-10 Negar Arabzadeh , Mahsa Seifikar , Charles L. A. Clarke

While there has been substantial progress in factoid question-answering (QA), answering complex questions remains challenging, typically requiring both a large body of knowledge and inference techniques. Open Information Extraction (Open…

人工智能 · 计算机科学 2017-04-20 Tushar Khot , Ashish Sabharwal , Peter Clark

Question Answering (QA) is one of the most important natural language processing (NLP) tasks. It aims using NLP technologies to generate a corresponding answer to a given question based on the massive unstructured corpus. With the…

计算与语言 · 计算机科学 2022-07-01 Zhen Wang

Domain-specific quantitative reasoning remains a major challenge for large language models (LLMs), especially in fields requiring expert knowledge and complex question answering (QA). In this work, we propose Expert Question Decomposition…

计算与语言 · 计算机科学 2025-10-03 Mengyu Wang , Sotirios Sabanis , Miguel de Carvalho , Shay B. Cohen , Tiejun Ma

This paper is concerned with the task of multi-hop open-domain Question Answering (QA). This task is particularly challenging since it requires the simultaneous performance of textual reasoning and efficient searching. We present a method…

计算与语言 · 计算机科学 2019-06-18 Yair Feldman , Ran El-Yaniv

In relation extraction for knowledge-based question answering, searching from one entity to another entity via a single relation is called "one hop". In related work, an exhaustive search from all one-hop relations, two-hop relations, and…

计算与语言 · 计算机科学 2019-04-03 Zi-Yuan Chen , Chih-Hung Chang , Yi-Pei Chen , Jijnasa Nayak , Lun-Wei Ku

Question answering (QA) models for reading comprehension have been demonstrated to exploit unintended dataset biases such as question-context lexical overlap. This hinders QA models from generalizing to under-represented samples such as…

计算与语言 · 计算机科学 2021-09-24 Kazutoshi Shinoda , Saku Sugawara , Akiko Aizawa

One of the most intriguing features of the Visual Question Answering (VQA) challenge is the unpredictability of the questions. Extracting the information required to answer them demands a variety of image operations from detection and…

计算机视觉与模式识别 · 计算机科学 2016-12-19 Peng Wang , Qi Wu , Chunhua Shen , Anton van den Hengel

Answer selection is an important subtask of question answering (QA), where deep models usually achieve better performance. Most deep models adopt question-answer interaction mechanisms, such as attention, to get vector representations for…

计算与语言 · 计算机科学 2019-05-28 Dong Xu , Wu-Jun Li

Information retrieval (IR) or knowledge retrieval, is a critical component for many down-stream tasks such as open-domain question answering (QA). It is also very challenging, as it requires succinctness, completeness, and correctness. In…

计算与语言 · 计算机科学 2023-08-10 Xiaodong Yu , Ben Zhou , Dan Roth

OOD detection has become more pertinent with advances in network design and increased task complexity. Identifying which parts of the data a given network is misclassifying has become as valuable as the network's overall performance. We can…

计算机视觉与模式识别 · 计算机科学 2024-03-05 Rishi Singhal , Srinath Srinivasan

In today's fast-paced industry, professionals face the challenge of summarizing a large number of documents and extracting vital information from them on a daily basis. These metrics are frequently hidden away in tables and/or their nested…

计算与语言 · 计算机科学 2024-03-29 Che Guan , Mengyu Huang , Peng Zhang

Evidence retrieval is a critical stage of question answering (QA), necessary not only to improve performance, but also to explain the decisions of the corresponding QA method. We introduce a simple, fast, and unsupervised iterative evidence…

计算与语言 · 计算机科学 2020-05-05 Vikas Yadav , Steven Bethard , Mihai Surdeanu

Open-domain Question Answering (ODQA) has achieved significant results in terms of supervised learning manner. However, data annotation cannot also be irresistible for its huge demand in an open domain. Though unsupervised QA or…

计算与语言 · 计算机科学 2021-09-01 Pengfei Zhu , Xiaoguang Li , Jian Li , Hai Zhao

Graph Retrieval-Augmented Generation (Graph RAG) effectively builds a knowledge graph (KG) to connect disparate facts across a large document corpus. However, this broad-view approach often lacks the deep structured reasoning needed for…

计算与语言 · 计算机科学 2025-10-27 Jiaoyang Li , Junhao Ruan , Shengwei Tang , Saihan Chen , Kaiyan Chang , Yuan Ge , Tong Xiao , Jingbo Zhu

Non-extractive commonsense QA remains a challenging AI task, as it requires systems to reason about, synthesize, and gather disparate pieces of information, in order to generate responses to queries. Recent approaches on such tasks show…

计算与语言 · 计算机科学 2019-11-01 Kaixin Ma , Jonathan Francis , Quanyang Lu , Eric Nyberg , Alessandro Oltramari

Reading comprehension QA tasks have seen a recent surge in popularity, yet most works have focused on fact-finding extractive QA. We instead focus on a more challenging multi-hop generative task (NarrativeQA), which requires the model to…

计算与语言 · 计算机科学 2019-06-04 Lisa Bauer , Yicheng Wang , Mohit Bansal

Although deep neural networks have achieved tremendous success for question answering (QA), they are still suffering from heavy computational and energy cost for real product deployment. Further, existing QA systems are bottlenecked by the…

计算与语言 · 计算机科学 2021-09-03 Yuwei Fang , Shuohang Wang , Zhe Gan , Siqi Sun , Jingjing Liu , Chenguang Zhu

Recently machine learning is being applied to almost every data domain one of which is Question Answering Systems (QAS). A typical Question Answering System is fairly an information retrieval system, which matches documents or text and…

信息检索 · 计算机科学 2019-10-08 Muhammad Zain Amin , Noman Nadeem

We introduce a method to learn unsupervised semantic visual information based on the premise that complex events can be decomposed into simpler events and that these simple events are shared across several complex events. We first employ a…

计算机视觉与模式识别 · 计算机科学 2025-01-07 Valter Estevam , Rayson Laroca , Helio Pedrini , David Menotti