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Over the past few years, large knowledge bases have been constructed to store massive amounts of knowledge. However, these knowledge bases are highly incomplete, for example, over 70% of people in Freebase have no known place of birth. To…

Databases · Computer Science 2023-05-11 Yang Peng , Daisy Zhe Wang

Answering complex questions is a time-consuming activity for humans that requires reasoning and integration of information. Recent work on reading comprehension made headway in answering simple questions, but tackling complex questions is…

Computation and Language · Computer Science 2018-03-20 Alon Talmor , Jonathan Berant

Search engines based on keyword retrieval can no longer adapt to the way of information acquisition in the era of intelligent Internet of Things due to the return of keyword related Internet pages. How to quickly, accurately and effectively…

Computation and Language · Computer Science 2022-01-03 Gaochen Wu , Bin Xu , Yuxin Qin , Yang Liu , Lingyu Liu , Ziwei Wang

We propose a new end-to-end question answering model, which learns to aggregate answer evidence from an incomplete knowledge base (KB) and a set of retrieved text snippets. Under the assumptions that the structured KB is easier to query and…

Computation and Language · Computer Science 2019-06-03 Wenhan Xiong , Mo Yu , Shiyu Chang , Xiaoxiao Guo , William Yang Wang

Existing question answering methods infer answers either from a knowledge base or from raw text. While knowledge base (KB) methods are good at answering compositional questions, their performance is often affected by the incompleteness of…

Computation and Language · Computer Science 2017-04-28 Rajarshi Das , Manzil Zaheer , Siva Reddy , Andrew McCallum

Knowledge Base, represents facts about the world, often in some form of subsumption ontology, rather than implicitly, embedded in procedural code, the way a conventional computer program does. While there is a rapid growth in knowledge…

Computation and Language · Computer Science 2020-10-20 Sai Sharath Japa , Rekabdar Banafsheh

Knowledge bases contribute to many web search and mining tasks, yet they are often incomplete. To add missing facts to a given knowledge base, various embedding models have been proposed in the recent literature. Perhaps surprisingly,…

Artificial Intelligence · Computer Science 2019-02-04 Yanjie Wang , Daniel Ruffinelli , Rainer Gemulla , Samuel Broscheit , Christian Meilicke

Incorporating multiple knowledge sources is proven to be beneficial for answering complex factoid questions. To utilize multiple knowledge bases (KB), previous works merge all KBs into a single graph via entity alignment and reduce the…

Computation and Language · Computer Science 2023-09-12 Minhao Zhang , Yongliang Ma , Yanzeng Li , Ruoyu Zhang , Lei Zou , Ming Zhou

Existing question answering datasets focus on dealing with homogeneous information, based either only on text or KB/Table information alone. However, as human knowledge is distributed over heterogeneous forms, using homogeneous information…

Computation and Language · Computer Science 2021-05-13 Wenhu Chen , Hanwen Zha , Zhiyu Chen , Wenhan Xiong , Hong Wang , William Wang

Question Answering (QA) systems are becoming the inspiring model for the future of search engines. While recently, underlying datasets for QA systems have been promoted from unstructured datasets to structured datasets with highly…

Information Retrieval · Computer Science 2016-02-17 Saeedeh Shekarpour , Denis Lukovnikov , Ashwini Jaya Kumar , Kemele Endris , Kuldeep Singh , Harsh Thakkar , Christoph Lange

Question answering over knowledge bases (KBQA) has become a popular approach to help users extract information from knowledge bases. Although several systems exist, choosing one suitable for a particular application scenario is difficult.…

Computation and Language · Computer Science 2022-11-16 Khiem Vinh Tran , Hao Phu Phan , Khang Nguyen Duc Quach , Ngan Luu-Thuy Nguyen , Jun Jo , Thanh Tam Nguyen

Open domain Question Answering (QA) systems must interact with external knowledge sources, such as web pages, to find relevant information. Information sources like Wikipedia, however, are not well structured and difficult to utilize in…

Computation and Language · Computer Science 2017-03-28 Yusuke Watanabe , Bhuwan Dhingra , Ruslan Salakhutdinov

Question answering (QA) has become a popular way for humans to access billion-scale knowledge bases. Unlike web search, QA over a knowledge base gives out accurate and concise results, provided that natural language questions can be…

Computation and Language · Computer Science 2019-03-07 Wanyun Cui , Yanghua Xiao , Haixun Wang , Yangqiu Song , Seung-won Hwang , Wei Wang

Thanks to information extraction and semantic Web efforts, search on unstructured text is increasingly refined using semantic annotations and structured knowledge bases. However, most users cannot become familiar with the schema of…

Information Retrieval · Computer Science 2012-12-27 Uma Sawant , Soumen Chakrabarti

Relation linking is essential to enable question answering over knowledge bases. Although there are various efforts to improve relation linking performance, the current state-of-the-art methods do not achieve optimal results, therefore,…

Table question answering is a popular task that assesses a model's ability to understand and interact with structured data. However, the given table often does not contain sufficient information for answering the question, necessitating the…

Computation and Language · Computer Science 2024-01-30 Yujian Liu , Jiabao Ji , Tong Yu , Ryan Rossi , Sungchul Kim , Handong Zhao , Ritwik Sinha , Yang Zhang , Shiyu Chang

In this position paper, we propose a new approach to generating a type of knowledge base (KB) from text, based on question generation and entity linking. We argue that the proposed type of KB has many of the key advantages of a traditional…

Artificial Intelligence · Computer Science 2022-07-05 Wenhu Chen , William W. Cohen , Michiel De Jong , Nitish Gupta , Alessandro Presta , Pat Verga , John Wieting

Question Answering (QA) systems provide easy access to the vast amount of knowledge without having to know the underlying complex structure of the knowledge. The research community has provided ad hoc solutions to the key QA tasks,…

Computation and Language · Computer Science 2019-06-11 Somayeh Asadifar , Mohsen Kahani , Saeedeh Shekarpour

The aim of knowledge base completion is to predict unseen facts from existing facts in knowledge bases. In this work, we introduce the first approach for transfer of knowledge from one collection of facts to another without the need for…

Computation and Language · Computer Science 2021-08-31 Vid Kocijan , Thomas Lukasiewicz

We propose a method for visual question answering which combines an internal representation of the content of an image with information extracted from a general knowledge base to answer a broad range of image-based questions. This allows…

Computer Vision and Pattern Recognition · Computer Science 2016-04-15 Qi Wu , Peng Wang , Chunhua Shen , Anthony Dick , Anton van den Hengel
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