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We present a new resource for the NLP community, namely a large (3.5M+ sentence) knowledge base of *generic statements*, e.g., "Trees remove carbon dioxide from the atmosphere", collected from multiple corpora. This is the first large…

Computation and Language · Computer Science 2020-05-05 Sumithra Bhakthavatsalam , Chloe Anastasiades , Peter Clark

Knowledge bases (KB), both automatically and manually constructed, are often incomplete --- many valid facts can be inferred from the KB by synthesizing existing information. A popular approach to KB completion is to infer new relations by…

Computation and Language · Computer Science 2019-01-01 Rajarshi Das , Shehzaad Dhuliawala , Manzil Zaheer , Luke Vilnis , Ishan Durugkar , Akshay Krishnamurthy , Alex Smola , Andrew McCallum

We present a family of novel methods for embedding knowledge graphs into real-valued tensors. These tensor-based embeddings capture the ordered relations that are typical in the knowledge graphs represented by semantic web languages like…

Machine Learning · Computer Science 2022-08-25 Ankur Padia , Kostantinos Kalpakis , Francis Ferraro , Tim Finin

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

Generics express generalizations about the world (e.g., birds can fly) that are not universally true (e.g., newborn birds and penguins cannot fly). Commonsense knowledge bases, used extensively in NLP, encode some generic knowledge but…

Computation and Language · Computer Science 2023-03-27 Emily Allaway , Jena D. Hwang , Chandra Bhagavatula , Kathleen McKeown , Doug Downey , Yejin Choi

Most of previous work in knowledge base (KB) completion has focused on the problem of relation extraction. In this work, we focus on the task of inferring missing entity type instances in a KB, a fundamental task for KB competition yet…

Computation and Language · Computer Science 2015-04-28 Arvind Neelakantan , Ming-Wei Chang

Knowledge bases (KBs) have gradually become a valuable asset for many AI applications. While many current KBs are quite large, they are widely acknowledged as incomplete, especially lacking facts of long-tail entities, e.g., less famous…

Information Retrieval · Computer Science 2020-02-20 Ermei Cao , Difeng Wang , Jiacheng Huang , Wei Hu

While several matrix factorization (MF) and tensor factorization (TF) models have been proposed for knowledge base (KB) inference, they have rarely been compared across various datasets. Is there a single model that performs well across…

Artificial Intelligence · Computer Science 2017-06-05 Prachi Jain , Shikhar Murty , Mausam , Soumen Chakrabarti

We propose a new framework for combining entity resolution and query answering in knowledge bases (KBs) with tuple-generating dependencies (tgds) and equality-generating dependencies (egds) as rules. We define the semantics of the KB in…

Databases · Computer Science 2023-10-20 Ronald Fagin , Phokion G. Kolaitis , Domenico Lembo , Lucian Popa , Federico Scafoglieri

General-purpose knowledge bases (KBs) are a cornerstone of knowledge-centric AI. Many of them are constructed pragmatically from Web sources, and are thus far from complete. This poses challenges for the consumption as well as the curation…

Artificial Intelligence · Computer Science 2023-12-07 Simon Razniewski , Hiba Arnaout , Shrestha Ghosh , Fabian Suchanek

Structured knowledge bases (KBs) are the backbone of many know\-ledge-intensive applications, and their automated construction has received considerable attention. In particular, open information extraction (OpenIE) is often used to induce…

Computation and Language · Computer Science 2023-06-23 Julien Romero , Simon Razniewski

Knowledge bases (KBs) are the backbone of many ubiquitous applications and are thus required to exhibit high precision. However, for KBs that store subjective attributes of entities, e.g., whether a movie is "kid friendly", simply…

Artificial Intelligence · Computer Science 2019-08-01 Ari Kobren , Pablo Barrio , Oksana Yakhnenko , Johann Hibschman , Ian Langmore

Knowledge graphs are used to represent relational information in terms of triples. To enable learning about domains, embedding models, such as tensor factorization models, can be used to make predictions of new triples. Often there is…

Machine Learning · Computer Science 2018-12-11 Bahare Fatemi , Siamak Ravanbakhsh , David Poole

Question answering over knowledge base (KB-QA) has recently become a popular research topic in NLP. One popular way to solve the KB-QA problem is to make use of a pipeline of several NLP modules, including entity discovery and linking (EDL)…

Computation and Language · Computer Science 2019-04-01 Dekun Wu , Nana Nosirova , Hui Jiang , Mingbin Xu

Large-scale knowledge bases (KBs) like Freebase and Wikidata house millions of structured knowledge. Knowledge Base Question Answering (KBQA) provides a user-friendly way to access these valuable KBs via asking natural language questions.…

Computation and Language · Computer Science 2024-06-24 Lingxi Zhang , Jing Zhang , Yanling Wang , Cuiping Li , Hong Chen

Knowledge base question answering (KBQA) aims to answer user questions in natural language using rich human knowledge stored in large KBs. As current KBQA methods struggle with unseen knowledge base elements at test time,we introduce…

Computation and Language · Computer Science 2025-09-11 Shengxiang Gao , Jey Han Lau , Jianzhong Qi

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

Knowledge Graph Completion is a task of expanding the knowledge graph/base through estimating possible entities, or proper nouns, that can be connected using a set of predefined relations, or verb/predicates describing interconnections of…

Computation and Language · Computer Science 2021-01-25 Tong Chen , Sirou Zhu , Yiming Wen , Zhaomin Zheng

Knowledge bases are collections of domain-specific and commonsense facts. Recently, the sizes of KBs are rocketing due to automatic extraction for knowledge and facts. For example, the number of facts in WikiData is up to 974 million!…

Databases · Computer Science 2021-10-22 Ruoyu Wang , Daniel Sun , Guoqiang Li , Raymond Wong , Shiping Chen

Automatic KB completion for commonsense knowledge graphs (e.g., ATOMIC and ConceptNet) poses unique challenges compared to the much studied conventional knowledge bases (e.g., Freebase). Commonsense knowledge graphs use free-form text to…

Computation and Language · Computer Science 2019-12-23 Chaitanya Malaviya , Chandra Bhagavatula , Antoine Bosselut , Yejin Choi
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