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Corpus-based set expansion (i.e., finding the "complete" set of entities belonging to the same semantic class, based on a given corpus and a tiny set of seeds) is a critical task in knowledge discovery. It may facilitate numerous downstream…

Computation and Language · Computer Science 2019-10-21 Jiaming Shen , Zeqiu Wu , Dongming Lei , Jingbo Shang , Xiang Ren , Jiawei Han

Most weakly supervised named entity recognition (NER) models rely on domain-specific dictionaries provided by experts. This approach is infeasible in many domains where dictionaries do not exist. While a phrase retrieval model was used to…

Computation and Language · Computer Science 2023-06-02 Hyunjae Kim , Jaehyo Yoo , Seunghyun Yoon , Jaewoo Kang

Entity Matching is an essential part of all real-world systems that take in structured and unstructured data coming from different sources. Typically no common key is available for connecting records. Massive data cleaning and integration…

Social and Information Networks · Computer Science 2022-01-14 Ran Ziv , Ilan Gronau , Michael Fire

In text documents such as news articles, the content and key events usually revolve around a subset of all the entities mentioned in a document. These entities, often deemed as salient entities, provide useful cues of the aboutness of a…

Computation and Language · Computer Science 2024-04-04 Rajarshi Bhowmik , Marco Ponza , Atharva Tendle , Anant Gupta , Rebecca Jiang , Xingyu Lu , Qian Zhao , Daniel Preotiuc-Pietro

Google and other search engines feature the entity search by representing a knowledge card summarizing related facts about the user-supplied entity. However, the knowledge card is limited to certain entities that have a Wiki page or an…

Information Retrieval · Computer Science 2021-04-05 Sunday C. Ngwobia , Saeedeh Shekarpour , Faisal Alshargi

Named entities (NE) are objects that are referred to by names such as people, organizations and locations. Named entities and keywords are important to the meaning of a document. We propose a generalized vector space model that combines…

Information Retrieval · Computer Science 2018-07-23 Vuong M. Ngo , Tru H. Cao

We focus on two research issues in entity search: scoring a document or snippet that potentially supports a candidate entity, and aggregating scores from different snippets into an entity score. Proximity scoring has been studied in IR…

Information Retrieval · Computer Science 2013-03-14 Uma Sawant , Soumen Chakrabarti

Unsupervised learning of low-dimensional, semantic representations of words and entities has recently gained attention. In this paper we describe the Semantic Entity Retrieval Toolkit (SERT) that provides implementations of our previously…

Computation and Language · Computer Science 2017-07-18 Christophe Van Gysel , Maarten de Rijke , Evangelos Kanoulas

Rich entity representations are useful for a wide class of problems involving entities. Despite their importance, there is no standardized benchmark that evaluates the overall quality of entity representations. In this work, we propose…

Computation and Language · Computer Science 2019-11-12 Mingda Chen , Zewei Chu , Yang Chen , Karl Stratos , Kevin Gimpel

Medical entity linking is the task of identifying and standardizing medical concepts referred to in an unstructured text. Most of the existing methods adopt a three-step approach of (1) detecting mentions, (2) generating a list of candidate…

Computation and Language · Computer Science 2021-08-24 Shikhar Vashishth , Denis Newman-Griffis , Rishabh Joshi , Ritam Dutt , Carolyn Rose

This paper explores learning rich self-supervised entity representations from large amounts of the associated text. Once pre-trained, these models become applicable to multiple entity-centric tasks such as ranked retrieval, knowledge base…

Computation and Language · Computer Science 2021-03-01 Yury Zemlyanskiy , Sudeep Gandhe , Ruining He , Bhargav Kanagal , Anirudh Ravula , Juraj Gottweis , Fei Sha , Ilya Eckstein

Linking entities like people, organizations, books, music groups and their songs in text to knowledge bases (KBs) is a fundamental task for many downstream search and mining applications. Achieving high disambiguation accuracy crucially…

Information Retrieval · Computer Science 2018-10-25 Jaspreet Singh , Johannes Hoffart , Avishek Anand

Recent work in learning vector-space embeddings for multi-relational data has focused on combining relational information derived from knowledge bases with distributional information derived from large text corpora. We propose a simple…

Computation and Language · Computer Science 2016-05-19 Teng Long , Ryan Lowe , Jackie Chi Kit Cheung , Doina Precup

In this paper, we report our discovery on named entity distribution in a general word embedding space, which helps an open definition on multilingual named entity definition rather than previous closed and constraint definition on named…

Computation and Language · Computer Science 2021-02-11 Ying Luo , Hai Zhao , Zhuosheng Zhang , Bingjie Tang

``Classical'' word embeddings, such as Word2Vec, have been shown to capture the semantics of words based on their distributional properties. However, their ability to represent the different meanings that a word may have is limited. Such…

Computation and Language · Computer Science 2020-04-20 Lea Dieudonat , Kelvin Han , Phyllicia Leavitt , Esteban Marquer

Social world knowledge is a key ingredient in effective communication and information processing by humans and machines alike. As of today, there exist many knowledge bases that represent factual world knowledge. Yet, there is no resource…

Artificial Intelligence · Computer Science 2023-07-19 Nir Lotan , Einat Minkov

Extracting useful signals or pattern to support important business decisions for example analyzing investment product traction and discovering customer preference, risk monitoring etc. from unstructured text is a challenging task. Capturing…

Computation and Language · Computer Science 2025-06-03 Anshika Rawal , Abhijeet Kumar , Mridul Mishra

The increasing availability of semantic data has substantially enhanced Web applications. Semantic data such as RDF data is commonly represented as entity-property-value triples. The magnitude of semantic data, in particular the large…

Information Retrieval · Computer Science 2021-05-12 Qingxia Liu , Gong Cheng , Kalpa Gunaratna , Yuzhong Qu

Distributed word representations have been demonstrated to be effective in capturing semantic and syntactic regularities. Unsupervised representation learning from large unlabeled corpora can learn similar representations for those words…

Computation and Language · Computer Science 2015-12-01 Chunting Zhou , Chonglin Sun , Zhiyuan Liu , Francis C. M. Lau