From information to knowledge: Harvesting entities and relationships from web sources

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From information to knowledge: Harvesting entities and relationships from web sources is a 2010 conference paper written in English by Weikum G., Theobald M. and published in Proceedings of the ACM SIGACT-SIGMOD-SIGART Symposium on Principles of Database Systems.

[edit] Abstract

There are major trends to advance the functionality of search engines to a more expressive semantic level. This is enabled by the advent of knowledge-sharing communities such as Wikipedia and the progress in automatically extracting entities and relationships from semistructured as well as natural-language Web sources. Recent endeavors of this kind include DBpedia, EntityCube, KnowItAll, ReadTheWeb, and our own YAGO-NAGA project (and others). The goal is to automatically construct and maintain a comprehensive knowledge base of facts about named entities, their semantic classes, and their mutual relations as well as temporal contexts, with high precision and high recall. This tutorial discusses state-of-the-art methods, research opportunities, and open challenges along this avenue of knowledge harvesting.

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