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Ontology

About: Ontology is a(n) research topic. Over the lifetime, 11351 publication(s) have been published within this topic receiving 216225 citation(s).

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Papers
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Proceedings ArticleDOI
08 May 2007-
Abstract: We present YAGO, a light-weight and extensible ontology with high coverage and quality. YAGO builds on entities and relations and currently contains more than 1 million entities and 5 million facts. This includes the Is-A hierarchy as well as non-taxonomic relations between entities (such as HASONEPRIZE). The facts have been automatically extracted from Wikipedia and unified with WordNet, using a carefully designed combination of rule-based and heuristic methods described in this paper. The resulting knowledge base is a major step beyond WordNet: in quality by adding knowledge about individuals like persons, organizations, products, etc. with their semantic relationships - and in quantity by increasing the number of facts by more than an order of magnitude. Our empirical evaluation of fact correctness shows an accuracy of about 95%. YAGO is based on a logically clean model, which is decidable, extensible, and compatible with RDFS. Finally, we show how YAGO can be further extended by state-of-the-art information extraction techniques.

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3,180 citations


7


Book
01 Jan 1969-

2,185 citations


Proceedings Article
01 Mar 1997-
TL;DR: The goal of this paper is to clarify to readers interested in building ontologies from scratch, the activities they should perform and in which order, as well as the set of techniques to be used in each phase of the methodology.

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Abstract: This paper does not pretend either to transform completely the ontological art in engineering or to enumerate exhaustively the complete set of works that has been reported in this area. Its goal is to clarify to readers interested in building ontologies from scratch, the activities they should perform and in which order, as well as the set of techniques to be used in each phase of the methodology. This paper only presents a set of activities that conform the ontology developmentp rocess, a life cycle to build ontologies based in evolving prototypes, and METHONTOLOGY, a well-structured methodology used to build ontologies from scratch. This paper gathers the experience of the authors on building an ontology in the domain of chemicals.

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1,590 citations


Book
14 Dec 1990-
Abstract: Being-in-the-World is a guide to one of the most influential philosophical works of this century: Division I of Part One of Being and Time, where Martin Heidegger works out an original and powerful account of being-in-the-world which he then uses to ground a profound critique of traditional ontology and epistemology. Hubert Dreyfus's commentary opens the way for a new appreciation of this difficult philosopher, revealing a rigorous and illuminating vocabulary that is indispensable for talking about the phenomenon of world. The publication of Being and Time in 1927 turned the academic world on its head. Since then it has become a touchstone for philosophers as diverse as Marcuse, Sartre, Foucault, and Derrida who seek an alternative to the rationalist Cartesian tradition of western philosophy. But Heidegger's text is notoriously dense, and his language seems to consist of unnecessarily barbaric neologisms; to the neophyte and even to those schooled in Heidegger thought, the result is often incomprehensible. Dreyfus's approach to this daunting book is straightforward and pragmatic. He explains the text by frequent examples drawn from everyday life, and he skillfully relates Heidegger's ideas to the questions about being and mind that have preoccupied a generation of cognitive scientists and philosophers of mind.

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1,461 citations


Proceedings Article
01 Jan 2001-
TL;DR: The state of the art in ontology-based information integration is summarized and the use on ontologies for the integration of heterogeneous information sources is reviewed.

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Abstract: We review the use on ontologies for the integration of heterogeneous information sources. Based on an in-depth evaluation of existing approaches to this problem we discuss how ontologies are used to support the integration task. We evaluate and compare the languages used to represent the ontologies and the use of mappings between ontologies as well as to connect ontologies with information sources. We also ask for ontology engineering methods and tools used to develop ontologies for information integration. Based on the results of our analysis we summarize the state of the art in ontology-based information integration and name areas of further research activities.

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1,367 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20222
2021258
2020427
2019409
2018471
2017453

Top Attributes

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Topic's top 5 most impactful authors

Giancarlo Guizzardi

58 papers, 2.8K citations

Barry Smith

25 papers, 1.6K citations

Nicola Guarino

21 papers, 3.4K citations

Aldo Gangemi

19 papers, 1.2K citations

Robert Meersman

17 papers, 881 citations