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Motivation: Actor: [awards, height, age, weight, birthdate, birthplace, cause of death, real name] Painter: [paintings, biography, bibliography, autobiography, artwork, self portraits, quotations, bio, quotes, life history].
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Labeled Classes of Instances: - Similarly to [9], the extraction of labeled classes of instances relies on hand-written patterns, widely used in literature on extracting conceptual hierarchies from text
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Attributes of Labeled Classes of Instances 1. word 2. construction of internal search 3. construction of a reference internal search 4. ranking
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Conceptual Hierarchies: - Manually-constructed language resources such as WordNet provide reliable, wide-coverage upper-level conceptual hierarchies, by grouping phrases with the same meaning
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Similar-Sense Selection 1. synonyms 2. siblings, or coordinate terms 3. immediate superconcepts, or hypernyms 4. immediate subconcepts, or hyponyms available in the WordNet hierarchies around that sense
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Hierarchical Propagation - As mentioned earlier, a labeled class is accompanied by a ranked list of attributes extracted from query logs. Coverage-Based Attribute Specificity
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Hierarchical Attributes
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This paper introduces an extraction framework for exploiting labeled classes of instances acquired from a combination of documents and search query logs, to extract attributes over conceptual hierarchies.
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[1]M.BankoandO.Etzioni.Thetradeoffsbetweenopenandtraditionalrelationextr action.InProceedingsofthe46thAnnualMeetingoftheAssociationforComputati onalLinguistics(ACL-08),pages28–6, Columbus, Ohio, 2008. [2] T. Brants. TnT - a statistical part of speech tagger. In Proceedings of the 6th Conference on Applied Natural Language Processing (ANLP-00), pages 224–31, Seattle, Washington, 2000. [3] C. Fellbaum, editor. WordNet: An Electronic Lexical Database and Some of its Applications. MIT Press, 1998. [4] W. Gao, C. Niu, J. Nie, M. Zhou, J. Hu, K.Wong, and H. Hon. Cross- lingual query suggestion using query logs of different languages. In Proceedings of the 30th ACM Conference on Research and Development in Information Retrieval (SIGIR-07), pages 463–70, Amsterdam, The Netherlands, 2007. [5] M. Hearst. Automatic acquisition of hyponyms from large text corpora. In Proceedings of the 14 th InternationalConferenceonComputationalLinguistics(COLING- 92),pages539–45, Nantes, France, 1992.
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