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].
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
Attributes of Labeled Classes of Instances 1. word 2. construction of internal search 3. construction of a reference internal search 4. ranking
Conceptual Hierarchies: - Manually-constructed language resources such as WordNet provide reliable, wide-coverage upper-level conceptual hierarchies, by grouping phrases with the same meaning
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
Hierarchical Propagation - As mentioned earlier, a labeled class is accompanied by a ranked list of attributes extracted from query logs. Coverage-Based Attribute Specificity
Hierarchical Attributes
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.
[1]M.BankoandO.Etzioni.Thetradeoffsbetweenopenandtraditionalrelationextr action.InProceedingsofthe46thAnnualMeetingoftheAssociationforComputati onalLinguistics(ACL-08),pages28–6, Columbus, Ohio, [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, [3] C. Fellbaum, editor. WordNet: An Electronic Lexical Database and Some of its Applications. MIT Press, [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, [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.