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Learning to Represent and Understand Locative Prepositional Phrases

Cosic, Cynthia and Munro, Paul (1988) Learning to Represent and Understand Locative Prepositional Phrases. Technical Report. School of Library and Information Science, University of Pittsburgh, Pittsburgh, PA.

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The spatial juxtaposition observed between any two objects can generally be expressed by a locative prepositional phrase of the form noun-preposition-noun. A net work is described which learns to associate locative prepositions with the spatial relationships they express using back-propagation adaptation. Since the mapping is context sensitive, input patterns to the network include a representation of the objects: for example, the preposition on expresses different spatial relationships in the phrase "house on lake" and "plate on table". The network is designed such that, during the learning process, it must develop a small set of features for representing the nouns appropriately. The problem is framed as a pattern completion task in which the pattern to be completed consists of four components: two nouns, a preposition, and the spatial relationship; the missing component is either the preposition or the spatial relationship. After learning, the network was analyzed in terms of its ability to process novel pattern combinations, clustering of the noun representations, the core meanings of the prepositions, and the incremental influence of 0, 1, and 2 nouns on the interpreted meaning of a preposition.


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Item Type: Monograph (Technical Report)
Status: Published
CreatorsEmailPitt UsernameORCID
Cosic, Cynthia
Munro, Paulpwm@pitt.eduPWM
Monograph Type: Technical Report
Date: January 1988
Date Type: Publication
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Number: 10
Publisher: School of Library and Information Science, University of Pittsburgh
Place of Publication: Pittsburgh, PA
Institution: University of Pittsburgh
Department: School of Library and Information Science
Schools and Programs: School of Information Sciences > Library and Information Science
Refereed: Yes
Other ID: LIS002/IS88002
Date Deposited: 22 Apr 2013 17:29
Last Modified: 01 Nov 2017 14:02


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