tailieunhanh - Báo cáo khoa học: "Semantic Types of Some Generic Relation Arguments: Detection and Evaluation"

This paper presents an approach to detection of the semantic types of relation arguments employing the WordNet hierarchy. Using the SemEval-2007 data, we show that the method allows to generalize relation arguments with high precision for such generic relations as Origin-Entity, Content-Container, Instrument-Agency and some other. | Semantic Types of Some Generic Relation Arguments Detection and Evaluation Sophia Katrenko Institute of Informatics University of Amsterdam the Netherlands katrenko@ Pieter Adriaans Institute of Informatics University of Amsterdam the Netherlands pietera@ Abstract This paper presents an approach to detection of the semantic types of relation arguments employing the WordNet hierarchy. Using the SemEval-2007 data we show that the method allows to generalize relation arguments with high precision for such generic relations as Origin-Entity Content-Container Instrument-Agency and some other. 1 Introduction and Motivation A common approach to learning relations is composed from two steps identification of arguments and relation validation. This methodology is widely used in different domains such as biomedical. For instance in order to extract instances of a relation of protein interactions one has to first identify all protein names in text and second verify if a relation between them holds. Clearly if arguments are already given accuracy of relation validation is higher compared to the situation when the arguments have to be identified automatically. In either case this methodology is effective for the domain-dependent relations but is not considered for more generic relation types. If a relation is more generic such as Part-Whole it is more difficult to identify its arguments because they can be of many different semantic types. An example below contains a causality relation virus causes flu . Note that syntactic information is not sufficient to be able to detect such relation mention and the background knowledge is needed. A person infected with a particular flu virus strain develops antibody against that virus. In this paper we propose a method to detect semantic types of the generic relation arguments. For the Part-Whole relation it is known that it embraces such subtypes as Member-Collection or Place-Area while there is not much .