Named Entity Recognizer employing Multiclass Support Vector Machines for the Development of Question Answering Systems
نویسندگان
چکیده
منابع مشابه
Named Entity Recognizer employing Multiclass Support Vector Machines for the Development of Question Answering Systems
Named Entity Recognition (NER) seeks to locate and classify atomic elements in text into predefined categories such as names of person, organization, location, Quantities, Percentage etc. Named entities tell us the roles of each meaning bearing word in a sentence and hence identification of these entities certainly helps us to extract the essence of the text which is very important in Question ...
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This report describes a degree project in Computer Science, the aim of which was to construct a system for Named Entity Recognition in Swedish texts of names of people, locations and organizations, as well as expressions for time. This system was constructed from the part-of-speech tagger Granska and the Support Vector Machine system SVMlin. The completed system was trained to recognize Named E...
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Named Entity Recognisers (NERs) are typically used by question answering (QA) systems as means to preselect answer candidates. However, there has not been much work on the formal assessment of the use of NERs for QA nor on their optimal parameters. In this paper we investigate the main characteristics of a NER for QA. The results show that it is important to maintain high recall to retain all p...
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Lexical mismatch is a problem that confounds automatic question answering systems. While existing lexical ontologies such as WordNet have been successfully used to match verbal synonyms (e.g., beat and defeat) and common nouns (tennis is-a sport), their coverage of proper nouns is less extensive. Question answering depends substantially on processing named entities, and thus it would be of sign...
متن کاملNamed Entity Recognition for Question Answering
Current text-based question answering (QA) systems usually contain a named entity recogniser (NER) as a core component. Named entity recognition has traditionally been developed as a component for information extraction systems, and current techniques are focused on this end use. However, no formal assessment has been done on the characteristics of a NER within the task of question answering. I...
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ژورنال
عنوان ژورنال: International Journal of Computer Applications
سال: 2011
ISSN: 0975-8887
DOI: 10.5120/3146-4343