Global ETD Search

1	A protocol for constructing a domain-specific ontology for use in biomedical information extraction using lexical-chaining analysis He, Xiaofen January 2007 (has links) In order to do more semantics-based information extraction, we require specialized domain models. We develop a hybrid approach for constructing such a domain-specific ontology, which integrates key concepts from the protein-protein–interaction domain with the Gene Ontology. In addition, we present a method for using the domain-specific ontology in a discourse-based analysis module for analyzing full-text articles on protein interactions. The analysis module uses a lexical chaining technique to extract strings of semantically related words that represent the topic structure of the text. We show that the domain-specific ontology improved the performance of the lexical-chaining module. As well the topic structure as represented by the lexical chains contains important information on protein-protein interactions appearing in the same textual context. Computer Science
2	A protocol for constructing a domain-specific ontology for use in biomedical information extraction using lexical-chaining analysis He, Xiaofen January 2007 (has links) In order to do more semantics-based information extraction, we require specialized domain models. We develop a hybrid approach for constructing such a domain-specific ontology, which integrates key concepts from the protein-protein–interaction domain with the Gene Ontology. In addition, we present a method for using the domain-specific ontology in a discourse-based analysis module for analyzing full-text articles on protein interactions. The analysis module uses a lexical chaining technique to extract strings of semantically related words that represent the topic structure of the text. We show that the domain-specific ontology improved the performance of the lexical-chaining module. As well the topic structure as represented by the lexical chains contains important information on protein-protein interactions appearing in the same textual context. Computer Science
3	Improving Topic Tracking with Domain Chaining Yang, Li 08 1900 (has links) Topic Detection and Tracking (TDT) research has produced some successful statistical tracking systems. While lexical chaining, a non-statistical approach, has also been applied to the task of tracking by Carthy and Stokes for the 2001 TDT evaluation, an efficient tracking system based on this technology has yet to be developed. In thesis we investigate two new techniques which can improve Carthy's original design. First, at the core of our system is a semantic domain chainer. This chainer relies not only on the WordNet database for semantic relationships but also on Magnini's semantic domain database, which is an extension of WordNet. The domain-chaining algorithm is a linear algorithm. Second, to handle proper nouns, we gather all of the ones that occur in a news story together in a chain reserved for proper nouns. In this thesis we also discuss the linguistic limitations of lexical chainers to represent textual meaning. Lexicography -- Data processing. Computational linguistics. Semantics. Topic tracking lexical chain domain chain chaining process
4	Rhythm and Rhetoric: A Linguistic Analysis of Barack Obama's Inaugural Address Batluk, Liilia January 2011 (has links) In this essay I shall analyze Barack Obama’s Inaugural Address, January, 2009 from the perspective of various linguistic techniques. More specifically, I shall propose and focus on the idea that the composition of the speech has an aim to create a unity of the speaker and the audience in order to deliver the message. Moreover, the speaker maintains the atmosphere of unity throughout the speech, so that the speech produces an effect when the audience becomes a co-author of it. My thesis will also discuss some aspects of persuasive strategies employed in the speech from those dating back as long as Ancient Greece to temporal discourses. The aim is to analyze how the use of a number of linguistic approaches creates a speech which senses an agreement and co-operation between the orator and the audience. rhetoric rhythm lexical chain parallelism alliteration foregrounding political speech personal deixis context semantics Barack Obama Specific Languages Studier av enskilda språk

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