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Automatic Identification of Topic Ta...

Yang, Seungwon.

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Automatic Identification of Topic Tags from Texts Based on Expansion-Extraction Approach.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Automatic Identification of Topic Tags from Texts Based on Expansion-Extraction Approach./
作者:	Yang, Seungwon.
面頁冊數:	231 p.
附註:	Source: Dissertation Abstracts International, Volume: 75-06(E), Section: B.
Contained By:	Dissertation Abstracts International75-06B(E).
標題:	Computer Science. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3585873
ISBN:	9781303789144

Automatic Identification of Topic Tags from Texts Based on Expansion-Extraction Approach.
Yang, Seungwon.

Automatic Identification of Topic Tags from Texts Based on Expansion-Extraction Approach. - 231 p.

Source: Dissertation Abstracts International, Volume: 75-06(E), Section: B.

Thesis (Ph.D.)--Virginia Polytechnic Institute and State University, 2013.

Identifying topics of a textual document is useful for many purposes. We can organize the documents by topics in digital libraries. Then, we could browse and search for the documents with specific topics. By examining the topics of a document, we can quickly understand what the document is about. To augment the traditional manual way of topic tagging tasks, which is labor-intensive, solutions using computers have been developed.

ISBN: 9781303789144Subjects--Topical Terms:

626642
Computer Science.

Automatic Identification of Topic Tags from Texts Based on Expansion-Extraction Approach.
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245 1 0 $a Automatic Identification of Topic Tags from Texts Based on Expansion-Extraction Approach.
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500 $a Source: Dissertation Abstracts International, Volume: 75-06(E), Section: B.
500 $a Adviser: Edward A. Fox.
502 $a Thesis (Ph.D.)--Virginia Polytechnic Institute and State University, 2013.
520 $a Identifying topics of a textual document is useful for many purposes. We can organize the documents by topics in digital libraries. Then, we could browse and search for the documents with specific topics. By examining the topics of a document, we can quickly understand what the document is about. To augment the traditional manual way of topic tagging tasks, which is labor-intensive, solutions using computers have been developed.
520 $a This dissertation describes the design and development of a topic identification approach, in this case applied to disaster events. In a sense, this study represents the marriage of research analysis with an engineering effort in that it combines inspiration from Cognitive Informatics with a practical model from Information Retrieval. One of the design constraints, however, is that the Web was used as a universal knowledge source, which was essential in accessing the required information for inferring topics from texts.
520 $a Retrieving specific information of interest from such a vast information source was achieved by querying a search engine's application programming interface. Specifically, the information gathered was processed mainly by incorporating the Vector Space Model from the Information Retrieval field. As a proof of concept, we subsequently developed and evaluated a prototype tool, Xpantrac, which is able to run in a batch mode to automatically process text documents. A user interface of Xpantrac also was constructed to support an interactive semi-automatic topic tagging application, which was subsequently assessed via a usability study.
520 $a Throughout the design, development, and evaluation of these various study components, we detail how the hypotheses and research questions of this dissertation have been supported and answered. We also present that our overarching goal, which was the identification of topics in a human-comparable way without depending on a large training set or a corpus, has been achieved.
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