| Author: | Chan, Shui-kuen |
| Title: | A signature-based information retrieval system for office use |
| Degree: | M.Sc. |
| Year: | 1998 |
| Subject: | Text processing (Computer science) Information storage and retrieval systems Chinese language -- Data processing Electronic data processing Office practice -- Automation Hong Kong Polytechnic University -- Dissertations |
| Department: | Multi-disciplinary Studies Department of Computing |
| Pages: | iv, 98 leaves : ill. ; 30 cm |
| Language: | English |
| Abstract: | Office documents are produced everyday. Manual filing and searching become labor intensive and slow. Information retrieval offers the timely access of a large set of documents. In Hong Kong, documents are usually written in English and Chinese. This dissertation aims to extend the use of variable bit-block compression signature method, which is good to install for office use, to index and to search English/Chinese documents. In our proposed system, signatures for each documents are generated through a batch process including three sub-processes. First, a file list containing all accessible text files and their relevant information is generated. Secondly, by scanning the file list, a library file containing all terms in all accessible text files is created. Thirdly, by scanning the file list and the library file, a signature file containing all signatures for all accessible text files is generated. After signature generation, office staff can retrieve their relevant documents by submitting a query in the web page. The query is passed to a signature retrieval program through the Common Gateway Interface (CGI) specification. The signature retrieval program scans through the signature file and returns relevant documents through another web page. Besides, queries can be written as boolean expression based on conjunction and disjunction. Based on a small test queries (~= 30 cases), the average recall and precision are 1 and 0.933 respectively. |
| Rights: | All rights reserved |
| Access: | restricted access |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| b14369436.pdf | For All Users (off-campus access for PolyU Staff & Students only) | 2.59 MB | Adobe PDF | View/Open |
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