Information Retrieval Demo Program 1 組別 : 第一組組員 : 陳文鏘黃慶順鄒修銘.

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Presentation transcript:

Information Retrieval Demo Program 1 組別 : 第一組組員 : 陳文鏘黃慶順鄒修銘

Outline  Program Architecture  Platform  Indexing Method  Time & Space  Search Time

Program Architecture …. Documents Parser 1.Tokens 2.Stop words Stopwords.txt Stemming Pre- index DBMS (Inverted File) JSP Query Retrieve

Outline  Program Architecture  Platform  Indexing Method  Time & Space  Search Time

Platform  CPU : Intel Celeron 500  RAM: 448MB  OS: Windows 2000  Language: Java (JDK 1.3)  Web Server: Orion A J2EE application server  DBMS:MSSQL 2000

Outline  Program Architecture  Platform  Indexing Method  Time & Space  Search Time

Indexing Method  Inverted File in DBMS Index termDoc. Number informationd2, d5, d11,d63… retrievald2, d5,d8,d14….. …… DBMS

Outline  Program Architecture  Platform  Indexing Method  Time & Space  Search Time

Time & Space  Building Time  12 hours and 54 mins  Building Space  original docs: 161 MB  inverted file in DBMS: 595 MB

Outline  Program Architecture  Platform  Indexing Method  Time & Space  Search Time

Search Time  Using Web interface (Java Servlet)  5~40 secs