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組員 : 資工 4A 87068800 王俊傑 資工 4B 87070300 陳國富 資工 4B 87070600 夏希璿

IR. 組員 : 資工 4A 87068800 王俊傑 資工 4B 87070300 陳國富 資工 4B 87070600 夏希璿. 程式開發環境. Web Interface : 1.Web Server : Internet Information Services 2.Web Script Language : PHP Indexing 程式 : Perl script language 使用 Database:mysql. 程式架構和流程. ‧Indexing. Indexing. 去除 stop word.

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組員 : 資工 4A 87068800 王俊傑 資工 4B 87070300 陳國富 資工 4B 87070600 夏希璿

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  1. IR 組員:資工4A 87068800 王俊傑 資工4B 87070300 陳國富 資工4B 87070600 夏希璿

  2. 程式開發環境 Web Interface : 1.Web Server : Internet Information Services 2.Web Script Language : PHP Indexing程式: Perl script language 使用Database:mysql

  3. 程式架構和流程 ‧Indexing Indexing 去除stop word Document ‧Query Query 存放 Index的 DateBase 送出查詢 Web-InterFace 送回結果 Result

  4. Indexing步驟 1.將檔案讀入，去掉stop word (程式執行前 以手動輸入)。 2.將單字,及其出現的文章存入Database。 3.先將一半的檔案以步驟1,2做處理。 4.將不滿足 N/Ni >10的單自從Database中 去除。 N :文章總數 Ni:某一單字出現過的文章數目

  5. Indexing步驟 5.重複步驟1,2,3，對剩下的檔案進行處理 6.然後,以 dfi=dfi*(1+log(N/Ni)) dfi (若Ni=0,即該單字未出現) 若dfi > 該篇文章的總單字數/100 則將該單字取為index dfi:只某一單字在單一篇文章出現的次數

  6. Indexing執行時間 Indexing : 一篇文章約5~10分鐘 (包含去除stop word,和select index term 的時間) searching: 輸入Query為單一個單字時 searching 時間約 5~10 sec 輸入兩個單字時, searching time大約為30 sec

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