臺灣博碩士論文加值系統

文件檢索的技術行之有年，現今已廣泛地運用在各種線上文件檢索系統中。大部份的檢索工具是依據使用者輸入的查詢字串進行全文比對，或者將查詢字串做過部份處理之後再行比對文章。目前，已有為數眾多的研究者致力於發展文章分類、相關文章比對、文件相似度衡量方法及權重計算模型，更有許多改良過的方法實際應用於檢索系統中，逐步改善檢索效果與效率。
於本論文中，我們以現行著名之SCI/SSCI期刊文獻資料庫檢索工具為對象，根據此類文章之特色額外發展文章相似度比對方法。本研究專注於該檢索工具所擁有的標題、摘要、關鍵字及引用文獻，共四項不同特色的重要屬性，並利用著名之向量空間模式和TFIDF公式，計算文章向量的相似度。由於四項屬性之權重大小將影響兩兩文章之整體相似度，我們輔以倒傳遞類神經網路技術，建立屬性權重分配與兩兩文章之間的總相似度值之關係模式。而為了驗證ANN模組之成效，以及本文提出的文章比對方法與傳統比對方法之差異，本論文實際建立真實的期刊文章資料庫，並按照文章比對流程進行研究實作。最後則設計實驗，邀請實驗受測者測試文章比對之效果。
實驗結果顯示，我們所提出的文章比對方法，相較傳統方法而言，確實能大幅改善相似度比對效果。同時，我們也驗證了ANN模組確實帶來更佳的成效。
在SCI/SSCI檢索工具中，本研究期望能在保留標準欄位查詢功能之前提下，額外增加本論文所發展之文章相似度比對方法，藉以提昇檢索工具之彈性及實用性，協助研究學者或一般使用者更有效地查詢資料庫內相關文章。

第一章 緒論 1
第一節 研究背景 1
第二節 研究動機 2
第三節 研究目的 3
第四節 研究流程 4
第五節 論文架構 5
第二章 文獻探討與相關技術 6
第一節 文章前處理 6
第二節 文章比對 12
第三節 相關技術與方法 17
第三章 文章比對方法 24
第一節 文章比對流程概述 24
第二節 文章前處理 26
第三節 建構文章向量及引用文獻列表 29
第四節 處理新文章 41
第五節 文章相似度比對 43
第四章 實證評估 48
第一節 實驗發展工具與環境 48
第二節 建立文章資料庫 50
第三節 實驗設計及實驗流程 51
第四節 評估準則 58
第五節 實驗結果及分析 60
第五章 結論與未來展望 67
第一節 研究結論與貢獻 67
第二節 研究限制 67
第三節 未來展望 69
參考文獻 70
附錄A：STEMMING－PORTER’S ALGORITHM 75

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