網路資訊尋獲與再尋獲之檢索歷程研究

The Study of Search Session for Finding and Re-finding Information on the Web

江信昱

資訊尋獲 ； 資訊再尋獲 ； 檢索歷程 ； 檢索策略 ； Information Finding ； Information Re-finding ； Search Session ； Search Strategy

臺灣師範大學圖書資訊學研究所學位論文

2009年

碩士

卜小蝶

繁體中文

隨著網路資源迅速成長，利用搜尋引擎檢索網路資源，也成為使用者最有利的檢索工具。從個人資訊管理觀點來看，使用者常有再取用及再利用資訊之需求，其中如何再尋獲個人資訊是許多人深感困擾的問題。過去已有不少研究針對搜尋引擎、傳統資訊檢索系統及OPAC檢索系統等探討檢索行為差異，網路資訊再尋獲（re-finding）是一常見的資訊需求及難題，相較研究如何搜尋或尋獲資訊，其較少受到研究關注。因此，本研究嘗試以兩階段實驗法、檢索記錄分析法、觀察法、訪談及問卷調查法等多元方法，就使用者在網路瀏覽器使用、網站/網頁取用途徑、檢索詞彙、檢索語句及檢索歷程等面向，分析比較資訊尋獲與資訊再尋獲之檢索行為特性。研究結果顯示：（1）搜尋引擎為資訊尋獲與資訊再尋獲之主要工具，其次為直接取用URL或網址，顯示使用者會直接取用平日熟悉的資源當作檢索起點，而使用檢索歷史為資訊再尋獲階段之重要取用方式之一；（2）分析兩階段實驗之檢索歷程記錄，與資訊尋獲階段相比，使用者再尋獲資訊之時間略為降低，但所花費之認知心力則有上升情形；（3）兩階段實驗之檢索策略、技巧運用、及詞彙選用相似，但其檢索路徑不同；（4）不同任務類型之檢索成效有所差異，接觸次數與熟悉度越高之檢索任務，有較好的檢索成效。此外，研究發現路徑型任務之檢索表現優於其他三類任務，而精確型任務之檢索困難度最高。最後，本研究提供一些建議，包含網路資訊檢索系統之改善、網路資訊素養及後續研究建議之參考。

The rapidly increasing amount of internet resources has made search engines that are one of the most important tools for searching and accessing internet resources. Some studies have documented that people have a variety of needs to re-access and reuse information, but organizing and re-finding web information can be a problem for many users from the personal information management point of view. The majority of studies concerning on-line searching can be categorized as focusing on search engines, traditional information retrieval (IR) systems or online public access catalogue (OPAC) systems, re-finding electronic information is a common information need and problem, yet it has received less study than the research of how to search or find information. Therefore, the study attempts to sum up and compare search behavior characteristics in information finding and information re-finding by users’ web browsers use, web sites/web pages access, search terms, search queries, and search sessions level. The methods include two experimental sessions, scheduled about a week apart, search log analysis, observation, interview, and questionnaire. The results indicate that: (1) the use of search engines is a main method to find and re-find information, next to directly accessing a URL or web address, which showed participants often go directly to known resources on the web to start their searches. In addition to another way, the use of search history is a useful method when re-finding information. (2) Participants’ cost of time is decreasing slightly, but the effort of interaction is increasing when re-finding information through the analysis of search log in two sessions. (3) Finding and re-finding information does have differences, especially for search strategies, search tactics, terms selections are similarity, but the search paths of re-finding are differ from information finding. (4) For many tasks, the effectiveness of search is a discrepancy in the two sessions. The task with high frequency and high familiarity has a better performance. Beside, path tasks are all tasks that participants could easily to execute, and re-finding for exact tasks is perceived as more difficult and longer than information finding. Finally, the study provides some suggestions on improving the networked information retrieval systems, network information literacy and benefit further research.

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