資訊檢索策略與技巧(參考版)
2024-10-15 09:07本頁面
【正文】 be willing to look at a search in more than one way. Avoid rigidity in thought and action. ? Browse samples of retrieved citations to assess relevancy. ? Browse samples of retrieved citations to generate additional search terms. ? Be heuristic, interactive. Don’t do “fast batch” searching. 36 Personal Heuristics—2/2 ? Evaluate one’s own work critically. ? Always be skeptical of search output. ? A mindless faith in controlled vocabularies is not always justified. Be critical of the adequacy of artificial languages for the representation of concepts in documents. 。 full text, abstract, title, identifier, and descriptor ? Add additional facets with AND and NOT ? Decrease term truncation ? Use more restrictive proximity operators ? Add restrictions to the formulation, ., by date of publication, type of publication, language, etc. 35 Personal Heuristics—1/2 ? Be flexible。1 資訊檢索策略與技巧 黃慕萱， Harter， Chap. 7 2 檢索策略 ? 最早為軍方用語 ? 各家看法 ? 1979， Marcia Bates，” Information Search Tactics” ? Hartly ? 如何避免找到不相關文章的方法 ? 處理找到過多或過少相關文章的可能對策 ? Palmer ? 指分區(qū)組合檢索和引用文獻滾雪球法 ? Pao ? 指布林邏輯、引用文獻及機率檢索策略 ? 檢索策略 (search strategy) ? 針對一檢索問題之通盤考量或全面性之規(guī)劃 ? 如分區(qū)組合檢索法、引用文獻滾雪球法 …. 等 ? 檢索技巧 (search heuristics) ? 為完成特定目的所採取的行動 3 Briefsearch 簡易檢索 ?最常見的檢索方式 ?快速簡單 ?fast and inexpensive ?但常是低 recall，低 precision ?適用 ?主題明確 ?想瞭解資料庫製作者所使用的敘述語和索引詞彙 ?確認書目資料 ?已知書名、作者等 4 Building Blocks Search 分區(qū)組合檢索法 ? 亦有人稱為“ block building”或“ building block” ? 檢索方式 ?將索引問題分解成數個主題層面 (facets) ?確定主題層面間的關係 ? 通常 facets間的關係為” AND”，出現” OR”或” NOT”的情況較少 ?找出可代表各主題層面的檢索詞彙 ?利用布林邏輯” OR”做聯(lián)集，以求完整性 ? 使用率最高，早期參考晤談表格常依此設計 5 Building Blocks Search Strategy1/4 1. Conduct reference interviews 2. Formulate search objectives ? High recall ? High precision ? Moderate levels of recall and precision 3. Select database(s) and search system 4. Identify major concepts or facets and their logical relationships with one another 6 Building Blocks Search Strategy2/4 5. Identify ? search strings that represent the concepts ? Words ? Fulltext phrases ? Pieces of words ? Descriptors ? Identifiers ? C
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