資訊檢索策略與技巧(編輯修改稿)
2024-11-16 09:07 本頁面
【文章內容簡介】 AND C (A AND B) OR (A AND C) OR (B AND C) 17 Pairwise Facets—3/3 Facet 1 Facet 2 Facet 3 Solution Set B Solution Set A Sample: A doctoral student wants a high recall bibliography prepared on the relationship between facial musculature and the physiological (autonomic) responding of emotions, ., fear. Solution Set C FINAL SOLUTION SET: A OR B OR C AND AND AND 18 Citation Pearl Growing ? 引用文獻滾雪球法 ?以 high precision 為目的 ? 由 100%precision（相關的文章），反推追求 recall ? 不斷從已知相關的文獻中，獲取檢索所需的descriptors、 identifiers 、 words，重新進行檢索 ? 適用情形 ?資料庫無索引典或詞彙集 ?新興學科 ? 常需重複多次檢索，不適於初學者 19 Other facet strategies ? Multiple Briefsearch ?利用不同的 database，盡量取得 high recall ? Interactive Scanning ? most timeconsuming and interactive ?如使用 classification codes, natural language ? Implied Concepts ?掌握隱含性概念，視資料庫之主題性質，選用不同詞彙 ?例： possible health hazards from foods cooked using microwave ovens 20 Citation indexing strategies ? 利用引用 (citing)與被引用 (cited)文獻之間的關係，建構檢索策略 ? Offer highly interdisciplinary and multidisciplinary approaches to online searching ? 檢索策略 ? Cited publication、 Cited Author、 Cocited Authors ?國科會人文學研究中心人文學引用文獻資料庫（ THCI） 21 Nonsubject, fact, and multiple database searching ? Nonsubject searching ?Document type、 year of publication、 language、author、 corporate source ?doublelimiting ? Fact searching ?Search for a known item ? Multiple database searching ?注意收錄欄位和控制語言用法 22 檢索技巧 (Heuristics) ? Language Heuristics ? Command Language, Database and File Structure Heuristics ? Recall and Precision Heuristics ?Heuristics for Increasing Recall ?Heuristics for Increasing Precision ? Personal Heuristics 23 Language Heuristics—1/2 ? 當有下列情形，應使用自然語言檢索 ? One or more of the concepts of interest involves a subtle nuance of meaning ? One or more of the concepts of interest is highly specific ? One or more of the concepts is relatively new and appropriate terms in the controlled vocabulary don not exist ? A highly prehensive search is desired (high recall) ?The literature to be searched is “soft” 24 Language Heuristics—2/2 ?當有下列情形，應使用控制詞彙檢索 ?The concepts of interest
教學課件相關推薦
鄂ICP備17016276號-1