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Journal of Library and Information Science
Journal Prestige (SJR): 0.14
Number of Followers: 546  

  This is an Open Access Journal Open Access journal
ISSN (Print) 0363-3640
Published by National Taiwan Normal University Homepage  [1 journal]
  • A Study on the Relevance Criteria for Journalistic Images

    • Authors: 洪彩圓 Tsai-Youn Hung
      Abstract: Selecting and editing images for news are critical components in photojournalism professionals’ daily work routines. The aim of this study is to collect empirical data on photojournalism professionals’ image-searching behavior on relevance judgments. A multimethod research design for data collection was applied, including pretest questionnaires, task scenarios and posttest interviews. The study involves 30 participants from newspaper and magazine companies in New Jersey, New York, and Philadelphia. The results identify a total of 37 categories of relevance criteria applied by the participants when determining the relevance of images in the specific, general and subjective image searches. The findings show that there is a difference in using relevance criteria among the three searches. In the specific search, the participants relied more on visual content of the photos; in the general search, the participants needed to rely on personal feelings; while in the subjective search, the participants were more likely to use their knowledge and experience. It indicates that the process of relevance decision-making is situational. The results suggest that a more effective and efficient relevance feedback mechanism that enables a user to interact with the system and rate the relevance of the retrieved images during the retrieval process is necessary.
      PubDate: 2019-02-22
      Issue No: Vol. 44 (2019)
       
  • 手寫數字辨識模型之比較研究

    • Authors: 黃信瑜 Hsin -Yu Huang , 蔡幸蓁 Hsine-Jen Tsai
      Abstract: 本研究主要目的為比較兩種不同的演算法對手寫數字識別之表現。本研究採用支援向量機(SVM)及類神經網路(ANN)作為比較的項目,並且在資料集的處理上加以上主成分分析(PCA)與OpenCV 為基礎的資料預處理。本實驗基於支援向量機、類神經網路、主成分分析以及OpenCV建構了一個手寫數字辨識模型(Hand-written Digits Recognition Model),並用此模型所訓練出來的演算法分類器設計一系統來實測實際手寫的數字影像。實驗的結果為使用支援向量機的準確率優於類神經網路,而在使用了主成分分析將資料集進行預處理降維後,在準確率不變的情況下,大幅的減少了其運算的時間。
      PubDate: 2019-02-22
      Issue No: Vol. 44 (2019)
       

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    • Authors: 古敏君 Min-Chun Ku
      Abstract: 本研究以淡江大學全英語授課之課程為對象,調查教師使用之文體、評鑑文體所採取之標準與使用文體來執行任務之間的關聯。先以質性引文分析來分析研究參與者之教材,辨別出其使用之文件及這些文件之文體,再以半結構式訪談來蒐集有關教師如何使用不同的文件及其評鑑標準之資料。資料分析則先以質性內容分析來從訪談稿中辨析出任務與評鑑標準,再以共同出現分析來發掘三者之關聯。共有十七名各學院領域的教師,貢獻十九門大學與碩士課程。研究結果發現不同的文體具不同的資訊特質,教師評鑑文體所採取的標準反映了文體之資訊特質,這些特質也讓教師得以執行不同的任務,使文體發揮教學功能。
      PubDate: 2019-02-22
      Issue No: Vol. 44 (2019)
       

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    • Authors: 邱子恒 Tzu-heng Chiu
      Abstract: 本文以國家圖書館暑期青年學者養成營為個案,介紹此一全國性高中生資訊素養營隊成立的緣起、課程架構、進行狀況,並報導該營隊之學習成效。研究者對第一期學員進行前測、後測、六個月追蹤等三次學習成果問卷調查,以量測該營隊教學目標之達成度及持續性。前測數據顯示,學員自評8 項研究知能的分數在沒有上課之前普遍不佳;營隊結業時的後測顯示所有項目都有提升,說明學員認為自己在8 項研究知能上的能力都大有進步;半年之後的追蹤問卷發現,各項知能的自評分數比後測時略為降低,但仍都高於前測,證明營隊課程學習成果的持續性。研究結果可供各類型圖書館日後規劃舉辦青年學子資訊素養培訓課程之參考。
      PubDate: 2019-02-22
      Issue No: Vol. 44 (2019)
       
 
 
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