从信息素质教育角度谈信息检索课教学的改革   总被引：9，自引：0，他引：9  

孙丽芳 《现代情报》2006,26(4):199-200,203

本文分析了国内外信息素质教育研究情况，结合广东工业大学信息检索课的教改实践，提出了信息检索课教学改革的一些建议。  相似文献   

Qualitative evaluation of automatic assignment of keywords to images     

Chih-Fong Tsai  Ken McGarry  John Tait 《Information processing & management》2006

In image retrieval, most systems lack user-centred evaluation since they are assessed by some chosen ground truth dataset. The results reported through precision and recall assessed against the ground truth are thought of as being an acceptable surrogate for the judgment of real users. Much current research focuses on automatically assigning keywords to images for enhancing retrieval effectiveness. However, evaluation methods are usually based on system-level assessment, e.g. classification accuracy based on some chosen ground truth dataset. In this paper, we present a qualitative evaluation methodology for automatic image indexing systems. The automatic indexing task is formulated as one of image annotation, or automatic metadata generation for images. The evaluation is composed of two individual methods. First, the automatic indexing annotation results are assessed by human subjects. Second, the subjects are asked to annotate some chosen images as the test set whose annotations are used as ground truth. Then, the system is tested by the test set whose annotation results are judged against the ground truth. Only one of these methods is reported for most systems on which user-centred evaluation are conducted. We believe that both methods need to be considered for full evaluation. We also provide an example evaluation of our system based on this methodology. According to this study, our proposed evaluation methodology is able to provide deeper understanding of the system’s performance.  相似文献   

网络环境下情报检索模型理论发展及评价体系研究   总被引：3，自引：0，他引：3  

焦玉英  刘伟成 《情报理论与实践》2004,27(5):523-527

相关性测量是信息检索的关键。人们提出了一系列信息检索模型以从理论与实践的角度给予解答。本文以发展的眼光探讨了各种信息检索模型的理论、特性和应用，试图从模型应用的角度建立一套用于网络环境下的信息检索模型比较和评估指标体系。  相似文献   

全文数据库Scopus的检索与利用   总被引：1，自引：0，他引：1  

江惜春 《现代情报》2005,25(9):148-149

介绍了Elsevier公司推出的能提供全文链接的文摘和索引型数据库——Scopus的概况及其检索功能和利用方法。  相似文献   

系统分析我国高校文献检索课教学——一种新型的文献检索课教学模式   总被引：1，自引：0，他引：1  

颜廷虎  孔丽娟 《现代情报》2007,27(3):195-196

本文首先论证了把文献检索教学视为一个整体、一个系统,并进行系统分析的可行性。提出一个新型的高校文献检索课教学模式,重塑文献检索课教学过程(结构)中所涉及的图书馆、专业课教师和大学生三者相互关系及其活动内容。进而从一般系统论的观点比较当前文献检索教学模式,分析新旧文献检索教学模式的强健度(robustness)。并为高校课程改革提供一个理论上的依据。  相似文献   

Sorting pupils into their next educational track: How strongly do teachers rely on data-based or intuitive processes when they make the transition decision?     

《Studies in Educational Evaluation》2021

For many years, teachers’ intuitive evaluations of pupils’ competences was considered to be a solid base for decisions; it is only recently that teachers have been expected more and more to use data. We state that insights on intuitive and data-driven approaches need to be integrated to understand and support informed, professional decisions in education. Starting from an integrated framework we studied teachers’ decision process regarding the transition of 30 pupils during their last year of primary education within a case study design. Results describe different approaches to decision-making. Some teachers greatly rely on intuitive processes when they ultimately make the decision, even if data was collected. Other teachers combine and weigh information deriving from deliberate processes of data use and from intuitive recognition before they decide. Implications for theory and practice are explained.  相似文献   

高师学生信息素质教育的理论与实践     

娜红 《唐山师范学院学报》2006,28(3):125-126

从我国高等师范教育改革的实际出发,分析了信息素质的构成及师范院校大学生信息素质教育的必要性,探讨了大学生信息素质教育的途径。  相似文献   

Ensemble learning HMM for motion recognition and retrieval by Isomap dimension reduction   总被引：1，自引：0，他引：1  

XIANG Jian WENG Jian-guang ZHUANG Yue-ting WU Fei 《浙江大学学报(A卷英文版)》2006,7(12):2063-2072

INTRODUCTION Now more and more motion capture systems are used to acquire realistic human motion data. Due to the success of the Mocap systems, realistic and highly detailed motion clips are commercially available and widely used for producing animations of human-like characters in a variety of applications, such as simu- lations, video games and animation files. Therefore an efficient motion data recognition and retrieval technique is needed to support motion data processing, such as mot…  相似文献   

基于Agent的搜索引擎个性化服务系统     

YANG Xian-feng  Hou Zhi-song 《教育技术导刊》2008,(3)

将Agent技术引入到搜索引擎个性化服务系统中,由它记录用户的个性化信息。Agent技术提供了一种完全不同的Web信息检索模式,有望使Web信息检索的效率产生一个质的飞跃。  相似文献   

信息检索新技术应用   总被引：5，自引：1，他引：5  

施晓华  黄骥 《情报科学》2005,23(8):1225-1228

互联网的迅速发展和数据库技术的不断创新，正改变着传统的信息检索技术。本文对信息检索领域的一些新技术进行了介绍，对各种技术的运用现状和存在的优缺点作了描述和分析。  相似文献