期刊论文

中文

计算机时代

1006-8228

2012

5

29-31,34

10.3969/j.issn.1006-8228.2012.05.010

(11C1098,07C637):湖南省教育厅科研项目 (10JJ6097,11JJ6047):湖南省自然科学基金项目 (2010GK3011,2011FJ3087):湖南省科技计划项目 :南华大学高等教育研究 (2010ZZ030):改革基金资助项目

本校为第一机构

体裁是信息检索中重要的上下文因素之一。文章阐述了体裁的含义,重点说明了数字体裁的含义、识别与描述,介绍了体裁在信息检索中的应用现状,并分析了体裁在应用中所面临的识别、标注等问题;同时指出在未来发展中,体裁作为检索目标与文档目标的表现方式之一,应独立于内容与用户当前任务进行单独匹配。为将体裁作为独立维度应用于检索系统以提高返回结果相关度,引入DCG作为评价指标。实验结果表明,该方法能有效提高检索效果。

Genre is one of the most important contextual factors in the context-driven information retrieval.The notion of genre was introduced in this paper,especially digital genre in cyber space.Expatiated current research works on the identification,description of genre,and its application in information retrieval.Furthermore,concluded some problems existed in current research,including automatic identification and annotation of genre,and proposed that genre can be used to reflect both search goal and document intent,and then serves as an unattached dimension,besides the topic dimension,to match the ...