网络社区“人肉搜索”:自组织的生产与道德自律

本文通过对以猫扑社区为主的人肉搜索系统发展历程和重大事件的分析,认为人肉搜索具有自组织特征,其自生长、自适应的历程表明它能够在公权力的尊重和引导下通过自我净化实现道德自律。     

搜索引擎搜索结果的评价技术

搜索引擎根据用户查询在自己的索引数据库中进行查找,并根据相关性分析将查询结果返回给用户。本文就传统信息检索系统的性能效率评价技术,针对Internet的特点,对搜索引擎搜索结果的评价进行了讨论。     

浅谈《阅微草堂笔记》与《搜神记》中死而复生故事的异同

死而复生是琐闻异事小说常有的文学主题,《搜神记》与《阅微草堂笔记》是中国古代两部不容忽视的志怪小说集,这两部小说中都有大量死而复生的故事,其主题既有相同的地方,也有较大的区别．相同之处表现在因情复生和误死复生上,反映了当时社会环境和社会制度对人类的辖制;不同之处主要是它们的创作主旨有较大的区别,而且《阅微草堂笔记》在很大程度上丰富并超越了《搜神记》。     

Facing and bridging gaps in Web searching

Drawing on the ideas of the Sense-Making approach, the ways in which people face and bridge gaps in Web searching are analyzed. The empirical study is based on videotaped Web searches conducted by seven participants. Altogether 11 gaps and 13 search tactics of various types were identified. The gaps faced by the searchers originated from three major factors: problematic content of information, insufficient search competence and problems caused by the search environment. Of individual gaps, no relevant material available, inaccessible content and confusion were most frequent. Of the search tactics used in gap-bridging, following links and activating the Back button were most popular. Gaps related to the problematic content of information led the informants to redirect the search to find Web pages that focus better on the search topic. If the movement was stopped by insufficient search competence, the searchers tended to return to material that was familiar from earlier use contexts in order to regain control of the search process. Alternatively, they tried to specify the search terms. In cases where the search was interrupted by technical problems or other factors originating from the search system, gap-bridging aimed at returning to familiar and technically reliable links. The Sense-Making theory provides relevant conceptual tools to approach the dynamic and discontinuous nature of Web searching in terms of gap-facing and gap-bridging. The concept of gap-facing enables a context-sensitive analysis of the ways in which Web search processes may be stopped. Gap-bridging indicates a general level motive to find alternative ways to continue searching.     

个性化元搜索引擎的研究

针对现有搜索引擎的局限性和当前用户的个性化需求,以用户兴趣模型为基础,对个性化元搜索引擎的基本原理和结构、方法及关键技术进行了研究,并在此基础上提出了用户个性化元搜索引擎的简单实现。     

基于数据可重用的运动估计低功耗VLSI实现

块匹配全局搜索算法(FSBM)是效果最好的运动估计算法,但是由于它庞大的运算量限制了它的应用,特别是在数字多媒体终端等对实时性和功耗要求比较高的应用场合。针对这种情况,作者提出的处理结构结合了数据重用和低功耗技术,使得该结构的功耗比传统的全局搜索结构降低50%的功耗,数据可重用性大为提高,确保了每个数据只需被读取一次,这样就确保了较少的I/O端口数和片上内存,同时实现100%的硬件资源利用率。     

SAGA：一种新的船舶搁浅预警模型

随着船舶自动识别系统(Automatic Identification System,AIS)和电子海图信息与显示系统(Electronic Chart Displayand Information System,ECDIS)的出现及普及,使船舶交通管理系统(Ves-sel Traffic Service,VTS)对其辖区的航行船舶进行自动搁浅预警成为可能.针对预警自动化水平较低这一现状,提出搁浅预警(Search Area for Grounding A lert,SAGA)模型,通过判断船舶SAGA领域内最小水深是否满足安全要求来实现船舶搁浅预警.