复杂报表的高效查询     

陈建辉  黄朝辉 《宜宾学院学报》2008,8(6)

复杂报表由于要对系统中大量数据进行查询、统计、分析和汇总,需要占用较多的时间,如果没有进行优化,那响应的时间将是无法接受的。而减少访问数据表的次数,是提高报袁旷生效率的重要方法。结合前台开发工具和后台数据库的特性,恰当设置分组,利用数组保存报表设置参数和中间结果,巧妙利用数据库的特色函数,设计出高效查询的程序段,以达到访问数据表一次就完成统计任务的目的。  相似文献   

Knowledge based collection selection for distributed information retrieval     

Baoli Han  Ling Chen  Xiaoxue Tian 《Information processing & management》2018,54(1):116-128

  相似文献   

Acquiring knowledge about human goals from Search Query Logs     

Markus Strohmaier  Mark Kröll 《Information processing & management》2012,48(1):63-82

A better understanding of what motivates humans to perform certain actions is relevant for a range of research challenges including generating action sequences that implement goals (planning). A first step in this direction is the task of acquiring knowledge about human goals. In this work, we investigate whether Search Query Logs are a viable source for extracting expressions of human goals. For this purpose, we devise an algorithm that automatically identifies queries containing explicit goals such as find home to rent in Florida. Evaluation results of our algorithm achieve useful precision/recall values. We apply the classification algorithm to two large Search Query Logs, recorded by AOL and Microsoft Research in 2006, and obtain a set of ∼110,000 queries containing explicit goals. To study the nature of human goals in Search Query Logs, we conduct qualitative, quantitative and comparative analyses. Our findings suggest that Search Query Logs (i) represent a viable source for extracting human goals, (ii) contain a great variety of human goals and (iii) contain human goals that can be employed to complement existing commonsense knowledge bases. Finally, we illustrate the potential of goal knowledge for addressing following application scenario: to refine and extend commonsense knowledge with human goals from Search Query Logs. This work is relevant for (i) knowledge engineers interested in acquiring human goals from textual corpora and constructing knowledge bases of human goals (ii) researchers interested in studying characteristics of human goals in Search Query Logs.  相似文献   

基于JQuery的自动完成功能的实现     

王波  王瀚波 《三门峡职业技术学院学报》2010,9(3):102-106

当客户在利用Goolge或Baidu搜索引擎在网上搜索信息时,自动完成功能给大家带来了很大的便利。随着Ajax技术的迅速发展,自动完成功能在不同的框架中都得到了一定程度的实现。以某精密机械有限公司ERP系统的制定年业务计划模块为例,详细介绍通过JQuery-aucomplete插件和基于文本的数据交换格式JSON实现基于JQuery的自动完成功能的方法。  相似文献   

Disambiguated query suggestions and personalized content-similarity and novelty ranking of clustered results to optimize web searches     

Gloria Bordogna  Alessandro Campi  Giuseppe Psaila  Stefania Ronchi 《Information processing & management》2012

In this paper, we face the so called “ranked list problem” of Web searches, that occurs when users submit short requests to search engines. Generally, as a consequence of terms’ ambiguity and polysemy, users engage long cycles of query reformulation in an attempt to capture relevant information in the top ranked results.  相似文献   

User k-anonymity for privacy preserving data mining of query logs     

Guillermo Navarro-Arribas  Vicenç Torra  Arnau Erola  Jordi Castellà-Roca 《Information processing & management》2012

The anonymization of query logs is an important process that needs to be performed prior to the publication of such sensitive data. This ensures the anonymity of the users in the logs, a problem that has been already found in released logs from well known companies. This paper presents the anonymization of query logs using microaggregation. Our proposal ensures the k-anonymity of the users in the query log, while preserving its utility. We provide the evaluation of our proposal in real query logs, showing the privacy and utility achieved, as well as providing estimations for the use of such data in data mining processes based on clustering.  相似文献   

How doctors search: A study of query behaviour and the impact on search results     

Marianne Lykke  Susan Price  Lois Delcambre 《Information processing & management》2012

Professional, workplace searching is different from general searching, because it is typically limited to specific facets and targeted to a single answer. We have developed the semantic component (SC) model, which is a search feature that allows searchers to structure and specify the search to context-specific aspects of the main topic of the documents. We have tested the model in an interactive searching study with family doctors with the purpose to explore doctors’ querying behaviour, how they applied the means for specifying a search, and how these features contributed to the search outcome. In general, the doctors were capable of exploiting system features and search tactics during the searching. Most searchers produced well-structured queries that contained appropriate search facets. When searches failed it was not due to query structure or query length. Failures were mostly caused by the well-known vocabulary problem. The problem was exacerbated by using certain filters as Boolean filters. The best working queries were structured into 2–3 main facets out of 3–5 possible search facets, and expressed with terms reflecting the focal view of the search task. The findings at the same time support and extend previous results about query structure and exhaustivity showing the importance of selecting central search facets and express them from the perspective of search task. The SC model was applied in the highest performing queries except one. The findings suggest that the model might be a helpful feature to structure queries into central, appropriate facets, and in returning highly relevant documents.  相似文献   

Web环境下的个性化信息检索技术   总被引：5，自引：0，他引：5  

崔建海  程妮  王军 《现代图书情报技术》2005,21(9):45-49

对当前网络环境下应用的若干典型的个性化信息检索技术进行了研究和分析。介绍了个性化信息检索的一般模型，从四个不同的角度对各种个性化检索技术做了分类，列举了主要的个性化检索个案，描述了个性化检索系统的核心模块，并简单介绍了如何提高个性化检索的效率。  相似文献   

DNS系统在校园网中的应用研究     

陈建和  白宝钢 《河西学院学报》2006,22(2):87-90

DNS在Internet互联网的发展过程中起了重大的推动作用,成为网络正常运行的重要条件.阐述了DNS的工作原理,提出了它在校园网中的几个应用问题,同时结合我们的工作经验,通过一个实例说明了校园网DNS系统的建立,最后对DNS查询作出了分析研究.  相似文献   

The influence of personalization on tag query length in social media search     

M. Clements  A.P. de Vries  M.J.T. Reinders 《Information processing & management》2010

Social content systems contain enormous collections of unstructured user-generated content, annotated by the collaborative effort of regular Internet users. Tag-clouds have become popular interfaces that allow users to query the database of these systems by clicking relevant terms. However, these single click queries are often not expressive enough to effectively retrieve the desired content. Users have to use multiple clicks or type longer queries to satisfy their information need.  相似文献