The performance and capabilities of Web search engines is an important and significant area of research. Millions of people world wide use Web search engines very day. This paper reports the results of a major study examining the overlap among results retrieved by multiple Web search engines for a large set of more than 10,000 queries. Previous smaller studies have discussed a lack of overlap i...

BACKGROUND Unintentional falls are particularly prevalent among older people and constitute a public health concern. Not much is known about the implications of multifaceted intervention programs implemented in residential care settings. OBJECTIVES To evaluate the effectiveness of multifaceted intervention programs in reducing the number of falls, fallers, recurrent fallers, and injurious fal...

Introduction Though automatic information retrieval (IR) existed before World Wide Web (WWW), post-Internet era has made it indispensable. IR is sub field of computer science concerned with presenting relevant information, gathered from online information sources to users in response to search queries. Various types of IR tools have been created, solely to search information on Internet. Apart ...

The log files of MCW HealthLink web site were analyzed to study users' needs for consumer health information and get a better understanding of the health topics users are searching for, the paths users usually take to find consumer health information and the way to improve search effectiveness. Introduction HealthLink (http://healthlink.mcw.eduf), a consumer health information resource includes...

The Resource Discovery Unit at the DSTC investigates techniques for improving access to information on heterogeneous networks like the Internet. Part of our research lead to the development of HotOIL a search tool that distributes queries and collects search results from networked databases. This paper describes distributed searching as a resource discovery technique, how HotOIL implements dist...

We have explored how redundancy based techniques can be used in improving factoid question answering, definitional questions (“other”), and robust retrieval. For the factoids, we explored the meta approach: we submit the questions to the several open domain question answering systems available on the Web and applied our redundancy-based triangulation algorithm to analyze their outputs in order ...

The longevity of printed guides to resources on the web is a topic of some concern to all librarians. This paper attempts to determine whether guides created by specialist librarians perform better than randomly assembled lists of resources (assembled solely for the purpose of web studies), commercially created guides (‘Best of the web’-type publications), and guides prepared by specialists in ...