WorldCat Identities

Yan, Tak W.

Works: 4 works in 6 publications in 1 language and 18 library holdings
Roles: Author
Publication Timeline
Most widely held works by Tak W Yan
Index structures for selective dissemination of information by Tak W Yan( Book )

1 edition published in 1992 in English and held by 8 WorldCat member libraries worldwide

Abstract: "The number, size, and user population of bibliographic and full text document databases are rapidly growing. With a high document arrival rate, it becomes essential for users of such databases to have access to the very latest documents; yet the high document arrival rate also makes it difficult for the users to keep themselves updated. It is desirable to allow users to issue queries that are constantly evaluated, called standing orders, so that they will be automatically informed of new additions that may be of interest. Such service is traditionally called Selective Dissemination of Information. The huge number of users and the timeliness requirement of the service pose a challenge
Index structures for information filtering under the vector space model by T. W Yan( Book )

3 editions published in 1993 in English and held by 6 WorldCat member libraries worldwide

We apply the idea of the standard inverted index to index user profiles. We devise an alternative to the standard inverted index, in which we, instead of indexing every term in a profile, select only the significant ones to index. We evaluate their performance and show that the indexing methods require orders of magnitude fewer I/Os to process a document than when no index is used. We also show that the proposed alternative performs better in terms of I/O and CPU processing time in many cases."
Unlimiting the library by Steven G Watkins( Visual )

1 edition published in 1995 in English and held by 2 WorldCat member libraries worldwide

Lucy Siefert Wegner discusses copyright in the digital age, followed by Clifford A. Lynch discussing standards for library information networks, information storage and retrieval systems, and computer network protocols (Z39.50)
The sift information dissemination system by Tak W Yan( )

1 edition published in 1999 in English and held by 1 WorldCat member library worldwide

Audience Level
Audience Level
  Kids General Special  
Audience level: 0.76 (from 0.49 for The sift i ... to 0.83 for Index stru ...)