Browse by Author "Chang, Kevin C-C."

  • Li, Chengkai; Chang, Kevin C-C.; Ilyas, Ihab F. (2005-06)
    In this paper, we develop a principled framework for efficient processing of ad-hoc top-k (ranking) aggregate queries in OLAP. Such queries provide the k groups with the highest aggregates to decision makers. Essential ...

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  • Kabra, Govind; Zhang, Zhen; Chang, Kevin C-C.; Lim, Lipyeow; Wang, Min; Chang, Yuan-Chi (2006-03)
    The Web has been rapidly deepened with the prevalence of databases online. As sources proliferate, while there are often useful, alternative, and related sources for our needs, we are lacking an effective facility to explore ...

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  • Zhang, Zhen; He, Bin; Chang, Kevin C-C. (2004-11)
    The Web has been rapidly ``deepened" by myriad searchable databases online, where data are hidden behind query forms. Helping users query alternative ``deep Web" sources in the same domain (\eg, Books, Airfares) is an ...

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  • He, Bin; Chang, Kevin C-C. (2004-07)
    With the prevalence of databases on the Web, \emph{large scale} integration has become a pressing problem. As an essential task, \emph{holistic schema matching} (i.e., discovering attribute correspondences among many ...

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  • Zhang, Zhen; He, Bin; Chang, Kevin C-C. (2004-03)
    Recently, the Web has been rapidly ``deepened" with the prevalence of databases online and becomes an important frontier for data integration. On this deep Web, a significant amount of information can only be accessed as ...

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  • Li, Chengkai; Chang, Kevin C-C.; Ilyas, Ihab F.; Song, Sumin (2004-07)
    This paper introduces RankSQL, a system that provides a systematic and principled framework to support efficient evaluations of ranking (top-k) queries in relational database systems (RDBMS), by extending relational algebra ...

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  • He, Bin; Li, Chengkai; Killian, David; Patel, Mitesh; Tseng, Yuping; Chang, Kevin C-C. (2006-07)
    The Web has been rapidly ``deepened" by massive databases online: Recent surveys show that while the surface Web has linked billions of static HTML pages, a far more significant amount of information is ``hidden" in the ...

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  • Kelley, Joseph M.; Chang, Kevin C-C.; Cheng, Tao; Chuang, Shui-Lung; Davis, William (2004-11)
    With its sheer amount of information, the Web is clearly an important frontier for data mining. While Web mining must start with content on the Web, there is no effective ``search-based'' mechanism to help sifting through ...

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