Recent work has demonstrated the effectiveness of the wavelet decomposition in reducing large amounts of data to compact sets of wavelet coefficients (termed "wavelet synopse...
The prevalent use of XML highlights the need for a generic, flexible access-control mechanism for XML documents that supports efficient and secure query access, without revealing ...
Approximate query answering systems provide very fast alternatives to OLAP systems when applications are tolerant to small errors in query answers. Current sampling-based approach...
This paper presents SHIRI-Querying 3 , an approach for semantic search on semi-structured documents. We propose a solution to tackle incompleteness and imprecision of semantic anno...
We study the problem of answering XPATH queries using multiple materialized views. Despite the efforts on answering queries using single materialized view, answering queries using ...
Byron Choi, Jeffrey Xu Yu, Kam-Fai Wong, M. Tamer ...