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» Efficient Aggregate Computation over Data Streams
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JIIS
2008
133views more  JIIS 2008»
13 years 10 months ago
Maintaining frequent closed itemsets over a sliding window
In this paper, we study the incremental update of Frequent Closed Itemsets (FCIs) over a sliding window in a high-speed data stream. We propose the notion of semi-FCIs, which is to...
James Cheng, Yiping Ke, Wilfred Ng
PERCOM
2008
ACM
14 years 9 months ago
Data-centric middleware for context-aware pervasive computing
The complexity of developing and deploying context-aware pervasive-computing applications calls for distributed software infrastructures that assist applications to collect, aggre...
Guanling Chen, Ming Li, David Kotz
KDD
2007
ACM
165views Data Mining» more  KDD 2007»
14 years 10 months ago
Efficient and effective explanation of change in hierarchical summaries
Dimension attributes in data warehouses are typically hierarchical (e.g., geographic locations in sales data, URLs in Web traffic logs). OLAP tools are used to summarize the measu...
Deepak Agarwal, Dhiman Barman, Dimitrios Gunopulos...
DOLAP
2004
ACM
14 years 3 months ago
Aggregate queries in peer-to-peer OLAP
A peer-to-peer (P2P) data management system consists essentially of a network of peer systems, each maintaining full autonomy over its own data resources. Data exchange between pe...
Mauricio Minuto Espil, Alejandro A. Vaisman
ICMCS
2006
IEEE
170views Multimedia» more  ICMCS 2006»
14 years 4 months ago
Bit-Stream Switching in Multiple Bit-Rate Video Streaming using Wyner-Ziv Coding
It has been commonly recognized that multiple bit-rate (MBR) encoding provides a concise method for video streaming over bandwidth-fluctuant networks. The key problem of the MBR t...
Wen Sun, Yan Lu, Feng Wu