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SIGMOD
2004
ACM
164views Database» more  SIGMOD 2004»
14 years 10 months ago
Dynamic Plan Migration for Continuous Queries Over Data Streams
Dynamic plan migration is concerned with the on-the-fly transition from one continuous query plan to a semantically equivalent yet more efficient plan. Migration is important for ...
Yali Zhu, Elke A. Rundensteiner, George T. Heinema...
DASFAA
2010
IEEE
419views Database» more  DASFAA 2010»
14 years 5 months ago
Incremental Clustering for Trajectories
Trajectory clustering has played a crucial role in data analysis since it reveals underlying trends of moving objects. Due to their sequential nature, trajectory data are often rec...
Zhenhui Li, Jae-Gil Lee, Xiaolei Li, Jiawei Han
SSDBM
2005
IEEE
175views Database» more  SSDBM 2005»
14 years 3 months ago
Assumption-Free Anomaly Detection in Time Series
Recent advancements in sensor technology have made it possible to collect enormous amounts of data in real time. However, because of the sheer volume of data most of it will never...
Li Wei, Nitin Kumar, Venkata Nishanth Lolla, Eamon...
SIGMOD
1999
ACM
181views Database» more  SIGMOD 1999»
14 years 2 months ago
Approximate Computation of Multidimensional Aggregates of Sparse Data Using Wavelets
Computing multidimensional aggregates in high dimensions is a performance bottleneck for many OLAP applications. Obtaining the exact answer to an aggregation query can be prohibit...
Jeffrey Scott Vitter, Min Wang
ERCIMDL
2000
Springer
185views Education» more  ERCIMDL 2000»
14 years 1 months ago
CORC: Helping Libraries Take a Leading Role in the Digital Age
The OCLC Cooperative Online Resource Catalog is helping librarians thrive in the digital age. Librarians are using CORC to select, describe, maintain, and provide guided access to ...
Kay Covert