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ICDE
1999
IEEE
106views Database» more  ICDE 1999»
14 years 11 months ago
Processing Operations with Restrictions in RDBMS without External Sorting: The Tetris Algorithm
Most operations of the relational algebra or SQL require a sorted stream of tuples for efficient processing. Therefore, processing complex relational queries relies on efficient a...
Volker Markl, Martin Zirkel, Rudolf Bayer
IDEAS
2000
IEEE
96views Database» more  IDEAS 2000»
14 years 2 months ago
A Cost Function for Uniformly Partitioned UB-Trees
Most operations of the relational algebra or SQL - like projection with duplicate elimination, join, ordering, group by and aggregations - are efficiently processed using a sorted...
Volker Markl, Rudolf Bayer
SIGMOD
2009
ACM
184views Database» more  SIGMOD 2009»
14 years 10 months ago
Minimizing the communication cost for continuous skyline maintenance
Existing work in the skyline literature focuses on optimizing the processing cost. This paper aims at minimization of the communication overhead in client-server architectures, wh...
Zhenjie Zhang, Reynold Cheng, Dimitris Papadias, A...
ICDM
2006
IEEE
193views Data Mining» more  ICDM 2006»
14 years 4 months ago
Local Correlation Tracking in Time Series
We address the problem of capturing and tracking local correlations among time evolving time series. Our approach is based on comparing the local auto-covariance matrices (via the...
Spiros Papadimitriou, Jimeng Sun, Philip S. Yu
ICCD
1991
IEEE
65views Hardware» more  ICCD 1991»
14 years 1 months ago
Self-Timed Logic Using Current-Sensing Completion Detection (CSCD)
This article proposes a completion-detection method for efficiently implementing Boolean functions as self-timed logic structures. Current-Sensing Completion Detection, CSCD, allow...
Mark E. Dean, David L. Dill, Mark Horowitz