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EDBT
2000
ACM
13 years 9 months ago
Temporal View Self-Maintenance
Warehouse view self-maintenance refers to maintaining materialized views at a data warehouse without accessing source data. Self-maintenance has been studied for nontemporal views...
Jun Yang 0001, Jennifer Widom
KDD
1999
ACM
220views Data Mining» more  KDD 1999»
13 years 10 months ago
Efficient Mining of Emerging Patterns: Discovering Trends and Differences
We introduce a new kind of patterns, called emerging patterns (EPs), for knowledge discovery from databases. EPs are defined as itemsets whose supports increase significantly from...
Guozhu Dong, Jinyan Li
KDD
2004
ACM
209views Data Mining» more  KDD 2004»
14 years 6 months ago
Tracking dynamics of topic trends using a finite mixture model
In a wide range of business areas dealing with text data streams, including CRM, knowledge management, and Web monitoring services, it is an important issue to discover topic tren...
Satoshi Morinaga, Kenji Yamanishi
KDD
2007
ACM
167views Data Mining» more  KDD 2007»
14 years 6 months ago
Generalized component analysis for text with heterogeneous attributes
We present a class of richly structured, undirected hidden variable models suitable for simultaneously modeling text along with other attributes encoded in different modalities. O...
Xuerui Wang, Chris Pal, Andrew McCallum
VLDB
1987
ACM
78views Database» more  VLDB 1987»
13 years 9 months ago
Measured Performance of Time Interval Concurrency Control Techniques
This paper reports on an implementation of Bayer's Time Interval concurrency control method and compares it to the performance of a conventional timestamp method. The impleme...
Jerre D. Noe, David B. Wagner