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SAC
2004
ACM
14 years 4 months ago
A new algorithm for gap constrained sequence mining
The sequence mining problem consists in finding frequent sequential patterns in a database of time-stamped events. Several application domains require limiting the maximum tempor...
Salvatore Orlando, Raffaele Perego, Claudio Silves...
RTCSA
2003
IEEE
14 years 4 months ago
Towards Aspectual Component-Based Development of Real-Time Systems
Increasing complexity of real-time systems, and demands for enabling their configurability and tailorability are strong motivations for applying new software engineering principle...
Aleksandra Tesanovic, Dag Nyström, Jörge...
GIS
2006
ACM
13 years 10 months ago
Efficient integration of road maps
Integration of two road maps is finding a matching between pairs of objects that represent, in the maps, the same realworld road. Several algorithms were proposed in the past for ...
Eliyahu Safra, Yaron Kanza, Yehoshua Sagiv, Yerach...
VLDB
2002
ACM
98views Database» more  VLDB 2002»
13 years 10 months ago
Processing Star Queries on Hierarchically-Clustered Fact Tables
Star queries are the most prevalent kind of queries in data warehousing, OLAP and business intelligence applications. Thus, there is an imperative need for efficiently processing ...
Nikos Karayannidis, Aris Tsois, Timos K. Sellis, R...
SAC
2008
ACM
13 years 10 months ago
Selectivity estimation in spatial networks
Modern applications requiring spatial network processing pose many interesting query optimization challenges. In many cases, query processing depends on the corresponding graph si...
Eleftherios Tiakas, Apostolos N. Papadopoulos, Ale...