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» Process algebra for performance evaluation
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DLOG
2009
15 years 1 months ago
What Happened to Bob? Semantic Data Mining of Context Histories
We report on event recognition within the life logging application IYOUIT for the automatic creation of static diary-like Blogs. Based on the qualitative context histories produced...
Michael Wessel, Marko Luther, Ralf Möller
EDBT
2010
ACM
177views Database» more  EDBT 2010»
15 years 11 months ago
Bridging the gap between intensional and extensional query evaluation in probabilistic databases
There are two broad approaches to query evaluation over probabilistic databases: (1) Intensional Methods proceed by manipulating expressions over symbolic events associated with u...
Abhay Jha, Dan Olteanu, Dan Suciu
IPPS
2006
IEEE
15 years 10 months ago
Modelling job allocation where service duration is unknown
In this paper a novel job allocation scheme in distributed systems (TAG) is modelled using the Markovian process algebra PEPA. This scheme requires no prior knowledge of job size ...
Nigel Thomas
ER
2004
Springer
90views Database» more  ER 2004»
15 years 9 months ago
WUML: A Web Usage Manipulation Language for Querying Web Log Data
In this paper, we develop a novel Web Usage Manipulation Language (WUML) which is a declarative language for manipulating Web log data. We assume that a set of trails formed by use...
Qingzhao Tan, Yiping Ke, Wilfred Ng
VLDB
2004
ACM
113views Database» more  VLDB 2004»
15 years 9 months ago
Resource Sharing in Continuous Sliding-Window Aggregates
We consider the problem of resource sharing when processing large numbers of continuous queries. We specifically address sliding-window aggregates over data streams, an important...
Arvind Arasu, Jennifer Widom