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» The Theory of Probabilistic Databases
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TKDE
2011
150views more  TKDE 2011»
13 years 2 months ago
Estimating and Enhancing Real-Time Data Service Delays: Control-Theoretic Approaches
—It is essential to process real-time data service requests such as stock quotes and trade transactions in a timely manner using fresh data, which represent the current real worl...
Kyoung-Don Kang, Yan Zhou, Jisu Oh
ICDT
1990
ACM
110views Database» more  ICDT 1990»
13 years 12 months ago
Beginnings of a Theory of General Database Completions
Ordinary logical implication is not enough for answering queries in a logic database, since especially negative information is only implicitly represented in the database state. M...
Stefan Brass
SIGMOD
2011
ACM
249views Database» more  SIGMOD 2011»
12 years 10 months ago
ProApproX: a lightweight approximation query processor over probabilistic trees
We demonstrate a system for querying probabilistic XML documents with simple XPath queries. A user chooses between a variety of query answering techniques, both exact and approxim...
Pierre Senellart, Asma Souihli
VLDB
2008
ACM
196views Database» more  VLDB 2008»
14 years 8 months ago
Modelling retrieval models in a probabilistic relational algebra with a new operator: the relational Bayes
This paper presents a probabilistic relational modelling (implementation) of the major probabilistic retrieval models. Such a high-level implementation is useful since it supports ...
Thomas Rölleke, Hengzhi Wu, Jun Wang, Hany Azzam
CORR
2011
Springer
165views Education» more  CORR 2011»
12 years 11 months ago
Data Base Mappings and Theory of Sketches
In this paper we will present the two basic operations for database schemas used in database mapping systems (separation and Data Federation), and we will explain why the functoria...
Zoran Majkic