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VLDB
2007
ACM
130views Database» more  VLDB 2007»
16 years 5 months ago
A Simple and Efficient Estimation Method for Stream Expression Cardinalities
Estimating the cardinality (i.e. number of distinct elements) of an arbitrary set expression defined over multiple distributed streams is one of the most fundamental queries of in...
Aiyou Chen, Jin Cao, Tian Bu
SIGMOD
2008
ACM
131views Database» more  SIGMOD 2008»
16 years 5 months ago
Orion 2.0: native support for uncertain data
Orion is a state-of-the-art uncertain database management system with built-in support for probabilistic data as first class data types. In contrast to other uncertain databases, ...
Sarvjeet Singh, Chris Mayfield, Sagar Mittal, Suni...
ICDAR
2009
IEEE
15 years 11 months ago
Robust Recognition of Documents by Fusing Results of Word Clusters
The word error rate of any optical character recognition system (OCR) is usually substantially below its component or character error rate. This is especially true of Indic langua...
Venkat Rasagna, Anand Kumar 0002, C. V. Jawahar, R...
QEST
2009
IEEE
15 years 11 months ago
Nondeterministic Labeled Markov Processes: Bisimulations and Logical Characterization
We extend the theory of labeled Markov processes with internal nondeterminism, a fundamental concept for the further development of a process theory with abstraction on nondetermi...
Pedro R. D'Argenio, Nicolás Wolovick, Pedro...
LICS
2009
IEEE
15 years 11 months ago
Trace Semantics is Fully Abstract
mantics Is Fully Abstract∗ Sumit Nain and Moshe Y. Vardi Rice University, Department of Computer Science Houston, TX 77005-1892, USA The discussion in the computer-science liter...
Sumit Nain, Moshe Y. Vardi