DocumentCode :
3269853
Title :
Using stream semantics for continuous queries in media stream processors
Author :
Gupta, Amarnath ; Liu, Bin ; Kim, Pilho ; Ramesh, J.
Author_Institution :
San Diego Supercomp. Center, California Univ., San Diego, CA, USA
fYear :
2004
fDate :
30 March-2 April 2004
Firstpage :
854
Abstract :
In the case of media and feature streams, explicit inter-stream constraints exist and can be exploited in the evaluation of continuous queries in the spirit of semantic query optimization. We express these properties using a media stream declaration language MSDL. In the demonstration, we present IMMERSI-MEET, an application built around an immersive environment. The IMMERSI-MEET system distinguishes between continuous streams, where values of different types come at a specified data rate, and discrete streams where sources push values intermittently. In MSDL, any dependence declaration must have at least one dependency specifying predicate in the body. As stream declarations are registered, the stream constraints are interpreted to construct a set of evaluation directives.
Keywords :
query languages; query processing; IMMERSI-MEET system; continuous query; continuous streams; dependency specifying predicate; discrete streams; evaluation directives; inter-stream constraints; media stream declaration language; media stream processors; semantic query optimization; stream declarations; stream semantics; Cameras; Data engineering; Engineering management; Environmental management; Microphones; Sensor systems and applications; Streaming media; Supercomputers; Technology management; Telecommunication traffic;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Data Engineering, 2004. Proceedings. 20th International Conference on
ISSN :
1063-6382
Print_ISBN :
0-7695-2065-0
Type :
conf
DOI :
10.1109/ICDE.2004.1320083
Filename :
1320083
Link To Document :
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