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» Efficient Evaluation of XQuery over Streaming Data
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SIGMOD
2006
ACM
116views Database» more  SIGMOD 2006»
14 years 8 months ago
A geometric approach to monitoring threshold functions over distributed data streams
Monitoring data streams in a distributed system is the focus of much research in recent years. Most of the proposed schemes, however, deal with monitoring simple aggregated values...
Izchak Sharfman, Assaf Schuster, Daniel Keren
VLDB
2004
ACM
137views Database» more  VLDB 2004»
14 years 1 months ago
Schema-Free XQuery
The widespread adoption of XML holds out the promise that document structure can be exploited to specify precise database queries. However, the user may have only a limited knowle...
Yunyao Li, Cong Yu, H. V. Jagadish
PODS
2006
ACM
95views Database» more  PODS 2006»
14 years 8 months ago
Randomized computations on large data sets: tight lower bounds
We study the randomized version of a computation model (introduced in [9, 10]) that restricts random access to external memory and internal memory space. Essentially, this model c...
André Hernich, Martin Grohe, Nicole Schweik...
ADC
2008
Springer
112views Database» more  ADC 2008»
14 years 3 months ago
Semantics based Buffer Reduction for Queries over XML Data Streams
With respect to current methods for query evaluation over XML data streams, adoption of certain types of buffering techniques is unavoidable. Under lots of circumstances, the buff...
Chi Yang, Chengfei Liu, Jianxin Li, Jeffrey Xu Yu,...
JCST
2008
175views more  JCST 2008»
13 years 8 months ago
Improved Approximate Detection of Duplicates for Data Streams Over Sliding Windows
Detecting duplicates in data streams is an important problem that has a wide range of applications. In general, precisely detecting duplicates in an unbounded data stream is not fe...
Hong Shen, Yu Zhang