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- W2389928716 abstract "Maintaining data stream synopsis is very important in DSMS. Data stream tuple is real-time,continuous and ordered (namely, aged). Query engine needs to adjust query plan by on-line synopsis to guarantee its processing effi- ciency. In this paper, we propose a new synopsis structure called ETHs, which partitions time dimension into expo- nential intervals by EH partitioning technique. In each subinterval, we use tiny histogram which has small space and time complexity to record summary information. So, it can reflect the stateness of certain data elements and share com- putations under n-of-N model. With a guaranteed precision of _eN, it continuously maintaining the summary information of the most recent N elements over data stream with little time and space overhead. Performance study shows that ETHs is a good data stream synosis maintaining algorithm." @default.
- W2389928716 created "2016-06-24" @default.
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- W2389928716 date "2005-01-01" @default.
- W2389928716 modified "2023-09-26" @default.
- W2389928716 title "ETHs: A Data Stream Synopsis Maintaining Algorithm Based on Exponential Partition in n-of-N Model" @default.
- W2389928716 hasPublicationYear "2005" @default.
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