发明名称 |
Method for distinct count estimation over joins of continuous update stream |
摘要 |
The invention provides methods and systems for summarizing multiple continuous update streams using corresponding multiple (parallel) JD Sketch data structures such that, for example, an approximate answer to a query requiring a join operation followed by a duplicate elimination step may be rapidly provided.
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申请公布号 |
US2006085592(A1) |
申请公布日期 |
2006.04.20 |
申请号 |
US20040957185 |
申请日期 |
2004.09.30 |
申请人 |
GANGULY SUMIT;GAROFALAKIS MINOS N;KUMAR AMIT;RASTOGI RAJEEV |
发明人 |
GANGULY SUMIT;GAROFALAKIS MINOS N.;KUMAR AMIT;RASTOGI RAJEEV |
分类号 |
G06F12/14 |
主分类号 |
G06F12/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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