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    • 3. 发明申请
    • RANDOM DATA STREAM SAMPLING
    • 随机数据流采样
    • WO2011066867A1
    • 2011-06-09
    • PCT/EP2009/066438
    • 2009-12-04
    • TELEFONAKTIEBOLAGET L M ERICSSON (publ)BENKÖ, PéterVERES, András
    • BENKÖ, PéterVERES, András
    • H04L12/26
    • H04L43/026H04L43/022H04L43/028H04L43/0829H04L43/0852
    • There is provided a method of sampling data elements from a data stream for subsequent analysis, the data stream comprising a plurality of data elements, wherein each data element has a respective unique quasi-random identifier determined from a set of identifiers, the method comprising selecting data elements from the data stream whose identifiers are within a first element selection range to give a set of selected data elements, the first element selection range being a subset of the set of identifiers; wherein, once the set of selected data elements comprises a predetermined number of data elements, the method further comprises: determining a second element selection range as a proper subset of the first element selection range; discarding data elements from the set of selected data elements whose identifiers are not within the second element selection range; and selecting at least one further data element from the data stream whose identifier is within the second element selection range for the set of selected data elements.
    • 提供了一种从用于后续分析的数据流采样数据元素的方法,所述数据流包括多个数据元素,其中每个数据元素具有从一组标识符确定的相应的唯一准随机标识符,所述方法包括选择 来自数据流的数据元素,其标识符在第一元素选择范围内,以给出所选数据元素的集合,第一元素选择范围是该组标识符的子集; 其中,一旦所选择的数据元素的集合包括预定数量的数据元素,则该方法还包括:将第二元素选择范围确定为第一元素选择范围的正确子集; 从标识符不在第二元素选择范围内的所选择的数据元素集合中丢弃数据元素; 以及从所述数据流中选择至少一个另外的数据元素,所述数据流的标识符在所选择的数据元素集合的第二元素选择范围内。