jm + histogram   2

HdrHistogram by giltene
A Histogram that supports recording and analyzing sampled data value counts across a configurable integer value range with configurable value precision within the range. Value precision is expressed as the number of significant digits in the value recording, and provides control over value quantization behavior across the value range and the subsequent value resolution at any given level.
hdr  histogram  data-structures  coding  gil-tene  sampling  measuring 
october 2013 by jm
Distributed Streams Algorithms for Sliding Windows [PDF]
'Massive data sets often arise as physically distributed, parallel data streams, and it is important to estimate various aggregates and statistics on the union of these streams. This paper presents algorithms for estimating aggregate
functions over a “sliding window” of the N most recent data items in one or more streams. [...] Our results are obtained using a novel family of synopsis data structures called waves.'
waves  papers  streaming  algorithms  percentiles  histogram  distcomp  distributed  aggregation  statistics  estimation  streams 
february 2013 by jm

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