软件包：libstatistics-welford-perl（0.02-3）

Standard statistics using Welford's algorithm

Statistics::Welford provides standard statistics (mean value, variance, standard deviation, minimum and maximum value as well as the number of elements) using Welford's algorithm.

Welford's algorithm is much more resource efficient compared to the naïve algorithm implemented in e.g. Statistics::Basic::StdDev or Catmandu::Fix::stat_stddev. It especially does not need to load all values into RAM at the same time, i.e. does not require an array containing all values.

See also https://en.wikipedia.org/wiki/Variance/Algorithm#Online_algorithm

标签: 软件开发: Perl 开发, 函数库, 领域: field::statistics, implemented-in::perl, 角色: 开发用函数库, 程序, role::shared-lib, science::calculation, Purpose: 分布式计算

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