README

Github:

Packagist:

包，用于基于部分数据和历史平均值进行统计估计。

示例

• 给定过去5年中20个城市12月份的平均降雨量（例如，布鲁塞尔为86毫米，……）
• 当我有这15个城市的今年降雨量时，
• 估计其他5个城市

安装

您可以通过composer安装此包

composer require pforret/estimator

用法

use Pforret\Estimator\Estimator;
$est = new Estimator();
$est->set_references($references);

// and then

$estimated = $est->estimate_from_partials($partials);

// or 

$estimated = $est->estimate_from_total(100);

$evaluation = $est->evaluate_partials($partials);

// references = values set with set_references
[references_count] => 4
[references_maximum] => 25
[references_mean] => 25
[references_median] => 25
[references_minimum] => 25
[references_sum] => 100
// partials = values specified with estimate_from_partials
[partials_maximum] => 28
[partials_mean] => 26
[partials_median] => 25
[partials_minimum] => 25
[partials_multiplier] => 1.04
[partials_sum] => 78
// found = subset of references, matching with partials keys
[found_count] => 3
[found_count_fraction] => 0.75
[found_mean] => 25
[found_sum] => 75
[found_sum_fraction] => 0.75
// stat = statistic evaulation of estimate/extrapolation
[stat_confidence] => 74.913
[stat_deviation] => 3

示例

$references=[
    "John"  =>  100,
    "Kevin" =>  120,
    "Sarah" =>  100,
    "Vince" =>  100,
    ];
$est = new Estimator();
$est->set_references($references);
$partials=[
    "John"  => 120,
    "Kevin" => 150,
    // "Sarah" is to be estimated
    "Vince" =>  175,
    ];
$estimation=$est->estimate_from_partials();
/*
    [John] => 120
    [Kevin] => 150
    [Vince] => 175
    [Sarah] => 139 <<< estimation
*/

测试

composer test

变更日志

请参阅CHANGELOG了解最近更改的详细信息。

贡献

请参阅CONTRIBUTING了解详细信息。

安全

如果您发现任何与安全相关的问题，请通过author_email而不是使用问题跟踪器发送电子邮件。

致谢

• Peter Forret
• 所有贡献者

许可证

MIT许可证（MIT）。请参阅许可证文件了解更多信息。