API概念

API(Application Programming Interface,应用程序编程接口)是一些预先定义的函数,目的是提供应用程序与开发人员基于某软件或硬件得以访问一组例程的能力,而又无需访问源码,或理解内部工作机制的细节。

应用程序接口(API:application programming interface)是一组定义、程序及协议的集合,通过 API 接口实现计算机软件之间的相互通信。API 的一个主要功能是提供通用功能集。程序员通过使用 API 函数开发应用程序,从而可以避免编写无用程序,以减轻编程任务。

本文章主要介绍数据挖掘之决策树的Web Service接口,详细描述决策树C50、CART的API使用方法。


目录概览

  • 1.接口参数说明

  • 2.决策树方法API接口


1.接口参数说明

API接口域名网址:

    http://api.galaxystatistics.com

端口号:

    8882        # 不同的接口,会使用不同的端口号

我相信程序员都是有节操的,不会恶意使用这个Key!

    公共测试 ApiKey(token=xxxxxx): 098f6bcd4621d373cade4e832627b4f6

数据类型:

    type=11     # 不同决策树方法的api接口,采用不同的type值【如:21、22、23】

输出变量名:

    var_name=C50Method       # 根据程序需求,自定义变量名称【如:C50Method、CARTMethod】

模型方法参数:

train_str              # 训练集数据字符串
test_str               # 测试集数据字符串
omethod                # 回归树决策树方法选择【回归或分类】

模型方法参数举例:

# 训练集数据字符串
  train_str = "5.1,3.5,1.4,0.2,A|4.9,3,1.4,0.2,A|5,3.6,1.4,0.2,A|4.7,3.2,1.6,0.2,A|5.4,3.4,1.5,0.4,A|5.5,3.5,1.3,0.2,A|4.4,3,1.3,0.2,A|5,3.5,1.3,0.3,A|4.5,2.3,1.3,0.3,A|4.4,3.2,1.3,0.2,A|5.1,3.8,1.6,0.2,A|7,3.2,4.7,1.4,B|6.4,3.2,4.5,1.5,B|6.9,3.1,4.9,1.5,B|5.5,2.3,4,1.3,B|5.2,2.7,3.9,1.4,B|6.1,2.9,4.7,1.4,B|5.6,2.9,3.6,1.3,B|5.8,2.7,4.1,1,B|6.2,2.2,4.5,1.5,B|5.9,3.2,4.8,1.8,B|5.5,2.4,3.7,1,B|5.8,2.7,3.9,1.2,B|5.4,3,4.5,1.5,B|6.7,3.1,4.7,1.5,B|5.6,3,4.1,1.3,B|5.7,3,4.2,1.2,B|6.3,3.3,6,2.5,C|6.5,3,5.8,2.2,C|4.9,2.5,4.5,1.7,C|7.2,3.6,6.1,2.5,C|6.5,3.2,5.1,2,C|5.8,2.8,5.1,2.4,C|7.7,2.6,6.9,2.3,C|5.6,2.8,4.9,2,C|6.3,2.7,4.9,1.8,C|6.1,3,4.9,1.8,C|7.2,3,5.8,1.6,C|6.1,2.6,5.6,1.4,C|7.7,3,6.1,2.3,C|6.3,3.4,5.6,2.4,C|6.9,3.1,5.4,2.1,C|6.7,3.3,5.7,2.5,C|5.9,3,5.1,1.8,C"           

# 测试集数据字符串
  test_str = "5.1,3.5,1.4,0.2|4.9,3,1.4,0.2|5,3.6,1.4,0.2|4.7,3.2,1.6,0.2|5.4,3.4,1.5,0.4|5.5,3.5,1.3,0.2|4.4,3,1.3,0.2|5,3.5,1.3,0.3|4.5,2.3,1.3,0.3|4.4,3.2,1.3,0.2|5.1,3.8,1.6,0.2|7,3.2,4.7,1.4|6.4,3.2,4.5,1.5|6.9,3.1,4.9,1.5|5.5,2.3,4,1.3|5.2,2.7,3.9,1.4|6.1,2.9,4.7,1.4|5.6,2.9,3.6,1.3|5.8,2.7,4.1,1|6.2,2.2,4.5,1.5|5.9,3.2,4.8,1.8|5.5,2.4,3.7,1|5.8,2.7,3.9,1.2|5.4,3,4.5,1.5|6.7,3.1,4.7,1.5|5.6,3,4.1,1.3|5.7,3,4.2,1.2|6.3,3.3,6,2.5|6.5,3,5.8,2.2|4.9,2.5,4.5,1.7|7.2,3.6,6.1,2.5|6.5,3.2,5.1,2|5.8,2.8,5.1,2.4|7.7,2.6,6.9,2.3|5.6,2.8,4.9,2|6.3,2.7,4.9,1.8|6.1,3,4.9,1.8|7.2,3,5.8,1.6|6.1,2.6,5.6,1.4|7.7,3,6.1,2.3|6.3,3.4,5.6,2.4|6.9,3.1,5.4,2.1|6.7,3.3,5.7,2.5|5.9,3,5.1,1.8"

# 测试集数据字符串
omethod = "class"  【分类】
omethod = "anova"  【回归】

2.决策树方法API接口

(2.1) C50决策树

URL:http://api.galaxystatistics.com:8882/?token=098f6bcd4621d373cade4e832627b4f6&type=21&var_name=C50Method&train_str=5.1,3.5,1.4,0.2,A|4.9,3,1.4,0.2,A|5,3.6,1.4,0.2,A|4.7,3.2,1.6,0.2,A|5.4,3.4,1.5,0.4,A|5.5,3.5,1.3,0.2,A|4.4,3,1.3,0.2,A|5,3.5,1.3,0.3,A|4.5,2.3,1.3,0.3,A|4.4,3.2,1.3,0.2,A|5.1,3.8,1.6,0.2,A|7,3.2,4.7,1.4,B|6.4,3.2,4.5,1.5,B|6.9,3.1,4.9,1.5,B|5.5,2.3,4,1.3,B|5.2,2.7,3.9,1.4,B|6.1,2.9,4.7,1.4,B|5.6,2.9,3.6,1.3,B|5.8,2.7,4.1,1,B|6.2,2.2,4.5,1.5,B|5.9,3.2,4.8,1.8,B|5.5,2.4,3.7,1,B|5.8,2.7,3.9,1.2,B|5.4,3,4.5,1.5,B|6.7,3.1,4.7,1.5,B|5.6,3,4.1,1.3,B|5.7,3,4.2,1.2,B|6.3,3.3,6,2.5,C|6.5,3,5.8,2.2,C|4.9,2.5,4.5,1.7,C|7.2,3.6,6.1,2.5,C|6.5,3.2,5.1,2,C|5.8,2.8,5.1,2.4,C|7.7,2.6,6.9,2.3,C|5.6,2.8,4.9,2,C|6.3,2.7,4.9,1.8,C|6.1,3,4.9,1.8,C|7.2,3,5.8,1.6,C|6.1,2.6,5.6,1.4,C|7.7,3,6.1,2.3,C|6.3,3.4,5.6,2.4,C|6.9,3.1,5.4,2.1,C|6.7,3.3,5.7,2.5,C|5.9,3,5.1,1.8,C&test_str=5.1,3.5,1.4,0.2|4.9,3,1.4,0.2|5,3.6,1.4,0.2|4.7,3.2,1.6,0.2|5.4,3.4,1.5,0.4|5.5,3.5,1.3,0.2|4.4,3,1.3,0.2|5,3.5,1.3,0.3|4.5,2.3,1.3,0.3|4.4,3.2,1.3,0.2|5.1,3.8,1.6,0.2|7,3.2,4.7,1.4|6.4,3.2,4.5,1.5|6.9,3.1,4.9,1.5|5.5,2.3,4,1.3|5.2,2.7,3.9,1.4|6.1,2.9,4.7,1.4|5.6,2.9,3.6,1.3|5.8,2.7,4.1,1|6.2,2.2,4.5,1.5|5.9,3.2,4.8,1.8|5.5,2.4,3.7,1|5.8,2.7,3.9,1.2|5.4,3,4.5,1.5|6.7,3.1,4.7,1.5|5.6,3,4.1,1.3|5.7,3,4.2,1.2|6.3,3.3,6,2.5|6.5,3,5.8,2.2|4.9,2.5,4.5,1.7|7.2,3.6,6.1,2.5|6.5,3.2,5.1,2|5.8,2.8,5.1,2.4|7.7,2.6,6.9,2.3|5.6,2.8,4.9,2|6.3,2.7,4.9,1.8|6.1,3,4.9,1.8|7.2,3,5.8,1.6|6.1,2.6,5.6,1.4|7.7,3,6.1,2.3|6.3,3.4,5.6,2.4|6.9,3.1,5.4,2.1|6.7,3.3,5.7,2.5|5.9,3,5.1,1.8

(2.2) CART决策树-分类

URL:http://api.galaxystatistics.com:8882/?token=098f6bcd4621d373cade4e832627b4f6&type=22&var_name=CARTMethod&train_str=5.1,3.5,1.4,0.2,A|4.9,3,1.4,0.2,A|5,3.6,1.4,0.2,A|4.7,3.2,1.6,0.2,A|5.4,3.4,1.5,0.4,A|5.5,3.5,1.3,0.2,A|4.4,3,1.3,0.2,A|5,3.5,1.3,0.3,A|4.5,2.3,1.3,0.3,A|4.4,3.2,1.3,0.2,A|5.1,3.8,1.6,0.2,A|7,3.2,4.7,1.4,B|6.4,3.2,4.5,1.5,B|6.9,3.1,4.9,1.5,B|5.5,2.3,4,1.3,B|5.2,2.7,3.9,1.4,B|6.1,2.9,4.7,1.4,B|5.6,2.9,3.6,1.3,B|5.8,2.7,4.1,1,B|6.2,2.2,4.5,1.5,B|5.9,3.2,4.8,1.8,B|5.5,2.4,3.7,1,B|5.8,2.7,3.9,1.2,B|5.4,3,4.5,1.5,B|6.7,3.1,4.7,1.5,B|5.6,3,4.1,1.3,B|5.7,3,4.2,1.2,B|6.3,3.3,6,2.5,C|6.5,3,5.8,2.2,C|4.9,2.5,4.5,1.7,C|7.2,3.6,6.1,2.5,C|6.5,3.2,5.1,2,C|5.8,2.8,5.1,2.4,C|7.7,2.6,6.9,2.3,C|5.6,2.8,4.9,2,C|6.3,2.7,4.9,1.8,C|6.1,3,4.9,1.8,C|7.2,3,5.8,1.6,C|6.1,2.6,5.6,1.4,C|7.7,3,6.1,2.3,C|6.3,3.4,5.6,2.4,C|6.9,3.1,5.4,2.1,C|6.7,3.3,5.7,2.5,C|5.9,3,5.1,1.8,C&test_str=5.1,3.5,1.4,0.2|4.9,3,1.4,0.2|5,3.6,1.4,0.2|4.7,3.2,1.6,0.2|5.4,3.4,1.5,0.4|5.5,3.5,1.3,0.2|4.4,3,1.3,0.2|5,3.5,1.3,0.3|4.5,2.3,1.3,0.3|4.4,3.2,1.3,0.2|5.1,3.8,1.6,0.2|7,3.2,4.7,1.4|6.4,3.2,4.5,1.5|6.9,3.1,4.9,1.5|5.5,2.3,4,1.3|5.2,2.7,3.9,1.4|6.1,2.9,4.7,1.4|5.6,2.9,3.6,1.3|5.8,2.7,4.1,1|6.2,2.2,4.5,1.5|5.9,3.2,4.8,1.8|5.5,2.4,3.7,1|5.8,2.7,3.9,1.2|5.4,3,4.5,1.5|6.7,3.1,4.7,1.5|5.6,3,4.1,1.3|5.7,3,4.2,1.2|6.3,3.3,6,2.5|6.5,3,5.8,2.2|4.9,2.5,4.5,1.7|7.2,3.6,6.1,2.5|6.5,3.2,5.1,2|5.8,2.8,5.1,2.4|7.7,2.6,6.9,2.3|5.6,2.8,4.9,2|6.3,2.7,4.9,1.8|6.1,3,4.9,1.8|7.2,3,5.8,1.6|6.1,2.6,5.6,1.4|7.7,3,6.1,2.3|6.3,3.4,5.6,2.4|6.9,3.1,5.4,2.1|6.7,3.3,5.7,2.5|5.9,3,5.1,1.8&omethod=class

(2.3) CART决策树-回归

URL:http://api.galaxystatistics.com:8882/?token=098f6bcd4621d373cade4e832627b4f6&type=22&var_name=CARTMethod&train_str=5.1,3.5,1.4,0.2|4.9,3,1.4,0.2|5,3.6,1.4,0.2|4.7,3.2,1.6,0.2|5.4,3.4,1.5,0.4|5.5,3.5,1.3,0.2|4.4,3,1.3,0.2|5,3.5,1.3,0.3|4.5,2.3,1.3,0.3|4.4,3.2,1.3,0.2|5.1,3.8,1.6,0.2|7,3.2,4.7,1.4|6.4,3.2,4.5,1.5|6.9,3.1,4.9,1.5|5.5,2.3,4,1.3|5.2,2.7,3.9,1.4|6.1,2.9,4.7,1.4|5.6,2.9,3.6,1.3|5.8,2.7,4.1,1|6.2,2.2,4.5,1.5|5.9,3.2,4.8,1.8|5.5,2.4,3.7,1|5.8,2.7,3.9,1.2|5.4,3,4.5,1.5|6.7,3.1,4.7,1.5|5.6,3,4.1,1.3|5.7,3,4.2,1.2|6.3,3.3,6,2.5|6.5,3,5.8,2.2|4.9,2.5,4.5,1.7|7.2,3.6,6.1,2.5|6.5,3.2,5.1,2|5.8,2.8,5.1,2.4|7.7,2.6,6.9,2.3|5.6,2.8,4.9,2|6.3,2.7,4.9,1.8|6.1,3,4.9,1.8|7.2,3,5.8,1.6|6.1,2.6,5.6,1.4|7.7,3,6.1,2.3|6.3,3.4,5.6,2.4|6.9,3.1,5.4,2.1|6.7,3.3,5.7,2.5|5.9,3,5.1,1.8&test_str=4.4,3,1.3|5,3.5,1.3|4.5,2.3,1.3|4.4,3.2,1.3|5.1,3.8,1.6|7,3.2,4.7|6.1,2.9,4.7|5.8,2.7,4.1|6.2,2.2,4.5|5.9,3.2,4.8|5.5,2.4,3.7|5.8,2.7,3.9|5.4,3,4.5|6.7,3.1,4.7|5.6,3,4.1|5.7,3,4.2|6.3,3.3,6|6.5,3,5.8|4.9,2.5,4.5|7.2,3.6,6.1|6.5,3.2,5.1|5.8,2.8,5.1|7.7,2.6,6.9|5.6,2.8,4.9|6.3,2.7,4.9|6.1,3,4.9|6.7,3.3,5.7|5.9,3,5.1&omethod=anova