特征离散  
=================

缺前端控件截图-包含节点控件效果展示
[参考JSON](json/bucketizer.json)

离散函数有：
    1. 等距离散
    #. 等频离散
    #. 基于Gini增益离散
    #. 基于熵增益离散


参数
------------------

+------------------------+--------+----------+-------------------------------------------+
| 名称                   | 类型   | 是否必传 | 备注                                      |
+------------------------+--------+----------+-------------------------------------------+
| inputarg               | array  | Y        | 字段集合                                  |
+------------------------+--------+----------+-------------------------------------------+
| inputarg.#.tbname1     | string | Y        | 输入表名                                  |
+------------------------+--------+----------+-------------------------------------------+
| inputarg.#.singal1     | int    | Y        | 是否保留原表数据，默认0，0-不保留，1-保留 |
+------------------------+--------+----------+-------------------------------------------+
| inputarg.#.columnArray | array  | Y        | 字段名称集合                              |
+------------------------+--------+----------+-------------------------------------------+
| inputarg.#.strlist     | array  | Y        | 离散标准集合                              |
+------------------------+--------+----------+-------------------------------------------+

## 返回
------------------

+--------+--------+----------+--------------------------------+
| 名称   | 类型   | 是否必传 | 备注                           |
+--------+--------+----------+--------------------------------+
| result | String | Y        | 所有输出的JSON，按节点类型解析 |
+--------+--------+----------+--------------------------------+


## 算法入口及参数
-------------------------------

+--------------------+----------------------------------------------------------+-------------------------------------------+
| 名称               | 示例                                                     | 备注                                      |
+--------------------+----------------------------------------------------------+-------------------------------------------+
| args[0]            | tmptb2019062511473300088201                              | 输入表名                                  |
+--------------------+----------------------------------------------------------+-------------------------------------------+
| args[1]            | tmptb2019062511473300088306                              | 输出表名                                  |
+--------------------+----------------------------------------------------------+-------------------------------------------+
| args[2]            | sepal_length,petal_width                                 | 需要离散的列                              |
+--------------------+----------------------------------------------------------+-------------------------------------------+
| args[3]            | 1                                                        | 是否保留原表数据，默认0，0-不保留，1-保留 |
+--------------------+----------------------------------------------------------+-------------------------------------------+
| 以下是变长输入变量 |                                                          |                                           |
+--------------------+----------------------------------------------------------+-------------------------------------------+
| args[4]            | 0,4,10,Double.POSITIVE_INFINITY                          | result1离散标准，正无穷、负无穷的表示     |
+--------------------+----------------------------------------------------------+-------------------------------------------+
| args[5]            | Double.NEGATIVE_INFINITY,0,4,10,Double.POSITIVE_INFINITY | result2离散标准                           |
+--------------------+----------------------------------------------------------+-------------------------------------------+
| …………               |                                                          |                                           |
+--------------------+----------------------------------------------------------+-------------------------------------------+

功能说明 
--------------

该算子的主要用途是使用等距离散(默认)来完成数据离散。  

参数说明  
-----------------

+-------------+------------+--------------+------------+---------------------------------------------------------------+
| 参数键值    | 参数名称   | 参数取值范围 | 默认值     | 参数描述                                                      |
+-------------+------------+--------------+------------+---------------------------------------------------------------+
| input1      | 输入数据表 | 字符串       | -          | -                                                             |
+-------------+------------+--------------+------------+---------------------------------------------------------------+
| output1     | 输出数据表 | 字符串       | -          | -                                                             |
+-------------+------------+--------------+------------+---------------------------------------------------------------+
| strategy    | 离散函数   | 字符串       | "等距离散" | 可选无监督离散或者监督离散，默认使用等距离散                  |
+-------------+------------+--------------+------------+---------------------------------------------------------------+
| columnArray | 字段集合   | 字符串       | ""         | 选择需要计算的列，如果不选则默认转换全部字段                  |
+-------------+------------+--------------+------------+---------------------------------------------------------------+
| strlist     | 离散区间   | 变长集合     | -          | 各个字段的离散标准集合，例如：0,4,10,Double.POSITIVE_INFINITY |
+-------------+------------+--------------+------------+---------------------------------------------------------------+

.. code::

	{
	"operators": [   #算子配置数组（一次性可以上传多个算子）
		{
		"name": "bucketizer",
		"descritpion": "",
		"folder": "/特征工程/特征变换",
		"configs": { 
		"properties": {
			"mainclass": "com.southgis.ispatial.ml.feature.BucketizerExample"
		},
		"params": {
				"input_nodes": [
				{
					"key": "input1",
					"desc": "输入数据表",
					"type": "table"
				}
				],
				"input_form": [
				{
					"key": "strategy",
					"label": "离散函数",
					"placeholder": "必选项",
					"type": "select",
									"optionItems":[
						"等距离散"
					]
				},
				{
					"key": "columnArray",
					"label": "需要计算的字段",
					"placeholder": "请输入数据字段，','分隔",
					"type": "input"
				},
				{
					"key": "strlist",
					"label": "离散区间",
					"placeholder": "变长字段，例如[0,4,10,Double.POSITIVE_INFINITY],[...]",
					"type": "input"
				}
				],
				"output_nodes": [
				{
					"key": "output1",
					"desc": "输出数据",
					"type": "table"
				}
				]
			},
			"preview": {
			"chart_type": "",
			"chart_option": {},
			"table_type": ""
			}
		}
		}
	]
	}