如何在Weka中使用JSON文件 [英] How do I use a JSON file with weka

问题描述

我有一个JSON文件，并想打开weka中的数据，但是当我这样做时，出现以下错误: 无法加载JSON文件

I have a JSON file and want to open the data in weka, but when I do, I get the following error:

在邮件列表中，有几个问题关于JSON，但有关TL; DR的信息，只是我注意到在"weka期望的格式"中谈到了JSON.当然，没有提到该格式是什么.即将在源头进行一次潜水，但是我希望SO用户可以在我花太多时间之前提供帮助.

Looking around on the mailing list, there are a few questions about JSON, but TL;DR except that I noticed talk of JSON in the "format weka expects". Of course, there was no mention of what that format is. About to take a dive in the source, but I hope SO users can help before I spend too much time on this.

推荐答案

以了解JSON对象的格式及其与ARFF的关系.步骤非常简单. 使用GUI工具执行以下操作:

To gain an understanding about the format of the JSON object and its relationship to ARFF. The steps were surprisingly simple. Use the GUI tool to do the following:

1. 选择资源管理器选项
2. 在预处理"选项卡上选择打开的文件
3. 加载任何默认提供的ARFF文件
4. 选择保存，然后可以选择JSON扩展名

基本上每个JSON文件都必须具有: {header:{关系:，属性:[{}，{}]，数据:[{}，{}]}}}}

basically every JSON file must have: {header:{ relation: , attributes:[{},{}],data:[{},{}]}}}

希望这会有所帮助

{"houses":{
"relation":"house",
"attributes":{
    "houseSize":["NUMERIC"],
    "lotSize":
    "bedrooms":
    "granite":
    "bathroom":
    "sellingPrice":
},
"data":[
    [3529,9191,6,0,0,205000 ],
    [3247,10061,5,1,1,224900],
    [4032,10150,5,0,1,197900 ],
    [2397,14156,4,1,0,189900 ],
    [2200,9600,4,0,1,195000],
    [3536,19994,6,1,1,325000 ],
    [2983,9365,5,0,1,230000]
]}}

可以为属性指定更多信息，如下所示:

The attributes can have more information specified to them as follows:

{"contact_lenses":{
"relation": "contact-lenses",
"attributes" : {
    "age":["young", "pre-presbyopic", "presbyopic"],
    "spectacle-prescrip":["myope", "hypermetrope"],
    "astigmatism":["no", "yes"],
    "tear-prod-rate":["reduced", "normal"],
    "contact-lenses":["soft", "hard", "none"]
    },
"data":[]
}

}

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