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我使用Cloudera 5.2 VM和pandas 0.18.0 我想将kmeans应用于我的数据框。但我有很多专栏。pandas kmeans如何使用分类属性
我的数据帧是
adClicksPerTime.head(n=5)
Out[50]:
timestamp adCategory userId totalAdClicks
0 2016-05-26 15:00:00 automotive 355 1
1 2016-05-26 15:00:00 clothing 1027 1
2 2016-05-26 15:00:00 computers 1821 1
3 2016-05-26 15:00:00 computers 2139 1
4 2016-05-26 15:00:00 electronics 253 1
for col in adClicksPerTime:
print(col)
print(type(adClicksPerTime[col][1]))
timestamp
<class 'pandas.tslib.Timestamp'>
adCategory
<class 'str'>
userId
<class 'numpy.int64'>
totalAdClicks
<class 'numpy.int64'>
当我执行k均值我得到
ValueError: could not convert string to float: 'automotive'
我想我的字符串转换为明确的类型,之后分配数字代码
adClicksPerTime.adCategory = pd.Categorical.from_array(adClicksPerTime.adCategory)
adClicksPerTime.head(n=5)
Out[54]:
timestamp adCategory userId totalAdClicks
0 2016-05-26 15:00:00 automotive 355 1
1 2016-05-26 15:00:00 clothing 1027 1
2 2016-05-26 15:00:00 computers 1821 1
3 2016-05-26 15:00:00 computers 2139 1
4 2016-05-26 15:00:00 electronics 253 1
for col in adClicksPerTime:
print(col)
print(type(adClicksPerTime[col][1]))
timestamp
<class 'pandas.tslib.Timestamp'>
adCategory
<class 'str'>
userId
<class 'numpy.int64'>
totalAdClicks
<class 'numpy.int64'>
错误
如何将kmeans应用到str字段?
k-means仅用于**连续**变量。不要在这类数据上使用它! –