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我试图在地震颠簸dataset上运行kNN分类器,但是当我尝试编码shift属性的标签时,我得到了错误的值错误。以下是代码:Scikit学习不良输入形状()为特定的列
col_names = ['seismic', 'seismoacoustic', 'shift',
'genergy', 'gpuls', 'gdenergy', 'gdpuls',
'ghazard', 'nbumps', 'nbumps2', 'nbumps3',
'nbumps4', 'nbumps5', 'nbumps6', 'nbumps7',
'nbumps89', 'energy', 'maxenergy', 'class']
# Import
sbumps_ds = pd.read_csv('SeismicBumpsDataset.csv', names = col_names)
from sklearn.preprocessing import LabelEncoder
labelenc = LabelEncoder()
# Encode class names to numbers
#sbumps_ds['seismic'] = labelenc.fit_transform(sbumps_ds.seismic)
#sbumps_ds['seismoacoustic'] = labelenc.fit_transform(sbumps_ds.seismoacoustic)
sbumps_ds['shift'] = labelenc.fit_transform(sbumps_ds.shift)
#sbumps_ds['ghazard'] = labelenc.fit_transform(sbumps_ds.ghazard)
#sbumps_ds['shift'] = sbumps_ds.shift.map({'W' : 0, 'N' : 1})
#sbumps_ds['seismic'] = sbumps_ds.seismic.map({'a':0, 'b':1, 'c':2, 'd': 3})
所有属性的形状都是相同的。 以下是错误:
raise ValueError("bad input shape {0}".format(shape))
ValueError: bad input shape()
此外,当我尝试映射属性值,我得到这个错误:
sbumps_ds['shift'] = sbumps_ds.shift.map({'W' : 0, 'N' : 1})
AttributeError: 'function' object has no attribute 'map'
将引发错误只该属性。如果我更改班次的名称,分类器的作品。
DataFrames有一个[shift](http://pandas.pydata.org/pandas-docs/version/0.17.0/generated/pandas.DataFrame.shift.html)方法 – JaminSore
我的谷歌技能吸我猜.. 。 谢谢 :) – fxhh