AttributeError:类型对象“MinimalFeatureExtractionSettings”没有属性“n\u processes”

Question

我尝试使用tsfresh包和extract_features()函数提取特性。在

tsfresh版本：0.4.0.post0.dev1+ng19fa136

但是，我得到了以下错误：

AttributeError: type object 'MinimalFeatureExtractionSettings' has no attribute 'n_processes'

代码：

import numpy as np
import pandas as pd

column_names = ['time_series1', 'time_series2','time_series3']
ts = np.random.rand(6,3)


df_to_extract = pd.DataFrame(data=ts, columns = column_names)

df_to_extract['id'] = 1
df_to_extract['time'] = np.arange(1,7)

#print(df_to_extract)

import tsfresh
from tsfresh import extract_features
from tsfresh import select_features
from tsfresh.utilities.dataframe_functions import impute
from tsfresh import extract_relevant_features
from tsfresh.feature_extraction import extract_features, MinimalFeatureExtractionSettings
from tsfresh.feature_extraction.settings import *
from tsfresh.feature_extraction.settings import FeatureExtractionSettings
import tsfresh.feature_extraction.settings
from tsfresh import utilities
from tsfresh import feature_extraction


extracted_features = extract_features(df_to_extract, 
                                      column_id="id", 
                                      column_sort="time", 
                                      parallelization= 'per_kind', 
                                      feature_extraction_settings= MinimalFeatureExtractionSettings)

包源代码：https://github.com/blue-yonder/tsfresh/blob/master/tsfresh/feature_extraction/extraction.py

我在Win10上使用python3.5（Anaconda）。在

我想可能是某种输入错误。 如何解决这个问题？在

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Answer 1

不再存在MinimalFeatureExtractionSettings对象。现在称为MinimalFCParameters。因此，您必须编写以下代码：

from tsfresh.feature_extraction import extract_features, MinimalFCParameters
...
minimalFCParametersForTsFresh = MinimalFCParameters()
extracted_features = extract_features(df_to_extract,column_id="id",default_fc_parameters = minimalFCParametersForTsFresh)