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python - scikit-learn 和 sklearn 的区别

在OSX10.11.6和python2.7.10上,我需要从sklearn流形导入。我安装了numpy1.8Orc1、scipy.13Ob1和scikit-learn0.17.1。我使用pip安装sklearn(0.0),但是当我尝试从sklearn流形导入时,我得到以下信息:Traceback(mostrecentcalllast):File"",line1,inFile"/Library/Python/2.7/site-packages/sklearn/init.py",line57,infrom.baseimportcloneFile"/Library/Python/2.7/si

python - scikit-learn 和 sklearn 的区别

在OSX10.11.6和python2.7.10上,我需要从sklearn流形导入。我安装了numpy1.8Orc1、scipy.13Ob1和scikit-learn0.17.1。我使用pip安装sklearn(0.0),但是当我尝试从sklearn流形导入时,我得到以下信息:Traceback(mostrecentcalllast):File"",line1,inFile"/Library/Python/2.7/site-packages/sklearn/init.py",line57,infrom.baseimportcloneFile"/Library/Python/2.7/si

python - sklearn.cross_validation.StratifiedShuffleSplit - 错误 : "indices are out-of-bounds"

我试图使用Scikit-learn的StratifiedShuffleSplit拆分样本数据集。我按照Scikit-learn文档here中显示的示例进行操作。importpandasaspdimportnumpyasnp#UCI'swinedatasetwine=pd.read_csv("https://s3.amazonaws.com/demo-datasets/wine.csv")#separatetargetvariablefromdatasettarget=wine['quality']data=wine.drop('quality',axis=1)#StratifiedSp

python - sklearn.cross_validation.StratifiedShuffleSplit - 错误 : "indices are out-of-bounds"

我试图使用Scikit-learn的StratifiedShuffleSplit拆分样本数据集。我按照Scikit-learn文档here中显示的示例进行操作。importpandasaspdimportnumpyasnp#UCI'swinedatasetwine=pd.read_csv("https://s3.amazonaws.com/demo-datasets/wine.csv")#separatetargetvariablefromdatasettarget=wine['quality']data=wine.drop('quality',axis=1)#StratifiedSp

python - sklearn : TFIDF Transformer : How to get tf-idf values of given words in document

我使用sklearn使用以下命令计算文档的TFIDF(词频逆文档频率)值:fromsklearn.feature_extraction.textimportCountVectorizercount_vect=CountVectorizer()X_train_counts=count_vect.fit_transform(documents)fromsklearn.feature_extraction.textimportTfidfTransformertf_transformer=TfidfTransformer(use_idf=False).fit(X_train_counts)X_

python - sklearn : TFIDF Transformer : How to get tf-idf values of given words in document

我使用sklearn使用以下命令计算文档的TFIDF(词频逆文档频率)值:fromsklearn.feature_extraction.textimportCountVectorizercount_vect=CountVectorizer()X_train_counts=count_vect.fit_transform(documents)fromsklearn.feature_extraction.textimportTfidfTransformertf_transformer=TfidfTransformer(use_idf=False).fit(X_train_counts)X_

python - sklearn 估计器管道的参数无效

我正在使用Python2.7和sklearn0.16实现O'Reilly书籍“IntroductiontoMachineLearningwithPython”中的一个示例。我正在使用的代码:pipe=make_pipeline(TfidfVectorizer(),LogisticRegression())param_grid={"logisticregression_C":[0.001,0.01,0.1,1,10,100],"tfidfvectorizer_ngram_range":[(1,1),(1,2),(1,3)]}grid=GridSearchCV(pipe,param_gri

python - sklearn 估计器管道的参数无效

我正在使用Python2.7和sklearn0.16实现O'Reilly书籍“IntroductiontoMachineLearningwithPython”中的一个示例。我正在使用的代码:pipe=make_pipeline(TfidfVectorizer(),LogisticRegression())param_grid={"logisticregression_C":[0.001,0.01,0.1,1,10,100],"tfidfvectorizer_ngram_range":[(1,1),(1,2),(1,3)]}grid=GridSearchCV(pipe,param_gri

python - 使用 sklearn 的因子加载

我想要python中各个变量和主成分之间的相关性。我在sklearn中使用PCA。我不明白在分解数据后如何实现加载矩阵?我的代码在这里。iris=load_iris()data,y=iris.data,iris.targetpca=PCA(n_components=2)transformed_data=pca.fit(data).transform(data)eigenValues=pca.explained_variance_ratio_http://scikit-learn.org/stable/modules/generated/sklearn.decomposition.PCA

python - 使用 sklearn 的因子加载

我想要python中各个变量和主成分之间的相关性。我在sklearn中使用PCA。我不明白在分解数据后如何实现加载矩阵?我的代码在这里。iris=load_iris()data,y=iris.data,iris.targetpca=PCA(n_components=2)transformed_data=pca.fit(data).transform(data)eigenValues=pca.explained_variance_ratio_http://scikit-learn.org/stable/modules/generated/sklearn.decomposition.PCA