Recent questions tagged scikit

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scikit learn - Usng same Label Encoder to test dataset? or new Label Encoder?

I'm totally novice on scikit-learn. I want to know whether I should use the same Label Encoder instance that had ... be the same as a result. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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scikit learn - SMOTE initialisation expects n_neighbors <= n_samples, but n_samples < n_neighbors

I have already pre-cleaned the data, and below shows the format of the top 4 rows: [IN] df.head() ... textual data based on vocabularly present. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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scikit learn - Simple prediction using linear regression with python

data2 = pd.DataFrame(data1['kwh']) data2 kwh date 2012-04-12 14:56:50 1.256400 2012-04-12 15:11:55 1 ... so every help is valuable.Thank you. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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scikit learn - How to output RandomForest Classifier from python?

I have trained a RandomForestClassifier from Python Sckit Learn Module with very big dataset, but question is how can ... their end. Thank you! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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scikit learn - What does KFold in python exactly do?

I am looking at this tutorial: https://www.dataquest.io/mission/74/getting-started-with-kaggle I got to part 9, ... ? for train, test in kf: See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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scikit image - Import error No module named skimage

I am building code on python using skimage. But I am getting import errors while using skimage. ... module named skimage.segmentation See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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scikit learn - The dimension of dual_coef_ in sklearn. SVC

In SVC() for multi-classification, the one-vs-one classifiers are trained. So there are supposed to be n_class ... does each row represent then? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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scikit learn - Missing value imputation in python using KNN

I have a dataset that looks like this 1908 January 5.0 -1.4 1908 February 7.3 1.9 1908 March 6.2 0.3 ... packages are the only ones I can use. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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scikit learn - best-found PCA estimator to be used as the estimator in RFECV

This works (mostly from the demo sample at sklearn): print(__doc__) # Code source: Ga?l Varoquaux # Modified ... as the estimator in RFECV? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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scikit learn - How can I avoid using estimator_params when using RFECV nested within GridSearchCV?

I'm currently working on recursive feature elimination (RFECV) within a grid search (GridSearchCV) for tree based ... RFECV to the estimator? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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scikit learn - how does sklearn do Linear regression when p >n?

it's known that when the number of variables (p) is larger than the number of samples (n) the least square estimator is ... b2[:m] = b1 b1 = b2 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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scikit learn - Understanding max_features parameter in RandomForestRegressor

While constructing each tree in the random forest using bootstrapped samples, for each terminal node, we select m ... from bagging)? Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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907 views

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scikit learn - Is there easy way to grid search without cross validation in python?

There is absolutely helpful class GridSearchCV in scikit-learn to do grid search and cross validation, but I ... evaluate during grid search. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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709 views

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scikit learn - Multiprocessing backed parallel loops cannot be nested below threads

What is the reason of such issue in joblib? 'Multiprocessing backed parallel loops cannot be nested below ... future for such workaround? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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593 views

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scikit learn - Issue with OneHotEncoder for categorical features

I want to encode 3 categorical features out of 10 features in my datasets. I use preprocessing from sklearn. ... Am I missing something here? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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425 views

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scikit learn - How should I teach machine learning algorithm using data with big disproportion of classes? (SVM)

I am trying to teach my SVM algorithm using data of clicks and conversion by people who see the ... into consideration the disproportion? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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665 views

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scikit learn - Making SVM run faster in python

Using the code below for svm in python: from sklearn import datasets from sklearn.multiclass import ... poor probability estimates. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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624 views

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scikit learn - Using hyphen/dash in python repository name and package name

I am trying to make my git repository pip-installable. In preparation for that I am restructuring the repo ... instead of pip install sklearn? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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440 views

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scikit learn - How are feature_importances in RandomForestClassifier determined?

I have a classification task with a time-series as the data input, where each attribute (n=23) represents ... any documentation on this topic. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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550 views

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scikit learn - What does `sample_weight` do to the way a `DecisionTreeClassifier` works in sklearn?

I've read from the relevant documentation that : Class balancing can be done by sampling an equal number of ... a practical example for this. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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