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Questions - scikit-learn

Scikit learn GridSearchCV with pipeline with custom transformer

I'm trying to perform a GridSearchCV on a pipeline with a custom transformer. The transformer enriches the features "year" and "odometer" polynomially and one hot encodes the rest ...
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Davis Stöwer

python-3.x

machine-learning

scikit-learn

pipeline

gridsearchcv

Votes: 0

Answers: 1

Latest Answer

To debug searches in general, set error_score='raise', so that you get a full error traceback. Your issue appears to be data-dependent; I can run this just fine on a custom dataset. That suggests to ...
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Ben Reiniger

ImportError: cannot import name 'SequentialFeatureSelector'

from sklearn.feature_selection import SequentialFeatureSelector When I import SequentialFeatureSelector from sklearn.feature_selection I get an import error ImportError: cannot import name 'Sequenti...
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Pruthvi Amin

python

azure

machine-learning

scikit-learn

data-science

Votes: 0

Answers: 1

Latest Answer

SequentialFeatureSelector, per sklearn documentation, was new in version 0.24. As you indicated, importing in Google Colab and it works would indicate Google Colab has a more updated version. It doesn...
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artemis

Why is the score_samples-function of the IsolationForest algorithm in Scikit-Learn giving identical scores?

I'm trying to use the IsolationForest algorithm in scikit-learn, and I'm interested in the computed score. But when calling score_samples() I don't get the scores I expect. Here is a plot of my data: ...
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afd

python

scikit-learn

scoring

anomaly-detection

isolation-forest

Votes: 0

Answers: 1

Latest Answer

I belive this issue is caused by your anomaly samples are outside of the data distribution of the training data. In this region there will be no splits in the trees, so you just end up with "maxi...
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Jon Nordby

Confused about standardization before PCA

I'm trying to train a linear regression model. With GridSearchCV I want to investigate how the model performs with different numbers of dimensions after PCA. I also found a sklearn tutorial which does...
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Fea94

python

machine-learning

scikit-learn

pca

Votes: 0

Answers: 1

Latest Answer

I did not check correctness of the code, but only read the text and looked at the graphs. I will assume your analysis is correct. I will only attempt to address But I'm wondering why they didn't scal...
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Gulzar

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