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memory leak for QuantileTransformer

Bug

module:preprocessing

Needs InvestigationIssue requires investigationIssue requires investigation

Performance

Status: Open.

#31668 In scikit-learn/scikit-learn;

· antipisa opened on Jun 27, 2025

ENH: Add MedianAbsoluteDeviationScaler (MADScaler) to sklearn.preprocessing

module:preprocessing

Needs InvestigationIssue requires investigationIssue requires investigation

New Feature

Status: Open.

#31621 In scikit-learn/scikit-learn;

· sisird864 opened on Jun 21, 2025

Add vector quantization example to KBinsDiscretizer docs

good first PR to reviewSimple atomic PR to reviewSimple atomic PR to review

module:preprocessing

Status: Open (in progress).

scikit-learn/scikit-learnnumber 31613

#31613 In scikit-learn/scikit-learn;

· pw42020 opened on Jun 20, 2025

DOC improve doc for <code>_check_n_features</code> and <code>_check_feature_names</code> and fix their usages

Documentation

module:preprocessing

module:utils

Status: Open (in progress).

scikit-learn/scikit-learnnumber 31585

#31585 In scikit-learn/scikit-learn;

· VirenPassi opened on Jun 18, 2025

FIX <code>FunctionTransformer.get_feature_names_out</code> when output is set to dataframe

module:preprocessing

Status: Open (in progress).

scikit-learn/scikit-learnnumber 31573

#31573 In scikit-learn/scikit-learn;

· osyuksel opened on Jun 17, 2025

feat: Add support for sample_weights in TargetEncoder

cython

module:preprocessing

Status: Open (in progress).

scikit-learn/scikit-learnnumber 31324

#31324 In scikit-learn/scikit-learn;

· DuarteSJ opened on May 6, 2025

Enable using 2SD scaling in StandardScaler

module:preprocessing

Status: Open (in progress).

scikit-learn/scikit-learnnumber 31268

#31268 In scikit-learn/scikit-learn;

· Alvaro-Kothe opened on Apr 28, 2025

Add <code>sample_weight</code> support for <code>QuantileTransformer</code> when fit on dense data

module:preprocessing

Waiting for Reviewer

Status: Open (in progress).

scikit-learn/scikit-learnnumber 31147

#31147 In scikit-learn/scikit-learn;

· kaekkr opened on Apr 4, 2025

MNT Improve codespell support (and add CI) and make it fix few typos

Build / CI

module:inspection

module:model_selection

module:preprocessing

No Changelog Needed

Status: Open (in progress).

scikit-learn/scikit-learnnumber 31027

#31027 In scikit-learn/scikit-learn;

· yarikoptic opened on Mar 19, 2025

Fix <code>KBinsDiscretizer</code> uniform strategy : wrong bin assignment caused by floating point errors when using <code>uniform</code> strategy

module:preprocessing

Status: Open (in progress).

scikit-learn/scikit-learnnumber 30962

#30962 In scikit-learn/scikit-learn;

· Rishab260 opened on Mar 8, 2025

Improve TargetEncoder predict time for single rows and many categories

module:preprocessing

Performance

Status: Open.

#30952 In scikit-learn/scikit-learn;

· lorentzenchr opened on Mar 6, 2025

Update _encoders.py

module:preprocessing

Status: Open (in progress).

scikit-learn/scikit-learnnumber 30932

#30932 In scikit-learn/scikit-learn;

· qmeeus opened on Mar 3, 2025