Inconsistent navigation on user guide Documentation Easy

#16951 opened Apr 17, 2020 by amueller

11

Pipeline requires both fit and transform method to be available instead of only fit_transform Bug Easy Low Priority module:pipeline

#16710 opened Mar 16, 2020 by jnboehm

10

where can i get the offline tutorials Documentation Easy help wanted

#16558 opened Feb 27, 2020 by Dashu-Xu

11

KDTree docstring has no link to userguide, no link to source code Documentation Easy good first issue

#16938 opened Apr 16, 2020 by amueller

6

Make colorbar in plot_confusion_matrix optional Easy New Feature good first issue module:metrics

#16519 opened Feb 21, 2020 by amueller

15

OneHotEncoder.get_feature_names doesn't work with integer column names Bug Easy Needs Decision module:preprocessing

#16593 opened Feb 28, 2020 by amueller

25

Lack of comparisons between regression forest split criteria Documentation Easy help wanted module:ensemble

#16370 opened Feb 3, 2020 by morgsmss7

7

Meaning of the output in PLSCanonical Documentation module:cross_decomposition

#17128 opened May 5, 2020 by ZaixuCui

2

BIC formula or calculation not mentioned Documentation

#17072 opened Apr 28, 2020 by bsamanvitha

2

One Class SVM default nu value 0 (pure dataset) Documentation

#17135 opened May 5, 2020 by partizanos

2

Fix documentation of default values in all classes Sprint good first issue help wanted

#15761 opened Dec 2, 2019 by cgsavard

80

score() and score_samples() Documentation

#16939 opened Apr 16, 2020 by LukeBeg

2

problem in clf.coef_ for MultinomialNB Documentation Easy module:naive_bayes

#15752 opened Dec 1, 2019 by Sandy4321

8

Document order of patches in extract_patches_2d Documentation module:feature_extraction

#16856 opened Apr 6, 2020 by anntzer

1

The empirical covariance is not unbiased Documentation

#17119 opened May 4, 2020 by ZeyuSun

1

OrdinalEncoder: Deprecate automatically assuming lexicographic ordering Easy

#14954 opened Sep 11, 2019 by jnothman

6

DOC Neural Net Module Uses bool for Verbose Toggle Documentation module:neural_network

#17067 opened Apr 28, 2020 by HanYaodong

Clarify that LeaveOneGroupOut is a particular case of GroupKFold Documentation module:model_selection

#16853 opened Apr 6, 2020 by onietosi

Documentation is wrong about KMeans.inertia_ Documentation module:cluster

#16594 opened Feb 28, 2020 by Volker-Weissmann

4

regression of sklearn.semi_supervised.LabelPropagation Documentation New Feature module:semi_supervised

#16522 opened Feb 22, 2020 by yujianyuanhaha

1

Update gridsearch example for multimetric scoring Documentation Easy

#15047 opened Sep 20, 2019 by amueller

1

check_estimator is stricter that what is stated in the Estimator API doc API Documentation module:utils

#16241 opened Jan 27, 2020 by ogrisel

25

Document/standardize how to skip network tests Documentation

#16750 opened Mar 23, 2020 by rth

10

Parameter n_classes in make_classification does not work as expected in extreme cases. Documentation

#16789 opened Mar 28, 2020 by oXwvdrbbj8S4wo9k8lSN

4

Feature request: Group aware Time-based cross validation Enhancement Moderate New Feature good first issue

#14257 opened Jul 4, 2019 by ogrisel

24

Misleading plot example for Isolation Forest method Documentation help wanted module:ensemble

#16113 opened Jan 13, 2020 by pedrormjunior

4

`sklearn.utils.multiclass.type_of_target` with sparse csr matrix raises ValueError Bug Easy Regression

#14860 opened Sep 1, 2019 by leonardbinet

1

Comparison of ML Algorithms Documentation

#16157 opened Jan 19, 2020 by Kapilam

11

Add callable metric support for KDTree algorithm Documentation Easy

#14131 opened Jun 20, 2019 by KacperKubara

16

No hyperparameter optimization example/tutorial incorporating warmstart Documentation

#16371 opened Feb 3, 2020 by cshih14

1

FunctionTransformer example is obsolete Documentation module:preprocessing

#16597 opened Feb 29, 2020 by glemaitre

5

"normalize" parameter in sklearn.linear_model should be "standardize" Documentation module:linear_model

#16445 opened Feb 14, 2020 by PythonRSAS

7

Rewrite user-guide to clarify feature_importances_ are impurity based Documentation Easy Sprint

#14528 opened Jul 30, 2019 by amueller

10

Attach and use sample properties in pipeline with custom transformers Documentation

#16161 opened Jan 20, 2020 by fjp

6

Ensure all attributes are documented Documentation Easy good first issue help wanted

#14312 opened Jul 12, 2019 by amueller

61

Run check_manifest in one of the CI setups Build / CI Easy help wanted

#13916 opened May 21, 2019 by jnothman

6

CCA documentation could be improved Documentation module:cross_decomposition

#16177 opened Jan 22, 2020 by mortonjt

2

Missing averaging over rows Documentation module:feature_selection

#16254 opened Jan 28, 2020 by tiborsekera

1

Provide an option to consider class prior in ComplementNB Easy good first issue help wanted

#14444 opened Jul 23, 2019 by qinhanmin2014

6

Add "anti-pattern" examples Documentation Easy help wanted

#14081 opened Jun 13, 2019 by NicolasHug

19

In PassiveAggressiveClassifier, inconsistency between the parameter "loss" and the attribute "loss_function_" Bug Documentation module:linear_model

#16270 opened Jan 29, 2020 by judithabk6

1

Possible error in documentation of ElasticNetCV() Documentation good first issue

#13117 opened Feb 8, 2019 by albertotb

4

Bad error messages in ClassifierChain on multioutput multiclass Easy good first issue

#13339 opened Feb 28, 2019 by amueller

11

Add a non-selectable shell prompt ($) to static shell blocks throughout the sphinx doc Documentation Enhancement

#15308 opened Oct 21, 2019 by ogrisel

2

Implementing partial_fit for NearestCentroid Easy Enhancement

#12952 opened Jan 10, 2019 by dirkpadfield

21

Doc/Discussion: Discrimination in examples and user guide

#16715 opened Mar 17, 2020 by lorentzenchr

5

CountVectorizer token_pattern issue with multi Alternative regex pattern. Bug Easy help wanted

#12971 opened Jan 13, 2019 by AMHZR

16

Better documentation for n_jobs Documentation Moderate help wanted

#14228 opened Jul 1, 2019 by NicolasHug

17

var_smoothing parameter of GaussianNB isn't documented nor tested Documentation

#14054 opened Jun 9, 2019 by NicolasHug

Stop generating pdf docs? Build / CI

#17051 opened Apr 26, 2020 by NicolasHug

15

tSNE with non-Euclidean metric should be able to square the distances API Easy Enhancement

#12401 opened Oct 17, 2018 by jnothman

9

GaussianProcessRegressor multi-output underlying mechanics? Documentation help wanted

#13989 opened May 30, 2019 by bread9

Remove fixes/compat for Python 2 Easy

#11991 opened Sep 3, 2018 by jnothman

8

johnson_lindenstrauss_min_dim gives result -2147483648 with n_samples = 100 and eps = 0.0001

#17111 opened May 3, 2020 by eldon97

2

Better error message when passing un-sortable data to the Encoders good first issue

#12621 opened Nov 20, 2018 by readyready15728

23

Add handle_missing and handle_unknown options to OrdinalEncoder New Feature module:preprocessing

#17123 opened May 4, 2020 by zachmayer

AdaBoost feature_importances_ should support base estimators with coef_ Easy Enhancement

#12137 opened Sep 23, 2018 by hermidalc

8

Validate MD5 checksum of downloaded ARFF in fetch_openml Easy Enhancement Sprint

#11816 opened Aug 15, 2018 by jnothman

6

Error on method_parameters with TSNE from sklearn with mahalanobis metric Easy Enhancement good first issue help wanted

#11793 opened Aug 10, 2018 by arm2arm

10

github action to build the doc on the master branch once per week and open a new github issue whenever any new FeatureWarning / DeprecationWarning is introduced Build / CI New Feature

#16317 opened Jan 30, 2020 by ogrisel

1

Look at lgtm.com alerts for last couple of months Easy good first issue help wanted

#12167 opened Sep 26, 2018 by jnothman

9

Allow NaNs for the target values in TransformedTargetRegressor Easy good first issue

#11339 opened Jun 21, 2018 by vahidbas

9

Tests raise Warnings in CI Linux pylatest_pip_openblas_pandas Build / CI

#16651 opened Mar 6, 2020 by cmarmo

3

TODO comment found in Glossary (Documentation) in Data Type section Documentation

#13533 opened Mar 27, 2019 by yc2311

3

OPTICS should support sparse matrices and precomputed distances Easy Enhancement help wanted

#11982 opened Sep 3, 2018 by jnothman

1

Add strategy="random" to SimpleImputer Easy New Feature

#11209 opened Jun 6, 2018 by ogrisel

11

column transformer assumes elements of get_feature_names() will be strings. module:feature_extraction

#16093 opened Jan 10, 2020 by mguptawork

2

DOC Equation for Bernoulli Naive Bayes

#15565 opened Nov 7, 2019 by 779817211

Tags for the example gallery?

#16601 opened Feb 29, 2020 by NicolasHug

5

*** AttributeError: 'int' object has no attribute 'item' for classification_report when output_dict=True module:metrics

#16998 opened Apr 22, 2020 by napsternxg

2

Create a python wrapper and unit test for the new `bounded_rand_int` C function used in LibSVM and LibLinear Moderate New Feature help wanted module:svm

#16862 opened Apr 7, 2020 by smarie

12

Metrics which are degenerate with a single sample should raise an error if passed a single sample Easy

#11435 opened Jul 5, 2018 by jnothman

6

Verbose Option for Classifier and Regressor Chains Enhancement

#16380 opened Feb 4, 2020 by jknix

2

Deprecate grid_scores_ everywhere, replace by cv_results_ Easy help wanted

#11198 opened Jun 4, 2018 by amueller

13

make_column_selector: support for cardinality selection module:compose

#15873 opened Dec 12, 2019 by mglowacki100

9

DBSCAN is missing _pairwise property Bug Easy good first issue

#11432 opened Jul 5, 2018 by jnothman

4

Adding Documentation about creating Virtual Environment for Contribution using Anaconda

#14756 opened Aug 24, 2019 by Pakigya

3

Better Documentation for Density Estimation

#15250 opened Oct 14, 2019 by project-delphi

Update the README file formatting

#15617 opened Nov 13, 2019 by erinkhoo

3

Extracting explained variance in SparsePCA Easy Enhancement Sprint help wanted

#11512 opened Jul 14, 2018 by kimrants

14

In `sklearn.naive_bayes`, `GaussianNB` model return an attribute called `sigma_`. Question module:naive_bayes

#16760 opened Mar 25, 2020 by TaiChiTiger

4

Copy button for code block Documentation

#12512 opened Nov 3, 2018 by thoo

8

Documentation paths are ambiguous on case insensitive file systems Documentation help wanted

#12712 opened Dec 2, 2018 by jnothman

8

CalibratedClassifierCV with mode = 'isotonic' has predict_proba return infinite probabilities Bug Easy Sprint help wanted

#10903 opened Apr 2, 2018 by LotusZephyr

9

Document the advantage of our new GBDT

#15392 opened Oct 29, 2019 by qinhanmin2014

7

A slice of a pipeline does not preserve the keyword arguments Bug module:pipeline

#16863 opened Apr 7, 2020 by pwl

2

Add L1 penalty and coordinate descent solver to TweedieRegression New Feature module:linear_model

#16637 opened Mar 4, 2020 by rth

2

BUG: sklearn/utils/multiclass.type_of_target inconsistent for similar inputs

#14671 opened Aug 16, 2019 by maxwell-aladago

10

WSGI timeouts when deployed to AWS Elasticbeanstalk Bug: triage

#16659 opened Mar 9, 2020 by MicBehrens

3

Promote SKLEARN_SEED for consideration in __init__.py itself

#15727 opened Nov 28, 2019 by yarikoptic

1

permutation_test_score has no user guide Documentation Easy good first issue

#10905 opened Apr 2, 2018 by amueller

5

Improve check for sparse dataframes

#16845 opened Apr 5, 2020 by jorisvandenbossche

2

Confusing error message in OrdinalEncoder with None-encoded missing values Bug module:preprocessing

#16703 opened Mar 16, 2020 by ogrisel

1

BernoulliNB and MultinomialNB documentation for alpha=0 Documentation Easy good first issue help wanted

#10772 opened Mar 7, 2018 by rmalouf

6

GMM covariance types examples overly complex / confusing Documentation Easy help wanted

#10863 opened Mar 23, 2018 by amueller

10

DOC make plot_lle_digits more consistent

#14226 opened Jul 1, 2019 by glemaitre

2

check_estimator assumes too much about 3rd-party estimators Bug module:utils

#16311 opened Jan 30, 2020 by kasparthommen

6

W and H switched in NMF docs? Documentation Easy good first issue help wanted

#10944 opened Apr 9, 2018 by amueller

11

Check that zero sample weight means samples are ignored

#16298 opened Jan 29, 2020 by rth

2

plot_precision_recall_curve and plot_roc_curve don't allow picking positive class Enhancement

#15573 opened Nov 8, 2019 by amueller

9

Improve check_classification_targets to warn users about large number of classes and avoid redundant computation API Enhancement

#16399 opened Feb 6, 2020 by ogrisel

1

CCA sets condition in pinv2 to match with scipy < 1.3

#15667 opened Nov 19, 2019 by thomasjpfan

sklearn.cluster.spectral_clustering fails with `np.matrix` input Easy help wanted

#10993 opened Apr 17, 2018 by Erotemic

10

Add benchmarks New Feature Performance

#16723 opened Mar 19, 2020 by rth

8

Enforce positive sample_weight Enhancement help wanted

#15531 opened Nov 3, 2019 by rth

9

LinearDiscriminantAnalysis.predict uses all dimensions, ignoring n_components New Feature

#16433 opened Feb 11, 2020 by fjhheras

7

FeatureAgglomeration documentation error

#15259 opened Oct 15, 2019 by JeanBaptisteScellier

DOC: No method signature shown in API doc when method uses a decorator Documentation

#11926 opened Aug 28, 2018 by albertcthomas

6

metrics.confusion_matrix far too slow for Boolean cases Performance

#15388 opened Oct 28, 2019 by GregoryMorse

17

Make _binary_clf_curve a "public" method? module:metrics

#16470 opened Feb 18, 2020 by Kornel

4

Random initialisation of GMM should consider data magnitude Easy Enhancement help wanted

#10850 opened Mar 21, 2018 by jnothman

2

Changed behavior for Sparse DictVectorizer regarding Explicit Zeros in Scipy 1.3.X

#14718 opened Aug 22, 2019 by desilinguist

4

OneVsRestClassifier's fit method does not accept kwargs Easy Enhancement help wanted

#10882 opened Mar 28, 2018 by klamann

13

Automatically force_all_finite=False in non-initial warm_start runs Easy Enhancement help wanted

#10600 opened Feb 7, 2018 by jnothman

4

Enable using 2SD scaling in StandardScaler Easy Enhancement help wanted

#10864 opened Mar 23, 2018 by twolodzko

14

Memory Error : Locally Linear Embedding Bug Easy Moderate help wanted

#10493 opened Jan 17, 2018 by ncherel

10

Failure of doctest for sklearn.cluster._bicluster.SpectralCoclustering on osx.

#15464 opened Nov 2, 2019 by lakrish

5

TfidfVectorizer ngrams does not work when vocabulary provided Bug module:feature_extraction

#16017 opened Jan 3, 2020 by tgsmith61591

9

Add MSLE(Mean Squared Logarithmic Error) to TreeRegressors New Feature module:tree

#16240 opened Jan 27, 2020 by ysunmi0427

7

Have Travis ensure that what's new is updated Build / CI Easy help wanted

#10451 opened Jan 11, 2018 by jnothman

11

Suggestion: Remove prediction from plot_confusion_matrix and just pass predicted labels module:model_selection

#15880 opened Dec 13, 2019 by jhennrich

41

Add MAPE as evaluation metric Easy Enhancement

#10708 opened Feb 26, 2018 by amueller

13

plot_gpr_prior_posterior.py unstable Documentation help wanted

#11562 opened Jul 16, 2018 by amueller

2

TruncatedSVD.fit(X).transform(X) is not the same as .fit_transform(X) Bug

#15144 opened Oct 7, 2019 by kiankd

6

Log likelihood of covariance incorrect? Bug module:covariance

#16300 opened Jan 30, 2020 by ashaffer

7

enet_path does not pass params to coordinate descent solver Easy help wanted

#10598 opened Feb 7, 2018 by jnothman

20

API for returning datasets as DataFrames Easy Enhancement Sprint good first issue

#10733 opened Mar 1, 2018 by jnothman

77

Add common test for .transform on different sparse formats help wanted

#14176 opened Jun 24, 2019 by rth

inf or -inf values in CV ruin the mean and std Bug good first issue help wanted

#10529 opened Jan 24, 2018 by icfly2

17

feature: verbose flag in cluster.DBscan Question

#14947 opened Sep 10, 2019 by sloev

3

Enable warnings on travis (and make sure they are reasonable) Easy help wanted

#10158 opened Nov 16, 2017 by amueller

26

FeatureHasher cant return order of found feature_names Easy Enhancement help wanted

#10470 opened Jan 14, 2018 by dreizehnutters

8

Enable IP Anonymization for the Google Analytics tracker of scikit-learn.org Documentation

#11499 opened Jul 12, 2018 by ogrisel

3

validation_curve and learning_curve should support fit_params Easy Enhancement good first issue

#10252 opened Dec 4, 2017 by jnothman

15

[Docs] Improving Cheat Sheet to include external knowledge

#13319 opened Feb 27, 2019 by srkunze

1

Add target for plot_roc_curve

#14607 opened Aug 8, 2019 by thomasjpfan

4

Parallel computing with nested cross-validation Documentation Easy good first issue help wanted

#10232 opened Nov 30, 2017 by mattvan83

14

Private instances exposed as public attributes

#14720 opened Aug 22, 2019 by rth

5

partial_dependence.py _grid_from_X ignores percentile specification unexpectedly Easy help wanted

#10372 opened Dec 26, 2017 by sungminkim31

2

License for rendered docs repo

#13171 opened Feb 15, 2019 by justinormont

1

Review hackery in KBinsDiscretizer

#14874 opened Sep 3, 2019 by amueller

1

Unexpected behavior of canonical correlation analysis (CCA)

#14169 opened Jun 23, 2019 by Shaul1321

3

[QST] Updating indices creation for split

#14036 opened Jun 6, 2019 by quasiben

17

Add common test for huge sparse matrix help wanted

#14483 opened Jul 26, 2019 by amueller

11

Make valid pairwise distance metrics (i.e. _VALID_METRICS variable) public Enhancement

#14229 opened Jul 1, 2019 by gokceneraslan

2

[AgglomerativeClustering] confusing parameter 'affinity' API

#13945 opened May 25, 2019 by ab-anssi

1

Transpose the clustering and classification comparisons Documentation

#9739 opened Sep 12, 2017 by jnothman

20

Gaussian Process kernel WhiteKernel has unhelpful "noise_level" documentation module:gaussian_process

#13605 opened Apr 10, 2019 by joseortiz3

8

Change KMeans n_init default value to 1. Easy

#9729 opened Sep 11, 2017 by amueller

12

Incorrect doc on GaussianProcessRegressor alpha (and example)

#13267 opened Feb 25, 2019 by Jwink3101

Use a safe and short repr in error messages and warning Easy

#9698 opened Sep 6, 2017 by GaelVaroquaux

13

Inconsistent documentation in neighbors/classification.py

#12995 opened Jan 16, 2019 by leotrs

4

Read-only X + copy=False Fails for most estimators API

#14481 opened Jul 26, 2019 by jeremiedbb

4

Add option to use different solver to LinearRegression Enhancement Performance

#14268 opened Jul 5, 2019 by ogrisel

7

calling ComplementNB.predict_proba with sparse X converts feature_log_prob_ to sparse

#13752 opened Apr 30, 2019 by kyle-pena-nlp

3

BaggingClassifier uses Class Label as Index to Array when Voting Bug

#13587 opened Apr 6, 2019 by nicholastoddsmith

3

OpenML: avoid warning when all versions are inactive help wanted

#14829 opened Aug 28, 2019 by rth

6

Remove the use of assert_raises and assert_raises_regex from the tests

#14216 opened Jun 28, 2019 by NicolasHug

27

Change default copy value from True to None Needs Decision

#13986 opened May 29, 2019 by rth

14

wrong input into entropy function

#14497 opened Jul 28, 2019 by minhsphuc12

10

More details about the Crammer-Singer method for LinearSVM

#13556 opened Apr 2, 2019 by xhlulu

2

scikit-learn/sklearn/manifold/locally_linear.py could have a parameter for metric type Easy

#9868 opened Oct 3, 2017 by aarondbaron

8

Benchmark NMF and SGDClassifier on MKL vs OpenBlas Easy help wanted

#9429 opened Jul 21, 2017 by amueller

27

Pandas Interoperability section in User Guide Documentation help wanted

#10453 opened Jan 11, 2018 by jnothman

1

Reference relevant tags in error messages raised by estimator checks

#13553 opened Apr 1, 2019 by NicolasHug

3

doctest SpectralCoclustering fails on Ubuntu arm64 help wanted

#13762 opened May 1, 2019 by xnox

2

Unclear behavior of max_train_size argument in TimeSeriesSplit

#13666 opened Apr 17, 2019 by mitar

2

Add instance-level calls to estimator_checks for meta-estimators Easy help wanted

#9443 opened Jul 24, 2017 by amueller

4

`test_fastica_simple[0-False]` failed in Linux py35_ubuntu_atlas

#14414 opened Jul 19, 2019 by thomasjpfan

sklearn.multiclass.OneVsRestClassifier documentation Documentation Easy

#9602 opened Aug 22, 2017 by kbrose

15

Stratified GroupKFold

#13621 opened Apr 11, 2019 by aditya1702

37

KBinsDiscretizer: allow nans Easy Enhancement

#9341 opened Jul 12, 2017 by jnothman

15

Need contribute docs on what to consider when building a meta-estimator Documentation Moderate Sprint help wanted

#10315 opened Dec 14, 2017 by jnothman

5

RFC Common internal optimizers API

#14248 opened Jul 3, 2019 by rth

1

New recommended ways to write (in)equality assertions in tests

#13180 opened Feb 17, 2019 by NicolasHug

4

precision_recall_curve should raise UndefinedMetricWarning when there are no true samples

#13043 opened Jan 24, 2019 by zjpoh

2

Add class_weight feature to MLPClassifier Easy Sprint

#9113 opened Jun 12, 2017 by lucasgreene

41

Inverse Transform for Label Encoder with mixed strings and numbers returns only strings Needs Decision

#9285 opened Jul 5, 2017 by goldsmitha

23

[idea] extend attributes of RFECV to indicate order of feature elimination Moderate help wanted

#13756 opened May 1, 2019 by arc12

4

Add non-strict mode to check_estimator Sprint

#13969 opened May 28, 2019 by amueller

10

add support for groups in train_test_split Documentation Easy good first issue

#9193 opened Jun 21, 2017 by dennisobrien

40

Scikit-learn doc could give more hints of it playing well with pandas Documentation

#10165 opened Nov 18, 2017 by chrish42

7

Warnings in common tests about set_params

#12652 opened Nov 22, 2018 by amueller

9

add three-fold split method train/val/test Moderate help wanted

#13990 opened May 30, 2019 by amueller

16

check_fit2d_1sample and check_fit2d_1feature expect very specific error message

#12734 opened Dec 7, 2018 by NicolasHug

5

Modify check_estimator to handle fit() additional keywords?

#13658 opened Apr 16, 2019 by madvoid

Issue a warning when columns that are completely NAN are removed during imputation? Documentation Easy help wanted

#8781 opened Apr 23, 2017 by samuelweisenthal

5

CalibratedClassifierCV doesn't interact properly with Pipeline estimators Easy Enhancement good first issue help wanted

#8710 opened Apr 6, 2017 by stoddardg

20

pca score/score_samples function throw ValueError when n_samples is less than n_features

#12489 opened Oct 30, 2018 by shilinng

Documentation error in GaussianMixture Documentation help wanted

#10141 opened Nov 14, 2017 by rdturnermtl

9

`pairwise_distances` produces wrong output for asymmetric similarity measures

#13403 opened Mar 6, 2019 by tttthomasssss

10

Chi2 ignoring False / 0 cases in X

#13102 opened Feb 6, 2019 by m-bilgic

1

BayesianGaussianMixture: Wrong documentation on mean_precision_prior

#12273 opened Oct 4, 2018 by gmeisl

5

Testcase for _pprint() is not present

#13159 opened Feb 13, 2019 by LakshKD

4

SGDClassifier: the validation of the parameters should be delayed until fit()

#13355 opened Mar 1, 2019 by maikia

3

pairwise_distances(X) should always have 0 diagonal

#12628 opened Nov 20, 2018 by jnothman

6

Cluster evaluation user guide should be split in supervised and unsupervised, possibly with a table summarizing them. Documentation Easy

#8646 opened Mar 25, 2017 by amueller

7

BallTree assumes samples can be added component-wise

#12697 opened Nov 29, 2018 by pkomiske

1

Online implementation of Non-negative Matrix Factorizarion (NMF) New Feature module:decomposition

#13308 opened Feb 27, 2019 by pcerda

18

Add example of creating a static transformer for transfer learning using joblib or onnx deserialisation

#13288 opened Feb 26, 2019 by jnothman

6

API Inconsitency of predict and predict_proba in SVC Bug Needs Decision

#13211 opened Feb 21, 2019 by rth

44

Tests for sample order invariance in estimator_checks Easy

#8695 opened Apr 3, 2017 by jnothman

9

Fix / simplify margin plotting in SVM examples Documentation Easy

#8501 opened Mar 3, 2017 by amueller

9

MultiOutputClassifier doesn't support sparse y Easy help wanted

#8730 opened Apr 12, 2017 by fedorzh

8

Implement `nbytes` or `__sizeof__` (or equivalent) for estimators Easy Enhancement good first issue

#8642 opened Mar 24, 2017 by jcrist

22

TST check_transformers_unfitted not run on some transformers

#12967 opened Jan 12, 2019 by rth

6

new feature: add LOBPCG as an SVD solver in PCA

#12079 opened Sep 14, 2018 by lobpcg

4

Non-standard density estimation scores Documentation Easy help wanted

#8327 opened Feb 9, 2017 by rfeinman

4

PERF: use higher level BLAS functions Sprint

#13210 opened Feb 21, 2019 by jeremiedbb

6

Add more didactic scaling example?

#12282 opened Oct 4, 2018 by amueller

Should all test cases set the random_state? Easy

#8194 opened Jan 12, 2017 by erikcs

12

Remove Hardcoded Thresholds in Repr

#11897 opened Aug 23, 2018 by ben-ix

5

doc suggestion for GaussianProcessRegressor -- alpha --

#11770 opened Aug 7, 2018 by ggrrll

Docstring of Gaussian processes kernel wrong about the calculation of gradient Documentation Easy

#8393 opened Feb 18, 2017 by dalmia

3

Add calibration curve to plotting module Easy

#8425 opened Feb 21, 2017 by amueller

12

Add paired test for cross-validation Enhancement Moderate Sprint help wanted

#12730 opened Dec 6, 2018 by amueller

16

PendingDeprecationWarning: the matrix subclass is not the recommended way to represent matrices

#12327 opened Oct 8, 2018 by rth

39

new feature: add LOBPCG solver to Truncated PCA

#12080 opened Sep 14, 2018 by lobpcg

2

add clustering examples from 2017 Streaming Partition MIT/AWS/IEEE Challenge Datasets with Known Truth Partitions

#12235 opened Oct 1, 2018 by lobpcg

1

new feature: add clusterQR method to 'kmeans' and 'discretize' in spectral clustering

#12164 opened Sep 26, 2018 by lobpcg

4

Error when using sklearn.Decomposition.LatentDirichletAllocation

#11854 opened Aug 18, 2018 by zihao12

1

Tutorial on how to create a new kernel? Documentation help wanted module:gaussian_process

#9601 opened Aug 22, 2017 by DiegoRomeres

7

Adding a robots.txt to the website Documentation

#8958 opened May 30, 2017 by GaelVaroquaux

3

KBinsDiscretizer(strategy='quantile') should subsample the training data when n_samples > 1e5 help wanted

#12492 opened Oct 30, 2018 by ogrisel

5

PLS returns components in an inconsistent (and often incorrect) order

#11645 opened Jul 20, 2018 by idc9

Label Spreading: knn Kernel Variant differs from Reference Paper

#11784 opened Aug 9, 2018 by markusdosch

5

Dask Joblib backend cancels required futures Bug

#12315 opened Oct 6, 2018 by mrocklin

2

Allow alpha in GaussianProcessRegressor at fit time? Easy

#7821 opened Nov 3, 2016 by MechCoder

2

non_negative_factorization's 'regularize' parameter is lost in the OO interface Easy Enhancement good first issue

#12520 opened Nov 5, 2018 by sebastiantiesmeyer

5

Obscure remark about removing pos_label from weighted f1 score

#11148 opened May 26, 2018 by amueller

7

Relationship between different Group-based (and perhaps general) CV splitters should be better explained Documentation help wanted

#9385 opened Jul 17, 2017 by jnothman

3

Public n_features_ attribute in BaseBagging

#12260 opened Oct 3, 2018 by albertcthomas

3

Improve documentation: consistent scoring functions

#10584 opened Feb 4, 2018 by lorentzenchr

3

Common tests: no print to stdout?

#11885 opened Aug 21, 2018 by amueller

2

Issues with negative values in sample_weight

#12464 opened Oct 26, 2018 by agamemnonc

5

fetch_openml: Return a numeric target for multilabel problems Enhancement Moderate help wanted

#11820 opened Aug 15, 2018 by jnothman

2

Inconsistency between predict and predict_proba parameters in Pipeline

#12006 opened Sep 5, 2018 by Noctiphobia

6

Use Napoleon instead of Numpydoc ?

#11440 opened Jul 5, 2018 by jeremiedbb

7

Add common tests for pairwise non-classifiers Enhancement help wanted

#11433 opened Jul 5, 2018 by jnothman

Make sklearn.feature_selection.f_classif raise warn on float y?

#11331 opened Jun 20, 2018 by qpwo

2

Discrepancy on Manua Loa CO2 concentration example

#11781 opened Aug 8, 2018 by ggrrll

2

Liblinear convergence failure everywhere? High Priority

#11536 opened Jul 15, 2018 by amueller

70

Adding support for sparse label matrix in coverage_error.

#11348 opened Jun 23, 2018 by elanmart

3

use extras_require in setup.py

#11361 opened Jun 26, 2018 by twosigmajab

3

VotingClassifier .fit() does not trigger setting .model attribute for KerasClassifier objects

#12129 opened Sep 21, 2018 by LarsDu

9

fetch_openml: Maybe download task information as well as dataset Enhancement Moderate help wanted

#11824 opened Aug 15, 2018 by jnothman

11

Add sample weights to calibration curve

#11352 opened Jun 25, 2018 by samronsin

Node values don't add upto number of samples in the outputs of export_graphviz

#10877 opened Mar 26, 2018 by cocoaaa

1

Refactor tests for sample weights Moderate Sprint help wanted

#11316 opened Jun 19, 2018 by jnothman

2

calinski_harabaz_score not used in any example, unclear when to use Documentation help wanted

#8647 opened Mar 25, 2017 by amueller

4

Does `feature_extraction.fit_transform` return term-document matrix or document-term matrix?

#10226 opened Nov 29, 2017 by ugultopu

3

Add common test for classifiers reducing to less than two classes via sample weights during fit

#10337 opened Dec 18, 2017 by gxyd

10

make precision_recall_curve plots less confusing Easy Sprint help wanted

#7372 opened Sep 8, 2016 by amueller

3

Treat Predict as a Numpy Generalized Ufunc

#11456 opened Jul 7, 2018 by mrocklin

7

Document what cost function LogisticRegression minimizes for each solver

#10164 opened Nov 17, 2017 by stuz5000

3

arguments to fit in "rolling your own estimator" Documentation Easy

#7142 opened Aug 4, 2016 by amueller

2

Misleading kernel PCA example

#10530 opened Jan 24, 2018 by dkirkby

3

No complete list of necessary checks for creating new classes in the docs (or anywhere else).

#10082 opened Nov 7, 2017 by voxmenthe

5

Add sklearn.dataset.fetch_bbc and sklearn.dataset.fetch_bbcsport Moderate New Feature help wanted

#10498 opened Jan 18, 2018 by ogrisel

10

Test - sklearn/utils/estimator_checks.py::check_supervised_y_2d does not clone estimator

#10977 opened Apr 14, 2018 by omtinez

1

predict_proba documentation is inconsistent. Documentation help wanted

#8077 opened Dec 19, 2016 by aryamccarthy

16

Roadmap for Static Type Hints in Low-level Algorithms

#11170 opened May 30, 2018 by chrisconlan

10

Possible issue in MLP code Documentation Easy help wanted

#6780 opened May 14, 2016 by mblondel

21

set_params fn for pipeline to maintain order of parameters

#10439 opened Jan 9, 2018 by janvanrijn

2

Improve RidgeCV exception message when called with `store_cv_values=False`

#10525 opened Jan 24, 2018 by maykulkarni

3

whitespace is a terrible separator for feature names in PolynomialFeatures.get_feature_names

#10742 opened Mar 2, 2018 by amueller

8

Add sklearn.metrics.cumulative_gain_curve and sklearn.metrics.lift_curve New Feature

#10003 opened Oct 25, 2017 by reiinakano

4

MAINT Use Cython memoryviews

#10624 opened Feb 12, 2018 by rth

26

NMF n_components are not properly getting reflected in output when using Grid Search CV Bug help wanted

#10329 opened Dec 15, 2017 by patmonsoon

25

solver 'lbfgs' in MLPRegressor doesn't print debug info when verbose=True

#10236 opened Dec 1, 2017 by guidobiosca

4

Incorrect Clusters Due To Dtype Mismatch Bug Sprint

#10832 opened Mar 18, 2018 by Wikilicious

1

GaussianMixture default 'tol' parameter too large?

#10122 opened Nov 13, 2017 by ashimb9

3

Improve test for MDS parallel processing case - requires update in MDS help wanted

#10119 opened Nov 13, 2017 by jsoutherland

2

Multioutput-multiclass estimators have broken score method. API Bug

#9414 opened Jul 19, 2017 by amueller

9

LassoLarsIC delivers wrong `coef_` when the model can fit the data with variance 0

#10641 opened Feb 15, 2018 by martin-hahn

6

Better default min_samples for RANSACRegressor? Easy

#6437 opened Feb 23, 2016 by MechCoder

12

Test docstrings for parameters are equal help wanted

#9388 opened Jul 17, 2017 by jnothman

6

Feature request: include mean absolute error (MAE) loss in sklearn.linear_model.ElasticNet and ElasticNetCV

#9779 opened Sep 15, 2017 by atorch

8

sklearn.datasets.make_classification should have a n_targets parameter Easy

#6162 opened Jan 13, 2016 by MechCoder

6

[DOC] SGDClassifier docs missing methods predict_log_proba and predict_proba in table of contents

#8749 opened Apr 15, 2017 by kjacks21

2

Votingclassifier uses arithmetic mean. Should be taking a mean of log odds.

#9933 opened Oct 16, 2017 by RyanCarey

14