LCDB (Learning Curve DataBase)

LCDB is a set of pre-computed learning curves of common learners on a variety of datasets. You can easily access it via an API we describe here.

Installation

pip install lcdb

Example Notebook

We strongly encourage to check out the example notebook in python/example-usage.ipynb. It contains all the code of this tutorial, and also shows how to get an overview of all the contained datasets.

Getting a Learning Curve

By default, you receive the learning curve for accuracy (see below for other metrics). Learning curves contain observations at powers of $\sqrt{2}$, i.e. 16, 24, 32, 45, 64, 91, 128, ... until 90% of the dataset size (also if this is not a power of $\sqrt{2}$. Since datasets have different sizes, the schedules have different lengths for different datasets, which is why there is no tensor view on the data.

By Dataset Name

curve = lcdb.get_curve("kr-vs-kp", "sklearn.linear_model.LogisticRegression")
anchors, scores_train, scores_valid, scores_test = curve

The first argument is the dataset name or the dataset id of openml.org. The second argument is the name of the learner.

By OpenML ID

curve = lcdb.get_curve(3, "sklearn.linear_model.LogisticRegression")
anchors, scores_train, scores_valid, scores_test = curve

For Other Metrics

The metric is the third positional argument. Here, we get the curve for log-loss

curve_log_loss = lcdb.get_curve("kr-vs-kp", "sklearn.linear_model.LogisticRegression", "logloss")

Currently supported metrics: accuracy, logloss

We maintain the full prediction vectors and probability distributions offline, so if you want to add some metric, please let us know and we will compute it and add it to the repository.

Plotting Curves

Of course, you can plot the curves with any tool you want. There are some built-ins though.

Quicky

lcdb.plot_train_and_test_curve(curve)

will give you

With your own axis objects

import matplotlib.pyplot as plt
fig, ax = plt.subplots(1, 2, figsize=(20, 4))
lcdb.plot_train_and_test_curve(curve, ax[0])
ax[0].set_ylabel("Accuracy")
lcdb.plot_train_and_test_curve(curve_log_loss, ax[1])
ax[1].set_ylabel("Log-Loss")
plt.show()

will give you

Training Times

You can also get the training times of the learners.

Times per Anchor

lcdb.get_train_times("kr-vs-kp", "sklearn.linear_model.LogisticRegression")

Plot Training Times

Quicky

lcdb.plot_train_times("kr-vs-kp", "sklearn.linear_model.LogisticRegression")

will give you

With your axis objects

fig, ax = plt.subplots()
lcdb.plot_train_times("kr-vs-kp", "sklearn.linear_model.LogisticRegression", ax)
lcdb.plot_train_times("kr-vs-kp", "SVC_linear", ax)

will give you

Meta-Features

All datasets come with pre-computed meta-features. You can retrieve these as follows:

Dataframe with Meta-Features for all Datasets

lcdb.get_meta_features()

Dictionary with Meta-Features for Specific Dataset

lcdb.get_meta_features("kr-vs-kp") # by name
lcdb.get_meta_features("3) # by openml.org id

Citing LCDB

If you use our database and find it helfpul, please cite the ECML paper:

@inproceedings{lcdb,
  title={LCDB 1.0: An Extensive Learning Curves Database for Classification Tasks},
  author={Mohr, Felix and Viering, Tom J and Loog, Marco and van Rijn, Jan N},
  booktitle = {Machine Learning and Knowledge Discovery in Databases. Research Track - European Conference, {ECML} {PKDD} 2022, Grenoble, France, September 19-24, 2022},
  year={2022}
}

Supported Learners

These are the 20 supported learners (all of them executed with standard parametrization):

• SVC_linear
• SVC_poly
• SVC_rbf
• SVC_sigmoid
• sklearn.tree.DecisionTreeClassifier
• sklearn.tree.ExtraTreeClassifier
• sklearn.linear_model.LogisticRegression
• sklearn.linear_model.PassiveAggressiveClassifier
• sklearn.linear_model.Perceptron
• sklearn.linear_model.RidgeClassifier
• sklearn.linear_model.SGDClassifier
• sklearn.neural_network.MLPClassifier
• sklearn.discriminant_analysis.LinearDiscriminantAnalysis
• sklearn.discriminant_analysis.QuadraticDiscriminantAnalysis
• sklearn.naive_bayes.BernoulliNB
• sklearn.naive_bayes.MultinomialNB
• sklearn.neighbors.KNeighborsClassifier
• sklearn.ensemble.ExtraTreesClassifier
• sklearn.ensemble.RandomForestClassifier
• sklearn.ensemble.GradientBoostingClassifier

Currently Maintained Datasets

• 3 (kr-vs-kp)
• 6 (letter)
• 12 (mfeat-factors)
• 14 (mfeat-fourier)
• 16 (mfeat-karhunen)
• 18 (mfeat-morphological)
• 21 (car)
• 22 (mfeat-zernike)
• 23 (cmc)
• 24 (mushroom)
• 26 (nursery)
• 28 (optdigits)
• 30 (page-blocks)
• 31 (credit-g)

(pendigits)

• 36 (segment)
• 38 (sick)
• 44 (spambase)
• 46 (splice)
• 54 (vehicle)
• 57 (hypothyroid)
• 60 (waveform-5000)
• 179 (adult)
• 180 (covertype)
• 181 (yeast)
• 182 (satimage)
• 183 (abalone)
• 184 (kropt)
• 185 (baseball)
• 188 (eucalyptus)
• 273 (IMDB.drama)
• 293 (covertype)
• 300 (isolet)
• 351 (codrna)
• 354 (poker)
• 357 (vehicle_sensIT)
• 389 (fbis.wc)
• 390 (new3s.wc)
• 391 (re0.wc)
• 392 (oh0.wc)
• 393 (la2s.wc)
• 395 (re1.wc)
• 396 (la1s.wc)
• 398 (wap.wc)
• 399 (ohscal.wc)
• 401 (oh10.wc)
• 485 (analcatdata_vehicle)
• 554 (mnist_784)
• 679 (rmftsa_sleepdata)
• 715 (fri_c3_1000_25)
• 718 (fri_c4_1000_100)
• 720 (abalone)
• 722 (pol)
• 723 (fri_c4_1000_25)
• 727 (2dplanes)
• 728 (analcatdata_supreme)
• 734 (ailerons)
• 735 (cpu_small)
• 737 (space_ga)
• 740 (fri_c3_1000_10)
• 741 (rmftsa_sleepdata)
• 743 (fri_c1_1000_5)
• 751 (fri_c4_1000_10)
• 752 (puma32H)
• 761 (cpu_act)
• 772 (quake)
• 797 (fri_c4_1000_50)
• 799 (fri_c0_1000_5)
• 803 (delta_ailerons)
• 806 (fri_c3_1000_50)
• 807 (kin8nm)
• 813 (fri_c3_1000_5)
• 816 (puma8NH)
• 819 (delta_elevators)
• 821 (house_16H)
• 822 (cal_housing)
• 823 (houses)
• 833 (bank32nh)
• 837 (fri_c1_1000_50)
• 843 (house_8L)
• 845 (fri_c0_1000_10)
• 846 (elevators)
• 847 (wind)
• 849 (fri_c0_1000_25)
• 866 (fri_c2_1000_50)
• 871 (pollen)
• 881 (mv)
• 897 (colleges_aaup)
• 901 (fried)
• 903 (fri_c2_1000_25)
• 904 (fri_c0_1000_50)
• 910 (fri_c1_1000_10)
• 912 (fri_c2_1000_5)
• 913 (fri_c2_1000_10)
• 914 (balloon)
• 917 (fri_c1_1000_25)
• 923 (visualizing_soil)
• 930 (colleges_usnews)
• 934 (socmob)
• 953 (splice)
• 958 (segment)
• 959 (nursery)
• 962 (mfeat-morphological)
• 966 (analcatdata_halloffame)
• 971 (mfeat-fourier)
• 976 (JapaneseVowels)
• 977 (letter)
• 978 (mfeat-factors)
• 979 (waveform-5000)
• 980 (optdigits)
• 991 (car)
• 993 (kdd_ipums_la_97-small)
• 995 (mfeat-zernike)
• 1000 (hypothyroid)
• 1002 (ipums_la_98-small)
• 1018 (ipums_la_99-small)
• 1019 (pendigits)
• 1020 (mfeat-karhunen)
• 1021 (page-blocks)
• 1036 (sylva_agnostic)
• 1037 (ada_prior)
• 1039 (hiva_agnostic)
• 1040 (sylva_prior)
• 1041 (gina_prior2)
• 1042 (gina_prior)
• 1049 (pc4)
• 1050 (pc3)
• 1053 (jm1)
• 1059 (ar1)
• 1067 (kc1)
• 1068 (pc1)
• 1069 (pc2)
• 1111 (KDDCup09_appetency)
• 1116 (musk)
• 1119 (adult-census)
• 1120 (MagicTelescope)
• 1128 (OVA_Breast)
• 1130 (OVA_Lung)
• 1134 (OVA_Kidney)
• 1138 (OVA_Uterus)
• 1139 (OVA_Omentum)
• 1142 (OVA_Endometrium)
• 1146 (OVA_Prostate)
• 1161 (OVA_Colon)
• 1166 (OVA_Ovary)
• 1216 (Click_prediction_small)
• 1242 (vehicleNorm)
• 1457 (amazon-commerce-reviews)
• 1461 (bank-marketing)
• 1464 (blood-transfusion-service-center)
• 1468 (cnae-9)
• 1475 (first-order-theorem-proving)
• 1485 (madelon)
• 1486 (nomao)
• 1487 (ozone-level-8hr)
• 1489 (phoneme)
• 1494 (qsar-biodeg)
• 1501 (semeion)
• 1515 (micro-mass)
• 1569 (poker-hand)
• 1590 (adult)
• 4134 (Bioresponse)
• 4135 (Amazon_employee_access)
• 4136 (Dexter)
• 4137 (Dorothea)
• 4534 (PhishingWebsites)
• 4538 (GesturePhaseSegmentationProcessed)
• 4541 (Diabetes130US)
• 4552 (BachChoralHarmony)
• 23380 (cjs)
• 23512 (higgs)
• 23517 (numerai28.6)
• 40497 (thyroid-ann)
• 40498 (wine-quality-white)
• 40668 (connect-4)
• 40670 (dna)
• 40685 (shuttle)
• 40691 (wine-quality-red)
• 40701 (churn)
• 40900 (Satellite)
• 40926 (CIFAR_10_small)
• 40971 (collins)
• 40975 (car)
• 40978 (Internet-Advertisements)
• 40981 (Australian)
• 40982 (steel-plates-fault)
• 40983 (wilt)
• 40984 (segment)
• 40996 (Fashion-MNIST)
• 41026 (gisette)
• 41027 (jungle_chess_2pcs_raw_endgame_complete)
• 41064 (convex)
• 41065 (mnist_rotation)
• 41066 (secom)
• 41138 (APSFailure)
• 41142 (christine)
• 41143 (jasmine)
• 41144 (madeline)
• 41145 (philippine)
• 41146 (sylvine)
• 41147 (albert)
• 41150 (MiniBooNE)
• 41156 (ada)
• 41157 (arcene)
• 41158 (gina)
• 41159 (guillermo)
• 41161 (riccardo)
• 41162 (kick)
• 41163 (dilbert)
• 41164 (fabert)
• 41165 (robert)
• 41166 (volkert)
• 41167 (dionis)
• 41168 (jannis)
• 41169 (helena)
• 41946 (Sick_numeric)
• 42732 (sf-police-incidents)
• 42733 (Click_prediction_small)
• 42734 (okcupid-stem)