xverse short for X uniVerse is a Python module for machine learning in the space of feature engineering, feature transformation and feature selection.
Currently, xverse package handles only binary target.
The package requires numpy, pandas, scikit-learn, scipy and statsmodels. In addition, the package is tested on Python version 3.5 and above.
To install the package, download this folder and execute:
python setup.py installor from command line execute
pip install xverseTo install the development version, you can use
pip install --upgrade git+https://github.com/Sundar0989/XuniVerseStill have issues installing. Please refer to the 'install_help' directory to walk you through steps.
XVerse module is fully compatible with sklearn transformers, so they can be used in pipelines or in your existing scripts. Currently, it supports only Pandas dataframes.
from xverse.transformer import MonotonicBinning
clf = MonotonicBinning()
clf.fit(X, y)
print(clf.bins){'age': array([19., 35., 45., 87.]),
'balance': array([-3313. , 174. , 979.33333333, 71188. ]),
'campaign': array([ 1., 3., 50.]),
'day': array([ 1., 12., 20., 31.]),
'duration': array([ 4. , 128. , 261.33333333, 3025. ]),
'pdays': array([-1.00e+00, -5.00e-01, 1.00e+00, 8.71e+02]),
'previous': array([ 0., 1., 25.])}
from xverse.transformer import WOE
clf = WOE()
clf.fit(X, y)
print(clf.woe_df.head()) #Weight of Evidence transformation dataset+---+---------------+--------------------+-------+-------+-----------+---------------------+--------------------+---------------------+------------------------+----------------------+---------------------+
| | Variable_Name | Category | Count | Event | Non_Event | Event_Rate | Non_Event_Rate | Event_Distribution | Non_Event_Distribution | WOE | Information_Value |
+---+---------------+--------------------+-------+-------+-----------+---------------------+--------------------+---------------------+------------------------+----------------------+---------------------+
| 0 | age | (18.999, 35.0] | 1652 | 197 | 1455 | 0.11924939467312348 | 0.8807506053268765 | 0.3781190019193858 | 0.36375 | 0.038742147481056366 | 0.02469286279236605 |
+---+---------------+--------------------+-------+-------+-----------+---------------------+--------------------+---------------------+------------------------+----------------------+---------------------+
| 1 | age | (35.0, 45.0] | 1388 | 129 | 1259 | 0.09293948126801153 | 0.9070605187319885 | 0.2476007677543186 | 0.31475 | -0.2399610313340142 | 0.02469286279236605 |
+---+---------------+--------------------+-------+-------+-----------+---------------------+--------------------+---------------------+------------------------+----------------------+---------------------+
| 2 | age | (45.0, 87.0] | 1481 | 195 | 1286 | 0.13166779203241052 | 0.8683322079675895 | 0.3742802303262956 | 0.3215 | 0.15200725211484276 | 0.02469286279236605 |
+---+---------------+--------------------+-------+-------+-----------+---------------------+--------------------+---------------------+------------------------+----------------------+---------------------+
| 3 | balance | (-3313.001, 174.0] | 1512 | 133 | 1379 | 0.08796296296296297 | 0.9120370370370371 | 0.255278310940499 | 0.34475 | -0.3004651512228873 | 0.06157421302850976 |
+---+---------------+--------------------+-------+-------+-----------+---------------------+--------------------+---------------------+------------------------+----------------------+---------------------+
| 4 | balance | (174.0, 979.333] | 1502 | 163 | 1339 | 0.1085219707057257 | 0.8914780292942743 | 0.31285988483685223 | 0.33475 | -0.06762854653574929 | 0.06157421302850976 |
+---+---------------+--------------------+-------+-------+-----------+---------------------+--------------------+---------------------+------------------------+----------------------+---------------------+
print(clf.iv_df) #Information value dataset+----+---------------+------------------------+
| | Variable_Name | Information_Value |
+----+---------------+------------------------+
| 6 | duration | 1.1606798895024775 |
+----+---------------+------------------------+
| 14 | poutcome | 0.4618899274360784 |
+----+---------------+------------------------+
| 12 | month | 0.37953277364723703 |
+----+---------------+------------------------+
| 3 | contact | 0.2477624664660033 |
+----+---------------+------------------------+
| 13 | pdays | 0.20326698063078097 |
+----+---------------+------------------------+
| 15 | previous | 0.1770811514357682 |
+----+---------------+------------------------+
| 9 | job | 0.13251854742728092 |
+----+---------------+------------------------+
| 8 | housing | 0.10655553101753026 |
+----+---------------+------------------------+
| 1 | balance | 0.06157421302850976 |
+----+---------------+------------------------+
| 10 | loan | 0.06079091829519839 |
+----+---------------+------------------------+
| 11 | marital | 0.04009032555607127 |
+----+---------------+------------------------+
| 7 | education | 0.03181211694236827 |
+----+---------------+------------------------+
| 0 | age | 0.02469286279236605 |
+----+---------------+------------------------+
| 2 | campaign | 0.019350877455830695 |
+----+---------------+------------------------+
| 4 | day | 0.0028156288525541884 |
+----+---------------+------------------------+
| 5 | default | 1.6450124824351054e-05 |
+----+---------------+------------------------+
+-------------------+-----------------------------+
| Information Value | Variable Predictiveness |
+-------------------+-----------------------------+
| Less than 0.02 | Not useful for prediction |
+-------------------+-----------------------------+
| 0.02 to 0.1 | Weak predictive Power |
+-------------------+-----------------------------+
| 0.1 to 0.3 | Medium predictive Power |
+-------------------+-----------------------------+
| 0.3 to 0.5 | Strong predictive Power |
+-------------------+-----------------------------+
| >0.5 | Suspicious Predictive Power |
+-------------------+-----------------------------+
clf.transform(X) #apply WOE transformation on the datasetfrom xverse.ensemble import VotingSelector
clf = VotingSelector()
clf.fit(X, y)
print(clf.available_techniques)['WOE', 'RF', 'RFE', 'ETC', 'CS', 'L_ONE']
clf.feature_importances_+----+---------------+------------------------+-----------------------+-------------------------------+----------------------+----------------------+-------------------------+
| | Variable_Name | Information_Value | Random_Forest | Recursive_Feature_Elimination | Extra_Trees | Chi_Square | L_One |
+----+---------------+------------------------+-----------------------+-------------------------------+----------------------+----------------------+-------------------------+
| 0 | duration | 1.1606798895024775 | 0.29100016518065835 | 0.0 | 0.24336032789230097 | 62.53045588382914 | 0.0009834060765907017 |
+----+---------------+------------------------+-----------------------+-------------------------------+----------------------+----------------------+-------------------------+
| 1 | poutcome | 0.4618899274360784 | 0.05975563617541324 | 0.8149539108454378 | 0.07291945099022576 | 209.1788690088815 | 0.27884071686005385 |
+----+---------------+------------------------+-----------------------+-------------------------------+----------------------+----------------------+-------------------------+
| 2 | month | 0.37953277364723703 | 0.09472524644853274 | 0.6270707318033509 | 0.10303345973615481 | 54.81011477300214 | 0.18763733424335785 |
+----+---------------+------------------------+-----------------------+-------------------------------+----------------------+----------------------+-------------------------+
| 3 | contact | 0.2477624664660033 | 0.018358265986906014 | 0.45594899004325673 | 0.029325952072445132 | 25.357947712611868 | 0.04876094100065351 |
+----+---------------+------------------------+-----------------------+-------------------------------+----------------------+----------------------+-------------------------+
| 4 | pdays | 0.20326698063078097 | 0.04927368012222067 | 0.0 | 0.02738001362078519 | 13.808925800391403 | -0.00026932622581396677 |
+----+---------------+------------------------+-----------------------+-------------------------------+----------------------+----------------------+-------------------------+
| 5 | previous | 0.1770811514357682 | 0.02612886929056733 | 0.0 | 0.027197295919351088 | 13.019278420681164 | 0.0 |
+----+---------------+------------------------+-----------------------+-------------------------------+----------------------+----------------------+-------------------------+
| 6 | job | 0.13251854742728092 | 0.050024353325485646 | 0.5207956132479409 | 0.05775450997836301 | 13.043319831003855 | 0.11279310830899944 |
+----+---------------+------------------------+-----------------------+-------------------------------+----------------------+----------------------+-------------------------+
| 7 | housing | 0.10655553101753026 | 0.021126744587568032 | 0.28135643347861894 | 0.020830177741565564 | 28.043094016887064 | 0.0 |
+----+---------------+------------------------+-----------------------+-------------------------------+----------------------+----------------------+-------------------------+
| 8 | balance | 0.06157421302850976 | 0.0963543249575152 | 0.0 | 0.08429423739161768 | 0.03720300378031974 | -1.3553979494412002e-06 |
+----+---------------+------------------------+-----------------------+-------------------------------+----------------------+----------------------+-------------------------+
| 9 | loan | 0.06079091829519839 | 0.008783347837152861 | 0.6414812505459246 | 0.013652849211750306 | 3.4361027026756084 | 0.0 |
+----+---------------+------------------------+-----------------------+-------------------------------+----------------------+----------------------+-------------------------+
| 10 | marital | 0.04009032555607127 | 0.02648832289940045 | 0.9140684291962617 | 0.03929791951230852 | 10.889749514307464 | 0.0 |
+----+---------------+------------------------+-----------------------+-------------------------------+----------------------+----------------------+-------------------------+
| 11 | education | 0.03181211694236827 | 0.02757205345952717 | 0.21529148795958114 | 0.03980467391633981 | 4.70588768051867 | 0.0 |
+----+---------------+------------------------+-----------------------+-------------------------------+----------------------+----------------------+-------------------------+
| 12 | age | 0.02469286279236605 | 0.10164634631051869 | 0.0 | 0.08893247762137796 | 0.6818947945319156 | -0.004414426121909251 |
+----+---------------+------------------------+-----------------------+-------------------------------+----------------------+----------------------+-------------------------+
| 13 | campaign | 0.019350877455830695 | 0.04289312347011537 | 0.0 | 0.05716486374991612 | 1.8596566731099653 | -0.012650844735972498 |
+----+---------------+------------------------+-----------------------+-------------------------------+----------------------+----------------------+-------------------------+
| 14 | day | 0.0028156288525541884 | 0.083859807784465 | 0.0 | 0.09056623672332145 | 0.08687716739873641 | -0.00231307077371602 |
+----+---------------+------------------------+-----------------------+-------------------------------+----------------------+----------------------+-------------------------+
| 15 | default | 1.6450124824351054e-05 | 0.0020097121639531665 | 0.0 | 0.004485553922176626 | 0.007542737902818529 | 0.0 |
+----+---------------+------------------------+-----------------------+-------------------------------+----------------------+----------------------+-------------------------+
clf.feature_votes_+----+---------------+-------------------+---------------+-------------------------------+-------------+------------+-------+-------+
| | Variable_Name | Information_Value | Random_Forest | Recursive_Feature_Elimination | Extra_Trees | Chi_Square | L_One | Votes |
+----+---------------+-------------------+---------------+-------------------------------+-------------+------------+-------+-------+
| 1 | poutcome | 1 | 1 | 1 | 1 | 1 | 1 | 6 |
+----+---------------+-------------------+---------------+-------------------------------+-------------+------------+-------+-------+
| 2 | month | 1 | 1 | 1 | 1 | 1 | 1 | 6 |
+----+---------------+-------------------+---------------+-------------------------------+-------------+------------+-------+-------+
| 6 | job | 1 | 1 | 1 | 1 | 1 | 1 | 6 |
+----+---------------+-------------------+---------------+-------------------------------+-------------+------------+-------+-------+
| 0 | duration | 1 | 1 | 0 | 1 | 1 | 1 | 5 |
+----+---------------+-------------------+---------------+-------------------------------+-------------+------------+-------+-------+
| 3 | contact | 1 | 0 | 1 | 0 | 1 | 1 | 4 |
+----+---------------+-------------------+---------------+-------------------------------+-------------+------------+-------+-------+
| 4 | pdays | 1 | 1 | 0 | 0 | 1 | 0 | 3 |
+----+---------------+-------------------+---------------+-------------------------------+-------------+------------+-------+-------+
| 7 | housing | 1 | 0 | 1 | 0 | 1 | 0 | 3 |
+----+---------------+-------------------+---------------+-------------------------------+-------------+------------+-------+-------+
| 12 | age | 0 | 1 | 0 | 1 | 0 | 1 | 3 |
+----+---------------+-------------------+---------------+-------------------------------+-------------+------------+-------+-------+
| 14 | day | 0 | 1 | 0 | 1 | 0 | 1 | 3 |
+----+---------------+-------------------+---------------+-------------------------------+-------------+------------+-------+-------+
| 5 | previous | 1 | 0 | 0 | 0 | 1 | 0 | 2 |
+----+---------------+-------------------+---------------+-------------------------------+-------------+------------+-------+-------+
| 8 | balance | 0 | 1 | 0 | 1 | 0 | 0 | 2 |
+----+---------------+-------------------+---------------+-------------------------------+-------------+------------+-------+-------+
| 13 | campaign | 0 | 0 | 0 | 1 | 0 | 1 | 2 |
+----+---------------+-------------------+---------------+-------------------------------+-------------+------------+-------+-------+
| 9 | loan | 0 | 0 | 1 | 0 | 0 | 0 | 1 |
+----+---------------+-------------------+---------------+-------------------------------+-------------+------------+-------+-------+
| 10 | marital | 0 | 0 | 1 | 0 | 0 | 0 | 1 |
+----+---------------+-------------------+---------------+-------------------------------+-------------+------------+-------+-------+
| 11 | education | 0 | 0 | 1 | 0 | 0 | 0 | 1 |
+----+---------------+-------------------+---------------+-------------------------------+-------------+------------+-------+-------+
| 15 | default | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
+----+---------------+-------------------+---------------+-------------------------------+-------------+------------+-------+-------+
XuniVerse is under active development, if you'd like to be involved, we'd love to have you. Check out the CONTRIBUTING.md file or open an issue on the github project to get started.
https://www.listendata.com/2015/03/weight-of-evidence-woe-and-information.html
https://medium.com/@sundarstyles89/variable-selection-using-python-vote-based-approach-faa42da960f0
Alessio Tamburro (https://github.com/alessiot)
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