Vowpal Wabbit Python Wrapper

Vowpal Wabbit is a fast machine learning library for online learning, and this is the python wrapper for the project.

Usage

You can use the python wrapper directly like this:

from vowpalwabbit import pyvw
vw = pyvw.vw(quiet=True)
ex = vw.example('1 | a b c')
vw.learn(ex)
vw.predict(ex)

Or you can use the included scikit-learn interface like this:

import numpy as np
from sklearn import datasets
from sklearn.model_selection import train_test_split
from vowpalwabbit.sklearn_vw import VWClassifier
    # generate some data
X, y = datasets.make_hastie_10_2(n_samples=10000, random_state=1)
X = X.astype(np.float32)
    # split train and test set
X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.2, random_state=256)
    # build model
model = VWClassifier()
model.fit(X_train, y_train)
    # predict model
y_pred = model.predict(X_test)
    # evaluate model
model.score(X_train, y_train)
model.score(X_test, y_test)