.. note::
    :class: sphx-glr-download-link-note

    Click :ref:`here <sphx_glr_download_auto_examples_plot_glvq.py>` to download the full example code
.. rst-class:: sphx-glr-example-title

.. _sphx_glr_auto_examples_plot_glvq.py:


========================================
Generalized Learning Vector Quantization
========================================
This example shows how GLVQ classifies.
The plot shows the target class of each data point
(big circle) and which class was predicted (smaller circle). It also
shows the prototypes (black diamond) and their labels (small point inside the diamond).





.. image:: /auto_examples/images/sphx_glr_plot_glvq_001.png
    :class: sphx-glr-single-img


.. rst-class:: sphx-glr-script-out

 Out:

 .. code-block:: none

    GLVQ:
    not implemented!
    ('classification accuracy:', 1.0)




|


.. code-block:: python

    import numpy as np
    import matplotlib.pyplot as plt

    from sklearn_lvq import GlvqModel
    from sklearn_lvq.utils import plot2d

    print(__doc__)

    nb_ppc = 100
    print('GLVQ:')
    toy_data = np.append(
        np.random.multivariate_normal([0, 0], np.eye(2) / 2, size=nb_ppc),
        np.random.multivariate_normal([5, 0], np.eye(2) / 2, size=nb_ppc), axis=0)
    toy_label = np.append(np.zeros(nb_ppc), np.ones(nb_ppc), axis=0)

    glvq = GlvqModel()
    glvq.fit(toy_data, toy_label)
    plot2d(glvq, toy_data, toy_label, 1, 'glvq')

    print('classification accuracy:', glvq.score(toy_data, toy_label))
    plt.show()

**Total running time of the script:** ( 0 minutes  0.093 seconds)


.. _sphx_glr_download_auto_examples_plot_glvq.py:


.. only :: html

 .. container:: sphx-glr-footer
    :class: sphx-glr-footer-example



  .. container:: sphx-glr-download

     :download:`Download Python source code: plot_glvq.py <plot_glvq.py>`



  .. container:: sphx-glr-download

     :download:`Download Jupyter notebook: plot_glvq.ipynb <plot_glvq.ipynb>`


.. only:: html

 .. rst-class:: sphx-glr-signature

    `Gallery generated by Sphinx-Gallery <https://sphinx-gallery.readthedocs.io>`_