.. index:: single: qda_classifier
.. _qda_classifier/0:

.. rst-class:: right

**object**

``qda_classifier``
==================

Quadratic Discriminant Analysis classifier for continuous datasets using class-specific regularized covariance models.

| **Availability:** 
|    ``logtalk_load(qda_classifier(loader))``

| **Author:** Paulo Moura
| **Version:** 1:0:0
| **Date:** 2026-05-11

| **Compilation flags:**
|    ``static, context_switching_calls``


| **Imports:**
|    ``public`` :ref:`classifier_common <classifier_common/0>`
| **Uses:**
|    :ref:`format <format/0>`
|    :ref:`linear_algebra <linear_algebra/0>`
|    :ref:`list <list/0>`
|    :ref:`type <type/0>`

| **Remarks:**
|    (none)

| **Inherited public predicates:**
|     :ref:`classifier_protocol/0::check_classifier/1`  :ref:`options_protocol/0::check_option/1`  :ref:`options_protocol/0::check_options/1`  :ref:`classifier_protocol/0::classifier_options/2`  :ref:`options_protocol/0::default_option/1`  :ref:`options_protocol/0::default_options/1`  :ref:`classifier_protocol/0::diagnostic/2`  :ref:`classifier_protocol/0::diagnostics/2`  :ref:`classifier_protocol/0::export_to_clauses/4`  :ref:`classifier_protocol/0::export_to_file/4`  :ref:`classifier_protocol/0::learn/2`  :ref:`classifier_protocol/0::learn/3`  :ref:`options_protocol/0::option/2`  :ref:`options_protocol/0::option/3`  :ref:`classifier_protocol/0::predict/3`  :ref:`classifier_protocol/0::print_classifier/1`  :ref:`classifier_protocol/0::valid_classifier/1`  :ref:`options_protocol/0::valid_option/1`  :ref:`options_protocol/0::valid_options/1`  

.. contents::
   :local:
   :backlinks: top

Public predicates
-----------------

.. index:: predict_scores/3
.. _qda_classifier/0::predict_scores/3:

``predict_scores/3``
^^^^^^^^^^^^^^^^^^^^

Predicts class discriminant scores for a new instance.

| **Compilation flags:**
|    ``static``

| **Template:**
|    ``predict_scores(Classifier,Instance,Scores)``
| **Mode and number of proofs:**
|    ``predict_scores(+compound,+list,-list)`` - ``one``


------------

Protected predicates
--------------------

(no local declarations; see entity ancestors if any)

Private predicates
------------------

(no local declarations; see entity ancestors if any)

Operators
---------

(none)

.. seealso::

   :ref:`dataset_protocol <dataset_protocol/0>`, :ref:`lda_classifier <lda_classifier/0>`, :ref:`nearest_centroid_classifier <nearest_centroid_classifier/0>`