.. index:: single: classifier_protocol
.. _classifier_protocol/0:

.. rst-class:: right

**protocol**

``classifier_protocol``
=======================

Protocol for machine learning classifiers.

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

| **Author:** Paulo Moura
| **Version:** 1:0:0
| **Date:** 2026-02-19

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


| **Dependencies:**
|   (none)


| **Remarks:**
|    (none)

| **Inherited public predicates:**
|    (none)

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

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

.. index:: learn/2
.. _classifier_protocol/0::learn/2:

``learn/2``
^^^^^^^^^^^

Learns a classifier from the given dataset object.

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

| **Template:**
|    ``learn(Dataset,Classifier)``
| **Mode and number of proofs:**
|    ``learn(+object_identifier,-compound)`` - ``one``


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

.. index:: predict/3
.. _classifier_protocol/0::predict/3:

``predict/3``
^^^^^^^^^^^^^

Predicts the class label for a new instance using the learned classifier. The instance is a list of ``Attribute-Value`` pairs.

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

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


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

.. index:: classifier_to_clauses/4
.. _classifier_protocol/0::classifier_to_clauses/4:

``classifier_to_clauses/4``
^^^^^^^^^^^^^^^^^^^^^^^^^^^

Converts a classifier into a list of predicate clauses. ``Functor`` is the functor for the generated predicate clauses.

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

| **Template:**
|    ``classifier_to_clauses(Dataset,Classifier,Functor,Clauses)``
| **Mode and number of proofs:**
|    ``classifier_to_clauses(+object_identifier,+compound,+callable,-list(clause))`` - ``one``


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

.. index:: classifier_to_file/4
.. _classifier_protocol/0::classifier_to_file/4:

``classifier_to_file/4``
^^^^^^^^^^^^^^^^^^^^^^^^

Exports a classifier to a file. ``Functor`` is the functor for the generated predicate clauses.

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

| **Template:**
|    ``classifier_to_file(Dataset,Classifier,Functor,File)``
| **Mode and number of proofs:**
|    ``classifier_to_file(+object_identifier,+compound,+callable,+atom)`` - ``one``


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

.. index:: print_classifier/1
.. _classifier_protocol/0::print_classifier/1:

``print_classifier/1``
^^^^^^^^^^^^^^^^^^^^^^

Prints a classifier to the current output stream in a human-readable format.

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

| **Template:**
|    ``print_classifier(Classifier)``
| **Mode and number of proofs:**
|    ``print_classifier(+compound)`` - ``one``


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

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

(none)

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

(none)

Operators
---------

(none)

.. seealso::

   :ref:`c45 <c45/0>`, :ref:`isolation_forest <isolation_forest/0>`, :ref:`knn <knn/0>`, :ref:`naive_bayes <naive_bayes/0>`, :ref:`nearest_centroid <nearest_centroid/0>`, :ref:`random_forest <random_forest/0>`