.. index:: single: sgd_classifier .. _sgd_classifier/0:

.. rst-class:: right

object

sgd_classifier

Stochastic gradient descent classifier supporting one-vs-rest linear models with configurable losses including log_loss, hinge, squared_hinge, modified_huber, and perceptron.

| Availability: | logtalk_load(sgd_classifier(loader))

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

| Compilation flags: | static, context_switching_calls

| Imports: | public :ref:`probabilistic_classifier_common <probabilistic_classifier_common/0>` | Uses: | :ref:`format <format/0>` | :ref:`linear_algebra <linear_algebra/0>` | :ref:`list <list/0>` | :ref:`numberlist <numberlist/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:`probabilistic_classifier_protocol/0::predict_probabilities/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

(no local declarations; see entity ancestors if any)

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:`logistic_regression_classifier <logistic_regression_classifier/0>`, :ref:`linear_svm_classifier <linear_svm_classifier/0>`, :ref:`knn_classifier <knn_classifier/0>`, :ref:`nearest_centroid_classifier <nearest_centroid_classifier/0>`