.. index:: single: ewma_anomaly_detector .. _ewma_anomaly_detector/0:

.. rst-class:: right

object

ewma_anomaly_detector

EWMA (Exponentially Weighted Moving Average) anomaly detector for continuous sequence-like datasets. Learns per-step population mean and standard deviation from baseline training examples selected from a dataset object implementing the anomaly_dataset_protocol protocol and returns a detector term that can be used for scoring, prediction, and export.

| Availability: | logtalk_load(ewma_anomaly_detector(loader))

| Author: Paulo Moura | Version: 1:0:0 | Date: 2026-05-06

| Compilation flags: | static, context_switching_calls

| Imports: | public :ref:`anomaly_detector_common <anomaly_detector_common/0>` | Uses: | :ref:`format <format/0>` | :ref:`list <list/0>` | :ref:`pairs <pairs/0>` | :ref:`population <population/0>` | :ref:`type <type/0>`

| Remarks: | (none)

| Inherited public predicates: |  :ref:`anomaly_detector_protocol/0::anomaly_detector_options/2`  :ref:`anomaly_detector_protocol/0::check_anomaly_detector/1`  :ref:`options_protocol/0::check_option/1`  :ref:`options_protocol/0::check_options/1`  :ref:`options_protocol/0::default_option/1`  :ref:`options_protocol/0::default_options/1`  :ref:`anomaly_detector_protocol/0::diagnostic/2`  :ref:`anomaly_detector_protocol/0::diagnostics/2`  :ref:`anomaly_detector_protocol/0::export_to_clauses/4`  :ref:`anomaly_detector_protocol/0::export_to_file/4`  :ref:`anomaly_detector_protocol/0::learn/2`  :ref:`anomaly_detector_protocol/0::learn/3`  :ref:`options_protocol/0::option/2`  :ref:`options_protocol/0::option/3`  :ref:`anomaly_detector_protocol/0::predict/3`  :ref:`anomaly_detector_protocol/0::predict/4`  :ref:`anomaly_detector_protocol/0::print_anomaly_detector/1`  :ref:`anomaly_detector_protocol/0::score/3`  :ref:`anomaly_detector_protocol/0::score_all/3`  :ref:`anomaly_detector_protocol/0::valid_anomaly_detector/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:`anomaly_dataset_protocol <anomaly_dataset_protocol/0>`, :ref:`anomaly_detector_protocol <anomaly_detector_protocol/0>`, :ref:`cusum_anomaly_detector <cusum_anomaly_detector/0>`, :ref:`isolation_forest_anomaly_detector <isolation_forest_anomaly_detector/0>`, :ref:`knn_distance_anomaly_detector <knn_distance_anomaly_detector/0>`, :ref:`lof_anomaly_detector <lof_anomaly_detector/0>`, :ref:`modified_z_score_anomaly_detector <modified_z_score_anomaly_detector/0>`, :ref:`z_score_anomaly_detector <z_score_anomaly_detector/0>`