.. index:: single: spectral_clusterer .. _spectral_clusterer/0:

.. rst-class:: right

object

spectral_clusterer

Normalized spectral clusterer for continuous datasets using a Gaussian RBF affinity and a Nystroem extension for assigning new instances to clusters.

| Availability: | logtalk_load(spectral_clusterer(loader))

| Author: Paulo Moura | Version: 1:0:0 | Date: 2026-08-01

| Compilation flags: | static, context_switching_calls

| Imports: | public :ref:`clusterer_common <clusterer_common/0>` | Uses: | :ref:`format <format/0>` | :ref:`linear_algebra <linear_algebra/0>` | :ref:`list <list/0>` | :ref:`numberlist <numberlist/0>` | :ref:`pairs <pairs/0>` | :ref:`type <type/0>`

| Remarks: | (none)

| Inherited public predicates: | Â :ref:`clusterer_protocol/0::check_clusterer/1` Â :ref:`options_protocol/0::check_option/1` Â :ref:`options_protocol/0::check_options/1` Â :ref:`clusterer_protocol/0::cluster/3` Â :ref:`clusterer_protocol/0::clusterer_options/2` Â :ref:`options_protocol/0::default_option/1` Â :ref:`options_protocol/0::default_options/1` Â :ref:`clusterer_protocol/0::diagnostic/2` Â :ref:`clusterer_protocol/0::diagnostics/2` Â :ref:`clusterer_protocol/0::export_to_clauses/4` Â :ref:`clusterer_protocol/0::export_to_file/4` Â :ref:`clusterer_protocol/0::learn/2` Â :ref:`clusterer_protocol/0::learn/3` Â :ref:`options_protocol/0::option/2` Â :ref:`options_protocol/0::option/3` Â :ref:`clusterer_protocol/0::print_clusterer/1` Â :ref:`clusterer_protocol/0::valid_clusterer/1` Â :ref:`options_protocol/0::valid_option/1` Â :ref:`options_protocol/0::valid_options/1` Â

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

Public predicates

(no local declarations; see entity ancestors if any)

Protected predicates

.. index:: clusterer_diagnostics_data/2 .. _spectral_clusterer/0::clusterer_diagnostics_data/2:

clusterer_diagnostics_data/2 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Extracts the diagnostics metadata from a learned spectral clusterer.

| Compilation flags: | static

| Template: | clusterer_diagnostics_data(Clusterer,Diagnostics) | Mode and number of proofs: | clusterer_diagnostics_data(+compound,-list(compound)) - one

---

Private predicates

(no local declarations; see entity ancestors if any)

Operators

(none)

.. seealso::

:ref:`clusterer_protocol <clusterer_protocol/0>`, :ref:`clustering_dataset_protocol <clustering_dataset_protocol/0>`, :ref:`kmeans_clusterer <kmeans_clusterer/0>`, :ref:`linear_algebra <linear_algebra/0>`