Machine Learning in Simulink

Extend machine learning workflows using Simulink

Implement machine learning functionality in Simulink^® models by using blocks from the Statistics and Machine Learning block library, included in Statistics and Machine Learning Toolbox™. This toolbox provides blocks to perform the following workflows:

Import a trained classification or regression model object into Simulink using a classification predict or regression predict block.
Train a machine learning model in the Classification Learner or Regression Learner app, and export the model to Simulink.
Use incremental learning blocks in Simulink to continuously update and monitor drift in machine learning models in real time.
Find nearest neighbors in the data to query points and perform cluster analysis in Simulink using the KNN Search block.
Coexecute trained Python^® machine learning models in Simulink using Python coexecution blocks.

Blocks

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Classification Predict Blocks

ClassificationECOC Predict	Classify observations using error-correcting output codes (ECOC) classification model (Since R2023a)
ClassificationEnsemble Predict	Classify observations using ensemble of decision trees (Since R2021a)
ClassificationKNN Predict	Classify observations using nearest neighbor classification model (Since R2022b)
ClassificationLinear Predict	Classify observations using linear classification model (Since R2023a)
ClassificationNaiveBayes Predict	Classify observations using naive Bayes model (Since R2023b)
ClassificationNeuralNetwork Predict	Classify observations using neural network classification model (Since R2021b)
ClassificationSVM Predict	Classify observations using support vector machine (SVM) classifier for one-class and binary classification (Since R2020b)
ClassificationTree Predict	Classify observations using decision tree classifier (Since R2021a)
ClassificationDiscriminant Predict	Classify observations using discriminant analysis model (Since R2024a)
ClassificationKernel Predict	Classify observations using Gaussian kernel classifier for binary classification (Since R2024b)

Regression Predict Blocks

RegressionEnsemble Predict	Predict responses using ensemble of decision trees for regression (Since R2021a)
RegressionGP Predict	Predict responses using Gaussian process (GP) regression model (Since R2022a)
RegressionLinear Predict	Predict responses using linear regression model (Since R2023a)
RegressionNeuralNetwork Predict	Predict responses using neural network regression model (Since R2021b)
RegressionSVM Predict	Predict responses using support vector machine (SVM) regression model (Since R2020b)
RegressionTree Predict	Predict responses using regression tree model (Since R2021a)
RegressionKernel Predict	Predict responses using Gaussian kernel regression model (Since R2024b)

Incremental Learning Blocks

IncrementalClassificationLinear Predict	Classify observations using incremental linear classification model (Since R2023b)
IncrementalClassificationLinear Fit	Fit incremental linear binary classification model (Since R2023b)
IncrementalRegressionLinear Predict	Predict responses using incremental linear regression model (Since R2023b)
IncrementalRegressionLinear Fit	Fit incremental linear regression model (Since R2023b)
IncrementalClassificationECOC Fit	Fit incremental ECOC classification model (Since R2024a)
IncrementalClassificationECOC Predict	Classify observations using incremental ECOC classification model (Since R2024a)
IncrementalClassificationKernel Fit	Fit incremental kernel classification model (Since R2024b)
IncrementalClassificationKernel Predict	Classify observations using incremental kernel classification model (Since R2024b)
IncrementalRegressionKernel Fit	Fit incremental kernel regression model (Since R2024b)
IncrementalRegressionKernel Predict	Predict responses using incremental kernel regression model (Since R2024b)
IncrementalClassificationNaiveBayes Fit	Fit incremental naive Bayes classification model (Since R2025a)
IncrementalClassificationNaiveBayes Predict	Classify observations using incremental naive Bayes classification model (Since R2025a)
Detect Drift	Update drift detector states and drift status with new data (Since R2024b)
Per Observation Loss	Per observation regression or classification error of incremental model (Since R2025a)
Update Metrics	Update performance metrics in incremental learning model given new data (Since R2023b)

Cluster Analysis and Anomaly Detection Blocks

KNN Search

Find k-nearest neighbors using searcher object (Since R2023b)

Python Coexecution Blocks

Scikit-learn Model Predict	Predict responses using pretrained Python scikit-learn model (Since R2024a)
Custom Python Model Predict	Predict responses using pretrained custom Python model (Since R2024a)

Topics

Classification

Predict Class Labels Using ClassificationSVM Predict Block
This example shows how to use the ClassificationSVM Predict block for label prediction in Simulink®.
Predict Class Labels Using ClassificationTree Predict Block
Train a classification decision tree model using the Classification Learner app, and then use the ClassificationTree Predict block for label prediction.
Predict Class Labels Using ClassificationLinear Predict Block
This example shows how to use the ClassificationLinear Predict block for label prediction in Simulink®. (Since R2023a)
Predict Class Labels Using ClassificationECOC Predict Block
Train an ECOC classification model, and then use the ClassificationECOC Predict block for label prediction. (Since R2023a)
Predict Class Labels Using ClassificationEnsemble Predict Block
Train a classification ensemble model with optimal hyperparameters, and then use the ClassificationEnsemble Predict block for label prediction.
Predict Class Labels Using ClassificationNaiveBayes Predict Block
Train a naive Bayes classification model, and then use the ClassificationNaiveBayes Predict block for label prediction. (Since R2024a)
Predict Class Labels Using ClassificationNeuralNetwork Predict Block
Train a neural network classification model, and then use the ClassificationNeuralNetwork Predict block for label prediction.
Predict Class Labels Using ClassificationKNN Predict Block
Train a nearest neighbor classification model, and then use the ClassificationKNN Predict block for label prediction.
Predict Class Labels Using ClassificationDiscriminant Predict Block
Train a discriminant analysis classification model, and then use the ClassificationDiscriminant Predict block for label prediction. (Since R2023b)
Predict Class Labels Using ClassificationKernel Predict Block
Train a Gaussian kernel classification model, and then use the ClassificationKernel Predict block for label prediction. (Since R2024b)

Regression

Predict Responses Using RegressionSVM Predict Block
Train a support vector machine (SVM) regression model using the Regression Learner app, and then use the RegressionSVM Predict block for response prediction.
Predict Responses Using RegressionTree Predict Block
This example shows how to use the RegressionTree Predict block for response prediction in Simulink®.
Predict Responses Using RegressionLinear Predict Block
This example shows how to use the RegressionLinear Predict block for response prediction in Simulink®. (Since R2023a)
Predict Responses Using RegressionEnsemble Predict Block
Train a regression ensemble model with optimal hyperparameters, and then use the RegressionEnsemble Predict block for response prediction.
Predict Responses Using RegressionNeuralNetwork Predict Block
Train a neural network regression model, and then use the RegressionNeuralNetwork Predict block for response prediction.
Predict Responses Using RegressionGP Predict Block
Train a Gaussian process (GP) regression model, and then use the RegressionGP Predict block for response prediction.
Predict Responses Using RegressionKernel Predict Block
This example shows how to use the RegressionKernel Predict block for response prediction in Simulink®. (Since R2024b)

Incremental Learning

Perform Incremental Learning Using IncrementalClassificationLinear Fit and Predict Blocks
Perform incremental learning with the IncrementalClassificationLinear Fit block and predict labels with the IncrementalClassificationLinear Predict block. (Since R2023b)
Perform Incremental Learning Using IncrementalRegressionLinear Fit and Predict Blocks
Perform incremental learning with the IncrementalRegressionLinear Fit block and predict responses with the IncrementalRegressionLinear Predict block. (Since R2023b)
Perform Incremental Learning Using IncrementalClassificationECOC Fit and Predict Blocks
Perform incremental learning with the IncrementalClassificationECOC Fit block and predict labels with the IncrementalClassificationECOC Predict block. (Since R2024a)
Perform Incremental Learning Using IncrementalClassificationKernel Fit and Predict Blocks
Perform incremental learning with the IncrementalClassificationKernel Fit block and predict labels with the IncrementalClassificationKernel Predict block. (Since R2024b)
Perform Incremental Learning Using IncrementalRegressionKernel Fit and Predict Blocks
Perform incremental learning with the IncrementalRegressionKernel Fit block and predict responses with the IncrementalRegressionKernel Predict block. (Since R2024b)
Perform Incremental Learning and Track Performance Metrics Using Update Metrics Block
Perform incremental learning and track performance metrics with the Update Metrics block. (Since R2023b)
Monitor Drift Using Detect Drift Block
This example shows how to use the Detect Drift block for monitoring drift in a data stream in Simulink®. (Since R2024b)
In-Place Model Update of Offline Linear Model Using IncrementalClassificationLinear Predict Block
Perform in-place model update without regenerating deployed code. (Since R2025a)

Incremental Learning Templates

Configure Simulink Template for Conditionally Enabled Incremental Linear Classification
Configure the Simulink Enabled Execution Incremental Learning template to perform incremental linear classification. (Since R2024a)
Configure Simulink Template for Conditionally Enabled Incremental Linear Regression
Configure the Simulink Enabled Execution Incremental Learning template to perform incremental linear regression. (Since R2024a)
Configure Simulink Template for Rate-Based Incremental Linear Classification
Configure the Simulink Rate-Based Incremental Learning template to perform incremental linear classification. (Since R2024a)
Configure Simulink Template for Rate-Based Incremental Linear Regression
Configure the Simulink Rate-Based Incremental Learning template to perform incremental linear regression. (Since R2024a)
Configure Simulink Template for Drift-Aware Incremental Learning
Configure the Drift-Aware Training for Incremental Learning template to perform drift-aware learning. (Since R2025a)

Cluster Analysis and Anomaly Detection

Find Nearest Neighbors Using KNN Search Block
Train a nearest neighbor searcher model, and then use the KNN Search block for label prediction. (Since R2023b)

Python Coexecution

Predict Cluster Assignments Using Python Scikit-learn Model Predict Block
This example shows how to use the Scikit-learn Model Predict block for prediction in Simulink®.
Predict Responses Using Custom Python Model in Simulink
This example shows how to use the Custom Python Model Predict block for prediction in Simulink®.

Export Learner App Models to Simulink

Export Classification Model to Make Predictions in Simulink
Train a model in Classification Learner, and then export the model to Simulink.
Export Regression Model to Make Predictions in Simulink
Train a model in Regression Learner, and then export the model to Simulink.

Code Generation

System Objects for Classification and Code Generation
Generate code from a System object™ for making predictions using a trained classification model, and use the System object in a Simulink model.
Predict Class Labels Using MATLAB Function Block
Generate code from a Simulink model that classifies data using an SVM model.
Predict Class Labels Using Stateflow
Generate code from a Stateflow^® model that classifies data using a discriminant analysis classifier.

Related Information

Deep Learning with Simulink (Deep Learning Toolbox)

Featured Examples

Human Activity Recognition Simulink Model for Fixed-Point Deployment

Generate code from a classification Simulink model prepared for fixed-point deployment.

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Human Activity Recognition Simulink Model for Smartphone Deployment

Generate code from a classification Simulink model prepared for deployment to a smartphone.

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Identify Punch and Flex Hand Gestures Using Machine Learning Algorithm on Arduino Hardware

Use the Simulink® Support Package for Arduino® Hardware to identify punch and flex hand gestures using a machine learning algorithm. The example is deployed on an Arduino Nano 33 IoT hardware board that uses an onboard LSM6DS3 6DOF IMU sensor to identify the hand gestures. The output from the machine learning algorithm, after identifying whether a hand gesture is a punch or a flex, is transmitted to the serial port where 0 represents a punch and 1 represents a flex.

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Compress Machine Learning Model for Memory-Limited Hardware

Reduce model size by feature selection, constrained Bayesian optimization, and parameter quantization.

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