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This sample demonstrates how a model is generated out of a data set using the decision tree algorithm. The sample uses a data set to generate a model, which is divided into two sets for training and testing.
Prerequisites
Follow the steps below to set up the prerequisites before you start.
- Download WSO2 Machine Learner, and start the server.
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Building the sample
Execute the following command to download the source code of the product: git clone https://github.com/wso2/product-ml.git
Executing the sample
Once the sample is successfully executed, you can obtain the following output.
Follow the steps below if you already executed a sample before.
- Execute the following command to remove the databases created:
rm -rf repository/database/WSO2ML_DB.* - Navigate to
<ML_HOME>/bin/directory. Restart the WSO2 ML server by executing the following command: ./ - Download and install jq (CLI JSON processor). For instructions, see jq Documentation.
- If you are using Mac OS X, download and install GNU stream editor (sed). For instructions, see GNU sed Documentation.
wso2server.sh -Dsetup For information on setting up and running WSO2 ML, see Getting Started.Executing the sample
Follow the steps below to execute the sample.
Navigate to
<ML_HOME>/samples/rest-apidefault/decision-tree/directory using the CLI.Info <ML_HOME>refers to the downloadedproduct-mldirectory with the source code of the product- Execute the following command to execute the sample: sh ./
model-generation.sh
Output of the sample
Once Once the sample is successfully executed, you can obtain the following output.view the summary and the prediction of the model as described below.
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By default, the sample generates the model in the |
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Viewing the model summary
You can
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view the
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summary of the
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built model using the ML UI as follows.
Log in to the ML UI from your Web browser using
admin/admincredentials and the following URL: https://<ML_HOST>:<ML_PORT>/mlClick the Projects button as shown below.
- Click MODELS button of the new analysis which you created by executing the sample as shown below.
- Click VIEW of the built new model as shown below.
Code Block language text 
You view the summary of the built model as shown below.
Viewing the model prediction
The sample executes the generated model on
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the <ML_HOME>/samples/
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default/decision-tree/prediction-test
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data set, and it
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prints the value [
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"1"] as the prediction result In the CLI logs.