# Your first deep learning model¶

Here is how you can quickly build a Deep Learning model and train it on CPU.

## Create a code environment with the required packages¶

First, you need the appropriate packages to be able to run the model. To do so, you need to:

• Create a new code environment
• Go to the “Packages to install” tab of this code-env and click on “Add sets of packages”
• Select “Visual Deep Learning: Keras, Tensorflow (CPU)” and click “Add”

You are now ready to build your first Deep Learning model (See Runtime and GPU support for more information on how code environments are used for Deep Learning).

## Create a Deep Learning analysis to solve a Prediction problem¶

Select a dataset for which you have a target column that you want to predict depending on the values of the other columns of the dataset. Then:

• Select the Lab
• Select Quick model then Prediction
• Choose your target variable (one of the columns) and Expert Mode
• Choose Deep Learning and click Create

## Review the architecture of you Deep Learning model¶

DSS then creates a Multi Layer Perceptron architecture that you can modify to any Deep Learning architecture. It is written in the build_model function of the “Architecture” tab and should look like:

def build_model(input_shapes, n_classes=None):

# This input will receive all the preprocessed features
# sent to 'main'
input_main = Input(shape=input_shapes["main"], name="main")

x = Dense(64, activation='relu')(input_main)
x = Dense(64, activation='relu')(x)

predictions = Dense(1)(x)

# The 'inputs' parameter of your model must contain the
# full list of inputs used in the architecture
model = Model(inputs=[input_main], outputs=predictions)

return model


The precise architecture may vary if you have a dataset with particular data types, such as text, because DSS adapts the default architecture depending on data types.

The model is written using the Keras API, and defines an Input, that will receive the preprocessed features from your dataset, then three fully connected Dense layers.

Click on Train.

## Monitor the performance of your model during the training¶

You will then see charts that track the performance of the model and the progress in the training.

Once the training is completed, you can assess its performnance, then deploy it, score it, retrain it like any other Visual Machine Learning model in DSS.

For a more detailed walkthrough, see an Introduction to Deep Learning with Code.