15.15 Loss functions and optimizers

• Once network architecture (model) is defined → choose loss function & optimizer
• Loss function (also called objective function)
• Quantity that will be minimized during training (measure of success)
• Optimizer
• Determines how the network will be updated based on the loss function
# Example code: compile the model
model %>% compile(
optimizer = "rmsprop", # Optimizer algorithm
loss = "mse", # Mean squared error loss function
metrics = c("mae") # mean absolute error (MAE)
)