# What is keras tuner? [closed]

I have implemented a deep learning model using Keras library. A lot of data scientists said use Keras tuner to increase model performance. I am bit confuse

1. what is Keras tuner and when should I use that?

2. What is hyperparameter in Keras?

Hyper-parameter refers to all the parameters that can be changed in a model. For example, the activation function is a hyper-parameter and you can put values such as relu or tanh. Another example is the optimizer. Even the number of neurons is a hyperparameter.