Resolving RuntimeError in Random Search with Keras Tuner for Hyperparameter Optimization

Learn how to effectively troubleshoot and resolve the `RuntimeError` encountered while using Keras Tuner's Random Search for optimizing a CNN model.
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Troubleshooting RuntimeError in Keras Tuner's Random Search

When working on hyperparameter tuning using Keras Tuner, developers often face various challenges. One common issue that programmers encounter is a RuntimeError during the model building phase. This guide focuses on resolving such an error, specifically while using the Random Search tuning method for a Convolutional Neural Network (CNN) model.

Understanding the Problem

The error arises when trying to optimize a CNN model for tasks such as digit recognition using the Keras Tuner Library. The error trace reveals that a missing positional argument (kernel_size) is causing the model building process to fail. Incorrect variable names or typographical errors in the code might also lead to similar runtime errors.

Example of Error:

[[See Video to Reveal this Text or Code Snippet]]

This error indicates that the model construction is not recognizing the kernel_size parameter due to a spelling mistake.

Solution: Fixing the Code

To address this issue, we'll begin by correcting the spelling errors present in the code and ensure proper usage of parameters. Below are the key modifications and the complete fixed code.

Key Corrections to Make:

Spelling: Replace kernal_size with kernel_size.

Parameter Initialization: Ensure that the Conv2D layers are correctly defined with the required parameters.

Updated Code

Here is the revised version of the code with corrections:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

By addressing the typographical errors and ensuring the correct parameters are passed in the model configuration, the RuntimeError during the Random Search tuning with Keras Tuner should be resolved. Remember that these small details can significantly impact your model’s performance and functioning.

Happy coding! If you have any further questions or face additional issues, don't hesitate to reach out!