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Hyperparameter Tuning with GridSearchCV

Hyperparameter Tuning with GridSearchCV

One of the most important parameters in KNN is the number of nearest neighbors (K).

Choosing a value that is too small may cause overfitting, while choosing a value that is too large may reduce prediction accuracy.

Instead of selecting K manually, GridSearchCV is used to automatically test multiple values and identify the best-performing one.

Advantages of GridSearchCV

  • Automates parameter tuning
  • Uses cross-validation for reliable evaluation
  • Improves model performance
  • Reduces manual trial and error

This helps build a more accurate and reliable stock prediction model.