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Calcimator

Cross-Validation Calculator

Calculate k-fold cross-validation splits, train-test splits, and data utilization for machine learning.

Inputs

Results

Fold Size

2,000

Training Size per Fold

8,000

Test Set Size

200,000

Validation Set Size-1,900,000
Final Training Size1,710,000
Data Utilization400%
How to Use This Calculator
  1. Enter the dataset size (total samples) and number of folds (k, typically 5 or 10).
  2. Input the model training time per fold in seconds.
  3. Set the performance metric (accuracy, F1, RMSE) and enter the per-fold metric values.
  4. Review the mean and standard deviation of the cross-validation score.
  5. A high standard deviation across folds indicates model instability β€” try regularization or more data.
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Formula

Fold Size = Dataset Size / K

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