ULR Fold 4

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Fold metrics

MetricValue
Test accuracy59.16%
Test F1 score0.6240
Hierarchical loss0.92283269
P-adic loss (total)231.47657724
P-adic loss (mean)0.25691074
Prime base79
Number of tags (input features)6,936
Non-zero parameters2,706 / 2,421,013 (99.9% sparse)
L1 regularization (C)1.0000
Training samples3,679
Test samples901

P-adic loss breakdown

AgreementCountShareCost per mistakeTotal contribution
Exact match53759.60%0.0000000.000000
p^570.78%0.0000000.000000
p^4131.44%0.0000000.000000
p^3252.77%0.0000020.000051
p^2515.66%0.0001600.008172
p^1374.11%0.0126580.468354
p^023125.64%1.000000231.000000

About L1 regularization

L1 (Lasso) regularization promotes sparsity by driving many coefficients to exactly zero. This model uses ALL available tags (6,936) but L1 regularization selects which features are actually used. The number of non-zero parameters (2,706) indicates how many coefficients the model actually uses.