Cross Validation
Strategy
Period (time) x Entity (group) 2-axis CV. Evaluates generalization to future periods AND unseen entities.
Blocks (Period Axis)
Period Column
Value Distribution
7 unique values
2024-09
1,842
2024-10
2,031
2024-11
2,256
2024-12
2,823
2025-01
2,487
2025-02
1,553
2025-03
1,128
Cutoffs
Click values to set period boundaries
2024-09
2024-10
2024-11
2024-12
2025-01
2025-02
2025-03
Resulting Periods
P0: 2024-09 ~ 2024-10 (3,873 rows)
P1: 2024-11 ~ 2024-12 (5,079 rows)
P2: 2025-01 ~ 2025-03 (5,168 rows)
Mode
Training data grows cumulatively with each fold
Groups (Entity Axis)
Group Column
Folds (n_splits)
3
Stratify
Shuffle
Fold Preview
Total: 6 folds
(2 time × 3 groups)
Time Fold 0 × Group Folds
P0 (train)
P1 (valid)
P2
Time Fold 1 × Group Folds
P0+P1 (train)
P2 (valid)
Fold
Structure
Train
Valid
0
P0 → P1 · G0
2,582
1,693
1
P0 → P1 · G1
2,582
1,693
2
P0 → P1 · G2
2,582
1,693
3
P0+P1 → P2 · G0
5,968
1,723
4
P0+P1 → P2 · G1
5,968
1,723
5
P0+P1 → P2 · G2
5,968
1,723
Min Train Rows
10
Min Valid Rows
5