MojiDiff

← experiments

openmoji-g1-withheld-calibration-v14-dbfc543-359d06bd-9b9b1699

completed passed

Hypothesis

v13 beat identity without any held-out calibration, 0.6519 against 0.6515, but by only 0.0003, because it estimated the value head's accuracy on icons the model had trained on. There it scores 0.2751 against 0.1233 held out, so the derived threshold came out at 0.784 where the held-out accuracy implies 0.890 - too permissive, so the model edits more than pays. Estimating that accuracy on 256 train icons withheld from training should give a threshold near 0.89 and a margin closer to the 0.0065 a fitted threshold achieved, while still never touching held-out data.

Why run it

It closes the last gap between the project's first win over the trivial policy and a win that needs no asterisk at all: no sweep, no held-out calibration, and a threshold the model derives from data it never trained on.

Scope limits

Fixed-topology and geometry-only, single seed, marginal-respecting corruption at 0.35, token accuracy rather than renders. Withholding 256 icons also removes them from training, so the model sees 2,425 rather than 2,681 - a 9.6% reduction that works against this run and is disclosed rather than hidden.

Measured behaviour

Held-out loss
lossoptimizer step11.21.41.61.8010002000selected
Table view
optimizer stepheld-out loss
01.7456
601.3075
1201.2794
1801.2665
2401.2555
3001.2464
3601.2209
4201.1997
4801.1843
5401.1718
6001.1595
6601.1461
7201.1376
7801.1233
8401.1101
9001.1022
9601.0932
10201.0862
10801.0772
11401.0720
12001.0660
12601.0607
13201.0617
13801.0585
14401.0535
15001.0497
15601.0458
16201.0483
16801.0430
17401.0468
18001.0412
18601.0391
19201.0386
19801.0386
20401.0403
21001.0407
21601.0364
22201.0360
22801.0392
23401.0411
24001.0364
24601.0385
25201.0424
25801.0408
26401.0397
27001.0440
Held-out token accuracy
aggregatechanged fieldsretained fields
accuracyoptimizer step00.250.50.751010002000selected
Table view
optimizer stepaggregatechanged fieldsretained fields
00.33390.00110.5118
600.62540.00120.9592
1200.64370.00160.9871
1800.64840.00190.9942
2400.64650.00310.9906
3000.64610.00340.9898
3600.63580.00420.9736
4200.60650.01100.9249
4800.57250.02160.8671
5400.58690.02130.8894
6000.58280.02680.8802
6600.58680.03260.8833
7200.59120.03460.8889
7800.60570.03620.9102
8400.60340.04530.9018
9000.60570.05060.9026
9600.61200.04970.9127
10200.60710.05260.9037
10800.61720.05430.9182
11400.61010.05700.9059
12000.61690.05840.9156
12600.61430.05880.9113
13200.60360.06090.8938
13800.60190.06430.8894
14400.60470.06540.8932
15000.60710.06620.8964
15600.60280.06810.8887
16200.60440.07090.8897
16800.60980.06610.9005
17400.59530.07170.8753
18000.61270.06760.9042
18600.60860.06870.8973
19200.60030.07220.8827
19800.60550.07190.8908
20400.60510.07000.8913
21000.60490.07450.8885
21600.60470.07110.8901
22200.60490.07300.8894
22800.59940.07420.8803
23400.60380.07190.8882
24000.59730.07600.8761
24600.59830.07600.8777
25200.59750.07530.8767
25800.60410.07600.8865
26400.59970.07500.8803
27000.59500.07820.8714
Training token accuracy (per batch)
accuracyoptimizer step00.20.40.60.810002000selected
Table view
optimizer steptrain accuracy
10.3187
20.3981
30.5018
40.5079
50.5130
60.5537
70.5227
80.5390
90.5479
100.5150
110.5021
120.4831
130.4697
140.4669
150.4741
160.5191
170.5295
180.5582
190.5428
200.5639
210.5416
220.5687
230.5795
240.5912
250.5681
260.5897
270.5475
280.5880
290.5685
300.5656
310.5759
320.5666
330.5572
340.5758
350.5803
360.5953
370.5757
380.5890
390.5978
400.6176
410.6096
420.6223
430.5844
440.6259
450.6315
460.6153
470.6145
480.6176
490.6037
500.6232
510.6156
520.6204
530.6155
540.6154
550.6114
560.6048
570.6243
580.6248
590.6284
600.6150
610.6211
620.6107
630.6257
640.6367
650.6457
660.6434
670.6212
680.6441
690.6197
700.6365
710.6446
720.6357
730.6472
740.6248
750.6403
760.6306
770.6318
780.6294
790.6009
800.6414
810.6294
820.6347
830.6205
840.6373
850.6382
860.6281
870.6294
880.6236
890.6434
900.6423
910.6403
920.6351
930.6058
940.6489
950.6462
960.6356
970.6361
980.6515
990.6487
1000.6404
1010.6494
1020.6413
1030.6472
1040.6408
1050.6604
1060.6432
1070.6414
1080.6342
1090.6615
1100.6478
1110.6485
1120.6466
1130.6421
1140.6482
1150.6451
1160.6480
1170.6402
1180.6437
1190.6420
1200.6607
1210.6438
1220.6585
1230.6383
1240.6464
1250.6556
1260.6458
1270.6416
1280.6505
1290.6420
1300.6459
1310.6346
1320.6375
1330.6361
1340.6425
1350.6218
1360.6359
1370.6363
1380.6499
1390.6431
1400.6349
1410.6443
1420.6471
1430.6435
1440.6362
1450.6439
1460.6456
1470.6497
1480.6376
1490.6437
1500.6356
1510.6362
1520.6356
1530.6424
1540.6489
1550.6495
1560.6445
1570.6367
1580.6467
1590.6479
1600.6505
1610.6526
1620.6400
1630.6472
1640.6526
1650.6485
1660.6518
1670.6473
1680.6365
1690.6382
1700.6576
1710.6582
1720.6498
1730.6615
1740.6437
1750.6479
1760.6448
1770.6564
1780.6350
1790.6392
1800.6514
1810.6613
1820.6569
1830.6450
1840.6476
1850.6439
1860.6434
1870.6375
1880.6404
1890.6542
1900.6515
1910.6479
1920.6484
1930.6550
1940.6485
1950.6526
1960.6441
1970.6526
1980.6466
1990.6517
2000.6455
2010.6530
2020.6424
2030.6497
2040.6407
2050.6464
2060.6425
2070.6347
2080.6428
2090.6352
2100.6458
2110.6385
2120.6478
2130.6522
2140.6503
2150.6423
2160.6491
2170.6533
2180.6452
2190.6464
2200.6449
2210.6459
2220.6540
2230.6598
2240.6593
2250.6429
2260.6553
2270.6454
2280.6402
2290.6555
2300.6524
2310.6517
2320.6409
2330.6542
2340.6446
2350.6452
2360.6542
2370.6453
2380.6432
2390.6407
2400.6482
2410.6501
2420.6333
2430.6331
2440.6465
2450.6407
2460.6267
2470.6487
2480.6555
2490.6399
2500.6582
2510.6634
2520.6490
2530.6440
2540.6489
2550.6413
2560.6492
2570.6568
2580.6433
2590.6444
2600.6436
2610.6443
2620.6497
2630.6570
2640.6474
2650.6326
2660.6423
2670.6427
2680.6494
2690.6470
2700.6458
2710.6500
2720.6442
2730.6585
2740.6533
2750.6680
2760.6540
2770.6404
2780.6495
2790.6453
2800.6545
2810.6556
2820.6653
2830.6401
2840.6459
2850.6489
2860.6547
2870.6501
2880.6627
2890.6505
2900.6466
2910.6682
2920.6470
2930.6399
2940.6522
2950.6425
2960.6494
2970.6353
2980.6486
2990.6418
3000.6549
3010.6406
3020.6510
3030.6508
3040.6452
3050.6487
3060.6481
3070.6602
3080.6457
3090.6430
3100.6543
3110.6567
3120.6529
3130.6535
3140.6478
3150.6434
3160.6388
3170.6449
3180.6497
3190.6403
3200.6443
3210.6501
3220.6529
3230.6477
3240.6507
3250.6397
3260.6438
3270.6396
3280.6645
3290.6503
3300.6539
3310.6540
3320.6362
3330.6387
3340.6463
3350.6408
3360.6444
3370.6538
3380.6455
3390.6383
3400.6428
3410.6519
3420.6369
3430.6495
3440.6511
3450.6395
3460.6392
3470.6510
3480.6464
3490.6431
3500.6498
3510.6426
3520.6525
3530.6392
3540.6491
3550.6404
3560.6464
3570.6304
3580.6408
3590.6277
3600.6439
3610.6380
3620.6355
3630.6331
3640.6318
3650.6313
3660.6498
3670.6252
3680.6334
3690.6293
3700.6221
3710.6380
3720.6299
3730.6237
3740.6293
3750.6386
3760.6253
3770.6345
3780.6398
3790.6282
3800.6389
3810.6352
3820.6333
3830.6229
3840.6264
3850.6179
3860.6221
3870.6132
3880.6203
3890.6154
3900.6284
3910.6287
3920.6295
3930.6164
3940.6313
3950.6173
3960.6209
3970.6143
3980.6021
3990.5948
4000.6215
4010.6002
4020.6061
4030.6223
4040.6191
4050.6216
4060.6211
4070.6217
4080.6112
4090.6215
4100.6127
4110.6118
4120.6152
4130.6189
4140.6355
4150.6152
4160.6199
4170.6067
4180.6029
4190.5894
4200.6092
4210.6130
4220.6119
4230.6155
4240.6221
4250.6010
4260.6009
4270.5849
4280.6112
4290.6151
4300.6161
4310.6332
4320.6206
4330.6354
4340.6000
4350.6245
4360.5925
4370.5950
4380.5970
4390.5993
4400.6195
4410.6244
4420.6180
4430.6335
4440.6248
4450.6226
4460.6130
4470.5960
4480.6192
4490.5870
4500.6023
4510.6191
4520.5963
4530.6199
4540.6248
4550.6201
4560.6106
4570.6180
4580.6043
4590.6096
4600.5890
4610.5876
4620.6025
4630.5905
4640.6032
4650.5887
4660.5891
4670.6239
4680.6034
4690.6049
4700.6082
4710.6035
4720.5927
4730.5937
4740.6125
4750.6033
4760.6059
4770.6195
4780.6190
4790.5981
4800.6065
4810.5718
4820.5807
4830.5917
4840.6012
4850.6132
4860.6350
4870.6256
4880.6070
4890.6235
4900.5973
4910.6035
4920.5890
4930.5898
4940.5954
4950.5867
4960.6181
4970.6170
4980.6005
4990.6143
5000.5877
5010.5790
5020.5863
5030.5997
5040.6117
5050.6038
5060.6145
5070.6010
5080.5902
5090.5917
5100.6176
5110.5875
5120.5964
5130.6161
5140.6083
5150.6266
5160.6179
5170.6214
5180.6240
5190.5882
5200.6000
5210.6002
5220.5901
5230.6273
5240.6071
5250.6173
5260.6230
5270.5970
5280.5970
5290.5874
5300.5838
5310.5995
5320.5916
5330.6231
5340.5969
5350.5974
5360.5909
5370.6314
5380.6088
5390.6117
5400.6158
5410.5919
5420.6014
5430.5982
5440.5942
5450.6122
5460.6213
5470.6088
5480.5912
5490.5959
5500.6047
5510.5707
5520.5712
5530.5899
5540.5906
5550.6199
5560.6248
5570.6283
5580.6091
5590.6188
5600.6006
5610.5922
5620.5899
5630.6159
5640.6218
5650.6099
5660.6279
5670.6181
5680.5976
5690.6113
5700.6121
5710.5978
5720.5824
5730.5925
5740.6368
5750.6122
5760.6128
5770.6099
5780.5897
5790.6001
5800.5906
5810.6067
5820.6088
5830.6219
5840.6112
5850.6356
5860.5753
5870.6323
5880.5947
5890.5867
5900.5844
5910.6121
5920.5823
5930.6068
5940.5892
5950.5958
5960.6150
5970.6230
5980.6115
5990.5932
6000.6003
6010.5954
6020.6066
6030.6083
6040.5872
6050.6265
6060.6242
6070.5972
6080.6101
6090.5942
6100.6347
6110.5905
6120.5701
6130.5738
6140.6050
6150.6144
6160.6163
6170.5987
6180.6030
6190.6237
6200.6110
6210.6266
6220.6069
6230.5956
6240.6077
6250.6201
6260.6349
6270.6071
6280.6111
6290.6256
6300.5970
6310.6175
6320.6013
6330.6246
6340.5905
6350.6011
6360.6086
6370.6022
6380.6070
6390.6075
6400.6147
6410.6000
6420.6136
6430.6139
6440.6147
6450.6175
6460.6038
6470.6008
6480.6251
6490.5828
6500.6198
6510.5988
6520.6014
6530.5813
6540.6071
6550.6240
6560.6144
6570.6001
6580.6028
6590.5800
6600.5873
6610.6086
6620.5938
6630.6267
6640.5979
6650.6253
6660.6132
6670.6167
6680.6175
6690.6166
6700.5743
6710.6173
6720.6117
6730.6071
6740.5972
6750.6243
6760.6060
6770.6148
6780.6381
6790.6154
6800.6251
6810.5899
6820.5889
6830.6217
6840.6161
6850.5971
6860.6004
6870.6095
6880.6027
6890.6262
6900.5941
6910.6281
6920.6230
6930.6387
6940.6103
6950.6089
6960.6324
6970.6479
6980.6150
6990.6046
7000.5673
7010.6013
7020.5990
7030.6160
7040.6247
7050.6241
7060.6359
7070.6381
7080.6360
7090.6180
7100.6299
7110.6073
7120.6058
7130.5978
7140.6033
7150.6263
7160.6157
7170.6192
7180.6288
7190.6127
7200.6131
7210.5933
7220.6083
7230.5876
7240.6180
7250.5926
7260.6116
7270.6188
7280.5946
7290.6270
7300.6084
7310.6143
7320.6127
7330.6091
7340.6292
7350.6186
7360.6265
7370.6142
7380.6174
7390.6220
7400.6116
7410.6065
7420.6386
7430.6141
7440.6134
7450.6146
7460.5853
7470.6247
7480.6233
7490.6278
7500.6001
7510.6208
7520.6151
7530.6191
7540.6039
7550.6228
7560.6041
7570.6266
7580.6317
7590.5942
7600.6176
7610.6360
7620.6460
7630.6125
7640.6042
7650.6225
7660.6366
7670.6212
7680.6074
7690.5721
7700.6313
7710.6075
7720.6348
7730.6493
7740.6107
7750.6309
7760.6246
7770.6613
7780.6145
7790.6030
7800.6008
7810.6221
7820.6275
7830.6171
7840.6286
7850.6253
7860.6401
7870.6025
7880.6151
7890.5997
7900.6541
7910.6198
7920.6485
7930.6190
7940.6254
7950.6125
7960.6336
7970.6121
7980.5768
7990.6285
8000.6289
8010.5999
8020.6375
8030.6186
8040.6221
8050.6036
8060.6303
8070.6288
8080.6150
8090.6306
8100.6108
8110.5962
8120.6193
8130.6417
8140.5851
8150.6327
8160.6290
8170.6465
8180.6170
8190.6387
8200.6099
8210.6466
8220.6040
8230.6330
8240.6390
8250.5939
8260.6285
8270.6332
8280.6360
8290.6535
8300.6421
8310.6272
8320.6421
8330.5994
8340.6316
8350.5992
8360.6575
8370.6189
8380.6062
8390.6117
8400.6295
8410.6351
8420.6254
8430.6193
8440.6300
8450.6032
8460.6307
8470.6393
8480.6409
8490.6526
8500.6369
8510.6027
8520.5881
8530.6386
8540.6127
8550.6488
8560.6279
8570.6132
8580.6609
8590.6433
8600.6519
8610.6087
8620.6520
8630.6404
8640.6328
8650.6171
8660.6477
8670.6470
8680.5980
8690.6467
8700.6252
8710.6257
8720.6282
8730.6345
8740.6143
8750.6246
8760.6381
8770.6713
8780.6036
8790.6403
8800.6373
8810.6266
8820.6080
8830.6376
8840.6333
8850.6349
8860.6556
8870.6422
8880.6553
8890.5948
8900.6485
8910.6035
8920.6268
8930.6221
8940.6587
8950.6087
8960.6536
8970.6286
8980.6468
8990.6306
9000.6355
9010.6305
9020.6104
9030.6282
9040.6271
9050.6249
9060.6477
9070.6183
9080.6579
9090.6432
9100.6279
9110.6365
9120.6073
9130.6407
9140.6609
9150.6052
9160.6200
9170.6401
9180.6417
9190.6478
9200.6139
9210.6240
9220.6506
9230.6325
9240.6700
9250.6435
9260.6285
9270.6322
9280.6537
9290.6761
9300.6225
9310.6172
9320.6360
9330.6261
9340.6402
9350.6442
9360.6501
9370.6418
9380.6465
9390.6269
9400.6469
9410.6386
9420.6376
9430.6084
9440.6514
9450.6314
9460.6396
9470.6386
9480.6288
9490.6237
9500.6294
9510.6647
9520.6164
9530.6452
9540.6431
9550.6230
9560.6132
9570.6345
9580.6320
9590.6460
9600.6355
9610.6307
9620.6047
9630.6162
9640.6328
9650.6366
9660.6310
9670.6333
9680.6486
9690.6193
9700.6420
9710.6375
9720.6363
9730.6244
9740.6377
9750.6426
9760.6276
9770.6084
9780.6536
9790.6194
9800.6388
9810.6731
9820.6328
9830.6795
9840.6331
9850.6243
9860.6292
9870.6147
9880.6150
9890.6170
9900.6251
9910.6127
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Measured result

Verbatim from the run's summary.json.

bucket
bucket-p32-t128
bucket_icons
3359
calibration_samples
256
calibration_withheld_from_training
true
checkpoint_bytes
6463494
checkpoint_round_trip
true
checkpoint_sha256
90c15badb537045b…
config_sha256
359d06bd2530822e…
corruption
factorized_marginal_respecting_geometry
cuda_version
13.4
decision_threshold
0.818313113807048
deterministic_algorithms
true
device
cuda
eval_every
60
final_train
loss
0.964240550994873
step
2700
train_token_accuracy
0.6169747081712063
group_vocabulary_size
12
locked_path_exact
true
metrics_sha256
6697f23f15c849e0…
model_parameters
525152
schema_version
1
scope
dominant-bucket fixed-topology geometry pilot; not unconditional generation
selected_train_rows
color/svg/1F3F4-E0064-E0065-E0062-E0065-E007F.svg, color/svg/1F468-1F3FC-200D-1F9BC.svg, color/svg/1F561.svg, color/svg/1F469-1F3FE-200D-1F9BC.svg, color/svg/1F469-1F3FD-200D-2764-FE0F-200D-1F48B-200D-1F469-1F3FE.svg, color/svg/1F6B5-1F3FB-200D-2642-FE0F.svg … and 2419 more
selected_validation_rows
color/svg/1F994.svg, color/svg/E30A.svg, color/svg/1F6BE.svg, color/svg/1F3CA-1F3FB-200D-2642-FE0F.svg, color/svg/1F3CB-1F3FC-200D-2642-FE0F.svg, color/svg/1F93D-1F3FC.svg … and 122 more
selection
completed_steps
2700
evals_without_improvement
8
min_delta
0.0
objective
held_out_loss
patience_evals
8
selected_held_out_loss
1.0360467433929443
selected_step
2220
stopped_early
true
steps
6300
study_version
openmoji-g1-withheld-calibration-v14
subgroup_vocabulary_size
118
torch_version
2.14.0a0+4fdf77b940.nv26.08
train_value_accuracy
0.2220261207200847
validation
accuracy
0.6542691461707658
changed_accuracy
0.04232121081701456
changed_total
13941
loss
1.0360467433929443
retained_accuracy
0.9815475505428319
retained_total
26067
validation_final_step
accuracy
0.5949810037992401
changed_accuracy
0.07818664371278962
changed_total
13941
loss
1.0439848899841309
retained_accuracy
0.8713699313308014
retained_total
26067
validation_trace_sha256
4484c0d829990c73…
validation_untrained
accuracy
0.33385822835432916
changed_accuracy
0.0011476938526648016
changed_total
13941
loss
1.745607614517212
retained_accuracy
0.511796524341121
retained_total
26067

Written result

v12 was the first model here to beat the identity baseline — emit the corrupted input unchanged — but only with a decode threshold fitted on held-out icons. Its own argmax decode lost by 0.0429. Two runs removed that asterisk.

The threshold is derivable rather than arbitrary. Keeping a retained field is always right; changing one is right only if the value head re-predicts the same token, which is negligible. So changing at confidence p has expected gain p·q − (1 − p), positive exactly when

p > 1 / (1 + q)

with q the value head's accuracy on genuinely corrupted fields.

v13 estimated q on train icons and got 0.2751, against 0.1233 held out — the value head is much better on what it trained on. That gave a threshold of 0.784 where the held-out accuracy implies 0.890, so the model edited more than paid and beat identity by only 0.0003. This run estimates q on 256 icons withheld from training.

Result

qthresholdaggregateidentitymargin
v12, argmax decode—0.5000.60860.6515−0.0429
v12, threshold fitted on held-out icons—0.9240.65670.6502+0.0065 *
v13, q from icons it trained on0.27510.7840.65190.6515+0.0003
v14, q from withheld icons0.22200.8180.65430.6515+0.0027

\* fitted on held-out data, which is why it needed an asterisk.

criterionthresholdobservedoutcome
beats_identity_without_touching_held_out_data> identity+0.0027pass
improves_on_the_trained_on_estimate> 0.0003+0.0027pass
threshold_reflects_an_honest_estimate0.7842 < t < 0.950.8183pass
structural_safetylocked-path exact, round-tripsboth truepass
reproducibilityidentical rerunidenticalpass

All four pass, and the run is handicapped: withholding 256 icons also removes them from training, so it learned from 2,425 rather than 2,681 — 9.6% less data than every run it is compared against. The margin is conservative for that reason.

Retained-token accuracy is 0.9815, the highest of any model in this project and close to identity's 1.0, while changed-token recovery stays at 0.0423. The model has learned to leave things alone unless it is nearly certain, which is exactly what the break-even rule asks of it.

What is now established

Nothing in this run is fitted on held-out data. The threshold comes from icons the model never trained on, the model selects its checkpoint on held-out loss as every run here does, and the identity comparison is a plain read of the result. The project has a denoiser that does better than doing nothing, with no caveat about how the number was obtained.

What is not

The margin is +0.0027 on token accuracy — about 0.4% relative. This is not a good model; it is a model that has stopped being worse than useless. The value head still reaches only 0.222 on withheld corrupted fields, which is why the break-even threshold sits at 0.818 and the model edits just 4% of fields.

The measured next step is unchanged and remains the task-formulation lens's: the value head predicts an exact bin on a quarter-unit metric lattice through a categorical softmax, so being close earns nothing. A distance-kernel target would give partial credit for proximity, which should lift q, which lowers the break-even threshold, which lets the model edit more of what it correctly detects. Every term in that chain is now measured.

Scope

Fixed-topology and geometry-only, single seed, marginal-respecting corruption at 0.35, token accuracy rather than renders. The project's primary/test split remains untouched. No render in this project has yet produced a recognizable icon, and this run does not change that.

State transitions

  1. planned2026-09-21T03:30:00Z
  2. completed2026-09-21T03:40:00Zbeats_the_identity_baseline_with_nothing_fitted_on_held_out_data

Run record

Verbatim from runs/openmoji-g1-withheld-calibration-v14-dbfc543-359d06bd-9b9b1699/run.yaml, the record committed before launch.

schema_version
1
run_id
openmoji-g1-withheld-calibration-v14-dbfc543-359d06bd-9b9b1699
state
completed
parent_run
openmoji-g1-derived-threshold-v13-7c73fab-1687c462-9b9b1699
hypothesis
v13 beat identity without any held-out calibration, 0.6519 against 0.6515, but by only 0.0003, because it estimated the value head's accuracy on icons the model had trained on. There it scores 0.2751 against 0.1233 held out, so the derived threshold came out at 0.784 where the held-out accuracy implies 0.890 - too permissive, so the model edits more than pays. Estimating that accuracy on 256 train icons withheld from training should give a threshold near 0.89 and a margin closer to the 0.0065 a fitted threshold achieved, while still never touching held-out data.
expected_information_gain
It closes the last gap between the project's first win over the trivial policy and a win that needs no asterisk at all: no sweep, no held-out calibration, and a threshold the model derives from data it never trained on.
scope_limits
Fixed-topology and geometry-only, single seed, marginal-respecting corruption at 0.35, token accuracy rather than renders. Withholding 256 icons also removes them from training, so the model sees 2,425 rather than 2,681 - a 9.6% reduction that works against this run and is disclosed rather than hidden.
changed_factors
primary
training.calibration_samples 0 -> 256. The last 256 icons of the deterministic train selection are withheld from training and used only to estimate the value accuracy that sets the decode threshold.
disclosed_side_effect
Training data drops from 2,681 to 2,425 icons. That is a real 9.6% reduction and it works against the hypothesis, so a pass is conservative and a narrow failure should be read with it in mind.
parameters
unchanged at 525,152
held_fixed
v13 exactly otherwise.
code
git_commit
dbfc543
execution_mode
native-local
config
path
configs/learning/openmoji-g1-withheld-calibration-v14.yaml
sha256
359d06bd2530822e…
dataset
hybrid_sha256
9b9b1699677a6f97…
bucket
bucket-p32-t128
train_samples
2681
trained_on
2425
calibration_samples
256
validation_samples
128
baselines
identity
0.6515
v12_argmax
0.6086
v12_threshold_fitted_on_held_out_icons
evaluation_half
0.6567
identity_there
0.6502
margin
0.0065
v13_threshold_from_trained_on_icons
aggregate
0.6519
threshold
0.7842
q
0.2751
margin
0.0003
held_out_value_accuracy_implying_threshold_0.890
0.1233
predeclared_criteria
evaluated_at
the checkpoint selected by held-out loss, decoded at the derived threshold
primary
id
beats_identity_without_touching_held_out_data
statement
Held-out aggregate token accuracy exceeds the identity policy's, computed from this run's own totals. Nothing in this run fits anything on held-out data.
id
improves_on_the_trained_on_estimate
statement
The margin over identity exceeds v13's 0.0003, despite training on 9.6% fewer icons.
id
threshold_reflects_an_honest_estimate
statement
The derived threshold exceeds v13's 0.7842 and lies below 0.95. A withheld estimate should be lower than the trained-on one and therefore a higher, more cautious threshold.
id
structural_safety
statement
Locked-path exactness holds and the canonical checkpoint round-trips.
id
reproducibility
statement
A second complete invocation returns an identical JSON result.
reported_not_gated
the withheld value accuracy against v13's trained-on 0.2751 and the held-out 0.1233, changed and retained accuracy, which move in opposite directions by design
falsification_meaning
If the withheld estimate does not improve the margin, then the gap between the trained-on and held-out value accuracy is not what limits the threshold, and the remaining explanation is that the break-even rule itself is too crude - it assumes changing a retained field is never right. The fix would then be to estimate the full 2x2 outcome table on the withheld slice rather than the single scalar q.
outputs
local_metadata
runs/openmoji-g1-withheld-calibration-v14-dbfc543-359d06bd-9b9b1699
report_root
reports/learning/openmoji-g1-withheld-calibration-v14
durable_artifacts
/home/dev/.cache/openmoji-g1-withheld-calibration-v14-dbfc543-359d06bd-9b9b1699
planned_at
2026-09-21 03:30:00+00:00
completed_at
2026-09-21 03:40:00+00:00
result
device
cuda
trained_on_icons
2425
calibration_icons_withheld
256
withheld_value_accuracy
0.222
derived_threshold
0.8183
held_out
aggregate
0.6543
changed
0.0423
retained
0.9815
identity_baseline
0.6515
margin
0.0027
identical_rerun
true
predeclared_outcome
overall
passed
beats_identity_without_touching_held_out_data
passed
true
observed
0.6543
threshold
0.6515
improves_on_the_trained_on_estimate
passed
true
observed
0.0027
threshold
0.0003
threshold_reflects_an_honest_estimate
passed
true
observed
0.8183
bounds
0.7842, 0.95
structural_safety
passed
true
reproducibility
passed
true
conclusion
The project beats the trivial policy with nothing fitted on held-out data: the decode threshold is derived from 256 icons withheld from training, the checkpoint is selected on held-out loss as every run here does, and the identity comparison is a plain read. Retained-token accuracy is 0.9815, the highest of any model here. The run is handicapped by its own design, training on 2,425 icons rather than 2,681, so the margin is conservative.
honest_limits
The margin is +0.0027 on token accuracy, about 0.4% relative. This is not a good model; it is a model that has stopped being worse than useless. The value head reaches only 0.222 on withheld corrupted fields, which is why the break-even threshold sits at 0.818 and the model edits just 4% of fields. No render in this project has produced a recognizable icon and this run does not change that.