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The dataset generation failed
Error code: DatasetGenerationError
Exception: CastError
Message: Couldn't cast
mid: string
srand: int64
quan: int64
users: list<item: string>
child 0, item: string
end: string
winner: int64
zimo: bool
dealin: int64
fan_cnt: int64
fans: list<item: list<item: string>>
child 0, item: list<item: string>
child 0, item: string
scores: list<item: int64>
child 0, item: int64
n_disc: int64
errs: struct<>
logs: null
success: bool
_mid: string
viewurl: string
initdata: string
status: string
players: list<item: struct<name: string, imgid: string>>
child 0, item: struct<name: string, imgid: string>
child 0, name: string
child 1, imgid: string
to
{'status': Value('string'), 'logs': List(Json(decode=True)), 'players': List({'name': Value('string'), 'imgid': Value('string')}), 'initdata': Value('string'), 'viewurl': Value('string'), 'success': Value('bool'), '_mid': Value('string')}
because column names don't match
Traceback: Traceback (most recent call last):
File "/usr/local/lib/python3.14/site-packages/datasets/builder.py", line 1816, in _prepare_split_single
for key, table in generator:
^^^^^^^^^
File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 613, in wrapped
for item in generator(*args, **kwargs):
~~~~~~~~~^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 343, in _generate_tables
self._cast_table(pa_table, json_field_paths=json_field_paths),
~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 132, in _cast_table
pa_table = table_cast(pa_table, self.info.features.arrow_schema)
File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2369, in table_cast
return cast_table_to_schema(table, schema)
File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2297, in cast_table_to_schema
raise CastError(
...<3 lines>...
)
datasets.table.CastError: Couldn't cast
mid: string
srand: int64
quan: int64
users: list<item: string>
child 0, item: string
end: string
winner: int64
zimo: bool
dealin: int64
fan_cnt: int64
fans: list<item: list<item: string>>
child 0, item: list<item: string>
child 0, item: string
scores: list<item: int64>
child 0, item: int64
n_disc: int64
errs: struct<>
logs: null
success: bool
_mid: string
viewurl: string
initdata: string
status: string
players: list<item: struct<name: string, imgid: string>>
child 0, item: struct<name: string, imgid: string>
child 0, name: string
child 1, imgid: string
to
{'status': Value('string'), 'logs': List(Json(decode=True)), 'players': List({'name': Value('string'), 'imgid': Value('string')}), 'initdata': Value('string'), 'viewurl': Value('string'), 'success': Value('bool'), '_mid': Value('string')}
because column names don't match
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 1369, in compute_config_parquet_and_info_response
parquet_operations, partial, estimated_dataset_info = stream_convert_to_parquet(
~~~~~~~~~~~~~~~~~~~~~~~~~^
builder, max_dataset_size_bytes=max_dataset_size_bytes
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
)
^
File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 948, in stream_convert_to_parquet
builder._prepare_split(split_generator=splits_generators[split], file_format="parquet")
~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.14/site-packages/datasets/builder.py", line 1683, in _prepare_split
for job_id, done, content in self._prepare_split_single(
~~~~~~~~~~~~~~~~~~~~~~~~~~^
gen_kwargs=gen_kwargs, job_id=job_id, **_prepare_split_args
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
):
^
File "/usr/local/lib/python3.14/site-packages/datasets/builder.py", line 1869, in _prepare_split_single
raise DatasetGenerationError("An error occurred while generating the dataset") from e
datasets.exceptions.DatasetGenerationError: An error occurred while generating the datasetNeed help to make the dataset viewer work? Make sure to review how to configure the dataset viewer, and open a discussion for direct support.
status string | logs list | players list | initdata string | viewurl string | success bool | _mid string |
|---|---|---|---|---|---|---|
finished | [
{
"keep_running": false,
"memory": 227,
"output": {
"command": "request",
"content": {
"0": "0 0 0",
"1": "0 1 0",
"2": "0 2 0",
"3": "0 3 0"
},
"display": {
"action": "INIT",
"canHu": [
0,
0,
0,
... | [
{
"name": "[player152]player2",
"imgid": "/avatar/6a12572eb3075a37ae0a1760.png"
},
{
"name": "[kong]shiro",
"imgid": "/avatar/691d732d36184360c6f585e7.png"
},
{
"name": "[QiuQiuR]丘丘人",
"imgid": "/avatar/64479d3637d38a1cc585553e.png"
},
{
"name": "[moyu]kdens3",
"imgid": "... | {"quan":0,"srand":2143175072,"walltiles":"W4 F3 W7 T7 W6 B1 B5 W3 W3 W9 T6 B3 T5 W2 B6 J1 J3 W2 W6 B4 T8 B9 W4 W5 T2 B9 J1 B8 J1 T9 F1 B4 B3 T1 T5 W3 W8 W3 F2 B5 W9 T7 B7 B2 F4 B5 W7 W1 T8 F2 T9 T4 B8 W8 B6 J2 W8 T3 B6 F4 W4 F3 B3 B2 W6 B1 B1 B8 T1 B1 T3 B2 W1 B8 T5 W1 W8 T2 B9 T5 F4 B3 T7 W4 T2 B2 W1 W7 W9 T2 T3 T4 T1... | /gameplayers/Chinese-Standard-Mahjong.html | true | 6a4eba831ba515095a1f155b |
finished | [
{
"keep_running": false,
"memory": 215,
"output": {
"command": "request",
"content": {
"0": "0 0 0",
"1": "0 1 0",
"2": "0 2 0",
"3": "0 3 0"
},
"display": {
"action": "INIT",
"canHu": [
0,
0,
0,
... | [
{
"name": "[moyu]kdens3",
"imgid": "/avatar/6a1a779558ebe27b1977016b.png"
},
{
"name": "[kong]shiro",
"imgid": "/avatar/691d732d36184360c6f585e7.png"
},
{
"name": "[player152]player2",
"imgid": "/avatar/6a12572eb3075a37ae0a1760.png"
},
{
"name": "[QiuQiuR]丘丘人",
"imgid": "... | {"quan":0,"srand":2143175072,"walltiles":"W4 F3 W7 T7 W6 B1 B5 W3 W3 W9 T6 B3 T5 W2 B6 J1 J3 W2 W6 B4 T8 B9 W4 W5 T2 B9 J1 B8 J1 T9 F1 B4 B3 T1 T5 W3 W8 W3 F2 B5 W9 T7 B7 B2 F4 B5 W7 W1 T8 F2 T9 T4 B8 W8 B6 J2 W8 T3 B6 F4 W4 F3 B3 B2 W6 B1 B1 B8 T1 B1 T3 B2 W1 B8 T5 W1 W8 T2 B9 T5 F4 B3 T7 W4 T2 B2 W1 W7 W9 T2 T3 T4 T1... | /gameplayers/Chinese-Standard-Mahjong.html | true | 6a4eba831ba515095a1f1574 |
finished | [
{
"keep_running": false,
"memory": 2,
"output": {
"command": "request",
"content": {
"0": "0 0 0",
"1": "0 1 0",
"2": "0 2 0",
"3": "0 3 0"
},
"display": {
"action": "INIT",
"canHu": [
0,
0,
0,
... | [
{
"name": "[QiuQiuR]丘丘人",
"imgid": "/avatar/64479d3637d38a1cc585553e.png"
},
{
"name": "[moyu]kdens3",
"imgid": "/avatar/6a1a779558ebe27b1977016b.png"
},
{
"name": "[kong]shiro",
"imgid": "/avatar/691d732d36184360c6f585e7.png"
},
{
"name": "[player152]player2",
"imgid": "... | {"quan":0,"srand":2143175072,"walltiles":"W4 F3 W7 T7 W6 B1 B5 W3 W3 W9 T6 B3 T5 W2 B6 J1 J3 W2 W6 B4 T8 B9 W4 W5 T2 B9 J1 B8 J1 T9 F1 B4 B3 T1 T5 W3 W8 W3 F2 B5 W9 T7 B7 B2 F4 B5 W7 W1 T8 F2 T9 T4 B8 W8 B6 J2 W8 T3 B6 F4 W4 F3 B3 B2 W6 B1 B1 B8 T1 B1 T3 B2 W1 B8 T5 W1 W8 T2 B9 T5 F4 B3 T7 W4 T2 B2 W1 W7 W9 T2 T3 T4 T1... | /gameplayers/Chinese-Standard-Mahjong.html | true | 6a4eba831ba515095a1f158d |
finished | [{"keep_running":false,"memory":148,"output":{"command":"request","content":{"0":"0 0 0","1":"0 1 0"(...TRUNCATED) | [{"name":"[QiuQiuR]丘丘人","imgid":"/avatar/64479d3637d38a1cc585553e.png"},{"name":"[moyu]kdens3"(...TRUNCATED) | "{\"quan\":0,\"srand\":2143175072,\"walltiles\":\"W4 F3 W7 T7 W6 B1 B5 W3 W3 W9 T6 B3 T5 W2 B6 J1 J3(...TRUNCATED) | /gameplayers/Chinese-Standard-Mahjong.html | true | 6a4eba831ba515095a1f1588 |
finished | [{"keep_running":false,"memory":325,"output":{"command":"request","content":{"0":"0 0 0","1":"0 1 0"(...TRUNCATED) | [{"name":"[kong]shiro","imgid":"/avatar/691d732d36184360c6f585e7.png"},{"name":"[player152]player2",(...TRUNCATED) | "{\"quan\":0,\"srand\":2143175072,\"walltiles\":\"W4 F3 W7 T7 W6 B1 B5 W3 W3 W9 T6 B3 T5 W2 B6 J1 J3(...TRUNCATED) | /gameplayers/Chinese-Standard-Mahjong.html | true | 6a4eba831ba515095a1f15a1 |
finished | [{"keep_running":false,"memory":313,"output":{"command":"request","content":{"0":"0 0 0","1":"0 1 0"(...TRUNCATED) | [{"name":"[moyu]kdens3","imgid":"/avatar/6a1a779558ebe27b1977016b.png"},{"name":"[QiuQiuR]丘丘人"(...TRUNCATED) | "{\"quan\":0,\"srand\":2143175072,\"walltiles\":\"W4 F3 W7 T7 W6 B1 B5 W3 W3 W9 T6 B3 T5 W2 B6 J1 J3(...TRUNCATED) | /gameplayers/Chinese-Standard-Mahjong.html | true | 6a4eba831ba515095a1f156f |
finished | [{"keep_running":false,"memory":242,"output":{"command":"request","content":{"0":"0 0 0","1":"0 1 0"(...TRUNCATED) | [{"name":"[QiuQiuR]丘丘人","imgid":"/avatar/64479d3637d38a1cc585553e.png"},{"name":"[player152]pl(...TRUNCATED) | "{\"quan\":0,\"srand\":2143175072,\"walltiles\":\"W4 F3 W7 T7 W6 B1 B5 W3 W3 W9 T6 B3 T5 W2 B6 J1 J3(...TRUNCATED) | /gameplayers/Chinese-Standard-Mahjong.html | true | 6a4eba831ba515095a1f1583 |
finished | [{"keep_running":false,"memory":215,"output":{"command":"request","content":{"0":"0 0 0","1":"0 1 0"(...TRUNCATED) | [{"name":"[kong]shiro","imgid":"/avatar/691d732d36184360c6f585e7.png"},{"name":"[QiuQiuR]丘丘人",(...TRUNCATED) | "{\"quan\":0,\"srand\":2143175072,\"walltiles\":\"W4 F3 W7 T7 W6 B1 B5 W3 W3 W9 T6 B3 T5 W2 B6 J1 J3(...TRUNCATED) | /gameplayers/Chinese-Standard-Mahjong.html | true | 6a4eba831ba515095a1f15b5 |
finished | [{"keep_running":false,"memory":50,"output":{"command":"request","content":{"0":"0 0 0","1":"0 1 0",(...TRUNCATED) | [{"name":"[player152]player2","imgid":"/avatar/6a12572eb3075a37ae0a1760.png"},{"name":"[moyu]kdens3"(...TRUNCATED) | "{\"quan\":0,\"srand\":2143175072,\"walltiles\":\"W4 F3 W7 T7 W6 B1 B5 W3 W3 W9 T6 B3 T5 W2 B6 J1 J3(...TRUNCATED) | /gameplayers/Chinese-Standard-Mahjong.html | true | 6a4eba831ba515095a1f1547 |
finished | [{"keep_running":false,"memory":280,"output":{"command":"request","content":{"0":"0 0 0","1":"0 1 0"(...TRUNCATED) | [{"name":"[QiuQiuR]丘丘人","imgid":"/avatar/64479d3637d38a1cc585553e.png"},{"name":"[player152]pl(...TRUNCATED) | "{\"quan\":0,\"srand\":2143175072,\"walltiles\":\"W4 F3 W7 T7 W6 B1 B5 W3 W3 W9 T6 B3 T5 W2 B6 J1 J3(...TRUNCATED) | /gameplayers/Chinese-Standard-Mahjong.html | true | 6a4eba831ba515095a1f157e |
End of preview.
IJCAI-2026 MCR Mahjong — Training Corpora
Behavior-cloning / distillation corpora for the IJCAI-2026 MCR Mahjong campaign
(entry kdens3). Code: https://github.com/SuuTTT/IJCAI-mahjong.
Companion repos: models Dannibal/ijcai-mahjong-ckpts-2026, eval testset
Dannibal/mcr-final2026-testset.
Files
| File | Size | Description |
|---|---|---|
cooked_single.npz |
184M | Base BC training corpus cooked from the 2025 agents pool (features + move labels). |
cooked_quarter.npz |
59M | Quarter-size subset of cooked_single for fast iteration / ablations. |
final2_cai_corpus.npz |
23M | Final-2 CAI (champion-imitation) corpus harvested from final-stage games. |
final2_bc_corpus.npz |
30M | Final-2 behavior-cloning corpus. |
final2_all.jsonl.gz |
46M | Raw final-2 game replays (one game per line). |
final2_games_summary.jsonl.gz |
0.2M | Per-game summary rows for the final-2 harvest. |
The .npz files are numpy archives (load with numpy.load(..., allow_pickle=False));
the harvest/build scripts (harvest.py, build_corpus_cai.py, analyze.py) are in
campaign/final2_harvest/ of the code repo.
Not included (regenerable)
Self-play shard corpora used for the opponent-belief and deal-in predictors
(oppbelief ~4.3G, oppdealin ~1.8G) are regenerable from the self-play
generators in train/caiest_repro and are not stored here.
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