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The dataset generation failed
Error code: DatasetGenerationError
Exception: CastError
Message: Couldn't cast
start_year: int64
evaluated_at: string
n_test_days: int64
ann_return: double
sharpe: double
max_drawdown: double
calmar: double
hit_ratio: double
final_equity: double
benchmark_sharpe: struct<SPY: double, AGG: double>
child 0, SPY: double
child 1, AGG: double
benchmark_ann: struct<SPY: double, AGG: double>
child 0, SPY: double
child 1, AGG: double
benchmark_equity: struct<SPY: list<item: double>, AGG: list<item: double>>
child 0, SPY: list<item: double>
child 0, item: double
child 1, AGG: list<item: double>
child 0, item: double
test_dates: list<item: timestamp[s]>
child 0, item: timestamp[s]
allocation_pct: struct<TLT: double, GLD: double, VNQ: double, SLV: double, HYG: double, CASH: double>
child 0, TLT: double
child 1, GLD: double
child 2, VNQ: double
child 3, SLV: double
child 4, HYG: double
child 5, CASH: double
equity_curve: list<item: double>
child 0, item: double
allocations: list<item: string>
child 0, item: string
fee_bps: int64
tsl_pct: double
z_reentry: double
n_episodes: int64
state_size: int64
n_features: int64
option: string
lookback: int64
best_val_sharpe: double
test_sharpe: double
test_days: int64
train_days: int64
val_days: int64
history: list<item: struct<episode: int64, train_sharpe: double, train_equity: double, val_sharpe: double, va (... 53 chars omitted)
child 0, item: struct<episode: int64, train_sharpe: double, train_equity: double, val_sharpe: double, val_equity: d (... 41 chars omitted)
child 0, episode: int64
child 1, train_sharpe: double
child 2, train_equity: double
child 3, val_sharpe: double
child 4, val_equity: double
child 5, avg_loss: double
child 6, epsilon: double
trained_at: string
test_equity: double
n_etfs: int64
to
{'option': Value('string'), 'start_year': Value('int64'), 'n_episodes': Value('int64'), 'fee_bps': Value('int64'), 'lookback': Value('int64'), 'state_size': Value('int64'), 'n_features': Value('int64'), 'n_etfs': Value('int64'), 'trained_at': Value('string'), 'best_val_sharpe': Value('float64'), 'test_sharpe': Value('float64'), 'test_equity': Value('float64'), 'train_days': Value('int64'), 'val_days': Value('int64'), 'test_days': Value('int64'), 'history': List({'episode': Value('int64'), 'train_sharpe': Value('float64'), 'train_equity': Value('float64'), 'val_sharpe': Value('float64'), 'val_equity': Value('float64'), 'avg_loss': Value('float64'), 'epsilon': Value('float64')})}
because column names don't match
Traceback: Traceback (most recent call last):
File "/usr/local/lib/python3.12/site-packages/datasets/builder.py", line 1779, in _prepare_split_single
for key, table in generator:
^^^^^^^^^
File "/usr/local/lib/python3.12/site-packages/datasets/packaged_modules/json/json.py", line 299, in _generate_tables
self._cast_table(pa_table, json_field_paths=json_field_paths),
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.12/site-packages/datasets/packaged_modules/json/json.py", line 128, in _cast_table
pa_table = table_cast(pa_table, self.info.features.arrow_schema)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.12/site-packages/datasets/table.py", line 2321, in table_cast
return cast_table_to_schema(table, schema)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.12/site-packages/datasets/table.py", line 2249, in cast_table_to_schema
raise CastError(
datasets.table.CastError: Couldn't cast
start_year: int64
evaluated_at: string
n_test_days: int64
ann_return: double
sharpe: double
max_drawdown: double
calmar: double
hit_ratio: double
final_equity: double
benchmark_sharpe: struct<SPY: double, AGG: double>
child 0, SPY: double
child 1, AGG: double
benchmark_ann: struct<SPY: double, AGG: double>
child 0, SPY: double
child 1, AGG: double
benchmark_equity: struct<SPY: list<item: double>, AGG: list<item: double>>
child 0, SPY: list<item: double>
child 0, item: double
child 1, AGG: list<item: double>
child 0, item: double
test_dates: list<item: timestamp[s]>
child 0, item: timestamp[s]
allocation_pct: struct<TLT: double, GLD: double, VNQ: double, SLV: double, HYG: double, CASH: double>
child 0, TLT: double
child 1, GLD: double
child 2, VNQ: double
child 3, SLV: double
child 4, HYG: double
child 5, CASH: double
equity_curve: list<item: double>
child 0, item: double
allocations: list<item: string>
child 0, item: string
fee_bps: int64
tsl_pct: double
z_reentry: double
n_episodes: int64
state_size: int64
n_features: int64
option: string
lookback: int64
best_val_sharpe: double
test_sharpe: double
test_days: int64
train_days: int64
val_days: int64
history: list<item: struct<episode: int64, train_sharpe: double, train_equity: double, val_sharpe: double, va (... 53 chars omitted)
child 0, item: struct<episode: int64, train_sharpe: double, train_equity: double, val_sharpe: double, val_equity: d (... 41 chars omitted)
child 0, episode: int64
child 1, train_sharpe: double
child 2, train_equity: double
child 3, val_sharpe: double
child 4, val_equity: double
child 5, avg_loss: double
child 6, epsilon: double
trained_at: string
test_equity: double
n_etfs: int64
to
{'option': Value('string'), 'start_year': Value('int64'), 'n_episodes': Value('int64'), 'fee_bps': Value('int64'), 'lookback': Value('int64'), 'state_size': Value('int64'), 'n_features': Value('int64'), 'n_etfs': Value('int64'), 'trained_at': Value('string'), 'best_val_sharpe': Value('float64'), 'test_sharpe': Value('float64'), 'test_equity': Value('float64'), 'train_days': Value('int64'), 'val_days': Value('int64'), 'test_days': Value('int64'), 'history': List({'episode': Value('int64'), 'train_sharpe': Value('float64'), 'train_equity': Value('float64'), 'val_sharpe': Value('float64'), 'val_equity': Value('float64'), 'avg_loss': Value('float64'), 'epsilon': Value('float64')})}
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 1347, in compute_config_parquet_and_info_response
parquet_operations = convert_to_parquet(builder)
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 980, in convert_to_parquet
builder.download_and_prepare(
File "/usr/local/lib/python3.12/site-packages/datasets/builder.py", line 882, in download_and_prepare
self._download_and_prepare(
File "/usr/local/lib/python3.12/site-packages/datasets/builder.py", line 943, in _download_and_prepare
self._prepare_split(split_generator, **prepare_split_kwargs)
File "/usr/local/lib/python3.12/site-packages/datasets/builder.py", line 1646, in _prepare_split
for job_id, done, content in self._prepare_split_single(
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.12/site-packages/datasets/builder.py", line 1832, 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.
option string | start_year int64 | n_episodes int64 | fee_bps int64 | lookback int64 | state_size int64 | n_features int64 | n_etfs int64 | trained_at string | best_val_sharpe float64 | test_sharpe float64 | test_equity float64 | train_days int64 | val_days int64 | test_days int64 | history list |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
a | 2,015 | 220 | 10 | 20 | 3,048 | 152 | 7 | 2026-05-16T05:59:02.763015 | 1.5272 | 1.5016 | 1.493 | 2,267 | 265 | 267 | [
{
"episode": 201,
"train_sharpe": 9.946,
"train_equity": 7482.5617,
"val_sharpe": -0.131,
"val_equity": 1.0091,
"avg_loss": 0.00021,
"epsilon": 0.2233
},
{
"episode": 202,
"train_sharpe": 9.871,
"train_equity": 8408.578,
"val_sharpe": -1.759,
"val_equity": 0.8955,... |
b | 2,015 | 220 | 10 | 20 | 8,261 | 412 | 20 | 2026-05-16T08:45:27.081660 | 1.8884 | 1.765 | 1.4031 | 2,267 | 265 | 267 | [
{
"episode": 201,
"train_sharpe": -1.568,
"train_equity": 0.7763,
"val_sharpe": 0,
"val_equity": 1.0384,
"avg_loss": 0,
"epsilon": 0.2199
},
{
"episode": 202,
"train_sharpe": -1.802,
"train_equity": 0.6292,
"val_sharpe": 0,
"val_equity": 1.0312,
"avg_loss": 0,... |
null | 2,015 | 220 | 10 | 20 | 3,048 | 152 | null | 2026-03-27T05:12:53.388585 | 2.0916 | 2.5229 | 1.4407 | 2,239 | 262 | 263 | [
{
"episode": 201,
"train_sharpe": 10.478,
"train_equity": 45883.4125,
"val_sharpe": 0.676,
"val_equity": 1.0788,
"avg_loss": 0.000201,
"epsilon": 0.2236
},
{
"episode": 202,
"train_sharpe": 10.61,
"train_equity": 19116.4899,
"val_sharpe": 0.652,
"val_equity": 1.06... |
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