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The dataset generation failed
Error code:   DatasetGenerationError
Exception:    CastError
Message:      Couldn't cast
_doc: string
rows: list<item: struct<rev: string, stage: int64, step: int64, arm: string, pass1: double, pass1_ci95: li (... 221 chars omitted)
  child 0, item: struct<rev: string, stage: int64, step: int64, arm: string, pass1: double, pass1_ci95: list<item: do (... 209 chars omitted)
      child 0, rev: string
      child 1, stage: int64
      child 2, step: int64
      child 3, arm: string
      child 4, pass1: double
      child 5, pass1_ci95: list<item: double>
          child 0, item: double
      child 6, pass1_sd_boot: double
      child 7, pass1_sd_rollouts: double
      child 8, pass1_by_rollout_index: list<item: double>
          child 0, item: double
      child 9, cap_rate: double
      child 10, median_tokens: double
      child 11, gain: double
      child 12, n_problems: int64
      child 13, n_rollouts: int64
      child 14, source: string
correct: bool
output_tokens: int64
completion: string
max_tokens_used: int64
committed: bool
rollout_index: int64
hit_token_cap: bool
arm: string
steer: string
finish_reason: string
problem_key: string
label: string
to
{'problem_key': Value('string'), 'rollout_index': Value('int64'), 'arm': Value('string'), 'steer': Value('string'), 'label': Value('string'), 'committed': Value('bool'), 'correct': Value('bool'), 'hit_token_cap': Value('bool'), 'finish_reason': Value('string'), 'output_tokens': Value('int64'), 'max_tokens_used': Value('int64'), 'completion': 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 1827, 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 2378, in table_cast
                  return cast_table_to_schema(table, schema)
                File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2306, in cast_table_to_schema
                  raise CastError(
                  ...<3 lines>...
                  )
              datasets.table.CastError: Couldn't cast
              _doc: string
              rows: list<item: struct<rev: string, stage: int64, step: int64, arm: string, pass1: double, pass1_ci95: li (... 221 chars omitted)
                child 0, item: struct<rev: string, stage: int64, step: int64, arm: string, pass1: double, pass1_ci95: list<item: do (... 209 chars omitted)
                    child 0, rev: string
                    child 1, stage: int64
                    child 2, step: int64
                    child 3, arm: string
                    child 4, pass1: double
                    child 5, pass1_ci95: list<item: double>
                        child 0, item: double
                    child 6, pass1_sd_boot: double
                    child 7, pass1_sd_rollouts: double
                    child 8, pass1_by_rollout_index: list<item: double>
                        child 0, item: double
                    child 9, cap_rate: double
                    child 10, median_tokens: double
                    child 11, gain: double
                    child 12, n_problems: int64
                    child 13, n_rollouts: int64
                    child 14, source: string
              correct: bool
              output_tokens: int64
              completion: string
              max_tokens_used: int64
              committed: bool
              rollout_index: int64
              hit_token_cap: bool
              arm: string
              steer: string
              finish_reason: string
              problem_key: string
              label: string
              to
              {'problem_key': Value('string'), 'rollout_index': Value('int64'), 'arm': Value('string'), 'steer': Value('string'), 'label': Value('string'), 'committed': Value('bool'), 'correct': Value('bool'), 'hit_token_cap': Value('bool'), 'finish_reason': Value('string'), 'output_tokens': Value('int64'), 'max_tokens_used': Value('int64'), 'completion': 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 1694, 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 1880, in _prepare_split_single
                  raise DatasetGenerationError("An error occurred while generating the dataset") from e
              datasets.exceptions.DatasetGenerationError: An error occurred while generating the dataset

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problem_key
string
rollout_index
int64
arm
string
steer
string
label
string
committed
bool
correct
bool
hit_token_cap
bool
finish_reason
string
output_tokens
int64
max_tokens_used
int64
completion
string
precalculus__8ee539
0
nn_okay
base
math500
false
false
true
length
7,168
7,168
Okay, so can you have a solution to this problem? The problem is that it is not a solution to this problem, it is a solution to this problem. The solution is to use the following expression, which will give you a solution to this problem. The solution is to use the following expression. The solution is to use the f...
precalculus__8ee539
1
nn_okay
base
math500
false
false
true
length
7,168
7,168
Okay, so that's the problem. For example, if you want to use the same line of the problem as in the previous example, you can use the same line of the problem and it will be the same as the same line of the problem. For example, if you want to use the same line of the problem as in the previous example, the problem...
precalculus__8ee539
2
nn_okay
base
math500
false
false
true
length
7,168
7,168
Okay, so that it can be shown that $\theta$ is the solution of the problem. See the solution for the problem. The problem is that $\theta$ is the solution of the problem. Note that $\theta$ is the solution of the problem. Note that the solution of the problem is to find the solution of the problem. The solution ...
precalculus__8ee539
3
nn_okay
base
math500
false
false
true
length
7,168
7,168
Okay, that's why the problem is not the problem. The problem is that it's not the problem. The problem is that if $r \in \mathbb{R}^n$, then $r = 0$ and $r = 0$. The problem is that if $r = 0$, then $r = 0$ and $r = 0$. If $r = 0$, then $r = 0$. The problem is that if $r = 0$, then $r = 0$, and $r = 0$, then $r = 0$....
intermediate_algebra__f4e837
0
nn_okay
base
math500
false
false
true
length
7,168
7,168
Okay, that's a good way of explaining the solution. First of all, let's try this on its own line. Second, let's try this on its own line. Let's say $p = 1$ and $p = 1$. Let's say $p = 1$. Let's see if $p = 1$ and $p = 1$ and $p = 1$. Let's see if $p = 1$. Let's see if $p = 1$. Let's see if $p = 1$. Let's see if $p = ...
intermediate_algebra__f4e837
1
nn_okay
base
math500
false
false
true
length
7,168
7,168
Okay, so the line of the problem is the same as the line of the problem. The problem is that the line of the problem is not the same as the line of the problem. The line of the problem is the line of the problem, where the line of the problem is the line of the problem. The line of the problem is the line of the prob...
intermediate_algebra__f4e837
2
nn_okay
base
math500
false
false
true
length
7,168
7,168
Okay, so here are the lines of the problem. For example, if we have a question that is not the answer to the problem, we have a question that will be the answer to the problem. For example, if we have a question that is not the answer to the problem, it will be the answer to the problem. For example, if we have a que...
intermediate_algebra__f4e837
3
nn_okay
base
math500
false
false
true
length
7,168
7,168
"\n\nOkay, now that it is not the answer. It is not the answer to the problem that it does not know (...TRUNCATED)
algebra__96e5cb
0
nn_okay
base
math500
false
false
true
length
7,168
7,168
"\n\nOkay, so it can be more complicated than this.\nThis should be very confusing since it is not a(...TRUNCATED)
algebra__96e5cb
1
nn_okay
base
math500
false
false
true
length
7,168
7,168
"\n\nOkay, so, so, so, so, so, so, so, so, so, so, so, so, so, so, so, so, so, so, so, so, so, so, s(...TRUNCATED)
End of preview.

rollouts-olmo7b-ladder-csail

Model: allenai/Olmo-3-1025-7B intermediate checkpoints (olmo_ladder stage1-step{1000,20000,150000,500000,1000000,1413814}, stage2-step{1000,3000,7000,14000,25000,47684}); top20_stage1 = stage1-step1413814. Tokenizer: allenai/Olmo-3-1025-7B (snapshot a81bae42). Protocol: RL-Zero prompt, MATH-500 x 4, budget 7,168, T 0.6, top-p 0.95, seed 20260819; none + nn_okay per checkpoint; top20_stage1: none + the top-20 beam nominees on the pretraining-only checkpoint.

Rollouts generated on the CSAIL cluster for the reasoning-registers paper (Sophie Wang, MIT), uploaded 2026-09-13; sister repositories of the same organisation hold the cells run by Rulin Shao (see HF_MANIFEST.md there). Layout: each top-level folder is one local store with its date prefix dropped, keeping the store's own layout (rollouts_base_<arm>_p<start>.jsonl, one line per rollout with problem_key, rollout_index, arm, completion, correct, output_tokens, hit_token_cap; *_b2 = the second seeded batch; *_execgraded/ = the execution-graded copy for code). summaries/ holds the cell summaries the paper's tables read (scripts/eval/summarize_cell.py), tables/ the derived tables. Folders: ladder_rlzero, top20_stage1, tables. Files are plain JSON Lines, not compressed.

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