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The dataset generation failed
Error code: DatasetGenerationError
Exception: CastError
Message: Couldn't cast
metadata: struct<name: string, version: string, description: string, exported_at: string, total_problems: int6 (... 78 chars omitted)
child 0, name: string
child 1, version: string
child 2, description: string
child 3, exported_at: string
child 4, total_problems: int64
child 5, total_categories: int64
child 6, total_difficulty_levels: int64
child 7, total_sets: int64
difficulty_levels: list<item: struct<id: int64, level: int64, name: string, description: string, color_class: string>>
child 0, item: struct<id: int64, level: int64, name: string, description: string, color_class: string>
child 0, id: int64
child 1, level: int64
child 2, name: string
child 3, description: string
child 4, color_class: string
categories: list<item: struct<id: int64, name: string, display_name: string, description: string, slug: string, (... 40 chars omitted)
child 0, item: struct<id: int64, name: string, display_name: string, description: string, slug: string, order_index (... 28 chars omitted)
child 0, id: int64
child 1, name: string
child 2, display_name: string
child 3, description: string
child 4, slug: string
child 5, order_index: int64
child 6, created_at: string
sets: list<item: struct<id: int64, name: string, display_name: string, description: string, slug: string, (... 40 chars omitted)
child 0, item: struct<id: int64, name: string, display_name: string, description: string, slug: string, order_
...
child 4, background: string
child 5, difficulty_level_id: int64
child 6, status: string
child 7, proposed_by: string
child 8, proposed_year: int64
child 9, category_id: int64
child 10, set_id: int64
child 11, view_count: int64
child 12, favorite_count: int64
child 13, created_at: timestamp[s]
child 14, updated_at: timestamp[s]
child 15, published: bool
child 16, category: struct<id: int64, name: string, display_name: string, description: string, slug: string, order_index (... 28 chars omitted)
child 0, id: int64
child 1, name: string
child 2, display_name: string
child 3, description: string
child 4, slug: string
child 5, order_index: int64
child 6, created_at: string
child 17, difficulty: struct<id: int64, level: int64, name: string, description: string, color_class: string>
child 0, id: int64
child 1, level: int64
child 2, name: string
child 3, description: string
child 4, color_class: string
child 18, set: struct<id: int64, name: string, display_name: string, description: string, slug: string, order_index (... 28 chars omitted)
child 0, id: int64
child 1, name: string
child 2, display_name: string
child 3, description: string
child 4, slug: string
child 5, order_index: int64
child 6, created_at: string
to
{'id': Value('int64'), 'name': Value('string'), 'display_name': Value('string'), 'description': Value('string'), 'slug': Value('string'), 'order_index': Value('int64'), 'created_at': Value('string')}
because column names don't match
Traceback: Traceback (most recent call last):
File "/usr/local/lib/python3.12/site-packages/datasets/builder.py", line 1800, in _prepare_split_single
writer.write_table(table)
File "/usr/local/lib/python3.12/site-packages/datasets/arrow_writer.py", line 764, in write_table
self.write_rows_on_file() # in case there are buffered rows to write first
^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.12/site-packages/datasets/arrow_writer.py", line 663, in write_rows_on_file
self._write_table(table)
File "/usr/local/lib/python3.12/site-packages/datasets/arrow_writer.py", line 773, in _write_table
pa_table = table_cast(pa_table, self._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
metadata: struct<name: string, version: string, description: string, exported_at: string, total_problems: int6 (... 78 chars omitted)
child 0, name: string
child 1, version: string
child 2, description: string
child 3, exported_at: string
child 4, total_problems: int64
child 5, total_categories: int64
child 6, total_difficulty_levels: int64
child 7, total_sets: int64
difficulty_levels: list<item: struct<id: int64, level: int64, name: string, description: string, color_class: string>>
child 0, item: struct<id: int64, level: int64, name: string, description: string, color_class: string>
child 0, id: int64
child 1, level: int64
child 2, name: string
child 3, description: string
child 4, color_class: string
categories: list<item: struct<id: int64, name: string, display_name: string, description: string, slug: string, (... 40 chars omitted)
child 0, item: struct<id: int64, name: string, display_name: string, description: string, slug: string, order_index (... 28 chars omitted)
child 0, id: int64
child 1, name: string
child 2, display_name: string
child 3, description: string
child 4, slug: string
child 5, order_index: int64
child 6, created_at: string
sets: list<item: struct<id: int64, name: string, display_name: string, description: string, slug: string, (... 40 chars omitted)
child 0, item: struct<id: int64, name: string, display_name: string, description: string, slug: string, order_
...
child 4, background: string
child 5, difficulty_level_id: int64
child 6, status: string
child 7, proposed_by: string
child 8, proposed_year: int64
child 9, category_id: int64
child 10, set_id: int64
child 11, view_count: int64
child 12, favorite_count: int64
child 13, created_at: timestamp[s]
child 14, updated_at: timestamp[s]
child 15, published: bool
child 16, category: struct<id: int64, name: string, display_name: string, description: string, slug: string, order_index (... 28 chars omitted)
child 0, id: int64
child 1, name: string
child 2, display_name: string
child 3, description: string
child 4, slug: string
child 5, order_index: int64
child 6, created_at: string
child 17, difficulty: struct<id: int64, level: int64, name: string, description: string, color_class: string>
child 0, id: int64
child 1, level: int64
child 2, name: string
child 3, description: string
child 4, color_class: string
child 18, set: struct<id: int64, name: string, display_name: string, description: string, slug: string, order_index (... 28 chars omitted)
child 0, id: int64
child 1, name: string
child 2, display_name: string
child 3, description: string
child 4, slug: string
child 5, order_index: int64
child 6, created_at: string
to
{'id': Value('int64'), 'name': Value('string'), 'display_name': Value('string'), 'description': Value('string'), 'slug': Value('string'), 'order_index': Value('int64'), 'created_at': Value('string')}
because column names don't match
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/local/lib/python3.12/site-packages/datasets/builder.py", line 1802, in _prepare_split_single
raise DatasetGenerationCastError.from_cast_error(
datasets.exceptions.DatasetGenerationCastError: An error occurred while generating the dataset
All the data files must have the same columns, but at some point there are 5 new columns ({'difficulty_levels', 'problems', 'sets', 'categories', 'metadata'}) and 7 missing columns ({'created_at', 'id', 'display_name', 'description', 'slug', 'order_index', 'name'}).
This happened while the json dataset builder was generating data using
hf://datasets/ulamai/UnsolvedMath/difficulty_levels.json (at revision b95f746139ec70f9a01b9bfa3f1908131645cb37), [/tmp/hf-datasets-cache/medium/datasets/26766065908751-config-parquet-and-info-ulamai-UnsolvedMath-48447135/hub/datasets--ulamai--UnsolvedMath/snapshots/b95f746139ec70f9a01b9bfa3f1908131645cb37/categories.json (origin=hf://datasets/ulamai/UnsolvedMath@b95f746139ec70f9a01b9bfa3f1908131645cb37/categories.json), /tmp/hf-datasets-cache/medium/datasets/26766065908751-config-parquet-and-info-ulamai-UnsolvedMath-48447135/hub/datasets--ulamai--UnsolvedMath/snapshots/b95f746139ec70f9a01b9bfa3f1908131645cb37/dataset.json (origin=hf://datasets/ulamai/UnsolvedMath@b95f746139ec70f9a01b9bfa3f1908131645cb37/dataset.json), /tmp/hf-datasets-cache/medium/datasets/26766065908751-config-parquet-and-info-ulamai-UnsolvedMath-48447135/hub/datasets--ulamai--UnsolvedMath/snapshots/b95f746139ec70f9a01b9bfa3f1908131645cb37/difficulty_levels.json (origin=hf://datasets/ulamai/UnsolvedMath@b95f746139ec70f9a01b9bfa3f1908131645cb37/difficulty_levels.json), /tmp/hf-datasets-cache/medium/datasets/26766065908751-config-parquet-and-info-ulamai-UnsolvedMath-48447135/hub/datasets--ulamai--UnsolvedMath/snapshots/b95f746139ec70f9a01b9bfa3f1908131645cb37/problems.json (origin=hf://datasets/ulamai/UnsolvedMath@b95f746139ec70f9a01b9bfa3f1908131645cb37/problems.json), /tmp/hf-datasets-cache/medium/datasets/26766065908751-config-parquet-and-info-ulamai-UnsolvedMath-48447135/hub/datasets--ulamai--UnsolvedMath/snapshots/b95f746139ec70f9a01b9bfa3f1908131645cb37/sets.json (origin=hf://datasets/ulamai/UnsolvedMath@b95f746139ec70f9a01b9bfa3f1908131645cb37/sets.json), /tmp/hf-datasets-cache/medium/datasets/26766065908751-config-parquet-and-info-ulamai-UnsolvedMath-48447135/hub/datasets--ulamai--UnsolvedMath/snapshots/b95f746139ec70f9a01b9bfa3f1908131645cb37/statistics.json (origin=hf://datasets/ulamai/UnsolvedMath@b95f746139ec70f9a01b9bfa3f1908131645cb37/statistics.json)], ['hf://datasets/ulamai/UnsolvedMath@b95f746139ec70f9a01b9bfa3f1908131645cb37/categories.json', 'hf://datasets/ulamai/UnsolvedMath@b95f746139ec70f9a01b9bfa3f1908131645cb37/dataset.json', 'hf://datasets/ulamai/UnsolvedMath@b95f746139ec70f9a01b9bfa3f1908131645cb37/difficulty_levels.json', 'hf://datasets/ulamai/UnsolvedMath@b95f746139ec70f9a01b9bfa3f1908131645cb37/problems.json', 'hf://datasets/ulamai/UnsolvedMath@b95f746139ec70f9a01b9bfa3f1908131645cb37/sets.json', 'hf://datasets/ulamai/UnsolvedMath@b95f746139ec70f9a01b9bfa3f1908131645cb37/statistics.json']
Please either edit the data files to have matching columns, or separate them into different configurations (see docs at https://hf.co/docs/hub/datasets-manual-configuration#multiple-configurations)
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/local/lib/python3.12/site-packages/datasets/builder.py", line 1821, in _prepare_split_single
num_examples, num_bytes = writer.finalize()
^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.12/site-packages/datasets/arrow_writer.py", line 781, in finalize
self.write_rows_on_file()
File "/usr/local/lib/python3.12/site-packages/datasets/arrow_writer.py", line 663, in write_rows_on_file
self._write_table(table)
File "/usr/local/lib/python3.12/site-packages/datasets/arrow_writer.py", line 773, in _write_table
pa_table = table_cast(pa_table, self._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
metadata: struct<name: string, version: string, description: string, exported_at: string, total_problems: int6 (... 78 chars omitted)
child 0, name: string
child 1, version: string
child 2, description: string
child 3, exported_at: string
child 4, total_problems: int64
child 5, total_categories: int64
child 6, total_difficulty_levels: int64
child 7, total_sets: int64
difficulty_levels: list<item: struct<id: int64, level: int64, name: string, description: string, color_class: string>>
child 0, item: struct<id: int64, level: int64, name: string, description: string, color_class: string>
child 0, id: int64
child 1, level: int64
child 2, name: string
child 3, description: string
child 4, color_class: string
categories: list<item: struct<id: int64, name: string, display_name: string, description: string, slug: string, (... 40 chars omitted)
child 0, item: struct<id: int64, name: string, display_name: string, description: string, slug: string, order_index (... 28 chars omitted)
child 0, id: int64
child 1, name: string
child 2, display_name: string
child 3, description: string
child 4, slug: string
child 5, order_index: int64
child 6, created_at: string
sets: list<item: struct<id: int64, name: string, display_name: string, description: string, slug: string, (... 40 chars omitted)
child 0, item: struct<id: int64, name: string, display_name: string, description: string, slug: string, order_
...
child 4, background: string
child 5, difficulty_level_id: int64
child 6, status: string
child 7, proposed_by: string
child 8, proposed_year: int64
child 9, category_id: int64
child 10, set_id: int64
child 11, view_count: int64
child 12, favorite_count: int64
child 13, created_at: timestamp[s]
child 14, updated_at: timestamp[s]
child 15, published: bool
child 16, category: struct<id: int64, name: string, display_name: string, description: string, slug: string, order_index (... 28 chars omitted)
child 0, id: int64
child 1, name: string
child 2, display_name: string
child 3, description: string
child 4, slug: string
child 5, order_index: int64
child 6, created_at: string
child 17, difficulty: struct<id: int64, level: int64, name: string, description: string, color_class: string>
child 0, id: int64
child 1, level: int64
child 2, name: string
child 3, description: string
child 4, color_class: string
child 18, set: struct<id: int64, name: string, display_name: string, description: string, slug: string, order_index (... 28 chars omitted)
child 0, id: int64
child 1, name: string
child 2, display_name: string
child 3, description: string
child 4, slug: string
child 5, order_index: int64
child 6, created_at: string
to
{'id': Value('int64'), 'name': Value('string'), 'display_name': Value('string'), 'description': Value('string'), 'slug': Value('string'), 'order_index': Value('int64'), 'created_at': 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 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.
id int64 | name string | display_name string | description string | slug string | order_index int64 | created_at string |
|---|---|---|---|---|---|---|
1 | number_theory | Number Theory | Properties of integers, prime numbers, Diophantine equations. | number-theory | 1 | 2026-05-13T14:45:21.186Z |
2 | combinatorics | Combinatorics | Counting problems, graph theory, discrete structures. | combinatorics | 2 | 2026-05-13T14:45:21.187Z |
3 | graph_theory | Graph Theory | Problems involving graphs, networks, and their properties. | graph-theory | 3 | 2026-05-13T14:45:21.187Z |
4 | algebra | Algebra | Group theory, ring theory, field theory, and algebraic structures. | algebra | 4 | 2026-05-13T14:45:21.187Z |
5 | algebraic_geometry | Algebraic Geometry | Geometric objects defined by polynomial equations. | algebraic-geometry | 5 | 2026-05-13T14:45:21.187Z |
6 | geometry | Geometry | Euclidean and non-Euclidean geometry, geometric structures. | geometry | 6 | 2026-05-13T14:45:21.187Z |
7 | topology | Topology | Properties preserved under continuous deformations. | topology | 7 | 2026-05-13T14:45:21.187Z |
8 | analysis | Analysis | Limits, continuity, calculus, and function theory. | analysis | 8 | 2026-05-13T14:45:21.187Z |
9 | pde | Partial Differential Equations | PDEs and their applications in physics and geometry. | pde | 9 | 2026-05-13T14:45:21.187Z |
10 | set_theory | Set Theory | Foundations of mathematics, infinite sets, and cardinality. | set-theory | 10 | 2026-05-13T14:45:21.187Z |
11 | dynamical_systems | Dynamical Systems | Problems about long-term behavior of deterministic systems, Hamiltonian dynamics, and periodic orbits. | dynamical-systems | 11 | 2026-05-13T14:45:21.187Z |
15 | computer_science | Computer Science | Computational complexity, algorithms, and theoretical CS. | computer-science | 15 | 2026-05-13T14:45:21.187Z |
16 | physics | Mathematical Physics | Problems at the intersection of mathematics and physics. | physics | 16 | 2026-05-13T14:45:21.187Z |
17 | group_theory | Group Theory | Problems about groups, group actions, representations, and related algebraic structures. | group-theory | 17 | 2026-05-13T14:45:21.187Z |
18 | logic | Logic | Problems in mathematical logic, model theory, proof theory, and finite model theory. | logic | 18 | 2026-05-13T14:45:21.187Z |
19 | probability | Probability | Problems involving probability theory, stochastic processes, and random structures. | probability | 19 | 2026-05-13T14:45:21.187Z |
20 | miscellaneous | Miscellaneous | Problems whose source classification does not fit the main mathematical categories. | miscellaneous | 20 | 2026-05-13T14:45:21.187Z |
null | null | null | null | null | null | null |
1 | L1: Tractable | null | Problems that may be within reach with current techniques. Reserved for future additions. | null | null | null |
2 | L2: Intermediate | null | Challenging problems requiring solid mathematical background. Reserved for future additions. | null | null | null |
3 | L3: Advanced | null | Difficult problems requiring specialized knowledge and sophisticated techniques. | null | null | null |
4 | L4: Expert | null | Very challenging problems at the frontier of mathematical research. | null | null | null |
5 | L5: Millennium Prize | null | Millennium Prize Problems and problems of equivalent difficulty. | null | null | null |
1 | null | null | null | null | null | 2024-01-01T00:00:00 |
2 | null | null | null | null | null | 2024-01-01T00:00:00 |
3 | null | null | null | null | null | 2024-01-01T00:00:00 |
4 | null | null | null | null | null | 2024-01-01T00:00:00 |
5 | null | null | null | null | null | 2024-01-01T00:00:00 |
6 | null | null | null | null | null | 2024-01-01T00:00:00 |
8 | null | null | null | null | null | 2024-01-01T00:00:00 |
9 | null | null | null | null | null | 2024-01-01T00:00:00 |
11 | null | null | null | null | null | 2024-01-01T00:00:00 |
12 | null | null | null | null | null | 2024-01-01T00:00:00 |
13 | null | null | null | null | null | 2024-01-01T00:00:00 |
10 | null | null | null | null | null | 2024-01-01T00:00:00 |
14 | null | null | null | null | null | 2024-01-01T00:00:00 |
15 | null | null | null | null | null | 2024-01-01T00:00:00 |
18 | null | null | null | null | null | 2024-01-01T00:00:00 |
19 | null | null | null | null | null | 2024-01-01T00:00:00 |
20 | null | null | null | null | null | 2024-01-01T00:00:00 |
21 | null | null | null | null | null | 2024-01-01T00:00:00 |
22 | null | null | null | null | null | 2024-01-01T00:00:00 |
25 | null | null | null | null | null | 2024-01-01T00:00:00 |
26 | null | null | null | null | null | 2024-01-01T00:00:00 |
27 | null | null | null | null | null | 2024-01-01T00:00:00 |
28 | null | null | null | null | null | 2024-01-01T00:00:00 |
29 | null | null | null | null | null | 2024-01-01T00:00:00 |
30 | null | null | null | null | null | 2024-01-01T00:00:00 |
31 | null | null | null | null | null | 2024-01-01T00:00:00 |
32 | null | null | null | null | null | 2024-01-01T00:00:00 |
33 | null | null | null | null | null | 2024-01-01T00:00:00 |
34 | null | null | null | null | null | 2024-01-01T00:00:00 |
36 | null | null | null | null | null | 2024-01-01T00:00:00 |
37 | null | null | null | null | null | 2024-01-01T00:00:00 |
38 | null | null | null | null | null | 2024-01-01T00:00:00 |
40 | null | null | null | null | null | 2024-01-01T00:00:00 |
41 | null | null | null | null | null | 2024-01-01T00:00:00 |
42 | null | null | null | null | null | 2024-01-01T00:00:00 |
43 | null | null | null | null | null | 2024-01-01T00:00:00 |
44 | null | null | null | null | null | 2024-01-01T00:00:00 |
45 | null | null | null | null | null | 2024-01-01T00:00:00 |
46 | null | null | null | null | null | 2024-01-01T00:00:00 |
47 | null | null | null | null | null | 2024-01-01T00:00:00 |
48 | null | null | null | null | null | 2024-01-01T00:00:00 |
49 | null | null | null | null | null | 2024-01-01T00:00:00 |
50 | null | null | null | null | null | 2024-01-01T00:00:00 |
51 | null | null | null | null | null | 2024-01-01T00:00:00 |
52 | null | null | null | null | null | 2024-01-01T00:00:00 |
53 | null | null | null | null | null | 2024-01-01T00:00:00 |
54 | null | null | null | null | null | 2024-01-01T00:00:00 |
55 | null | null | null | null | null | 2024-01-01T00:00:00 |
56 | null | null | null | null | null | 2024-01-01T00:00:00 |
57 | null | null | null | null | null | 2024-01-01T00:00:00 |
59 | null | null | null | null | null | 2024-01-01T00:00:00 |
60 | null | null | null | null | null | 2024-01-01T00:00:00 |
61 | null | null | null | null | null | 2024-01-01T00:00:00 |
62 | null | null | null | null | null | 2024-01-01T00:00:00 |
64 | null | null | null | null | null | 2024-01-01T00:00:00 |
66 | null | null | null | null | null | 2024-01-01T00:00:00 |
68 | null | null | null | null | null | 2024-01-01T00:00:00 |
69 | null | null | null | null | null | 2024-01-01T00:00:00 |
70 | null | null | null | null | null | 2024-01-01T00:00:00 |
71 | null | null | null | null | null | 2024-01-01T00:00:00 |
72 | null | null | null | null | null | 2024-01-01T00:00:00 |
74 | null | null | null | null | null | 2024-01-01T00:00:00 |
75 | null | null | null | null | null | 2024-01-01T00:00:00 |
76 | null | null | null | null | null | 2024-01-01T00:00:00 |
77 | null | null | null | null | null | 2024-01-01T00:00:00 |
78 | null | null | null | null | null | 2024-01-01T00:00:00 |
79 | null | null | null | null | null | 2024-01-01T00:00:00 |
80 | null | null | null | null | null | 2024-01-01T00:00:00 |
81 | null | null | null | null | null | 2024-01-01T00:00:00 |
82 | null | null | null | null | null | 2024-01-01T00:00:00 |
83 | null | null | null | null | null | 2024-01-01T00:00:00 |
84 | null | null | null | null | null | 2024-01-01T00:00:00 |
85 | null | null | null | null | null | 2024-01-01T00:00:00 |
86 | null | null | null | null | null | 2024-01-01T00:00:00 |
87 | null | null | null | null | null | 2024-01-01T00:00:00 |
88 | null | null | null | null | null | 2024-01-01T00:00:00 |
89 | null | null | null | null | null | 2024-01-01T00:00:00 |
End of preview.