The full dataset viewer is not available (click to read why). Only showing a preview of the rows.
Error code: DatasetGenerationCastError
Exception: DatasetGenerationCastError
Message: An error occurred while generating the dataset
All the data files must have the same columns, but at some point there are 2 new columns ({'duration', 'start'})
This happened while the json dataset builder was generating data using
hf://datasets/robotwang/MITFLD/transcripts/-Pg11JHzUTo.json (at revision f5a5047e040ecf0f80a3cb67d64e324407f323ec)
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)
Traceback: Traceback (most recent call last):
File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/builder.py", line 1831, in _prepare_split_single
writer.write_table(table)
File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/arrow_writer.py", line 644, in write_table
pa_table = table_cast(pa_table, self._schema)
File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/table.py", line 2272, in table_cast
return cast_table_to_schema(table, schema)
File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/table.py", line 2218, in cast_table_to_schema
raise CastError(
datasets.table.CastError: Couldn't cast
text: string
start: double
duration: double
-- schema metadata --
pandas: '{"index_columns": [], "column_indexes": [], "columns": [{"name":' + 436
to
{'text': Value('int64')}
because column names don't match
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 1451, in compute_config_parquet_and_info_response
parquet_operations, partial, estimated_dataset_info = stream_convert_to_parquet(
File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 994, in stream_convert_to_parquet
builder._prepare_split(
File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/builder.py", line 1702, in _prepare_split
for job_id, done, content in self._prepare_split_single(
File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/builder.py", line 1833, 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 2 new columns ({'duration', 'start'})
This happened while the json dataset builder was generating data using
hf://datasets/robotwang/MITFLD/transcripts/-Pg11JHzUTo.json (at revision f5a5047e040ecf0f80a3cb67d64e324407f323ec)
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)Need help to make the dataset viewer work? Make sure to review how to configure the dataset viewer, and open a discussion for direct support.
text int64 |
|---|
0 |
295 |
676 |
896 |
1,341 |
1,423 |
1,525 |
1,868 |
2,017 |
2,228 |
2,373 |
2,532 |
0 |
396 |
554 |
609 |
885 |
261 |
1,042 |
2,741 |
2,851 |
2,876 |
3,605 |
0 |
48 |
126 |
281 |
559 |
900 |
932 |
1,154 |
1,910 |
2,027 |
2,263 |
2,485 |
2,968 |
15 |
899 |
1,223 |
1,325 |
1,396 |
1,503 |
1,556 |
1,993 |
1,998 |
2,472 |
3,136 |
3,835 |
3,860 |
4,449 |
4,634 |
4,805 |
4,919 |
5,013 |
5,075 |
5,193 |
43 |
60 |
124 |
140 |
276 |
1,118 |
1,579 |
1,608 |
2,049 |
2,190 |
2,464 |
2,745 |
3,143 |
3,289 |
3,391 |
3,572 |
3,787 |
4,337 |
230 |
475 |
1,089 |
3,081 |
105 |
612 |
1,323 |
1,720 |
1,986 |
2,104 |
0 |
137 |
321 |
428 |
562 |
700 |
871 |
1,075 |
15 |
2,073 |
2,429 |
2,481 |
2,779 |
2,894 |
3,052 |
3,092 |
YAML Metadata Warning:empty or missing yaml metadata in repo card
Check out the documentation for more information.
MITFLD: MIT Lecture Fragmentation Dataset
MITFLD is a lecture video fragmentation dataset introduced in Towards Key Point Identification (KPI) for Lecture Videos: Approaches and Performance Evaluation, serving as a benchmark for lecture video fragmentation methods without using synthetic videos.
It enables research in:
- Key Point Identification (KPI) in lecture videos
- Lecture fragment recommendation
- Non-linear and bite-sized learning
- Content-based indexing and search for lecture videos
Data Source Attribution
The MITFLD dataset is sourced from MIT OpenCourseWare, a free and open publication of material from thousands of MIT courses, enabling global access to high-quality educational resources.
Folder Structure
βββ frags
β βββ <video_id>.json # Ground truth fragment annotations
βββ README.md
βββ transcripts
β βββ <video_id>.json # Transcript of the lecture
βββ video_id_list.txt # List of video_ids included
βββ videos
βββ <video_id>.mp4 # Lecture video files
KPI Framework
To facilitate experiments, the dataset is designed to work seamlessly with the kpi unified Python framework for lecture video fragmentation, providing:
- Dataset abstractions
- Multiple baseline and advanced methods (e.g., BiLSTM, TW-FINCH, PSD)
- Evaluation metrics (F-score, mMoF, mIoU)
- Extensibility for your own methods
Citation
If you use this dataset or the kpi framework in your research, please cite:
@article{wang2025towards,
title={Towards Key Point Identification (KPI) for Lecture Videos: Approaches and Performance Evaluation},
author={Wang, Jiaqi and Kwok, Ricky Y-K and Ngai, Edith CH},
journal={ACM Transactions on Multimedia Computing, Communications and Applications},
year={2025},
publisher={ACM New York, NY}
}
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