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Error code: DatasetGenerationError Exception: ArrowNotImplementedError Message: Cannot write struct type '_format_kwargs' with no child field to Parquet. Consider adding a dummy child field. Traceback: Traceback (most recent call last): File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/builder.py", line 1871, in _prepare_split_single writer.write_table(table) File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/arrow_writer.py", line 641, in write_table self._build_writer(inferred_schema=pa_table.schema) File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/arrow_writer.py", line 456, in _build_writer self.pa_writer = self._WRITER_CLASS(self.stream, schema) File "/src/services/worker/.venv/lib/python3.9/site-packages/pyarrow/parquet/core.py", line 1010, in __init__ self.writer = _parquet.ParquetWriter( File "pyarrow/_parquet.pyx", line 2157, in pyarrow._parquet.ParquetWriter.__cinit__ File "pyarrow/error.pxi", line 154, in pyarrow.lib.pyarrow_internal_check_status File "pyarrow/error.pxi", line 91, in pyarrow.lib.check_status pyarrow.lib.ArrowNotImplementedError: Cannot write struct type '_format_kwargs' with no child field to Parquet. Consider adding a dummy child field. During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/builder.py", line 1887, in _prepare_split_single num_examples, num_bytes = writer.finalize() File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/arrow_writer.py", line 660, in finalize self._build_writer(self.schema) File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/arrow_writer.py", line 456, in _build_writer self.pa_writer = self._WRITER_CLASS(self.stream, schema) File "/src/services/worker/.venv/lib/python3.9/site-packages/pyarrow/parquet/core.py", line 1010, in __init__ self.writer = _parquet.ParquetWriter( File "pyarrow/_parquet.pyx", line 2157, in pyarrow._parquet.ParquetWriter.__cinit__ File "pyarrow/error.pxi", line 154, in pyarrow.lib.pyarrow_internal_check_status File "pyarrow/error.pxi", line 91, in pyarrow.lib.check_status pyarrow.lib.ArrowNotImplementedError: Cannot write struct type '_format_kwargs' with no child field to Parquet. Consider adding a dummy child field. 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 1433, 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 1050, in convert_to_parquet builder.download_and_prepare( File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/builder.py", line 925, in download_and_prepare self._download_and_prepare( File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/builder.py", line 1001, in _download_and_prepare self._prepare_split(split_generator, **prepare_split_kwargs) File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/builder.py", line 1742, 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 1898, 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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_data_files
list | _fingerprint
string | _format_columns
null | _format_kwargs
dict | _format_type
null | _output_all_columns
bool | _split
null |
---|---|---|---|---|---|---|
[
{
"filename": "data-00000-of-00001.arrow"
}
] | 15469d3f8ed66ad3 | null | {} | null | false | null |
Earnings Call Transcripts Dataset
Overview
This dataset contains a comprehensive collection of earnings call transcripts for major healthcare and pharmaceutical companies. These transcripts capture quarterly discussions between company executives and financial analysts, providing unique insights into company performance, strategic directions, and market outlooks.
These high-quality primary source materials offer valuable text data for financial sentiment analysis, market intelligence research, and various NLP applications.
Dataset Specifications
Attribute | Value |
---|---|
Total Transcripts | 761 |
Companies | 3 major healthcare/pharma corporations |
Time Period | 2007-01-25 to 2025-03-24 |
Average Transcript | ~58,229 characters |
Format | Hugging Face Dataset (Arrow) |
Language | English |
Companies Included
- UNH - UnitedHealth Group Incorporated
- LLY - Eli Lilly and Company
- NVO - Novo Nordisk A/S
Data Structure
Each record contains the following fields:
Field | Description |
---|---|
ticker |
Stock ticker symbol (e.g., "UNH") |
company_name |
Full legal company name |
companyid |
Unique company identifier |
announcedate |
Date of the earnings announcement |
headline |
Title of the earnings call (typically including quarter and year) |
keydevid |
Unique key development identifier |
transcriptid |
Unique transcript identifier |
transcript_text |
Complete transcript text including executive presentations and Q&A |
Applications
This dataset is particularly valuable for:
Financial NLP Research:
- Sentiment analysis of executive communications
- Topic modeling across earnings calls
- Named entity recognition in financial contexts
- Question-answering systems training
Financial Market Analysis:
- Extracting forward-looking statements
- Analyzing management tone and confidence
- Tracking clinical trial updates and product developments
- Studying analyst concerns through Q&A patterns
Healthcare/Pharma Intelligence:
- Monitoring competitive positioning
- Tracking industry terminology evolution
- Analyzing discussion of regulatory challenges
- Identifying emerging market trends
Usage Example
from datasets import load_from_disk
# Load the dataset
dataset = load_from_disk("earnings_transcripts_db")
# Basic info
print(f"Dataset contains {len(dataset)} transcripts")
print(f"Companies: {sorted(dataset.unique('ticker'))}")
# Sample analysis
import random
random_idx = random.randint(0, len(dataset)-1)
sample = dataset[random_idx]
print(f"Sample from {sample['company_name']} ({sample['ticker']}), {sample['announcedate']}")
print(f"Transcript length: {len(sample['transcript_text'])} chars")
print(f"First 500 chars: {sample['transcript_text'][:500]}...")
Citation
If you use this dataset in your research, please cite it as:
@dataset{earnings_transcripts_2025,
author = {Tran, Kurry},
title = {Healthcare and Pharmaceutical Earnings Call Transcripts},
year = {2025},
publisher = {Hugging Face},
howpublished = {\url{https://huggingface.co/datasets/...}}
}
License
This dataset is available for academic and research purposes. Usage for commercial applications may require additional licensing from the original content owners.
Limitations
- While extensive, this dataset covers a subset of healthcare and pharmaceutical companies.
- Some earnings calls may have missing segments or formatting irregularities.
- Multiple versions of the same transcript (preliminary, edited, etc.) may be present.
- Users should perform their own verification for critical research applications.
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