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The dataset generation failed
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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[ { "filename": "data-00000-of-00001.arrow" } ]
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YAML Metadata Warning: empty or missing yaml metadata in repo card (https://huggingface.co/docs/hub/datasets-cards)

Earnings Call Transcripts Dataset

Version Transcripts Companies Time Period

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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