Update arvix.py

Refactor data extraction functions: rename extract_pmc_data to extract_sd_data, add extract_phys_data, and update file handling for new data sources

Update arvix.py

Update pmc.py

Add count of category and PMC IDs to data output in extract_arxiv_data and extract_pmc_data functions

Add error handling for datafile download and upload in extract_arxiv_data function

Refactor imports and consolidate utility functions into utils.py; remove tools.py

Update pmc.py

Update arvix.py

Update app.py

Update app.py

Update README.md

Create LICENSE

Update arvix.py

Update pmc.py

Update arvix.py

Update pmc.py

Update fetch_data.py

Update arvix.py

Update pmc.py

Update arvix.py

Update arvix.py

Update pmc.py

Update arvix.py

Update arvix.py

Update arvix.py

Initialize data structure in fetch_data function and update main execution with user access key

Update fetch_data.py

Update fetch_data.py

Refactor ID extraction logic in arvix and improve DOI fetching in pmc

Update title casing in app and optimize ID extraction logic in arvix

Refactor data extraction logic to improve category handling and streamline data sanitization

Add initial project structure with core functionality and dependencies

initial commit