# Third-Party Notices

DraftSOS uses concepts and methodologies adapted from the following open-source projects.
All code in DraftSOS is original unless otherwise noted.

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## pcorliss/ff_playoff_odds

- **License:** Apache License 2.0
- **URL:** https://github.com/pcorliss/ff_playoff_odds
- **Usage:** Playoff probability enumeration algorithm adapted for client-side JavaScript.
- **Changes:** Rewritten from Ruby to vanilla JavaScript. Integrated with DraftSOS SOS data schema. Original combinatorial approach preserved.

Copyright 2023 Phil Corliss. Licensed under the Apache License, Version 2.0.

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## cbratkovics/fantasy-football-ai

- **License:** MIT License
- **URL:** https://github.com/cbratkovics/fantasy-football-ai
- **Usage:** Accuracy measurement methodology (MAE, hit rate, tier accuracy metrics).

Copyright cbratkovics. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files.

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## joewlos/fantasy_football_monte_carlo_draft_simulator

- **License:** MIT License
- **URL:** https://github.com/joewlos/fantasy_football_monte_carlo_draft_simulator
- **Usage:** Injury probability coefficients adapted for position/age lookup table.

Copyright joewlos. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files.

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## nfl_data_py

- **License:** MIT License
- **URL:** https://github.com/cooperdff/nfl_data_py
- **Usage:** NFL play-by-play and schedule data sourced via this library in the data pipeline.

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## FiveThirtyEight NFL Elo Methodology

- **License:** Public methodology documentation (no code used)
- **URL:** https://fivethirtyeight.com/methodology/how-our-nfl-predictions-work/
- **Usage:** Elo rating algorithm parameters (K-factor, home advantage, margin-of-victory multiplier) derived from publicly documented methodology. All code is a clean-room implementation — zero code from any FiveThirtyEight repository.