8 Commits

Author SHA1 Message Date
4a8ffa12fc Add final handoff summary for complete project 2026-02-26 11:03:43 -05:00
4d96b93aa0 Add complete project summary and handoff checklist 2026-02-26 11:03:13 -05:00
8bb9e1c96c Add .gitignore for LaTeX artifacts 2026-02-26 11:02:38 -05:00
4e8c9f53bf Add comprehensive LaTeX documentation for rating system v2.0
DOCUMENTATION ADDED:

1. docs/rating-system-v2.tex (681 lines, ~9,000 words)
   - Complete technical report on system redesign
   - Includes: introduction, mathematical foundation, v1 review
   - Motivation for all 4 changes with detailed explanations
   - Complete v2.0 formulas with clear notation
   - Worked example: concrete doubles match (v1 vs v2)
   - Discussion of advantages, edge cases, future work
   - Professional typesetting for blog/website publication
   - 36 subsections with table of contents

2. docs/README.md
   - How to compile the LaTeX document
   - File overview and contents summary
   - Compilation instructions for macOS, Linux, Docker, Overleaf
   - Publishing guidance (HTML conversion, blog extraction)
   - Citation format for references

3. docs/FORMULAS.md
   - Quick reference card for all formulas
   - Match outcome calculation (singles & doubles)
   - Effective opponent examples
   - RD distribution formula with worked examples
   - Expected point win probability table
   - Parameter meanings and initial values
   - Summary of v1 vs v2 changes
   - FAQ section

STATUS: Ready for publication 
- LaTeX file is syntactically correct
- All formulas verified against code
- Example calculations match implementation
- Suitable for recreational audience + technical rigor
- Can be compiled to PDF or converted to HTML/blog format
2026-02-26 11:02:35 -05:00
f8211e924e Add completion summary for ELO refactoring work 2026-02-26 11:00:31 -05:00
9ae1bd37fd Refactor: Implement all four ELO system improvements
CHANGES:

1. Replace arbitrary margin bonus with per-point expected value
   - Replace tanh formula in score_weight.rs
   - New: performance = actual_points / total_points
   - Expected: P(point) = 1 / (1 + 10^((R_opp - R_self)/400))
   - Outcome now reflects actual performance vs expected

2. Fix RD-based distribution (backwards logic)
   - Changed weight from 1.0/rd² to rd²
   - Higher RD (uncertain) now gets more change
   - Lower RD (certain) gets less change
   - Follows correct Glicko-2 principle

3. Add new effective opponent calculation for doubles
   - New functions: calculate_effective_opponent_rating()
   - Formula: Eff_Opp = Opp1 + Opp2 - Teammate
   - Personalizes rating change by partner strength
   - Strong teammate → lower effective opponent
   - Weak teammate → higher effective opponent

4. Document unified rating consolidation (Phase 1)
   - Added REFACTORING_NOTES.md with full plan
   - Schema changes identified but deferred
   - Code is ready for single rating migration

All changes:
- Compile successfully (release build)
- Pass all 14 unit tests
- Backwards compatible with demo/example code updated
- Database backup available at pickleball.db.backup-20260226-105326
2026-02-26 10:58:10 -05:00
d4c0bb889b docs: comprehensive documentation for all modules and handlers
- README.md: full project docs with features, API endpoints, Glicko-2 explanation
- main.rs: doc comments for all 18 HTTP handlers
- db/mod.rs: schema and migration documentation
- models/mod.rs: Player struct and Glicko-2 parameter docs
- Fixed route syntax (:id instead of {id}) for Axum 0.7 compatibility
2026-02-07 19:19:50 -05:00
ada961f35d Initial commit: Pickleball ELO Tracker with Glicko-2 2026-02-07 18:45:31 -05:00