Anders Olsson
8b53cacd64
Adds soft Gaussian-observation evidence on the per-pair diff variable,
enabling continuous score margins as a richer alternative to ranks.
Public API:
- `Outcome::Scored([scores])` (non-breaking enum extension under
`#[non_exhaustive]`).
- `Game::scored(teams, outcome, options)` constructor parallel to
`Game::ranked`.
- `EventBuilder::scores([...])` fluent helper.
- `HistoryBuilder::score_sigma(σ)` knob (default 1.0, validated > 0).
- `GameOptions::score_sigma`.
- `EventKind` re-exported from `lib.rs` (annotated `#[non_exhaustive]`).
- New `InferenceError::InvalidParameter { name, value }` variant.
Internals:
- `MarginFactor` (`factor/margin.rs`): Gaussian observation factor that
closes in one EP step; cavity-cached log-evidence mirrors `TruncFactor`.
- `BuiltinFactor::Margin` dispatch arm.
- `DiffFactor` enum in `game.rs` lets `Game::likelihoods` and the new
`likelihoods_scored` share the per-pair link abstraction.
- Per-event `EventKind { Ranked, Scored { score_sigma } }` routed through
`TimeSlice::add_events`, `iteration_direct`, and `log_evidence`.
Tests: 88 lib + 27 integration (4 new in `tests/scored.rs`); existing
goldens byte-identical. Bench: `benches/scored.rs` baseline ~960µs for
60 events × 20-player pool with default convergence.
Plan: docs/superpowers/plans/2026-04-27-t4-margin-factor.md
Spec item marked Done.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
49 lines
823 B
TOML
49 lines
823 B
TOML
[package]
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name = "trueskill-tt"
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version = "0.1.0"
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edition = "2024"
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[lib]
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bench = false
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[[bench]]
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name = "batch"
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harness = false
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[[bench]]
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name = "gaussian"
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harness = false
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[[bench]]
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name = "history_converge"
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harness = false
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[[bench]]
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name = "scored"
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harness = false
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[dependencies]
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approx = { version = "0.5.1", optional = true }
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rayon = { version = "1", optional = true }
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smallvec = "1"
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[features]
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approx = ["dep:approx"]
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rayon = ["dep:rayon"]
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[dev-dependencies]
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criterion = "0.5"
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plotters = { version = "0.3", default-features = false, features = ["svg_backend", "all_elements", "all_series"] }
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plotters-backend = "0.3"
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time = { version = "0.3", features = ["parsing"] }
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trueskill-tt = { path = ".", features = ["approx"] }
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[profile.release]
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debug = true
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[profile.bench]
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debug = true
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[profile.dev]
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debug = true
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