trueskill-tt/CHANGELOG.md

Changelog

All notable changes to this project will be documented in this file.

0.1.2 - 2026-06-12

Bug Fixes

• fix: release generated CHANGELOG at the wrong location
• fix(gaussian): treat non-positive precision as improper in mu()/sigma()

Documentation

• docs: spec for post-T4-MarginFactor tech debt cleanup
• docs: implementation plan for post-T4-MarginFactor tech debt cleanup
• docs: fix stale numerics in t4-margin-factor plan
• docs: spec for game-local Damped EP
• docs: implementation plan for game-local Damped EP
• docs: spec for History → TimeSlice ConvergenceOptions plumbing
• docs: implementation plan for History → TimeSlice plumbing
• docs: spec for per-event score_sigma override
• docs: implementation plan for per-event score_sigma override

Features

• feat(gaussian): add damp_natural helper for EP damping
• feat(convergence): add ConvergenceOptions::alpha damping field
• feat(factor): add TruncFactor::propagate_with_alpha for EP damping
• feat(factor): add MarginFactor::propagate_with_alpha for EP damping
• feat(game): plumb ConvergenceOptions through to run_chain
• feat(time_slice): inference callsites read self.convergence
• feat(outcome): per-event score_sigma override on Outcome::Scored
• feat(event_builder): expose scores_with_sigma fluent method

Refactor

• refactor: dedupe Game::likelihoods and likelihoods_scored via run_chain
• refactor: make BuiltinFactor::log_evidence match exhaustive
• refactor(time_slice): add convergence field, rename iterate_to_convergence

Testing

• test(game): integration tests for ConvergenceOptions behavior
• test(history): end-to-end ConvergenceOptions propagation tests
• test(history): end-to-end per-event score_sigma override tests

0.1.1 - 2026-04-27

Miscellaneous Tasks

• chore: Release trueskill-tt version 0.1.1

Other (unconventional)

• T0 + T1 + T2: engine redesign through new API surface (#1)
• T3: rayon-backed concurrency (opt-in) (#2)
• T4 (MarginFactor): scored outcomes via Gaussian-margin EP evidence

0.1.0 - 2026-04-23

Features

• feat: added a Drift trait and a "default" ConstantDrift implementation

Miscellaneous Tasks

• chore: added cliff.toml, release.toml and rustfmt.toml
• chore: clean up
• chore: make cargo release add CHANGELOG.md before commit
• chore: do not publish

Other (unconventional)

• Initial commit.
• Begin working on batch.
• Passing tests for Batch
• Working on History struct. First test is passing.
• More test passing for History
• Added more functions to History
• Remove Display impl, better to use Debug
• Use flatten instead of flat_map
• Handle case where there is no time
• It works, or so it seems
• Use PlayerIndex instead of String
• Inline a lot of functions
• Refactor some code
• Refactor some stuff
• Port from julia version instead
• More things, better things, awesome
• More tests, more code
• More things, more tests
• Fix tests
• More tests
• More tests
• Added builder for History, and start migrating test to use builder instead.
• Update test to use builder
• Remove unused code
• Use and Index struct instead of str and String for player id
• Update example so now it works, and thats, well, good
• Update test to use assert_ulps_eq
• Fixed test
• Change time to use i64 instead of u64
• Small change
• Clean up example
• Update crates and added methods to get a key or all keys in an IndexMap
• Added a get function to IndexMap
• Agents doens't have to be behind a mutable reference in within_prior
• Agents doens't have to be behind a mutable reference in within_priors
• Refactor so we can see if there is any way to improve the performance
• Fix clippy warning
• More refactoring
• Remove warnings and refactor some code
• Added benchmark for Batch
• Added default implementation for TeamMessage
• Remove unused mut reference
• Make it more rusty
• More rustifying
• Small refactor
• Rename d to diff, and t to team
• Added more links to readme
• Fix broken link in README
• Update crates
• Clean up
• Dry my eyes
• Remove unnecessary allocations
• Fix clippy warning
• Refactor history
• Rename variables
• Move stuff around
• Added quality function
• Make quality a free standing function instead
• Improve performance
• Change assert to debug_assert
• Added todo to readme, and documentation for quality function
• Basic test for quality
• Ignore temp folder
• Update edition
• Small changes for new 2024 edition
• remove notepad
• added benchmark

Styling

• style: cargo fmt