feat: configurable scoring hyperparameters (Task 013) by reh3376 · Pull Request #10 · reh3376/mdemg

reh3376 · 2026-01-16T23:21:53Z

Summary

Exposes the 7 scoring hyperparameters as configurable environment variables, enabling tuning without code changes.

Changes:

Add ScoringConfig struct to internal/config/config.go with validation
Update ScoreAndRank() to accept config instead of hardcoded values
Update service.go to pass scoring config through the retrieval pipeline
Document new env vars in CLAUDE.md

New Environment Variables

Variable	Default	Description
`SCORING_WEIGHT_VECTOR`	0.55	Vector similarity weight (α)
`SCORING_WEIGHT_ACTIVATION`	0.30	Activation score weight (β)
`SCORING_WEIGHT_RECENCY`	0.10	Recency weight (γ)
`SCORING_WEIGHT_CONFIDENCE`	0.05	Confidence weight (δ)
`SCORING_PENALTY_HUB`	0.08	Hub penalty (φ)
`SCORING_PENALTY_REDUNDANCY`	0.12	Redundancy penalty (κ)
`SCORING_RECENCY_DECAY`	0.05	Recency decay rate per day (ρ)

Scoring Formula

S = α*V + β*A + γ*R + δ*C - φ*log(1+deg) - κ*d

Test Plan

Unit tests verify default values preserve existing behavior
Config validation catches invalid values at startup
Defaults match previous hardcoded values (no regression)

🤖 Generated with Claude Code

Summary by CodeRabbit

New Features
- Added seven configurable scoring coefficients via environment variables: SCORING_ALPHA, SCORING_BETA, SCORING_GAMMA, SCORING_DELTA, SCORING_PHI, SCORING_KAPPA, SCORING_RHO
Improvements
- Scoring and ranking now read these configuration values at runtime with validation
- Documentation updated to list the new environment variables and defaults

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…fig struct Add scoring hyperparameter fields for configurable retrieval ranking: - ScoringAlpha: Vector similarity weight (default: 0.55) - ScoringBeta: Activation weight (default: 0.30) - ScoringGamma: Recency weight (default: 0.10) - ScoringDelta: Confidence weight (default: 0.05) - ScoringPhi: Hub penalty coefficient (default: 0.08) - ScoringKappa: Redundancy penalty coefficient (default: 0.12) - ScoringRho: Recency decay rate per day (default: 0.05) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

…ng hyperparameters - Parse SCORING_ALPHA (default: 0.55) - vector similarity weight - Parse SCORING_BETA (default: 0.30) - activation weight - Parse SCORING_GAMMA (default: 0.10) - recency weight - Parse SCORING_DELTA (default: 0.05) - confidence weight - Parse SCORING_PHI (default: 0.08) - hub penalty coefficient - Parse SCORING_KAPPA (default: 0.12) - redundancy penalty coefficient - Parse SCORING_RHO (default: 0.05) - recency decay rate per day All values validated to be >= 0 with proper error handling. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Update validation for scoring weight parameters (alpha, beta, gamma, delta) to enforce range [0, 1] instead of just >= 0. Penalty coefficients (phi, kappa) and decay rate (rho) remain validated as >= 0 since they don't have a natural upper bound. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

…accept config - Add import for mdemg/internal/config package - Update ScoreAndRank signature to accept cfg config.Config parameter - Replace hardcoded hyperparameters with config values (cfg.ScoringAlpha, etc.) - Update comment to indicate values come from config Note: service.go will be updated in subtask-2-2 to pass s.cfg to ScoreAndRank Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

…ndRank

…E.md Added documentation for 7 scoring hyperparameters to the Environment Variables table: - SCORING_ALPHA (0.55) - Vector similarity weight - SCORING_BETA (0.30) - Activation weight - SCORING_GAMMA (0.10) - Recency weight - SCORING_DELTA (0.05) - Confidence weight - SCORING_PHI (0.08) - Hub penalty coefficient - SCORING_KAPPA (0.12) - Redundancy penalty coefficient - SCORING_RHO (0.05) - Recency decay rate per day Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

… behavior Verification Results: - internal/retrieval: PASS (all scoring-related tests pass) - internal/api: PASS - internal/learning: PASS - internal/anomaly: PASS Note: Pre-existing failure in internal/embeddings/cache_test.go (TestCachedEmbedder/cache_eviction_behavior_with_CachedEmbedder) confirmed to exist on main branch - unrelated to scoring changes. All tests in packages modified by this task pass. Configurable scoring hyperparameters with defaults preserve behavior. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

coderabbitai · 2026-01-16T23:21:59Z

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Review failed

The pull request is closed.

📝 Walkthrough

Walkthrough

Adds seven configurable scoring hyperparameters to config and threads them into the retrieval scoring pipeline by replacing hardcoded constants with values read from environment variables (SCORING_*), plus settings and docs updates.

Changes

Cohort / File(s)	Summary
Status & Metadata `\.auto-claude-status`	Updated spec (007→019-013), phase (Core Reflection Algorithm→Verification), state (building→complete), subtasks (completed 3→8; total 11→8; in_progress 1→0), session (4→8), and timestamps.
Environment / Permissions `\.claude_settings.json`	Enabled sandbox, switched default permission mode to `acceptEdits`, replaced prior user-specific path permissions with `.auto-claude/worktrees/tasks/019-013-configurable-scoring`-focused permissions and retained broader `.auto-claude` access.
Documentation `CLAUDE.md`	Added environment variable entries for new scoring coefficients: `SCORING_ALPHA`, `SCORING_BETA`, `SCORING_GAMMA`, `SCORING_DELTA`, `SCORING_PHI`, `SCORING_KAPPA`, `SCORING_RHO` with defaults.
Config Infrastructure `mdemg_build/service/internal/config/config.go`	Added seven float64 fields to `Config` (ScoringAlpha, ScoringBeta, ScoringGamma, ScoringDelta, ScoringPhi, ScoringKappa, ScoringRho); extended `FromEnv()` to parse and validate `SCORING_*` env vars (Alpha/Beta/Gamma/Delta ∈ [0,1]; Phi/Kappa/Rho ≥ 0).
Scoring & Retrieval Logic `mdemg_build/service/internal/retrieval/scoring.go`, `mdemg_build/service/internal/retrieval/service.go`	`ScoreAndRank` signature updated to accept `cfg config.Config`; hardcoded scoring constants replaced with values from `cfg`; caller in `service.go` updated to pass `s.cfg`.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Poem

🐇 I hopped through code tonight, so merry and spry,
Seven soft weights tucked under my eye.
Alpha to Rho, a configurable tune,
I nibble defaults beneath the moon. ✨

Note

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- Update status: 14 PRs merged (#1-12) - Add PRs 9-12 to task table (Tasks 012-015) - Document new features: - Request Logging Middleware (PR #9) - Configurable Scoring Hyperparameters (PR #10) - Memory Stats Endpoint (PR #11) - Memory Archive/Delete Endpoints (PR #12) - Add new environment variables (SCORING_*, LOG_*) - Update Key Files Reference with new files - Mark Tasks 016, 017 as in-progress Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

rhenley1958 and others added 7 commits January 16, 2026 18:00

auto-claude: subtask-2-2 - Update service.go to pass config to ScoreA…

389229c

…ndRank

Merge origin/main into auto-claude/019-013-configurable-scoring

f21123d

reh3376 merged commit ddc28d4 into main Jan 16, 2026
1 check was pending

reh3376 deleted the auto-claude/019-013-configurable-scoring branch January 28, 2026 01:03

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feat: configurable scoring hyperparameters (Task 013)#10

feat: configurable scoring hyperparameters (Task 013)#10
reh3376 merged 8 commits into
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auto-claude/019-013-configurable-scoring

reh3376 commented Jan 16, 2026 •

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reh3376 commented Jan 16, 2026 • edited by coderabbitai Bot Loading Uh oh! There was an error while loading. Please reload this page.

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Summary

New Environment Variables

Scoring Formula

Test Plan

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reh3376 commented Jan 16, 2026 •

edited by coderabbitai Bot

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