/**
 * ContextRank Phase 0 (ADR-048 섹션 6.1~6.3 + 7) — 56f batch PageRank + MemoryRank 합성 (shadow).
 *
 * memory_edges 4종 + 56e per-memory 신호 → fused graph PPR(struct_rank) + MemoryRank 합성 +
 * RetentionScore/PruneScore/DecisionGate를 memories 컬럼에 기록 (액션 0 — 삭제/병합/rerank 없음):
 *   - fused w(i→j) = α·sim + β·cooc + γ·ref + δ·temp (섹션 6.1, A2A 조정 .35/.30/.25/.10 — 섹션 11)
 *   - cooc PPMI 정규화(raw count → PPMI → [0,1]) / temp max-norm / sim cosine 그대로 / ref DF 필터 weight
 *   - teleport prior ∝ quality^a · tierPrior (reliability=1 중립, a=1) + c=.15 sparse power iteration (섹션 6.2)
 *   - MemoryRank = w1·struct + w2·ref_local + w3·cooc_local + w4·uniqueness + w5·activation
 *                + w6·reliability − w7·dup − w8·dump − w9·generic (섹션 6.3, w6=0)
 *   - ref_local/cooc_local/coldstart는 edges/created_at 즉석 파생 (신호 컬럼 없음 — 56e 결정)
 *   - RetentionScore(r1~r6 균등)/PruneScore(p1~p5 균등) + Hard Rules + DecisionGate (섹션 7, 보수적 시작)
 *
 * tierPrior/importancePrior/θ_cold는 ADR Open Q6/Q7 "구현 착수 시 결정" — 본 파일 상수가 결정값 (섹션 0.9 기록).
 */
import type { MemoryDatabase } from '../db/database.js';
/** 엣지 융합 가중 (ADR 섹션 11 A2A 초기 조정 — cooc/ref 희소로 α 임시 상향. 원본 .15/.35/.40/.10). */
export declare const FUSE_WEIGHTS: {
    readonly sim: 0.35;
    readonly cooc: 0.3;
    readonly ref: 0.25;
    readonly temp: 0.1;
};
/** PPR restart 확률 (ADR 섹션 6.2 c≈0.15). */
export declare const PPR_RESTART = 0.15;
/** power iteration 수렴 기준 (L1) + 최대 반복. */
export declare const PPR_EPSILON = 1e-9;
export declare const PPR_MAX_ITERS = 100;
/** MemoryRank 합성 가중 (ADR 섹션 6.3 — w6=0 재분배, reliability 활성화 후 원복). */
export declare const MEMORYRANK_WEIGHTS: {
    readonly w1_struct: 0.3;
    readonly w2_refLocal: 0.11;
    readonly w3_coocLocal: 0.09;
    readonly w4_uniqueness: 0.16;
    readonly w5_activation: 0.14;
    readonly w6_reliability: 0;
    readonly w7_dup: 0.08;
    readonly w8_dump: 0.06;
    readonly w9_generic: 0.06;
};
/** cold-start 시간 상수 (ADR 섹션 11 τ_cold=21d) + 삭제 금지 임계 θ_cold (Open Q7 — 본 결정: 0.5 ≈ age 14.6d). */
export declare const COLDSTART_TAU_DAYS = 21;
export declare const COLDSTART_THETA = 0.5;
/** teleport tier prior (ADR Open Q6 — 본 결정: semantic 장기 지식 > episodic > working). */
export declare const TIER_PRIOR: Record<string, number>;
/**
 * Hard-protect 카테고리 (ADR 섹션 7.2 {security, incident, decision, rule/policy, retrospective}의
 * A2A 8-카테고리 매핑: decision=의사결정 / convention=규칙 / error_solution=장애해결 / learning=회고).
 */
export declare const HARD_PROTECT_CATEGORIES: Set<string>;
/** retention importancePrior(category) (ADR Open Q6 — hard-protect 1.0 / 지식성 0.7 / 기타 0.5). */
export declare const IMPORTANCE_PRIOR: Record<string, number>;
/** lowUsage 관측창 (생성 후 N일 경과 + access 0이어야 low-usage — 미성숙 usage 신호 보호). */
export declare const OBSERVATION_WINDOW_DAYS = 21;
/** PruneScore 임계 (ADR 섹션 7.3 P 높음/중간 — 보수적 시작). */
export declare const PRUNE_HIGH = 0.7;
export declare const PRUNE_MID = 0.5;
export type Decision = 'KEEP' | 'MERGE' | 'ARCHIVE' | 'DELETE_CANDIDATE';
interface Edge {
    src: string;
    dst: string;
    weight: number;
}
/**
 * PPMI 정규화 (ADR 섹션 6.1 — cooc raw count → PPMI → [0,1] max-norm).
 * pmi(i,j) = log( w(i,j)·total / (rowSum(i)·rowSum(j)) ), ppmi = max(0, pmi).
 * 대칭 양방향 저장 전제(각 쌍 2회) — marginal/total 모두 일관 2배라 PMI 값 불변.
 */
export declare function ppmiNormalize(edges: Edge[]): Edge[];
export interface RankBuildResult {
    nodes: number;
    fusedEdges: number;
    iterations: number;
    converged: boolean;
    decisions: Record<Decision, number>;
    elapsedMs: number;
}
/**
 * 56f: fused graph PPR + MemoryRank/Retention/Prune/DecisionGate 계산 + 컬럼 기록 (shadow).
 * 실행 전제: build-edges + build-signals 완료 (edges 4종 + 56e 신호 컬럼).
 */
export declare function computeRanks(db: MemoryDatabase, opts?: {
    nowMs?: number;
    restart?: number;
}): RankBuildResult;
export {};
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