Method SearchWithConfidenceFilter

pkg/memory/semantic.go:238–284

SearchWithConfidenceFilter 执行检索并按置信度过滤。 minConfidence: 最低置信度阈值（0.0-1.0）

(ctx context.Context, query string, meta map[string]any, topK int, minConfidence float64)

// SearchWithConfidenceFilter 执行检索并按置信度过滤。
// minConfidence: 最低置信度阈值（0.0-1.0）
func (sm *SemanticMemory) SearchWithConfidenceFilter(ctx context.Context, query string, meta map[string]any, topK int, minConfidence float64) ([]vector.Hit, error) {
	if !sm.cfg.EnableProvenance {
		return sm.Search(ctx, query, meta, topK)
	}

	// 先执行标准检索
	hits, err := sm.Search(ctx, query, meta, topK*2) // 获取更多结果以便过滤
	if err != nil {
		return nil, err
	}

	// 过滤和重排序
	var filtered []vector.Hit
	for _, hit := range hits {
		provenance := FromMetadata(hit.Metadata)
		if provenance == nil {
			continue
		}

		// 更新置信度
		if sm.cfg.ConfidenceCalculator != nil {
			sm.cfg.ConfidenceCalculator.UpdateConfidence(provenance)
		}

		// 过滤低置信度
		if provenance.Confidence < minConfidence {
			continue
		}

		// 标记访问
		provenance.MarkAccessed()

		// 重新计算相关性得分（结合置信度）
		if sm.cfg.ConfidenceCalculator != nil {
			hit.Score = sm.cfg.ConfidenceCalculator.ScoreByRelevance(hit.Score, provenance)
		}

		filtered = append(filtered, hit)
	}

	// 限制返回数量
	if len(filtered) > topK {
		filtered = filtered[:topK]
	}

	return filtered, nil
}

// SearchBySourceType 按来源类型检索记忆。
func (sm *SemanticMemory) SearchBySourceType(ctx context.Context, query string, meta map[string]any, topK int, sourceTypes []SourceType) ([]vector.Hit, error) {