Method GetStats

pkg/memory/preference.go:365–400

GetStats 获取统计信息

(userID string)

// GetStats 获取统计信息
func (pm *PreferenceManager) GetStats(userID string) PreferenceStats {
	pm.mu.RLock()
	defer pm.mu.RUnlock()

	stats := PreferenceStats{
		TotalPreferences:     len(pm.preferences[userID]),
		CategoryDistribution: make(map[PreferenceCategory]int),
		AverageStrength:      0,
		HighStrengthCount:    0,
		MediumStrengthCount:  0,
		LowStrengthCount:     0,
	}

	if stats.TotalPreferences == 0 {
		return stats
	}

	totalStrength := 0.0

	for _, pref := range pm.preferences[userID] {
		stats.CategoryDistribution[pref.Category]++
		totalStrength += pref.Strength

		if pref.Strength >= 0.7 {
			stats.HighStrengthCount++
		} else if pref.Strength >= 0.4 {
			stats.MediumStrengthCount++
		} else {
			stats.LowStrengthCount++
		}
	}

	stats.AverageStrength = totalStrength / float64(stats.TotalPreferences)

	return stats
}

// PreferenceStats 偏好统计信息
type PreferenceStats struct {