recommender

type GenericItemBasedRecommender struct {
	// contains filtered or unexported fields
}

type GenericUserBasedRecommender struct {
	// contains filtered or unexported fields
}

type NearestNUserNeighborhood struct {
	// contains filtered or unexported fields
}

type Recommender interface {
	Recommend(userId uint64, howMany int) ([]model.RecommendedItem, error)
	EstimatePreference(userId, itemId uint64) (float64, error)
}

type UserNeighborhood interface {
	// 获取指定用户的邻居用户ID
	Neighborhoods(userId uint64) ([]uint64, error)
}