Recommandation

• Demographic-based Recommendation
• Content-based Recommendation
• Collaborative Filtering-based Recommendation

Collaborative Filtering

Filtering: method of making automatic predictions about the interests of a user
Collaborating: by collecting preferences or taste information from many users
Underlying Assumption: if a person A has the same opinion as a person B on an issue, A is more likely to have B’s opinion on a different issue than that of a randomly chosen person.

Memory-based (user-based / item-based)

• 利用相似函数判断用户相似度

Model-based

关联算法

• Apriori
• FP Tree
• PrefixSpan

聚类算法

• K-Means
• BIRCH
• DBSCAN
• spectral clustering

分类问题

• 逻辑回归
• Naive Bayesian