Recommender Systems

Content-Based Recommendation

• Item Profiling
  
  • Discovering Features
    - tfxidf
  • Distance/Similarity
    - Measures: Jaccard, Cosine, …
    - Algorithms for Massive Datasets: MinHash, LSH
• User Profiling
• Classification & Decision Tree

Collaborative Filtering

• Distance/Similarity
• Clustering Users and Items

Dimensionality Reduction

• SVD (Singular-Value Decomposition)
  
  • UV-Decomposition

References

• http://sens.tistory.com/331
• [Paper] http://arxiv.org/pdf/1202.1112.pdf
• http://foaf.tistory.com/3
• Netflix 영화추천 시스템 분석
• 한국형 음악추천서비스의 필요성