Collaborative filtering based on multi-channel diffusion

@article{Shang2009CollaborativeFB,
  title={Collaborative filtering based on multi-channel diffusion},
  author={Ming-Sheng Shang and Ci-Hang Jin and Tao Zhou and Yi-Cheng Zhang},
  journal={CoRR},
  year={2009},
  volume={abs/0906.1148}
}
In this paper, by applying a diffusion process, we propose a new index to quantify the similarity between two users in a user–object bipartite graph. To deal with the discrete ratings on objects, we use a multi-channel representation where each object is mapped to several channels with the number of channels being equal to the number of different ratings. Each channel represents a certain rating and a user having voted an object will be connected to the channel corresponding to the rating… CONTINUE READING

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