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Collaborative Filtering

  • Collaborative filtering (CF) is the process of filtering for information or patterns using techniques involving collaboration among multiple agents, viewpoints, data sources, etc.
    • Applications involving very large data sets: sensing and monitoring data, financial data, electronic commerce and web 2.0 applications
  • Example: a method of making automatic predictions (filtering) about the interests of a user by collecting taste information from many users (collaborating)
    • Assumption: those who agreed in the past tend to agree again in the future

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