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Multi-Relational Features

  • A multi-relational feature is defined by:
    • A join path, e.g., Student → Register → OpenCourse → Course
    • An attribute, e.g., Course.area
    • (For numerical feature) an aggregation operator, e.g., sum or average
  • Categorical feature f = [Student → Register → OpenCourse → Course, Course.area, null]

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