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Constraint-based (Query-Directed) Mining

  • Finding all the patterns in a database autonomously? — unrealistic!
    • The patterns could be too many but not focused!
  • Data mining should be an interactive process
    • User directs what to be mined using a data mining query language (or a graphical user interface)
  • Constraint-based mining
    • User flexibility: provides constraints on what to be mined
    • Optimization: explores such constraints for efficient mining — constraint-based mining: constraint-pushing, similar to push selection first in DB query processing
    • Note: still find all the answers satisfying constraints, not finding some answers in “heuristic search”

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