PreferenceSQL - A declarative extension of the SQL query language by preferences behaving as soft constraints

Benefit

  • Context-adaptive and location-based preference modeling
  • Personalized query results, avoiding annoying empty results and reducing the flooding effect
  • Best-matches query model combined with Top-k interface


Example

  • I prefer blue cars with the lowest price

SELECT * FROM car
PREFERRING color = 'blue' AND price LOWEST;
 

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