;;; This data is the training set from Quinlan's paper on ID3.

;;; *domains* setting
( (outlook      NOMINAL (sunny overcast rain))
  (temperature  NOMINAL (cool mild hot))
  (humidity     NOMINAL (high normal))
  (windy        NOMINAL (true false)) )

  ;;; abbreviations
  nil

  ;;; training set
  ((- (outlook sunny   ) (temperature hot ) (humidity high  ) (windy false))
   (- (outlook sunny   ) (temperature hot ) (humidity high  ) (windy true ))
   (+ (outlook overcast) (temperature hot ) (humidity high  ) (windy false))
   (+ (outlook rain    ) (temperature mild) (humidity high  ) (windy false))
   (+ (outlook rain    ) (temperature cool) (humidity normal) (windy false))
   (- (outlook rain    ) (temperature cool) (humidity normal) (windy true ))
   (+ (outlook overcast) (temperature cool) (humidity normal) (windy true ))
   (- (outlook sunny   ) (temperature mild) (humidity high  ) (windy false))
   (+ (outlook sunny   ) (temperature cool) (humidity normal) (windy false))
   (+ (outlook rain    ) (temperature mild) (humidity normal) (windy false))
   (+ (outlook sunny   ) (temperature mild) (humidity normal) (windy true ))
   (+ (outlook overcast) (temperature mild) (humidity high  ) (windy true ))
   (+ (outlook overcast) (temperature hot ) (humidity normal) (windy false))
   (- (outlook rain    ) (temperature mild) (humidity high  ) (windy true ))
)