;% Data from StatLib (ftp stat.cmu.edu/datasets)
;%
;% Data from which conclusions  were  drawn  in  the  article  "Sleep  in
;% Mammals: Ecological and Constitutional Correlates" by Allison, T.  and
;% Cicchetti, D. (1976), _Science_, November 12, vol. 194,  pp.  732-734.
;% Includes brain and body  weight,  life  span,  gestation  time,  time
;% sleeping, and predation and danger indices for 62 mammals.
;%
;%
;%
;% Variables below (from left to right) for Mammals Data Set:
;%
;% species of animal
;%
;% body weight in kg
;%
;% brain weight in g
;%
;% slow wave ("nondreaming") sleep (hrs/day)
;%
;% paradoxical ("dreaming") sleep (hrs/day)
;%
;% total sleep (hrs/day)  (sum of slow wave and paradoxical sleep)
;%
;% maximum life span (years)
;%
;% gestation time (days)
;%
;% predation index (1-5)
;%                 1 = minimum (least likely to be preyed upon)
;%                 5 = maximum (most likely to be preyed upon)
;%
;% sleep exposure index (1-5)
;%                 1 = least exposed (e.g. animal sleeps in a
;%                     well-protected den)
;%                 5 = most exposed
;%
;% overall danger index (1-5)
;%                 (based on the above two indices and other information)
;%                 1 = least danger (from other animals)
;%                 5 = most danger (from other animals)
;%
;% Note: Missing values denoted by -999.0
;%
;%
;% For more details, see
;%
;% Allison, Truett and Cicchetti, Domenic V. (1976), "Sleep  in  Mammals:
;% Ecological and Constitutional  Correlates",  _Science_,  November  12,
;% vol. 194, pp. 732-734.
;%
;% The above data set can be freely used for non-commercial purposes  and
;% can be freely distributed (permission in  writing  obtained  from  Dr.
;% Truett Allison).
;%
;% Submitted by Roger Johnson
;% rwjohnso@silver.sdsmt.edu
;%
;% Total sleep treated as the class attribute. Attributes for slow
;% wave and paradoxical sleep have been deleted. (The animal's
;% name has also been deleted.)
(defun mammal-sleep ()
  (data
    :name 'mammal-sleep
    :columns '($body_weight $brain_weight $max_life_span $gestation_time predation_index sleep_exposure_index danger_index $total_sleep)
    :egs
    '(
      (6654 5712 38.6 645 3 5 3 3.3)
      (1 6.6 4.5 42 3 1 3 8.3)
      (3.385 44.5 14 60 1 1 1 12.5)
      (0.92 5.7 ? 25 5 2 3 16.5)
      (2547 4603 69 624 3 5 4 3.9)
      (10.55 179.5 27 180 4 4 4 9.8)
      (0.023 0.3 19 35 1 1 1 19.7)
      (160 169 30.4 392 4 5 4 6.2)
      (3.3 25.6 28 63 1 2 1 14.5)
      (52.16 440 50 230 1 1 1 9.7)
      (0.425 6.4 7 112 5 4 4 12.5)
      (465 423 30 281 5 5 5 3.9)
      (0.55 2.4 ? ? 2 1 2 10.3)
      (187.1 419 40 365 5 5 5 3.1)
      (0.075 1.2 3.5 42 1 1 1 8.4)
      (3 25 50 28 2 2 2 8.6)
      (0.785 3.5 6 42 2 2 2 10.7)
      (0.2 5 10.4 120 2 2 2 10.7)
      (1.41 17.5 34 ? 1 2 1 6.1)
      (60 81 7 ? 1 1 1 18.1)
      (529 680 28 400 5 5 5 ?)
      (27.66 115 20 148 5 5 5 3.8)
      (0.12 1 3.9 16 3 1 2 14.4)
      (207 406 39.3 252 1 4 1 12)
      (85 325 41 310 1 3 1 6.2)
      (36.33 119.5 16.2 63 1 1 1 13)
      (0.101 4 9 28 5 1 3 13.8)
      (1.04 5.5 7.6 68 5 3 4 8.2)
      (521 655 46 336 5 5 5 2.9)
      (100 157 22.4 100 1 1 1 10.8)
      (35 56 16.3 33 3 5 4 ?)
      (0.005 0.14 2.6 21.5 5 2 4 9.1)
      (0.01 0.25 24 50 1 1 1 19.9)
      (62 1320 100 267 1 1 1 8)
      (0.122 3 ? 30 2 1 1 10.6)
      (1.35 8.1 ? 45 3 1 3 11.2)
      (0.023 0.4 3.2 19 4 1 3 13.2)
      (0.048 0.33 2 30 4 1 3 12.8)
      (1.7 6.3 5 12 2 1 1 19.4)
      (3.5 10.8 6.5 120 2 1 1 17.4)
      (250 490 23.6 440 5 5 5 ?)
      (0.48 15.5 12 140 2 2 2 17)
      (10 115 20.2 170 4 4 4 10.9)
      (1.62 11.4 13 17 2 1 2 13.7)
      (192 180 27 115 4 4 4 8.4)
      (2.5 12.1 18 31 5 5 5 8.4)
      (4.288 39.2 13.7 63 2 2 2 12.5)
      (0.28 1.9 4.7 21 3 1 3 13.2)
      (4.235 50.4 9.8 52 1 1 1 9.8)
      (6.8 179 29 164 2 3 2 9.6)
      (0.75 12.3 7 225 2 2 2 6.6)
      (3.6 21 6 225 3 2 3 5.4)
      (14.83 98.2 17 150 5 5 5 2.6)
      (55.5 175 20 151 5 5 5 3.8)
      (1.4 12.5 12.7 90 2 2 2 11)
      (0.06 1 3.5 ? 3 1 2 10.3)
      (0.9 2.6 4.5 60 2 1 2 13.3)
      (2 12.3 7.5 200 3 1 3 5.4)
      (0.104 2.5 2.3 46 3 2 2 15.8)
      (4.19 58 24 210 4 3 4 10.3)
      (3.5 3.9 3 14 2 1 1 19.4)
      (4.05 17 13 38 3 1 1 ?)
      )))