Mushroom               package:arules               R Documentation

_M_u_s_h_r_o_o_m _D_a_t_a _S_e_t

_D_e_s_c_r_i_p_t_i_o_n:

     A data set with descriptions of hypothetical samples corresponding
     to 23 species of gilled mushrooms in the Agaricus and Lepiota
     Family, classified according to their edibility as (definitely)
     'edible' or 'poisonous' (definitely poisonous, or of unknown
     edibility and not recommended).

_U_s_a_g_e:

     data("Mushroom")

_F_o_r_m_a_t:

     A data frame with 8124 observations on the following 23 variables.

     '_c_l_a_s_s_e_s' a factor with levels 'edible' and 'poisonous'.

     '_c_a_p-_s_h_a_p_e' a factor with levels 'bell', 'conical', 'convex',
          'flat', 'knobbed', 'sunken'.

     '_c_a_p-_s_u_r_f_a_c_e' a factor with levels 'fibrous', 'grooves', 'scaly',
          'smooth'.

     '_c_a_p-_c_o_l_o_r' a factor with levels 'brown', 'buff', 'cinnamon',
          'gray', 'green', 'pink', 'purple', 'red', 'white', 'yellow'.

     '_b_r_u_i_s_e_s?' a factor with levels 'bruises' and 'no'.

     '_o_d_o_r' a factor with levels 'almond', 'anise', 'creosote',
          'fishy', 'foul', 'musty', 'none', 'pungent', 'spicy'.

     '_g_i_l_l-_a_t_t_a_c_h_m_e_n_t' a factor with levels 'attached' and 'free'. 

     '_g_i_l_l-_s_p_a_c_i_n_g' a factor with levels 'close' and 'crowded'.

     '_g_i_l_l-_s_i_z_e' a factor with levels 'broad' and 'narrow'.

     '_g_i_l_l-_c_o_l_o_r' a factor with levels 'black', 'brown', 'buff',
          'chocolate', 'gray', 'green', 'orange', 'pink', 'purple',
          'red', 'white', and 'yellow'.

     '_s_t_a_l_k-_s_h_a_p_e' a factor with levels 'enlarging' and 'tapering'.

     '_s_t_a_l_k-_r_o_o_t' a factor with levels 'bulbous', 'club', 'equal', and
          'rooted'. 

     '_s_t_a_l_k-_s_u_r_f_a_c_e-_a_b_o_v_e-_r_i_n_g' a factor with levels 'ibrous', 'scaly',
          'silky', and 'smooth'.

     '_s_t_a_l_k-_s_u_r_f_a_c_e-_b_e_l_o_w-_r_i_n_g' a factor with levels 'ibrous', 'scaly',
          'silky', and 'smooth'.

     '_s_t_a_l_k-_c_o_l_o_r-_a_b_o_v_e-_r_i_n_g' a factor with levels 'brown', 'buff',
          'cinnamon', 'gray', 'orange', 'pink', 'red', 'white', and
          'yellow'.

     '_s_t_a_l_k-_c_o_l_o_r-_b_e_l_o_w-_r_i_n_g' a factor with levels 'brown', 'buff',
          'cinnamon', 'gray', 'orange', 'pink', 'red', 'white', and
          'yellow'.

     '_v_e_i_l-_t_y_p_e' a factor with levels 'partial'.

     '_v_e_i_l-_c_o_l_o_r' a factor with levels 'brown', 'orange', 'white', and
          'yellow'.

     '_r_i_n_g-_n_u_m_b_e_r' a factor with levels 'one', 'one', and 'two'. 

     '_r_i_n_g-_t_y_p_e' a factor with levels 'evanescent', 'flaring', 'large',
          'none', and 'pendant'. 

     '_s_p_o_r_e-_p_r_i_n_t-_c_o_l_o_r' a factor with levels 'black', 'brown', 'buff',
          'chocolate', 'green', 'orange', 'purple', 'white', and
          'yellow'.

     '_p_o_p_u_l_a_t_i_o_n' a factor with levels 'abundant', 'clustered',
          'numerous', 'scattered', 'several', and 'solitary'.

     '_h_a_b_i_t_a_t' a factor with levels 'grasses', 'leaves', 'meadows',
          'paths', 'urban', 'waste', and 'woods'.

_D_e_t_a_i_l_s:

     The records are drawn from G. H. Lincoff (1981) (Pres.), _The
     Audubon Society Field Guide to North American Mushrooms_. New
     York: Alfred A. Knopf. (See pages 500-525 for the Agaricus and
     Lepiota Family.)

     The Guide clearly states that there is no simple rule for
     determining the edibility of a mushroom; no rule like "leaflets
     three, let it be" for Poisonous Oak and Ivy.

     Unused levels in the original data were dropped.

_S_o_u_r_c_e:

     <URL: http://www.ics.uci.edu/~mlearn/MLRepository.html>

_R_e_f_e_r_e_n_c_e_s:

     Blake, C.L. & Merz, C.J. (1998). UCI Repository of Machine
     Learning Databases. Irvine, CA: University of California,
     Department of Information and Computer Science.

_E_x_a_m_p_l_e_s:

     data("Mushroom")
     summary(Mushroom)

