Thematic distance
¥Examples
¥DA(tit,
tit) 
= 0
= 0¥DA(tit,
passerine) = 0.4
= 0.4¥DA(tit,
bird) = 0.7
= 0.7¥DA(tit,
train) = 1.14
= 1.14 ¥DA(tit,
insect) = 0.62
= 0.62 tit = insectivorous passerine bird É