在netlogo模型库中有一个virus on a network，里面有一个代码to spread-virus) |/ ^5 a5 N& H( [. K* q3 ~6 q* h# S
ask turtles with [infected?]
: l3 P, W# F9 u [ ask link-neighbors with [not resistant?]
+ b0 l& Z' q" w0 E3 X$ a& @ [ if random-float 100 < virus-spread-chance( q/ w+ K4 g% H# K
[ become-infected ] ] ]0 R# g, v/ j- W2 B7 l: T
end1 z7 v O7 s- b& V! Y" p
这里为什么virus-spread-chance大于random-float 100,就可以判断出become-infected呢？% S" |8 O/ F( \/ ` R
to do-virus-checks8 [0 v9 d: b% H$ i5 C3 z" w
ask turtles with [infected? and virus-check-timer = 0]5 [4 x7 T: @0 W, m
[
. l$ @! G& G* I2 ]9 s6 k if random 100 < recovery-chance, d' Q0 K( c- `# f; {7 G
[, `1 u H" A9 q2 a9 R8 D0 D
ifelse random 100 < gain-resistance-chance
& M. q/ E0 b/ s$ @ f [ become-resistant ]4 \7 N( G6 @0 z6 m* \9 N
[ become-susceptible ]
% I" h% i E0 j+ ]0 W ]
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end
& Q& }+ I, O v7 j& _8 b下面同样这个问题不明白
3 C: g1 G; a0 J& E0 G( U* ^$ S小妹求大神帮忙！！
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发表于 2015-1-7 11:27:22
楼主