在netlogo模型库中有一个virus on a network，里面有一个代码to spread-virus& c/ K5 X; p, y" h, Q+ n
ask turtles with [infected?]# S. J. q/ f+ U' A$ b4 F
[ ask link-neighbors with [not resistant?]0 u; E+ x/ i" y- e, q0 S
[ if random-float 100 < virus-spread-chance, ^0 ^9 s8 W! Y' Y$ Y& S( f) D
[ become-infected ] ] ]
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这里为什么virus-spread-chance大于random-float 100,就可以判断出become-infected呢？
6 _: j0 R( ?$ K* h& qto do-virus-checks
9 }) O( z. [9 r) s, {, ~1 G ask turtles with [infected? and virus-check-timer = 0]0 I: w. |! _7 N
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if random 100 < recovery-chance
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ifelse random 100 < gain-resistance-chance. F+ w& h1 {" s' M% V) [
[ become-resistant ]" v f& u: F0 ?# W
[ become-susceptible ]
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]: N# L' n1 V1 q' y
end% h, h6 F, C$ s, A0 Z
下面同样这个问题不明白8 s. w+ b) y3 i" o# O
小妹求大神帮忙！！
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发表于 2015-1-7 11:27:22
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