在netlogo模型库中有一个virus on a network，里面有一个代码to spread-virus
{3 A4 s/ l' z _7 j- q( K! y ask turtles with [infected?]: ~6 w- Y5 C: R' o( ~- W6 M) w8 Q
[ ask link-neighbors with [not resistant?]% X8 E9 V p1 F4 _6 n
[ if random-float 100 < virus-spread-chance2 Z3 M, ^& R1 U3 [* I9 a
[ 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？5 e2 @. u: _& f: J
to do-virus-checks/ r- b1 w/ x! Y
ask turtles with [infected? and virus-check-timer = 0]
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- e: o6 I/ t. h* c if random 100 < recovery-chance8 e* M3 x/ ?2 M* l! p6 P) Q
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ifelse random 100 < gain-resistance-chance. s3 ^. e5 w1 R1 X
[ become-resistant ]
2 n+ `( b, u, v u' F( ?8 C [ become-susceptible ]
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% F r0 {" y' H2 `; e. M: ]end# {8 z% x k5 k9 D* B5 n# D& q
下面同样这个问题不明白! C* `* z) U T. ?: O5 ~& m
小妹求大神帮忙！！ & k3 [7 ]8 X j& E2 U9 s- |
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发表于 2015-1-7 11:27:22
楼主