在netlogo模型库中有一个virus on a network，里面有一个代码to spread-virus7 n) M% u- J4 x) U& g9 U) A7 `3 k% t# v
ask turtles with [infected?]
1 ]2 D, G& G+ P [ ask link-neighbors with [not resistant?]4 T3 s/ n5 L" W+ p( r% q% M4 o
[ if random-float 100 < virus-spread-chance
4 R" D# B% d" R' _* J [ become-infected ] ] ]' C3 Q+ n5 l5 z) E
end
7 q7 u0 f: G* \) d3 ?- Y- \这里为什么virus-spread-chance大于random-float 100,就可以判断出become-infected呢？
( e( U. N- O% Cto do-virus-checks
4 M7 }( L! C5 @& Y" H3 S1 y ask turtles with [infected? and virus-check-timer = 0]& k: v r- w, c0 v! o8 V- |
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if random 100 < recovery-chance
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ifelse random 100 < gain-resistance-chance+ @+ ~/ I- K/ K
[ become-resistant ]
5 ~4 S+ ]4 U3 {$ p: w7 ]6 | [ become-susceptible ]
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end. I8 S7 V- `9 n) z% _7 T
下面同样这个问题不明白1 ^7 M, Q! Y v
小妹求大神帮忙！！
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发表于 2015-1-7 11:27:22
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