在netlogo模型库中有一个virus on a network，里面有一个代码to spread-virus, |' B/ `- T$ [& L2 j
ask turtles with [infected?]
- r; V6 E8 v( C7 {9 y [ ask link-neighbors with [not resistant?]" g& s) p8 R6 x+ P: K
[ if random-float 100 < virus-spread-chance
7 a. [0 |! Y1 _ [ become-infected ] ] ]8 K& r; L: z# ^) ^
end
0 c' H! @" z4 D这里为什么virus-spread-chance大于random-float 100,就可以判断出become-infected呢？
7 B9 @: e; g+ fto do-virus-checks/ ~, A/ q4 N3 B
ask turtles with [infected? and virus-check-timer = 0]
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4 Z0 o9 W2 h4 r$ e if random 100 < recovery-chance
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, _/ _8 [* Z8 Q V' Q ifelse random 100 < gain-resistance-chance: H p, E% A8 H* V0 E3 a% K4 [/ g
[ become-resistant ]
9 q; ~" X9 G1 p: W$ o$ N: y0 i& Q! _ [ become-susceptible ]
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]
/ [; w5 j8 T$ |: iend" f. W, U/ n5 D" s2 b
下面同样这个问题不明白
0 a3 y$ |% r' [' M" U5 D小妹求大神帮忙！！ 9 {; h. v; h, B1 d8 u; V# T- f
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发表于 2015-1-7 11:27:22
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