在netlogo模型库中有一个virus on a network，里面有一个代码to spread-virus
, W7 y9 l, n/ ?4 C1 N3 z ask turtles with [infected?]
/ b3 s3 Y9 V7 |. j [ ask link-neighbors with [not resistant?]
: x! F4 v- D5 p/ M N$ A* L/ C. x8 G [ if random-float 100 < virus-spread-chance
, o+ Y- _* ` }7 U3 c/ g% G [ 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？
. B% q) i! J0 H% a- i7 mto do-virus-checks
# J/ D v% ]$ x- A, {0 y0 A ask turtles with [infected? and virus-check-timer = 0]
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if random 100 < recovery-chance
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ifelse random 100 < gain-resistance-chance
( }& z( a/ n* L* h [ become-resistant ]9 A) G s6 q% S4 y. j# b& r
[ become-susceptible ]: l- h& H* B9 n3 j
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end
+ e4 M2 J- M* p* `. \下面同样这个问题不明白) B. U' `. a* t3 r2 ]
小妹求大神帮忙！！
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发表于 2015-1-7 11:27:22
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