在netlogo模型库中有一个virus on a network，里面有一个代码to spread-virus/ M) C* r' T* L% i2 m
ask turtles with [infected?]7 Z% f+ w- \( }
[ ask link-neighbors with [not resistant?] X8 F) G6 c" z" s9 `
[ if random-float 100 < virus-spread-chance$ M0 u' ^8 Y, B% A9 E1 X* B
[ become-infected ] ] ]; S! G. l; p/ L, M' r1 H6 g5 a3 {
end
" _8 M" k8 [& ^/ k$ I) y$ D" b这里为什么virus-spread-chance大于random-float 100,就可以判断出become-infected呢？
/ |" K$ _1 \+ \9 v3 O* y& nto do-virus-checks
) t+ n8 e) ~- d5 n8 x$ y; y2 Q ask turtles with [infected? and virus-check-timer = 0]6 n# F' ]% @2 w* C* {
[% \3 c- h5 W- |8 f. {
if random 100 < recovery-chance, f( j; {( H ?0 o% {
[5 n1 u3 |+ O# O) M. e' _8 T7 c
ifelse random 100 < gain-resistance-chance
8 n8 d% v$ m) ~7 L+ {. j [ become-resistant ]7 ^: g( p( |# S( D
[ become-susceptible ]
2 N4 U* }0 K6 w9 l# w# S; C ]
# P2 d' `4 ?. w ]
: P8 e. g+ i0 jend
3 `. g; k3 x' l+ C/ `下面同样这个问题不明白
& U4 z. O( q" v7 g. |- I, U( R- G+ G小妹求大神帮忙！！ : l$ [& L+ T- M4 w2 z$ G
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发表于 2015-1-7 11:27:22
楼主