在netlogo模型库中有一个virus on a network，里面有一个代码to spread-virus' M3 Y$ C# W1 e% ~
ask turtles with [infected?]& K ?3 z3 A) T6 S3 L3 s
[ ask link-neighbors with [not resistant?]: @3 ~7 o5 O5 i: e
[ if random-float 100 < virus-spread-chance0 y& G- p/ U& }7 ]/ F/ j- C
[ 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？
8 Y9 B- {$ {6 K. z$ p: f! Uto do-virus-checks
4 F" J) r% a8 Y# R7 K ask turtles with [infected? and virus-check-timer = 0]+ M# b6 l& Z/ {
[
. j& n9 Y: s: R/ O6 Z% m if random 100 < recovery-chance! }9 `8 }7 o- {- \; M1 U
[
4 R( z+ D! w, }% W: \ ifelse random 100 < gain-resistance-chance
( w- Z) L$ I+ M1 F6 D4 e [ become-resistant ]
m" M( ^, a0 w; a9 i1 ] [ become-susceptible ]) f# O! k7 h+ s% I" {7 Y- r8 Z
]& }* @' h- n0 w$ w0 l( {
]* W9 w* w; Q/ d% ]0 H j) x3 w
end
: Z" B. p+ W$ q下面同样这个问题不明白' O1 ~- n- a2 S. d1 F
小妹求大神帮忙！！ - J, P% R1 V$ \# z- b
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发表于 2015-1-7 11:27:22
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