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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
/ o, b6 o; A0 a4 Q7 X3 I: pto do-business
# h# H+ t& j% B, {! C  l: G rt random 360
& z+ Y& N: u# H/ q6 k fd 1% N: t% {9 N8 B3 t' Q
ifelse(other turtles-here != nobody)[4 ]# }5 m4 K( m8 @! W& r* t
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题./ `: s# {; L( F( N
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ; o/ V+ m$ t: J) w0 F5 }) c
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
+ k3 [2 f) I. c) f, e* V( m8 V; G$ f   set [trade-record-one-len] of self length [trade-record-one] of self* {$ k* G" O4 Z* K+ r8 m1 p1 T
   set trade-record-current( list (timer) (random money-upper-limit))
, D9 A( {9 w+ L" M% j+ D6 T4 \1 H$ q, o) ]4 S; x' }& Q& k
问题的提示如下:) z  h. Z; ^$ m' Y. ~

& \& F8 X8 v& }) a5 B. X( serror while turtle 50 running OF in procedure DO-BUSINESS7 D- H. t5 ]" B
  called by procedure GO7 I1 M* }- J: Y& u% s- b
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
% q/ V$ Z% p% A+ p
(halted running of go)
& S* {: f- x3 W  G& \& m4 B  e2 k9 I0 A& N
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~! \: p1 G( t  E6 e5 X" d
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教/ X7 H. B  P1 z7 q& F* S. F
globals[5 \6 d3 Q2 `: s. O1 g1 o: k
xmax- L6 l# K7 p5 o- }
ymax
5 ^8 K9 F6 g/ m5 _! ], Jglobal-reputation-list4 J/ y1 e+ s9 C! S$ U+ m& E

( L/ O- A  B8 }+ }: l;;
每一个turtle的全局声誉都存在此LIST
9 R) R$ I1 m8 j/ J# V4 u7 o* hcredibility-list
( G  b  V1 A9 v* q; J;;
每一个turtle的评价可信度+ q) t  V: l2 T. E
honest-service
% a3 q( u$ W- T+ {+ Hunhonest-service7 |  C' {" m: S+ i" A
oscillation
6 {5 A9 r- A# `# `rand-dynamic% U* X/ ?3 W1 W1 s
]7 C3 B8 l4 h8 x9 l6 }* \
1 V5 l+ O5 c" o, ]: d
turtles-own[
7 P4 A: ~% q, B* |3 p" F8 htrade-record-all+ y/ o8 s9 ]- k; q: j' p& }
;;a list of lists,
trade-record-one组成2 b( P% o( m0 r
trade-record-one
! h9 C0 [$ ]4 Q. z;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录9 h+ R. s6 l. O
. M1 L5 k: r4 L$ i8 T
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
# U! t% `) W" x* _& atrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
+ O1 L4 B5 @3 m* R8 D3 }' Hcredibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
2 M  D* t6 L# a2 {: Qneighbor-total4 m- g& v! O2 }; U, Z5 ]
;;
记录该turtle的邻居节点的数目, x3 o2 m0 s' @9 Q# a
trade-time
5 |" |3 a- F3 y5 }( i;;
当前发生交易的turtle的交易时间
& K) i( S0 a/ |6 R0 Cappraise-give
- |7 o  F/ k5 T& D;;
当前发生交易时给出的评价
# Z  Q. L$ b) h1 `/ Y% J$ |appraise-receive
6 s6 N2 H) |0 G& Y) S9 {  o- ^  N;;
当前发生交易时收到的评价
8 `2 M1 q! w& ?) q5 \& wappraise-time
8 P, ]3 c. d; R1 L9 \; M2 O;;
当前发生交易时的评价时间
3 E. i8 Y' z! [" q/ e! L3 H+ ^; wlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉9 i. a5 P, m# j
trade-times-total
" f& P' v4 q& p! e1 W: E;;
与当前turtle的交易总次数0 P8 A* ?- V9 k4 u$ }3 x' F1 Q
trade-money-total6 l. o$ s$ _/ }% T8 O- h
;;
与当前turtle的交易总金额
6 b; k; z$ Y8 A" a2 R0 D! blocal-reputation! o0 C5 u, @( t% D/ i7 R5 S) e
global-reputation
+ p0 S1 @) A* `credibility
8 S) o0 M/ s: L& h$ c# E;;
评价可信度,每次交易后都需要更新3 q3 m& n% W. \
credibility-all) N7 F& ]6 T$ i! l( K3 q
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据  l9 b# w! z' x  T4 Y; a

" g! k# z# l+ S3 D5 H;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
# v0 T& O8 E6 P/ K4 S+ dcredibility-one
) E* _: ?* {. m* s# E;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people' B: A2 a5 {  T" o
global-proportion- }7 b: V) J6 d# _5 a# N
customer
# _4 H2 N5 J+ E& Icustomer-no
0 p& B/ s, I  i1 h& Y3 rtrust-ok& H! d/ v& c7 E2 D) E) C
trade-record-one-len;;trade-record-one的长度
) t. F& ]$ y) w/ s4 L9 {]/ `3 A$ a9 f. H, J& B( m& e3 C# y

4 T" u; p/ d0 x  z;;setup procedure
0 W# w8 L3 J! O5 M" k& f% i7 \; `! H2 Q8 ?: h. v2 e
to setup
: Y$ d% I% b* B& k/ o2 }# D; b- S  u9 Y4 K
ca
7 x" e! S1 ~, l: j6 A

1 {4 C  x& V4 B' \5 Binitialize-settings

  W5 d6 X9 |- ^& q+ E
1 R* B. t' D0 d1 F0 Ucrt people [setup-turtles]
% ?% M- o5 Y- ]( R/ y& ^

% C+ A  w+ x5 c+ X" lreset-timer
  r" C8 P8 o) c# R% r

/ F" x) G+ f2 X* V. \9 upoll-class

  ^( {% q9 N0 s' h2 e0 r& ~2 T! M' Q  F8 V
setup-plots

) K' q& F7 V9 T3 G; \# A; x$ c3 {  F% K7 _+ F# Q
do-plots
. ]  Z; c' ?1 G# b% o
end" I6 J; U- P2 y0 B5 U0 F6 Q7 ?) e
7 G9 g7 y+ l5 X
to initialize-settings
1 t; g+ R1 n7 V  S9 P0 V7 T; y$ x
set global-reputation-list []

/ H- l  t+ T6 h; j1 H: Z+ }, P( o" X; E. ?
set credibility-list n-values people [0.5]

' m( H! D/ F4 X" m  v- z* N3 u; ]9 {, R3 R. y& V
set honest-service 0

' N  P  x; l: X/ r  B; ]" w7 G( z- J4 J% {+ n
set unhonest-service 0
+ Y  p+ C2 H8 X# a9 ?
( O0 t$ p7 T9 O' Q8 g$ q# ~
set oscillation 0

6 w$ z& a2 k  {& e; L) o6 j
! Y$ E+ J( i( l0 a: rset rand-dynamic 0
: S, q4 G: `# o& x2 w$ O
end
) i1 X* n# z. V9 E* T) X& G, F  U! g, ]
to setup-turtles + e$ U1 z$ b# E
set shape "person"9 w0 s- A  Z% a' K& l. d( h+ _3 p
setxy random-xcor random-ycor) R' k5 N9 P' F1 g3 b3 u8 s  x$ s
set trade-record-one []
9 w+ ^( H: s# \/ i  I

0 k/ T6 @' N9 i$ r% ?: Lset trade-record-all n-values people [(list (? + 1) 0 0)] + M9 Z/ A3 D5 z  |/ F" O

; C0 h  e2 _/ l( N$ iset trade-record-current []$ d1 ]! y: l% r8 w
set credibility-receive []5 z/ Q3 R- V3 @/ o) h# W8 A
set local-reputation 0.5. V/ [# j& K; V3 Q' n! d
set neighbor-total 0/ @& X) T  I+ S% @2 q* }
set trade-times-total 0
) F5 Q1 V* I( u. W6 Yset trade-money-total 0! b$ M2 j+ A0 Q6 q
set customer nobody$ X" M4 H6 ^4 Y
set credibility-all n-values people [creat-credibility]3 x$ P3 h  g9 X) J5 @
set credibility n-values people [-1]
/ ]( n$ \7 c  Jget-color
  X' [# |' Q6 U2 b% F1 l. Z' }* Q

9 l/ g9 `- \# Q7 c. A! R# jend$ g+ a- [) m# O' e

/ o  J! I0 S8 Q* b  i8 f- x+ rto-report creat-credibility  M2 S! i/ D$ ?5 ?- i
report n-values people [0.5]
" B) w* G" o! [. vend
% G2 v/ M$ h  c9 t% |1 A  t& T( i
. ]' i7 L' t* V) A% s' o2 C/ oto setup-plots, |# i& ]1 B# s) m" D# a# {

; c# w% L0 @  E% i. F7 lset xmax 30
6 x3 a( o1 s, y2 n! v& r

3 |4 }+ b7 f4 ^5 h) ~set ymax 1.0

1 \0 N0 V. M3 ]6 v0 j7 G' R1 Z
  m+ a3 y, X5 Z6 Y8 V$ Z+ mclear-all-plots

+ ^  H( V0 m6 d! s% G. q! O+ k+ G, z+ ]# I
setup-plot1
+ l4 d* ~& \3 S
; b- f+ U% `4 |! {- Z% t: n: h0 x$ Y
setup-plot2

& a2 @3 k# K. _$ r3 J# J, F5 J: P- D3 E
setup-plot3

* H  B' _& D0 yend
6 k0 E) a0 _/ w6 N% Z+ Y, x; i4 ^, m) x& N5 o5 v4 e
;;run time procedures% W) m7 L6 w/ I' Y
- j/ a0 f& l6 h7 i
to go2 [$ Y" j# c/ e5 B' y7 B) x0 n
8 ?% d8 k6 H0 o! Z
ask turtles [do-business]
, _0 u8 J; k" {1 x
end) C& q* S2 w" n4 ]
1 k: w0 `. X5 ^1 X/ x' X
to do-business 2 X  l' L6 t6 ~1 G, }
! w6 p( r& p* k, V: X4 ?" E

3 z# n3 W1 L/ b! O) x+ K( `4 ~rt random 360
6 y' X. _% I+ @( p8 i$ h

  F' J# P/ D( j, r9 ?4 yfd 1
+ J1 `: N0 W  h+ o: \# p

" D0 D8 L% F' ~# _" Iifelse(other turtles-here != nobody)[

. w/ A- B+ [' v5 Y* b* I
, @3 O: q# P$ b; V/ Tset customer one-of other turtles-here
8 G- L* C5 n% L; n# `- ?
, o% T% a4 p$ n. e
;; set [customer] of customer myself
* t. \: L) G4 L; e4 }1 d

9 v! G) D' z$ a; nset [trade-record-one] of self item (([who] of customer) - 1)
# R; }& w% N' g. x0 u7 Z[trade-record-all]of self
6 h6 B; N6 I, [2 W, y) C2 j" d;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
) z) y. y: D! o1 H, X/ ^: V
# R1 Z2 l8 k# J+ G; o, m
set [trade-record-one] of customer item (([who] of self) - 1)+ Q: U8 ^- z" a, E2 Q8 \' c+ L
[trade-record-all]of customer
$ `7 p/ ^8 o- Z  f: h/ P6 K2 g9 F
: r  k( b: }; z: I$ B
set [trade-record-one-len] of self length [trade-record-one] of self

) P$ e  D# F6 |: l6 E9 c  S9 R) ~1 c9 Q" G& k
set trade-record-current( list (timer) (random money-upper-limit))

9 C; b! O. F/ O; v1 \2 V2 c3 d3 ~
8 r% ]# b2 w7 y. {7 e' N% f+ Kask self [do-trust]
  Z) ~5 i! t8 K9 ^' A; I- r;;
先求ij的信任度/ T+ V2 ~0 K4 t1 R' p
* E1 I5 E( `; D) ]% p7 P
if ([trust-ok] of self)
* y) c% R# I6 y5 S" O;;
根据ij的信任度来决定是否与j进行交易[5 h0 x( `( N) g* h8 e8 a5 f
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
& a1 I0 o  ?" l7 G2 [. z, ?8 \
" e3 J  M% K. w# x1 f[
; R" U" S2 k4 q$ ?
- g, o& {$ i2 K# I
do-trade

6 w" _$ w/ s/ H
( c1 L1 d1 B9 S6 [0 `7 g0 o, u% Iupdate-credibility-ijl
4 O# _  r6 z- K% N1 Y+ m7 f- [

% t! l, x" x& Bupdate-credibility-list) g8 |1 q/ K$ b1 G
  m9 A9 x, |. ]- Y0 c9 `9 `6 a, T

& E+ o/ G( K/ C& F' ~4 vupdate-global-reputation-list

; O; W7 I  d! j5 h
6 z* I/ z4 ^, q( w% Tpoll-class
2 o' v) ^  {, t5 [! i3 r7 a! J
" O- [  I" Q2 D: d: e/ Q, d
get-color
( T$ N/ L/ f+ D- n

% l& x% V  \& T7 n]]
6 B) v5 u- @9 ]3 i; S0 Z1 S. E) Q+ r: e6 B
;;
如果所得的信任度满足条件,则进行交易
/ {0 |" t: y: p- I+ h
0 W6 ^2 x: }: n* o1 x[

/ k' y0 R9 g, {& E7 Q( ]2 v7 L3 D* O0 I7 v8 P
rt random 360
. y1 D5 H8 k4 |$ O7 I
3 ~% X2 m1 r: h+ J" F8 c/ p
fd 1

, g' a' ~3 b  L& W8 f3 o
4 @! m$ z+ {1 S]

+ h: n2 p- T! L6 M: u
9 z5 n  y3 Z1 aend

0 w8 V* n" n! p
5 m, G# D% ~: }) m' Hto do-trust 0 {( P6 ~( t5 W4 d0 V
set trust-ok False
& l  }5 G9 M) k! w/ r" V; u% a7 f3 d, b
. {2 s* D: U- D: d2 B6 x% s- a
let max-trade-times 0
3 e/ Y9 e& B& K% ^* oforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]" m, K# O' k& F* V. y" R' a; |4 O
let max-trade-money 01 @) u( m5 j8 {; N3 ?( ?% B
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
+ e5 u9 U9 }# f6 C: z9 q2 llet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
) m4 D) j! v* J8 i+ n5 \: D! a4 E2 n6 a6 ^- L

' H: U1 b# g9 |8 d$ o2 Nget-global-proportion7 E0 [' H1 t. j+ f! \" h
let trust-value
- l1 y5 t5 P4 i, v, V: n# Ulocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

" `2 q: E: [! X/ k+ _if(trust-value > trade-trust-value)
6 {- T: d% X  `3 _3 d9 q5 M0 ][set trust-ok true]! R7 l4 x9 _; y1 J' o9 a
end8 p/ m, L* K( ~  w" n

+ r. G$ m$ d. _& X- I( X! f; s% Dto get-global-proportion
8 B1 g8 F5 w1 I. w+ }+ Aifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)  l2 q7 a! \# u' a. h
[set global-proportion 0]0 g, E7 B  [, s; O
[let i 0
+ G0 m1 g9 e; Y0 hlet sum-money 09 {$ k) t4 A& W/ K% i9 {
while[ i < people], E) ^) J( }3 ~+ }6 ?
[
1 ?0 f: F2 S- I1 j6 N+ lif( length (item i
3 W4 p+ Y9 U, G: G  \/ ?[trade-record-all] of customer) > 3 )

) I; G! L* [" F9 h' [[
' r- x+ k, l2 N( v# y( uset sum-money (sum-money + item 2(item i [trade-record-all] of myself))3 R2 j  H: f2 T1 o# F
]
% e$ K/ Z+ h" w0 s( h9 `8 O]
' \. u( A/ k0 d, vlet j 0% n7 d* Z- |; h( ~/ C/ s
let note 0
. C# Q3 `# Y5 c1 ]+ M6 owhile[ j < people]% W9 L# B; l/ t4 A8 ?
[
% h* ]( ]* Q4 a3 C3 Aif( length (item i" g; e7 ~# M: x9 x8 M" H" o
[trade-record-all] of customer) > 3 )
; u4 g( H4 D! H& E% B
[
( k: D! T8 L; @! Nifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)' m6 u5 m4 L! H3 z/ v
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# g0 o1 f& }6 Q% E6 y% x# G; N[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
- @4 [5 s! C, S& N]7 b0 p' `% e# Q, ^3 ]
]
8 k& t1 K' u7 X2 `- e7 }set global-proportion note# v, e+ m' _4 U  n# L2 ^# ?
]
9 M+ C" a( h# xend3 J. x& j4 |" Z( j/ E9 ?
! A( Y6 `: O6 v
to do-trade
9 B$ T+ g4 T# R% L9 I;;
这个过程实际上是给双方作出评价的过程
* F; T8 @1 d; R" ^) O6 p& fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
& J* S' f8 U- }set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价( O2 V+ C  e% M. |- S
set trade-record-current lput(timer) trade-record-current6 p9 M$ d+ K4 R
;;
评价时间: i( v( Y/ g- @: j
ask myself [
  M. i- e& M5 n( V. L. `! X; Supdate-local-reputation
3 [9 L8 I& t+ u) rset trade-record-current lput([local-reputation] of myself) trade-record-current
6 p- F4 V& y) x' V5 C* y: R3 i  r]
+ H/ G% ~* o+ J: P9 W/ }set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
  s) `0 A+ j- q/ S. `0 C7 z& g;;
将此次交易的记录加入到trade-record-one
- r7 X6 u7 f1 D4 W; {set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)& y' l* K: E3 m5 \; b
let note (item 2 trade-record-current )! m3 f" W9 a, r% P
set trade-record-current: A: |, R' `% n- ?; F! t% C
(replace-item 2 trade-record-current (item 3 trade-record-current))

: ?; I6 f2 {: k& \set trade-record-current7 x1 y" z$ R* P- b! e. I6 r# A
(replace-item 3 trade-record-current note)9 v) S. A6 t% m1 v0 s2 M" k
( d3 J  ?3 I3 c% c5 ?, [8 d& y

! h- ~6 C/ j0 {: @) zask customer [
. _6 H7 A, g0 r& h# Pupdate-local-reputation
- m, n0 b8 g  |1 ^* |" i% R* pset trade-record-current6 N9 \) z( c, k
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

3 a# P0 `( C' T( U6 T5 {4 k7 g8 v]
2 U3 `: }( E# I7 h
: o# M! X+ A* e" W
+ q+ x4 G7 ?" u+ x" G) ]: B
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, `/ K" M6 q: |' o- U4 o8 [2 f! q* c

( r! F0 V& y/ k& g) t; T; zset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))& O' K9 i! u+ E$ c6 L" d
;;
将此次交易的记录加入到customertrade-record-all9 f/ P) ~5 J2 f, m
end* w. U+ j$ Y/ Y! \7 n9 _; }
4 \) @3 f, A3 N8 l
to update-local-reputation7 W% F. S' G, p+ Q
set [trade-record-one-len] of myself length [trade-record-one] of myself9 M! J, k) `! Q" i* r8 Q1 q! [
+ b- s. R; D. Q% L7 S7 M
$ p) Z, S+ G/ s% B0 Q. ]
;;if [trade-record-one-len] of myself > 3
6 ?; N9 F( L3 [, U7 c! d
update-neighbor-total
1 y! Z5 a- U, V' s6 P+ @" a;;
更新邻居节点的数目,在此进行
5 o5 G% \8 ~$ W( A. a, tlet i 3& V* k# F/ A$ B
let sum-time 09 C7 J* S& \+ a3 P5 ?6 I$ l" s
while[i < [trade-record-one-len] of myself]. t0 x$ h! d( U
[
! n" ~4 T; h5 G8 s$ jset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
- K$ {6 U4 ^5 i" ?set i6 O) h( y: I+ U8 R" W: _9 P9 \6 C# [$ H% P
( i + 1)

( b7 @+ X* m: b1 [$ |0 v* V]7 A5 [2 ^, ?8 M
let j 3
- G, v$ C! n4 h' Vlet sum-money 0
; e. C9 I6 q0 y+ S& o4 fwhile[j < [trade-record-one-len] of myself]* }8 r: w1 D6 M5 `1 z$ V' ~
[- I% v0 N# w0 m  J  `
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
1 x3 F, l3 m$ [8 {  s& f8 T( j  ], Zset j9 v3 t% `6 h1 g5 X
( j + 1)
( T$ J+ o: x# J7 U
]  y+ H( D+ n/ A! t: H/ w% n0 G1 L
let k 3$ {% F5 q" E; X/ c' Z0 \
let power 0) l; F: t) v  ~% p6 k
let local 07 ]6 N* Y5 s# f4 z) C) z
while [k <[trade-record-one-len] of myself]
6 ?( m7 h; D, g6 Z2 m# [1 O[
9 O5 B5 c5 P2 y( g6 Y$ m: c. gset local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) % Q; t! f5 s& ?4 r# J6 _6 }( {
set k (k + 1)" S" g% W* G7 j8 }$ V
]
( ^1 D) l* C4 `- Uset [local-reputation] of myself (local)
& S% V6 F  g$ Y5 w* |end
4 p1 W( N- C0 X6 \0 }1 F% e$ o7 [2 w) i
to update-neighbor-total
. w* S  @* S" c3 w) \! g. ^( W9 R. u1 s0 ~; {: `9 W6 Z, d
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ], Q( F4 {, {+ r; |- n: H
: U! Q) z0 I$ Q0 D
% ^8 J/ p9 Q( i5 W: d# N9 x1 m- M. S- S
end6 Y4 @$ J! Y6 X% R9 e2 q4 d# h+ [
. ]" j/ Y6 A& K' e8 o/ d6 o
to update-credibility-ijl . X% r- [; k% g. h; t
0 q9 Y( h, s$ ~# Q1 c2 p
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。; l7 d9 W& h# m
let l 04 o/ ?8 q: l) F% A& W
while[ l < people ]
. i6 \' R9 s, Z8 y& Z( }- b' [;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价6 B; q0 h# K" v$ B
[
0 o. F7 h4 N2 T& vlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)8 ]+ j2 ]  Y0 ?" A9 X
if (trade-record-one-j-l-len > 3)
# U, x/ f. X1 w! P[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one& d( c- F8 Y- Z9 d
let i 3
" I: k3 P- P6 D* y. @7 M  plet sum-time 08 \. L& N9 b& ?0 ~4 a8 L' [
while[i < trade-record-one-len]
6 x0 o" T2 ^: z  y. `' Q' e6 f/ i6 L[
6 P8 i: ~9 O3 t; wset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
  U6 V; F) q+ X/ k" v  Rset i- V# ]+ h4 o3 q( F, y$ t% L, L
( i + 1)
1 n0 J: H" n) w' y
]+ `, T8 M' J2 |( e' ~% _# {, X1 r
let credibility-i-j-l 0
0 a; s8 t; i6 r3 `$ D;;i
评价(jjl的评价)- O! Q0 R3 y% o/ N$ h: @
let j 3, g5 h& [+ [' p
let k 4
$ e/ G& n. D+ P: Y, x  U+ u  k9 X/ Vwhile[j < trade-record-one-len]1 h9 d# q1 w8 t! u; s
[
, n5 _3 o! t( ~! r. J4 jwhile [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
+ T: l+ k( O1 O) z7 A. _  Dset credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
- D, l9 g/ }0 X& _1 S9 r- `set j
5 q; @6 j# \% P5 R1 I( j + 1)

5 ^8 @: u* x5 f. ]. x# x, }]& w5 ~. [5 ^/ R. l
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
; f2 C4 ~$ m0 J- u: H& N; r2 m0 Z5 Q3 q! E+ Q- e2 k3 Q1 S
# A" T9 c" |1 L' ^2 `8 M
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
  f$ N* B6 E2 I; j% T! Y;;
及时更新il的评价质量的评价; b/ o2 T& U5 t" ~# M  _
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]7 d* g  {  ^9 U7 u' d5 L) _: w
set l (l + 1)
" \8 g3 m5 _- x- {+ x( I]
  P9 n7 F; w' }2 m+ aend* V+ M! W! d3 m" c6 {! X4 k3 K# K
' k2 b1 k# Q% j2 j! D6 q
to update-credibility-list
1 D2 Q4 L- u$ W! R2 {9 Jlet i 07 G8 [; u! }" [  A' ^; P
while[i < people]
' y( k- C( t$ }3 D1 N% A" c; _[! ?3 `4 y) n& y4 ?' d
let j 0
" J" f8 y0 J9 E- ^. t7 E! J; O" clet note 0
! u2 N4 e1 K. F4 F# [3 Olet k 0( e0 a3 d6 k; J8 a7 c
;;
计作出过评价的邻居节点的数目& Y& }6 r/ L3 F8 E/ g9 g5 ]
while[j < people]% c; I9 l2 U& s2 @  h: i+ j5 Q- d3 r
[
% o9 p. M; j: |; g6 q0 A9 k4 a6 y$ iif (item j( [credibility] of turtle (i + 1)) != -1)
5 m" Y! ]/ x) D! ?$ s. x;;
判断是否给本turtle的评价质量做出过评价的节点* N0 H# |; t+ A- |* t6 g: H( y
[set note (note + item j ([credibility]of turtle (i + 1)))
/ p+ V* _' d* c  |: U7 ]4 V, ];;*(exp (-(people - 2)))/(people - 2))]

. u1 ^4 ]/ x& i+ E# q6 U, lset k (k + 1)% w7 v3 x8 `4 ~8 P' K
]+ e( f: Y5 a# B) V( M0 O0 a/ j
set j (j + 1)
* @8 Z! a! E0 n]+ k/ x. S. {, E" Y( F
set note (note *(exp (- (1 / k)))/ k)
/ Q8 h$ w: q, d7 }  ]set credibility-list (replace-item i credibility-list note)
; c7 c8 k* R7 q9 o) K" xset i (i + 1). \+ j) G% s( M* ]) y% I1 P# I5 F! F
]% k- i4 M8 t! L$ H) r5 d% s; \
end
2 h6 t0 G; ^1 P* t7 I# ?
% A+ m' h6 Q( N. @& H8 Bto update-global-reputation-list0 o6 ?3 {0 L* }5 E
let j 0
" R/ W7 _% ?  V! K/ bwhile[j < people]  c$ n! A( S! w' X+ r( l. D
[
# f- T* p0 {2 Flet new 0
2 x/ m1 R7 R. m0 W0 C" ?;;
暂存新的一个全局声誉
8 }2 k8 F% Z5 Z* `) ~let i 0
5 R- ~' B7 t# N4 ^let sum-money 0
2 V: V) Q2 U2 mlet credibility-money 0
9 Y$ M" `2 B8 Twhile [i < people]
1 I& _9 j2 W  k$ g5 G8 k- i[8 L2 ~( g5 `2 W, E4 D1 P- ~
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
8 ~2 Y+ J7 a, F* {5 W; G& D) E1 _set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) T' c6 k9 M2 J  ~, \
set i (i + 1)
- M- z) I- z5 x5 B' k" T) S' |5 j]
) g) H  U+ o4 W3 y3 K# g; x! mlet k 0  c( a/ T& r3 V+ Z: B  x
let new1 0
7 r' r8 B' o9 P$ P2 E( b/ qwhile [k < people]
4 a1 c% D! e6 T' e( F[
. Z( B5 I' F1 B, s( Sset new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
1 j  m, _4 C. }& m% {" i' V+ ~2 Iset k (k + 1)
8 P! Y. r2 Z( x4 o% i: g7 m]' u0 q, L; G# f, u# Y
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) * K7 P6 j+ a# k: n
set global-reputation-list (replace-item j global-reputation-list new)
4 l3 ?+ H3 e3 V* v, ^6 R" Aset j (j + 1)
1 ?: a6 c# N+ V1 Y" K]
) x+ a. ~& D+ bend5 ~9 x3 ]9 T" {) y4 J* L$ H

9 {' J% l- m$ ?
2 ?2 H! j+ s, p" C& k5 `
6 R7 K& {" T) H9 B) D% h5 Pto get-color
1 f8 \6 c) |- g. E) q8 ^
5 X9 K6 _9 C6 q- m* S5 n3 W7 O% l6 ]' ?set color blue

1 q9 y& t+ v- J6 M3 Qend# c% `" f8 R$ d& A. K

6 `! }, F5 a7 e  Ito poll-class/ {) J0 j' |4 V8 w# f+ n
end6 _7 D' f2 v& Q4 @+ b
& V0 @9 `) B. _+ A' [7 d. p
to setup-plot11 [; P$ c# ]& M
7 x4 P2 T8 I/ a: n
set-current-plot "Trends-of-Local-reputation"
" C% @# y- V. f8 S0 Q9 m* P
9 ]0 v! n4 I  b: T; s6 ]; e
set-plot-x-range 0 xmax

/ E. z9 K4 ~$ ^1 R9 W* v) {- P% o( [# ?7 ]+ L  W% h, \5 s# R
set-plot-y-range 0.0 ymax
4 \/ h! z& b, Y' ~
end2 g. L* i! N! t6 Q+ a6 i. N$ y0 \( N/ |

# d; Z4 V: A; H$ Q3 a6 D& Cto setup-plot2& z* q4 g- L3 m5 x( B

$ y& g3 F  l8 W6 B# W3 j3 mset-current-plot "Trends-of-global-reputation"

  y2 k& o- o: Y/ B
% K. e) o9 z% q. ?set-plot-x-range 0 xmax
! w% ]& N6 Y- m8 S. G1 S$ T
' E+ `6 \3 c8 P0 L
set-plot-y-range 0.0 ymax

. f5 Z3 K. X' kend
* X/ d$ Y5 H! {4 `8 ^* n* M3 N
' g3 Q& M" O8 Oto setup-plot3  b$ q1 Z* |. X6 M4 I2 e
  m; I: n2 c& N. r) @1 a1 X0 q1 Y" x
set-current-plot "Trends-of-credibility"
( H! b) E* ]+ i
' Z: G: ]! W4 q/ f! [3 U2 d3 Y0 m
set-plot-x-range 0 xmax

/ f3 M; d7 t$ n+ E, ]* [
* j' \- d: x2 L& }! w+ aset-plot-y-range 0.0 ymax

/ m3 g0 d1 G4 M) D! B; }end
/ E9 D, g  K) e4 w
, x0 P+ H! u( i$ K8 D  Hto do-plots9 A- V& |( H0 p5 m: V: z
set-current-plot "Trends-of-Local-reputation"6 y& S2 `& v2 ]# g- B  v( @" S
set-current-plot-pen "Honest service"1 Y, T/ Q+ W( _' x
end
' f7 t/ {3 z3 h9 ]$ f* K# c  ]6 D# |3 \7 @( H3 L4 t
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
0 m& k" z! G6 {1 N
" `+ |- N3 J$ n4 @这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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