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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:
5 H9 y: r8 D# t" L, oto do-business ' {9 ^& H! l+ x; I$ X0 ?& Q
rt random 360, g2 M' P- X. D; }! C5 G/ G
fd 13 F- W% S; G* Z+ ]& r
ifelse(other turtles-here != nobody)[" S0 a* n, \4 o' _' w. F& c
   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.2 P, T; I$ P( c5 W
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
" V$ F$ C  r6 F   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer7 _* q- H# c8 Y1 i
   set [trade-record-one-len] of self length [trade-record-one] of self1 W0 {* f# y  _/ Z) W
   set trade-record-current( list (timer) (random money-upper-limit))
3 t  Q- ~) {) c5 a% Q2 v% ~! u/ r  }/ L* O- l9 g8 p
问题的提示如下:
- ^) x; F. K( E" ]
6 L8 V6 q9 X5 ]' ~error while turtle 50 running OF in procedure DO-BUSINESS
: Z; Z) D/ S" l9 M  called by procedure GO
6 E$ @* V( `  m/ x- U! C+ J$ lOF expected input to be a turtle agentset or turtle but got NOBODY instead.
- c7 C. A4 K! a  P
(halted running of go)
* i" j0 }. y* |0 l; v9 g8 U2 v7 }# I4 }
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~~
( j; L$ z, u3 j) A; c& H  L' }$ L, u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' W" t6 ]5 n: ?& P
globals[# x4 g5 I" b% T  |" A8 D
xmax
+ C: k' b/ {& F2 y( l$ A$ Z7 `ymax, ?+ p! Q, c; @6 \
global-reputation-list0 g" T, V5 X+ Q
# D3 P# G& u, q7 F
;;
每一个turtle的全局声誉都存在此LIST! \- o" j6 C* r- |* y
credibility-list9 e' G7 J9 \2 ?7 I
;;
每一个turtle的评价可信度3 b; w" F4 H1 Q# I1 P
honest-service
2 @3 c- Q. {4 _6 lunhonest-service
; D  ^9 F5 i) Goscillation
  M' j& O6 g  m( irand-dynamic
  T9 o3 k+ D9 m]
2 z& i0 Q! ^2 I0 K+ j1 ~6 O( V. c) v: \& \( H* z
turtles-own[
2 `3 n% p; l# ^5 c9 d0 ]trade-record-all( h' U' r' j% l6 n) O# |5 g
;;a list of lists,
trade-record-one组成! o% }* v& M! a+ M# L2 V8 S
trade-record-one
8 S  c( K0 N# ^" z# p9 q;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录- v& ~! I; R5 B- W
/ G, @1 w7 X* e( B6 L, _: A) M
;;[
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]]
. {4 g# x- m' q& w) strade-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]; z& h+ D8 W$ h, d- R+ f9 m
credibility-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list5 n! q8 r$ r6 M4 e. t- L
neighbor-total
8 ~7 W3 t; s: w  h1 };;
记录该turtle的邻居节点的数目0 I- l* B& d" R$ D, l( _0 W
trade-time
$ V4 q/ B- b  u;;
当前发生交易的turtle的交易时间
' g; g: W7 ^% W) F, rappraise-give
6 \& \1 y0 T' S;;
当前发生交易时给出的评价
. [* D1 d$ Q3 {8 Cappraise-receive  H/ v- c9 b8 {. F
;;
当前发生交易时收到的评价8 k* b# q/ F7 D: C" `, f
appraise-time: q+ K- g# d$ k: w/ L1 ?
;;
当前发生交易时的评价时间
& \. w6 K/ R: i8 d" _local-reputation-now;;此次交易后相对于对方turtle的局部声誉
1 ]% v* z' r# ~' z; ~! H% y% btrade-times-total
  o# z( X3 B7 F/ u7 [0 d+ y* }3 T6 i;;
与当前turtle的交易总次数7 z& W( C: v& m; i8 O  \: l
trade-money-total+ F3 u; X: d0 l" M* ]4 p' c( `
;;
与当前turtle的交易总金额
) s6 \% H$ F+ U7 u6 Hlocal-reputation, }' ]/ ]& s7 Q
global-reputation5 N, e! m1 V" k' `" C8 b" \
credibility& f. J1 O7 Y  T: Z6 a# L! |
;;
评价可信度,每次交易后都需要更新
$ Q3 A! @# x: N2 S! Ucredibility-all
& l# K& ?. ]; |+ K;;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
4 }  P( x& n/ v& Z  C# M+ z6 h6 ^8 z2 \: ^( r5 l8 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
0 O/ H4 R+ Z! k+ I) |, U5 xcredibility-one
4 Z- }- l9 W6 f- d# @* |  y% d0 z;;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
. C+ l. w$ l( E$ V/ Sglobal-proportion4 s9 Z7 R9 s+ n; O; d
customer! r5 k. ^5 z- G( R0 K
customer-no, @2 y2 P7 V# M
trust-ok7 r4 z' ~7 ]" s7 c( F# K$ x
trade-record-one-len;;trade-record-one的长度
  g8 ~, I4 h+ H]
3 S0 Z1 v! A3 ]$ \
4 G) g$ j1 Y& y8 F- K& _;;setup procedure
4 J8 v, c5 Z2 J! K& O  u8 ]0 W  P
to setup
8 f6 D% ?( v' M: J$ f" v1 t$ u0 L0 R9 F9 P- ?
ca
* x5 Q* N- O# D, n& i! o2 y' ~: Y
- Y2 e& f% t  F: a
initialize-settings
. }" L0 V7 ?3 S. _5 o

7 o# h9 }' ~6 L! Bcrt people [setup-turtles]
0 l* |" s" |# p7 g

, C6 E) l* g4 @6 g% Z5 m6 }# {2 Vreset-timer
! n7 `/ J' Q0 \9 w" U
) K) D& x$ d; P$ F% k
poll-class

' ?; T$ D1 L& Y) H2 B- @2 e
2 n  c0 d& T2 I0 O8 H3 D( A; n" lsetup-plots

$ n: p7 y1 D9 l8 T; n' q
1 B) D& Y7 I( R, G3 |do-plots

/ k7 D2 [2 F7 send
( R  q5 ?: P$ n/ m1 N- P
. Y$ n3 b. Q0 tto initialize-settings
' q/ A! c) a- z1 U9 t! u+ a
, M1 _$ f# W  B* D* H! N8 Yset global-reputation-list []

& G! ]- {% P5 k7 }+ E9 o
# J2 o. }, v, Z3 G$ W( Dset credibility-list n-values people [0.5]

: b! I2 g& I9 N+ b* {/ i0 G1 Y6 [- P
$ i) t! g$ O* ?set honest-service 0

" m7 a! F  b( M5 ?. d$ M& @: U, E1 \( z/ F" }" f* _) ]
set unhonest-service 0
6 U& l9 |& {: T+ ~4 j8 A' O
+ M' W1 b& W: W* l' l
set oscillation 0
% |* W6 S) j$ ~5 [

2 Q7 p5 e" Q/ |3 L+ ~& ~! l/ eset rand-dynamic 0

' g' E3 _8 c# W/ |% x& @& G5 oend
/ S, A2 V  h2 O. I$ o& O9 F
7 @% }- |% Q) b" t9 Xto setup-turtles
0 b, T6 l% R/ G7 g0 @/ R8 fset shape "person"
5 v7 p, Z' r1 w( }' Z% e7 `setxy random-xcor random-ycor
, f2 o4 s' Q( |set trade-record-one []$ J$ r4 C  c+ |0 {

! |2 U: c/ @, ]: o" w2 v/ r0 g! k" gset trade-record-all n-values people [(list (? + 1) 0 0)]
" x9 y. c: T3 _: Q; r
8 o/ A" N0 Y1 X% G" M
set trade-record-current []  d( o; D7 W9 E* A
set credibility-receive []
2 E+ ^4 S/ a% Vset local-reputation 0.5
/ L5 D" A; c; k0 a$ x& |# o3 vset neighbor-total 0
' z9 X  G" V$ F/ zset trade-times-total 0- ~3 i; A/ T! C& v3 Y2 h7 m
set trade-money-total 0% P5 q0 r1 e+ i- }3 B! D6 C
set customer nobody
7 }; W/ V8 J2 j) iset credibility-all n-values people [creat-credibility]& i2 D- W* _( p; k" R
set credibility n-values people [-1]
8 T# g4 J# x: o" Bget-color
, }+ X9 }( k" L7 w4 s4 g0 ~
/ ~  i3 U) K! Z, X/ Q1 I
end! d5 P  ]1 |$ Q3 |- F. t# S
/ E2 r. U! _8 f- ]8 w
to-report creat-credibility
( g& Q7 {& R! f# J7 n0 c" V4 I* qreport n-values people [0.5]9 S. z0 N$ E% b% p- a8 ?
end
1 @$ n2 q$ v) _6 w5 q! e. I
9 g# }7 U* _" ^3 D1 Ato setup-plots) K3 ?0 B% O: c+ b( B2 }+ y, H

  a: _' E' F7 Z% c9 Q8 Z1 i9 r* Y7 Xset xmax 30
, D! f3 e6 |! T" j7 l/ ]
6 G+ Y* w3 ]$ g% k' X: D. y1 S* k
set ymax 1.0
' ?" x+ Y4 [  P
& @+ j; |7 ?9 I& Y. i4 `$ D
clear-all-plots
5 Y4 g8 y+ {) }3 n) C& M2 s  t/ F
1 |/ A0 A0 W6 n3 G- b# R9 |
setup-plot1

1 e$ C! {+ G- o- b/ ^. o7 X/ ~9 a
6 E0 `% u2 l+ f8 l7 e. P: xsetup-plot2

: a( R1 U0 v! S* f& T) L8 t7 f. ]  O3 `5 g5 p
setup-plot3
+ [$ w6 Y; g, ^5 w) ^+ T. v! _2 F
end! j/ q$ u5 }- B  b' A# w8 A, |

' a8 F2 F% l0 ~% O4 l0 H;;run time procedures
- t, {" z4 p; u% y; s; J$ L; c/ z  R3 f' w* Z' p% G' y+ |
to go
3 ~4 e( p' `1 c: W8 |  M( a+ M
0 E) ]2 }  i; }0 D: vask turtles [do-business]

* p# B2 _; ^: ~end7 c+ \: o+ d+ K9 Q) s7 o- U
. h3 Q6 l0 L6 S; |
to do-business 6 X2 {6 {9 R8 o, e4 M4 O# H6 d/ `
( V+ D# Z; p! n0 b2 t0 L

' g6 ~, `. F% t+ ~% v& j' jrt random 360
  ]% m$ s1 w& H, k5 I) j

9 O$ B$ J& @" j9 Q" p& Cfd 1
0 p! A8 \, c% R; J/ \

0 E% w$ d7 |% ?5 t7 c; z, \( \* f$ Xifelse(other turtles-here != nobody)[
' v# h! T' r- _4 Y2 h) S
' @: _- o0 f. ]6 R/ {4 L* [) }
set customer one-of other turtles-here
( V) ?% _  g9 d3 H1 N# {

9 f+ ^# b' A+ f;; set [customer] of customer myself

, `" x6 {" f% c, y* z7 e9 o' C3 @7 h2 s$ h# d7 w' }! O2 b
set [trade-record-one] of self item (([who] of customer) - 1)
, t& `/ [5 m% n2 i[trade-record-all]of self" ?2 _7 P2 c, E1 x: S/ q/ B
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
* |! I. n: U6 S% A5 b  p0 {

% q: J; j+ W6 f- \7 Tset [trade-record-one] of customer item (([who] of self) - 1)
  P5 S) y# ?+ n9 V2 \  H# I+ W[trade-record-all]of customer
. |# r; I. L( V  A
3 t7 r8 |/ R! [
set [trade-record-one-len] of self length [trade-record-one] of self
$ P7 P- L4 P' }8 C# }( c: n/ z
6 t5 B  i+ }/ m" C5 p
set trade-record-current( list (timer) (random money-upper-limit))
. Q9 ]4 L+ G* _7 E$ B1 b1 `8 G7 @
% C) J8 S" j6 A/ ]+ y3 o
ask self [do-trust]
4 g! W$ f" ^  |8 Y  |. I;;
先求ij的信任度
8 X- Y9 w* N7 v! u) S) U! O1 x. Z1 n1 s0 t) C
if ([trust-ok] of self), J  E5 P. C; y* W7 S" q
;;
根据ij的信任度来决定是否与j进行交易[
' D. K7 d$ S- C$ v- A. aask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
# \, R( u$ X4 t% {' Q4 N# S- }- G; i. B0 C% G# w# v) }; b
[
, }  O+ C6 C' `

, h7 I% q2 }6 |  ado-trade

9 ]+ s" u- q( I$ p2 n) Q0 C' E& D4 u5 a
update-credibility-ijl

/ l; W+ f7 Y; N# c' P* H& X: g7 o
update-credibility-list
0 h2 Y8 h2 a+ a( L' J

! O! _* H/ x& G& {' Y; {) q7 y8 I0 j! p4 u( q) V
update-global-reputation-list

# H- h" i6 |$ F# q" D# ^; K) O; Y% z- V; s" _6 M
poll-class
' u& @4 v. t3 n9 [! d0 n
% k1 o! w% O: T9 \- Z0 T
get-color
) S- x2 C8 U4 r# S
9 g# o9 r& E4 x) H  r
]]
2 V% F1 C' x+ q$ x
" N$ z- O( I" d0 ?;;
如果所得的信任度满足条件,则进行交易: s" p0 J" E2 A0 F1 [/ j7 H

/ d; A, v$ o3 n8 I* s; }- D: W" t[
% U  ~* u7 G8 }

8 \- Q; ^4 ]$ \- Frt random 360
8 T# F& b; w1 b* e

# U- H, Q( U0 ?: _5 pfd 1

; X( X% ~% ?& m
. f) @9 \3 H% {! ?' c3 R]

6 W6 E. x3 n) j6 [" L
6 ?2 D8 o9 O- n3 }# send

! P# U( E2 i, d9 R" n  @- r0 T8 P* A. q: i
to do-trust 8 r* u0 a1 i" f0 x; L0 k; m% z4 g: D% V
set trust-ok False
; Q% y! l! Y; m; M) l" u( t% A( K$ e8 [- c: L$ {
1 i/ |( ^. c. [1 G+ c
let max-trade-times 0
7 f% d* N2 n/ {; K% Uforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]# s1 J7 ]9 ~4 l
let max-trade-money 0
. p* S. }6 g- d& Vforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]1 q$ R6 G" [, j. Y) x  K
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))) B' M  X- J( j& x! e6 o

* l( @- u8 U; e9 u0 W' y
/ I$ y9 Q9 `2 v
get-global-proportion" b: s: t2 I1 L7 K
let trust-value
- u/ j9 x- ~6 Z' b1 Zlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
/ j( F0 r) f; B+ Q
if(trust-value > trade-trust-value)5 l2 x* Y- y% M2 G
[set trust-ok true]9 @: j0 m6 d9 ?3 S" U: O/ j8 x
end
# X, E3 A) V* L  x# |
1 T) K+ I5 `: H. A* Qto get-global-proportion
2 Q. Q; _0 X- P# C! R4 V) \2 @0 nifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
1 g- o- k3 N4 Z[set global-proportion 0]
! p- r4 p3 J) P) t4 S4 c[let i 0
4 g! ?6 ?8 T7 T8 R. X. G. B: g# b5 ?let sum-money 0
2 f3 h  l' b& d- U. w0 M0 v. twhile[ i < people]  \/ ]: m& W3 y+ {7 r. w
[# {. }" w! [$ i+ {9 Q5 l/ S1 G
if( length (item i
7 u9 {$ H' ]' C2 o; V3 U. o[trade-record-all] of customer) > 3 )
' e/ s) o0 ?' R& e' @6 p0 j- l7 @/ A0 S3 g0 _
[( c/ V+ ]4 t% F; Z5 X$ ~
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))4 _3 G9 u6 i( j5 J5 k' n
]
2 r/ V9 N8 _9 G6 J3 b9 \, z7 ]]  Q0 k7 y; N( c" ^7 v
let j 0* Q4 K* g/ {: z& n/ P& m- @5 ^
let note 0- `8 ?0 T2 t# F, y! W! t. r/ D
while[ j < people]
- i3 q0 b* L8 a# y[
/ h7 l8 H# S8 Z7 y0 ^4 {' i+ Pif( length (item i; D& V& o( P# ]% n1 L
[trade-record-all] of customer) > 3 )

( W7 c3 e4 H/ g7 Z- F[& N. j8 |* K, P
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)8 e% Q  l/ k2 W4 ?- f! F
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
! |( D' r/ N& |% O4 a[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
, \! l! X- u3 z4 Z$ G" X$ d- `]: ~: y# s/ \0 g) Z% P# z, m
]
/ ^2 i/ f6 w9 P: W$ Tset global-proportion note7 K, d9 F  t; ]/ ]9 e4 S* Q4 e
]
# u) G' ~% G9 vend8 h. c% H1 U# V1 m) T& u# Y

) D( @1 y& f+ h; z4 x) x" e5 ]to do-trade$ y# o, O7 {, k
;;
这个过程实际上是给双方作出评价的过程
, ^2 X* M" W8 z* c/ @set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价+ J% b( R$ ]  j( T5 g; n
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价6 a- V3 x( l; J7 ^
set trade-record-current lput(timer) trade-record-current
# V/ `) Y* h& F5 @2 R( v;;
评价时间2 E$ X+ |. k! F, E, H
ask myself [+ N4 p& }- W+ w  k/ ]5 Q; q$ C
update-local-reputation1 f6 r. v7 L7 c9 C6 }8 R
set trade-record-current lput([local-reputation] of myself) trade-record-current8 ^& O6 b6 z( B. A2 {
]
5 T2 ^$ ?- H) ^7 q- Y$ x0 v: qset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself: k7 R) x- i) T2 c: C# J
;;
将此次交易的记录加入到trade-record-one% j2 w6 ~; M5 F) k0 b' a
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
" `+ u- S. ^; V6 q( k! o& Z* E% glet note (item 2 trade-record-current )
8 J! _6 O9 T% f8 p, Hset trade-record-current
0 ?; ]! e' ]) y; V9 F(replace-item 2 trade-record-current (item 3 trade-record-current))

) g8 J+ U, b* t' {, M, C. kset trade-record-current) e9 t' ^. l, v$ e- l2 r
(replace-item 3 trade-record-current note)
6 L. G$ I3 S. D$ ~5 l& }9 w* `6 ]" k0 E9 t

8 C7 S; O& S/ {. C3 task customer [+ L1 ?2 q" E; J. M* d/ B4 {
update-local-reputation
; Y% x" N" d' d: r4 Yset trade-record-current
8 Z- z! ~( z% U0 ^(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

) x5 |$ y" F- _" a' N4 j]! O8 F) k% M' ^) ]5 y  ^( Q5 S' O

1 W- U9 {: b: i5 t
7 E% ^, i, ~. H9 V! o4 M! @
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, C5 {! Z0 `4 ]3 ?/ h* x# v# m

& ~. q) P2 _( S: U  @  y# rset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
' x  J& H6 O( t( h% ];;
将此次交易的记录加入到customertrade-record-all1 a1 b5 o+ ]+ C6 W( l0 a6 e- C2 P
end
7 [" v, y- w2 V3 b! x: z7 q* w5 R7 F: Z, N0 B( \
to update-local-reputation
0 X) n7 t7 N4 a: d5 P2 S; }& K: Oset [trade-record-one-len] of myself length [trade-record-one] of myself+ m' H4 {! c, Y; D; e

0 m9 P8 V3 Z% e# F. V" }+ e& Z4 n7 k/ @- `0 f5 l- F
;;if [trade-record-one-len] of myself > 3
$ r, F  {. W8 q0 p  \& F0 H
update-neighbor-total
% j+ y, A, l* Q/ P( z: X0 O7 B;;
更新邻居节点的数目,在此进行9 q0 V# c: T6 D0 r3 O- J/ L) n
let i 3# Q; y! T' O- N, ^0 V
let sum-time 0+ y% S8 e- `' }) I" }
while[i < [trade-record-one-len] of myself]! j+ J: ~8 z7 S& a3 f
[/ g+ }. b6 e, U4 z0 L) t
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
4 j( l  H$ I! Kset i
" M5 \; o* L# ?+ @& ~( i + 1)
% g" {3 X" X" F7 `. N
]& I. Y% W( k! E1 H( I4 o0 d& q
let j 3
" v( I" w8 d4 s! m0 D  }0 T* J% Llet sum-money 0
' d, W1 H) }- U* z; dwhile[j < [trade-record-one-len] of myself]
  T: E+ s# w' V3 o! D[' h5 w+ j9 f" g- B
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)
/ R6 i) j( v( @3 q; t* Q0 wset j
6 A; c8 h1 n" P8 F( j + 1)

. v% f) r, C" K]4 d* W4 ]$ Z4 ]. |: \
let k 3, Z- z' f1 g4 ^$ ]+ ^& X4 g7 {5 Y
let power 0
8 h. A+ f! n6 F; D7 |, rlet local 0
5 G% \/ a- T3 P: N; wwhile [k <[trade-record-one-len] of myself]
7 X) k3 u/ K+ A) r! S' T[' H; f) u! U# ^
set 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)
0 e+ H5 |9 Z5 F  U, X  ?1 |/ j0 Gset k (k + 1)7 J4 f3 B6 h6 Q+ |
]
6 |- X/ w3 G# d; x' e% tset [local-reputation] of myself (local)8 p+ t8 |9 R: @
end
( `: z) j7 o( q$ C: z' q: t3 g& m  K7 P7 U% G2 r
to update-neighbor-total
# N. z$ v/ ?9 ]' @+ v" u5 J. H' \% O! T* u4 ]$ n/ H
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]/ H) |2 l/ ^. S! q' N) y& O
3 z1 S) w, ]% [; p4 y' a
$ O/ G% m! ?/ A3 ^
end
+ ^2 Q7 E+ C' w6 |# `: e& y. T) i! }' f
to update-credibility-ijl
( x, Q4 C' p  {  \7 z+ P0 A2 e9 C) Z0 B4 z, O! t" ?
;;
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。
$ g2 v, _8 s# q' S# t' Blet l 0& x- A, n% J0 n9 w; x. T
while[ l < people ]; m9 ~+ T1 X) `6 p1 b2 }
;;
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% y! E" P$ t+ j# F3 ]* ]
[6 h& r; c4 Q4 q; f" [* P* P9 \3 v3 g
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)" x' d+ d2 b2 B" {( l% ~" s
if (trade-record-one-j-l-len > 3)
- j7 K( r* J  V2 Q' S* }[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-one8 l# l$ I! b. L0 N6 Q! k
let i 3
: F9 D) K  R. i% u$ L) Klet sum-time 0$ A/ M6 T% b8 V5 r0 Z
while[i < trade-record-one-len]
3 n& I0 _: b- i1 q[' z- ?6 y7 x: ~, A/ Z  w) _( J7 B3 E
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )$ R- v& p0 w: y) P+ k  S0 M
set i
+ i. j0 R  l6 L" j( i + 1)

) L" s! f& F: I  A! C( }# I5 _]
" M. ^$ x2 j' Tlet credibility-i-j-l 0- W/ f, W8 p0 P* ~: {- Z
;;i
评价(jjl的评价)- g, `3 f8 ]: J( O% d
let j 3
0 ^1 t6 C$ n* Y5 I/ f/ X' n, K. zlet k 46 y7 `$ t% y- @! B7 w
while[j < trade-record-one-len]
* F7 m8 t/ X- U, }[9 e5 ]5 w  F- c* x6 r
while [((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- N% S5 F0 l1 ~2 G( ^: {. o% N; O
set 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)
, t. E4 l- ~4 V$ y6 a9 hset j
7 Z% E* R4 n2 [3 a( j + 1)
2 {% K& I1 [8 h* Z/ H- O
]5 x$ v8 C& V4 p; @
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 ))
4 W3 u, p1 j" G0 |7 [$ z! R( w* _
8 S' L8 l, `( x! k& k  v( v$ y
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
6 a! `2 h/ S0 ^/ }( J3 I+ S;;
及时更新il的评价质量的评价3 s/ m  s/ C. K
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]& o2 B& J' C& O. F4 A: l
set l (l + 1)7 W8 o. z$ N$ \9 x8 ~: s
]
$ O. u: p* ?% Y+ h9 iend
2 P$ F; b: o( ^' C! I5 K! g; K, P
to update-credibility-list
, p2 n# ~5 t. O" C8 w8 hlet i 0
' k" Y, s' b+ N# P9 I; ]while[i < people]
. x: Z" z3 P$ C& W[- R8 k6 u: ?( n0 }& v4 X. v6 @* Y8 f5 r
let j 0
* H- [1 C7 b# m; n- Clet note 00 @) u( C4 t, p5 d! M3 ^
let k 0( i4 L" i" Z& v& H3 [# ^
;;
计作出过评价的邻居节点的数目
3 ?6 @+ X8 E1 U7 Qwhile[j < people]5 t" _7 Q# V6 _  I
[
' K) x' \  X  _. h. [if (item j( [credibility] of turtle (i + 1)) != -1)
5 F, X1 m- d) ~$ I  m;;
判断是否给本turtle的评价质量做出过评价的节点
$ s) b+ u* F0 z2 j$ W1 L! n  Y9 K[set note (note + item j ([credibility]of turtle (i + 1)))
4 |" x+ e' Q  D% c;;*(exp (-(people - 2)))/(people - 2))]
2 w- U; ?1 c+ [6 I( `
set k (k + 1)( a4 l5 w% T- f) s0 O- Y8 ]+ K
]2 t% ]+ J+ Z& j) o9 ?8 r1 J# z
set j (j + 1)
6 N% g$ V  N) z9 N! c5 M8 D) `* S]6 z8 G4 t4 @2 o4 A" Q
set note (note *(exp (- (1 / k)))/ k)1 F4 i' q. k- A7 o* M
set credibility-list (replace-item i credibility-list note)
' ^$ W# k, ?# @& [set i (i + 1)
6 Z+ ~2 \  k4 |% W  }]
% z9 X- w- s8 ]7 ^1 F7 m  R/ y! Rend# U. P/ r' v8 E' }# K( b

/ |" b2 m1 f% g( u  Fto update-global-reputation-list
3 h& @0 i3 G: r- |( g7 Q9 f; p* Blet j 0
, j' m* i# ^9 U! P) C, swhile[j < people]: v' @; u, ]+ \; G2 C
[
$ x. e7 k# _! ?7 w# Y6 n4 wlet new 09 K  ]' G9 s$ R$ M- @" y7 k% Z
;;
暂存新的一个全局声誉
/ `1 T  o) `3 N! V9 Slet i 0
4 d! ]8 j+ @. [) M4 S9 B% Dlet sum-money 0
2 _% p( `  A& Hlet credibility-money 0
+ g: ^. S2 t6 K  p5 H) p. y9 J8 rwhile [i < people]
8 l; k' F. h5 |5 |& b! _[
; v! n9 a2 {& w8 M) g+ E3 Wset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))6 d) a9 x5 K$ e! X
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
, u5 f9 e0 ^; l7 Pset i (i + 1)* E- |$ Z2 f( ^5 L! E8 u
]2 m3 A6 H; Y: A, b
let k 0
5 U+ o- s/ t: W& ]* H$ ]5 Ylet new1 0$ R2 e# |, p  ?: p! c" S# P- x! r
while [k < people]
& H. u$ E" D3 n- t) H5 d# n) Q[
. S1 }* K5 B+ \: g4 @& E5 z6 zset 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 _7 x0 W" v  k% h
set k (k + 1)5 S, T5 U' G! c- Z
]
0 u' a! F3 T, cset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) / Z: V1 h! }3 m
set global-reputation-list (replace-item j global-reputation-list new)4 K# S! |/ q: O- m9 r" y3 Q6 V; w- A! ~
set j (j + 1); a& T9 T$ v6 Q3 O0 V
]
( d- {1 D- ]7 v: U9 I- H" nend
2 b7 N4 n+ ~, f5 V& l% ^$ ^4 m" Q: L8 ]* N' `3 D$ n
& M, K3 Z3 u/ q4 y
$ F( s' F4 A! \7 I
to get-color/ Q! O( Q7 S- G  X! n% K! x
+ Q' b% d1 @8 {
set color blue

1 S6 N. L; |/ Z8 w! K' [end
% w9 [! a7 e+ C: a1 N- ?# O/ F7 ?/ Q- G5 J: l3 _
to poll-class
: C  E4 h+ O# S# y" yend7 ^. o- C. d1 S; V

. Y) Q5 ?. h4 ~% {0 I0 c* Nto setup-plot12 G$ o% b. _# w% a3 W& Z7 e& w/ y
9 V4 c  ~" `) P1 a
set-current-plot "Trends-of-Local-reputation"
( D4 w4 E9 Q2 S- [% m- N* N, c5 y

1 l, _1 d+ x# h/ ?- rset-plot-x-range 0 xmax

- W* y0 {& k, V6 ]% u" X" |0 j; o+ E# x
set-plot-y-range 0.0 ymax
7 o5 M( ~8 U& R; f# h
end
  l. g5 J, i2 X6 H: B( s% |9 ~% y5 D2 f8 g
to setup-plot2
- v9 G+ S9 f( i+ d$ B& h* f6 G, ?( Q3 T
set-current-plot "Trends-of-global-reputation"
* b9 V! t3 }1 a/ V- C/ w
: H9 ?! D8 c. [) G  O& s1 r
set-plot-x-range 0 xmax
; z% \- F2 {5 j$ e: J

! I7 M& l8 n/ a7 L9 ?. T. bset-plot-y-range 0.0 ymax
# K7 E- d+ @8 c  g' z
end! ^- r# Y# {$ M$ e6 v0 k4 c
2 Z8 x/ h# s3 {8 I" @) E$ ]
to setup-plot31 d, a. g  _7 _. i6 k

0 S2 c' v5 \# Fset-current-plot "Trends-of-credibility"

  {$ W9 _# u3 B! R/ a2 R. d- m8 ^8 h$ X
set-plot-x-range 0 xmax

. }$ G( @2 S: V: L$ X+ ]
2 }# l3 L# `" Z: t# xset-plot-y-range 0.0 ymax
* C  ^1 Y" z/ n$ m2 G& O5 Q
end; R! p5 J* ?* t+ Y+ y

8 \8 \$ n; [8 U* \; D+ x. eto do-plots: ]7 J8 V2 g; y0 O- d# q1 g" y- l
set-current-plot "Trends-of-Local-reputation"
  m! g* |+ I. Q7 Nset-current-plot-pen "Honest service"/ Y% l( l, [) x! _6 c
end
" k8 F$ T: j4 W3 f3 L9 B
! f1 x" y: |) R$ r[ 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.
: a. T( E! {  r/ |  r8 R) f2 K) R9 G/ N$ m) i) z9 M
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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