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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:$ b1 I2 k  z+ `! x: ?
to do-business / [6 d5 n- ~2 |% n. P
rt random 3609 [- z; K# H# y5 r
fd 1
' _# E! D# [9 W6 a' {, s  f9 \" E ifelse(other turtles-here != nobody)[- s# l6 N7 ^9 A" C( }! 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.
7 F2 X- g! s7 v: ^: h   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    " @; ?2 K$ Z* P- M# U& n
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
, q2 p- {2 k# R, k3 j. u' W& _7 S   set [trade-record-one-len] of self length [trade-record-one] of self
" Q+ G! ?0 [! x. `- W   set trade-record-current( list (timer) (random money-upper-limit))
; ?1 e- {: G8 J* @
2 _% u0 f: ]- K5 m; N3 y问题的提示如下:
2 }8 I, g) w/ _: j( [6 Z+ E/ ]7 l, ~. X* c! Q- X+ J" z
error while turtle 50 running OF in procedure DO-BUSINESS4 a6 ~7 J0 t+ O: W1 |8 t" l
  called by procedure GO, }6 v/ K. W' f& i5 A8 {8 ?0 B7 A% j
OF expected input to be a turtle agentset or turtle but got NOBODY instead." w% x4 i/ _3 R# R( @. Q
(halted running of go): m0 Q4 o# A! M

, g* f8 j% M- C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~~
3 k, R5 S" c/ d2 t( R% s# u1 d) O% s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
( |7 Z6 w8 s4 aglobals[1 n+ j% O- p8 G
xmax9 ?: \* \9 r3 V5 ]" S
ymax
8 A# [9 u$ |* K( Iglobal-reputation-list- \# U  i: A& N
. a' n( e  O* @& P- u6 e, z4 l
;;
每一个turtle的全局声誉都存在此LIST
+ ?/ H0 r/ Z% xcredibility-list7 C$ E* w. s( O
;;
每一个turtle的评价可信度' I0 r. B  h! H
honest-service/ @% C, t$ ^- @; j) A
unhonest-service; W$ i  V  d9 t3 @& \. h9 L5 s
oscillation& Y, t7 @  A0 h* {6 C6 d
rand-dynamic
; d, W/ |) V: L; \3 H% P9 z# M]
& ?2 t5 v  y% m: `
  L/ N3 p( h6 Nturtles-own[' m3 K9 s5 Q! _6 K3 Q
trade-record-all1 \- U& \- N$ z
;;a list of lists,
trade-record-one组成1 _: j" \: P6 x+ `7 @: _
trade-record-one
1 [, Z, U, s+ l6 x;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
5 u9 g: @0 s  m2 Y$ o& G
# Z6 m5 L( N4 W;;[
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]]% y4 {. W4 O) Y$ m! H  L9 n
trade-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]
- M% J# ^, }5 Y( q3 C& Tcredibility-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* a* i1 x* [. E3 l- C2 T, ~
neighbor-total
" ]( b6 ~# ]$ ?! l1 J;;
记录该turtle的邻居节点的数目
. O; r6 A, N+ ^2 r/ s1 @trade-time
5 B% Q5 X! C! ~3 ?;;
当前发生交易的turtle的交易时间4 b+ Q; s2 q, i0 o. A$ m' {
appraise-give
* H. Q; G* y" p& i;;
当前发生交易时给出的评价
, B) ~+ n0 P" `1 R& Gappraise-receive$ g/ A9 u( i9 G1 v. f" P% j
;;
当前发生交易时收到的评价9 Q3 u4 v5 Q! B5 n% D1 w9 J8 M
appraise-time* C3 S* S/ j' J
;;
当前发生交易时的评价时间  _3 _/ {- r0 ^8 C' H
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
& N7 W9 F  l7 b  N- c' strade-times-total+ Y. Q) O4 C$ E; p/ {3 d( U. H4 c$ h  l
;;
与当前turtle的交易总次数
3 T" _& {* {. _: E( Jtrade-money-total
: x# a) L! b9 y6 N9 j; a8 r2 e;;
与当前turtle的交易总金额3 j: y' q$ b& T. y. ?; Q; ]* a
local-reputation$ c) ?/ X, v- O" p5 e
global-reputation* I2 I2 l# i3 i* i6 ^
credibility- p1 b! J6 l# C% b3 M
;;
评价可信度,每次交易后都需要更新
0 p) x4 D2 L! M- m$ A) ecredibility-all1 w" ^2 b3 T) c! }7 |% s4 a
;;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
2 R7 M0 b7 \/ z
/ i8 w+ h6 R7 G. y- x7 c;;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0.51 v! G% |. S) \0 E4 j! x
credibility-one
$ h$ l5 [% ^; E) {1 i3 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people5 U2 e# J' i6 `2 w* n" M/ H
global-proportion
) a, a, \, u/ h$ k2 Mcustomer, X/ [6 a4 s& G
customer-no$ k7 n4 D! v' ~* b/ w% V  r
trust-ok# i: |6 A( n5 l
trade-record-one-len;;trade-record-one的长度
7 E6 w! h" F% |# s4 l/ z]( r$ N$ P' p# R( g6 z- Z5 c4 {( E( v: C

( ~# i" ?: J2 S' y% K;;setup procedure) W& |. n5 `1 _: [& A

. C5 K9 `% C$ g" v8 rto setup, I  K% J2 J4 y, K- p

, g: q, a( \8 F, Xca
/ a) V: f7 X% A$ F5 U" g
+ G: z( v6 y& ^8 r" o; H2 x. X
initialize-settings
! ^" p5 X" X, r# Y8 b) t
8 L! q$ [  x/ v( I
crt people [setup-turtles]

! S5 j0 F- l' [) S' g' `+ n1 ?/ x; w% X4 G$ w
reset-timer
4 ^# A+ P" \$ F2 j: G, c  U  l' e- W2 K

9 O7 [$ \: m' q* Z* _poll-class

8 N; k% s0 ~3 s" T4 i- b4 g. A/ b
- b4 i7 G9 E7 ?# Isetup-plots

% b$ O% z( p6 d5 H4 H. m) F; t/ {* R9 `0 l
do-plots
( ]! y; S, Z! N# {
end6 l5 Q# x3 a: J% q# j' ]6 H
4 y. q: a( Q+ R; F! o% o
to initialize-settings
8 ?2 z! x+ q: F! Z8 f  h! y5 ?0 E/ _% j* ?$ u# m) {2 G
set global-reputation-list []

0 b# i+ Z# k* d9 W. {
; |: Q$ c# X/ ]* R; s" y) J. Sset credibility-list n-values people [0.5]
. l: c  i, U- @% r8 V2 q
; g, h0 z  i0 D& b' S3 Z$ Y* E1 J' E. U
set honest-service 0

' G5 Y3 j9 p: z0 l
  f9 ]8 p) {! Z6 V7 N0 B/ [set unhonest-service 0

8 U8 D7 H) S& T
: q$ o, X3 c0 s4 ]$ [5 X' x; Lset oscillation 0

( a! D% _* C; U! r9 }+ G2 Z1 J6 G% e
  N- A! G" ?! y; A( @set rand-dynamic 0
$ \9 p. l4 T5 o
end
4 O- f# S& @2 p" {8 F: e0 F; f1 b1 ?, @+ P) e3 D
to setup-turtles % G3 v/ f: x3 g2 }
set shape "person"
: ?" u+ @5 n9 R; c1 L$ Y/ nsetxy random-xcor random-ycor
9 n9 ]/ H& C1 T8 q% V3 ^9 oset trade-record-one []
% v6 s  O! d& Y$ q6 b
- K1 d! S4 l' K' \( x4 k7 A& |% n* o# g
set trade-record-all n-values people [(list (? + 1) 0 0)] 1 T* P$ X& x3 s+ B+ {

9 J/ i+ v, I& u1 H# P/ zset trade-record-current []
4 N3 o  d8 L2 y* ~6 ~$ s  y) C# kset credibility-receive []
; }* B( q& K) }( @" u; H. Xset local-reputation 0.5
8 _$ T. k& G6 {  n) g: C2 ?set neighbor-total 0" o" T. H1 @4 C5 ~
set trade-times-total 0
) {( j0 |8 B9 g2 Eset trade-money-total 0! P' T5 p% B. ^
set customer nobody* @9 n! H0 A6 I( y: k$ ]
set credibility-all n-values people [creat-credibility]$ A, k7 G3 b: d8 F- x7 ?3 w% d$ @
set credibility n-values people [-1]
- U6 D4 I. j( j0 v( d# p( Sget-color# u) k! }. }) b* \& C5 T9 P- }
; H2 i' B, C/ f) \- e; Y
end
6 a5 g* z% H( e0 M- f" i3 G
" q5 W5 x+ x  _# F" vto-report creat-credibility; h! p8 Y' m! s3 l$ y* o, [
report n-values people [0.5]
1 {' F2 c/ `" G4 v/ K3 e9 pend; T; S- h& S6 L) L7 M1 i9 b1 c

! E2 j0 G$ R' b7 B1 v! M: H, dto setup-plots
  Q& O6 Q" V6 e6 _( t% m' \& o0 g3 z
set xmax 30
9 I+ h) ^, Z$ R+ c6 b3 B$ X# g7 Q

) \; g4 I# m$ C8 H$ yset ymax 1.0
+ B1 R' D! T  b3 ], k$ [5 a" _
, d2 _0 s: |  f6 l9 D& s+ M' ?& [( n
clear-all-plots
* g' W4 v6 V) X2 I

2 b# G+ f% a  L' Q; h. O) osetup-plot1

7 y: t4 D( N8 r, O4 C4 F7 u& c$ B' y0 Z6 Y
setup-plot2

) G% Q7 O9 a1 z9 l( y  _5 ^4 @- k# ^: w5 b$ }( @5 c
setup-plot3
8 D/ _; D* b$ p& N' @- {" c. u
end
8 i+ @2 j7 i  ]5 u9 F( C% u& R5 X% M& W/ O- l7 K) {1 K0 \
;;run time procedures' ^1 D" @0 j# a  j+ a

, |  @5 P- {1 gto go
) M/ g6 o  f2 N6 k- d$ f+ C% y# G- ^! X! A4 w
ask turtles [do-business]
6 W, B& M3 N( K+ z' E
end- x" g! c# S) e/ ?  z. e
" h: Q8 }6 x- x; A! c
to do-business & n7 R  ?! ]/ n

3 D- ^" A7 g9 o: q; ]% I9 i1 h" V
1 u; _7 T" U( Z/ M# |rt random 360
7 L% \6 s& |" w8 Q3 i

. v1 ~7 `( w  w- n% u/ a5 ^; o6 Ifd 1

4 j: N6 O1 O) S) Q# F) x$ E, M" s7 E! Q" B& f
ifelse(other turtles-here != nobody)[

1 h5 j: n  \3 ~! J  p! p; M" |# W8 e1 ]# }7 p6 x; v3 J9 K% X
set customer one-of other turtles-here
7 Y0 n9 _0 Y' G( I. Z; u
, E: h. s6 ^/ y# j  J
;; set [customer] of customer myself

2 @2 p4 {# r2 F- y( h. v. H& g$ A& J9 I4 [- R! N
set [trade-record-one] of self item (([who] of customer) - 1)2 c7 M5 E( C; h' I3 d0 Y, `( i
[trade-record-all]of self
! Q2 L1 u+ Z5 F7 {% P;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
! w" X. W$ S& V% i6 H& x: T8 }
  E4 @3 ?- K2 N: m! D
set [trade-record-one] of customer item (([who] of self) - 1)% L  n2 j% J: [7 }/ _  K( M
[trade-record-all]of customer
/ z* m" M, `# V6 Q) [+ X

  `+ M4 J" {0 D- uset [trade-record-one-len] of self length [trade-record-one] of self

5 a+ {+ K; w; W' y! V, s7 }% M2 z
+ W; Y7 q; \& G) eset trade-record-current( list (timer) (random money-upper-limit))
8 A; y6 m/ b1 @: u: o6 I1 O
( H( l- w8 B. u0 k& n! t" y
ask self [do-trust]
6 S8 L2 k0 X) p" D% k6 ?, V;;
先求ij的信任度
8 T# l* i- t0 i
4 h" D; W- z& T' Xif ([trust-ok] of self)
: w% F, m# \% ]  U; Z' ^. Q;;
根据ij的信任度来决定是否与j进行交易[
2 N( u8 r; k8 i7 |3 Eask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself3 c; u5 i; u/ K- M( S
+ a; S: C5 x* \0 M
[
: _- s; l6 f. {3 h9 x' ~. _

, q. e; O' B+ {- z. C) rdo-trade

. B4 {* F8 V( f& ]  [- r: X/ R1 C0 p) X% H  o9 t
update-credibility-ijl

3 p, O) G9 `. x' m6 H3 X+ T; p4 L& V0 k
update-credibility-list
! ?- V1 a3 N5 B* q! U

, w: r. G- q# `/ n
1 Y/ t& z' r* L# g, Y' j  B+ oupdate-global-reputation-list

/ Y' |3 Y) X4 ]* e8 E% ~1 Y8 P+ h  \+ ^5 j& u  l, t1 q3 {2 C8 C. l
poll-class
4 ]4 o- ]; V0 N/ p" D" k& X

$ [6 O( K! h5 Hget-color
) X( o' |, @# u  g

) m0 j2 x  L( f]]2 s$ S# Y3 @; [; T3 A: z% E  m
- e+ P6 q: {6 q; ~
;;
如果所得的信任度满足条件,则进行交易
1 r+ H* M2 P. _; T" O3 R' q
8 r/ A9 o& q1 s1 B$ v[
' X* X" }" H8 {8 |9 H

0 U8 D/ I' T- @8 d: w8 ]  ^rt random 360
- w4 p! k4 Z0 V3 A7 ?
/ T2 h- G# a5 J' {- W
fd 1
! Y0 O' o* X! F1 W; y/ m0 z7 A; E6 G

' p* w, e" m; F]
- j1 R( c. ]/ ?) D: s  {7 F" l1 K
$ [% C5 E/ ]: n  q- N
end

: V, F- T+ ?' o( B" B& I0 I" x- L" `; V) n4 E0 j" t& w
to do-trust 0 ~; ^5 s3 R4 P: ?0 u0 F6 C7 c: }/ s
set trust-ok False. e6 @- M* L" N" b
) x1 c* `# ~* d- m

0 r! h' F9 V* |7 e5 j5 |* i- |let max-trade-times 0
) G/ ^* K/ M9 S" Eforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]% C, C: `( N' n5 z. H9 Y* p3 l% a
let max-trade-money 05 A" {. o) S$ g- S8 g2 O
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]0 Z/ A; r" |1 S8 ~+ n
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# n- B& j  i% Y" o6 m# `( X- }7 t8 i- Y
. S1 K7 M8 w8 q6 G
get-global-proportion1 _: a. Q* s% [
let trust-value' n; b; ]: r4 q: Y+ D5 A
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
" R4 j3 D  B3 t1 C) @* b
if(trust-value > trade-trust-value)
  I- M, M' Y6 o, F: I& Q[set trust-ok true]) r3 b9 I  `/ b/ {& M
end) z0 k- H0 R" Y" m" x8 S& J
+ s" g! q& q. w4 e! O9 P6 `+ ^
to get-global-proportion
8 [7 N( \1 i* p+ Cifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
, l+ t" R9 m7 J/ w. S9 w" I9 z[set global-proportion 0]( U: u7 [; l; \% x
[let i 0
& j- `- S  r* `, ^) Llet sum-money 0
& w  G6 [, Z* H+ f' awhile[ i < people]
) C3 [8 Z5 t# k% N( v  `[
% {- U" j( c# z4 M; @2 y- \# Bif( length (item i
$ d! b5 R* ~* v% }! N+ N3 Q; \[trade-record-all] of customer) > 3 )

4 H$ K, w+ ?8 u1 R2 g4 {! ^8 `/ b7 r[
- Q2 F: O* e6 z# |0 Mset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
1 o: U+ L% t' E3 S6 v* Y7 j) i]
( S2 x$ L5 V8 \" a7 M]
) g1 U/ p1 P2 H$ V: X9 V# @. u3 |! x9 Xlet j 08 N/ \/ ~% f) S
let note 0  ~; f1 g3 b% m: W0 |' e9 v
while[ j < people]& |- ^: S( x) X
[% p+ X5 A# Y; e/ I" n
if( length (item i
/ |5 e8 F2 ^7 F2 m& E[trade-record-all] of customer) > 3 )

% Y( q7 t- b4 c3 T[' ^3 K: H9 `$ I. q. e# S
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
+ P5 g* e! J2 v[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]( j, H& C! G; i7 W7 [6 g
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ d& |9 R1 i" U]% H% p. C8 @: W. \$ y; n
]
  ^! Q$ F& M* vset global-proportion note
  }) m. ^+ q3 `7 q]
, O3 m: P3 |) B0 C$ ~5 u- y( _end
5 q( ?7 f: {6 i3 s5 U/ L
' P4 Z, j5 S9 W) u, c+ t/ Zto do-trade/ x0 i( N/ O/ {5 O# d" k, L0 @
;;
这个过程实际上是给双方作出评价的过程
6 M6 y6 B. p- y* Gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价* x7 H2 c" {+ e3 B+ ^! L' o' J& V
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价  a% W/ @4 f) K5 y
set trade-record-current lput(timer) trade-record-current
; i( @+ ?' x, z( ]$ _( P9 n;;
评价时间
8 Y$ X" p' V5 a& c1 b6 Iask myself [
) @1 @$ c& H3 o$ i- R0 `& e1 [0 W) [update-local-reputation4 F2 G) k  X( p0 N% [, c, T: o
set trade-record-current lput([local-reputation] of myself) trade-record-current
" l1 s" U6 V9 B- o+ ?( E: r]' ^% `: v" J3 K' R/ ~
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
( z0 j, H" N  x; j;;
将此次交易的记录加入到trade-record-one
" z5 x% N% b7 j+ y: C# kset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
, i' I& t  h1 k* Y+ |let note (item 2 trade-record-current )
. n* H% ~( D9 h' V+ v3 Yset trade-record-current
1 I) m- R5 |+ I$ \9 J; C! s6 p! D* u(replace-item 2 trade-record-current (item 3 trade-record-current))
' `' c/ Y4 [" q1 G6 ^- x5 p
set trade-record-current- G( a# h% Z" n/ ]
(replace-item 3 trade-record-current note)! b3 Q1 b* U* w. t: K- @

$ F% g0 B9 {  j. i: O& G
( W" `# e  q' [7 d* b1 f
ask customer [% I' }, p: X9 @
update-local-reputation
9 S* ]  @8 D" Fset trade-record-current- G; ^' i* K' R
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

; l0 m9 x* x- ^- H& X) E]4 f% ?( d5 J1 \

6 Y. h" [; k) N* A; {% }0 k( `

  @: [$ J3 |/ ]6 z7 Rset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
$ s9 c: P7 f& s# @
) k6 I1 ^! \9 L: K8 C
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
  }( L: d9 c$ u+ b3 e;;
将此次交易的记录加入到customertrade-record-all
( u* W  l; x* y3 a8 ?end
6 Y3 j' ^3 M2 Z1 t- W. S5 j
4 l1 i9 `9 [1 b& ~3 q& l7 y# s% jto update-local-reputation
) x' g5 p% M' R! Sset [trade-record-one-len] of myself length [trade-record-one] of myself" p  o! p8 n" y! w# ^- s

. E7 c. ?' T/ d8 o8 B# M& w
* T: Q6 g+ @" p% b;;if [trade-record-one-len] of myself > 3
! N  [0 W; I$ B
update-neighbor-total. c$ k9 l' W5 h0 n* i* i# ^, L
;;
更新邻居节点的数目,在此进行
' Q/ G+ J8 f  s5 L6 nlet i 3
% w7 K; h/ f2 r+ {+ \- flet sum-time 0
7 T  V1 X7 U$ z% hwhile[i < [trade-record-one-len] of myself]
5 {( d) v8 c2 \+ Z% S[
9 t) @$ d9 y, E+ fset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
; _. m% x" m/ C$ vset i
5 C9 L( M" ^5 r( |0 i. V$ z( i + 1)
' J- a, Y/ J- @6 |
]
/ F, ]! P- R; q) b, clet j 34 D8 o$ h! G6 g7 U
let sum-money 0
, y+ t& e" R; J* D! j. }while[j < [trade-record-one-len] of myself]
+ s% H# n% l* X2 v, Z; z[; l: H7 @, V# P2 ^5 J/ ~" G: k$ o
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)* }  [4 a) n$ U1 c& D, J- C, W
set j
$ W3 j+ R+ R1 p8 m( j + 1)

# G3 d# X$ r4 z5 ]7 i/ D' c- K]" ~- @: x6 @/ `( K0 @* T
let k 3- ~- y7 s0 R4 z! V' X
let power 03 g# R* Y4 v! }. g
let local 05 N$ z9 R. ~8 I
while [k <[trade-record-one-len] of myself]. a, ~% L/ T6 r- w  w- l
[
& p% c0 ?$ b3 n# Rset 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) : ?4 j8 k0 ], r- C
set k (k + 1)
% s0 q9 q- P$ f+ i5 b( R: P& V. \4 c. v]+ Z; R5 |+ l# \: E" w
set [local-reputation] of myself (local)+ ]9 k5 @) S2 x
end
& Z" M. a) Z  p0 T
9 B8 D' c  J& q3 w; f/ tto update-neighbor-total
/ d2 S$ B- Y  u  q& s3 `0 F9 O" ]2 f" j* ]
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]* i2 D0 a/ N4 U" N

+ Q/ R* e  s" l0 Z4 A7 a% d1 s
% V- k  l: u( @0 s& O" {
end$ o4 f- n7 O1 ^6 e- @

7 W/ `1 r9 J3 s( }8 g! J/ Xto update-credibility-ijl
! C3 L9 {& A1 {/ E( U& @5 x! W+ q7 V8 E' g$ h6 r4 M
;;
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。
; p2 Z* Y  M; ?let l 0  b; l, G, k7 U
while[ l < people ]/ B/ @2 E- N! I
;;
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
9 A% J: L. T1 K" t[
" Z) q* [) M# j! A8 xlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
3 @# _3 Q% v( d/ H: {" W$ @if (trade-record-one-j-l-len > 3)
$ `' ]" q$ {& J[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; ?- U' f7 e9 w% Y& ]4 ]1 D
let i 3
/ Z( t# @$ d, m! m2 R, \! vlet sum-time 0  \5 M" \- ~* ?1 {+ O
while[i < trade-record-one-len]
8 `6 W- D* `2 F6 A+ J! f[
/ A9 s" C7 M  P" w( z. bset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ), z; R! ~/ f( p" X. W# ]
set i
; B! S7 B$ z" M9 y0 X6 T( i + 1)
5 z: S; ]1 A8 I
]/ g" A9 a: B  y
let credibility-i-j-l 0
2 ^' p$ m  l8 n) z8 Y' y8 I4 K;;i
评价(jjl的评价)5 r  Q3 ?( }4 a  b
let j 33 {. w- Y/ S( A, n! k1 ^
let k 4, x3 D, B7 N4 {4 y0 |0 k
while[j < trade-record-one-len]
' J6 y: N$ X' h  _! D1 _. O[2 ]6 w) C4 v7 a( E" P, ?. n4 Q- u
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1 F, g" \4 I" U7 `
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)
( N, o8 S* }1 M0 Oset j
/ p9 U/ C/ y9 w- S5 p) e( j + 1)
0 U+ K" w6 a' h: T- d
]& F$ ]* D' i8 `0 ^8 k
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 ))6 F& I! T, |. u

7 T* ~& B5 V& C; }0 Y) N1 b

- W3 P) R7 x- P! X8 [let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
! `4 C- S0 o, {+ U6 }% n# p;;
及时更新il的评价质量的评价4 B( {& I% K$ r2 ~$ v% K7 U
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
; V# T$ x% P- v" H3 _+ jset l (l + 1)3 I( C, g/ A1 w" D# V+ K9 p3 D
]
4 n, K3 N2 e, f$ Eend
2 a& b! V, `/ ^  q$ _0 p# |' v* T1 R2 W) F  z# J( f
to update-credibility-list
# o9 j, K% L* P+ G1 C* Nlet i 0
4 N/ s8 H  S; ^. l7 F* ]; }: Mwhile[i < people]+ P- W! q9 x3 b
[
4 @: A' S' I6 Z: t! }& klet j 0, \, A1 \# B! O5 H+ g4 K
let note 0% g8 a8 l  a6 X% u, s
let k 00 Z4 h+ K7 C3 [- K0 N! ?  o; I
;;
计作出过评价的邻居节点的数目
9 x" J* E; j; E$ s$ ywhile[j < people]
6 b: p& ]/ p8 a" C7 M) ^9 P" r! ?[
2 r# Q$ J5 J9 C# q/ oif (item j( [credibility] of turtle (i + 1)) != -1)$ P1 h' \4 E2 k0 D* C- _
;;
判断是否给本turtle的评价质量做出过评价的节点& O3 [+ {9 M3 k0 f. e6 |9 B% ^
[set note (note + item j ([credibility]of turtle (i + 1)))
" }7 |+ \+ U3 e; Y4 d+ o! o;;*(exp (-(people - 2)))/(people - 2))]

$ ~$ }5 a  `8 r  Q% mset k (k + 1)
# ~* B/ q# n, e  d& K]% @: S2 }& f# l$ k
set j (j + 1)2 D! i6 i4 y* `, c
]
5 z2 g2 r( }4 M; K3 M3 z" w# Wset note (note *(exp (- (1 / k)))/ k)
$ w& }2 W  H) X4 M$ dset credibility-list (replace-item i credibility-list note)
" F% o4 [; j# N0 N! d. Cset i (i + 1)6 K) N; ]/ G# C" M5 h9 ]
]
8 ?9 z7 C+ }) y2 w1 Yend
  E7 P9 l  }5 g) @, |; O) I% ]7 K- c  f6 e3 v8 r5 W
to update-global-reputation-list
$ I/ [2 |( q; L  e9 o; alet j 0
2 }4 e7 J- ?- `4 a- X  J* F+ Fwhile[j < people]4 q+ o" W8 w& u4 a. h9 `$ ?; A
[; C) ?" F  G4 q0 q: ]" ~, c
let new 0  J" V- ^, C: B1 T3 Q- @, [$ P
;;
暂存新的一个全局声誉. n( A# N& P4 \9 P* V
let i 0
0 l9 e# o# D, k$ i2 Plet sum-money 0
0 a9 u. g2 f- Q( g; w& Tlet credibility-money 0  ^* e( Y* \# N0 S9 y
while [i < people]
- z$ e! _1 [$ L0 A4 Y1 h[
) A. V2 j! Y: B0 \+ jset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))' ]. C5 S- _' E7 }2 t
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
7 E6 E9 R, b* J+ I' Z, Bset i (i + 1)
: ]1 w' q) i2 O4 z]" n1 o& [) t6 [
let k 0: O2 g7 h) h- y" W4 M1 \
let new1 09 C# h7 A" J0 ~; r1 K4 j4 G- z, s) i
while [k < people]3 E4 n) z- Z: d8 s" r) o( B$ F6 f
[) w0 h/ }3 Z; Y6 r5 y: _5 U) _
set 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)5 a$ e4 I3 r. k# Q
set k (k + 1)0 _& C# p, A0 ^/ U+ }* {
]
2 o7 D  R# @, D) y: gset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ! n9 Z8 [6 \3 Q. ]5 q1 X
set global-reputation-list (replace-item j global-reputation-list new)
9 l- K! n8 R& l/ lset j (j + 1), N, O/ _& F* s2 V- ?3 c: Y1 w6 Y
]
: i' m+ ~7 @1 fend# f) ], h  w* `; {4 _
) N- f+ V1 ~, H1 J
- |1 k% z" x8 k! S9 X9 `# k, F3 W; G, _
  e; f! U+ G4 n- D( G* o9 Z
to get-color
) K4 j( ~& A; r" U7 n1 ?3 b6 A5 w! p3 e8 \0 F4 {
set color blue

* Q6 u2 s- ]9 _( ?! u7 Mend
* [- t. j$ Y9 q( H2 b) q& D" a/ w5 q- g
to poll-class) s' f0 S# e1 `5 J* K# H6 _5 L
end
* q+ z# F0 z, _! y- k7 i" K6 y8 z/ i! m, ]/ n
to setup-plot19 a8 E; b6 O0 u1 @; \. d2 y: x

3 d- x! }  A4 ?0 U4 T. @2 Y: Yset-current-plot "Trends-of-Local-reputation"
% x( s2 k; I3 _2 w; g
/ f" W& A2 u* o* i
set-plot-x-range 0 xmax

1 \% R, p7 U5 A  U; C5 o
0 L# B$ z' u1 l' lset-plot-y-range 0.0 ymax
3 y) k7 e$ _: ~5 G1 a4 \
end% _+ V, v1 M, S2 J9 q7 o" f
/ }# d1 h+ C* E/ ]- C* n
to setup-plot2
! ?) t# R- t, c; Q2 d# g6 ^* Y! y4 R. {
set-current-plot "Trends-of-global-reputation"
; h& n4 i: A+ x: M# O1 A" g6 r
  S) r* X* a6 D0 Z  Y, a# n
set-plot-x-range 0 xmax
. N; T! A9 Z4 ^) C# Z# u

5 z( q3 t4 J# H: Kset-plot-y-range 0.0 ymax

4 y" G. z( o( k' D  Eend
4 f) `! ^# J1 M, B
% I/ B+ X5 d7 Q2 m. Bto setup-plot3
- z9 _1 ?# g1 ?0 E$ }3 A. Q, l+ }
$ H$ w0 R8 R, W% D, h3 g' ?3 T5 [set-current-plot "Trends-of-credibility"

. r* P9 x# _& D/ F0 d' s/ q
* k8 x" `* M3 H% }set-plot-x-range 0 xmax
! h1 ]( O! m! g

1 B, t; _& G! R) S3 O3 T0 fset-plot-y-range 0.0 ymax

. O/ Q9 ?5 c; I8 r4 A0 D) q1 [end
' ?0 Y- F0 U2 P/ ^
# b- a% x# z% x4 ?5 L7 d3 yto do-plots
# V/ K3 O# W2 j( a$ T1 Q1 n: \. rset-current-plot "Trends-of-Local-reputation"
! H" q; y9 n" h$ U! D* C/ pset-current-plot-pen "Honest service": e5 H  {& C; F
end6 v- D* A" {1 n& j2 l
  H4 X- I) S9 n
[ 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.1 {, s4 l1 U9 S4 ^* d

$ u# A' `4 N6 U7 P; C' X2 [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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