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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:* }4 b8 P- q; e* T, [
to do-business
0 j% V6 s5 L2 O* E6 } rt random 360. w! R+ L$ W. f2 ?" W, q
fd 15 }  ?4 P4 O% a8 c
ifelse(other turtles-here != nobody)[
- W" D- q, n& e   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.* n: n/ r, m# W: Y- Y% X" C
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
$ X& j  z( c- K0 `) f   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
5 x/ a3 j* D# A, a   set [trade-record-one-len] of self length [trade-record-one] of self; C" c  I4 z& i7 Y, {
   set trade-record-current( list (timer) (random money-upper-limit)). B; N2 N2 `! q, g" X* ]( Z
% k' _% U3 D0 q$ t4 A2 Q
问题的提示如下:
- K$ C* A1 v9 |
& W5 U7 |# ]8 |' W- Oerror while turtle 50 running OF in procedure DO-BUSINESS( |7 z1 h  N+ v& f6 }
  called by procedure GO
: ?( O2 J4 S: ~$ \: O9 J+ sOF expected input to be a turtle agentset or turtle but got NOBODY instead.
2 s8 K8 |- W  k  X, }8 E. c
(halted running of go)  j4 x4 C7 k0 r: C' D% |. @

+ j" k% `" w. i) O# K3 R4 a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~~
4 k: o: _) b; d. _% P% O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; L' @+ G( S0 Z* A# y
globals[8 S3 i- J2 a( O: x
xmax
0 X2 c; K& m- }' w! d( W" Jymax
3 E  P& R% C+ uglobal-reputation-list
) t& C$ a' b2 Y# r9 c8 i' t& z6 p* O! f& ~
;;
每一个turtle的全局声誉都存在此LIST9 ^5 O2 g( r1 z) ~
credibility-list
0 D7 {' c1 `# B- F;;
每一个turtle的评价可信度
6 _: c5 b3 k2 ^2 \& ?6 d6 Vhonest-service7 E# c7 W9 _# U1 O3 g/ b, k
unhonest-service" i  H7 J$ y+ \  A+ M5 U
oscillation
& R3 R9 h; L' z+ `" rrand-dynamic( I3 X) M: A8 a
]
$ @" Y. B. H8 v5 p$ e& i: ]- G9 r
, ]  `' O' b6 Z! x1 Eturtles-own[
5 V/ `* l, I3 e2 A. \trade-record-all
% n. p$ [0 k7 t  [;;a list of lists,
trade-record-one组成( s) Z3 d6 }3 U3 u
trade-record-one4 P, D' _7 D; V" E$ G, M( u6 ?
;;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; d$ ?8 N5 d' {; d4 A; F9 h5 J; I4 n/ t3 f' A: c- y% Y
;;[
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! t5 Q& Y4 ^1 N/ m6 K; w
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]' Z$ j$ \( X5 n' m' K. s
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list
) R  c* u% d- C4 s' b0 a4 r7 {neighbor-total
& O) C8 D5 j1 t1 ~. @;;
记录该turtle的邻居节点的数目6 [# M, N3 v' O
trade-time
+ m3 X' l8 Q5 ~& W;;
当前发生交易的turtle的交易时间% E" }5 O6 i9 j8 X' Q0 |
appraise-give
; a+ q3 B5 K. {7 B, q) z+ E% Q1 p% k, [; i;;
当前发生交易时给出的评价
, O" G% @0 q7 N5 ^; e+ B  [, ~appraise-receive  s4 J: h/ y* C7 p
;;
当前发生交易时收到的评价0 ~' Q- r; r8 E$ z. s) k9 D+ }
appraise-time
' M+ X1 k0 O6 R6 D;;
当前发生交易时的评价时间
" I4 a7 ~% p7 @/ H, W  A- M& ]8 W" tlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
3 @$ _8 e2 G$ ?trade-times-total7 r% M5 z- v) W
;;
与当前turtle的交易总次数
2 n- f4 }. P1 p2 Z+ }trade-money-total
, ?8 Z! R1 H: x- w;;
与当前turtle的交易总金额- f* i, V& W  w% G% i
local-reputation
" N$ Z2 `/ o: y+ u5 R6 vglobal-reputation
" {* T6 q- q. C9 ~credibility
( H# S! m# V: J5 V9 g! V( l) e: Q;;
评价可信度,每次交易后都需要更新
! p* u9 p5 n' y2 |& ?credibility-all: d, Y0 s7 Q0 R- W. b$ i' w2 s% f
;;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8 v- Y1 O1 f4 [2 M3 q

$ ~5 p" N; w) A, G$ i;;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 p- ^( K6 ncredibility-one
+ S- A% K3 {5 S7 s) m5 ?;;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' N+ ~) t' ~) L+ q+ {
global-proportion
& _; q, U% |5 ^( T% Vcustomer( t1 j: Z# u6 r% f2 B6 u/ c+ N: M
customer-no
0 O3 Z% @% I  [) `  f4 Z4 Strust-ok2 t0 C* @3 R/ X# |# S
trade-record-one-len;;trade-record-one的长度
9 m3 Y$ ~+ Y. V- a1 ?2 e]
, j$ l( q) Q0 H. _
1 x- d9 `: e' a5 ~! s3 ^3 O;;setup procedure  k: o8 C0 s% \; x! G
( G3 I/ R3 N1 r% w
to setup
; L0 T+ y6 ~! L# K& {$ P/ G; b
6 f& h2 R* q$ U9 O" d- R; v! Eca

! o/ Z) ?, D. X
, @4 z. V5 U  O" tinitialize-settings
! r* |8 L1 ^2 ]! F3 O. H6 v# x& _. A9 P

; c* Y2 p( w5 d' E% l) tcrt people [setup-turtles]
5 u$ k* w* ]0 N7 V

) d- G# S4 |; Y# ~. N. r: ereset-timer

# g3 t/ t# T( B
/ R2 y( u! \# c" \, |& vpoll-class

, B) [4 O! n6 z. W0 V
6 _- t' ^& q6 v( {) Isetup-plots
$ _3 l5 X  G2 G& I7 A1 Z  D3 ~
4 O( L- r- x) r2 @6 M2 C) Q
do-plots
. X  P7 N: o0 U: f
end( c' ^1 `& G9 Z4 {' O. j

! v, ~! N5 X0 Z$ `7 v" _/ {to initialize-settings6 ^0 h+ R  E2 t% W% N/ G
0 C* J/ h! a, D
set global-reputation-list []
1 b0 x0 S1 f  s+ i: e, ]- T0 W' Y

3 P& V" N3 h; E1 a* F+ Kset credibility-list n-values people [0.5]
8 F9 e2 ^. K5 x

9 y- E( H# m$ }: S7 e4 X7 sset honest-service 0
) b/ t: E. Z) {  V7 }$ n$ Y% e

/ j! C$ W& a( M% U4 c# Nset unhonest-service 0

" t1 X7 H* n% z- {
( m" b- J' @( l: B) Y' a8 Y5 Yset oscillation 0
7 r' M0 B' T/ h' U/ N* t: C
* W+ r3 z5 \4 T
set rand-dynamic 0

% `( q: @/ Q+ b! w7 bend" W' j; \, H9 e
4 n7 C# A  Y6 x" [2 A' U6 x
to setup-turtles
6 n7 B$ M+ F; K" o# S. T2 I- Gset shape "person"5 p! |, q5 c. i) g
setxy random-xcor random-ycor  V! w7 I6 r" S
set trade-record-one []
3 N0 J. ]) @( T# f/ X

1 c+ \5 P( \: [2 X6 O. aset trade-record-all n-values people [(list (? + 1) 0 0)]
: J; G3 H7 `7 U

+ X' Q0 g% L# t( v" Wset trade-record-current []0 R* @: t* S3 L6 B  \' l5 b
set credibility-receive []
5 K& Y0 s  U# j0 \% ]set local-reputation 0.5
  u/ y: [( \! o8 ~set neighbor-total 07 j0 T5 `- ~; d5 Y: l2 i
set trade-times-total 0
0 N, c( R1 D/ M" D1 Pset trade-money-total 00 v2 C8 v+ V. U3 L" K+ [
set customer nobody
" D( t3 N0 n  f7 _0 N( gset credibility-all n-values people [creat-credibility]- A+ C" O) f( \0 U
set credibility n-values people [-1]4 W7 \, z1 ^& o6 c
get-color6 I8 k* e9 j  t
7 H3 x, K/ E  w+ R  K, A
end) b: ]: L; ^! z+ w9 }. d' }

9 c$ b9 R( E. @9 l4 Oto-report creat-credibility
. s+ m) b' i, W5 W0 b# yreport n-values people [0.5]2 E" Y' C) R0 a* {
end
; C  u# g/ m* q  j# k
% K9 G0 _% o3 Uto setup-plots
) p( l, Q1 g! D# b& k- w
' l% w& Y6 _! v/ c' K  M1 Nset xmax 30
+ C4 n& L' W1 k1 F  Y; ]( @+ Z

0 a( L0 w' D0 ?# U( ]set ymax 1.0

& g! P! U* O$ K0 U
# l, y# z6 ~6 G7 e5 f4 _clear-all-plots

) l' U( \- b6 q5 {# _- w  K9 A/ V+ s# V% t7 c( r5 j4 J% Z
setup-plot1

7 @* R. Y1 i! g% B: o% s& a4 z; e2 Y
setup-plot2

% [6 C/ N  y" B! d% [/ p3 @
* ^- s% s9 E( v4 n+ ]setup-plot3

" p7 X& [& s/ ]% l& K; c2 c( Y& gend
. K1 P6 g. S: J8 w  R8 x1 C4 n+ ^$ Q, v! _6 h
;;run time procedures
! Q' n4 A( r" R/ ^9 z& s
: |3 J3 I3 |' j) e/ D9 Uto go
1 T& g! V7 j2 |3 D* P  D$ F, R# J) x4 A% Y0 F
ask turtles [do-business]
! W, `# A3 W6 h( j
end% w8 Q$ R2 O; s+ k8 m% W  Q$ X

0 |: ~: b, n4 Q- E7 Q/ _0 tto do-business
) m; F3 O( z' {. _; i$ {
  w- ?0 U- [' z0 z; ?
7 ]) D2 |5 h2 a+ h! M% ]9 K
rt random 360

6 N1 a+ u5 [+ |
1 c# Y4 k1 p( g9 hfd 1

% _2 C8 _8 i: W- W
/ E1 `; E5 W7 `  b7 qifelse(other turtles-here != nobody)[

* z. U/ h7 W& c8 }+ q" U
- c/ U# H+ P9 n3 g- m, wset customer one-of other turtles-here
0 E$ h  H+ g* H

, }$ s+ k: B" Z0 V! S: };; set [customer] of customer myself

) L* f5 d9 [0 {; t: r: I- w/ x9 Y# @" q2 y1 H# ]
set [trade-record-one] of self item (([who] of customer) - 1)
$ t& R/ U. ~+ u! l9 m0 G1 n0 F[trade-record-all]of self% [. {/ }- k8 P1 W
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
. Z7 k' a2 U3 z* _
' t7 W! I" S" A2 z1 o3 ~2 C( ~
set [trade-record-one] of customer item (([who] of self) - 1)
( E/ m( X# p: j' N* s[trade-record-all]of customer

8 B  D. m0 L1 y4 p7 W8 {$ c# _- y, M' a8 V  E' n: W" K. r9 N
set [trade-record-one-len] of self length [trade-record-one] of self
, `: T6 j% x4 y( k

1 x+ Y* r% ]/ |5 o% Cset trade-record-current( list (timer) (random money-upper-limit))
; G& C" [* h7 E( r* d. B4 `

0 L- V9 w7 S3 e5 R6 hask self [do-trust]
- J. ]" f  J/ r) y2 t: Z, P% p  O;;
先求ij的信任度
9 o2 U4 @  r1 }3 `% {/ W2 Q$ ]: x6 {
if ([trust-ok] of self)( B# @8 e# n% U- v" s* C# ~- m
;;
根据ij的信任度来决定是否与j进行交易[
9 o: J! M, n* e  c& f, }  K1 \ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself# }9 A! Z2 a' ?( h  }+ V

- t) l0 L+ n7 q0 C  \! E[
- {  v# J( p/ r9 U

  ~, H9 T- \3 L2 H' h0 x2 ldo-trade

5 V4 {: g6 c' f/ w9 d. B6 L
5 Z* p$ Y9 |3 u3 d- Uupdate-credibility-ijl

8 L( P6 D8 h# K, I7 c1 A. [( c$ ~* ^) L) }( B! U
update-credibility-list3 p' I3 q8 F5 i7 B: @1 z. v5 Y
: S5 u: T% D9 B* R4 G/ q  ^

" n9 l- t# t2 r5 R+ J( u5 Dupdate-global-reputation-list

) V3 V$ g/ v) X! I3 X: m. z7 n6 x8 D5 k* y4 {$ P  F
poll-class
% _9 N* L2 b1 S* o8 t/ {* t% I- @' Y

. M! ~$ T8 X0 L3 k% }) lget-color
. t+ {  A; f9 G7 k' E' \

; J3 t. W, \. O( J]]) f: q" U8 `% f( ]0 h5 V6 f

6 C) ?9 l1 F- ]: \0 ^;;
如果所得的信任度满足条件,则进行交易3 Y( s( ?5 `, H" l9 ^

% t* _& z9 f9 R6 s  c+ e( k[
! ]' S9 D7 Y* r: Q" ~
$ V: y& M$ h) ~8 [1 d- _& a
rt random 360
" h* a5 k7 a: L4 M5 z
" _# R8 ]& M) {9 w+ A0 {) j
fd 1

3 }& E  `9 y5 z
+ C3 G" L4 M2 N7 w( q2 L9 D]
: c2 [% k) E% S2 d+ Y
* D1 P0 R# |2 N& y4 T" z, g% `
end

& D: H2 [7 O/ F5 v& ^8 @9 {2 ~; q  m: w- b: V' `. t4 I  \
to do-trust
; v3 a7 g1 b9 T3 Z' i+ v3 R$ Aset trust-ok False
1 N4 v3 [, M5 w  C# g* n: m& B5 ~& q9 p& [3 ~: c. M
4 I7 q* J8 h# k, O
let max-trade-times 0
  |( T4 l: x$ ]+ G  `# nforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
% E, P5 z; d, p' clet max-trade-money 0
% E9 e! c3 q; {$ vforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
0 K7 c4 ~# u' N2 @; H( i% mlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
0 v4 W/ ]! y$ _/ D( O- M: b7 c' _6 U3 S

+ g, o7 d7 M4 Gget-global-proportion1 X/ J" X3 P0 _! ]" Q, D) C) F
let trust-value
+ M3 z$ ]5 k5 O' b+ E2 w, h% i2 Mlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

9 @# ^: S& g- T0 [  C0 P! C5 D0 }/ _if(trust-value > trade-trust-value)2 U" x+ K8 l( A
[set trust-ok true]
( C( u+ n) M! n+ U7 J$ oend
  N3 i, {2 X' O$ I7 y, w. x) w
' K7 X+ S9 ]: g+ V! x9 u! Rto get-global-proportion) B$ O' O6 K$ f: [
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
9 Y" @1 b( J. B5 V  z[set global-proportion 0]+ i$ ]) [% R/ g. g
[let i 0
+ t5 d3 b6 p3 }& Mlet sum-money 0# V+ M; T0 ~; Q! N5 f+ G% n
while[ i < people]: P7 h; d7 U4 H$ ?% E7 j/ }
[
1 O/ o8 w( p' wif( length (item i
; A5 q8 Z/ @2 t0 R8 P+ m# Z[trade-record-all] of customer) > 3 )

; y+ i( j$ J% Z6 @3 c[; |) q" W/ C9 K: r  ^5 L3 w
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
4 @/ B% L$ O. S5 m8 S$ i. X! I]
0 k* D$ r9 o" c; B. X]
7 T$ F) I3 c6 ~  w$ Alet j 0
" [+ k: s1 i+ ylet note 0
* N, F% t0 N* M5 U* O+ K7 qwhile[ j < people]
( D7 d9 c+ O+ P7 x# Z/ W; ~" u[
/ z% a6 V: G9 k" {if( length (item i" j6 H6 K- H# q  L; }8 p. [
[trade-record-all] of customer) > 3 )
& y! H% ~0 ~, j" R0 X  d' z$ h
[
" Y' p& W3 y4 N( D. N+ J3 \ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
0 Q( ?- X0 o1 h/ y5 w[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)], t( X. S9 X  s
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
. |, r! R9 m" [! B; j/ X7 E7 @]
+ ]# T* G; M5 j% z]' [# \& [- ?! Z" P6 v
set global-proportion note
5 [, n) w; J& b- j$ S% |]# {3 ~" H- G; c
end
1 ~/ q) D) I0 Y% N' E- y" d/ o- ?
to do-trade& c! {, p4 `: q9 P) R/ b; H# o
;;
这个过程实际上是给双方作出评价的过程
( k2 n$ _' l. ?1 sset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价  N7 Y% o/ w) A) S- ~
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价( [# q9 t) a5 O  j% P; {8 @
set trade-record-current lput(timer) trade-record-current& k' q9 Q+ n7 e* X) Q- _
;;
评价时间7 }; _: T" T  U+ `0 [( q0 p( T
ask myself [0 A4 z  H& t% @- V
update-local-reputation
' x$ r9 O; F0 i' Wset trade-record-current lput([local-reputation] of myself) trade-record-current
. U2 h3 n# f8 j9 u- j2 {- U. J]8 c5 Z! w  _4 @, e# F; m  E3 w
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
% {. t: Q7 n; ^3 V% r6 h;;
将此次交易的记录加入到trade-record-one
% A; m3 u6 @% ~+ dset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself). m* z* q  |0 Z* q0 R3 S
let note (item 2 trade-record-current )
5 s4 @( l3 q! a. G  g) f, ?set trade-record-current' f, n2 z  J. [' h8 D
(replace-item 2 trade-record-current (item 3 trade-record-current))
5 H$ {% T6 @  [* U( M
set trade-record-current
9 V1 P% d$ A- K/ O2 o8 Q(replace-item 3 trade-record-current note)
8 q! {+ u/ @" l- c2 P7 I6 p. w0 p' ]% u- z) s
7 `/ A0 x8 t/ B1 [% K4 f
ask customer [
4 E7 ^* E! i3 f' ~' yupdate-local-reputation
/ A2 t! N/ u) l$ b1 zset trade-record-current! y# _  \! l) s  M. G) Q7 o
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

# t$ n/ v- j" X$ V5 i]. i3 `( y3 ~* A

' A. H! |4 A/ ~5 P5 U1 ~, B
; A/ c0 h4 g; [& ^4 d- P3 s+ q9 ~
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer3 D9 Z. u! V' I! L+ s2 t

7 p, K' r. a" S/ I$ N( Sset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))) |* F! G6 v( Y& h( v
;;
将此次交易的记录加入到customertrade-record-all
5 `2 l& [% Z" G! B7 Nend
* C" o" s+ Y9 J
5 M" K( l7 S1 \$ `+ @: d4 uto update-local-reputation
/ _1 L* y6 V/ G# A5 \7 m) Oset [trade-record-one-len] of myself length [trade-record-one] of myself
5 ^  Q' [* W  }8 V. a+ v& W+ Z8 i9 r! [7 w) h1 M; z9 b/ [; Q  Y  }

& b9 X$ g' J$ h9 y;;if [trade-record-one-len] of myself > 3
9 M: k2 ^0 }' g5 Z, j0 C! J/ \
update-neighbor-total
/ N) {3 @$ Y! f" Z+ C! I! O;;
更新邻居节点的数目,在此进行
% @* Y' t* o4 w# B& t+ D5 L( q% ilet i 31 Z4 b0 h# k/ A6 E$ k/ l
let sum-time 0
: m' |; p* I- x+ {! Q& W4 j$ Owhile[i < [trade-record-one-len] of myself]
3 ~5 `. i# S/ X( I" Y: d[/ n0 T3 S3 J" X) ^! S4 j
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ). z$ |' O1 X, Y# V, S
set i6 X9 _2 H; d0 ^) J9 f# z
( i + 1)
: A, v1 I+ Y8 P; D
]: o. s  v" T4 o& Z& r& E2 E0 y
let j 3
" U6 l% o2 i" k) Jlet sum-money 0- |2 f; s, A4 U
while[j < [trade-record-one-len] of myself]
" W$ g& w& M- L7 |[
  |# m  J: ~/ r8 s- ?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)
+ }8 q3 c  A3 Z, i; Y$ x  Iset j
1 r1 F* u$ p. n7 \( j + 1)
6 h/ @  m) r& ?4 Y6 p8 A( @
]
$ I) O! _( _" D* R4 m& ~  mlet k 3
/ @3 Z3 ~* r5 T% U/ C/ x" R( w2 f( {let power 09 r' q+ ^# m- c2 a- h
let local 0
+ m( l) `- e; Bwhile [k <[trade-record-one-len] of myself]
* T1 U9 C- _: U( |[: R% v0 C0 T( m4 x
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)
3 y! \0 n5 X* ~" u/ M- Oset k (k + 1)
  V( n1 @0 j+ W* g) z$ i]
! `: h* f0 N; {( G+ c5 B0 R9 w3 qset [local-reputation] of myself (local)& R; \1 E0 N0 I# M8 Q8 _
end
) R) E. ^8 b7 H% d0 U( p; F, c0 Y% Q
to update-neighbor-total* @. H2 j) J* d/ s$ R0 S) Q

3 O5 A8 w' ?0 A* k& P( yif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]/ v) z  t! h$ ^/ i" H) V
" W8 o( z& ~! }( W! `& m9 e

. s9 v; v1 z% K. F  }6 h9 Tend! e8 n% j7 }# r$ s: R) [/ w

8 G; S# m0 |3 g. ?to update-credibility-ijl % k$ C( h0 n8 n/ Q' b; n, ?2 p. J
; v" B( X# D+ Q$ M0 v
;;
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。
2 F' F7 A7 x5 l, `7 R% Q- Llet l 0, x. Q% U4 d( N5 Z2 x/ J1 m, m# b
while[ l < people ]
+ O0 P) T+ e$ M, G5 P. z;;
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
# d+ ]5 g( X4 Q! d( W7 u0 B[
9 N5 h  u: j  s7 v% r' Glet trade-record-one-j-l-len length item l ([trade-record-all] of customer)( d; ^% ~3 h% f2 g& L( z9 M
if (trade-record-one-j-l-len > 3)  I& N+ I: c( l2 D( l: a/ R+ ~
[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
- S- J# V" @4 ilet i 3
9 l0 `; r4 g( X: {( xlet sum-time 0! X$ k; L& S+ g9 W( {+ y
while[i < trade-record-one-len]; q$ y( d! }% E
[6 ]' w) U( a7 p: B5 i! w3 W
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
; f! F4 P- N4 I. Y% T3 h: G4 rset i
9 @4 l& U* p: B% U; v' T" S( i + 1)

) t/ c) x: ?/ M1 e6 B4 w, q6 b]
( s" z8 w% o$ g+ }" N3 u) C) Elet credibility-i-j-l 0
  g$ k  A- j7 h# h6 [* d;;i
评价(jjl的评价)
$ ~6 \: `4 G, w7 g/ g  Wlet j 3
: T, Y. f; O2 i; U. _6 O' Ulet k 4
% j' t5 D; `$ Q# r- l8 N9 @while[j < trade-record-one-len]+ d' n7 G8 f) j+ I4 w
[! B( R& O: n1 @
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* D3 i& j5 r2 U1 C4 W* W4 t' q
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)
: z9 {( X2 h6 y/ ?6 @& k  n7 {4 iset j! K8 ]9 Q% s8 W
( j + 1)
% g  _. @9 F( F, ~1 a/ }9 z# S( ~! y
]4 T5 p+ S, [) [) k. t
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 Z7 x$ n  a# {. h0 @

  C( Y* m3 a" c& ^; Q" t+ R  Q

$ r4 |* ~% \8 ]4 O: Slet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))5 N4 d, i& _6 X. b
;;
及时更新il的评价质量的评价
1 Y. ?  e: Q. J3 Kset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]2 t" Y3 D3 s6 s  n3 Q3 H5 U
set l (l + 1)
( w' \. O' ?' A]
1 t) ~9 l* w' k$ o" o9 }$ J( ~end1 I3 D" j/ u. a0 _8 m1 G# o6 E( q' H

5 L  {& R$ M8 z- d1 hto update-credibility-list4 |! ?4 C% `$ W$ T7 d( o
let i 0
+ I; q/ ?( Z) I, Y' z  m4 Owhile[i < people]( W, n- R( ~3 Z6 Y0 C
[5 ~0 C: ~, }# R0 l4 C
let j 0, |4 B# Z" L+ ?; w
let note 0* N: [, _5 ~" _# }; s
let k 0+ @1 p5 w$ \- |6 k8 R
;;
计作出过评价的邻居节点的数目
4 h& c0 i1 d! w: \- Q3 p1 Qwhile[j < people]1 ]. w# F/ e7 B' N9 }
[
0 }5 }$ A! i7 F% ?  s5 uif (item j( [credibility] of turtle (i + 1)) != -1)* E! s! e# Q. h* k7 x2 H2 ^
;;
判断是否给本turtle的评价质量做出过评价的节点
" y+ G! p. X  U8 w[set note (note + item j ([credibility]of turtle (i + 1)))
0 a5 E7 u* g! U, I;;*(exp (-(people - 2)))/(people - 2))]
0 A2 Y$ Q) L; M9 |7 ]
set k (k + 1)
- C0 |* i0 I2 y]" J+ Y% m2 s  A1 n* K" j) |# f4 _
set j (j + 1): n9 D* l6 y# G- @: q; R
]
5 K) N  z/ t  S- x1 J1 {$ C0 g1 qset note (note *(exp (- (1 / k)))/ k)
+ Y9 m, b. M. B, c* `. sset credibility-list (replace-item i credibility-list note)! l' [' C( P: {6 D
set i (i + 1). u2 z% Q5 K9 Z. f
]
9 G: X7 t7 f8 X. M, O3 C3 e5 Mend6 h- x! w; r. O) \: n+ K

1 |0 Z) M% o  j, i+ T" ~/ f' Gto update-global-reputation-list! w# L3 O) q5 F6 u, M8 z4 {" C0 [
let j 0
7 W7 ]/ D) z% U5 twhile[j < people]
9 B4 p/ ?% \3 h! D& l( D8 z[
$ L( f- [2 D$ n1 y+ {4 F! V- olet new 0& H4 v+ O, D/ ~0 I( Q7 g7 b
;;
暂存新的一个全局声誉- c7 M) F) s+ z
let i 0
0 C7 f+ d0 K6 }! q! {4 u: y! F( rlet sum-money 05 C/ m$ I- Q. z. n
let credibility-money 0
7 n, `8 A, |& C7 c/ Awhile [i < people]
4 a* T. @. x8 |) X[
9 N' [# Z# p) b1 p2 W; @4 ]set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
- f: z. c  d& L7 C$ F* q+ L$ vset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
0 ]- t/ _% |8 ]- i3 S: C6 Z7 Eset i (i + 1)# |, D; ]! n) K& ]  E% E$ ]! u. J
], f. B* F; d% R/ L+ \( y+ p, ^
let k 0+ R% }, o, ~$ M% I0 ]" w
let new1 0
6 h. H, Q+ P" @" ?while [k < people]- u; ?; u, t5 [  g
[
9 z' X7 G8 T; G4 w0 A# y- F3 ^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)! [. z0 @9 h2 d* p; O6 `
set k (k + 1)
* K8 p3 Z' i. J9 `0 \3 I( p- k]
3 h# X" W' f4 W( I/ G3 _set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
9 H; t5 s2 u7 {set global-reputation-list (replace-item j global-reputation-list new)9 b$ x3 G2 E$ e
set j (j + 1)
7 p5 W. s0 Q, U]
- M2 v' O- f7 A# i7 ^2 Nend; k8 e6 ~$ X! g  R
5 \$ K$ z$ h3 x
1 ~6 ^* G" k+ n1 q) R
3 D( F; m& C3 |+ s0 e
to get-color
+ f" N& A$ U6 Z& R! ]5 o$ ~
" D, r4 K* m8 O! w8 c& f: X- Hset color blue

- y; e% f( v/ K1 m; U  Zend
% x3 u. a# A- O1 v  \; H3 V  q! Q" O: v, _( ^# ~8 Q- e
to poll-class
9 \1 g6 {- n6 V+ F. b1 l: S: Qend
6 v# T8 f, Z9 F1 O+ j  }+ L$ T( V
) |4 }6 T3 H2 \5 _- |to setup-plot1
2 I' B4 W+ k( ]0 h6 x3 ]1 H* Z" L: m9 v% E9 t% ^7 b" U# t
set-current-plot "Trends-of-Local-reputation"
1 J- R% p. N* f* L# U

8 o& b& Q' w4 r/ }5 c- |set-plot-x-range 0 xmax

# k! `% X% I# P* m, v& n% b% z
3 \! _) V5 }: R9 l- i& z$ F0 T" Eset-plot-y-range 0.0 ymax

7 e$ [$ I% K* i; \- Eend" d. q$ P, |- r/ }
+ D6 V# U' c7 g" {- ?
to setup-plot2
" q& c' _0 ?6 j0 M- B# F4 N$ N# C  F8 G! i9 B! x
set-current-plot "Trends-of-global-reputation"
6 C) T& k- b7 k3 ~
3 C" W/ M3 L3 t$ a5 j; [1 q. E
set-plot-x-range 0 xmax
# p) d; `5 I2 X

' y; @" N5 O2 _7 v# k' Fset-plot-y-range 0.0 ymax
: Y. p+ e% M& V4 s/ n- R5 k; [
end
4 ?7 }3 ]9 F4 u8 O5 m  N9 W& d
to setup-plot3
+ y4 j" O+ r, m  L# i# V- e- S- r7 u% f$ R, e
set-current-plot "Trends-of-credibility"

1 L! S1 t; U9 P- S, ?, `
7 M# W1 T' o' \; N4 u  nset-plot-x-range 0 xmax

+ L9 B' X! R+ e. s+ B
- N8 r1 [( q' _) _  \set-plot-y-range 0.0 ymax

8 k, ^, @  s4 H" Aend
/ w- j  V/ e) s8 ~- ~$ X) d8 e: P$ \5 T
; Q9 v% V6 D$ m& X$ x9 ^/ |to do-plots
! ^$ w- z; W# D5 `$ d& tset-current-plot "Trends-of-Local-reputation"% O& j% e8 {7 _0 T
set-current-plot-pen "Honest service"
; b: W! v+ q, T9 lend' _2 `8 c, s1 B( [' F" G

5 ?* Q# p1 e1 `* J7 u5 v% R" o[ 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 c5 x% l4 i/ d. f" ?; _% v. E* b  v# i/ y* g
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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