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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:+ q0 j8 g! u/ X+ ^! [* t1 A" O
to do-business
% c2 w4 U7 G: h rt random 3608 K& I2 o" h! Z: _; O
fd 1
" g9 x; ~- Z/ ]; G% `2 C$ G ifelse(other turtles-here != nobody)[/ W& Q3 o# N! ?' i& W8 s" c) r
   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.
. {; V, l! N$ x1 v% i+ \$ n( b   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    # g8 z4 @+ \. W5 R
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
, O" |9 u) W6 ]$ s: W3 B   set [trade-record-one-len] of self length [trade-record-one] of self* z! s; a3 {+ c% P9 o
   set trade-record-current( list (timer) (random money-upper-limit))
7 Q6 P4 \5 }( s5 `% I$ @3 P2 M$ J; D* r& H& P; ~3 f9 J3 `7 l
问题的提示如下:
- n. N. ]' t9 W: O  v: P3 Y* [; {: a
error while turtle 50 running OF in procedure DO-BUSINESS3 V" w9 Z# [3 d5 Q3 U
  called by procedure GO1 M- C3 ~7 r2 d4 o
OF expected input to be a turtle agentset or turtle but got NOBODY instead.7 m4 ~7 E1 [* \0 H! ]
(halted running of go)
$ r, I! j" d% p8 P8 k# Z. ]; C6 {
; ?5 ~" X( l& U6 O2 H& D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 ?, }' v9 X2 J' L
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9 m1 G6 K# h) U
globals[
1 T' k0 g. O# S! ?- Hxmax
6 t5 k% J6 T& l, B: u$ c, l$ Uymax
/ a8 @4 D$ t$ x0 Z+ V& q8 sglobal-reputation-list, r) X# `. i7 W0 ^9 d1 b5 Z4 @
; i4 @) z4 w& H; k  p7 z
;;
每一个turtle的全局声誉都存在此LIST
& T: n; y2 M8 Q+ a" |4 u) ^7 x6 [credibility-list
. W6 k4 A! _: ]" C2 s;;
每一个turtle的评价可信度
6 d2 ?: m4 H( N7 T3 B  ghonest-service8 k( g- {" V. @! C" V/ l% d
unhonest-service7 ]& e1 j6 r  G6 I: ~
oscillation3 {- m( w( Q) m* G
rand-dynamic/ Q% Q( ^+ L& D. J8 Q/ M% N. `* i5 A
]
6 d2 u; ]' O- f  R
' F3 ]+ u4 O$ O- uturtles-own[
) `. M, C9 i1 Y/ ?6 K4 r8 D/ v" ctrade-record-all
6 [1 F/ z0 E/ l' v;;a list of lists,
trade-record-one组成# p9 l* s& _% J: T3 D6 C3 q9 A
trade-record-one
3 [% S& `) l: F;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录/ i4 v0 Y/ C, Q5 _* ]
" R, x$ T3 U) ~3 Z  e' ~
;;[
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]]
( P' X/ ?" @2 E$ N8 ?/ N9 t; Qtrade-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]% @- J$ i2 Z) V( D5 Z# [
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
  b' l2 M* K& O7 ]neighbor-total3 p% e) _. g. _9 j/ B
;;
记录该turtle的邻居节点的数目& c1 n  R! b% x$ q( i- A8 f
trade-time
- c& c4 e8 V% W, W;;
当前发生交易的turtle的交易时间
+ V- I) a3 X$ u2 g: J) xappraise-give
. ]2 c' L4 |; o. e0 q;;
当前发生交易时给出的评价
) }+ ]* T6 @% @appraise-receive
4 p5 a8 f0 l: w% \;;
当前发生交易时收到的评价7 k$ n, C$ _0 }0 h1 n
appraise-time
9 l" E$ n" R# v9 ~;;
当前发生交易时的评价时间
; @% \$ l7 K( P: ], plocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
7 W: `6 N* T1 g2 M2 g, X9 wtrade-times-total
: e( T* K4 s: F$ x2 I;;
与当前turtle的交易总次数
5 G; i. c  n& e3 S+ m2 t6 u' j, ktrade-money-total& {$ T: m" c& d% L# Q" g% a$ Q
;;
与当前turtle的交易总金额
$ c+ y7 }% t2 |# L5 x- blocal-reputation
4 y' t! p& A. s4 \- [; Q! @global-reputation; H4 x; [6 {6 e0 X8 h  E% s/ c
credibility) _0 `8 \% E7 D$ C9 u2 H
;;
评价可信度,每次交易后都需要更新/ E+ j) M, J& J' a" C0 b: T
credibility-all
# Y1 z4 J0 m2 g* l. m: U;;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
. B  k+ M. j* ~# Y/ l8 f/ O8 ~
0 F# w, Y7 R6 p0 Q- _# G;;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: W" z1 @# N3 t0 V  \% E. `6 |
credibility-one7 u& G1 b+ ~/ q; |  H
;;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people8 u6 ]5 n, }) Q5 f' w+ v0 p% m' P: V
global-proportion9 v+ _3 J) c; }8 H# t* H& p
customer, t+ E7 `% a- s  Q
customer-no. l4 p2 U2 r8 [1 g/ w6 B, a
trust-ok. r2 z% i& V  z5 u( d# i
trade-record-one-len;;trade-record-one的长度
2 [) I( t( F; @& d]# Q6 u( s3 P( V( M3 _5 c
# v* z4 [6 n9 A, }
;;setup procedure
1 K* g3 V" T# e# C) D  }$ G  r5 h
to setup. l3 D1 O, q! x$ z: ^$ I- W
* s, F" A; |# j8 B
ca
' p; P+ @/ a/ Q' U) G

+ t: ^+ g. u& t3 {, linitialize-settings
+ z( |6 V* {. y7 Z5 e

2 k# Z4 k' `: z% l3 k: R3 Rcrt people [setup-turtles]
' a- ]6 f1 N3 }5 I

6 O, [5 e3 G/ ~8 f. preset-timer
2 l2 _* N" z4 H

3 C  g6 y, @$ y( a/ V  ~% Kpoll-class

4 ]- e* s6 w2 F" R7 ^) I+ C# O+ `% d! v6 ^2 ?4 Y6 z+ j
setup-plots
. P6 p1 _4 n! i6 @/ R' W2 }6 J4 i/ i

, l: A* g4 D! i0 [! bdo-plots
0 {1 ?1 W' A6 A; M
end! p" S9 [! u, U
' T/ N6 z  E. _* {1 S& o& e
to initialize-settings
1 D( }& S) z" b: }/ G( n
4 m* P8 `. y. A/ qset global-reputation-list []
$ ^( E9 [+ D& }2 z. j

& ?  [3 Z$ x* y( b: B) Cset credibility-list n-values people [0.5]

/ l& _: w/ c4 E& y, q  t
1 }- v0 ~0 m: f' Y' v( dset honest-service 0

7 i1 {. p3 K6 {$ ]" [1 G) J7 y( }2 L! K; }
set unhonest-service 0

; }5 u: D; t: F" `' s
2 ~2 g' J- n5 d  qset oscillation 0
1 G: |0 q& G7 Q
& B9 ~1 ?% }- R1 e% v/ U% N9 D' {
set rand-dynamic 0

. J9 y7 a  p3 L: eend8 E5 A" A( K7 b9 N% Z' _2 h
! |$ u1 {0 M# n) b- P$ \, |
to setup-turtles
  k) a5 B& T7 Cset shape "person"0 U) D5 p  ?0 m& p3 [
setxy random-xcor random-ycor
( r9 Y4 P" V3 I2 z7 cset trade-record-one []) Y4 H, G# v  l' g
* V8 U. E6 K6 x
set trade-record-all n-values people [(list (? + 1) 0 0)] ) R" n$ Q5 Z3 f8 ]1 F, Z, F2 I

# ]6 J5 ]9 L$ D! T# S. Rset trade-record-current []
+ v" P" B* w3 f* K4 Kset credibility-receive []
$ ?# E6 k' V: D' I% B& _4 r1 Oset local-reputation 0.56 m$ `, j. s2 @+ w5 Q# ~
set neighbor-total 0
. @. O& Q# t( b1 @: C- z. Cset trade-times-total 0
3 [, A5 a8 z' O5 Z; b7 V, @0 Q6 \  eset trade-money-total 0
" I4 s4 A# c5 \set customer nobody5 R' T, W3 K2 ?  \: d0 R) W4 F
set credibility-all n-values people [creat-credibility]
& L$ p; F  F: b6 U& ?set credibility n-values people [-1]; x1 F9 G: i" Y/ l, Z/ W
get-color
) a7 |4 ^' ]* U+ T' n$ \

/ f$ @1 j) K5 [5 zend
, K' B% a. ]2 T* |4 a) ]+ Q7 I8 `* P% }
to-report creat-credibility/ w6 C4 C- z4 U" y" `
report n-values people [0.5]: y( B4 r3 [3 \. a+ r. E) z6 \+ x
end
9 L: t! t0 J8 v; {( ]% ^- i. Y. @) Q
2 Y3 ^2 i) z' Z% i  Fto setup-plots* M! s/ h* X$ ~2 q" u. L
4 S; w: `" F7 `4 n- `1 p/ Y
set xmax 30
, T3 j, U0 N# ]3 O: Y8 V

8 w, w9 ~* H- ~8 f" c" m, r; Uset ymax 1.0

) {" d; `3 |  ~+ f$ @$ _$ a$ u- y; n, V2 s. p+ @
clear-all-plots

+ V2 {: p; D1 X! z/ r: y: d* _3 s& @7 ?( K
setup-plot1
! |# k  w9 y! y/ _; J5 ^5 i: k! K

  m* u! S8 q, O: D# ssetup-plot2

( V& R6 P5 m% L+ n1 M0 \9 J+ P* F6 {( w- W  A3 P
setup-plot3
, U' `9 \' }' g9 p% k+ {
end
8 b: v! c) R0 T1 h. q) J2 c; }4 \4 W( f( v) f8 ^3 }
;;run time procedures
& e+ C; a+ Z) w7 _8 _' }( V" ]3 |* O2 k3 I' g% q
to go" D% O! l! w3 x- \/ s
( x! _& o0 @  f- H1 S
ask turtles [do-business]
, v4 ]! `" H6 j3 l& U7 r, Z$ Q
end+ {% b4 `/ C, o8 \. Y
, A3 D; A" U- q) e$ I& K& u; E6 @
to do-business
, z. b+ {* m( S6 l4 t5 x, K8 O

3 v" d8 e2 V- X
# s) @" D9 m) F( d8 Rrt random 360
" T) s: u! W1 t3 _/ x3 E
4 s5 {6 u! v! ?. Z2 l
fd 1

/ W1 c3 V1 V% d+ t9 N
! y! Z$ w$ A9 Y8 [0 I* G6 u# ]ifelse(other turtles-here != nobody)[

  Q% a7 c0 L0 a
% B, V8 O8 i$ Z" @- `. j3 Z. O+ Qset customer one-of other turtles-here
7 N$ W, P3 v  D2 `# o* x

% y+ w+ A# _$ ]" s; }) Y: @2 c;; set [customer] of customer myself
# H' B0 J4 F$ P, z" |0 o2 E5 ~
  N& Y) C+ V  {" I! q0 {1 T- \
set [trade-record-one] of self item (([who] of customer) - 1)4 T, B4 V' o" S! x" C. N) a
[trade-record-all]of self7 w8 t# C6 f1 r8 j' s
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
! n8 F6 `. i5 J- p- C
2 h$ F7 O0 o- _* }5 d4 ^
set [trade-record-one] of customer item (([who] of self) - 1)( m) L& g7 J5 y8 [" k  e
[trade-record-all]of customer

* A0 C) R2 H& A7 p! O  @
% t" [" Z7 w* vset [trade-record-one-len] of self length [trade-record-one] of self

% Z3 W3 x& ^# y6 }2 E5 X$ L$ |& \4 x, D9 A% O5 n2 |1 r" I
set trade-record-current( list (timer) (random money-upper-limit))
2 [, h: Q  V  L' u2 {

; Q) Z9 |1 N! Rask self [do-trust]* d6 M; W& d4 y. G% F4 ?
;;
先求ij的信任度" E, N' \$ z# G9 t4 g

- a: S, H2 l( _; M8 B1 o0 e7 ~if ([trust-ok] of self)/ G9 a  M5 L2 n. K; h
;;
根据ij的信任度来决定是否与j进行交易[3 |: D! `( d) N1 F  s- s: J5 M& ]
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
$ @6 f: V. d! E+ G5 E
2 Z( K7 `2 ^% r( N[
, R: P8 t* r( W  S/ u! ^# }- F
* p6 _: b3 w! J3 _8 g5 E8 ^
do-trade

% [/ q. ~0 Q& Z
9 y, Q# ?$ V6 h7 d/ Eupdate-credibility-ijl

' g. @) w6 _+ z9 I" S/ d4 u
5 O. [/ f5 p+ ?% {3 a! y0 _. vupdate-credibility-list
* `/ n! m* r  T& R9 D! p# A

. z8 i% E' \: j6 ]
; t* v: I4 B8 [3 y0 `update-global-reputation-list

5 U2 a  n) m& b3 U0 L9 E* z# o
. Q" Q+ A: v. Npoll-class

6 |- M& H, E  L1 S- e. M7 I. j6 W6 D& P4 X
get-color

& |" c: X2 z6 P' H+ ], T* \/ V& V1 g2 r$ w; }+ U& I
]]
8 b/ i* m4 U6 M8 Y+ Z
7 [& b9 t6 ~/ H, t2 Y+ ~1 ^;;
如果所得的信任度满足条件,则进行交易
, b, \, C$ U% d& Y3 {0 Q, E8 C4 [8 [- d" v
[

2 I+ f! c" a! @+ e
3 Y: Q# l/ Y8 h6 _# |rt random 360
4 ?2 p* I: @1 n1 A' d% {  b4 Q
0 s& a8 F7 H1 i
fd 1

8 l1 e! F& ~( c* D: u
' G6 z8 y6 \7 i, ~  H( Y+ M6 ^8 F& n]

" ]  l" B# |9 V1 Y$ n1 o( T- e4 v- Z1 n$ r  l
end
! n- F- _+ b0 d" b

' v1 \2 v: J- I6 u# Pto do-trust
: J" T! ~) x, R1 W8 Wset trust-ok False
+ p: {) B( D2 E2 E, x
  ]. D8 V  ?! z" {% d, A6 c

! T. a1 D7 E* D" `% rlet max-trade-times 0
; E+ i( ?, Q3 W7 ?  @( X* k9 {foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
: E( K( }: j6 P! s0 _let max-trade-money 0
2 H( Z; h3 ^1 w7 fforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]& Y' }7 P1 u7 l2 v" {, e  L4 W9 h
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))5 B6 v: x/ r% J% Q
( t6 o* t+ o3 \- J
7 N1 U! Q4 K4 o' M
get-global-proportion
7 f) G" `, `4 U! q2 Llet trust-value
/ J/ m$ l, a  I4 B- X; Y0 y6 Llocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

4 w/ ?4 Y& g7 M, d( Hif(trust-value > trade-trust-value)
2 r0 r* Y1 F, b2 O[set trust-ok true]
+ S3 o( v! c& g8 i, [& Gend
1 F% X0 r* }( v0 w8 S) k0 L* l/ J% v; k  h# Z! X+ l1 r) l
to get-global-proportion
1 k1 L& s! b9 D+ mifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)1 _. s0 T- l1 x! c; C; n7 v
[set global-proportion 0]
  U% l0 b  i9 I. e: V: w4 V[let i 0
/ W+ [$ f) Z- Q. B5 E- g6 ^  _let sum-money 0
# v+ b# L# Z8 T( uwhile[ i < people]
% n/ A3 \6 f8 V7 ^4 V: N- n. x- e/ Y1 `[# h: m+ E3 e0 J7 D' k1 K
if( length (item i( F8 H* r( b) c& X' V
[trade-record-all] of customer) > 3 )
" F  n& Y9 a8 c# F8 b( w
[
7 Z0 g7 P7 M0 \/ M8 U: M2 N6 Mset sum-money (sum-money + item 2(item i [trade-record-all] of myself))5 }1 e" q" c  e
]
- e* [. }4 S9 I. c]
9 p; r* |. _! Q- [; M6 y9 Ylet j 0# K7 b% ^7 j) y+ W1 H# Q/ a: }
let note 0- g+ y5 }: [; l$ O  N
while[ j < people]
+ _, t4 w2 c# |9 ~[9 J5 f4 ~1 j( O9 m; w$ T* }  j, c
if( length (item i
' o+ c1 o8 _, G* s( A: a$ H- Z- x; W[trade-record-all] of customer) > 3 )

5 M' u7 @! N9 _[2 ^3 ?! _: Z! ~7 H/ R# o  Y, z; S
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)( v; l. p' A% ^8 b% P& [
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
* y) D: \7 p# [[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)], w6 Y5 u, b; `, D% j0 A
]1 H' [2 Z  H1 I" J6 S
]7 P0 k- h. X- O2 ]. n9 J+ o
set global-proportion note/ f! A' h# X. p. C
]8 w( w! W. t# W7 c* @8 F  t7 ~
end8 ~: s  L5 t7 h$ k  g

9 i: V: [  q* @" Z: Tto do-trade- g! O' j" b  Z8 k
;;
这个过程实际上是给双方作出评价的过程8 z1 k: f6 `* X' V1 M5 \
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价! ~2 H$ l8 L; E
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
' F% c8 R6 d, ?: ~6 Rset trade-record-current lput(timer) trade-record-current6 r* ?9 G# {3 T1 |0 S
;;
评价时间! g$ \+ g1 w# m6 F, \: x9 l' V
ask myself [' Z' n! n) p* F: v, Y: m) k
update-local-reputation
; m2 W7 y9 C. }- a9 ]set trade-record-current lput([local-reputation] of myself) trade-record-current' s* P  E7 u2 y/ d+ W3 @* O
]
- C$ j! `* K" _) j- e4 Pset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself6 U' _9 W6 [- w, V4 |/ F
;;
将此次交易的记录加入到trade-record-one/ s) m5 d( `3 X. |; P! r
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
' v2 U: |. F/ {$ llet note (item 2 trade-record-current )( C5 x; ~5 c: S8 C  C
set trade-record-current
( X9 \4 L1 h& _# K% S' q(replace-item 2 trade-record-current (item 3 trade-record-current))
+ v% L1 @" K6 |
set trade-record-current2 T% ^8 v' M7 t2 S7 F) f
(replace-item 3 trade-record-current note)3 h& P2 v3 V2 R; z7 _3 X5 W
8 b1 i& m2 g& b7 M3 B. @) P8 S

2 q  B2 b& ]) Y; uask customer [
8 T$ e7 B+ g- T8 b1 C* @update-local-reputation6 E8 H4 q, R8 _- H. f' f, `
set trade-record-current0 a3 D# P% J- }9 n$ }/ t$ s, u' W
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

. P/ Y) \7 F8 k# B( n]
/ e- ?3 E* y" o9 u$ u' p" ^8 |' g3 ^0 L# h

& f2 w3 b: ?7 M$ ^# Xset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
9 i- x+ E+ M6 C6 n; t' D( b: b

5 ^$ N9 B* x" |+ o4 @- T) E2 iset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))6 ]' d- O+ I" U# Q& G& X
;;
将此次交易的记录加入到customertrade-record-all
( n3 e' f' q" p# Tend
8 T6 `: t- I, i
9 ?# X: G& D0 u2 Wto update-local-reputation
3 m0 V8 f' ]3 Q* x7 g0 k) P7 cset [trade-record-one-len] of myself length [trade-record-one] of myself
" h- \0 p# k3 \7 ]% l# K
. ^/ ]+ [7 K7 u, R- v2 k4 J; i% i; U' I9 f7 d% L# n$ ?1 ~
;;if [trade-record-one-len] of myself > 3
% R9 D7 a" A& y
update-neighbor-total  R6 c% S  W+ i6 l, o
;;
更新邻居节点的数目,在此进行/ E8 B7 j1 U+ x/ T
let i 35 [, @( A6 s- e+ U$ J
let sum-time 0$ U% D- w: Y) c7 K) I! i7 Z
while[i < [trade-record-one-len] of myself]
- g! F# J' ^7 A) _( G; j[
, B3 g, d! }) |  uset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )$ t# ]( H6 t1 y9 R5 U
set i
2 c" q, f7 [7 x( j- N( i + 1)

% a8 s2 J/ V! @/ }8 W8 S]
  k4 S3 O% q7 u, A$ B2 o, {let j 3' o8 E, g* i6 L5 x3 B
let sum-money 0
. M0 u3 P" L+ n2 f3 \& S5 O0 {while[j < [trade-record-one-len] of myself]
: q; j5 F0 {7 v' ]; L( N[5 R+ ?$ a3 E" G5 E
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)' T( u3 A$ h5 d) U
set j' c) Q9 m. @6 G7 i% e
( j + 1)
* f; g# d' K; C, g
]
8 q+ Y6 x" H3 i0 M+ tlet k 38 \, k' o6 P. U9 n  f
let power 01 V( n+ _3 S, e! z* Q; g
let local 0  u: h5 A+ M+ D$ O3 @4 b; h7 ~$ Q
while [k <[trade-record-one-len] of myself]
2 t1 C; U. N0 S( d0 ]; g[
. h, D$ Q, _' \. L* pset 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)
, w3 {) S6 c: r0 \; l& U8 y0 Nset k (k + 1)
& h- l% X2 D( h; T  V]) n6 q4 a) H/ g+ I
set [local-reputation] of myself (local)( m1 O3 \( O) E1 l! U
end
) `5 o, P) e9 v# \; C% }, ^. ^* p* A) l, W3 C
to update-neighbor-total1 P  v( o" r- h9 B, a2 Y, g, ~2 z

" U* a( t- b0 z1 pif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
4 |' `' A1 t1 ^7 u7 b# u, S+ f' M0 ^+ ]* }6 Z8 d' f

0 |3 P- b% _, o7 }# o9 D6 S+ s, Dend
7 g+ s3 R8 Q1 N3 e
8 ?1 w% m& s; P) C5 Y# b3 \1 S6 Uto update-credibility-ijl
& M# l* i! b$ d# v: a, [0 I. s6 y; Q9 Q+ t5 I8 J. k) e
;;
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。& y- v, k: D6 `4 j8 J4 Y1 U- q
let l 0
& m8 t6 `, F. L  o+ t$ dwhile[ l < people ]
: e% X! ]2 g" g3 }6 A6 k;;
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& a& k$ p2 K* }6 J
[. ^4 _  A; y6 V4 b
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
4 H1 f! ?1 Q& R* ~# qif (trade-record-one-j-l-len > 3)
/ i5 n- r: I9 U: D  \. Z  O[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
/ `" V! E& C3 Z: n7 glet i 31 ^( l; ]* o5 n2 o
let sum-time 0! S- R) u: D0 H- P5 k+ F, F
while[i < trade-record-one-len]# k1 Q) f0 l+ F3 N3 p5 {
[( L* r: S% h; i, K
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ): Y! Q. k6 {* e0 K: q
set i- u1 |) Q, s' i& h" n; \+ T
( i + 1)
) N+ g- K. ~- j: O  L
], V5 A* p! G# C5 P
let credibility-i-j-l 0$ N7 U* M! Y3 c' R
;;i
评价(jjl的评价)7 Z4 f7 A; F- ~3 S) F' T, H
let j 3  W* ^+ `" x( m( U
let k 4) Z, {! G& ^2 ~  B, K8 x" @
while[j < trade-record-one-len]6 J7 ^( A1 a; l9 R" N1 b
[
  V0 r# U! w- H7 Q9 t' Dwhile [((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# m) G+ G3 k0 p- v: `% P
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)
, d4 W" @% _+ H* j& C2 _( Hset j
# Q6 |8 f1 P8 N( j + 1)
, h& ?! n$ P# ^$ c7 h8 b
]) J+ V, e, |7 {/ @5 Y2 w
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 ))
9 O+ }5 U- Y  u* |$ H5 d1 h0 y( `! a, j& Q" B9 h+ C; b4 U
; y6 X" o( Y# ]' r* z% S! b( n1 J
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))2 [- c* @. a4 [+ e% j
;;
及时更新il的评价质量的评价1 S+ \% e& Z; u  X6 y' t
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]* R9 b1 V4 B" c5 U! V7 R
set l (l + 1)
2 v6 T8 U% x0 s( c]
$ q9 p! p( b! J% }$ gend
4 R+ N  d' T+ e/ K2 O# }* D7 d1 D0 d9 r) \* ^1 S
to update-credibility-list
/ q" l" e& p! s5 ~& Dlet i 0, |' X6 ]7 r9 G! W
while[i < people]
& ~' |* g* z+ l3 e3 @[
3 _4 N1 s! `; Q( K( y, o$ i" [; ulet j 08 ^: d7 o2 X# t/ q
let note 03 c$ h9 Z0 u2 t. Q& Q
let k 0
5 X' s" c' o8 ]) U2 m- i;;
计作出过评价的邻居节点的数目/ Q  |" D  Y2 _8 f) l6 K
while[j < people]
& G9 i* P) H! L( P9 d2 }5 F0 ?[/ @# u8 D) Q# u/ |+ p* e3 C
if (item j( [credibility] of turtle (i + 1)) != -1)
5 s* D; S; a% X- V* M# V/ s) U;;
判断是否给本turtle的评价质量做出过评价的节点
) {# M5 m; ^) w& w[set note (note + item j ([credibility]of turtle (i + 1)))% m1 _; Z; r4 d8 @
;;*(exp (-(people - 2)))/(people - 2))]

! F  @% p& N( Y7 y7 g  o& wset k (k + 1)
5 g- N  ^' h7 T' O3 K$ _]0 t% ~! B) V3 e, V, d) a: F/ m
set j (j + 1)
3 i* D( G; e, d: {4 y% M+ ]]7 b- F$ Q2 B& _
set note (note *(exp (- (1 / k)))/ k); _9 g# }1 v3 ^" u9 i0 e! b
set credibility-list (replace-item i credibility-list note)# R: Z) P" q; o# l# ~
set i (i + 1)& k0 Z7 @# ~# n+ V; F
]- n+ |# \/ c7 D. S  Q* {
end# z9 [# T, \) g
( e0 K: J  }4 B
to update-global-reputation-list- w% M. x0 [  _, n0 X7 \' w; O
let j 02 ?. ]. O7 Q( O: E4 m
while[j < people]
$ n0 q- p, V: g2 Q! H7 i; P5 ^[
9 f" y. S# K7 D7 Llet new 0
$ w" K; s7 O8 v0 N) v4 U;;
暂存新的一个全局声誉
( l7 `. x5 [& ^8 m; ?let i 0
: l# ~4 @( B  E% y0 |. D5 Q8 _let sum-money 02 R4 |' z2 i+ |; s
let credibility-money 0; z7 c9 k( \1 C6 A4 F4 l4 i
while [i < people]3 _/ ^- V) I: K5 z; K( s: l! F
[
4 ~+ P0 H# J) N( H: Aset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
- h5 ^% q1 P5 E$ r" e/ k" jset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))5 N3 |4 x0 r$ c' X9 D
set i (i + 1)
" R; G5 h. H4 G8 v2 Z! M3 U]2 r2 s6 \+ v: I: h- f  v
let k 0# H  L* S4 l  L$ U  k
let new1 0
- u3 X0 O6 E1 m) G$ `while [k < people]( D- a0 h+ f; Q  g/ q1 D0 M" r& Y, D
[
! y3 F& p- u6 Y& @. A- Hset 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)  b' s' ]9 A- A0 \3 w- G
set k (k + 1)' J" m, \8 e$ X7 o, p0 ^9 G, |6 `
]
3 D. n4 g6 [" N; B7 F- `, oset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
+ u7 [3 i7 ]+ ~- t' w) T/ @: qset global-reputation-list (replace-item j global-reputation-list new)8 e2 n  J/ ]5 g4 r- l3 D" J
set j (j + 1)$ i& v. L9 p  X
]
. Y* a- c# z3 m9 `end
: `# c  Y! I2 Q" W9 ]/ N) S! c" Z- b* ]9 E, g) q3 L* _
5 ~+ @: O5 Q( n8 z' h" R

! O# n- j! L! H. y" y( fto get-color
5 l2 c+ q4 K' V. @. ^1 |6 S7 L% ]) S' n' T8 m
set color blue
1 `0 B2 {  {! r4 S5 D/ \4 x
end) b7 d: m- n: R
3 R2 v2 Y* r4 k5 m( N4 i( U: `) c
to poll-class
# f! {9 Y  P. h9 I4 Aend
$ H" T$ y. s" _2 p) X* j) M  {# N$ `& F$ l$ y
to setup-plot1
( S, k% D/ C9 ~2 [% b. {  Y9 g9 t# d& Z
set-current-plot "Trends-of-Local-reputation"
2 z& R8 t: |% l' t% J# R4 ?. c" b
0 a7 B( K, S: B- H/ \  r3 B
set-plot-x-range 0 xmax
/ z! D: t9 ]3 o4 W) {- p

- i. V; R# `1 d7 A3 tset-plot-y-range 0.0 ymax
5 y; r; e0 V( \8 x4 Q
end- @8 Z& u9 n! \" x8 ^; V
" W' z8 v5 l/ x4 [9 Y7 E* I8 J. A) b
to setup-plot23 Y% L+ ~/ a2 T; b8 z/ B$ C" k

: S" `* c# Q! wset-current-plot "Trends-of-global-reputation"
/ e2 s; T+ V8 @+ ^: s

( R. z2 [' B& p, ^4 p& Zset-plot-x-range 0 xmax

% v# S- }) J/ h, r+ v0 O7 e
0 _8 I& C, \% f+ s$ p# yset-plot-y-range 0.0 ymax

$ r  k, d* v( P+ _! M0 G; K5 |6 [; g' Oend
& w. y% `+ Q* f5 q; F+ `" E3 m/ C( Y3 Y
to setup-plot3- U( V+ }3 t  q9 t9 ^; M7 t! R* Z

5 s2 l% S: p+ B% fset-current-plot "Trends-of-credibility"

4 L/ G+ e4 `& J7 \4 f: Y
  G8 }" u) O6 m; l1 L+ ?set-plot-x-range 0 xmax
& H8 Y) v- r9 K' p( Z. D
* }: T( _# u# ^6 k; e5 s
set-plot-y-range 0.0 ymax

: t; n) @# z! o  C. ]end
, X: W+ ~0 C2 N5 B( ?7 D: ~/ [) m0 V: Q; r8 r0 s8 n4 Z
to do-plots" n4 N% ^$ t( k+ \* r
set-current-plot "Trends-of-Local-reputation"
' w1 D: `3 n- p2 i0 Dset-current-plot-pen "Honest service"
* P% {" y  a+ g5 k7 kend
0 ~* C1 j  f$ F
# Q$ s! X2 w) ~: T- B[ 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., r/ d+ f, I8 x5 W3 R7 G
1 U; T  F  w- ]5 ?, o. n1 A
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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