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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:* r5 `% d. |' P
to do-business
6 B( {# \6 }' o0 ?: B" H/ J rt random 360" u% N- |4 P- {6 P$ L
fd 1$ B" M9 _  h! e4 Z6 [. Y1 x  ]  l
ifelse(other turtles-here != nobody)[
) B- T" I2 M8 b1 |. @6 G+ v   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.8 `, ~0 U" `. C8 l, R1 y1 o
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
: G# h' Z7 T1 }   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer+ r5 c, e/ s5 {4 ^9 H' d4 m- ^- e
   set [trade-record-one-len] of self length [trade-record-one] of self( m" r& y( J1 e6 N9 P
   set trade-record-current( list (timer) (random money-upper-limit))
. p" P# G: H9 ?, ^
0 [) G& ~  s5 c1 r! k* l问题的提示如下:
$ q9 z! l4 B& S' u0 k2 R* A" k- ^8 M6 C# {" J  l( m
error while turtle 50 running OF in procedure DO-BUSINESS: B& U' `1 C6 e& `& K) x' l5 q
  called by procedure GO
8 q5 x' j# c* n3 t+ Y7 lOF expected input to be a turtle agentset or turtle but got NOBODY instead.6 R" ?5 V) X6 T
(halted running of go)2 X  n4 I& Z4 |7 N' y6 n
* x1 _( E" ^4 B
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~~
8 F% x4 C. Z+ j- _9 r  A, 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
. L% Y* G  ?4 V  Cglobals[' m. R4 p5 G* F* H7 d
xmax2 L" V# w6 P* a" ~8 }) p' V: x# g
ymax
, x- o; ]/ E. b$ Y' _global-reputation-list
0 l( y4 A2 H( l( ?: ^; n
# l7 D* {, c: u" D) g) {5 @, X9 ?;;
每一个turtle的全局声誉都存在此LIST2 S5 H, A9 I; w& Q. Q! m% _
credibility-list
% w' Z7 p0 n3 q& j;;
每一个turtle的评价可信度
; z& r) a$ ]! V( X" fhonest-service3 f) {+ v/ D4 h* S4 R2 x2 o( O
unhonest-service7 @: i+ s! @) Z8 F" @5 {% l$ g
oscillation6 z- l* \& g6 j1 E5 e" N" b
rand-dynamic
- g1 v: V: b* }]
6 t4 z- l8 S* y+ u. u- }8 ?9 M0 @, W- ^0 D, K
turtles-own[
; j( c& B2 J3 R+ l, Y9 Ctrade-record-all
6 i* @! Y. m3 E; A9 V% @;;a list of lists,
trade-record-one组成+ M# ^9 \0 |# {; c
trade-record-one
: u$ P& b3 l7 f7 a' o;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录# G, V; m: }: s/ u% |  T

, r: v" P8 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]]
5 ~! e& }! F7 W' E8 itrade-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]
5 z, I  q+ _5 [* V( l5 [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
4 g) l2 }1 Y0 ^$ R# U7 Uneighbor-total0 q% w5 H! W. |9 ^8 B7 p
;;
记录该turtle的邻居节点的数目( o: y& z. R" A2 ^
trade-time
$ }1 Z/ ?4 n5 x- d' a2 K; K* P;;
当前发生交易的turtle的交易时间+ D+ L1 _1 N# M
appraise-give4 p" S# {6 o, i5 n7 S
;;
当前发生交易时给出的评价* m9 m8 w: b  {( d: k2 _" |/ ]- n
appraise-receive" A; w' s2 u  `" b
;;
当前发生交易时收到的评价) N' ^6 ?5 o- S9 T
appraise-time+ o9 ~+ i8 ?8 u$ `
;;
当前发生交易时的评价时间  T! a: ~& V3 w9 {& c" \$ n; u
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
4 R# N  j: ^+ |0 F7 M1 z4 {- h% h+ ?trade-times-total
  n- x7 f6 i7 U2 G# L5 C;;
与当前turtle的交易总次数
4 V& T! i  g+ U' E5 I3 Z( {2 `& Ntrade-money-total4 m2 a  G* W, d* F. |- b8 O
;;
与当前turtle的交易总金额4 a( F! `: r2 C: o4 V( L
local-reputation
" ?- `! s  M( l, m- V4 R  A3 Pglobal-reputation
3 K  J  }( T% E0 ?: C! ncredibility& S' S! w% f% d4 ^% a3 R$ s) J% s
;;
评价可信度,每次交易后都需要更新, q4 l' g) n2 v) X' _, k
credibility-all
* v/ k/ _. }2 P9 d. T$ D;;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
7 [/ d  X- ~% \9 V5 g7 j8 ]/ {# 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
6 Y. b4 V# P0 `credibility-one
- _: @7 ]6 n7 `0 N4 Q1 p;;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, \! M7 a7 _: t* w" Y$ c
global-proportion
6 B, Y  t% Q' _) }$ `customer
, m4 V' ~6 \# t7 X6 d$ L' f3 Fcustomer-no
3 J( o3 l  S3 ?1 R! k( t& ltrust-ok; Y2 q- e) [4 j; k- z6 Q
trade-record-one-len;;trade-record-one的长度
$ Q$ Q5 d6 n6 P9 v3 p$ N3 f]
% i8 r- I. j4 q3 n+ z
- Z8 N  Z9 T# [9 K: E;;setup procedure
$ X3 {5 H3 Q% X% G) b$ ]/ h+ X2 Z) y: W, V% t5 S' |. {: M
to setup7 ?6 [6 E1 g0 ?4 [

2 n$ w3 p8 z( d) c  G# H7 @" ica
& O* ^: R8 ]! `. j9 C

6 P( q" L4 R/ M9 ]& w: T! einitialize-settings

; U, X8 E' d6 \) o
, o4 Q) M6 t/ \% q* o1 Ccrt people [setup-turtles]
: j9 X+ U5 s  r/ q6 H
+ g5 s* E0 Z3 [
reset-timer

- O: k7 n6 o; a$ G8 U# b# z# K$ u. J/ R+ k, |, |
poll-class
3 A5 q2 l. Q' H

! u* k% d0 z' J4 Fsetup-plots
, N7 f7 }, I  ?( a- d* d) ~& L
* X4 F: v  Z) l; k& d: I& s
do-plots

: w0 o, E# G9 iend
+ t% n; c4 z0 T
6 O$ o# t+ u; ?* L1 jto initialize-settings- p( X& p* H; A1 [
- }7 B# _6 R3 W" R% P
set global-reputation-list []

8 Y) H8 p2 x0 ]- X) h. O  \
6 \$ n0 y" C; s) M9 ~9 u# sset credibility-list n-values people [0.5]

$ s$ v- u# I( J% K9 w9 Q) J# S. i7 n. j6 n4 m
set honest-service 0

- A& _# S$ ^0 P/ p# }7 Z1 H" y$ h
' T- J8 {: `, c; r5 G+ @& Zset unhonest-service 0
9 d" Z3 o! X* I; A

9 A% f5 p, v2 G' w3 wset oscillation 0

3 l3 n; T( A# n3 z: n0 \6 O
2 F9 d: P2 A& T6 r% L$ dset rand-dynamic 0

& q1 J% _; q; w- Z+ hend/ k4 P8 z8 j# k2 @. N5 S: {; |# k' t$ R

: k/ ?) ^7 D1 ?$ ]2 `1 P1 gto setup-turtles 5 q& A9 T2 \3 E( o& [1 c6 M0 \! C
set shape "person": r+ b$ p, C7 y7 G+ J9 [
setxy random-xcor random-ycor/ P1 \+ R! r9 r  @8 t6 H
set trade-record-one []: U, K9 `, \# r% [
# Y, V6 [9 Y% n2 y  _1 p' q0 S
set trade-record-all n-values people [(list (? + 1) 0 0)]
6 N" A0 S3 {! w
% J- P3 W$ @3 S1 U
set trade-record-current []" p. g2 [9 w$ N% {
set credibility-receive []
, L; V+ _$ E( g+ K/ _: Lset local-reputation 0.5
; ]/ R5 h! V# B- F3 Gset neighbor-total 06 Q1 S2 J& t6 x" a; U  U. e
set trade-times-total 0( [% o! Y+ [" i3 ^0 J: ^
set trade-money-total 04 I9 n( e8 u; R! R" A4 Q
set customer nobody
2 U0 h0 O" A% }8 J7 j$ i4 ?set credibility-all n-values people [creat-credibility]; F" S7 R! G' ^: [/ D. r& F; e/ ^
set credibility n-values people [-1]! F3 d. R+ q2 ~1 p1 S
get-color3 f9 [" l% J+ Y3 v! \8 Q+ E" \) J. b" M

( o& S  w2 P8 Yend
6 n) |4 L+ R! v/ Y6 n% l' Q4 \+ y' p) l& F5 S$ x  D( P- \
to-report creat-credibility
% _: j- H* T6 J! i! Oreport n-values people [0.5]2 {& }# {" j5 {
end# f4 v7 X/ w9 [  g4 ~3 q- W7 W
4 t2 M0 ^8 A, g' `! N% \* x
to setup-plots5 {5 S3 K9 Y1 f
3 s$ ]! N2 `8 X  _% p
set xmax 30

+ e1 m1 q0 d0 H9 p  D  r; W& ]; J8 m" m2 a) x- X
set ymax 1.0
1 G9 }7 A# ]5 m$ o
) [. V+ H/ ~; d8 k: o" Z
clear-all-plots

1 }6 d/ s* T+ |5 \$ ]2 i3 V# E5 \6 Q  d% z2 c* Q' v
setup-plot1
  s$ w/ }) Z/ r3 S9 w! \, ^

; q" h' a: I4 E, N6 }setup-plot2
; k9 G' J/ g5 k3 S. E3 Z& `
9 q6 F& b) a- U( d5 A* S6 U
setup-plot3
1 T- f: S' X6 d% k, M/ L
end; d% P- b5 }$ K) g5 J4 V

5 J) x; L7 O8 N2 G5 U; H& E;;run time procedures% W9 Z" G$ x) r1 `" `) y! ]& L; @

) J* D/ C4 s, Z7 e& D- n. Cto go
4 c2 F! o+ h/ p( _. B. ]/ G0 l
  c4 U, C5 T* Oask turtles [do-business]
3 c" D, i( t+ a+ h8 j# Q
end
4 y9 r4 M& |$ g  Y; }6 S0 E7 s
: x4 `5 @$ m! s0 ?+ hto do-business & V1 O- U" d! f  X5 S( w( i( a
- ]5 E1 c+ v3 n, I( }9 b& X
) v# L9 X- y( O7 X$ P
rt random 360
; Q* \# @  N1 q1 L9 P

  ~0 g; O$ e2 G6 i- G+ Z& ffd 1

. b( C. u$ U. B& S4 O2 V8 u
2 W0 U. Y/ D" f  R$ f- `0 e  ]8 |ifelse(other turtles-here != nobody)[

7 H5 t9 P. W( R1 _. G" h. i& g. d$ N: \
set customer one-of other turtles-here
& K# {5 G" m( c" e1 Z& G+ b& f

0 Q# \  d3 q, z/ X& b$ u: I;; set [customer] of customer myself

, d) O& `5 z* ]
* J/ z" s/ K- n; M% n$ ]set [trade-record-one] of self item (([who] of customer) - 1)
% G2 Q* |. {1 M' k[trade-record-all]of self, K+ x0 p7 O2 h* u) w
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
; J/ _4 x$ l4 ^% G; i: V. g0 Z
8 i8 Y2 h# c) G. l# M& y2 N
set [trade-record-one] of customer item (([who] of self) - 1)
/ ]7 Z/ O2 t* v[trade-record-all]of customer
1 A5 \9 b% p, f! |, |5 ?' E5 L# \6 [
2 {6 Z/ x% |3 f" X" Q1 q. K
set [trade-record-one-len] of self length [trade-record-one] of self

9 v4 U2 [2 N* }! U& D( q* x) d# c' s' g
set trade-record-current( list (timer) (random money-upper-limit))

6 d% x. c3 H* o9 U2 q, Q
# K4 @% b; }/ V3 wask self [do-trust]
) T5 Z7 O* g8 J& L' @& O' }8 O, j;;
先求ij的信任度& Z3 y& X" O" e7 e; r) h7 T+ a/ k
$ a& r# J: p  S. G+ g- e2 h2 E
if ([trust-ok] of self)
8 P3 E5 Z6 M3 J5 @! j6 L;;
根据ij的信任度来决定是否与j进行交易[
9 M6 J  q1 E3 f. o2 t5 T8 ~! G  i' Qask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself. r6 j" n! D# A. o2 \& t* K1 {
) i" t3 N9 J, q  }6 r; U
[

! W0 M# A+ S9 e3 E) E( y7 g; F& x% u* s2 n
do-trade

/ E% e+ Y( J* h, |" }
/ D7 c$ \% [) Uupdate-credibility-ijl

% Q: F5 x  D8 r- `
# b8 g8 ]/ S, e. R  C# p+ ?update-credibility-list
+ G% w* z3 Y8 H' S' u/ b
! U$ n: j; Q/ {7 R  {* `+ C

2 v3 B. A/ z0 B1 a2 }update-global-reputation-list
" X; d& |$ B0 @' r( D0 Q) ]/ u
7 I+ C) p& S: _, C, I9 p* G; f+ K
poll-class
2 E. ?) N/ `+ t. u; H$ I# K
% P# V. R6 y3 N  Y; z" w) z- C
get-color

/ o8 I* }% K7 ~! Y" K& r
0 ~$ n$ W6 C: q* m]]3 s6 @* Z! K7 n' N" J! ^" ^$ {

, s+ v1 }7 C2 E0 z; X9 V;;
如果所得的信任度满足条件,则进行交易
5 D# H+ _1 l; H3 H) \
4 `8 z8 e% i/ x- ^( f" k% l[

- C2 d6 H* z+ M- r: E2 V; a% a/ g9 m  ?
rt random 360

5 Z% T, K. l. e
/ r3 Q! v$ K% ~; d5 H# zfd 1

5 {6 t* a7 ?  H7 a. {; f1 o* t* S& k& I
]

" k, o/ a# i% y3 R8 o/ `! i  k9 P6 N) Q
end
6 L2 [2 r! ]6 k7 R- k1 [& [
# V6 P0 w; C" O+ M( V& c3 a+ n
to do-trust ! i. `  ^/ d; p$ s; ]8 b1 F
set trust-ok False
) A4 W( A6 }2 ~' a6 `6 o0 E* j" L( |2 G- h, G

7 [. g6 w' {0 ~: ]; ]0 h# Z0 dlet max-trade-times 0' D- M( q% t& U) o8 F) x
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]9 Q; ]2 ~; V  s6 Q1 o6 f
let max-trade-money 0$ `5 y2 \+ [# c( ]5 B0 _; y. Y
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]# D5 e! A  @/ _  {( X; f& 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))! |% [! ]2 h2 z: Z0 p5 f8 X  `
! K8 c, m- A/ I) m% W8 H
9 g4 T% c( [1 J; m; @6 V8 j
get-global-proportion+ e! W1 }% D$ a3 M2 ?
let trust-value
! w' ~8 k# W' Alocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

0 R6 r$ v) y* ?  rif(trust-value > trade-trust-value)$ \1 H* P3 a* f: s9 f
[set trust-ok true]
: J8 n3 w# j6 J1 |. [end4 z) |. q9 U' \% q! E- J! D# ]

* J+ M& S  M: E6 Bto get-global-proportion
- k& \7 H+ p: r; u) T/ D, l7 Mifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)! K, k& h- i- L  V+ J
[set global-proportion 0]6 \2 Y; {, _% W9 ~5 h. W
[let i 07 |9 F- c' F$ a: W( O8 p
let sum-money 06 [" ~$ h& G- F0 U) e1 y0 S* y$ z
while[ i < people]
& ~5 u( X' N; n  s" b[- s# t3 x; s1 Y' g) m
if( length (item i
& |4 \1 C+ ]  w, h) O& ~[trade-record-all] of customer) > 3 )
: B7 s$ I9 }4 B- O4 }; a; _; l" x  R3 Z
[7 I  E2 k; w3 i& K6 [# e5 k$ m
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))1 t! T# q: U! z! Y% |/ {2 L9 B
]
9 s0 }' h' m8 G, C: f]6 c, K" G* ]; i
let j 01 U( k- {3 Z. \8 l0 ]  n6 x
let note 0
* s: G/ T7 X; T- awhile[ j < people]3 Q( p/ M* S- a
[; Q1 c8 a& m. Y) t$ U( o% o% ?! f
if( length (item i
3 A) y3 U6 x- W+ B4 |+ r& ~[trade-record-all] of customer) > 3 )
: W" O4 I. G3 `
[
3 a) g. V, L; s, w4 Hifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
' F1 A# N" G, u% X! z! Y[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]* C% G; z7 ~" Y
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]4 y- ^- F* L! ~3 U3 w8 M
]4 D# Q: {6 Y- r+ s1 V
]
- X' T* G7 z( c9 V) cset global-proportion note! @# T" D- S; T
]) G+ Q+ o( Y0 ^: m( S+ I
end( i* B5 \+ d, J
% p5 z  y; n9 @
to do-trade
7 k" C3 n! ^$ _- k& t;;
这个过程实际上是给双方作出评价的过程
" j) N. n4 `# A! M: ^2 }; nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
) {* J' c- ?, }. k6 Gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价, y1 O2 n6 j9 H' w9 I* Z
set trade-record-current lput(timer) trade-record-current2 \7 d7 n  j* L0 c$ |
;;
评价时间+ K- K: o  X2 O1 \0 K% i
ask myself [; {7 B' q6 t7 ^; U7 ]
update-local-reputation
5 p" i/ o, `& Y2 p( O9 `set trade-record-current lput([local-reputation] of myself) trade-record-current
/ R% \+ Z) a3 S* {: ], Q]
. m+ n3 a9 t  _0 vset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
( C: g" o7 h6 P" Q( `;;
将此次交易的记录加入到trade-record-one. ?9 |( m, M& ~+ `4 q
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
; q5 y- \$ T" v' Wlet note (item 2 trade-record-current )
* R- j5 W: v* mset trade-record-current
7 P4 n8 a/ z0 A4 `4 E: E5 B' H5 ^(replace-item 2 trade-record-current (item 3 trade-record-current))

+ K5 ]! R0 X7 j8 Q5 ^' E' Y7 o+ Tset trade-record-current# `+ n( D# t2 m  a+ |  h2 ?
(replace-item 3 trade-record-current note)4 ^7 P  t0 Z, P: M, Y

/ Q; Z4 H/ Q3 C

" M2 C- U6 w6 x1 b$ ]1 Iask customer [
( ~6 a' _6 X% x, pupdate-local-reputation9 o6 G' u& ^! w$ L- y
set trade-record-current9 e/ R4 v: [7 u2 P% T( _% H* l
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
6 [" s. R# q$ C- o  M; x
]  g- x* w! u- T8 i

% s5 V; O6 V  `, |. ~

2 S" |" q  K8 O6 sset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer. T% F9 N, J! Z$ j

) o# y" O2 ^* d4 dset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
) c" x5 a! O! M2 F: F;;
将此次交易的记录加入到customertrade-record-all; L5 s0 V$ T7 H  ~
end: g! u: G5 q' z$ U& H6 m, u) r$ a

6 D# B0 {; B( J: ito update-local-reputation! ^  N" L7 h3 i' X
set [trade-record-one-len] of myself length [trade-record-one] of myself
& t- @. |( b0 Q: ]: m% Y6 [2 [5 a" h
! F2 u! h. c" a) ?: l9 ^, W3 o; L' R# _1 b' E6 z$ s
;;if [trade-record-one-len] of myself > 3
) S" {( h  m9 Q; w$ ?/ u
update-neighbor-total- w  f8 W: s- X' i6 N* p: C: {2 p
;;
更新邻居节点的数目,在此进行
2 R1 N: f: }5 C- ~1 @6 dlet i 3
2 d/ h9 Y& O  Alet sum-time 03 C9 ^5 e8 r' N  e( S+ y& _, B
while[i < [trade-record-one-len] of myself]( J2 y! k4 P5 c
[; M( p9 \$ f  J
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
2 J! |% B( R6 h6 C. ^5 _set i0 j3 R% m) M; f+ y$ U, d
( i + 1)
# n" y% J3 @8 u6 z! c- S
], ?/ ?! s+ a& x0 S+ v2 Y9 I
let j 3
. f6 E' v$ x. u  y- @4 Y% ^let sum-money 0
  f! u9 {8 h& x5 n) Vwhile[j < [trade-record-one-len] of myself]6 @4 j; z, P% ]
[
6 p; D* [7 x5 l: h: c0 yset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)( J& @  G7 Q2 P, K# ~) ]
set j8 z8 C; Y( f6 G5 I# o# I; X
( j + 1)
/ I/ \5 J; C7 [: L- a/ R% L) k# o0 o
]2 u+ K& f6 g# S. X, n; O
let k 3
! ]$ B, R8 h5 W% S$ W1 K* M( `let power 0' m2 x; T! s5 O; D; J4 W2 W
let local 0/ r( P4 J1 ]& R. e5 }
while [k <[trade-record-one-len] of myself]- l3 [' B$ f4 a& x8 q4 ?) O
[  m/ Y3 i6 }% h8 I2 n; j0 G- _
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) + \9 f# Z; z6 w. [
set k (k + 1)
- S0 E: i! ?/ B9 R5 U]
6 J: T2 E& c' S& ?8 |( ^* h) k) Bset [local-reputation] of myself (local)" V. z+ J! t" b9 y% i* C& B/ G! G/ a
end/ Y6 Z) R! u$ _7 P+ W

. z% |+ M; S9 p" D# Ato update-neighbor-total; M, g; u: W; ^* W+ P
! d# {& ?( `0 {+ ^
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]6 k; P& ^$ R! ?* p

( \1 q5 T5 z% A" m: c5 C# b

5 T" H' \7 N+ h  R4 r* B' bend% o/ ^: J6 P# d7 L" E. q

# y1 \  e/ w! _4 K2 gto update-credibility-ijl
$ n5 d/ J- {' b1 X" g( k7 b% k8 o( c) K
;;
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。$ _* x7 M5 O- x1 N4 L% G1 M
let l 0
4 _: D  h6 Y& S( U% F4 O' m' ]: Fwhile[ l < people ]& B( }8 L5 k; A( L! s
;;
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! n2 s- |, l) B5 E$ B% C. c1 j
[; V) A, h+ U* `' g$ z' B# J
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
3 E1 I$ `1 Q1 C+ K8 Rif (trade-record-one-j-l-len > 3)
4 m/ h: r4 {7 c% \4 E) P4 w[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" a, j( T6 e( m6 k7 Q+ Z
let i 3
2 c6 N7 i7 F0 n5 b! s$ Plet sum-time 0
, e3 n! b' ?  Z& Gwhile[i < trade-record-one-len]
+ M* {8 ^, S  b" p[0 b$ y( H+ ?) Z" d4 X
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )' T5 M8 B/ T( u' i7 u6 K) A
set i
, ~4 Q' g! ~9 t8 b6 J; K( i + 1)

. J; C  m8 H* O, h1 e5 [! \$ []
2 i; W* G. a. f* ]: Nlet credibility-i-j-l 0& @3 X7 A* Q1 [3 `; ^& e% o* Z
;;i
评价(jjl的评价)
. a  E5 R6 s6 B1 A1 \0 s. |. Y# m3 Ulet j 3, ]: P. s+ o( C# H: a
let k 4
0 c5 h( l7 H3 y$ D, Iwhile[j < trade-record-one-len]
; m' A( R3 r8 Z9 F# @2 R[+ ^$ ?0 }. _3 Z5 w1 A
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
3 i9 J% y" W" m+ o0 d8 qset 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)* ?+ \' R& j7 r. Z1 H8 f
set j
: P. Y3 V2 p9 |0 a0 D6 o: b: R( j + 1)

, y. p. l& ^0 [- x]0 [. r6 ?1 s2 O3 v! v
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 )): w  [4 ^& e0 g% P5 Y# p

0 a+ {- f) K" l6 \! Z# @( y0 U6 f

9 I' Z9 B1 M" {! F) Y% ylet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))! J% u3 b+ j# V; e
;;
及时更新il的评价质量的评价
  e. U5 y" ], {. D6 yset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]" b- x( B) `/ [  B$ U/ A
set l (l + 1)
$ V' y) G( o9 V- m]2 Q4 x4 p+ z9 L( z; B+ w8 q6 L
end2 o6 Q- |) Z0 S: z+ \4 u- v

1 Y  E; L) A6 v1 d- h; uto update-credibility-list
( @! h! [% V9 j; T, Flet i 08 A: L+ J  e9 s- |- c
while[i < people]- S3 K  W3 `1 L3 p8 \3 I
[3 L3 Q8 l6 {9 F% `, |% L
let j 0
. I" w# o$ k8 T) I; \5 e" glet note 0
- o# q3 x8 C" p  Q8 Flet k 0! @+ H* P0 R/ T6 V# h# P9 \4 C
;;
计作出过评价的邻居节点的数目
" L) M( @2 U7 @4 e8 N0 |- G. Swhile[j < people]
" }1 K6 L0 j7 V[# h+ {0 T/ k. f- h( X! @
if (item j( [credibility] of turtle (i + 1)) != -1). y' @, ]& o7 I, d* U
;;
判断是否给本turtle的评价质量做出过评价的节点) k+ N+ Z3 F0 c5 v" E5 @! Y# x& L
[set note (note + item j ([credibility]of turtle (i + 1)))9 V  K8 n8 q% b9 \% e2 U0 [
;;*(exp (-(people - 2)))/(people - 2))]
0 z. p- T/ R% t6 r  W- z7 U
set k (k + 1)
1 ~- Y) e6 g4 P) [0 y]. G6 a$ i4 o, w
set j (j + 1); ~: o- x4 g! l6 m* j5 E
]
& h5 x4 m7 L' S2 J, Oset note (note *(exp (- (1 / k)))/ k)/ D/ E# G" I, a( m( T
set credibility-list (replace-item i credibility-list note)
" z/ z! Y8 v9 G$ ?+ jset i (i + 1)
3 E+ V6 w, U2 n% ~]) G2 T- ^- s7 T; Q
end7 I  [" j5 Q7 X: q: m+ L2 E
# `) f/ z5 |8 e
to update-global-reputation-list
" ]  b2 G7 l6 n. D; ilet j 0& }( ~/ O) a+ T
while[j < people]( Y% E/ ?' L" c/ a; h) \4 _* C
[! D- X- [0 X5 r9 `" t9 `
let new 0/ @" L  w. w& M1 j+ }
;;
暂存新的一个全局声誉, E: T- v+ |. R% a* L
let i 0
9 C' ?' S, N, S8 K! ?1 Slet sum-money 0
  P( U$ d" J6 y  E$ h. mlet credibility-money 0
5 p7 T. e0 V8 @+ Z- e8 Owhile [i < people]0 W) d$ h8 y6 D8 M2 G6 k; d! G
[; _5 ]( a" p2 v8 W9 b) I. h
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
* `0 q  X8 \- x% K* Bset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))3 X7 D6 Q) y; P( l, e! E
set i (i + 1)
2 K, P" O; ~1 a' D2 P]/ h/ v3 o* S% ~% v+ b
let k 0+ @9 G# {3 o) L% S0 ]
let new1 0
! t5 ~, l# H1 m" [3 S0 j4 O2 ?while [k < people]
8 D+ Q8 }7 m, M  R! \[6 h6 M' ?# h7 Z, l! ~+ u; x* Y. ?! p
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)
& u/ @$ F0 {! s' E- N1 z# Z, @set k (k + 1)# l5 p: f: f! t. [
]
& @$ q$ v6 ^1 Z) d7 {# W  Tset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) # m& A9 K1 w/ F: r
set global-reputation-list (replace-item j global-reputation-list new)
1 Y% P3 e( D! yset j (j + 1)0 m5 Z& [, @/ Z+ b
]. f" p5 b. t2 F7 H  T
end
' g2 e1 U# C' r/ N, J3 N
# w5 R; c) W( p2 L0 d- h3 t. @$ \
+ b) [; a2 I  s6 }# h7 U/ C, I; v- }. H/ Y$ m' S5 h" K/ l
to get-color) F: R+ Z- q' l* ^7 P/ y) d' R
: e; i1 P6 G5 V9 F* p; F
set color blue
3 Z& B6 a: q  [, b
end9 ^8 A( m- _0 N, Y" D

* m5 z* `; W3 i4 W5 I+ ^to poll-class
% {- O2 J( J. f$ ?% Iend/ q/ T7 O: Y+ W9 P& l4 ^
3 s' b7 o* J5 j
to setup-plot19 y+ }9 k7 S/ k: w$ M' V' U
& x) T% X- W5 g4 J! T4 L
set-current-plot "Trends-of-Local-reputation"
; P3 S' m% n) ?) t& ?
; n; k: _0 L, Y# ^1 \
set-plot-x-range 0 xmax
! Q9 h: h( o' ?) v9 J) t
, \. O, J# `/ E* x' m# Z: B
set-plot-y-range 0.0 ymax
6 @/ E2 |% j# r; u) M' ?
end/ R& ^2 \2 t) |* l8 Z: y

5 S3 X4 z8 T8 D5 a7 c+ qto setup-plot2
3 h$ I$ ^+ c/ h* m# c7 l
" Q' \- u( t  A+ W: f: D/ aset-current-plot "Trends-of-global-reputation"
1 w" j% Y( a5 `0 i) v) Q. t
9 X( P" Q3 V6 o1 C- S  p% _2 r" p
set-plot-x-range 0 xmax

. q7 d; B3 G( i- d
+ U3 N  u" Q) X) Z% A. j1 U. Fset-plot-y-range 0.0 ymax
+ T. ^0 S7 U' q3 m
end6 _7 k; D; i0 E
- n6 w/ Y; a/ O( d# \* e& i
to setup-plot3
9 T, G+ ]( _6 ~2 m" V% U( e0 \6 S0 L% z% E) c" P5 L: F
set-current-plot "Trends-of-credibility"
+ e" z. u. S  v+ M  o/ k, m+ E) f; k

( v  I/ S' P; |% m$ R% Zset-plot-x-range 0 xmax

3 L: m  C, I' d, x% O9 G) j
3 e; U; R" M% `1 r, Cset-plot-y-range 0.0 ymax
* z) f- m# P# o- @$ b* F; G* \
end
7 F3 m& s6 Z6 x, v1 U" k, s$ |2 y
9 i' V1 b! w& U+ k! @9 cto do-plots
* v+ |. H3 z" |set-current-plot "Trends-of-Local-reputation"# L4 H, v: b9 _  |  V$ m
set-current-plot-pen "Honest service"1 o+ l& q/ E; J+ m/ T. ^  V
end4 x+ w+ a+ s. _( q

) N6 A: i4 u! z1 l/ ^* v  q) c# P[ 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.
  {3 T- E5 N# ~0 `
1 r9 w# E. O. e9 Z( Y$ o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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