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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:
( n# n  W* Y$ X# F. t* T& Jto do-business 0 @: G! a. I" a/ B4 `0 t) V9 k' G  p
rt random 360; I' w% c$ e/ X: V7 T+ H6 e
fd 1- @( w3 m/ e3 W! h- j
ifelse(other turtles-here != nobody)[  X2 {- [6 ?# Q7 }3 Y
   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.
# p3 x/ B0 Y& L3 ~   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
. A4 m( \- V' m   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
; m& j* f' S; g   set [trade-record-one-len] of self length [trade-record-one] of self
$ s5 t+ Q. p: X) ^) Y   set trade-record-current( list (timer) (random money-upper-limit))" F4 F4 r9 P7 T% [+ Z# p
! B1 y2 ~  ]  {) o
问题的提示如下:8 r0 _  {. t7 Y  J5 k& R1 t

7 e  \6 I5 l( l0 }% berror while turtle 50 running OF in procedure DO-BUSINESS6 `- T9 k3 \0 G* u/ W" O
  called by procedure GO
# D# E" t5 w$ l4 z& tOF expected input to be a turtle agentset or turtle but got NOBODY instead.
2 x2 Q, L( p4 e$ p! L; h9 q
(halted running of go)
3 e9 S: Y9 P9 S5 C
, I( ?; E- P) u. Z' u3 v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~~+ c( z" g/ t4 w( R
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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参与人数 1仿真币 +30 +2 收起 理由
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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
- e2 X! f$ @( jglobals[
" X$ h1 h& D$ d  @: j4 v% ]xmax' m( U, V5 r* a0 I8 F! s8 i, \9 H& s
ymax/ _, k8 m  f+ ~. ]) {7 `# n
global-reputation-list6 f6 m3 a) N! ~
& g( P+ h+ f' e9 ]2 P; }2 Y
;;
每一个turtle的全局声誉都存在此LIST# u, K0 o9 _4 a4 K: f/ N" Z4 _; ?
credibility-list
7 x& x# \2 P4 \- d& Y6 v6 t;;
每一个turtle的评价可信度
& K  n: N8 M$ i  R2 z. O$ Ohonest-service
. f- B- D% W' l5 G' x4 u$ V% sunhonest-service6 F- |% \0 ], e; a
oscillation
0 C- ~( F8 n. u/ S6 o- Krand-dynamic
6 d! G, H, m- p# l]* o. ?# M! ?. I, v/ H
8 d* @# ~) o2 ]' j( w/ G
turtles-own[
& I* v$ Q$ f2 V, z, Itrade-record-all2 {. T* P& P" ^: f) D1 S* e
;;a list of lists,
trade-record-one组成
# i9 E* W3 \+ O9 a( O' b; d- Ytrade-record-one
) D& t5 M6 Z" h/ T5 {;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
# a; f& h( s( H2 l- v; K: {
+ N2 r  \: }! h! x% a* B  U;;[
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]]  M; h# w1 j: W1 L
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]
# ~3 j; {1 T4 Z$ c8 E( x7 lcredibility-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; M  T* w' i$ |5 |4 n( Q
neighbor-total8 [: P0 J9 S  d7 N9 J3 w3 z
;;
记录该turtle的邻居节点的数目3 t2 y  A6 b, |
trade-time( e. i# e4 [( Q: N
;;
当前发生交易的turtle的交易时间$ X( @8 a9 c$ l! _; Y2 \
appraise-give1 {# P6 ]7 r# v1 {  v$ v
;;
当前发生交易时给出的评价: N# I3 A0 z" X* p' ~. K
appraise-receive- |' D( L( Y& l+ k# Y
;;
当前发生交易时收到的评价
5 _3 r! O  a9 v7 m# oappraise-time
  Q+ d  P& [% [/ ]" c6 n7 G;;
当前发生交易时的评价时间0 W7 D5 b7 I( U3 W
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
0 ]# @- Z6 n8 Z5 mtrade-times-total
. v% U3 `5 J- h' G5 v4 P;;
与当前turtle的交易总次数
  ^* n8 |: ?6 [; [- s8 Ktrade-money-total
, ?7 v! r) s5 P, V1 S6 Z9 B;;
与当前turtle的交易总金额2 v9 C( G+ X! `4 O: v0 U
local-reputation
! M( U$ Q2 c" e8 C# {2 r! uglobal-reputation0 m# C4 T. w: z# U( F4 C
credibility8 L3 Z2 z: q% N/ l' Q
;;
评价可信度,每次交易后都需要更新; y! g. \! _1 {' A# |
credibility-all2 c: {! W- i4 h) 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3 g- E5 g# b2 v( l* R

" Z; H# K$ x* {! \;;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
2 x. m3 N, c& ?, |% k: zcredibility-one) f( h2 ^. X* |* l9 p/ p; B
;;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
- z  @- }! F* L1 I( cglobal-proportion4 A& n) A( H, Y- X6 K7 P
customer1 |" X7 T4 t7 I# g/ q
customer-no% L, M) g2 h: W+ L  O4 J0 U# w6 B
trust-ok
6 v4 e% Z% }# D% S( j7 u3 Xtrade-record-one-len;;trade-record-one的长度
7 [' f4 l  G3 Y  E9 q; }" N]
, r( }, O1 r: j7 b9 v. \0 h6 P6 |; S
;;setup procedure3 f8 D3 r" G$ v. \7 c5 O% B  n" c
- M) [  S! g" Y+ H. E
to setup. P( d  w) L) y3 f# i0 u' f

* s' ^4 c* ?# S4 @: a; @6 oca
& U' B( a3 S1 n6 ?9 z) r* c- a

  e" `5 Q/ ?5 Y/ p2 Dinitialize-settings

6 Z! ]% J8 P2 j; g3 d4 A' ^% C( x! b) @4 ?" n1 \. |3 W& `! i
crt people [setup-turtles]

$ G# S3 v0 J. r% U1 {$ J
/ J. }1 w6 `7 Qreset-timer
! m6 a0 b. [; f; }1 ?

7 w6 s  Q  T/ ^poll-class

2 n8 c+ y2 t" R" r; W
+ Z+ F: I0 i3 Y2 b' Ysetup-plots

" p7 v! n, O; G) c
) m. z3 ^5 k+ K! R" Q  pdo-plots

- v& G6 |2 V% C# f# M( Hend
  p, Z& y0 U7 G, P
9 k/ E/ {( B" }5 L3 D* ]to initialize-settings/ |9 |" F2 ^( O

: U( d" V3 p; L" `set global-reputation-list []

$ s) I7 D1 N/ z& B6 A* R  f% F9 U8 T4 E
set credibility-list n-values people [0.5]
4 a0 ]" \% ?) Q/ S+ ?# i

1 v  f! R/ T5 E& H7 v  Eset honest-service 0
6 r* m3 p4 T9 M/ u, X

9 q/ M8 {- s7 u$ F4 H( _& \# Lset unhonest-service 0
1 g: _# T; \8 S  n
8 U4 R$ {+ a/ f
set oscillation 0

7 F8 C0 f  t5 k& k% m" T1 }
! e# K" o' A2 r' {. eset rand-dynamic 0

" o/ T: [  B& ?2 ?4 r$ gend* M3 L& n3 l9 W8 U1 o+ g) s

0 c# O# V* k+ d8 E. P1 tto setup-turtles 0 S. }2 l$ d# ^2 {. V  Y4 ]9 g1 N
set shape "person"
; D8 G3 W- s+ D( d; J$ tsetxy random-xcor random-ycor3 w( S9 k2 v1 f$ m# z" k
set trade-record-one []
" E  P# \+ f' n7 Y. @
( C6 k) S. x* B. o: Y9 B
set trade-record-all n-values people [(list (? + 1) 0 0)] ! u) J4 d% P3 @3 g$ ?5 O8 Q$ ~) Z

) V9 C' p/ y/ W" T8 Fset trade-record-current []
7 @; W: g9 H2 W# [4 Oset credibility-receive []
3 w- f& ]" m3 nset local-reputation 0.5
% T1 c3 R2 I6 K' X- r' ^" Xset neighbor-total 0
+ y% x& w. e. \" I3 fset trade-times-total 0
# x- e  p! R0 m* g# ]set trade-money-total 0
" ], j& S% j7 a( m) o: y2 p; cset customer nobody& @5 y+ z1 u, n' f& Q1 u
set credibility-all n-values people [creat-credibility]
" W8 \' c8 h! hset credibility n-values people [-1]4 g; M1 L. w9 @6 P0 I4 u/ a8 o5 T
get-color/ t/ D' S% S" `0 G. T  f/ Q8 i

" [: V9 w& N2 A  U6 P2 R1 |end3 @6 j4 g- B7 q) m/ x

4 v$ X2 ~# m- hto-report creat-credibility
3 w1 n9 ~9 i5 C* Vreport n-values people [0.5]
4 B4 Q: t0 \4 |% r/ ]end
# \* o( n0 q7 z' e* {+ `( C9 b! d' _; {& z0 {$ T3 \
to setup-plots
8 c7 c$ [6 l3 s$ O
7 M/ y; H3 D( b  B' jset xmax 30

9 d9 U& Q" o2 G7 [: ]8 x! a# b, f  e
set ymax 1.0
" B* C' s  M6 M( }

1 V7 W- i( y7 i. J0 J7 ~clear-all-plots
  M4 d: x9 f7 ~/ f2 s! E- H, g

2 k* f6 i: v' s( Dsetup-plot1

; v; K. L2 b5 \- [7 x( G
" q: @  p; j4 R7 ~/ q1 `7 A+ y6 ksetup-plot2
% \, I8 B+ ]$ l0 A: V. h
4 W& B, ^* m" N' I. L
setup-plot3

- \* ]  o; C. l8 Zend
# m. c' A9 g2 V6 M. }+ w0 u( W/ o
) @# q8 O6 ]' _/ I6 t;;run time procedures9 M" H3 W' I. \: D& |6 Z8 W

6 J+ l* p, m7 C: q, |to go1 j$ B2 I; _3 n4 e& q2 H
* N5 L- e1 M8 q* z1 Q1 @1 c
ask turtles [do-business]
9 [" _3 m# \4 H
end
$ s; F& f8 G, F  [( `( H& O  d& A( E1 N3 f" P- O9 H
to do-business
! h# h# S! B  q. v2 c. R
2 g) m8 N6 l# n9 K
* n- j3 t! D3 D: |: P2 D' C9 |
rt random 360

0 G% q4 B: u, O# R+ S) R" c7 U: {& A' W2 f1 Q! w
fd 1
1 H  G+ l, M' Y3 C% r; j! ]& f

& J/ S' O2 s, G* y4 Pifelse(other turtles-here != nobody)[
2 ^: l& D) h) f. Y/ C6 H

. W) p+ C8 P& ?2 g" b7 Aset customer one-of other turtles-here

/ s" j9 }7 Q; B; V* Q/ L, U  L; X; }: `, H# f- ~1 J" K! S5 Q9 v8 R
;; set [customer] of customer myself

9 S( h. d' f5 n( O1 {
2 R. S- B7 @2 e' ]7 t3 s1 C$ a3 Iset [trade-record-one] of self item (([who] of customer) - 1)2 `' M" e- x! W7 }
[trade-record-all]of self
6 v. b& d6 d; ]; l, p1 @;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
1 H5 j! z4 e! P* J
3 Y; A0 v$ r. K# Q8 y" b. c
set [trade-record-one] of customer item (([who] of self) - 1)% d, }: ~5 R1 Q& Q: k
[trade-record-all]of customer

% V6 A% A' E4 ^# M3 }( c
* I3 ~1 B+ n' F2 t4 ]) {set [trade-record-one-len] of self length [trade-record-one] of self

; _" @, M/ }7 E2 |6 @& M7 U6 B2 I& `3 t
set trade-record-current( list (timer) (random money-upper-limit))

- ^: j2 [: S% ~' ^9 G3 H
) S) |( Y2 _2 A& s: \( t" _ask self [do-trust]
; n; b) q5 L7 S;;
先求ij的信任度
8 H, s$ V$ D2 z  W( x  Y) \9 E* v& Y2 H' g# B; R
if ([trust-ok] of self)# F; w. x' y3 y2 g1 g
;;
根据ij的信任度来决定是否与j进行交易[
0 I0 t% A( P/ W7 l  Pask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
/ u5 u1 |# m# `' \
4 y) o7 ^& |3 b' e[

6 i; q- N3 z0 ?7 J
' \( i! I) l1 p; W+ H7 Q* Ydo-trade

( B- K6 p4 V* ~+ j2 S% F
( ^! K% D  y0 f0 j6 x- R& ]update-credibility-ijl
9 \/ ^8 t9 r: \; d$ B0 i3 I
) ^% [: S; }$ h" B. {* Y3 f
update-credibility-list) V( M5 d6 E2 ^3 n. y
- O( g; s4 M! o0 ]! L: ?; c4 s
3 |) L; J' c! M) m6 U& K
update-global-reputation-list
% M7 O0 h* E. e" _+ K

  L2 Q* L9 y( I5 o! h: W$ ]poll-class
, @" o6 w3 i# G+ x# |

5 E* }% X: r: }. A: {get-color
6 K, s+ T4 Y+ F) M4 V5 E
7 c: N" n( L0 }  Y8 m3 J; b) Y
]]: l. X1 [$ F3 r: p! J4 |4 u' y5 d7 N

2 [- T& S( \6 z& K$ O;;
如果所得的信任度满足条件,则进行交易
  T* \4 |# @; E2 I: S. P7 i
2 Q6 \. H! v! S4 g2 s6 ]6 s% h[
- s$ @. w# A$ u- h: C# D
' ~0 c8 \( }* ^9 z, o! H' Q
rt random 360

" B- Q. o4 W' y5 G" z1 x
9 V5 ^- v4 [% K* Ffd 1

/ N# [6 G: @8 U# Y( o, s( O
! \2 x+ S. w- h6 H  ~( x1 ~, V) E: j]
; p% V4 @) r& ]! e& u# k
# ~  u8 F7 U6 K6 K3 |! _2 E7 y4 h
end

: w' E% f8 y& \% b& n7 K8 h+ [  {+ E) s
to do-trust : o) {6 {6 `; Z2 f: R. z
set trust-ok False
; v+ M6 r& V, z3 V6 i4 T
3 H1 F# I0 x, ?: A2 j, ^

3 x; ~! }9 v% Clet max-trade-times 07 G6 m4 E5 {5 D- E; ^; e; \
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]9 v+ j1 Q# Z: f4 I# `! o( d
let max-trade-money 0! \! h2 P. v' \+ Y. X
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]2 @' a0 v! r6 u& \
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))$ Q6 c% |7 M- d" g% {4 _

4 b) R7 m; K; L! ]  L

, a$ Z8 |. F3 N' M# f( cget-global-proportion/ U( _! u& N& T& J6 v2 X6 U
let trust-value
& d0 Q  Y; T" 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)
  e: D; W4 N4 ]/ o) f
if(trust-value > trade-trust-value)
% B3 j' r1 y* h5 G) ]2 F6 R3 q3 X[set trust-ok true]
( v2 E2 ?! E3 H0 K- Send7 \3 B' g/ `2 V

: W# P' w  s. s2 s% [1 Nto get-global-proportion- I/ m  U; Z- j+ b8 T3 M
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
' ]; F4 T! h; O" i0 h[set global-proportion 0]
" v  u4 k# u  q[let i 0# H; @6 L9 t9 H+ N" W2 P
let sum-money 0/ N( F( T, d0 T2 ]3 K6 t
while[ i < people]0 f' ?2 n! H) [# M; f
[& g& Y+ ^- j9 \0 g/ `  @' Z
if( length (item i6 l7 i5 C7 N  j# p7 N
[trade-record-all] of customer) > 3 )
) G  ~7 t6 W1 D2 M  u' u6 B
[
3 h0 n0 X0 X* V) Oset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
# q6 e; o' m* m5 t2 K( x4 j]3 S8 x4 u# h3 K# M8 @9 c# g
]
* b7 }4 U- q% }2 O! W9 b, z3 M( Xlet j 0. x7 W# s. i( b
let note 0) s( {- N- z" e
while[ j < people]
$ x/ G1 P" S( I2 e5 J[) l( F5 A5 ]; `& S; u
if( length (item i
8 M+ i) A( u0 U/ V/ J0 C[trade-record-all] of customer) > 3 )

1 H- C: K/ ]; N[
! D( B' b1 Y. ]& L4 ~& ~# w: Xifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)- S1 o5 ~+ t5 O" q9 J4 V
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]) L! Q9 u2 g1 c" F8 f
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]) D  B9 w3 n) D2 C" R) n
]
* @# e& q1 _2 I; M9 z7 D: B]& H) Y; G# i3 J5 _8 l
set global-proportion note
: d  P$ }! x2 R! V+ S]
" g6 y9 Y" |9 ~7 Z- i) G1 x6 Lend
5 d$ Y% M' i( H) U, i; N6 C5 v5 @3 z6 p" K
to do-trade  Y( S: q2 Q) k( F- k1 {- e6 w5 h
;;
这个过程实际上是给双方作出评价的过程; A; [- L: F; z% c' M; c" {- k8 H, r
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价. t7 E! L8 ~2 E5 o
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价. L. l8 Y  R2 ~- |6 f7 l
set trade-record-current lput(timer) trade-record-current
$ j" w5 E( o$ [, U, u. r7 a, Y6 ?4 `, E1 k;;
评价时间
& A1 S! k) e/ X, V/ \ask myself [
0 J/ e0 C4 j+ Y- P2 h5 oupdate-local-reputation
! n7 Y: @# w5 W6 O. pset trade-record-current lput([local-reputation] of myself) trade-record-current7 H( v3 [" v5 N  p
]
" Y' V4 r( u# z0 y3 [5 A" Kset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
/ u- Y: V" }& N;;
将此次交易的记录加入到trade-record-one
* c; w1 t7 e0 f: R, A" ?set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)/ u  q. Y$ ~. m* Q+ {; S* ]
let note (item 2 trade-record-current )& s+ O3 d; b# Y1 h7 y8 s
set trade-record-current0 Q% C6 n9 d6 n  ~: o* r  h& b
(replace-item 2 trade-record-current (item 3 trade-record-current))
8 l% ^9 m* w6 _+ F# z+ B6 A
set trade-record-current: ?+ j, B# i7 C% p% C
(replace-item 3 trade-record-current note)! c1 J2 H9 V- w1 W& _& Y+ l# A
/ f* w# L- G# P: H4 Z- R2 n  F$ O6 I

! u! }3 P' R  [0 o  [$ Q' Bask customer [
% N, U6 N. S: O( n3 g* Zupdate-local-reputation/ T: |+ Q) z7 [0 T2 Z! G2 f: M
set trade-record-current
! i5 e$ K& y# U9 s(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

! R1 D  u  H, Z" O( l" H]2 e9 N; r, r7 G9 u+ Z) a; ?9 c

+ `  I3 j9 p8 l( `# M" a
. U5 w5 ?5 u, F6 Y7 g/ {
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer; j% N6 u! P% s/ h. L

' ?+ J: I' ^7 [* Bset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
% t( F; u4 o) A' v5 O' l* q: p;;
将此次交易的记录加入到customertrade-record-all
% w% P+ }  E2 B7 Vend
5 d. H! s5 X& ~* E( v1 _9 W% w, E  h0 {" w$ k# y" o. q8 u2 F: R, f
to update-local-reputation. \) Z* ?# |0 x7 J0 [
set [trade-record-one-len] of myself length [trade-record-one] of myself
. D6 [$ I9 T  X2 q6 T! w7 s4 W8 {) n
- `9 R7 T7 |: @. A5 }" v- \
;;if [trade-record-one-len] of myself > 3
3 {3 b" [7 [# P2 B" p  g6 W
update-neighbor-total
: R- O6 W, `3 a6 U;;
更新邻居节点的数目,在此进行8 ^, ~  `+ |' A* R* \& S6 P
let i 34 m# ?, N3 i  z$ E/ d
let sum-time 0& G9 u+ q1 d# P2 ?9 d; s
while[i < [trade-record-one-len] of myself]0 [5 q9 b) R) q' A) J8 Z0 ?% m
[
( R3 d+ G9 F$ M5 d9 Sset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )/ T+ ]8 M2 c3 A2 X! B
set i
+ [7 y* [6 C9 P( i + 1)
% _) s# g0 _# \0 _" _  x
]
" t2 s6 D/ \8 h4 P/ v5 |let j 3/ ~( n& X: V) H- T
let sum-money 09 j+ J( o0 Y$ E% ^
while[j < [trade-record-one-len] of myself]
/ B5 f9 t7 `+ g, s( l[
7 Q( n/ i. j9 m+ jset 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 O2 H# U& H/ p0 O: Vset j
% M5 a" B: g. i6 P# E( j + 1)

  \1 Q0 M% ?1 V' ]6 o- h& e# O1 x]
6 r5 l; D* a+ mlet k 3
' p2 B4 @& f; J. i0 }let power 0
% }: Y+ Q8 {- v4 ^' A; h2 U* Vlet local 0
5 L5 e6 H, F  V: J- jwhile [k <[trade-record-one-len] of myself]5 r( c; k* r/ _2 A2 p4 _
[8 s( E! u, |% H( M
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 d0 L$ k9 h  h& G( L
set k (k + 1)6 k/ |  t1 r2 W; t. x2 M
]0 }* ]& T9 Q5 D3 w, }. X% s! W$ ?5 b
set [local-reputation] of myself (local)/ _* ]  Q  k; a6 x
end6 z: X* _( `9 ~. G- w
$ f. O3 y6 h' {/ u$ @. q) Q7 [
to update-neighbor-total# _3 N( _9 F# f
! G  R1 Q' `' l- _
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]) Y1 X% C5 l+ `( ]  s+ _. Y7 g
+ Z/ g3 o* U5 T

8 J4 ?* k8 M" [0 Bend% F8 F- s# {: }

: d0 @0 I( y2 t" Lto update-credibility-ijl
" `8 h8 m9 }+ Q% j8 J" O. i. d/ Q" U
;;
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。+ g' L% A7 v  h6 a
let l 0! \7 K0 X  R3 i0 M, ?2 W: E& D$ h
while[ l < people ]
; g% o3 O& G, N. J! {% @( L+ N8 {;;
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
4 E: o$ l6 |' J  J/ V9 _[
# T  u/ l2 m( {, P/ l: Z$ vlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
* B: y3 n; o8 Cif (trade-record-one-j-l-len > 3)# P& u' ~) E" [' O- z4 t$ h* i7 I8 {
[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
4 O* t& ]2 c) Hlet i 3' |' V0 U8 N2 D7 H( c
let sum-time 0
; T. d' N3 C0 Y& Hwhile[i < trade-record-one-len]6 C$ ?! \1 R7 U. X5 X" }) i
[
( p6 W% g! n( F2 r% uset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
* r7 _" r( p" P) k* f! `0 vset i' l6 ~" f/ j6 S0 [4 k7 A
( i + 1)

+ B# b1 u; r5 B3 A$ ^8 D" d]
: U* t/ j8 q$ Mlet credibility-i-j-l 0
1 H, g7 c: b' i( t3 B* ]1 U' D;;i
评价(jjl的评价)4 _! [/ }& R- A) z" a$ y) U
let j 39 e/ Y, n  |3 c8 a
let k 4
. H% f7 U9 R9 U, {2 hwhile[j < trade-record-one-len]
5 x6 F6 a$ Y6 o4 T[; {; q6 i  J% U6 l1 o! w+ Z; P# 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2 n5 f2 I& ]+ }; M; u
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)8 V) `4 |" D$ g2 l
set j
$ z' m, B6 f" f) I5 t0 r6 h( j + 1)

. j. Q) F# L' I5 f6 l]+ G% o% ^) R3 v4 v1 X
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 ))
* h5 r4 o# Z0 Q5 r4 O  S- h& J9 E$ I) `+ w; q6 \/ i/ O

' `; f2 I% x/ D+ @, Wlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
# e( K) N2 A3 Y;;
及时更新il的评价质量的评价0 a  z6 B  Z/ d: D& ]6 D
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
% X  Y  u1 k! H' Hset l (l + 1)# G: W9 r, _* R  l) g
]; S1 b. C7 J8 O* O
end/ b7 f- L' I2 V, L/ P6 o2 T. b

" R  D  v& d8 S7 lto update-credibility-list
  d& Z7 g) G5 F5 r) slet i 00 J( F* j# L5 o$ _
while[i < people]; w7 s: c& ~7 P! o6 l
[9 v" u3 ?% S+ R6 s, K' I, @$ }
let j 06 m  |' J- m) C9 ?6 f8 m
let note 0( b) t5 e; S) P! M2 o
let k 0
7 s% p& m, m" N5 N/ \: l0 F" H;;
计作出过评价的邻居节点的数目( L6 Q" @/ p3 v1 f
while[j < people]. f- B) W6 u* {& }
[
0 L( \- w& K9 a1 X% Z2 k0 l4 _if (item j( [credibility] of turtle (i + 1)) != -1)
: x8 l0 t% g; l$ E, {;;
判断是否给本turtle的评价质量做出过评价的节点4 {5 j6 ^' |' ?( B1 x/ w, x7 A
[set note (note + item j ([credibility]of turtle (i + 1)))1 {: a8 g& S" R5 k6 D' N5 i
;;*(exp (-(people - 2)))/(people - 2))]

% }2 _, e5 C8 zset k (k + 1); o! K) Z5 Z! W/ Y( v
]2 \# ~& M4 K6 q% }5 i
set j (j + 1)0 c5 Y8 Z: a7 s5 M/ A
]
9 i7 m- d* i6 m0 _0 k3 zset note (note *(exp (- (1 / k)))/ k)2 ?- A, i* `2 k* p( m& d! V+ A
set credibility-list (replace-item i credibility-list note)' J% Z1 w& k) k& z6 u6 a
set i (i + 1)
8 ?0 a- [3 z. [; ^+ d1 H]/ r& }% A% `) G, v& `$ Y3 ~* \3 a+ G
end
/ H5 q+ z$ t' m2 O4 q1 d0 g) v$ i
to update-global-reputation-list/ N2 Q- x1 R3 d9 x$ w
let j 0
% W$ q5 y4 Q+ a1 |& ?while[j < people]' k9 a2 w6 ]. Q& C5 P( I* H
[
+ \4 x5 T5 U$ @4 rlet new 0$ O9 p: k% A& c; y
;;
暂存新的一个全局声誉
' \: V& A) Z. s9 ~let i 0
  B, S! m1 u4 \1 Elet sum-money 0
& r+ W3 b4 C5 a5 F! Q1 wlet credibility-money 0
# m& {& w9 _4 J5 J" [( E2 J8 kwhile [i < people]9 B: Y5 Y+ `/ Y$ g) e
[# X0 q( [+ E# e, s) F0 c
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))( u# y/ K: }2 b, ?7 J  f
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))" C3 {1 X5 f& ?  `. [  n- Y
set i (i + 1)3 r7 F, @% M4 L& ~- L* g/ ]
]
0 x8 j1 _# R6 w& A4 [2 B( j$ Alet k 0! ?) U" _0 W: g0 [) P. v
let new1 0* y6 f+ a: H* c- R) |0 x
while [k < people]
8 _$ M. G' W9 N! h, @6 |[9 m* ]: H& }( \  {0 Q9 m& j( h
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). j9 x. g/ c# f( t
set k (k + 1)
+ L  n3 ^& B9 g8 \" H]
) v: D+ I1 t- Z: p( Kset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
0 h9 u1 I1 M" I  o$ ?' R! s( dset global-reputation-list (replace-item j global-reputation-list new)
3 T9 S; R3 L/ Z5 a2 B( gset j (j + 1)
9 r, o* }" V9 G* u$ ~* T4 h* C]
" I/ x0 ~. J2 L0 @end. B% |' o& U3 e" q: X8 C

4 l8 ?0 N! F) w- ^- r9 b  ^  Q8 |4 v6 f; \) I9 a. H; K

: k& ?& W+ \' `to get-color1 [4 X9 C8 E# G$ m7 w
! y3 M* f$ z/ g! P9 c6 V
set color blue

+ {  t* e% y& L% E" g" i2 P& Qend
  D) a3 p& u3 Q$ x! L/ d1 w0 k" \: Y6 T. d
to poll-class  c: ]7 \% K1 i* l$ d
end! b& X5 ?2 J* Z+ l2 \  ^" p0 r) S
, v$ b5 L9 q) Q, v4 n% {1 w$ p
to setup-plot1
% E. X( t2 U2 O7 P- |+ y- E, T% S% {# |. V
set-current-plot "Trends-of-Local-reputation"

3 X3 H: V8 d3 _1 k( j* ~' k$ }  w1 r
set-plot-x-range 0 xmax

' B4 u8 c. H/ w( T7 C
& ?2 b. c7 T8 Z8 [: G- l: cset-plot-y-range 0.0 ymax
) O- C& S% D5 |" M! ]. ]4 P( L
end0 T5 o* a8 X) M4 [+ t
! Z/ f, i: u$ }7 o
to setup-plot2& n  ]+ S. u) z& u% Z
* M5 ~4 I: s6 [1 D# u
set-current-plot "Trends-of-global-reputation"

; r: }2 e1 T# C- v. o8 q2 ~/ e4 |) D
; W& e' H+ p8 z$ y+ R& W2 Fset-plot-x-range 0 xmax

0 _4 B) N% a' h' w5 V# c+ s- r* m) U7 ]
set-plot-y-range 0.0 ymax
0 B# t$ \, X' R- h. t- s
end% ?! M! _& @5 U9 m$ g: O
- U  T% [& E( T9 A$ l$ F
to setup-plot36 U! g9 Y3 a/ @8 Y( H

1 r) e7 G8 W# Pset-current-plot "Trends-of-credibility"

! D, u, S; E5 E7 `- O# k( r1 l: Z' x4 V$ A" J! c; ~) w0 h
set-plot-x-range 0 xmax
- O' M+ J6 y% O3 |# f
. \; ]& w/ y9 y: ?( ]2 V: {- Z2 [1 `+ a
set-plot-y-range 0.0 ymax
# b9 s: G* C( v4 W4 B: ^
end
, R. F! D2 @9 t2 F0 @+ w
1 H& X1 [7 O' ~; w9 B. z8 G3 Xto do-plots
& g6 q( d8 a8 a1 g; kset-current-plot "Trends-of-Local-reputation"; D  S) P6 M+ H- \  q. h$ ~3 ]3 b
set-current-plot-pen "Honest service"3 J% J6 X% D) `
end
; K' l( p: Q+ B; M3 N9 L# v: K3 `' i6 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.
  B2 x3 |( _8 ~% V5 e( V! \- u  N! W8 B. K; o4 M
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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