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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:( \% ]# C9 A  e* L+ W1 t4 M
to do-business & b2 n1 q) e7 }$ X: k9 [
rt random 360
& b8 Q/ P9 j2 X7 o fd 1
' E8 D6 h5 A3 T# m( s  f8 p% C& A* k ifelse(other turtles-here != nobody)[
. E2 \2 W0 g! f/ O   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.) ~- E+ n" U* Z7 N4 }3 W  z
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
' \8 {. X" S. O( S. F, `+ _. ]5 O   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
; V4 |/ P( n/ P) D, h  ]. `3 s2 x   set [trade-record-one-len] of self length [trade-record-one] of self
& \0 r! b% t7 Q) f8 M1 t   set trade-record-current( list (timer) (random money-upper-limit))
) R; k% k6 J2 H( g9 ^  T
" q# a: M8 P  A( B6 v5 o; G问题的提示如下:
5 A! X4 Z! A! y% ]' z0 D% q( p
5 Q$ K3 Q$ X5 Q# _6 \error while turtle 50 running OF in procedure DO-BUSINESS4 F% d9 T- L: U& q9 u3 r5 c4 L
  called by procedure GO0 d8 v' w" }. B( }. o2 L% p# y
OF expected input to be a turtle agentset or turtle but got NOBODY instead.. G) x3 I, C8 {5 m
(halted running of go)4 S5 `% H( r+ W- L9 R

8 N/ s4 y3 o, s! y. {  f( F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~~  K1 y4 g+ P7 n8 R( ?! p9 _8 w) D
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3 w3 V' f% ~2 f- C" H! e. V
globals[4 q8 W" S# E" b
xmax
1 g: h5 r( H  L4 S+ [/ u1 Symax
( r4 x/ ]( C3 O1 A( Sglobal-reputation-list$ O- _' H. `5 E8 q+ D

+ _* C% k& h7 M) K7 \' j  P. Z7 _;;
每一个turtle的全局声誉都存在此LIST7 I. _! M8 e" L
credibility-list
/ B, L" h, X- s- ?9 l% E# ~1 a;;
每一个turtle的评价可信度4 o4 ?6 x0 G+ F% ^8 U
honest-service5 M/ P3 Y; Y7 R" R! t
unhonest-service# Q# H* @2 `; e" W& z0 l
oscillation5 ?8 p! ], f, r9 m  |, ]4 e
rand-dynamic
1 A9 F1 o& A  g1 U& q8 c4 E. _]/ R% y  G) f! A: x  y; @

; U, l8 O- V6 R) v$ Nturtles-own[
4 \" k& U. P) Ftrade-record-all
& g3 R# {/ P0 u( n2 ];;a list of lists,
trade-record-one组成% [6 H& j' @! W) |. c  ]' U1 n/ t
trade-record-one
" j* B+ J- D) @' H$ D;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
' w8 U; D, H3 k$ f- x" r  y+ D5 d# O
;;[
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]]
( E% i0 o1 G9 A2 L# a# Ftrade-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]' l( Q7 X7 `, u
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- d' l) y! b/ B. Z6 o4 F, m8 _' u
neighbor-total8 |5 l- Z1 ~2 D5 W" i1 k, |+ j9 o# e
;;
记录该turtle的邻居节点的数目1 B# S2 Q) `, ]8 u# ~, K3 A
trade-time3 N& S% O" l0 o3 {( K( T, @7 d
;;
当前发生交易的turtle的交易时间0 }% K0 c8 \) G2 g# d' a- x( b
appraise-give! b+ \6 b$ K& x
;;
当前发生交易时给出的评价
+ U; X. _1 ~5 @. Oappraise-receive
+ t( ?# l' g! T% V6 B; ^;;
当前发生交易时收到的评价$ i8 H# v) S  M# {! x# |
appraise-time
# T9 U* z3 y- ~0 g) e0 `1 [3 W8 v0 g;;
当前发生交易时的评价时间1 @; U; X2 c+ R7 e
local-reputation-now;;此次交易后相对于对方turtle的局部声誉7 ?/ T, w& J2 x
trade-times-total
4 ]1 u& K/ x7 ~3 K% W7 P;;
与当前turtle的交易总次数, @- x, l7 e% O: |* J1 X) x. v  F
trade-money-total  u0 q7 p  s& M5 r
;;
与当前turtle的交易总金额7 T$ J" l. \( F; K# z- g
local-reputation& v- C& a. d$ Q; q8 }: A
global-reputation  i# f( C/ W2 p6 v/ v: R& p
credibility
7 q1 q- p5 I9 f4 O" F' n6 Q8 z/ y5 x;;
评价可信度,每次交易后都需要更新
  u. \6 T2 C* w6 [( xcredibility-all8 ~8 ~- r( l' i! Q( z2 W
;;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
! O/ V" ?& ^, x( o6 ?9 e% C( }* y5 \0 B0 C- a9 k
;;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
( Y$ l6 T8 u8 J! K: U# X# ecredibility-one
6 I3 f0 v/ d4 v+ L;;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
4 r& b4 d& k* g# H) R8 S& t. Vglobal-proportion6 p5 v: N8 j: a- t. t0 I" ^& r
customer
# Z7 W" v; {7 ~$ C3 R& Q4 k  t0 y2 e3 y/ @customer-no
' J: i: m/ L) c& X* ttrust-ok
% C, W' U$ p, @trade-record-one-len;;trade-record-one的长度5 S' I8 X2 v& U2 S! S) g' t
]
* s5 F4 q! R+ P1 [) p+ p; D
- W! W8 E" j  |+ Z;;setup procedure* ?+ N. [! y5 p$ ^9 n% `) k: }5 p2 P

5 n8 C# o- P, S2 `; Zto setup
9 ~' e& T' E7 C* B1 j4 ~: {8 Z5 |( L8 Z- f: q
ca

6 O& }3 R! D" ?8 z, {$ f
. p. C6 c0 h' T$ Rinitialize-settings

/ y; z7 ~0 ?" N" x+ U1 R
$ \# A9 n3 F! j" r) f0 I, Dcrt people [setup-turtles]

( r2 }8 r6 [) q7 ~" i% g; D5 r  M* I8 B# z2 H
reset-timer
" Z- n: ?* u5 J+ s
% `, B- e. H( H# N6 a/ J' x0 Z- k  A
poll-class
" r2 g' F5 r) G% E8 ~3 C* B
3 l+ D/ e- x: `" U6 \& s
setup-plots
6 t- v- a: b7 K

9 z, S5 h8 p: M  ado-plots

; l) ~. O3 o, R4 ^! N3 L1 o, yend* w2 R% r6 o, N; e, Y, `! {' Z  ^4 h
4 Q- I) r  J7 k0 r$ ?( G
to initialize-settings
& q5 X" n$ h  s& k
* b) @0 n- s  U3 E$ \! Nset global-reputation-list []

' @5 z0 ^) p/ R
" s( _' ?* g; _0 _+ Z" ^! `set credibility-list n-values people [0.5]
- T6 H- h$ T0 c/ t
9 Z! y! M; `2 Z4 I/ X
set honest-service 0

* k# C4 G0 ?  |4 j. }4 H( H
- l1 x% f0 P0 X: P4 Dset unhonest-service 0

( }  C4 I4 Y$ E2 _2 Y( i
: t* O5 s; w* D" z9 a5 ^+ E1 h' Gset oscillation 0

. R; ?/ f7 L% J" G; h5 |% O* V& G, {% Z+ D) D. e% ?# ]
set rand-dynamic 0
! ?" e$ `6 Y0 t' e; w, u, `0 O
end
* Q  S( ~" ~7 g: k% k) E0 R' p1 T( l0 W& F9 o. R
to setup-turtles
) i1 X" c6 p8 A2 qset shape "person"
3 l6 P- `, G* _3 ~' w( V- Osetxy random-xcor random-ycor, `+ ^; d! ?( ?
set trade-record-one []% Z" E7 j- W$ B' ^* R8 w/ J
, D4 N: D& O% N7 q
set trade-record-all n-values people [(list (? + 1) 0 0)]
9 x. ]% F0 B' N6 q" W
8 f  s* o  m& z
set trade-record-current []) u/ |: @* G3 j( C6 c
set credibility-receive []$ t( \7 S" B; ]+ y. I8 R
set local-reputation 0.5
9 B8 q. @; b; u& }; V* J) X' Uset neighbor-total 0/ q; |+ G6 G4 ~
set trade-times-total 0
0 L, g- O, d2 W. Pset trade-money-total 0+ M" p8 z& E. i# H
set customer nobody- n  y+ X) I0 G1 c# L+ o7 W  D: l- T
set credibility-all n-values people [creat-credibility]
$ }: F9 |7 u# }set credibility n-values people [-1]
/ h# m# Q/ w, K7 \. oget-color
! S- P9 m% V5 i
6 F7 p2 A& S8 I% u1 J3 b
end8 F1 k8 |: {9 W- s0 T. u

4 ?, m! M2 }! C. `9 ]& T  y# G" eto-report creat-credibility  P6 _8 p2 k; Z. Y" Q, U
report n-values people [0.5]% a0 p& x- Q) h2 ?
end
4 L( u2 z3 c+ a5 c$ I
. ~% h- g; l" dto setup-plots
5 L& [  k4 f( Q+ p4 U& g* l- v0 r
set xmax 30

. b( @3 P% M/ g: Y! ]: K) A% n/ I# M! B% v) \% w8 S( w) T- ?3 `5 u
set ymax 1.0

5 P3 h, g9 o6 ~; i+ k# A0 u  ?5 Q+ }7 b; y! [# q
clear-all-plots

5 i9 L3 ^8 R$ \( o5 J" j0 d6 e  l+ C7 m) ]- c4 ^' y3 {# \- U
setup-plot1

" H) Y- X( j" x
! A0 j2 d' o$ `) h; B( W) {setup-plot2

; Y* j$ A1 w& W1 M6 G' B
) K0 Z& C- Y  G" Z( Dsetup-plot3

1 I# K8 ^# P: p$ Oend
" H7 U1 ]* b3 w1 @) k0 o& n' d& {7 w
;;run time procedures
! _8 F* O& h5 q) a+ E; B, G
7 z0 |  I/ a6 z& a$ w, tto go
- q7 l; f) H+ U. Y& ]: i1 A: @" {5 i) p- D2 J) ^% z+ n: w4 j
ask turtles [do-business]
' O# ^5 Z- ]7 W* p
end+ i3 @: @8 B2 r3 ~

9 f( S7 h( L2 y* U0 w: _to do-business
1 W) q+ ?' t9 z" n: @

  y% ~  T# h, |# N: v# `
8 R' ]9 a( f  l1 y& H6 B0 }# Mrt random 360
0 S( W- F1 Y' i; l% M  E" a

4 |; h! d$ }3 }; n; S+ o$ bfd 1

, e6 ?5 `& d& `1 }9 P4 L) a
  Q* i" L8 I7 A3 Y! L% pifelse(other turtles-here != nobody)[

7 T& e9 F. s9 f
1 b6 E6 H. \! @7 ^0 h9 ?set customer one-of other turtles-here

: \3 n* _1 w$ k) w# q+ p4 f3 C" v$ Z$ q2 U( S
;; set [customer] of customer myself
2 u2 y( k- v, g. Z+ H

5 j" E$ ]3 r! M4 [set [trade-record-one] of self item (([who] of customer) - 1)  F0 u( X5 r& j3 G' Z( P
[trade-record-all]of self
# n! N" T( W" x3 R" F, L" Z;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
' v9 f4 E0 Q! F7 C5 u9 l

- p7 \8 E, }7 \- _# x0 P$ @) V$ Mset [trade-record-one] of customer item (([who] of self) - 1)$ M5 Q  L6 @& A
[trade-record-all]of customer

1 h( }! X  X/ l1 L4 ~' O! ]- Z5 w. n0 \; x4 @
set [trade-record-one-len] of self length [trade-record-one] of self

- t; d' w4 L+ @# O. ^
2 a7 l! q5 y8 \+ S! fset trade-record-current( list (timer) (random money-upper-limit))

( x5 K7 g* |% t: W. B7 D. |( \0 @7 k0 _4 D6 q/ r; V
ask self [do-trust]2 ~% i' \' `. q  @9 h; p& v
;;
先求ij的信任度& w4 q/ n! f  d% D& A5 j. N

* W; K0 Q( h9 {- _; E- Nif ([trust-ok] of self)4 O/ ?& x+ W4 Y2 Z) t5 z; U
;;
根据ij的信任度来决定是否与j进行交易[" I* E7 ?4 m- [& V8 b" b/ h( m& i; [
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
$ |# Z% {4 W, k, ?1 k5 M: q9 A+ p6 ]- C
[
/ m  T8 ~2 j; ]: h+ G: \9 X- a
9 y8 U# {* \: ?1 F% a9 A4 |; X; y
do-trade
: e* ?0 N4 D2 `# Q5 |4 A. y2 E$ g9 s3 W
7 p! l% U  _' E7 j4 z; {
update-credibility-ijl
( h/ q/ p; Y" B& a" Z8 a

9 V3 d( [& Y. Y' Nupdate-credibility-list
& o" ~1 ~+ @1 ?: V  f$ Q
) Q0 y- x: W- c/ _4 E2 f
! j, I- }- N3 `3 ~" @
update-global-reputation-list

" h( @& I6 Y3 R+ G) d
- n" E' q4 S/ Apoll-class
. U  W. L6 w5 c% v
5 p7 K# F( q  g, V1 k1 B; o3 y3 _
get-color
" b2 x/ C8 h. A/ x( e$ J/ [. C

5 x$ F# y. C- E" h]]+ X: P+ |( H2 T

* \# a8 s6 h, H( ~6 s;;
如果所得的信任度满足条件,则进行交易+ {) }& F+ W9 U; \% l6 y
# f3 p) R  m5 T/ C) i- s1 k
[
9 c4 D2 F2 I3 q
* z6 |: \0 ?) ]3 H4 z) B! T
rt random 360
2 _+ I8 c" s* J* M$ O! ?4 Z

* G# Z% }' F$ Rfd 1
, R& ~" n  h9 l4 a9 K7 Y
" g( k: Y# E- Q0 ]
]
5 }1 H6 n* ~/ r9 _

) O" `' i9 {) h: ?9 p1 T: L  Rend
% L9 `8 _5 W3 D, a9 s, j
$ K# I+ Y. _9 @1 J! I6 }
to do-trust , Z; n8 L3 g% E8 `  A7 b. l, P5 }
set trust-ok False
3 \9 }5 H& k. e1 p0 o+ o. i' \# Y: ~  q& l2 y2 K

8 Q/ O  s( r, c3 o+ Llet max-trade-times 0
- l. J# o/ A. d$ ^foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]], E- J1 X: W) [6 u$ k* e9 J9 v
let max-trade-money 0
5 |: J. _* U( a# Yforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]+ o% f5 M% g4 D( b0 k0 f
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
8 W5 _9 U$ X+ i" a4 X. g; z' {7 I: B+ j7 P6 E" {& m6 K
; q  I0 q, u: S6 `/ h: t; f. W/ `
get-global-proportion
$ W) K  w: A" s( J/ i" ?let trust-value
% ]% c& B; C8 glocal-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% L$ O1 Y/ s
if(trust-value > trade-trust-value)
+ T% N. F) w5 R[set trust-ok true]
5 |6 L7 u9 z# `6 [: S* ^# Iend
3 z6 m5 I7 z0 L
4 w. M3 U0 }, o. T: l4 W* W# zto get-global-proportion4 p" z; }7 i' X* A" n' j
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)5 i& u  G+ j6 {( ^' {
[set global-proportion 0]2 Z; M( f8 f6 ~9 i8 e) E
[let i 0
: z0 A1 t9 W. f9 ]3 U5 slet sum-money 0+ n( ~3 O' N( \- `
while[ i < people]/ }: H. M/ b% ~5 z! `& l
[  b5 c7 E! K, R6 ^. S* @
if( length (item i
8 g' g  u& ?4 ?5 H& w[trade-record-all] of customer) > 3 )
2 @/ |' C1 `! e4 K
[4 u1 o5 I+ V7 ?  M* G7 c3 Y
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)), m2 ]/ l& G8 W; @
]% C" Z. i- ^! @, @" h8 M
]
. F. j. m+ g( O7 d: g9 Klet j 0
5 Y9 b: |  R" O* nlet note 0
( x- C* f: \2 t) N: hwhile[ j < people]
* T6 C9 ]$ B+ X' T[; E/ A! J+ b6 e
if( length (item i+ e# R. d9 |4 [4 [9 a
[trade-record-all] of customer) > 3 )
/ o/ o1 Z, ?4 A8 g. h
[
* Z5 w7 p/ E1 b" _8 @6 Oifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)# r6 w1 E) C! z; `; Z3 O
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
& ]+ |2 U$ N% H" a: e0 N2 h2 ?% E[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]7 e/ f# g/ p% T' d+ D
]& E3 S' V' w  R! M( u
]
; I6 O5 q/ {, [set global-proportion note! t9 B" d# r9 k3 d) [
]7 a* p8 {9 {  t; f5 X3 U, M
end; `$ a. Z! K- l; _7 W% l* S

0 a9 \# \8 y8 e0 c2 g+ d) U3 V& L, n7 Xto do-trade8 ~$ _1 u) h* W2 O2 O
;;
这个过程实际上是给双方作出评价的过程7 U6 A% f& {/ s
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
! u. Q9 u( P& w0 ?: o: aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
1 N; e6 x% T' Aset trade-record-current lput(timer) trade-record-current6 i5 K! Q# a8 |- r0 J( \
;;
评价时间
1 S; @3 W' |1 s$ h1 U$ kask myself [
% y( L4 `+ H* }# `1 q4 Uupdate-local-reputation
5 u; C& |# {/ a8 c( Z7 Q) ^set trade-record-current lput([local-reputation] of myself) trade-record-current
% X( M5 b/ o( N: b# u]
6 s; b! V4 l! c0 b8 |* S% N  oset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
4 c1 M, @! c, B3 `' s;;
将此次交易的记录加入到trade-record-one' t! v& \3 {( J  b) g0 I; O
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
- T4 e! C0 e8 y0 C% @/ blet note (item 2 trade-record-current )4 |9 {: R8 R$ K6 E  L8 Z
set trade-record-current5 H% N0 o! [) R# ]2 T
(replace-item 2 trade-record-current (item 3 trade-record-current))
5 H) f8 H& p/ F% b  R2 \
set trade-record-current& f' R8 I, u' w! Z, l
(replace-item 3 trade-record-current note)
7 D4 J3 r; e+ C7 M+ j3 i# q5 j+ F' G2 a% u, {8 {" W9 c

: X  y, f# Z: l0 Yask customer [
2 ^. U/ _  H5 K9 i; R$ Hupdate-local-reputation" D% E& q! W( D7 x$ Z2 a
set trade-record-current
, |3 j7 t/ e  D8 b6 [(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
5 r- C2 ]7 {% m+ w: C* ^
]0 t( O1 Z; y1 C5 |$ t  P8 Y
; u. P' o6 j7 N- C

' i3 y/ m% [4 ?0 g7 i' Rset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
9 y, w! n1 C8 a3 b. o
8 p7 a- K2 U' [- I
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))2 ]: a7 o0 @8 ?, k7 F
;;
将此次交易的记录加入到customertrade-record-all
2 J, S4 ]$ h1 O& d0 mend
$ O5 w% A% l1 O! q6 D+ k- p( T$ h
3 z* q: j8 N; N$ Y* h' Tto update-local-reputation
& T( }$ \  _5 D; Gset [trade-record-one-len] of myself length [trade-record-one] of myself$ u5 E( N) x" u8 S* C9 b( \+ z2 D

' G/ A- U. u9 O% p3 r) {) d$ ]& u! T5 M, b7 q! p* e! K
;;if [trade-record-one-len] of myself > 3
) k" }: m$ v/ P0 q
update-neighbor-total
! A6 V: k# L" h  {8 R4 G$ u;;
更新邻居节点的数目,在此进行
# s, l2 d  l$ Dlet i 39 v3 e. \- m$ p* ^) I: B
let sum-time 0. I( q# m0 D( l8 d: N9 I
while[i < [trade-record-one-len] of myself]
6 {9 i6 B: b! s* [" G7 \) G[: S0 F% v' {8 {. Y$ }" K- V; o$ ]
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
# R5 H* f$ D+ m: X  p+ j" G, Uset i( z6 \( l2 r- N: l. P3 v; E
( i + 1)

! a" l: G5 b7 R]
+ |' c1 Q. b# V7 U: Hlet j 3& M. p/ c  n6 j
let sum-money 04 z3 _2 e( q) A2 j, _- u
while[j < [trade-record-one-len] of myself]. M6 p4 [# {  {; l  X) L( D
[3 O6 z) Y$ o; g2 A2 [
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); u$ ~5 a& c) b* T
set j
& w& a+ \8 x! d: u' G( j + 1)
% j+ V, V* f1 t+ E5 O; M4 {8 e
]3 F, `; K5 j: ~( P- f6 s
let k 3& h0 H* l5 o6 f( ]# G
let power 05 p0 z! @- x% h0 d/ x) K, ]
let local 0
& ^. k6 R( E7 X! R: \; Dwhile [k <[trade-record-one-len] of myself]: ~$ N- ?8 C) R0 U+ L$ t6 j
[+ g% d9 H% M) 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)
0 D7 B; {. v% }% g; D2 ~5 Eset k (k + 1)
+ c; o0 b9 R. d/ @0 K$ e* X]2 R' C- F6 |6 h* T) _! n
set [local-reputation] of myself (local)0 t, U+ L' p; c& @# Z/ M
end
# c4 c. H; C2 K/ o( q, C* w1 i
. O" m7 n5 n0 A4 b0 V0 _  i' Dto update-neighbor-total
1 ]1 {" s( L# v. L. d1 O) m* g- m7 L/ V# i' ^" X& H& @$ q. W
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
# [( c! Q7 A- y# z" i% ?
- r, G8 ]! P9 q

9 A; {$ W# |6 G1 `0 Jend
0 o% X9 [% y& d9 j$ n( X( s" }9 A0 l* O3 C2 i* M. m) m) ]
to update-credibility-ijl 4 F% E: i5 M/ d! O

' P7 q1 W" `: s1 ]# _  t;;
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。
1 G6 E9 p( _8 u! l! I$ \6 U8 ^) ^8 ^, Slet l 0
/ I) X$ c2 M4 ^4 ^" _while[ l < people ]
  G% W" ]) O6 P9 }  \* p6 V;;
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
- T* X  v7 b$ O0 n7 N2 S" G& W9 h[
9 O/ E0 w& W2 wlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)4 x; K# M  w8 C' i, k9 _
if (trade-record-one-j-l-len > 3)$ W5 n, F$ ]( s7 ~* k
[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-one3 ]4 L! }3 n9 q3 R8 G! O2 @* \6 c
let i 3
8 s! U# C; i8 F+ z1 K* glet sum-time 0
! h7 F) k+ P' {! Y6 u9 pwhile[i < trade-record-one-len]& `0 x1 F; y- F
[
* ~5 p1 e' @* m# t% Pset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
9 a. f; ^1 y0 D1 h' c* uset i
' l6 \6 c6 }' F+ O7 I( i + 1)
5 g1 i; y# o7 w6 I
]
4 j9 A% I5 ]3 ]7 o6 elet credibility-i-j-l 0
5 U8 s$ Y/ k) ?;;i
评价(jjl的评价)% B% z" b( i3 j; A/ [
let j 3
% X; t1 o, D1 I4 u7 O$ wlet k 4
8 z4 @! ^* J6 e1 d1 e  y! awhile[j < trade-record-one-len]% S" g1 ^/ R5 X, u' P) q
[
( x& S. ^7 V3 B3 }/ s* v+ e0 P$ Xwhile [((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  h$ n0 M5 {- l* g& _# S) _8 V
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)
/ b8 X9 P6 F3 V! h7 pset j
4 D- {5 _+ J2 f1 ^( j + 1)
4 W/ r. k; ^1 y& i4 ~
]
" ]. Q2 S( \) f8 z$ pset [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 ))7 l8 x! }3 ?" k- r5 G8 g

% F/ K% c* V" o: b

2 y) W. o3 t; p! K: v' rlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
' Z) V: X1 \" c, B* U;;
及时更新il的评价质量的评价
" `7 W7 y  o9 ?2 ]' X5 cset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
7 D6 H9 ?+ t' P  x  m9 aset l (l + 1)! O0 R. F/ r5 S6 F
]# _5 X% Z! O6 w
end
; L9 n3 M4 l4 R7 D, d
. Y) ^% Q! `8 g6 lto update-credibility-list
5 H# b  k/ ?; h4 blet i 0
+ ^* \0 y$ J: `while[i < people]
& N8 O* j* {  G[# E3 e& ^- h( n  t- m: }
let j 0
# I1 v( j# l/ Y( F  A2 V& hlet note 0
, d6 a3 r- [. L$ v) mlet k 0/ R( I* h6 |& E% _7 l
;;
计作出过评价的邻居节点的数目
6 `+ r- ]" V: _7 k& |4 n$ S" [while[j < people]- s8 g; I/ E, f8 Y5 p$ W+ V- `1 s0 n
[
0 l9 |- j9 O( |' P" u; d  A: Zif (item j( [credibility] of turtle (i + 1)) != -1)
6 J4 D3 q/ T' |;;
判断是否给本turtle的评价质量做出过评价的节点
+ n! S8 J8 j  z[set note (note + item j ([credibility]of turtle (i + 1)))) K2 ~7 t/ ]) t1 _5 j1 D$ e
;;*(exp (-(people - 2)))/(people - 2))]
! E4 L$ ~: T& q$ q, m
set k (k + 1)3 M1 z1 }7 {) @4 Y
]; i, W& \6 @, g/ K  j; ^! E2 ^
set j (j + 1): e: E; p% d# o
]2 u( a) a1 {0 N' z1 B: R2 @: d- ]
set note (note *(exp (- (1 / k)))/ k)
- ~; D/ ?' L2 V' p" D5 X9 ]. `  Sset credibility-list (replace-item i credibility-list note)  I9 T7 e$ l5 t& c7 r
set i (i + 1)
5 L. h" P. ?% A1 k0 L]7 y  r" @4 U. J& h
end5 o8 B% A( d* A2 B7 U. i
3 @5 z* ~) r4 y$ [; W; `& J! m6 P6 n
to update-global-reputation-list
! t% w" Y7 b; T6 k3 k! _% i5 Ilet j 0
; O1 l; n( Z3 T# g( y" twhile[j < people]
& l7 Z4 A8 q$ t[+ J" D0 J" L4 z
let new 0
- g9 Z# f* m( l;;
暂存新的一个全局声誉
% \- _0 M7 O% J" |let i 0
! ^6 {" K+ T# Y  m0 klet sum-money 0& u; d: T+ z' `: `6 r& J2 F: ?
let credibility-money 0' f) S" U. ~6 w; o% T, _! O
while [i < people]: P+ b  h; ?% x$ h  Q( m& f
[( |! Q2 s" N; R7 l
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
! u) p" a+ Y/ O9 A! ^1 K! fset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
$ z1 N' r6 s, C6 `set i (i + 1); `8 Q0 A( K% Q; {
]/ ~% u8 o4 m& ]7 S$ u# a0 t
let k 0
/ H* Y& R/ {4 @2 ^let new1 0
! J1 `8 A( g3 Y/ A7 v6 G1 t" Wwhile [k < people]* h' t6 t: i8 f, r2 \/ {
[
5 ]9 u2 ?. t# A5 c4 lset 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)
: D7 l. [& Z! a  s" Mset k (k + 1)! n- |0 D% b- I, X, k  W
]* s* U4 L( q4 M) {' V
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
% \0 n8 e# [- y5 vset global-reputation-list (replace-item j global-reputation-list new)
: ^0 B) W7 [7 P) N, gset j (j + 1)
: f0 ?/ ?+ ^" E]: m7 e" u. X  H- J5 B9 I% j. C
end5 p# k) p# D3 {) S! ^3 h% H, \

6 K5 ?3 W4 Q- ?1 G
# c* p$ \' X; `- f- j* K& e/ a3 @0 b( @  I  h- C' P: B
to get-color5 u/ [) y0 b6 t: Y. G

$ i$ q1 `7 @1 V4 Z  `3 `) qset color blue

3 m  a, C$ i: k2 Dend  i0 O) T' F# _* j" S5 h! b
. v# Z8 |; c7 D$ M5 W
to poll-class
5 |" }/ m& H* a9 c/ Z6 vend
- q0 w) Y+ l; w8 W0 Q5 M, T
) C$ o. K! x4 c7 Ato setup-plot1
& P$ B. l8 X: }0 \& p
9 D  E& S2 ], b+ M$ A  Xset-current-plot "Trends-of-Local-reputation"
. O5 A) s! I% N2 h: |) W

$ W- W8 ~/ }0 W9 y5 n0 }! c) q2 Oset-plot-x-range 0 xmax

1 Q: t% P; H1 y+ r2 g& Q# z& R( `
+ y4 u  p! J! s$ P$ s! Pset-plot-y-range 0.0 ymax

5 Y- q, a. }; {( i# eend: k7 ~: c% w' ^: d$ K
+ {! b6 n+ p8 n% [: J* m* O, R4 ~) Q
to setup-plot2* k+ g+ G1 ~) v$ A9 p

5 ?- ^+ L' b1 P) o- oset-current-plot "Trends-of-global-reputation"
) m) y" X% @2 i/ i% v

* L& {9 ]  O! o/ cset-plot-x-range 0 xmax

+ I$ n! ^2 c% u, I& h( U/ M4 Q) m9 d3 x( V& f9 W( F' [* e
set-plot-y-range 0.0 ymax

) a8 Z  Z- i( |: y9 d  xend
$ p. T& E( G1 B. D
1 n: `5 G! u3 @# Z  @to setup-plot3
9 h6 t0 l$ J. A& L, w. ~- @
! Y3 m% x4 Y9 D7 o' `3 Lset-current-plot "Trends-of-credibility"
# t& V6 g3 O! t4 u# p

+ s( x; {3 H; vset-plot-x-range 0 xmax
/ R9 X- w, N3 ?$ g/ Q- ^( ]

# e4 T6 [! Y& z  j0 {4 Z3 i- mset-plot-y-range 0.0 ymax

5 G( T1 H+ V2 r# J5 n9 n# Wend9 }0 u8 I5 C8 T/ @

- G* N# M! b, ]$ nto do-plots
4 N$ F8 u% Y5 h# T$ ^set-current-plot "Trends-of-Local-reputation"
& m5 I+ K+ M5 Z8 X- ]3 G/ A8 \set-current-plot-pen "Honest service"
: I; q' |" V- f8 y' Z, C* }1 m& I8 Vend" g% s, J& ?! \9 T6 {' M

' f1 a& `( n; E+ @( z[ 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.! p% `* h, c4 c' t2 }; J0 E4 _
0 _# ]% B% [) N' I
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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