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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:" p# `$ i8 _! a8 `: ]
to do-business 2 u. F  {2 _% i" P) P
rt random 360
4 i/ Z( |# ^& f& w7 B9 w* d fd 1% A  R, w$ X1 O% j6 |
ifelse(other turtles-here != nobody)[
+ [& Z( T5 ~1 ?  b   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.
, M  M( S# T- K  b$ f& y+ h   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
2 N! u/ m4 S3 A   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer5 a- {, c# K; ~: f2 Q( f
   set [trade-record-one-len] of self length [trade-record-one] of self7 J& w% e, E- k' H) ]8 \
   set trade-record-current( list (timer) (random money-upper-limit))8 r" f5 J8 S7 [. a, o6 N

+ b% T5 I& E! j, `! O7 m4 s问题的提示如下:
6 z7 ^0 c" a6 c6 I, U
. R' x+ r# p! U. J$ U# P, o1 i5 K" herror while turtle 50 running OF in procedure DO-BUSINESS$ d/ B: |$ [" G* O! y% W# Y
  called by procedure GO
& u* o( ?* o3 q6 ?* }8 ?+ M0 d% QOF expected input to be a turtle agentset or turtle but got NOBODY instead.
$ I" }" I5 F0 n& r2 F
(halted running of go). i1 e2 @, |( C3 U5 V' [

( ]/ R8 v0 B. p, q3 r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~~
' W  W1 [7 u% p# l$ h2 h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( h% b1 u' U2 a1 X, b
globals[2 e1 H. _& Z& z( z! [1 ^* I
xmax9 `5 p1 r/ n! b
ymax/ \6 V4 z+ p' Q( A
global-reputation-list
+ y+ L( e. u9 Z5 H0 U
1 i0 ?1 w6 J: \: a7 q;;
每一个turtle的全局声誉都存在此LIST
1 F& `& \$ \7 U# Z( G# [1 E9 Ccredibility-list
4 b0 t; y! d7 b8 A& I6 |  ]& p# B;;
每一个turtle的评价可信度5 [( N/ ^0 [3 i
honest-service
. f, X0 S' \  U* N- Q  g4 n6 C  kunhonest-service0 u4 R( n0 L) {2 {! O' N
oscillation
  v# b) g& P+ ^- A, S. \1 c5 a. Prand-dynamic
5 t' t; j5 F/ |  H' u& m# F]) L  f* C$ E6 C

# a' k3 x1 E) Y3 O. pturtles-own[, _; q& I7 E$ P/ ~: \
trade-record-all' K$ O! j' I' A7 w  [$ ?6 L( X7 J
;;a list of lists,
trade-record-one组成
; i$ o- Y, m2 E6 ytrade-record-one
& L# [/ o, A7 H  ]' x# A+ |;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录+ E5 }  Y5 K7 O1 Y0 E
& t+ K5 D+ h$ ]
;;[
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]]3 B, d* S! ~/ q( {+ E
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]% s2 i3 ^" R) Q& E/ p- d& @
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list3 K/ f. [, _( |" m# Y, G
neighbor-total" B, m! E2 t& F4 h9 b
;;
记录该turtle的邻居节点的数目: n3 a6 g: `1 O& R% c) N7 L) ]% ]: [4 a
trade-time9 Q0 S9 w+ {4 Q7 F+ f4 V
;;
当前发生交易的turtle的交易时间
$ X& q" _2 |2 g4 X2 q/ X1 uappraise-give
- h! u. p7 S$ Q- t) v8 A' T" W. s;;
当前发生交易时给出的评价
' Q1 r7 w: G( ]4 h' r6 e4 Mappraise-receive9 e2 ?- ]7 x+ _' b& c) r) e. p" n* K
;;
当前发生交易时收到的评价0 r6 r6 ^: I9 r6 M
appraise-time. h/ D% N4 ]* X1 H) ]+ d0 {
;;
当前发生交易时的评价时间1 \( w& r% a. |( t) R
local-reputation-now;;此次交易后相对于对方turtle的局部声誉, {/ j, p4 ]' u3 o
trade-times-total
! E' `  h0 J% ]8 k5 _2 Z;;
与当前turtle的交易总次数
% [  n5 D; y5 @2 }1 s, Y! Rtrade-money-total
% Z; r6 M# c# @* A, o) C2 e;;
与当前turtle的交易总金额8 `( k! R! G/ p4 [( |8 V. ?
local-reputation# c  ~9 y' _7 m8 p( X' H1 c# g" s
global-reputation
* F' O- E5 T+ C, _$ q# W" s4 x1 `+ p) ucredibility' U' ]+ e- m2 V$ G) ~/ Y
;;
评价可信度,每次交易后都需要更新* m  p6 I: `2 [( Y* K6 T
credibility-all; o3 f/ q; B( L+ h0 |
;;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
) N) q' c% `1 H8 ^0 g+ E* z1 U$ E4 n+ U& b  J
;;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' M- y' ]9 o% T' i0 X
credibility-one2 W& I2 R) L! 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people, x& r2 |% S- x6 p* F
global-proportion% z- w! _  h( ?- G5 U: R+ w. A% d
customer! W+ L7 ~' F" l7 K+ b
customer-no
6 R+ |# s) f8 a7 G. Wtrust-ok
* y  ^$ m  |) e& ~, Q; ktrade-record-one-len;;trade-record-one的长度
  r/ j2 y/ ]7 t# z]
4 n; ~. A: D. h7 D2 m" |& R! D0 z# P
;;setup procedure1 t# Q& M1 s7 S) l: r( ]  f
4 t! v+ x3 i) S" ]- j0 o  q
to setup
! |( Z4 F+ F; r% x; j+ \+ I) x! Z% m$ c7 ?1 m5 r9 Z0 c+ t$ y7 {
ca
3 W& M" q, e$ I: b" b

7 g: b) \1 I" c- K( q  S$ o& Ninitialize-settings

' z1 x: l3 @- U1 m0 W: ?# Q9 Q; ^) K6 b+ u* R3 I: e
crt people [setup-turtles]
& z: [8 P$ \8 P# P

# M  }4 Q+ T- Preset-timer
8 Y+ G9 Q! f3 X3 _1 u% e
4 g) f3 W$ R7 W, D
poll-class
* U3 g# Y- Y- Q; j
$ F! S% V! h$ _* C+ U
setup-plots
3 G4 ^; f; {/ ]3 H/ z. h& S
' l  A4 F% e" R- R/ O! T: _
do-plots

+ Y( c3 Q6 N/ R; Zend' l4 d7 f! t7 i6 k
" y0 ]  u: n* l- R  l
to initialize-settings
! B0 t9 J7 Z1 z  ~* [0 J2 i/ `' E: K
set global-reputation-list []

/ Z6 D) r" H1 j$ A  E
3 y: m$ R+ h; N- {% eset credibility-list n-values people [0.5]

) q  I4 }$ X; K9 {7 C# ~" G% p4 j
8 [3 e  W, ]: z+ kset honest-service 0
" t- K8 n; C7 y$ A5 |
$ P% T4 @( X6 p5 j! O) [" }0 [# Y2 |
set unhonest-service 0

( ?' v8 {& L0 |* R+ i( c
4 p/ |, C. S2 yset oscillation 0

1 I8 j2 k& G4 Z
0 y) Z" S) i( U$ B# `/ S) I, aset rand-dynamic 0
. d/ `4 I  b. ~$ Z8 [7 B4 z$ w' x
end
. d6 ~6 R* V' H; g: j/ @# c( ~6 \
to setup-turtles
" o0 F: {8 L, l, cset shape "person"
$ Q* H* X3 o, v& \% g' fsetxy random-xcor random-ycor
+ L) l7 V' z6 s4 s2 t4 L+ @! j, dset trade-record-one []$ U- R& c' g9 o

; s9 T: I6 o  `! R2 B* T+ {set trade-record-all n-values people [(list (? + 1) 0 0)] 6 |. }, u2 a/ r& |
2 f) P) q1 K# H! y' v! i
set trade-record-current []/ T7 ]0 `& z+ x
set credibility-receive []: {! B$ I& v8 A) n, a  ~, X* @
set local-reputation 0.5; E# n5 c' H# R0 L5 P# E
set neighbor-total 0
" M2 t5 `# Y% {4 h. A2 J/ qset trade-times-total 0
9 C# `, i1 ~0 A. g8 x9 Nset trade-money-total 0
' M# P( M* m* b+ S4 J" a7 gset customer nobody
: [5 U% r% E- d2 J/ uset credibility-all n-values people [creat-credibility]
0 u6 e; n" j4 ~. nset credibility n-values people [-1]
0 g) n2 C( Z* Nget-color
7 Z  ~3 n5 E# v

- w* {8 L& c" o0 |end  i' F% G, c( s; Y; S3 f  `

5 ]* R$ M( R; V# @( ^4 N: dto-report creat-credibility
: _: X; z. @* h4 A3 {! yreport n-values people [0.5]8 e: M  Q; G) {+ `0 b
end
. y1 t" V: G& _" F
% v" M/ ~7 K( v! j' tto setup-plots
+ j# A3 C" N2 h8 K9 ?9 D8 [3 c! V3 c; H" A, x5 o1 {
set xmax 30

8 G# m3 O/ \9 Y1 P; r+ @5 _: d: p2 S! b1 _+ K' v( A
set ymax 1.0

/ |+ S% P/ h- B3 I' ^' m: K* ~
: A& O- k0 M4 {6 ~. H! L$ ?clear-all-plots

$ m" Q; h: I  E/ D% ?% A3 V
* @5 U+ ^" W: {setup-plot1
& |; C" M. m7 z; a
! N; d: [" M7 a5 ?! `8 ?! Q6 A
setup-plot2

- R7 V) t% P3 W# q
5 `1 |. }' C! U# @( V# ~setup-plot3
" o! f# [  u& V: x& B
end: O+ |# i5 q1 C. k8 m

; _1 _! T5 W% Q! Z. i$ m6 T;;run time procedures! {  o2 k: E! ^0 P+ K/ x: ~- |- l
4 w2 w8 f  w0 Z" {2 f
to go
9 b8 e# \8 J" P- @( R" d3 ~
) r7 L- k4 J/ e- O& m' ?0 @ask turtles [do-business]
- n5 d5 w4 T- T, S& e# X# Z
end( l: r% S' A0 b* Q) l$ E
6 I% K$ ]* G: s$ ~
to do-business 0 G! X! Q! L. }+ P7 y( r

) G! V$ T7 e6 l+ ~3 T5 ?
" E3 O& ~- |6 j# R! h. Xrt random 360
- v/ v" C2 M+ c' q: [
; v) {" E/ _# l
fd 1
& J" v: [) W9 ~: |: z

: e( o- a! ~; ]4 n, y2 ~) Mifelse(other turtles-here != nobody)[

9 J. }* Y! C' w: e. X/ a7 h8 P1 v$ }9 Q
set customer one-of other turtles-here

$ T/ ^) T. _4 K: }0 I" s5 r! S" s$ J& o/ Y/ x# w8 z
;; set [customer] of customer myself

& l* E, J* m' z( ~, ?8 x4 g7 r- m6 [* d; k
set [trade-record-one] of self item (([who] of customer) - 1)" v8 N8 v' c0 h: G0 |, g, T
[trade-record-all]of self7 r+ Y, P! z5 S9 I" X/ I
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

* d# W/ a2 W" B# [9 f
8 |" A" B# E) R  @7 kset [trade-record-one] of customer item (([who] of self) - 1)  g7 e7 z, {; |3 K& M$ M
[trade-record-all]of customer
" n! O& R( {9 V. a
  q7 c$ K  j6 b* |4 s
set [trade-record-one-len] of self length [trade-record-one] of self
( u3 J" J2 d& Z
  N& o" d, M) l" y5 v
set trade-record-current( list (timer) (random money-upper-limit))
! A" s, e3 ?; S3 ]" s
/ h" j1 l& k( T7 q
ask self [do-trust]& a9 H  j3 P% h, g1 e4 F4 m, P9 b, b
;;
先求ij的信任度
( s1 L* T( p5 ~& z* C' ?1 k4 O% n
# E- |# n1 v+ r& n5 u; tif ([trust-ok] of self)/ W9 R4 G! \8 T- x/ Q2 D" A
;;
根据ij的信任度来决定是否与j进行交易[2 S: S/ n2 V! ~
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
5 k& L( J1 O& g9 e% K
: N( Y# Q0 B9 I, G7 X! ][

, r9 @/ s0 c" Z/ @$ Z
: n2 w; {5 E% ~# Y4 b% ado-trade
  s6 `9 n* t0 N! p; x7 _3 @
1 b  X, K! |& u, d
update-credibility-ijl

) H6 `; H6 q. C8 n5 W# q4 D: ^$ _7 u* J: M; ?  r7 N2 |
update-credibility-list& V+ S5 h7 Q/ \" e

% @( K& k7 g( _. i0 r" [, Z( s$ O+ L( q# l
update-global-reputation-list

& O- V$ ?$ p4 V2 p* a3 E
: |: G, E7 t- kpoll-class

0 {! ?9 u, m0 G/ v4 y& U% D  r
; d9 B# Z+ ~  x* ~5 _get-color
: w) e1 q, X* q
0 p* p2 x$ }) `
]]8 y3 ~& o0 H: F, j5 G
# Y) O/ b2 c- O) A, o" ?2 M
;;
如果所得的信任度满足条件,则进行交易
) o6 q+ D# ]( F) l  Y$ j4 X8 A* d, V
[

$ e# ]: o4 ]* q* G+ _1 u( \; v6 V7 |0 J' ]) |1 U6 u
rt random 360
+ n8 k* c0 c6 f5 `) `5 O$ `
/ `) m) Q, N8 a, @9 P; ?7 O7 o7 u
fd 1

$ H- p8 {6 Y/ I  v, H5 c- [* e
4 D7 P+ n3 N% {( h9 G/ D]

! Y  q7 ^7 D7 w, T# x, [! o# p/ k) t6 R4 i6 |
end

0 r. f2 O; M. p4 E$ p! l! H8 S% T$ _; X$ Q
to do-trust & ^, t: c  O& U4 y- S1 G! d
set trust-ok False
2 `+ }+ @! W) u1 e
7 ?) U0 s" b" u- Y( |9 _% h
8 L/ }, N, m/ H
let max-trade-times 0/ y0 v7 l& L) C2 X2 l2 _+ j' _
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
9 s5 M' E" k( |let max-trade-money 0
7 R( [: ^6 \' O4 Q9 G- Lforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]2 R1 S- }$ E% H7 x& s
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))0 H+ |+ ~) J; J: S

7 Q  j% l- ?/ K+ ~' m
$ o8 l' ]2 F; C" P' K
get-global-proportion, e: q! ]; Z: n" r" d8 T
let trust-value
: N  G& Q3 x$ x2 p8 f0 i# @local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

- \( d/ M& `! gif(trust-value > trade-trust-value)
. ?# P: }0 `5 N! B* n! N, r[set trust-ok true]
2 @( F# r1 ^2 q3 v5 @; Z2 ]end8 d: i2 v3 P. Z# y! ~0 N

- `. `6 g9 l6 s) Q) Dto get-global-proportion& @" [; S2 U! W; Y6 G: k6 R
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)5 [3 ^: [+ d6 [
[set global-proportion 0]2 {) U! t) X) h' @0 P
[let i 0- o# r$ L; U5 g5 r9 t+ a
let sum-money 0
$ e3 X' C/ s% m# Ewhile[ i < people]  k( }4 f; j) ?2 Z( l- K
[' z1 d5 b( j3 p3 y: ?) \6 r
if( length (item i
  |* n# v; X7 u6 W" _6 U[trade-record-all] of customer) > 3 )
' [; L; W7 k8 G1 f
[
# }# M  z& R% k1 `+ a' _set sum-money (sum-money + item 2(item i [trade-record-all] of myself))4 l8 Y2 s& W  o
]" W  F( \% z6 o! z) ]  ?9 ?# J
]
- ]8 V2 z  b7 e# Tlet j 0
1 m) A, c- o/ g" y6 plet note 0$ W0 p  y2 x" i3 [
while[ j < people]
8 ?# t! ^! `2 s, U" I9 A[
+ Y( L1 }  F6 i. Vif( length (item i% b- }* g5 i! A% J' _
[trade-record-all] of customer) > 3 )

) I) @6 r4 i$ L9 Y" M9 i5 w[" {; K, z$ l9 Q# y
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
& Q9 v( \& i5 p. o2 E( S[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]" j" h0 M; j9 h; d, R
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]6 z% u* _3 v2 G# X7 S
]
- A) g% B- E( O  I- E* e]
, N8 g3 o' ^' _& @set global-proportion note
/ i: r( Y, y; p]& `6 V, Z1 P$ t( Z4 W$ K3 z
end
0 H1 F+ U, [' X1 W9 K3 ^' ]4 q
to do-trade5 B2 ?3 W& |0 T& y
;;
这个过程实际上是给双方作出评价的过程1 }7 F5 O& J0 n& o
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价: U: _% I4 V+ }! ?% B0 ^4 J
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价; N" Z& d4 z' {, q+ s
set trade-record-current lput(timer) trade-record-current/ Q' ~: t* G+ A  M3 `
;;
评价时间  F$ D9 |* w$ o! L% W
ask myself [( ^9 Z* L! M7 t0 ]% C
update-local-reputation0 ^7 G: \0 A1 u
set trade-record-current lput([local-reputation] of myself) trade-record-current
  b$ N0 Y/ }* E2 o% z9 x( b]
9 d7 E# _3 B, ?4 r/ Rset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
: @0 V, q! T( B0 j. T! L; v& p& L;;
将此次交易的记录加入到trade-record-one
( Z9 M9 v- @7 Y2 F$ }3 zset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)' Z/ o& n& D' V, ~9 P- f
let note (item 2 trade-record-current ); h: [  l8 T, r& x# H$ d9 t( v0 S
set trade-record-current. _. K% E1 h) e" V! ~
(replace-item 2 trade-record-current (item 3 trade-record-current))
+ p9 L2 Z% V, K, _' M5 G; D
set trade-record-current8 R2 s# q! ~  C2 f: l# \# p( M. {
(replace-item 3 trade-record-current note), x5 C. K# p( |3 S

& L! z( W4 M. S; m- I' W3 o6 B4 F. S2 M

1 z0 M) t& B8 f; o' O/ Qask customer [- s/ L2 B! l$ {$ Y% a
update-local-reputation
4 S7 n. G% \: G% `6 L" pset trade-record-current
# o0 h( }) n" N# A7 M. C7 h(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

# k6 d0 A! a+ ~% y; s% G]
% }" v8 Y7 a0 x8 }$ x' {/ O4 g" f$ e" y. I/ |
/ O  g# b1 @* X4 C' x
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- j2 @: S! ?: Q% I( o# b) V

6 F" ^# X3 R% V, v- Pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
9 m: ?/ ]" ]7 f. e4 t. z$ z;;
将此次交易的记录加入到customertrade-record-all7 {9 [, G8 i! p! u& @- e
end
: Y' r4 R3 q1 t( H  e5 S; R8 b0 _8 b* X; y
to update-local-reputation8 L- w5 m/ m+ N, {4 x! G7 M
set [trade-record-one-len] of myself length [trade-record-one] of myself
: B, A5 C9 b, N- k5 K4 F/ L5 {0 z* a" w! ~1 A- z% |
: J+ P7 Z6 K. p  H0 z2 k$ z
;;if [trade-record-one-len] of myself > 3

! i0 ~2 l( a& e$ h: xupdate-neighbor-total
5 t6 r  r# A: l; o;;
更新邻居节点的数目,在此进行
7 `) D. T1 u4 j! J& klet i 31 j9 ^1 A# m$ H# x& l
let sum-time 0
- Y1 E' C# d$ P- \2 X, g8 Cwhile[i < [trade-record-one-len] of myself]
, w6 C7 F5 p0 F8 G  X* F[
6 J2 Q. B- g% }set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )2 e! M7 \, M0 |: c
set i
. v8 Y- L1 N- G/ a( h7 b9 v! ]# k( i + 1)
3 I$ p7 ~& l4 H! [9 O: \( O
]4 l# L/ R, Z# O3 O* a
let j 3- u* M" H! t( n; a- |
let sum-money 07 a9 J1 L- U, `7 b8 {
while[j < [trade-record-one-len] of myself]3 ?$ `( J" Y1 Y0 S3 o' h
[
  T5 \* @0 ?$ S% w% }$ zset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
/ ?+ B( m7 x8 A  F* K; qset j
) G+ R( T( ]' A7 r0 Q7 [1 c8 T( j + 1)
4 ]" n' K% Y# I# B  T5 g
]' g& {4 x* M" x: d0 e4 u4 S9 t
let k 3
8 ]4 K/ f4 L2 J$ Z$ e6 Glet power 0
$ K- _  E0 \# q4 J8 l! s9 H# Glet local 0
9 [& K( ~. n/ F1 a6 d1 S, }- \while [k <[trade-record-one-len] of myself]
% v4 y8 {, h7 e! E: Q[
$ L) [; N! W3 v- S/ F1 k, Fset 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 H" A8 P$ D, a1 {set k (k + 1)
$ U# ?1 O+ S% h( ]) o  i]/ o& \, O0 `* l& g
set [local-reputation] of myself (local)
" {1 k- z1 T) C6 _end
9 b; c+ f( r' B1 h- n5 u
( m) t/ ]& ?* A% h+ x8 L& `to update-neighbor-total( p2 `# w: o5 ?1 S, ~3 }
2 i( C$ z4 A% C8 N
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]9 n1 E/ v* u; a6 v. C$ o4 ~: _4 i

+ O$ \! a# U7 s

* |' e- ?6 C6 a% @end
7 c; `" c0 T1 M* ?2 V0 f' U) Y) T) }0 Q
to update-credibility-ijl
4 \# Q/ T' F+ v6 u9 p% z
8 }  @0 X$ a/ J8 o! g;;
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。
" l3 B) W2 U0 z: Blet l 03 U" @# t. v0 Y7 O' R
while[ l < people ]
& z) j% S8 K1 i' @, }9 {* D9 Z;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价0 k! M/ r0 R$ F, f+ O1 \! B
[4 i5 r0 b" k1 h. |1 u
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
) k& ]! q9 u. Xif (trade-record-one-j-l-len > 3)
  q" w# b, x2 T- y5 ^- L8 e6 R2 Q[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
. X; g% }% R& L9 l& m% Ilet i 3
4 d: {' w6 n: |7 X8 Xlet sum-time 0  G/ `  t# D: [. d8 P, o7 R/ T
while[i < trade-record-one-len]
9 |7 ]; {& g: ^! N) O1 s# O[: G/ X# R8 d2 p; d
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ): r" n4 T9 r1 I* d$ w4 e
set i
# M# v: O" L4 T! O% c3 b4 N, F; W( i + 1)
) C" `3 G" U( ?& ?' U8 ?1 s
]
2 m. v& {# U9 q+ G8 t( \let credibility-i-j-l 0
) K6 h/ [' o; c+ `/ Q1 @;;i
评价(jjl的评价)& B- B$ A5 {# J
let j 3/ |" z0 ]) I4 ]0 O
let k 47 d" I) L: j6 f
while[j < trade-record-one-len]
! |& T  f; z+ B[
# J# ~" y3 O! `! t2 awhile [((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
  ]; h1 G1 J; N  w  yset 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)7 J  T; W7 p& s. j4 J% f' Q; s
set j
) P8 }% ^, _& |: k( j + 1)

* {" T. l$ c0 n& }- w]
/ b# A  _. Z7 A1 s. v2 }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 ))- _  |% m3 F% }+ h: {1 L9 J1 Z& |. o
% a' X2 b! S' L2 x

7 t% r( _, E% J- Ulet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
( l0 I9 b' E  z4 q) w% L$ _;;
及时更新il的评价质量的评价
6 H* o1 s* \! a7 W8 n8 _set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]/ k% `  O5 D( @" D
set l (l + 1)
4 U. }& j. T2 J& @- d]+ p3 p5 ~5 N7 x$ I2 F  w
end
2 R9 P5 m1 J5 ^* R0 d8 r1 j1 T0 Q7 F% h  q$ G. _
to update-credibility-list( H% E1 k: v7 I$ v7 z
let i 0+ Q+ S% [! ?$ I3 V' `* _
while[i < people]( j; Q% l+ h3 ?! t; x
[
. Q: s# l- w7 h# M" nlet j 0; v; p5 ]& s( _' H' M
let note 0
0 a1 [7 ^# N+ Y3 g, ]let k 0
7 f7 j! h- N. Q$ [6 T1 e* n;;
计作出过评价的邻居节点的数目& G- I: s% I( \1 x; Z6 T
while[j < people]
) n( t8 [( N3 W8 G[
: C2 g: n5 X" J8 _- R" Aif (item j( [credibility] of turtle (i + 1)) != -1)
/ E+ ~) D$ S% J; e( U' X;;
判断是否给本turtle的评价质量做出过评价的节点
, C9 F; G7 R  C7 V+ B[set note (note + item j ([credibility]of turtle (i + 1)))* G% N3 e( M3 _' J6 q
;;*(exp (-(people - 2)))/(people - 2))]

1 h+ Q: w3 t) g; l2 Z, m1 iset k (k + 1)
' F9 [& C) ~: S) u% k, ]]7 x- a) b! f( \7 f! ]- [
set j (j + 1)
2 V  [8 m  P% W: ?]
2 X9 V2 O% L% x6 {( Sset note (note *(exp (- (1 / k)))/ k)
3 T/ D) x5 o. R1 Q4 Q9 l& [) vset credibility-list (replace-item i credibility-list note)4 K  J& b) i# A  M' N; h$ [
set i (i + 1)
* S4 V- G: d$ n# g9 i+ |$ p2 ^]
0 \" H' p2 X4 c" {end
( ?- P- P, f8 R3 k4 w& x% S6 M& {2 L; R7 l* h% f- i" i3 `
to update-global-reputation-list
& q  {3 l6 C  [let j 0; [  ^5 e: b( ^  l
while[j < people]
2 q$ ]' |% q- V: B[; X4 i$ p4 W& [2 f$ }2 }
let new 0
8 u( W0 [3 _* s$ g% V; {;;
暂存新的一个全局声誉3 U8 }4 x* _. x& A9 Q: f: u; p8 n8 {
let i 08 \; h8 |' K0 G( u5 D& Q
let sum-money 0# S' r" ^. ]) }$ k$ r) @$ M
let credibility-money 0
+ e# m3 j9 k  u( k# \- }: Ywhile [i < people]
" x- T0 }$ @) t; ~[( w6 l/ r# z2 t& g% r# ~: i1 C! p1 D  E
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
  }5 s/ F; l% h" |set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))! F) z, u% ~, U
set i (i + 1)
5 Y: }- r" r6 h& B' O- F' I]- R& H8 Y/ Y) Y1 c$ E# T' P7 S( _
let k 0) i+ d# b2 i' l3 R
let new1 0
, k- ~  V0 i, R# {$ fwhile [k < people]
- A+ ~" E+ _' \& _  D[
2 E) e1 N0 |0 w$ B: j* _7 ]& |6 `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). P" V$ b. c+ I4 N) p. [; u) u9 |
set k (k + 1)0 d7 U1 x5 W( k* U$ Q7 v7 t# D' H5 T
]
; e$ w; S0 P, F) Wset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 7 b. d' ?: M! w$ D3 j; t" H: a
set global-reputation-list (replace-item j global-reputation-list new)
  E$ ^, K, ^3 Gset j (j + 1)
% `* g5 L7 j) e6 G( V]+ D- a7 d3 a+ g  Q: `3 `/ R
end
" e9 Q0 s! W4 r3 h. z" Y4 [; c$ W$ q
; E, o! p" L1 Z4 R6 W% U! `
$ z% @+ r5 q; f/ Q) P0 V2 E2 M* [) P( Z# d: |
to get-color) b& Y8 a3 [0 S

9 N* J- R  B: g; ~set color blue
. @4 W8 x( Q0 I/ m) \' c
end
5 i$ ?5 h6 l) g6 E/ S$ j
+ G/ H5 I9 Y' Bto poll-class
( M% E# C; \. P. Uend
: Z; _- X: `5 @2 a# `, M' e. g7 Y9 r. E
to setup-plot1
( _' q( ], b3 C
' y) s( ~, g# h' Yset-current-plot "Trends-of-Local-reputation"

: L2 [4 A  j5 |3 b# s$ t3 L% ^' a( A9 [& T! w/ I
set-plot-x-range 0 xmax
5 B7 B- p0 N! g6 t( i4 d  X

! w7 q, D! _5 n: t$ Aset-plot-y-range 0.0 ymax

. w, u. \; t$ ^: x) W: fend0 f( X% [6 r# Y2 d) D
, C& I0 U+ X% s, W# F
to setup-plot2
6 F. Z; V& G+ t  x
0 x' L8 X! I$ a/ g. |; |set-current-plot "Trends-of-global-reputation"
' M/ i& F2 A+ w1 P) p, l. c
. G' ?8 G) I0 E
set-plot-x-range 0 xmax

3 @# n8 W- t7 d2 g
4 k% M( a6 N% Tset-plot-y-range 0.0 ymax
5 G. x, i  j" b9 o
end
; G! h' d" H) V! U. c; L* L' ^" G5 e
to setup-plot3. F  p3 n4 d3 ^0 x9 z; \- f

7 R" r" {' v% M. q- Sset-current-plot "Trends-of-credibility"

2 H! P; z9 s. {1 E9 P: }& r/ g! R" X0 n) q, ?& m, ^
set-plot-x-range 0 xmax

3 L- ~% x0 S" ~  j/ h. y
: P) g3 y* B- gset-plot-y-range 0.0 ymax

5 m( S  J: t/ Fend
3 `( A9 g9 E8 n) I/ |8 ]' p- ]5 @- }9 V2 Y
to do-plots
$ m# [/ l0 b7 @6 q2 jset-current-plot "Trends-of-Local-reputation"
4 ^. |- ~! ~+ S% Y, i% p" Dset-current-plot-pen "Honest service"( a6 Z' h& B, Q0 n' |8 k
end
( h3 g5 E- e7 u% V$ y) V
; q4 n' p% n  ~2 I( O$ \9 Y[ 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.
; w, L! l: |" F4 P3 g6 `9 J# H9 |; X, V& Q8 x5 ~* O9 i2 q& c% ~
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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