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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:; T" H/ |1 p2 m& _! w' o1 h4 B, J
to do-business
! @+ m' Q1 g% G4 j' H/ K rt random 360* j, _# }8 {& y& Y) d( o% E' v3 E
fd 1
# H* }9 ^! p9 E+ [8 ?# f; o) z ifelse(other turtles-here != nobody)[: ^9 Y. d) h% s3 v: 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.. f' ]2 O! N, n0 Q
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
5 L$ V; L; o+ L; ^/ y5 s0 W   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
% r7 X& M( y6 u3 G   set [trade-record-one-len] of self length [trade-record-one] of self
6 _! A$ a: q+ i" |6 ~9 M# p8 Q! Y   set trade-record-current( list (timer) (random money-upper-limit))
& a6 R; t* N9 ?+ n9 r' n+ n+ ]' D2 \' W/ z
问题的提示如下:
" S6 k3 H( {' K" r3 y# j
; R8 |+ w' ?/ {8 gerror while turtle 50 running OF in procedure DO-BUSINESS8 ~8 d7 Y  u! X& X( a: z
  called by procedure GO
5 z/ [  N6 {7 K% }5 ]OF expected input to be a turtle agentset or turtle but got NOBODY instead.
  c& V% F' ]( }
(halted running of go)
) P) A' ~( i2 t+ ^# z& \6 F3 \! l' F( H# n3 e
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~~+ F7 J. b8 F, E$ X  I! p, w
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* Z" r2 q/ I! K3 T4 [- E$ m% A
globals[* ]# b; C: F4 z0 {3 l' s( q
xmax- a6 w) ?4 C; r, Y; J, O: S
ymax
: o# P4 ^8 a! K; ~1 pglobal-reputation-list8 }6 i- `2 g. Q8 e7 N$ J
8 |" Q7 x) W$ X- c3 t
;;
每一个turtle的全局声誉都存在此LIST0 _$ i7 b* M4 O
credibility-list1 x4 W3 Y' m; ~4 U1 `) T/ {/ m: L
;;
每一个turtle的评价可信度: H3 y1 _  U" _7 S7 i
honest-service
  I1 |' V! W! P0 Lunhonest-service
2 z+ `; s2 x; c! C; Eoscillation
9 o1 s, s' r; Y" L7 x$ Yrand-dynamic) `. t6 r! S2 b$ G7 A
]+ i& P! S& R( K4 w& T- L6 M

9 F; k2 L+ O) F( Rturtles-own[
9 r! i; {1 ]$ z0 v4 q% Gtrade-record-all/ B/ ]" L( O- l$ ~( P9 }
;;a list of lists,
trade-record-one组成1 F& j+ m' k6 E# b6 R% b8 q
trade-record-one! l4 E" p9 k( a2 h" p& K
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录6 r; L5 g: D6 a! Q/ I$ W9 p
) R/ A# L5 M8 i) z- F# f6 Y' y( Q
;;[
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]]
  w6 i* o/ v; |  `) 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]
& U$ y4 F4 L, g: d5 [0 i! dcredibility-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
9 H, H* |( E4 b8 r7 ]( N: eneighbor-total3 v# {4 c; r  k3 L
;;
记录该turtle的邻居节点的数目6 T0 k) ]0 k: c) Y/ y2 j6 I/ V" |5 }
trade-time$ o" G* b% |# }4 w' [
;;
当前发生交易的turtle的交易时间. ]- P2 w& V+ O. V4 [7 x8 ]
appraise-give
/ j3 z2 Y3 _" h# k8 V. O! F# d% K;;
当前发生交易时给出的评价5 m8 p5 R! r/ F1 b4 l7 W9 K
appraise-receive* B% _9 z3 l" Z" |
;;
当前发生交易时收到的评价
  C. H0 \+ Z) cappraise-time0 K! G$ M. r5 w& f; [
;;
当前发生交易时的评价时间
7 g# X8 X7 y- r' P4 n" qlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
/ `# \7 B8 f& j8 W- `trade-times-total
$ p4 E0 @) I. r! H( t;;
与当前turtle的交易总次数) ]" m' r' G6 C  y; z" g; G, P( \
trade-money-total. z" \% ?. D2 F* J  P
;;
与当前turtle的交易总金额
6 E+ d1 z$ P1 @. E  Ylocal-reputation3 N, L2 q+ h! r# o% {$ e- `. h
global-reputation4 W5 p- I; I5 H8 X" B/ u/ _. i
credibility
3 K4 @& I9 y) [1 e' Z/ |, a+ i;;
评价可信度,每次交易后都需要更新
2 s# U4 ?1 K! N1 b4 [6 ecredibility-all! }' f& p' n: P$ i& T- Y- {. L- e
;;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/ o' g* t4 O' Y$ K! a
* `" ~) z  I! v1 S) s2 o;;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. ]; r+ d9 m4 D2 Q3 L+ H$ @& r
credibility-one& t' Y* M3 T7 [/ ]8 w9 k2 K
;;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
7 {7 M: z2 q  wglobal-proportion- Z( O6 E7 i' o# `5 u5 l
customer6 I$ r3 C  N( {+ s, ^
customer-no" w, j& V. M, E" z# u8 u; I
trust-ok2 u2 D& u9 J0 Z# d( Z6 U
trade-record-one-len;;trade-record-one的长度$ ?" j) k. j2 O" ?% E# M
]
2 @4 n4 ~5 P& }) f' E$ r: a3 S9 P, A1 O+ ~" O
;;setup procedure3 ]; S/ {3 ]( ?' ^6 [: S
/ ^# w' x$ S3 r; S7 {4 G
to setup9 Q7 F4 y2 a' z5 m$ a: A; H
, L* G8 e& M4 v/ e7 c8 b& H% E
ca

- h9 x. h% K* O4 A1 w. N
' R% Q; F$ o( f" [; N9 n- o; binitialize-settings
/ ]$ x; H- s- P( x( f* T

1 }6 F. ]# Q1 Z6 d* D5 t5 E. w- _crt people [setup-turtles]
5 |; H- t+ v; }: J. ^0 n

" f8 P0 D6 \8 |+ c1 n) Jreset-timer
3 X& M- {+ L1 D

# G, X) v6 s( C' D" E+ ypoll-class

$ Q- c# v# x% b' Z
4 f: P2 o# _7 G% q/ P. xsetup-plots

' z  J& z5 q+ z/ I! D6 e6 `; N( D1 p  |! `4 [
do-plots
- {- z5 @% M! ?. w' x
end
0 h) ?( T9 k6 b. j5 N6 Q* s" o( w! A; U* U  F
to initialize-settings: n6 B9 p0 ~/ M& f* p3 Y
* k) _  S5 f3 w: c! |
set global-reputation-list []
5 C* E, {' K5 M5 i" E
9 P6 d/ j1 M' K9 O( B5 q
set credibility-list n-values people [0.5]
; M1 M9 K0 O) t7 \8 m( m4 a

3 l' M: W; w4 K, a" A+ {set honest-service 0

) @5 ^, U$ U7 E' Z0 \5 p0 i7 Y; q( i8 c" K& l! j
set unhonest-service 0

  s! A: x8 V3 O/ N5 z
' _* E3 i" t9 R% Bset oscillation 0
8 e. x( }6 u0 H' H& c& l6 _. e) S) o
8 j3 {# ~4 S- o. D3 a
set rand-dynamic 0

3 f4 U( {' K; S9 Q) cend
& }8 Z0 q; x9 ^+ m2 C1 X
/ S8 H/ @6 p8 ~# tto setup-turtles   n3 }9 b! a6 ~$ n, G5 V
set shape "person") r6 y9 V; Z7 Z/ _6 Z
setxy random-xcor random-ycor/ U" W" z% u# ~8 F. l) J* K
set trade-record-one []: l2 |$ a- Q0 }! u6 M' O3 @
2 x: e  \/ _- E. d: Z5 |9 K
set trade-record-all n-values people [(list (? + 1) 0 0)]
% Y4 O$ `& i# n$ B4 {$ M
' Q0 l9 \% H3 s: o% z; i
set trade-record-current []1 z# Y" ^0 B2 M  ]9 m/ M/ I
set credibility-receive []$ Y5 s8 _8 A$ {7 s1 F6 K
set local-reputation 0.5) c& V1 y  j' ]2 v0 K
set neighbor-total 0+ M- o0 G; W/ _) u9 w# s! ^8 k
set trade-times-total 0$ q2 @, b9 p: A7 ]# D7 T. K
set trade-money-total 0
( Y- g, T# q6 l4 o& F! u- rset customer nobody/ I% |, T7 w( c2 m- O
set credibility-all n-values people [creat-credibility]
$ q. O5 o" d" C1 I$ bset credibility n-values people [-1]
) M3 e" b% p7 ^get-color$ d; |6 Z. u  O0 ?4 Q* \( @
. b0 |& m2 E# ]# j8 Q" z5 ~: A$ l
end3 E2 @# J: j$ N+ f1 V7 a& O( O) h

# {8 m! ?7 _4 s1 ^4 ?( Z5 Z! Vto-report creat-credibility
2 K9 Z7 v/ w/ v, Ureport n-values people [0.5]1 q4 ]# ~. p# ?' }9 r) O3 e
end1 m0 k# |( p6 i( _5 o2 W. V) q

" g# _1 v/ w2 `  |to setup-plots
9 E8 c) a4 k3 i' Q# [" [7 e% w( ]' t9 e+ ?( E! {
set xmax 30

, N: i: J% A6 \' W/ h, z
4 D0 B5 k% f; H: _3 c% \set ymax 1.0

+ N% N' K. a" |+ w6 }1 L4 l/ E! C0 o
clear-all-plots

, ]6 v$ d! ~: K* X1 X; ?8 C; c* }
setup-plot1

0 ~$ W9 n& L9 s- ?* o) f& g
( @5 E6 h# u; w: Ksetup-plot2

' k! e* i# G+ M- V, V3 e/ X, I9 M- w
setup-plot3

/ H( R, m! c8 {* Iend# |  t/ |" a; P/ m$ }
* R. T& i& e9 j$ g4 t9 P, ^3 t& R
;;run time procedures8 n* x1 x' v4 f1 [' {

- ~" x! O+ h# tto go6 Q, E2 N! s, R7 i$ ^
$ M5 b# L" _* t$ r5 D  g
ask turtles [do-business]
/ l. m$ S9 D- p6 N+ \" t: T2 r
end
0 ?) g$ j. Q6 E1 v1 l. m" e3 }1 v$ k, i8 {6 o% ?, O  w
to do-business 9 x) R+ p" p1 ?/ V/ G  H

9 U: e+ }$ a- y% D! z2 z- r6 T( \; L& M2 _- ?( n& U
rt random 360
0 m9 N7 r& V) I9 d

7 G# o9 n, k8 Q8 w2 _% X- ^fd 1

0 b6 ~/ v4 ~& z3 ~) N& O
( q# @2 R8 A" c- U% g# l, O( uifelse(other turtles-here != nobody)[
+ _6 V; \2 b/ x! m( y
2 [" I5 F" B, G! ]3 F+ |6 b2 [! E! L
set customer one-of other turtles-here
4 X* \$ Z+ b+ a* g
" l0 |0 Q4 I$ b0 O
;; set [customer] of customer myself

- ^! p7 x- i- |/ H$ _9 z$ X+ g' I+ r9 M4 G; g
set [trade-record-one] of self item (([who] of customer) - 1)
: K' `; a  F) I  p[trade-record-all]of self
: @. s' ?" g: e. Y. o+ t;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

+ `2 y) B' l: {; u# U
: A4 U3 ~+ q* l# G- k& Kset [trade-record-one] of customer item (([who] of self) - 1)
2 X6 m1 F' D5 Z/ \+ {; _[trade-record-all]of customer

; s% i' [5 E6 |' ~& N
4 E7 ~' h% A: g8 r/ Bset [trade-record-one-len] of self length [trade-record-one] of self

- p9 g2 {+ v" t' K0 F) _4 b; _" V' z. \, E6 |
set trade-record-current( list (timer) (random money-upper-limit))
+ K" M9 n. P, q( T- ?

& m8 q- d, ^$ y" X( Yask self [do-trust]) }2 D9 [$ o3 G: w( k  x
;;
先求ij的信任度
/ ]! B2 z8 s7 _5 X/ ~8 V/ v2 Q5 d! e! z; K% V
if ([trust-ok] of self)
% |* A4 ?2 `( d. z3 I( D;;
根据ij的信任度来决定是否与j进行交易[
* e- R6 y) G  B8 u. V) }ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
8 \6 F+ b" I, b' C. p/ @4 g6 S6 g4 A, j
[

+ H1 g* }# z# X( Y
+ A3 P) [' ]6 o+ |3 l; Vdo-trade

3 C6 c" V; g$ `! A* V6 _
$ o3 Q8 m& o" ]) s+ i) h0 oupdate-credibility-ijl

+ c- A; e6 Q1 T( {; u) B! ?" |  Z) X8 v
update-credibility-list
( d/ Q3 [* d9 W* q
. a+ T* A0 v. S+ \
! P4 x/ ]' |: ?' o
update-global-reputation-list

  i/ c: x, N" I8 |! U! \2 r
: U) W, P! W' M. bpoll-class

( i: K9 ^# |. q" q+ q+ r1 [4 L9 S/ |5 w5 R* T2 M- o4 K
get-color

4 Q( ~3 x( G1 S9 V9 e# o* }
7 B0 A' {1 ?. I6 Q' ^4 F2 L]]1 r* ?) I: ^( j# x

* R* [) ?2 l& u- J/ Q! z;;
如果所得的信任度满足条件,则进行交易9 P* b' C8 a' C8 B% j5 t- w

6 M( `. Q* H: q: K# k. Y[
) R% p$ P5 E" W$ ?2 v+ ^

4 D5 R1 h/ r5 ]- I4 Vrt random 360

3 B. z+ u3 d9 H+ ~/ r* _3 I2 N% w9 S* t- e0 Z
fd 1
  {4 r) \+ {1 k, U$ D7 _' q

5 [/ d( d4 `% {* {1 L5 M7 v: k]
) @( b/ e/ k8 Q/ [/ P5 R, s

  v, C+ @4 I: z+ _end
3 ~' q  _$ d9 g* Z
9 \2 L. A- p% b' k4 ?3 C% ^
to do-trust ; ^+ t: B: J0 ~1 [# J/ G# B
set trust-ok False
% f: F7 b5 x9 s  S& F& W) q! s0 V2 }# U1 E& v
  U0 P6 g5 ]* g+ H# w: m+ c/ \
let max-trade-times 0
2 m0 Y; F, v" K% k" G/ Y, s( X4 J! zforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
, |0 g# F; m0 hlet max-trade-money 0
* @" c* _# m0 _) O; v! N( ^foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]) I& y6 {# F# X7 Z8 H
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
  S' e7 g. C- T2 y  U! B* l: B, ^1 h9 W6 X& b$ Q
9 t1 W, M7 `) G- _( x/ a# N* N
get-global-proportion; v- f- k1 m. S! B) e! T
let trust-value2 I/ o- u. m0 }3 J) t2 y
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)

% `/ a+ i# f) E3 k! Nif(trust-value > trade-trust-value)
/ X6 f/ [( j( U+ T# p0 O2 j[set trust-ok true]; X* l$ j3 N- D8 n: m' e
end# h2 D3 y' n5 ^$ c* r; h4 u+ r
7 @; L6 _2 g& q, G% O- n. x
to get-global-proportion
' x+ ~" D, h. T6 f! }# Xifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
2 k* y" W# y  X: X8 |) G. D[set global-proportion 0]! D( N5 o+ h/ m* i: q! ^: n5 t
[let i 0& ?0 n  f! I' G5 S
let sum-money 0( Y# ?; Q3 ~# A# N
while[ i < people]/ M0 p* ^3 P8 ?* U
[
; |, I1 {  t- tif( length (item i, Q/ V0 `, Y3 w: g6 ^/ z, K  B
[trade-record-all] of customer) > 3 )

) Y6 {1 H* r# F[, `: {8 O: G0 |
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
3 U5 _+ }( o. ~]9 D, b8 _% ^+ {3 h
]4 H) {6 k6 F$ u
let j 0
2 v: W, }6 H1 o# ?/ tlet note 06 a$ N& z* M& C5 w: I( V) e
while[ j < people]+ j7 ~6 w  U: C( y
[8 t! Y0 a1 k  H% {6 E
if( length (item i
5 O# O, Y' M3 R- x. d  u[trade-record-all] of customer) > 3 )

$ i; k5 i2 T7 y9 h3 a2 z! u[
* u, r$ O6 a6 l- j# I& iifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
2 C) }! p/ @7 K) {# e[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
- [% O$ \. [0 R: ]6 F8 r% K0 a) f[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]  p& y* X$ U3 r4 d8 m* c. T$ _
]7 X, F. B) M  e! S. C" U5 J# U
]) q  L, B/ F0 g/ v  S8 l6 p, D
set global-proportion note3 M4 K: B; ~+ P. R) J7 y
]6 e7 \3 E( l* }) S( G: V" X$ v
end
' @" E6 v+ W# D  `& f7 A; q3 j' P9 z( F. Z: X" ?# i
to do-trade+ T/ M- X' n+ ^1 k0 g
;;
这个过程实际上是给双方作出评价的过程/ _0 s+ `- T( v! o3 C6 C; N
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价# O$ d7 l4 A& W
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价3 {( j; z( |8 Q4 Y/ m: l
set trade-record-current lput(timer) trade-record-current
. X! F$ R/ q' V, x;;
评价时间6 n1 x4 L2 s9 a& n6 T0 e2 ], m
ask myself [4 E! u% v7 |5 i$ l
update-local-reputation
! o7 @! P+ p6 T6 Nset trade-record-current lput([local-reputation] of myself) trade-record-current
" w1 h+ [3 b0 `1 y/ i]' }0 b& |' r$ R
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
3 B6 q& x& e: S( M4 b. Z6 m;;
将此次交易的记录加入到trade-record-one
; l2 V( j3 C2 y* F" jset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)1 w2 q& ]( m$ q* N) G
let note (item 2 trade-record-current )- H& M+ M4 o  k1 u7 i2 _6 k6 I
set trade-record-current
, p8 x3 \7 N9 d(replace-item 2 trade-record-current (item 3 trade-record-current))
7 `, d9 |0 ~6 z: S/ D4 V
set trade-record-current; W- w( m9 k$ w$ T* w5 K
(replace-item 3 trade-record-current note)! |$ Q+ K- W8 z5 {
4 ^; f7 m# e  n
3 ^+ j) g# W" X, R* d. p
ask customer [4 k4 D8 `. o/ O2 C; y9 L$ J5 Y
update-local-reputation
1 Z/ @  l4 U2 _0 F! F1 `; vset trade-record-current  J8 {' q& Y: {+ |1 \* c& L
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
8 ~, Z; D* |4 i2 ^, y
]3 V; z4 B* ^3 k
' g- l- c( X; I9 K+ x* T: B) H

1 t# \0 Y! `: T" L: t" c+ O$ T( pset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer8 b# \6 f% S  }+ F8 `; B
9 x( E0 F7 b/ W& x' s
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
! o3 L! c; A  v- _2 G+ ^2 u;;
将此次交易的记录加入到customertrade-record-all
, J6 I' U4 a/ d# y& A! {# |% Nend, r0 H. K! V  D9 ?

: K" i# G" c' H% Wto update-local-reputation  Z- p7 D' D3 [; N$ ?5 z
set [trade-record-one-len] of myself length [trade-record-one] of myself
, \4 X2 |, o' P4 x: t* A7 M2 w+ [) @/ i1 ^$ d5 V: l. A

9 l  X5 t" Y1 S+ ]7 |4 @;;if [trade-record-one-len] of myself > 3
* v! L" B/ v- A# s3 [0 J6 J0 g, l3 l4 e
update-neighbor-total
: x' z! q5 {. s, i' H;;
更新邻居节点的数目,在此进行
- ^, t7 x2 _. y9 W3 Ylet i 3
9 M" x7 C0 o( t! l9 [let sum-time 01 |: `- l+ i8 l# {5 l
while[i < [trade-record-one-len] of myself]9 F7 J$ ~0 Y' y6 R$ _: ^
[) d5 f- _7 L$ l% D
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )( Y' \, \& a0 y% C0 R6 ~; C
set i8 {; [0 ~( g' ]
( i + 1)

9 J# Q9 C  `0 B; e! e9 ?]- D9 S; W4 T8 J& X* Z- A4 B
let j 3
- s& _6 ~5 U- G1 |let sum-money 0
/ f' ]4 I! w7 K$ u5 T. W( |5 twhile[j < [trade-record-one-len] of myself]
4 ~2 ^. X% N* L[( s3 r% U$ ~. H6 x: ?" ], W
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)3 M$ @! _9 n2 i# `
set j, l6 R$ d/ i- ^" g9 |7 }
( j + 1)

" \5 F$ o; N5 t* y/ B# X* u7 _]
, H) O6 }/ Q3 W6 @4 e8 [let k 3% i  H5 o# V' N
let power 0
4 q  r, Y2 H. @# _2 {5 V" vlet local 0; x; h$ l1 T1 ~. J) f/ ]( N5 w- `
while [k <[trade-record-one-len] of myself]  y. D% x* @8 [. |
[4 u" z7 n9 E. b, o$ _  S( p8 ?
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)
" ^1 G+ j# {0 G( B2 c4 sset k (k + 1)) [7 m6 O5 r' d2 i* Z- w$ s
]9 K+ f2 m6 z5 m/ f  l5 f
set [local-reputation] of myself (local)
  _. G+ Y+ z6 E$ Q' Vend
2 u; p. a% v2 E6 J" _
# w# {6 _( f* d5 @3 zto update-neighbor-total' m4 m3 G( p4 A2 u2 U3 _+ x* z
0 [+ Q/ D" S8 {+ k2 T
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
% w3 ?3 b  p) O" r
. a0 \* O9 F# K" F  }  n4 N$ R- O

& h( [( X4 J5 A7 x# Xend' N# h9 V( g- I, j8 v& S
0 I" d; M" z; K; |
to update-credibility-ijl
& Q! B- T: U. l3 N) e# a# g3 F& Y1 g; M% X7 B7 \
;;
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。
; z1 B' s' ]2 i* g. R1 s7 D5 ^let l 08 m1 k6 y% q! G$ Z; f9 U  b1 l& L
while[ l < people ]" [+ E( J4 i% n' [* `
;;
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
- E; i/ M4 }: p7 P& g4 W; j[; I! J% O( Q# `. \! T1 t4 u* Y
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
0 c$ Q" S/ o  w/ M' G1 H, a4 P7 N, r6 mif (trade-record-one-j-l-len > 3)7 a+ ?0 W) C* h0 G
[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-one9 `, k) G* H8 p8 g
let i 3
, h3 v/ R  C' l% z  X5 I" Clet sum-time 0( b: T) B, m8 |# N5 t  ?. t3 B6 }
while[i < trade-record-one-len]. i' z0 \& t$ y
[
" z; p; N, y. Z0 d% A6 |set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )2 G; `7 G3 \% f5 p; d
set i
, ]2 U6 c7 M4 F$ k4 S$ N( i + 1)

4 _$ r6 s0 X0 F]9 J9 f1 b& z( x2 O4 c
let credibility-i-j-l 06 A5 \: i/ B) z$ ]0 D: W- a
;;i
评价(jjl的评价)3 ~0 ^+ E% v& A/ a) j3 l2 O
let j 3& ^( f$ Z* K0 G/ P: z
let k 48 w6 u( t( _$ ~5 H. P; F
while[j < trade-record-one-len]1 G7 l0 O, A" Q* D8 o. C4 g
[2 p  }! `; J! x0 C8 z4 E
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8 h- S. Z; V: C1 |6 F7 l: ]+ X
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)6 h) [! {, [) g; i9 {& O' T
set j7 }3 f  P+ q" J; m
( j + 1)

6 |( c4 C/ A3 Z# Z], h2 }# z( x- c" g0 x8 @
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 ))
% W5 w( m( R+ ?6 q! R* R) v2 I' \" N, M; z. v$ c

* U/ Z$ g1 P5 m+ Y8 dlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
, T! U, B6 I8 s) q;;
及时更新il的评价质量的评价
" c: G& z9 a1 p; W, xset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
$ u7 L: K- N& J/ k' W  G* uset l (l + 1)) x4 T- H' X3 v$ G& a" a1 ?
]
& V% O! ^& N8 m' ?5 Zend
' c. T% {' l, @8 B3 h7 L% ^% [. `- a& ~% j0 k/ m( n. j( ?. `
to update-credibility-list0 i! x5 d: ^  @, n( k' f2 l
let i 0/ ~! g- x5 a  o; O; P8 i! \' x; F
while[i < people]
  g3 X) ^/ Q; F( {% H+ s[
: j) `1 h9 U) E8 r0 z: C: b/ u3 b6 flet j 0
& @) M, d8 T( N' ^: q2 }let note 0. x& ^0 z# J( U( q
let k 0
9 I* Y/ }/ O+ N. R8 Y2 `: h;;
计作出过评价的邻居节点的数目/ g% d: {) ], u# i7 Y
while[j < people]
$ }$ d9 W4 u7 F  ~5 Z[0 F# J* Y2 O' {% v' L( X
if (item j( [credibility] of turtle (i + 1)) != -1)
: |" r2 k! ~- g5 b; N5 B" P+ R! {/ h;;
判断是否给本turtle的评价质量做出过评价的节点
: C* J5 J4 F+ k  w/ y$ o, i3 h' Q[set note (note + item j ([credibility]of turtle (i + 1)))3 a. T. C' n8 g9 i5 z8 v
;;*(exp (-(people - 2)))/(people - 2))]
8 T( v" v8 Y. G
set k (k + 1)1 c. c4 E; @% ^  I0 n+ J/ H
]
* U/ l4 ^5 K0 |set j (j + 1)
2 v0 Z' K" k6 x3 j% \# t]
4 Y$ M) e3 N* C5 Y& dset note (note *(exp (- (1 / k)))/ k)" Y0 b9 o3 b3 ?" {  [
set credibility-list (replace-item i credibility-list note). D( g- k. J- v4 q
set i (i + 1); v* v0 p6 U: Y
]# L. ^% s6 {* L3 t3 _' P1 T
end: v* h: J1 h) M0 c5 O3 h. ?

2 r- x) {( y+ x- Rto update-global-reputation-list% r  }$ Y4 g) E6 G" K; N
let j 0
' P* {' ~0 y0 M* c5 K: l1 }1 Uwhile[j < people]
. L3 c% }: ^+ @: p[' b3 |1 \9 B1 `
let new 05 x" o4 v: i% d' d$ K: ~
;;
暂存新的一个全局声誉9 M2 _# c9 }' K: ~. n+ D- N
let i 0
5 f* K- H; G  @% [7 blet sum-money 0
* _+ t. o2 G! Wlet credibility-money 0
& }, P% N! g9 t: s+ bwhile [i < people]6 B* Q* Z6 s2 _+ [
[; B* H9 n* Q# ~, k. E
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
# `# J" ^% K, [" [# x1 Eset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)), y: ]6 r' t8 f+ E4 a, j
set i (i + 1)
- s. R, I! U/ {( H]7 y) I( _# t; r0 F3 Q7 L6 G& n
let k 0
' |( A8 @) ]( J* x' z/ Ilet new1 0$ y( C7 ?) F8 ]6 @$ R0 d* D
while [k < people]% |  _- J9 y: V' z- Q0 s" u
[( g' X( N7 A9 z) e; Q
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)( I& L6 T3 e+ J* `- J# M! r; O
set k (k + 1)
; z  @6 {; Y/ k( B8 q6 q% ~]. K  ~7 L" e2 f! A
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) % a: p6 o  q4 B# U& K
set global-reputation-list (replace-item j global-reputation-list new)
/ ?8 h1 b; f+ m: iset j (j + 1)* L8 o) E, p9 D
]
( M7 M8 a9 `& u( vend6 t  E+ P2 D4 P  c$ M

8 K' E) x0 u, f$ w1 x$ G% X9 `8 @8 J3 W7 F  C9 U/ T

9 i1 h8 N# t, L/ Sto get-color
" E1 t: P9 n" }# x
, N2 N7 B. U# i3 zset color blue
& C% W" w) D% q
end
2 \5 w' h" \  o! w" @9 k
8 h, g+ K! s! [to poll-class* e. S/ _* I2 B4 s$ _" B* z
end! \4 `7 v; X/ O2 K) H' R
0 I0 W1 I' a! R& b( a4 p  J1 ~4 I
to setup-plot1; C, q1 ^& g9 B- f0 F5 e& a9 j  B
- A4 U0 F; z# p0 l5 h3 Q
set-current-plot "Trends-of-Local-reputation"
* V+ ^8 P7 G$ W: q
9 E4 [' M* G1 m; b, u3 X; ]" `- I
set-plot-x-range 0 xmax
2 U& d. I4 k8 F2 _) s0 c" i! o
: ?1 E5 E5 W% i1 J
set-plot-y-range 0.0 ymax

2 C/ j/ o7 W% c6 [# rend
) L" c7 Y3 V8 u& A6 m
, H4 h6 J: y' w- C. Sto setup-plot28 S# R# Y0 T# d0 _; Q) ~+ ?

$ R# d1 |8 m; W8 S. J- b# m) D  ~  p3 Dset-current-plot "Trends-of-global-reputation"
- a, N7 l) l8 n" T; q! @
& g* |/ M% a2 B8 l! E2 b% D
set-plot-x-range 0 xmax
! Z+ _8 E* q3 a
% {* @- C/ ]4 p6 Q
set-plot-y-range 0.0 ymax

! p5 Y% N$ N& Send
& ]# X2 K# \! m) |. l- D0 w  j9 }% f& }# z" A: ]5 D) I
to setup-plot3
9 i. \  ~0 X% m* L
! v8 k4 w( ]7 l; Mset-current-plot "Trends-of-credibility"
0 e, ^5 u0 p& S) H3 s, X& H, h, p

3 N8 n! S9 k/ j, hset-plot-x-range 0 xmax

# ^1 p' Y* M  N: s8 g; _9 T# b( E0 m
set-plot-y-range 0.0 ymax

4 K" D8 G/ M; d9 bend: Q/ B% c5 w! F& l" H' a/ k/ x/ _% @

3 Q4 ]6 i, j* D9 z8 e1 R+ ]! Hto do-plots/ k0 J$ F2 I2 v3 V' H/ E5 T8 M3 d
set-current-plot "Trends-of-Local-reputation"
* u) r4 m. W8 y8 Uset-current-plot-pen "Honest service"
1 c) N" J2 p' u% b% }end
( h* t6 m) _9 o; W+ I5 Z
1 C9 H/ }7 u1 Y- x[ 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.
/ Y7 w( f& Y/ }3 a1 L- b0 q. }+ ]0 A; O. {. R, f
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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