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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:
2 D" M% ^  p8 p$ i1 y- _* Wto do-business
9 V2 V4 s7 D8 H8 ?0 x) _ rt random 360
* R0 j% f1 A  @5 N5 l* h fd 1! |* e2 |$ t6 K  a
ifelse(other turtles-here != nobody)[
( {3 b4 g3 J& [5 U' `% A   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.
4 e; R! D' r7 q5 O8 v4 ~   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    6 @" V1 N% W6 ^! ~: S" c
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
, {% [0 x1 c* e, ^# X   set [trade-record-one-len] of self length [trade-record-one] of self
3 W4 j5 A- H; _% f3 `- ^2 I# W, n( J   set trade-record-current( list (timer) (random money-upper-limit))
) l. S5 D1 {- T8 i1 y# @8 i" F8 L" ]
7 w7 n4 T3 ~, e+ n, k问题的提示如下:* k3 J2 [7 D5 D# `6 k4 Y
9 @+ k0 ^7 ?3 h' W/ u& @/ f
error while turtle 50 running OF in procedure DO-BUSINESS
3 Y7 h! Y) L6 ^2 M/ k, a  called by procedure GO3 H9 W* s; f# o
OF expected input to be a turtle agentset or turtle but got NOBODY instead.- H# S8 j  O9 g; V6 v
(halted running of go): ~$ f" S) J, J8 ]8 |: _% l
0 G& N. u% ~" W& D$ r  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~~
" d9 k. y: P+ Q2 z# a! l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) h8 d$ r0 g5 s& T9 W9 L
globals[% M" o; P% _- J9 j/ E* }
xmax
' R7 J. j9 b0 Q& nymax/ `; A: Y3 O; \/ z
global-reputation-list5 T" v/ {/ F5 u$ ]; t
3 m; v% ~* I" C, s1 I( m7 q
;;
每一个turtle的全局声誉都存在此LIST
' \' K+ m1 m* M) O4 n( o) vcredibility-list$ n" ~) r1 A( ^$ U  C, m
;;
每一个turtle的评价可信度
5 |! n- N( W' I+ x) h* a, a1 jhonest-service
& N  j9 f6 l* O- z! Lunhonest-service- V, }) S2 z' H3 o& x6 d9 h
oscillation8 q. @# I9 H5 y
rand-dynamic: r& Y, ]; m$ D/ u8 ?
]2 r3 P6 T& H3 t5 Z

& x, l6 ~" [  p; nturtles-own[2 V# @( T) N. u0 v' y( I
trade-record-all* _" u; x: z: `9 @/ R. f9 Q
;;a list of lists,
trade-record-one组成
; ~# P( Z% u7 i, ^trade-record-one
3 i0 y4 l/ R/ u) e4 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
0 z9 u; E7 h1 A3 m7 c; l, F# C3 A
% d% S" ]/ |# w;;[
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]]8 X" R! A, t% j
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]1 a# K6 G- j: s1 m+ M8 w" |
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' G: ?5 h! `6 P
neighbor-total& r& c/ z+ ^- Z# B9 e" G
;;
记录该turtle的邻居节点的数目3 H3 U( R: d- C' Q7 z/ ~
trade-time, R6 I* B2 O+ t. O& X
;;
当前发生交易的turtle的交易时间7 h( t! @8 q) R! _
appraise-give
( I8 m! l" ^9 [' R* N5 Z$ H/ D;;
当前发生交易时给出的评价
' ^) o# ?+ K$ Z6 a, p- x' U4 Uappraise-receive0 B3 K3 {( d$ T3 O) f* U9 L
;;
当前发生交易时收到的评价" D! w$ \7 p' d$ n
appraise-time
* ^/ U: a8 q3 g;;
当前发生交易时的评价时间
' V5 N9 {' a. |! V& Olocal-reputation-now;;此次交易后相对于对方turtle的局部声誉( X/ d+ u4 s/ D
trade-times-total
% ~1 v" N+ O1 O8 I$ x;;
与当前turtle的交易总次数- q' g  N, p" _7 s" m
trade-money-total
# g5 |: Z" z/ s8 {/ L8 }0 {;;
与当前turtle的交易总金额
7 a8 `. c* b6 P" m1 E5 G; T0 Mlocal-reputation* f) W& x8 z  m" ~8 L, e: A
global-reputation9 s, u- h2 i9 V  Q6 {
credibility/ I3 Q% ]2 u- y' d" q
;;
评价可信度,每次交易后都需要更新
" i. Y1 D# `( a& M. p- x5 D/ l) scredibility-all
& e4 Q+ Z. E# o/ Y% R. 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5 U) t' F6 I9 h, b* i0 j/ m
' F: p2 Z9 _! g1 d& i/ D
;;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0.57 c. \, {) x5 D
credibility-one
& j" Y5 I; D. w+ M0 {;;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
  ?5 R$ k/ j! @9 ?8 Mglobal-proportion# H9 T( R. a1 ]/ R, [
customer
" `0 y) K" \4 ?% W5 n- R# Fcustomer-no
3 k1 X' G# A, W/ s; ^" Strust-ok
( j& L3 u3 @1 r+ Y7 ztrade-record-one-len;;trade-record-one的长度
$ h7 h( o+ y6 n; M]
' O( q% {8 d, d1 _2 O( ]7 E( }- H  c! }4 e5 V+ p$ i- M
;;setup procedure
- Q& j4 D2 [% |% x
% e# h5 \4 H/ r  y4 }to setup
' X5 `4 a4 Q3 M
1 w! i4 c2 b$ Y. X0 y! ?  X% ?5 Gca

( [, {3 j/ O1 w" C9 D0 x& S. Q2 \7 I4 Y; I4 E' f0 d7 k$ F, w* L
initialize-settings
; d% h. U, ^5 b2 a) Y" _/ L" I
& O5 G3 m$ R4 z' a
crt people [setup-turtles]
9 c$ E1 Y6 M" B; d/ {, R( q) R

9 Q. \: e2 A; X4 k5 K) |& S9 Breset-timer
. }# E( T4 R/ {# a4 F% H
# y+ k% F0 i6 k  _4 X
poll-class
* v3 j% F' _5 P6 t* j7 a

  Q( h% N# c& I& c" isetup-plots

/ o$ {# |3 w, v" Q% @; l4 S% l& S1 \3 y3 z0 J' j6 o$ @- \8 \
do-plots

# ~+ a) W1 r  Hend- v  F$ ^4 m  X2 i" D. J- v* m/ Z

2 d3 N! R  c: M7 r6 F* a6 n9 P2 Y& zto initialize-settings
! }9 [5 N+ `7 U/ ]" a$ Y' v3 i6 b+ R% F; N) E  h4 Q" {& ^0 n
set global-reputation-list []

7 Z  y3 C* f# L5 p3 K- u2 K5 c" a
set credibility-list n-values people [0.5]
$ g- ?7 e5 s' {  y- p3 p" V

* q8 E1 j6 G' X1 W3 Nset honest-service 0
+ F7 t( }& @' c: S, H; F8 L
0 `- x6 c; F: \
set unhonest-service 0

2 F9 F& z0 X) F- y$ D9 S
% }- {  @, m7 J- T8 W' [set oscillation 0
# `+ u5 v" r, k) D) V+ Z- [

" x' M, s+ [& W& W, b, v- x( Qset rand-dynamic 0

1 I: A7 ]* _; f" i4 c' n  u9 f- h; Uend
8 q* m; N' U; v% e9 N
7 J4 Y( f8 o' p% `( E( Pto setup-turtles
8 c% }  g/ e' s$ ]) U' Zset shape "person"
( F. U% t3 y4 c  s! G+ ?# F6 m- wsetxy random-xcor random-ycor
3 M- \* g4 ~8 A' v  y+ E, Fset trade-record-one []
5 }6 e/ M: [3 V1 |- l0 n

1 a0 k- S4 q' Z6 {/ o7 Tset trade-record-all n-values people [(list (? + 1) 0 0)]
8 y# p0 |, u% b. w/ C) t3 d
. \+ r# Z* d; n9 O3 f7 m
set trade-record-current []
7 r* o! i9 U* J0 t1 _4 Rset credibility-receive []
1 n( D6 D& j& h- N" D' T; zset local-reputation 0.5
1 M# O# [0 |+ vset neighbor-total 0
% a+ J/ t: X/ p. Sset trade-times-total 0( }/ t8 ?" ]& ?  Z8 W& c
set trade-money-total 0  c* m3 d. k# e% ~/ m
set customer nobody
0 r$ d+ Z$ k/ M) Q! f0 s6 H8 V% pset credibility-all n-values people [creat-credibility]% o6 v% v5 f1 b; F2 U: o
set credibility n-values people [-1]
1 o0 u* L! }6 |; ~% Gget-color$ k* y$ u! e- ^5 `) o2 k3 Y; U
6 q4 [3 X& E- H9 |
end* T) j# U3 G; R+ L
! _# K4 [( N- d
to-report creat-credibility8 X8 ]+ L/ f  E3 W6 H
report n-values people [0.5]
9 d5 O6 m" s, s3 Q1 ?end5 D' i; P/ K7 A5 S
3 {4 p; d1 ~0 C! b* s, G4 Y& [
to setup-plots
6 x& [5 i- Y7 K" O  M9 q- O
, [  {1 q6 }. P: I" l% R8 Q7 tset xmax 30

8 ]7 U8 d; ^; T. x/ Q& U- w% ^2 r7 ?; |( i
set ymax 1.0

) X! u! {( m; d! Z# t
+ K! N" y7 r8 j0 x/ |clear-all-plots
$ e5 s& L) }* y, \
* ]" `: E. w1 ?4 M! _+ k8 @
setup-plot1

+ ?: G3 c$ G% M. ]2 v# ^2 v' ^8 u9 m+ J6 t8 b1 X
setup-plot2

/ _. |5 c) u( Z5 e/ B5 z4 ~0 [" x) [; ?# k
setup-plot3
2 |/ `( i  q3 u7 n  ^1 K
end5 O; ~. i8 H4 }( R, H( g
5 a) |, P2 ]& Y$ [, F6 a9 D- g& z
;;run time procedures
% Z, Z" N: D9 {! _! I3 x! |8 Q2 t, \" \6 W) V3 l
to go
4 U" m  M- m8 a7 f+ y* B* b  e) C  Y/ W" f1 z/ e
ask turtles [do-business]

3 }+ Z" a- b; ]* E! Gend
7 z, J) n2 w2 f1 y, G5 b2 i1 `! [* I( m6 k: |) _% ~9 C
to do-business
" V5 ~0 o1 |) Q1 G' n5 o% [, i
  U; e5 I2 D1 B; O& T  N+ l

( ?5 @* t- z' I% }# drt random 360

# G3 S7 @+ }+ G7 c( f, {# ]/ {. o/ [* E1 J* I9 Y7 n
fd 1

; M( z* e) b! B+ m: U# i, {9 `4 y2 K3 n
ifelse(other turtles-here != nobody)[
7 X+ J5 _+ W* }3 L
# v& O' N& S) o' u  f6 {
set customer one-of other turtles-here

+ `( U- ^# g/ s; \: a
/ Z$ k6 a7 z0 t7 l$ X8 H;; set [customer] of customer myself
9 a# L0 q- S3 M& R/ N2 R) X
" y+ O' i9 W( V6 }
set [trade-record-one] of self item (([who] of customer) - 1)
  s4 i5 F, ^6 \* n4 `2 g[trade-record-all]of self, w- G' ~4 Z1 \
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

) Y0 T5 S) c  W( o, m) n% ?
$ z) Y( ?7 b9 T) @9 Z5 C0 dset [trade-record-one] of customer item (([who] of self) - 1)2 i3 p: u" ?) R
[trade-record-all]of customer
" w! ]9 _/ J! h% S0 ~5 s" P
$ J. I3 g: U1 ~( n- O1 v$ w
set [trade-record-one-len] of self length [trade-record-one] of self
3 F1 Y* u% H* [" a% M% Y1 ~3 k' F& S

/ y% N( @9 X" a) C9 |; [, j1 A- w' Zset trade-record-current( list (timer) (random money-upper-limit))

, q5 `' X* \$ U# B
$ n! A" L2 u9 d+ eask self [do-trust]
3 T& \7 ]) t2 Q;;
先求ij的信任度! I% g2 Q) m' O+ p, l
+ }* U8 Y5 W3 s1 }% e
if ([trust-ok] of self)
5 T' D5 x/ `, k! x6 K;;
根据ij的信任度来决定是否与j进行交易[, L+ r, u2 i$ Z7 x
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
; L% `3 m: e! L9 Y0 J
4 U5 I# E4 y: {5 l' G. z* Y0 P[
7 C/ w6 J+ u3 R
+ X! }6 r3 B( i
do-trade

6 k/ X, P2 A  Y$ k6 u6 A9 k! ]6 Q  U+ |
update-credibility-ijl

4 l  a7 `9 M* j: {8 G
- T& ]3 q; O) bupdate-credibility-list
) L3 ]1 `2 c# o  q7 ?- m
7 A# p" M( r3 V/ j' z+ G: i; C

! M1 P' u: o$ f, @, V7 jupdate-global-reputation-list

# f2 q* @; `4 Q2 J, P2 @, O3 F! Q$ j  G4 d  n, _9 ?
poll-class

/ S' m& p4 W# l) O. a/ ]
, F" g$ _% a: h6 x/ q! kget-color
, y( c; [- S- p# T. g) U+ X
8 P4 y3 P6 y( u
]]
4 X! p8 S+ M3 x3 {% _8 t; v) @3 x5 V9 I9 S5 {4 M: F
;;
如果所得的信任度满足条件,则进行交易1 T5 o2 c, `0 V1 v. L3 B
' R# b7 [' n$ C
[

1 K. H8 g: v3 U) u( A- I
7 X0 x% |7 N4 O/ N9 r" {( _rt random 360

  S; M- L% Z, P" E3 L1 q: q( \  G) U, {" d9 r* S, I
fd 1

7 T, H8 i! q. V8 n: L
  y6 e# ~) u  S" g]
' A0 g2 Z8 u9 @) i7 R9 Z

! i% ^& r% A6 Y. B' \' E/ c6 \$ ]end
. w% N! z5 S$ U9 F8 ]9 R

2 A$ U* |' a; H9 h0 M/ K: cto do-trust
! n: m2 |2 f* {/ xset trust-ok False$ F: s- y4 Z& Q8 V8 I
- {" s' e; U: ?! n& |  {- ]$ |) B

6 c! K( w9 [# j0 t3 l5 a" Jlet max-trade-times 0
" X$ m4 W: P  j5 O+ Qforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
' o5 y* V) a3 _  C2 `let max-trade-money 0
. P+ k- n. {, Z% l# {; Aforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
% p3 z0 m5 Y3 U2 rlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
: n- e# g0 c8 K5 i* I
, z$ [& q: m- s3 b* ]' S: C
, b8 s& e# t9 c  _: k
get-global-proportion
4 I: _4 n+ p( {, L" Z5 V* Clet trust-value" D/ X* v4 b6 q; ]
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)
0 g: `4 u3 e& e1 I  A* r0 z
if(trust-value > trade-trust-value)
, C; b- U- n: L$ w( B[set trust-ok true]% g0 [" Q0 F2 v  P
end
% y- A' T2 F2 F# o( e' A, s
, C% s, x6 P9 b. t: t5 v" f7 fto get-global-proportion
& p: m: X0 u: U/ oifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)4 b% W0 Q! O$ Z3 W  n
[set global-proportion 0]
& M2 S# g: |8 V  b- c! S% f" d* A[let i 0; {1 N& c6 J2 P/ t# k4 p/ }# q
let sum-money 0
( b6 [2 U7 h+ p2 Rwhile[ i < people]% N6 O9 {$ D$ a, p1 m" c
[
, U4 P7 `5 e- {if( length (item i
# q) d3 p! c! G[trade-record-all] of customer) > 3 )

+ s9 w5 i' ]+ S[
1 \7 P8 w. w, h; |; K; G6 gset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
( p' G$ d, N1 K7 `]
+ e6 f# m7 J# t6 K. h+ H% d]
- \1 [# _2 ^" g+ wlet j 0) P% ^  g3 O2 B5 c# q
let note 0/ X' S3 O8 C6 G, ?
while[ j < people]7 J* e% e' A% f* ^9 o& Z
[+ R8 H, W: ]8 g5 u
if( length (item i5 Z! E. |. f  X* d
[trade-record-all] of customer) > 3 )
# j4 C3 C1 M8 l3 E
[
+ \/ k# N" K% R3 j1 Nifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
! }9 |6 M+ O6 t, i) f5 A2 \[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
& F% p0 I, j4 a" W- e7 k  R0 Q[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]; L" c# @" _: d2 z$ o4 L& m
]) ^* x+ |. m- f
]
! U7 V5 v$ Z) }: m0 X; Aset global-proportion note- l" c( c: ]. G% m% q3 @  k* c9 {
]3 ^, b) I2 S. f" p& b' |  f5 \
end
2 U! Q  d& O0 ~7 z0 j1 O+ W- O6 Q- r- j4 v
to do-trade
+ ?: k9 g  r- z6 U* }: ~;;
这个过程实际上是给双方作出评价的过程- d, t$ e% h1 l6 Z- E
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( g( G6 @) ]0 c5 |set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价4 o- S/ O3 l% R! s: K  q7 f
set trade-record-current lput(timer) trade-record-current
2 z! a* K" l6 L, G* H;;
评价时间* P& G( J! _; a2 V+ d3 L
ask myself [
- q7 G5 a9 ?* O: }4 Oupdate-local-reputation
- ~* f6 k. d3 }' D- \* e/ A+ uset trade-record-current lput([local-reputation] of myself) trade-record-current" W3 d3 d- l5 b2 a/ y) z- ~! Y& q
], S/ G; U9 }' ]. E: @  J  Q
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself- m$ Y# g8 h! w4 u! ~6 \
;;
将此次交易的记录加入到trade-record-one! U# O9 H2 r, ^: f0 i
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
( x8 I' m+ e. tlet note (item 2 trade-record-current )/ z% z, ~8 w4 s! H
set trade-record-current
3 s. f+ C7 l4 c1 t, b/ I6 h, G(replace-item 2 trade-record-current (item 3 trade-record-current))

9 H/ s+ t- V" B" p8 eset trade-record-current  ]5 d5 _; H- d  Y( j& u
(replace-item 3 trade-record-current note)
' |4 m: }6 M( C5 C) L8 d: l, P
' F% |$ T# l8 B. n7 W8 q, f
2 M5 V: ^4 [' g; F; E! _
ask customer [% P9 g% |  Y! R$ _
update-local-reputation9 Z9 d+ u* {& e; R6 j, G. `
set trade-record-current) L% n6 p" s/ l  f# L# E
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

; b/ @# a8 d$ j! \$ p; ~]% m" a! K% G  _' ]/ a+ i

& r8 V% @( o/ A+ X2 b
& L* A) E$ b& B/ n* s% m
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
  e8 U$ E" E' a+ l
3 b  E" V3 M* v0 `
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
6 `6 i( n! J4 }4 N5 B;;
将此次交易的记录加入到customertrade-record-all
6 S- C% P. H! }end
0 c) \0 t2 G1 a* p+ P
: M4 @+ z1 i! }0 T4 C3 o! qto update-local-reputation
. _$ v, a8 ?# N; zset [trade-record-one-len] of myself length [trade-record-one] of myself
5 ^- C0 k8 g& D# \* N5 Q: C
/ |6 `% v. C& x  X/ F; S* d3 b( b0 t2 W: g5 ]1 x
;;if [trade-record-one-len] of myself > 3
$ t, I1 x4 l" D" U9 Y6 h; E. o
update-neighbor-total6 ]. L2 ]0 U* B$ L3 \! d. [
;;
更新邻居节点的数目,在此进行3 o( [, T/ @+ U& @3 e/ v! T
let i 3
; c0 {0 J! h3 g7 Y& ilet sum-time 0, q( S4 E, V" j! R% U, r8 D# h
while[i < [trade-record-one-len] of myself]
/ ]8 r9 \$ K# E: h9 @) o- d* Y2 I7 U[$ ]" X5 t4 o% B& ]7 ?
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ). B5 X; \- W. m; y! w1 D  v2 D! O& s
set i2 x  w  E0 U# C, J2 g
( i + 1)
: w* d2 `' K3 q8 ?. `2 s4 z( t
]
% l9 v! ]. O/ r; \) Flet j 3: C& b. d, W. o. y$ y
let sum-money 0
, Q5 R5 b& ]: {2 Vwhile[j < [trade-record-one-len] of myself]
& U  C* _3 v# g( J7 H[5 j2 H# S) O  ^' I6 j
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)9 U( B3 M+ W/ r9 \
set j
6 \6 R( Y8 e$ l/ w( j + 1)
  P6 n2 P1 k/ T" r/ `2 R. I
]3 O( Z! h" M% {: J  E0 u9 k& L
let k 3  ~( |3 r. H- g, X% ]. C) d$ L
let power 08 N& \+ m: X6 g4 ]
let local 01 n: |! B0 h8 \
while [k <[trade-record-one-len] of myself]
- Q6 }- ?3 t. {& R# x4 }8 n/ v3 E[
6 R# ^& x( g+ y' ?0 }" Wset 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) 7 C3 |2 k3 L6 @. q  O8 O
set k (k + 1)$ W( d1 v* Z2 L3 ?- Q
]
0 V- n) o) y/ N/ I+ M- x" F* pset [local-reputation] of myself (local)
# S* j0 }. t3 u' ]  S3 L) N4 t5 mend3 q8 z0 F, o+ b6 U- A
; f8 [0 E: U( @6 x
to update-neighbor-total; A& z7 ?6 a  o4 u5 E1 E: g3 N
1 H1 w4 y, O2 V9 `, n
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
; H. X  G8 c% m- t8 K5 f, ~/ k* n" p$ K3 _0 l

& \( I& o1 Q: y) u: ]3 F: Q0 fend7 E* R+ s3 J( d$ G- b

1 v# c( ^( J3 E2 Zto update-credibility-ijl
8 |& b" M$ j7 G! q$ R( q
) `- Y8 M' C4 ~/ U1 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。' o: ]3 U' o  {: @% q  c6 g/ q% }
let l 0
+ i0 \% }# m& Z+ s0 s% I2 B% awhile[ l < people ], R2 R1 W; N; M8 G) c2 G7 F  Y" _" e* w
;;
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8 q  g/ a; Q2 P8 `: ]
[4 k8 G* X6 ^& }2 S6 `) a1 C9 q
let trade-record-one-j-l-len length item l ([trade-record-all] of customer), M+ W" h( r7 d4 J
if (trade-record-one-j-l-len > 3)  v! C. ^: C! g4 ^& i6 s; C% }
[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
0 Q6 Z7 u5 J5 N& \4 I! |* jlet i 3  z; O3 {( G7 Z5 E$ g( G1 f/ K
let sum-time 0
: Y; L1 m9 m8 T, k( Rwhile[i < trade-record-one-len]
! l; X  x. _) Q. A; O8 I9 @5 L[5 W0 O- b/ Q' V
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
7 g- @. ~' z- x0 m4 k" ^: vset i
5 J- T/ J8 w  H0 M/ M% F( i + 1)
8 P5 d2 G  {" b
]
& `$ T0 I4 Y" `1 A5 k( jlet credibility-i-j-l 0& c# `. A) j+ B6 @# }5 n, B9 n* q
;;i
评价(jjl的评价)+ A* [# N9 D& ?3 Y! h
let j 3( y% M3 P! C% G
let k 4+ N0 w1 }6 H* L, `
while[j < trade-record-one-len]
5 @4 ~" ?+ E8 b9 O[
* M: L  v1 h# O+ t! fwhile [((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" K/ J8 ~9 _: S5 [$ o% W" n2 Z- }
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)
9 {5 |; q  N' \2 dset j2 q- I  X9 J/ ~0 a) g/ N  X
( j + 1)
# [6 s9 x( Y* ^2 @
], }+ E: E6 P" D4 S. i/ p
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 ))
& e( p& w7 J& O. C7 ~$ s! u
- T1 l% d3 Z! _9 K

  v) p8 X: |; xlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))+ ~" i4 O4 V% a  a
;;
及时更新il的评价质量的评价) T! q: J7 l! {
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
) J( q3 O8 A9 G6 Oset l (l + 1)
& [) g1 `5 `6 D) o& J: f]: f* M+ p- h! R
end
, l! {. b, C' ^8 T' {9 X* A: T4 }1 G& v2 n
to update-credibility-list
5 e% v; K0 D9 S4 P6 H# Olet i 0
+ A3 h4 F% [9 P3 F, X  r# i! Mwhile[i < people]4 E* N: H# ?/ w- {$ _2 d
[
: h# v" u7 u$ x/ N1 Z; a6 Xlet j 0
1 ]9 n8 {/ z. _1 S( ?6 H2 M  _2 vlet note 0& O. f5 K; e& e5 h
let k 0
; Y# @4 J' G; v* ~( r/ A+ t;;
计作出过评价的邻居节点的数目" w9 @7 {) ?1 K- G# ?
while[j < people]
7 M! k! l  h! q* C7 _" g. T" L[( N7 H$ m; K2 t
if (item j( [credibility] of turtle (i + 1)) != -1)0 H: a9 Q$ f1 ^8 b; f% u3 ?$ `
;;
判断是否给本turtle的评价质量做出过评价的节点
/ Z' j6 X5 ?9 \- Y[set note (note + item j ([credibility]of turtle (i + 1)))
3 s" y7 p, Q& W4 r9 ^7 };;*(exp (-(people - 2)))/(people - 2))]

& U/ ~6 H; k1 L! y6 Oset k (k + 1)$ t5 @6 W( P  B' s, y6 o0 h
]2 {3 F( b3 q4 }6 r  s
set j (j + 1), a7 f1 u5 N% b# l) B. j
]6 j0 t5 H1 A' @
set note (note *(exp (- (1 / k)))/ k)
+ L5 I% P! p" Q% pset credibility-list (replace-item i credibility-list note)2 U/ K4 Q9 L2 ?! [6 t, W* h
set i (i + 1)
; c1 @  [4 r" _3 ]9 h7 y& Y]
* H( Z$ W, N* M, ]0 zend' V1 E$ ?! v# c% M3 O

1 E2 N. f" z/ X# o" G$ Pto update-global-reputation-list
+ F  p  h% h4 e8 ^. z6 blet j 0
5 d0 {3 E; x0 j5 h+ fwhile[j < people]
8 S; e" [7 O+ `$ p' z+ p/ j[
8 j1 f0 N2 Y6 G$ P# [let new 0% q# N9 ?  C  A
;;
暂存新的一个全局声誉
0 Q4 B; D* g* I  _8 jlet i 0. e( C. q1 K* V6 `
let sum-money 0  U* q8 F# O& J0 i- b7 x. I
let credibility-money 0+ s6 m1 j; {0 I" J7 }* O7 e1 w
while [i < people]
/ q, q3 Z2 a* V4 {9 B1 l0 {) \[
" e/ {$ x+ {4 [set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
1 v* h; r; v% k1 ]3 dset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
2 A. ?+ Z  V! S9 y2 Y3 Iset i (i + 1)0 N: a/ g% `2 I' s7 k2 c6 j
]7 K8 [# g! y5 |5 u) C8 f
let k 0
7 e1 b1 y% Z# O1 Blet new1 02 `1 }5 P6 a/ [
while [k < people]
/ w* w2 U) f/ \  @  |# P/ Z! z[  H. X% B3 N" v" {! n
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)1 B6 A+ `2 c  ]
set k (k + 1)7 o( f* \3 U, y1 s6 i' V! ~
]
! Q; T  W) Y) h' p  B' y, dset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
& ?4 s% g! P  Eset global-reputation-list (replace-item j global-reputation-list new): R' ~& Q! q7 X, n; C
set j (j + 1)
+ E  a7 r. v1 ?3 V]5 @- g. X% c  r: y: |
end
( E  q0 C; T( Q: p' _! c2 M/ V/ q
! Y/ @& }. Z2 l6 U- l- c
- }+ G; k2 i8 `3 D
" C2 B3 [; Y1 j0 a9 e( uto get-color
' g" _: d& t" y
' G8 F' ~' a; Z9 r; g" |8 t1 ~, a; |set color blue

' i, g0 X4 P/ L1 b6 @% w! N4 fend
8 R+ O* f9 }1 d
! m8 J/ h/ s( I1 v2 }& s, Bto poll-class1 d# K* v4 c- E$ ?- m  n0 _
end$ v( Z2 }+ u9 ~7 A0 H9 o" k8 ?
' b1 U# ~- c6 W* \2 R( \8 e3 N
to setup-plot1
+ |: x4 ^# c% v( N6 ?, X2 u. V, E, P/ O" a
set-current-plot "Trends-of-Local-reputation"
- T8 J: l& ]" P. I+ ]# M" ?
  ?) B, b3 k) X
set-plot-x-range 0 xmax
( Q! P; a( s7 G, e
1 k7 o! Z4 @' A6 @7 ~' c0 g1 W
set-plot-y-range 0.0 ymax

* E! T$ r  c! |+ Wend
9 S- ^2 ^  V' w
+ W( b$ b% X' W" x3 {+ \+ Ato setup-plot2! l: u; ^- v+ c
4 I. T3 m3 w. R5 ]0 [/ z# g8 `/ e
set-current-plot "Trends-of-global-reputation"
! j' ?& z0 \" z8 x. B9 p

. K, f4 f8 g5 m! [2 \) B: Pset-plot-x-range 0 xmax

7 \- [2 \# ^7 K3 ]/ j+ M) c
& m$ F1 m2 o* `+ ^1 Nset-plot-y-range 0.0 ymax

+ p! l. f6 P+ u0 H3 Z& lend
2 M& Q8 b! m5 T# x) S4 ]# |& M4 ?  G/ c$ j
to setup-plot3
7 n# ?4 ^7 j& V: b5 B- f! b) r% F& U8 L9 D4 u' K$ U: {
set-current-plot "Trends-of-credibility"

( ?. c& v% G( \- \, q, [6 l
, S, y: {0 u3 t$ ]- dset-plot-x-range 0 xmax

' K- P; U9 D2 Z, @( p0 m# z- c# Y$ _' v0 e
set-plot-y-range 0.0 ymax
0 i7 ?" m- P4 I1 r$ `
end
$ q. K! T! F5 x
% C! s% ~& N" N. wto do-plots
/ [5 x/ o2 m0 I% z- fset-current-plot "Trends-of-Local-reputation"; W* M5 t* S: N2 o" i- o
set-current-plot-pen "Honest service"9 T( y0 _7 T2 |6 W3 X/ R1 B9 ~7 r
end% v1 o' K3 W9 b" P( u, ?' Y

2 [, v+ F& @$ ^: s[ 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.5 }6 L9 K& j) x: L' j( C+ y6 A4 a
5 f7 D9 t. k  U* g0 v
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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