设为首页收藏本站

最大的系统仿真与系统优化公益交流社区

 找回密码
 注册

QQ登录

只需一步,快速开始

查看: 11987|回复: 10

[交流] 关于turtle的使用问题

  [复制链接]
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:& ~8 R+ e% s. w; `! y0 K  k
to do-business
" [$ U; J) q( ^: T8 b rt random 360
4 J& i) W2 r! u: o1 e& B& {/ X fd 11 {# C) F( ]6 k
ifelse(other turtles-here != nobody)[" x# u$ U% ?+ K# r2 k8 v+ c
   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./ R' C  \/ J" a/ [
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
9 s* H) Z; r- X   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer; |5 O/ z. G5 [, i+ S
   set [trade-record-one-len] of self length [trade-record-one] of self! y0 E5 C& {4 [5 P5 X
   set trade-record-current( list (timer) (random money-upper-limit))
8 i- k* X+ y, E/ O/ B
# ]8 s% ^; m4 m  e. q6 D9 ]问题的提示如下:
4 d, z, E6 b0 b
+ s9 t" r- T) p8 ^$ Derror while turtle 50 running OF in procedure DO-BUSINESS
' Q3 @# {5 x: y& P9 j  called by procedure GO" V0 X* u% w5 c# s# G1 h9 G
OF expected input to be a turtle agentset or turtle but got NOBODY instead.1 W! d; G1 j; R' {' U
(halted running of go); V) [; j2 j1 }( L5 l  |
1 c+ H! u- h( P6 a/ \
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~! C* c0 r" j0 ~; I$ j
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.

本帖子中包含更多资源

您需要 登录 才可以下载或查看,没有帐号?注册

x

评分

参与人数 1仿真币 +30 +2 收起 理由
booblu + 30 + 2

查看全部评分

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! q3 O! `! D" |  j
globals[
, A/ X' C% ?8 X3 s* w; }% @xmax
# b2 M, w/ h# j% f# V; Fymax
! M2 y: \& ]. N* S/ N; j4 z, @global-reputation-list
& a- V& J; _1 B1 s7 ^6 ~1 L+ v: Z& v7 ^- M; U, J' t% t; ^7 R" f: g
;;
每一个turtle的全局声誉都存在此LIST( [; ?) G  }6 K; i3 N
credibility-list
. `/ O" W; y) x; ?6 [2 X;;
每一个turtle的评价可信度
2 V7 n, X( v- e! C) h! uhonest-service
, r5 y9 j: a3 \9 }3 Z$ b8 _unhonest-service- F3 B9 K0 c) V0 E7 }3 K/ W, s' {% F
oscillation, W+ Y6 o$ \' t% S, ?
rand-dynamic& @" T  ^7 @/ n9 O4 n' X
]
# V1 ^( Z7 n1 i9 k# i4 F6 f. a3 `, E8 h
turtles-own[
8 T8 l/ T% {  J! Q2 @. I8 V5 `: etrade-record-all
$ i1 n2 k, d* ]# [7 E! u+ W* O;;a list of lists,
trade-record-one组成6 c" z: r' s; M/ j
trade-record-one
- L: w8 X* N0 n# U;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录3 h6 x! G* L; G* y, A0 s/ z
( h. ?+ m7 O6 P$ W: k  B" W: e
;;[
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]]  u4 C5 J3 k  [1 _) Q
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]3 ?/ p% I0 ?+ ^! m
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
: ?) t( l& p0 N" Fneighbor-total
% q6 u) M( O  J: X5 D;;
记录该turtle的邻居节点的数目5 O) V6 X+ ?# `" N- @
trade-time
5 p7 W  U  R7 I: J: u;;
当前发生交易的turtle的交易时间
3 B( U* _4 Q( happraise-give* y" b4 ^+ L$ \, {7 E
;;
当前发生交易时给出的评价" m/ ~- _  k9 j( O# c* n. O
appraise-receive
) ^4 K4 H# t, r1 ^% l;;
当前发生交易时收到的评价
- C# F/ y( V+ R4 F% ~; {# cappraise-time
5 `/ |' ]2 ?  U! `* ?* z$ K2 q: Z  w/ [;;
当前发生交易时的评价时间
4 t( _2 A. I# V$ e9 ?local-reputation-now;;此次交易后相对于对方turtle的局部声誉
* p7 s7 I( _. h# @$ C! Ttrade-times-total9 V6 h8 K$ J& L
;;
与当前turtle的交易总次数
0 N- Q4 X9 E: strade-money-total
& D! Q( L' J6 P7 O' i9 K$ ^  W* };;
与当前turtle的交易总金额
4 B4 [) p! i( X: l/ }& B% H+ flocal-reputation; P( W( f9 {* D& e3 V% k5 ^' [; \! K  G
global-reputation
" W" |( x1 d* m" Ycredibility* o! U" r1 i! b
;;
评价可信度,每次交易后都需要更新% a/ L) u* ]" d
credibility-all
! X& C$ J. C% G% B;;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
6 ^8 g8 }% \  b5 c& Q- d) K3 B
- }# T3 C% c4 f/ A;;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
- z/ n: o1 G" q& K; Y5 t. ocredibility-one
+ a9 o5 c' D& T. B;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
; q% @7 l) ^( p# U  v6 |/ g7 d* Kglobal-proportion% L4 ^6 Z) N0 c$ y
customer$ z2 a  f3 m7 f* a
customer-no  ~9 T4 R) [+ l1 l4 O9 N) b& ~" n
trust-ok0 C2 S3 c9 y, g( F0 c- S
trade-record-one-len;;trade-record-one的长度7 o9 u2 u; D1 X( H3 e8 n3 T$ v
]4 k. E# G9 Z5 \! w: {
/ L( g( E0 }( v9 ]  q" T
;;setup procedure
! Q6 M# j8 `0 K" J0 I, o: I, s# Y8 @. B% r
to setup6 w" h! R; S! R6 I4 a- g
* u* K8 H6 s9 r$ d5 X
ca
: C& @3 e5 o; p8 y$ g  x; q1 {

1 {9 H0 |5 u/ l( w: ginitialize-settings

' y# O0 N: h( `7 y8 }. S2 A! |# |( K
! O' C% Q  L( I$ {9 x# `- Mcrt people [setup-turtles]

4 }8 n' _, x4 ?1 N5 c! d: C7 A, k" @# H$ X' B& D( E/ M! T7 _0 Z  t
reset-timer

& q) w) ^; `7 K6 P; L1 K
( k% E4 m1 ]* N0 @1 L5 tpoll-class

$ O/ M4 t1 }/ K% ]6 s6 {
- w4 T9 S2 t7 s" }) x( o. z2 c  Fsetup-plots
6 P- O# l/ u3 E8 d

( t; M# C8 s7 Z' c6 Edo-plots
/ @( d# g& M) h2 u
end
: O# |/ d" R' o; F
& y+ W& f2 [& l0 Q0 s, X+ Mto initialize-settings
% |$ x5 I1 }# L
' X& T: }4 v2 _* N# rset global-reputation-list []

% j$ N( A% C8 E/ c' A
" U( A1 b0 K# k1 R. i) m# ]set credibility-list n-values people [0.5]
2 S' _3 f- ~; c8 L
8 I; y/ I" e) |
set honest-service 0
8 o  G3 L# y4 w$ r

$ X* [. _8 F: k! u* ?- [- \set unhonest-service 0
: c; T/ [* b  v# p/ p0 A/ m
8 c* D' [9 w2 |: l+ P4 U- ^
set oscillation 0

; o) z) ~5 M- S0 I% r. G
5 A) w3 w7 x1 w# B" L& E2 w5 j% ^set rand-dynamic 0
& g% T' y" F% p3 T! m3 U
end- o8 w2 ~. n0 T! b! S
3 Q9 O( M) S  I: U  c% T0 G
to setup-turtles
6 o2 J- A/ ~; m8 Tset shape "person"$ b, `* H- ?, D
setxy random-xcor random-ycor
4 U5 _/ L, G# _6 V# M, f. Wset trade-record-one []
8 \3 V4 w4 K+ W8 S7 X0 p% m( B

# e% K# }7 y& ^/ U' N- Oset trade-record-all n-values people [(list (? + 1) 0 0)]
6 A8 ~0 I) @' y- T; r6 e
- V! \& Y" c+ k; i0 f
set trade-record-current []; J5 ^* b+ H1 S; ~- G
set credibility-receive []
7 Z! N2 B& W1 I  Y; cset local-reputation 0.5% R8 O& C$ K- s8 ^- G# h" h
set neighbor-total 0! j3 c# O& g3 W2 G! E
set trade-times-total 0
; W, X8 \4 i+ P. O& b- q* hset trade-money-total 0
6 b" k( \! I1 Y& k1 k% x  o4 Oset customer nobody
( q1 z8 Z* I; \/ R& K. i3 W" rset credibility-all n-values people [creat-credibility]) E( U8 g/ P) j4 e' k
set credibility n-values people [-1]
3 h  s9 D1 u/ U7 l9 X6 Zget-color
2 E% d0 x4 t, X

1 T2 [" n! f+ b( s' {/ T  Zend1 i% D2 E. c4 \4 J! f
! E. b  E9 g2 q: x& z3 L9 v) A7 |5 ?$ y
to-report creat-credibility
& a3 f8 t' n( G/ `report n-values people [0.5]
4 U" _/ @6 z) ?* o) P/ \! V. Dend
$ O. l' e) u: x/ D7 ?9 ^& U8 J; G; {4 e" p% M+ `9 j
to setup-plots7 M8 f- G6 k/ i

0 S( @6 E& |6 `: F/ X# i+ }! s* F6 Z3 Nset xmax 30

8 _: K5 m/ a: N$ x' Z6 ^) P8 P, I
set ymax 1.0
. O+ d! p7 w' R

& P2 E' O5 D- w% tclear-all-plots
6 y& i6 ?9 f8 Z  s. m
, f' k& s. l/ Z4 V6 `$ j
setup-plot1
. i$ m( b5 r# F) C) T

* o% O/ c9 k. i# m) V* K6 wsetup-plot2

& s0 I: D; a& G/ W5 u0 t0 k( M* H: h) W9 h( L. T6 G; v% k  n
setup-plot3

5 Z7 o6 q7 {' g5 {end8 l: A# P2 G* q. ~

0 L9 u9 l; E; T$ L9 w" H2 e;;run time procedures6 i) B3 T7 k& z0 _4 I# Y
2 ?  \6 a% h5 W- Z/ f2 |2 X& ~: D
to go8 c2 B- Y5 z" n1 t) W
6 l: i  F/ ~' I0 W+ I$ g+ X
ask turtles [do-business]

/ D: ]6 P# x6 S# d6 Wend5 s# ~* ]# g' @0 e! a. v0 R5 g
6 A! m  i& a  O; e+ v$ D, v; u
to do-business
5 Z9 r( }: l1 m8 N: O
+ }) g6 [  `0 M- O2 X% w$ ~: D

9 f& B( }: I0 V. u) I. w/ K* N) Lrt random 360
6 i1 _/ \5 i2 s2 W% _1 E+ a
6 L! N: X# i' L& ^4 z/ s
fd 1
7 M# M6 M1 Q7 ?- i2 Q; @' @3 D

3 [4 E; y8 z: Y; z( s: Eifelse(other turtles-here != nobody)[
$ ?0 @& l7 Q$ j$ C

( h5 l: U4 ^& w" O* N" G- g# uset customer one-of other turtles-here

' Q" V3 U- c7 G( ]1 {4 r, W+ b/ K& S- C- P' X0 F0 x) p6 R$ y
;; set [customer] of customer myself

6 V% C) C; P- i( |  `) t2 O
: V  S5 C. H! Q8 Iset [trade-record-one] of self item (([who] of customer) - 1), n( C. ^4 i) w. b0 M% D" d  B
[trade-record-all]of self; S8 @/ L' t# e* q
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
+ K6 b/ a% t# P  V7 x* f

, c" }9 `. e* J# x9 Y2 M" M$ o. `" lset [trade-record-one] of customer item (([who] of self) - 1)
% c3 k. g+ Q" w8 w' t. n. m& Y[trade-record-all]of customer
( Y" \6 V* ~$ C
" F( Q# t- F; A% y
set [trade-record-one-len] of self length [trade-record-one] of self
5 O. c+ ~# S. s  R  Z
8 B4 _  Z. q; K- U+ J! d/ Q
set trade-record-current( list (timer) (random money-upper-limit))

/ _, J! d8 `  z- D7 X7 q! Z& X9 I# @. w4 }+ a
ask self [do-trust]; Q* t, \& \* e0 C; x2 ~
;;
先求ij的信任度
8 ^0 b# U, v7 n8 W0 d: X0 Q+ c# E4 }5 J4 P, H$ F1 r* s
if ([trust-ok] of self)' d% F3 M& d: X9 d2 ]0 Q: {' f3 k9 Y
;;
根据ij的信任度来决定是否与j进行交易[/ b  M3 u* Q) V
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
* Z/ W, z4 E& A
" M# D" d* _9 l# O[
& `3 R, T/ a# _- b- y  v2 C: g
: ]# N, x( V: X
do-trade
9 |; `1 P. m0 w3 E; ?% L

) _9 z) C' D4 {# l- Pupdate-credibility-ijl
+ S6 R1 K& ~2 P( U1 P  Q
6 @2 `  k6 V' v% g' O
update-credibility-list4 A4 h# j1 u* T4 J* O
8 n+ ?7 r& r2 Q5 w

# p8 [1 h3 r8 r7 _3 R7 Lupdate-global-reputation-list
9 w# o0 `2 r/ Q8 n. t/ z
4 }8 v( |; I5 `" R/ e% u( U2 F
poll-class

. F% L% [5 j. c  T! q% o
& K& x) c- O" q7 p. X6 ]get-color

% f) ^- s+ q+ s* ^; w9 g' m% L  s+ q
]]
2 X4 L* S4 `4 d1 R: V
* V- J% j6 c* e6 b: B5 z$ B( l2 H;;
如果所得的信任度满足条件,则进行交易
; U) [: j9 t" a  E& E" I$ f
+ W2 w0 }1 e4 G9 M: r" p1 e[

3 O& p+ q% y* ]7 r
/ K" Q1 r6 k4 hrt random 360

* q( v; [9 S6 G  b  {- J+ s) h( j, J0 U9 g; v/ ]- P+ n0 m$ F; r
fd 1
* `* V8 W$ K* h

8 s! g$ J8 ^1 \  ~3 x: i; e]
* p" I: w7 q- V+ q, y7 n7 Q
8 `5 W% i- F/ r* ^. o, @
end
6 |% Q( w% H- }& v9 [

3 y! _2 C8 V: u7 rto do-trust - g2 q0 X7 H4 q& l0 M: w8 a
set trust-ok False7 ~3 n7 c( E9 g( Z& q/ m1 P

" {: ]9 }4 D! z5 W% ~, X* Y  r0 ^
7 r. a4 `( n9 f2 R
let max-trade-times 0
: f9 a4 J# ~" j/ j8 c2 gforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
, K& @$ U& f% F/ E9 _let max-trade-money 0
4 Z0 Y; o7 S" b1 u7 \. yforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]' I. q% P* U9 L' Q( Y( j
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))# ]6 f1 e+ P5 J$ L2 b( H" p
* q' T' `% ^7 m4 d- Q0 T# z
. ]9 {/ l  K" S8 t' S  X( v2 v
get-global-proportion/ j. ]! l; g; a8 f# g1 b  s# X
let trust-value* a# {( @# g) b8 m- l
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)
: {4 F5 E. v4 U1 a6 B) m0 p
if(trust-value > trade-trust-value)
7 W3 m+ D9 K+ Y( q* T9 S[set trust-ok true]; _/ S9 Z; G/ {2 ^5 K" C- O% {
end+ p4 I- u3 k' x) s0 s) O
( _- C0 c9 }9 r3 m
to get-global-proportion; A% L- T3 V, _! }" d+ G
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3). p3 |2 z# U$ c, ^5 F
[set global-proportion 0]3 r/ x: `1 l& j- K
[let i 0
% Z$ H0 P% T5 v- F0 }7 k, alet sum-money 0
- j/ U0 W: v1 swhile[ i < people]; u5 r' s. }- Q; j; E4 t* I# [
[
, f; \, n% T4 z* U% e5 s+ _if( length (item i. Z* l6 U# ?* a; F4 W% t" [9 X- Z# ?
[trade-record-all] of customer) > 3 )
: o* G+ K6 h0 [# j- ~" S; x
[
5 v$ z  P4 U7 `/ N. l( [3 ]0 a; wset sum-money (sum-money + item 2(item i [trade-record-all] of myself))7 s: ~# z" D+ v* p4 m& K' @
]
! Y: h  T& ~/ b5 ^7 {# A]. I3 ]7 Q& q; w' n" q3 o0 h! P
let j 0
* }1 v0 A7 z2 o# H/ @, mlet note 0
1 f0 ~3 q4 {1 |. I: Bwhile[ j < people]
6 g& g+ ~' v# y4 K9 a- k1 w# N: f[$ s0 ]: B2 a8 Y0 s
if( length (item i
0 A- ]: W5 c7 f( n; @& c$ n% B/ f( g/ V[trade-record-all] of customer) > 3 )
$ G/ J% [( a6 N' U9 P* i
[
& c3 Q/ @$ r  z( e% ~7 yifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)+ S: g9 Z- I' E3 W
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
( C( i' L" H, W8 b; J[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
  {- t" U. X0 n+ d1 P]9 G# ^! Q( C: S9 o3 z
]
. x# V, C5 w$ e; w; X, I0 uset global-proportion note
. H$ k) d" R/ |]
# ]! l/ k/ J; q9 k7 J( e  i2 N/ Kend: t3 T4 @0 ]7 L5 v. s' u) J
2 {0 v1 ]# x8 x3 v: {
to do-trade# v' t& f: @, G+ ^3 B  C6 E
;;
这个过程实际上是给双方作出评价的过程
' r7 A8 |; c. x( o/ Nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价  Y* u7 s6 ~! N5 X$ T8 {. a
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
  b' ?* P3 b; f% B$ hset trade-record-current lput(timer) trade-record-current( y* U- Q9 z) M3 ~. e
;;
评价时间
' [# E: j( f- b, h5 }# k8 U3 fask myself [
7 q! r/ T1 C+ f! m& ^/ G2 g' iupdate-local-reputation) n3 h/ T  E' `7 N% {) Q
set trade-record-current lput([local-reputation] of myself) trade-record-current+ O- P/ r/ J! n% V* L9 `) j7 e
]
/ a& e$ i' y7 Kset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
+ f/ c  D% @% B  p;;
将此次交易的记录加入到trade-record-one
/ Z3 i% ^  ~' u( W" k3 F, }set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)9 x" v  H6 N) c0 i5 |7 V  T
let note (item 2 trade-record-current )% A! F' K1 \; b- }1 \$ P
set trade-record-current( N( r% D* g: G
(replace-item 2 trade-record-current (item 3 trade-record-current))
$ G$ C0 q  a- i( r3 ]
set trade-record-current! n; @% u9 `/ E( N7 p: b7 a% F8 e
(replace-item 3 trade-record-current note)
" @5 k& n: p) w7 G2 E& `5 e2 W1 n. ?* g1 U

+ e) u* o4 n% g; b( a, t7 Cask customer [
5 O- S: i7 i8 {update-local-reputation
# p9 m. P! x* g7 Tset trade-record-current, i# }- m* `4 n  z+ P; N! D
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
% o2 m3 C$ z# c- x+ y  a
]
$ w+ o+ U# i; L) s: g
% N( Z, y& l) M9 z# ]8 O' E
0 H( F  Y& Q% `4 Y
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, h3 R9 w) {& o# r, p

/ X) g4 S6 ]" _) [" P% Kset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))  m; t  y7 y" l
;;
将此次交易的记录加入到customertrade-record-all
" U9 d% w. R; [1 b8 V5 Iend
$ H. R8 [9 D5 H  t2 @+ t3 Q6 e) F: E, b" H( M3 k% `. ?
to update-local-reputation
4 m* [* l* J  g2 xset [trade-record-one-len] of myself length [trade-record-one] of myself; w9 x2 l+ B2 y

8 ?" v+ ]. q5 k1 Y, t% K
7 h& l! Q. i1 y0 N4 l9 h' r;;if [trade-record-one-len] of myself > 3
3 K1 F: r& W5 N* z. W
update-neighbor-total' \# A1 n- o/ k8 i& s, I
;;
更新邻居节点的数目,在此进行
3 e& h) s6 {/ B( i8 glet i 3
: y0 ?" K1 O0 Alet sum-time 09 ^6 G& `; L& @4 {
while[i < [trade-record-one-len] of myself]
1 N/ L  j9 o" ]" }2 |[3 N* q$ X/ X+ r% G& f( N& v
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )0 j. V& n/ }) W. t2 x
set i5 k+ C9 n$ m' Q" W
( i + 1)
$ v) l' F( [" _: @3 o' ]. M
]* W1 b9 ]& `6 o: H
let j 3
- t3 ?/ o4 m! G" `let sum-money 0) x0 @4 \7 b+ Z7 L+ \! U
while[j < [trade-record-one-len] of myself]
# r5 {( ^  X: C[
( v" S& C$ u  o) c! wset 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 H( ~1 S; }7 [set j
7 e( C; `) Q4 E9 J: ^1 }$ N7 g  x( j + 1)
* M  L/ O! q9 b: J" O4 ^
]4 b6 n, c; V- h8 C0 P
let k 3
) s/ Z' G& D6 e! Klet power 0
- A3 S1 ?- S6 K$ ^let local 0+ l4 B- P; i. o& A2 X5 g
while [k <[trade-record-one-len] of myself]
+ ]9 d" A: Y' d! j! P[% x6 }* B' x. z
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)
) e$ ^8 R0 R1 `; v; uset k (k + 1)' A* Y, R4 D" I$ y' _2 v5 w  e  J
], ]6 L5 ]' q2 G; c9 Q
set [local-reputation] of myself (local)
7 k" ?6 P9 V/ Iend
4 R3 l# b% r( A: \- P3 c- |% b  B! X' G, Q, ]0 l' r
to update-neighbor-total
9 s& U! m% V% A. }6 D, \6 V9 s/ Y. }* C0 S" f
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
1 n" D/ N" L6 ]1 h- T
* J8 J6 x2 ?1 l. O7 S

9 s$ Q9 ]; `6 U+ l( {end
/ H0 C$ R  M) }( ]. g
  z; L2 D1 O- h2 I& G' R( q1 Lto update-credibility-ijl
. G5 h+ n* `" y2 |2 |8 P0 B8 k; o' ^* L' C: Z
;;
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。( M+ k' ~, ?" G3 j. P# A
let l 07 y9 T- u+ J. a
while[ l < people ]# Z: M/ ^3 `. ]! l
;;
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
# R1 b9 u1 f6 i+ ?) T; U[
3 z& l. y: f; slet trade-record-one-j-l-len length item l ([trade-record-all] of customer)7 u8 C- R8 N+ P4 C( E; O
if (trade-record-one-j-l-len > 3)+ r$ o$ G2 K' Z- p8 F8 m' N  X/ |
[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
, e- W5 s: A, rlet i 3+ C1 Q+ T& v9 Z* I! g6 O( Z
let sum-time 0
+ G7 u# G& F$ l( I; gwhile[i < trade-record-one-len]
8 |' e0 J$ q  `2 J[4 |: T0 F! W' r8 f
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )5 _* l4 m. u5 |) X, O0 n
set i
- K! d9 z9 W1 L+ `( i + 1)
3 v7 V  o* [- A# P9 o
], ]& a9 R; B& b( l1 J
let credibility-i-j-l 01 V" B7 n( }$ ?3 W( J
;;i
评价(jjl的评价)2 E0 b" R# `+ w6 q
let j 3
$ U8 Z1 y0 ]4 N# b1 wlet k 4
, J9 X$ R; v- o1 ?; Awhile[j < trade-record-one-len]0 p& p! I+ w3 M) t- L
[4 `& y" z# l0 v* O+ n( |7 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- B- V9 m# j! Z. N6 J' U  m
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)$ O+ O# y, B8 O7 H, @' \; U  G# ^
set j
+ W$ s! `& n; _) S0 _% y! m* @- J5 b( j + 1)
, m# x8 [+ P% o3 P9 K
]
- @: d8 D/ z' x' a6 g0 nset [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 ))# S0 ]7 a; v8 m. i

1 K" ~8 ?1 |4 U3 u" T( t  p
6 a: |4 M. }: b; p
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
& J; V% W( @9 {( w6 C: @  ~% A;;
及时更新il的评价质量的评价
; r0 R( p2 G4 Z! L& V! Lset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
- o& i+ ?5 I) ?; C4 ~) ?3 ]3 Pset l (l + 1)% L, j# c: {+ R0 [
]+ [5 F) ~4 j( j2 ], c8 t, X
end- j9 d  {, h8 |" s0 Q/ D: a7 C

" v  o+ f3 w" `0 @; k; ~to update-credibility-list9 n: ?, ?; `9 y$ j
let i 0
' _) i& W5 c; j4 V( _9 C' c- Iwhile[i < people]
: @" Y. P6 J1 ~& M9 p[
* g) Y8 p1 g3 llet j 0! M' E) K; O; P3 D6 R
let note 0
) |$ e% o/ T3 ^let k 0) ]. ]- E4 f& O8 p6 y+ Z# W. z; K9 m
;;
计作出过评价的邻居节点的数目; @* B, l4 J1 E
while[j < people]
9 n  {1 D: v7 l5 H3 e6 h% j; g[
% g' ~. M$ C4 k* _. z3 W6 v/ `if (item j( [credibility] of turtle (i + 1)) != -1). t0 E4 g" T+ T0 [6 u! F4 L
;;
判断是否给本turtle的评价质量做出过评价的节点
% L6 B! t$ a7 \[set note (note + item j ([credibility]of turtle (i + 1)))- S/ C- J/ \; K, F- H8 e* k9 @
;;*(exp (-(people - 2)))/(people - 2))]
' K( M% Z9 r% v2 J: X) l
set k (k + 1)
3 A# Z) q  ~6 b" V+ }- l]  \$ m: m! Q: l
set j (j + 1)
7 L# m6 S  X, K- S5 r: j  v" N]
) F8 v9 T1 H) `  e. h2 dset note (note *(exp (- (1 / k)))/ k)" t! J8 a6 O5 K* t
set credibility-list (replace-item i credibility-list note)
: t7 N5 v% R, D" @( d9 eset i (i + 1)3 |; H. w' m3 M: r( V+ z
]
7 q; e9 j: f* ?0 |! Rend
6 Y) G1 d' t% |- ~) j0 C6 Z
3 T+ y$ i3 R* xto update-global-reputation-list$ K* G( Q9 ]# M2 {
let j 0
" K# v! R; y) N) ?( a% Y- Iwhile[j < people]
( u, h4 \7 h. \7 ~: C: v[5 R! S# E! {! e# n; X) x
let new 0
# c7 n- B8 I) j% j0 W0 I;;
暂存新的一个全局声誉
+ O4 i) W& w+ r8 flet i 0( ?) F  R7 M, z# u( b( s- ^
let sum-money 0/ B1 K& h3 l, ^3 i$ x+ I
let credibility-money 0
/ a0 k6 Q) g% c% Y6 kwhile [i < people]
" t8 ?: |& o( f. q[  U) l; ^) P6 a4 V8 M( f: H
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
" w3 g6 D' w) l; r/ {set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
; o" D3 H( y2 H8 N* k: Iset i (i + 1), t- W0 H" ?% k# t1 H* O/ z
]/ `  E! t) \& A8 F( v" D
let k 0
8 A' r4 L6 }+ U( ~let new1 0' V4 \% u8 p& y
while [k < people]
' A! ?+ D/ n* e# `4 x[
6 O' M4 f9 Q( ~/ T- }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)/ @: O* k6 l' l* H: S1 n1 U. H
set k (k + 1)# y3 e' M: i- ?$ a
]
( @3 d) `5 ~  }7 A0 e: H% Qset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
, }- D3 X. n6 C5 `* R* ?8 T6 t3 Xset global-reputation-list (replace-item j global-reputation-list new)
! I; ^& Y$ z4 |set j (j + 1)
! k* v  r- I0 {5 L]
  y" L3 ?9 V6 }/ Pend4 n5 D  P( @3 r9 s& J
3 j! S1 j4 L! [  }
% k+ b6 J/ |0 K) b: a) ?3 P
. P$ L+ A' D+ p" e: T
to get-color
% s' ]0 S, R4 d4 l. o6 S! X' s- @2 Q0 N8 ^, b' q' u
set color blue

: e/ e5 M5 Q; R5 Z" f3 `/ iend4 T) ]: S# M# y; ^! _: v$ X3 ~
- b' N* N% @- l: F6 U4 j) `  P
to poll-class
8 U" b) X6 G, E! s4 Send
1 G* s. }, Y7 [0 B" d1 o. B, d" o9 \; o! P7 {' e
to setup-plot1
, p) m" e% r( U3 o3 R+ [7 S* r
' e7 R& t  g3 c( i/ K& Pset-current-plot "Trends-of-Local-reputation"
1 x7 v: m: }2 Y/ r
( v  u" V4 r# F' ]: m
set-plot-x-range 0 xmax
7 J' r: R* V, B- X) j+ \
1 U, {" M) ]) C6 J: [
set-plot-y-range 0.0 ymax
. |3 p9 `- D6 i7 H7 s5 x6 v
end
. g$ D" F$ d8 Q- H( ^* N: H0 D4 @9 ~+ P- r3 Z# `
to setup-plot2
, t0 z9 Y# X& s1 R; r$ n- w+ x$ n3 |& @" b; @
set-current-plot "Trends-of-global-reputation"

/ ~; c! M1 |1 v8 z( f8 Z. `
( R/ ?+ ^1 A- \4 y7 Q* i3 u, D0 @8 {set-plot-x-range 0 xmax

9 v: ~' g; _3 n( k
5 w' S8 v0 B7 K# X# _set-plot-y-range 0.0 ymax
# [+ q& W8 B/ E2 s5 X" I: U& h
end
" \" ~$ ]) E& Z# i9 U* v+ R0 H3 S8 |9 P3 _3 b
to setup-plot3
* X' _9 D" h& ~8 A2 [1 X9 U
. X* o/ p) k7 R1 z/ |8 ?& R1 ?3 D. jset-current-plot "Trends-of-credibility"
9 m3 P4 }6 b, H
& h% Y% k; z; m, h: {
set-plot-x-range 0 xmax

& K) g/ t, G9 c  N* s4 i' y8 f* R, V* k
set-plot-y-range 0.0 ymax
: y. U+ w$ Z& e: F8 J) h; _8 U* A
end
% x3 X2 @: D8 n, ]; f$ l( S) I0 `+ A5 ^; j) Y- H9 l
to do-plots$ {, C. i3 a0 x
set-current-plot "Trends-of-Local-reputation": e8 H4 d6 D4 Y7 N' @% o
set-current-plot-pen "Honest service"
" W6 Y+ Z1 Y/ W; s! [end' [0 P5 _) s% t9 @. o$ I

) Z- w2 g. X/ S- i- T  T, x! S" q[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

本帖子中包含更多资源

您需要 登录 才可以下载或查看,没有帐号?注册

x
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.
% C& D" X! H' C2 A" C4 r4 q. P. a0 B2 @
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?
您需要登录后才可以回帖 登录 | 注册

本版积分规则

QQ|Archiver|手机版|SimulWay 道于仿真   

GMT+8, 2026-2-9 04:06 , Processed in 0.022234 second(s), 18 queries .

Powered by Discuz! X3.4 Licensed

© 2001-2017 Comsenz Inc.

快速回复 返回顶部 返回列表