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: 17129|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:
0 r5 U) f/ l; g2 kto do-business # s& [  J7 p! F  n
rt random 360
0 o7 e! ~% _. D7 d8 u) d fd 1
, @$ u4 _/ v2 b8 {$ o- Q8 @ ifelse(other turtles-here != nobody)[
4 h* ?. A. \* ]8 X  K7 r; g) ^5 P   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% P1 L" }0 \9 b/ \   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
" }9 r4 F1 I: [  g   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer+ q( k2 S7 o! p6 x, u9 V
   set [trade-record-one-len] of self length [trade-record-one] of self  S; U0 e- F( X0 s/ c
   set trade-record-current( list (timer) (random money-upper-limit))
3 `: n( G) b: h: W: K6 ?# F  l) A1 Q  R' D& ^! C+ t+ E0 u1 z' F5 N
问题的提示如下:
$ R) Y1 r$ P4 X+ |4 G' H, p, W
9 F) x1 g4 }, Z0 M; {" {) ]+ P- Lerror while turtle 50 running OF in procedure DO-BUSINESS5 W6 d+ B0 w9 @
  called by procedure GO
* ]/ e* _' E6 U7 |/ w$ m9 `* vOF expected input to be a turtle agentset or turtle but got NOBODY instead.
$ _/ m: O+ `2 z9 v  ?+ l; |5 Q
(halted running of go)1 v, q' Z" F. I

, ~0 Y& A$ ?' C, [) m, T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~~
# ~4 p1 J; r* U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
( g3 J- Q8 ]/ H6 o  z5 \globals[( Q" K3 \3 B, [' _
xmax
3 _% l1 z5 L% r4 E! aymax5 [/ c7 X1 [9 K8 R6 _) ?4 y
global-reputation-list' @+ c# ~) j0 T/ X) e4 G: I

. H' T3 g' d3 L' n2 \  v5 [;;
每一个turtle的全局声誉都存在此LIST5 X. |3 f: w  Z7 u
credibility-list
+ y2 F- q9 Q6 D5 P;;
每一个turtle的评价可信度! a" [5 x7 N& i
honest-service
2 r3 L  l; E8 F$ p* O' \unhonest-service9 ^2 p2 O$ g5 ]! @9 Z; d
oscillation# t5 K, z! L: H4 h8 ^4 g
rand-dynamic
! s: j( c/ J. }5 N8 H! d]
' b. Q; c* [6 Q
1 g: N  d8 w! `* `9 u* [0 T4 Fturtles-own[
! N8 A/ W; z% wtrade-record-all
- {( m1 ?3 ], i3 q0 h;;a list of lists,
trade-record-one组成
; U) f; T9 d* `( P$ }trade-record-one+ u+ F6 C8 W4 g" C. w% N! Z
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录2 V+ C9 j2 x, ~: e

9 n. I7 [, y+ M1 [;;[
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]]- z4 c2 p3 Q4 T9 B) y
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]) w% {9 x  L2 m) ]& a$ P
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' _* F* z% k% W- j( m0 G
neighbor-total' M( a% x, f' i# w4 v
;;
记录该turtle的邻居节点的数目- Y+ M( f6 |7 w8 F9 g0 k9 d. L  ~7 u
trade-time0 ^* E- Q1 L& F, Q# W
;;
当前发生交易的turtle的交易时间
+ Q8 k* B' n* p  vappraise-give
. {; K5 `- Y- |4 M# A9 R;;
当前发生交易时给出的评价
9 p+ [) Y4 ?* C3 N$ o* Q2 F0 r- e# rappraise-receive' J( C/ s# e* e+ w7 X6 {: ~
;;
当前发生交易时收到的评价
" n! d% A) ~: Dappraise-time
$ P6 w1 C: w2 h; M;;
当前发生交易时的评价时间7 i7 p5 R" i1 p- W& q
local-reputation-now;;此次交易后相对于对方turtle的局部声誉6 i0 C, `+ B( b; I( K
trade-times-total
0 g* J) V; O8 t6 O;;
与当前turtle的交易总次数
& W, D" p$ \" V) ptrade-money-total
! T& C; U9 t; s2 b% k) K& j; N;;
与当前turtle的交易总金额  B. |. e5 q6 j
local-reputation' ~: E" c& |3 b& |
global-reputation% k7 q& b0 }6 O$ s
credibility
6 ^  Y6 }5 h! ~- n6 {  r;;
评价可信度,每次交易后都需要更新
" W% M  F+ w5 ?" g" ocredibility-all2 b9 [3 d0 u, D) W' s
;;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, D, m" }, [! l: e7 P" W8 F7 R
% i# d' t3 b6 t+ e: E  o7 X. S
;;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
* m0 D1 c. R" ccredibility-one  s+ ~# M3 d+ `- y9 Y
;;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
" w, k' S" X6 m7 r* Zglobal-proportion
1 ?$ f1 E5 r4 @2 zcustomer
( J9 W+ ~/ L9 w# Fcustomer-no4 _4 P% U) V0 v3 U" g5 h6 a7 T9 o
trust-ok# W5 [* P  n; r0 q
trade-record-one-len;;trade-record-one的长度- f. `, k& t  p+ q: ?& X
]% l$ \3 D( |0 a
" K* a  _4 X5 L& V) \
;;setup procedure
9 Z  u9 |  U( q( @8 r3 y7 m6 c, d2 [# F% g
to setup+ l2 S5 i* @( p
2 ]+ T# k/ M2 H6 X- ~
ca
& l5 c( ~! V$ G' Y! S- }
. w) u/ M, Y3 A* g% b2 y
initialize-settings

: j# k1 e% s/ h6 V2 T8 c" R8 Z5 y( |9 f0 W
crt people [setup-turtles]
, h' C- ]$ Z( D. X
2 K7 @3 I% X( L" U
reset-timer

2 y1 s# t  V. O. c' `, s
: {) }, B% W; q% f$ @poll-class

6 C4 p0 X: i" I9 u7 e( m) K1 W) B. t" f2 _( v" k, G$ Z
setup-plots
# D; I" P; \. s  S0 M' F+ J3 F
! W) K) C* S3 n% W5 C
do-plots
- U! Q8 }& H- e! [6 F
end3 ^8 F% D2 g. F) x0 p: G
2 F% z  X) u9 O1 {
to initialize-settings
( ?: ?( r& L; L4 q0 y" K$ g8 B5 v0 L" }# g8 V2 N
set global-reputation-list []

5 w6 E& Z5 d6 H- p; P- m. N: |3 m1 \" |
set credibility-list n-values people [0.5]

& E; x. G6 q$ l, h& w! V9 y
. z% A0 b) e/ H. W4 T% j2 Q6 ?) e$ aset honest-service 0

+ v. g% B- e. X5 e
- g: a5 i6 p! F% O, T+ Sset unhonest-service 0

) n" G5 Q% ^/ Q5 s# ?% s2 y4 z7 z+ I1 ?! a
set oscillation 0
3 J, \* [4 t( q, W, Q9 V, Q7 w
0 I1 l; s$ a" f& b( ~6 x) Z6 b, F
set rand-dynamic 0

: y% P# B' I( s5 u$ }end/ A2 o# c" d$ t0 M5 H' K% [3 }
% P4 m6 I, z# |3 i1 G
to setup-turtles
0 Y4 a3 H6 e5 Y7 s6 kset shape "person"- N) M# H2 ~* m) G, n7 k9 M# D
setxy random-xcor random-ycor
6 q; o: ~; }+ ?9 ^set trade-record-one []. |) o4 j, F( ?' p+ D1 Y

5 Q- j% o6 Y: X3 ~+ Vset trade-record-all n-values people [(list (? + 1) 0 0)]
: D4 V: l7 A/ X

/ E  x6 `" q% _* p7 Vset trade-record-current []
2 J) W7 z# B7 n4 Yset credibility-receive []- Y6 H$ b- a. o" n
set local-reputation 0.5+ _8 l) m5 Q' m5 T# @- _
set neighbor-total 06 K9 O" @( h; L5 [9 S4 W
set trade-times-total 0( T. ?8 ?/ K4 g& i
set trade-money-total 0
% y0 K: M7 O6 eset customer nobody0 p  G$ E& w. T" t5 [
set credibility-all n-values people [creat-credibility]
$ b8 B& R1 f/ R0 v: ]# ^( ^set credibility n-values people [-1]
6 v' n3 T  M. p* j3 ]3 e! Hget-color
; t$ h4 `: ?, t# v; y, _6 F$ P
6 I" o5 V7 f+ O
end& b" `: a9 y5 P# {7 [+ \- c1 T2 }' D

+ l& e4 @" g- k4 t' D/ _to-report creat-credibility# j' Q* P8 U4 A
report n-values people [0.5]
6 Y; ^6 D+ V: ]" b2 Mend
0 P& t# ^7 M2 i" J$ t, }* \- B& c/ F9 l0 m
to setup-plots
/ {5 H! u4 t4 \& m/ M+ X$ \# a$ Y% ^$ I6 {- x
set xmax 30
: c6 a6 F! C" n2 k  z
$ G2 P8 }/ U" E: a6 y7 S
set ymax 1.0
6 }5 C3 i6 K: e: `! K( T. W4 O3 x- T' {

; ^3 Q4 d: F( Q1 |- K$ \clear-all-plots
/ h% v1 C: v5 Z+ c- l: A1 v: G

: n- K( A, E& P% osetup-plot1
9 L/ K4 b) h$ N1 P9 T
; O4 {, z+ q9 Q( P$ G
setup-plot2
" `7 m. X; _% W
8 _- s: _; ]' k& T8 U7 H* l
setup-plot3

3 u! H' f& H  d* b; x6 tend
/ L5 h" N+ v, F6 R$ Y; c) s' Y+ ~; H
5 M5 Q. p# k0 k4 N  c+ _% @;;run time procedures
  [3 u# W1 q$ ]# `+ h1 {# P/ s7 e6 E1 ~& @' k$ v, k9 t5 T2 J  C- B
to go
6 i9 G) b7 n; [+ b
6 f- u5 Y* ]& r2 `4 |* F& ]" @ask turtles [do-business]
9 L0 w  `2 v: _2 \6 T8 h
end+ p+ U% u7 _+ _& s# X. w
* J; J& L, \* Q# y3 G, T9 Y% u
to do-business
! A/ S( P5 l! i& o

6 i- \8 J/ @4 s0 M% h" Z& I0 M& n; k2 g. U: ?/ f
rt random 360
- a/ {+ c: Z/ v5 k2 {0 y
' z! |& B3 g) O- u
fd 1

: p$ z- x- K1 ^4 k/ M* O7 H+ G8 f
0 Q. R  x6 v- }$ Y3 z# @ifelse(other turtles-here != nobody)[

0 W9 K* `& [4 z" a5 ?2 X
  F) i& u5 K6 `& f5 rset customer one-of other turtles-here

3 u2 b# [6 ~/ V9 N% E( p! [/ O6 ^& P! j! w
;; set [customer] of customer myself

) [% Q( L* Z9 K! M4 x2 Z; [
9 ^, Q3 \, t* @- O, Q) S+ S0 Mset [trade-record-one] of self item (([who] of customer) - 1)
2 q/ |/ k3 j: V[trade-record-all]of self3 ]' Y* J! X* R
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
! ]+ X' i$ }7 b3 r6 a. W

7 B0 a8 \$ U, v0 ^set [trade-record-one] of customer item (([who] of self) - 1), S& w7 |. p: m# F; O7 `
[trade-record-all]of customer
; _6 \9 {" G: m* M: t. R
$ p9 |7 Y% `7 d! @) X* D8 \
set [trade-record-one-len] of self length [trade-record-one] of self
- ?; F7 c( _7 j9 R, [9 r
7 [( t$ {9 t2 t. N2 M
set trade-record-current( list (timer) (random money-upper-limit))
6 X, t0 y& c( s" f7 f# D
. S7 Y# a( E+ e0 S2 j
ask self [do-trust]
) Z9 o4 _3 N% U% r;;
先求ij的信任度4 C1 x5 \. q6 O$ n9 {

& J9 W; t  ?" u+ c; v1 Eif ([trust-ok] of self)$ A6 V9 W7 ~. V8 x$ |
;;
根据ij的信任度来决定是否与j进行交易[  N8 o# J! K3 A# q6 j5 @! d. H1 _
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself& l! {4 j% [% S

7 \+ E# `" N1 e' n% {[
" v0 Y6 t# c! N6 P
: Y2 u5 b9 f( L2 u2 M
do-trade
* y0 z1 R+ H, @. Q
7 [5 {, [; o2 z/ s
update-credibility-ijl
* r4 V; d/ i0 W  U) B# b4 I
* I. S7 M7 {+ b% v, x
update-credibility-list
9 @# y( l) r  }, O6 c
8 P* R9 d9 |& a7 |9 z' v* S! a
, ^: ]  Q2 _, o8 F6 w2 g1 X! ?
update-global-reputation-list

* u; q0 [& G( o8 r
  m; l6 {! ]) d$ K% i4 Opoll-class

; T/ H2 B+ b1 q
3 W% @. P% q' S( V$ Jget-color

; K; K5 J/ j; k0 a, X# g& w
. J6 K6 A" }5 `! M]]# a: R; a: x  n6 q- O1 t/ Q

' D, j- D5 a- {; _! W9 [;;
如果所得的信任度满足条件,则进行交易1 A( p! c, g" X

( ?# X5 [; M$ T1 t, F$ i% ^[
2 ^# ^; `  y8 k- @* U: D' ?7 K
4 j& [: O4 \* d' E! _/ S
rt random 360

2 w5 T4 G+ {5 f
6 C. ~" _6 _( H. d6 g0 [fd 1
# K! s( E' O7 q3 u
5 a: M) V3 J$ b
]
* y/ ~% C% X) P

  K2 C& S: q8 c" zend

6 t( Z" Q; |) z' V+ q. _/ c3 J. Q" n3 g
to do-trust
, h$ U* F& K6 r4 Nset trust-ok False
, R$ i1 X7 Y, n! n% c6 I
# Y. Y+ Q$ Z; a1 J. O6 l$ n* \
  \6 z1 ^6 t0 L+ _& k: @2 O
let max-trade-times 05 O/ w+ Q& G3 Q2 d
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]# q: u; m3 G1 ^3 h9 O
let max-trade-money 0  L8 b6 o, O; Z, P5 \( s
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
( f1 z( P2 M" s$ 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))( u  I& s' b8 D0 `) o" c. ?
8 c8 l: o' p1 C, ~# _( P4 u

$ j4 C2 g9 U  Bget-global-proportion! N# v3 w* L% S  Z/ F
let trust-value' Z1 g' ]1 P9 F- n: ]4 C( n
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)

2 z8 v0 w5 j$ y" F8 {( aif(trust-value > trade-trust-value)
/ [* d, a& Y' d[set trust-ok true]
7 m' ?4 ~  g" s4 kend* @& `$ u" H) K  p0 R
9 f/ f5 x* y  j' a! r' d
to get-global-proportion; G3 w# @8 C! w" ]% t" Y
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
2 X  G% X# Q- D[set global-proportion 0]
# [4 |8 s5 S) ], u) }8 X) |[let i 0
2 N4 Q, e  y+ [* _0 tlet sum-money 0
" Q0 C8 }4 Z9 jwhile[ i < people]$ Q8 ~8 F0 J# z4 I) H
[; @+ s  f$ P  f4 `
if( length (item i4 D" K9 x% x9 o' Q& e
[trade-record-all] of customer) > 3 )

5 H! v# h5 n+ j! B4 P9 s+ [[
6 ^- ]: v7 N- f. Lset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
7 o0 {8 I/ z8 O" L9 d]2 `. \% w* u! A0 L, Q/ c. {
]+ v; q5 p) s: o, |( |
let j 0: T: _5 n# S! C0 T! q
let note 0
( ~. S& B, g  R3 w" nwhile[ j < people]+ |+ l6 _) R3 G8 }
[" a1 a$ t4 r6 e
if( length (item i
* g( e; B0 V) o, N6 B! \* a[trade-record-all] of customer) > 3 )
2 K/ b0 S8 {0 s- H& ^2 D, Y
[
, k' w9 h# \! F4 q2 [ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
: f; R1 @, Q/ }; f3 b' ^3 L[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]2 w( P5 f% ?4 c. c1 q+ r# E
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
# `, Y' y' N2 a- [4 t]# A" g4 N+ I  }9 @( T
]) i" i* W+ o: A& x3 B
set global-proportion note, X1 w3 {8 Q& P0 P* S  C
]
" @6 v# M9 a  w; I2 M' j8 B4 `( t5 dend
6 }/ L5 q- s6 {- I7 L; l; k5 `7 W* T6 d4 q" l' \
to do-trade
; c2 |. w% H( \4 T: H3 [( b;;
这个过程实际上是给双方作出评价的过程: t* L) s9 L, m$ _! U4 T
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价' R+ M$ K; w0 B, n$ h8 A
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价/ d! @% Z2 _. w2 a. a; |
set trade-record-current lput(timer) trade-record-current
# L9 P* I8 `2 A4 ?2 J' N1 D/ O" `;;
评价时间. L: S8 E; `2 g5 l
ask myself [. j3 C. {3 i2 d
update-local-reputation' e* |' |) T" o4 Z
set trade-record-current lput([local-reputation] of myself) trade-record-current
( d; K" X8 b5 \3 n, e]# {; I$ u) }( g
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself& j' u7 H# y8 w  R2 Y3 X$ y
;;
将此次交易的记录加入到trade-record-one
& e; N) H1 y& [. ]/ e# {set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)* N) f5 y* E% B6 p& _7 _' {! h: @
let note (item 2 trade-record-current )
8 y/ F1 F4 M+ ^) U' x' Sset trade-record-current
  Y" M: E# ]: b. G2 o% J(replace-item 2 trade-record-current (item 3 trade-record-current))

1 p: h3 v* q- m8 ^  hset trade-record-current4 I$ L* X8 Q' _! O4 P' [$ \
(replace-item 3 trade-record-current note)7 l+ c% Y0 B1 f' K

# O# h9 M7 L, P
0 ]/ r' v7 y4 _
ask customer [6 E8 [, x* m) h' k/ p7 y
update-local-reputation
) C# f2 F4 J* C+ L! S7 l  Qset trade-record-current2 D* d8 O& \+ o% T; G& r
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
% `' L8 x/ w; X, o$ }
]! s) J' Y+ Q9 \, R1 ?

0 S* B( _5 N/ J1 N! ~$ ^+ s
! F; B3 c: W4 M. f4 p2 ]2 O5 y
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
# o  D5 ]% F1 e
. i- ]5 Y4 i6 L  b; Z; `5 ~
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
2 \$ q  m8 e) t, }' [+ \;;
将此次交易的记录加入到customertrade-record-all8 Y9 z. D6 b% K: v  O, j/ q5 ?& h8 e
end* ]# P6 q/ q; m9 s
% A  x7 w, U2 ]' C' C
to update-local-reputation
0 y' R1 W- ]8 j* W/ ^# |" Dset [trade-record-one-len] of myself length [trade-record-one] of myself3 d8 x/ V( i+ g2 ?* H

) U, |& s# a$ m1 L; L+ N+ d" f; j  D8 K: V% j
;;if [trade-record-one-len] of myself > 3
# r* T* e2 C% j: |1 z( Y( t( ]8 G3 e( Z
update-neighbor-total
3 c0 z5 @) ~+ t6 y3 L;;
更新邻居节点的数目,在此进行7 s( v( _" M1 a" {
let i 32 y& [" ^% Z  Z1 \* Z  B) u) X
let sum-time 00 g! m& F8 L/ Y$ v1 y2 n* k0 K
while[i < [trade-record-one-len] of myself]
* k; F( r  t4 M& Y[. |. s( m5 b6 H$ _7 f2 U+ V/ E
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )2 l; Q6 h* B& A. E$ s& d% g$ u
set i' e& Z! o3 J% p4 R
( i + 1)

% f; _8 [# ?7 j9 O2 W% s0 u]
3 \2 T7 H4 x5 A( q, [3 Mlet j 3
+ t. O2 q* N; H- ?" P8 P) z0 O. T; Zlet sum-money 0
  a8 C7 C- T! H$ {9 uwhile[j < [trade-record-one-len] of myself]
* [3 D; f+ b5 J: T[
: F4 i3 d& D# C. `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)& V; p$ z% M& Y$ f) A9 t
set j
8 _: c3 `8 J* P2 X( j + 1)

" }9 k5 f# i6 U) o1 k" I4 c]! c2 N3 B- j4 ^
let k 3
. U( S, b6 z  ?% {let power 05 X( A. @6 [2 W  v
let local 0
6 n) B! W6 F5 w. p/ a4 ]* G: d# Xwhile [k <[trade-record-one-len] of myself]
/ F! U% Y; V, L' @. K; Z[* J  }! y' j# Z( w
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)
2 @  S) Y- F8 ~- }" g! ]" bset k (k + 1)! \6 A6 H  Y7 h7 f
]
9 T6 x) o/ f+ |" Z! W% tset [local-reputation] of myself (local)
" X8 n. u, K3 W; e) E% A6 @" Pend% S+ f) C- Y9 o! m) s' s
4 [4 @4 S3 u* x+ I$ B; z: O1 g
to update-neighbor-total
' {5 E7 a" v- b/ B" Z2 {5 {
7 T. E  C; M; d- i1 Sif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]) _) M% r2 _9 U
$ f: R* V* X+ o8 _& t

; u0 z1 B- t# d, j  h6 ^/ cend
7 c; t. n" ^9 R
. c5 u" A4 S+ Y* rto update-credibility-ijl 5 C7 y' Z( D% G& v5 P: P6 z- `8 M6 ?
/ @: f2 t6 p2 x& z# g  O
;;
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。
( ^+ n: t" f2 u9 plet l 02 s$ X3 c4 \& y" T( Z
while[ l < people ]1 b: o  p# t% N, R6 {( _% L: M
;;
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" ?" Q  c5 h1 A% s* ?5 b
[
7 k' V9 Q) z, C" E, @, ]. alet trade-record-one-j-l-len length item l ([trade-record-all] of customer)$ o# p9 {$ {( E! z& `
if (trade-record-one-j-l-len > 3)
* x2 o9 c4 n- ?[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-one7 S7 A- q% j3 T, W# [3 w
let i 3
( t7 I( a2 R9 Q6 e0 l2 [+ Clet sum-time 0+ p( s- L7 g7 y; ^! |' }
while[i < trade-record-one-len]
3 e6 }& q  W) s/ K[
7 a& J6 z6 }; \) G$ S% xset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
# Z0 m) \: C  X! M0 p9 S6 wset i
6 ^5 `+ ]& f- m5 A( i + 1)

0 v# T! q" D7 b]# l+ V7 _  ~3 d( n
let credibility-i-j-l 0( ^: g( u8 {$ P3 O* W
;;i
评价(jjl的评价)
: j9 l0 R0 L: C1 p( [; Zlet j 3
2 M' ]5 v2 O5 I6 @9 D% ?let k 4
, ]7 D% P4 k7 y) z1 O* p. _while[j < trade-record-one-len]0 T, q& D* \+ C, ]0 R1 ~8 l' b
[+ ?3 N2 F$ H; c0 m: x+ U
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 ~4 a0 G, v* M# x' B$ R
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 g7 _" Y& V8 ]" }( @set j
2 Y6 `9 @8 o/ ^! e( j + 1)
* d! u  G: P; B& N
]
" ]" d2 }' o# z$ z- I( [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 ))
  }- C$ a) J" @8 |  w3 J* d' {

% M5 Y' S2 w; O# m4 Ylet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))/ A1 p3 i( f+ i) s& a
;;
及时更新il的评价质量的评价  |. H' y% [- T0 c3 e
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]; n$ p. K0 |7 F! L4 ]4 R  ]4 q9 Y2 |; `4 T
set l (l + 1)5 u' [) g( ]7 [4 z- v
]
& w& d, |- M1 I8 uend
( E  _' V3 i9 m; B* R& n) ?( p, w8 _! \# n8 c' \, J4 J9 v8 L
to update-credibility-list( I8 e) Z3 q+ p5 Z
let i 0
1 s6 C2 W" r) S. G' i9 C; Kwhile[i < people]
+ c. q+ ~& e' }# X3 c" l[
, p( R( h8 C( S8 xlet j 0
4 }9 ^" g4 y4 H/ L" v0 I$ U" tlet note 0' _' A2 x1 Y4 Q( a5 q$ q
let k 0  O! z, K* D* K* Z% i
;;
计作出过评价的邻居节点的数目
- r. ?! @9 E& u  Swhile[j < people]& M0 L7 G( @9 k7 {( P9 }  e/ M4 C  ]
[
( F3 k3 j6 U) X+ z: z+ X& p4 L) T1 |if (item j( [credibility] of turtle (i + 1)) != -1)
3 {* y$ {: M% |6 P; `+ \" l3 N;;
判断是否给本turtle的评价质量做出过评价的节点0 k1 w3 D9 N0 m" q
[set note (note + item j ([credibility]of turtle (i + 1)))/ _: q: \) ~" n2 U' i
;;*(exp (-(people - 2)))/(people - 2))]
* Z& l& z. w# H, N! `3 J
set k (k + 1)4 J0 s  J: j$ @& T# y
]
3 N+ y# f( {4 d# T3 i9 jset j (j + 1)
6 f8 {7 T- P/ v" j]
& T2 b/ I9 v5 t& }' eset note (note *(exp (- (1 / k)))/ k)9 E( B) s5 x, q! r5 C
set credibility-list (replace-item i credibility-list note); @  C+ b( r, y6 X( J8 O4 b6 O& I3 y
set i (i + 1)
3 _/ f2 o* u+ e9 e/ o# a6 H5 N]' x1 F6 R& i2 @
end% G$ Z7 S2 s" b

+ J: F) Y5 B0 @5 Bto update-global-reputation-list
. R* ], d# \7 ]* j& c" z* tlet j 0! N/ Z2 B  I7 ]
while[j < people], j% ]6 \5 U& i& T
[" P+ p: d; B1 I# M) u' H5 b: x
let new 0
- P( _4 V) f0 S- r;;
暂存新的一个全局声誉) u3 ]$ S/ F9 O; z. _0 t2 u
let i 0" V6 y+ t( d/ Y/ d6 O! X
let sum-money 02 k% Z6 e. n& r3 \5 r4 B, x) ~
let credibility-money 0  `8 l0 K' h2 j6 N, e9 E
while [i < people]
& P5 v9 D& i- S9 s" w! q0 _: _& q* x" v3 ^[
: l; \2 w4 H( Xset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))2 ?: C6 a5 U3 M1 k, I1 p
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))* [6 Y3 a: k$ i! C; m/ \  J
set i (i + 1)
+ k9 @/ d$ x+ r7 r5 J]
- @9 z2 M8 r1 A7 d- ^& ^; ulet k 0
" P( b6 P1 `" O' e3 i$ ylet new1 0) x+ {: W& S2 _
while [k < people]8 R% y" F3 \# i4 s# X
[
& D5 H$ n8 l( G7 v1 b$ Gset 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)
" d3 r1 U; x+ Y/ G# Hset k (k + 1)* o7 h9 Q2 i' Q2 G3 w& u9 {' W5 [
]- B0 @1 w& J- [: y  l
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ) b6 {  e1 B& _2 u6 q
set global-reputation-list (replace-item j global-reputation-list new)
7 v/ o1 H5 S0 ]; t. d  e" E' G: sset j (j + 1)
  c9 Q1 W- ], U' b* g4 r3 `0 k]
) U$ Y0 \5 ^1 u; H7 Qend5 o6 }, _* t1 `2 O- V
) u. K9 k7 \# ]& y1 F  D# _
3 A! a: k7 ~4 l

3 k% j# J, Z! v1 N, Rto get-color
7 \/ j! C( z+ B: }
3 t  B0 S: A1 R* B/ Nset color blue
# @, g2 s: b5 M5 [! D$ l
end3 a# V! m9 s& b& L

" F# J+ _; U$ @  `! |0 S; E0 Eto poll-class% U' ?1 ?4 z0 W: ^1 w1 r
end
& R9 ?2 p1 n( c
  O' N& W8 e1 w$ P) a! j% Bto setup-plot1- }) t1 b& I% k( j

2 Q  q+ Z4 }' D( M7 w) K0 oset-current-plot "Trends-of-Local-reputation"
* i7 z, `- \! N- Q
! d' W# b4 H' B7 C% u0 X
set-plot-x-range 0 xmax
6 s0 C8 W3 v, Q7 d

" e) T- E- U, L1 K7 t' B) E# q% wset-plot-y-range 0.0 ymax
- ?& @8 j7 a  }9 ]" Y
end
" Q. ?( ?7 \9 U, W& L1 Z& |/ D) H- @8 V
to setup-plot2' h" X/ ^$ ^/ F0 u2 V+ Z- [8 ~6 W. v' x

2 E' F1 Q7 M$ h3 aset-current-plot "Trends-of-global-reputation"
- c. M1 [' j" ^  |5 Q
- U" X( a; X9 U( y7 j
set-plot-x-range 0 xmax

# r0 C' W8 R* b6 ^, J# _% |
4 L4 E/ M# ~3 O; oset-plot-y-range 0.0 ymax

: J6 F$ c' j' g% s- k* y  Gend
) b& D: J3 r" R; O1 l( d1 S8 i/ @4 K
to setup-plot3
; Z1 S7 v# Y1 d/ v
0 z' Z4 _) d& K. \set-current-plot "Trends-of-credibility"
' L* i, {+ H) f% I1 C6 }

+ x& v  s. k; Bset-plot-x-range 0 xmax
9 Z& x8 i! P& ]$ @3 O. B+ }5 w
% T) ?; L$ d$ F9 T4 B3 q
set-plot-y-range 0.0 ymax
6 W5 u7 h/ C' }
end
$ f) s3 i7 e6 r( w2 \
  k  H% V7 ~% eto do-plots4 Z* e/ g% T: Y( v8 M2 z4 F  m
set-current-plot "Trends-of-Local-reputation"
6 g# G8 e; e/ w  i  O, t/ \set-current-plot-pen "Honest service"$ ]+ Z: @: P5 E( l6 H
end2 \2 E4 P3 J" p) \
, a! v5 e3 X1 P  p) `, j' y& G) R
[ 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.3 K4 `/ F) f. z0 B1 ]# o! ^) \9 G0 @

; {9 _0 u% H8 D3 j5 E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, 2026-8-3 10:49 , Processed in 0.021159 second(s), 17 queries .

Powered by Discuz! X3.4 Licensed

© 2001-2017 Comsenz Inc.

快速回复 返回顶部 返回列表