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: 14834|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 h; J4 _2 Z1 E* N  Qto do-business ( R; w- R, a, }3 J% F+ d
rt random 360( x$ U2 M6 A# ^# n
fd 1: [6 I: V) t( C) w; I
ifelse(other turtles-here != nobody)[$ }' L3 k' p* o0 U0 s
   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.$ T' P8 Y$ S: O1 G, z
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    * F3 ]1 W% e! N' w% A0 j; W
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
' z3 N1 v- ?6 r   set [trade-record-one-len] of self length [trade-record-one] of self
, D, z# A0 s3 ?, _$ _- ]   set trade-record-current( list (timer) (random money-upper-limit))
9 X0 H; k5 i) \1 V$ L
  b6 M7 M+ M& x3 I问题的提示如下:
+ [: b7 t3 c+ l" F' r( v0 S9 C/ {) a0 ^3 |3 `
error while turtle 50 running OF in procedure DO-BUSINESS
; r- K' Z6 x$ |0 |; c8 S/ f  called by procedure GO
  G/ `" [8 t) d4 J; ]OF expected input to be a turtle agentset or turtle but got NOBODY instead.
0 a7 t" A+ z( y& w5 W7 Z5 ^
(halted running of go)9 y  R, ?: E; r: s" b

4 g7 ?5 N7 X7 i8 p: s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~~
! W5 t% U  k0 n9 c% B' f; }$ r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
& ~2 m& w7 c* s3 O7 kglobals[  C+ Z+ ]' J  _& h9 ^
xmax
% ?: I" n' b( Tymax
4 O5 e$ j( f' y! Z: k0 _9 oglobal-reputation-list
- t- r+ A/ v4 T7 h4 J% D- @1 [1 s3 X7 h* f1 {0 g5 j0 o. m; t
;;
每一个turtle的全局声誉都存在此LIST
1 E; s" v6 }5 ?8 [* v% Qcredibility-list
; u: N0 Y# Z' H2 R4 O8 a;;
每一个turtle的评价可信度$ Q- R7 _6 f7 z/ Q( k/ w: j! y
honest-service
3 }$ G+ R$ g* E' w; ?+ `$ ?unhonest-service
' [, v% z; |. S8 joscillation* ^! K' ~# L/ l6 w* g: o3 v
rand-dynamic
7 C& z9 }9 C# ^]
$ c) S' e7 f7 U# p6 a1 _* r& v' W, U+ e# Y) o/ X3 o' j. V
turtles-own[4 z) S# M: B* [! J. G( `
trade-record-all
4 r9 l  C9 @8 F6 L; g2 E;;a list of lists,
trade-record-one组成& _8 A- n! |- f. v0 F: c; K  y
trade-record-one
7 q  J: {- q' _7 ^;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录1 @3 [' Z3 [9 A1 R* u; w

1 }4 F) o2 t0 i9 `;;[
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]]
1 v  U; A* U  r. h9 X' btrade-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]
; n, W# s0 p8 V( ~6 @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list6 y$ e' a) F8 }. s
neighbor-total1 P* A  T( `2 p; R" o
;;
记录该turtle的邻居节点的数目
1 D8 p; n, H, a) U7 b& l- F- otrade-time0 E- K5 W5 N' n+ J) \; ~
;;
当前发生交易的turtle的交易时间
4 Y2 x: o0 X- tappraise-give' O+ M6 S8 T+ u' Y  [9 W
;;
当前发生交易时给出的评价
5 Z. p8 s+ p, K! N( Bappraise-receive9 g& e! A( x  r! Q1 o
;;
当前发生交易时收到的评价" a2 {! c3 \6 u) c+ B6 [
appraise-time5 P2 m6 M- M" [
;;
当前发生交易时的评价时间
+ h( ]6 U: ?/ O1 \! J* j" Plocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
) S* d6 u( y6 q4 ^2 O9 I$ Ytrade-times-total9 o4 A2 P% Z; @" E7 i
;;
与当前turtle的交易总次数
" Q! i5 K- n' b, w* Z- j; o( }8 Jtrade-money-total0 [# d9 e! i' }. Y1 Z+ ^
;;
与当前turtle的交易总金额
& o! C; r5 e. d# \$ u) H$ o, mlocal-reputation
7 Q0 ~+ N* a) C+ c* |global-reputation2 q9 G  G; n+ Y; d' F, \; s  `
credibility& m# S- B/ c5 F/ g
;;
评价可信度,每次交易后都需要更新) X0 e) r, x0 B$ d, B
credibility-all
: g9 k( ^" N2 ?, x; j  l3 L1 D;;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
% l- H+ O& @* M" O$ c( Q3 J6 _1 k
1 Z! z1 Z# B8 V% b# g3 y;;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0.53 u5 }+ `) I" f" `; I2 c
credibility-one- @' O$ `" p0 ~
;;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; j% g! x- L4 q9 L* h9 g
global-proportion. b. x+ p2 X' G- z3 w
customer: {1 ^0 l5 [4 C- ~9 W8 D8 f& b
customer-no; {2 N* @. J# i. D( a9 |
trust-ok' E4 u, J4 J! A7 z9 X9 S' I  R1 n
trade-record-one-len;;trade-record-one的长度
7 r) r$ S. n5 x9 c]
* W4 o- _. X' b- |- E, y" W& G0 ]( c# e3 y
;;setup procedure
. {* v' Y1 d' M" A8 H4 s% C, j: |- k  d1 v) j6 w$ a3 d
to setup$ V6 z# N, [6 q% n+ B# o) Q

) z4 T7 {$ {( Qca
6 A% n, }; }% v8 S1 F
% D! k6 E7 d) `: X# |
initialize-settings

  C  A2 ?  c1 Z( z9 w
5 I2 C9 V8 h: U3 h1 v% ^$ _crt people [setup-turtles]
$ g+ S2 v) e' o% [0 }
  J& D* H3 f4 j; d% i% {
reset-timer

/ ^5 E6 d% W) b! Z! V
# k- }' O; g4 k; U+ ~6 t: Ppoll-class

, ^& k; w" L. K' v" j) Z( J. i: O5 }, r
setup-plots
( {0 J8 v9 R* }! p) m/ J
6 O* h: T# R$ q3 D( [+ @; K8 x
do-plots
3 M9 m6 B: {1 ?
end
$ s2 o) Z. n. r' y! G% J7 b, G
! G& u3 m& h* Ato initialize-settings
+ _" N; k1 S1 Q- J
. P8 K0 S* C" l# V# w0 Cset global-reputation-list []
' ^3 }6 |% x" p0 \* q0 y. @
+ j: B; X9 g3 E  ^' J- }7 t
set credibility-list n-values people [0.5]
$ z: m7 C0 ?, J1 |' @: m/ s3 N7 Y

$ P3 C( X& B2 b. I7 q) l, ^) ?# f/ x7 p# dset honest-service 0
  W1 _9 o8 M; d9 P

! @- F3 h3 H7 X6 d3 I3 {: Uset unhonest-service 0

7 Z5 a" |; Z' \/ x0 s  `# H8 m/ N# h, s2 x, [: s4 b& X
set oscillation 0
; V+ q  [; F4 R( u( o% `

! l- w/ d% J4 N) \5 l% Uset rand-dynamic 0
5 c* _2 {% x8 s9 |
end
, q2 a; N) j8 r# X$ h* B% M, B5 j: l3 v4 r4 r
to setup-turtles
1 V6 x! @! a. [set shape "person"# m5 Q1 ?- t" U2 ]- z0 C( L( k
setxy random-xcor random-ycor. b7 _, a) c; i. \! N
set trade-record-one []; R  |# J* m; n+ ^

2 G! R6 c, B8 oset trade-record-all n-values people [(list (? + 1) 0 0)] 7 ?1 _2 S# E4 ~
8 h, F, G6 ^7 c0 P
set trade-record-current []( ?8 z7 o- O" a& f9 p5 Z% Q% Z& ~
set credibility-receive []/ |& f4 b* Y. [8 O
set local-reputation 0.54 n$ {6 M* X. z
set neighbor-total 0
# [% K+ u' Q, e: P2 \8 y) E) l/ q7 yset trade-times-total 0
6 p8 a( E' p: E+ L/ nset trade-money-total 0; ]' |) X: }# Z3 a- a: _  p/ x1 h( |- x& p
set customer nobody0 ?& P/ V# D1 F3 s# M
set credibility-all n-values people [creat-credibility]
* p$ a8 j( v) c* \set credibility n-values people [-1]7 a9 N  F3 h' g
get-color
$ z0 E$ u5 B) G) n/ h  O+ e& {
- ~+ K9 g& _# O) k: o1 l! l
end5 Q8 A$ E; j8 y4 {; Y2 j8 c
1 |0 H$ w  @7 j% _
to-report creat-credibility( J+ z. a) D; q6 i3 @
report n-values people [0.5]: m& i: o. U8 L3 X1 [
end: j( v, }$ h) `  h
, q0 ]6 h0 e: g& ^
to setup-plots
) V6 |& a9 w1 G/ c; d2 ~* ^% J5 z  T' k* R
set xmax 30
9 ?9 \: C: K$ a# z( _7 Q
' h0 C. z. |5 D
set ymax 1.0
& R/ ^; r2 z9 z2 d1 L6 V3 L7 S
9 t1 F. G/ p, z9 u0 ]
clear-all-plots

0 Z% v0 m) k/ x# W$ e
- A7 }$ J3 l( o7 w; Z! asetup-plot1
4 p5 T; _  O3 R+ o6 t
+ M0 _  b9 A1 N8 A
setup-plot2
" O+ a" M; D! N

) [% K- w! D* x6 Osetup-plot3

2 n, S& s) m5 P2 Tend
0 Z# g8 {$ G8 K! R: P  p# \
3 @( U, w: S; p; p4 G6 H;;run time procedures; w0 `8 _4 F$ Z
6 N! i% S, b  v# F! a3 k
to go2 ~! W8 M' |+ g8 T0 y5 B3 B8 c; q

' j, A' o5 X* M  f0 lask turtles [do-business]

! m% {7 v- Z0 y3 ?6 _/ jend5 J8 T3 I$ g) y1 T% s6 j) n

( P# _* R0 u! s6 D+ Sto do-business
8 g8 F; F4 h5 M* @. t" G; ~
* \) k9 a8 ^  B& X/ e5 O8 e! N) c
. o  v: D( x  w9 r9 r7 X
rt random 360
$ x# K8 S! D- b6 s

! v* [" k& V! J  ?( O, ~8 Efd 1

& [0 V; ?" J% l1 X. d) k; g3 S" m. H" i0 [) D1 v( e+ O7 K; [% `- p
ifelse(other turtles-here != nobody)[
: s4 r5 w. f8 t' v' I

2 U: B- k1 E) P+ w# G+ r6 l% _set customer one-of other turtles-here
, T) k4 C# a+ D: G

& x/ u$ {# Y1 Z8 m  p- z$ @" H;; set [customer] of customer myself
0 n% A8 j5 {5 n2 s

4 b7 [5 H4 B/ t" `$ G. L! ^set [trade-record-one] of self item (([who] of customer) - 1)3 K4 I) A0 }: h$ z! C7 ~
[trade-record-all]of self* r. q3 U* S; P/ f( [) T
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

, M9 f* l: Z0 u% w; U: ~/ L# y6 J* J! P3 @9 A( y$ ]; l
set [trade-record-one] of customer item (([who] of self) - 1)
) D- v9 Q6 q% O8 T$ ?# m[trade-record-all]of customer

) S4 @# t$ O0 ]4 f( r+ U( q, t- p9 X
set [trade-record-one-len] of self length [trade-record-one] of self
8 q8 B( Q/ t& n0 I7 s9 T
; L' [, s2 Y, q& h* \
set trade-record-current( list (timer) (random money-upper-limit))

/ H( h( Q# p0 s' m: l' ]$ o9 U9 V: o* w& ^% F2 Q
ask self [do-trust]8 H0 L, u4 Y5 a# x/ M
;;
先求ij的信任度; }9 d! q9 h% Z" r1 }
% O. v) I: {3 {' w
if ([trust-ok] of self); A# t+ M( R+ {2 a6 |+ h# c
;;
根据ij的信任度来决定是否与j进行交易[# m( V) [- {* m6 {3 U
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
8 x; _, k2 H- j& V! Y: ~
$ J) |7 t& S' S+ n* v. N[

/ e$ U1 V/ |* b1 `7 g4 ?  J3 P" {2 O, {# A! z! S6 n
do-trade

8 j4 w7 k0 f- G5 }: {" d+ p
% G$ P! Q0 k# p( @4 O) f, }  rupdate-credibility-ijl

& Y+ H  x( i. M; C; i1 M4 x
7 e& q! y, \1 o' I4 {3 Jupdate-credibility-list
$ e2 G' e( E" z& q0 G4 }: I9 Q* \
( A' S1 _" i+ p; f
" u. F) {/ t" |+ y0 a$ b
update-global-reputation-list
( ~9 o6 U+ J7 o4 X/ z, ?

& `# G* O8 b- u: T- z$ Hpoll-class

# p0 @* T0 s7 @' O" A) c2 L
: l: G* z; W3 G) [3 d8 X4 `; k3 D; vget-color

7 G3 _  L+ ]2 M$ @8 K9 ]" F& D! K7 h. k  J* ^$ @6 l& z
]]
2 }3 e1 q' [9 r* a3 ?
3 v: z" H/ w5 [" j7 W;;
如果所得的信任度满足条件,则进行交易. x# n) f+ S* t5 ]

- l2 K8 L, h: {; S' c" G, D[
. L2 {- j& W9 _; G! |( \9 Z
6 T( P4 H4 ?: Y
rt random 360

9 K# e" V- Y( ]6 k/ c! l' k1 q' U" N# |9 ~3 g8 C" P8 U
fd 1

7 @9 |8 u) Z5 t9 Q" E1 t
( n4 F5 n4 N6 H6 L1 J]
9 \+ }1 H2 p- L% U% A1 I
7 u% M7 _3 n! C4 z5 C3 ^
end

$ d& Y/ M0 \% x$ H, i7 J! H. }! Y/ S
to do-trust : s3 ]4 O2 s9 i9 ~5 ^
set trust-ok False
! d0 \& ?- A( u$ ?+ d  @0 g3 x' V: ?8 V: L

7 L2 n, T" G/ T; Dlet max-trade-times 0
. p  H- [8 p: O# A) pforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
8 z0 x& t: y6 wlet max-trade-money 0" f7 ]: V0 Z% y- O* z2 P2 u
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]3 b9 ~' J' s2 j7 e+ u4 g9 ~
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)); e/ ^- g) ?, N

7 R6 n  B6 X# Z9 u" i9 `
. [1 [# I. \$ j9 K- l
get-global-proportion/ O" E3 w* I$ H: E7 X% {8 A- e
let trust-value
! Z1 l! s2 B7 O0 d& m/ W; V; clocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
& Q9 w2 s2 j* C% g# V) R/ ?
if(trust-value > trade-trust-value)+ }9 v% b' i: _) ^1 l
[set trust-ok true]' [  N& X2 k/ R& y" r3 g4 l
end/ N& D# p/ Q$ Y- H
/ k2 j3 F4 E- [% ]9 L7 [
to get-global-proportion
% z; R8 L5 j/ Y" s2 Kifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)0 i2 d7 N; P- i! E3 Q6 {# Y
[set global-proportion 0]3 \; V; H# V) m2 d
[let i 0
6 Z5 [+ K4 t2 w" qlet sum-money 0; a0 @  m6 U4 [. Y
while[ i < people]1 K+ O7 @9 e  y: H. K+ A8 A
[' I; D2 a% \: u- C# w: d% e! G
if( length (item i
" o* y, @$ h( X! N1 k[trade-record-all] of customer) > 3 )
* H4 r0 K; P# k# g+ o
[
- H8 b: Z: o; z; G- \- t0 bset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
! z5 B$ k3 k9 m/ b, C8 f9 J]
# Z" P4 q+ d; x1 f, j]
+ C2 L4 ~: z! Wlet j 0
. I6 {- @6 |- u" hlet note 09 M5 n" P* L  T- d
while[ j < people]
- G0 c8 W0 U- ~[+ E3 e( {+ e" j( t
if( length (item i
6 j0 h9 ^: @2 q7 @5 J, L( r% m[trade-record-all] of customer) > 3 )

! c& {  y) {$ q( L$ X% \7 y  [[2 T) ^1 q- o7 V0 t
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 d, Y9 L" k0 [( @* g+ y' A' p. o4 X[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
) C" s* Q& V! f+ q[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)], m! B* w+ T7 J: I+ `
]
) P/ i+ q+ v! W6 |4 c7 n]5 {% W0 H; C: b* b% n* R
set global-proportion note6 t/ @4 i. q/ g- \
]/ K8 n: c- ^1 B: s4 [  }
end
% Q& ~0 V8 l2 k) u) n0 O' W: D4 C5 K
to do-trade; Y  i7 J3 B/ R1 {/ c( _' p
;;
这个过程实际上是给双方作出评价的过程6 E( K- b: y, B, V- r
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价' W" s' u2 Y1 f5 Z, Q0 E, H
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
/ ^6 W8 a8 `& A- I, N& mset trade-record-current lput(timer) trade-record-current3 z9 u7 |+ ]5 P
;;
评价时间
3 n' O- @% G& O. Xask myself [( X; h7 X  P2 }' l3 M. h
update-local-reputation
  F+ H3 E+ R6 a$ {3 W; aset trade-record-current lput([local-reputation] of myself) trade-record-current6 b2 Z# }2 P4 I& |
]5 b5 u# u8 X: x
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
( V, }% ~. A, p% O3 Q;;
将此次交易的记录加入到trade-record-one
& J- D. K; ^( H; k6 Dset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)9 n% `* t2 N3 L- \6 Q$ C7 }
let note (item 2 trade-record-current )
7 k: w& p4 Q# F$ z* bset trade-record-current
( n  S2 D- _  `% T  }  w0 u& K% A# E(replace-item 2 trade-record-current (item 3 trade-record-current))
) t* q4 ^: N4 g; Q" B
set trade-record-current- m! A& ]5 y4 Z9 S/ e& A6 w* Q
(replace-item 3 trade-record-current note), T; {( P" C- \) Z9 V
1 X" r5 a% f2 Z% j7 h1 n* M

3 ?; x) O+ ]; T; p$ Z2 @+ Iask customer [
# j7 h# X, f; A% c, V: v2 Cupdate-local-reputation
0 p8 i/ \6 h% }' [5 B( F6 qset trade-record-current
- l% Y3 y1 r8 T  e1 f(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

9 T8 i) P- N7 F( a' v. g]
) x7 T2 O' I6 j. |7 O& U1 A& ~  I! N$ [7 q
6 J5 w( U# o6 A; J# P1 D
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, K$ A" c7 G8 M" U

/ |- a: i, j7 cset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))8 x  a) l" m, |8 X, j! S
;;
将此次交易的记录加入到customertrade-record-all$ R/ ~) a3 s5 v0 d
end
# q' v. Z0 K* h# J' a2 i3 i9 `, F; z& g1 J
! x% [  U2 ^0 F. r* qto update-local-reputation/ i& {% O, [. g0 P
set [trade-record-one-len] of myself length [trade-record-one] of myself
$ w6 j. t) ?3 a7 w/ ]0 w8 Q/ H: f, E2 V! I# T0 F6 R5 q' G

6 V9 a" {" A+ P4 C( L  d;;if [trade-record-one-len] of myself > 3
6 L& z$ k* ?! M6 w# W7 F
update-neighbor-total
( V" Y. l  K% P/ E0 Q4 N;;
更新邻居节点的数目,在此进行
1 L9 w: C# H  `! Clet i 3; M9 w* K. ~/ S9 W4 E7 y1 V1 Z/ X: J
let sum-time 0
" L+ z3 b0 [4 ~, q) J. owhile[i < [trade-record-one-len] of myself]
3 G9 T+ z+ s* u/ R0 o( O$ E$ z[3 [. W3 g; @7 I* Y$ D% P4 g, s+ K9 ~
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
- X- R- p8 o# ]8 E* v$ \; t" [set i9 V( O1 F0 i7 W6 p% N6 O5 B
( i + 1)

  F. \9 ~* ~- Y% d6 c]
. W. F! p4 ?3 D+ U6 ^4 u/ Xlet j 3' R1 r  `2 c2 T' ^  C1 k
let sum-money 0( m$ K" r/ @, q9 y1 N- c
while[j < [trade-record-one-len] of myself]
6 k9 o4 {5 M6 y+ O: C[0 I" E$ b% l& |4 F$ q, T
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)
7 N5 ~% j* [/ B- wset j
. n$ ^# T/ E' _* ]. I% k  W( j + 1)

( N* H  c: m$ f; |1 L]
* X; P) k0 R$ Hlet k 3
4 g$ Z% _& h& ?; M- V, `let power 0
" j- r1 Z, a5 @let local 0
& n' `* F6 M+ z3 {while [k <[trade-record-one-len] of myself]
" u! P( ?0 V3 }4 F[" M! P9 w8 C6 V# S0 S5 }; O* ]
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) * ]* h- n: f7 B( P
set k (k + 1): f5 c% z! s# s% @- F
]- \8 t7 D: s. \0 O- Q/ h- L
set [local-reputation] of myself (local)" {# n, W1 c# F2 |+ x+ ^
end
% \. R/ c( r8 l
2 z3 W( c$ n+ Jto update-neighbor-total1 F; ]* ]5 M3 Q: p1 K* C* m. W, D

  o, j4 u6 x7 g3 Fif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
; [2 r% T+ U' a' G
% b# l( p1 z$ T7 c
8 v, v8 ?/ ^- T# N8 a3 p; A0 h% y% q. C
end0 [5 n: [* t8 z) g  c
  P( F% F2 x8 S5 L& {$ F
to update-credibility-ijl
* R: f+ ]9 Q8 C7 R& T* L7 P/ ^5 R
- y7 v& b+ v% H; w- N/ V& `7 h: ]- m& f;;
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。: R, s4 J) R, e" O3 S# V
let l 00 _5 j7 g# a$ k
while[ l < people ]
/ a: |7 e. \" C. R! ^; O7 Z4 ^;;
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
1 z  u3 y! U: i$ N" ]& O[
: @% R* k  V1 m+ i( Nlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)3 t$ c; a" ?) k( B8 _
if (trade-record-one-j-l-len > 3)
! T# 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-one
: s$ l6 U( L4 t6 u: M6 M" v( `let i 3+ _/ r9 @: c4 m" f1 _
let sum-time 09 N  H- V5 c  p$ q6 j  O$ s
while[i < trade-record-one-len]
( E" N' z! w& F[, x9 O! v* K/ A8 [* Z( y6 _
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
% U, F. k* [$ Pset i* u& ~# J# ?0 e4 g, }7 u. a
( i + 1)

: z/ F: a+ `  j2 v" n# F]
4 W* Q, e( I/ D" I5 v+ _let credibility-i-j-l 0
' B2 H( P, z4 d9 s+ I2 D;;i
评价(jjl的评价)
0 ~$ A8 |' u/ y- F! U& ?let j 3
6 Z$ r( \* s1 T5 zlet k 4
' `1 m: {/ S: ^7 ~while[j < trade-record-one-len]* X- i( z/ c, H1 S" A" [6 H
[$ v9 q' \& Z+ c7 ]/ Z3 Y0 U) b
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. W& J: K; h5 {, s* R9 \. U
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)
" n" p: `$ y6 _; gset j$ {7 z0 T& C9 ~* u1 e: e7 B
( j + 1)

. b, q+ `& G( Z]8 F2 i2 w& S2 c! k1 Y! W# s
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 ))& [/ I6 X7 |2 V) y; H6 l
# s6 ^8 y: D1 g* }. g6 ]% ?
- v- m. V6 O6 ^; ~8 B) g4 x
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
' i. w8 |1 V% E. O" U# I( t;;
及时更新il的评价质量的评价6 d6 ?6 C% m2 x. h' |( a
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
; i: R0 ?6 {7 ?! L+ D3 J1 s8 ]set l (l + 1), w' k9 _: n( V) q; h  h
]
% I3 L& ~+ V0 D+ w4 oend& u: m/ d. w' |. S% z, e

$ [# r* D3 A/ r" U  kto update-credibility-list! |4 _% G% }$ {) x- H) V- d
let i 0
, w* h0 d4 R5 owhile[i < people]
9 z# b2 D3 H6 d  x5 _1 B% q3 T' X[
1 r# f3 j8 [* C( alet j 0
" g' Q  b7 i* `3 ?8 [2 M8 g4 Mlet note 0
6 }! W- ~/ P' _/ ilet k 0
9 \5 Y0 U! U. r8 |;;
计作出过评价的邻居节点的数目7 S5 o* k7 ]3 G- e
while[j < people]# _* z$ c/ M8 _# C0 \
[* K. R+ C" L: A5 b6 z( \
if (item j( [credibility] of turtle (i + 1)) != -1)/ Z8 O0 s. y8 G# m& u
;;
判断是否给本turtle的评价质量做出过评价的节点4 X5 C, m7 Y+ L, Q, C- L9 Y4 c) V
[set note (note + item j ([credibility]of turtle (i + 1)))
4 j  d% `3 w! ~;;*(exp (-(people - 2)))/(people - 2))]

8 |: j6 z' S. T( n+ S/ nset k (k + 1)! v2 Z( q7 m" B
]! T/ M1 K8 Q* H) F* G: i
set j (j + 1): f* R3 [3 P# T% X, d" F! g
]# Q: Z. Q( N: D! T5 z% F& ^& U
set note (note *(exp (- (1 / k)))/ k)! w4 s5 Q5 ~+ Z/ T1 u8 S1 ^
set credibility-list (replace-item i credibility-list note)
4 R. o$ f0 W% k2 k! ?8 S/ E8 Lset i (i + 1)
; Y8 g/ o1 u3 }/ A$ N* z0 P* }8 F]
' P8 r" j' I$ V# A" r8 mend3 `+ p6 ^) z  ^3 P: C2 J+ w

: t+ w4 D& F3 P+ G3 J) N$ Sto update-global-reputation-list( |1 ~" s- j! R* l, n5 a5 a& `/ W
let j 0
. v! z# |. y8 T; ]while[j < people]5 v$ n4 {. a. K, P/ v, t6 [
[
6 E* U8 x" I) p; m; @- B' @let new 0: }* x: D- ?  q* T7 }8 \" i+ ~
;;
暂存新的一个全局声誉
' ]; _" q* U6 x& m2 n6 `let i 0
7 k" ^, [: L; ]3 t8 C8 z( qlet sum-money 0! m1 O  R' H+ ^
let credibility-money 0( ^6 b) u1 M$ k
while [i < people]
4 R. R' M7 ~% g' G[; f3 N- M! V6 w8 l
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))9 P' Y' U* ^* D" O7 s. E- V
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
9 y9 W+ D9 k+ wset i (i + 1)
+ r& {' M1 g/ j4 c5 u* t* o]7 \, I$ q4 S+ l: U
let k 0
, O+ P) t& |, C5 k& g. [let new1 0
' X$ g7 h  ^, g* _+ P6 nwhile [k < people]
- U( W8 m4 o( c$ m/ s& q[
3 J8 ^/ K- l: T" tset 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)6 K9 Z$ I; e; {  R; `# g
set k (k + 1)1 L) g: P; m+ [, i# g; k
]
+ j3 W6 F7 |) Zset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
2 t* w% z/ s/ oset global-reputation-list (replace-item j global-reputation-list new)9 u  ?, p' `5 w8 B6 H* |
set j (j + 1)
& x, N9 ~# }' N& B3 X1 I: Y- P]
, `* D% C9 z* [end
6 r3 j6 v/ d5 l- C4 ]. n* s' l3 ^5 B4 ^0 a  _' F' V0 ]0 g

9 I2 o# D- P7 H9 G. o. ]% J, Y
+ l$ N* \  i' Q) O) F! Z; w# Tto get-color# w% g6 I, Z! v9 Z+ ?- Q. k  D" X+ g
8 ?6 J0 o& g7 q6 _) s% }
set color blue

1 S! T$ y6 V+ U0 {7 l% F, O5 tend
3 K$ @/ S' u- Q3 z1 J/ z  g
1 `. e& K$ p1 _+ Jto poll-class+ c2 v; ?2 e% C  L$ t  h) C/ j- n9 D
end9 U* C4 I& {9 C& g6 p
7 I4 f! G( d% e8 q7 y7 ~
to setup-plot1
* Q7 V: [! w- b- v, ~4 |  o
8 _9 L% s& H& W1 J& Dset-current-plot "Trends-of-Local-reputation"
: S$ _6 P. w9 R& N  w2 B4 Z4 [& V; |

2 x  @  Y0 o" Gset-plot-x-range 0 xmax
! l! r$ \" n  p: q7 b+ o0 H

4 _0 x, `5 i1 [3 m2 Uset-plot-y-range 0.0 ymax
: T$ L6 {. I' U* I
end
4 P9 E. S  n) c- h: ^5 `  `. `3 e  t% a  X7 K
to setup-plot2- m, r/ ~) I& u/ V0 c2 I

* Q* C  s+ y! Cset-current-plot "Trends-of-global-reputation"
3 |+ p: e$ N$ H6 E: ]. d; S

$ ^" u  _9 W. A' j8 v9 kset-plot-x-range 0 xmax

: |2 u; B0 s8 N) v7 j) z" v. c, y: ^" `# e- o2 A/ n
set-plot-y-range 0.0 ymax

! l. i; ?9 w& V; G4 jend8 Q3 F, `# }7 r5 X" [6 }5 }

3 h  Z4 Z. P/ L% ^5 Qto setup-plot3! l% ?* ?4 ^/ n, [

! Z& y6 ], u% L+ V8 S1 V" |+ wset-current-plot "Trends-of-credibility"
! f/ h2 b6 u6 f: J" U7 W
" v/ r; Q: _! {# X
set-plot-x-range 0 xmax
7 {8 j4 `, I, m! t

  s# K; S; }# v' i4 I! C5 c) Eset-plot-y-range 0.0 ymax

4 D4 r% g4 {+ d# Dend% a  T; ]( C/ O, v0 p

' E3 J6 v  N( u% B2 g; O9 e0 t! lto do-plots
9 {, z; l- B4 p9 M# y7 Hset-current-plot "Trends-of-Local-reputation"
; I# K: |/ ~1 h! H; vset-current-plot-pen "Honest service"
8 M& o. r/ G1 Q% P5 H  w+ h  Gend0 b8 E" S! @0 H. r5 E
7 G' Y# k, M; }% x
[ 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.9 Q% m+ x8 y2 j$ L* ^

' w$ ~9 u% s8 q5 f: h+ G6 Y, 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?
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, 2026-5-22 07:17 , Processed in 0.022218 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