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: 12264|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:7 p6 t* u6 \. S2 R4 a/ g8 O
to do-business
' {/ r; y0 P: u6 m# G% a( e- W rt random 360
' S# E4 D) f' L  L; J9 \ fd 1
3 n, }# n8 W9 n6 r/ d1 U ifelse(other turtles-here != nobody)[
6 d! ]3 J. Y9 f   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.
7 y2 ~% H0 Z+ x   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    9 o: O" o" W% R" `
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer8 G  X2 ?3 y: d. T" k* P
   set [trade-record-one-len] of self length [trade-record-one] of self& j! U2 K& s% X% _* b
   set trade-record-current( list (timer) (random money-upper-limit))% Y. P9 C) e3 S$ G

. W; P( |) S# b/ e, V* _问题的提示如下:
# E7 o' ^( b/ p' ~! t0 M: J3 r
0 f  u$ Y) R, ]- S3 z! f) cerror while turtle 50 running OF in procedure DO-BUSINESS3 `0 N# p4 C  [/ Z% f2 V' v9 `
  called by procedure GO
! d& m1 R8 I0 B! r3 S* Z/ ?9 Z3 zOF expected input to be a turtle agentset or turtle but got NOBODY instead.) c% A. F# h  V1 V+ E; L- t
(halted running of go)* x9 J' c/ p0 b
2 F8 d1 @" B4 I( ?  V+ @
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~~  k; J, s  a3 g# @2 }" @
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
# E. ^$ G# }# j2 }+ G  Qglobals[; }8 b6 O+ R0 T
xmax
$ R3 K- E  m1 f3 M% C. X1 N6 ~4 E$ Iymax. k' \$ x# r  J8 |" M4 X
global-reputation-list3 `7 @) O0 \4 ]3 p4 {

5 n" p- D* Z, ^! c;;
每一个turtle的全局声誉都存在此LIST- `- W! Y. n3 w; {
credibility-list
* \3 a% x  B. N8 ?" l/ \# [/ O6 p;;
每一个turtle的评价可信度
( T. V/ V: ^* B; }& v: ~honest-service: t" y9 b3 G0 [
unhonest-service
0 m2 a# ]% {0 b3 q1 d( joscillation! F( s  |$ P7 {4 O7 x$ Q
rand-dynamic
: ~- B( B8 s- q" C+ ^6 F5 Q]; ?# i# U  v# s8 d
5 p" h3 W* g" \$ l
turtles-own[
1 X# L, w& W- Z: b8 f, Btrade-record-all
! p9 a- q" }% ^7 H- @2 L5 j$ v$ z;;a list of lists,
trade-record-one组成
: x& \4 a. l/ }3 A+ g% t; Qtrade-record-one
( J, ~; h, N6 }# o" w;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录& B' e/ j; U* U' {) w
  b3 c" z6 c# P
;;[
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]]
( Z5 M9 m7 N- s0 W" l5 htrade-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]8 D% h  W/ H" n/ C; R
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) G8 ~4 }$ L( b% a
neighbor-total& o4 w- ~3 H; P) G; y
;;
记录该turtle的邻居节点的数目
3 X" e1 I* ^, V. [trade-time3 V+ _% f! k% V3 ?7 C
;;
当前发生交易的turtle的交易时间+ P; G- L, W% H" M$ `
appraise-give* D' C' s5 P! @; z" h3 t9 |
;;
当前发生交易时给出的评价
) f7 Y) v% ]' f. O) H6 Fappraise-receive
; _0 g( b+ C5 B% {; b$ e;;
当前发生交易时收到的评价% ?$ Y; ^' n. L* F0 H4 ?% W: \
appraise-time
. c, q6 d4 c4 G. a5 R" t;;
当前发生交易时的评价时间
0 h0 A- W3 v9 Q9 k8 @* q7 Glocal-reputation-now;;此次交易后相对于对方turtle的局部声誉. z) `1 h) ^+ a3 Y: f
trade-times-total
0 V! e& ?+ W6 d- ]7 p;;
与当前turtle的交易总次数5 y" M" U/ ~  e+ C8 y
trade-money-total, b% z! w- K6 }. n1 u; I' ^
;;
与当前turtle的交易总金额8 s1 g. f, ~/ N2 S9 |' L$ L8 z
local-reputation1 t" c/ Q; t! C  u) D
global-reputation/ K: ?* N8 {+ S  r. H
credibility
5 K4 r, W, O% K;;
评价可信度,每次交易后都需要更新
3 s) Y0 y' G5 p% zcredibility-all
8 M4 F% p8 r0 w1 T" [/ F3 D8 M! `;;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+ I+ @+ O2 O; n* m9 D$ G
7 t% }+ G9 [! D& x% X: R& ^
;;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
) c/ t, _. |$ }6 }: e+ C  \1 W* Hcredibility-one
# h$ |+ S) h: W% t2 j9 {;;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' ~" G! k; {% ~$ b, jglobal-proportion
4 w6 h/ C; B( t9 ~customer
2 E5 K6 Y0 `9 `6 A& R! c+ l8 Icustomer-no7 z8 Z/ T7 Q- X
trust-ok
2 C" l0 l3 O' f% [trade-record-one-len;;trade-record-one的长度9 D: |/ a1 W0 v( i& A0 `  ]* ?! H8 ~# A
]
* u# H. E1 @0 ~+ Z
) ~) Q- {8 O4 F: P" m;;setup procedure0 \9 K* v) w1 T4 W! c* l. s
" ]! x! f' @+ ~% d& ~
to setup1 `9 N3 U8 O1 \- [: C
' a1 k4 e: N: Z
ca

4 D" S5 W2 P2 T# t/ Y2 c5 Y5 Z7 a- ?1 w+ Z5 \
initialize-settings
' U/ V  j$ {  W! f1 R/ A

% s- c$ |( C/ a  Q, ccrt people [setup-turtles]

: s% H9 W! p. b1 A9 q1 }7 B" Q2 Q4 J
reset-timer

8 J+ C: ], F& v: \1 S+ t& Q4 {- K. H" {" y
poll-class
* ~5 @9 [. {3 h7 ^- C8 |
/ |" W: o  c& s3 B5 P4 d
setup-plots
4 Y6 D: W9 y% f$ y
) H' N3 b9 q- n3 s% ?
do-plots

9 c' ]0 U0 j; Aend2 w  T9 x6 l) R
5 p0 T) y' v, Z3 U4 C9 V
to initialize-settings5 \) l1 j$ Y$ M. J, _

+ B4 S' u1 U  e. @set global-reputation-list []
. `) b3 V* d3 K* }0 S. ~( n
9 h* k; t; q7 n; Q; ]2 b
set credibility-list n-values people [0.5]

7 ]' q5 v5 X+ a( ^% X- y+ c7 g
+ K! E% G% q4 @: kset honest-service 0
- a! K4 G7 S! x* o4 m/ u( J3 M: X7 Q4 l
' m8 W  p/ C5 ~5 s
set unhonest-service 0

  I+ E# Z$ E. t$ O& P4 a* F+ z: g$ d! `, W4 J) P0 @
set oscillation 0
9 O0 [5 i! [: U, l  K  z

* O/ t$ h$ Z& Z/ d; iset rand-dynamic 0
  Z: v1 ^0 h, @. w3 L! B
end
* J8 Y6 q) G  |  K/ ^! Y) {
1 W5 j6 }' o, [3 S/ M. u3 q) G* Kto setup-turtles
9 z. k+ y  e) A: d, gset shape "person"# o0 l5 ~) I; l
setxy random-xcor random-ycor
! h0 ?1 R. p8 ]1 @- aset trade-record-one []7 @$ c9 ^9 p# m( Q. P

: x) _' E+ z, U7 f2 C, K7 Q  q% @set trade-record-all n-values people [(list (? + 1) 0 0)]
- A* T. ?3 Q6 Q
: t6 p; J9 \& ]% J- T  s* g
set trade-record-current []
4 N9 _. e8 j5 pset credibility-receive []- O. J- k0 f! S2 {6 I8 A
set local-reputation 0.5, Q% e& v+ W) E6 S% {' v% @
set neighbor-total 0
# P4 L+ m* D5 \( c) Jset trade-times-total 0
6 R+ y3 Z0 a0 F9 s, n+ u, gset trade-money-total 0$ X, C0 e: _0 {* v. ]" W
set customer nobody1 M6 ]+ n8 A' k3 d3 z( c' T) i. f4 L
set credibility-all n-values people [creat-credibility]( A0 n/ x8 G' q2 R
set credibility n-values people [-1]
9 l* A% a# Y% d5 R: eget-color" _' s9 ?, r+ H3 z4 [# \

3 E& E! w. ^; P  m$ s6 j5 nend
' F; Z  `5 r! }! t! ~2 d- X6 m
9 P' C8 h$ p$ n7 vto-report creat-credibility9 u# j0 e- w0 q1 a& \
report n-values people [0.5]1 l9 h2 b! \: c. }. M6 q
end
6 A  L$ Q$ [* P$ k2 _; f2 T7 @; g+ ]8 a0 t
to setup-plots
6 C; O' m# t2 F; W) Q
* R0 c' X0 N* r, L; o) x+ mset xmax 30

; j* u, a& J& f! M
( n( H8 o" T8 j% d( C$ fset ymax 1.0
6 ?% R" _+ x' @9 j. ~# |

6 J$ X, \) _; ?/ xclear-all-plots
# n  [7 Z6 p# R" G, X
4 ^: n0 r' g5 F2 V$ v2 v
setup-plot1

9 E  k  a5 R  r, p7 O) I& y
$ n4 o. v, o  Q, f+ W; N8 Lsetup-plot2
6 K8 z) N2 u3 Z# j" D& A0 }

% X9 X+ ^# e5 H& Q: X% xsetup-plot3

# g% L, L0 u7 y4 p, K' lend
  [3 U5 Z4 |: M; O/ x; _& k; `2 E* v5 Z# d( [0 Q* l0 o9 E
;;run time procedures5 C3 j# [+ K; e7 J1 c

$ @' s: N1 l4 d% ato go
7 Z9 A) Q0 O8 S; v
* Q: M( b$ [! I" oask turtles [do-business]

3 w6 D9 a+ q. L, |# k9 {! vend
6 y% C4 q$ G, `2 l, \: I$ [" [; Y+ _) z/ j- n' _+ b
to do-business 0 ~0 Z6 U% i) z( a% o
& e* t" |1 ~% U1 k  _0 P

: b7 W* f* ^. b0 T  v' @3 vrt random 360

; `, i5 X  c3 T7 z3 K8 V
# v4 F3 L, j6 `$ g* ^# rfd 1
4 `: B; Y7 M1 M3 C
. {' t' u7 Q0 c8 o
ifelse(other turtles-here != nobody)[

' t& B0 z$ C% R6 n: E4 T8 \
1 L! X+ Z% t: w7 [set customer one-of other turtles-here

2 y- I0 c5 s" B* |6 i+ S4 J' e9 S. ]
;; set [customer] of customer myself
( \5 _' w! ?1 Q
% _9 |! t7 l+ I* M! N
set [trade-record-one] of self item (([who] of customer) - 1)
  o6 ~8 U1 {0 {2 N3 g4 }3 g8 g' G9 U, w0 A1 H[trade-record-all]of self# S) L6 ?  L' q; ?* v* H
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
+ N) ~+ }) Q2 ^8 I2 t' m

) d$ D0 ^* R) ]4 Dset [trade-record-one] of customer item (([who] of self) - 1)
6 \( E) j0 ~8 j+ d  {( P9 G' F, ?3 X[trade-record-all]of customer

$ P$ L  ]# ^, k# V9 Z! E
7 Q# S) j3 ?! o+ H+ `6 f3 b/ X% aset [trade-record-one-len] of self length [trade-record-one] of self
( d, z1 y# K# o' |6 z$ h2 o( N

; z/ u, G% [! ~$ Q: h' Gset trade-record-current( list (timer) (random money-upper-limit))

% {) T0 h" T! W5 N) I9 s$ z+ B. W" ^% E) w0 G9 d% [/ w4 c
ask self [do-trust]; u6 A; U9 `3 J0 A3 t0 m
;;
先求ij的信任度
8 y3 |" @- t" }4 j8 e/ p1 G' [: v( R( R5 F8 ]9 S. [9 P6 |
if ([trust-ok] of self)8 H% [9 v7 A1 s0 [' C/ F: T+ O' K5 |, W
;;
根据ij的信任度来决定是否与j进行交易[% L; Z& {1 o6 B1 f
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself# ?/ u* u+ u4 K! P' b8 i2 ]

$ S1 Z3 e# G) r. ?) k[

0 P8 ?" ]( r# X+ X$ M$ X8 z4 K: o  e, T4 X# K
do-trade
6 q/ Y8 ?: ^$ H2 x6 T
/ S9 K. v4 {! {/ L. `
update-credibility-ijl

9 l+ U0 e9 K' s
6 q) \& p& y; ?# Qupdate-credibility-list
! p' `6 d; l+ O% P4 \

6 y" G$ b0 {+ f* Z- F
7 V' G3 Z2 u% O! e1 uupdate-global-reputation-list

, x3 x: G3 N$ e8 ^  o5 h9 z" d
3 x; [9 v2 K1 ^  x* c+ b3 bpoll-class
. E2 ~1 u- Q. L8 y8 x

3 i% ^. Q) i8 e( d* Y. C( L+ `get-color

1 Z; d2 p4 J* @
+ Q- n( u) H/ M4 o: w% }- Z]]4 N4 ^4 O+ s6 O' x; n$ f! [
. A' q* m3 c2 |& O7 v
;;
如果所得的信任度满足条件,则进行交易
$ Q4 \3 Y* y% S3 M! `" Y
& V, T# W/ D$ L" L2 {[

0 w. ?, q: ]) K3 X6 m3 h' W' X) y/ i* n- A# Y
rt random 360
4 }; j& g4 {; ~4 I+ ?8 V; i

% B8 c% F0 I, f) V- G4 s0 Kfd 1

# b! C& x  S7 R+ i" g! q- ]  O
  b/ o0 m" n2 ]0 l9 T8 ?; P, V]

; j6 ^) i  H9 Q3 ~- ~- {9 _$ k' i, D
end
0 D0 ~8 y5 U! h4 Q: V2 s! N) F

+ o( c* o9 q3 ]5 w6 g; ]# p+ |to do-trust
( ^; t! r- g; }- nset trust-ok False
6 X8 v, y7 a. X3 G; I
& Z0 o9 x: u: F: q8 M' c
4 ^$ S- c  y% j- V7 e6 |5 N
let max-trade-times 08 s& U" N9 N; Z: b, K" s* S8 r
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
4 a5 j4 F1 A0 O$ p" _6 j# ylet max-trade-money 0
0 F9 I0 z, o) S3 K& c, o7 }foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]9 S* r" I, s) F! R
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))& r4 Q7 H2 G9 e% J: z$ \

; [, `1 h, W7 A! X# ^3 P# w6 `+ R

5 R$ L% M( o2 J, \) w' r+ _get-global-proportion
  d* l/ b; r7 q# F+ }$ alet trust-value
& m6 L  I6 \0 p3 s5 ]4 H7 |( rlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
. R  [' ?8 ~$ b3 d
if(trust-value > trade-trust-value)7 s: f( w% M; ~0 g4 y+ t
[set trust-ok true]
  L& C/ p' I) t9 [9 _1 X9 m, Eend% t, _8 p% R+ i1 X& g! ?

) {  C/ e, P! ?to get-global-proportion
; F: b* S, y, `( M2 ~' b  Z3 Uifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)9 A- D! V# `; m8 E+ K  `4 f' m
[set global-proportion 0]7 x. T1 l# n9 J. R& m
[let i 0; }5 G+ Z& h9 p5 }  }
let sum-money 0$ s) k, o. T! Q" }& X1 v
while[ i < people]. ?7 E( h4 q$ d/ U* M8 _
[
7 F" }3 e# a  Pif( length (item i2 U* T8 T2 X) u+ m- ?9 E
[trade-record-all] of customer) > 3 )
/ u8 Z8 f8 w5 e! T$ p2 f& B
[
9 F6 N3 o: j+ {: A8 r/ Yset sum-money (sum-money + item 2(item i [trade-record-all] of myself))8 i4 h' f9 I0 F: r8 O: N
]5 Q- N0 G( `* v- G" }+ q
]9 d3 s9 b! z$ K7 j& [, Y
let j 0
; L% Q" e  Z2 ~2 q! R' I5 f* f' q0 l; Llet note 0, @7 v# b2 ?# Q. v, w
while[ j < people]4 W9 L% i' N- |0 G2 B
[% E+ T# ?9 W" g- Z+ i6 u' a
if( length (item i
" }% D* i- D( L- n9 V+ B6 z[trade-record-all] of customer) > 3 )
) M7 i  k3 l; O9 d
[
& A3 X+ B) U8 Z2 x- Y$ ~( _ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
3 k$ h5 z0 p  W. m3 G[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]) Z" s0 [5 w7 n7 ?
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]7 x0 Y5 {; b9 Z
]" P) W$ I0 ^" m  x. }8 Z! S' m
]; Z" ~, ?# ^6 k& y+ f) a% y
set global-proportion note
5 u6 _  @5 S/ f# r2 r$ K4 b% }' w]
* {, J" a4 N  i' W; r9 e7 Xend
5 H, M+ f" @) e- |" ?) ]
+ ?) e% T+ q$ W/ J4 Yto do-trade& C8 k; E4 y" L
;;
这个过程实际上是给双方作出评价的过程, N+ d& B3 u0 o! X% `% n, s
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价$ p- R' I4 ~  |+ }2 }8 r( p
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价3 N' I% l4 I4 h5 K
set trade-record-current lput(timer) trade-record-current
6 [6 M) K0 J: _# p) H;;
评价时间
1 p/ ^4 L) s  T: p( o/ u& {/ @; Dask myself [% M" x4 n8 L7 m+ i( \
update-local-reputation
& {# D9 R7 l0 C) `, \  xset trade-record-current lput([local-reputation] of myself) trade-record-current
3 S$ B. N- d3 ^+ c]
. f: X! Z& u& P. Y% xset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself4 G5 @- O% R7 J
;;
将此次交易的记录加入到trade-record-one
8 L) O( W8 u$ C/ [  c) Dset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)0 p2 \2 q, Y. _* O. {+ V& ]
let note (item 2 trade-record-current )
, j$ j5 k  `3 T: h* |% B# c- Qset trade-record-current3 h5 z! {) f6 i
(replace-item 2 trade-record-current (item 3 trade-record-current))
+ z! Z+ }* F: u. [- }
set trade-record-current3 ?: d$ j- A( b. v; `% q8 T
(replace-item 3 trade-record-current note)
2 l* i- P. ^8 ]7 a! F) a  R9 r3 u) z# e6 H7 r7 I2 K

1 j0 p  R2 y/ Q1 e+ gask customer [
$ ?8 @. a; [6 x; zupdate-local-reputation
5 Q8 o1 K( M( ~0 }$ |set trade-record-current
! \2 D9 ~# @6 J  Z  T1 W(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
" q, i) E; H8 L
]
: I2 L5 |6 E/ B& A" X7 X- Q! Z
; m* w; d1 y! W1 w0 b) W& L

0 N! E- B, l% s. Q6 X* Eset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- A0 R2 E% ?  @. v1 @

: U  |7 C. ^2 Iset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))/ p+ ]8 u' P6 h9 z
;;
将此次交易的记录加入到customertrade-record-all
- M( ~: F2 B/ Q! A, tend0 H9 V8 m& F/ ~

/ G! J" F* n) ?7 kto update-local-reputation- Y* o4 g6 n! {4 e% L& ~  k
set [trade-record-one-len] of myself length [trade-record-one] of myself- E2 i9 b6 A: Y
0 n* G) a+ h2 f! n

; B* C5 u- C6 t2 E;;if [trade-record-one-len] of myself > 3

: i7 _4 E: `5 ?5 |update-neighbor-total
, _1 o  N) q- `$ Z7 S' c+ C7 P;;
更新邻居节点的数目,在此进行
; r% e7 h& u+ i$ j( w1 d6 K) a$ ~' ?let i 3
; a& \6 \* D+ }3 b% flet sum-time 0
0 ]3 s) T- D) T% g$ N, g) Owhile[i < [trade-record-one-len] of myself]
/ R! G. L0 x, S' Y% R! g/ {[
7 S% `& }' d& vset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )$ ?% X+ C0 K3 B
set i& c4 r: ~0 x: n, d) ?7 S/ D/ R* s, |
( i + 1)

' U" S/ i/ j- H3 @; I; X6 ?]
" L4 t1 K% t/ p2 }let j 3$ r* m  x$ v) Y- y$ A! ?, ^, w3 B
let sum-money 0
3 B$ ^: k9 B7 Y9 F% F1 N; M$ b+ S% r% wwhile[j < [trade-record-one-len] of myself]  ~+ ^2 ?' o+ s
[
: F6 E! S8 u; l( d' rset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
/ E* c  I# l( t3 S& Gset j
8 ~. ~% R5 D* D' o; g# y( j + 1)
2 n0 O9 I7 \7 p/ X  q
]
0 N9 Y4 s% f$ G& Z' r+ B2 jlet k 3
, Z6 p; D! z# z/ Glet power 0% _# c) v# [- H  C
let local 0( P( k9 ~; _6 d& W. e. Y
while [k <[trade-record-one-len] of myself]" H. V$ N9 Y& ?4 o/ T  ?
[
9 j$ I  S) T# @: g' N2 J9 Uset 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) / u5 ]& U' _* u( ?
set k (k + 1): r7 t8 ?& p# y, O
]
8 ?; I5 z; v) U9 k! {set [local-reputation] of myself (local)6 I3 a! R" C( T8 U  U* z1 i8 R
end
$ L; A6 E, Q0 H0 N7 C* P+ t6 Q: X% P2 T; |7 ~3 B9 R; ?) U* g
to update-neighbor-total& k* j& z# c, g6 F$ j
) l: X+ y( {3 Q1 ~' z, `( U
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
; V2 S) a  w4 |. W$ t8 T3 I" m
2 E8 m. a  [4 B7 n5 S/ I% u  w
6 v4 A: W- Q  e8 a! |: z
end$ h  ?* P8 T+ x8 T, L
' C0 `( q8 _4 m- w
to update-credibility-ijl
2 t5 Q$ ~. d. @6 K- V, O, M" W  J- N
;;
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。
. F0 e. t7 H  q% clet l 07 b5 H$ u/ n- ]2 [, I
while[ l < people ]
$ c& D/ s  J: G8 h" G; r;;
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
5 I- ]  ]' |. R1 M/ ^[0 {0 |# V# ?# Y- u4 g
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)7 s9 S8 d8 k$ z( e
if (trade-record-one-j-l-len > 3)
7 K- z4 h/ |$ B, t. S[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
. c. e& Q: t: v2 m6 ^) P& j; ~let i 35 Y( @# ?" W: P+ I) O
let sum-time 0! ~' G3 P: q- m5 |' t5 {) [0 z
while[i < trade-record-one-len]
( r( F! e$ K  {# R4 P: [& \# X[: r1 t. U& y& B, I% C+ K# k' h0 u
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )3 e! v6 ?* z2 {/ W1 p) s, S
set i
" \4 d; l( v# J8 U" D3 ~  g( i + 1)
2 G: a5 K# G2 C
]
, p2 |3 a! d' v9 J: F8 ylet credibility-i-j-l 0
5 `. D. [! s4 X1 O6 _0 J4 f;;i
评价(jjl的评价)
8 b. S* V3 R. k5 c: _- ^let j 3
3 r# b- o  w$ Y: k3 Olet k 4
. }; w+ |( _$ Q' Cwhile[j < trade-record-one-len]
& ?  w% Q$ A7 b" f[$ G) A+ j0 `3 V; _6 J
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
/ S8 `2 U0 _8 M! R- N! Oset 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)- C) `/ M7 F% ?4 D" K0 I- E
set j9 f6 t# Z: U3 k$ ~2 w
( j + 1)
$ S+ J% U9 A' r( ~0 L/ ]
]
$ ~& z* g- J9 q2 ^% Z1 N) A! F. _8 ^  Tset [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 ))) y  v. K8 A/ D. h$ C! }6 @

/ r, L: }2 [: c5 e. E- a

( e5 B3 X1 p6 m: g0 ~  Elet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))# y1 Q; n( k2 K
;;
及时更新il的评价质量的评价
: X; L# r) p. r" L) xset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
1 a' z  R/ R$ X1 m( [. x+ qset l (l + 1)+ k6 ?2 q) M# c" I4 e
]& n& Z( |' p/ d" }
end2 {5 [) ?' E; k% b9 U$ ~6 J; |

+ B7 |7 r% I$ oto update-credibility-list
  y5 l5 T+ S% Z& a/ Ulet i 01 J1 @% `' y6 a4 U
while[i < people]
; p: S  k$ i% ]6 ~' w. _( a2 b! m, z[! V, _5 L* L/ a5 |' ]" P! G) o- ?
let j 0
. K. g4 ~5 q, Y- w* Klet note 0
$ K$ a  t6 _6 P4 Z; U! P: W6 Dlet k 0
  t0 V* w: n% S  s* Q3 R2 U;;
计作出过评价的邻居节点的数目
, H' l& l/ K* r& K  ]0 N" ]while[j < people]
3 {# E6 t5 N% ^& w  p2 ]' r0 |[
' q1 _$ f* c% O7 M& {if (item j( [credibility] of turtle (i + 1)) != -1)" \" ~3 Y/ B# |' Y
;;
判断是否给本turtle的评价质量做出过评价的节点
; P4 I% h+ q4 q0 S[set note (note + item j ([credibility]of turtle (i + 1)))& D# c: _+ R- x
;;*(exp (-(people - 2)))/(people - 2))]

1 p% z; y5 b* `" zset k (k + 1)3 |. d' P* P7 G1 X
]
; H; X2 Z& Q: _' L5 W9 d' J# Eset j (j + 1)
4 V  ]. K+ l; n& C1 Q]/ i" b& i7 A+ f
set note (note *(exp (- (1 / k)))/ k)) `: X: |- S, i- Q6 k1 b
set credibility-list (replace-item i credibility-list note). `& H1 Z) V/ h
set i (i + 1)/ D0 ?& ^2 ?! S) R$ S! v
]
2 F' S( U% V; r0 ^1 M# |% Send9 {7 t  s5 d  |% C

) O2 C0 j( s% L6 _7 p% ~3 Qto update-global-reputation-list- h, ^: o6 ~% F; o+ G
let j 0( j+ P& Z. U% S. }/ E3 L4 }+ P
while[j < people]
5 D. z3 X! M% X8 [6 f0 o+ {[2 D, g  r1 b9 j$ C; R9 ^6 h
let new 0( g  [5 P9 z; _  e" M
;;
暂存新的一个全局声誉! g& o7 m! y; X0 d' M2 _
let i 0
# M4 z! f+ h, X$ d9 _let sum-money 0; H* s6 d, m$ V6 }" U$ u
let credibility-money 0
& R/ `; U. j* H( E8 q$ [while [i < people]+ i# n! U+ M* v' t% z/ g6 [
[
3 }* \# d" f) mset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
5 b; h6 _# h- ?- {  ^% wset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
7 n5 x7 r2 _% S. M! ~, b; R/ c) mset i (i + 1)
" ]9 P* x  T4 C  B- K5 Q- n8 u% z]
$ Z% ~6 V% i  N& q+ c+ hlet k 0! L# V2 B& A# a7 N1 o6 L! A
let new1 0
* r( |" r: H/ a& Q  Jwhile [k < people]: W, x- G0 R! ?% X+ W7 R
[8 D: S# T# e/ i, U
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 b7 H, I  |- D, cset k (k + 1)
; w: e  x* J  R. Q; O  o# M$ l]
  P( y1 y0 J5 Q& ^; z8 Jset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
7 B, b% g9 U6 Iset global-reputation-list (replace-item j global-reputation-list new)7 Z- ~+ x: f- W( q* r: o  N
set j (j + 1)
8 ^, n( g- }* @3 r9 z2 d: d+ j]8 Q5 S( @- S. l% k
end8 ^9 `: X& {+ P- }
& G1 H6 Y( F+ J+ V4 t1 Z

% i; Z) N( y# y# b( I% L! o* b- E7 L1 [, P+ `! O2 G7 {
to get-color4 X5 Q8 V) r8 F+ R6 I2 a8 A: b+ X" t  u
+ Z$ e+ ~# h' }1 [  p
set color blue
: P* L8 w3 v$ C0 A5 o
end
5 t+ P: G- \3 i( p
. R+ {) D* r) G; z. nto poll-class
' \2 O4 Z0 i( c# J; G$ u$ send7 s1 l2 z+ Z+ ^! q8 U/ V
) w5 R* V  S! Z8 z; Z1 H' b
to setup-plot1
0 M% M$ o6 J4 ]$ c" I7 N3 o: g% a" B5 c6 H0 x
set-current-plot "Trends-of-Local-reputation"

; ]3 p& U6 y; ?7 {/ N* k
& f. v2 ~/ A6 P. I9 gset-plot-x-range 0 xmax

& b1 g4 v/ G" v0 c- h3 l3 r$ H% l6 [: U6 b2 E! l5 J4 X2 |
set-plot-y-range 0.0 ymax
4 q, e+ F4 b3 R4 L5 {
end9 Q- T! k! K% T. n4 X) a
8 B4 V% ?" W3 F0 B& u
to setup-plot2
8 j7 o5 D; Q! j& [; B
6 ]: O# F8 o8 v  Tset-current-plot "Trends-of-global-reputation"

. o! a" j9 L+ O: C1 S" z4 I0 a8 W+ H/ L. G% w8 F7 ]' g. z: k2 O
set-plot-x-range 0 xmax
5 E7 R9 t' |3 ^, `- A# J
$ N/ C/ X( c8 u5 x* F) z4 C( L
set-plot-y-range 0.0 ymax
2 z. F7 ?3 a/ u$ H# ^% E% n  Z
end
1 s, I9 O3 r( q& ?, k/ U
$ q  b' H! j4 w# Fto setup-plot3
6 I1 N1 L/ v' e3 r" ?$ J3 L' v3 U3 |2 i9 ~! i
set-current-plot "Trends-of-credibility"
/ O) h, r; P4 b& ]' V6 u

6 ]3 I4 @, f9 B$ q5 Iset-plot-x-range 0 xmax

+ c9 Y7 x6 n+ q! Z  _, p- R" }8 w' C- k3 [
set-plot-y-range 0.0 ymax
  ~/ x# |; J9 B8 Q- Z1 S) w! \
end2 j1 R8 q2 A" @

( b/ e* x: H: d+ {4 V# K) j% P- w/ |+ oto do-plots
* X/ {7 i7 a! K- mset-current-plot "Trends-of-Local-reputation"  t& f0 K( A' X; \. z
set-current-plot-pen "Honest service"! L$ J3 k5 k+ X  b3 x0 V
end
% W0 `) J% V5 @2 V9 T, o/ R4 P1 U3 ^/ M5 O# f9 B' k, v
[ 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.1 r# _1 X. }* |, Q" j1 o/ G) @$ W

. W; r0 R* b$ M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, 2026-2-19 04:01 , Processed in 0.029714 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