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: 15969|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 l# a% M# P; s
to do-business
- e2 U- O  v  ? rt random 360$ K5 I) `$ e2 T) G. V* T
fd 1+ g5 y; Q, d( o& @! b6 D, B
ifelse(other turtles-here != nobody)[2 c% `* h: [- }' V' e9 \. ^$ S' O( Z
   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.
; A) S" i3 |3 D   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
' t) B" V" r8 I  R0 |   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
9 Y$ e- E" U/ ]0 u& r0 N0 G% T   set [trade-record-one-len] of self length [trade-record-one] of self
, g6 U+ D; l; l0 `: a3 v   set trade-record-current( list (timer) (random money-upper-limit))
. ]4 j+ N. |+ t% w0 C. F% Z- }+ v; ]% X0 Y. E* |
问题的提示如下:
! B% c) H& Z. P: N, N5 D! G% S& ^8 T3 k) j  ^- q
error while turtle 50 running OF in procedure DO-BUSINESS
* H+ x" f6 f! D" h  called by procedure GO- k) t% U  m/ [7 V$ ~! G. [. P
OF expected input to be a turtle agentset or turtle but got NOBODY instead.' u. }5 ?* s! v4 o% P
(halted running of go)7 @9 k# l, a( z+ H2 P+ R

8 _$ T0 Q. S9 M; |0 Y; 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~~& X9 P" |* Z, |6 Z" ?
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 Y9 \' Q8 I) l/ Dglobals[9 j% B/ q0 `1 D% G
xmax" M) x- Y6 K( g
ymax: j# e7 Q2 R1 f$ w$ c
global-reputation-list
! ^; {1 D1 s8 m& C5 W0 |- A
5 F2 w! ^3 j5 T3 k* Q; n8 E;;
每一个turtle的全局声誉都存在此LIST
5 @7 o3 x: u# }0 \7 S+ s2 E+ _credibility-list8 o% |& K8 C9 H, D2 }
;;
每一个turtle的评价可信度
& h0 h* X% p7 nhonest-service
2 y' R4 D# e% {unhonest-service
3 Q0 K  v- X' L  f6 soscillation( q8 {8 G! Q- ^/ F1 ~1 [  C  c
rand-dynamic
2 l/ ~% [5 W% e9 _* x' g, y' Q]% v9 U, F/ l9 K% O1 f: f: z

- l, Q9 T+ b0 x; N0 z) v+ `turtles-own[
! F3 ~; D/ c% ]1 U5 y8 G5 a9 mtrade-record-all( B% ]. S# v& w0 o9 L4 w& X
;;a list of lists,
trade-record-one组成3 T, w. I+ ?5 o* y, p) @6 L2 q
trade-record-one& N9 ]& q4 `7 E( _! v; }
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录! l. `% ]) r; e4 \6 X0 L

) Q* v7 K6 [3 I# l3 C;;[
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]]
; @- C" p) b3 u* ^% _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]
- `6 o9 |" r' O6 ocredibility-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. o% ~; `/ F9 f2 C( `
neighbor-total
! D. V8 D  S' x;;
记录该turtle的邻居节点的数目/ i5 \, O- h; `
trade-time6 m+ P" x& k5 \
;;
当前发生交易的turtle的交易时间
! ~+ o  m- ]% s5 E4 i, @1 z- nappraise-give' s/ h* G/ ^3 E# {3 ~, {
;;
当前发生交易时给出的评价
! y4 o8 K  x1 |# Eappraise-receive
( g. U) ^1 z/ ~  u6 F5 H;;
当前发生交易时收到的评价, F7 U3 v# y7 ^$ Y: W
appraise-time$ X& [! ?/ e" _! t8 E* n0 Y4 H; k
;;
当前发生交易时的评价时间
/ H; \9 J* R. H0 ^local-reputation-now;;此次交易后相对于对方turtle的局部声誉
2 d% A: X+ |6 `$ l& ctrade-times-total
7 r' v: S. Q, }1 D. ]: |' @, C( Z9 Z;;
与当前turtle的交易总次数
) }2 W! R+ e, P9 A0 [5 qtrade-money-total+ h* T/ z0 X  q$ ?( a( L. ^5 T* P1 p
;;
与当前turtle的交易总金额: k/ L6 ?2 i& ]+ ^  B
local-reputation
1 l$ F3 T/ s' K- k9 K0 U. L( C3 Pglobal-reputation
* V- G7 C) k& E: g& e+ wcredibility
* K5 l, j3 S  k9 T;;
评价可信度,每次交易后都需要更新
2 Q3 J" r+ |# I+ i/ x7 lcredibility-all; K! c; G8 r- [' u2 e
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据3 J/ L) H  {6 X, A- H, k3 n* t

, e, c* b9 ~+ H! z;;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: g5 W; s4 K* X7 D3 k, [9 U$ ?
credibility-one2 u* t, c9 c7 a. ^9 p6 d0 ]# A+ d
;;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people0 \3 @1 ~% m% _/ H1 l: e
global-proportion: D; T& S1 ?7 D$ u: w& ~- C
customer
( F3 l5 e& X% Wcustomer-no2 K  L6 P, |8 z$ o. f- ]5 g0 M
trust-ok7 B6 t* b; A$ c: b8 w* [) \! o
trade-record-one-len;;trade-record-one的长度
- p" Z# s" A9 S]+ W6 x& v; h' L+ X$ A  |1 g- ^1 S
2 G2 S7 s  K6 Y0 g7 t% B6 O  t
;;setup procedure. J9 h7 ~" y  q' i
- ?! [0 p2 O9 ?  r, H( C5 ]
to setup6 F7 U: l* d1 v+ F+ ^# K0 `2 ], M
5 x" p" d( g! p
ca

8 X2 V# M9 b. P$ Z, j6 Q# D! e$ Y/ F! |
initialize-settings

/ ]8 p, X9 }" r! B' B+ L' d7 ?5 m- C0 B6 g
crt people [setup-turtles]
9 t- `, ]. B! p( i6 L

' `0 q1 q3 f; h- j1 S, A# Q9 b( V0 o' `reset-timer
2 w. Q! `& ~0 `. _

+ S+ d2 L% [7 q/ a: B* A8 `  bpoll-class

! E5 X- D3 d0 K& b) t( j4 V
% ~4 V( U+ y9 c# C2 e/ ]setup-plots
% Z6 e. q0 }' e

2 }" ?# Z( Z' k+ {! ado-plots
8 W" f; P  `3 M: M2 J4 i
end% x* @2 J. ^* p5 V: [5 n6 T5 H
3 ~: T( |9 ^( ]/ ?
to initialize-settings2 j8 o7 ?) ?- }7 @  @% g

7 i0 q/ ?  ]- l5 p! h- A, Yset global-reputation-list []

8 B; I: Z$ f  M2 q9 A: n8 ?* K6 V0 g& P( S
set credibility-list n-values people [0.5]

" m& |2 p7 E" P: s, k- @% K% e+ d% ~8 E% l" H$ R  B* z3 ^
set honest-service 0

0 B4 s# _9 B+ b  j+ g2 z  ?: ~) {5 _3 H+ I  u1 y1 a, u
set unhonest-service 0
- d" J, o" B/ B' |

- e2 E) }! U7 s, W3 t; S: Gset oscillation 0

8 K3 e% Q# B; D" |/ a% I9 f' w
" S3 m& I' j% Z5 Wset rand-dynamic 0
& R- J  E7 j# Z, ^
end) D* p% b  X' O6 I( V

3 v8 t1 _! h$ Z- Q' v- c0 E" jto setup-turtles 2 ?% w5 H. b, c  R' f
set shape "person"- [: @3 G2 B$ \" t1 S8 \& _8 |0 m- N
setxy random-xcor random-ycor
8 b; b+ i* ]1 Q$ x% n7 R& iset trade-record-one []
. R+ F5 |) Y2 T8 d4 t' N

5 U1 X8 r6 p# ^  f  h0 Hset trade-record-all n-values people [(list (? + 1) 0 0)]
# U( q% L" k; A( Y4 q

, q+ \/ \5 @- Yset trade-record-current []5 a; N; h5 A5 a1 B0 ]1 c! q! a
set credibility-receive []
0 N: B" U% P0 R( w" T- ]+ R$ Gset local-reputation 0.5
& Z* R9 f+ }% ]  F1 nset neighbor-total 0
/ F/ G$ a0 p1 B8 O* uset trade-times-total 0
8 R+ q) O3 Z& R0 J3 Hset trade-money-total 0
0 h( Z6 f7 Z- }8 G7 v' R3 qset customer nobody
1 c( R0 [, Y% G* lset credibility-all n-values people [creat-credibility]
# N! b5 x# I3 D3 l, N! w, b- }set credibility n-values people [-1]# G0 I! {6 s% G3 [  `
get-color8 }9 M) s, _- {/ Y9 z7 [2 d
+ k) s4 M1 X! i) X1 u2 \: w
end
2 G* ~' I- u: P+ Z% y0 J" h$ x* @! [; h
to-report creat-credibility4 D1 a' q6 C4 P) S4 g, x
report n-values people [0.5]( K3 m2 N7 w4 B( q9 W0 F
end
: v9 ^- H! {. Z& u  W
, A5 r/ {+ a5 z3 S# V$ jto setup-plots  i# G2 X6 O1 P5 |5 a) K' ~  G; A
0 s+ E$ k1 M. a# K+ L0 `1 |
set xmax 30

) R7 ]& V8 s4 b' o: s2 Y0 _& ^3 N) ~) J' ^$ _: q
set ymax 1.0
/ j+ a% \. [$ V) q0 L3 ?; r! y

8 f* Q  }6 Q. v4 Y8 oclear-all-plots

' X$ D& P6 H$ x) b) N3 F; p2 `2 p2 ~, \- k! v
setup-plot1
' X6 s: x: e1 V5 V5 V: p5 g' l

+ R) k4 i# |% h3 _setup-plot2

  {5 ?) M5 r) W8 X1 K: m0 f( X& M
# _: U' j" _$ r( q9 a. L) `; Ssetup-plot3
9 Q' a5 j; F5 N* T
end
4 B1 T3 H& {1 m. q; S2 g0 |
5 Y" f( T& ~. w  ?( S% ?. \1 ?;;run time procedures
/ f; `/ i$ d: @- |# M' O
. x6 k9 I6 B- g4 f3 F! n# jto go- ^6 ]* M* u8 b* U- s
0 R# A6 W$ U% T1 t; p
ask turtles [do-business]

. x5 i  g+ n1 P) }9 mend
& o* b5 |3 h  ^7 M0 |& G7 K% R7 J4 l* v) ]
to do-business
) M6 Z' v6 n6 i7 X0 J
. G, ^. c$ r& y( n' ~
! {  C% \7 W  ?' o. [8 @, C8 o
rt random 360

& E+ P  ]" U! c- \7 X  U/ A* K# F$ U! v# h5 h# l! A" Q
fd 1
5 J7 O" O% T. E

( N/ l+ z2 @$ M- ]ifelse(other turtles-here != nobody)[
1 n; L7 P* {3 x

. @, z0 N% S3 h- Eset customer one-of other turtles-here
: g6 i7 N; H& J+ p
+ v: \9 @  b- a) I; {7 \% q
;; set [customer] of customer myself
% Y& y; L" V4 t( `* H: f

$ e" Y( u7 X0 @) C; Oset [trade-record-one] of self item (([who] of customer) - 1)' o4 t; F/ n6 d
[trade-record-all]of self
6 U; V( Y- E+ p8 b7 s# Z4 Z;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

6 S5 I/ I' N) ~* S" o! b
6 R% b; F& N8 Z: I7 b0 Y1 \  bset [trade-record-one] of customer item (([who] of self) - 1)
5 d5 V( D2 [- @% R, x[trade-record-all]of customer

2 o. @# \6 q$ ^8 S
# `7 H3 ^% z+ r0 E. sset [trade-record-one-len] of self length [trade-record-one] of self

# |: E% l4 O% [) X: W4 _3 ]! l! u5 H* p9 z8 d8 P  ]  k. A8 {/ S% ?
set trade-record-current( list (timer) (random money-upper-limit))
9 k8 ~* V$ |$ v

4 ?$ e7 F! J9 M- B& A  xask self [do-trust]1 F, R8 K1 ]+ w0 E7 W* w5 c
;;
先求ij的信任度
* S, Y* O5 a/ {6 x+ p' L
3 h  m3 [* e( }$ o& lif ([trust-ok] of self)
& o! w2 ~) H: e5 O;;
根据ij的信任度来决定是否与j进行交易[
* K! _& B; o' X' s% u, Yask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself' O5 ]( D5 J. \4 S
3 R; r7 `( ?( |  ~6 K+ }9 F! U9 C- V
[
+ G! h, ^$ s% D
  @0 A( |) R# H& _: t, e( O0 D/ Q
do-trade

8 n% @. D) E+ u/ \$ y6 X
* J1 J' M6 r' Y9 [# ?6 @8 B2 supdate-credibility-ijl

3 f1 J/ b/ M3 ?# j
6 H, m7 I' X: i9 Fupdate-credibility-list  @2 \# h5 Z$ f( R+ i* s
* s* t* m. D$ a

* n+ N8 X0 q8 x3 E; f+ cupdate-global-reputation-list
! ^( T; l  N" e( E7 Z* T
- t8 R' h/ S/ Z: ^& ?
poll-class
3 ^  U$ r% X, J# X1 s7 t1 V0 J
& K8 L% W" ]8 S: m7 A4 B
get-color
' r. R9 A+ f2 ]' ^1 c, p
+ L- X% h3 R, f) H  |) C7 ?
]]
, A! |5 W8 ^6 Z  _
+ {6 h& [4 ?/ W  E+ r9 V8 g;;
如果所得的信任度满足条件,则进行交易
- ~, G' Q7 A; s' A) I
- h. A. P: U' M[

- I& b- T' r1 s1 v' z
, D. u; b4 o( a- U% Brt random 360

  P3 V5 q$ I& y& P4 t
2 Z: k2 U) q* V1 B# ]" zfd 1
; C/ H9 [! W& C
. G2 Q4 V# n( b3 o% I; K( o
]
9 a8 ]' A3 M/ k5 ]  J
! ^6 f3 c' J6 D5 v  A8 a
end

3 m9 C6 b( l! y3 X% v+ q
9 b! x9 w' S( F3 U9 |; x: Y, }- wto do-trust 9 L! o. C* p8 l$ h
set trust-ok False
% ?( _0 y- X( x; ]. |3 M1 ~; Q+ j6 h$ v7 [/ |7 {
9 _: t" o6 ], `) S
let max-trade-times 0$ T5 s, }, u$ p/ C
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]3 L" d5 V" |8 y# l& _5 ?! P
let max-trade-money 0
1 g' V8 Y7 S" c# Oforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
# d1 ^/ U3 X$ i- Flet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
; }3 c0 H* ?- }1 p/ ^3 S; ]: o5 d$ f) v1 Q9 B
; ~' h$ [/ v& {( t% Y+ t5 q* s
get-global-proportion
4 _1 y, k8 {8 Zlet trust-value$ {  r/ r: k, z, p  }* i& m
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)

; V2 D7 y1 N8 _/ |) v* q  L1 B# zif(trust-value > trade-trust-value)
1 _$ f, Z7 `! e' L* ?$ U[set trust-ok true]6 N) [- H& U8 L) ^5 b! b  X
end
! a& A5 {, U5 N( u" V4 F: _- a9 R. p% {# A7 x) o& F
to get-global-proportion8 D4 I* K) x( e! C+ [# x" E
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
* \+ c6 ]' p0 W! B  W[set global-proportion 0]# l+ f( i4 _* [, T! z, b8 [
[let i 0
# N' I/ o, L3 b. llet sum-money 0
! M& P' o; S0 E* R1 I4 J3 m- v5 Ewhile[ i < people]
) f8 X, v0 `0 X; E7 l' ]6 p[  j) P4 y/ a' q5 }! k
if( length (item i
% y0 |& W/ X9 V" _[trade-record-all] of customer) > 3 )
1 P" z# F, K0 S4 u( F
[" H( l3 ]* i2 J/ u- I: V
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))) |. ]8 K( B8 e
]
/ _8 {2 J. s# q& f* L]; v3 P4 ~5 C$ U; o! `
let j 0
' I# j0 ~8 _4 M+ Q5 z3 o0 F% Xlet note 0; f  e. z: [* g6 R
while[ j < people]" q- O8 b  `7 ^  Y5 `
[
6 j* X" W5 N' Q3 T5 ~" D! t0 g* Dif( length (item i' `" ]; s3 U9 N- G& t7 p
[trade-record-all] of customer) > 3 )
3 A2 v. [( e2 }" t
[- h2 I# y2 M6 J
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
, I  p8 \9 t# l+ o$ f. Q1 i[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
! L% T! s. a( w, p1 n; G+ w: L[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]  ~! K# {& w9 d
]
, D1 F( L- P4 D* Z% \6 w]
" x2 w- ?0 N0 B0 _( N4 x$ W% |& Tset global-proportion note
* |# U8 d$ q$ \! U2 P9 B, q3 r]
# S0 q5 y4 c0 w2 xend
/ ~, E. X+ a2 ^( G/ V: D; o& d8 B' ]( ~, T4 W8 R
to do-trade
0 E2 Q" g& L' k- B" E;;
这个过程实际上是给双方作出评价的过程
& f7 y: ]# ~, i, q2 Pset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价' O& W  x% |: s$ I! R3 ?1 \, F
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
$ a2 }! z5 |+ D3 Z: U1 i  Sset trade-record-current lput(timer) trade-record-current; \2 c3 d) E0 f) x( n3 i
;;
评价时间
* ~4 |! k: [+ ^2 J4 uask myself [
. C8 U' I/ _* u+ T5 ~update-local-reputation
: T, {) h% p# d5 Rset trade-record-current lput([local-reputation] of myself) trade-record-current' o  R0 B% }. K# L1 @( l2 ~2 ~
]
1 x0 P  O2 F& {3 Iset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
' n' P* R; _* c  z;;
将此次交易的记录加入到trade-record-one
7 T( x1 ~: y1 J- a1 R" iset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)# K* I" |8 ~- R% \- g
let note (item 2 trade-record-current )/ @/ j8 V! B* f3 n: z- ~, M% {1 E+ Y! ]
set trade-record-current
9 w3 y2 Z. p. p- _8 g) l# Q(replace-item 2 trade-record-current (item 3 trade-record-current))

1 }7 w2 b$ \* F1 tset trade-record-current# z8 [3 L0 j) B
(replace-item 3 trade-record-current note)5 b3 T  W7 R5 |7 w1 Q) g

: F* u: N. G) e7 O
+ B0 M" E. l5 F7 t0 S
ask customer [
! _7 e9 ], u% o- Qupdate-local-reputation
" k5 J& Z. ?1 i3 Mset trade-record-current
& H4 t9 y" ?7 k2 e. x; X# P(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
9 b. w$ _4 G* ^! v1 n" G5 l
]
; E9 J* ?- c- B+ i  o* v8 m9 J
) o: ]- ^! U8 k' Z+ `# V
3 {- z' Z: J1 r! ^
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer) j/ X5 e: e7 m; f. U

, F8 W+ V$ Q, ~set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
+ N; L3 ^; u- c. i;;
将此次交易的记录加入到customertrade-record-all
; |! G: K+ B6 _+ W& n0 R$ X( L9 uend
; u& l2 D$ ]! i5 u% I
& N# E" r/ d/ i2 |* ato update-local-reputation' {& M$ D5 o; ]8 \+ K6 H' u
set [trade-record-one-len] of myself length [trade-record-one] of myself
' p( R1 f0 A7 b( \& o* S) j
) a( X  C# `. I/ V6 b6 r; V, y* t* M! P% e
;;if [trade-record-one-len] of myself > 3
1 p8 C+ @& X0 J; a: D, n4 ]8 K
update-neighbor-total
2 c/ b5 z) u  @  Q1 s1 m;;
更新邻居节点的数目,在此进行
  f  o. R5 [: k' N7 Llet i 32 u" r( t& @/ w& h( h: q4 R
let sum-time 0
3 t2 x8 |" i! r1 |! J1 pwhile[i < [trade-record-one-len] of myself]
# G" G) }  ^1 q: {[/ B/ i7 {6 g* X; Z. D* D; \
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )' w6 [/ I1 U" U+ g$ r
set i
. T: d6 d* w( G! I# S. h2 U) D" ^( i + 1)

* X6 Q4 ~. g. d' X7 w], x- q, J2 _+ }1 G$ A6 @9 m. H* G
let j 3
3 [' s1 R4 b2 j$ J( `let sum-money 0+ e: S: i+ }7 {5 T9 S# R( w4 D0 w& q
while[j < [trade-record-one-len] of myself]
. e0 r7 F+ l  `0 y[
3 j* c, V' i2 z0 j  w( ~6 Nset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
2 e( }% l+ w) U% ?8 P' c) [  q6 {set j
7 x* c, l4 U2 ?7 n1 A- `+ w- Z/ P% E( j + 1)
- M; @: N& K( C1 ?) X( ^
]: b9 x; f* |; |# G3 u$ S0 o1 y
let k 3' W/ s7 u2 L* H
let power 0
6 O/ j) g) i1 ?9 \let local 0- s! E; I+ W0 L  Q- h
while [k <[trade-record-one-len] of myself]# _- y1 @9 p$ N8 m' \* z* D
[/ ?4 o  Q, L# a5 ~, n
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)
7 d4 u, r/ w5 _+ s; iset k (k + 1)
3 ~9 C2 U+ V( W7 j5 @]! ^6 B3 j* M# F" f: m
set [local-reputation] of myself (local)
4 w5 M, F6 o' x/ l( L& send! d. d4 `3 o# u6 Z, A+ ~
. T% l- W0 r6 Q+ |
to update-neighbor-total
1 m# R& g6 Q" n5 C0 p/ b- ~0 C2 Y' T. ]
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
8 Y! B% d9 O6 R( S" K6 z) B
4 i3 S; `1 M' ~3 `) _8 @
% c/ Y5 W# Q! S/ J0 Y9 W
end
* p" e% Z% N$ @/ x- C' f  r8 z4 G4 ~8 S
to update-credibility-ijl 5 @+ G' V! k- }+ L& [

3 W1 D  y" B4 C# L' n% Z3 t: v' G;;
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。* x3 A( |3 d4 D# p1 p( W  ~
let l 0
5 w, U8 K2 H4 C$ R/ O- |5 Owhile[ l < people ]
& M, ~$ |5 b, j; v1 v# t  t" s9 {0 F2 H;;
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
" J3 R+ Y% u& J  l4 M[7 R" x% _! a* U7 T. {2 D  m) F9 S
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
2 s; x/ i/ O$ g! c3 x" Uif (trade-record-one-j-l-len > 3)7 s# U) L* @( U1 m! D0 r$ W5 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! }& t0 V, b6 X, T$ X
let i 3# l  L' c" L3 A  Y
let sum-time 0
5 ?2 G7 F( S# h3 t3 P! z/ Vwhile[i < trade-record-one-len]  M8 ~0 ]2 h8 g6 L% S- d+ A
[
2 g/ [6 t) }1 E$ n# H' G. z& hset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )1 @7 @' \' t# d; u; T
set i
7 i" F3 S0 x+ N( i + 1)

  n5 N- s+ p" o# A6 E& U- V6 T]
/ u& o  C2 E& O# glet credibility-i-j-l 0" O7 A% C0 z; Q* o
;;i
评价(jjl的评价)# V& \) ^) i) o1 i7 s
let j 3
; ^( f+ ]% Y% |9 M0 Glet k 4! n. G5 h5 j3 q
while[j < trade-record-one-len]9 C( I' i7 r9 U& E1 s; [: W7 P
[4 M+ n  H7 ^7 Y1 O
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& e/ W1 b7 q: X! v5 N" D4 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)# p: |7 J8 H2 t! {
set j: k, F; p/ W  i8 L$ A9 X
( j + 1)

% g3 [: N5 s7 x+ n# U9 L]" P) Q7 F8 Z) I6 J+ F' C& j
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 ))1 D6 ]' J; F& t

: r5 t8 X% i' [! g
* b2 g: v% ?9 D  \; m2 ~/ M7 `
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)). y2 {" v9 o! a
;;
及时更新il的评价质量的评价5 G; I6 o+ S) D$ S$ V
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
% I# t4 U6 n8 d) J9 b4 yset l (l + 1)
/ }- `4 B3 `& t( r. m]0 |% D+ U  i* f& P
end# \( `# ~- ^9 r4 ~- d- ~

4 J( w/ s1 e1 a/ p) b: Tto update-credibility-list
8 z$ j1 L. x  D* _$ Jlet i 0
$ c+ o1 W9 ]6 t0 k/ |, ]2 gwhile[i < people]
* s( |" M. e# c( N[+ C- ^4 ]3 d! p4 [$ H
let j 0
, c$ L5 T/ F" xlet note 0: o1 W  v3 r1 j! l7 e
let k 0
% B0 X. p9 t4 x8 v; Q;;
计作出过评价的邻居节点的数目# f" }' `' l+ x! p0 b' a1 {
while[j < people]
, e1 w' Y5 n9 G* h* i[
% d, C6 s2 M  Qif (item j( [credibility] of turtle (i + 1)) != -1)% q% J& i( F: u, g" P' Y, X7 \
;;
判断是否给本turtle的评价质量做出过评价的节点
' ], u" A7 U5 H- m6 ^5 |( G' _. o[set note (note + item j ([credibility]of turtle (i + 1)))# k/ ~  a$ g" Z6 e. f* s$ s6 _+ k) F2 i" F
;;*(exp (-(people - 2)))/(people - 2))]
- [1 N2 o: n4 J& m- e5 R
set k (k + 1)) ~- i7 Z" n! f( C
]+ N2 j5 u0 k0 g8 q5 t
set j (j + 1)* b/ l! b: m% r$ Z; b3 ~' u/ |# j
]+ g( q5 T' F+ s( X2 N
set note (note *(exp (- (1 / k)))/ k)
" {4 r" i* Q1 P/ s- B% @set credibility-list (replace-item i credibility-list note)
) |# V# L* {0 d- ], s* oset i (i + 1)5 ?- l( ~# q9 Z
]
' ]' b/ n. O+ {4 P1 m# n0 ?end
4 b! R( e  Q& ~4 a% C' c  s; a$ e* w2 u  ^
to update-global-reputation-list
* ~& O1 k7 w, o$ R, |$ ulet j 07 w  U" S" m0 M5 U
while[j < people]$ S" k0 J5 T0 S5 j4 A" J
[6 T. O. O; v% ~
let new 06 J+ B9 u" {6 y: p- R- I$ d
;;
暂存新的一个全局声誉  E( L# L* v* G8 X* }
let i 0% X1 p; \+ G- l2 z( Q0 U- }' w
let sum-money 0
. x- l0 H7 }' @8 n  `. P4 plet credibility-money 0
2 x# G) g' L6 Mwhile [i < people]
6 u# }* J$ L% j7 j& W[
) F/ `6 @: f& H1 F* z" N9 {set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
  Z* J: ~2 Y4 l( gset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
3 E6 x. F1 w7 M' t( f1 Eset i (i + 1)' j& G! \6 N2 d; a; r, x! ^
]
* _8 k! [/ c8 m: hlet k 09 m7 G# a) W" ^/ `
let new1 0. c, y* N( z/ K/ p
while [k < people]$ S1 b" Y; M- t& `, x9 V/ N4 h! Z
[
' g' c0 t0 B' I/ \5 H8 Yset 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). |% ^4 g" Q% }; D4 t
set k (k + 1)
: I9 }: m% {9 z( H]" ], d4 |; o# V  f6 Y6 r6 |0 C
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
; |& P& U0 V/ ]) D8 Uset global-reputation-list (replace-item j global-reputation-list new)/ Z1 K# A8 D' U: V- F9 w4 ], r
set j (j + 1)0 a9 K8 N+ [6 }9 q# ]& n
]
1 U3 g4 }% T  l* X) lend
2 P; {/ u! f3 I# [* O0 S# x5 s) j" w& a8 y7 ?& ~; j
& u5 Z, K, \3 v: y: z2 \
- y6 a' D, i5 i& w
to get-color
" ^, j$ S3 c4 n/ _+ I$ Y! B/ X, u( W2 ~3 H+ T
set color blue

" y) X. Q8 V9 A) Mend. _2 ~" Y. {# P4 ^- ^

# u/ K+ ~7 U7 jto poll-class
( h5 j  G7 t2 I7 T, i) b2 C# J, yend( s! o" d, w  r% V7 p+ N9 Y: v. X+ `' T2 N
) E5 _. b) U2 o
to setup-plot1; U0 h/ j" T) i* ^. S
0 L- p* z7 I% L) ?- q% G
set-current-plot "Trends-of-Local-reputation"

7 `2 \% c6 g2 T- B4 ?4 a: `) S5 |( V
set-plot-x-range 0 xmax
& u1 Z. r% v* _3 F2 r3 |5 `: t2 Y
+ g( Y9 v2 V8 R0 G  R/ F' {! j
set-plot-y-range 0.0 ymax

& C( w, i& s) C0 x( M7 tend$ R6 j9 X4 P! D

  R* Y8 Q8 K& y7 m, p" A1 vto setup-plot2
# a! c4 ?: d5 X% U- M$ E1 m0 w) e7 V9 y% Q4 J7 {$ d
set-current-plot "Trends-of-global-reputation"
. t) M8 |* s0 H
0 `+ H0 Y- d" u% J
set-plot-x-range 0 xmax

, p7 M2 ?' U+ O7 w- H& w4 {2 \' L4 I
set-plot-y-range 0.0 ymax

0 J: Z( w. U* g' j2 x- kend" ]/ j' f' d' l  P& Y) Z% B

3 o$ q$ _: i0 u: {. V& }6 V2 g% Cto setup-plot3  P! C; L! N3 I) F3 A, S( R

# V- b' T* t; P, k3 c% ^' ]set-current-plot "Trends-of-credibility"

/ h; X+ C: h1 Z, m+ A3 D- |
8 [: L8 u0 c/ @& O+ J" eset-plot-x-range 0 xmax
! K7 b" M  U( H3 I) ?0 s

+ r7 M' o$ |5 S% \set-plot-y-range 0.0 ymax

2 x$ E1 w6 q8 y- e' `1 ]end# L# _* U% I3 ]4 D- C9 g
- B0 X; @# m; i6 i; P  C* a
to do-plots
% J5 _( `( i8 K  @( `: z7 Wset-current-plot "Trends-of-Local-reputation"* L, A- c5 o  V# L
set-current-plot-pen "Honest service"" z" _9 V6 Q" i- N5 i& E" c+ D
end
6 W) |" f2 l. d& ]/ J# U* W# k$ \  ]2 p. f- F7 D, T7 `
[ 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.5 D7 \1 Z) m0 y& y: d6 v! a* K$ Z
7 H# O0 l, w1 q( s! k+ m$ F& P9 b
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, 2026-7-1 13:27 , Processed in 0.018441 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