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: 11978|回复: 10

[交流] 关于turtle的使用问题

  [复制链接]
发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
8 [1 n) Q+ T  @: {" Ato do-business
, ~, z' h: J4 x- x rt random 360
. J) t4 f- w$ B* V, f. I6 B fd 1
. W* P4 R0 {) c& L* ^1 L ifelse(other turtles-here != nobody)[
) x6 ^8 M1 T0 x. E5 }( y; d% E* v8 T   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.1 M1 ^$ k& b4 p- g* G
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    - l7 U; \$ v8 j& V/ \
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer2 e# o4 D7 h' v  i7 D$ Q& z: W
   set [trade-record-one-len] of self length [trade-record-one] of self
$ l6 E, E8 b/ ]- N$ L' @   set trade-record-current( list (timer) (random money-upper-limit))2 S( W' z2 N# z# W" Z9 o

; Z# t- {# C, l+ E) Q/ y" z3 z问题的提示如下:1 S- A! t, m. F- Z3 a

$ A3 p: Q1 I  g, Merror while turtle 50 running OF in procedure DO-BUSINESS
8 L% v% Q! H% y! Z8 s4 L/ M$ f  called by procedure GO
1 ]( E, p  w$ K' N5 U, tOF expected input to be a turtle agentset or turtle but got NOBODY instead.
8 p+ {' |9 `! P; s! P, n) o
(halted running of go)
( x! g! D- b3 ]! F
5 q* c- t- ~1 N- d# J7 [& h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~~
0 _( H+ M( I% X9 @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
8 X% K6 p2 y9 x( w3 Y' Cglobals[
5 T7 I1 ~% h  y! o* t" Rxmax7 p6 G9 H3 s" b8 e, ~
ymax! H" Q5 f) K* K: E: i4 _
global-reputation-list. g2 }; N* V6 P: ^* U/ {) e4 w: F1 C

% w" s# V; F& S" x0 w, Y;;
每一个turtle的全局声誉都存在此LIST: V- G6 E8 @  Y4 }- z
credibility-list8 K5 L0 ~! R8 `) T  ^' W
;;
每一个turtle的评价可信度
! n2 ~, f: r- o, G2 M; qhonest-service
. b4 `) e0 Y( ~4 K% S; D: X5 bunhonest-service
8 F4 N3 }/ q4 n0 [oscillation
+ m+ N. x0 ]6 b% arand-dynamic: B) Z. h4 E2 ]
]
" g' K- R( A$ |' @8 t9 R( z1 D' B2 h& J- |
turtles-own[
$ J; ]3 n4 q" o6 y6 l$ Ttrade-record-all
. j2 _: _2 {( e# T& |;;a list of lists,
trade-record-one组成# t* }7 O* ?! L6 _
trade-record-one) d3 u9 B! a' e% a
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
  Q* R$ Y; [# ^' R7 {
4 F# w% o4 S& ?: z/ e# U;;[
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]]
+ k/ B  U8 O- Atrade-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]
7 ?9 _. ]1 I( `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
; a! V+ U1 S) ]: h( M/ Wneighbor-total. @7 V' y5 a: v
;;
记录该turtle的邻居节点的数目7 W9 ?6 t8 Q; Z
trade-time& I) a4 G( C4 R: m, i
;;
当前发生交易的turtle的交易时间
/ g0 v8 |9 O: f4 v9 Vappraise-give
8 R9 k2 n4 U/ A0 G! i% C2 ^;;
当前发生交易时给出的评价
, `/ E& U9 v8 r0 a. b7 U: @appraise-receive. k) w7 Y% U) m
;;
当前发生交易时收到的评价
4 b8 @  S$ k* S& k. _0 Yappraise-time) b& W( c5 d8 Q$ _; c6 a6 C
;;
当前发生交易时的评价时间
8 Z4 w- N+ A# ~5 l- m# _; Zlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉' Y* C. T: @2 [% j$ {
trade-times-total+ c7 Q, C  l% Q- O
;;
与当前turtle的交易总次数" _) U) h# X% W+ k9 S
trade-money-total
* G- `$ T8 z0 F: w) {  X/ @2 ~; A;;
与当前turtle的交易总金额
- {" I' X1 j+ h( I/ hlocal-reputation
- r& k- N: N  O% }- I. oglobal-reputation
! s  D7 M7 x  O9 i& ?0 \. }9 Fcredibility
! ?. O/ R5 H2 u) @; s1 F;;
评价可信度,每次交易后都需要更新
# X! [6 O) E- w3 _& Jcredibility-all; P( Y/ N) |$ u7 x2 c* U- A& V/ ?
;;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
  g3 E% F$ N( L. S: b! ]7 |* p- c+ i* I3 L1 ?( [" j
;;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 n9 C1 {( u* o: Q/ ~
credibility-one/ q! c8 G9 n+ [, u% P0 x
;;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
4 x- F1 \- C6 k- h/ J* dglobal-proportion& Y9 f, U) @6 J8 N
customer
5 c/ k3 M" Y' T4 Mcustomer-no
; Z% ^5 F! k0 _3 _' y' f3 Ctrust-ok
. d8 K* q* M* p1 Q0 m" Xtrade-record-one-len;;trade-record-one的长度
" y3 h7 M4 w( J]
' R4 E6 ]  `# O" Z6 R4 |+ R0 @1 W- e7 @* g0 z; i& s9 y
;;setup procedure: F  ~: s( L) R) {2 @( P) ~+ w; m
# C) L$ \& U( q9 D
to setup
, q# Y2 U; c# D7 A+ z7 ~. J# M" d" @$ z0 q+ y& @
ca

7 I$ @2 E2 [% w( i/ H. `6 H9 ]% Z% c! C# _) Y) Y: j2 E: h0 {
initialize-settings

! @8 W( i. c, |- M. k" j% ?. G! o8 ?$ J5 v  [1 p/ p
crt people [setup-turtles]

! p# M0 |* O: `2 N9 U
7 O0 x4 \" l2 ]6 G4 `. T$ {reset-timer
0 z! c6 H$ x3 w- N
& ~7 ?- z" |/ |( t$ {
poll-class

3 V. s4 m4 z# d5 P2 J- j+ Y( }# c- S( ?; e6 [' `+ a
setup-plots

5 p' ]1 O3 @; K+ H! j
8 \( z" \9 T$ h* ~do-plots

! G" I8 C  q8 j* ^7 J# p% n( t( j3 uend8 s" o! O2 T( g- I9 g

; H6 R  {& |8 _$ d/ _, F! g5 p' `  \5 j  Eto initialize-settings! }7 t  X5 n3 l( A- S6 Y
7 `3 z+ a, m; K3 f8 p# O/ [
set global-reputation-list []
5 r& f( R: f0 S2 ?

  ^" \2 i/ v' Z' n8 `' Kset credibility-list n-values people [0.5]
" g- \1 H! |5 s9 [  {  A

% c! H; S, V, rset honest-service 0
' ~, ]  p$ z6 ~( @+ ?' p6 M

- b6 d4 s- o* t! ^& v7 }! u# N7 Wset unhonest-service 0
' ]% O! @1 ?/ m! C# b& D
9 w- g. F& R' Y
set oscillation 0
) ~  G$ z9 q5 ]+ c. B5 S: h- s

- _" x, m4 ]; @( s, o8 C3 E* uset rand-dynamic 0
# P+ S& Q1 v9 V  R/ l$ N
end
/ B( K8 }8 R5 x& g3 P4 n/ @  g5 P% Z3 C
to setup-turtles
* b1 t: {6 t# r% n8 A( e4 Aset shape "person"1 o# u5 ^& ]8 k. w) B
setxy random-xcor random-ycor% y, v% k8 _2 j8 N; S% M
set trade-record-one []
7 i0 @7 G6 y* ^7 J
2 r$ M1 d/ u/ W! y
set trade-record-all n-values people [(list (? + 1) 0 0)]
" ~) d. ^6 _, G

) X+ u8 _4 R+ R; D0 j& pset trade-record-current []
% i) o8 x0 x2 c$ \. K! z0 Vset credibility-receive []# t- J4 Q$ d" u) w3 V* d
set local-reputation 0.5
6 Y" t0 o, ]9 n: rset neighbor-total 07 `+ k# ]7 c: O, a+ O
set trade-times-total 0
4 ^1 g, y  p0 p% A* {9 {set trade-money-total 0
% u8 }' [( u2 @2 T2 Q# a/ N  `set customer nobody; t6 L) F' w- N: Z, J
set credibility-all n-values people [creat-credibility]* q+ Y5 u) E, {. B3 d
set credibility n-values people [-1]. Z7 B0 E& k+ T0 v; M! b( k7 D, Z
get-color
/ P$ ?( Q! b  u; i% _0 p' s& T3 D( B
1 F0 u: b# D4 N
end
1 N( b/ D$ i- S: @' Q/ b% u
. I1 L3 B; e( ~* xto-report creat-credibility
+ q+ k5 e, D5 E& k3 l" L+ breport n-values people [0.5]
( F! q" f$ Z8 [3 F4 l# m, lend# a' O7 ^, ?( V* I

! ^  a4 [; k7 ]9 j* s5 @* r& Uto setup-plots
6 j" p) {6 Z* G. b+ j+ a: m3 w; c) c7 z4 L4 x5 s3 n
set xmax 30

/ w2 x5 d3 A+ _
) F. l# _8 {- C; T$ eset ymax 1.0

3 g& X0 I" R( v9 b# k
* _; ~/ m  A" l5 Vclear-all-plots
# S# Q: H8 t' @. k

& P% [, H% L* b' |: H, |9 dsetup-plot1
% K& t$ x2 T  E- A1 B  ^
# ]" {9 w" m4 \7 m' Q9 z2 `1 ]5 F
setup-plot2
' z/ n& B2 t: p, y2 U" m

( s6 t( N$ N8 p6 k! X# e0 b1 F; N# \setup-plot3
6 y6 l2 `0 B1 s6 n
end
2 ^, ^' W) N+ d% m/ f' z/ D( O- [' b1 K' O; ]' X; [" X: n- T$ r
;;run time procedures/ n, R3 c' T$ U' ~" K8 f/ C
! B7 ^# ]8 ?( Y8 a& u, B) e) f
to go9 [+ i0 W% V7 \& H! U* M9 k

  F! Q* [( q9 z: i2 T, L9 xask turtles [do-business]
- g( e0 H- P- F* D# k5 q  l( [4 t
end
7 R& q5 Q/ P, i; s9 [0 q1 B2 z7 l3 P9 e+ G' l
to do-business
- O* e" r) ?/ ^' @- F$ a

4 J$ {1 ?4 I" a4 b6 A* K7 \: b
" L7 f4 ]$ [& P5 \) }# s: z; \rt random 360
9 p! q  w7 h' u8 B/ t* U

5 Q# q) d0 ]! m% dfd 1
' H; N1 C  L$ m0 Z: V( e

2 W$ D' x/ b7 i' E7 c! xifelse(other turtles-here != nobody)[

7 d# D  ~* v6 N, C
. L0 ]; S4 [* l5 Kset customer one-of other turtles-here
; a! i5 ?$ p0 p/ P' u

0 I- R' s! U0 W% e3 P' i;; set [customer] of customer myself

5 U/ S+ G6 C% Q4 ~& Y
+ r4 J# V5 h6 f; Y0 x- _5 k/ ^set [trade-record-one] of self item (([who] of customer) - 1)
) G% y' i& z6 w0 a6 o' D# E[trade-record-all]of self
& H0 D% {" R5 s& a' x/ \;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
  w2 ^( |0 C2 K4 y2 I: C6 U/ G
- S7 @/ G4 u5 ~+ T
set [trade-record-one] of customer item (([who] of self) - 1)
6 p. p% c4 r6 g6 t9 @8 M* b( r[trade-record-all]of customer
. _8 F( X+ O0 u
7 X7 I5 f, W0 k) K# _
set [trade-record-one-len] of self length [trade-record-one] of self

9 M6 ^; @1 t" g8 t$ B
/ u# Z* y9 o$ T$ h" {* R2 Cset trade-record-current( list (timer) (random money-upper-limit))
. ]4 L9 t; X( O  U5 A7 E
  s5 X3 ]2 }  K8 b3 A% w6 f
ask self [do-trust]" J, e  L% ^! T. r
;;
先求ij的信任度) M. w4 X; s" ~4 A

7 k1 f9 Z/ m% J& e" n) N3 t2 M, `if ([trust-ok] of self)
3 e8 \, B, |$ P! Q- ]+ X;;
根据ij的信任度来决定是否与j进行交易[: \# q6 m" a) i! r
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself, c/ a- Z, |1 K% \, ?

- J( f% m4 u  @[

" k, M1 n4 x; L; j1 I& a) h
- {2 |- z  }- U8 Ado-trade
7 b* S; u+ z% f7 h' H
$ V, O8 K7 z  O2 \
update-credibility-ijl
* y, d, }5 C5 T5 \7 f

9 U" a' N) _' B4 Yupdate-credibility-list+ E! b5 o1 @" X4 E4 s; G7 v

6 y7 J) Q6 g9 {* N6 |4 V9 @
9 Q2 _4 G7 v  }update-global-reputation-list
1 c5 v5 N7 C7 u0 p6 Y$ Q6 h

+ v% r3 D5 @( f# y. Bpoll-class
" {" @: _* r& A: M0 t% k
5 U( j) u3 I4 {
get-color
& Q! ?. ~0 }  V3 y

! I; t6 V4 M- Y6 v]]
1 M- p( a/ K$ l0 }5 ?# I
' y+ w# I0 v7 C- o9 C;;
如果所得的信任度满足条件,则进行交易. n, R% ~7 ]+ g! ]

" L' Q$ ~* s( z: {! S, X[
8 F: t# h, G3 \( H% y1 r; Q7 k

/ h9 [8 u& V/ _) a3 D- yrt random 360

& H" }- V; h4 Y) \: F' O) V
; B. a2 e. M1 S3 j& a( Tfd 1
& G" k% H: y: W4 X6 h+ \
; O! |( N7 g5 K- S
]

4 r, e) @1 W/ A5 G3 N( t
" }& u7 t8 Y) s! p5 }0 aend

8 X+ r  {+ q# K( N  P$ X# U9 q& T
to do-trust 6 T: F3 R: A- N/ S( Q. M# F
set trust-ok False
/ h! b" t& T, Z7 T3 E; ?  C8 k. `! u' M

! E4 C. ~* B9 @let max-trade-times 0. ^3 f' f+ O  @( S9 p' r& R" u! `
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
  a1 _. y$ `6 J  d( z# v6 elet max-trade-money 0$ L7 Z2 ]$ D- Q: N3 u* K0 K5 a) z' }
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]5 P, t+ V! ~6 C+ a2 {0 e$ X3 |$ E9 j& m
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))- O+ z2 `; v$ |
" }+ j) u  g* i, j- w

! u, b' k2 T8 I$ G, F7 m2 f4 rget-global-proportion
' `8 D) c! v8 v3 qlet trust-value
: |% L* ~/ ]* |7 ^, y; Q' H) wlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
# v& i& K- d9 t8 b( q* f3 G1 ~; B5 L
if(trust-value > trade-trust-value)  V& I/ D: c4 L7 }
[set trust-ok true]
" Z: |6 p2 o4 A5 E' g& iend
5 t# s# |; Y: m+ J) P$ S$ Z5 }
& }. b1 D/ o) T1 j" S# Vto get-global-proportion* ~9 |/ B( f4 I9 K7 o
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
  M( [4 ?/ T" `! G1 [$ {[set global-proportion 0]6 O8 T9 K7 D% q& N) |
[let i 0/ ?) h  Y! _3 R2 [
let sum-money 04 ^2 I. j7 |$ f- M: O
while[ i < people]% M0 _+ s( S; D* k5 r( O. }
[
+ \4 _# A$ ^3 G: N( k  T3 Z8 {if( length (item i8 a: u1 a; b& K( x6 l0 B
[trade-record-all] of customer) > 3 )
5 I' c* T) `8 N- b7 c! Q
[6 D% v& \1 ]) L4 Q9 W. f+ e: O
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))9 \( B6 O. u% e: o
]4 E" B9 C% E, Y1 G6 J! }
]
! V4 N" u( B( plet j 0
" ~/ v& \7 _$ r6 v7 Blet note 0
% E. q; B5 |! ]# [" k& Fwhile[ j < people]
- M' S' }3 L4 B! c* {$ f[8 N; F, T( M% s# W
if( length (item i
1 o7 I8 ~5 j" Z[trade-record-all] of customer) > 3 )
- u: N8 |! @+ I# m5 H) r
[) n2 \8 y, {! r  I- @
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
% k6 ?4 B/ A) l6 e. k7 |: C& o[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
0 h% ^/ z# u8 R[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
/ @( Z; R2 ~4 F- d]
' j# J5 w$ ^, T) j]
, W. c4 P$ o) }9 c6 Cset global-proportion note/ s2 O9 ?4 p% D  m* @5 n/ B
]9 f! \( A4 a: O
end( X: t6 j' t6 T' b5 {, c( r
. x6 p* y" s4 U5 a) S# g- E; L9 x
to do-trade5 ]% B- {2 E5 ~1 f& Q
;;
这个过程实际上是给双方作出评价的过程
6 z4 d: e/ L& f) |/ ~$ B/ Wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价' `" ?3 ^- A6 g
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
6 f. v. k) n" _% t  I* Xset trade-record-current lput(timer) trade-record-current
. c6 T% p3 `% \( w% t;;
评价时间5 h  r( B* c, ^6 x( z& q! A. F, r$ w$ q
ask myself [8 d, N( C- e+ i9 ^( H% f) e
update-local-reputation) t) V9 B4 g. [. j* n5 F8 F# I  Y1 ~
set trade-record-current lput([local-reputation] of myself) trade-record-current
  o, P; t$ a$ L]
" t; o/ }3 f$ J2 i7 hset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
" I* O6 d* s5 @;;
将此次交易的记录加入到trade-record-one
1 C- R5 l( U3 Z/ iset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
+ \% L7 E6 M) J+ llet note (item 2 trade-record-current )* A/ |& m9 \7 R: u% {5 a
set trade-record-current
' [, i2 G: a( O- ](replace-item 2 trade-record-current (item 3 trade-record-current))
/ t, t8 I6 b8 F9 X5 z+ C  P
set trade-record-current5 W- y' W# r. U2 c$ e5 A
(replace-item 3 trade-record-current note)
5 o+ y1 j: E  M7 s; I; N& \% H% s5 U
& D0 X/ L; O! c2 |" O3 G

8 p" C+ e7 i7 P7 T' rask customer [
( n! t! p( `2 Y. jupdate-local-reputation# J( y. o6 V: b7 m% |- L  F
set trade-record-current0 k% S# ?. G# L( f6 n5 \
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

5 ~+ ?4 P+ J$ j- e$ n/ y+ q, w]
% D- K, _$ f* ~7 v8 P7 M' |
! ]4 @2 m. z+ J8 r. D" R

" ]5 V+ n- N1 G% A, Dset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer; s* W& M/ x( q4 Q
* e3 a( v& u: W! w2 \6 r
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)). y3 A; o+ h7 E- q6 U
;;
将此次交易的记录加入到customertrade-record-all. @" t1 P* x9 Y' q
end! ~& N, _- U. J: L
& A& Z. _# e1 S: a% d8 {
to update-local-reputation
$ k) y+ U0 M( Q5 K2 ?0 tset [trade-record-one-len] of myself length [trade-record-one] of myself& O" a# |' j1 z- g* |% ?# ]

2 ~9 |; v9 {# \! c2 z3 s; f& J$ M" l) E% ~
;;if [trade-record-one-len] of myself > 3

9 _: w' T' V2 @6 Pupdate-neighbor-total
  F# u3 s) T  I' j5 `% Q5 M+ `;;
更新邻居节点的数目,在此进行
  A( q, |8 u/ T: glet i 3
- Z- ~+ o4 Y# ?0 ~let sum-time 0+ K5 C4 n. ]5 ?* C3 o5 j# q
while[i < [trade-record-one-len] of myself]
0 I  h/ f2 a- P9 [, B[
9 _/ K7 H6 ]! V( {3 T+ qset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )8 |3 Y* g' C8 G5 N8 X/ h- U& t
set i0 t( p# J' P" ?. c8 p7 h
( i + 1)
1 j+ f+ O7 G& Q( o7 X" k9 T
]* C$ ~8 [; ^! k3 @! S, k
let j 32 m/ p* _# n* f, m' @) u- e
let sum-money 06 q$ B$ ]- M& z4 O
while[j < [trade-record-one-len] of myself]+ g' z+ A; Q! s& K8 r
[
0 P  i, B4 y. u4 L5 j, G3 u3 Gset 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 L7 `0 P  N9 Y" M
set j, {: |' x7 l8 i) d7 m
( j + 1)
( _! P8 i: A* o& N' a; H, g
]) e8 z' ?# E5 e8 r6 D. r( n. x( y; X
let k 3+ A* p1 Y) O: V' V0 O
let power 0# G  A/ v4 r+ h( V
let local 0. C6 U7 P/ d& Q6 Z
while [k <[trade-record-one-len] of myself]1 a* x% e- ]) i  M3 {$ c- Z) I
[
& n! v$ o# ?0 Pset 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)
( P2 |' a# L& M! Q- B2 {set k (k + 1)0 {. ]3 [3 V: s2 K1 k9 l+ a2 l
]: H2 Y+ K3 U' t9 ]1 j& m
set [local-reputation] of myself (local)
4 `( c" V  A" @+ Y- t1 oend& U( ~$ y) w4 Q3 D6 J

7 \4 X) j5 v& u# c, s% `to update-neighbor-total
4 m4 D# N# h# E9 f% h7 ~6 l
0 r( T; e5 F$ u1 v4 O6 `! cif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
. K4 M% v6 q. N$ r6 k/ w* z2 ~" ?9 S1 \

  g8 ~- o$ }- V9 b) zend
" u" R6 Y* P* v8 ^0 E! O3 Y5 v  n
! ^& X, q! T3 @5 ito update-credibility-ijl ; [) V  ?' O0 d7 K0 b

$ O+ g- @$ F: E& S$ r;;
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。
3 N9 g( ?, ?, w: K7 L. l" _5 Plet l 0
  E  }/ t( \0 j2 r) k8 a. W* ?while[ l < people ]
3 E8 f5 t0 V& E  A% i* L; `;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价2 X  G8 u8 F* b" v6 O, o
[7 u/ Y  Z9 S. \* P
let trade-record-one-j-l-len length item l ([trade-record-all] of customer): D, D  h* a' l4 `3 w
if (trade-record-one-j-l-len > 3): s* w7 W3 l& `" a6 _% `8 u! Y
[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. u1 j& r3 z% j4 q* E/ G- n/ u
let i 3) w# ^8 f9 {! ~. o. v
let sum-time 03 a6 J" I5 S: I) e: t9 s
while[i < trade-record-one-len]% m+ j5 y0 U% y5 c
[
  F' `2 s) @" K2 D# O3 ^! jset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )% _& L* P/ B$ k0 S8 \
set i
9 E. w2 Q$ {  y, T0 F+ a( i + 1)
' y, C) n/ k1 A% l9 I
]8 T$ C* g  V6 f( d2 f' D
let credibility-i-j-l 0
; i( b1 e6 W$ ^$ Z3 _8 E. [) x) W;;i
评价(jjl的评价)
9 N& n$ k4 h6 J9 T3 U! Alet j 33 O/ w3 A/ c5 h, k% n1 j4 y
let k 4% E( I, X9 c8 ?( D1 R( [! N
while[j < trade-record-one-len]
# C! T) C( {$ L& F* a[) {& i1 Q0 }$ l0 }; h- p$ d9 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$ c  X8 a! m: L  [8 x3 N' _
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 y" ]$ @! U8 `* l7 O# [set j
+ p- r' M4 B7 {* _7 |9 f" ]) M6 P( j + 1)

7 x$ o" W3 F6 Q]- x0 b- x/ Z, H1 J2 H4 }
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 ))
$ S) \7 {, l5 X$ d9 G; G! k- I0 e! \. x1 W$ \

. E+ s* p, s/ _, alet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
  l% O% G3 o. g. ^! o;;
及时更新il的评价质量的评价
* ?, r) P' J" I) a7 _; G, {set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
( C  h- |  ]3 g4 y& T" b' Wset l (l + 1)/ m! o* M& k- V0 d9 t; S; B
]( S* ^: _5 _4 T% A
end6 y; x$ I1 N! f& d5 M
* k# C1 p3 }4 f
to update-credibility-list
8 c5 t* Z3 |6 {. L) g! Q9 ylet i 0
) ^: R: J6 z0 \- b/ dwhile[i < people]0 e8 H# l$ _$ J, }' f
[8 J& m% R- j( M
let j 0
; j# v+ y/ c( D; slet note 0
& \! [- _9 B. r6 {+ ^' Llet k 0
3 {  J! U! ^+ S/ ?4 C;;
计作出过评价的邻居节点的数目7 q' T; w  B+ ^4 E# W* D
while[j < people]
, u4 c3 t$ D/ ]1 f: i[2 N+ l; B4 X, C" Y- ^) V
if (item j( [credibility] of turtle (i + 1)) != -1): L& ~' s, z4 c/ @( [% N; C
;;
判断是否给本turtle的评价质量做出过评价的节点
" D# y; t) S) R/ e+ G[set note (note + item j ([credibility]of turtle (i + 1)))
' K& x$ U' \4 i;;*(exp (-(people - 2)))/(people - 2))]

0 g: y! C3 f3 _* l7 tset k (k + 1)
7 }4 a: ~6 e. \]
, d  u: o) u" ~" ~8 m% O# qset j (j + 1)
' Z( e! t7 a+ ]0 S8 G% K8 u]
; U+ u0 t+ `7 A  _set note (note *(exp (- (1 / k)))/ k)
9 _- B4 X1 X- L7 kset credibility-list (replace-item i credibility-list note)
' G8 g  C5 P+ Nset i (i + 1)
4 |( m- c) z6 {1 B0 ?3 M]' `7 r/ u7 R: ?. R0 @* {
end5 v* I  m, g8 a) j, H

. m2 f* o! o: c" E: Bto update-global-reputation-list+ j6 H# ~3 T! z/ Z8 R- D
let j 09 c& x/ g" U) f3 k
while[j < people]
( e' e4 }/ o3 g3 s' ~% E4 B: K[3 @. S- V) @( ]7 V( T
let new 0) h" F: T! g0 l$ p0 c& [5 i. d
;;
暂存新的一个全局声誉% K/ f8 l* K- x' _% d% r
let i 0
5 F: E+ I; C3 E. h6 A5 p$ flet sum-money 0
; \: o- c; }' ~$ y7 e( Xlet credibility-money 0. ?/ r. ^% Q6 A6 }( V# s) o5 H
while [i < people], c5 W& E3 K( [# W. d6 L! K
[
  W% Y+ ^1 _& y: H' R. @5 u0 Jset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))& _5 _" \6 J# p) n0 J8 \5 f- g
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))* E4 y, x& g* G- e
set i (i + 1)1 y' Y, x8 y- G, q( k7 A- c
]4 @, k, m1 i" @; ~/ k6 x; \
let k 0
2 c; \7 T# f! m/ llet new1 0/ i/ d; w- w  u2 x8 W$ Z
while [k < people]3 i/ l( d, {9 k( l$ o2 [
[5 h: f0 x6 y6 q8 E: M8 z) f7 |3 |
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)8 o3 o, Q: ^+ S+ c$ I( F* u% L
set k (k + 1)2 g/ N. x9 N& i( T
]& L5 L; w' d7 K) e) o, l  j& |
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
) _" U( u4 g# C2 [  Kset global-reputation-list (replace-item j global-reputation-list new)8 k' p: O, w8 C
set j (j + 1)% g) ^, Z6 t$ B5 B/ L
]
3 r7 K/ r+ _# U& y7 fend
' \2 X+ J' y* B6 t. O9 _
  Q& k# [- ?0 ]4 G6 \3 d" v( v5 r- D" a2 Q1 W0 |! j
. Q5 o1 Y" u) R7 M
to get-color
' n$ [8 B' o  s7 D" C' Y' I
# S0 {" f9 s( X) m; Z( Yset color blue
3 G5 y9 [9 Z8 k: Q
end
% S+ H- N; D  h9 g5 {) \5 z
6 V+ m/ k0 H* @$ r3 e, Yto poll-class) ~# T$ d! l/ M
end$ t$ x) i6 }$ R2 {- s9 e

( k) i) J& ?3 a! W& `& Cto setup-plot1
; ^3 N4 _7 T$ `7 T) X" V) r' [2 ?$ j! m3 n) V+ R( |
set-current-plot "Trends-of-Local-reputation"

3 ~2 ^  X9 b) d$ j3 D1 r5 h  K" O' s. l6 _" H+ g
set-plot-x-range 0 xmax
0 e8 N3 T4 D$ o- u, L6 f. A
. L5 v- q5 \5 a- k
set-plot-y-range 0.0 ymax

$ V& A  m3 T1 `, }% ?2 \; jend
: e) y, Y6 n- b9 W" G: |0 I' e
$ }/ i3 W, k# ~4 U; k: C0 c3 C8 Zto setup-plot2
9 H( G) K9 p; ]! w0 _
+ N5 k; n! {0 m' Lset-current-plot "Trends-of-global-reputation"
$ M  C' Z$ O0 W- I; W9 S# W
% p0 }2 Y9 @/ m: q$ a+ f
set-plot-x-range 0 xmax
  D+ f) ^+ s' ~* f3 W, w9 b
9 S8 {  f+ N" n. X, I9 N1 k7 }6 S
set-plot-y-range 0.0 ymax
4 p+ h# l" P7 [4 m9 |# ^1 k
end
9 v1 E$ p$ _, U1 n
/ N  o, p  v# X5 nto setup-plot3+ C  k" A  S( m2 m( x5 p! Y

: z' H$ ~# u. e: c- dset-current-plot "Trends-of-credibility"
; O! l& \) j1 |5 j2 s0 A5 _7 H- @6 X

/ N. ?' K; S3 Y' P+ M9 Tset-plot-x-range 0 xmax

- H) v* \3 }# S% d) O
/ G4 ]5 Y. e% |6 |7 W' g+ a* @/ {set-plot-y-range 0.0 ymax

, G% m# C' R( Q9 r9 Wend
& W2 q: ?/ j4 r: c: d9 {+ L8 N+ `, z( R
; Q. ?9 e* v( c8 C1 eto do-plots
" Z) b3 w; j3 m0 M6 }; L# vset-current-plot "Trends-of-Local-reputation". U% {. Z* F! W7 y! t( I
set-current-plot-pen "Honest service"
; q5 Z3 H, Q0 S1 mend5 \1 ?6 g4 `* x! x/ F
5 t0 a  j4 A* \& T( r0 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.
( c+ U5 b. G. B; [9 j9 p
+ {2 O3 p2 Q* O) _3 L( r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, 2026-2-8 20:40 , Processed in 0.034681 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