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: 9980|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 \+ [. W( ^6 J4 j7 ito do-business
6 P7 z+ S1 x9 ^+ @0 c0 e( J rt random 360% L( U9 z! g- h$ ]4 O7 v
fd 1. X; ^: E4 |2 {  Z+ S( m
ifelse(other turtles-here != nobody)[
$ ?% ?$ M: @+ J8 m0 Z* g   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.2 y0 V2 h: D( e1 I
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
8 x& o! B& p" D) H9 D   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer% ]/ {! a5 y1 e. D$ L, k# x
   set [trade-record-one-len] of self length [trade-record-one] of self3 s5 l5 G1 h+ c5 l8 u0 K
   set trade-record-current( list (timer) (random money-upper-limit))
- Q- B( i1 E% D/ s2 }
# p1 H3 C% Y8 V$ \) \8 L问题的提示如下:
% H. h" S7 ?/ d0 V% b% U/ {
; g/ T/ z: Y8 m  r$ uerror while turtle 50 running OF in procedure DO-BUSINESS3 L+ g6 g4 t' z4 N3 j  J* r
  called by procedure GO) D) M, i) w9 O) d
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
! l, b- v0 T$ X; u9 ]
(halted running of go)4 }# l8 n* J& \1 M9 U. G
  A6 _* k  N  n
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~~1 ^1 o4 K/ J$ V  K0 f) T& j
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: @- }4 _  \' O! X- g
globals[4 [+ |: K' j# Z% n
xmax8 a7 J- y5 `. ~8 U
ymax* }0 @+ Y" ^& j. d
global-reputation-list" ^$ g! g) O6 |- y2 I$ ~! e
& W; M+ z% c+ z  \; P
;;
每一个turtle的全局声誉都存在此LIST
4 s6 v3 B1 N5 d/ T) ~credibility-list
% }5 M" B8 \& x5 e: ];;
每一个turtle的评价可信度
. F8 E4 f+ f- v% p; u; W+ Ehonest-service  {$ ^7 E) u5 O2 Y8 n5 Z0 B3 t
unhonest-service
; ~: ~! S9 k! O, j- L: T+ O& Noscillation! E* j/ i0 @4 t: E* R) b' L* i- p
rand-dynamic
6 |" q$ v$ n. k: y( F, u]
/ d+ z) P8 v4 U  T/ e. i& a$ F6 R, z9 i$ z) ?
turtles-own[
7 n! ~5 Z3 x- @trade-record-all
( W8 I, i% J9 Q0 P;;a list of lists,
trade-record-one组成
, o- F) n+ q! A* I* x* [; A1 }trade-record-one
$ @6 S$ H- t9 e- m1 `$ H# \;;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% M/ ?( V6 [- V% v( s
- R! F0 ]6 \0 b7 t2 k' b$ @3 v
;;[
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]]
! o+ v; O* C: o5 u0 Mtrade-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]
; @) i% U; F1 |3 Vcredibility-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+ k2 X1 }; |9 ]4 f/ Z7 M: H1 v
neighbor-total
* J# e2 r4 O5 b6 f$ o+ Q" [9 I;;
记录该turtle的邻居节点的数目
9 V, ~& ]4 [$ `1 x3 o9 Ltrade-time
3 e' k$ y0 U+ d$ X;;
当前发生交易的turtle的交易时间
2 n( G( r% N  t1 x- \- v; B" xappraise-give
! [5 D* p( P% U3 E;;
当前发生交易时给出的评价1 d5 X- e$ n) Z6 S$ ^9 |
appraise-receive+ h. y1 p% m4 Q
;;
当前发生交易时收到的评价6 \& z: f: F" T. }
appraise-time) E8 D' u" d9 R
;;
当前发生交易时的评价时间' X  H: v, h* M  n
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
, `+ q8 j, h0 ^trade-times-total4 f$ i& X9 y/ J
;;
与当前turtle的交易总次数
4 J: D- F0 f  I9 Z* ztrade-money-total7 d2 b; b% {% l) ~
;;
与当前turtle的交易总金额3 M" W2 {7 T9 j! |) V$ x
local-reputation, h- X3 K3 D( i
global-reputation
% K$ x6 h" |3 ^  R- _2 }) Ecredibility! {8 j. x1 P& @% t% M" J5 c
;;
评价可信度,每次交易后都需要更新
9 Z7 J0 W* q( Bcredibility-all* I; W3 E1 w3 ], ~/ x% H
;;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
- E% |' s6 k5 k  ?
  g) v# H+ J# V9 X& b' A;;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
( V) N7 [% \/ ~! Y7 H# y( Gcredibility-one
) h4 `; d  U1 C* t;;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people8 Q  I8 q1 }0 C. w/ i2 @: S
global-proportion
7 h7 U" Q0 c' a0 U/ S8 R- qcustomer
+ r  l: T) ]' u; }9 }customer-no
2 s7 ^0 r8 M2 m9 strust-ok$ f4 r1 H( e0 ^* F$ [  s2 l9 j
trade-record-one-len;;trade-record-one的长度
3 e' P6 W( S6 E* q* \]
6 a- [4 H+ U& O; C
: M% a2 v+ ^9 T. [4 w! H;;setup procedure7 I/ p7 r7 \+ h. `, @: G  h2 Y

$ q; T1 S" L" d4 f1 Kto setup+ i" k0 y" q) Y5 Y6 K! R+ J+ f* K

6 g$ ~8 t6 N; O" w9 W  t' n+ wca
9 e3 ]2 N! ^, n, g( a$ D( Y1 T3 V% x
% m# H1 }) b, K' C
initialize-settings

- k; r9 y, G" B' p0 w+ x* j: f6 E% h6 o$ J( \$ ^
crt people [setup-turtles]
) o0 P. T# L- h$ T) U8 Y

6 |9 w% A4 t7 h7 a* ~reset-timer
8 k, L' l& r# m

7 M* @4 F  t, W% D% n$ }1 _) Fpoll-class

  J9 w$ t# A& l/ Z( Q- m1 w- T
/ `1 d( v; I& B* H: J0 Gsetup-plots
, _$ v% g# |9 O; w6 p8 j0 f
2 x$ a% K- W  G4 R% [3 S- S
do-plots
6 L8 v% ?/ Y, }  K: a' i
end
7 g2 ^* i3 [7 [, x2 I
* p3 P  N0 i* a8 R% Rto initialize-settings1 v6 W: W% J6 I4 I% N0 p
2 ?% O- w" \1 E2 ~: b; Y
set global-reputation-list []

3 v6 ^+ h- W6 A6 C4 a8 p3 V
, i2 t$ j" U; k9 t3 N$ z% g- Kset credibility-list n-values people [0.5]
  b2 o8 a, x% S" ^3 l  h

" M5 U0 Q0 @4 F9 o& cset honest-service 0

2 A: v. f7 j! i+ Y' K1 M2 D6 i4 w$ V/ a
set unhonest-service 0

' z* y( e* L( d! ^& Y
- e) [3 i2 a  Gset oscillation 0
4 U* K- X3 U5 |% ?6 g( f5 h8 L) W
) K, ~# v3 x7 A! x9 t! ?, d
set rand-dynamic 0
  y: S' E/ ~& a0 B" D
end
; ~, Z; A+ X; W& F$ W1 X0 s& T, p$ z7 Y7 ]3 n# V! V/ O' I: k4 c, p
to setup-turtles 4 v7 z5 \  P' f% l$ ?" s
set shape "person"
' c3 l. c$ x+ e9 Z  ^/ bsetxy random-xcor random-ycor; S0 x) @7 I- g
set trade-record-one []* }9 _/ j/ J: u: u' g+ @

+ }6 {% c1 ^- {set trade-record-all n-values people [(list (? + 1) 0 0)] ; i) V% s3 a4 k! S
* J9 x) O! A, @$ Q3 X+ d5 p7 P
set trade-record-current []
8 O5 E; h% p" e1 Z- P& N2 Xset credibility-receive []
* V8 I- }, f' F5 {set local-reputation 0.5
' H6 @' E* i/ nset neighbor-total 04 R& h: h5 z  T7 o
set trade-times-total 0
$ R, z, k' D0 K6 a" Hset trade-money-total 06 e, B! Z1 C% c1 A* C
set customer nobody% c* H5 I; s. P( t3 V1 i8 x" G
set credibility-all n-values people [creat-credibility]# W3 Y: @9 `. W: l6 d) f; D, {& A
set credibility n-values people [-1]
! D' W" _% z" F+ l' rget-color$ [5 `; l6 i& U/ Z
9 p& c5 ^' Q- @( [, m& Q/ I
end
  [* Z, _! ^7 f4 q& ]. {1 e" v9 k# M! {6 K" M
to-report creat-credibility
  M  t# b5 f4 T0 Z' M! ]9 t; l$ l* ?; ^report n-values people [0.5]& `" @$ I% c5 x  o1 L
end' p8 F# T6 n4 q& e% G4 e. I

5 K; Y# t' M1 N, i0 B/ ?- M. c( Wto setup-plots
0 a7 ~9 |7 d) [( o$ Q$ \, n; F, T+ A
set xmax 30
3 a4 L( t" \0 ~6 a3 _

$ J- p/ u3 M& _* {6 K8 Rset ymax 1.0

1 @0 y; o/ p: u5 O) r
- C3 {7 W  `2 n9 lclear-all-plots

: a" D, _4 G" t  @( x- w& g- }, r* ?' L* z' L+ x' R) v
setup-plot1
4 Z+ \1 u3 F6 K+ T& n
8 k& ^8 g! B9 {
setup-plot2
% s9 g# V7 |  E! E3 w

9 e2 R. F( a" K& v0 usetup-plot3

0 U  l" R. ~+ ?6 c/ j8 \. q. a0 Aend; o4 y' A0 U4 X; {; T% F/ d
5 u/ E6 ]6 l$ O, |5 m  k
;;run time procedures
- @- G  y. ~6 r7 \4 B! d$ N( _
+ K2 c( F. q( t" T% m- yto go
8 }, b9 O1 L8 j* V0 v
% S- I% F( R9 \! T9 wask turtles [do-business]
( ^9 v0 p# S; F& V
end
: B# V1 ^: x4 D" }$ R& Z) ~3 X1 i" @2 D" V, q
to do-business 2 I) M5 }% Z4 Z9 ]1 p

' @) d# H  ~( x( E+ h' X  A  i, l9 t; W5 h* Q( Z# m
rt random 360

2 P. d! H+ o% p, p: d6 E/ U$ N: q+ e4 y
fd 1

$ {0 L/ t, V2 A. O& y6 ^" I. |! N) G- {0 m/ H4 d$ f
ifelse(other turtles-here != nobody)[
3 ]) }9 A* o* ^4 T

: ~1 H5 Q/ H3 T+ ^# N% Vset customer one-of other turtles-here

. `, T9 x. g0 K+ b' `  Y0 J! r$ H3 u4 [, \/ I5 H" D$ v
;; set [customer] of customer myself
( v# _! ~: T2 ~9 B) T; d8 v; Z
3 x/ |7 {6 {  t5 N
set [trade-record-one] of self item (([who] of customer) - 1)8 a1 V9 ?* j  a, r
[trade-record-all]of self
# ]) j8 a8 l' W3 R3 P, u+ z;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

6 O+ F6 a+ N) s0 D( o- y& o, X4 H5 l% J! X. ?
set [trade-record-one] of customer item (([who] of self) - 1)" \, I) V2 o1 }5 G! A; M
[trade-record-all]of customer

3 W! |6 v0 }5 I5 t2 M* v. e" T* w% U9 B6 F3 X) o" J- r
set [trade-record-one-len] of self length [trade-record-one] of self

& N% ]$ K* R% F; _. T, U$ v  Z* ~) H+ J  p! \! O
set trade-record-current( list (timer) (random money-upper-limit))
' _; ~9 a3 ~  R( ~, w1 e8 K1 @! T
# u3 U6 H1 |7 E6 k) j
ask self [do-trust]* w1 I9 w) p% t8 v
;;
先求ij的信任度
3 P: ]$ J% v: n% {' k1 G7 |/ i4 Q0 o6 M' R, }/ K) Y
if ([trust-ok] of self)# }% N7 b% G' v3 s
;;
根据ij的信任度来决定是否与j进行交易[
, Z- ~4 R7 N! Hask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself! ?4 P* Y) R6 w: _7 M" i

! C; q4 ~/ `+ s3 s- p3 }[
- n5 E% j- k5 L) Q' p% e, l
/ }) P+ \, j1 e' P1 L$ b7 l
do-trade
; ~# q* W: t+ g6 Y; T3 _

/ b8 a% H, L) pupdate-credibility-ijl
# G# }0 \: h. {% X% n7 ~

; s- a  S) p5 Y3 Qupdate-credibility-list
8 v& J3 L/ Q) Z6 g- n7 f5 o% H( \4 o# P
, c# f: I% p1 E. n/ }% U0 ?! ~3 A
5 g$ E, u- Q$ k2 P8 C4 L  q+ a
update-global-reputation-list

: G1 D+ i2 ^* V3 E# j, M7 \% v; c9 e
poll-class
3 D/ S" n2 l$ p8 Z8 w! i

, x3 x4 h9 P% H, R* c6 yget-color

" m5 J: _9 h6 G  U6 g7 j/ `3 f; j+ b/ p/ m# z
]]0 P( ~# d5 k5 d. L  I5 p# e  E
- T- r3 Q) e4 d; m* x3 m
;;
如果所得的信任度满足条件,则进行交易5 E( q4 h/ a' X4 R" h' {( T
3 U" \9 _- w: ?9 f2 E9 l
[
- \8 P1 I& t- u
; l5 M& F: g$ z% v
rt random 360
& g. ?1 ^# D4 C) i4 n* C2 @
3 R  a/ |( a+ d; V( k1 w. m
fd 1

# h! G/ V$ S8 r. `# \7 r
) |! |; l# _$ m# n  }+ x]

% K$ g% G5 |1 O+ s9 s; d  D
+ E) Y5 p5 B5 Q# E2 g- qend
( I: G& E2 \8 r3 u. B& h2 X3 w
; Y! L) Q1 z5 A( ?# m$ [2 a1 P
to do-trust
* Z+ }* [+ w$ E- T. p/ j/ Sset trust-ok False6 M- u8 X* O4 ]4 k1 N( q
. D  S' j3 ~/ D: `& c1 Q. f+ X
) x3 N8 |. j' W9 L6 i7 Z0 @9 H/ @4 B
let max-trade-times 05 E5 X9 g0 b1 T8 F$ A6 ?+ ~1 j
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]7 k  K% M0 b$ H& ]2 H( t) c
let max-trade-money 0% B+ C5 z, w7 v: D; ~9 Y
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]/ R3 {1 c, b) W9 D, E( S
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)). V3 a2 r0 w- Z1 O/ D) v6 l4 x
0 w' W2 [2 B, S0 X5 t9 t3 j7 L

. \& \+ D" @; G9 M$ Hget-global-proportion; x. w" z7 ?+ J4 A6 y, J3 H) h+ Z$ Q
let trust-value
5 b, E7 d1 t- \2 x" M+ U! vlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

: I' v4 T5 C3 d, N/ _8 q; Aif(trust-value > trade-trust-value)0 E. Z, ~0 f7 G: `; x  Y! M
[set trust-ok true]
2 s7 D* ^* r: |) O, K" [end
2 }. \5 F/ v; g" s- `* w
" d8 {6 m, x. W5 V3 A+ q; ?to get-global-proportion8 O) Y$ v& k& E' f$ ]- Q4 n5 c% R
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)/ I2 H' o" ?8 `9 G- S
[set global-proportion 0]% t, w9 S* F" a0 b$ i3 }+ j
[let i 0( }' T- ^+ G$ \; A: i: E& B
let sum-money 0
8 i5 D0 o4 l7 `2 P' R0 D4 bwhile[ i < people]
" l( Y3 _9 ~5 ^6 P9 O[& B) z( s: O4 @
if( length (item i2 N" A6 A1 [/ \2 |9 ]
[trade-record-all] of customer) > 3 )

3 c5 M  c( T* A1 h+ q& l[+ n2 V, t: I4 n, Y8 W+ |- U
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))- S/ h  k6 _8 [% A* z6 o
]% h1 o4 M. g0 H+ ^( n) N; Z( ]
]$ E; D( ]) \$ K; b
let j 0
: `% i" L1 Q1 p. ?. J) }/ vlet note 0/ l0 M6 d# A6 a  }) j0 c
while[ j < people]
0 t, ?! }/ x5 x[
  w$ b6 ~8 A+ y5 X3 b6 U0 Tif( length (item i& {+ B# S! E5 K% E0 i- s% |
[trade-record-all] of customer) > 3 )
7 I' m( y; Z3 s4 f( t9 Y- `& `
[
3 F% ]7 {# W. fifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
9 l. E  D" K! i) n1 L[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]: C. i) b2 `- S, v. s  o
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
- Z) x% D4 m3 ?2 ]+ e' v]
7 v* R7 z1 k2 d+ |]% \( L5 U+ l9 K  _
set global-proportion note
) a: ?: k! |! D' B]* U4 B0 N% X' D6 b. X; D+ H- q, x7 f+ M
end
6 B$ j% l& H4 a) Z  K2 s1 s4 ^  }: v' A' a  K* ?
to do-trade) ]5 L- z  w; u
;;
这个过程实际上是给双方作出评价的过程! C4 {& Z9 F3 B: ?" g
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
4 O# K: `$ P3 b3 kset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
6 K) c, B" H4 H6 U' y! V  Aset trade-record-current lput(timer) trade-record-current
8 e0 T) o& }. a# \$ ^7 M% I  l! [% K, r  X;;
评价时间
  s9 y6 F  C) B: Yask myself [6 Z- u! X- D" T6 V( A
update-local-reputation
4 ]+ E4 O# k- o5 ?& M; R) Hset trade-record-current lput([local-reputation] of myself) trade-record-current
" p6 K+ Y6 X) H& K8 X+ n]+ ]1 U' s- n$ ^" o8 ^! i; k
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself( q' D( @5 o" ?( z) Q
;;
将此次交易的记录加入到trade-record-one
) ]* ?7 V7 j8 u8 p& Zset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself), h  u5 X6 V. p1 e# L5 p, O
let note (item 2 trade-record-current )
& X* i6 m" C0 `8 a% }4 m1 Cset trade-record-current
6 Z3 K8 l" ]- B$ Q(replace-item 2 trade-record-current (item 3 trade-record-current))
: h  T; b# R" e6 `# |" D' E& r
set trade-record-current* [$ R2 X# F8 r! u8 p; _
(replace-item 3 trade-record-current note)$ X$ Z; o) `/ i9 Z
: @/ g$ M; R8 g

+ ^% Y, d: ]3 ~ask customer [; X6 x. A  }( S. y
update-local-reputation( v( R; _4 G' G, q! W( i" a
set trade-record-current) b* U2 _. N' g, L! S1 _+ ?
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

, }3 ]* s5 O' J0 H* Z  K- J3 U9 ~]
( F+ Y) }: ^- r# ~. s/ n2 B2 p  f/ w+ ^3 w- K( N

  k9 g0 i3 j3 H. q" Iset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- g5 Y/ E9 Q% B+ n7 R
6 f2 D- P" ^$ e8 T6 w
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))# ~; m+ _8 h$ \  L
;;
将此次交易的记录加入到customertrade-record-all, H; M+ |9 ]# `0 s
end
. R. A; x( f& R- \4 w$ E1 E  N1 H# w6 K) s$ z# m! Y; M
to update-local-reputation* [5 `& Q& l/ r$ X1 r' w, B
set [trade-record-one-len] of myself length [trade-record-one] of myself$ }& r4 S* J( G( o* `4 s
- f  Z, o6 N+ h& T6 E6 _
1 U. K# S! n2 B- ]
;;if [trade-record-one-len] of myself > 3

, ?7 m5 R/ S$ Mupdate-neighbor-total- d- H1 t- X+ O# B5 T7 c: }8 R- M- h
;;
更新邻居节点的数目,在此进行
0 E7 }5 @5 B, P8 w/ y0 M# mlet i 3! o. c( V) A' d6 p2 Z: N  ]
let sum-time 0
1 p5 E' Y6 x3 Dwhile[i < [trade-record-one-len] of myself]
" t% M* n7 k* U% t/ W[
( R% F; r* x1 R7 T7 b6 Jset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )' `: q  e/ w' o( U/ e* s3 v: K
set i; T- h8 k9 c" e8 H9 L$ p# t
( i + 1)

6 v' N1 T' m! k% X: y. \3 E' g]
4 G8 W) J  L" B3 I% s8 f6 alet j 3/ d2 U2 Z8 K4 v$ x+ U2 g  t! b, q
let sum-money 0: p0 P( P9 P8 z1 L. S
while[j < [trade-record-one-len] of myself]
+ x. z6 \( c; W0 p, N0 R) Z[
% R/ s$ E1 |% H, Bset 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# M2 D) G0 b  m8 j: R$ Y+ ]' ]set j$ P7 f' D4 _* `+ Z& j
( j + 1)
/ F$ R+ t* N  `9 F
]4 Y# d$ A; u( Q- P$ k; l+ c
let k 3
3 f5 L* A: d0 J- m& _let power 0
9 l. }( U8 g. r% V# r, S" O" B2 klet local 0" F2 p6 l7 U; ]3 M, {3 t0 t+ i
while [k <[trade-record-one-len] of myself]! H5 P7 h7 \/ o' }- _
[. @2 C% e3 j  |1 `, W+ @5 E
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)
& w' m5 C$ Q' z" I/ y. N3 Wset k (k + 1)
5 p& b0 q- ]/ e: n5 j$ U7 a: _]
+ O0 E! B9 n. M/ r/ qset [local-reputation] of myself (local)* E4 Y- b0 q" I
end9 v# l1 C# `" u/ s6 [& U* L

- q  r3 R" c( D6 L7 `$ bto update-neighbor-total
8 _$ \4 M' [* P) I. r
0 K6 t; `: {2 j( ]8 n( C: w* N+ qif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
% C; p" ^: C' L1 Z3 b& j5 y! v5 |) W5 Z4 f. O) m
' K% N% q/ Y! ~! c
end
7 q' W3 e8 _1 w) c
: A* p2 ]% }. }4 E6 W. K  ~* ?to update-credibility-ijl ; x6 w' K: f, u4 M2 |

% e, X3 F+ i1 t- [7 r# s;;
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 Q8 e% J) v$ ~let l 07 S, @0 Q! h9 }/ x8 X* ?
while[ l < people ]
/ Z4 b+ P1 r: y& R% U. I: [;;
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6 b, v, u( r" N
[! {: U# E7 ]/ U( I% V) |
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)4 I( {/ r# q+ C5 |
if (trade-record-one-j-l-len > 3)
% ~$ J7 v& Z$ {[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! P) e- J9 S" o3 t' V
let i 3/ Y: ]5 o( H+ ?  o5 ^
let sum-time 0, s- {: h% b6 b: Q
while[i < trade-record-one-len]! X5 L0 O+ g* S0 B9 {
[
! F. Y8 W1 H. G, rset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )0 \2 Y: l3 Z/ k8 f# d  R
set i1 Y* W4 H8 G( ^( c+ }* p  k
( i + 1)

8 P( l! u! P) f& D' Y]5 h! x  K9 k1 k, b# c5 X
let credibility-i-j-l 0
8 c" h* G# q! q1 T2 N+ x;;i
评价(jjl的评价)0 S0 n7 b& t7 z* H2 F- t7 p
let j 3
# a6 [* t8 ~# o, Nlet k 4( Z2 e% S1 H& l6 S& }) _
while[j < trade-record-one-len]
. _# S2 e. [# f" z' ]; |[, [8 [/ h  K  Q! Z8 U
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
0 M5 b2 A3 a% Y$ B8 @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)
" S0 t: v% ?1 N! D9 a1 J# z" l' _set j: G! l# |% S5 S. A1 h% E; M
( j + 1)

3 r0 I" r" `) d]7 j1 U0 J" q% c$ i# \
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))# ?( X! i* d) k$ X. z) G

2 B7 C+ G4 s5 j6 T# I  H

; ?4 z, [/ g8 S8 ?let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))) |+ s5 I, z# S) L3 [. x  s9 S
;;
及时更新il的评价质量的评价1 F5 h& T& o. y* ~1 _
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
/ D* G! J6 j/ _8 ~" Z2 t( dset l (l + 1)
: z8 a, z5 {& n]
8 X6 Y/ E; e, c. ]  U9 ~' uend' F& Z4 ~" K: G$ a5 A( |6 _9 O; F* E4 h

+ M# K  [0 h3 l) ], Jto update-credibility-list
, B: I) S" [/ O# S& Z6 r, u. slet i 0
  m( j' O- x2 Y, E  i. u$ ewhile[i < people]" K  I# r) M4 I8 N6 c3 s/ p
[: h% l9 ]# Y& Q+ \
let j 0
/ L) N8 K% T8 R- s/ |& hlet note 0
- {6 E  f/ M& p6 ilet k 0* g4 }$ D+ \: B' g0 z7 D4 ~  A
;;
计作出过评价的邻居节点的数目0 {5 |+ P5 r" Q8 N* T  k
while[j < people]/ o: B3 U5 b, _8 Z
[
# n* [  G# F' j- }/ Lif (item j( [credibility] of turtle (i + 1)) != -1)7 h, x0 I8 _* D  V7 _! n, c2 n. H
;;
判断是否给本turtle的评价质量做出过评价的节点
0 b" M/ n  b! Y! ^) r5 K* ?. C- \) F[set note (note + item j ([credibility]of turtle (i + 1)))
2 E! J$ Z& Y: ~;;*(exp (-(people - 2)))/(people - 2))]
" l- M$ [5 Z+ f
set k (k + 1)( E9 N# R# |( N, x9 c
]
4 \# a. L, T. _5 ]* {5 W: nset j (j + 1)7 P6 Y+ a3 X+ C& R( x0 }
]
' Z8 B6 \4 f. ?' L) Z) O/ _set note (note *(exp (- (1 / k)))/ k)0 w6 c1 d- i1 Y- r2 w
set credibility-list (replace-item i credibility-list note)
2 z- E7 A0 D" x$ K2 `( C0 eset i (i + 1)
, j6 E* i1 H5 P7 P$ L]
; w1 R6 g/ E! @1 Z. Aend
3 K* D/ ~( p% [, Z; E( _
* J' b) |+ f6 x: h1 @0 u$ V$ [' ~to update-global-reputation-list6 D8 M# k' n6 G. i5 q& T  R- U& u8 R, a, H
let j 0
$ j: m( i2 F7 I2 x; d- Y. Zwhile[j < people]
6 o9 o5 F6 j+ T8 ]) E0 `& A[
* {9 j# [* K' d" ylet new 04 _, @9 ]5 T4 Z8 K! v2 E
;;
暂存新的一个全局声誉2 Q0 t4 f' ^+ t- \" n  u5 z
let i 0
+ f' _, f6 s# Wlet sum-money 0& R/ @3 l' g6 X* i3 F. ]. O' W
let credibility-money 0
& b1 w/ n. S4 b# T; a' n1 e$ h1 gwhile [i < people]$ M, y9 d1 U8 c' z6 I$ Y7 U3 a' N
[) H; q! {* z8 k) N* m  g8 l9 y
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
4 t( A- Y9 F3 Rset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
# A/ I) |$ }1 A& g- W4 |set i (i + 1)4 o3 Q4 t% Q0 g+ m! n8 k+ P( U
]1 H9 g  Y& Z( |' z% y8 D
let k 00 h& ~0 o( H  q+ F
let new1 0
7 I% ]  W9 H/ P5 o! Z0 iwhile [k < people]
, f- o# h% ]4 r[
4 r) [- L5 {4 R6 s0 `1 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)
& p1 E# y- o" lset k (k + 1)
$ X+ Q5 P$ a" i/ v' y1 V8 G]+ z# [1 _* s' |; q7 W
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
7 |$ g& k# _& H" lset global-reputation-list (replace-item j global-reputation-list new)) C3 O8 `- J) ~$ n2 `# }
set j (j + 1)
- f& @  S  `+ ?* _# h]
. x% M: N; T, s1 Yend+ k9 f- A, S- O5 {, B. Q" B3 m
) Z5 ~; H- v5 n& @4 V
7 K- `2 z: G/ y, `
: l# K8 _. L, _) g: T4 x; J  [8 q
to get-color
/ Y: m! e" @0 N. I4 N( a! e2 m4 A5 E% l/ T' x" k" m! {8 ^
set color blue
7 T" @% g+ a6 b! @# R6 X
end
9 m  V* N! t. H( [+ r
+ |" G& p' t% k( {  M' U* k. o' zto poll-class
: X6 g3 P, i  }! j6 p- f2 z2 Eend. q  e% k* ~7 ]
9 G8 f7 u/ }- [; r. c9 E7 J3 J
to setup-plot18 Z% Y* h1 C' c; b* E
4 y/ j$ C) l5 O; \% q& z) w0 U
set-current-plot "Trends-of-Local-reputation"
4 C) n7 I' K  ~+ \: ~" P
/ E/ S0 g( U" h( k$ O5 q
set-plot-x-range 0 xmax

. h; z) O- Y  c7 Q# C3 M, N$ P' }! C  Y( a+ J2 g
set-plot-y-range 0.0 ymax
5 C3 H& ?, v4 F4 |" _& r
end
! ?& i' t7 B6 n/ ~7 o9 U* m' N9 _5 N9 m7 Q2 U2 `# N
to setup-plot29 M  s- B8 J8 c' R5 z0 a- ]

9 A5 R! Y' X2 s+ J, Y+ aset-current-plot "Trends-of-global-reputation"

( Q. J! q3 G( P! N
* z, t' Y! T0 }2 L  yset-plot-x-range 0 xmax

: F* ~1 k& b6 [' u: V) ?# ^  Q" O# _; l  Q
set-plot-y-range 0.0 ymax

  D& q7 }2 u  f7 ^end- k3 ?  q# d6 x" i4 t/ \6 E
  O5 Q# s6 d6 ^: T7 x
to setup-plot34 R2 b+ [: p0 v8 H7 i7 M9 B
* ?& _( z2 F& X! A+ D) H
set-current-plot "Trends-of-credibility"

, g/ P+ x4 G2 r4 F5 x* S4 ^! A- V# j( L( i) `$ ~- y/ o" }
set-plot-x-range 0 xmax

; z3 b! e) d4 L# ?: z( \( R
6 g  Y' K! W' c0 B+ C2 kset-plot-y-range 0.0 ymax

3 g" J# u+ i* R: zend
4 V( N, O' G5 ~: m3 O) q2 w* X1 G3 @( @# v% H
to do-plots
0 T( U) b+ u7 |5 Nset-current-plot "Trends-of-Local-reputation"
6 s. k/ {0 V) k5 e2 wset-current-plot-pen "Honest service"4 q+ |/ C7 j$ m! @2 C
end
+ C3 g7 m( l* y+ e1 Y8 x4 v  {/ X. G& @( `. R- N' e0 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.0 m5 x7 X/ W  D+ o

7 Y) i' B* |  E: J: q% }: ]* Y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, 2025-10-17 13:00 , Processed in 0.022875 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