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: 14807|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:
) b+ `* f3 ^  A* J; p+ o) kto do-business " `0 X5 K: i' E( Q1 M/ N
rt random 360
7 D2 M" r, D/ d; x& v fd 1
2 R4 p4 C% @% S6 s5 c ifelse(other turtles-here != nobody)[5 F  ?5 Q, P, B/ S4 s: y, q: [! U$ \
   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.
& v  I' v! t5 o- k/ ~   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    6 d$ P1 Z. w8 g( H" Y
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
* c* z  ]% ]" u   set [trade-record-one-len] of self length [trade-record-one] of self3 N1 p+ a$ B; ^8 K1 x
   set trade-record-current( list (timer) (random money-upper-limit))
) U  D1 \# L: G5 y+ ]- o3 t$ f$ e) `
问题的提示如下:( r9 Q7 G# P( r- h* M8 o6 V

+ H6 t& W3 L7 {6 K$ ferror while turtle 50 running OF in procedure DO-BUSINESS: x/ z6 A! p7 Q* `! ~' }
  called by procedure GO
9 k# F- A) w7 N" I8 s8 i2 ]OF expected input to be a turtle agentset or turtle but got NOBODY instead.
! P  T; l% b8 ^# v
(halted running of go); F2 G2 W. K, ?# T

2 J1 t$ l! y/ Q0 m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- K( |( r  `  C; b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
1 |' T  Q; y3 X* O* h+ R& O9 [globals[# w. D' p# L9 `& K
xmax/ u/ Q4 c# w5 Q' G7 G
ymax1 O) I4 M/ g6 H, p4 v: y/ M
global-reputation-list
6 V( W" a1 f7 G& B" P2 N6 u% s+ }% F9 }. f, P
;;
每一个turtle的全局声誉都存在此LIST
2 S0 h: k& Z' D- z& d1 acredibility-list
" |$ [" k' o/ M;;
每一个turtle的评价可信度. N; L# j# {: H* B
honest-service6 M  `6 a+ Y2 I/ H" L! J
unhonest-service
3 o9 h4 Z0 [& X; K' Y  eoscillation
9 V9 A: g0 H  R* N& R5 `rand-dynamic
  R8 W. L# X+ k* s1 a& C2 @5 g]
$ N/ @, p% W4 X
* P4 D/ q) i7 M1 h) `) rturtles-own[7 r. z3 x6 s. p; u! e
trade-record-all$ a: l! Z1 v- O8 ?* a, V) T
;;a list of lists,
trade-record-one组成
3 f& R  }  \/ H+ b4 ]trade-record-one: }7 B: T; p2 t# m1 n5 o
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
4 f7 I  f  s6 U7 h9 P3 q7 {. [8 V) e
;;[
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]]
' q) V# Y3 E* L5 strade-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]' z) J. B- W) ~" `: g4 f: t1 s
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# r7 I$ v" p9 p, ~# E- Y+ X
neighbor-total
- E  v$ ^* C3 O. q;;
记录该turtle的邻居节点的数目
8 x, N7 U  G% X3 c+ Atrade-time. ]' ~4 l& l0 d* e0 w3 `5 G
;;
当前发生交易的turtle的交易时间+ N: ?  X) ~! T) p! J( E, u$ W
appraise-give
+ f6 ~" L/ f9 Q  V9 U;;
当前发生交易时给出的评价
8 n5 N, \5 t( Xappraise-receive
6 [/ E) g, B# M9 G7 ?;;
当前发生交易时收到的评价/ Y+ r/ b* j2 S
appraise-time" S; p) B4 E7 K7 v
;;
当前发生交易时的评价时间
5 f1 L+ t  x' _& x- D9 Dlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉: X, j! ^; \2 K" [% S3 D
trade-times-total
7 _4 I; I2 A) R1 z# O;;
与当前turtle的交易总次数( a/ ]6 Z3 j9 n# T& B
trade-money-total
/ q% D& v- P7 ^2 M1 V& Q; G5 S;;
与当前turtle的交易总金额1 W! R. T9 T0 q  B# J
local-reputation2 o9 e9 b( T  |
global-reputation
4 o7 m3 f9 w( ~credibility$ l8 t- ~: D6 w) F# H' F' v
;;
评价可信度,每次交易后都需要更新9 |: _4 v7 s/ I6 h3 [* g8 E/ [7 F0 U
credibility-all
( b- H' [; h9 G  o: n2 [; o" F;;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9 |# Z8 t" k. [$ _
  |4 e( x$ e1 Z$ H7 U
;;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0.52 `( E. q7 Y7 ?# E
credibility-one' O% K/ w. o* o- r2 W8 X6 C* C' b, Q
;;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% r$ C+ Z1 ]: L) \! S
global-proportion0 l/ h* }8 y4 M/ n
customer
, G# d  i( k4 T9 r% P% M9 Mcustomer-no' k! O* c0 B0 K2 i" O$ u5 N& q  q
trust-ok
: w( t* t8 _, O# Wtrade-record-one-len;;trade-record-one的长度
0 [5 G( M: W) x/ ^5 y+ N9 U]: q: d0 [+ B$ g5 S* P

3 ], h4 N3 ], y7 I;;setup procedure
% {% Q5 |2 x$ ]
1 P9 Z( W$ ]+ lto setup
) O6 Z* d4 K5 \% I6 C# X" M& Z) w2 f2 a' f/ N' k- @& r! I
ca
9 h6 D0 a7 d! u
* }5 u: u; N' q" Y! X( V5 T
initialize-settings
$ P- }9 Q0 H" ]% o

: I, U# u  J. `; ^3 Icrt people [setup-turtles]
$ a$ D3 |! }9 F
* \1 T1 b3 f. J' ^9 h
reset-timer

4 u# v/ u' s* I1 S! @4 S
+ B! {4 q0 h# D% gpoll-class

$ }' h( _9 \1 K" L4 F5 J: o( I7 d; e$ N0 T+ M8 r
setup-plots

" k+ p1 r( v7 `
5 v% N8 V, g2 D, S2 Xdo-plots
# g- I6 z- |2 M( ^2 A; f
end2 j" p7 i  L2 n5 a  r7 H+ m
5 ]9 L2 _2 ~! B2 Q% _
to initialize-settings$ J$ |# r+ [0 h5 u$ U8 M1 S2 N
: U( u8 h6 U5 Z
set global-reputation-list []
1 p5 U: T+ n+ I+ |4 L( d( I
6 M& q1 Y5 G, b# c. U/ b* y
set credibility-list n-values people [0.5]

) n; K8 H9 [: S* g; Z$ h7 U! S, Y) ~& B, m
set honest-service 0

; A( J& t4 v$ z) Y3 A
0 p& u* [5 d% B0 w3 S! ~set unhonest-service 0
) B, @, r  ^0 T* S& Y. [: ]

( C# ~& p) J$ t' z: y! I6 Aset oscillation 0
4 S) `8 A: [7 h) c2 \, F/ Z/ G7 c

, ^$ J: y/ T# K4 Sset rand-dynamic 0

2 s- L# A  a0 A& _( Q0 l4 h- _4 Fend+ b' @, A! {6 \4 Z

4 g+ X. u6 ]3 h7 r; wto setup-turtles   [+ Y7 @) g8 Y! }# X
set shape "person"3 y; Q* S5 J% s
setxy random-xcor random-ycor
% o) a9 f6 D: U" A- [6 c  [set trade-record-one []  O$ E1 V8 x0 l

) _2 k5 X) r5 e1 v4 eset trade-record-all n-values people [(list (? + 1) 0 0)]
9 G6 \6 V) `6 \, v5 G# o
- f/ ~+ L8 I% j3 M2 d
set trade-record-current []3 y1 I- T3 W% C2 f' H9 s
set credibility-receive []) f! n0 ^7 O* e
set local-reputation 0.5( k; A" r* q) h- D: R$ h0 O) M
set neighbor-total 0* T3 C) _" b, p5 i0 N; B) L9 j
set trade-times-total 0  P6 @+ ~( q4 x$ D% g8 V; H# k$ V
set trade-money-total 0
; g6 F7 u4 P' K: Uset customer nobody
, {  B" o& u( L" Y) Pset credibility-all n-values people [creat-credibility]
& \( H, `$ ^0 qset credibility n-values people [-1]
# B( Y6 W1 N0 k) mget-color% }8 b. y/ [0 W- h/ N; }. z6 z
9 }2 u% R) _* I% h
end# a/ b, h; m' B* p

! z$ {( k: y- f( t1 h, W+ j0 ito-report creat-credibility& @, r( B& F+ Q/ E
report n-values people [0.5]
0 f) T% q# o! y& e& h4 G: M! S3 jend. i9 \% |* k; {4 Q4 B
* B  k3 I5 j/ z
to setup-plots
$ D$ f: M# G3 D# v1 J" r+ Q+ P5 ~$ W# h7 g+ x; c
set xmax 30
" v3 g5 r3 x0 Y( V# i
  K4 W, |* O! t3 I3 l) \
set ymax 1.0
9 f' w4 x8 s' h+ ]0 l  j
' E4 p& w2 l; z: e7 g
clear-all-plots

! `- K7 j7 T1 O. e5 L, ]/ D- c0 Z4 K5 Y% S8 I- W$ q
setup-plot1

) B# c$ R! c9 z* F: F7 _1 @2 S
! R, k: X) Z& }setup-plot2
, s# D, C% y' t; \

' {; g( K; ?$ X9 {9 |+ T" usetup-plot3

# p2 a: t! l) g+ D, Bend9 r) s3 U2 {8 C9 A1 r! {* N5 s
3 y. O! i7 C5 ?! P$ N4 `
;;run time procedures/ p$ i( W$ |. W1 R7 M

: ~4 K7 e' T' E3 w+ W/ R6 l# dto go
6 h* p0 a* r+ d5 j1 ]6 S6 j* K, X+ @0 G, v0 s0 J! `5 n7 |: R
ask turtles [do-business]
, E) h; p; m1 H0 U; J% U- y! ]
end
# ]& R# X8 s  M  B$ [
* a. M4 V9 L! Z, p9 J5 d6 A/ x( hto do-business
, _9 ?  G5 P, G4 q) t

( h' t- [$ t9 t& j# n6 Q% L
! e3 W2 Z* E2 z0 _$ }) Wrt random 360
4 T' R+ T1 W/ t; i

- _+ Z8 f+ n. a0 N+ `fd 1

( G( g8 I6 l( D8 m! Z+ z  T* R* g2 d  p3 j+ f& g; Q
ifelse(other turtles-here != nobody)[
* o) l# n; S' p

4 }% b9 o6 K. l% L' Oset customer one-of other turtles-here
! _! R2 J5 e8 l  u. [, \$ d2 {
! f1 ~) U0 t9 ?2 Q
;; set [customer] of customer myself

6 H: x! d- D" L/ ^8 _, C% @& d* ?6 x0 l: C9 W8 U2 Y
set [trade-record-one] of self item (([who] of customer) - 1); s3 W4 X6 z  z; t7 ^/ Z: w
[trade-record-all]of self
) w, C( Y) i) i+ K5 i3 o;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
$ L9 N1 X; u% _! E8 H
" b0 _7 H* s( k* D
set [trade-record-one] of customer item (([who] of self) - 1)
% m% r! J: K' P# W! v[trade-record-all]of customer

8 y( ~! }/ d* X, B4 X# q( u
4 U0 d6 }9 Z: I9 g8 }set [trade-record-one-len] of self length [trade-record-one] of self
$ F; Q7 x6 C7 f

1 j  J5 E2 w2 O: A7 P& a& c4 G, cset trade-record-current( list (timer) (random money-upper-limit))
  Q: F2 l% O! P3 K1 L

5 N% [$ ]4 X8 {- aask self [do-trust]
2 y8 J, v/ i/ c$ ?! r" ]& U1 [. o;;
先求ij的信任度$ F9 r, n1 R% X0 S" W) F) b

- q/ b4 u' @6 r2 q3 m+ h: U8 J  hif ([trust-ok] of self)
. B: c( B  _/ y  k" P;;
根据ij的信任度来决定是否与j进行交易[
( r8 V: {5 r! {" i! M8 yask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself! c9 o! `5 q, I+ \, E
6 H. I3 I' z* [& i5 z- R# j
[
. Z' k4 z7 |* o0 @' {1 o
5 M3 x, t4 B, c- e/ G
do-trade

  I: G3 q$ m; H* T- Z: ~2 e; T( _: ~' D, H. @9 x
update-credibility-ijl
7 B: E4 y- V4 z9 R0 x. \& h2 I
0 R1 ^( c8 }+ W8 X% K2 Y
update-credibility-list# u+ S/ ?* _- I) r/ k1 A0 ^* F

2 H* q: R: y) O5 _' c' F) x( Z& Q$ F6 ]' M& V9 i$ q
update-global-reputation-list

: I/ i% V( M; e4 Z1 s8 `4 ?) q! t; T* t
poll-class
& M7 w+ A9 o  l" s; F' m! n
8 q- T$ f  ^. A( A
get-color

2 R; ]" A/ U' O+ v
1 i0 l+ z/ R) t2 D! Q, y]]; C+ X+ i5 u3 I: ^

$ G% M& G/ M- E! E;;
如果所得的信任度满足条件,则进行交易; ^3 N; S3 Q, K; j+ ~) F, }1 m

: R6 \" ?/ G7 k! X; b[
0 k4 a7 Z! ~  E2 d# A3 v) {9 O( x" `

6 g( G3 k- f% b* r+ o& R7 {rt random 360

6 U* J) A: n  C$ ^& R8 u- ]- Z& @1 B+ o* D$ k4 _2 {$ D
fd 1
& j- k$ V7 ~, E- ~/ T+ x
; b9 y: E9 w9 o8 v' I
]
6 ^3 c( q# Y/ N) a8 X0 N& d

2 M# ]5 C* G: O' F2 n0 o7 [: jend

3 Q# l& N, h  \# g, l* i$ R
$ E( {* O: M" o9 _- ^to do-trust 4 ]2 y: |6 b9 X' p
set trust-ok False6 `% U4 S) {6 ?0 K" W) ]

) M& e/ X! ]# Y% Z
5 n6 \2 ?2 |3 i4 ~/ Q
let max-trade-times 0
3 ^. z' b& r! A7 s% U. Gforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
. W' h; i2 [# M4 T) R) i  q: Jlet max-trade-money 0
- @% X* V0 r5 Q/ f1 Pforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]3 H% O; B& u9 b3 E7 A% L( ~
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))) \6 Y  n' L6 D/ X, \

; ]: L2 j/ K1 e* u, X1 e

/ ?6 C2 s6 W% J6 a5 c: Vget-global-proportion
( I9 L. G: U/ e( w- e$ S7 |4 ]4 e( Ulet trust-value
8 e4 S" r. [+ E1 s( o3 y9 D$ qlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

* Y" ?8 z5 n* q' B' j3 I* _& }5 `4 zif(trust-value > trade-trust-value)) S6 I7 K& b0 X, p. M( `
[set trust-ok true]0 O. e: a. Y( Z/ ?8 F5 a
end
# e/ C& f5 k. C. ^: I1 a7 R: n' K7 P' Z# t& X# g0 e/ D
to get-global-proportion" j! [) t* l7 b- I( S7 x  ~) k, w
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)$ h  k5 @. S, e3 O0 A: ^& Q5 c/ [' @
[set global-proportion 0]8 A* ^7 T) g$ I. I
[let i 0& ?+ a7 M) P: F, O/ e
let sum-money 0
" Y4 G' k; _0 e+ O" k# pwhile[ i < people]/ p* j3 }5 d: \  X4 u
[( l' n" Y9 f0 G' g2 P
if( length (item i7 Z+ X! A% V' ^7 j& p8 C& [/ }
[trade-record-all] of customer) > 3 )
5 N* e' A1 x4 @$ e. w% A7 o
[
3 i' ]. ~  Z4 {1 p1 s8 ]' [set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
% ?3 a$ P0 b4 l]
+ m/ X: p0 W4 L3 x$ _]
1 Q6 e+ e: ~! ^! blet j 0  L! G( d( i  g3 g: |* e
let note 0, r/ `0 @% H6 d4 X/ Q. S- R
while[ j < people]2 s* i3 G3 D+ [- v! C
[7 ^( V, }! d' u0 _
if( length (item i8 H9 M8 d" s4 y
[trade-record-all] of customer) > 3 )

8 ?7 o; ~6 [6 |; \, C: D[
. ?1 L' m: l9 Z+ ^) w  b0 Lifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
8 K8 v$ n9 p2 p[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
* S& X6 k2 ]/ \6 X7 h[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]1 c+ C% j$ @0 q
]
2 z  q8 h) l6 i3 P+ U) G]3 B( S8 X+ U1 u% z
set global-proportion note" {  v, S% k  d( |! S3 e1 ]
]) [5 S+ {3 P/ {4 D  o. C/ @
end1 U: P# _* Q6 h4 c2 y2 E) B! n

, i% U- ?( m, U0 s2 @8 O; \# gto do-trade
8 ~; e4 b, j$ q  R, M;;
这个过程实际上是给双方作出评价的过程# V' W% @: e, P! B* I$ k# d$ r. {
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
$ E+ K; X0 c6 ^% q- X4 Vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
9 r/ K, ^" n& b# o  i) u3 bset trade-record-current lput(timer) trade-record-current! q) Y) w; E: h3 n8 w. O! h8 u
;;
评价时间
3 g. ~& e% i9 T! c# R! kask myself [
" E- ~" T+ H( ]( b# y- r! B& s, eupdate-local-reputation, c* X0 H( n$ J
set trade-record-current lput([local-reputation] of myself) trade-record-current8 H+ O& L# G7 Q
]
" }. S0 Q$ z2 G7 eset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself$ [. ]; h6 R' S: L/ j! w
;;
将此次交易的记录加入到trade-record-one9 {7 _" z: d" ?7 u5 y5 x  D
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)$ y9 b" Q( |- y3 n" L+ [0 J+ J4 v
let note (item 2 trade-record-current )+ S5 a4 t  T$ Y. z% Z
set trade-record-current* n$ ~! a0 N) D, [& `. A
(replace-item 2 trade-record-current (item 3 trade-record-current))
, e) F! q. C5 t1 s/ D4 e
set trade-record-current9 c, n3 b* [; {9 }! e
(replace-item 3 trade-record-current note)
6 Q8 c, O# G6 O& N; U
4 C3 V- N0 {! _  \# K6 ?
. {6 K; I' N4 G) j
ask customer [5 M4 R0 y$ {- H; z
update-local-reputation
- ^; W; Y7 n" Z2 i9 m% Jset trade-record-current
" T& E* J1 ?+ S/ r  M( q(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
( k# j( ]% M1 e' h. X' K
]7 |# j* H+ t3 [) U; R% T
  O- V% N1 Z4 V7 H5 b# I- F
, D% a$ U% w' F& X/ `1 w9 q4 h
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
; W9 p1 S- U: N: u6 o

+ S& U+ j  F: x/ \. |/ wset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
; [: u% J) C- |0 x;;
将此次交易的记录加入到customertrade-record-all
/ m0 ^* Z( E2 {* b# |; }6 Send
% G& N1 V$ w/ O) i7 {' {3 i* i+ L2 n* K! f3 G8 B
to update-local-reputation+ Y. Y. |0 |0 j1 Z4 O
set [trade-record-one-len] of myself length [trade-record-one] of myself4 e& B- t8 Y+ T) r' O( L( M
+ v0 ?6 W" w% r
7 o2 T2 f- j3 E! L) }! Z6 H5 T3 E
;;if [trade-record-one-len] of myself > 3

. z/ E; p( z: {4 j- P8 n( C$ ?update-neighbor-total% j" c/ N  m% G7 `# t5 \/ R* m1 X
;;
更新邻居节点的数目,在此进行
" T& N# C- a, O; z# s, d! ylet i 3+ n  m0 |) K$ _* z) S' w
let sum-time 03 Q0 r- a8 [% t# g
while[i < [trade-record-one-len] of myself]
( P' E, e4 g) c, q2 `9 {[" h  C; h, A7 ^$ c3 a
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
  E- E. n8 T) F, t8 Iset i
" M: D6 `" Z1 _( i + 1)

; u5 O+ m+ W+ n# L( Z: B]
7 f% j+ {6 h5 J) v+ @9 qlet j 39 t2 X7 V3 g# v1 w( f
let sum-money 0$ Y1 `2 B6 R" |) ]1 Z% o8 x/ V
while[j < [trade-record-one-len] of myself]
5 q; h1 {1 x3 @* Q[8 ?1 R# T$ y! Q3 x
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)2 R& T* P6 o) M+ ?
set j
" [$ r' A& w$ O5 U( j + 1)
# j# f3 i2 V0 D
]
# v7 ~; O& j9 D2 p% W" Z4 Nlet k 3( ~1 q+ m6 O" F* B1 X' L
let power 01 i' C; l9 o; E3 n6 E/ R- k
let local 0+ p/ j/ @' w* @7 \" o+ K' M
while [k <[trade-record-one-len] of myself]/ C# t5 A* `: C1 z4 ?( q
[
# p  S! V4 P& u& r& ^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)
( f: Q1 s0 K" W0 ]set k (k + 1)/ W" q2 L* F6 t2 ]$ a* f7 @
]
5 U- `5 g+ b) P+ c; f4 vset [local-reputation] of myself (local)
" m' T' w" z/ {/ s0 ?$ O" x9 rend1 i5 }" n, ?/ ~$ f+ r

) S: k  y6 ?7 L# |7 A5 [to update-neighbor-total& M- o  s/ n0 u8 C
) t4 \% R' O- |/ x# U1 J( z# o
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
$ Q$ `6 L- J1 M/ I% R) a% Y- d, e. @

/ Z6 O2 f: B$ m2 Q# W0 d" h0 Eend
- d+ E* R) A1 Y/ [$ B7 S' t& ~6 k  l$ Y4 A9 R- ~. {3 A% t
to update-credibility-ijl
/ e% g( Y5 ~& W1 E# [1 ?
! c2 @! v! ]* i0 N- w;;
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。6 Z3 w; d* s/ Y% T$ }' [3 h8 G, |
let l 0
0 ?- ^* ^# u( Z) Gwhile[ l < people ]
5 }8 {  }: E" K$ g  E- }+ ?;;
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- H( z3 U- F" K6 D! m8 w3 s) H
[
( S  [( n( F9 T% k9 ?3 Mlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
8 N0 H* Y* ?( N/ u" X8 jif (trade-record-one-j-l-len > 3): y9 ^! J- m9 U8 \
[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* ]; E0 T* b6 q7 r* G
let i 3
8 @7 ]' U  D' {- O) A; S0 Olet sum-time 0
, |' H/ D# Z/ |# D7 Iwhile[i < trade-record-one-len]( W+ d/ }; ]3 t5 z5 _4 ?
[
; M8 _* z6 f& F/ |9 |+ c4 @set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
0 ~7 p$ ~( a; S: s( S+ Q' k: Hset i. v3 ^" |; `( ?1 l, q
( i + 1)

% s) P( P1 c, {$ I5 \]) X; C5 S$ c2 I, g& y
let credibility-i-j-l 0- P% n2 a+ `  t% P
;;i
评价(jjl的评价)
0 _% f# G9 w9 N" slet j 3' U+ p* P# a, g9 C' U
let k 40 l& `3 B% t' p2 h" n
while[j < trade-record-one-len]
6 U7 F2 O8 s/ e3 P( l[
; y3 L7 P$ m9 C  dwhile [((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
' r* a! D. f4 D' I, lset 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)
' H5 H7 _( t' J5 g# b% cset j
0 b; r. a! _& U6 q$ X( j + 1)

& b+ w6 X6 W- w]. ~+ f2 [" g$ l" f
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 ))
' {2 [! R+ t. T! b' Q$ x0 G/ X3 c( B/ V: P7 q' D6 |
  m' e% e, W- ^( T
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
/ r% }0 a  Y& d& e, V( K2 J" B;;
及时更新il的评价质量的评价
- r- X2 F2 D; l6 V" O1 _8 cset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
- A- }1 T) s5 A; v# q: wset l (l + 1)
" F- H& G" R2 {5 r5 W# ?0 G! j4 I4 k]+ J6 e$ @4 n2 V' Y" V  x) s4 Q
end4 t. k. m3 D% [6 T0 u8 B
9 P+ E/ z8 z# L" c; `4 v8 T7 Q; R5 z/ h
to update-credibility-list: e7 w) l4 D( E
let i 0
) d1 k: f0 [& W; \* e6 vwhile[i < people]
8 \) L2 @* \' L' y/ }8 \$ _% [[3 t8 o. B" ^2 K" Y5 \5 K
let j 0; E# Z5 Q' j+ }5 K
let note 0$ \' ]. l$ B5 y
let k 0
0 h9 Z4 F( b6 _/ I0 ]- n- `3 l;;
计作出过评价的邻居节点的数目- i& b0 y( n  I9 O
while[j < people]
) J- t$ R$ F1 l, ]$ _# ?% |[
* y2 {. D4 z1 \$ ?if (item j( [credibility] of turtle (i + 1)) != -1). q4 M& c9 @9 u2 B- Y8 M1 u
;;
判断是否给本turtle的评价质量做出过评价的节点5 }6 V' o8 h& h, _( t8 A' K( P
[set note (note + item j ([credibility]of turtle (i + 1)))
* ?: X! \. g4 a0 t* m( A( w;;*(exp (-(people - 2)))/(people - 2))]
$ U# `6 R& ^9 e6 P! k8 W: ~/ u
set k (k + 1)
9 f6 R! P- ^: ?3 `1 K6 j]) y0 P; q+ m# J# z, d) n6 b
set j (j + 1)3 y9 U3 h* C: s. K* a* n4 J
]. l* i, Y3 q- h9 Q- q
set note (note *(exp (- (1 / k)))/ k)/ ]& }% w- a! N1 s5 O
set credibility-list (replace-item i credibility-list note)! q- f* M, u* K6 ~: v% ]7 Y4 u
set i (i + 1)' q& G5 w/ `3 f9 f
]
  [2 }: p4 l0 t/ P0 Jend
. t+ F  k4 L4 C  Y: P0 Q& A0 ]: G3 e( X) w. Z
to update-global-reputation-list
2 y5 E* u4 L$ _0 |8 j5 u6 Clet j 0
0 s; `  j5 n) ~# q* k0 iwhile[j < people]
( H! S4 ]' k# L) X[, _  r7 J) v7 k9 M! R# ~5 B
let new 0. T5 X  A0 y/ T7 ^9 g5 Q. P  {) @  S$ D
;;
暂存新的一个全局声誉
2 ]& u. c: [6 N" j- J1 Tlet i 0
/ s. t- Q" h: f6 {. vlet sum-money 00 Y6 X; ]: U% K" g' ]
let credibility-money 04 H! b& ~% A# n
while [i < people]
. K+ Y$ F" B/ \  Y[8 t: x$ z5 e' F6 }1 u2 K+ t
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))' Z: w3 [9 O& x
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)): Z' O9 q* z0 F8 Z+ l7 E
set i (i + 1)
5 K- T9 p& p* g. ]+ D]
3 H; X3 q% B. U3 [let k 01 u% e0 ?3 A+ b* M- j5 G
let new1 0" R; K5 {4 n% o; ~, M/ c
while [k < people]& \& g: Q% V, Y9 @+ s7 P7 \* R* S
[5 q, D) `3 u# g9 ]: E
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)
4 }9 V. w6 z9 o0 g5 M$ U6 jset k (k + 1)
6 K; _" c' V6 p" t# n]' {/ f& L3 E" C5 L5 L7 i" ?$ E
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
. ^: I- e7 I3 w; {set global-reputation-list (replace-item j global-reputation-list new)
  v& P# v' x$ r/ J# ^set j (j + 1). A' f) @: B7 F- _% h- N) L
]
; E8 U% y$ V# Jend1 g3 u- R0 f- p. b" |! ]* n% ?1 v

! O- d' Z: K$ i3 k+ S% C: U
3 P) ]( s4 q, T1 \; r  l! ]% o" a, v+ |, d: q6 y% O
to get-color
# {1 q) H# P( k& R9 i
6 C5 S7 ~, o) o4 X1 m2 s# Cset color blue
% k% j# \5 z  J$ z8 r
end
4 t; ?( p( A9 C. a4 F7 k6 m8 @8 }: u; \! A
to poll-class
$ n, s; f0 \8 B  F- [end8 s1 A/ m0 R! O0 c. o  D- N! o

# C  T1 y* Z- kto setup-plot1
1 s0 q* |4 t5 J& Z# H, a) P+ I8 g1 k* s
set-current-plot "Trends-of-Local-reputation"

# X/ }% J# {: [. |* u2 z' i7 B/ q2 j; m# u! c+ ~# \  P% v$ {
set-plot-x-range 0 xmax

/ G! L8 |2 A. K: z% d
; S: }' N: C5 m& D) cset-plot-y-range 0.0 ymax
! [4 y) f( i1 Z( ]0 O7 B; Q
end; }8 W- n9 T( @  b# c

9 |3 s" x& ^; G. kto setup-plot2
& F0 v1 `  K! T7 O& R3 {4 z3 j5 n& D; h
set-current-plot "Trends-of-global-reputation"

0 l; A- }: K! \0 Z' r6 d& d( ]! E  F( p- ~; S4 K
set-plot-x-range 0 xmax

8 [& s8 `4 D9 n, t) u" E( V( Y3 b$ V( g& P# w
set-plot-y-range 0.0 ymax
) B3 k0 ~0 g. ~: `) s
end# c" k# K( Q8 X: c1 z3 x, I1 b
# A. U( T, I4 O* l7 c7 X% ^1 H
to setup-plot3/ g4 a) f9 Z! x6 q0 }+ u7 D

& O  x' i7 O$ E4 Q' l& q  fset-current-plot "Trends-of-credibility"
3 o2 ]. C3 ]% H1 M
) @  f( \1 h. \2 p# @; E. n
set-plot-x-range 0 xmax
5 v: {/ C- ~3 U7 S/ c7 m

; T* a* I9 _: k1 V9 Uset-plot-y-range 0.0 ymax

$ x4 c9 C- n# Xend
) D" n6 ?7 |1 m, a
8 h  l. M, E! x" a. G$ C" Rto do-plots
2 Z3 g, j0 c5 qset-current-plot "Trends-of-Local-reputation") y. M% D5 i- h
set-current-plot-pen "Honest service"# s0 ~* F# \! B9 G8 m* X& r
end
. L9 \$ e% ?3 L1 ?& j
7 z6 i2 |" X$ L- T! M[ 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.
& L8 ?3 |2 u1 ~* L5 c3 }- Q/ d
/ r; h* U. Q% s9 t) H* x这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
您需要登录后才可以回帖 登录 | 注册

本版积分规则

QQ|Archiver|手机版|SimulWay 道于仿真   

GMT+8, 2026-5-21 09:05 , Processed in 0.017831 second(s), 18 queries .

Powered by Discuz! X3.4 Licensed

© 2001-2017 Comsenz Inc.

快速回复 返回顶部 返回列表