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: 16777|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 Z0 l9 G  I" hto do-business   L- S! B1 _2 f, t) n
rt random 360  p, K- ^1 E: g% v/ v2 x8 J
fd 1; e$ c6 D3 i9 ~, H& B7 q
ifelse(other turtles-here != nobody)[
$ N" p/ N, l- O5 t9 X   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.
& }# K5 J) l8 G: `   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    + Z1 E0 f4 Q5 S7 J' ~9 }4 B
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer1 r3 b# n( J7 Q- F7 D* M+ k/ ?
   set [trade-record-one-len] of self length [trade-record-one] of self
7 t8 d. J, U3 B* P   set trade-record-current( list (timer) (random money-upper-limit))
0 h4 L8 M6 X+ M
1 g) ?1 g' H* z, z/ D问题的提示如下:7 O9 P  A1 }0 ?: t2 e# u% V
" ]" K  a/ s9 g4 |; ^
error while turtle 50 running OF in procedure DO-BUSINESS
3 L' N) f: d* I& b) X  o: K% l4 v& T, o; d  called by procedure GO  }0 {" `4 e6 v, ~
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
8 r8 m' k" j4 }0 j3 e
(halted running of go)
1 G8 ?* b6 Z3 f( |" i1 a# b9 B* S9 q# V  h: A3 W) D
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~~. R7 t$ I" e' _% c. v( ?5 x
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( I1 N+ V* M; k; h/ i3 i! r* y
globals[( q: ~3 A  T. \7 [# t7 E# v1 o
xmax
2 r5 \/ \, x; ^* S# S) M* q) jymax
. A+ G: W* q# f9 r6 d1 E9 Z, ]) M( iglobal-reputation-list
" }- a: D$ }% D: |& p5 L6 \' m! h9 ]' C! k: m# X! r- r1 z8 P( h
;;
每一个turtle的全局声誉都存在此LIST. a, U$ `) ~( ?) l; R7 |0 e; u
credibility-list  ]$ @* M8 u9 C$ O* K
;;
每一个turtle的评价可信度! I% [$ a, x0 ~0 A: U* W! u
honest-service% h1 }, x9 J  D. Q
unhonest-service5 h7 L* @+ t  v
oscillation
! g6 O. n$ @  e' N( O9 crand-dynamic1 K7 l5 i7 a4 S) ?4 I: y
]
) W2 T/ q9 Y) K
6 F7 ~: d4 J' j5 Mturtles-own[# |) B( f  s* B4 k3 p) E  B4 |
trade-record-all
" m2 @' m- N4 t& V0 z6 d# V# X; m1 E;;a list of lists,
trade-record-one组成
0 p" _, z6 {! f$ i! @; t7 s8 Ftrade-record-one
& n* A# o' v* J: I* U2 V7 {;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
2 \0 H7 g# l( @) Z7 o/ y$ _
* E& M/ `3 r. B; a;;[
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]]) v& L: T. k# Y5 I7 C
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]8 S& q# P" M. G4 O
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/ C6 ^" R; W0 z1 X% }  ]
neighbor-total& ^2 e# @. e+ a  K3 s
;;
记录该turtle的邻居节点的数目
) |! G9 P! s( s2 wtrade-time* W: _* I3 {& |7 i2 D1 z
;;
当前发生交易的turtle的交易时间; c! ]6 B" {  s8 P9 V
appraise-give9 R- H( g5 l7 a" M
;;
当前发生交易时给出的评价4 W8 ~# z- \& p
appraise-receive5 n: t4 T# j$ g2 Q3 |8 u+ @
;;
当前发生交易时收到的评价# O% H4 S: F# @1 N5 A
appraise-time
& S: X. _6 J4 L4 k& @- O;;
当前发生交易时的评价时间
; C' p7 I/ U6 I, V$ F" q4 g1 Tlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉2 I0 y  S7 {, {. ~; R# O
trade-times-total; L% k  O" k" m$ Q2 g" ^
;;
与当前turtle的交易总次数
+ {7 T! d$ N" i4 _3 ~( mtrade-money-total
: `* m! P3 ^0 Q; \/ [1 f$ y+ };;
与当前turtle的交易总金额
/ h; W3 z- {1 G5 @& s# M, a  }# Llocal-reputation+ |5 o& Z( W' C/ j9 O  B% V
global-reputation
4 `. E1 |' x* ^credibility
" M% U2 H* r5 |( w: Q( ~/ x;;
评价可信度,每次交易后都需要更新0 x$ R5 W9 R3 i
credibility-all$ N5 }$ b1 ?5 k( K! ^
;;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+ N9 n. W1 W5 l0 I
3 a# \0 q. R6 q, J2 s; u4 K
;;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* k6 {* [2 }& Z! ?6 o) I, h
credibility-one
! M( j6 {  Z. J+ w: c;;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
9 k7 Z. \" N  Qglobal-proportion
  |: n* A; `7 i( R% i+ \$ W; t1 jcustomer, d1 n1 k! Q# B7 M. K% U* [) r
customer-no
7 P% K1 c! b; [trust-ok: L' A8 I8 L3 a5 h6 e
trade-record-one-len;;trade-record-one的长度! z1 }+ k# i- R: y( U
]
5 X) @& w& z. I, Y$ t  K1 ~+ S1 _+ s# k& p# w4 I. z$ t* Z2 d
;;setup procedure
4 P* T2 @$ y# I& ^6 b. ]
& c/ c$ n4 W6 n1 V. U$ eto setup
$ b; x5 F2 Z$ j  R& u+ e6 z# M( i1 u- A" B) o1 k. j2 ^. n- e
ca

, t4 E$ J/ A) ?0 Y& L. a8 D9 R" `% D* l/ A$ G
initialize-settings

" {# [5 S& L- H5 Z: Q9 q  K& u& A9 @" s
crt people [setup-turtles]

. @4 ^" f9 f) q4 V, @( _; w& g; K0 g- [: D
reset-timer
( d; n  m; \# f

' e& A- t5 I) r2 L9 ^poll-class
2 B' n( F! G! V2 A

: w) J  c/ c. ^& ?; nsetup-plots

# d* r9 W6 c3 M; L0 e' h5 J6 z% N+ j4 {2 x! H
do-plots

' S4 G& j* F$ _. Qend0 j+ |$ c( g4 L/ r( f
1 Q& b" ~8 Q& s- q4 F! Z( k
to initialize-settings# Q  T& N5 z5 z+ N
2 {* Z9 f- |* H' G& F6 w
set global-reputation-list []

- Z* p" q& A3 n( P3 c
( n: i& m# |( ]( F# u% o: U$ g! Nset credibility-list n-values people [0.5]

6 O5 k  s7 l# j: w$ P
: Z7 t% M+ t0 F( qset honest-service 0

& Q9 |5 [8 B1 Z  T
$ T8 Q, r* S  H, D$ _# P: ]set unhonest-service 0
- w2 R7 h7 ~' F
7 f8 R& x3 ]/ l$ m* `
set oscillation 0
( Z- `9 {  I1 r* S) Y! j' W- b, F

: r9 g* J( y: C& }2 wset rand-dynamic 0
7 F7 B/ J+ }8 `- x8 f
end0 \, @6 G: _+ j0 r
; ~5 a8 ^* @/ c! b6 q7 O5 I
to setup-turtles
' P8 M+ R' }/ t0 zset shape "person"
  J$ O0 E! m, r* Asetxy random-xcor random-ycor1 w4 r9 I( _! ]% u
set trade-record-one []# s9 r' Y0 `% L$ B7 s; Y2 P

  w) p+ i& `  {% M5 G/ k1 l0 Zset trade-record-all n-values people [(list (? + 1) 0 0)] : ^( {' X5 E# i5 x1 g7 j6 v

( {- Z# E* e9 ?set trade-record-current []" E5 ]' e0 I6 t# x+ ?9 p4 R
set credibility-receive []
# g2 F2 R: D* Q1 T6 Z( e. L; iset local-reputation 0.5
  ]( S& t" U, O9 {2 M( m" V: wset neighbor-total 0
, @. }2 i9 ~: g& L6 \0 P) y) b) [set trade-times-total 0$ q9 D) H' k& D/ W' E! D
set trade-money-total 0
/ [( C1 w& G$ X: V( Kset customer nobody
. p$ P* u. `2 L7 [7 x. @2 Cset credibility-all n-values people [creat-credibility]
! M/ o1 w+ M* q  Eset credibility n-values people [-1]5 W; Z# v% G+ V' F
get-color4 Z, }1 ?3 p* N. \9 n$ T

+ W+ R) e$ D5 Lend
$ ~% V$ `3 p! l
0 Q7 {6 z+ U  ^+ r* tto-report creat-credibility( \6 f7 G7 A% W- a" e: j
report n-values people [0.5]
: F7 s7 ^" R2 [" T' rend% h- l6 P7 S$ W0 y
% ]7 g+ m4 w0 P/ I& K$ |' }
to setup-plots
& [4 P' Z( f2 H0 v8 S
  U( _: q9 y, O  ]9 K) gset xmax 30

! X, H$ a5 H1 v% D; M6 q9 ~4 S: O& x& i9 ]
set ymax 1.0
" j# w1 U; B; c! h5 q1 V

' C1 R- |! T8 H8 L  X* k0 n. k' v7 pclear-all-plots
* X+ c8 D, S; O

) ?7 A% v1 _9 c4 Z1 S1 ssetup-plot1
$ ~; Q/ M5 f0 V/ c

" [) `8 Z# |$ ]3 p% F+ L* M; xsetup-plot2
" c* G2 k; P2 n; G% H- W

# D8 J  L8 d+ u4 f, V) {) m$ Hsetup-plot3

, k6 \. l! T" kend; |2 f/ ~( H( S, H6 l
& l! ~5 Y$ j- K7 x
;;run time procedures5 j0 y; J$ Q" E0 [

& z3 X9 I9 g) J1 z3 k9 T7 H' l. Y4 Yto go- W! r3 _* v+ e9 s7 B

3 E8 ?( B! ]6 L- kask turtles [do-business]

, O! m% c' e, K& w3 Tend) w& ]( Z6 P* w

, M5 b  r1 {6 B) q+ Dto do-business % H: b$ p8 K  Q9 X. ^- V% ~% X5 i

8 M' V, O) _; o& w8 {( N% Y5 [0 {# g* i+ m, F6 P/ O, R
rt random 360
: d. V& A2 {( [9 O
$ R4 T4 d/ {% p; F6 B" N
fd 1

& S, M, M9 l, ]  U8 a' ?0 j9 h
/ O# a7 q  l. J3 s& _$ Fifelse(other turtles-here != nobody)[

- ~+ _0 f$ Z- H+ O2 Q. d- G& K/ @2 ^# g% }2 l* b1 ^
set customer one-of other turtles-here
( u: b; k* P4 Y/ i* R# J' P' f. ^0 \

  h8 j; M! O$ u/ U3 k4 z4 D; c;; set [customer] of customer myself

, C3 H  Q& A+ I/ u$ z, B; B; B; R" x" k" r
0 `% ~: `: y$ J& J5 cset [trade-record-one] of self item (([who] of customer) - 1)
- V9 a  K! J4 F8 j$ _6 q[trade-record-all]of self
% r5 Y1 N, [, j  u;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

8 ?% F6 m/ Q" }% d3 Y5 e
% \6 n( @0 \  r4 M$ W# r% y, C% \1 nset [trade-record-one] of customer item (([who] of self) - 1)
1 o+ N  N- o, ~! i$ f[trade-record-all]of customer

. W" I+ X7 X6 a% h- z4 @, A
: [  L7 o$ {$ @% k# ?set [trade-record-one-len] of self length [trade-record-one] of self

2 K  j$ z# q( ]. z. p- K
- z! ^: d" I; mset trade-record-current( list (timer) (random money-upper-limit))
" q$ Z4 l, [  q
6 s3 _5 v& V& O
ask self [do-trust]
2 [6 H8 t7 F( o. l;;
先求ij的信任度$ r1 O1 [0 q( w6 S0 U( B

$ z$ f* b5 g( I" ?  p: Sif ([trust-ok] of self)
4 _2 n! S3 y8 N+ M: y! U5 o;;
根据ij的信任度来决定是否与j进行交易[7 |! X1 G2 q% d/ F/ t$ o, W) Q
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself: m/ ~, ~# U; C
! Z1 c3 D& R$ D( P
[

4 s1 G! K) f7 i8 P" N8 i2 C6 V* U4 b3 X
do-trade
% E9 D3 [0 e7 ^, f1 T" Z7 b

$ R5 l  {0 O; Kupdate-credibility-ijl
. E6 N# T* \; l0 g

2 I, @8 E9 U; }- p) Yupdate-credibility-list& H4 I9 P# `. A( c

5 c9 {! t" k1 W7 a6 B7 L& A
, x! M; U' K9 ]9 o9 m3 ?update-global-reputation-list

! S+ v- Z7 y: c, `3 V, U* i7 h$ S
5 n( d; ^# g5 Z: p( U2 x: Ypoll-class

+ }. E% i  d& q- D/ @0 s9 l5 c+ ]$ k* G" q
get-color

, E, k" o- L5 m& u- U
& \; y* V2 p1 v) B- t]]
4 N; X8 q/ z4 M& O4 \* X) {
/ g# U; Y8 V6 o% x1 K* S: a3 i- s;;
如果所得的信任度满足条件,则进行交易
8 p" F* r, z( W9 o8 u: U
5 S% l% L( i2 J% `[

' c" G: v( T5 A8 b& e
7 A3 r" h1 V  T3 `1 ]1 f$ `rt random 360

. G3 R! l0 O/ j5 x! U8 S; L5 `$ O' r- Z$ r% n8 S9 w
fd 1
: X  l" _/ J9 G: ^! B9 t% N

2 ?9 a% N' U% X]
$ v8 d+ v9 q& ^+ ~

: G7 _8 Z6 u# n! T9 U2 e( xend
8 Y' G, N* h: c9 I8 Q# G
, ^; O6 n' j4 h
to do-trust * z9 f9 U5 @6 M' ?+ K' [
set trust-ok False$ u2 c; j2 a5 p/ m' m) e3 t  D

  T9 {) _1 J# b5 H

- t1 I4 ~& f0 N; G* f* alet max-trade-times 0
( l- K5 N6 |3 n3 Rforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]/ ^/ D% R5 t% Q9 I
let max-trade-money 0- U! Z7 t( R2 F, p# q* i( l
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]5 e) |, b& ]1 n$ _+ E
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)); K% m5 q* a' F- U4 d# ~

- t5 o& H' v4 l# d, `
8 R3 J( i- d/ ~6 D: h; {+ ~
get-global-proportion6 T3 C! @% l: l
let trust-value
, B- O( T8 @/ S- Flocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
% u! K; w' q8 x; H2 ]" {
if(trust-value > trade-trust-value)
0 W8 r, F+ U2 X* T  @[set trust-ok true]
( g! \7 Q/ j# R  V$ p9 J9 \& Q/ Yend
: n% O! E7 A- S# I- N, @
  b/ [6 c+ u& e' `to get-global-proportion
6 {; `7 ~3 Z. h4 tifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)5 X. G8 a4 k  i, m; g' `: J
[set global-proportion 0]5 g+ d) m8 U* r. y3 A
[let i 0+ a; V, U/ X$ t, ^# I* Y5 r9 z
let sum-money 0$ N  R( R, s- y8 ~6 ?9 E- X9 h. l8 g
while[ i < people]
5 L; v) [2 ]* h4 \/ [[
" [+ W& Z* Q- e; c! q: ]9 }if( length (item i$ j- T7 `2 L/ I
[trade-record-all] of customer) > 3 )
1 _' n1 Y/ X+ G2 j; v
[
, a7 Z& @: v  p2 @' W8 cset sum-money (sum-money + item 2(item i [trade-record-all] of myself)); E5 ?' G- w" y+ _/ S1 u
]# m! d# f" I* ^; _9 j; E% c
]
7 K# f/ k. b! S: f7 zlet j 0- a2 a& _. T; @! j& J1 o# U" [
let note 0
* ?: l# i$ ~1 X% }- C8 [6 t9 Hwhile[ j < people]
5 r; u. i& ~3 `3 G! O  d[* o( }3 Y0 r* e6 y0 ]' k
if( length (item i/ u& ~. C* k9 |+ Z$ A6 ~
[trade-record-all] of customer) > 3 )

* C. w& A, j0 \1 e# u" d& Y[5 L* |- o) A: K+ h4 p- N
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
, q; g2 y# [% \1 ][set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
* y7 B8 _4 y: b6 a% y% [[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]- ?! R1 l. a* @3 V; K. ^
]2 W3 P2 G' R% Q% [. G6 u
]
7 W' L& I. ^# ]- p/ Qset global-proportion note5 j" F7 C* q: @% e+ B% G# }9 n
]7 z, b0 b* n9 w  j
end" F( {  j+ U. @  N. ?5 C3 D  ^

% m, D' V1 k0 ^, W' k% Gto do-trade
' ~% p' r( ]8 r, K) n8 }4 A% z;;
这个过程实际上是给双方作出评价的过程
+ e0 W$ g; T" {* Fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
, ?8 k9 `$ y$ sset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价% S7 J- }) Q* V8 U  b( j3 Q
set trade-record-current lput(timer) trade-record-current
  P' W, s" [( e5 `7 e6 h' B;;
评价时间+ M5 }7 l0 l9 D$ x9 b1 s0 ?& k5 V
ask myself [
0 C' L% n/ Q2 A9 D6 D: z& P! Aupdate-local-reputation6 l/ H4 Z* c3 H3 O! N) `1 a
set trade-record-current lput([local-reputation] of myself) trade-record-current! b5 y$ `" R5 o; p7 S
]: d7 d" E2 P  o  v  V8 s9 e) _
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
% d; t' V: ^" g. U  D3 K;;
将此次交易的记录加入到trade-record-one
4 o% d) @* h0 J, w* i- cset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
# |/ a  T$ {# m1 ^, Q2 O2 Tlet note (item 2 trade-record-current )' `& s. C* v/ |! g. w
set trade-record-current
. R" n. M: ?  q1 e* y(replace-item 2 trade-record-current (item 3 trade-record-current))

- W* m7 l, w4 n1 F* E3 ]set trade-record-current- g3 g& P2 A1 W# c+ t
(replace-item 3 trade-record-current note)
* Y' R% Z* j" \0 k8 ]$ f* K# L$ h; p; n$ B# L8 f- H+ f1 d
- Y. f& R! f- }$ d; M, ^
ask customer [
9 a' X1 n- H3 P5 H" U+ K: |update-local-reputation' x/ R' u- O! p' f% d! o
set trade-record-current
5 q6 r0 ~  E% [  o, j/ J(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

1 g# ~( S- f" C( J) ?6 ]* v9 w]" P; H: s6 d5 A0 c1 Y
. N4 f1 |# u. S6 @
, o" E2 G& C8 c$ w
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
! g3 A- K/ A, K* O5 O) T; z
* v% Q( W. {( N4 S8 i
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
9 G: F+ [1 C; h% C8 j;;
将此次交易的记录加入到customertrade-record-all
" v& G2 Z' K# K- U, A$ ~4 qend
4 ?3 @# d7 {" X( F" {6 w9 J) I, }
) C* m; C8 I3 X  ?: `7 I5 {to update-local-reputation
+ |5 k/ E2 {) |, ^) ~& wset [trade-record-one-len] of myself length [trade-record-one] of myself: F" \  k* b& p+ D

- U+ O, v8 N+ V
% w1 S# d2 u) [, [2 n( U;;if [trade-record-one-len] of myself > 3

2 f' \6 Y2 G9 D' m& o& g( F7 xupdate-neighbor-total
6 {* q, n( a) w' @( H: ]8 M;;
更新邻居节点的数目,在此进行
. c( J# D2 X! e' ^# nlet i 39 @1 ]7 `; B: T+ {
let sum-time 0
  V+ T! e2 N8 G3 Zwhile[i < [trade-record-one-len] of myself]
) l; l" C  T- T$ W9 w[$ b& o5 K; R8 w0 L1 G& F
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
: U5 r0 Y5 H, C! I7 aset i9 ?4 \0 C' o' A* p3 O2 ]
( i + 1)

: F( e8 f. m& H4 s% \; ]]
4 \" \3 {1 P  w9 ]* B4 P, ilet j 3
4 t! v% X5 T1 o3 s1 ylet sum-money 0
8 A- m  T* N4 d5 T: x4 {while[j < [trade-record-one-len] of myself]9 n1 D  c3 `2 g6 d8 F5 M* Q
[. X/ A4 F" ]6 [0 P. S1 P# U
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)/ E( E$ y; m8 O3 S0 H- C& ^
set j2 Q4 g# X. X3 Q) n  h$ N- q
( j + 1)
1 a( A& _$ v6 C
]
0 z, [$ a+ _8 X$ i' T0 y& p6 Nlet k 3' I0 C- M& ?' H; J4 |# u  m2 Y
let power 0
7 y# d9 m) [7 n* C0 _2 S! g: tlet local 0
. ^8 A, c0 h1 p1 N) Hwhile [k <[trade-record-one-len] of myself]
4 K; G6 W2 [' p/ A[
- U2 W  K$ e+ x* @7 h1 ^) h# f7 Bset 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) " M5 n: r' J4 C, R% _# @) N1 S; B
set k (k + 1)3 d5 P  P$ L! r
]) F: v1 h3 a/ L6 _' b* b' U
set [local-reputation] of myself (local)# A  o( m3 G* T: h/ O' `
end
, a+ B' w4 W2 j$ u+ W, T9 R# r: p. D6 ?. y! f: W. Q: v
to update-neighbor-total, `0 q7 T5 T; v8 o2 _5 L

: C6 y' B9 [8 F) Oif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
& p7 L% L% l, k3 g3 @. w1 @6 _3 Z8 M7 w2 c  @! N

- z: R1 c6 Z$ z: U! e3 ?0 lend" `! A- k! \8 j; B
, B9 @& F5 v" A3 U% j. j1 E
to update-credibility-ijl ' U  @3 Y- N* E5 A) h

3 E3 ^; p9 I( ];;
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。" x( u8 s: Y. z3 b  J) [
let l 07 k5 D# j/ N0 ]0 Q6 P
while[ l < people ]
0 Q7 s( z1 J3 \: g0 d;;
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
! }' s5 C7 P2 V" N* C1 S* i0 o( j[
7 W: {, X) q. E# C0 N" J8 T: O7 |let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
2 R; n3 ~$ e# A- Yif (trade-record-one-j-l-len > 3)" y+ w' M; K% l* a
[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+ v3 f$ v+ C7 u) O( v
let i 37 o3 n! m1 i" p# l/ \+ }
let sum-time 0+ S( s2 _( U0 Q% T; n8 u" e
while[i < trade-record-one-len]
+ a3 `5 M4 Q7 z# K! O( [7 c[
; ^8 p/ m7 I8 [% ^* Eset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )! o" F1 Y0 b5 k5 F8 b* s
set i* b( `2 Y* T# E- u9 p, z% j2 L/ J
( i + 1)

! ~  d* N$ ]/ N9 x- T, _7 F2 y* @]
+ H5 ]5 |/ V0 J4 ilet credibility-i-j-l 0
/ ?/ {' k6 E, u2 w;;i
评价(jjl的评价)) g  o* ^; s3 D8 i# h/ [* \
let j 3$ E5 X$ P! q4 w; B( I& Q7 ~
let k 4
2 J  v- M6 |2 s4 @while[j < trade-record-one-len]  }% W/ M: h' R) M
[- x5 G6 H0 n: N, g  E
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
; N7 Y# Q: ?# E- W2 n. w& Uset 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)' X: y% F! }; t
set j
9 w- w5 j' U; p* m* ]: b/ c( y( j + 1)
- {% _$ w7 v" L7 O) R; W+ s/ u: C
]
! f. U# c; ]" c3 h6 S4 h1 rset [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 ))
9 Q' O, [8 t2 f& I$ w/ {; O5 G
. s' N( S( n& J# V

9 E+ q# _2 @( G6 @1 Dlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
# f1 N; m; t4 q;;
及时更新il的评价质量的评价2 T7 d& r# |% t( m, I4 f5 G2 g, L
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]* `0 S4 s7 j- m' T7 ^+ m3 b: d
set l (l + 1)
0 o0 v4 z. `. F, j) A; h. {]
. Y) t$ G. v# H" Wend" K# V& M+ R- m

, l- X5 M. ^0 ]9 E' O) ?- x" d9 Vto update-credibility-list
# |( N3 J" b- e7 @- P; c# ylet i 07 B2 u# ]' Q& C6 q, o4 b! o
while[i < people]. v( @/ v0 f, ]. o' S  s, F
[
+ x  F* g: W0 J6 a) K- j: \0 nlet j 0
( I5 S8 V+ N: Q% V- _. Mlet note 08 a. i7 o+ f1 B' Z! S0 R+ h) {3 f
let k 0
" a8 M) O4 Q% N+ m;;
计作出过评价的邻居节点的数目# T  s% o) M$ K
while[j < people]
; d: w' Z* S  [) T[: [, Z/ p0 Q% t4 A
if (item j( [credibility] of turtle (i + 1)) != -1)
$ E5 a% q: t2 S! V;;
判断是否给本turtle的评价质量做出过评价的节点
$ t$ [9 @# c/ ?[set note (note + item j ([credibility]of turtle (i + 1))). n3 h. q9 I, h7 n( d' P! o
;;*(exp (-(people - 2)))/(people - 2))]

2 E3 F. E7 i" C; |) G! h- U6 wset k (k + 1), U. R" s2 @, u4 j( z6 u" Z
]" w" Z% [" p( i$ K
set j (j + 1)
" H7 i+ p% K7 I2 d6 S; v]
9 e' ]2 J$ R3 ~! J# Yset note (note *(exp (- (1 / k)))/ k)* ]$ E5 \+ s; a. h" W
set credibility-list (replace-item i credibility-list note)2 Q+ x5 H( l: X
set i (i + 1)
: E9 `. S) u5 a  c& E" O+ V7 F]: `1 y' M: l& \: h
end- E0 n! w, p" q6 r
* H; J6 x$ \1 x; g! n6 f
to update-global-reputation-list
1 C8 U0 x7 ^# s: C. {let j 0
. r0 P4 k% ~: e# m5 Z- `- vwhile[j < people]
# T3 F2 E, L5 Y4 [: D[( x4 j/ `/ A# b! n% \
let new 0/ {, M/ }# c2 C1 G& k
;;
暂存新的一个全局声誉2 o$ I7 b# ^& G- `
let i 0
; ^$ u; i  d8 u! A- L, Ylet sum-money 04 e9 v8 A# B$ |. w$ ]
let credibility-money 0, Y( e  |7 C1 t; B
while [i < people]' y5 h) L7 k7 e7 H
[
0 I; f) X* P6 y. }0 b3 n3 o5 Zset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))); V/ P2 ~2 k: q1 @& U+ Z: e( L
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
, H5 E! u8 w! T7 F; G. y+ n; |set i (i + 1)6 `: ~3 {( l: j0 X
]% z& u* a( J+ b( W; H  A. W; d
let k 0+ k& q1 n: P3 E
let new1 0
5 M; V- g5 a3 c8 `2 X  D" G2 a' w7 Awhile [k < people]
- B- q& P8 V4 R6 a8 o5 J: M[, C  p3 g* c- Y0 n) P- n
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)
( X2 b* u2 O+ E$ k6 Wset k (k + 1)3 F; Q, p6 D# ^% Q
]
* V3 Z/ R4 M( q  Wset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
2 V! y8 V8 X4 }* Z4 Xset global-reputation-list (replace-item j global-reputation-list new)7 z7 u' F0 |5 c3 d6 b5 d  ]
set j (j + 1)
9 x7 h3 a+ [7 b) O" I]" j) V# _4 }2 y4 p2 g. ~# Z
end
+ q; x9 ^. o- h: @$ ~- h6 s; e4 E- J1 H% x) u+ w

# c6 Z9 L! [! H
; s# f/ @# b/ }$ ato get-color
8 k! G6 I5 ^& V1 P6 l6 s, ?! ^( U! ^  _9 ]' u6 C3 C8 m
set color blue
3 Q6 [$ ^. Z* @' C3 h5 j
end
6 g1 U# ]  E# Y/ H/ v! s
( g3 Q" @& N# t/ d2 Pto poll-class; C/ I9 y  a1 o+ N$ T' K5 |
end
& V% k3 ?: q8 o! ~# [$ U) j% G6 W; T7 m6 `
to setup-plot1# k7 [  U1 b6 k1 w2 V

" g' e* a# y" a( uset-current-plot "Trends-of-Local-reputation"
3 B/ I' U% S# p5 L" a

$ }9 e) C) m0 P# H' I; ^set-plot-x-range 0 xmax

# r% v3 H: s0 N. _& p* }& [8 ]
9 c" ?( d* O$ \+ b, i+ `1 Dset-plot-y-range 0.0 ymax
3 B0 s' d. E. g& {' q$ b* D) [7 f7 E
end' N2 ^$ {2 e/ }1 D0 H- p+ b7 B

. O" L3 E" t! jto setup-plot2- o" y" v6 Q) J

$ u/ j3 r; ?. z0 u- g% iset-current-plot "Trends-of-global-reputation"

: J+ N9 J* K* O6 W. k! F" y
* h- v, }1 C4 [1 G3 Kset-plot-x-range 0 xmax
6 o- N8 T# _; m* S  n, n' j  }

7 e" V; k( Q: h/ B  c5 X: lset-plot-y-range 0.0 ymax
0 V$ C* j7 Z  R
end
0 H+ F0 C+ B/ _% F. i; {$ T7 g. |0 Y
% }2 g- z. q7 T+ w/ ^to setup-plot3: q) D+ O1 u. O/ ~* k+ J$ ?
  q7 l# L* U* x( T0 V; M$ a
set-current-plot "Trends-of-credibility"

# \- T, ~0 _$ R1 S0 R" K  j5 d6 Y, R' H% Z& I& a3 c9 s( D
set-plot-x-range 0 xmax

; d, b! w0 j. R! b
# T, }# f0 D- Y$ ~9 S% A4 \set-plot-y-range 0.0 ymax

( g# }) |* y' F, Eend& K% o; R, j- A4 b% h  l

4 p* n( C: N( T) e/ Zto do-plots( \0 |# Y( J& e- T! ~' c- h" q
set-current-plot "Trends-of-Local-reputation"
" [5 a  [& k( f, y/ j( nset-current-plot-pen "Honest service"
; G0 p* ?. ]% }" z+ F* iend
5 Z4 ]7 n+ B# f% o: @9 \
% o1 B  b8 j* t) u3 r( R[ 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.
$ Z$ s" K7 Z: }3 E5 [5 m7 {# M2 X2 P
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, 2026-7-24 13:46 , Processed in 0.019604 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