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: 15138|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:
& f) [) F+ Y# E* d% jto do-business
& X2 e# [! G7 M  }# H% Q' i) Y rt random 360
0 J1 o! [  _* L- H fd 1
+ Z7 l( e6 H( h% |( i' ^2 T ifelse(other turtles-here != nobody)[
3 N% S4 b% M) ~   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 D9 c3 W. A9 W   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
; h% e1 A$ R) D8 X( U! m; n   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
, {% Q. B1 S& C# r2 d8 ^4 e7 v   set [trade-record-one-len] of self length [trade-record-one] of self1 ~: z/ X% }2 ^
   set trade-record-current( list (timer) (random money-upper-limit))8 a; V+ y1 W! v& s' V5 C
% {0 f) @9 q4 X3 p8 n
问题的提示如下:
' n: [1 k9 N- Q# {
$ `# x. q5 x& U( @& S) h; P. G4 U/ _error while turtle 50 running OF in procedure DO-BUSINESS4 t$ f$ P+ x3 g5 o4 ^
  called by procedure GO
$ E: N% a0 J5 j2 R! n9 EOF expected input to be a turtle agentset or turtle but got NOBODY instead.
4 u9 C. {' M0 m, H
(halted running of go)5 S4 |7 f7 `/ V# c1 v6 I  w
) M! f5 P% o7 D* W% w" W4 V
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 f) c# g0 K. s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& z* x7 w# T8 q! g% a
globals[9 G/ C" X" c( t+ F6 N
xmax  \+ X' J' Z3 x  M# V. I
ymax2 X1 q3 z; C1 k! K. K& |
global-reputation-list0 A( n) L+ _4 B0 k0 v+ T3 [3 Z" C
+ m# X, t. ]5 C7 r7 j. X
;;
每一个turtle的全局声誉都存在此LIST
  M- ^3 d8 d3 C" ?  X- Ycredibility-list/ l5 ?; l' M. K; l( A. U3 C
;;
每一个turtle的评价可信度9 @# o0 m& l9 I, _8 h
honest-service" U8 N- {1 I( K) h
unhonest-service- q/ j. h: n( d" b- z, _7 C4 m
oscillation; @* q' `) c, }' L: x: o* |/ x
rand-dynamic: u4 {5 _9 R0 L5 R5 H2 g1 r
]
! u& C8 x: G) t$ }/ D0 h
0 V- _0 g- `" u+ j/ eturtles-own[" Q0 W- L; N' K5 L( A) O: @% T
trade-record-all* s6 n( o1 T: H: s0 t  {
;;a list of lists,
trade-record-one组成* D: l( U& Q2 w6 \' K7 v$ X
trade-record-one, r0 p% j  |1 S4 E/ ]% @+ I! S, T# B
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
5 f$ {: {) x! |5 H( w& v. L3 J
$ @0 G9 X# K: E8 ~6 d;;[
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]]
: Y) X8 c) {% a, F( 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]
/ Z8 u/ \8 z+ {, v* t2 ^$ l' Hcredibility-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
' G/ g  r# ~" C6 a) m$ {- ]6 x( xneighbor-total
: j9 e6 [% Y& x6 D" D/ r& u;;
记录该turtle的邻居节点的数目
) b4 q, x* Z2 `9 q4 V- D( Ytrade-time2 o  L/ K& r% E
;;
当前发生交易的turtle的交易时间
' Y. e+ F; Y) S+ C6 lappraise-give
+ K' g% }' ~3 m;;
当前发生交易时给出的评价; s% M2 d1 [& e  O0 w
appraise-receive/ ]( G1 i  V# H
;;
当前发生交易时收到的评价& ^  c( {1 u, H0 U7 ^, T. t4 V/ l
appraise-time4 X8 G% |8 @- g5 O% B5 z
;;
当前发生交易时的评价时间0 C. d' S6 f! d6 c
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
2 Y' a; E6 I8 a2 }trade-times-total$ K6 L& V" I3 U4 d; g& W* l+ q
;;
与当前turtle的交易总次数# x# R+ N' I& p/ D; y9 T9 {# F0 h1 t
trade-money-total3 B3 c9 x2 O- d+ p
;;
与当前turtle的交易总金额1 t; t! H2 X4 s- e: b" H  E! v6 m+ v# K9 ~
local-reputation
! w! ]/ q3 Z" Q# X' B4 s; X: Z1 ~global-reputation7 B9 d$ Q. B+ `& g) c
credibility
' u; L  S$ u6 L" L;;
评价可信度,每次交易后都需要更新+ x& l: I4 b2 Q$ R0 K
credibility-all( f' x4 g* ~2 v8 {: N
;;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
5 K8 y! Q0 c0 P: p9 H# M" O2 B; r3 ~  R" Z
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
9 }/ {4 D4 i* e8 h0 Zcredibility-one
/ e5 r9 P3 |( I, N- r% 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
% }/ d4 o$ M+ D  {2 z& _global-proportion* e$ X9 t+ r7 X- l
customer9 U3 X6 S( H6 s/ a  r4 L7 J. o
customer-no
5 l* D8 {& p! Ctrust-ok7 r7 g7 P  X2 j- L+ c
trade-record-one-len;;trade-record-one的长度
% J. V& A6 E4 H9 n% |1 E  ^]
$ L. E4 A0 ?) c: j5 j: \1 I1 K  c# u1 ]
;;setup procedure0 ^' }0 ~% L. I7 A  {
6 H3 F3 T; a0 O
to setup
. }- k% O/ B5 _5 U- U- }* V& v0 V! G. o# `
ca

) {1 e5 v  \: ]& t7 n/ T4 z* i/ |1 y
initialize-settings
+ ]* s/ {5 r: c+ N. K8 n, ?! R
* `4 [4 P& v9 g; F  O% D
crt people [setup-turtles]

- s* t$ y4 M3 e$ f6 \5 ]) F+ P( d1 E! X; O3 B: G
reset-timer
. f% G1 f) k: g! p- m( e# X, k
) x9 \! n9 D% i
poll-class

# p; m& ~- K: I/ p
# `& b' o) a- T. G0 Vsetup-plots
+ b2 q' l- p& _4 w* u7 B
1 y5 k, |2 v9 H) F, }
do-plots

( e( ~: G/ }$ M. n6 y- m# X+ \$ Iend2 i# r1 A+ C0 m9 p4 g+ z$ z
' q. u/ ?+ j' ]* z
to initialize-settings) Q! }/ W5 _5 i( y4 s9 n" h- A, B
* b2 V, M9 V1 C- e
set global-reputation-list []

) A; f" d& D2 I0 J# k, n- E# `' @; ]7 q% a8 q  u; a. o
set credibility-list n-values people [0.5]
3 e: [1 e0 z3 J2 R( [
8 C( [" I' Z1 J0 C& ^" k: E
set honest-service 0

3 W8 Y5 Z" w- g3 [6 W$ k
" Z, E2 t" v. Tset unhonest-service 0
6 `$ a4 k- Y! k, x- p# k* O& M
8 p  a( Z" c$ {( b- S
set oscillation 0

& D) I2 V' G. F
, o! H% M8 J) S( s9 g- U  iset rand-dynamic 0
& A6 a2 }5 Z, N* z1 L
end% x+ H3 Q  R% r
& U  G: F& x1 b# _8 M$ s$ B
to setup-turtles
+ q+ Y( U) x3 w6 v1 H6 Oset shape "person"
/ f" i0 f( Y$ O5 m' Psetxy random-xcor random-ycor
: B9 R% Y, Y* E' w3 f+ \+ s& Nset trade-record-one []) Z! o, @0 R* U- p

4 j5 @% [# w' T1 B+ r+ p$ Yset trade-record-all n-values people [(list (? + 1) 0 0)] 8 T8 K( V; V# B
9 G8 v* A8 s; A- C/ Z9 V8 j% Y
set trade-record-current []/ d" V: x, ~7 J+ T: f" ^
set credibility-receive []
* Y2 F+ n: F3 m2 j/ _5 N  Vset local-reputation 0.51 P* a9 [" _, ]& N. @, t  W
set neighbor-total 0. p- g8 [) g' S! P
set trade-times-total 01 {  J9 ^& _7 s$ u
set trade-money-total 0
  E% _& ~2 b2 J1 Z. L3 A5 iset customer nobody
6 {# Q& z2 r. p5 k# J+ Y3 Y+ Hset credibility-all n-values people [creat-credibility]1 q9 S* X7 S9 S2 R
set credibility n-values people [-1]. [; ?/ R% d! ?) S+ R
get-color
. o* C+ {% i$ Z. B; u6 M8 K
7 I% t7 i+ n4 \- T+ B' {/ @
end% g$ Y9 ?$ @0 j; T% u
) W* l0 R3 e- g  f
to-report creat-credibility, \  }) v1 _4 t) E5 P6 o0 Y# w
report n-values people [0.5]
" W  E, v" m3 Eend
( o6 }, ^  Z/ s3 y& C6 o% K- f7 m7 _' |# V
to setup-plots
8 G, D( h5 M+ }5 S5 [- N; ]  o9 V8 ^4 ?, {7 L1 _) O
set xmax 30
+ W8 X1 _6 K3 x" F) r

7 ]4 U7 c5 O4 |6 k; [9 ?1 ?set ymax 1.0

& n) p* [  H, ]9 G6 h* Y# {, N
1 d3 e& g8 r- w" ^& r) mclear-all-plots

6 H! g$ l# y  D( y: m: @( R! [- \& ?% H5 I' J7 D
setup-plot1
  W5 h. P" x! R: d6 ]# y0 |5 u  G
- ^1 g/ z6 a) ~  }, C$ h$ y- o
setup-plot2
  L# J; N8 G* A  m
( M+ f6 z2 p) o7 W! w- h4 y7 s
setup-plot3
/ w" [1 E. c5 v. f
end
2 A- _/ v9 }  H5 b" d7 }' k% Z4 l( i) L2 R' n. L
;;run time procedures
4 Y. G3 r9 A( G+ b3 B0 f
' g: U0 h! |6 o1 B0 x6 xto go) p9 h. r3 o3 L7 P

& R! E# v! V; c  I0 [4 aask turtles [do-business]

8 U+ ^% _% F6 \( @( qend
, y* ^8 C0 ^1 R: i* Q! w# }  }- z! i! A: k& y5 f! B/ i
to do-business # ~; a% c0 O0 t

, ]8 @9 P& N9 Z
) P: q/ C& v3 r7 s) ort random 360

" s) _3 R2 O' w$ w, T5 }) H& U5 w+ t
fd 1
5 `1 l4 ~6 t; ]$ V/ I

( |# o. o/ G$ w4 Z3 Iifelse(other turtles-here != nobody)[
* w. y$ o3 _" a1 Q
0 ~' \+ S- q: d: w  d" r
set customer one-of other turtles-here

+ ^: I$ c8 K6 i! Q2 v8 P+ l! @
;; set [customer] of customer myself

) ~2 x, P% X( F0 ~; z/ B/ a
( j# k# L9 x) h  t! |, L9 p6 l# Pset [trade-record-one] of self item (([who] of customer) - 1)6 N( i% y" X* Q# w3 G! d7 h* `
[trade-record-all]of self4 n, U/ O4 L; Y0 e, \/ z
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

8 [9 r& f: ~% R1 @# V6 V
& L$ h5 ]+ k/ B" n- D& Z! ~set [trade-record-one] of customer item (([who] of self) - 1)1 w5 w! C) F3 k
[trade-record-all]of customer

, h; R* {& \" J" X
8 E+ ~" H+ V1 X; ~7 j0 t/ ~& L$ a) i$ `set [trade-record-one-len] of self length [trade-record-one] of self
: |1 [, l. n9 }' L& B

. v5 s0 O& w# u5 s1 M, z7 Jset trade-record-current( list (timer) (random money-upper-limit))

# A: z2 s# Q2 q9 E/ X$ a' H1 T0 {
1 W0 P4 x! w2 n7 ~ask self [do-trust]/ ?3 p( {2 i6 _/ K1 N
;;
先求ij的信任度
& Q5 ^0 w$ Q* `2 _
! d, C9 Z6 y# `if ([trust-ok] of self)
& a' u' L% a4 I2 ^/ b;;
根据ij的信任度来决定是否与j进行交易[3 B/ y) x. K/ L, H. i
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself# W# i" z! F( y. R
/ g% ^3 S$ D' K
[
- W3 [; g1 k/ u' I1 q5 t

2 Z( Q* T4 s' N. gdo-trade

* p6 x5 s0 `9 b, F9 K0 s2 l: U
/ W0 g0 y+ [: p# I: E) l$ o  vupdate-credibility-ijl
# a& `* ^9 S% a5 \" Z

$ Y$ G2 a' G; @update-credibility-list
4 Z+ q9 V% s: Z- [

! ?7 a: G$ c8 v  L9 [
& J5 c  j. X# W8 r7 L; }update-global-reputation-list

8 e' U$ p% b3 T: G5 J2 l- B5 E/ Q1 Z! V/ R
poll-class
1 X- e  M' k4 z& H4 j. q9 t% @: k

  E5 L2 Y2 T' k* P- G: R! Q8 fget-color
2 @  m: O, N0 N" x3 B7 Q: {& h
. y' C' J$ N" ]4 P. C
]]
5 I0 ?4 e" U$ j2 u/ O1 `3 E8 @
;;
如果所得的信任度满足条件,则进行交易; e3 Q; }+ m! a) C, h
9 ]. V+ w/ Y- }8 S7 K& V8 n
[
2 d/ @+ s: V) S9 T0 k" |  {
6 ]2 Z! M7 _$ q, [2 n
rt random 360

' {) q) l) G0 b( w3 l) s+ o: e2 r$ [
fd 1

" a: v* n  f+ E: z, x' f9 \
+ H2 q8 s. i' T' ]( m9 []

" p2 S: H: b2 w$ F- n! e6 w+ k6 G* o) e( k- F  j$ q, Y( r
end
& [# C7 D4 p% @( f. g0 f6 Q  r

0 P" I1 i1 s2 M' B- m% G4 Gto do-trust
9 n' }, |) g7 vset trust-ok False
1 z! J, C5 U0 J1 {( G  Z, H, s' O) M7 ]8 u
' V9 b; m. _, D; y+ S- z/ y
let max-trade-times 0
6 k; r6 N9 _; Jforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]7 w$ K3 a6 B2 j1 g4 u
let max-trade-money 0
: L& S. x, d5 d: g( e0 ?( ]6 W# zforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
+ ?+ z( _+ _, k0 g( @" Rlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
+ b. R' Y1 w4 }! j5 p
. ^. [2 L; \' o; Q) b

7 o, z. H1 a0 D5 @: ]get-global-proportion
. [1 Z8 f8 u0 o' T  P) L! Vlet trust-value1 j* ^( l  B1 f
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
5 l) p& a7 ~7 ^* p: ]# }8 P8 H1 w
if(trust-value > trade-trust-value)
$ R1 g1 V9 ]& O- T! \: L6 n[set trust-ok true]; x, N2 X2 c' b, o9 p
end
1 L4 c* u3 N: e7 P& N' W( l, b( h* q# Z6 Z
to get-global-proportion
+ q' z- C( G5 r; u3 ?) E- v' Pifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)2 Y. ^2 [& h0 {% f( l
[set global-proportion 0]
. f1 t0 I" Z# x  R[let i 0
5 m+ Z4 w  {; Z3 Slet sum-money 0
: x. q* n  X- {3 o( wwhile[ i < people]
1 W$ W1 Y! [3 X[
5 U. b4 ^6 p, o: Mif( length (item i: Q' N% X, T' \% ?( F& }
[trade-record-all] of customer) > 3 )

1 |# T; ?& j$ D* Q[; U9 L! i5 ?: u" n  k( s
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
; W5 A4 W1 F0 @: b6 ^]( E6 R! p; k- W0 K9 z2 j
]$ }2 ?7 C; d* G9 ]' v5 [5 w
let j 0, f6 y0 g, q3 B
let note 07 b! n1 U" ?1 D: h; {2 J& @4 o: k
while[ j < people]
, e# _- C1 @3 N; j2 q5 C[& q  R1 ?% u; R: h8 A
if( length (item i
9 {5 s- s  C) C5 F! W! K[trade-record-all] of customer) > 3 )
, ^+ e2 M. ~, g
[' a( l* r$ R0 x5 B6 U3 y5 {
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
; m, q* e, n4 e[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
  B4 H! z) @8 Z/ C: j: N[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ [* i5 F5 `' V' F) e]
3 p) o2 D- x) G, T- z]
9 a  H8 U+ I5 N( tset global-proportion note
5 I0 W9 {( f8 p]: W1 {3 @7 x; F$ X( E/ r
end
4 i8 [4 k: [  I+ g( L6 s" h8 f% e2 N4 R  g* I% e3 ~: d
to do-trade  U+ i5 k: R- E- }7 O
;;
这个过程实际上是给双方作出评价的过程( h7 E$ |* i$ G8 a+ j3 m4 K
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
5 w2 m6 v& V) w0 I8 P8 \set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
* N% n. q8 x* Mset trade-record-current lput(timer) trade-record-current
3 L" z- V8 p6 q# k  [;;
评价时间8 I: G" x+ ]" w4 A6 R! z9 E! Y
ask myself [
+ C) B; G& _& l" Z. t7 Jupdate-local-reputation' ]% D# @: J, _3 Y! A1 m- X* E
set trade-record-current lput([local-reputation] of myself) trade-record-current
, d! Q) c0 R) l* V: C8 r4 V. P4 g]
- ^/ ?' K& W6 w9 Wset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself5 @' R, T6 Y$ o3 f4 I9 P
;;
将此次交易的记录加入到trade-record-one
* A7 H* v! j- \8 z3 ~! c+ Bset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
( A. d3 [2 V! l1 Z2 k9 K7 Klet note (item 2 trade-record-current )! H  s7 o& V7 q, K8 o
set trade-record-current. x% H9 P: r3 _: s# {- i
(replace-item 2 trade-record-current (item 3 trade-record-current))
* c$ B( ?1 g7 g$ J* S5 g
set trade-record-current1 Q4 z2 \8 [, l3 ~
(replace-item 3 trade-record-current note)0 G2 b8 P1 K  w$ s' z( f3 O8 C6 l

8 m( S- o: |8 c7 {, U+ a

  s/ G3 s5 m1 O5 L2 Y) f* Sask customer [1 A/ z( z$ p; K3 A: b
update-local-reputation" B9 u  r5 x: @) ?# u
set trade-record-current. j7 I2 j% C" a: j
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

( w7 P% `  s  @; n]
, P; Y2 X' R, [* V8 w) t1 r( n; m; V7 ?% L4 c

$ N" o2 }& e, [/ ?set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
( p6 b! ]$ P1 e# L. c
: m( m+ d& e& v
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))) p0 t- h% _4 ?1 I. ^2 F% L
;;
将此次交易的记录加入到customertrade-record-all
9 Y3 E8 ?, ?/ }$ gend
7 `9 K, {4 K+ N; I# C( O9 A8 u8 p$ G' H( r! u7 V. u& P$ F) A* F
to update-local-reputation
4 H3 G3 A, r4 @& [set [trade-record-one-len] of myself length [trade-record-one] of myself7 Y) E: ~0 O& }: f* p/ i( k' }

' l: \6 L4 X- O
4 m) D- {. u& V+ y$ r6 d, J;;if [trade-record-one-len] of myself > 3
& ]9 e  C6 V% j; I' F2 i. z
update-neighbor-total
3 d8 [  C& `' p0 N* X;;
更新邻居节点的数目,在此进行/ I" g( |/ J, N; A2 `% I- l( M0 r5 L
let i 3
, U: ~+ `6 K: {7 e6 v: ]" ?/ C3 Zlet sum-time 0
# Z0 C* Q+ Q- B& n- nwhile[i < [trade-record-one-len] of myself]/ u! ~0 k! ^+ D# ^  s
[
3 |+ N; R3 u6 P2 R  Aset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ); E2 W, `9 u' C& U: W
set i4 R% [0 C4 H* Q  r. h# p5 t
( i + 1)

, e% X/ e6 Y- C- s5 |, d]
: @" x- y+ }1 {% r/ G, Ylet j 3
2 H- G, I" f* o+ I: I4 plet sum-money 0( a) T$ m9 h5 V, I7 B! Y6 \
while[j < [trade-record-one-len] of myself]: x5 A( H7 u/ \1 N) Z% ?9 e+ U
[
/ R% H  d3 G( r9 eset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
8 ?+ h/ B: ^: s# Cset j
' I  e$ e- X9 q0 I( j + 1)

4 H. R9 u: P: Z8 V; v4 I, `]6 c- |; y& N. L9 D
let k 3% K. {( N/ Z4 @+ s) F
let power 0
2 z4 ?* e  v, J4 ]5 ^let local 0
1 \( S1 X. C) i- F# o4 cwhile [k <[trade-record-one-len] of myself]
* `: D8 ~! Q' R[
+ O: z) ?4 L# e3 Q7 nset 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)
( d3 \0 i) f: C, Q  f) \* Kset k (k + 1)
3 t! F. X, w( V. L, K]
( z8 a& V' K/ O+ @! bset [local-reputation] of myself (local)6 C" {( T' C7 v
end
$ q# i7 {* H% g
3 X% v% a# u  x6 Mto update-neighbor-total8 v0 g* c! X- ]6 s4 F) j0 U  K. b

% W  R$ D' g* C; Yif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]' r7 Y1 s! R! z( b$ @- v) S5 E
. r+ |& g# |, A5 S% ]

3 S" }3 |* R6 S0 n! |# t& Q3 X" K  tend
6 O3 W' Z; H# N" q; B8 Z+ q- q' x: i- N: Z+ M7 h% I) ?) P6 W
to update-credibility-ijl
- K. N8 a, l/ S) S# `, L" W
8 N$ N+ B% }' C;;
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。
+ y# l2 x1 u: ulet l 0
( ]( ^) j! I% p% A0 Ewhile[ l < people ]) u& o  ~8 F4 w  T! M! p3 V
;;
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
4 m8 z, }8 p! b: f# U) V  c- X[$ W1 m7 P1 V7 z/ T
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
& q! \; t7 `# J7 x0 n5 b+ ?. uif (trade-record-one-j-l-len > 3)9 K. r! E% G1 c" ?; c+ C- C5 ?
[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-one6 o$ f/ ^3 w" |7 N4 k5 m4 Q
let i 3. w$ o+ L# \" }2 O+ [* }
let sum-time 0
5 Y3 i& u# ^9 B& L) K: Twhile[i < trade-record-one-len]
* l4 M/ L0 |( w1 e5 L6 V[
5 L: r3 n5 l& b2 M$ `6 }8 Bset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
7 C( j1 z8 ~# D8 F& L' N. uset i
, z# c- Y2 P. d3 b5 S, o3 {! b( i + 1)
0 h! w. @2 P7 y$ F$ N* N
]
- E2 @1 H( X# D5 C5 Nlet credibility-i-j-l 07 V; P/ W6 g- `& ]) T, r8 w
;;i
评价(jjl的评价)3 V" t9 N- K! y  M0 z2 f
let j 3
, Q1 [9 {2 d0 c# `. Q+ M8 blet k 4+ G/ I0 X1 P* f/ D: y7 N2 V/ N3 |
while[j < trade-record-one-len]
6 {" j" b- [) C$ h[
3 T2 @# @; [8 m- Q6 ], Fwhile [((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
3 d- m  [1 R& R; s: [+ Qset 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)
" W" U4 ^& k& `. k5 E( s' I0 Y( Qset j
; r% q8 W! E+ ]% |  \  S; y, `( j + 1)

* y0 d' O$ o# `% f8 B$ q]! V( n9 |/ D  s! S) V) g2 {/ ^
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 ))
7 \7 Q2 C/ V: e( S  B. O* Q! F8 R, S. X1 ^
  x/ h8 I6 v  R1 F, a, ]
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))8 M* N3 J  G; \- B2 d7 r
;;
及时更新il的评价质量的评价% }; E  y, D+ [4 j$ L
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
0 |6 Q, h: g% U% {; B* y8 Eset l (l + 1)1 g7 \2 f. p( X, a" y
]
* M: \( Q0 F* x+ c+ Vend9 a3 _0 n/ E6 @5 G  I$ J7 p  M
8 L, j' H9 {) P+ i! M0 T% l
to update-credibility-list5 ~3 i" ?8 z5 v/ K' O
let i 07 V$ [1 R3 l% U9 n- u% G: A
while[i < people]
: }  F) O. b7 Z7 F9 U[  X$ [/ D" Y0 @4 O1 `2 f% s9 B* e; x
let j 0
% p2 _. k4 G, J0 c1 l. a$ v' C. e6 |let note 0
! D) w9 J/ \2 d4 l$ qlet k 0
. ?/ L$ o. A  ];;
计作出过评价的邻居节点的数目
2 i! O9 Z4 h1 a8 {+ ^$ Ywhile[j < people]
3 M% p* y! E. M7 x& f6 r4 ?[
/ U6 ]3 N1 P- c  d$ gif (item j( [credibility] of turtle (i + 1)) != -1)
3 |3 ]3 A! k* }6 |. n1 V;;
判断是否给本turtle的评价质量做出过评价的节点
: H- x2 z5 u( O" u2 B[set note (note + item j ([credibility]of turtle (i + 1)))2 l. _' W0 p3 b
;;*(exp (-(people - 2)))/(people - 2))]
! M+ H# W5 K& D( {
set k (k + 1)4 M& ]0 Y( ^/ H2 i3 p
]
# u. F* y( R8 F& s" ^1 s3 ~" w: S% vset j (j + 1)& v/ a. D# o$ c- s9 s8 S9 R1 v
]: o( @& k/ Q: n* @- R7 q4 f8 @
set note (note *(exp (- (1 / k)))/ k)$ e( l, l- t. a4 b3 U, F
set credibility-list (replace-item i credibility-list note)$ Z9 ^. P7 G$ p- \! i# C' U
set i (i + 1)) }' V) n' Q; _0 i2 m
]6 T# g. _# u. P  L5 \
end) X  w9 u4 }; g: w- l) h, b- l
( }# C6 F! u5 C" a" s" T8 G
to update-global-reputation-list5 M5 ~$ G3 o+ U& i/ o
let j 0( U0 g1 L& l# a6 m4 f
while[j < people]
' x: B. H5 Y6 l' @) \( Z$ i/ u[
' o( U0 C+ w' dlet new 0- B+ d5 k. x6 B7 u, e0 G) a/ K
;;
暂存新的一个全局声誉% E, H& ?, W% x3 y
let i 07 c9 v* b5 a, w* u9 }9 e. I4 \
let sum-money 0( Y6 h, ~! D( T" d( V$ r9 x- j
let credibility-money 0- U! T5 z0 Q5 r8 w. o: ?
while [i < people]! x5 O5 Q4 d8 ]  a
[
- _" e7 @, U( [9 A$ rset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))) x: k2 \! w5 W& p2 x+ ]
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))5 N$ R  x, e: w' |7 M5 P8 P
set i (i + 1)
: J& l( K+ K' r4 K7 ~]
$ }. [3 [2 S2 |& C6 R1 J& \let k 0
# v* K+ H$ A( v" s/ ]6 W7 K0 Wlet new1 0
" e6 @  j& O, T, ywhile [k < people]
; e1 ?( q8 r) C  _[
. Z) u2 I& H" K$ ^. f4 jset 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)
6 z; P3 V: f& y& o4 iset k (k + 1): |% U. g% ]; n
]7 B+ x  \$ H. Z/ p% y# S: Z3 {
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
. h3 b! f8 S7 Yset global-reputation-list (replace-item j global-reputation-list new); u4 X  N  n) p. u) r: J$ S
set j (j + 1)
& \9 w; x5 R! Q$ ^$ v]
4 G  \% {, e" r! d! q8 uend5 M' p4 D& G$ z) H
. @" u+ p1 z; r2 ?% ^* w
. Q$ C) `+ n6 S. i( w
2 W6 s+ ]7 n4 M; t5 W! f
to get-color
) \2 J+ g4 Y0 t. h: L1 ~" P; V3 `" Y8 X! {" D
set color blue
1 X8 G5 I! c) a1 W+ O) T! L
end9 A; `3 m$ r; n! |1 S
6 q- s/ x0 b9 v: b; |& M3 M
to poll-class
0 q0 q& n9 A8 eend4 S& {5 W  x: X3 J+ T
, {* G  G0 y' P6 |6 w
to setup-plot1
5 V# {1 o, W9 W/ g
% H. o' L9 d( A0 Jset-current-plot "Trends-of-Local-reputation"

: q1 G6 ~( f' @4 y9 g
( A9 z" \/ M$ p, n8 C+ q4 m- ~set-plot-x-range 0 xmax

2 v' m9 z1 {5 ~' f
0 q5 g! w* e) S% i/ t7 Vset-plot-y-range 0.0 ymax

, F5 O8 ~1 i. L' H) G& x/ ^% x3 Nend
- \. ]; I: p0 W; ?2 T" [4 d4 p9 H* U0 a  w3 `5 ]+ G
to setup-plot2% }; c; r* i8 U) j3 f9 k

* V8 n/ H. M( g) j" F9 T/ B- U8 ^set-current-plot "Trends-of-global-reputation"
3 e" d# U. V; M3 C

- z3 U/ Y  O6 Eset-plot-x-range 0 xmax

/ S1 ]+ h* r' s) q2 h2 M7 E. n$ E8 s, Y' ?- a5 b7 v/ t7 w
set-plot-y-range 0.0 ymax
( F! z0 w. o/ T' A) i
end
; i1 z  j) `- `' n
8 r  E$ E) T6 nto setup-plot3
# ]/ E! h; y7 q% K# C% Z! n( V5 v' u2 _# Q! L
set-current-plot "Trends-of-credibility"
3 H* X8 a# _  I$ U- [* w- W

4 E! O. M  |' Dset-plot-x-range 0 xmax

- f7 R1 P& d3 c7 C$ F+ v% ~' r
  L# I3 Q) P, T& f+ O1 l2 I$ jset-plot-y-range 0.0 ymax

. c3 l- g6 G6 q' |+ R; Lend9 t% `7 l% ~# Y, _' o- S

' O2 j, W1 m* n, P3 w6 [to do-plots; @, D" _1 B, y: B, h
set-current-plot "Trends-of-Local-reputation"
: v( J4 j- U7 R1 C2 c, X  Eset-current-plot-pen "Honest service"
! F" p0 q2 x: v" Q! p/ |$ {+ uend
% x( u6 l4 o. V9 T  v2 B4 D
  l3 B, X3 ~' u1 ?. J$ }3 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.
1 }- o# M2 B8 S7 @  \
9 _  w8 q" m1 l; 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, 2026-6-3 12:59 , Processed in 0.023141 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