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: 10841|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:
- a  M3 e- L  \: S( m! u1 Yto do-business $ `% w8 U" t- T7 m' P+ A
rt random 360/ o4 R9 V1 Z; x
fd 1
7 U; X& M( G8 S. w' z  y ifelse(other turtles-here != nobody)[
. T# e* c/ t3 u& }& i- L1 I   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.
* q+ j- r  }4 L% T' `6 s2 G9 K   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
! C  v1 D6 V) m. T1 F   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer( ?$ w* d8 O! y+ [
   set [trade-record-one-len] of self length [trade-record-one] of self
! g) c, f" S: Y1 g   set trade-record-current( list (timer) (random money-upper-limit))
2 `" I+ `! d! V) [* {5 w" F; g% O* g/ L3 E4 n' S  u
问题的提示如下:" m- n5 U* g0 {" W$ K' N

8 X( d2 O( W  I- x" Qerror while turtle 50 running OF in procedure DO-BUSINESS
3 ^9 [5 |  K7 |5 i  called by procedure GO
9 J+ [$ W8 W1 l5 s  u5 EOF expected input to be a turtle agentset or turtle but got NOBODY instead.
, ~- x' o4 L9 H, G
(halted running of go)
8 G8 B- }( t0 G' S0 O6 R9 G" m7 ]& a0 U2 q7 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~~7 w& x0 @; i, Z; s) o8 S+ c% O: u1 c
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; v( k- {, x, }/ N+ B) a
globals[
6 Y! ]6 s9 S3 i+ Oxmax, s+ S2 H6 k* Y/ @6 g" e
ymax5 P* p! D3 e' z9 T' L
global-reputation-list0 S) x* l7 p8 c+ D3 c* f! U/ \, T
3 s& _  ^9 H" Y: ~7 B3 X
;;
每一个turtle的全局声誉都存在此LIST
) W" L; S' F& d; t$ Y+ z  {7 Scredibility-list
  m( ^! a8 M2 o+ U& f8 R& u( H;;
每一个turtle的评价可信度
# C- C) Q0 _  O, ahonest-service
/ o( ^/ H$ z' B: Funhonest-service
- X  Z) H" _- q5 |- d8 ^oscillation
5 r( D/ V' A+ ~! D4 q7 I0 Trand-dynamic
2 W6 u, k; L& \) @( M3 A]1 P$ S# B& q5 A

$ K! r4 S' i2 y1 iturtles-own[! \6 O9 Q# e0 h; N6 M6 J4 N
trade-record-all
  f8 w& y" j: k) p* S  A9 ]& y;;a list of lists,
trade-record-one组成- }# J% P/ G& |% x  ~1 R
trade-record-one+ i3 o! f/ k9 \! }( p
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录! \$ U$ C+ o% [! k/ l

* ?+ Z3 _  g" Z: w% B: q' P& J1 z;;[
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]]
7 e- W6 S9 Q# x! Qtrade-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]' P  X* w" y4 O! ~. v" h: w
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
+ ^1 S/ c" \5 I/ ^neighbor-total, U, F' e* O8 i
;;
记录该turtle的邻居节点的数目, h$ N$ z2 ^  A  w/ T
trade-time
; @1 n: u. s) P; l3 S/ ?6 y. x;;
当前发生交易的turtle的交易时间
6 X9 y" ]. x/ B' q9 qappraise-give
' ]% [6 n1 E: e: g" ?3 R;;
当前发生交易时给出的评价
3 H7 E6 d2 [7 D0 Eappraise-receive" Q0 G9 V, V4 Y" m/ I) Q( ]
;;
当前发生交易时收到的评价
& k0 g% C' D, i8 k" u3 R* W* qappraise-time
2 k% q6 b3 _* j+ l6 j- v8 Y7 W' D;;
当前发生交易时的评价时间
! R$ S: o7 u& W/ {* m: {local-reputation-now;;此次交易后相对于对方turtle的局部声誉, N) [5 R% |0 H! ]
trade-times-total
7 V7 t) y; Q1 Y. X' `' Q3 Z/ ^;;
与当前turtle的交易总次数" H2 _) h$ \8 i7 b
trade-money-total8 _) D  i  W# b4 L, R! q" s1 m
;;
与当前turtle的交易总金额( [7 d! c3 ~! Z# a
local-reputation) C/ N1 o: \: n0 z0 [; [
global-reputation# t, H( _8 t/ b9 X: E5 }
credibility* p- a6 v0 [  E5 K# _% [2 m- H" O
;;
评价可信度,每次交易后都需要更新
' `+ M2 v9 a* B* {credibility-all- C  M& @& M6 L: }
;;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4 X( T* v; g& D: }+ t; _, @
9 \7 @/ n  x  j9 b3 d4 V* j5 A9 J
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.55 `/ P& D  F* |* i8 y. k/ g9 Y
credibility-one8 r. i0 T9 _' m& w9 d* `, r
;;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
; D$ \% m0 ~; P) Z9 ^& }! I, P' Fglobal-proportion  u; X0 O8 b/ S' }
customer3 W- C9 `1 H6 m  e/ e  n% m5 C# _: N
customer-no
5 \' X7 d, D( i2 d6 O/ b" T& utrust-ok
. F0 k* f3 Z1 x$ l9 ptrade-record-one-len;;trade-record-one的长度* m8 `0 r1 }. n3 ^; p; R, Z, S- K4 Q' ?
]" J! A5 x) A2 c, V
2 p6 z" d! j$ L3 v8 Z. k. T
;;setup procedure2 Q4 v& P9 C- J4 N0 _5 p) U
& n7 i7 `1 z. c. ?4 t- v& U- C9 m* }
to setup
% S1 f- c" l6 x5 m9 k0 g2 C) ?
4 ~; e6 f  F( ?* ?0 tca

/ B4 K; v$ j$ |
0 W! ]1 e" E. {! x  H3 ?( vinitialize-settings

1 a4 q4 ?: l: L+ h
8 i! L- t1 y" u5 Y& {, q% j" tcrt people [setup-turtles]

+ ]  Q5 A! j8 s  Z* B) z) d, w, V9 Q; `' _' J* Q
reset-timer

, Y' u8 j4 E: X7 h$ A: z% _- ~% c. F! Y8 ?- w
poll-class
) h& s3 P7 F) P2 h
: i$ w, m' R! i3 t
setup-plots
; B8 s5 ~8 C* r! a: i2 P
. |) `+ ~. ^& x0 b5 d. \
do-plots
/ O9 m5 p# N2 Z
end
; {" A  S- |* V0 G8 v
3 y7 K8 y* N- ]) \to initialize-settings' t+ P5 ]  H5 ~4 W3 X3 P0 b, O% h
" B' e) A+ `: E. r
set global-reputation-list []

* G! F( `) c+ ~+ a2 _/ G5 J% O0 ~4 C' @  ]4 y8 z
set credibility-list n-values people [0.5]
; e! l7 W5 J. m4 k* e
0 S3 r2 I1 N$ W1 Z5 a
set honest-service 0

+ }7 X; y8 c3 v" ]: t
/ q; x- d# h3 W  V+ oset unhonest-service 0

$ \: _4 B9 O, k& A) V
9 F& v" f/ D: n6 F2 jset oscillation 0

( [+ d3 b1 {" V; j' C$ P- i6 t: Z3 k% z, H' ]7 K" H0 \
set rand-dynamic 0
0 Z3 `* _" m) q+ T& b4 P
end
# V' m1 f' [6 w9 v# Q/ o; d. g- P
) ~) N4 t* M9 n( k3 Uto setup-turtles # k* `4 s$ o  H+ `0 D1 N( `* a
set shape "person"
5 |6 l. F3 B; J% o4 K8 Z' nsetxy random-xcor random-ycor
+ B% R( y$ n1 c7 {8 N! v3 j) t! N3 kset trade-record-one []
9 m& r' ^6 ~3 B) O

: e7 A  r! J) Bset trade-record-all n-values people [(list (? + 1) 0 0)]
  O3 z+ ]; P+ v: K
6 D. r. z" I5 A) T7 W6 ~* j; F
set trade-record-current []8 \$ M2 H" c; P8 A
set credibility-receive []- ^' V4 }( A& g3 l  P9 m
set local-reputation 0.5
! m6 A. d; i/ t1 B- d( d. tset neighbor-total 0
+ f/ e' \! K, lset trade-times-total 0; o" H& y: }2 |8 j* O" l0 z! D
set trade-money-total 0
" X4 K: R4 l6 Z7 ?set customer nobody* L8 V$ l5 t+ b/ N& a. K
set credibility-all n-values people [creat-credibility]
" ]4 [! Y& ?2 g5 H9 x* `2 O/ g- Vset credibility n-values people [-1]9 O+ ]% l( Y+ K/ U
get-color
: @5 o% q/ f0 i6 |" q9 a( F
$ Z, Z/ G$ g) n& \' A
end
( U  E% ^" j9 r& ?. \! p  j
/ p5 {6 l% F5 |( l' ato-report creat-credibility9 b7 X" K9 C* x. O
report n-values people [0.5]  c( Y; C7 c) d$ ?( r9 J
end) s& J0 X9 Y8 i# F% x
) v6 y+ p5 V# C
to setup-plots3 j+ T: d) [; T4 S. Q2 v' j4 y2 k+ [$ y

8 N# x! `& ~$ bset xmax 30
7 ]. S+ ]' U1 k2 n$ _, L

& F; @: c9 b2 ?$ Yset ymax 1.0
& \' ]; E3 o% D: N: A
/ M' Z+ \; l; L: q/ r
clear-all-plots

$ e5 W( W$ K( b0 X! A7 j
( q/ s2 P8 _' c  `setup-plot1
  y- P. z9 k1 o6 i0 S+ m9 M/ c/ j
, c- `. H7 B4 R' X
setup-plot2
- Y9 u" m7 R7 P+ t& X$ M4 Y' D0 Z
3 h: P' Y9 n" f1 X6 w
setup-plot3

4 a& {5 O+ X" H2 M; A7 k5 G+ m% gend
" q0 ~0 z/ b4 C6 n" Q
* G6 P1 {$ i5 ^( L9 Q' P% n;;run time procedures
# y1 }* J+ M# R2 V( A$ N6 d, P5 b& ^- a* F- [. t  A
to go6 Z: `( Y5 J2 D/ X# U9 O) S

# ]) y- |1 }0 W; V% T; Vask turtles [do-business]

0 T6 Q( M$ o6 A% y& M4 hend
* ?; _& ]/ Q4 p
3 O# ?: K6 P& r/ c8 gto do-business 3 P# R, ]2 \6 x  c
; O" r9 a1 `- T/ n; ?- a
' f9 ?$ Q- c4 G. L" Z" `
rt random 360

5 W& ?6 N" J5 ?9 @. A, ]* s0 u
* n# Z7 ~1 S* ifd 1
% f! d% C. [9 t& H( `6 ]& u
+ m( L0 I+ @4 `' j$ {( [
ifelse(other turtles-here != nobody)[
! Z6 ?3 s* i0 C+ I
% w3 m. l$ @/ O$ m) Q6 K8 x& F4 e9 h! a
set customer one-of other turtles-here
4 W5 D7 D6 }! X% |4 R3 O& N

8 Y* h2 s# @) _4 ?) f% {3 ?;; set [customer] of customer myself

( ~  U4 y* e  u
" ]* f5 |: P4 C0 R1 Zset [trade-record-one] of self item (([who] of customer) - 1)
6 V( S; @$ |& m7 T+ y3 S3 H5 f[trade-record-all]of self; c* `% G* D5 C) J0 K& U
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

$ l. O* d$ {" ~3 g
9 o( q) Y- k- v$ i; N" G# L2 {set [trade-record-one] of customer item (([who] of self) - 1)
7 W0 p. r4 A% w# Q( m& Y$ I8 j[trade-record-all]of customer

) C/ v8 C! b. A! }1 J/ k# H
6 I# \# v* y# o  r5 E. w% Iset [trade-record-one-len] of self length [trade-record-one] of self

0 v" S2 B/ E$ Q( C! i" k1 `; m( ^, S% U1 d
set trade-record-current( list (timer) (random money-upper-limit))
9 p* ^" ^+ _: R" `: Q: x; Q, S6 ^

8 g5 q8 K& [" }$ _; N: B  M6 R  Gask self [do-trust]7 h/ _$ L/ ]1 C. q
;;
先求ij的信任度- F9 N( P+ Y2 ?" w3 c
( [' Q% \6 u* g4 g0 }) |
if ([trust-ok] of self), o# a# v* _+ M8 s
;;
根据ij的信任度来决定是否与j进行交易[6 h. }- j0 b1 d) g
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself( v* x* h4 e! L6 Q- w  S

$ a2 ]3 y/ O. x, N[

* i+ b# W& J  r7 I/ ~
8 n# {" V5 m9 ~/ L1 C7 d% D" edo-trade
* I& K  o- E  r2 H

9 b  o* O& M  Y# Nupdate-credibility-ijl
+ N! w0 k% O: u1 U% f% @
2 H/ H' _+ |! ?  i! ]% u3 b- c* d$ a3 @
update-credibility-list7 p5 F. c: ]  e9 `3 Q* b

. R+ b% \) s2 l# v
# L; T; A" I  Jupdate-global-reputation-list
( M% b9 S# ?# |! h& P9 i( r

/ P' [, N" H# y/ I% Tpoll-class
' T4 S# r8 \, [- s. S
0 i. u' A# o, C6 p( {/ w/ x& Q+ v
get-color

% A0 \5 Q' i: ?4 o
" S% l3 q, i6 O3 d1 l& @]]% _  k5 S* `9 ^! b

; r7 `" m! b! ~, U/ |  @! x;;
如果所得的信任度满足条件,则进行交易# R3 x2 X7 `/ l! Y& |
1 u# T/ m7 ~6 _  t' a4 Z
[

, S( i$ F2 J3 `/ z: V! H3 `* g* ^- O1 d
rt random 360

: X4 g! @6 T) E, ^! U. R8 O, w( z. \# L: N9 i! s) a% ^$ z
fd 1
' l* z' j5 S, F2 e

. L' _6 v$ w4 D" R/ V" t, o$ X  J]
% Z; \2 N/ c$ T. x6 S1 d" `  Q* V

" {* g  C" ]8 ?+ r+ r0 x# x9 Lend

. m7 r; D, f. o' W. J) d1 P, B, h6 R0 V6 q
to do-trust
/ |3 |! b: Q4 h+ W/ r, G( ]set trust-ok False
% A$ e0 r! Q3 e/ m1 ]. b  e9 Q- S$ D# W) h* k; L0 t

6 C7 @' `) c& C$ \' j  i  f! olet max-trade-times 01 I. Z" J& j4 ~" [6 v
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
) o' S0 w: S; c) D8 e( g" hlet max-trade-money 0
) h7 C$ |2 }, v' B+ W7 ]- kforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
; }. g* A7 l2 {let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))& e! J/ j& ^0 x  B3 A$ B- K
# B4 g) P% c/ V

. f9 x' F  \# mget-global-proportion
0 r7 n# n* P  Blet trust-value, l: j* A/ [/ w( I* t, b
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)

! r% i8 S: M; D8 q/ l; Oif(trust-value > trade-trust-value)
3 R2 p6 i% _, G0 j* G' [- A[set trust-ok true]  o3 f) _; M6 T. {
end0 Q, [. H3 f  H5 b; W
( Q1 b- z7 O$ Q6 m2 O4 @4 N
to get-global-proportion7 z7 {" V% }4 X, q* n' T$ o
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
$ a4 E- i) G1 I4 |% I* C  |3 Q; t$ y9 d[set global-proportion 0]
4 q- Z2 T: j( J* k, \" t! Y, o[let i 0
% A  c- h( `" |/ h- O* ilet sum-money 08 A0 @& Q0 u6 y9 b3 o
while[ i < people]. |& ~% u: a1 _3 h9 @7 }8 D+ L
[
4 q& v' I/ Q' K7 d" y# Jif( length (item i  w, Z# t% |  U5 k7 i
[trade-record-all] of customer) > 3 )
" k8 ^) X% w. H) J* v1 _
[
7 R' j3 \/ {8 B1 n, a2 Lset sum-money (sum-money + item 2(item i [trade-record-all] of myself))) a8 W; q- Z6 u
]
, b* j7 z" G4 l+ _  F]7 H, k) q7 ]" E. \
let j 0, S; c$ @- G: Z# D- b" D
let note 00 K# B, A% J+ R# j: W. B
while[ j < people]' I1 K' y- U* \/ F8 E2 ?
[) Y- D6 p+ V. A1 u9 D
if( length (item i1 o, L0 t# r; H. L% t
[trade-record-all] of customer) > 3 )

8 c4 P# `  V6 _) ]3 D[
- W0 F1 P4 U3 y2 I  }3 d3 ]ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)/ H6 I% Q9 y  v8 H# Y" j. B8 v5 @
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]( p% n1 x% T# T. C) f5 n# ]
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
0 Z! P- }6 c' P/ @5 b4 H1 Q]8 i. f$ d& [4 ^2 s7 V* G' r
], d. s3 B; a4 S+ H" p, T7 f
set global-proportion note* q" f* f$ J! a+ V& T: {' R& z
]& ]& U% W* M6 {/ P" }7 E( ~
end
! V" j5 X. x. n# C% k
) _% @$ h$ `/ X% Dto do-trade
! w( U5 R. b5 A# W8 P;;
这个过程实际上是给双方作出评价的过程+ u; U" i( `$ J1 [5 k
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价/ N" T1 V& c9 O2 c- ?# f7 G: n
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
# v1 `- D9 l* h  a/ y9 E% i0 Aset trade-record-current lput(timer) trade-record-current
) ]* K+ T0 Z# v3 B4 d;;
评价时间
+ |5 s- G( w- V+ i! C' y: nask myself [" ^9 W8 n. ~2 |: }+ k& e# F
update-local-reputation
  d. x6 c" e  jset trade-record-current lput([local-reputation] of myself) trade-record-current
$ ]! w1 F( ~( t% a]) @8 G' t# u. \
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
; J0 [- d$ Z' Q5 u& M6 w) l$ k. C;;
将此次交易的记录加入到trade-record-one
# ?7 ]. H9 e+ e$ T0 Dset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)7 t% g& {0 M! k3 d, J: H
let note (item 2 trade-record-current )* G. k6 e6 r. Q/ N$ S
set trade-record-current, v; u' c' a. q2 P
(replace-item 2 trade-record-current (item 3 trade-record-current))

# Q9 d1 k6 d; J6 D- a9 N$ @. k* {set trade-record-current3 r1 C3 C; K8 |$ Y0 |
(replace-item 3 trade-record-current note)4 C( n4 F9 H0 `! q1 O/ N) k

+ G( I& M# Q  e/ C, Y

# s4 `+ n" p& u% @3 Wask customer [
0 W0 {8 M2 F; m4 i% s: @" ]7 iupdate-local-reputation
' T1 W1 _8 e. a* E' qset trade-record-current
1 z' D3 }2 n" a8 H7 a# Z# p(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
+ R7 t. m& y7 W6 I8 Q0 w; D
]! P* m6 q# V/ ^) Q  ?' M2 A6 V+ d
3 s: x, n# I# x$ G+ M

% f* u! f2 l* ^6 eset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
7 i5 i0 t" h  D* G" ?0 |  j
3 k) {+ W( Y0 b' p  \( Q" v. [
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
! |5 B$ E" J2 S, h! h9 ?2 A6 H;;
将此次交易的记录加入到customertrade-record-all
. ~8 X3 L3 f+ M( k1 F9 t  C: R7 A4 Fend
7 x+ N1 W) M% i  K7 i
1 f, N0 E4 s" W) X) Mto update-local-reputation5 ]' I. Z( }* L7 H$ k
set [trade-record-one-len] of myself length [trade-record-one] of myself) G- C: a2 l1 E- x" v9 Q$ x

; s! `' z+ I, q; X, X2 X& E8 |; g, G' Z4 r, D, o3 A8 ]
;;if [trade-record-one-len] of myself > 3
# O1 O" R' U( N9 P* l" i& p
update-neighbor-total/ [& n/ O/ X6 i/ H* P& V- e$ p
;;
更新邻居节点的数目,在此进行
0 w, l' M+ n: a( {1 |+ Blet i 3! `0 M: T; K" e) o
let sum-time 0* X$ [4 F! y; S/ s$ F2 p" M1 y% \
while[i < [trade-record-one-len] of myself]" \( W9 z6 i' Y& M
[
: V$ S' Z- w1 [+ \5 o; u, m) M# R9 eset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )8 {5 T7 b, j1 m) ?" v
set i
8 V, f7 [+ [* Q- Q2 p( i + 1)
- n; b$ h& o9 N1 N6 d  j" s
]3 [" v7 A" b8 B" ^
let j 3
2 w% L4 W4 v7 k, t8 Q. I/ q, B+ }let sum-money 09 s8 @& P$ c+ F
while[j < [trade-record-one-len] of myself]
9 I& j8 h8 I  `% d9 a# I* Q0 M* K[
; q4 \. @: L0 {% m9 ?* Oset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
" v8 `+ G. z* I" ~4 ]6 ?set j- a2 N$ h* N# c& V
( j + 1)

  s& J( F7 ?6 B+ c2 G( V) Q/ s. \]
5 r% j% W5 R9 H: P- Z% clet k 3
* o4 i. _8 x0 {5 c0 F, Dlet power 07 f/ y  D2 i7 f# s" s! ^2 y
let local 0: j: R2 O; @$ y# e! l: Q; {
while [k <[trade-record-one-len] of myself], [, i0 e6 O) e6 H' L- o  B6 o
[
7 I2 a/ V( n6 Mset 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) 1 F, p/ \6 H5 e7 ?! l
set k (k + 1)9 v0 `/ w) I5 s6 ?2 J  Q0 v/ h) x
]; x. |: I- u  `4 x
set [local-reputation] of myself (local); D# @. |# ^+ c9 R6 P4 @" W, K
end
/ R8 G/ ^  O5 E" S8 }$ ]  Z2 ]4 Y, Q3 T7 C7 |
to update-neighbor-total' c$ j0 V! K; X- W" t

' t; q9 A, M3 @3 f3 g2 _- nif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]3 K  r# m( s( x

1 V6 H" o" |1 W
  l3 k3 N0 p- p
end
0 |  x6 A  B# x  F  O% U7 R: f2 M3 P
5 r% w8 ^3 i- d! }4 _$ L. pto update-credibility-ijl
5 S  M  @) Z/ v' d. @* [  g. L6 R/ M$ f) M, E# E# 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。
9 f: E: k1 u0 l9 G# H7 X3 D- Hlet l 0! o- b8 d  ^3 n2 ~
while[ l < people ]! O, d* ]. p# L+ w3 \4 D# 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0 B: K; J6 T/ s2 f9 j7 F: r
[
# z+ i$ u% n7 _4 p1 Mlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
' Y, \! O0 j9 h& m1 U4 ?- Wif (trade-record-one-j-l-len > 3)
' O/ k5 S" n2 b# ?[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, x. |# N/ [/ [! J$ ?3 A; [
let i 3
& d7 `( m% `" i0 u2 mlet sum-time 0
+ t* k3 l, h) I' o- @' fwhile[i < trade-record-one-len]
9 w/ d: ]" t7 W  D9 ^/ @[) J9 E" J) I9 H0 T6 Z
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
% R4 S) E& N9 c( _# k" `3 Gset i6 b- u* K$ k; H4 p
( i + 1)

" d) o5 @/ ^  ~& V" Z9 Q% H+ D]1 h) E4 v) X" F3 @
let credibility-i-j-l 0
% B- g# z2 V) @. |. h$ n  f0 d;;i
评价(jjl的评价)# U+ B4 L/ ?/ W+ c( d
let j 3
! w/ ^. h" H' D% l& Q1 Jlet k 4
1 c2 w* |' s, ~9 uwhile[j < trade-record-one-len]/ [( R* o( G" Y) W6 Q
[
. l5 M4 s6 d/ vwhile [((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' A4 i  G1 A) I+ k: c- x6 k& U
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). D. d6 V; A, Q; @0 N2 V
set j6 j) [+ q- b& ?7 v3 v+ F
( j + 1)
' E/ P$ A+ @: _. s# j
]  R4 s& a" w" |
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 ))  d0 d$ S( A3 f( Q4 \, m
& |+ S, g5 {8 i2 v8 @- c
( ?' v+ Q, `- D+ o; L+ F) A
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
! h3 |% j  m, J+ U;;
及时更新il的评价质量的评价0 k& j$ [2 N2 {, y! G- ?
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]" B7 j. m, q9 i2 `& p- O+ }0 i: L7 N
set l (l + 1), @6 j( y1 S9 v' n/ J
]! l# ]- Y( J' p6 s( u2 t9 N# i8 J5 @
end
' n, V% u4 X$ J2 S$ c/ m8 _( I! b5 n- J
to update-credibility-list
) c' r- e  u5 u( ^9 G& P& ]" \0 Clet i 0
& S1 b1 t% X/ S( m7 s& ^while[i < people]% w  h" {! Z9 Z  {: y7 M: c, \
[4 S# u9 ^; m+ N( c
let j 0
9 Z) ]* e7 x& \1 m) ~let note 0
; V8 D( b' u. f, I+ h: O6 v/ t' Jlet k 0
6 B5 E, {3 H) G9 J;;
计作出过评价的邻居节点的数目1 |' ?2 a4 Z1 ^( d
while[j < people]
) E/ h- X" M1 ^2 T! D% l3 p[
3 T2 L, |! A$ C+ k+ D' sif (item j( [credibility] of turtle (i + 1)) != -1)  N, t# ~! r1 C3 q3 N, o2 r
;;
判断是否给本turtle的评价质量做出过评价的节点
$ h1 _  B- ?/ g, s) C6 Q+ `& q, H[set note (note + item j ([credibility]of turtle (i + 1)))
- a! W6 }& I/ d3 }& D;;*(exp (-(people - 2)))/(people - 2))]

5 [1 E- w- z/ B5 \$ h$ Fset k (k + 1)! `# h+ B. D# R3 K1 L) e+ i9 s+ r
]
& y/ f9 W; T$ o" m% x2 O. L% hset j (j + 1)0 c, `& Y8 T/ l8 }$ N
]% c" ?) G1 n" H. ]& h9 X3 G, f) O
set note (note *(exp (- (1 / k)))/ k)2 I6 g# X/ Y" ^
set credibility-list (replace-item i credibility-list note)5 h7 b# c# w3 g6 H# |& k$ H/ H. H
set i (i + 1)
" w) N+ W" B* y5 S/ ]]
0 Z% O. o, K1 l9 ~end
1 l2 l. ~% X9 `4 \# B  n/ [6 B4 p% T
to update-global-reputation-list" u) s! {( @7 h- d
let j 0. Z% e. v/ v- k7 t# F6 `& I" V
while[j < people]0 u% ^5 _0 N: K" x
[5 h2 F, t4 E, X) w
let new 0# Z$ R  F2 g" L' |
;;
暂存新的一个全局声誉
; h# W& E7 ?' S+ ]- P5 o* G+ T. n& Vlet i 02 q; r1 E1 _. {% q, s7 L
let sum-money 0
8 b. Y' Q$ r1 Z* T, ulet credibility-money 03 ?/ R0 K8 y# \, l' o
while [i < people]
7 P5 }: n) w$ j5 g4 E0 Z& _[$ X) T, @/ `% g5 q) Z  C
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))( P  D) Y; Y1 S4 o$ Z9 {) @
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
" H1 W2 p2 r( ]set i (i + 1), R4 i" L/ z9 E! x* u+ V
]
; _6 H: l, _8 a7 W/ m6 ?! @% klet k 0
! ?/ A& T- s# a1 V% N& Olet new1 0- N7 y, l* w7 z* K* x% z- {* p% ^
while [k < people]0 ?. ?& B! F( `2 D0 J+ w
[
$ \. X3 U! I* ?1 [3 U1 ~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 U2 \! W9 N- B, Z! K
set k (k + 1)
+ k8 E7 }- r* ~: [' u2 D6 }]
' H  y& d/ a7 ]5 Y  R- [set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
- z8 S  i1 A0 t3 G6 z8 }set global-reputation-list (replace-item j global-reputation-list new)) T+ w3 m! y) v( m( v
set j (j + 1)
$ ], X) t7 u* G]+ w7 F; U$ I9 X/ v! r
end
8 N$ k4 K2 ~% f3 `8 \# K3 i  d( J
% |3 s: E6 s* `' S& ^- ^
1 Z6 ~! C* w  {* Q
to get-color5 |+ C" \3 y# p% n- h

3 ]' Z. I0 e5 _  I/ ]: G  p$ D0 cset color blue

  [7 ^! l7 q  Vend0 c2 S! D1 T1 l: [. B/ U) X

  l6 R. g* Z& c1 ^to poll-class* Y  |" e2 ~0 `& p0 O4 ?
end# @" l/ d# V, m7 ]6 p3 \. w
) v! I+ v$ F5 g6 _9 \% ?& w# M! e
to setup-plot1
) Z7 u1 `5 N+ S/ R# k; D, m6 l2 z6 Q7 Y6 Y# W; v) c. Y
set-current-plot "Trends-of-Local-reputation"

& R) }( f; [5 Q# b; Z  ]! ^9 g
# g; V% {+ e7 a& d8 `' w" b9 Kset-plot-x-range 0 xmax

4 q* W( ^; o4 M) p8 B: Q! y) O* O( y" b) O) F0 m
set-plot-y-range 0.0 ymax
8 m; W0 n# G& ~8 z$ Z/ }: N1 `- l6 H
end' ?* ]. I7 [8 n0 r
+ E3 Z) b0 H6 C2 j1 i7 v, ]
to setup-plot2
# k" A7 R7 v/ ~5 A+ F1 T+ p, _
. Y' Q% m! g* q% k0 c" g4 e  Kset-current-plot "Trends-of-global-reputation"
2 j3 @' w/ \" F0 G
, _: Q9 E* L+ L$ Q: R/ r
set-plot-x-range 0 xmax

4 r, c+ @* u! w
- C; y/ t& e6 n. T+ Yset-plot-y-range 0.0 ymax
+ y5 J0 m! J) P/ S, D& P7 q
end6 V9 {0 V$ N) M, T4 B1 s" P
5 p+ X! }- H: W
to setup-plot3& ^8 ~% }( ?# e

2 i5 }$ ?: N; {set-current-plot "Trends-of-credibility"
; q  y1 ~: l7 ]( l: `% e

# `1 n" S1 U: t+ o9 e- Y( z6 Xset-plot-x-range 0 xmax
1 V+ r! E! G& o- U9 r7 S2 G2 [
2 h. C- T8 X$ `
set-plot-y-range 0.0 ymax

6 y# ]1 z+ L9 ?+ T1 s5 s* }end( r' @7 X6 X% r4 _; j  l6 X
+ a! R! k/ I# J' l6 F/ U! A& S
to do-plots
) ~0 }. N0 f, _set-current-plot "Trends-of-Local-reputation", M3 Y" y4 r( c9 z+ |  Q
set-current-plot-pen "Honest service"0 b, W# i2 v- E4 h
end
) J/ o1 q) s% Y* C+ U( n2 H' B
6 B) R, @9 s9 c! B4 t$ R1 P[ 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.$ h. e$ a" R6 s$ O: P$ e
, ~& S- j/ Y  b- I: @/ F4 Y0 F! s0 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, 2025-12-12 02:55 , Processed in 8.180925 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