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: 12293|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:
, S8 K) M, |+ E" Y2 B7 s; qto do-business
& u* `5 y7 S  U2 \, m- `9 v6 j rt random 3601 T5 g3 p$ P3 I  N
fd 1
1 S4 Q/ X$ K7 O1 p: W/ D ifelse(other turtles-here != nobody)[" z1 |7 n8 Z  m" l) ?
   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.
8 Y4 l& k/ x0 B/ d7 A   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ' S: H  y3 x. {' _
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer8 J( z3 a; G% _% t( S
   set [trade-record-one-len] of self length [trade-record-one] of self& h- n# w# G4 S0 ]# v5 b9 U  V
   set trade-record-current( list (timer) (random money-upper-limit))9 I9 v1 Y/ e+ \8 K) R1 h
2 |- y  G( p8 _7 [
问题的提示如下:2 O/ [7 z5 V. E# Z1 G! S: ~% p

% O- H9 b) J3 q8 u2 \6 n9 _- Merror while turtle 50 running OF in procedure DO-BUSINESS% ^- r& l  k0 V% U
  called by procedure GO
* \2 ]( m) N5 I/ Y6 U/ xOF expected input to be a turtle agentset or turtle but got NOBODY instead.' \( N  e1 \* X: i6 ~% q
(halted running of go)
0 S9 P. k7 X& X/ |4 d, C. ~& T* W2 T% F! T8 h/ \
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~~
+ Q' w9 W! o' r1 l9 e5 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
& I+ V4 r6 W$ nglobals[
! m3 G: _( k! H- ^xmax1 |' k3 ?/ H4 J
ymax
! p$ @9 y' s/ Oglobal-reputation-list
- J7 J. y  `% K" a# C9 b( C- k% d! ]# f' e1 c5 T
;;
每一个turtle的全局声誉都存在此LIST
6 ^  ?; ~/ a3 M. E9 U8 K; F% V6 scredibility-list
$ I8 b. l9 g* q  j/ m$ v3 `;;
每一个turtle的评价可信度; p; A6 n! l5 R2 [, k! u
honest-service
# C4 g2 A# K3 f$ F6 [9 U, @unhonest-service
$ f$ `! ~0 a' Y$ x  toscillation) j7 X! U! s) a
rand-dynamic+ O* m2 ~- l( o
]0 C; m9 _1 H2 Z; e2 u4 r+ g  t% M

8 S" h* o4 H; Mturtles-own[. d$ I9 Y# e0 b/ }) p! D4 {
trade-record-all; J+ u) d' L) Z% ^  c' }4 p
;;a list of lists,
trade-record-one组成
% E% v' N* C; C! Z! v) u; atrade-record-one
- Q4 H; G2 ~5 _& A; K" Z" c;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
$ q& X3 F* N% K: k6 k5 Y: c7 A! V) e+ f$ ?% C* T$ M7 n, Y
;;[
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! P6 V2 x, U6 Q# {( }0 Ctrade-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]
  p9 x( D+ _" O" @6 }( [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list3 q1 y8 E: v8 k8 L, Y
neighbor-total
& b2 V' F& G1 s6 o;;
记录该turtle的邻居节点的数目
* Q& E- d! a5 k8 C- L9 t: \trade-time
  q& z$ z0 A, d: P" G3 _3 ^# d;;
当前发生交易的turtle的交易时间
% K7 i, x8 H- [8 V3 c; P$ Zappraise-give" S8 m6 J9 ^! S
;;
当前发生交易时给出的评价
9 q/ z% e0 z+ J, fappraise-receive
. Q) g9 G0 R( i; r3 |( K* G;;
当前发生交易时收到的评价. i8 f- j1 U4 y7 S( z  Q: x
appraise-time
9 Y4 o% T( a: W$ _! m* t;;
当前发生交易时的评价时间% V8 W* I; Y7 S
local-reputation-now;;此次交易后相对于对方turtle的局部声誉- X2 h3 A9 E- b, O1 D
trade-times-total
% P# J/ ?  L0 }1 N; [& [;;
与当前turtle的交易总次数2 D+ v" p$ M* ^* x; M/ T9 v& H8 Y
trade-money-total9 `" W- F% @9 r5 z$ D, z( ~
;;
与当前turtle的交易总金额# n. H3 A# d! n3 D7 b( m4 t! Y. u
local-reputation! C+ ]+ R6 @2 z
global-reputation1 U# p& s2 z; H5 E
credibility
0 d4 n- Y* i4 C1 j2 m! \;;
评价可信度,每次交易后都需要更新6 ?7 G; W) L, \9 \; B5 j
credibility-all( |0 P- \+ `) F/ a/ B, N) [9 \
;;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
8 c" z, ?5 n' A0 K. ?. W7 S( I
3 o% l& }* ?$ f- g6 C;;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* m, @) J3 N. I3 M! i# Jcredibility-one0 X. h+ l+ I2 A1 z0 u
;;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
+ ]) o) Z4 `6 i8 c8 j; p- j- sglobal-proportion& H  q$ o. |5 x' d7 G  |# ]. G& J
customer* A2 K, l  g" K' w' f$ G
customer-no8 A% ~' z  D- f" \
trust-ok
7 D4 {) a% A/ a+ g, o7 H" Ztrade-record-one-len;;trade-record-one的长度% J) S6 y; C$ E' \" e- N+ ^* i3 ?
]
+ P, k' f% y& D: E, k* b. l1 C1 M7 W0 ~! W6 [% @2 l
;;setup procedure
; Y- P2 v' V* H+ K1 N
' e! ]3 b2 m8 S( K: I7 ~to setup
0 a% }" \( x8 ^' V# Q% l7 ^# h4 G) |" k
0 \7 Z6 l- j, s" _; _2 o- {6 ]ca
% B6 ]2 H, K, w) F

$ \! z. i+ C# l( ainitialize-settings

. t2 Z, ^8 Y0 t6 Z( y/ _
6 F. a7 l7 _  p2 d( bcrt people [setup-turtles]

' [2 S# _  p- F5 i) |$ b, x& x! f/ n7 T2 b; a/ g" y* U5 ]
reset-timer

% V/ L' N6 ]; _
# ~/ @3 ^% G. Z$ [  ~9 O6 N& Ypoll-class
& ?; }& ]( Z+ P& z, I

; Y; N4 H9 L( U+ ~. o3 s5 psetup-plots
8 Z9 D) B4 s, V& G0 v

0 p. d9 K0 k8 k( Y; _& Jdo-plots

+ h& S! g& V2 P8 _end
1 k# t& Z+ y; d, j( y5 T: ^0 |2 S7 g0 m  E
to initialize-settings$ j- g0 z; O8 @$ M3 e4 O1 U( d# V
) ]4 G, [7 a- n
set global-reputation-list []

0 d$ l+ k1 x5 I
6 I! r& Y5 P* Y$ eset credibility-list n-values people [0.5]

; }6 H" v# B7 u5 I
' c" y* K( v8 Q- q! x. @set honest-service 0
9 O, l7 k* L# {1 t! b- [

4 Q. {; ~; O: H, [7 bset unhonest-service 0

/ @5 E3 {6 J& ~
1 ?' e) B4 f- k9 ?set oscillation 0

' V. |, T& l$ E9 o6 m' a# z" z/ p% T+ A- H$ E) |6 s
set rand-dynamic 0
9 {/ _+ r8 B& C, e
end3 J' M* Y' j% M
" {" j) a- g4 ?# l! c
to setup-turtles
+ }- X" t- v; I0 T) Nset shape "person"
+ i6 a9 {3 W8 c8 csetxy random-xcor random-ycor
2 B% G* z- I8 l3 l" bset trade-record-one []
2 z# g6 X: x2 T) {
7 g% I! T; N5 g
set trade-record-all n-values people [(list (? + 1) 0 0)] 1 g* O; D% b8 Q9 j7 i) x4 u$ F0 b! A, a

5 M! N) T" M# wset trade-record-current []+ b5 B6 c) Y9 j. d9 g+ y% @
set credibility-receive []/ o! f% b% y+ b  k
set local-reputation 0.5& [4 ?- f! G- M+ D& j; O3 L( Z
set neighbor-total 0
2 e: e7 i5 [5 yset trade-times-total 0$ g; w! z9 H  f* V
set trade-money-total 0' J1 i* m6 f6 d
set customer nobody
7 `  m8 r' C3 U6 w% d' ^& H/ ~set credibility-all n-values people [creat-credibility]7 y" S0 Y& [) @0 f: s+ E
set credibility n-values people [-1]3 U3 Y, i6 F1 _5 H1 U' t
get-color
& w# Z! _; _6 A
+ ^6 R0 I: k$ N; d
end
/ N" s! v3 Z+ x
  n+ @! |  a/ |, Fto-report creat-credibility7 A. ~0 H- p" A" I
report n-values people [0.5]
# L& E9 a4 i+ m* D; e. H& mend; c" E' }' l; ]5 O4 D
9 u4 K+ a* v" O" `$ r' D: p5 h5 _
to setup-plots1 g/ i9 L3 d" O, ~# _

  g* S( Y" D' [0 L! ^4 Bset xmax 30
9 U1 \! S# J  u' U: y/ }# S

9 \+ Y9 L% u3 a- X3 U3 T) o2 iset ymax 1.0
6 m; M+ P3 i3 X6 t8 X8 R

8 B% Y9 S# e5 t8 ^- z& [4 u4 W# eclear-all-plots
- R0 x' X. ^+ C5 N
; t3 m6 r" E; P" n
setup-plot1

1 m, r% ^- D! f5 x3 O
' i' Z  i7 Y9 l! h, N, a/ A* fsetup-plot2

% ^$ R5 {, k; l7 _0 V9 f: t5 _/ E, U7 w- y( [( S) N- W* M- v
setup-plot3
# Z9 S: Y2 ?& v( @) V- b! H. k* P
end
# q) F/ K! ?( Z2 A. a' f- h9 U& v. V: h) e5 e& @" U3 B7 e/ w
;;run time procedures* @7 R2 q* P8 ]/ ~* H4 s
- v0 z0 y' M* Q; m; p2 J
to go* Y0 E, F) ~6 W2 B
7 z; r" |, G# i- C
ask turtles [do-business]

$ p/ @9 @6 Y+ F5 e1 Q& k/ Eend4 I" I' L, v, ^7 O  y+ O* X

; U, B# Z1 _; q5 y# gto do-business ' ?% l: n+ C9 W7 K6 V

) r5 M! n& ?7 e4 K) f
( k# Y& ?8 ^. u2 P* [) Nrt random 360

5 N9 a6 F" }( F4 ~7 q- {1 K! j) B& J: I% ^( ~, _# d* F0 z" r- p
fd 1
: y( {7 l( l  d

  |' ]/ [9 q- w: K5 zifelse(other turtles-here != nobody)[

9 ]1 \1 U2 q& j; Q3 i, {) g4 \7 R* i5 n
set customer one-of other turtles-here
9 W$ U  ^+ c% A4 V

/ |* o% |: Z0 l0 }* z;; set [customer] of customer myself

, I3 O1 y% d2 A' |
: Z1 q7 W8 ^( C9 n2 Y5 }4 {( [set [trade-record-one] of self item (([who] of customer) - 1)7 ~% t1 Z: `. q( R) Q
[trade-record-all]of self0 v0 m1 ~% r$ s: F7 R1 v
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
/ J% G, P+ ^# G9 \7 m; K. B8 P# U
0 S  M2 o1 B7 E) C' g
set [trade-record-one] of customer item (([who] of self) - 1)
. |# v/ `7 z" M) T: X7 K[trade-record-all]of customer

! @. f+ |  A: R5 u7 U' @8 u! ]2 |+ M% s8 \$ x: K
set [trade-record-one-len] of self length [trade-record-one] of self
5 Q9 k( }# \3 }* m6 V) g
7 e6 T6 M4 B8 l9 h& m
set trade-record-current( list (timer) (random money-upper-limit))
) x! {; \& Q8 [% A1 F
- t+ q0 Y5 @& O( `* {7 }# b# @
ask self [do-trust]4 s3 V" a2 C8 o8 Z0 K7 p( f9 k
;;
先求ij的信任度
4 t# `8 g0 x% `0 r( D) O0 {. h0 F; O7 `) s% [. y9 Q
if ([trust-ok] of self)
+ R  h6 c0 J! D  M+ l;;
根据ij的信任度来决定是否与j进行交易[* X: P! D5 e4 c' p4 k
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself7 a2 U- C4 [% Z
: ]$ q  b# [% n$ C/ v8 S" {& W7 s. f, a
[
# s/ l& j) U: E% U7 u; t
" E5 R, {3 |) ]4 M7 N6 }! q  ~! \
do-trade

0 j2 T7 v( q1 D3 f
( M/ b7 V1 q3 wupdate-credibility-ijl
( t+ G9 k4 F. Z8 {

8 l. N) Z$ d& A$ Z  _7 pupdate-credibility-list
) z- I3 G) y8 ^  z* y! O
' M# i! H! ^! _* Z/ P7 c1 h

) H: o7 [8 n; y% \, |5 p% Gupdate-global-reputation-list
/ B* G4 B$ e, t) e

- ?0 G! W& R* U; ppoll-class

  N. H0 c. Q& m! a+ }% f" l8 p/ {5 E! i) d" H1 b
get-color

( c4 R2 U: G% a; }2 u4 {7 d. b# i: ?+ }! H6 L& U
]]; \$ n5 m. g/ A& h5 O4 f
, A& n5 T' S2 z, l7 H
;;
如果所得的信任度满足条件,则进行交易" u) s- i2 y$ O8 t

# `+ R# p: O& ]' k, m3 |" u7 }[
/ z* L* ^) M3 Q( i: a6 h# ]) d
2 d' y, I; G& Y  Q
rt random 360

5 J$ A5 |( C! ^/ [4 `
. G7 Y, T+ D2 F. hfd 1

& R4 w* L- @8 u! o: g/ j7 I0 ?4 f0 ^9 o# y  Z
]
- M. m3 y( a* a

) y, J+ E6 E9 |end
# V; T" k5 N1 S6 t. @$ J6 V% {
& g/ d$ y( \* K% [5 Z9 o
to do-trust , S( D1 T7 F, b; |0 D
set trust-ok False
) q% M8 C/ z& p, d; u
& S: o6 b( }7 q7 j

$ G% L: N+ L* i6 P  xlet max-trade-times 0$ p& l, |/ T- C% N
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
# v- g; X# [# Z& R: b: Vlet max-trade-money 08 \% t6 G! F# [( W% ~! J; u
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]8 n; a! ^6 @3 }" z7 q' L" R
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
, t$ U! g: `* K
+ R4 B. g# N- V- d5 B8 W) ~

& w0 P; O2 M5 p/ lget-global-proportion
: X* J1 N$ k- M+ B( x6 \0 h& W0 Hlet trust-value! C4 ^  P! A( t: V6 J" u$ ~8 Z
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)

% N' d) `% t& o$ s# i. _! ]" Kif(trust-value > trade-trust-value)  y& R- G$ c0 e, N4 I$ \& K! _
[set trust-ok true]
# T: }3 r0 _' s4 _  x& L& Pend
/ w4 R9 a) _4 I; g: W. T) a. d" J1 b2 K5 C& j# x6 C
to get-global-proportion
8 P+ @: V' {. U0 Yifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)- N* t& C3 q8 z; e
[set global-proportion 0]% ^7 z$ Q5 e2 ]' h( f
[let i 0
2 M) M3 z- [) E( j& u% K3 Flet sum-money 0! c; J  @9 t0 i+ {4 _/ P
while[ i < people]7 t9 v- P, Z3 {% b9 g
[" k/ ?9 O" ?) Q# s/ A3 b- V/ H0 w  _
if( length (item i
2 _. D8 v0 Z0 b( _[trade-record-all] of customer) > 3 )

; A$ Q6 ~/ }0 s1 D2 v+ ^* _[
( k+ Z# z/ b3 iset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
# {2 k5 ]  j) n! o$ y! q5 ]4 ?3 V]" i$ K8 x  w0 k. F: C$ v! C
]
6 z( r  k4 C; {; r6 b' F1 G$ Hlet j 00 ^0 ^4 @: c" C9 r8 S- q* ?3 D- h
let note 0
% R2 P9 h+ Q6 @* @3 Qwhile[ j < people]. Z( x$ P7 y1 o9 j' A, \
[
9 c3 c* ?* v& xif( length (item i$ S$ x+ Q  R$ o8 u
[trade-record-all] of customer) > 3 )

' U( E/ H0 {, ], a4 R6 f[
- }5 `' w) C3 b. a2 m$ oifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
' B6 `7 H1 ]* @[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]3 k/ w# u; l) P* {: A: A/ X
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
' j; y. o3 v& Z  w- q  u5 f* o]( O6 g  d; C7 `# Y6 ^
]5 @- q# n" O+ T2 K* f
set global-proportion note* X  z1 g, p5 {2 g( M
]& i) e' `  r2 p  ^# H: R* K
end' N& D! H( O/ S( P( s* T% p8 D" m" O
, }1 v4 _8 P' J
to do-trade
% ^2 t$ U0 r1 l" D. S; f: o, ~;;
这个过程实际上是给双方作出评价的过程! X1 o! J' E* X1 J5 h5 p7 x
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
/ Q# W1 o- Z: f* w& Bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价9 H& E. K& K7 V2 C. S
set trade-record-current lput(timer) trade-record-current
6 ]2 M6 e. y  D;;
评价时间! ~* g5 m7 K3 F) h" r0 {
ask myself [9 ]1 C% s. l, d4 g# U3 }. _* G# Z
update-local-reputation
8 u8 J; A7 k0 p1 B( [& y3 Nset trade-record-current lput([local-reputation] of myself) trade-record-current3 W7 ~4 e) k( s* A: c: F8 q
]9 A( t- {8 k, o/ X& i+ X
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
$ \' e! W2 [$ E* W;;
将此次交易的记录加入到trade-record-one
3 g# @  m0 G1 n2 q: g* Fset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
% ?2 e3 P$ C/ G+ blet note (item 2 trade-record-current )
6 [* D" }- {) q# z4 p0 Kset trade-record-current0 ~3 W; M3 B' g4 i$ w8 q
(replace-item 2 trade-record-current (item 3 trade-record-current))
; C9 }- I0 ^, y" h
set trade-record-current: T1 a+ _' t! H9 k# t  K. b
(replace-item 3 trade-record-current note)" c" R  f. K8 @- M4 d
/ B  W+ v2 g% M# G
# w  f+ h3 I; L2 u# Q- T
ask customer [
. `* }4 T5 U0 r1 ~- ^update-local-reputation+ F* _9 M' t2 F- m
set trade-record-current
+ f5 d! V: l7 ?) Q: X( g(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

, k3 m/ H6 }+ b7 k9 []
( T3 M$ `# {  e: l4 ^6 R4 \  q/ d
) {2 H. w. _; t3 k# b" w

& V# B7 E0 X8 b( s( P- b$ \  hset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer" H& _6 z  A8 ^  ?, a5 I
; h. I0 S4 N. r& R- b- N- ]" l3 I0 a
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))# x7 g5 z  `% e# Y0 g
;;
将此次交易的记录加入到customertrade-record-all6 q7 C0 s/ E+ P9 C" e/ m9 P
end  [6 `$ z; g9 F# U& T3 K9 v  z
+ s4 E! W, z7 P7 X6 b  B0 N
to update-local-reputation
/ B/ j. c) K' G9 `set [trade-record-one-len] of myself length [trade-record-one] of myself8 v' o. F6 D# z
' v/ E! r9 ~' @+ o& [' g0 u

2 _$ F; `8 G' n( N;;if [trade-record-one-len] of myself > 3
6 F  c' M4 d0 O
update-neighbor-total7 N5 v2 u  s; Z; V" Q' S
;;
更新邻居节点的数目,在此进行
8 b/ X: _5 a2 p! p% d5 hlet i 33 s3 w1 ]; c& w9 m, L4 G; I: a
let sum-time 07 c' w2 Y* g3 _! j5 B0 _
while[i < [trade-record-one-len] of myself]" `$ L, G/ {: C/ [
[
0 I  `5 u7 r6 E& p# v# E: o; Wset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )) M3 P8 V) ~! P6 p1 }
set i
$ M1 h; @6 D  v( i + 1)

% o/ H+ o1 {7 ]]1 y' @. X* }0 _& q0 Y
let j 3
1 Y5 ?! j9 V( B! elet sum-money 0
, J' \8 K7 O+ K+ e; G5 U5 cwhile[j < [trade-record-one-len] of myself]+ O7 n3 `! B# Z4 k( ?1 d
[
% i0 i. }7 N8 g; n* sset 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 a4 O7 w! ]% k/ e
set j
& p6 Z. Y; H! _. l( J( j + 1)
0 D" Z) l$ P6 t" Q7 r3 w5 ?( Y
]4 F6 K7 w3 R3 B1 A
let k 3
$ ]. W5 ^" z2 T+ G6 Rlet power 0/ k% u" u2 \1 g5 Z/ _
let local 0
8 H0 V. g8 P: j9 Z% W6 A7 wwhile [k <[trade-record-one-len] of myself]
. H$ ]! P; v& O$ R; n9 h: ][
* `) j/ E) R# y; ~6 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)
; S8 r) T3 W* c! r/ oset k (k + 1)
8 x" o8 E/ i# H0 j]
7 b: F9 ^$ U+ ?set [local-reputation] of myself (local)
: \. G  k7 c8 _6 D& m9 B$ uend
) W& Q( {5 x+ y; ~1 H* U
" G, P3 d) g+ M; {3 ]! X4 Wto update-neighbor-total
- ]. x- V3 F- b5 i% R" X0 ^/ @; ?$ q/ x+ G
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]7 u: a+ O* j0 L  S2 j+ a: [6 |

! m( I4 ]+ l7 X; a( V' r

( a8 M! o5 m% ?* i" Send- q9 P8 b* l- |. f2 G; {
: b* z$ ]9 o# Z9 C; h/ N! _
to update-credibility-ijl 0 U, B' b& L+ H: L

% o+ r9 g- ], d1 e& p;;
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。
# u- r/ n7 Y: b9 y4 E( flet l 0
* d3 d+ o1 |7 j1 l9 m2 e* v/ nwhile[ l < people ]
9 k* }6 h! M  B. E" k;;
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
# D1 ?' J$ a8 T- K4 z- ^- G! {[0 ?( a8 K! h+ m1 a
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
& v5 ?4 F: y8 A! p- aif (trade-record-one-j-l-len > 3)
4 c$ Q8 O3 o4 a2 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
) ~, j' u% D* _/ ^& Z) ^let i 3
8 E" p+ h$ i/ Nlet sum-time 00 q% K6 G3 U  B% j/ S3 T
while[i < trade-record-one-len]
+ j, Q+ w- K) I2 A/ q8 z[
. v; p- r% V" I8 q2 zset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
) c( w/ q2 p1 h7 eset i  R7 Y0 ^+ B( c# t! c
( i + 1)
% ^8 {6 [" }  R) v+ y* c
]
  L; v* Q+ v) w4 ?9 @7 plet credibility-i-j-l 08 q$ d& @' L8 o% [
;;i
评价(jjl的评价). I1 `: w% L/ _0 T9 g
let j 39 B) B1 W# i# T, ]% E8 H% N- @7 C
let k 4
: ^, [4 T: E. |& Zwhile[j < trade-record-one-len]: N. Y' W) ^* f( l
[
! z3 i/ P) C6 Y! }8 Awhile [((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! h5 o# _' r0 K+ a- H0 m( z
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)
; y8 V2 e+ K7 K% Qset j! p6 p0 S3 V; A7 c
( j + 1)

* z. ]% [- g" g7 T]2 _' R2 R  W3 L  B
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 ))+ e8 v$ W; l. O- Q, S. V: x
% c6 K, k6 Y1 I$ U

3 {3 \" L% k$ A4 t0 N2 U3 jlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))$ }9 N( `9 B0 g3 t
;;
及时更新il的评价质量的评价
1 ]5 A3 E6 Z9 y3 n% M' gset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]2 Z* s$ B/ U5 V: O/ G- M+ a
set l (l + 1)+ p5 t" w2 R5 a: Y1 g: B. D
]
) H- F! C$ A! xend
: L7 `6 z6 Z" t5 e( N4 q. `* o" r9 B) {* v, U* S" Z
to update-credibility-list
' R" r5 H# \+ V6 M: r) E, d! j. |let i 07 R! |6 b- u4 L8 z% O+ {* H
while[i < people]
0 [: G3 }$ J& D1 y[0 \4 N! y( x$ _" q  S: r' }8 p8 P6 k5 }
let j 0) B* x3 e9 M5 s% J' V
let note 0
) M3 M$ n# J" ^' L( x4 Ylet k 0
( |- H7 ~* I8 {9 ?;;
计作出过评价的邻居节点的数目
+ ]* o, @2 T6 z! ]. q1 B0 H" dwhile[j < people]- z5 c9 w) T# a& U  w& c  L; _
[, L7 P& P: q/ u0 _4 [
if (item j( [credibility] of turtle (i + 1)) != -1)
& q+ v1 X( t# Y3 Z( ^; V;;
判断是否给本turtle的评价质量做出过评价的节点; B& F' @. N$ |" ^  Q- d
[set note (note + item j ([credibility]of turtle (i + 1)))
8 ~6 a6 s5 c8 `. L( ^% ~  n;;*(exp (-(people - 2)))/(people - 2))]

/ {& P( D) d; T( F# H0 l7 K, \  Cset k (k + 1)
  j/ C. d& Y, }1 y* M" [; a]4 F+ A" Z! s, S8 T  a
set j (j + 1)
5 H- U# l7 m' I- S8 d# g]
8 N$ K8 b$ x! B9 v0 T( mset note (note *(exp (- (1 / k)))/ k)
9 C& O1 ]' Q' x. w% q# t% v  vset credibility-list (replace-item i credibility-list note)5 m! M/ {9 P6 \
set i (i + 1)
: W+ r" v7 ^. ?- q! b: [# `]
! L( ^; D( a" g1 r0 ^2 G  Q( p9 ^end: i- q! ?3 f. K1 }3 [& H+ Z7 H' n

0 {* I' _8 o: {' M. |# Pto update-global-reputation-list2 ]9 d: _8 Y9 ~3 S2 m) \
let j 0
5 e/ m8 W- s( Z% Mwhile[j < people]; o4 p5 r9 \& O0 v
[
! w1 l; F' H$ i2 C3 Dlet new 0
3 n# }- W+ X& i. v( U% i( t;;
暂存新的一个全局声誉
0 ]' z% ?' F! T* Llet i 0
4 O; L# V5 Z) `6 R* `9 Ilet sum-money 0
3 v6 J# S3 L! s, K! [# Rlet credibility-money 0/ C; x1 a8 s+ O& |' T
while [i < people]
" M* o% k! F( a- q' ~" W[% A* _& K! R& ]6 x1 T
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
$ @# D, Y. @. K& P: \set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
. [2 |1 c! D3 p: i' l( @# Sset i (i + 1)
' F( w0 L1 O. X. \& T# H]- t% s% P  e% Z  e! m
let k 0
, P+ _1 U' Y! P* m, ?let new1 06 a: H* a) R" _9 R9 I+ R
while [k < people], h+ l5 ^' F3 t( h8 i0 [0 T& Z; ]
[
  k# B  Z1 X, W- w/ z' @% Yset 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)- l9 A& }7 P2 F3 p+ @7 n/ z
set k (k + 1)6 y; b( V% }* L1 z: g5 O6 b7 Q
]: L8 ?! Y- G1 N; z* ?& J
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 8 m8 l  N: A# |5 G
set global-reputation-list (replace-item j global-reputation-list new)
! E6 t, g3 |+ O, @set j (j + 1)5 V- L9 }* C4 |) f+ n
]
4 e9 A  w" o1 I2 y" m! Jend
1 Q' w0 ]6 r" m( x- [! E% g4 G0 }( M) z' P1 z
$ ~: r" e' K, R1 B
: J* i0 J0 W8 H0 ?/ q. V8 l
to get-color: H* {) ^4 q$ M$ L

9 m# P! o: P9 [* u* Pset color blue
& X" _+ D. e( |* ~
end" p7 k: O  x3 o

  i4 P  F( |" _to poll-class: Z& u9 W2 w5 U$ C8 A. p9 g
end" B4 {3 o- x8 l  N! p7 _4 |
6 n3 d. ^9 X' o& G
to setup-plot1
' Q! m: q/ g! X8 j+ y* a, f
( H6 |7 |) l/ c" a! a. yset-current-plot "Trends-of-Local-reputation"
7 D3 t/ ^* t+ G; ~7 Q  a

' U+ k. i" y2 T1 B. i& \set-plot-x-range 0 xmax

5 D8 W& U' o7 s% w! b* l0 f; W1 Q/ T, {5 ?
set-plot-y-range 0.0 ymax
' I7 D& o& r2 R$ M. g
end
' q: B5 J6 v; a, d/ a: p% L6 T
9 W+ L, v: V8 y: k$ Uto setup-plot2+ T3 t/ j9 I# v
4 c* {4 @4 Q' Y9 i% S% q
set-current-plot "Trends-of-global-reputation"
/ D0 D2 p+ t6 J2 E
4 s' m7 ~$ k0 }9 C
set-plot-x-range 0 xmax
3 s! s! z# ~0 }7 l+ ?
5 a. C$ z2 W1 v# g
set-plot-y-range 0.0 ymax
! H4 G& U* z1 d" S8 Y6 [! E4 Q! U
end- O4 S7 k: l& O: H% S8 b  s
7 w3 }  h: h+ D" V* H
to setup-plot3
# u" G9 X5 @' B# c  u4 w+ U9 {
) O& l1 P8 y" c5 m3 ]set-current-plot "Trends-of-credibility"
) ~. }9 {; {1 t8 I' K( \* G

6 l8 W4 t# E) pset-plot-x-range 0 xmax

2 K1 k; M: \9 v( X3 }: M# Z
% f( B  X+ G  O$ Y+ P) `$ A0 ^) rset-plot-y-range 0.0 ymax

/ U; j& |- n/ g+ B7 Rend
) G$ }# q: E  f$ U9 e4 x/ J( c7 e  H
) @% x0 c+ c3 K: ^- i3 a: h0 Wto do-plots1 D5 k& t0 Q( J: l  H  z
set-current-plot "Trends-of-Local-reputation"
0 T" z* }, |9 u! A+ Y5 r8 z! Mset-current-plot-pen "Honest service"
' B4 T1 M" v3 Y6 Jend  i1 q$ r; L7 ~; V7 a4 f, t

* w! t8 ]0 T- R8 q3 T$ K+ 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 q5 y( }$ x% D" V- d

& Z. F6 P5 i2 J( w7 w3 l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, 2026-2-20 04:09 , Processed in 0.026167 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