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: 15993|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:
- g; f. f2 r  m4 M& N( W, uto do-business
) b1 t% _) x% b- A& e rt random 360
" l: L4 _3 Z+ w7 I* E5 k fd 1* _, y* x1 v1 c  H
ifelse(other turtles-here != nobody)[* f: g! t8 _1 I% a0 Q+ @
   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.1 O+ R& B5 l8 U; f5 b
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ' X2 Q$ L; |0 y! G( y) V, n, v
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
; m2 }; Q5 i' [7 F9 Q" Y3 E   set [trade-record-one-len] of self length [trade-record-one] of self  v3 n+ q+ g9 ?8 ]- E/ }6 Y/ }* M
   set trade-record-current( list (timer) (random money-upper-limit))( ^  d9 V& V8 g( z
* \1 y; r! Q( R7 i( f+ i
问题的提示如下:# c: x3 S6 ~* K
% V9 _* d! b, J) c/ g& \
error while turtle 50 running OF in procedure DO-BUSINESS( s; A% [% P6 i2 ~" h
  called by procedure GO
( A; ^# E2 j  J( Q- |; W+ \5 |OF expected input to be a turtle agentset or turtle but got NOBODY instead.
" O, r" B4 O+ W5 l# f/ N
(halted running of go): S3 r0 k% i7 c6 P; }/ q

; G1 ]9 E$ R9 B: ~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~~. r* e" _8 q3 N8 f5 @) t5 h
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
. D. y; |: f/ f) v0 Z5 |: mglobals[
! ~( |9 f1 r: c" \# exmax
  v$ m: z, W- i8 N9 vymax1 e; ]  x+ F8 S8 ]) p( M
global-reputation-list
' M" W# {: y2 U; f# x- q0 O0 A) g. z0 Z" v
;;
每一个turtle的全局声誉都存在此LIST* N- r, @1 T  R+ {
credibility-list! P6 \7 u9 S/ z! o
;;
每一个turtle的评价可信度5 {% v) e- Y5 d' j  Y6 {) W
honest-service
& b" n) O3 t1 A( U$ aunhonest-service
. d5 B9 D" Q1 [( @oscillation
7 P% r/ u6 A+ e! {rand-dynamic
5 s0 ]$ ^+ ?7 k8 Y; x$ T5 v]
9 N2 l$ h6 |' u4 {* G4 l& ^6 a8 @' \% _& ?7 Z) x9 W
turtles-own[' P5 C1 H( J* W) K! b# ]" }
trade-record-all
7 w7 f9 H6 g' I' n( ~) j/ F: U;;a list of lists,
trade-record-one组成$ B# q( u9 J! G# b7 F
trade-record-one" N7 J9 S: c9 x
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
& b* O( [3 F+ Z- |- G& v
! t) V6 o! L8 k: X/ N;;[
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]]. p: r2 t; ~/ ?' R5 {4 ~8 h
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]
9 \9 w8 {- d: j2 S8 a' ?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list5 i+ l4 [- Q4 z3 Y! ?" ^
neighbor-total5 z: W% Y& O& ~7 m
;;
记录该turtle的邻居节点的数目
& u8 J+ _) q! n+ k- b2 itrade-time
$ ]( h4 Y, g0 E: G;;
当前发生交易的turtle的交易时间! ^: A* L: L: N1 g2 U+ A- [% v
appraise-give
/ a. l0 y6 B5 k3 E0 U! w- o4 x;;
当前发生交易时给出的评价4 G. R' M, }' L! P1 Z
appraise-receive
4 a0 }# l- N: ?1 R+ U) Q$ v;;
当前发生交易时收到的评价5 o  v7 W6 F: a5 u
appraise-time
7 Q" r) g! R& p* D/ y;;
当前发生交易时的评价时间
; A+ d! h+ F9 P+ @/ Klocal-reputation-now;;此次交易后相对于对方turtle的局部声誉  [8 h/ N0 c+ E, I$ p/ Z! Z- [
trade-times-total5 }: ~# t4 M* {" \' K5 b
;;
与当前turtle的交易总次数% h9 V/ r3 \+ Q/ E" p/ s- s$ @; i$ t
trade-money-total
/ g2 D% o( D3 G2 d- E;;
与当前turtle的交易总金额( N8 y* d! c( r
local-reputation
  i' ~$ x; [. `! v: L3 Aglobal-reputation
8 u' I. L1 I7 _7 x2 l) rcredibility
* D  X% P; L$ v3 A3 B, t% X; _3 g6 `;;
评价可信度,每次交易后都需要更新
# b. k: H! ?0 j9 v( R( X+ H. Ncredibility-all
5 x: Y0 n$ A8 w;;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- d7 V) c9 |, G# `0 w
( \( Z. x0 H4 A* }' y5 b
;;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$ n& d7 h" Y& y. W, l, y
credibility-one
; @: _1 R0 \% B8 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$ n2 k* y1 l2 i& l
global-proportion9 H: y: `$ e9 e9 L1 H: G% Q% K
customer4 [# \% j) s# A$ Z, I7 `" t
customer-no
, l0 C$ p1 ]" Q) {trust-ok
# Z4 S$ ]6 I1 i" O# Btrade-record-one-len;;trade-record-one的长度2 b# u: E9 j& s' ^( z# Q
]
7 }' b; s* |) d" i9 f) |) G7 L
) R) s) l  K8 A. W: {* O% };;setup procedure- U) l- e- P  H8 u
" |" j+ y7 h4 ^! x/ s6 |
to setup
1 g; {4 @$ I+ `
3 ^1 @( Y/ U: S. ?" i) _7 R5 K& kca

5 R) }6 |% O4 ]1 v# }
% X! n/ y+ D7 U8 m; a6 O, A8 J8 r; Q2 _initialize-settings

! a- R9 c) ~/ }1 r2 R- j
) o2 s/ @$ p) M0 ycrt people [setup-turtles]
( Z. f; G6 w" w+ A; J7 ?% l

- {4 ?* E. i( G  a2 ]reset-timer

6 q1 _- d8 X1 b6 ]) z4 U) {, V' i5 X& I3 a! H
poll-class

6 P& [& L6 W5 R" w
+ c$ \0 u, B/ f1 V2 O2 O$ _setup-plots

, L$ L  d: E3 T$ p9 P5 i9 V2 A3 Y% y+ ]/ R5 c# E3 x/ U; }9 O, w* [+ J* f& k
do-plots
, T! }; z* D: t' y$ t& a+ I" a
end* ~& G2 {2 d' `: G/ ?

/ h0 [" ?1 [/ W! v; K% M! cto initialize-settings( \5 {& K2 _* C$ [" I4 t* B

' I1 ~6 Y. G7 M' E* E. \set global-reputation-list []

5 J. Q8 U8 Q, u' k4 z8 d; R" F, k- z$ }
set credibility-list n-values people [0.5]

# b* |; M% C* }2 g4 ~3 `0 _% @- d) R  k( X. x7 G
set honest-service 0
+ w; Z% B- d% [, q0 E

5 e, L( D9 S. Uset unhonest-service 0

7 d# @0 w" L( ?/ }: ^
, U4 {* b  {. oset oscillation 0
. s1 ?2 ^4 ?1 U& G) \/ U
) b+ i9 A% l; ^! ^
set rand-dynamic 0
$ _, N& [! V$ f' b+ q, N
end* b& }) X+ H  `; Q$ S

( S+ a) m; J1 r( C, _5 fto setup-turtles
* j$ X" t. z9 L4 w# \set shape "person"
; u" ]( [; p$ i! j9 Z! T9 r2 T; Rsetxy random-xcor random-ycor% Y/ A% W: |( L4 q9 l+ M% Q
set trade-record-one []
) e: _! j) }* t8 W5 q5 r+ c' b3 ~

% V& S* ~% j- y9 a6 j/ I. T2 Sset trade-record-all n-values people [(list (? + 1) 0 0)] 7 ]9 ~' ~0 v' E! N5 z) Y6 A
6 t9 I  ?' _+ B4 S1 Q! _* Y
set trade-record-current []. c" o8 k* t5 ?  z# L* n- t
set credibility-receive []
/ B4 I) F& V  g8 i6 Q# c7 l" `2 v  ^set local-reputation 0.5* J# j" {- |; T( c
set neighbor-total 03 @+ p4 {0 o/ T$ P1 G9 ]( }: w$ w
set trade-times-total 0
+ M  O2 q, \- m5 v! g3 O& K0 b( hset trade-money-total 0
9 \9 X: O1 S; c& I: Zset customer nobody; L& ]% L7 z  N% ]' n
set credibility-all n-values people [creat-credibility], D/ w7 b8 e& m
set credibility n-values people [-1]
+ Q4 r0 T7 r! Y) n- hget-color: v9 i8 d+ `. J; C

+ y* X, I) U. U# X6 \6 ?end0 D& U- r& {+ H, h( b
+ g# F8 `% B5 p  d8 U+ l
to-report creat-credibility
' |8 D0 h/ @  V# a0 H( qreport n-values people [0.5]9 p) x4 G" ^6 j9 H" {+ @1 V
end0 {5 i+ I$ G* ~
  o5 M( P0 g& B! J
to setup-plots0 }1 W8 [/ n* C) s- a; ]% J, C
" k7 R& n& ^( S) W/ C
set xmax 30
; H6 K; p4 S( e1 f# ^
' i; ]% r; c  P' H8 j, z
set ymax 1.0

4 z7 z8 e4 ]) h" }- ^5 ?) s# a8 F1 J& k9 e' k2 s( ~. o/ k
clear-all-plots

9 K7 I: K3 j9 [$ e- _* G2 v% Z$ J; F4 B4 K. D4 o
setup-plot1

& o5 e. b- {1 c8 f
2 e% n( Y- L5 G/ ~+ Ysetup-plot2
! s2 n/ F$ I- n6 h9 G' t2 h8 K0 y3 n

7 a1 I* Y' \. Gsetup-plot3

* H+ ?/ {  z  v6 u+ D1 tend
& d  q% T( W$ `1 L; K+ P
: G' h( F7 `7 P;;run time procedures
0 F$ K7 n( F( Q$ ]  v: e6 Q3 X# g  F1 `8 K7 }2 A
to go  E+ H3 r, F/ [, M
9 }4 C5 \1 u" U9 K  m4 d' N+ X
ask turtles [do-business]
4 b& D% Q% a& V3 f; ?
end
- z* b# I5 I) c/ M3 e
% k' W8 X2 m- f& cto do-business
1 T; Y% o. v* f) a) c8 C6 M' i
# w+ b4 @, e, i6 ]! z' p, F
) o$ ~8 P2 Z! U7 ]: b
rt random 360

# G2 y/ f3 a, B" R$ P4 o0 I# S8 [+ b) a0 A3 {
fd 1
" M0 C! B6 a3 j! U/ w

) ?5 e# ^; c% Q9 K3 xifelse(other turtles-here != nobody)[
/ k! `5 x2 K. S
. ?* G: n, N7 ~  o0 f
set customer one-of other turtles-here

6 Z5 F2 B  @# W3 S% C. D1 Y7 w, D8 D0 B4 c5 Y+ n' J3 V
;; set [customer] of customer myself
: ]2 ^0 O3 g$ L0 `1 ?7 x. @9 g, e
  ]' g7 {4 U6 y- k/ s; M$ f
set [trade-record-one] of self item (([who] of customer) - 1)
6 P( C( B( k2 Q# g1 ]. U8 b3 J[trade-record-all]of self
& w& `' D6 f" i: b+ \4 g. ^;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

/ O8 L0 y/ D# |3 X) T" I, n' n: o; L; Q9 c
set [trade-record-one] of customer item (([who] of self) - 1)
# Q# R0 r+ l1 \[trade-record-all]of customer

: J: A  d) \6 v4 u: ?3 ^- M4 v  L/ i0 d3 l! h! y- I. k3 R5 I
set [trade-record-one-len] of self length [trade-record-one] of self

. i) Z" q* W3 |  \- [4 m  {3 F0 u. N/ N/ f9 ~% v5 c% |) t
set trade-record-current( list (timer) (random money-upper-limit))
" F8 y' O7 K# X9 n  N' c
6 z$ K0 ?8 E+ ~7 `0 I6 [( M
ask self [do-trust]
0 c, I4 c9 |$ ^;;
先求ij的信任度. ^! i6 Y5 u4 I# g$ c8 H: i/ q

& @+ `7 L' ~  j% \8 b4 dif ([trust-ok] of self)
  [) @' e8 i8 q1 v. M;;
根据ij的信任度来决定是否与j进行交易[* k' ]4 z( f/ H% F; I) D
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself  o9 ^$ q1 X3 U- {- a# o8 K& Q. J

4 |) {) p8 r8 z, m$ n. t2 P[
1 E$ p6 `! f$ R+ n. F& M

! {. N5 X. G) @! `# s5 Fdo-trade
! Y2 p2 ?  _7 |. ], }$ c% `

! G+ H+ d" [9 t0 G& T1 vupdate-credibility-ijl

5 e  z6 K) x$ ?' S1 l; m
5 z4 h! R. m/ ^/ k. R) kupdate-credibility-list
7 }0 h4 t( N9 J4 ?( e7 n
. W- A7 h  r- b9 v7 U. l7 [

6 F1 M( k9 ~$ C/ C4 t  d: Yupdate-global-reputation-list
: K& j$ M9 g' h- K
' _7 E7 Q3 n% A) @+ O
poll-class
# m# k- b3 x# V4 s& {5 k

# I1 M. t9 ]3 F# X% d1 i& W4 r# }; jget-color
( k: Q3 P. h4 {

: `0 R* i: B9 D: _$ X]]
4 I3 O1 F3 w: Z% Y$ C1 Z- ]% C, Y3 }( o! p
;;
如果所得的信任度满足条件,则进行交易9 h$ Y: C+ D; d/ u# h1 o( P
+ ~9 }' m( M6 y  G- H
[
* n# Q% z# `8 {7 C9 U3 G% n# r

5 S8 K) t' _: Drt random 360

# [* W; ^$ h/ S9 n" G9 \  q6 ]$ J' K
3 N& B7 T5 X! ^0 z# J% ~fd 1

+ m$ V  R+ ?* @$ _$ ?0 O' {
9 l- i$ D! c) K& d]
8 `; @6 y; k% R1 ]. z' x

! W7 M: |6 e" g6 ^end
9 b6 S: N* C; j6 U; G1 X4 L
  E; [4 F" _% b/ H! @
to do-trust - J* y4 f) d$ U2 a5 X- k4 a0 D! H9 s
set trust-ok False
6 T* }- l1 O% R9 Z
# E7 }8 |1 j& u7 V
$ |. h; b& m# x9 e5 [7 w* T
let max-trade-times 0
# y) |8 Q8 E( O, lforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]5 Q' ?3 Z' l. }$ i; h$ n, I
let max-trade-money 0/ m2 k( `4 `# v! o3 U4 P
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]5 f( Z" y# p% |% r) y
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
9 v3 H- q" z; S0 Z8 r9 ]: Z9 p( j# g# F9 R  \) }
2 N4 \0 S" D: b. x3 m% z
get-global-proportion
* e. {: f# h: d. N3 D4 E6 tlet trust-value. ~6 g  S  X, x, [# X: H
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)

7 d1 R$ b' ~% ?3 G- @if(trust-value > trade-trust-value)
7 H4 R. }  X! ]. T6 o[set trust-ok true]
+ r% |8 X3 ]# a- c) bend
& g& n1 u; {# X# b, |6 z7 \% t4 K: E. ]
to get-global-proportion
9 ~9 c. Z+ j& Z1 n; u, ?( }5 Vifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
9 u2 Q, }9 _+ C7 z9 m9 `1 ^[set global-proportion 0]. Z$ h) Y, U3 ], n
[let i 0
, w4 B* K: y' A( _' l& Dlet sum-money 0; n0 o/ c* ~1 v8 D) Z) U& u
while[ i < people]
& k4 T+ J* S- H" X1 U+ l& p[
& ?% g( b9 ~' G7 Tif( length (item i
. i: N  y) W5 e5 T" u[trade-record-all] of customer) > 3 )

; x0 N( C* {* ~! j0 c[  s, [1 S4 s6 F; M! z
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))4 u$ T! D& w- @, z+ ]. n
]* v$ @$ B$ w5 V
]1 f- a& N& d6 i! c; H2 Z
let j 05 A7 @3 ]8 T8 `$ b& @2 b3 K, i
let note 0* w+ m. `! j4 q8 _' T
while[ j < people]1 U2 |; k# A  }3 H
[+ R/ T2 ?+ ^: q; w8 i% v
if( length (item i
0 C& Y; b$ I# ?& G[trade-record-all] of customer) > 3 )

5 s. L$ m/ L' ?/ l- N  N. t) R[
$ [" M3 a9 e2 o! n( jifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)9 A2 c( R0 k! U* K) Z
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]) I7 h' ?1 y8 u1 t; G8 u2 W1 ]
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
/ r& B& v& i" }% r& x# Z/ v]8 M( F0 c* P$ R
]
  ^3 ~4 ^; A5 {3 W2 O$ |+ @8 Mset global-proportion note
; m4 G6 r! ]  p- Y( C]4 z# ^. |' h% _
end7 Y* t6 p9 `$ ?: ?3 F

8 z( |: y1 o- V# B- J  y1 O6 _to do-trade7 {' O4 q& v9 U2 o7 x% z
;;
这个过程实际上是给双方作出评价的过程
% y) u! T1 q, @$ i7 y; v1 eset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
6 p: s3 K5 B8 l! S2 |set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价6 U0 S3 T- a) K/ x" |4 u) S; z
set trade-record-current lput(timer) trade-record-current
5 R5 e5 [3 h, O& D3 m/ t;;
评价时间
/ z4 h) g3 Y: ?- Oask myself [
  j  }5 i. E1 ]( Vupdate-local-reputation
1 r1 [1 m. l) N4 q- h" U) jset trade-record-current lput([local-reputation] of myself) trade-record-current
8 K+ v  l5 |% o8 z$ a! I]
/ p# e* b  R7 m( W) Iset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
. z, m* ?6 G) h& s5 d3 c;;
将此次交易的记录加入到trade-record-one+ d# Z) I  i/ t
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
; Y+ o2 i1 u) f) v/ Olet note (item 2 trade-record-current ): I( q5 G; l' x
set trade-record-current2 b0 M# E6 S) P5 P& b& X
(replace-item 2 trade-record-current (item 3 trade-record-current))
3 _1 ]- v' r8 K6 M( {- |+ |
set trade-record-current
$ F$ A, B4 `1 X1 R% \+ d(replace-item 3 trade-record-current note)
/ |  c  T/ C, F, d% H0 L8 K1 e5 E3 x  R2 M! _
# E& F4 V  ?% p) `3 x& J3 g
ask customer [
+ t5 t" I5 D$ b$ O' vupdate-local-reputation
) H- j) S) K3 h' ~set trade-record-current
5 n8 B% v+ s; o; n) H(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

9 S* H5 `# t0 n9 b6 E: U]
7 Y  Q. }$ f. u& c0 m0 F8 Q' [( W6 h  u) p2 f" I: c
5 T4 G' L1 I" G% h
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer4 R2 _8 b1 c% t/ `1 u, F1 ?- d0 H
: e, N' X; b; w3 W0 Q: v* b% `
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))+ l6 r# W. Y8 V  e* D6 m4 B
;;
将此次交易的记录加入到customertrade-record-all
; ?3 N% H- e4 G* d4 P' o* Y. ~end
  i1 r5 P, a! {; @9 t' G% O0 @; ]4 g$ a0 ?+ p) ^
to update-local-reputation8 L# u9 `, K/ G  {, Y  L
set [trade-record-one-len] of myself length [trade-record-one] of myself
' U9 q* r; f. t8 V! A% y& K' K; C7 F( a, l
4 O  }, j) J' n* k+ d
;;if [trade-record-one-len] of myself > 3
* g' H$ I5 x& p" ]
update-neighbor-total
3 R4 i7 }5 v& i9 i;;
更新邻居节点的数目,在此进行
/ n, D4 h$ \- tlet i 32 }$ ]. b  G0 `+ S  b
let sum-time 0
1 V9 e8 m* d, Qwhile[i < [trade-record-one-len] of myself]
" b+ G# n' d+ e# V+ z[/ t0 g7 J" Z8 ]! V; j
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
5 T( ~" K6 t, H8 h+ w, d4 `set i
" c) l9 P& S( z( i + 1)

+ |9 D) c: F, z3 x+ d. j1 s]
0 B% x3 d3 ~1 B5 Q& s$ g( tlet j 3
3 }0 L3 q. x4 r: v5 glet sum-money 0) j: s. \. ]; a$ _$ j5 Y
while[j < [trade-record-one-len] of myself]' d; g* L; @; z5 n/ i
[
+ W* U7 T9 U4 [  b3 a8 i1 hset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
4 j: \2 \: ?! h& ?! r  cset j
9 t! u* n' l6 C% v( j + 1)
5 M4 @5 u" i) `. R9 _
]
) U  m1 I2 s/ h, n3 Vlet k 3: K. k6 s& E6 ?7 q+ N- J7 h2 m
let power 0" B; n5 y, ?" H2 r" d$ {5 Q
let local 0
9 f) l" D! d7 c& q8 _' Swhile [k <[trade-record-one-len] of myself]
/ ^8 |' q1 Q# S* D& h; N0 q[
1 W5 r$ x' s. J$ o# {* Pset 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) $ Z0 O0 f5 |# W" j9 ^
set k (k + 1), H( J( Z7 N8 V" k/ u8 {& O
]
5 `. f. b5 D+ v! w1 x/ @' n7 O% nset [local-reputation] of myself (local)' E; ^' J( _, w( P
end
/ C/ C! c3 R3 q" E& l
. I. g( q/ `# S# bto update-neighbor-total9 M/ C: D7 W2 [- w

1 X( Q, K, K/ q# B+ A7 wif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]) ^- W7 q0 A$ q' Y

! E6 [$ u1 D5 F2 W2 F
7 Y6 _+ [9 p8 B  l# j6 F
end
2 |) r' {5 O- X; P' J5 n4 [1 Z
' m+ c, K- |; N9 u( H" R/ jto update-credibility-ijl / p/ |3 u  r/ t% i5 g+ G
: u9 U7 g( S) r' Y
;;
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。
+ D% \; y, O  U  B3 qlet l 0
/ v6 S) o' p. v5 r! a" owhile[ l < people ]# n; H* |# K: s, j4 |8 y
;;
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
8 x) L: }, N  M* r5 J6 h' h- b[
: f' f9 I  l( ]let trade-record-one-j-l-len length item l ([trade-record-all] of customer)/ N& J3 y# l. |' m$ R2 x! n
if (trade-record-one-j-l-len > 3)8 h. c3 A/ L9 p6 G9 w6 t
[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' }' L' G  }7 ~# x( Y4 R
let i 3
# W: u3 Y( `5 k/ Ilet sum-time 0
( m% L- K, T6 P/ D2 fwhile[i < trade-record-one-len]
8 \' K& [$ u2 J5 k[
$ e' h* b5 G; r, X$ A, k' t( ~7 }, {set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
! ]0 |+ ^) m. d% U; m4 w6 @set i
$ q2 X8 X& u8 C* y& z  j( i + 1)
( l9 f0 W  b. ?( n( P9 Q
]
( t. ]8 x3 ~* E$ k) V/ f% j" ?. Zlet credibility-i-j-l 0
! u  B0 M  B0 V;;i
评价(jjl的评价)8 j/ w0 O5 Z' Q6 D, _
let j 3
! a/ @/ ^, f6 U: @let k 4
+ z. r+ T' s: ywhile[j < trade-record-one-len]. q& A* [5 m" I, j( y$ A8 j& w
[
, g0 R" ^5 b3 k  Iwhile [((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! J  Z( w9 R, ^6 m; v
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)" a- `) p$ @5 G/ @0 O
set j. S$ h2 ^" I  a4 ^5 w- r3 A  H/ f
( j + 1)

7 c& d0 ?9 K% I  f" T! R, []
; ]* ]8 r1 n4 P! Gset [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 S; ?9 I4 a  G& R, j& r6 @

" H, b* _* f0 c) h/ \6 ?: p
, v' \: H, n) X! p
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
: p  V6 W0 Y! A7 D# W4 X;;
及时更新il的评价质量的评价
% j4 m; n' |( ~set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
9 e* ]- Z3 s  U/ z9 xset l (l + 1)! V" y. ?' y. m$ U1 G
]0 {  W6 f' R- U1 F6 ?% G
end, D) m8 D# O+ h5 `: ?

% c/ F. S- h) @  Q* Kto update-credibility-list
; j- d% V( d. ^" r/ w4 [let i 0; |2 Q% K1 Y! L5 z& u, Y% `$ T
while[i < people], }4 |6 B4 |0 N. q
[% K( P- n# R% Y: \, b! ]
let j 0
5 ^" J6 f1 m* u; ~2 i/ @% W4 flet note 0( ~1 M5 u" _$ J
let k 0
; q3 i8 y: v" v;;
计作出过评价的邻居节点的数目1 {3 d/ U" V; ?8 [
while[j < people]' E% v, m! D; O* }# w. g9 c$ E
[
4 p4 z$ A0 n# ^; q: j; g8 \. s7 Qif (item j( [credibility] of turtle (i + 1)) != -1)
% |  i% z2 ~6 @4 o& l+ }' l;;
判断是否给本turtle的评价质量做出过评价的节点
1 Y  k- ?" {; g4 Z[set note (note + item j ([credibility]of turtle (i + 1)))
2 m/ ^$ w! {% Q;;*(exp (-(people - 2)))/(people - 2))]
  t8 Z4 {' D; s
set k (k + 1)
9 m: Z+ p% U# N" h/ b$ ?]" n8 _0 H+ P, n$ H2 q* O
set j (j + 1)) ], i' ?% `0 m, `0 O' ^/ j! z' {
]( C3 }% m- ?2 w1 |; [6 c
set note (note *(exp (- (1 / k)))/ k), I. j& f2 z* w
set credibility-list (replace-item i credibility-list note)  b' e) G  ^; v+ M+ t& c
set i (i + 1)
& a0 R8 j$ g" Q- n9 h]
" W' |% Q- @8 A# Yend6 F; |9 x; o% U; R" `
5 Z( P9 @8 {; r' A$ ?
to update-global-reputation-list, e2 D- G! D8 `, q% U7 C' P
let j 0
# m  t9 c' W  Z' R# {. mwhile[j < people]- n5 b. y& X! V" |+ p0 B0 L8 x3 ~
[" T4 i3 W& T9 n& d  V0 d; O
let new 0
7 W' T' c8 ~" c, D0 Z, W;;
暂存新的一个全局声誉$ e, l: f; Y! x* m& ~* D$ W
let i 0* M8 i0 L( G$ A+ C
let sum-money 0- ?/ h- p5 O" o* z' l
let credibility-money 0
; T/ r1 q* e3 P, P; Q6 ^while [i < people]: t( E$ ]6 b% G- b& G3 }2 b
[
( d  @( x" C: c. s" Iset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))5 v2 l9 U  V+ ]  h8 _4 F; X
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))$ y" w6 h$ S1 g5 L$ s" r/ u8 Y! D1 Z
set i (i + 1)" T4 a) E5 {2 I- _% N
]" B+ Z  m8 _; r% K& d
let k 0" G4 y, v' b2 n: H
let new1 0
- E  n& x- H2 x5 U, S0 jwhile [k < people]
+ R; T. Y4 w6 i9 ^% G  L, n[
8 ?$ U/ w$ Y0 \" [; ?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)1 T2 ^7 q5 j2 g- Q1 A9 H
set k (k + 1)# D, t3 i- S6 u6 ~& L' \7 S
]7 O% D, }$ S1 z, ?
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) . x6 N6 D( a; P# B8 F3 J
set global-reputation-list (replace-item j global-reputation-list new)
- l2 ?# j2 u/ O' b4 H- [set j (j + 1)
% Q( p6 X' D. |* p) \  L! G& U]" Y0 ~. F# @- h9 [
end
$ h$ `- N7 f" g4 E3 r: Z" c
7 C5 W( b9 f9 f$ s6 s' a+ }* }. h8 _% A! V

, }& _- O9 ^3 {3 W* P, ato get-color& D4 U( o$ Q4 i; X  \) a

2 E" k1 x- P/ \7 Q+ q6 V* m$ @6 ^set color blue

5 ]+ x# D. h( _1 Zend' [) R% B; U( b9 M
6 D4 z" @( u  k) o7 n
to poll-class0 U. {0 n# b) L" r. ?
end
# s& k: K5 F" U, Z0 \* ?' h
! N: p: L. p5 Y; ?' [3 }to setup-plot1
7 z9 |! b$ q4 U1 r! B  j
, ^" W/ V6 x4 V6 q9 y, w3 Jset-current-plot "Trends-of-Local-reputation"

) H% ?$ m6 Z) K! R, s9 \, e; L7 A# e) e# I
set-plot-x-range 0 xmax

+ _% p4 r: J8 A7 ?& }7 v3 G0 g
, Y6 Y% o6 U5 X7 S& X- _7 {; bset-plot-y-range 0.0 ymax
4 u- e7 t* m) x* T" S; J2 t) j
end/ T8 b+ O% V( G& g2 b3 i  Z% t8 s8 B
7 d; ]0 ~( C: J1 Z
to setup-plot2
. J8 q/ o) B2 v8 d, _3 G9 N  l5 J( P& ~( }4 \1 S
set-current-plot "Trends-of-global-reputation"

' {- W% x: h  v7 G' z6 R7 ^3 d. @6 s- K2 Q
set-plot-x-range 0 xmax

6 f8 b3 d* J  k: H
/ M, z! _# U* h" Iset-plot-y-range 0.0 ymax
$ b# h' g7 d5 f
end6 v& n1 [( d( ?0 ?* ?% A

: d, `' J: V% ]! oto setup-plot3
1 [3 B/ P6 A3 a3 k, ?& f& A( v# Q' c0 K. r3 g# Y1 {
set-current-plot "Trends-of-credibility"

! Q% u4 G$ r4 g3 A2 X; k7 r
8 F: y" m0 f5 K- i* K. _' k  qset-plot-x-range 0 xmax
/ B7 d2 B' m" {/ K% }

6 o; e" O# `! Q( G+ [set-plot-y-range 0.0 ymax

. q  E- \% H1 w/ a& dend  v7 u( M' U7 U/ C/ u

6 _' K! f! Y/ Q, ]6 K, Hto do-plots
0 C& s! \' n; X5 m; Gset-current-plot "Trends-of-Local-reputation"
$ h6 H2 z2 Z5 e* b6 Iset-current-plot-pen "Honest service"
* a4 B7 \7 x+ z3 w5 E# N2 Dend
. F# f% S1 l/ a2 s7 l% z- J
! S. A% b5 r  J  ^+ w  U[ 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.
& S8 k2 |' w' @& p  t7 {* k( Z9 d( t: |: c! c+ e, z2 W1 t, I7 I2 E
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, 2026-7-2 08:19 , Processed in 0.017024 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