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: 17531|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:
# e! f( a; i( R! n; L# s' Wto do-business
6 C3 z: x( Q, k; d rt random 360
* k1 f& a6 ?  \ fd 1
, X4 ?) M: G3 Z" o6 u' x4 z ifelse(other turtles-here != nobody)[# G/ S7 i& t8 e7 g! H& A; t( B  _' c1 v
   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 U. v/ E" Z" f* F; c
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
. _0 L* N& Q) [4 Q: ~   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
4 O0 W7 Y# n# E( G+ f   set [trade-record-one-len] of self length [trade-record-one] of self
; e; m. T  E) t# I4 x3 l+ h   set trade-record-current( list (timer) (random money-upper-limit)), H; ]- [. P2 C5 p
/ p' A# e! ]' I. t5 H- w" d0 S
问题的提示如下:
+ K- y2 j, }! R$ K4 R
! @7 `: `$ E. b( }error while turtle 50 running OF in procedure DO-BUSINESS
: H' D; A6 I& g  K& l4 \9 q2 @  called by procedure GO5 E8 P% e- A' i, c0 J
OF expected input to be a turtle agentset or turtle but got NOBODY instead./ N: }6 a$ u& V/ _
(halted running of go)
1 B6 J! j# Y# |7 g) J9 f1 F. o* I3 c0 J0 w8 v$ M% o
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~~
. S* e1 M% l! A# r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
4 S/ g7 G/ o5 E& E( \1 Dglobals[
* d( D; ~  Z( A0 c  Q/ V4 w* o% yxmax2 J  ]+ B1 r1 G" C7 b3 P, \, A0 y
ymax
, K% d, ?' c# Z9 t; a. p6 y3 n* Wglobal-reputation-list1 P* `# P; g8 d/ [+ |
; U2 g7 P. X: D. }
;;
每一个turtle的全局声誉都存在此LIST
9 {( A( {8 h2 Tcredibility-list& @5 w  c& ]$ r$ Z
;;
每一个turtle的评价可信度
+ o4 \9 M6 F6 V; n6 U0 A  `honest-service
& L" x$ X3 O: W! n' ]unhonest-service, u! y7 v/ A" d, U: z5 ^
oscillation/ E7 b: s' K1 |
rand-dynamic
: ~7 }' A- P5 _; I: u8 C]6 s5 L. P+ D. b  t
! l+ g, S7 N9 E
turtles-own[
; r6 `6 T9 E9 A9 f6 _$ htrade-record-all
1 }; h* |& H+ A; ^, r9 p# w% l& l;;a list of lists,
trade-record-one组成7 r" ~9 N) ]# ^' H8 M
trade-record-one( }1 U1 ~% A# N* M& d
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
- D, T4 z5 j& _$ T
; v3 p% Y2 w7 \4 |' R;;[
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! L. a- V3 A3 g$ r/ V  D
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]
1 C  T, n8 t! x; S% b$ ], e1 Ycredibility-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
% b% H/ d8 T  u9 Rneighbor-total% l' h5 u+ G4 H9 N
;;
记录该turtle的邻居节点的数目7 z; c/ a- M" @) f. P. U" E7 R) ~" r
trade-time' N1 Y; w/ H$ G
;;
当前发生交易的turtle的交易时间
5 e8 W5 V* k) ]2 Sappraise-give9 i& g/ P6 O7 ]) n+ e1 C9 P
;;
当前发生交易时给出的评价
" m0 N# E( J. o7 `. _3 ~appraise-receive
0 q8 q- o& M( j0 p;;
当前发生交易时收到的评价
( L. m( o- w* V5 ~% A) P$ e% R! U- zappraise-time* @1 v9 V8 y  X, E
;;
当前发生交易时的评价时间
( G1 _5 @. X1 L, |) Q% _$ ?1 Z: tlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉* B% |1 U+ \2 c, e% r" f
trade-times-total
2 F9 G3 ^# J& z/ B2 g$ L;;
与当前turtle的交易总次数
5 X$ }! J! Z2 n) v8 Qtrade-money-total' ?/ B& V& X0 b, c
;;
与当前turtle的交易总金额+ O" g5 w7 N8 _* d5 i
local-reputation
8 \; {+ ~9 K% m1 }% D5 fglobal-reputation
- K( v5 r- f. b4 ?: J9 Xcredibility: O& h+ z; O' Q& W: k+ f3 U
;;
评价可信度,每次交易后都需要更新" k. K) a$ w2 J/ W+ _
credibility-all+ m4 x" u& |6 ~
;;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7 P# s6 K9 k6 G) I2 w8 p! l

; A( C+ o: y7 N" 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
; s. l- ]9 u' c# G8 m  E# m* q0 _. D6 U. Dcredibility-one1 x4 A5 j; [  z+ d, S
;;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
4 {* S+ J1 B/ w$ r! M8 Lglobal-proportion
# M0 h; W9 u$ w6 L7 w8 fcustomer
( a, C, ?- m& r& Scustomer-no
8 M: y+ g% p& S- b- p0 ntrust-ok
( @8 U+ t0 G6 N' N) _) \trade-record-one-len;;trade-record-one的长度
2 P+ }* O3 V, a4 q! d]6 O  u3 a; L& P9 ~6 I8 H
, K9 l- W" P/ V5 E; J5 J
;;setup procedure7 M% V6 W. O! @

0 ~4 i9 }8 G% S- Y5 n0 s/ Gto setup
# [; E$ o1 R0 w# C/ x
; o% }; ?: o4 k, I( h0 Jca

5 T9 l3 o' [# V( y& e: g9 t
" B: F; |, U, t! winitialize-settings

7 ^& c3 |! }  s; I3 x% a8 v; h2 b9 a$ F# Y3 d
crt people [setup-turtles]
$ {* j( _! {8 s
4 ?' f, [# l" l9 R. C8 M
reset-timer

+ p7 `4 y3 j0 u) P) e; z
5 }' \: B& H3 y1 z, L5 xpoll-class
8 }) Z% X) h3 j" V$ A

0 }/ k. J& K& esetup-plots
! s8 Y9 D1 h+ J% R1 l; P* a; u
; ^) @- I- U, \8 p
do-plots

( j4 v* |& U. eend
' k1 ?$ a# k. m6 l3 w# l$ m) O, [0 X% \
to initialize-settings* H- ]$ y- n7 u  n/ h9 K4 ?( W

% L- o( q9 c. q# r. Cset global-reputation-list []
' Q. k: @4 S6 h* E% p
3 U& y, J6 ?& r/ @" G) H: w) O' R
set credibility-list n-values people [0.5]
$ z7 l" t& K- D& ]7 c, F/ R) w  D9 t

( X5 ]# L; X! [& e% o- Fset honest-service 0

) b; P/ h2 L2 ~- K' x+ n9 q5 p+ k
+ Z6 e: i6 O: {7 Fset unhonest-service 0

/ p/ v0 ^: ?2 |! G% Z: m4 m6 t8 d7 d( a# r" M5 S; K8 J4 b5 I+ l3 ]
set oscillation 0

$ M4 r2 ?( s  t8 ~. {" m$ X8 R7 u9 g- v
set rand-dynamic 0

! H; ?" S3 t3 T" hend
$ q% X4 J4 ^6 z9 f5 Q" j+ ]! m8 ^' J
to setup-turtles
0 \8 o  i; l# Rset shape "person", s! z: Z) H' i3 b
setxy random-xcor random-ycor) r$ o% ~3 W: k. j/ M. d
set trade-record-one []
# S" u/ }; p! X+ A" C4 h
$ c% Q7 p, w. u: f" H; e
set trade-record-all n-values people [(list (? + 1) 0 0)]
2 P/ q5 P. c" v' P3 y5 N0 u1 K

0 a$ s% O& |+ ]set trade-record-current []
' \$ H) P6 f) b8 p9 n/ [8 Kset credibility-receive []
) ~0 O& m: ~( Vset local-reputation 0.5) E, g5 z( ~& Q8 _6 A- P7 g
set neighbor-total 0
/ d* d" r# n5 J, z5 C& L/ dset trade-times-total 0
; ]. w5 ^: ?6 w0 e! N; m5 Dset trade-money-total 00 Y! r% S9 S5 B; U7 \
set customer nobody
. u9 l4 `6 P7 B# \1 z/ D: r+ Mset credibility-all n-values people [creat-credibility]/ N7 k2 R% l4 p: r9 l9 F" @
set credibility n-values people [-1]3 B0 f  S) M* K) A" q
get-color: \1 I8 [2 O! ~0 b1 u  ]0 o! o3 S
$ O9 l, s4 n+ R: |9 u  n6 O
end
. r( ~; U1 A7 F
5 _1 D. u9 \9 g+ u0 ~1 p3 |to-report creat-credibility
1 x' _2 T: k; }report n-values people [0.5]
  e: a% t, q3 j2 Yend
4 A+ T1 C. |: D; |2 ~/ b% y9 I( |" `, w
to setup-plots
9 f* Q: n; U. h) i5 x3 T
( R% B/ X5 k8 Qset xmax 30

9 Q% Z3 Z% S' K6 K9 w$ l3 C8 w- s8 T
set ymax 1.0

0 P$ t6 D9 [+ v/ I$ y1 e: r6 g( c3 }2 Z
clear-all-plots
- t" k$ h! {8 y" ?' H2 ^: g

9 Y% Q; I) ^; Jsetup-plot1

9 [* l. C& b! b% k$ q  ?+ [/ b6 I7 s, _
setup-plot2
4 W  j" Q+ E4 V& R3 {

6 X4 \6 u8 C; O+ O% @setup-plot3

" x6 p" m# t& \) T. P- xend
) n7 A4 a& C+ U/ d6 E" ]) R) b1 F* R* J" h5 Z' D
;;run time procedures
% S1 W! R6 P  D' L! N  _; f" y& e* v* S# ]% b5 I# L( a: M5 m
to go3 i) f" r% H. F
; t  M7 F* T3 B
ask turtles [do-business]
" v  F2 k5 C  U4 l, Y# m" j
end4 u& M) @9 l' G& E# O$ k% J

* J! E/ S. }; H) Y1 i7 ~2 x7 Oto do-business 8 R. m2 N! h5 o/ b# \
2 y& B( ], i/ J6 a5 d9 R2 ~
4 u5 |! J5 Q( F' J
rt random 360

. b% M+ {5 E8 `* H: g% L& c8 P3 H5 D+ B0 x$ T
fd 1
8 g5 `# B! L+ X2 v* c" R

: W" M2 }8 }; U% O1 difelse(other turtles-here != nobody)[

& k! s# |% A) `2 ^: d9 W9 L/ e1 J" r/ @7 l' W4 J- U/ ]
set customer one-of other turtles-here

) \2 q9 Q* [% p+ J
6 \: I5 a# h/ m+ I7 d3 F;; set [customer] of customer myself

: s! e! l" V2 n
5 F% h6 i7 M7 @8 {set [trade-record-one] of self item (([who] of customer) - 1)! a+ U# p0 o2 Z5 {6 x% {& R# o& ^
[trade-record-all]of self* f0 A+ D8 n6 ^6 q
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

) t. G" J- O6 k, B4 [5 ]* z$ h2 p
2 u4 l% `) M2 `( {& [" Z! cset [trade-record-one] of customer item (([who] of self) - 1)% A6 X: A( b4 r: h# Z. H8 U
[trade-record-all]of customer

( {' V% o5 M" w$ I0 d. y2 ~% i& }
1 h# [- G9 d0 Fset [trade-record-one-len] of self length [trade-record-one] of self
" W3 T- `' g6 X( {1 t5 E
0 y' C$ d$ q. A. Y
set trade-record-current( list (timer) (random money-upper-limit))

4 q3 B7 ?$ c2 Z: {9 I6 F; {! N& K6 ?5 E; k' t
ask self [do-trust]
2 J( G1 l9 K0 T9 J! ?;;
先求ij的信任度
$ D  z( \- z" x7 }( s9 ?
8 X# n# v$ A$ l2 _/ `if ([trust-ok] of self)
" D2 j9 Q& M' @% r/ w# o;;
根据ij的信任度来决定是否与j进行交易[
  a0 _& `3 _1 |0 K! F/ }+ mask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
2 _) g& z7 a  I+ R$ y: \; N! m0 z! u- p
[
$ B- x! H4 c7 c7 {/ |. C0 B9 M+ p) c+ {

5 p; D5 p: {  m4 _7 [6 z# C3 rdo-trade
% a( v* P  }$ k  \2 _5 W

2 A* g1 Y9 q. N" Qupdate-credibility-ijl
( K. e4 E( Y+ }2 p% U

, X7 I4 Q8 y8 @; N- supdate-credibility-list
+ A1 P3 M" E& d( |- a4 J

! K" i4 y0 s! y' s$ s3 Y, p5 f- u: _- ~
update-global-reputation-list

% v" G( |- c3 _6 z* A7 Y- p) \
# K/ @! H7 n4 i$ }* d9 O( qpoll-class

8 a7 s; r% y5 c3 a9 q" o: U9 \: ]1 q) r$ B
get-color

* b) _* W$ O( K; D7 q. i- S" ?# j. d& T' {7 b- a. G
]]
3 B$ w( s: t# H- s2 b3 z5 u3 T9 N* S& G, D
;;
如果所得的信任度满足条件,则进行交易; Q% ^6 x6 s3 [! P9 A

( L  ^$ ]4 r# H8 a5 k: {[

6 C7 ?6 C! e9 f% v; x! n8 I8 o3 `0 x6 Y
rt random 360
+ ]9 y  K+ b( u; i3 J
0 S+ K8 f4 |4 y' N! X9 d& @, ?
fd 1
8 u* X8 Z& H2 y. V
; N% y2 ?/ n  K2 M$ o& X
]

& w0 c% a; e0 d  i4 L( ?' m* _8 ?  C$ s  s% G
end
! a3 n$ R7 m8 Y2 R
# y3 H& ^8 V/ l5 f: L# M
to do-trust
' ]% y3 Q7 B: kset trust-ok False
  i* C2 [" n2 D( ?9 E; R) }  ~
; m. Y) L, Y! ^! Z) p9 o
. k- ^9 K8 [/ |( N0 @) B9 H8 t' {
let max-trade-times 0
3 Z+ T/ m/ s4 u( L0 q4 p. |foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]! V9 ~2 F6 [" f; r  E  y
let max-trade-money 0
( E6 b' S$ a' k1 q* Iforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
5 s: ~- ~1 s2 }let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))  d  \( ?5 f" Q) r  |5 B$ I
" ^0 }& g8 |, ?' C9 N

1 q$ [9 L9 {2 q$ C( N$ F* c# Mget-global-proportion
7 n" @& n& p$ Q4 Q1 ?let trust-value
/ |* n: O; ?, L* k! [* q* e" Wlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

* B* }# B/ m7 y) t0 Z( b9 {2 R7 {if(trust-value > trade-trust-value); W1 l9 a# d* ], Z; i
[set trust-ok true]
/ s4 s! O4 E1 f# \- Aend
9 x9 C# |( A" M& R; ?" I# ]: a5 _
: L( v6 ?- S( n( W9 B, h8 I8 mto get-global-proportion7 a1 `$ t" A8 L5 ?( ~
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)4 i/ ]* L6 ?" f$ \/ ^0 t
[set global-proportion 0]2 ^% ^# W' b/ V$ {' }2 a
[let i 0
: N# ?/ ?6 {! s! y% X; |let sum-money 01 s- H6 A$ h/ c- |
while[ i < people]: Y& G6 @/ F$ Z* `) p* B$ u! U" i0 K
[
' F. U3 X  H! Kif( length (item i: h. t9 u% V, v2 ], D
[trade-record-all] of customer) > 3 )
4 j0 \2 e& m/ U; ~" |! l
[% e, w1 y8 E0 n1 w
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
( ~/ x; }; T+ N& U" P]
+ l2 w6 v; e2 l& w]
4 C! |6 r8 B2 `' |9 L$ U, Qlet j 0/ E1 M* @* L1 Q6 j
let note 0
" Q+ H; Q+ A/ E: n' N7 }: h- k# Twhile[ j < people]# Y3 w% ~, X! Y
[( v8 U" j9 ]3 D/ M6 b
if( length (item i- \% d/ R6 p* v6 \7 Y( R* f
[trade-record-all] of customer) > 3 )

# j( X) i  _( x6 _* f- L[! {% V- @6 p1 ^( H% Q, \) V0 M
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)# A- x7 t" W, U, W
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
  a# u3 c9 {+ t& x! L, v  S[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
- ~; W/ Z; ^+ _+ t+ E0 M4 x5 s]
9 _% j2 k5 w5 g; |- \]
  u* V! c! k1 F2 U6 \$ b0 nset global-proportion note* I4 L. X$ l1 J7 d# n
]6 \' z/ a) ]1 R# z) ]; L
end
# H3 i# O$ X8 Q# d* w3 n
6 \- V0 R9 b+ _- o: ~5 F$ G7 V- b1 P) Ito do-trade9 V- U' h  Z& f  G( n8 \
;;
这个过程实际上是给双方作出评价的过程2 G) ^. \9 C3 x7 I8 t/ ^9 c
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
- E/ k# y- x" ?set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
" s2 F8 g9 o8 [5 U" s, O5 Sset trade-record-current lput(timer) trade-record-current7 ^  K  d8 h" x$ I
;;
评价时间( T: l4 k- ^3 m0 m0 T+ n" J
ask myself [. Q0 B5 Y& }- [% R$ J
update-local-reputation
; c3 M1 J! C, u2 V) ~; ~set trade-record-current lput([local-reputation] of myself) trade-record-current
$ u: X* h6 C* q6 I]
2 A( w; U) ?. Z, ~set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself, m, u( Q) Z! G% x7 c
;;
将此次交易的记录加入到trade-record-one
  z# ~9 q8 t, H! Aset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)0 e; p( w" ?& K  F
let note (item 2 trade-record-current )4 ?$ i, q5 A, F  l' g
set trade-record-current4 |! V; R" m9 q$ c
(replace-item 2 trade-record-current (item 3 trade-record-current))
- K2 k7 q' T6 l* \, n
set trade-record-current: ^5 B; @0 V6 w3 l& a* r% W
(replace-item 3 trade-record-current note)  B, H+ b9 u$ J$ K* |
/ |+ R& g4 b& T3 r7 D
5 I, ]/ D# K* x
ask customer [1 X: y$ i6 X& W* g/ m
update-local-reputation
# [( [9 U! M/ J; R! iset trade-record-current
8 L% U0 q5 p" R4 c+ ](replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
+ M2 r( X' k1 _( [7 w
]
/ ~- }6 _* [% v+ `# B- v- W. ]# G" }8 u

7 _1 q! t( S) O1 c3 ^3 _% n9 kset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
8 c0 j2 e2 k: Q3 V+ l0 O& L6 F
, a  u: d. m, X3 q7 v0 n
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
( j8 @  |  P7 x$ T;;
将此次交易的记录加入到customertrade-record-all
3 {+ e' I- |/ E/ |/ O8 n# Cend/ g' o* H( J: ?5 b. F
; y! f/ u1 x* G$ x
to update-local-reputation0 i6 y0 X+ \' b( F; M
set [trade-record-one-len] of myself length [trade-record-one] of myself- o9 q- M2 g) Z! ?& v

7 z# ?7 [& g5 {6 |. H9 f7 H' y) w! a" U, m; \* H" z
;;if [trade-record-one-len] of myself > 3
9 y4 B$ B+ C! H; @' m
update-neighbor-total9 m9 b3 j. Y$ M8 J
;;
更新邻居节点的数目,在此进行
* w' o& u( A8 q! T$ Blet i 3! w: v# S* g  D) }8 j, I& i
let sum-time 0
" [+ J' M$ q  C& |while[i < [trade-record-one-len] of myself]. d9 \4 T  K& K; \: i
[- d1 M6 I- u) ~5 b. K' ~3 {
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )/ u4 l. X4 v0 z* Y8 _
set i
# T: h  K0 z' ], W$ }( c2 s( i + 1)
3 B  G9 h3 G1 u4 ^2 I  g+ C) E0 `
]( T2 i3 \7 _" r7 N% X& X
let j 3
* }$ e1 _( Q9 _$ ?( E8 @% r( Glet sum-money 0
2 q2 l( e1 |+ c0 x/ C1 mwhile[j < [trade-record-one-len] of myself]# g  t4 _9 i7 [8 P* o) o
[- V  N$ f: R+ c" M& E
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)' J. V  ?3 K2 ]
set j: s8 u6 v( Q; l# o
( j + 1)
3 a' q1 |+ P# k; Y1 Q) A" U! u
]$ G. u4 [% V3 ^- d* a( Y  E$ a
let k 3
( ]1 q6 N2 d. J4 ?1 y( Plet power 0; N+ c; w+ A, H8 s
let local 0
. w( U5 {# k' T* b9 l& Kwhile [k <[trade-record-one-len] of myself]( N9 _2 A0 V7 L) \9 e' @
[( e3 X6 D  r& q/ S- t
set 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)
' K+ b* L7 }+ K7 i, xset k (k + 1)
& K' _' h* o1 w: D4 q]" C  v: q5 _) [! q
set [local-reputation] of myself (local), {* u3 o8 l8 U
end' b5 e! U6 P- U* D
9 ^# H" ]/ _9 b0 t" X* ]
to update-neighbor-total
6 ^4 t+ Z! s; b% N, A$ e
7 r1 C/ F& C/ j- W' T( Hif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]/ O; U2 F' W4 ^: E1 b' I
! [9 l* ]2 ~) O) T% I

8 V# M- w3 a" Nend
2 Q# l6 M+ U6 U, G8 o$ l
& j2 F2 t6 v) nto update-credibility-ijl
7 u4 |4 w5 {9 T$ x5 t9 @4 k3 D6 C3 R/ H
;;
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。$ A  w' ^: V( ?7 N: v, X, D$ K2 P
let l 0* y9 x, d: p4 |2 y5 j
while[ l < people ]5 `$ v8 m/ z" e8 W
;;
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
  J' t9 w, s3 Z' [1 k/ J[6 J' J4 h0 e+ f  A5 ]
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)9 X* |6 j( e2 [  x6 v! o! B: E; V
if (trade-record-one-j-l-len > 3)
3 K* u" m+ ^& D% Q! g7 w. @[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-one9 s; G* ?$ o8 }  I. t% s
let i 3
# F; _( d6 h! m1 ]let sum-time 06 F$ n. z6 z% x% Q5 d$ z/ C; K$ P
while[i < trade-record-one-len]' F# M4 U# V9 B' s0 W7 p& |
[
2 V4 U6 \, _3 j4 {5 ]/ Q) ~set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
- S; e9 p. W  x# x! w& Y, T6 ?set i
4 b* u- u, |% X6 Z( i + 1)
7 p6 o8 t! o6 h8 A5 B
]
1 x9 c# L  M, F* {! ^% n: h# Elet credibility-i-j-l 08 I" C$ ?/ e8 I8 n
;;i
评价(jjl的评价)3 q9 V0 A* c5 h- k# w! r7 F
let j 3
5 j9 [# P8 O; Z8 F- v9 b; ~let k 4; x( q' x9 T" l. o& S
while[j < trade-record-one-len]- L* J/ ?5 d& \9 i. e; i0 q
[8 V1 d1 F( B- f
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉( A' h2 G% f' |+ T* p7 i
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)
" |5 E7 E3 ~$ [- o) L% Jset j
  m1 Z4 f) k" V5 d2 t; V1 ]( j + 1)
! O; ?1 p0 d9 c, [/ R" R7 n# {
]
0 n- H  t- h! n, Zset [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 ))4 ~! h3 S0 B0 F' P2 L! v

! @6 o  d! }& o5 }* Q+ _

2 w+ }# j( m, Y4 O& E$ [let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))5 J9 [( {& @3 ?7 Y: h! Q
;;
及时更新il的评价质量的评价- K% }  j# ?3 V! R
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
  i, r2 A: Y: ~+ ~) ~, ?set l (l + 1)9 {) |) k% ^& Y, [: F
]
! i% \5 y" W% Rend$ {: g& P! X7 u7 x" b
$ R8 V) _& u1 i- R" G
to update-credibility-list
! q/ ]& m  w) Q2 O  {3 U+ C0 tlet i 0
9 N/ d, v. @! H5 {while[i < people]/ }$ V! C8 H  W1 _8 s
[- x8 i: D8 n. m4 P* ?
let j 0# I  f" n! D  j5 m7 M' ^0 w5 y  H
let note 08 V7 j4 U( S) X4 \  ]
let k 0* j, N6 X, j8 H0 z7 k
;;
计作出过评价的邻居节点的数目" `1 m, `2 Q- G, X
while[j < people]
4 Z! x$ S1 a8 ?7 C) z( M! }5 v% u[
/ W8 M1 L3 f" o+ R8 H) }if (item j( [credibility] of turtle (i + 1)) != -1)4 p1 G1 J" S0 [( ?
;;
判断是否给本turtle的评价质量做出过评价的节点
  S1 k6 p* y3 j, k[set note (note + item j ([credibility]of turtle (i + 1)))
2 z2 l: U: G' ?; [, o;;*(exp (-(people - 2)))/(people - 2))]

2 [7 Z# l. w! s, aset k (k + 1)
: E. e# C  \/ ]/ @# ~  k# K4 {( _]2 z6 W1 `  G, [, S/ @% j. F
set j (j + 1)* O8 R4 o9 Z# o; _5 ~
]
$ t9 u1 y( q" _+ N5 Qset note (note *(exp (- (1 / k)))/ k)# Q# m8 |" \$ S% q8 x
set credibility-list (replace-item i credibility-list note)
5 y6 S: V4 Y% p$ f7 i6 q3 f6 A  ?set i (i + 1)% S* [( b1 m+ B" r$ |
]
2 Z: E/ p! p, W  T6 f4 bend
3 N4 e* I  l8 }' C
+ a0 F, R# b! k  z; C- E1 \to update-global-reputation-list
# h5 N6 B1 I; l" nlet j 0- o( G' g5 [$ W+ c4 j
while[j < people]
$ M7 U% m" l/ E7 o0 M- b[
! {: \4 K) v* O0 h* nlet new 0$ I: O7 d& j' z- V* G1 w
;;
暂存新的一个全局声誉
' M, L' O( x9 u0 `let i 0; b# w: u6 J' `& r+ _' F
let sum-money 0
; A$ K7 k( O* f$ T& d7 Klet credibility-money 0
8 d; |+ F- H- i6 R5 @/ nwhile [i < people]# _! X! }/ _5 _) ]$ J
[
/ Q% i, q7 V9 ]* N  b+ C  m4 Oset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
2 w6 M: t8 o6 T+ e* S2 mset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)). t4 {# I  F# k  a  V2 U5 E" K
set i (i + 1)
* n1 O2 O! g8 x  s  O]8 N- T' z5 d( \
let k 0# S5 T: [9 z, B1 d( R
let new1 0$ B7 k5 F, s$ y2 V; `+ Z
while [k < people]% j8 n9 o7 h* ?* @8 N; v! }9 g
[5 J, t3 y" y" ]$ N% c1 g. O
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)) v6 {; R1 o, @* V: E% m% `
set k (k + 1)) \) a6 _" B+ N6 L
]
& F7 ~$ c) o1 |set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 5 ^/ `, v7 Y4 i7 m8 j3 s
set global-reputation-list (replace-item j global-reputation-list new)7 A; t& m. L+ g* {
set j (j + 1)
& P/ Y& E9 V3 ?]
* {% V- C. U% l8 q1 n5 y1 }end
! S/ Y. [3 e/ I, E5 V, K8 a7 P
6 L- ^% C9 O3 M0 q  W- a7 H3 h4 }! X, h9 ]+ `
5 i; O7 l" o. _( q( {& L( j
to get-color) T7 G) T4 \4 {
, k3 D; g) a$ _6 q5 i4 g* k
set color blue
1 x2 x' U. t- `0 V0 z, G
end
  M0 F; Y$ ~0 y; j; B9 m6 v
4 z% F* A) J" b: W. i. r" Wto poll-class4 o6 K7 D' p0 r0 r. M
end
1 m' V, m% @* ]+ r0 h0 L
) _/ d! r2 |3 Fto setup-plot1
$ X7 p; I4 v9 V0 K
* w/ S0 ?. a1 @8 V$ M7 sset-current-plot "Trends-of-Local-reputation"
1 ~& p3 V' M# I  Q5 {- T3 q

1 p5 v5 u) M! rset-plot-x-range 0 xmax
: j  ^8 m" G- N/ I9 ?+ o

7 z9 F! s) h) c  ~! ?set-plot-y-range 0.0 ymax
7 P' ~) I  I! p; i& W
end  C. _% s0 q: `/ d7 g) e$ N" U6 ^, y
4 n+ f- o9 O) z
to setup-plot2& [1 o: I$ I/ t* W+ o6 s2 o
" x, ?  e, c- l6 l& S4 e
set-current-plot "Trends-of-global-reputation"

7 Q$ I- O" x( z; {+ b( z; v! J7 @: Q, T
set-plot-x-range 0 xmax

) X$ A. }; b. h1 u1 C5 c/ T4 t3 q1 w% h4 x" j/ K! u, y
set-plot-y-range 0.0 ymax
1 j2 f. Z" B; b" H) Y4 H4 s2 `
end
8 G2 Z  G+ Q6 ]! T
3 B& T4 z" p3 N( I8 s* R' e; Qto setup-plot3
6 B' o5 l5 ]# f* T0 A" Z6 h& E/ E$ d& ?
set-current-plot "Trends-of-credibility"
& {; g6 L5 q. s$ w! p
" b9 y& ~: a1 p1 D+ q) x5 B  J. U( S( x
set-plot-x-range 0 xmax

4 V; Z/ p1 u. c  p) v5 z
4 i, g; S  {; W  I: yset-plot-y-range 0.0 ymax
) J8 a3 U: h$ H8 d" [2 @
end$ L- h8 P6 Q# J, r7 G
3 J- v1 _  B5 |2 m, k4 M; w7 e! ^
to do-plots
6 A; i9 W9 E$ [0 _  \set-current-plot "Trends-of-Local-reputation"
% d( H8 A8 F1 L1 t" z2 kset-current-plot-pen "Honest service"
$ c6 B. `! j8 ]+ P9 [/ u9 ?9 yend6 f" m$ N# [4 L. {7 X1 n6 P% E

% @$ |% x) ]- D9 @[ 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.4 q* g7 H% _! i/ h& b/ t3 b

1 i. M" Y+ q0 f# _* `! t4 C6 r4 h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, 2026-8-15 12:59 , Processed in 0.018438 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