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: 15010|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:& b3 @8 G& I- T/ l' C
to do-business 8 F2 W( a2 ^& `  h/ r. v) V! K
rt random 360
: Y+ F0 a  o- e8 w7 Q, f& c" @" ~ fd 1/ K3 x& j, [2 r2 V4 y6 W! h6 }
ifelse(other turtles-here != nobody)[
7 @+ C4 V8 F5 S4 _! R& t   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.  t/ T# A6 Z4 J
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    # g1 n7 h7 z% u4 C# _7 n
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 e* g6 ]) \) L& b: p
   set [trade-record-one-len] of self length [trade-record-one] of self
- b9 G9 d" |7 w7 j   set trade-record-current( list (timer) (random money-upper-limit))
" U* }0 ]  j9 D/ n7 z: n: `! Q, ]# ^' r  U
问题的提示如下:
$ _) D3 \* A" ^+ F% s5 V- Y# G+ t1 D! O2 _
error while turtle 50 running OF in procedure DO-BUSINESS  Q* k! U; }4 ~
  called by procedure GO7 v( D, |! u- l+ q
OF expected input to be a turtle agentset or turtle but got NOBODY instead., r) G. a4 Z& m+ p% T! y4 s
(halted running of go)
' ], Z) e! ?, @6 e% Z9 u# r  W/ V: I; o0 k/ d2 l
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~~
" I) D- O; X! z4 j/ r+ L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
/ d7 y- `: H2 g' j4 ]1 O3 _+ Tglobals[
4 s. j7 O2 ?& v/ l0 a3 q% Uxmax
% G, T6 L, j5 C5 Qymax
6 [# R, d: n7 J$ T% i4 a' ~global-reputation-list9 D- d: q( f" L

# T" o/ G: m, X;;
每一个turtle的全局声誉都存在此LIST
& `8 `& {: J4 c7 bcredibility-list
& |) b5 g* m6 L. ]% j1 z. y;;
每一个turtle的评价可信度
. k% y& w) g! K" w: d* [honest-service2 N- Y3 d5 Z6 I. y7 q+ V( ]7 n4 R9 `
unhonest-service
% }& @  c* D1 i* q! Q3 yoscillation( K; z/ q) a/ O; E- `
rand-dynamic
+ ]$ I4 P/ O0 E2 n1 k]
9 A/ h9 l7 e/ o+ A* U+ P
! q$ j( A, Y9 T& }turtles-own[" L8 M3 D9 O" Z( O" A
trade-record-all
- R8 e9 L6 f& a5 H! Q7 _;;a list of lists,
trade-record-one组成5 F  p1 R/ i3 K+ b' Q5 p
trade-record-one* M+ w. b9 i7 S1 K
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
2 {2 k. M$ z& T. D7 L# R, i0 O/ ]5 S4 I- p, H3 _5 u
;;[
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]]
: w$ P; Q' R3 }$ Ltrade-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 w8 n( e; @/ Lcredibility-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( t7 t! d3 Tneighbor-total
$ k! |0 m% y' V4 i# h' F;;
记录该turtle的邻居节点的数目: E' u8 H4 m. ^0 e8 Z$ Z" O
trade-time, @" t& p" {* \) w
;;
当前发生交易的turtle的交易时间
( |9 }& U% x: l# u, Z% uappraise-give
" Z5 `  a% d2 K. M, M;;
当前发生交易时给出的评价
, t: g9 p$ m' `' s: Qappraise-receive6 v- O- I3 i1 q3 `' t* _! K
;;
当前发生交易时收到的评价3 {5 q% H0 c5 _. t$ h0 _; h( C
appraise-time
  s+ W0 M" ^# {, q. o. W: w0 Z- v;;
当前发生交易时的评价时间
* \2 y1 O3 P1 w# i' [/ v* Llocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
6 [6 K# x- f6 ^/ \) r! vtrade-times-total+ {( j5 R/ I$ \& k
;;
与当前turtle的交易总次数
6 M; z  b" h2 U9 O6 V1 c+ {" P, @trade-money-total, p! O" _: @6 G  O  P- n* B) E
;;
与当前turtle的交易总金额( G+ }( x; ^" b" P" ^: u
local-reputation  P6 u+ \5 R' _9 @7 W
global-reputation
" P2 A8 y) B2 }- tcredibility
7 j& s) z1 r$ f;;
评价可信度,每次交易后都需要更新
$ [9 N+ w3 y0 Y1 N8 D, Ccredibility-all
3 z' `" W4 ^7 a% \6 C% `;;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
* z  n/ n, C) Z4 y+ J+ @  C  }; 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
6 U5 \5 Z% A9 G  B! H3 w: T! Rcredibility-one
! @* p4 I3 v# _# S" G;;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
5 j4 y; v) d! C/ |  J' Lglobal-proportion
5 A. K1 n- ?2 A0 Zcustomer
: P" C5 m# V" U! ]) J! Z% acustomer-no' h4 E: v% d& N7 K2 B+ I
trust-ok
) q8 n- Q& o+ p0 G( S$ Gtrade-record-one-len;;trade-record-one的长度
6 V" B& X& m) U% }9 s]5 U4 W. C  x& W( R" T  H# B$ [& h

" T8 X$ _- Y. d' N;;setup procedure- c2 x  @! q0 z+ u
& i3 |' G  K/ k4 I0 `# B! A
to setup( m' k% t. a3 |; d1 r

* {4 G: e( Z3 Z7 r% Mca
! J7 T& c$ |  A& i
8 V- I% p9 p6 T5 S2 N# |
initialize-settings

8 i# [% P7 A* y) v1 ?1 M+ ~% m1 p" U
crt people [setup-turtles]

3 B  h6 `7 q' b; Q7 S2 i6 |& {) x  Z5 b
reset-timer
4 V# t5 X+ Z$ |  f4 Q# |3 t
3 _7 Y& W* S6 x" u9 D
poll-class
2 B# A# f; G6 G$ {
- ?- ~9 l; U& ^7 K. C
setup-plots

9 b5 R9 R. s$ d5 u" q4 O9 [
6 A1 w" H# U2 Z2 l0 {5 Sdo-plots
$ ^5 d2 e$ j  l
end
- R9 e8 g9 z! S+ B, `, }6 N; |7 m  c) D1 S  Y' o
to initialize-settings
2 O1 u" Q5 A& q' s# [' c
  D1 y& r1 I% x. W# l3 b8 Fset global-reputation-list []
+ v" L) p. x$ p3 E8 V) S

, F, V" _+ F( G% M& h5 Iset credibility-list n-values people [0.5]
% P: K% d+ p! A" J' v& G
  T9 @* _! w% L
set honest-service 0
+ u6 G7 D  `! ~; O# e+ f. B) |3 @1 {

1 b$ J/ t6 ~" l  j$ wset unhonest-service 0

3 x" ^9 }8 J" A  `
# A4 \$ f5 p5 }1 W: x7 w0 i8 Aset oscillation 0
  I* ~1 R7 y+ h" m+ ]( G! n
# X* I5 k: f4 V) X5 @! Y8 N
set rand-dynamic 0
5 C, L, D6 n1 ]! ]# W3 [
end3 x* P% p7 l  w6 T9 F
+ o' y! @7 _2 P8 [
to setup-turtles * K. M3 P9 l6 {% a% u
set shape "person") E7 h. Q, J! v0 @; Y
setxy random-xcor random-ycor
# X+ J2 o. u3 t4 ~* K4 Zset trade-record-one []  D+ p) c9 `9 I
; S! M' _5 `9 U& s5 j. v
set trade-record-all n-values people [(list (? + 1) 0 0)] 0 ~: m+ S+ l$ ^$ X* D! Z

+ U1 z2 o! u3 ~& x3 t& g7 V" t7 ?( I/ lset trade-record-current []
% Q' ]' l' |3 D* L4 z5 V0 kset credibility-receive []
7 p% y7 }) r; b, `% k0 u6 d' V/ Cset local-reputation 0.5; g! k8 c  J- v) V( {9 {
set neighbor-total 00 ]/ K0 [# H* Y' Q* u$ y
set trade-times-total 04 n; |* k, D5 I* ^0 \/ o
set trade-money-total 0( g* W" L: y, ~0 e0 n. f
set customer nobody1 R" L* T' U* _3 T, y$ Y
set credibility-all n-values people [creat-credibility]* V1 L0 o- q4 }+ t! m$ C
set credibility n-values people [-1]7 F; Q2 M; j6 F$ k$ N
get-color- |5 n) |1 Y1 x  N
8 n9 u2 [& K" J  @! X
end
4 K4 J9 i9 [; G3 s+ h: q) h  @
6 _5 k3 R' f  h& dto-report creat-credibility1 M- k7 M/ [8 }
report n-values people [0.5]/ C# D" [$ f) k9 {& W4 \
end
0 ?; `' c# c6 ?3 O
0 G, P' k$ k% n7 v+ pto setup-plots+ E# C8 w8 i# V- I

1 R) J, @; b" pset xmax 30

8 e/ @1 s5 C+ p9 _9 G
1 @7 u0 J4 G: m6 A+ ~set ymax 1.0

, V/ i( _' |/ g$ S8 z
8 w8 @  J3 ?/ s6 y9 zclear-all-plots
. T; _8 W& K* c$ m6 w, _

+ Q& B2 G6 H" Msetup-plot1

; r# h( R$ x% u8 M+ w) u
2 _: i: e0 v) D4 g& n: q2 K4 ^5 \8 Esetup-plot2

* M" v6 J" }4 y7 x/ \. Q9 {+ h/ Q" |* \- y, X# p3 G+ J
setup-plot3

7 V, ~4 x0 b8 W! l. f3 i& Hend
1 o. J9 i- X( Q# T% |* i/ f: }: _' v! C. [3 |
;;run time procedures
1 b0 y& z$ Z) I$ s" }9 W% L
$ B" e  c* z6 d" d& t# jto go/ B$ I1 V* M, w9 {

  H; S; U' e! A7 c" @' k4 rask turtles [do-business]
4 A1 t. w" E; m6 E) V$ [
end
1 [& n6 c. ~1 C/ @! O, U2 B2 E* y! k% r
to do-business 0 @' ]6 `" P& a( J% o- T
2 Z& m' A( b5 j% Z; o
, H% P) h9 Q% f
rt random 360

1 h, k3 l& }5 ^* l
$ r) N  \9 z% l6 kfd 1
: }$ k' `% p9 r+ S0 X

' h/ n2 ]+ Y8 [# v/ ?5 r; yifelse(other turtles-here != nobody)[

: _. l' Q  K/ S6 @  z+ M: f% m; t: f- V# k( }5 g
set customer one-of other turtles-here
8 [2 n! `6 w" C3 @6 A7 y' C
9 M! M3 c$ K9 k
;; set [customer] of customer myself
4 Z6 Y6 R% V, [
# R/ ]; C$ S) ?
set [trade-record-one] of self item (([who] of customer) - 1)
' K; c5 a+ d, E3 p[trade-record-all]of self
" s  a$ g* q. u. a; W;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

+ r' m. Y3 f2 m7 n4 ~+ v( \& v) p# u& W* L/ m
set [trade-record-one] of customer item (([who] of self) - 1)' R" L. ~$ |) S9 o" G8 v5 p
[trade-record-all]of customer

& f  T# l3 V! f1 h2 r6 p0 ?  @, a0 t) \0 H$ b
set [trade-record-one-len] of self length [trade-record-one] of self

) J' |* U. {4 g1 x2 }0 G$ @7 [: L
( j/ b1 g! ^' N: q  m) Lset trade-record-current( list (timer) (random money-upper-limit))
0 b& K/ E2 a3 m2 A3 k
3 L, a' u. [0 z; ?9 Y4 @
ask self [do-trust]
: A- g7 ]3 m! Z! S) o;;
先求ij的信任度& c4 M* {! P. P7 z9 x; D8 V

# \1 u' X8 Y7 n6 c" q9 ^  L: e- ~" \( eif ([trust-ok] of self)% j% Z; Y9 |& C
;;
根据ij的信任度来决定是否与j进行交易[
# Q& X+ @* _" T- I: K  ]2 A0 d* Sask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
; F8 D- }; t: R8 P  a% u1 |  _& X! ?6 O- W, y* q2 y1 H
[
) X: i# W: O* l

' ^/ j+ [$ w/ t& W; \do-trade
6 A7 v& j" P  B& I# ]$ h, A

! F; r4 u* @" V2 Xupdate-credibility-ijl
9 d! T- g7 Z! ]! O/ X5 E

+ P3 u& R$ G7 L) r( Z* I4 [2 rupdate-credibility-list
0 V. a5 O9 b0 }0 Q  g/ @
2 V  R7 I, E4 j& q. @/ K* A6 o0 J
$ k! q, b7 s5 T, d. l' i+ K1 c/ @
update-global-reputation-list
) V% I4 S$ X" \$ i+ c3 Q- n
5 F, N" w$ P3 D+ k: Q( h* ]
poll-class
& I% Q9 J$ j* R2 g  Z
+ m4 m- e/ x1 Z( F9 V
get-color

5 w5 G# |8 \/ \/ B) S
; ~& g3 S4 A9 {) ~0 [& o5 A2 X& D]]: r* M7 I2 P/ k2 `

6 W# H5 E1 O5 t+ w  ];;
如果所得的信任度满足条件,则进行交易
) @- d8 F; A7 Y3 T1 U8 @7 j
) G+ N. s: R/ N7 L8 l9 E[

9 `/ V1 f7 A- Y7 [6 D$ b' v
) h1 [! c/ J9 D' m) srt random 360
: o8 g0 a8 e5 j! a. E% r
0 \2 O% K; U8 n& v8 p. p: t, B- _
fd 1
/ _; o* t. |, U5 c0 ~* I
! Y7 J( B& L& G4 w- Y5 i
]
# O/ k* U! z" s: [2 y( d9 p* A
( A; Z, o- `6 h5 J
end
3 F; Q" q7 c& n0 @

5 T1 ?6 r, Q; j4 y, }0 Uto do-trust . y/ P  y2 x  F# K' d
set trust-ok False6 r, a! S2 C6 D4 }

2 ]  b2 L! ]$ r

) `% M4 B5 x* D, Mlet max-trade-times 0- r2 L. b. u" f4 B
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]" R: u2 V; _# C
let max-trade-money 0: {" z0 E, W5 M6 k
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]5 c; ~# a  [- l2 m% I
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))6 O( r8 {4 g5 ~- i/ N0 J9 r
9 e' \8 @, j+ u6 G/ L
- o9 X, t+ ?" Z0 @: [% m6 U! d
get-global-proportion
. R( G4 t! t$ E* Y/ Xlet trust-value0 R; g) t, w" l% v( Q* I
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)

" ^) [8 S* ~9 Rif(trust-value > trade-trust-value); \7 ?2 v+ i+ o4 Q- B
[set trust-ok true]* p, M+ Y; W6 s3 E) d( b
end
7 T0 w! Y0 K3 h' ~+ ]5 _  ^/ Q3 x  A7 _2 {6 ^9 U
to get-global-proportion
; l  M+ A# v4 ~5 ~: Vifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
- X- X1 c5 Z4 }[set global-proportion 0]* F. m0 d- N- T8 q. w* ?
[let i 0
: [5 i* E! U) J+ ]; w# |# Zlet sum-money 03 Z7 o4 X  ^8 C: x
while[ i < people]
. t) S: |  ^8 K) h+ P8 }) x- ^[. j0 G. L: t/ f# A) C
if( length (item i; L$ w) s* }2 y4 m. o
[trade-record-all] of customer) > 3 )

4 Z* u  y- _* y1 y+ N[% E0 ~5 Y: V0 y0 b5 g2 z
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
( }" n% Q: e8 {8 K8 I9 P]
; ~) c& E0 W1 H/ r( }3 P]
; E( h! D- e! K& f; H: G- P4 Ulet j 0
# h% |* _3 K6 Olet note 0* ], O. x( p& M& ^* s
while[ j < people]
' g6 P# k& [, _7 J2 W5 n5 x: x[
6 C. `2 H- r7 d: D1 fif( length (item i' e* m6 j( t8 Z  S& J& {5 q' e% u
[trade-record-all] of customer) > 3 )

& {8 h+ R! Z$ C[
- U# M" ]3 _0 C* L$ I- v2 `ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
& k) s6 p$ q' W- r$ c/ @[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
' w8 q/ S6 W! U; O[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]/ {5 ]2 _3 F# T4 x9 ~9 y, Z, s
]1 o- y  a, `4 {* o# X8 Q0 i0 w
]7 d/ i, [6 B  F& M
set global-proportion note) V8 Z8 F( F& F" C& j# c- ^) }
]
( I/ H3 \# U( [! oend- U4 Q( n2 z7 y# E* O
% J  ?+ F! U# j0 V3 h
to do-trade3 ?3 o! [, [7 }. a4 s8 u; d
;;
这个过程实际上是给双方作出评价的过程* D9 d: t  s! |8 X2 L, m
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价" _2 y/ @& U: G' I5 D/ B- Z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
6 g* V7 b) ~- E; Z- a0 cset trade-record-current lput(timer) trade-record-current
8 w, ]+ {9 L: Z2 F+ j) l0 P8 K;;
评价时间
+ a- H" k; {1 J. f2 }3 ]- fask myself [
: H# L8 l  ~/ y8 ]% H6 y) `+ |update-local-reputation. b" C. N4 a' ^
set trade-record-current lput([local-reputation] of myself) trade-record-current1 I: O% Z- ^6 h. z
]
( Z0 v' j6 \% f  Yset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself7 t) S! r* K2 D" `" R
;;
将此次交易的记录加入到trade-record-one! }: b: D$ w" N2 O% m
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
& |* ~, ?5 k+ S1 Llet note (item 2 trade-record-current )
9 n' h3 E" d+ n$ N+ F% \* d" z5 Dset trade-record-current
7 V; X5 m1 z% I% ~0 ?1 ~. L2 M(replace-item 2 trade-record-current (item 3 trade-record-current))

% H. v6 \. p! Dset trade-record-current: i5 o/ g6 t8 U
(replace-item 3 trade-record-current note): p! {0 r2 _$ a' d0 Y7 i: w
1 {  H* m) m; t: Y! C
( d7 V' [% D0 D" x- d8 G7 ?" }& D! k
ask customer [; T; b& G! k" t. H5 q. r( x( a
update-local-reputation
4 q# Z/ c+ y3 [set trade-record-current
- A0 ~* Y4 H. F  ]. q(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

  U3 ~: U) s5 y4 N, K]
8 }/ _" ?% G* x* ]2 S- Z, M2 `5 q1 `1 x+ |8 U- n
5 q. a8 W7 i0 s7 `4 A; h
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
) q8 L1 c1 e( T: e) N

( B! @8 B8 L( t, T' i( lset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
+ _7 Z  X) I, O' L% G/ f;;
将此次交易的记录加入到customertrade-record-all
. P- s$ O* F& L$ @0 K) X- Aend$ Q' E: m3 o( g4 p0 S

# V' N% j# q3 d1 @8 s0 O& Gto update-local-reputation
# a, f; f5 A7 u" ]7 c' H% |' dset [trade-record-one-len] of myself length [trade-record-one] of myself2 d8 e( m/ F- d
  W5 k% {7 }1 F8 Z

& H" R3 D9 m8 x. q6 a;;if [trade-record-one-len] of myself > 3
! J, H* T7 D6 d
update-neighbor-total
$ d, H* P& p. H7 n: N" `;;
更新邻居节点的数目,在此进行
) S; Q" C8 u" I" R  G; Ilet i 3' V! H, g) _; `& i9 @9 m
let sum-time 0
# w9 q' y1 ]; U! i5 Vwhile[i < [trade-record-one-len] of myself]; _" f4 M5 ^, i3 S
[
2 m1 @3 y7 h& M' ?; d6 w: lset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )- F6 E. Z3 P# m: v( R
set i4 T5 ]/ y3 W4 d7 }
( i + 1)
" \# Q3 J- N& S+ o8 i/ G) f
]: h' N% G9 U6 I
let j 3
$ B! B* ^* B( jlet sum-money 0; p9 J9 ^2 K7 P9 U
while[j < [trade-record-one-len] of myself]
( n6 P) M1 G# F[
; ~2 f: Q6 J& U: a, t5 gset 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+ ^  [9 a+ F; c9 r3 D# x4 p
set j9 N7 Y  |' X; Q' o3 R* Q8 g% F
( j + 1)

0 F: ]% o  e" t/ d' |8 W! P]
/ [5 a; i/ i& T5 _/ |8 u2 Dlet k 3
4 J3 u3 K( Q1 p' w$ M. Vlet power 0
) g, z- }2 ]1 B9 llet local 0
+ s' i, g/ p4 s' b* L0 v% ~8 Cwhile [k <[trade-record-one-len] of myself]
' s. r. W4 D% _6 |, ~[( m8 y) ^/ @) o
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) 0 F; _; ?" A5 C
set k (k + 1)
$ X! X7 w6 ?1 v3 Z7 ^]+ k; u6 c; [$ t. A2 d0 t
set [local-reputation] of myself (local)( H, ?1 }5 a$ D7 ]. E, x
end" V4 F( O4 |$ E* `, Z
% a8 j" a7 F4 V' l
to update-neighbor-total
1 q3 S8 t7 V( i4 W
: `# i+ Y! d, }# _if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]  ~+ l( w7 @1 R' p  }+ Q. L
" S3 k9 r" l. c4 |
5 m: z" Y1 l) G, l
end
' q. _1 y! x: l0 i' d7 e
1 C; E! Z& _& l2 Cto update-credibility-ijl
9 u- M9 A, w# F. x2 F1 D) Y3 h4 D' P
# L! m* G9 o7 N* k* Y$ T;;
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。: q9 P3 F4 a' c* |+ x
let l 08 \0 X2 r+ S/ X# Y1 [9 T. \
while[ l < people ]3 S5 l$ e& z6 a; g
;;
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) I$ V; ^. U4 M4 j* k) I
[+ R" L# E4 H( _$ x: Q
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)% d6 p1 T, C, L
if (trade-record-one-j-l-len > 3), h- v# D6 g. w$ p6 b6 i, m
[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# n) [" q* s, l4 W
let i 3
% p# n7 d$ T$ p$ V( Slet sum-time 0
4 X4 m, v" w. K6 d4 ]. twhile[i < trade-record-one-len]# {; w- d/ _' {/ _' c% z
[
4 T% m$ o2 o! u+ b7 Yset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )0 H) C6 }  F& m! \
set i4 P1 {. g1 T3 D# o) I
( i + 1)
. a- p# h* h9 P9 f- I; \5 s
]
6 P9 C+ W( h- C* f8 H+ j! U, Xlet credibility-i-j-l 0
. }: ]; r: \7 r' _& }) `;;i
评价(jjl的评价)* y. c1 u# k8 v0 `, ^6 p' C/ ]
let j 30 Q; w% Z9 _( K1 X7 E
let k 4' ^5 W7 z( q6 ^( _5 q6 l, S
while[j < trade-record-one-len]' l8 Z/ u1 b2 Q0 d) Y
[
2 E' a7 r) U  F* O& D7 }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
% D! E5 V8 R' C+ v) Uset 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)
' T. k9 ^& l8 V# N8 mset j, d3 d1 e5 j9 N+ B+ n) P; V  w5 ?* V
( j + 1)
* l: D% D2 `, t: Q" S5 m. a
]* q7 Z, q* G4 D* \8 l6 a1 L
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 ))% f  q7 o4 E: g, _+ I6 A
0 G+ Y; T+ Y/ D. M/ T

; K0 t: Y, Z. zlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))' R7 c* W. q0 X$ R9 K5 D$ l, @
;;
及时更新il的评价质量的评价
- x5 A) S; o. k/ I4 A: c% o3 ]" hset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
, K' b5 ~* {# q  g" qset l (l + 1)
1 c3 F; Y" m$ D; X$ m# a, t: {3 `]
* n! O% b/ J3 f1 R) Wend
- y7 |. P5 t$ G8 e9 ~+ j0 i2 J8 Q6 D4 u* |
to update-credibility-list# ~+ j1 F4 m5 j9 [2 `1 V* ~8 M
let i 0  ~! P* Q3 W% u) A. {. {
while[i < people]
6 J# I. n# g4 |9 j. n7 V; ^[
* K7 ?# t. G) H8 k( i# slet j 03 K, n6 B/ _6 s- V
let note 0: v2 y" ?# X: S( g4 \
let k 0, U  ]$ Z* X/ O% d9 Q& ]' X
;;
计作出过评价的邻居节点的数目3 o# R- `( O4 @
while[j < people]4 p# _% d$ h" A* Y# L5 @% H
[( _4 x/ e0 r9 k; e6 m' ?
if (item j( [credibility] of turtle (i + 1)) != -1)! I# f! Z7 X, G* G
;;
判断是否给本turtle的评价质量做出过评价的节点
( C  t: |0 S  S. P[set note (note + item j ([credibility]of turtle (i + 1)))
' o, f# ]# w, z6 s  ];;*(exp (-(people - 2)))/(people - 2))]

3 r" b1 t  t+ `, t1 ?! Pset k (k + 1)
& U9 e5 S" k6 D4 @* m]
9 \  ]/ b. b/ x1 Z2 Vset j (j + 1)9 e! b; c! g( u) o( x$ a
]
2 E2 L. I/ a+ dset note (note *(exp (- (1 / k)))/ k)
1 E' C( R, _4 X# h- p) F5 l' c+ j6 gset credibility-list (replace-item i credibility-list note)" R7 a7 N* V  A
set i (i + 1)
6 f; J$ b) K4 P6 Y% n% W]
$ l2 v0 k$ `+ R# h& x9 Tend
+ y; ^$ K$ S3 L! H  \0 @5 t3 @# L
: @1 k2 x6 s$ ~' W# ^to update-global-reputation-list* S- n# g+ n8 H8 R" R% x: R; C
let j 0( F2 h% n/ e5 F5 a7 @  O
while[j < people]7 ?. L4 r+ h5 {  m' g
[5 \1 X6 A( a. O. J3 b6 V
let new 0
* x& ?  p* v* A" N; p. D;;
暂存新的一个全局声誉$ ~/ L0 {) a1 G) }
let i 0) Y8 X% G5 D0 o, ?6 w" p) F2 b
let sum-money 0' a% B2 ~' C: H# U5 o; J# Y3 Q
let credibility-money 02 k  }0 T8 @+ s. ^/ x6 Q/ `
while [i < people]
* j% J4 o2 O# ^. M[: |& v4 D  C6 g3 D! d8 u( w, F
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))+ Z4 }$ b8 y2 f  l
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)). u% X/ j7 g: K* O' E, C4 M6 o! {
set i (i + 1)
, G* a) Q( M5 y2 N+ _+ ^9 V]
& [" Y, O/ c7 Tlet k 0
. s2 }7 ]6 i7 d' ~8 d) elet new1 05 r4 ~: o6 z3 t9 H- V/ E
while [k < people]/ n; Z- V: V# N* I/ K
[5 E6 ]1 m2 e1 m3 L2 D: h, x  S& w
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): u2 x  m0 W, \+ [. y
set k (k + 1)
! T' m5 J( r" c" S! {6 x- i]
( b; U, a5 }# T, I7 cset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) : x# @7 g- y6 {
set global-reputation-list (replace-item j global-reputation-list new)
5 J6 x* g: q3 h) nset j (j + 1)
, w* m' J4 h" ~6 }( S6 N: H]
+ t- u- F/ u3 _2 Nend* D, I/ E" s$ s# s4 N0 u

" q  y8 `, T9 y2 L" s, c" o+ x( Q
  [' i5 r- N" c+ u( V& e* C
to get-color
$ W$ {+ F8 L3 c. [
. L. D4 ^' x6 c3 v0 X# {$ ?3 r- fset color blue
0 c4 b9 s8 M& h7 A: I/ q5 l
end
- ]! }: a1 ^: `' [+ I/ l" m# a9 W! H# n. T& Q1 u% z8 Y3 I8 N
to poll-class% Q% ^5 K2 f/ G: F2 z
end  l1 n3 ^% W0 @* }8 Y( }" O, z! v
; K$ e6 h5 r, [2 `0 h
to setup-plot1& C, o0 f1 H% d; y7 g- A
: s3 v- Z. N8 {' C9 P" b% L. N: i
set-current-plot "Trends-of-Local-reputation"

+ l, B5 V" p% F7 M6 K* {  R5 i4 c- _
set-plot-x-range 0 xmax

$ h$ p- b9 h( S8 @  b+ v  S5 T/ k
  _6 G9 L8 [2 tset-plot-y-range 0.0 ymax
, u. t/ H+ Y8 u, n* p% }! Y$ Y
end
% ]  d" ?; s0 U/ M' y* _5 e8 e9 E: d) b9 m" B/ f1 K
to setup-plot2
) ]- t% W) S* {: Q
! W" v7 }( s: u2 g+ e+ yset-current-plot "Trends-of-global-reputation"

7 u/ M0 Y- X( V; k
% \6 m7 l* d$ J! [5 Z5 ^set-plot-x-range 0 xmax
$ Z7 ?/ Q. A9 @7 s; A0 k

* o9 u( l' d/ F; m9 f$ Gset-plot-y-range 0.0 ymax

3 P0 I5 u% e  P: H$ send
; \- q1 f7 w" h& p
. G7 Q$ a( N" z4 q- C2 Bto setup-plot39 w1 }) b) N$ L
( d6 I  Q, P: B, A
set-current-plot "Trends-of-credibility"
( D$ u1 c  I2 t* }$ t, y! Q

7 P8 D4 G# o6 `6 [* D+ Eset-plot-x-range 0 xmax

! C2 z2 ^7 |: P# \' I
. @$ p+ _0 ?& Z6 s" J# eset-plot-y-range 0.0 ymax

9 T+ h$ ^: o& l8 z+ oend
1 ]3 P2 p3 k6 C7 ~7 T% @/ B5 q' [4 f7 |
to do-plots
7 f1 n2 B0 E) Oset-current-plot "Trends-of-Local-reputation"( A. F5 p& A8 Z& j
set-current-plot-pen "Honest service"% h/ h; Z% w: D) Z: Z/ Q0 b6 v
end6 k0 i2 p& a# Z4 O' |+ s8 Y- h
' W3 T+ F, ?/ r
[ 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.
( E! a: Y, ~3 J5 K; e! c- b. E5 s: s; w! t. X
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, 2026-5-28 16:38 , Processed in 0.024863 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