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: 11222|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:9 b9 s+ i' m7 |: h! D( A' D
to do-business
% |# N* Q, ]5 H4 d# A6 _) Q; M rt random 3608 w9 Q5 v3 M) d) K% A& X: C& L
fd 1
7 Q& t( W7 K, y: f- B ifelse(other turtles-here != nobody)[
- E) m4 Y2 [6 I! k0 }0 _   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.
+ z7 ~1 R1 ]* a  j/ O# i& l   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    . o7 i' ?, u  A9 Z
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
6 A: D) s" D6 E2 X9 B5 [% i; I   set [trade-record-one-len] of self length [trade-record-one] of self
1 i& L- h' c& S: [" Y3 P* M   set trade-record-current( list (timer) (random money-upper-limit))5 a7 w/ _5 }7 R/ r1 T4 V7 R' e

5 }, n7 p, K  e7 e/ g. {问题的提示如下:4 i. L5 E  y: \- Z3 N

4 A) n. p2 E; x- ?. i" Zerror while turtle 50 running OF in procedure DO-BUSINESS
1 @3 f; x& `4 ~0 T, L  called by procedure GO
( D# r- S6 p; m8 y, d, C1 D. xOF expected input to be a turtle agentset or turtle but got NOBODY instead.+ j1 Q2 G! h1 V$ b
(halted running of go)) {1 k# R* v8 w7 H1 `3 E

: s/ S6 f3 J) Z' {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~~0 c% j8 p0 b! z
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1 i$ Z5 K  J3 a0 E
globals[
& V4 Q' ^& z7 x4 ^9 r8 x2 hxmax3 `# F! H* s: I6 u3 ^
ymax
1 E0 n6 u( f( V. H3 O! V: z5 rglobal-reputation-list
) n0 h( L$ w: u
! F: _: n) I  J: q;;
每一个turtle的全局声誉都存在此LIST" M2 {! y  l" ?+ H
credibility-list  t5 I3 s3 m( U# h
;;
每一个turtle的评价可信度
% _& f  p6 [0 D  F: }; l$ X5 N4 qhonest-service
* i/ C1 g( D: g8 k3 Ounhonest-service, p; i, D6 K$ ?! ~
oscillation9 O, B1 v; V  E& a1 _
rand-dynamic# U, _4 U6 \8 ?# M/ B7 K& ]
]8 y% _. K; E/ K2 y4 |3 y

5 N1 {/ o7 B8 w0 p9 Gturtles-own[4 H: v6 x+ S* V5 H
trade-record-all
+ |3 u  y, A8 a3 Z2 {/ p;;a list of lists,
trade-record-one组成: t! w: Z: U& O& Y7 t. P
trade-record-one
/ `' J6 g9 f+ K9 A8 h# h$ [% i;;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* {4 U+ K9 s
: T6 U1 U, R1 U9 \3 h
;;[
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]]
- U6 L! d2 X+ ^, u7 f* J1 y5 ?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]3 D! ]* U2 w# t" M! _5 ]
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list' \9 j6 b  `2 ^) {9 i, a  b
neighbor-total7 w3 h" M* ?- e1 z/ L
;;
记录该turtle的邻居节点的数目3 R  R8 p' s8 M8 p5 h
trade-time
0 S* g7 G6 ^( z8 W" a* A4 H;;
当前发生交易的turtle的交易时间$ C3 g! z5 ?  h  c: d
appraise-give* Z2 K6 L. B, R* k! e
;;
当前发生交易时给出的评价
! t& H6 \$ J2 k9 s4 [appraise-receive7 c( \: ~% T9 G$ f
;;
当前发生交易时收到的评价! ^. O, Y5 r& N) A& o
appraise-time! h$ O. u) B- b
;;
当前发生交易时的评价时间. f+ O: u9 I: z* G% |/ E& \6 j
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
2 X* M* V( z7 |: s0 ]5 v/ Btrade-times-total
" A, u1 A8 J3 E5 V+ L% l;;
与当前turtle的交易总次数# V0 Q( R* `' I" x% z
trade-money-total
6 H: M( C" o0 ^/ y9 ]; ^: C;;
与当前turtle的交易总金额# }9 |, s! z: x% K
local-reputation
( B4 m7 k3 e5 A' C; ]5 G4 ?3 G, lglobal-reputation" I- E. R$ [. G/ s  i  B
credibility
, g( @6 V% d8 m: ]7 \8 q+ i; m;;
评价可信度,每次交易后都需要更新- r- y+ t- G" f5 p7 B
credibility-all
( J: B( H( m; r0 r- Q;;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* m0 |/ T) \+ m& ]& g, C' w
6 C% o. K! C3 r8 I8 k1 x2 t
;;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
7 |, c, e4 d1 M) O% u8 C9 V% A* P+ n% Acredibility-one
6 [* P7 K$ `' k;;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
* M) Q2 A8 T, I& Nglobal-proportion
4 |. Z! v5 n9 fcustomer7 e- _4 i! p6 }+ k. X
customer-no
2 s7 ~6 q4 x3 G0 X% ~. {trust-ok
- O! |( u6 @+ l+ v4 ltrade-record-one-len;;trade-record-one的长度
+ O  s* U1 O4 t! P5 J]
4 T* A  T4 j: X) Y, r5 P# m% V& A$ T% G) j
;;setup procedure
) T5 ^+ @5 O$ \, K7 f& ?+ U! G( g  D% b: `9 o/ v/ k- S
to setup8 v8 W" n- c) o
0 W8 O6 F1 C# l+ U* L
ca

: X( d" G6 N% T
( \2 W8 ]" P& v& s5 F  l8 ninitialize-settings
$ d9 n+ k9 o7 p" l6 f, ?

$ V8 H. ?; Y  Kcrt people [setup-turtles]

3 V4 t! m7 M) C5 H9 [
$ l; Y5 F4 T2 F$ p: [: qreset-timer
6 Z/ i) v& L5 ?

, v9 d% w/ r6 npoll-class
+ Z7 ~6 @6 Z) Q
" t# E+ ]; l% J4 B0 n
setup-plots

& [; F9 e0 T- g" a4 f' V) M
9 a' w5 E: g% N, ]do-plots
/ H, P1 G6 f7 c4 x
end
  I+ J: C# k% d3 N/ f, R4 G
0 F* f, @9 t- s0 C( W" Hto initialize-settings
* v+ p" j$ E! n" G; Y+ B, o
) E' N" Y+ o' t2 @% D. ?3 Fset global-reputation-list []

' N; e: c  {  Z% y7 l, |0 |
5 J: ], d. h% G( j( {9 hset credibility-list n-values people [0.5]

: I) f3 m. g6 T: d% z- ~- \& r0 M* E2 z- v: |  Q$ G/ Q/ ]! i
set honest-service 0

: u7 K$ J/ p: \2 U  ~. D9 }
! l% a& K! t8 E5 D3 }" Vset unhonest-service 0
' |' p# f- K4 l/ Z

7 E3 N( y2 y' `; u6 q" ~set oscillation 0
; M9 Z# K% m5 A6 ^2 f# q

+ ?8 y8 s  Q* J# F/ N: g: \. Jset rand-dynamic 0
' V# C! Q: {6 q0 M: L+ [1 T
end
/ J2 ]9 U: P. a7 n! w4 E* M4 }+ R' d$ J0 S) U' v
to setup-turtles , O- M3 G+ ^5 V) w- L
set shape "person"
1 \7 }) p9 ?9 z  ~+ L4 esetxy random-xcor random-ycor
( l. l3 [1 m4 H) K4 Rset trade-record-one []4 j) X# ?" O0 _# q  a# K% l8 l( V
* F! g: }2 h. d  j6 c. J5 w" F
set trade-record-all n-values people [(list (? + 1) 0 0)]
5 d) U" D" ~# d
- J: x- v$ s9 V: O7 o. c7 N
set trade-record-current []
5 W& t$ o" x2 m7 nset credibility-receive []
2 f3 u% _) L! K4 T3 Z5 Bset local-reputation 0.5
- y6 L$ [: F- b4 R- l8 Gset neighbor-total 0% q  Q" T' v7 i& Z* [
set trade-times-total 0& N. }9 `' W+ `2 W* C) P
set trade-money-total 0
/ B# d. Z/ Y7 u/ |, G$ K% l; S7 Dset customer nobody3 m/ x- |3 V( u; ?
set credibility-all n-values people [creat-credibility]
1 W: D# K% L- }8 L1 f5 Iset credibility n-values people [-1]% w& g: R; ?  l$ O0 }8 p2 @
get-color
% M. C. y( [* Y: i2 i; j% Y. D

  q: Q& x7 A: Xend$ T0 t- `$ C9 O

  P. J  G! [/ cto-report creat-credibility
0 C! A% O# ^! y) E0 x: q& R  i1 Zreport n-values people [0.5]+ {6 ]+ V# S& m( x1 [
end
- [/ w8 Y+ ~% ?: n9 t9 K3 J: C: u; Q: |+ P- S9 N" {
to setup-plots2 L+ `6 n3 o2 F* O+ k- v. H
: M) I7 D# b6 W2 `% N
set xmax 30

- r2 u# E7 X- s2 W
. q6 l* ~: B% L! N: c$ hset ymax 1.0
5 P. i4 |. I1 V
3 N. z4 t5 W3 Z/ B4 u
clear-all-plots
. _  f( T+ t, m; }0 |  x

' F2 D, ^0 N, d# R# Dsetup-plot1
. V0 |9 p& U' v- t$ G: k  e
3 V2 V0 ^6 K5 E, Q- q
setup-plot2

5 V4 b0 h- d0 z' [; N
3 S) `' q1 l+ J- lsetup-plot3

7 k! X! S, K+ P+ z; e8 b/ j4 `end
0 m  q5 M" n- S* {7 R, ]0 s$ l$ d9 e7 G1 C. m
;;run time procedures
' u( `" a; P* d$ M6 A& q3 h* l% G" W: D
to go0 j* l- |3 d+ r* |$ J

4 `+ O  g! v: V- v& q6 Z0 ^ask turtles [do-business]

" Q' Y( x' }7 y$ J% q" xend& r* n2 b  S+ d* [+ ^4 y& R
, r7 N) u. B: O: {4 V) M; ^8 {' M; Y" y
to do-business
6 I9 l& I- j9 ]5 M! Z- x8 s* o

9 m- c# C5 Y6 M4 |
" p4 X. G; y/ I( art random 360

% m$ D! \$ d6 ?: x% q; D7 Y8 J5 V
7 @3 W" i+ v7 ?/ l+ [' ?fd 1
1 W/ O; P9 c. H( ^

, I; Q, |, e1 J/ xifelse(other turtles-here != nobody)[

, M/ i" o+ A* f' S1 `1 z# M: B5 Y8 M
set customer one-of other turtles-here

* L- @! l, g# k  |
0 z* p: m. b! b. O6 G" _;; set [customer] of customer myself
8 i% _6 ?' H. h* y0 C

4 v, A% `+ c2 A, qset [trade-record-one] of self item (([who] of customer) - 1)
2 F0 x7 c2 k& F- w. z" \[trade-record-all]of self5 U3 I% u. P& j& ^( |  {( j6 d) b
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

& b' z% H/ s; m/ W+ Q
, t5 J) o! r3 e- `+ Lset [trade-record-one] of customer item (([who] of self) - 1)$ T% E# `* L5 J
[trade-record-all]of customer
1 b  n# p7 M+ m4 V* f) {
3 q: i% e! @0 S9 @( T9 a1 m
set [trade-record-one-len] of self length [trade-record-one] of self

4 \5 {" C4 A7 y
- j7 D1 H/ z8 P& W3 J( Eset trade-record-current( list (timer) (random money-upper-limit))

6 U% g2 T$ Q0 a, R; p$ q* F. s  }7 N2 Q
ask self [do-trust]0 q' W/ W5 E3 P) o1 Z
;;
先求ij的信任度% i7 C) @8 Z4 P7 a. _

1 i7 {# |! X7 Z+ }if ([trust-ok] of self)
0 ~7 p  U# B% C' |/ D7 A;;
根据ij的信任度来决定是否与j进行交易[  a/ K/ u: P3 Y" d8 j$ H4 Q
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself7 @/ h3 U7 K' e* p* A

) c* v8 C1 g" |3 c' Y- v0 R[

0 |, X( p0 ~0 }, F0 [' d! y3 q$ L: s
do-trade

5 Y8 t& p$ R7 ?5 Q0 g  l& X. F$ u. \; T8 g+ D
update-credibility-ijl

/ N: K, p7 k8 r; Y3 z3 `& b* W( j# w+ s: w
update-credibility-list. H2 F& z" f0 e

# j% a/ I1 S$ H9 o1 j1 b- n) G: y: U1 c
update-global-reputation-list

9 J& s3 i- t& l$ s; \1 d1 b0 F* x( A8 t4 u4 T& ]$ C  P( s1 T) |; H
poll-class

8 P, ?) L& m7 N+ y: u
" A0 p8 e) c& Y$ ^) kget-color
# l$ f* p; l6 L# @( o

- \* O3 H) j- L]]( p. j+ L8 p8 K: }, }. D
! z+ h# a0 ?$ H; c7 {! j# ^, h
;;
如果所得的信任度满足条件,则进行交易6 Z  @0 f4 ^4 b) w/ E9 P6 Z8 ~

- Z4 l! }& n, m& L, o[

* B! k0 m! ^# x% H
2 d/ I  n5 s! n$ s( \rt random 360

1 h9 [' R' y  b0 I# H3 L/ [' V( h
fd 1

% ]. E$ a8 Q2 y, R: F7 b7 ?2 z4 ~; ~# ?( h8 W' ]/ C
]

' t* _# p0 y; U. J5 l9 {$ d- j+ M
5 Z% V& ?3 F& K8 D- ]end
/ m9 d+ c) F" a$ u6 `5 b/ Y

; u9 T" S( d, Ato do-trust - L# Q" P5 ?" r+ m0 S0 J
set trust-ok False" _0 v+ ]) `2 r2 ?" {

9 a" I8 _) U8 a" K4 o' W
% V; ^4 m. b8 ]$ n4 S6 y3 n4 F% Y* U
let max-trade-times 0
  F" C$ `# X# b% H5 K/ d5 eforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
6 J$ c; r3 g' x6 x5 M0 Alet max-trade-money 04 K6 d6 z7 w4 O
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]: H! W1 Q$ t( Q6 c, g0 m( m
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
7 e/ s) {8 r1 x% b% Q( x  a- {
$ o2 g6 S: D" |! t/ ?

4 I7 `1 G: K0 k; Z- n" ~get-global-proportion
+ }% E2 k- u/ J0 F1 Xlet trust-value
! b+ X" J1 Z" m6 ~# G- I9 ]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)

* E- v9 A2 o5 D* x! Y. ~6 Nif(trust-value > trade-trust-value)
& W& N. ~* P4 q8 S, t3 i[set trust-ok true]
1 Z. o* s  ?$ @. {6 F; U* j) aend
4 ^/ V/ \" @. u: u3 m  Z# x& O3 P! ~2 k
to get-global-proportion
+ b& t, F/ \$ x: s9 m( lifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. C: ~' B# h3 h+ [0 G8 U[set global-proportion 0]8 I8 F& d. A0 R7 B, A
[let i 0
4 y3 h8 p  o% R9 A* ]let sum-money 0
7 N. S7 j7 b+ I! \6 i. I7 Nwhile[ i < people]" ]2 i3 J* Q6 s% K% O
[% ?3 I% r0 K: R' l. r7 i
if( length (item i
/ g& A% V$ z3 O[trade-record-all] of customer) > 3 )
+ ]* K$ S" A9 x. S! M, x
[
6 x5 Q' M) b1 Q4 v! hset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
0 D2 H+ T/ g$ u* s( k% H]2 r- L# c3 R6 C5 E: Q5 W
]
7 x* D* M4 s2 s& Jlet j 0
! G1 I- |0 E  [7 Y3 G+ d- Flet note 0) J! O- l8 g) Y( h! d1 i1 `9 ^
while[ j < people], H5 }; S- I/ I9 b# m) x
[
8 H% ^5 g: E7 M" u# T' ]if( length (item i6 T7 Y. z8 o' G. N7 R- o
[trade-record-all] of customer) > 3 )

$ G2 [" T- d4 a4 W8 B" u[
3 r- E. N1 W2 |7 C' O$ {7 z$ m$ yifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)1 F" |8 N# x! [7 G/ f: {
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
" h4 E4 H6 S, g$ p3 R2 D$ E- q  O7 y9 C[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
- {/ A* d( y9 F" Y. ^& Y]9 F: G! I6 }! E9 t* Z: p
]; \4 y; ~& x* `  f
set global-proportion note' f2 x1 Y4 }$ k0 l$ s
]2 |+ T1 Y) `. v9 w
end
2 ~  r& `) `! j" N1 L$ |
8 V7 u& [, L/ d3 K* Nto do-trade8 @0 E! I' W0 Z* O, X: M
;;
这个过程实际上是给双方作出评价的过程
) h+ M- a0 R. B  Z" H; tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
1 O3 D6 a* N4 d2 W% uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价/ ], X) ]9 I$ L3 ^
set trade-record-current lput(timer) trade-record-current
# \2 S; t) M* v4 f- Y# ];;
评价时间
# R- ?% o% j* K6 @ask myself [
" v3 P/ W9 D) C5 H) d" [update-local-reputation
. s! |# N& x. H3 K! X* {+ q" oset trade-record-current lput([local-reputation] of myself) trade-record-current
% v/ X6 b. i  E5 k]( w) g3 }7 M% e& {- z3 f$ i5 q3 }
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
: m$ c- {7 ?) l" L4 f; k' F/ d;;
将此次交易的记录加入到trade-record-one
0 Y7 }/ K; f9 j9 I2 Wset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)  K4 R- b. Y0 \6 t% M% H  B
let note (item 2 trade-record-current )0 r+ y5 r; p. \' S6 o( k: }
set trade-record-current( p$ S% W" x, o2 t# ~; o$ y
(replace-item 2 trade-record-current (item 3 trade-record-current))

. g2 [% C% U6 W" `set trade-record-current
: V' X  C9 _2 n" F1 b(replace-item 3 trade-record-current note)
$ Y' u' C1 w# c, u/ W
/ w5 E+ e8 W6 h1 R( i) R. o; G

; D4 O' k# C# N$ O3 ?ask customer [
& K7 g  }! [3 L$ x/ G9 i8 D* aupdate-local-reputation
) |5 ?7 d. S$ L2 h  Uset trade-record-current
# P- t. A0 g6 i3 j(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
9 d8 S3 d; J5 e' M
], s5 e0 f; Z0 B
! l5 T- o" {; `" N1 \

  S: q" a8 M( cset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer% `. N; u- S7 y

+ a% w: k6 D0 |9 z$ lset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)). ~. b: j3 e2 V: r
;;
将此次交易的记录加入到customertrade-record-all
) O$ }/ s/ X3 f8 E$ Yend6 h" Q+ D: b0 D: t1 l5 D9 F8 ]& `

( @; Z/ W! e' ?3 bto update-local-reputation
% L7 ?5 i& f% T  d2 Z& z* vset [trade-record-one-len] of myself length [trade-record-one] of myself
" [4 V! k5 k! w9 X5 g7 [7 ~
3 O7 V6 h) C6 b5 @: g2 D% w- U3 k. r0 b$ v8 {1 K
;;if [trade-record-one-len] of myself > 3
: d+ D6 @, {+ W  s
update-neighbor-total
  Z, G/ C' a1 Q0 M6 a# V$ H;;
更新邻居节点的数目,在此进行# @% t- k+ W# t! A, L5 F6 `
let i 3$ U7 c3 ^8 z- K
let sum-time 0
0 m8 W- k, |: x$ `/ M( zwhile[i < [trade-record-one-len] of myself]5 k8 h% H* o8 K& a- z5 d4 j) m
[
  m2 h+ V1 t- ?$ r1 L& qset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
; B; d$ B" y1 Q2 M/ {0 r7 j$ i. j  qset i
: m2 c9 U! i3 G* u( i + 1)

, h. K! x$ q+ Q  B' o( V]# v. _+ v) C& q. |! o
let j 3
0 Z7 P& V+ h- r. j& m% e5 N$ g+ _let sum-money 0; h  l6 V, ?3 W- L3 o9 _  m
while[j < [trade-record-one-len] of myself]
6 C( h$ ?7 y4 @5 ~5 Q[
- L/ D- k( b; `  ?* T( y. V! T% Eset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
0 m7 i$ X' j$ I' `* aset j
  j( q4 n0 f) F6 B3 S( j + 1)

* l% v9 x2 k% m" X+ X]
! l. {( H2 K2 b' J( ]0 Klet k 3
9 r: j) e+ a+ l* Slet power 0
7 b! d; `$ d$ slet local 0
7 [2 }7 N, u# F/ gwhile [k <[trade-record-one-len] of myself]
4 G2 N8 e; V$ E7 D4 ^* h! L: p[
1 N  Y$ W  P6 m' F& T7 kset 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)
- Z' y5 e" G. G& o( Hset k (k + 1)
# j8 G* u3 n1 w- ]/ K8 }1 r]
7 t" y# z+ G6 X' M- [4 H# O& _3 xset [local-reputation] of myself (local)% G) ^' {- e5 ]2 D7 G, K6 r- Y* T
end
% R! F! F4 l* j& e/ E. m* w
' [1 l: H; z  `2 lto update-neighbor-total6 ^+ M* j3 V4 f3 ]4 o

$ z! ~" ?, A: G5 [, a. W% g( Dif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]7 ?, M1 K# x8 L8 e! n! o* E0 ~
) K$ X  ~6 ~( i- J# k3 p

! d3 c" Z5 |" q% ^end& y7 a1 J" a, j

4 _$ v. K* D8 U6 k, _to update-credibility-ijl ; B: C4 h# }# z2 V9 a5 J; b' ]
- |* c' \) L: s: w9 y; B" T1 q" D
;;
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。* b+ _( _8 E1 K4 ]
let l 0
2 R  I2 \- o# z* e) E4 F- Lwhile[ l < people ]
2 k6 z/ Q' T8 R! I2 e' u/ X;;
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
' X6 Q5 G& {' B1 P" p[
) `& n/ L9 y( }5 b4 q+ Glet trade-record-one-j-l-len length item l ([trade-record-all] of customer)6 Q7 h2 F: K& @# C! k. @
if (trade-record-one-j-l-len > 3)" k% `* E$ I/ z5 o5 E0 O
[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: U( m6 H! f% i! L' O/ ~9 o
let i 3
( F* k# s& R$ Alet sum-time 08 s( g# A$ A, c& s5 Q8 C8 q6 c/ V
while[i < trade-record-one-len]
1 m. n) b6 G4 v; n7 C6 p+ R[
. E+ ]- a+ k" t/ K2 j' _set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
: h; A* n! Y' v$ f5 ~" |set i
% |! K/ i8 W. {3 R4 X/ k1 f: W" ~( i + 1)

* T4 B4 p7 Z& T& y- S8 K- O]
, B& b% `9 S/ `6 h' J4 Klet credibility-i-j-l 0
9 h1 B9 x# O' I9 O' m;;i
评价(jjl的评价)! T+ P% x- s& \% o
let j 30 x3 n; g  n8 Z6 y% Q
let k 4
/ ~. l+ F6 ]4 ]! _0 Q2 m7 cwhile[j < trade-record-one-len]$ E" P& g% l7 q' B' b
[/ ?( c. I  }' N8 E, d, [* c' {4 `6 {2 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1 L" f. T$ ~4 O' T! Y  o8 ]$ [
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)8 u6 }. i; o2 J9 v: {
set j, @. Y# Q7 B# X, s
( j + 1)

  z4 D7 p- N& ^- p8 R# U$ L; q$ f]. ~! Q- P( }3 a9 D5 g9 j: 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 ))' V+ d* }! j4 K& u! r& ~

  j$ W0 I) d, F

+ G4 s0 Q& J, V; xlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
) K% a" H7 Y8 N;;
及时更新il的评价质量的评价  ]4 q- J2 k4 a8 A$ B% ]
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]& f5 X3 q* D! A6 j; m
set l (l + 1)+ d) P! o0 B" Y- u- i& L! c
]1 x3 t( l) l0 h) Q3 l  L1 J% [
end- u$ e! k  \6 O# |) s: ]
8 s" C" N  R1 F
to update-credibility-list
0 K6 X6 E# e' L. ilet i 09 U( ?8 f; D# ?) ~( Z. q# P
while[i < people]
& n, ]' i2 F) y' ~. I- ]( ][  w" b  v1 k  m1 w6 K
let j 09 ^! [" C6 C' l3 Y  z
let note 0
. O" ?2 V; b# e+ w; O' Llet k 0! F. _3 k; d; J$ L6 t- \
;;
计作出过评价的邻居节点的数目& k3 H  [* e: Y. t( ^
while[j < people], a/ f& S5 V/ [' B$ \- Z6 `
[
6 z: Q, D+ }' ?5 w% @* Kif (item j( [credibility] of turtle (i + 1)) != -1)* l% I$ x; E) H) b
;;
判断是否给本turtle的评价质量做出过评价的节点
* i( w" y: R+ Y4 r7 R[set note (note + item j ([credibility]of turtle (i + 1)))
( m. x6 X7 A) b- s8 ]+ f1 E;;*(exp (-(people - 2)))/(people - 2))]

' T4 g4 }3 e8 ?. X4 S' _set k (k + 1)! r3 D7 Z9 G. U7 l0 M" B* T! E
]4 N* y( Z/ }! a! m
set j (j + 1)  o4 G0 Z* o: X) P. i, [
]
2 f) v& Y  j$ ?8 k0 U0 _) C. W( Sset note (note *(exp (- (1 / k)))/ k)7 b" \/ |" i3 P- o8 l1 Q
set credibility-list (replace-item i credibility-list note)
6 p0 R3 K; ]9 i) X  G* l+ Tset i (i + 1)+ M) j7 @# y9 p* N- W$ X' T6 r
]  F& m6 P) d8 @! K7 S- O
end+ z1 L/ ?% i9 u0 C8 k6 G* A; @* f
' a7 S) Z1 ?* ]% d# S2 Y) W
to update-global-reputation-list  Z  k# I/ }5 f. s, M& I- r
let j 00 F. j6 s8 B2 Z! u' u. v2 f# N- I$ y
while[j < people]+ V" l# L$ u! T' k; H5 l3 C0 B
[
; a0 Z5 |. P6 |6 nlet new 0
! a0 M+ Y2 `2 j+ i) P;;
暂存新的一个全局声誉
9 ^) T0 O0 g$ G' @) @% K7 Ulet i 0
- U9 z4 P/ s* u$ E8 Wlet sum-money 0: ]4 a  Z$ i" O' |
let credibility-money 0
2 t+ h9 F0 o/ G- hwhile [i < people]3 a$ K2 D+ p+ {
[
8 f; ^" {$ y7 u) Lset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))1 e" R) l* g- X9 R' F& ?5 x
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))  W: i8 X1 Q! _+ c& m6 w
set i (i + 1)
0 n+ F9 L' r! f9 D  J]5 q" A8 D/ H. }
let k 0% T! ~" P; C  i! o
let new1 0
2 p* g( `% @9 gwhile [k < people]2 w) g3 R; W1 \* J' e( k
[
8 G% a  C" z& d$ Mset 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)
# c: A8 L" N8 Xset k (k + 1)( p/ Q6 q$ \4 _! U# c: A
]
% f8 T5 t6 _7 a8 L8 p0 k+ r" Mset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
$ G, b" [# j& R. j  Sset global-reputation-list (replace-item j global-reputation-list new)
: V3 \3 J% Q4 m( ^( |4 Kset j (j + 1)
5 z& @4 r+ v" f9 Q]
$ V( a* `& G" q, Hend
1 e5 }  o, {" g1 Q! o* j) ^# L6 ]- B% s% C  A' E
& s% M) q4 w# Y5 D/ H3 X
0 j0 E7 z& R5 P% u3 k0 r9 G9 j
to get-color
( Z" f( v, s  \$ O
4 i: Z  [9 a2 K8 m% `8 B4 Fset color blue
/ t) y* x* G4 m, h0 y8 c8 Q; A
end
5 O( ^6 [  t" \
0 t" w1 E$ S+ U) x* F  q  S  ato poll-class
( F0 S9 q" t9 m7 {6 A, [end# |5 C0 U" Y5 d3 f( t$ a& Z2 t4 a

! `+ ^9 g* w- E# }: Jto setup-plot1# f# L& \9 Z, ^* J

# c' G8 V% \+ @. _* a+ K; `set-current-plot "Trends-of-Local-reputation"

3 R. P8 V& V& x! d, c4 G+ A8 H/ m1 V# l5 z+ o* C7 ^8 }! ^, [3 y9 _3 k
set-plot-x-range 0 xmax

/ w2 U% Y9 d  M4 P
. A. p3 A6 y, _0 ?% a$ `. Kset-plot-y-range 0.0 ymax

% T) ?( w, x$ f  _3 X( e7 t! v& M1 Xend
+ F' \; [. [/ X, v- Y* Y' o8 h7 w
to setup-plot2
3 o* k! {5 H6 h/ H% S
! ?, t) r! b2 z; {' Pset-current-plot "Trends-of-global-reputation"
$ H1 Z  b4 |4 O

4 e' L0 w! R5 [, R% z- R! V" |set-plot-x-range 0 xmax
/ s& m1 D' r* i' J/ q4 u
" x& h$ O# r6 J& e: }  I
set-plot-y-range 0.0 ymax

3 ^% {, p( H, ?* y+ ~6 d; \end
% V  M7 r  [( G( C7 l% v# }6 \/ \; g0 H0 m+ a. Z& g
to setup-plot36 e1 n, V. f* n8 l( |

1 y; c6 j) ?5 E3 Zset-current-plot "Trends-of-credibility"
! f" E$ x$ m9 y( x

/ u& ?" J2 o' k' k7 C) `set-plot-x-range 0 xmax
3 h. {% t1 Q" {) `7 |. N9 z; Z* E
5 }8 P1 a5 t# Y/ O' r
set-plot-y-range 0.0 ymax

4 M, j( |. Y+ h& uend
, g2 ^0 M3 u; g8 c; o7 t0 N) h7 }7 Q- s2 d
to do-plots
( q0 u, T/ `. _* g/ xset-current-plot "Trends-of-Local-reputation"" g3 s  j: F9 d+ A. h
set-current-plot-pen "Honest service"* k: J- y0 J+ ]' t( V4 g9 |
end
4 ~" I7 I- J4 E- E4 A6 q
1 h$ F- W+ E, F( e* l[ 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.) B; ]( _  }/ E& L

  l$ c7 ]' R; H( C5 k5 ^. z) @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, 2026-1-5 13:48 , Processed in 0.021335 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