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: 16053|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:
, O9 H# F2 J% U$ o3 V, z, I9 j, w; E+ Zto do-business 8 M. ?: I3 r0 \* L
rt random 360% X& o  f$ m, H; M; t
fd 1" m8 _6 F. f/ y) E) G8 J' u: _
ifelse(other turtles-here != nobody)[
  _$ C$ M  `7 }3 ]: S3 W- B   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.
6 w5 b4 [3 H6 C# f, v) f9 x7 c6 c   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    2 {0 J( X( t2 u
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer  ]" |1 Y* g& P# n" j
   set [trade-record-one-len] of self length [trade-record-one] of self
0 b# \, U& a  }4 y) E  h7 x+ r   set trade-record-current( list (timer) (random money-upper-limit))
( O+ {/ e6 G, X) ]/ P! R9 y# Y. L
问题的提示如下:
2 ?! ]! q1 U( [1 Q$ ]
8 }2 u+ U! i) l! Berror while turtle 50 running OF in procedure DO-BUSINESS! a; g1 n4 `* k
  called by procedure GO
( K' u1 X3 @( Y& B5 j/ ?: jOF expected input to be a turtle agentset or turtle but got NOBODY instead.
0 Y" o& n; P: e2 j) ?9 S2 z
(halted running of go)
6 N* X+ o6 e, M9 e6 Z8 R. I
4 }$ H6 X% U1 j- E+ F1 v  g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~~
* z& x2 s! x$ P+ k( x3 W5 H" e- i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9 P2 V4 C) O. f% y
globals[* }9 |) m1 X) W1 _, m" T4 a
xmax
( z# ^" h6 i; H9 }6 Tymax
3 @: T6 ]) y0 x9 o& G- i; S% dglobal-reputation-list
* r& q. G, d( C- Q1 X
4 I8 h: N! @9 E;;
每一个turtle的全局声誉都存在此LIST
* _0 c% R* ]- h0 T! ucredibility-list
) [: G: @' X% [6 e;;
每一个turtle的评价可信度5 R0 \+ ?6 C! T4 g7 i
honest-service/ o$ Y/ t' [. [. c: R
unhonest-service5 p+ G7 c" R1 A6 `3 t" l
oscillation8 P* P5 G; t+ S
rand-dynamic- F: b( k4 z  n
]
! S! \2 P; M! L
5 E, A  ~3 _% u) k+ P9 Rturtles-own[1 S- }; [1 V6 `8 l; M2 _
trade-record-all* K4 d' X% h" t
;;a list of lists,
trade-record-one组成
' Z% B% s% Q6 }/ k) Z* B3 E, y6 Ctrade-record-one
3 Z; w* M7 b- d+ Q2 d2 L* b6 G: @+ `8 b5 ?;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
# j8 O: i! L: D0 ~. F2 t
  @+ L  o' n+ Z) w, R9 {+ A;;[
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]]& r  E9 ?" X, ~" \5 q4 b4 U
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]: E: ^  R& o+ W4 t. b
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
% P. C: m/ b# v+ fneighbor-total
9 R' b5 c) ?# u; n6 G;;
记录该turtle的邻居节点的数目
, B3 P: @, R. r: I, d/ Z- h- r" ]0 otrade-time7 I% R6 ~! W' d9 y
;;
当前发生交易的turtle的交易时间
' F& Q4 X" \/ \" E" j% Iappraise-give2 T$ q, a' _' M
;;
当前发生交易时给出的评价/ I7 s; X+ P2 x0 }
appraise-receive. m+ [- T6 m. v; \2 j1 s: I0 F
;;
当前发生交易时收到的评价
, g( l& X. C: gappraise-time( e6 i6 Z- [/ |. G( k7 Y
;;
当前发生交易时的评价时间9 E6 d/ c* c* ?, W% M% Y. Q- S
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
( ]" _2 Z$ m8 q# g/ f2 jtrade-times-total
" f( P9 _" p) W7 F6 r2 }, g;;
与当前turtle的交易总次数. \. `% x! f* g1 l9 ^
trade-money-total6 v' [4 F2 {. I! Y% V! q! G
;;
与当前turtle的交易总金额5 F- r4 [0 u0 t# `
local-reputation
3 l. `: i, d( a8 Xglobal-reputation
% S- a2 V' e4 ]1 hcredibility* F+ T9 z) }" ~
;;
评价可信度,每次交易后都需要更新( h* L5 D/ t( y/ a; i/ Z
credibility-all+ D3 }) _4 C8 [4 l/ r
;;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/ Q0 M- T0 b4 V5 x  K
7 y3 w9 [0 S5 N& x1 b! t# Y% u
;;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
5 D0 ?' m% L& B% ~) h7 b% icredibility-one* S4 m( _: m2 l9 b( 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) s+ l4 c; `3 n" A8 y  Q
global-proportion
/ P3 l- `) U" V' L! D4 e5 v2 r! wcustomer
6 Z; M8 N9 o1 U2 {customer-no( x% E& i3 V1 m( E* O+ r4 {8 t
trust-ok$ v% G' f3 W8 M: ]5 Q/ E3 c
trade-record-one-len;;trade-record-one的长度
# V) X2 Z% }1 d. ?) a- ?; l]
0 u" z( ^. D( V3 t
- x# d7 i  U! ?3 b% @. X7 l;;setup procedure) f! K: K5 n4 w  @+ Y/ i# |

. x) m3 \. A& e3 C% J& fto setup
$ Q' @/ L( r( T& j% f1 p* [" I2 {+ }* E; |3 s
ca
# o$ P  n% f9 j+ ]0 @' E

4 q# X1 W" e$ X+ u/ Ginitialize-settings
# x. c7 W0 V6 n- t& D

& I2 E4 |# |  z1 `crt people [setup-turtles]
  u) y' ?. i9 `: W; \

! w& y2 ?1 D1 T* V" g9 b: c( Nreset-timer
$ e5 N$ i& G* s  d0 D

% L4 R6 M" F  C& {poll-class

1 k% U. Z" {+ G2 b- g! `
; P, Q. j' M# ?$ Q  N, wsetup-plots
( M; ]* z0 H5 l) m; B" A! P$ _

; ^; |& l, t5 T7 _: V/ Ldo-plots
8 d; v. e5 E  H
end* @9 w) C4 ?1 d4 F8 S

4 X" d: r# E9 G5 l% f. k* Xto initialize-settings6 c* |) t; d1 |+ r7 L2 V3 f6 V

  a) y3 `# {1 K- @& J$ }. y9 |' f! fset global-reputation-list []
: p$ O$ J+ U) a/ v
4 ~5 b6 b3 Y0 L, v; O9 @4 l
set credibility-list n-values people [0.5]
6 x, u4 U( c8 i0 W4 u

" R, b" t- ^3 c" G( }' W2 mset honest-service 0

7 H. C$ ^) n3 ]# }3 I$ J' S/ I" o2 u& f" g( V
set unhonest-service 0

2 h4 `8 w8 t2 e( j" B: h4 v7 P
0 |, [- _1 S9 b: Jset oscillation 0
, r" ?2 E1 x" k9 \2 \4 F; |$ D
' ]8 `; T# H9 \1 m
set rand-dynamic 0
8 F7 n) V  Z/ F- `
end" C! b0 F& Q5 X3 T, B
; K* O$ A% q0 I" S1 o
to setup-turtles 2 B% l) X- z8 ^* r/ }8 ~. ?
set shape "person"
; ~0 @( v5 s& k8 J2 w. \+ r) N7 ]setxy random-xcor random-ycor
) J! d' i8 G9 t! T3 hset trade-record-one []
+ a* B0 B" m. g4 L

2 I3 V$ u; Y+ Z" `set trade-record-all n-values people [(list (? + 1) 0 0)]
% ~$ _& Q8 h* T: L  y2 o& ~* Q5 C

% o7 E9 w; p' B2 dset trade-record-current []
* s( N) e4 O3 Q0 C) f0 ~# Gset credibility-receive []
. y# o/ O, j  |" E2 s# _set local-reputation 0.5
  c2 @6 @6 n0 t4 x" {set neighbor-total 0# Z. f! b: {9 _9 G. t! m) Z
set trade-times-total 0; N) a- ]7 _  P4 u% [8 g
set trade-money-total 05 @; w+ p( {9 p& x) `; _  c2 @% n. H
set customer nobody$ j0 B! G8 _) n! t
set credibility-all n-values people [creat-credibility]
% x% p9 w3 ?" _# X( b! J" w- Wset credibility n-values people [-1]0 Y( [: x* G7 A5 y
get-color
8 b8 A9 @3 _, P- y2 f9 t! V+ W5 e
, _& _% o" w3 h( b9 U" _
end  D. J+ X2 F1 ?) E+ o! [2 c
9 g  }, P8 s4 Q' \
to-report creat-credibility
, v+ J: u5 z. {7 A4 ^- S5 oreport n-values people [0.5]
7 T0 ]& w/ s" J' aend+ c: X) j& T/ x4 x: n2 |/ L
& X+ X1 d  w& D. `* \
to setup-plots" }% Y* O- O9 R, n# V
3 |. Z& c) u1 o1 E, J
set xmax 30
# n5 t% V; B. I6 K- \
7 l$ W# o" n$ n0 n( t  c" b. b
set ymax 1.0

; |' S* H2 x0 R7 n; u) h
7 P. x1 A. A6 R" W4 U1 U! jclear-all-plots

( ^' C0 \0 ^& @) ~% e1 ~7 `4 e. f  {  X
setup-plot1

, ^1 E2 U$ z; n. F8 B3 {% n
/ O5 F& ~6 W% d& J! usetup-plot2

* Y; p% {: T, |
  [: e8 O' P& _' c9 ?setup-plot3

! [/ ^5 P" L, X0 [% Q% nend
5 M, C6 }+ N+ L( p/ I" y  Z) ]: L0 r
7 r. w$ m3 C+ S1 o; p, |4 h;;run time procedures
8 q5 t, M% V* o. L  }! I3 s( o7 y# ?: P# q1 O6 j& S8 j' e
to go+ Y& k5 J, Y( g; R9 p( h$ o" G
, b4 I7 v0 M9 x+ h: Q) L- H
ask turtles [do-business]

7 V& p( G; y/ ^' m! ?8 [/ qend
7 z' `# y' d  A# D: f9 a' E
4 }( w4 a$ Y6 M2 W, Q/ D! ~to do-business ' V; w: V$ ^- i, b7 U

: x' O2 T3 A* }1 H9 M/ t2 i* W
! b- U7 o0 ]) m6 u6 p( lrt random 360
1 k% R7 A1 K* e* a' j0 f
1 Y* a- C  f9 ]! I. s
fd 1

. }  O# l/ c% q. b- q! W$ S1 L' K! _& q8 _8 _
ifelse(other turtles-here != nobody)[

; P8 n8 q! F5 D4 N4 o& N  O( r6 w; g) O
set customer one-of other turtles-here

8 Q' n+ s0 n$ q2 N( Y8 \2 n0 R4 {4 o( Z- B2 b/ O
;; set [customer] of customer myself
) @3 h; G6 Q* _; x+ [

- h0 ~8 H" O  b& G' r; N) @set [trade-record-one] of self item (([who] of customer) - 1)( \2 [# R8 ~& ~9 C. X; r# ~
[trade-record-all]of self
9 `  b9 R$ F$ c9 W9 r: p3 r;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
7 C1 |0 Z- X/ x4 m

/ @' l# v- T- I" Y+ lset [trade-record-one] of customer item (([who] of self) - 1)
" T; Q7 V( B2 a$ n8 u8 U# X+ ?. }[trade-record-all]of customer

3 K( T/ ^" Q+ S& {% v( {/ j9 ]6 _1 p/ H  y: x1 }; S; V
set [trade-record-one-len] of self length [trade-record-one] of self
. l/ b3 O5 v. A

: h: m" [: a9 ?0 Z. W3 e( bset trade-record-current( list (timer) (random money-upper-limit))

, v' C, |% p% ^- R9 s6 X- R- |& i+ y. O8 z9 G6 J7 p2 |
ask self [do-trust]
& ^6 N  v: p/ p8 B1 Y( o) T; |2 [;;
先求ij的信任度% c2 y3 W( k6 W, l, N- b- y
( _6 b. \1 Q4 R5 E' f9 u: U) j( \2 M
if ([trust-ok] of self), r5 D& K1 u1 Z: }
;;
根据ij的信任度来决定是否与j进行交易[
$ F6 O7 s+ _/ ~) I( ?" bask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself/ j) n! ^5 l# {& |2 c$ E" d

) A+ x* ?0 M" n7 s- ~4 E[
8 y* n$ S5 Y# \: k, r( T

( Y* m& G5 F! a/ t, fdo-trade

2 k6 o1 ~1 S7 \9 i/ A; R' w
' e, z. }6 }. o# E: ]update-credibility-ijl

" [1 ^# ?1 }# j: e9 y  p5 o/ B# o' D; H4 w3 J
update-credibility-list0 C' C& i' e! Y4 l3 o
! d3 y0 e2 X2 h1 j4 c8 Q$ c# ]
4 ?- V- N. H' C* l
update-global-reputation-list

0 a) k* u7 Q- ?9 A7 V6 R
* h: k: C4 A$ X4 {# D/ @poll-class

( \2 M( x) g8 q
/ t: a- F; b3 s1 v" F1 Cget-color
, i! F7 n& Q2 d% }
( F# C6 Q2 ^& Q, q
]]1 i7 _- }1 ~$ _9 v

( a& r  d1 x8 f' F- h% L;;
如果所得的信任度满足条件,则进行交易5 i3 M$ L+ U4 E& f2 o
0 j) t& w' h: B% c
[
2 z2 ?7 O: W. o  @
$ R6 H9 R3 p6 v- F3 [
rt random 360

% U4 V. w8 q) N, y1 R" F- K
* K. W- c$ h0 a; kfd 1
9 ?- N$ R* j( ?0 L

. G: D- m7 i9 S9 s+ w]
: l& {4 U0 \3 L5 U* z/ z

5 A* H+ k- [! dend

4 G( g: ?1 Q( w/ p( @* r3 Z. r  u% e' {3 s; ^& v! L: [3 n' l4 a. `! V
to do-trust 6 X1 @" y+ i1 e, t6 G+ g& J- O4 y
set trust-ok False
) Y! u3 {( V& z& r- j+ P' g
$ r# J& K/ K4 M7 m

0 L' a' |: _7 A& H' Rlet max-trade-times 0& R7 ~( w: G/ b$ {
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]5 h0 ]" y8 O% [4 L; o$ h! }
let max-trade-money 0+ o; G+ u  |6 I& Z, Z! G0 _' U
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]7 Z. Y4 C1 z& X' k5 _* {" A
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 n1 h8 R; Y) V! x/ c) I  }8 _' X+ {5 z3 ]/ F
  P6 V3 j/ g5 f& l$ W8 Y) n) K: q& y
get-global-proportion% u1 I2 h( _7 Y* |8 L: i# [
let trust-value
) w, s, ~( l3 K4 |7 Elocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
$ R: s# B& b2 E
if(trust-value > trade-trust-value)0 F2 Y9 u: G9 F( D. C
[set trust-ok true]
1 ?# |! P4 R3 D5 k, `1 i) ~end7 o5 @& I6 n" J) Q1 r1 L

+ d6 Y# [$ v1 B$ ^to get-global-proportion4 D% J  \+ H% G5 f9 f
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3), p3 w1 b; F2 O5 T9 o% q8 e
[set global-proportion 0]
6 k# c: t# t% R) M5 e1 u[let i 0
3 F+ q/ w# w1 L: @- O4 \let sum-money 0
! o% X: j5 Y. I- p$ X* ]while[ i < people]
0 C1 }  R/ W% @$ F% _7 F5 ^6 |[. Y3 k6 I. o3 v) g* V/ |
if( length (item i7 h- x# \4 Y2 W+ F" M
[trade-record-all] of customer) > 3 )

4 L& f' C2 J" |* o1 I2 `# v3 Q* b[
0 ~2 X, U2 ~5 Z+ X/ u& pset sum-money (sum-money + item 2(item i [trade-record-all] of myself)); a1 s6 T6 r" z) j
]
% {- z. W, Y9 X]
! b* o9 D/ z' ~8 p) B; ]' ulet j 0
6 K" u; @/ m& t& ulet note 0, Q$ T+ U/ O  s6 a: V4 ]) O, G7 r, M$ V
while[ j < people]% p5 e/ e: ]' @  D
[
% P' Q3 `. u  @8 I2 W9 U0 }9 k# Sif( length (item i
  L4 p# q% l) r8 G' g[trade-record-all] of customer) > 3 )

- _+ c+ X7 K7 C$ i[
5 b0 d* M( q5 J( vifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)# b3 H# n& m2 H  D2 h* {$ t% y0 O
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]/ S8 k4 Z+ h& b
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]& U) U( p2 f, N( L9 ]
]
  Q  v2 m2 i( E! X' d( }]. \; D7 f" y! t+ O
set global-proportion note
0 _$ e7 E5 H+ c+ p( s8 P2 }5 c6 \]
1 z* t8 U8 O" M2 @end% E& l, a# e, y2 ^$ r9 n9 O' `: |

9 V6 M+ }( P) z% g$ k7 Oto do-trade: m' l& `7 V. C3 W( `
;;
这个过程实际上是给双方作出评价的过程
; s3 p+ d( ~5 r- a: y0 B/ lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价) Y  ~; d7 O( P) M5 V- B
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价3 o; n  v1 h: U# R) Y" T9 c
set trade-record-current lput(timer) trade-record-current
; ^9 Y- n0 J. _* Q# a;;
评价时间
/ W/ K& U. r$ v# J) mask myself [
# I( I/ J' B, \1 w2 E6 W6 _. F) Aupdate-local-reputation) x: _! u1 [8 {1 _6 j% x
set trade-record-current lput([local-reputation] of myself) trade-record-current9 }. b4 a" v( E6 u- [1 w
]
7 m0 L3 }- F$ r6 F' h; T9 w! rset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
4 x. A' v5 x3 U8 e+ R;;
将此次交易的记录加入到trade-record-one
! m  a6 S+ D' z6 U8 Y6 nset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
) a$ _' \0 t1 Tlet note (item 2 trade-record-current )" W) j5 G1 M/ [: m# V
set trade-record-current1 `/ r) n# b5 M8 ~& O' _% _: E
(replace-item 2 trade-record-current (item 3 trade-record-current))
0 Z) _4 |: Z; p" R2 P
set trade-record-current
, S: j9 `& w% }) i1 V8 O" N- M(replace-item 3 trade-record-current note)
9 y0 i+ ]% T/ s2 I% F7 P
4 b, H+ U3 ~1 g, F

2 E4 f* `4 ]" ~( j5 {# g" o; aask customer [7 F) j# Z# `$ A0 K% l) M& N
update-local-reputation  N  W' V. o9 q% v# T( r( T
set trade-record-current/ A9 A) q# A+ M  L  L. X2 c+ J
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
* |9 W1 n: t! N0 b% W5 W8 t
]
( V- ]5 v5 V7 [" x, \; B3 H: a# I, z8 U/ B6 X. ]3 B& j- A
. c# q1 g8 t* m' T$ U& n. P
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
. `& n5 E" E, W/ W+ c' E
4 G. O* O& S% N1 h+ g
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
+ K7 b+ I/ e, @# |4 x;;
将此次交易的记录加入到customertrade-record-all
+ W; e! [* I: s" O  a0 E3 j* _end$ @7 @& ]! J1 S0 g+ V
' s" W; z0 q! W  e
to update-local-reputation
. ]6 o& Y$ w5 [" n/ tset [trade-record-one-len] of myself length [trade-record-one] of myself
) x! d' F) F% N- x! j
) [# K  t! D# z4 O( d" Z7 k2 @( J, w
;;if [trade-record-one-len] of myself > 3

; z" M3 L9 j+ T9 _update-neighbor-total
; O* A2 K2 |" w: l. t; C  y;;
更新邻居节点的数目,在此进行7 u8 b$ a' j* s3 W6 i
let i 3- v( A+ _1 u1 i7 [
let sum-time 0
) U6 @. m1 l+ X& F7 ~while[i < [trade-record-one-len] of myself]$ I  X0 X& x+ x
[
5 W) }' t6 b! e, {set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )" d! N; s1 }; D; z3 `& z
set i' z6 @+ Z4 e$ e+ d  I$ K) _( K: b
( i + 1)
4 f) s" @# v9 a3 T6 K+ q
]
+ ~9 b% J9 T- l. P) f+ Qlet j 3
. |& o/ e2 L9 \0 V' m% z- ]let sum-money 0; @, J1 A2 ?# q- f# Y; b; {
while[j < [trade-record-one-len] of myself]
1 t' [# e% q" q6 Y! u$ _[
5 w4 u& w' i; H" [; h6 bset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)* r2 ]8 F, [& d) o! i
set j, {! D! T1 I& W3 @1 N  a, f
( j + 1)

. j+ N: o7 t& g# z8 }9 k$ s7 N], L, A5 a( O4 ~; a1 p
let k 3: }% s2 v1 w) o/ N- C# s/ B
let power 0) K$ S3 E2 ^! N. `3 A( V1 e
let local 0
' O3 N% T& O7 B  o: Y. U7 Owhile [k <[trade-record-one-len] of myself]: j1 {3 c* A& S+ K& l0 L
[
1 D( i: s% g9 o: P/ O2 Dset 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) 6 _7 ?1 A/ ?1 P6 J9 Y6 U' S* C
set k (k + 1)* L& K1 ?  M4 u& {# o
]
, `2 Z1 S: X7 P4 jset [local-reputation] of myself (local)
) F  X/ {0 Z( Iend0 |( \% v# f* E& n0 `; D
2 k, R4 ~( x. @* X/ F5 {. G
to update-neighbor-total9 M9 h0 o/ T3 l( O( w# K  Q" C" {" J) ]

( f3 X# |3 T) m8 m8 r: A$ dif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
0 U+ g! C9 q  U( V* i" w
7 q, T) j+ ?" ?0 e: ?

' t* S% s% |! j* ?  vend
7 K! U; c5 p9 t  s7 R) |3 P; J& l: H2 R" h8 B4 I
to update-credibility-ijl ( `8 b( B3 x3 N- p
/ n; r7 H# j7 |4 z
;;
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。
2 `! k$ H3 G1 j. M% H9 Llet l 0
; K' S7 u* y- e& `while[ l < people ]8 A" C$ L- z/ B" ~
;;
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
; b  h1 j' T6 s# T) i- [[4 g  ?& ~% U' E  u2 ^' ~3 P
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
4 h/ E, ^/ \" \3 V! @! Hif (trade-record-one-j-l-len > 3)4 }4 V% w9 J: |! d+ y8 i- o2 s& S2 c
[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
0 Q' Y8 `+ {0 F( c' Alet i 3
7 y  v- M& x% w% ^: I& e8 {; ilet sum-time 05 D- P6 _$ {' }( Z
while[i < trade-record-one-len]/ z/ X8 O" G/ Y+ |0 A, c
[
' e+ ^, ^' |- J) \4 Iset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
( g8 C8 ?( @4 n( iset i
: _- y! P6 T" X; X. z4 s7 u( i + 1)

" m# a& v/ S8 ^% s0 `]* x' P9 b( w, K) m
let credibility-i-j-l 0
/ O7 B# i; F( N/ v' V0 S" u;;i
评价(jjl的评价)  u. H$ t- H, y5 P
let j 3! _. S& Q& g- a( w
let k 4' R0 V* J1 w$ E( @* N2 x
while[j < trade-record-one-len]
* y- F3 x' ~( Y6 n6 Z. H$ m[
2 ~! ~  a2 B/ W; }" Cwhile [((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+ g5 ?. _/ s! m
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)2 p$ E( g3 E# O' L# }4 T6 ~
set j! _! F2 u7 H3 z: O2 X- {- L4 N
( j + 1)
9 t2 s3 _; h+ ]- F. N
]
& K  L0 c. {$ y+ ]8 l  K0 t, L' A4 lset [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 ))' }; K  D+ J* S# P$ G7 Q" o' Y

  q! m; y& K9 \  R$ f

5 U- {4 P* w6 _) a8 o' _9 [) p/ d; f6 alet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))+ U! h( e' `$ ~# J8 ]0 \9 y- z+ ^+ G, r
;;
及时更新il的评价质量的评价6 y6 t( [8 y3 |& y1 i3 M
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" J; C7 P* ?, s+ s- jset l (l + 1)
; a: s" a3 F, C]
, a0 I. v& e2 X- }7 hend1 Z, R) l2 G" V1 E( Z

. A- F: S3 L5 s- M+ h6 Dto update-credibility-list1 w5 A) q* K  k0 s! h0 H$ {
let i 0$ O( N% D( r; D% J5 R! n
while[i < people]4 z! n9 W) S; X% g- w
[
+ o: l( ^/ C/ U0 d2 [let j 0
! g" h! M2 L$ e, m( g" Hlet note 0' A* ]3 _( |, o8 B) `
let k 01 _6 j! q4 s) Z! j* r) m4 Z
;;
计作出过评价的邻居节点的数目# z- k  `. }" U! G5 }1 R0 O
while[j < people]- p: R  C# L3 |* o
[) r, s; h) l0 z! K, k
if (item j( [credibility] of turtle (i + 1)) != -1)
2 w  T4 A1 @9 V# M0 s) D; R;;
判断是否给本turtle的评价质量做出过评价的节点2 g8 r2 f# C6 O0 B8 @! i
[set note (note + item j ([credibility]of turtle (i + 1)))
4 Q# b2 F4 A. s;;*(exp (-(people - 2)))/(people - 2))]
5 C* f: J' g5 z8 c
set k (k + 1)
% \$ x4 p8 e2 d3 O- K]. i0 j  S7 Z8 E" L! B% [
set j (j + 1)
" `7 I% @  Y& I: D. F]
% ]" h& t) R& k& N- J5 |set note (note *(exp (- (1 / k)))/ k)" K" S" s; H* R; u) k0 v: k
set credibility-list (replace-item i credibility-list note)2 T' P- X( k: Q3 v# O
set i (i + 1)
# j1 l- c5 `, Q5 J7 u+ {]+ d2 E' n1 k8 h$ V/ }$ G
end
( R- _$ v: s; a" D9 \8 J
. c5 q( X, U! j6 a) y. _to update-global-reputation-list- Q( M- i$ }% k2 Y
let j 0; P( r" S# C  h. b/ L. z, \* _0 e. i
while[j < people]
1 f0 c* Q0 l& E0 E2 Z) o[1 G: `& x: |2 E" d; ~1 O& b
let new 0. i5 J: s' S3 d# G0 A- k) u% n2 N' p
;;
暂存新的一个全局声誉/ Z( ~' B3 S3 p# S  I
let i 0
! G7 ?2 O2 _1 }9 D0 T  S6 o( tlet sum-money 0. h& G9 d5 b6 m% Y+ q" J0 L
let credibility-money 0' F5 H# F# E- t) |
while [i < people]
2 u# Z! v; O3 Q, Q+ X/ r; b[- ~* c  N0 Y- J+ X/ ^, C7 n
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))+ g& ~: T2 D) r6 `' N. j4 }
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& f; j+ {- [, N& Aset i (i + 1)
# L3 S, o" X) X: []" J9 ]0 X* H1 Q( |7 g
let k 0( ^  l% K1 X1 ]' G( t; O
let new1 0
7 J1 P: X; b. m8 Y9 j* R: k# m# w4 p6 c  rwhile [k < people]) a! [  \5 a8 F1 m; ~! o! Y
[9 }) u% O! H* L, b: Q# |! w7 O' N1 Y
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)
$ F5 w3 G# H1 n6 `3 Wset k (k + 1)
$ G* H) Y: h8 ]4 i]$ V# N0 d2 [  d2 X- \) C
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) $ C! F+ f: V5 n$ M6 E
set global-reputation-list (replace-item j global-reputation-list new)3 m& \& ]/ b7 U  ?6 s# n
set j (j + 1)
6 D* {4 v% o2 A+ r  I6 v2 ^, [4 v]& y- H" k# f3 e0 X3 @* v
end! A! L5 v3 R0 a* E: W; m1 q
+ F. K# C7 j/ b2 E8 o* [4 h

- V7 ]# s, \, L& s5 J+ d" a( {4 P2 Z+ U: @4 W
to get-color1 `# j) U  J% a6 V) g  D5 P+ Q

: m/ a4 u5 c, P1 C; U$ Mset color blue
, j6 h# T# @* x+ n2 J$ n: G* w
end1 x7 Z' t1 \. `4 {

4 V% v6 S; U6 L  a- Y- o( Fto poll-class
9 f7 H* e6 j; {" Z8 Q  [end6 P) \& l8 \7 e2 y

# W, E. p4 n: y8 y6 i; t. k; g. kto setup-plot1
4 ^& ^0 [% v) V1 v& I4 g3 r. r2 h+ h" |: s$ i, p1 J
set-current-plot "Trends-of-Local-reputation"
- T  x; `: j3 f# b, f; G: z
; \  Q  b: r( e% k+ A* m' K
set-plot-x-range 0 xmax
' a9 X) c6 I# D2 w
& P) [3 z+ O. P, V; m
set-plot-y-range 0.0 ymax

& m6 B# S; t2 t4 jend
2 t3 I; o  G1 _/ k9 e# p) {7 k# J- g4 X3 q4 h6 D$ z5 ]- m
to setup-plot24 M: q- Z0 k8 u; f, j
% T6 u- s% g5 Z( L
set-current-plot "Trends-of-global-reputation"

. G( V: Z2 J' z' V% u
5 e, ]6 `7 y& N6 U, C! N% R8 l7 iset-plot-x-range 0 xmax
0 U' q: v% Z' Y

6 b* A! J* j* b; q. ?7 Cset-plot-y-range 0.0 ymax

7 r  F# L4 e! Q8 ]! Oend0 e! a" S& P) @) ]# }

  x* F; e% ^9 ^- N  V/ Ito setup-plot3/ u4 S9 H9 i+ r9 h/ B( d9 J) L

1 R% y$ K* J! z* [set-current-plot "Trends-of-credibility"

) w( ^8 B+ `4 b. G5 E" q0 m: ^) h3 y4 n- y; v( }* Z+ ^- H9 O
set-plot-x-range 0 xmax
2 H. J; T) X/ Q8 g8 ~/ Q) ]

$ |" A8 l0 H, j' F6 Z+ [3 Fset-plot-y-range 0.0 ymax

# e8 T4 j( i5 \4 q. o* nend
2 ~2 l/ g9 Y/ j. J0 C- Z* S3 s8 ]. ?, K( h$ L
to do-plots  d' t/ F2 g) w3 l- m4 V% B
set-current-plot "Trends-of-Local-reputation"; g3 N$ e' R# n8 X* Y3 B5 h% q
set-current-plot-pen "Honest service"
! l# e0 Z" J) O* hend% {1 B( w8 R0 c0 J' y1 L

; ^3 n1 @. q6 u: ?7 ^2 L- m[ 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.
  z% D6 }$ t; g1 ^8 @0 M
, d4 F$ T/ s5 g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, 2026-7-4 12:59 , Processed in 0.020953 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