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: 9963|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:
! n6 H' ~0 `4 n8 N/ d2 B, l) Sto do-business ! ~, R% ~2 {! {) m3 O
rt random 360
7 V4 ]" ]" o# Q3 ~- i9 C7 e fd 1# @3 o' Y* k7 o7 X' t
ifelse(other turtles-here != nobody)[$ o- F; u1 K1 l: ]; s: ~
   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.
2 a9 t6 z5 K4 _6 k: S   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ) V. }/ v+ I0 m* i# U
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
9 |7 K- X1 f2 c; g& ^0 L# s   set [trade-record-one-len] of self length [trade-record-one] of self6 Q4 n+ b' \9 x0 R& a7 t
   set trade-record-current( list (timer) (random money-upper-limit))
+ I" X4 j/ ^8 z. ~: p9 A- ?: o% _  v" ]2 q2 z/ U7 F8 z  Y: N, d! X. _3 e
问题的提示如下:4 R) N, ~8 R/ D! D' I  U
; j6 a1 F1 w- t  `7 j; v/ s& \
error while turtle 50 running OF in procedure DO-BUSINESS, B2 s  P% a( |; a& N6 i- S/ k, T
  called by procedure GO' W7 V5 M. Y, d/ `* ]/ z; [7 `" f3 y
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
- Q/ W0 I, J. `* ?2 F  Z
(halted running of go)2 {+ Z; U8 ^- N5 l

3 T# W$ Z% [7 I; `) K$ 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~~
5 {2 i; s2 z8 \5 X8 q; A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 r% A6 v3 L' o+ x4 {5 ?
globals[
9 `: D4 K& ?  q! qxmax
# g; }$ B$ f3 u+ ]; R8 w5 R) V3 yymax1 c% o* p: ?- `3 C, c8 H% D* i! ^5 b1 s
global-reputation-list
( |7 k4 B( d6 M1 D6 _( q8 |: f9 q
1 Y* Q4 ]1 X8 {( Z" S; E& b6 s' H7 u7 l;;
每一个turtle的全局声誉都存在此LIST9 X  z# {4 T$ j7 E+ g; B6 m9 }3 e6 K
credibility-list. q: C1 R# _; x
;;
每一个turtle的评价可信度
/ n5 D6 A" j' x% Nhonest-service$ W$ z, u" K& k& C2 b
unhonest-service% V! j2 I% z7 |
oscillation  L) m' g: Y" ~$ z
rand-dynamic
- k( x3 D6 N% J]
; t  C9 H& @7 i, D$ U, J
( |+ y4 ?+ ]9 F  o- P: F; j; eturtles-own[' {  C' `# D! o  \
trade-record-all
6 S+ Z7 x# `# i) h6 f. A! ?3 B;;a list of lists,
trade-record-one组成/ Y% p' R7 x! K* ^4 |, @; `% p
trade-record-one
. t% |, t) `- F;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录/ x1 {" c$ U9 G
, V$ L# P6 a" K7 O
;;[
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]]
! F$ s4 y& r: M& S( ?+ dtrade-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]
" O1 U" }" Z' ~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# }. {* b- K# F+ Y# g) q4 F
neighbor-total
) Y5 U3 n2 ^& s( G;;
记录该turtle的邻居节点的数目
. E  e* [4 C1 p8 i$ Vtrade-time
. P' r% ~$ [. s" D( F3 ?! h;;
当前发生交易的turtle的交易时间0 X$ v2 ~: a* e8 n
appraise-give7 L" {9 g" [/ S8 \2 Y& a
;;
当前发生交易时给出的评价) M: m% F. k% x8 _! B+ [& Z# H
appraise-receive1 i7 p8 V$ Z2 w" t9 l6 t3 _
;;
当前发生交易时收到的评价% k7 K& c( n4 C" @% b& Y
appraise-time
9 Y5 |) e5 i# N4 X5 X;;
当前发生交易时的评价时间
5 P2 B- k9 e& }& x& klocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
) b4 Q! {2 o/ Dtrade-times-total, K7 F8 i+ ~) v) s& q" I
;;
与当前turtle的交易总次数" C7 v" t- H! f* g3 F  @+ ?3 A
trade-money-total  ?; y' I! d0 q. C
;;
与当前turtle的交易总金额7 B* m* {4 H% q
local-reputation
" A1 |9 a: r8 H# m. Oglobal-reputation9 k! z( ?$ k$ {8 f1 E
credibility7 g( o+ R- W: f) ]/ w
;;
评价可信度,每次交易后都需要更新
2 z2 z% y! ^6 K+ G; b3 Icredibility-all
/ \( [% c8 r2 ~2 a9 i;;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
' u8 k! u3 Y4 D* @  |% q6 w1 \: P" b) o1 a, X& O2 W$ D, r
;;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0.56 I' `2 n3 a. j4 S6 H9 w
credibility-one! C  F; B% N+ k0 w
;;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
+ w# v' f2 U9 D4 L6 X1 Wglobal-proportion( A. J/ A5 l& \* g0 _: B2 z- X
customer
0 F8 n2 I3 l8 d% Ncustomer-no
' W& }8 a. A/ ?* \trust-ok
6 L7 p- Z8 H6 R2 d4 i( Z" gtrade-record-one-len;;trade-record-one的长度- A! b0 Y! T* T3 a) v1 P$ s1 _
]- ~' n2 z1 n8 X1 w9 i: h/ F
) p( P2 f7 o  f0 l9 \6 q
;;setup procedure
5 n5 u1 V" J$ S# L6 `& t  W# r# j# K  n4 g
to setup7 N( Z1 ^& |; l
2 S& c& a4 q. X; p. U
ca

+ g$ @; B- Q: T" \
3 B* W0 S, \# |2 T9 ^3 c8 binitialize-settings
1 ~* w! I1 T9 h( z

0 D% q3 U3 T" x1 I- t8 @. V! g! ocrt people [setup-turtles]

* D4 _, S9 {2 v
) m) o  p5 Z) \5 R" xreset-timer
7 U! k* _( x4 j. ?- J9 C8 z

: O9 `! T  o& z9 Rpoll-class
1 J$ u* `* ]* m9 ^" h
8 e& A+ m) `5 z+ M* v
setup-plots
7 B, Q' G; }: u) o- T$ f! e

  `2 f, {7 a9 \0 U' q( \do-plots
- K  }" [9 K- H3 V* d* I
end# q, [  B' m8 b; ]7 i

& [; _# U+ _! h+ l( _) Ito initialize-settings9 ~+ V0 x% b9 u  C
& _& d; n/ _$ j3 y0 J- }: D
set global-reputation-list []
, x. T0 u/ P0 G5 s
' _! ]: a9 S* q3 z
set credibility-list n-values people [0.5]
# m# B9 Q. b* n+ a, y( f. L! Y0 Y

7 O  U% g2 u7 x6 c  y' a9 Eset honest-service 0

! I. M6 v5 V8 f4 U
1 K/ H& L5 }9 u3 N/ G1 j5 k. rset unhonest-service 0

' |7 a' w% m0 }5 L* E9 }  d: L& Y2 ~4 Z; ]
set oscillation 0
. o: z1 F- ?: Z7 h* P! v
# W6 e( v. j, u2 T7 k5 C
set rand-dynamic 0

2 _, E2 H5 ]( [, Tend
; a+ X9 {/ f+ [; u: Y7 ]7 u7 @$ n, P" [+ \) T$ Z0 u0 h! Z6 K+ J: l
to setup-turtles
0 `9 t# }/ d$ v* Wset shape "person"
5 ]# a, p" |' |: ]1 C: J' u2 v% bsetxy random-xcor random-ycor4 w- o5 v$ h7 l  M7 H  f+ v, |: S# [
set trade-record-one []
5 f& k5 a: ~+ O  N5 ?/ ]
- c  L3 Q6 x+ w0 ]$ x  J
set trade-record-all n-values people [(list (? + 1) 0 0)] 0 P. O( I) @+ J
3 v; X+ T  n- L$ l7 i6 S
set trade-record-current []- H! S/ T0 a6 Y0 U
set credibility-receive []
0 _$ _9 a  w3 q5 M4 S$ Y; Aset local-reputation 0.58 X, f; o0 u. Y0 P( W
set neighbor-total 0
3 Q" i( d  P" s3 v- l6 e; p2 C7 {set trade-times-total 0( _0 ]7 X/ Y4 ?% q7 k: M& F7 j1 U
set trade-money-total 0" Q8 p  ~& b$ u1 X
set customer nobody# n: ~; c3 n" w, f& t2 u9 T
set credibility-all n-values people [creat-credibility]6 f5 s# G" ]' ?8 P  R
set credibility n-values people [-1]
8 R0 U% z2 _5 T- z6 Y) x8 vget-color" m6 l6 s: O. N% x9 |: S8 y+ e- ~
. V1 q! ]# ]* R2 f) q
end2 }$ K4 }' o0 ~' i$ Y
, ]  X' {' R  I1 T" f' I: X
to-report creat-credibility
0 F& D  k* D' b, {report n-values people [0.5]8 W& B: w5 r- F( U
end* @! l' i2 O4 B0 u; o  D+ y4 m" c
' X" T6 V1 q( u4 G( n$ s$ T
to setup-plots: i$ l0 g- v( D& I
& I5 _0 X3 S9 i: o+ a
set xmax 30
! G4 {, {9 {. ~& w  N

3 q/ X/ t* E! h. t6 \, hset ymax 1.0

* k- u0 ~/ h' G; Y
: b* d5 U- Y9 j) A" h3 Iclear-all-plots
  w* T* y- e1 S) G; b

: S4 V9 Y$ j; psetup-plot1
" C# O* l0 s0 M* b. p: w$ Z

4 c- q8 o  ?* f/ e4 T9 r# bsetup-plot2

! J7 V& r  {7 e: p" r; r  e5 B0 n+ I/ a8 w+ V3 W0 y
setup-plot3
% y$ r4 ~# a3 N
end
/ V, }2 z0 e- E' S) ?& s6 H" ^. v0 f" A9 \  `  `
;;run time procedures. A5 I- y% e5 M' P; Z

$ a( a: G( ~" pto go* X3 u; a# I, |$ [, g9 N) t$ J
4 _; g0 R: c! A2 p6 E
ask turtles [do-business]
+ ?" i# o% X, P" \. j
end7 Y0 ]* p9 o! T+ A
% e6 y7 w2 D! O$ U! o, O
to do-business
/ s0 B  e$ L) u* [" k6 G$ L

5 V) d* b3 H- i) T- f, ?' [) p! l0 y0 ]. a/ D
rt random 360

2 Z" ^% V$ H. t7 @* C8 f' |( X& g* r
$ h- [1 r7 h: G, d1 i, q6 h, u6 |' {fd 1

1 w$ _. X3 J+ R, H* v
. ?  |) C# W( F( l3 B3 tifelse(other turtles-here != nobody)[
1 x+ s+ g! h) u+ P3 E+ R
  ?2 s* P, W8 Z6 ?  G2 Q0 H% C
set customer one-of other turtles-here
3 o0 O' Q6 U6 t

* ^7 {( V% V* S/ d;; set [customer] of customer myself
+ ^/ L1 g* t# I( v  _! c

# x0 }2 w: L. p+ yset [trade-record-one] of self item (([who] of customer) - 1)$ e; U: `7 a# W6 ~: n: ~( ?: N! y
[trade-record-all]of self
5 \/ g% c; o+ n( e7 T;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

1 [7 C' z( K8 ~8 \7 A$ S$ e/ R2 v; K- B& w( `( L/ e5 \
set [trade-record-one] of customer item (([who] of self) - 1)
1 S+ f# v8 r& H[trade-record-all]of customer

+ D- R0 Z5 j5 F( j/ U8 a+ w4 P& P, Q! B3 Y4 M
set [trade-record-one-len] of self length [trade-record-one] of self

9 I% f( m: l8 Z% W
8 S' W/ S- B* G2 }1 uset trade-record-current( list (timer) (random money-upper-limit))

. B( X5 @( N, y! r4 l. i" G+ k6 W# w+ ~* u- j. D
ask self [do-trust]
$ D- j) I/ K# B7 V% Q9 b;;
先求ij的信任度
/ T4 c  t2 {1 \: p
$ I$ S# d" h. ~$ M' d9 _if ([trust-ok] of self)
* f0 U" J1 N5 L;;
根据ij的信任度来决定是否与j进行交易[
* E# ]4 ?1 T$ M5 E% A2 {ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
) Z9 t; M: D. |0 d/ R
) f! D6 Z  O+ y( z# e[
. s* G* T. x' k: }- M, g

5 V- Q9 I) k( z, X$ j  ^do-trade
' H* ]- U" Z: B- g6 T
& C+ }# Y* I! @" }1 y0 ?+ s0 N* K
update-credibility-ijl

7 b# H, _* H* G; E, ]
! J) H# x- j! p. J; tupdate-credibility-list
/ L6 j- k2 @: n9 `) ~

' R+ D# U/ }3 o7 ]! {
* B" G- p0 B0 m. c0 yupdate-global-reputation-list
9 |0 ]2 L3 f: H7 M) G
" p' Y. J6 g% M6 q+ B
poll-class

% j! t$ P* R* y+ `/ p9 R
6 G( Q- C1 V" ~& [" ^1 Fget-color

: O* O' a/ R( G. O! S
$ P& s2 v! q- O: q* l" C1 h6 T$ Q/ ^]]. H9 z* |$ ~; c( O

( S+ r  A& e' _3 W;;
如果所得的信任度满足条件,则进行交易& s% g! L8 z* E  m

5 L4 Y: N5 V5 V[

( V( V+ q; r; a) R/ V/ B+ v1 ~3 N! P/ g2 Y
rt random 360

. F3 T  W# f8 l5 e
+ F$ y! I3 r1 {1 W2 Ifd 1

- }; N4 P% M+ w9 `5 L6 |
& g& r9 t7 ^  u' h]
) G7 L4 c4 {7 z/ d

7 i) t! j7 [! l' tend

6 X  P5 k) C6 b: K: M3 {! t6 K$ N0 j( f
to do-trust
6 ~* N0 M" Y2 g2 j5 Yset trust-ok False: t# f9 V9 l. }$ D. U, `
' [1 k0 V9 j8 K2 d

) l2 l- s6 J* I' U. {( Ylet max-trade-times 0
6 m" }3 S" J" M6 D' Y( f; Fforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]. J3 E, M4 y5 i) B- L5 p' o
let max-trade-money 09 K9 m8 g& _2 c7 V4 o4 {
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]; p2 V9 l4 i% i$ a9 V  R
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))& d0 y4 [6 W0 }) M" ]6 O
* C$ _& p$ e% @4 a
4 f3 _" N) z* ~/ m$ ~2 @
get-global-proportion
6 u4 c% x/ c( q; ^; ]* o( blet trust-value: r* [: @1 J3 z6 d& D
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)
" x1 g, F. e. ~8 |4 U- B
if(trust-value > trade-trust-value)3 [$ j, V8 c9 [
[set trust-ok true]/ L5 e! H4 G1 N& m9 U4 m% R
end& D% y% Q& l% J0 `5 k
6 U" [0 C" X. y" h, [
to get-global-proportion
  |1 _/ L& x$ {# @0 e/ F: yifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
5 n! R8 K+ n; K9 [[set global-proportion 0]  y; c2 w6 H* m/ E; y
[let i 0
+ Z% z+ M5 `" F) h% `  hlet sum-money 04 k, Y5 t$ N  R* h* u" s: h. m; c
while[ i < people]
$ z6 ]1 y" H: j' f* S3 {; i+ i[
" m" l) T8 E+ f' j$ w+ d5 d+ p0 eif( length (item i
) ]9 a3 B% ]2 {( J4 Q% |7 |0 j6 g[trade-record-all] of customer) > 3 )
. h0 Q) {8 W0 Q4 ^, t) V5 Z8 y
[- M! C! ~$ T  Y
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
4 ^2 L3 G$ g3 c* I/ r+ p: ^]
+ S6 E1 V4 n3 |( Y* f* \]7 ~2 _2 z9 [4 Y, P
let j 0
9 C+ G( x3 L' Ylet note 0
7 v( j# P, f2 s0 ?  ]5 E& Zwhile[ j < people]- t% a0 ^3 x7 u" u; h
[0 K6 @' W/ k( n: U  l& U
if( length (item i9 c( k) j% U+ `- v# T' F3 Q# }4 p
[trade-record-all] of customer) > 3 )

2 t7 M& ?9 ]9 u: @[
6 ]# p& _% a7 Q3 J+ Yifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)* C  z9 _6 L; h+ ]' j" J' D
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
+ j& I" `3 B( K% i8 q[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]6 M& L- l) I# N$ D6 Q. H' h/ O8 G
]
7 }3 _  J8 s$ e% L]
* }" h! x# F- f6 ]set global-proportion note( a' S6 P8 j" s' k/ H5 M
]
- c( B% d% ?( b4 I$ w5 |+ nend
" L( e; x+ r( R# S8 S
9 S4 x2 d1 U) o5 s$ x, M& dto do-trade1 j2 X% Q8 x, q- A, @: ~
;;
这个过程实际上是给双方作出评价的过程
, h$ g! v  h  {: Q" _& L' Y6 O& E  d4 m, Uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
4 \3 ]  e' R2 Q5 vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价) z- c2 c; I: a+ S3 ]% |0 ]3 r
set trade-record-current lput(timer) trade-record-current0 @4 d# S" @4 Q, m$ Q0 r" C
;;
评价时间
0 w1 [# x7 b( L" Eask myself [) X1 I  m  K0 g1 u7 \9 n
update-local-reputation* Z/ o! \3 }8 n  E$ S' ]
set trade-record-current lput([local-reputation] of myself) trade-record-current, R; @# [5 Z- O% v
]9 n" t# f7 p) \9 u
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
- E# c3 ~' U6 y% g;;
将此次交易的记录加入到trade-record-one) y0 z9 W  f" Y  z% n
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself): A! V! D1 [: @8 Y- n; A
let note (item 2 trade-record-current )
; U* V3 e- K+ b" H0 D: ~set trade-record-current5 W1 H) A: [& b% p  a8 E
(replace-item 2 trade-record-current (item 3 trade-record-current))
/ N0 z) P; V9 L" j4 h+ |0 N( ]
set trade-record-current
# g& y6 Y# i9 G# _8 A9 z(replace-item 3 trade-record-current note)$ R  \, {! C  b4 u8 H* j

* L0 u: |! h3 ~2 _
6 |+ ~5 A0 W& R( U
ask customer [
. [( e. k' ?* `4 p8 Q: nupdate-local-reputation
- x- O5 m+ d3 E0 t) uset trade-record-current
, Q) e# I0 T/ I) ^* L* ~( K4 A8 S(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

# _! f2 }/ R6 [8 m+ R]
) H' w7 {) P' l' }" B' \" z" G
" H- i2 C9 j  D# R
: q2 y- ]  c* H7 u* M
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! g+ v" j+ ^- g9 V' `' h

* H# z) L6 ^2 Y% lset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
. [& S5 H: |4 }$ I1 W/ W8 d' `7 g;;
将此次交易的记录加入到customertrade-record-all
3 V! z1 H% c1 ~0 x, v8 d$ aend
; P, `) L, j% C0 h/ X
4 H8 l  u- n! y6 M5 \& s; Eto update-local-reputation
* t% y& q! R* ?5 b! a' }set [trade-record-one-len] of myself length [trade-record-one] of myself# a4 B8 u0 [$ d0 o" P

$ p, P$ r) q& D8 c0 j$ a  W' W% ?) j2 [/ u- B7 T
;;if [trade-record-one-len] of myself > 3

6 H+ c' q) ?* }$ M1 T, Oupdate-neighbor-total
' ?& M" B1 Y1 E3 E- _" k;;
更新邻居节点的数目,在此进行
$ X. C0 |) i# X. h3 r" ~let i 3' b% s# y2 P/ i4 Z; J
let sum-time 0
2 c# a4 n; l$ H5 x6 I3 Qwhile[i < [trade-record-one-len] of myself]
  }, x/ w5 g) ]+ K[! o) C  I1 O9 @! C) ~/ Y5 Z
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )6 r6 D3 b1 q" S: h
set i: K. {" y! W1 l% L3 d$ h
( i + 1)

- }0 D, C8 M2 N$ u- e8 d]
- @4 G4 k4 j( ?1 X7 slet j 31 d% ^( F( ^/ \6 U- }1 \
let sum-money 0
% ]' T% p* U6 r, y9 t# z# ewhile[j < [trade-record-one-len] of myself]/ V* g! L3 |6 Q0 J, F3 N4 a
[! p4 {, \% w  P; N* B6 Y
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)  c4 x7 f# h4 T- `2 i5 p
set j
9 x. z) F! C& x1 y' a( j + 1)

$ X/ Y3 |4 q$ u$ e: Y]
; t) o8 d; U( h' m- y$ Ulet k 33 R1 ^; P; [/ U% `
let power 0
1 T! o+ l8 \7 }let local 0- S* r2 ~! G! h. h7 F
while [k <[trade-record-one-len] of myself]
4 K! }+ g) r; ?! n& f3 \[
8 Y* b) q$ I4 g& Sset 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)
: o  [  Z7 m2 I2 e0 qset k (k + 1)& I2 o5 ?; m9 W4 P( w  I$ n& J
]# @, q( X5 d) Y3 ]$ W
set [local-reputation] of myself (local)
0 H6 }7 e6 G( b4 P, L; bend
) y% G( T) q$ T6 F7 u
! }. d; c$ k8 M% e( D  dto update-neighbor-total1 x& _" }; g; H# n  C( j2 b0 [

. ]! b. j! |/ j% E" Kif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
! U. o0 n- E' J% v, c$ k. B, }# e# v" D# C" N
1 F4 a. `1 ~/ w4 S( a  ?2 Z' z- o
end
8 s2 `, D- i, G+ w+ f1 H* a- U- Z; H' v
to update-credibility-ijl - p6 z1 J; K% T$ ]& c, X2 _

+ W% l1 ^' y! E( |) b5 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。
  q* V% y0 E  F' O3 P% {6 clet l 04 v. e( _9 X" H3 x) x  ?/ [
while[ l < people ]* g( G8 |3 O- ^. O6 @% Y+ m8 h: 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
5 B& w4 j' T- Y[# E9 A) I$ E( _* a% k! u" u
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)% o% _9 F1 F# ?' O# m% |4 a
if (trade-record-one-j-l-len > 3)
5 W0 C' H3 O, i: `[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/ W: }' m% P0 S, j. v# r
let i 3
3 F+ u9 F, z" ]3 O9 c9 Slet sum-time 0, }# e# E, Z5 K$ l1 A3 `
while[i < trade-record-one-len]0 k4 L! V+ P9 n
[- \6 N' |  a& z( C: @' J
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
1 d* P; ~* P+ q! `7 Dset i
8 C% @9 ?  V! m- N, d* M3 k/ H* p& }# X( i + 1)
  `3 M) D4 ^2 A# y$ T; x
]
. ?# i6 a* q: N" N6 {$ q3 Rlet credibility-i-j-l 0
; H% L: J" }5 j  P( V;;i
评价(jjl的评价)) l. P  k+ N& G" {$ T5 h
let j 37 c$ f! x6 c* I$ Q5 c
let k 4) e" d: ^" g, N: M2 y1 V! H) u) s
while[j < trade-record-one-len]
* @6 k! a0 v2 ^[, S) \$ T4 R1 P' g0 r! \  E: k1 a
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( T$ P% T5 k* ?. A- z( y' U  P
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)
& \6 R1 ?; d) Y& d6 E& \set j
! X- m/ m, x( B4 O3 Z3 ^  f( j + 1)

3 C/ W$ t; E# m  n9 c3 |]. `  p5 O; a$ z! 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 ))2 a% V, d0 m4 {8 V" r7 P4 S

+ H7 L; {2 l& e9 O, j$ w
; u5 x# y5 h6 t& F0 h2 ~6 t; ^
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
, u9 b7 G, Z- d1 V4 w3 ?) y;;
及时更新il的评价质量的评价, s3 M( L) d7 i" R, Z
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]) `3 |+ Y7 s- Y* T' Y' Q% k
set l (l + 1)
* ~* \) n2 N9 x& u, g8 ^! x]
* H; Z; x+ T' {1 t8 d& \end. e! Z5 @! z( K5 k

: {4 I5 p8 Z/ g& u0 U9 K( wto update-credibility-list
. M4 L$ Y. b# u" }* ]- elet i 0
9 S6 A. q9 ]# }% u2 o: Ewhile[i < people]' {$ y6 q0 L. h0 J5 M
[
4 t6 d% H/ _$ n) _$ i# f+ ~let j 0
2 }6 Y( Z3 U' u7 `; B, g. |. ylet note 0
2 ]; [# l4 X* w( [let k 0
8 v! \+ \1 j0 _1 y1 @; N& Z;;
计作出过评价的邻居节点的数目
5 H' @+ I; r) }2 Jwhile[j < people]* V# N: X7 R9 `# I  i
[$ \2 G9 C* J, j, J. y& C) l( H
if (item j( [credibility] of turtle (i + 1)) != -1)
0 G& C- L& ^6 ^. P1 ^;;
判断是否给本turtle的评价质量做出过评价的节点, S9 ]8 J4 D( L  e: x" ]  f9 z
[set note (note + item j ([credibility]of turtle (i + 1)))- F* S9 A6 `4 x9 Y! _/ k3 ?9 C
;;*(exp (-(people - 2)))/(people - 2))]

- `, a& F1 P0 m3 R! J$ b* mset k (k + 1)
0 o, z3 w2 o! J) f]0 k/ T% F, F8 @% X/ Y
set j (j + 1)
) s5 q1 N  U' F4 W8 {) |]3 s( a; T* b8 ^5 F9 S! K/ u: _% H
set note (note *(exp (- (1 / k)))/ k)
! Q* D8 b& z* |4 q/ eset credibility-list (replace-item i credibility-list note)
# m2 V3 C( d# a+ H7 Vset i (i + 1)8 t3 n0 I$ A0 m0 Q9 A$ F
]. W5 w: B6 A8 _- e3 X; U/ R- K6 }
end! H. W6 i' v) D8 c& v6 D' u9 z  D

% M: K" y3 P, v1 `1 f' t( S9 ]to update-global-reputation-list
. ^$ _, D7 {; q  |let j 0& q1 J& M* f  u& E5 n6 M, j. ]0 p
while[j < people]
) D8 x& E+ e) A[- O  i& v9 Y) \9 n' w0 {2 J7 x
let new 01 G; @" `5 ?5 v1 W4 w' j5 E2 w
;;
暂存新的一个全局声誉
. `+ v; r& Q2 f/ b, }" i- A5 \let i 0# F" P* z/ C) V$ g& r' d
let sum-money 02 Y4 v# V& c( y' h5 s! k. J
let credibility-money 0
/ v0 E+ V& ]$ F  s* ywhile [i < people]/ d' }9 Z" e$ d9 X0 q$ j
[, X5 f) a- k: D: z! v4 \; R* h
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
- M) \& e# t1 ?8 J- o- r; Fset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))# L+ x/ P! Y4 P* {; ?
set i (i + 1), t0 {, j1 _7 o2 ~7 X7 X
]% T, a7 ?+ X; t7 D7 D. |
let k 0
; W( U7 ^& e. K1 N. K9 \+ D+ P, s. blet new1 01 t" i/ V* ^* R8 D# n" X
while [k < people]# o4 H0 z) L% Y* J" e3 O2 S
[
0 m3 w: b% ~2 |$ {/ m$ {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)! w, a3 e: e" u9 l
set k (k + 1)
) X& `* E$ I' w# f0 K]
3 X2 O) h# ?6 i* [6 M& t3 s* ~set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ! h7 q, T( G8 Q& q6 L4 J/ L7 q
set global-reputation-list (replace-item j global-reputation-list new)
) n1 k2 O' K" Vset j (j + 1)
% \0 ^. e$ P. A8 F9 M' d/ t]1 [) K8 V& A5 H( O8 f9 _
end
# o7 V1 V8 X7 Z7 G9 F) _
: n- j$ m7 ?5 P8 M2 i' Y' H) h; m6 u

& T6 ~% i, |; O+ G: Gto get-color' N3 s. ~/ Q$ H& ~6 d& l8 Z# U
( R0 h8 J0 q/ M# N& a# h4 ^; A9 U
set color blue

& v) l( q( d4 G1 n$ xend. h, V0 J, @# {* r9 B

. J: m1 r8 i/ S2 {to poll-class
6 K& l( v; ~/ z: Rend
( [7 v9 c2 b3 g( ]
$ u# M# @( u; R- }- ?( L! o' W, ~5 {to setup-plot12 m3 g# i1 ~, n7 ]

  i; J+ c% ]4 J- l2 j$ o% Fset-current-plot "Trends-of-Local-reputation"

5 w; }; n6 u/ }# `( l1 o
- u. x0 B1 i! p( d9 ]) x9 sset-plot-x-range 0 xmax
( S" k, R3 O, R5 z0 S& |9 J/ |0 \
6 ?6 M+ Z; j/ W! i* o5 P  f
set-plot-y-range 0.0 ymax
2 _; ?5 G: Z; H, J
end
  D% B/ x7 \. O4 }* @5 ]: z
% {- }% o0 H" `8 Pto setup-plot28 e) g, X! Z/ p- ]1 u

2 C0 B) \3 A9 T2 ~2 j* v0 s4 n& N$ yset-current-plot "Trends-of-global-reputation"

6 Q! r" W5 g  i/ Q# W2 U. y
2 l& Z& j9 l( j# N) Vset-plot-x-range 0 xmax
9 {# S% C' M8 a
  B' }! h6 e1 a* b; j
set-plot-y-range 0.0 ymax

3 s3 Q" \1 ~" \( [% gend% y, ]$ ?) J/ i+ v5 z( n
4 y% k2 x; Y, L/ g
to setup-plot3, k4 V2 o* E8 ?0 C

. U8 n; E% _4 c- L/ D/ V$ Oset-current-plot "Trends-of-credibility"

: _; {  ?# {+ U5 E0 U: ?) v- c
, I$ H0 G7 E  Wset-plot-x-range 0 xmax
9 C! p! z5 z! O7 h

) N8 @; F; N+ p' F; A, k( j' sset-plot-y-range 0.0 ymax

: y3 T7 t( A/ {! B5 Gend
2 d0 u3 g0 O; H% H6 C% y( N0 W1 Q
2 T0 T/ J: }+ U3 t8 `to do-plots
# `) @: E3 u" }; Pset-current-plot "Trends-of-Local-reputation"
* K! {9 u. e: i* P# G' ^/ h- J: G( jset-current-plot-pen "Honest service"9 g9 I. w6 e! \% {
end9 H( S: l. \  H+ N( w4 I8 ]
- t1 r3 f: w3 H* J3 F
[ 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; a- B% g0 ]  l7 f) S
/ g$ V& H( W" p( q" 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, 2025-10-15 00:47 , Processed in 0.019279 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