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: 17636|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:
5 z- }+ `7 o. e- q9 \. }& ]to do-business
1 k7 E$ R5 P$ G0 P& w* R rt random 360
1 L$ a6 `/ \% z; W3 G+ P3 Q fd 1# c0 O  v; C) a6 R) X' i8 q
ifelse(other turtles-here != nobody)[$ ^  O7 J8 O5 {. \( D6 }! A
   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 v( j; c% Q: G   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    & _$ w+ c/ }; _4 q0 t+ r3 A
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
7 g4 f4 m) O6 U4 ~: U' F   set [trade-record-one-len] of self length [trade-record-one] of self
# {& }& }7 _6 B7 n   set trade-record-current( list (timer) (random money-upper-limit))6 W5 ^3 F+ n; T
( s/ l+ h$ X4 H8 e  `0 U) {
问题的提示如下:# a2 S& G& `5 p' h8 O& v
3 S* n* T6 [& m; I
error while turtle 50 running OF in procedure DO-BUSINESS
  U. s& U! r: s: D3 s- V  called by procedure GO3 ^& V0 Z- b- H! Q4 X7 ?9 e% l
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
; r# m# t: s& H
(halted running of go)# A( x/ o8 ^3 z2 }& n, W8 |7 C

6 q2 Q- m3 \4 [- E+ d& L! I. Z3 f& c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~~! L, T6 |/ `; `  B/ U- C, W5 r+ G
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: Y/ a9 A* X0 I* ?% S3 D, x
globals[1 r. |% f0 W8 ^/ ^. F# g" [
xmax  W: M% [  a9 K
ymax& C& G% N. m' F# f0 U
global-reputation-list
& t7 s2 t% B6 H  C5 C
7 Y, i6 p/ w: m6 O( H6 M, j) W;;
每一个turtle的全局声誉都存在此LIST
/ ~. `, g$ Z5 }# D6 rcredibility-list9 f! D; O, \: [2 ?
;;
每一个turtle的评价可信度! v' n0 Q) e6 r
honest-service( J5 r, e7 ]  a0 J  e) T8 G8 y
unhonest-service
. }& p+ W4 @7 m- A% |/ |, Moscillation
# [2 Y9 l/ H$ m) e7 |6 K& J4 grand-dynamic) _5 m( J8 |1 ~( Z
]
" i* j$ L3 g" L  T
; V9 q& n: X; l' p& A* U( q" Oturtles-own[* A& v2 P& G6 k4 Q
trade-record-all5 g2 p/ }' h& K6 a# k2 w7 N
;;a list of lists,
trade-record-one组成5 v- F/ ^8 X9 o$ w7 ]
trade-record-one' {6 I& J% \! l. W4 ]3 n
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
" N4 n- h" b& d8 n: [' M$ ]* I6 E+ u9 c
;;[
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]]* Q! Q5 |, |6 |7 [* I5 N
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]
! ~+ d, t1 R- L6 O9 e- P& ycredibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list& ~, M$ Z. ]; i& B- K( k) V
neighbor-total
" C6 @. _9 n7 b6 w% X& e1 g;;
记录该turtle的邻居节点的数目7 n/ y+ l) n& r5 X: O
trade-time$ Z- \( v" ^$ z3 @6 H2 J: ^( e
;;
当前发生交易的turtle的交易时间
. P9 @- a4 H4 d2 q* v  O* I0 `9 Aappraise-give
) w" f3 E9 b5 b5 u;;
当前发生交易时给出的评价4 {( S$ ?& w' F3 O
appraise-receive
2 J+ @+ P" Z/ g' t. j;;
当前发生交易时收到的评价
& B) R! b' I6 V( H7 \& B/ Y. rappraise-time
% m! v4 T7 j6 C. M3 a2 };;
当前发生交易时的评价时间; s) Q& ]# }& K" d8 d. n
local-reputation-now;;此次交易后相对于对方turtle的局部声誉1 ?7 Q& p5 c7 Z; f9 m1 ~5 Q. c4 s8 J
trade-times-total
6 k! f  w4 j4 f% R2 {5 C;;
与当前turtle的交易总次数
( a# e- m/ B' s$ U  G  gtrade-money-total5 R: P: ]( ^, Q2 t* M
;;
与当前turtle的交易总金额
; O  X( _5 z1 Zlocal-reputation
9 R/ A. {5 _' m/ F7 [, ]" @global-reputation. U6 v; Q, y. K: b5 g
credibility
6 [# N/ g; W8 R1 T* r;;
评价可信度,每次交易后都需要更新
. j4 H; z7 `* f: S) l# Y6 E4 ccredibility-all
+ B$ U8 h. v$ P1 C( m8 y, I;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据/ I) P8 |* m& h! B4 S* Z, b3 T
6 O2 a4 P8 Q: J, ]# y- R5 B
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5  v" g1 H6 e( U. L
credibility-one  _3 Q% N: o' K9 x$ M4 C3 v
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people0 D; d0 u3 c, y
global-proportion* _5 m6 [, l" t  r$ Z0 b1 b$ x
customer
2 _9 g/ ~; |0 }; {6 J! k& [customer-no+ @" a( ~1 n" j/ j, L
trust-ok: v* \) _" Y8 G' o8 O% ?' w0 Y
trade-record-one-len;;trade-record-one的长度5 E( ^8 l8 C( y8 W* z" x3 R" n2 A
], K1 M$ W. }! L3 U

. e0 D% |" `8 }8 ?; |;;setup procedure3 r- E- b3 k7 |

; j6 y1 W+ b2 ]/ V7 Q, [to setup, _) N9 [& ]5 K4 c3 t* |5 a8 ]6 |
% E) D& A( b  W. n
ca
0 `0 J0 d: m$ u2 v1 k2 Z# t

3 _% [: B* ^$ s, c0 Rinitialize-settings
1 G, o  e. M' _& h+ G" w1 g
) A/ x( d. ?; f4 [! _0 u/ B
crt people [setup-turtles]
! T0 Q; |- K( O
. v3 u4 D2 t4 @0 G: C0 i3 Y- d) q. P
reset-timer

: `: c$ i- V* z$ _; Q" g* i2 D- W( n9 ~6 W; `
poll-class
; p! I6 |( P9 \+ b

& u; w4 \* |1 ~1 w# l8 G2 usetup-plots
: J7 h$ h! i1 C4 ?: O
5 a6 b" E" m( N/ d1 E8 P; W
do-plots

6 _1 b7 B6 a- e& C4 M: L7 u5 t! wend) b. T" E0 Q9 z& u5 e5 M" k
9 l0 {, ]/ m# ]% ^9 k/ y/ _
to initialize-settings( f, ~! P& b  a' \
& E9 t3 _$ C$ b% v" C, R
set global-reputation-list []

3 Y, K9 z' h! Q; \) y* ~$ y( n6 x: l! c7 r2 g# l; y
set credibility-list n-values people [0.5]
; |$ n" U4 {2 ?% \& }

: n1 t4 ~+ t7 f! R9 ?9 Sset honest-service 0
5 l" F1 p  M( M7 k9 ?9 g3 A
0 v3 C( Y+ o: X0 R4 T# l
set unhonest-service 0

1 s7 @1 n1 i# i$ E+ F5 l7 J6 }2 C' p, U8 e
set oscillation 0

; B0 A* X* s( r! p, H/ z6 V, e- l! ^1 {8 Q( l" p3 x
set rand-dynamic 0

# A- G4 Q9 @: }end0 r( U& w1 A+ f' \5 {" R# u- c

! ?2 U7 e" r$ R# Nto setup-turtles 5 n, J7 N' @/ }% s) E
set shape "person") ^& _  T7 U- S2 Z
setxy random-xcor random-ycor
0 ~; t+ D7 k. h" w8 O. y! I# Lset trade-record-one []( D6 e4 Z, ~( F4 O' I4 e/ H5 P
2 Q6 c, l" v8 ]& W
set trade-record-all n-values people [(list (? + 1) 0 0)]
; A5 H+ P( z3 B  F; t2 n

- j8 ^& F) d- c  G8 j6 K+ e9 A( cset trade-record-current []! s0 a; m. w( h8 ?" e- f
set credibility-receive []
. ]3 e2 Y7 ^9 `+ Qset local-reputation 0.5; |  r$ @% F4 Y# ?7 }; C
set neighbor-total 0
1 I7 ]/ H$ a: w$ Qset trade-times-total 0
7 j0 W! ]9 p% V- G! Bset trade-money-total 0
0 X" Z; P+ |; K# R% X1 j" ~set customer nobody; c6 a& Z7 L  k5 {
set credibility-all n-values people [creat-credibility]
" w7 L$ V" z. A* P  U% Y1 t( L9 fset credibility n-values people [-1]. C: t- x* q' V( o2 M
get-color
) n# v5 j5 U" W+ d4 W
! g7 n8 h! Y# O0 s9 ^
end
. e; V0 T7 ^4 {( J, D3 x( N# \. r7 Z- |$ q: @: f
to-report creat-credibility" W9 e: \" D/ Q$ I/ \* U. Y
report n-values people [0.5]7 C$ B. S& W* U6 e. K* E
end- {, ?8 i; `+ b( O' _5 W

7 s9 C; z2 A2 V5 U- l. ?to setup-plots
  B! r: |- r) ?' r! T
9 R* ~2 U. t6 U) [set xmax 30
# t' O2 A% H8 Y) ?+ P, \# f

! g5 P. |: }' {6 A# ]7 Mset ymax 1.0

' b! u9 \% F- _1 p5 l& @
  m( F# K6 }8 Pclear-all-plots

/ @- Z* }9 d. @0 P7 u
/ V* N2 K2 c, H; D, [/ ?setup-plot1
% a2 C# Z  t( L. V+ B
3 N) U# V, c, i7 @' J
setup-plot2

( M0 ^# N  o8 Y* x( v0 A  |
7 R1 z/ M/ G! A5 E  }0 g3 i4 Bsetup-plot3
6 o# @8 C3 Q0 A# x/ N% p6 q% j2 A
end
. c2 S; U* ?) ~* o$ j9 F0 m1 ?, s- b' n$ E% v
;;run time procedures5 A. D7 H9 p0 H- j6 P
. e6 h6 R' k; L1 h2 D
to go
, S3 r) K2 \6 G/ X7 k4 e( P0 X- K! F& C
ask turtles [do-business]

7 Z  Z2 O; T: M$ @3 b. J, Gend& h3 A; Z7 n* M. E/ c

- X; ^- H: d" d3 D% v3 Fto do-business / q# V) Q. L- k9 g3 L: k7 H
) G) s+ P: j, Z5 g

  H! A9 T! S9 M7 q8 Vrt random 360

6 j7 ]9 {; c5 _; M) R* f: u# N5 h+ w( L7 \" C
fd 1
  Y" \* R' [' Z* C: D, |1 S

; Z5 w2 B1 X- v* m  s, }, h% H( B+ S" vifelse(other turtles-here != nobody)[
$ r9 l! Z& R" t8 k9 I& a7 G$ m
9 o; q& q0 F  l
set customer one-of other turtles-here

( A' c% n0 \4 d+ D. X1 ]+ g. M9 O9 H2 R. K7 n( a. v& X$ X
;; set [customer] of customer myself

% ]& `, Y" [# Y3 C  L( l6 w2 L% X% U6 ]/ A. F, w1 @0 B# S& K
set [trade-record-one] of self item (([who] of customer) - 1)% G# T8 C! K! S8 z6 O
[trade-record-all]of self: F+ _* c/ ~8 a4 C8 s0 p4 W
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
/ ^) p0 Z2 w, D9 i. w9 g2 _% B1 [
; I5 i/ B+ X* u: Y
set [trade-record-one] of customer item (([who] of self) - 1)
5 ~0 {/ P/ R- w; K% w& I7 u( R9 \[trade-record-all]of customer

8 m" d& x% ?9 I$ c" B8 I* u' X  _4 @, [7 y/ R4 D8 p
set [trade-record-one-len] of self length [trade-record-one] of self

: l- e9 T& ^! L5 m
) u; i: U* j4 k: d3 }4 e5 Dset trade-record-current( list (timer) (random money-upper-limit))
" k( @- a* B% I7 \7 n

( z  M8 a$ a+ N4 C. I' Q* z5 ~& E  xask self [do-trust]
+ A# W2 m0 m" |3 L;;
先求ij的信任度
$ I7 o% u4 i$ F4 U. |  l6 @  U5 ?* I; d. j# d6 A+ o
if ([trust-ok] of self)
2 o# F5 P$ W# V  g;;
根据ij的信任度来决定是否与j进行交易[( K  Z: S1 l! q# I. X2 R! C( Q
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself/ Y3 K) D1 Q& s' b. ^* w. g
) j: U8 T! x  _% {7 J1 M
[
4 `6 c; [* c9 r1 k

8 \; I" a7 j3 [! |do-trade

$ R* g( o, p! ]$ o9 ?; Q7 `; z; \! P! n1 g7 S8 k4 h
update-credibility-ijl

$ a2 Y4 X' H/ s5 |+ o; R0 W* A' Z1 |' j  m9 w5 Y' E
update-credibility-list: a1 T0 I( J4 o9 F
) b! Z7 w6 l2 Q4 x

# i# L+ C0 N- {, |* p' C# ~update-global-reputation-list

3 [; `5 i" F; O, ~5 {) s" M3 P9 z- P1 {) o' X
poll-class

) y% f5 X6 X# b2 Y1 a! }0 L
4 k3 k0 T( @7 e3 i0 t, Rget-color
. W' p3 K  m9 J
, J- s% |$ y: z: \% c; Z( |
]]% i  F$ I4 p' q( W6 o; q9 {

! t" ^9 W* K) w4 U5 [;;
如果所得的信任度满足条件,则进行交易
5 S: q7 B* z! }: C* t; v* j, {% {, [" V" b0 j0 v7 b- d
[

& L( p- c1 l7 ^7 T- |, f: F! D  B! O  ~* o" f
rt random 360

0 _  J5 c" u" @9 X# }9 o
6 o4 ~. Y% ]5 \4 cfd 1
5 P2 A/ Q  O) ]) C) w/ m
- G: [; X& `' F" H3 V4 M' |: @
]

$ i1 ?' `- C6 d! `1 e- ~
  H: D# A3 B3 f! Lend
$ e& W/ f5 e, l- W  F8 k/ V
4 c/ y2 m, {, b$ X: ^+ e( L- }
to do-trust & s) D3 }8 {, I. Y  O, a9 ^
set trust-ok False2 C4 d5 ]* H8 f" H+ |/ o& q
; y' i) c* D' x2 N) O/ e

. X  l1 A& e: }% C5 ~! G4 flet max-trade-times 0
8 R0 ?2 a+ V& O/ J! Y# yforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]3 h2 G- F/ S; U0 S
let max-trade-money 0) ^# O5 P3 R% y' [. E
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
0 Y: [4 V( Y1 @! Tlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
6 Y$ H7 k/ C. }( n$ b, d6 O2 Y
3 f! v0 g- h5 K/ R5 p' }

0 u( Q" U8 _$ G! T4 `" T4 oget-global-proportion! {2 }% ]4 ~' @5 B3 K
let trust-value
7 O  _4 P# e# k" a& }' zlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

+ x/ \0 Q9 m* jif(trust-value > trade-trust-value)0 h% }6 M6 n8 c, V: M0 j
[set trust-ok true]
* N3 b' l6 s: P1 {4 b! p3 rend
5 x: c- z( I, E& D
7 U# X9 `: K! `+ p- l+ D: xto get-global-proportion
! G0 t1 @/ Y( m7 t- B- Jifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. B! {! w" m( w$ f2 d2 r- @/ c[set global-proportion 0]' W. ?; P5 T3 y1 o
[let i 0
7 k0 v0 H- ?1 t+ E8 h4 Plet sum-money 04 @, V" b8 O8 b4 z1 w, R7 t
while[ i < people]# j% ?, }6 K# I  U& s5 {. B
[
) t7 K# L' Z7 b# [& b) s; Cif( length (item i
, l7 z3 D4 k' T9 [; ~/ i5 \" C[trade-record-all] of customer) > 3 )

$ o" W1 Y! [9 F6 b% _1 p5 m7 E[
# F( z4 ~, b6 ]9 a) B# Q* Xset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
( e2 m! B, F- I$ k  \]) O4 D% l6 J% `
]$ m4 ^; d# O6 z; X) H
let j 08 y% m7 T- `- h6 ^
let note 0
3 ~1 k/ T6 H9 U* }: L2 Ywhile[ j < people]4 ]4 K2 f5 J1 W
[
  W/ Z- v% k. mif( length (item i! d2 U, c2 U' P2 J4 T& H8 W8 q
[trade-record-all] of customer) > 3 )

5 z7 P8 H7 F# b+ L2 S* H[0 u0 R& D% {# b3 m7 T- Y8 Z4 Q" f
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
& L' \$ I; x- B1 Z[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]' ~+ P2 p+ C+ p) M# N
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
- {# X) t$ H8 v2 \" j( h8 b4 Z. e4 `]2 I  u8 u8 t1 K# v
]
' K6 [0 r9 p6 M! cset global-proportion note$ d/ K& g6 \1 S$ }. Q6 }
]
) Y3 q& H' S: H- I. w8 o  |. `end
/ v$ t# |( o& \& |) g( f
. ?. {' t* t7 w# W: [" ito do-trade
4 B# ]5 k$ q  V' J. L5 Y;;
这个过程实际上是给双方作出评价的过程
) b8 D( R" }/ eset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价$ u: u2 e+ S" J& V" Z- i! a
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价, k, b) I  t: u. l- i
set trade-record-current lput(timer) trade-record-current5 b4 J4 ^* j; v" M+ S$ t
;;
评价时间% ]' s" I+ Q5 A1 t5 i
ask myself [
' D$ b: m$ ?# w" t; c& o& U( M0 _update-local-reputation) ?( h1 `8 a5 I& `/ K/ w
set trade-record-current lput([local-reputation] of myself) trade-record-current% ]5 ^9 Q. ^" {# U( f" U9 r( m; I
]+ ]: |  k: \/ D/ `% d
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
. j; N: |; u6 _. Y. n, u;;
将此次交易的记录加入到trade-record-one
4 ]0 M) T6 `1 m- B6 y6 wset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)% j0 w- z: V) J/ s7 K  ?
let note (item 2 trade-record-current )$ F8 ]  ]- y! R0 @- l4 }
set trade-record-current( U, ?6 }$ A+ B5 F# _) o- n  l
(replace-item 2 trade-record-current (item 3 trade-record-current))

: u( x, A6 g5 U! P+ v" J  Aset trade-record-current. I' B* D7 e+ l; m* j5 o
(replace-item 3 trade-record-current note). I7 U5 H4 k+ g3 m
& b* r. ]9 n8 S2 L( V% g

, B, }3 G* Y! @" Q! Z" ?ask customer [
" w  j  [9 c2 G! b; |1 y' hupdate-local-reputation% h& A. L/ U  l( C
set trade-record-current, z6 o0 g: W/ i* |2 ~9 d3 o9 p) c8 ^
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

3 {( }: P, O! u]
  \+ x5 I; o$ j, U) Y: V( J" m+ w  T5 e) }1 F& x& B$ K

/ l+ w9 `9 `6 O2 o. `7 p: u9 hset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer5 v; W8 ~" \* P
9 Z8 X7 a' e6 a- d
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)). L6 h4 P$ j. c; b4 w! m
;;
将此次交易的记录加入到customertrade-record-all# u% Z. R* n1 G
end. y- L3 b0 T9 w7 \9 [5 `7 y- ?; b- A

% a4 m5 B% Z  v1 Y/ wto update-local-reputation% v! V9 w% @  G! \
set [trade-record-one-len] of myself length [trade-record-one] of myself/ h( I3 R6 q: k) M3 Q! \4 @
) r9 i; U' M' u

/ w9 E% {9 t. _;;if [trade-record-one-len] of myself > 3

! H- f# y1 J$ Z& X% W. \! Bupdate-neighbor-total, B# G/ E; d' Y4 d/ x) ~1 h
;;
更新邻居节点的数目,在此进行
2 v5 }* `1 s' K$ ^: m1 Z7 F9 \" Ulet i 34 Q/ H# F7 y5 r2 X! Q8 c% c
let sum-time 0
8 `( {, t, q* awhile[i < [trade-record-one-len] of myself]
/ Y. S5 k2 ]8 g% s& T: e; E[
6 Z$ I* r: v* ?, M3 dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )$ q  c  J, n5 b# y5 j
set i+ ?- A% g) E. X
( i + 1)
/ d! g* ]/ ]" @* z
]
. [! D5 e9 X6 D1 alet j 3' I% n+ I5 a2 ]" @
let sum-money 00 y) d! {& a& T. P! a/ c
while[j < [trade-record-one-len] of myself]' V: F4 B0 Z7 v. q
[
1 Z8 C# [3 Z$ ]# B- X3 t( Mset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
, e5 ]9 f! ~0 i9 X6 a- ^set j
0 D4 I9 Q  C" l1 [# m" q# M7 f6 M1 U$ c( j + 1)

; \8 R% j& L, q/ B3 z, h]
0 K5 H. T6 r) xlet k 33 {; X/ h/ O' J9 c# _" i2 J
let power 0
! N% Q( v7 E# Z& \2 c. w$ Glet local 01 j; e, t% c# n& }& x
while [k <[trade-record-one-len] of myself]
: v6 v4 `$ p) q, _9 r; R[$ ?! S' ~3 @# V+ w
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)
3 [  A( c4 ]! w8 U: b4 t: p- w8 gset k (k + 1)
8 ?; v2 I* m* a]' M, V; U3 c" o5 s8 }+ Z
set [local-reputation] of myself (local)6 B2 E3 c3 z3 N, _
end
7 ?% g" C6 C) F2 ?7 m) w3 j" {: U; D" {8 a2 w2 m! v
to update-neighbor-total# a: }& G- F( o8 w
% X2 ~+ U' @) C( O; V- ?+ E7 A
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]% y2 L% u1 E$ C9 X" j

/ B7 R4 d+ g/ D( e+ |2 j( u* U5 }

5 g' [4 I6 {2 |5 [end: y1 I: C4 ~7 V5 |) b3 Z3 D
1 e4 x8 ?4 m, j" v
to update-credibility-ijl
: O6 I7 S2 S- O. f! n: U7 m7 K0 L* Q& i# i- N* ^' o
;;
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。
7 M% h' @6 y' [7 llet l 0
8 w, W6 S& w- h+ H9 ^6 @while[ l < people ]3 u. H- H# B5 O2 e
;;
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7 }9 v  i8 m9 ]3 y+ D6 D" }
[
% T4 ]2 w+ I6 t% F- q  A; y/ Elet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
8 u+ W  A. K! n6 E& s6 Y9 gif (trade-record-one-j-l-len > 3)2 X8 p* J! G+ u% l8 ?
[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
7 j) J/ [4 V+ H9 \4 klet i 3+ ~7 ^0 D8 t# g$ N3 S
let sum-time 0
* j! t' D4 Y/ p/ ?* ]( i) u. E/ Gwhile[i < trade-record-one-len]
" U; b8 Z5 f. W6 H1 c% O[
) N4 ^- z) M, ]) M+ ^( O' Eset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )* Q9 O# {/ K5 V1 z
set i: f3 K) G$ x& i7 y3 {
( i + 1)
8 _+ T% W2 ~9 t; S$ a! u5 v7 U0 ^
]5 N2 b/ E$ s" E- S  C9 d. g
let credibility-i-j-l 0+ X6 o, _* U  P3 F5 K
;;i
评价(jjl的评价)
4 ~) L7 e; F4 X( l  X  Vlet j 3$ O* [9 }. a  S7 j3 k) B. d
let k 4* Y* ^/ l: P1 i  {$ r/ L
while[j < trade-record-one-len]% |9 o6 R& \  {5 R5 \
[
# @$ L% d6 ~7 }- R4 Kwhile [((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
9 d+ F, C! p4 w7 ?: Pset 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)
$ s  `/ J# k) z: ]& [set j
* |+ F4 g; G+ v  Z, _2 y' H( j + 1)
7 ^! q" z9 T& H5 `  T& a/ i
]% u1 h8 z: Z1 i6 d4 z2 t
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 ))
) C2 j( G; a1 i: h  @5 C
  u9 T+ r+ q9 y, G+ F$ U

2 ]0 ]7 c/ A9 k" ?# Elet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
* J* ]  B0 w% M2 I) C0 _! T2 M;;
及时更新il的评价质量的评价
: b1 a4 s5 B5 d, e8 uset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
5 P' Q" u" b, {2 D0 I& E6 |2 Uset l (l + 1)6 u; u, w8 C5 J% ?# ~9 U
]
1 r) l4 r3 h  {' nend' F) Q& |/ L$ S4 g1 H0 B
" c4 `# Q0 n6 u* d! c0 X
to update-credibility-list5 W6 H2 T8 J7 T  D. F- g. j% I
let i 0
3 m( h* K! F( H& [4 X% L) F2 {while[i < people]1 l  _; k# E7 Y" z: S6 C! z
[, `( f, B- ?# M8 S2 E
let j 0: z7 v3 |2 k) e$ a( r, |# b
let note 0$ f) Q, ?; r/ J5 ^3 G
let k 0* ^4 l2 J9 ^0 s6 w! G2 ^3 G( O8 p
;;
计作出过评价的邻居节点的数目  h+ u; p6 Y  l
while[j < people]
/ I1 B' r1 C6 }# s* Q1 m[
5 V! A  ~  i* u7 M# s. J  ~if (item j( [credibility] of turtle (i + 1)) != -1)
' x6 L, j# _4 Q, J1 U% ?- e;;
判断是否给本turtle的评价质量做出过评价的节点, A, _0 v8 G7 |6 P/ h
[set note (note + item j ([credibility]of turtle (i + 1)))$ l0 Y4 n4 w- ^1 k) r- D, V
;;*(exp (-(people - 2)))/(people - 2))]

0 D6 i$ H/ ^) [' }) z/ wset k (k + 1)+ m5 d3 l/ t6 N7 P# o& `
]4 w& c# _# @5 T3 s$ \+ K
set j (j + 1)
  @  F5 O' p2 v% E3 G, F5 p3 u]
: B* {* u# B0 V9 o, _0 d  Tset note (note *(exp (- (1 / k)))/ k)
& A* J' i0 a- l0 [set credibility-list (replace-item i credibility-list note)' H: ~0 Y+ R1 z" r
set i (i + 1)
4 B+ [! N% m$ C5 W: N. I. h, ^]
' L7 N/ h: b1 J6 m8 ]end
  E$ A+ u$ a& `8 g2 G, ]
8 K+ M, T+ s6 gto update-global-reputation-list
$ i; X4 Q! H) t: ?' c6 Z. b3 Nlet j 0" j$ X6 q! }: l" @% |% ^* |
while[j < people]1 U6 }, C( h, q, Y
[
; i! O# b" S& {0 _let new 0
' u9 i" J7 U1 J$ N4 N( O4 j8 {;;
暂存新的一个全局声誉
" _4 r2 K) q. E! jlet i 0: j& B3 `4 a' D, o6 D1 e+ i& P0 m
let sum-money 0. g  Y# ?8 \& a
let credibility-money 07 e0 E7 Q# Q7 q, D4 H1 r
while [i < people]. |5 E0 e1 p9 b" |  a" }7 ^3 l
[
* W6 R1 I. m0 ]& z% @! Qset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))2 Y, j& j# k* G0 n. M# W% B
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& Y* v, D" m0 t6 |set i (i + 1)" M7 B7 y0 ?* b
]
$ g- {# x3 k- d4 zlet k 0( T9 Y5 d  j* |" |  A; _) H2 F
let new1 0
, ~- e9 G+ X: z5 k$ B* T! ~  wwhile [k < people]! z% |, Q0 o$ S( J
[) w9 i' t/ D% |  `. ?! X
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)
! L2 ?5 e* ]  l; }' P5 e  sset k (k + 1)
$ ~# L& _2 C% O]
% C- Q- O& w" K2 T9 Y! xset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
3 V  c& n! f- z4 U0 o0 s8 ?5 W0 nset global-reputation-list (replace-item j global-reputation-list new)0 N7 }# F7 I' y3 B
set j (j + 1)
+ s: V  J1 M9 C- v3 []
  t* _$ ?7 {+ y' ?, |* b) z& Q+ Pend: |2 P8 q2 m, Q, e/ a8 h8 M1 G* Q
# K" p; p( F+ y# j

2 V. t, F9 o" _7 V% i0 I+ t8 U1 u( R
to get-color1 @# T- M# u. d* L4 f

9 i+ r" w( [% w+ G$ ^6 U0 {set color blue
2 W9 l, L' o! R7 P* d4 ^0 L# s
end
+ G7 x8 x$ h$ y+ \; w1 i
: B8 [" U5 S; l! L- ^  i9 N0 m; uto poll-class
) n& N4 M- ~/ l6 q9 bend
9 O- S8 ~6 d9 w* G, e
8 K0 F9 C4 A  M; A2 w$ bto setup-plot1
  B  r) w- O' G, L
7 w; i" x$ k" A% U( ?$ e1 U  ^set-current-plot "Trends-of-Local-reputation"
- t6 H0 y( f8 U; R

) i: `& e6 {- z/ U5 oset-plot-x-range 0 xmax

$ J1 _1 z  z8 ^6 z7 L8 u3 m* {6 E3 j6 n+ p4 |
set-plot-y-range 0.0 ymax
' K+ ?* Q8 s4 F0 Z2 p
end% y: _) _1 U/ ^1 h+ g* R' H

. }0 h: k7 [& A  Q- uto setup-plot2- {3 f0 k" i* Q  K, `7 E/ m

! j% g! H6 `; }' mset-current-plot "Trends-of-global-reputation"
- S0 k8 r" L4 K  W) D+ j" P. A+ ], N3 t

8 F( n. L  {: }  `% r/ K9 p7 @set-plot-x-range 0 xmax

1 W8 O$ C( r# U# i  b
/ P/ X0 F( j6 I0 o* C) K; Jset-plot-y-range 0.0 ymax
: I2 S4 R4 ^, \7 X  x% c$ o7 @- w
end
' {, Z4 `) w, o% }" e9 z8 d9 o: Q+ E% q, ^) b& H1 R9 s
to setup-plot3* T! O! _9 ?- O& D% s2 @; q# @

/ l" f9 Y+ m* V# Tset-current-plot "Trends-of-credibility"

9 C. p2 Y: ~* R! t0 P3 T6 w! O& @  G4 Z; j. K: o
set-plot-x-range 0 xmax
& D8 l! g" `8 o% D' ~3 ^

1 V8 \  @& Q! U, w" b) h4 N+ pset-plot-y-range 0.0 ymax

' D& w- R9 @; S$ w* a, Send* j* M) u3 r3 V! a% B) S6 q3 e. |( t/ g
' P; O$ \! b4 R" E
to do-plots
% u2 V4 r  n. c9 W# Q6 O* G. Iset-current-plot "Trends-of-Local-reputation"
/ O4 x: o2 e' g5 Hset-current-plot-pen "Honest service"
: I( u" w& n' U5 oend5 K  X8 T; o5 V
: u9 P6 b, L; H# W  }
[ 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.2 p! W4 [7 n; |3 b' T

5 }! \! j( T: D$ O/ J. 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, 2026-8-19 19:35 , Processed in 0.019311 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