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[交流] 关于turtle的使用问题

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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:) E0 Z$ d$ z, _  }+ d1 S& B3 T' g9 ~
to do-business 1 D/ v3 v( [" {9 w$ [$ T
rt random 360- S/ t1 n/ a- G! `5 i+ T
fd 1
( L+ m2 ?4 M$ W6 N2 P ifelse(other turtles-here != nobody)[% \+ b6 l. x6 `2 m
   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.
& H# Y# Q) Z4 p; R8 j0 p   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
+ v, v' r/ W# K8 z5 d9 Y5 |( }/ E   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer# Y/ d" n2 E, e/ d. Z, ~
   set [trade-record-one-len] of self length [trade-record-one] of self# g! v9 ^2 {/ l( u1 m% p
   set trade-record-current( list (timer) (random money-upper-limit))+ w) W  ]# c1 r) h, S
$ Z0 |. I  D; W$ Q7 x6 `
问题的提示如下:2 w1 B/ s, z' h3 o3 j

( {" {' l! |7 m" xerror while turtle 50 running OF in procedure DO-BUSINESS$ C6 B9 x) r" e" n
  called by procedure GO
' W4 T3 [( P. ?- w, P& M) mOF expected input to be a turtle agentset or turtle but got NOBODY instead.
) [/ _  P0 {8 K7 `* s' n3 v
(halted running of go)
4 h! Y5 q/ o2 @0 [1 V: S$ J2 R$ U- w8 k. t1 ]; U+ _
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~~
6 a% E; g! s4 |$ c+ m5 {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.

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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
# v' X1 ?8 o& B3 a. Qglobals[
: Y8 ~3 |" X' l. }4 L- Exmax
" J, L% Y3 _6 U2 O, l0 ~1 lymax
/ Q( _4 ~% X$ J1 I# D  `' W1 Hglobal-reputation-list
, n4 o$ e; S1 @6 U' I' n/ T8 W: c
;;
每一个turtle的全局声誉都存在此LIST
+ f, T; e; C/ H( C! [4 d& ecredibility-list
: X% n7 M/ q" P0 k;;
每一个turtle的评价可信度
8 {' h& {7 T2 p' @  Q2 O) Bhonest-service
0 b9 X8 ~  W. w9 z6 I) Kunhonest-service
$ f& `. y# k3 h8 Z- G3 y9 qoscillation
0 @; |$ P3 m  e+ ]" N; Vrand-dynamic
6 B3 ~! M& w' B% O. p# {]
$ ?) e" _! U7 \, L; [( [3 q
0 E0 _( s4 F/ B) C  oturtles-own[0 \( z* q9 V. R- w$ ?
trade-record-all6 @% \# Q; ^+ y- V- T
;;a list of lists,
trade-record-one组成0 u# A* @. T6 T1 G8 E8 q
trade-record-one
5 ?2 P; V) `1 r7 M; N6 k$ ^6 l;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录( _3 x0 L1 p8 f7 p5 }5 x

4 d. j1 V2 q# b  q9 ];;[
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; ?7 d9 y3 N% Ntrade-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]0 S/ }9 C  a4 @# G3 w6 s  V  [
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/ ~' L0 x3 w1 i( E: F5 {
neighbor-total) T! ^; Y5 u) e9 W
;;
记录该turtle的邻居节点的数目% b8 T6 T" m- l" k* J
trade-time! j& Y: j) C7 p! ^
;;
当前发生交易的turtle的交易时间+ x1 X  I& h+ u
appraise-give. j6 v3 L+ Q0 g5 T: h( F
;;
当前发生交易时给出的评价$ b/ _" x$ l4 C0 ?* Z3 j
appraise-receive
) z0 E& Z7 B/ v/ C;;
当前发生交易时收到的评价  t% Y: o; p7 X8 E; f
appraise-time& {4 c6 _, Z5 Q( C& I, |9 ?5 V
;;
当前发生交易时的评价时间; l" K4 e! O* U2 i
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
0 x9 v0 M- ]5 O" f9 otrade-times-total2 k; T9 L5 @3 m, W( T4 ^  Z
;;
与当前turtle的交易总次数
$ a  w- m- G4 G( ?1 F% otrade-money-total
5 c* P' m' R# O, t" u2 [: ];;
与当前turtle的交易总金额
5 V; m1 @* f5 |# _' h; @) Ilocal-reputation8 n  V  h% L) `" @: R9 _9 Z
global-reputation
; ?9 N8 F3 c, S4 r0 _+ Ccredibility+ f* L+ N7 g8 E# v+ T4 _
;;
评价可信度,每次交易后都需要更新6 y' r" n1 H% l* g3 W' W
credibility-all  y5 F! u2 b) |- T$ {* X
;;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
  I3 [. E# y  d$ J. b) T* P# F  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0.5+ c: r6 e* ?3 K" c9 g
credibility-one
1 l" w2 x2 F  o1 p& u( \. A& J+ `;;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people4 t# X# E, g, X% U" j5 P( E
global-proportion1 l. s  F8 d+ N9 H% j& y; f
customer
- _3 s  P7 n) f, {% v3 U$ f+ d" ucustomer-no* v3 `5 G% C6 b" M. n6 w# e
trust-ok) t: t  P6 r2 |
trade-record-one-len;;trade-record-one的长度. Z2 l- d8 m" b; ^" s  D
]
# K) w: x) M0 r$ D: U$ ?  v( L0 S" @3 v8 h& B  E
;;setup procedure6 c; O% w- Z/ R- X

( e) f4 d, I' H; T4 @to setup0 w7 |! o1 [7 {

, _" V1 J% ^) ?8 I6 hca

9 {1 q: s0 H3 S( ]* |% z1 P: v
) p  m' i* @" j  I/ T4 G& rinitialize-settings

7 {8 j& o( o& u) t8 M, K* f: ?5 U. c; U3 `2 Y
crt people [setup-turtles]
8 ]) U6 g. R0 z2 g1 g% e6 c5 j

( Y! w7 x! L9 x8 v  K  Ireset-timer

/ ?) y' W1 F; G- x- c5 X% r! Y3 H4 @' C; T
poll-class
7 \/ d8 y' k% z! T- ~
. T/ A! P$ u' ~! G5 q  }( z
setup-plots
4 s5 A. L: }  d7 v* A/ @

2 q4 [# [: ~3 d5 P+ @( |( jdo-plots
. b: H  V$ y: K5 {$ H* `, R
end, C4 m& V, ]! y3 r  @

7 n& h& K6 B9 Q* A1 `; y# Yto initialize-settings" U8 A: ?( r* [0 C  o

7 ~$ G: j9 [* S! Dset global-reputation-list []
/ D8 g. a  u" I7 ?' U) l- ^7 ]1 Y

! f1 T! y2 n2 v0 U0 Y3 ^5 rset credibility-list n-values people [0.5]

6 |1 B' H, w% {- w2 W# o
' u3 F9 p- \: T6 ?set honest-service 0

8 F& q  ~  c" w; N5 n% u' ?
# W+ [, a. O' G. r0 hset unhonest-service 0

6 Z4 A* U& B/ w/ e- T5 e- j- K# e* j" a- h+ X4 ^0 r( l  S
set oscillation 0
5 y1 z/ I% R9 A$ n  u. p
1 P* k9 t1 U# k1 g. X) V. n+ C9 L
set rand-dynamic 0

4 y. x1 \% B1 S6 ]end
4 v+ Y, M" b( o# Q1 g6 j5 x( G
to setup-turtles $ p& P8 v4 Z# k0 ]
set shape "person"
, u- M( m8 A2 ], `& J7 Hsetxy random-xcor random-ycor
% l5 ]* p  B) G! v5 Nset trade-record-one []1 G7 e2 G4 ]5 z7 B6 |1 u

! c/ Q: V% M3 i  `6 V2 N" f" |+ wset trade-record-all n-values people [(list (? + 1) 0 0)]
: x0 D# S* r, W& Q$ C3 e- U; r
$ B2 E* H' n& \
set trade-record-current []" w' @& y8 m7 I3 Y
set credibility-receive []
3 y" ^, h) q8 x* w8 d2 ]" qset local-reputation 0.5
2 ]* Z- t% A% @( xset neighbor-total 0) V) w8 W4 N3 u+ I& f
set trade-times-total 0: z; `( G) T: z7 w! o& }3 N3 B
set trade-money-total 0
) K+ g9 @$ u' Y& ~# C4 tset customer nobody
4 \3 @; v( h0 Y$ mset credibility-all n-values people [creat-credibility]
5 x0 B: w; l. `" ^% A% ]set credibility n-values people [-1]
7 {; Y) X1 B' M, E2 N! Kget-color! \3 S& [- m% l' Y
7 N% x9 ^* A* E/ j6 |, v$ a5 T
end; E. Z& ~7 `: ]" X& D2 D/ d7 X" J

, B$ \" W/ ?3 s# F; h. l& n- ^to-report creat-credibility7 t/ R$ H, t& O; |8 Z
report n-values people [0.5]
4 R5 C- X3 L! c' {( V( R7 _6 q6 d7 Tend8 L6 \; j8 t" S
) x* C  k, c0 T
to setup-plots! }0 P) x* A7 t9 Y, q

( K' _1 ]* n  k$ ?1 v2 @. K6 w6 e6 iset xmax 30

4 ^7 o; O/ [* K4 _$ k  k/ p3 V1 P7 `- ?6 J8 Y. E% \
set ymax 1.0

$ M$ p1 j1 C. `4 c$ p- d6 J/ }
. D- t. z4 u" r7 s  K5 Dclear-all-plots
1 `0 W7 h( v, l' ]

9 k' M; c* [  _8 Zsetup-plot1
+ t, T. v3 U( x. X, u4 K
4 H+ l$ ?6 }$ h" F1 N+ u
setup-plot2
/ X, W7 G% u( B
9 Z/ h) n9 s* Q6 D! e( D+ e
setup-plot3
; L( S& U/ e8 i
end
3 h3 U5 J) o* q% o4 {! E* b6 N  R
1 l& X! L' F9 u2 H% _;;run time procedures
3 j2 n. @1 M; o2 V# I% B0 B) ~; _/ P% C" m6 W) ^
to go% R2 ^+ \  o) G* m

1 c7 Q4 ^5 s1 Iask turtles [do-business]
2 T  K4 G) E  j, G( _
end
1 n$ g9 @* O! V, P; w: F0 l( p$ B4 }! V
' j+ z  a4 u; i/ r  c6 xto do-business 2 {8 G8 O, b1 U. }7 q, }9 K+ ~. Y
! D0 Z9 {- w# S& P/ H
9 c4 s% I+ ]+ }# L9 i: \5 e
rt random 360

3 Z% C& L& S7 Q2 d. z$ R* a9 T7 ~
fd 1
- w6 i( ?- z3 F0 |0 G4 d( x+ M

; v2 G( V* X! C9 yifelse(other turtles-here != nobody)[
, y0 m* B# j4 P$ k5 w- m) Q

, a: s# n& f* K' `) s! V5 {set customer one-of other turtles-here

+ c( q" p* F" C
4 A! Z5 X; |: G# Q; n# ?;; set [customer] of customer myself

4 |- ^5 p" b" [2 ~7 z) R( p: V/ m6 B6 I/ m4 [
set [trade-record-one] of self item (([who] of customer) - 1): W9 [) s  p0 i+ T7 w3 z
[trade-record-all]of self; v  a  z: ^. M! Z7 m
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
& E0 x) b  a; }6 \1 H1 N
9 m! o  g: a. i1 B$ U2 ^3 O
set [trade-record-one] of customer item (([who] of self) - 1)
5 z( G$ u+ _4 T# h. J[trade-record-all]of customer
3 v7 `- [$ O5 B( X9 i7 L* ~, F

5 f3 E. x. w! A: p& A: ?  H+ K  Fset [trade-record-one-len] of self length [trade-record-one] of self

# j4 }) ]- K; s/ e7 k" u  i. l0 K6 g( r  C  I. S8 E
set trade-record-current( list (timer) (random money-upper-limit))
$ W3 p) B0 N' T; G8 y( W
9 N( i' N0 \" u' R9 A
ask self [do-trust]
$ L/ N! E4 \% E0 L;;
先求ij的信任度
8 X) y' z3 }, Z1 Q, M/ k
/ X1 R- g6 Q; b; v5 ~' H! qif ([trust-ok] of self)5 ?. h% C) H) S4 i  d( t% J% `
;;
根据ij的信任度来决定是否与j进行交易[$ [$ i- r" u1 m7 {+ X# l
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
! v' ]& v9 }0 s' H$ Y. k! P4 u2 B  U; Y1 |! K- t6 @0 S
[

: O. K3 {  c: w" W* O) d- C
+ W* G7 d& h5 udo-trade

% d0 m2 R2 I5 B) M
% l& u4 P7 H5 X, N* y: @update-credibility-ijl
5 ~' c5 b: k" W( y
4 R) u& B8 ^7 |3 y7 I  ~
update-credibility-list  L# _6 s1 N8 L# [7 f2 P0 D( W6 f( Q
/ M) o. n: X* N, @! _
. T# o! z: E' f: o7 k- ^% e
update-global-reputation-list

7 R5 a2 X0 b8 B& L
1 ?# I5 Y8 ^! m- v6 {6 F# hpoll-class

8 f3 C; K& M( |* t; x5 Q
+ h; q1 e( {7 F6 v, {8 yget-color

, b3 ^' @5 T5 p$ t' k% Z
/ u! U# s* ~/ _9 I" D' U6 J]]
1 f5 d; W5 J  n1 G: J# {! ?+ f. p
;;
如果所得的信任度满足条件,则进行交易
0 f2 j7 a$ T* X9 d
1 Q$ d4 U, p. E: Z. n! ^[

" D. i* z5 e9 J, y- y/ z$ ?8 g3 s
) d, I/ u& c% A' mrt random 360

/ \* f/ T6 L7 Z- I6 B% {3 o
$ k* `7 i" B; F  B( l* efd 1
/ R( O( L- X. G( f4 u6 o

- V) A- S# h# J' @; \' _]

8 t2 j7 L" I7 R6 {% J6 A9 F% X% X/ z5 r3 T. c- w
end

2 H) J9 ]" W! q; A8 V$ X) J! @) s- m
to do-trust 3 e7 l* e9 T- W! H$ V
set trust-ok False
+ r7 q8 a( x! h: D/ d& r, _  Q' e! o) d8 T
5 s4 \6 Y9 }( r+ P7 F. T) o
let max-trade-times 0
8 t* B9 ^5 ~7 z) `+ \) v: h) vforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]( J3 ?; y0 A: U9 V8 r' H
let max-trade-money 0
: O8 G& n; U* e% w% \% @foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
5 m0 F5 {3 m& p+ xlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)): X+ e* B! O. Z, R, ~" r& h
( p6 V+ B, N2 ^. c! H) m; x9 \

: T8 ~( u3 j* ^4 _* C; Rget-global-proportion
( ?: k- P3 V! s3 a- G4 Q5 Rlet trust-value
/ b) W! l% F) J2 G* _" o& Q& c& {" Z# flocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

" n4 V  u8 s8 z5 j- @- i/ O1 V' C' S6 Nif(trust-value > trade-trust-value)5 [8 q0 N1 l% Z% l3 i$ h
[set trust-ok true]1 l+ x' \9 _9 N" a4 W
end6 o2 r0 x) ^7 c5 ~+ l- D( q
: H7 \, T. q8 Y  ~( w
to get-global-proportion
! B2 ?% w2 T3 G% j; @& sifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)0 g$ p2 `" x% l* T, C+ T* p" p# A
[set global-proportion 0]
  A2 N+ L! s+ M0 b" o[let i 0
% V5 m: J) L) o7 \* Q+ l1 D# Clet sum-money 04 x. |/ V9 L" G& o. ]0 S: _2 v
while[ i < people]- ^. g$ M- X: p/ Q7 A
[3 o9 D; r# N2 f  M
if( length (item i3 E+ G" ~2 U6 i- o  q- A
[trade-record-all] of customer) > 3 )
' a. D- Y' ?+ T- s
[
/ A2 @( n# K7 c; g3 |set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
3 `0 j* i# B: \+ r/ Q]
' o8 h* t4 q- i; L$ B: []7 D3 O- y" g9 d/ h( n" x9 w
let j 0
/ ], P6 [* Y$ {- Ilet note 0/ B! t5 b. x' g" w# K3 Y5 }
while[ j < people]
- {5 X  Z) Z0 {+ h; k4 }9 Z- j[
6 e, y( m# F0 mif( length (item i
6 O' L# c1 l/ ^, d3 ~8 ^7 j3 z[trade-record-all] of customer) > 3 )

; E2 ~  P' x6 i) O[' C+ o" j* g5 W+ j" N5 o
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
+ `" O* T$ W/ p! H% @5 c: ~7 G6 L- N[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
/ ?9 i+ Y0 \* r% ~[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ k1 ?2 M1 s. {  B1 r]
& S3 ^! e' |% o7 p, H- ?]
7 C4 }  Z! O# a" ~; @" Iset global-proportion note4 V+ p+ ~4 X3 P6 @4 E
]: W. O9 ^. q& \; t2 G  l6 `
end
; C. `. E3 m. A, j7 I8 {4 M7 N% _! Z6 c- X/ u5 a$ ?
to do-trade
0 z6 N, f" _! Q# E;;
这个过程实际上是给双方作出评价的过程
/ P& l# n1 h. w5 j9 d; Gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
0 h+ y. M7 o3 K  o7 kset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价$ G% |. N6 z, R8 G. e, `& O
set trade-record-current lput(timer) trade-record-current5 c, q( ^2 b) t# l. g
;;
评价时间
1 L% z) J: d6 F  z( O  _ask myself [
0 h$ W2 ?; e/ N* Pupdate-local-reputation; G3 f+ X, Z# y
set trade-record-current lput([local-reputation] of myself) trade-record-current% M0 l6 v9 v  q/ t* R) ?7 k
]
9 I" j* Q# @+ d2 Iset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself$ U& y+ o0 V$ g5 k) p5 Y0 y6 L
;;
将此次交易的记录加入到trade-record-one
! B, `/ s+ T" y7 Q: @7 lset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
4 ?" _- d& R& x2 D* rlet note (item 2 trade-record-current )
2 I' P! {* k9 C7 t; H, E- Y- bset trade-record-current
5 V4 O- Q2 h& p% ?( d5 W(replace-item 2 trade-record-current (item 3 trade-record-current))
# d2 q) H5 F9 v/ n" v: Q1 c
set trade-record-current
' u. Z) w8 _" r7 x1 C(replace-item 3 trade-record-current note)9 z: w. E, u4 H' }0 m- @! L2 M
! S5 q( n% X) Y! Q+ A- m# ^2 I( y% e
9 r/ y/ R: W' Q6 U
ask customer [
# K& O6 e) G' {5 ]1 [! n5 ^update-local-reputation1 \% F/ B" {4 }. n& e& b5 a$ y' O
set trade-record-current
, z+ h* m- z2 R7 E(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

1 V8 l7 X" k9 @  j4 {9 e9 X]
+ {; L( h, ^0 o# W" s& p3 Z5 X3 G# t6 W  B+ r+ J  K) T

) T. U/ Z! X! P: ?9 G) `# Cset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
( t% F5 C" ^: R! H& D/ ^5 m7 n) K
3 p+ M/ M; V& P/ p1 k
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))+ }1 ~- t+ _0 U6 c, \
;;
将此次交易的记录加入到customertrade-record-all( ~3 t( o" G) V/ k. a& A
end
7 Y9 d" f& z$ \% `
5 V' t" a* d) M# I' ato update-local-reputation) h1 O: R) P3 Z) ^% t  k( v
set [trade-record-one-len] of myself length [trade-record-one] of myself/ G4 |% J% D& i# q) a2 v

4 N" s, r" M/ S- C" F1 m
4 s4 K  _3 d& s+ O;;if [trade-record-one-len] of myself > 3
" |- \( ~6 N/ t* R4 Y  {8 E
update-neighbor-total
* L/ ^# E, Y6 B% e' M+ ];;
更新邻居节点的数目,在此进行4 K$ ?( b; z* Y; r
let i 3
- I. l2 ~& q" ~, w5 H" b( @let sum-time 00 r- U' L- Y% x* L
while[i < [trade-record-one-len] of myself]! F" o* Z# u9 Y, g1 v2 u( A
[
6 Q$ E6 E  V- ]6 Yset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )8 Z  u$ c" y& C: s7 C
set i0 j) z+ ^: P: k& ?
( i + 1)
0 Z$ o: g5 c! f( n$ Y
]5 ~- L6 E1 S4 f2 X8 E
let j 3
% _. c" G# y! |3 A/ }let sum-money 0
: T' T, F6 ^- Xwhile[j < [trade-record-one-len] of myself]% E. n% d) o) T' i  x
[) ~5 @  _8 L& g8 t* D, l" C1 {% I
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)
" e* H& u, w. [set j9 Z! }+ |! k% [
( j + 1)
- S* F3 a5 k8 M: P9 t
]. p9 h4 J. [9 P7 e" `
let k 3
  S2 c: [+ @: w2 J6 F8 Llet power 0
; g- T& w4 F9 x. @3 V* `let local 0
4 ]: H, D2 o# i; T6 G% |4 U) ]4 b) cwhile [k <[trade-record-one-len] of myself]
6 @2 N, u! n2 a[; m/ d. G& j9 Y- K- x
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) $ x* ~4 s# D3 [9 m( Z5 A
set k (k + 1)' m5 o$ I. l& G/ w, f7 t
]/ t1 A/ u# ^8 {/ R
set [local-reputation] of myself (local)
, G, O) t6 s, m6 f6 oend8 H& E  D" x- @" x9 X$ e- _) C
. C! J8 V2 N% }, n
to update-neighbor-total
( E. X8 A  d3 _% N' q$ X0 E5 ~. H  p! o/ _1 n
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
7 v  ]! F& h5 \; J, l" W, f9 y8 y8 a
8 l, c$ I5 q  m0 M4 j% A3 G
end: i& ~, j- [. ?8 w( D4 B& a% e
0 c% D/ s- r' s& A$ |
to update-credibility-ijl , F; U7 ]. a9 m! ^' \9 L  p7 U+ C" w

/ U1 B7 N& {, m7 v; P2 U;;
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。+ g- r. E6 P; ^; ^
let l 0+ L! I" d+ |! [$ Z# E0 d0 s2 k/ f
while[ l < people ]
5 M8 ~9 W; C- |* S( l8 u; T;;
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0 V( {+ m6 e2 o: H9 F2 F+ `+ s
[
& e3 y( x4 ~/ ]& u- w$ klet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
# i7 R; n, b5 E0 B5 [if (trade-record-one-j-l-len > 3)
4 |" M+ V* e3 ?! q& h[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
8 ?, \8 l( D1 K. Q1 q; L/ p$ J0 [- ]let i 3
! v" ]  A+ l( \! J; ^let sum-time 0, G+ V( y8 N" s. B
while[i < trade-record-one-len]; E* p) Y. ^1 ]7 C' v9 a6 t. L6 C
[
5 y; A% X  H5 a% Tset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
1 P8 f6 s0 q! X$ V4 S7 F4 s6 @7 vset i
" G; T- i+ b6 U7 T( r8 ?( i + 1)

; }1 v" @5 c& t]" ]# Z7 L. P' L0 s) m
let credibility-i-j-l 0- i$ r. j2 ^  |0 [+ m7 [
;;i
评价(jjl的评价)
; b3 B$ S2 C0 W; f& W. T, dlet j 34 \' F/ R1 [3 y: I5 U6 A& C
let k 47 h7 v  g3 ~8 \" J4 G( k7 d
while[j < trade-record-one-len]6 A. \! P/ f; _: o8 P2 j" {
[
" ^' F4 T* J. O: Rwhile [((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, s- U5 ^$ x' {5 `& i
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)
0 m7 w, g1 `/ H9 V7 mset j* \5 r# v) x: Z* L5 M9 z
( j + 1)

% ~2 P+ r9 b( z! ^6 ~8 e" N]' W& d% q/ h! |3 S, z" c2 f
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 ))
5 `; q5 R; a9 t; c4 ]6 J  b: t3 w8 r0 i; e4 d( U

0 h+ G: R- W# G2 F  R  |5 rlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
4 g1 f7 g" q- t9 e8 n7 E6 t;;
及时更新il的评价质量的评价
# `; B6 y. I$ \* G- gset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]! k& r1 H0 a3 V. ?. D
set l (l + 1)" e! ?" X' _8 y5 @, y, t
]
& l6 P- J! u9 L8 Q7 J- \& yend  D$ P2 I* q% m) X

' a5 y) R1 ^; ^to update-credibility-list
2 Q& T# N7 P* L* F7 R1 nlet i 0
8 @5 B8 l/ P6 R5 Qwhile[i < people]8 Y, z" B# J1 W4 p+ d9 a$ i
[1 o& e( t# |0 q5 H: K7 n
let j 0# m: z1 |0 Y. P- @! d
let note 0. \6 i- T$ \8 t. k4 @
let k 0
! O" A, V! G4 p3 D+ V# x; m/ K;;
计作出过评价的邻居节点的数目
, n  y/ d1 P- {+ C% n# R+ iwhile[j < people]8 Q7 V  N) |3 q6 Z5 W6 J7 p+ e
[
3 i: v: K+ j) p9 ^% _* G0 U3 nif (item j( [credibility] of turtle (i + 1)) != -1)2 }( k, {) I5 j, X- z% \
;;
判断是否给本turtle的评价质量做出过评价的节点, u/ B2 n9 D! e  P9 ?
[set note (note + item j ([credibility]of turtle (i + 1)))
& O4 {- r/ H3 ^4 J+ F% H, ];;*(exp (-(people - 2)))/(people - 2))]

4 u6 D0 d) |3 c& {set k (k + 1)
( y2 v8 i, H9 F' |]' L& G* O( [7 z+ k
set j (j + 1)0 {" A# T3 N3 L- H
]/ ~# m( [, t" h- k
set note (note *(exp (- (1 / k)))/ k)
( _! e. o  Y+ z2 O9 H: Z# a* xset credibility-list (replace-item i credibility-list note): `1 d6 L% D) E0 A( f( Y  I, M; ?
set i (i + 1)
8 M" b# Y- U9 \. j]
& G, S. H' C7 v9 f* L5 V: ?4 dend
1 o: a" v; w% d4 j: K. Q7 D4 ~& M$ M4 b! q. h
to update-global-reputation-list+ d& t- z% s, S. A! n" r- U$ v
let j 00 [% z" H( R/ E, X: e. J7 W
while[j < people]
( w: b( Q8 R2 \3 o1 N/ A[9 q3 j7 ^  ~, t$ m  G! S
let new 0
  t7 b' _, _( U, J, C;;
暂存新的一个全局声誉% w# O9 c. i9 v1 A7 o$ A6 p
let i 0: t; Y1 R  g$ S) T8 R* I
let sum-money 0
$ i* c* R& X' O/ C3 Ilet credibility-money 0
0 G& z6 N; L/ @* Q5 k' a' Nwhile [i < people]' M  L$ H. m. M* u! Q
[" b6 t9 X9 A/ x. y
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))0 N, V( X2 d- `, G$ z0 B9 ?
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))9 M% z6 P$ k% j' P* T- r  I
set i (i + 1)
1 n0 _# g+ l5 S: w4 @0 H- o1 J]# Q4 `: Q7 _* i
let k 0/ A! b5 v1 A1 L, c. Z) \) F
let new1 0& F3 }; \1 n) C# C( M: f" T7 k3 p9 `
while [k < people]7 I; Z. k* R' g; s$ S
[! W+ u/ v4 S4 a1 n
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)6 U* t+ {9 c' J& B! i$ V5 N
set k (k + 1)( X% e, Y+ T4 Q9 d
]
, s+ V4 h( s6 g( N7 M4 _set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
4 l. @9 R* V$ Fset global-reputation-list (replace-item j global-reputation-list new)
  X# y- b) G$ t1 _set j (j + 1). z( ]+ \1 }2 V% Y$ g8 W; O1 J
]8 z# g( `0 D4 p, W9 L: D# H
end
/ A% h, b. R6 G# f, |3 N8 f- d9 J8 F1 r- y  _

4 |/ R/ Y+ ~1 {4 U! }0 q& O/ G) d% s& }6 u" E7 l8 a
to get-color
: y: z4 C( k# Q3 R5 }, J
) V& a  m9 a+ Eset color blue
) {& W* q0 Q: c, P
end
, Z( B4 C* P% \2 W" g6 W3 f
; C/ J1 \- m- Y3 Lto poll-class/ a! t+ s1 a5 _8 C9 S' ^# v; R- U2 u
end7 h7 p7 R1 `( Y6 a8 I' N, }

8 i' @% X8 H" O( O6 O/ l* Zto setup-plot1
7 U  [0 h& V, K7 }0 L1 O- T+ j3 t2 \1 X1 {) E" d
set-current-plot "Trends-of-Local-reputation"
+ `% y# x! K- ]) ?* s' C" S* u! J

8 X: L" k$ D8 Aset-plot-x-range 0 xmax
% k. [. L# B3 Y* u& B

! G4 L' A9 {: Q1 H9 Q6 [set-plot-y-range 0.0 ymax

7 x" E( \* l0 o* N7 Bend4 F' d' y5 L3 V  Y: {
9 o3 G% n! P3 d' N% S
to setup-plot21 g. o0 s! X; m, ^! a. a# L  W% f# Q
9 B, p+ J# \! B- {3 _
set-current-plot "Trends-of-global-reputation"

; @4 [6 n* [/ E
& J: B; p7 t% q" S6 {set-plot-x-range 0 xmax
. ?# N; a" H+ p+ W9 A

3 `- ~/ |! g) b1 eset-plot-y-range 0.0 ymax

( V! s1 X. u! u% S- }% fend5 H! d* q9 D, j% J% {1 ~2 R- h
# \) S4 ~# i5 N' L. @
to setup-plot37 O3 H3 @6 k5 d* M
3 L- b: M( X4 _' x
set-current-plot "Trends-of-credibility"
7 r' o. u5 M! A/ m: O+ M  N9 O- @
2 P; R' |/ V2 G8 E
set-plot-x-range 0 xmax

% m+ G2 [2 \: J, z4 _' t, _/ Z5 F% f( B8 d
set-plot-y-range 0.0 ymax
2 b& }: K: ~* W) R8 }2 |& x3 _  i
end# y% q2 Q! N6 Y! w3 ^

  a7 z. \2 d) ^/ Tto do-plots
- p3 r8 i( G6 c7 H% Fset-current-plot "Trends-of-Local-reputation"
( r  x8 j8 P) i7 hset-current-plot-pen "Honest service"
9 p' `8 s) k' Z" s; fend& `& r3 j/ `* Z# f

9 W3 e4 b- D# S7 w( u[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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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.
" A- f1 [( S9 G' V# V
9 b8 k# a: I  |3 C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?
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