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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:
/ d" u3 c# Z7 ]( e1 zto do-business
3 x) x( T* S  l  P; g rt random 360
7 f0 L5 _" E+ {8 @8 [$ V# ?  F5 G fd 1
' |; }. c: c6 n- V" U( | ifelse(other turtles-here != nobody)[& x* x" w8 D; W9 w
   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.' S9 M6 ~+ O/ Q* J) {
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    . n! S) Y& D' x3 ?4 M7 {8 ~- L! R
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
. Z% ?1 q2 _* g8 _3 m& j   set [trade-record-one-len] of self length [trade-record-one] of self
( W- @/ W9 a: W  e   set trade-record-current( list (timer) (random money-upper-limit))
( m0 [  a4 W) o2 Y5 N: x: q! i6 L1 U. @3 ^
问题的提示如下:0 Z4 H" n  y' v" t& l4 M+ M
) o% T  Z) m( K, H0 l6 S/ R
error while turtle 50 running OF in procedure DO-BUSINESS* m: Y2 [- p( I1 q  ^% y6 W
  called by procedure GO
6 D2 h2 K% f! WOF expected input to be a turtle agentset or turtle but got NOBODY instead.
9 ]& A. C2 o) U1 \5 r  E4 g5 p
(halted running of go)
; [) J! e4 @( s# G  J. ?$ _' p: L, s
- G( S! V. B# Q/ }  k$ V  ^8 r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~~
/ x8 T. [/ K! E, Q* v% ^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7 c, D' T7 ~* a8 {5 Q8 D
globals[+ s, w, M" g& m: n  `2 f6 t$ `
xmax
  h: i3 i2 T$ e. M+ D0 o/ vymax
" L' Q4 g0 _' P( A7 B. Y3 zglobal-reputation-list4 `0 r9 f9 N2 u' _7 `; B

' P5 s5 M5 G. j! M* |! R;;
每一个turtle的全局声誉都存在此LIST
% r! ]" s7 p, [  S, U0 Y# a% ncredibility-list
$ m* X8 i. C. @2 X. x$ k;;
每一个turtle的评价可信度. }4 p/ u; M" C: Y' l9 Q
honest-service
4 ?3 F. c8 M; I" f* m& munhonest-service
3 \1 c1 `" i! C( i8 Doscillation) R2 s- y  z' X' h( T2 T: L0 |
rand-dynamic- S; u$ g. H) k% ~) B5 o
]
9 I; |1 f. y) _( ~9 O" M! p0 h) T# f2 g' ^2 f+ L- Q5 t
turtles-own[
7 v% I* I7 y* O8 I/ Ltrade-record-all. F" j9 ^* ^# C2 `5 H
;;a list of lists,
trade-record-one组成1 N8 I! h% A+ l( y2 V2 q% v
trade-record-one1 i6 U0 d3 K2 s: D. w% [' J! N8 J! C
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
4 F$ H0 ?9 O1 _: O: D& s: c8 K, B$ L+ q' G# Q: r, z9 Z  o8 }
;;[
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]]6 e* r3 J3 ^: S* C  K2 D8 d: `
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]
  E6 D* G1 C" R( D& ocredibility-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
! o2 t+ {8 d& }neighbor-total% ?- {3 |: ], l3 L& L1 w7 |6 f/ c
;;
记录该turtle的邻居节点的数目
* K. n8 g1 g" M8 D0 K, R9 H3 jtrade-time8 u' T+ ~  R& a4 v( B# e, x4 V3 j4 J! q
;;
当前发生交易的turtle的交易时间
+ k' J" N  H0 `" z4 t$ Y* Rappraise-give
: U. J) B- D; V4 A* n% B0 q( d# D;;
当前发生交易时给出的评价
( n( V' o0 U  I. i- j2 F( Kappraise-receive/ Y9 b2 k  N, v2 R$ X. j! y9 D
;;
当前发生交易时收到的评价1 e" R& T. h# d; K0 {7 d. p
appraise-time' ]* Y/ s/ n3 {! F& w; `" ]5 q
;;
当前发生交易时的评价时间
; C; H1 O5 Z, M8 K" P# k; ilocal-reputation-now;;此次交易后相对于对方turtle的局部声誉/ z+ t2 p/ U: V; }* Q! t8 h
trade-times-total1 B/ m2 b7 o+ M$ T, z
;;
与当前turtle的交易总次数
8 L* g; _3 F# X/ Ztrade-money-total
* h9 i7 K6 h1 d4 ^# U% B;;
与当前turtle的交易总金额# L; P3 \  t3 W) @
local-reputation
) x+ K' _1 K1 H! |$ _3 @global-reputation
$ N5 T% M2 c, w& l. ~6 Q) d0 b+ Jcredibility! N8 ?9 p+ U3 C  \
;;
评价可信度,每次交易后都需要更新# P; i: b$ I9 h9 J. x
credibility-all
2 S* I0 x7 O! e* ~;;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
$ `. G! a) a, z) l: r! `1 b7 A7 f! F4 U$ Z' 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
1 {1 \' k3 y8 pcredibility-one
( v# ~) Z  U5 G  F# 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* W* ?5 U' W& G6 Hglobal-proportion% W: l# o* w) ]( ~$ I: c8 s3 p
customer
0 B( |) x4 c2 k2 L% acustomer-no4 `* Z1 \; N8 l" ]5 R4 z- G( |6 m4 M6 W
trust-ok
9 o" g$ r" H* Z5 v% J" w# t, Jtrade-record-one-len;;trade-record-one的长度+ L3 k+ d' c2 G7 @* V: m& ~; v
]0 u0 v; X. H1 U( ~4 s
: z# p. b9 Z0 z
;;setup procedure) ?  g3 D7 t. s. l. y8 R

9 H5 T$ w2 |) L+ n0 b- b. Zto setup
" O; m- R; _; e( a$ ?6 R$ b! [5 j
/ ^. H: {! D& J) V5 f( Zca

1 f, f1 o* I1 w$ d, l) _" f5 U3 _4 a5 g+ y8 t$ w8 u# {
initialize-settings

; T+ M0 o2 x/ j5 h7 J% A) r% \$ {8 P9 Y. K2 K% y% t. B
crt people [setup-turtles]

: u2 p# `- e8 y" u  A$ V2 E& h) g2 V
reset-timer
7 x0 K  [4 Z+ k' z  V8 l

) L1 B6 i& }9 spoll-class

8 G6 S; L9 s  B1 E( T3 Q5 c; T! r! t# N" e
setup-plots
6 q$ d% m% X7 V3 ^# Z
/ R+ ?+ ?6 N; j7 a6 a, J! }
do-plots
6 w! y6 j3 V& l  W9 C
end
# x9 t) {! x! e/ z, Y2 S+ F8 i/ s" g
to initialize-settings
" O/ `  c, W5 _8 y5 Y2 T- S7 m- s' s3 {) D' k0 C
set global-reputation-list []
& @7 h3 \2 u1 v+ ?4 n

7 m* `" \% u, c3 L8 s( yset credibility-list n-values people [0.5]
: }' ?7 n, T. j1 P6 \7 o7 _

' Q& c8 C  M' y! p+ S' |9 @6 |5 zset honest-service 0

; g3 E7 ?! O- j. P) k1 d
( e. w4 Z3 l$ S3 A% B& B$ Gset unhonest-service 0
" U5 W! D3 a1 B& m- z
/ D7 o1 L5 n( A" V: l. F+ l
set oscillation 0

& [0 k$ \; q% S5 f) t5 L4 U, }/ J- k5 ~1 d, c
set rand-dynamic 0
- c3 Y8 W4 g2 r+ v' _
end
( u' c4 e; r, I4 v. }4 ?0 h" l3 c, B' y
to setup-turtles
$ n. Z% ~$ [' {0 v5 B8 ?set shape "person"
( [- \2 ^* W# N7 s" T; A; l' [- z' csetxy random-xcor random-ycor3 B) H, M) T  {. J( h  A1 y! D
set trade-record-one []& b) n- M3 ?1 R/ J  B, u

2 W$ K4 q9 d* R- O, i* k/ K, Sset trade-record-all n-values people [(list (? + 1) 0 0)] 9 Z$ I) a7 {0 A

( s9 j6 b4 b8 @* Eset trade-record-current []
4 J( H0 G* M( G4 sset credibility-receive []$ ]; y- Q# L/ |2 F
set local-reputation 0.5
. f  m. \8 M- P9 ?' A4 M2 \set neighbor-total 0
" c) S0 a7 f2 ]& t& j$ m; y2 y0 Aset trade-times-total 0, T5 p! ^8 L3 x- w, R
set trade-money-total 0/ n! X) Z1 l& _" b# R7 B' e, {/ H
set customer nobody
5 [# `( r7 @/ G5 W" j) C- Lset credibility-all n-values people [creat-credibility]
$ [& Y3 R9 P% k$ z, Q. `set credibility n-values people [-1]
& O# O: Z2 D/ K3 Kget-color
7 Y6 T; o( Y! x& Y" u
: }# N7 t/ F- g( x0 A6 e& V
end
& ^# u- W& d/ v( Z. D9 k3 ~* @/ D: z; _: T1 `  ?+ |' c4 `
to-report creat-credibility' `  C0 j9 }' n2 B
report n-values people [0.5]$ M" D$ _6 _& \
end
0 C2 u4 G5 x- }% P- j& F7 G2 V7 C6 U. D! s9 @; U" q5 Z
to setup-plots. E3 G+ q. K1 w3 {
) t' W5 O. ^, _0 r6 b
set xmax 30
: B6 B" }4 s! J

; M: C# w7 \6 C1 Q, a7 E& cset ymax 1.0
1 D% V& }; l* t* i, n3 b
& D! G7 G  k, g, ^- p- k. ?  i
clear-all-plots

7 s, Y# g8 p5 m% ^0 H4 Z7 ~  k% Q, \, r# |0 j2 ~- Z
setup-plot1

. u# P0 I4 ~- S) ]) o- k# Y  T4 o7 s1 {4 \# z
setup-plot2
' M! f+ r6 l( `5 S; R7 r1 j

' L3 {& F! ~  f! x0 ]5 ksetup-plot3

/ c( E! n5 {' {% I7 w; P. e% dend. [8 V4 D* a. x3 X5 j% X4 B& ^; R9 [

- u1 B6 l& W4 p9 W* g;;run time procedures
) _- K( Z  `1 Q! x4 @
; K8 O6 O6 @0 R7 s2 _to go
; g0 s" q. k1 u( ?0 }" @6 T* \
/ |( z6 ~7 g' D8 S- N- gask turtles [do-business]

; q4 d; Q9 V# Fend- e$ u  }: q7 `+ l0 }
; ]- g' ~. f( E
to do-business ; J' ]! O7 E6 Y8 `: F6 s

: h$ a( ]" v9 d, e+ N* p3 ~" l
1 u" x- e$ \- H+ o, J% @rt random 360

! P1 G9 i0 g' v( x: A7 d0 o% ]% P" R  }1 D- b' \( D
fd 1

* o' E: J1 I; k3 B8 X, H; `; y) Z3 a7 Z& c" m& b0 P
ifelse(other turtles-here != nobody)[
& u8 k% T2 m/ q& e5 p9 Q4 }2 K
9 f* \0 x9 i$ N$ E( [
set customer one-of other turtles-here
# L4 K8 c) x# D9 P- O# b) _
8 a. O# P& q2 q7 f
;; set [customer] of customer myself
# @( ^- F: m% b' Y( x6 Z
3 x& G* f7 r2 h3 q6 m1 s! ^
set [trade-record-one] of self item (([who] of customer) - 1), \) J# V0 Y& ?
[trade-record-all]of self9 ~( q) K1 C1 I$ U
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
0 h* {8 j* ~. y- z  S7 x
( ]* v6 W- o, I; Z# U
set [trade-record-one] of customer item (([who] of self) - 1)5 H4 ]- f  `7 C
[trade-record-all]of customer
: \5 B3 I  X/ b7 p! v# x  M" i

6 F2 s+ v' k+ d3 Mset [trade-record-one-len] of self length [trade-record-one] of self

; q$ g" [/ o) o: g1 r
9 v1 ^9 u1 R+ G% k( e) aset trade-record-current( list (timer) (random money-upper-limit))

9 k9 Y! X% j* k9 b& S6 w" u8 e$ I* l2 p) G2 Y
ask self [do-trust]
" r' Y" o* w2 n; A& X;;
先求ij的信任度
* `' a0 F! o; r9 K2 o! E7 N9 [$ H2 N$ Q# o/ M8 d, ^- }
if ([trust-ok] of self)9 d, c7 y3 B/ Y9 X; W8 F4 _" Y5 t
;;
根据ij的信任度来决定是否与j进行交易[
' q0 ?; j- G/ |5 ?ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself  _' b9 S! s( W4 z

% s7 W( Z$ q' f4 w9 l! }+ F[

& k" ]' d8 ?$ L4 [
; |4 N" H. G! ]1 B6 }do-trade

% y5 P* V: \$ v# F/ ^) [& @* @8 {' O2 Y7 O: k( i! c8 @
update-credibility-ijl

0 x6 f, s/ k: V! ^) F" |! R' D! Y# i/ ^( R7 [, ^( u
update-credibility-list' X+ N4 D6 R& z6 J) S1 _

. I6 \/ x4 @6 i! ]5 @& Z% b' t2 I6 c/ \0 C+ Q" |6 i2 m1 n% t
update-global-reputation-list

' [# q- f& P! V# P/ ?+ y  h% K
% ^: X" n" B" m" A, b4 H+ kpoll-class

+ _0 H, n1 J; H+ i2 |  F7 |% R- z0 Y8 W: K5 I( P) |
get-color

9 m7 V" o/ }% M" |
2 ^& a1 v; T4 u; i& h]]
& H8 I) f, I, Z( f+ y3 w' n, E: l' \  o7 I) W6 L" y: h; k4 x
;;
如果所得的信任度满足条件,则进行交易
& Q& q* b: p2 l  F/ V% y8 l3 P! D+ T0 I; ~/ t
[
: ^0 i+ l0 H. Q9 B

, V( |1 S4 t" o1 trt random 360
: Z3 ~) |* |1 N3 a6 q; j
# s& g" m% n: R) C9 v% V
fd 1

5 ]) E  c0 `9 f+ {3 N. n( E; A9 x# g# v' n5 H) O1 H
]

( o; a0 z5 u5 B. c# X/ g& V( w4 l  J$ d1 \9 m- M7 x
end

3 g( S' G: d* M0 I* a  Y( m0 p2 l
to do-trust
$ Z7 n9 D! W' F+ x( P* Nset trust-ok False! x# c5 w* V# V, h

! W# V8 c" P" h& b

/ r1 N4 Z( B; k  s3 @let max-trade-times 07 V2 ?; u8 c# ~9 [
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
) U+ F3 u( ^' jlet max-trade-money 0
+ D) ?; N% }; Q0 V6 g: D5 aforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
2 N2 \7 w; T* J! m! n0 V$ Alet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
8 {- {" Q: G6 S. M  I* @8 W* |  D# E

: k* ], i: Y7 F% ^/ y' eget-global-proportion
1 z7 I! z9 w# }0 ~; ?let trust-value( N  S/ q# }" h1 g
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)
# c+ Q8 c+ s( k$ y* d! s; }/ Z
if(trust-value > trade-trust-value)
# O, G3 M3 V: n  O/ D[set trust-ok true]# K- c# [4 k% {+ z+ A# G0 F
end2 e' q- i! p) Y. p0 r
4 x2 R. q4 }) @
to get-global-proportion
% r4 j; j  N0 Y3 w! zifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)7 @7 }! R+ w0 A' J
[set global-proportion 0]5 u/ W+ k. w( ^% [
[let i 0, e/ @( C% q3 P
let sum-money 0
' ^; R8 K, g, C$ Wwhile[ i < people]3 z+ `* A/ w% O* w
[: t( j* V9 s' J. h6 |
if( length (item i
+ E- ]  P6 c6 X7 t[trade-record-all] of customer) > 3 )

* ]4 K' I! {6 a# {* X[
8 p& Y+ I0 D# z  z3 Oset sum-money (sum-money + item 2(item i [trade-record-all] of myself))8 r* R3 Y8 O% o
]
/ G# e* m5 w$ [' T4 @- ]]
, j7 j, W; F& K0 ilet j 0
0 ?/ M$ g/ _! b: ?4 Jlet note 0
8 o0 F8 @7 r! x6 E( Cwhile[ j < people]
- K+ x( v' ^5 V2 B( w- l[
( J# K# ~. W9 ]if( length (item i
* ~' f2 e% W8 s, A0 V[trade-record-all] of customer) > 3 )

' U4 A- s' V; m; [7 a+ ^9 k[, a3 V/ e9 V! ^8 M( U
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
- f8 n8 f/ J0 F2 A% t[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]* t: _. J# ~0 R7 W
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]5 }0 S- w) p+ W  A. d
]- m' i% o3 _. v. o- P
]
5 R/ ?! o. @8 bset global-proportion note
; i  l5 i/ B. |/ U( Y0 `6 ~]
% _& N+ @. A4 O8 ^& T( mend  c- e: c8 E( F9 d; P. ^# o+ c

3 B! R6 }4 r, ?$ R6 ito do-trade+ Q+ p3 q. J1 P4 t0 F. n
;;
这个过程实际上是给双方作出评价的过程, q4 Z2 R$ U0 l5 S) X1 f. V! Q' o
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
, |- w3 M* S3 _' x4 ~8 {, L8 Gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
% C# N+ Y9 ^  X* |" `set trade-record-current lput(timer) trade-record-current
7 S0 j4 M# D, o, U: U;;
评价时间  `) k. m* ^/ c) X/ N5 N
ask myself [4 C$ V4 m9 n& d" A
update-local-reputation8 G" }/ b# X3 X5 z8 D7 t
set trade-record-current lput([local-reputation] of myself) trade-record-current
: g0 n+ r7 R/ x  v9 [! Y) s]
6 t! i# _; v$ L1 Xset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
* o! X6 r3 v' |3 e* I; g;;
将此次交易的记录加入到trade-record-one7 R9 g# F$ o+ Q
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)% `1 ^. E' n2 o
let note (item 2 trade-record-current )
2 b" J8 }9 {# x" d  X9 A: zset trade-record-current6 e! D+ G& C* K$ o
(replace-item 2 trade-record-current (item 3 trade-record-current))

+ v3 X+ l6 d& u: ]  C: Iset trade-record-current
+ l: q2 b! F9 K(replace-item 3 trade-record-current note)
, M7 Z1 r. l$ E! T, t4 l4 n
8 d* g. A0 w7 W7 G* [$ X, y4 I$ s( ^
3 r2 A0 J& y, O1 q+ J
ask customer [) c: w- w7 ?, y* B
update-local-reputation" `. t9 F7 R. I3 _
set trade-record-current
% C* C0 H8 d9 U7 q; ]& Z3 V4 i(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
0 i$ v) G# _/ v' U% j1 O
]
" `4 C$ u+ {2 D2 A# C% R. Q+ r: {
1 p+ D4 D# ^' y, Z' t2 _" v9 y6 ~

2 a/ F* J6 [. j; eset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
( N6 I! c/ |( d8 o

& k& V& A: ~; I8 mset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
- ], e) R) y0 L;;
将此次交易的记录加入到customertrade-record-all$ H! ]! D' i* |( y# z2 G" [
end
8 I8 ^0 q( n# B) ?" ~5 x9 J0 _! n
to update-local-reputation# @& _& @4 P4 }. R: C: T
set [trade-record-one-len] of myself length [trade-record-one] of myself
. j. Y% M4 @9 N/ C0 z8 I+ C, M: D2 d4 c( m8 W5 f8 @) n
3 I' q$ @+ c, I+ \6 s
;;if [trade-record-one-len] of myself > 3

" B; p. n" p- o( Supdate-neighbor-total& r9 [  D5 m0 c3 W. R$ [
;;
更新邻居节点的数目,在此进行' J- ^$ B  b, N
let i 3
$ {4 u3 c/ s# t+ O* `0 Alet sum-time 0* E- r: B+ ~% O& D9 O2 e' R- Y
while[i < [trade-record-one-len] of myself]3 G( p) V0 E- x# `1 e
[
. U+ _7 D- l: a9 `set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )  \8 _1 r& @; ~: P5 u3 X: l0 U8 ?- _
set i# n; _4 s5 M% u  r
( i + 1)

8 V6 z0 `6 |6 y+ d' E], J' C0 g; }: n( c
let j 3- L+ n: z& P1 s; N( r8 r
let sum-money 04 ?7 g- k( d  g4 M
while[j < [trade-record-one-len] of myself]8 H/ K  o5 Y0 z% X6 M+ Z
[2 W" ?6 }- x& X9 r; e
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)
1 r* }  S9 n' B6 s  Y1 D6 \set j: b5 o3 L6 W! A( u* u8 ?$ u8 H3 {
( j + 1)

# }/ {3 @  G0 n]
; D& m: T* U; Q, hlet k 3" b$ @" p( ~: Y( Q9 ~% |4 D
let power 0
2 R! X' p6 _" u/ A; o5 U# J4 jlet local 0
3 n& }, i: Y, d! Dwhile [k <[trade-record-one-len] of myself]
& {5 J+ w8 I6 H4 H[/ t4 m) M" }  }7 c+ B+ L
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) ' F! X/ }! E9 K* t) n( Z
set k (k + 1)- v* {  `  V: ~4 g1 {
]7 \% [, f4 W/ u6 H' t( V0 J
set [local-reputation] of myself (local)
% I8 a1 H9 y: O. z0 D% w, Bend
( n/ N) b; }! f9 E: t9 m+ s& j5 u0 C, n% Z- ^3 ]
to update-neighbor-total
) v3 N" a9 q6 N$ b1 C8 T
1 Y( L7 Z& P7 h- b; sif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
# u% o$ |% \* r* H5 ]
0 t4 X' [4 M/ c) n1 V
, @* C3 h9 S) o+ j9 ?, {5 |! u
end
* }1 S+ E, v; |/ [# l  W& ]/ k
; c2 l( q# A) E: ?. A# Rto update-credibility-ijl
" N5 R4 W$ V9 f9 A7 n- K& c/ y* \( ~/ S/ z8 U' A
;;
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' o9 O8 k& Y
let l 0; F9 K  y+ X8 D# j& T8 E
while[ l < people ]7 ^4 x8 ]$ W! S5 w+ n/ W
;;
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% T" X9 }0 `: _# Y4 G4 Z1 _, |
[- Q5 L3 A/ n# E
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)8 }: ?! C4 o( \3 K
if (trade-record-one-j-l-len > 3)) {# s1 \* X4 s6 d0 G  z
[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-one3 |6 x# l6 d" N; r9 m$ |
let i 3: _) O& U5 b0 B% Z* v
let sum-time 0
3 Q& H" B) a, y5 L; ]4 q& ?while[i < trade-record-one-len]  I* I  J" m7 `3 D' b
[
0 i% h0 \: }7 W9 ~% |" tset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ). a# H5 ]- P" P+ T
set i
1 t1 |+ |  R, P+ k- i( i + 1)

) j6 A0 X$ P4 C: X5 C2 ^) x( M]
0 {3 w; v" ]3 t" h* @" Plet credibility-i-j-l 0
7 o1 Z" U4 ~3 E6 T: C' Y;;i
评价(jjl的评价)
% C5 _) y# Z" S" \1 z  [! Zlet j 3# |5 V5 F5 f" Q2 ]1 c9 [$ c# s) T
let k 4
) |" V; s, D- g5 ?6 a8 V" ^while[j < trade-record-one-len]
, e  D5 g7 N& v* E! H7 y9 K. L4 i# z[
4 n1 z! }( R, g9 }$ S, c2 R; Pwhile [((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
8 F  b# j. m$ x/ Eset credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
; ]8 U5 F) H% Cset j
* Z: w) F8 E2 `; I; l( j + 1)

$ g; T2 b4 N7 g; p9 x]' \6 K5 t* B, H' a1 C
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 ))
7 L, ]* q& J) |% ~- @; K) x
. c( j7 X; T' Z$ A' M' M

7 b2 p3 L7 f  N4 G% `6 flet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))  x) k* b2 Q0 f2 j) h2 ?4 G: L1 a# j# d
;;
及时更新il的评价质量的评价
+ c6 `: i7 _5 ?) qset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" _7 W( Q5 T* lset l (l + 1): p! U' J- X3 c6 _& B* g6 ^
]9 \0 u! x- e7 V6 q; b, t7 u( r
end
! R' |' E9 j0 N
/ C9 P' j6 x" n7 H6 @; [to update-credibility-list* u5 J' s4 {9 Z- _$ A% D( E
let i 0
; }! i* p6 r( jwhile[i < people]8 |$ d# ^  O( l; P1 w% B: {9 k# Y' _
[
- a% ~" m, c& Llet j 01 `" v/ J$ _6 Y/ P6 y  O9 ~
let note 0, v) I7 `8 E6 p3 n, m/ _  l* e
let k 00 M5 P0 i$ |& @) c. g1 |
;;
计作出过评价的邻居节点的数目7 {- W9 \* T/ m3 K" O
while[j < people]
0 F( i+ a% l2 {9 c1 E7 p[
  t4 I1 P7 [" D8 l/ X+ Bif (item j( [credibility] of turtle (i + 1)) != -1)- S/ g* Y. [* r
;;
判断是否给本turtle的评价质量做出过评价的节点1 E7 P  c/ E2 n/ d- E
[set note (note + item j ([credibility]of turtle (i + 1)))
0 Q3 y* q: a5 ^0 ]6 x5 x; D% H;;*(exp (-(people - 2)))/(people - 2))]
; z2 u2 j0 p) X- R" Q& q1 h& g+ |
set k (k + 1)
9 x  |1 @9 k, }5 Z9 n& N]
. x6 Y8 H) T- G4 q4 n9 Wset j (j + 1)! A2 O7 d% a+ p
]
. b# y% E6 t) \# ]" iset note (note *(exp (- (1 / k)))/ k)! v1 D5 V5 m  G9 D" Q/ X! d8 j" E" l
set credibility-list (replace-item i credibility-list note)
- [% h' ?+ X# w7 c/ a+ ~8 g  Kset i (i + 1)
5 F# f. U% \+ ]]& S  H" l0 C1 h0 O- _. h+ p* @1 l' m8 S6 s
end
/ `, K/ [( }4 r& F& T0 t0 X2 |- L  r% m$ e
to update-global-reputation-list
9 x: N2 s4 @9 S+ c  P4 plet j 0
) O0 |- z" B: I; gwhile[j < people]8 K" `8 M% u0 _$ U' N8 }" R
[
* v, X% V( Z7 E" ?4 d2 S5 e8 [7 p+ `let new 0( w) U# ?/ \2 r+ n
;;
暂存新的一个全局声誉
, X2 }" [6 ?( p9 Mlet i 0
  u( e5 T& j" _, Y- plet sum-money 0
, D8 W) J% t3 glet credibility-money 09 e4 ~4 o! Q2 e0 ?. [& Y
while [i < people]
7 @) O9 |' M. |[
  P  S; J5 ?! Y- n9 l  Oset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
1 n+ X2 f/ O4 Q$ i1 X6 {; H& Z( l. Gset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))6 O  Y1 r# f# j: v$ \. {
set i (i + 1)
6 t* z+ |# ^) `2 P]0 k/ K, X# c2 N$ S% h( o6 ?
let k 0
+ O' m6 L& v' _0 u" wlet new1 0
  z+ [/ @! t. I! X* A7 h4 C, Zwhile [k < people]# |" {" q' m* i3 k# e9 w7 f
[
9 u2 I9 E2 X5 L1 iset 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)
5 H. n0 Q1 J' e) ]" R8 H, Uset k (k + 1)% i3 \$ k5 }2 Y& ?6 l& c
]4 D# K0 p# e6 a: S: i! ?5 x
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 7 v6 g! M/ E/ m6 K6 d
set global-reputation-list (replace-item j global-reputation-list new)+ G6 J/ Q. q/ \
set j (j + 1)0 O4 t# a2 V; J# V, t# ~8 R# W- T7 u
]
/ g8 |2 ^7 ~1 T, I, J9 t2 @end* v: ^& z! M$ }/ I; W
, C  c  j6 Q6 F$ W6 @& X$ U

3 |- E9 K# F$ A8 ]( L: h9 W9 z- ~  Z: Z- ?3 Y& k# v7 C6 ^* H) a
to get-color
( K* x- Q# X) I: B# B( }1 n3 ]
: ^7 C1 W: M$ C( M+ f0 h* x0 Hset color blue

" `4 Z2 _7 L' d8 l5 Q; c5 Rend
8 ?% J9 j2 q: G' |7 Y
; o( V# i* Z" ^7 u; r9 Oto poll-class  r$ ?+ u3 N" G8 B2 \
end
/ O/ f% w, T& Q+ B3 u9 S* s9 z* ~7 _% i; Y; `3 T2 C
to setup-plot1
; m* ~4 ?/ O' E0 [; {  b( c3 K- U2 O) c& v5 h( H
set-current-plot "Trends-of-Local-reputation"

/ x. P4 p% m* [$ P, a# b% t% ^  `# R) y  k9 S3 k# V' X9 K
set-plot-x-range 0 xmax

9 l+ j0 u: L2 S2 p9 y1 o0 @. J
, `1 {! `5 ~" H: h# I! Uset-plot-y-range 0.0 ymax

, E5 |$ s, }" a. D6 pend
" d+ b9 X3 p) Q; d$ \" w% e8 v3 a9 B2 N* u9 h
to setup-plot2- m3 l4 C, i+ \( g* P
5 J: m0 E; A: n" `7 w; w2 {
set-current-plot "Trends-of-global-reputation"
/ W' G0 d2 [: ~* w2 P8 @

: N, r2 K9 Y* }2 W& `set-plot-x-range 0 xmax

  z$ o6 s; a' n5 `
8 Y9 f& s: y, b7 Z9 s6 j5 gset-plot-y-range 0.0 ymax
, \+ t7 d9 Z7 k" Z8 A: B) ~
end
( W5 a& h+ z, y( g8 A  N: {2 U0 v* R9 C" d+ \
to setup-plot31 u- h  H+ s3 }7 k% m- b6 a

3 o4 r" l1 G5 w" yset-current-plot "Trends-of-credibility"

4 b5 Z+ h- j& |4 q& d* @
2 A  l9 h0 |! U8 V' i9 w6 i6 Xset-plot-x-range 0 xmax
6 r9 X9 J" b9 V" T0 T
1 @+ `3 O2 z! v: ?* e% @
set-plot-y-range 0.0 ymax
$ s9 u$ O- Z, D$ W
end
) R& T( u( s+ I9 j9 ~/ h% l5 }/ I7 D; N) d
to do-plots( L8 G6 x+ i/ X8 }
set-current-plot "Trends-of-Local-reputation"
' w% p7 W9 A1 `set-current-plot-pen "Honest service"
  m  @  ~: D- ~8 j# ~6 `end4 S! |2 ~- Z9 f/ z6 C1 H! Y7 y

3 n5 ^+ C9 Y, h! h. f[ 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.
9 N; t" P& |* [- g7 i* X; R) B0 d0 A3 i1 S4 {9 V, r+ ^1 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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