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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:) _7 X! Q- Z; C; f# h+ @4 t, s
to do-business 8 v6 e0 |& Y8 S5 Z4 F+ N
rt random 360
2 m. V/ O! I: |; ] fd 1
3 v& r( e: m$ g9 i- S$ v ifelse(other turtles-here != nobody)[+ x+ I. b8 D+ y; B
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
0 z9 B8 ?+ m! b' v+ h& I   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
* ~& y+ j1 ~+ H& E( `   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer8 A+ f+ c# P. o2 o+ g. U
   set [trade-record-one-len] of self length [trade-record-one] of self
! h* t4 h1 ?, K7 I# l$ |   set trade-record-current( list (timer) (random money-upper-limit))
  _2 _; a& ]2 X, j
& O7 K0 A/ J$ L6 g& U3 y问题的提示如下:
1 c& ^0 I. S: b/ S2 G: [' F0 O0 Q+ ~, X& f# f4 \& g
error while turtle 50 running OF in procedure DO-BUSINESS( F) c3 |; ?) u  ^6 s/ C2 S9 @
  called by procedure GO
* I. S1 p* K/ d% i- E0 h& yOF expected input to be a turtle agentset or turtle but got NOBODY instead.
; B* I- H. X! n" @; m- X! H
(halted running of go)
- P' }" f4 {8 k  @! r
) |% ~4 m) Q. Q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~~: ]$ x# h. y+ z- ]7 f+ U
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% O. u8 g8 q8 a
globals[
2 F" O0 P  v0 Axmax! K+ e; @; p0 {) T" A
ymax
; i4 E# o6 V' X0 O! m3 sglobal-reputation-list" \( O1 z/ |, E1 y# \2 x+ J
( J8 V" U( J. g4 S
;;
每一个turtle的全局声誉都存在此LIST. i1 S4 x: O* B6 M) c
credibility-list' I9 I, z  [# h4 m( H$ Q
;;
每一个turtle的评价可信度
3 l. }8 r. |8 _honest-service
8 ^& v% Y" ]8 d$ d8 b6 `unhonest-service, Z: L  I# j  A, E% h& z8 N7 b
oscillation
3 n6 o) C2 L0 x6 rrand-dynamic
4 y# y% r" I# a, F, f8 M: n]; K4 s) Z' G3 P
, Z+ V2 |1 k; [5 @% b8 k
turtles-own[
" n) u. S& A) i; Vtrade-record-all) |7 \- n8 M6 j0 v. E3 A. r1 ~
;;a list of lists,
trade-record-one组成- B; f1 _! }2 a7 ~) s% P" h
trade-record-one/ v4 d5 f' ?  j. b: l, _' G
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
# x$ d, }# g# U1 h# y
; O% t& \- P& e& O& {* T% b5 Y;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]" S- t$ b+ n) ?$ R$ p) Y' @* O( m  d
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]% I) Q1 k- u7 \) o) g
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
4 Q( F0 s" t' Xneighbor-total
) A. e( k- b) [2 B;;
记录该turtle的邻居节点的数目+ k9 m5 r* K5 _' T: R
trade-time8 \' d; S$ s$ |* e
;;
当前发生交易的turtle的交易时间
7 ^) E" V$ B/ v* ~appraise-give
; B" z+ J9 z9 _6 Y;;
当前发生交易时给出的评价
, x4 ]$ k2 }  r. M0 i, B6 W6 P" zappraise-receive4 y: u4 R, B, ]
;;
当前发生交易时收到的评价: @' L, d5 R; \' }% D
appraise-time- t& ^( n) k4 a" E- @* V2 x
;;
当前发生交易时的评价时间
  o0 ?2 ]) d1 o5 c( ]! c4 blocal-reputation-now;;此次交易后相对于对方turtle的局部声誉( J  O' V8 i+ p5 h2 z5 v
trade-times-total
& L' k) @9 I+ I. q& R0 S;;
与当前turtle的交易总次数) K* `1 I+ Z  O) p
trade-money-total: y1 T1 R) x- o3 s5 \+ |/ J: W9 l
;;
与当前turtle的交易总金额: L* m' R6 p: e, N4 r6 i
local-reputation+ r+ l% H) _3 l6 @# {
global-reputation- C. z! F3 Z$ m( p) a# }, _+ m
credibility) ^2 V' t: F6 |0 L) F- n
;;
评价可信度,每次交易后都需要更新% e% K4 Z7 P* x
credibility-all
1 V# E. G% e* L) 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; y) |1 O: q3 ]2 {  I( ~# P( m

8 l5 n/ q9 t  O4 H+ c;;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! y) A- X( `5 ], k4 y+ y7 \
credibility-one* K" E0 d2 s7 ], i" N
;;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/ G( t  j1 k1 q* f, C9 f; B' f4 @6 M
global-proportion: t: z3 {. q' V# E. @0 {7 I1 \6 \
customer
7 X# N' |4 W- qcustomer-no' p5 M7 J. ]+ @. ^
trust-ok
9 b- r' u' S. F! M( d3 ztrade-record-one-len;;trade-record-one的长度. j3 b  |' j0 @: W6 W3 I; V
]( W0 s7 T+ J; B6 [' I) t
# O5 m  S+ {! x! a7 R+ ?" h7 O
;;setup procedure+ I" h) `- N  H- H! v
. c2 P1 ~' t* L& d
to setup: i# f. {, C. A+ H

/ E5 Q0 R% o3 y8 J! F  Xca
# v" m. |& ^6 d$ W
: T. H* r1 [. U1 n: H: V
initialize-settings

& d; T0 l8 m% B6 |, x# ~
, a( R: L4 `* C+ s& |crt people [setup-turtles]
7 ~7 |* K. g4 Z' B& h+ X2 j

( ~: J, I/ d5 lreset-timer

; ?7 C, U9 N/ B2 c
; K& j8 N, `. S; A  e0 A& M" q- wpoll-class

, a3 _% q- |: I4 R$ |: L& n* {
  H3 Q  P( ]  d4 A3 Z) Usetup-plots

- `, b1 z* Q7 Y" A% J5 |2 _1 i4 w" F; A
do-plots

( l0 b2 _) S5 X: O( j) {5 L# Yend
& _9 T/ f! S1 L  s$ \: c" l
; e3 _, w% m' X- W0 Eto initialize-settings
4 ?3 x! i  F& {7 z
" q+ x  P3 n, z8 T; _set global-reputation-list []

8 w" N* k( H6 L( |& F0 m3 }, E! R
set credibility-list n-values people [0.5]
" t8 i% X( q0 L4 I

: d( c) |' l" v: x1 h2 C- Hset honest-service 0

$ U4 u+ o5 J! k' x/ b4 n4 M5 s/ f1 P' v
4 B( d* y: b5 O7 H! Wset unhonest-service 0
& P& @! X, C4 s4 |/ k0 d
9 l4 d) _  \3 t* E" l6 r
set oscillation 0

7 x+ @3 U( c. G$ F1 |( f. Q8 O, A# S! E# j" c: ^  U; @
set rand-dynamic 0

  B( H$ x$ n" O( Z5 rend& W1 U( R  n. y- k% x0 T
( V" {! \1 Y9 F8 j& C$ U+ A. i* W
to setup-turtles
* N% m2 \6 y8 m! Q) S: s, [% [set shape "person"; a* D0 ~, _, h$ X9 @
setxy random-xcor random-ycor2 l3 W: h5 D  L: ]
set trade-record-one []) q; H  I! @; X& K% N# i+ J

/ z4 Z# r  R, jset trade-record-all n-values people [(list (? + 1) 0 0)] $ g- h0 O$ o$ r" ^+ h; s8 h
8 x( g: B( y6 w; a% K8 ^/ c
set trade-record-current []. l5 I% w- x! d, t, s7 C
set credibility-receive []8 K: k0 @9 K. D) S
set local-reputation 0.5
) C, D; J6 K- Q5 o! H3 R( T) Qset neighbor-total 0
/ O* E4 l7 [# C! G" Wset trade-times-total 08 k+ n- @- W6 ^" K" C% N
set trade-money-total 0
  X% V. [- [) F# [3 P& oset customer nobody
" w8 |# A4 H! a5 zset credibility-all n-values people [creat-credibility]
& H  w( K; o8 |& E, Rset credibility n-values people [-1]; D( O( Z, G" K4 w
get-color
6 ^4 w( k- W6 Z

9 e5 E4 t! P: n5 j. C: _% {1 M3 Yend7 m( u& K/ p% B, n- X7 V0 ]
* }  Z+ t; L/ J! t+ m
to-report creat-credibility2 i/ }% T( C# ~: M# K. T' R
report n-values people [0.5]6 m/ Z; k3 n* j* D: o
end& N; n7 `2 D. r0 z8 e8 U- ]

- u0 D* _( A. ^* ]+ G7 tto setup-plots. @$ E7 B( X  K1 H
% r8 b$ x# r$ @5 `) x
set xmax 30

5 L6 J* S0 a. i& o
7 ~  n( l  Y* u) ~/ nset ymax 1.0

9 l! `1 W8 @' a) g) O: y. ?6 `. |% n% r% f; `
clear-all-plots
8 l  y, A# s7 g8 F6 z

  ?! s+ Q2 x( U& s. [. Vsetup-plot1
/ K1 n% E% N$ {5 w' v. S
& v4 r; k) h- j2 V5 l/ p4 q
setup-plot2
7 a( G5 g: [+ y& V5 m7 u$ d, D
/ ^8 V& o3 _- V& M% s
setup-plot3

! n% N; E" ]1 d% P) W. Jend
! k) }2 ~3 ]: m/ ^4 o7 P+ U8 X" Q& [2 |
' }, R& p9 }1 _# ^9 Y;;run time procedures' U8 A: y, Z! v* v$ [: A* w6 t( N

/ h+ g7 Q* N. k" x( Q/ Wto go' _. Y- \; \2 H3 y& m/ D! {+ j
% ?1 z+ K3 k8 @- U$ z1 q& a
ask turtles [do-business]

! p% `( r7 i9 L  }end
6 d8 k* V+ x$ b4 ]  V% K9 K+ M. }& ^* M, {0 t0 K
to do-business
! d: Q8 u( a3 `. @2 e# l2 Z8 d6 |

& G  n5 c2 H0 v) b( Z* F6 \8 v6 s3 |8 s8 w8 ]$ B$ S* J4 [( h
rt random 360
5 L" w1 e0 `) q" e+ \  }/ Y
& ]6 Q: o! s/ N% y; c+ q$ K
fd 1

! Q; \: }( Q/ A
7 u8 M  q( v% z' ^8 @3 T% {8 yifelse(other turtles-here != nobody)[
* H$ n+ M0 _# Z, d+ u4 v9 g
' Q2 T# ]1 ?; {0 k5 g  ]  D6 q
set customer one-of other turtles-here

( a8 q' |0 T" ^
( y0 T2 O& N2 n4 R;; set [customer] of customer myself
: i7 G3 W0 i; y; C6 c- n5 R3 G

7 p' V4 {; S7 ~2 m: X* ?& ~& `set [trade-record-one] of self item (([who] of customer) - 1)
0 e# w3 X5 _% g& c& j; n[trade-record-all]of self: G+ \* e- M6 ]; S) w# `, {
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

/ t( i' B7 x+ x- [2 T! z6 J; c4 [8 _+ C' j0 _4 c; n/ W
set [trade-record-one] of customer item (([who] of self) - 1)
4 u' q% [# |" @% J[trade-record-all]of customer

" a& h2 Y# }7 u; U8 A* v* }5 o7 h4 @6 V; Z
set [trade-record-one-len] of self length [trade-record-one] of self
5 J0 E( q% O' C

9 V4 X7 i# J7 [% a4 }set trade-record-current( list (timer) (random money-upper-limit))

/ e" y3 P" M' W0 O, s% a0 i  p2 q: ?- ]  o. [
ask self [do-trust]
3 A" r3 h( E6 H  ~;;
先求ij的信任度( o& N# u: c, `3 ?5 e
5 |: e& |/ M! T, A* ]
if ([trust-ok] of self)
* Y( `7 x  w4 e6 q2 T% r: C( n6 ]$ k;;
根据ij的信任度来决定是否与j进行交易[
: I& o5 ~& g. ^5 D) v" Q1 yask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
1 I4 a& u* s4 \$ |4 e5 R$ I. ]
* H6 W3 U( P" {4 ?% Y9 C[
2 }5 f: X8 P. y

: e' s1 O& ~! S$ A& sdo-trade

* r6 s# o* x* o/ Z1 v
: K9 @+ P- D( r( E  u* Oupdate-credibility-ijl

  @5 q5 |: }% y, u9 t
6 }5 `2 [3 H4 `5 N; ]/ ^% {update-credibility-list
4 }  z6 f/ K( y
. c7 D: x5 F- Q1 D$ l+ ^
; w* @/ F2 _: O  g) v4 \2 `
update-global-reputation-list

% q: l, g) [: d( l6 B" o2 ^, `  |3 [4 a# t* T% q( y4 @
poll-class
/ r* N& l7 ^, C3 ]9 M/ D

; a! A! w9 F6 jget-color

/ A+ L" p: l% B  }3 k9 A  L
- P2 {  M, v% S]]
8 A" q7 x, m; @5 E: o
" z: v* V. ]; }0 ~5 |;;
如果所得的信任度满足条件,则进行交易, Z# {$ {4 j( S  J  `  s1 i  s

' h" k5 d5 G$ A8 F' H# p" r[
& D. a  v  B$ n: V

+ G/ C) o* G+ T/ w/ y" X0 h6 hrt random 360

; C8 p* |8 g( q% ]$ }) ?3 X; {9 |% r/ [4 O# |
fd 1
; D: P4 p( P7 x% Q& W3 a. }

( a- K- f0 W9 T5 N# O+ R- k6 V]

: T, ]" P  y: ]1 a
# l1 m, M4 k0 V% C4 Wend
$ h9 O/ Y6 {% r3 L
% ^& ]1 d& d( ~, _$ m2 c
to do-trust $ u8 Y( ~) y! B. T( ]& L
set trust-ok False+ Q0 }( \$ [+ e6 E, S1 X5 N* C
% e+ A. @6 X% h; G  F

+ E% {1 x9 L" b0 }1 T& V% u+ _let max-trade-times 05 x0 O0 F7 [2 e' {, ?$ Z5 m4 j0 L+ n
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]3 b# u. A+ t7 ~2 l/ r/ }4 J5 @+ e+ N
let max-trade-money 0
2 Q/ C% j  |) O1 ?0 d- s, _+ C6 gforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]1 ^# S$ |, ?9 G/ T% M
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
+ {4 p, M! z( Y7 x" X! K2 M) w* d; ^: g3 y+ Y
* r1 U0 z! K0 u! ]' k3 f+ b4 C
get-global-proportion6 q6 z. U) f/ o/ N! K. k
let trust-value' @! N) N- E' R6 ?% c+ `
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)
1 ?/ m& a1 j0 d: t4 e
if(trust-value > trade-trust-value)' |1 t1 n9 S0 ]/ x# c
[set trust-ok true]$ q6 E+ S& X+ [  M' t
end
9 e8 Y7 ?3 k" a/ P: F' T$ f
7 [0 K; {, R0 |) zto get-global-proportion
# C0 u8 n8 L: l1 P1 J; o- rifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
6 s! t! ~7 W  p. A) ~[set global-proportion 0]
- {" I* b5 P5 x2 |" i7 d[let i 0
+ i. g- o7 y$ f7 vlet sum-money 0  Z9 \6 }% x% y& ~$ }( |, a* K
while[ i < people]0 ?: z& I% e9 `0 g: O' E, `1 n
[$ q* p, o- s( s  w7 v" N* ]
if( length (item i6 k; I* B/ \& L' }. C( c  a; ^
[trade-record-all] of customer) > 3 )
. }  P5 `  Q# I$ s3 l
[7 N7 O% L6 C" _4 O
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))# Y5 o' D5 @" O$ Z- D' z& @. M+ ^/ R
]* U1 K/ E& s3 g$ R5 Q
]
* b  x- j, @2 m; B! {' Y! Ylet j 0
0 f1 ^% _, Z6 D0 R7 alet note 0
% c6 d4 m% Z2 m* u# i9 E) Ywhile[ j < people]
0 k  @8 p' X& q. a[
. E0 M- N) @$ K! N' nif( length (item i. h! ?6 z6 K! j
[trade-record-all] of customer) > 3 )

" W3 g9 f& s; O9 e3 j[
7 |8 E3 w3 g1 K6 [; [  v7 }- O) aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
: V; ~8 W! m: ~[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
" Q3 W" t  V$ S" ]" ~6 U[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
/ C: Y* ?( c1 P' |' B]+ F# |: f0 [1 l! C* w
]
0 u9 E  K6 W  U; |; m0 r5 H% Eset global-proportion note
- D* O) E$ }2 {) n], i* q2 K. i: Q9 _' k
end
* d# t; a+ l. p3 y- \. I
2 O# {; J" F; ]; [' jto do-trade
0 r1 \% O) l& y- }% L  H; \6 j. F;;
这个过程实际上是给双方作出评价的过程
& c) g- i6 W. c; W) hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
* p$ Y4 q! M- o/ @( i! ~set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价$ z. e% J& X3 _) R( m; m! e& _
set trade-record-current lput(timer) trade-record-current# v( Y# c8 `* V, p' [/ Z, X- w$ F, d
;;
评价时间5 F# f3 c' w1 I# ]
ask myself [
) f. C: @4 l4 gupdate-local-reputation2 [+ g) V0 ^) z" A( s1 ?
set trade-record-current lput([local-reputation] of myself) trade-record-current8 x) o2 J& D- |& g
]
4 ^( `3 D- H; J. N% E/ B1 `( Dset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself' H2 n+ |8 ]! R
;;
将此次交易的记录加入到trade-record-one' |5 |& ^3 X  Q& @& h
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)9 W4 s# K' x7 w
let note (item 2 trade-record-current )
! Y0 E. ~9 {: O$ v, Xset trade-record-current
5 V' U3 z, A& S* U; t(replace-item 2 trade-record-current (item 3 trade-record-current))

9 I" S$ |: x0 m3 a! Mset trade-record-current/ i( l* d4 |8 D& h: P
(replace-item 3 trade-record-current note)+ H7 a: M+ ]) I" T; S( c

- Q- y& Z& S* A' G7 z( O
7 y9 j7 P$ n6 ]7 N* Z) O% j
ask customer [
' I7 n2 _( b6 ]: ]* @9 j, p# qupdate-local-reputation
, `9 l6 G0 g! g8 p, E5 p/ wset trade-record-current
' h' g( t. {" L" P(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
8 J- V1 _  d( T1 c" b& b
]
$ u2 @( r& [' }1 X6 \% C" l8 L9 l
% y- s$ |; l( B8 ?) A

% P$ K# ^5 ], ~) U! Eset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer+ y- G" g9 v4 m3 `  b6 B

  i5 a5 J! u. l. z1 f8 |set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)): i. m9 G; f: J7 F
;;
将此次交易的记录加入到customertrade-record-all* U6 A, k7 U4 j5 W3 K
end
* h  k" A' ~3 Z( ?4 S( O, r9 \. o/ a& v0 B: A
to update-local-reputation
+ s" n7 s+ ~" @( ^( ]* [set [trade-record-one-len] of myself length [trade-record-one] of myself
5 V. M4 a: K1 I6 X- N$ @2 [6 H$ s8 X8 \! L2 [& m( f
! K# b; ~8 X4 |
;;if [trade-record-one-len] of myself > 3

2 P; o+ G& v2 I0 l4 c& hupdate-neighbor-total
7 \1 b) m" F# H' v! k6 f4 p' [4 E* |;;
更新邻居节点的数目,在此进行, {7 E1 y" X8 ~" f$ a( Z- A1 g
let i 3; u& a0 O# I4 W
let sum-time 0
# M9 \# r& \7 M  H9 ywhile[i < [trade-record-one-len] of myself]
. {* Q' }( M; j0 @* O[
4 p6 \: ^2 U4 a/ jset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
6 H, N  ~/ x  \) q  \1 \/ yset i; ^; C/ h# y# D8 v2 R
( i + 1)
( p# X. e  a) i( j
]5 {4 u- S* J3 f8 [
let j 3% L$ n7 A1 H2 `
let sum-money 04 b/ V2 s* y- _
while[j < [trade-record-one-len] of myself]8 B! f* g0 D2 @* C$ p7 g
[% P9 T/ u- C. u7 O8 b; J/ \  J3 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)" t, i" ]. X6 e/ @
set j% k0 Q+ Q3 _$ h& U0 V$ v1 D
( j + 1)
- v  F9 I( l* }
]
. u( D3 e4 n0 E( v" a  Q$ ilet k 3, D# X$ s4 v4 F2 U. j) d
let power 0
' i  P2 f/ N) z0 }( e6 ilet local 06 u8 C6 T2 [. X- `( n: \
while [k <[trade-record-one-len] of myself]
$ l! {3 l' Q. C+ C& E4 @9 h[6 V+ a. Y9 r5 ^
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)
  g- e4 E0 R$ G: _2 E, Oset k (k + 1)
7 P& @, q& b$ j3 ]) x* ~0 r! l]1 N( o. e: C. U
set [local-reputation] of myself (local)+ j. M# i' g' P2 }4 q" l* T! W; z
end
/ R  ]; ^8 k3 D2 V9 M/ A1 [1 T2 L* K- ?( X
to update-neighbor-total
+ F4 N2 S- z8 S# {# ?! K9 r  O
0 ?; N' A% \9 W- ]if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]" {& h) Y+ Q! E  Y
$ U% h) r( j+ h2 }& H
1 W/ M( S' ~6 I0 g' L0 y
end
; H1 t) g$ h! H2 y8 W& K/ x5 M- M+ }  W& W' ~
to update-credibility-ijl
1 g- X$ i; Q( ^6 a
* L1 {# m; O0 b, g! c, q+ t;;
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。
% v! F0 V% B( w& zlet l 0
5 O0 k$ z& N, B" S) G0 Qwhile[ l < people ], F( k/ V$ I  G8 z2 p
;;
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 T; a4 }9 s3 N- E$ r5 @[. O/ ?- v5 Q/ z
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)  N/ y+ O' B9 N1 c# v
if (trade-record-one-j-l-len > 3)
+ i& O  i- J% h9 R. N- Q1 {, S[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 w; V( w9 ]3 f# n" `let i 3
5 M+ N, |8 O' o+ C6 C* [let sum-time 0
9 k# r- h' S( B" vwhile[i < trade-record-one-len]/ O( `: f- Y6 N6 n" g
[
& l% b$ I# P3 m3 `8 c& R* o* W3 [% Qset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )/ f' q, B. K. l+ }2 r) O4 E* `2 ^
set i; O1 w9 p0 }3 \+ V9 _) v
( i + 1)

, d$ j1 }) E1 ]; Q]* e$ l, ]4 [4 Y/ T6 q2 W
let credibility-i-j-l 0
0 u8 R; h- |! s) _. _, r: k;;i
评价(jjl的评价)
8 @; m! g; F1 q% h* |7 q6 Mlet j 3+ u6 f- ?7 X0 |4 i  v: X) W/ A
let k 4
5 o" T$ F, u3 y- j5 \' p6 Zwhile[j < trade-record-one-len]0 E# H9 j! t, h$ w3 T' F; [
[
  _0 b. B- z" m3 r0 y1 xwhile [((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
1 j4 c+ V3 o8 Z) A( S& Z: C" Jset 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/ Z6 Q% E# e! fset j
  T/ z" [& ^0 o. K2 w; B( j + 1)
& Z/ U- ], z# w+ `
]
: N( D$ r1 T. |9 O0 pset [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 ))# ~& Y6 \- J* ~5 l& d

( o) b1 ^1 m0 N3 I

4 d" B5 @& A- A( o# I( c* ^let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))' s! g5 Q2 |* D* I
;;
及时更新il的评价质量的评价' M+ R8 z6 F7 p3 C6 D: d% U$ k& p
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ], q+ k3 N& s7 i* ?+ P
set l (l + 1); v" |( E8 |) g( ^/ [
]
- I% W6 T% x: y) y2 h9 I  send
7 ~- K2 E: V, V# ^; L; m) h7 s7 y1 O1 a7 x! b
to update-credibility-list5 g  C/ z  D; g/ @. N
let i 02 c% Y# k! v/ X7 e
while[i < people]. J! z* G5 x) L
[$ k9 W8 B$ x& B3 s/ t4 X! q, T
let j 0
$ c$ q1 g0 q7 T4 ~/ J! P8 z( Tlet note 0( h# T; S4 n; W
let k 0
9 e1 ^7 R0 Q5 ~8 Z;;
计作出过评价的邻居节点的数目
( Y( b: L/ p# `6 Vwhile[j < people]
$ d& B: |' O5 T( {! r[6 V/ v7 C# |) S( U1 z, z
if (item j( [credibility] of turtle (i + 1)) != -1)$ n  D9 V  A! v3 n( ~
;;
判断是否给本turtle的评价质量做出过评价的节点. u9 P+ T; f9 S5 o$ B, r0 |
[set note (note + item j ([credibility]of turtle (i + 1)))9 ~9 v% C2 [  t) h5 Y
;;*(exp (-(people - 2)))/(people - 2))]

2 d; V8 C# Y; i. ^1 Kset k (k + 1)9 A% H3 K( \  P6 {
]
# _& D8 J- E  X" ]3 W; Y6 Aset j (j + 1)7 a( i- P* g# |, v
]4 S' z' Z8 [5 J: h
set note (note *(exp (- (1 / k)))/ k)! q! s9 ?7 m& ~1 \' i4 M
set credibility-list (replace-item i credibility-list note)9 w" M* z# ]( {# |& }
set i (i + 1)
" z" p7 F' t" `  o]( _/ E. d+ [! {4 b% \
end! H0 c: T) f6 ^1 M. w3 z" j

% e9 }7 P7 i% U2 ?/ Jto update-global-reputation-list$ |  S  j# v  ?: ]4 i
let j 0  c) h  ~+ S& P" ~" `
while[j < people]
& ?- b! c" X; V[
! D/ p( v* C$ Z4 F2 K' V, G" ylet new 0
& J$ y0 c( O" Y3 \" {;;
暂存新的一个全局声誉6 n9 A$ s7 l8 [9 N% d6 i4 E2 Y
let i 0
5 A! A' v# P8 F3 h- Y& l( Z% Clet sum-money 0
1 j) T$ ^$ y6 s8 P6 n( Nlet credibility-money 0
8 H3 ^) _9 T( o2 ?: E( J" N& x7 H3 pwhile [i < people]5 o) r/ E3 T2 B  r
[* E: ~9 d/ i' {7 B+ |1 t2 v: F
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
  x2 y( n% P  g9 m' f9 C7 W6 s% ^3 Yset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
6 m9 o  U" {3 H+ X* uset i (i + 1)
' D9 g! ?) K  {* T/ f, H]& ]/ f# _7 {: [. Z
let k 0
9 }, ?' i' l. c; C' x) ^% Klet new1 0
- b' P) v! ]0 E& G* Jwhile [k < people]
% v6 F2 \6 i1 w. D& L' E2 S3 U& o[
: x: i1 @0 l! X" 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)3 Y6 S; e! V6 \5 G5 r3 c
set k (k + 1); ^0 t8 k" z' F- L
]! ^# _3 b# W% X; v2 A" J. T
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
; d1 c" ]  P) ?+ i5 vset global-reputation-list (replace-item j global-reputation-list new)
  R# C( [3 z; P! x$ Hset j (j + 1)
5 t( K, _" f% Q; Z/ `& u]# v! P. `$ x5 d3 z& j7 \
end
. _2 V* ?/ `. p2 m
- T3 g" Y; i& V* Z3 y" e+ Y+ k0 |: f8 ?# I- X, v

5 d4 B$ U9 v7 e5 `( x8 w+ J/ W" uto get-color
. s5 k4 h  S$ W7 ]( s  \2 e( T, q6 V# L% p: p) ], ?2 X5 P! q
set color blue

9 z* F) Z; X& `6 u6 \+ q; U2 m3 kend
2 F: `+ |+ ^: f! L% i6 V4 d$ }: P+ M. j3 k, n1 f/ e
to poll-class' R- B/ K0 Y3 e: }  S
end
: s1 Y; h! e. k0 [1 ]
% J! |  M) J+ Mto setup-plot1) U3 ]& m2 ]1 q4 H" v
4 y! d# t7 E5 ^# K! }
set-current-plot "Trends-of-Local-reputation"
) J8 M0 L3 X) f6 s5 h) _: _. b

6 H- ~" ]1 }) x# U; C: l$ C3 w7 Y( V  mset-plot-x-range 0 xmax

  j4 q$ j0 Q& n# ~& e; R6 v
( P( P) Z" {3 I/ Mset-plot-y-range 0.0 ymax

& h, u& L8 _3 {6 C. p/ Vend0 I, U1 x+ [8 h. V/ v
& e2 K% i$ x2 [+ A
to setup-plot2
. y& ^5 g3 f  e& p& }' J; f8 g  }! c( j& x; \7 `$ N
set-current-plot "Trends-of-global-reputation"
/ F% p. o8 c" W9 T; Q$ i2 m' M

6 Z) P( H* o* S4 [. fset-plot-x-range 0 xmax
% n- Q, E; T" C; W; r9 O5 P4 `
# v0 T: E8 e2 B- q- M+ W: N
set-plot-y-range 0.0 ymax

" L3 b; b# l9 g' R( b  Pend
. {) z4 e' h& I; y+ L: L0 l8 |3 }- J2 n& u, B7 c( ~
to setup-plot3
/ ?. r! K, a: K" m% r8 k1 k
/ v. N$ f3 `8 L2 }, iset-current-plot "Trends-of-credibility"
3 I, K$ {, T: `
% l  K! X4 K- W1 n
set-plot-x-range 0 xmax

6 o2 `) i/ X, A3 z9 |- C) m6 V% A* z/ z9 S
set-plot-y-range 0.0 ymax

  q4 O8 J/ q9 A5 ?. P. @( rend
1 _; c4 a* G/ f% E* i2 L# H! Z" r. `' k: f
to do-plots) o6 v: z0 k* j2 A3 u- D+ }
set-current-plot "Trends-of-Local-reputation"
) O% `8 f4 ~0 c+ n& oset-current-plot-pen "Honest service"
! \3 M: Y4 @3 z, F' cend
. J1 B' W( C2 a7 G1 Y' w+ R9 t  g5 \; h' H; ]
[ 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.% k" ~: s% s9 A$ i: r! R! k

( k1 c( l9 ~4 t) s2 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?
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