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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 d5 r( a2 M/ o+ q% m
to do-business % f2 a: i& p! K, ]2 f& |
rt random 360* V' b1 m6 O5 i0 V  l, G) q
fd 1
9 [. l# }9 u$ k% R1 \ ifelse(other turtles-here != nobody)[* K( P. M; r$ G+ I7 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.
+ @6 ~4 z3 @0 K+ }4 a& ^+ w   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
% ~" ^  J1 Q& w3 O! G1 F- R% x5 x   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
% T: Z0 K5 [" ~4 J8 \   set [trade-record-one-len] of self length [trade-record-one] of self
& g( Y4 s4 U* N8 f   set trade-record-current( list (timer) (random money-upper-limit))3 Z% n! a4 [# V" N8 c

- G( F5 F2 a  ]! l5 z- V- S问题的提示如下:
8 h! m& S4 N" ~' c" e2 y+ s2 g/ V; M. `/ S2 a
error while turtle 50 running OF in procedure DO-BUSINESS
# h. D( N) a6 ]1 W  |' y9 Z, [2 P  called by procedure GO
4 E5 Q  w# P1 F: W0 `! ]OF expected input to be a turtle agentset or turtle but got NOBODY instead.3 _. I& u( \5 n. F7 D
(halted running of go)
8 B9 ^+ d# ~3 b& D7 I" t1 c% T
! i3 ~4 O% B* c% N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 W9 x8 n: b# j# ]2 }8 |
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+ t' a! Z1 w: O  e
globals[
1 K# Q6 Z. Q& f+ Rxmax
* u1 O" |0 [6 ?2 B" Qymax
' F; j% s) v$ }global-reputation-list
1 k& d3 z7 w' @' A7 @/ F. K" M4 ~4 E! d  ]
;;
每一个turtle的全局声誉都存在此LIST, {& @% \; o  x
credibility-list
6 h$ E7 O( v5 P0 ]6 V% R;;
每一个turtle的评价可信度' [' C" G% Q( s/ E0 _/ F9 O1 t! |
honest-service' Q$ M: I' E- D  O( x0 E) B) ?
unhonest-service: m. D7 @* f4 T0 O5 M9 ?
oscillation3 j$ s9 T$ Z. @" \. ?
rand-dynamic3 n, G6 q3 U. L3 d
]
  D5 N% ?& D6 y
+ _/ {9 x2 Y; u7 lturtles-own[2 t2 i7 t* Q2 w
trade-record-all( x5 J! q6 S; C; _
;;a list of lists,
trade-record-one组成
0 v7 `. c5 D% Atrade-record-one) n7 {5 E  b+ m& v3 C" t" K
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录, M. V( v' _& }- y8 G- ?
6 b+ [- L* h: ?* e2 \
;;[
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]]0 a" h+ w- Y* S  u7 l! |5 l6 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]
! g. f# J7 _* 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
. e# T* ~" w' n% V4 v3 Nneighbor-total
0 ?2 n" O/ L6 a  T) f* I;;
记录该turtle的邻居节点的数目
6 s1 m; m& w- p; c% Strade-time
2 J. K) q5 I, l;;
当前发生交易的turtle的交易时间  E# L; y; l2 I& H
appraise-give
3 R4 X, ~0 s& {;;
当前发生交易时给出的评价/ H  }) n/ l0 @8 A6 \, x
appraise-receive
$ [( z2 r- D2 K5 Q0 R;;
当前发生交易时收到的评价8 I- B8 I5 k; \% t
appraise-time8 K' ~! v' w/ I$ Q& h( e1 l
;;
当前发生交易时的评价时间7 r7 D/ K! {* s
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
1 b4 e7 G% y+ Itrade-times-total* v3 i, N$ ]  E: @
;;
与当前turtle的交易总次数7 X$ N4 N7 `% y& U5 j& L
trade-money-total
7 D( @. J) v- L% ]1 q6 j$ }  g+ y;;
与当前turtle的交易总金额3 U( v( _" I$ Y- a/ R
local-reputation! i5 s- y1 B. l7 ~
global-reputation
; L2 z, K/ r+ e' [$ gcredibility
  v- d6 X1 c7 H' {3 e+ E;;
评价可信度,每次交易后都需要更新
8 O+ i3 U; I- l8 O  R8 o/ W; \% u  Hcredibility-all6 ]4 N- g, _# Z
;;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
, u+ o! B6 F' \7 r! s  |# ]! S( t/ F: V, A9 Q
;;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
" N% L  h# }5 ?0 e+ d) acredibility-one  M7 T1 J; v  a9 G3 H
;;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
5 z5 a; [8 l* Nglobal-proportion3 `: L1 w) T; t! Q  v$ H
customer# @) k" \) q# Z3 f
customer-no4 @6 e  o  G& x/ P* c+ g  V9 S( w1 S
trust-ok
4 `; N: _- H. p* Ptrade-record-one-len;;trade-record-one的长度* c2 B0 c8 P' S! }8 q& `
]
0 b6 |6 a0 B! d% w. W" t% A# ]8 A- e
;;setup procedure5 b- b, [9 F8 v# G8 H! b3 k
2 t. Z% |, Q- T. A. i: S. @
to setup0 }( v1 \+ L- D4 ?9 `# d4 I

0 d: y. A4 j/ X7 y4 g. |* Sca

4 V  I- x5 E2 G1 M7 n
4 i3 m9 Q% E' M, ?" vinitialize-settings

7 E2 d# ^' z3 i1 Z6 v1 }# q; [# D5 F. }9 y' L
crt people [setup-turtles]

1 h1 d& y8 ^! [6 g' u7 L. D+ d( A1 f" w4 `: \
reset-timer
3 R8 k8 n% Q" n% M) a  y

  g: R6 R  t/ |$ Z2 Z$ S7 u0 Lpoll-class
% ]' t& ?1 |% G) `  i
& R9 E$ K% I8 R( i& `4 ]
setup-plots

/ M* ]2 l6 v* R1 P2 u" L+ i) y8 ?
4 V& B1 i0 K+ tdo-plots

* t1 `: I! |$ ?& D5 Yend$ B$ w4 O5 o# w* F

2 B: @7 h. V- j! A: Eto initialize-settings+ L3 @6 ^+ F5 B# Q4 a# d) I, P( z

0 F7 V. s" N8 x: a- l+ B& r( Yset global-reputation-list []
" M% p. U, r2 C0 L3 B& [: r

8 C: f, C& R& F+ `1 c. `* Lset credibility-list n-values people [0.5]

, k! n  a$ ~8 K. o8 I9 l1 Q7 D! D* d: w: W  V
set honest-service 0

& i. [% M6 |$ L6 |. G0 _( t
2 t, H- N; l1 v. mset unhonest-service 0

6 q) \; {9 S/ c; |8 X, h5 B7 f0 s+ K' Z# g! f3 D" O5 Z% d& ?9 i+ V
set oscillation 0
- [: J3 `' ]/ x+ A' q# N

' v% L4 J, _/ t9 Qset rand-dynamic 0

: X! L$ t2 w1 N1 D3 q8 Q4 j0 jend6 u& \& f' L: d) \
4 a6 y1 l( g# `' w$ X2 a  p1 o
to setup-turtles
) H5 o5 t1 r( _; o' B3 Tset shape "person"+ c5 ?* w- ~7 K) z( ^; M! D3 t
setxy random-xcor random-ycor8 O" G$ l7 V/ d. t
set trade-record-one []
0 M9 g/ I% f# H1 ~1 t. T

* D5 N) ^! u+ X; V, n+ gset trade-record-all n-values people [(list (? + 1) 0 0)] / Y1 i7 Q) Y9 V1 |( e) I% b
# r  j9 U  U6 w, p- y0 n
set trade-record-current []
, U. k4 S. _) t; f7 o% |/ kset credibility-receive []/ A1 o8 k+ \: [, W0 g  h
set local-reputation 0.5
5 C. ^) ]. o1 b3 k6 H% ]! I% Bset neighbor-total 0
2 J( O: S6 r: Lset trade-times-total 0
6 _% c2 ]( o7 j* o* j4 E8 wset trade-money-total 06 P2 f/ G7 N! s- o7 @6 {
set customer nobody
, R+ V: w7 ?& Q( tset credibility-all n-values people [creat-credibility]
) R- c& V$ x  ?  @set credibility n-values people [-1]
4 M6 N8 g. ?7 B4 x( u6 Yget-color
4 B: k% l9 q' z- M! A% x( _+ t

) r5 ]; F1 ^3 ]3 q6 d: X* eend9 O5 g& L, I& t& W
0 k0 z9 u! u, ]3 T
to-report creat-credibility. |$ S! B7 l, {
report n-values people [0.5]
# q% ]- W* Z+ H* ]- send
- I$ B. C6 _: z' F/ A2 w( {. }9 P3 A
to setup-plots
" T" n+ h# A& c  Z8 m: |+ @
# y3 u: z( v; Sset xmax 30
9 ^! D( M! `# h7 @6 ^' f
  @7 x3 H( h. @$ A; _9 _' ~
set ymax 1.0

5 Y* [! k. m3 e1 R
, p) q: k6 @  z# y% Jclear-all-plots
/ T+ t% g" B0 H

0 R1 c, E, H0 m+ Y# S3 y" Asetup-plot1
/ _! m6 L; m( ]4 k5 d5 m

2 P1 h! Y- d# r* O- M4 ysetup-plot2

: Q& F" E( ?2 H
; H2 T6 ?  J4 B0 H6 A! isetup-plot3

% S2 C* c  s6 A% P3 rend
1 `+ a) a* F% E9 C, B! a
0 x& ^4 R7 j$ o* w& ?;;run time procedures+ ?1 w5 |& K) D1 o3 j6 y

1 A) Q3 u, t9 Tto go1 l' L  ~0 Q6 _% R7 w) i
( z: i- N; l1 u; F) I1 }
ask turtles [do-business]
  D% \$ @& c8 e
end1 J* p0 ~& a; h5 g$ p
% |; B9 }$ n! T  E; ?
to do-business 0 X) V$ ~3 D3 D7 H# z' r1 h
: O. w- q" ]9 w
; f8 o8 a/ [2 p5 Y! {
rt random 360
. I5 ]$ u/ Z" ?3 }' H1 w, _& y+ ^
8 \, p  d7 d% `! b
fd 1

; i+ t, |6 F4 p/ q$ q1 ~0 _$ c& F* I8 s! _9 [% I
ifelse(other turtles-here != nobody)[

% e. M' c8 ^5 X: t( F* b1 W2 p* p% v) c  p! k1 k
set customer one-of other turtles-here
4 _/ w7 Q" _+ u' C/ o/ \0 t

- _+ y: S/ M# F7 C" u;; set [customer] of customer myself

$ ]7 s% b! M8 L" f8 W! x+ b& U  e# I& a2 ^7 L/ n6 _
set [trade-record-one] of self item (([who] of customer) - 1)
" c  w4 ?- N$ t# }3 n% x[trade-record-all]of self
2 ]/ L3 P: ^8 a3 O1 Z" g" Z;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

& O9 ?$ Q2 g3 d  W8 v9 S# }; L6 `, p! ~+ E+ ^9 h, O4 H( X
set [trade-record-one] of customer item (([who] of self) - 1)3 K- _& m/ o  Z1 A' l% T- z
[trade-record-all]of customer
" c$ U2 @. q9 {+ ]6 t5 b7 Q

+ a: P8 q, n0 z( l2 Gset [trade-record-one-len] of self length [trade-record-one] of self

9 X3 H( s. u3 Z& S, U  d
( `0 c' D1 t% x- uset trade-record-current( list (timer) (random money-upper-limit))
/ m7 F  ?  O. s; A- F' L
: C2 v3 _" `3 o( E) b1 z% v" S
ask self [do-trust]. z$ ]! p% m/ D# K3 m" E
;;
先求ij的信任度
( \- o0 S) R) E/ L! M& A- Z  ~/ T$ ~
: L# r+ w9 C! p9 s0 Y2 wif ([trust-ok] of self)
) l8 Q) R/ B2 X1 a1 a" i0 \9 p3 _;;
根据ij的信任度来决定是否与j进行交易[1 L% ^3 V4 o0 S* k0 I0 `9 r
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself6 H( i4 q; A  E( D0 [' c+ C

! X, H) E: U, u( F2 ?# ]8 D6 W[
1 ~/ Z4 t% F; k& f( w% R
' s* a2 f2 d( _/ J1 R- {; x
do-trade

% o! @' |3 J$ i$ _! P5 {* [5 z7 I# Q) K8 C4 b
update-credibility-ijl
8 c) q, e3 u* V) @5 @9 N/ |
6 O2 m4 ?* b; X
update-credibility-list
1 A! i: Z$ l2 p9 b( m; t

3 i. W) F- \+ _, m1 s4 F8 v+ A. ]1 N; _  |; _
update-global-reputation-list
1 @9 T! _/ x; D% H0 m. S2 Q

+ y3 r  W9 ^8 g, Rpoll-class

0 g' [7 m) Q- x/ N' F) G$ S$ \6 S% e2 ^" ~- s
get-color
5 m' Q) x) J+ L
- K# t4 O* l; i$ ~. r
]]
* M1 ~% x3 q  j5 X: d" A% E0 a+ E, {- D9 @5 I. t
;;
如果所得的信任度满足条件,则进行交易
9 [5 y  N& m5 }* O: G1 D- I8 j$ [: ?
[
: |+ V/ v+ ^3 t4 @9 d4 k, p! O

+ B9 |& O1 w% f+ d/ rrt random 360

. Z  k0 N' b8 W) n3 u: Y+ Y( K  p( k% V) s' k& z
fd 1

, B3 v, J' v* M$ G) E
5 _# a( Y* A0 v; N0 l! y]
8 r0 v6 }* T- A; C

$ V+ u# F: n3 rend
: Z. R- a; |) _% S+ f, E- A) a! }

5 |: P. Q: I) N  tto do-trust
. O' o# S9 b' Pset trust-ok False9 G$ E1 _( G% a7 r0 ?7 S% M

4 R9 f* k  K! }" a( N5 Q" f" _: l

4 C$ g, I4 Z2 ?let max-trade-times 0
5 ^; z4 U/ n1 I* J/ w/ @foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]5 }1 K. N' J6 u% [2 Z9 T, W. O4 E
let max-trade-money 0  v& f. G4 |' P% `9 z0 J/ x4 j
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]9 H  y0 }4 x1 n/ a. U
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))  S( D$ ~& r. w% j

- j$ C2 i3 t' ?
; S7 R# l' r8 N1 q9 g
get-global-proportion
3 |" c, b, z1 ]let trust-value
: S+ X* N( }8 K/ {7 F6 Clocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
5 ~% h0 h" Q* C
if(trust-value > trade-trust-value)
# e4 |6 d- j. t* {9 m[set trust-ok true]
, I& b6 ]+ D& u* iend* P# {3 |& ?* D0 ?7 j

2 q$ C" n4 q  F! L# Y9 c0 _to get-global-proportion
4 u, w2 u' ~! s, |$ M$ C7 g# b3 `ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)* q5 q. R9 A& ~5 q- n' ~
[set global-proportion 0]
4 A$ w+ `) x7 v) t  Y[let i 05 I* e8 U) \8 P; v2 u4 V3 I3 X
let sum-money 0
! {" a3 \/ w! h7 [. swhile[ i < people]2 B1 C1 S7 [  P  D% U
[
4 U3 b" r) S9 Y% ^if( length (item i
- t. ?! g9 x8 k1 F# d[trade-record-all] of customer) > 3 )
0 F( i3 j8 i5 \
[$ E  j" a7 s. X1 Z7 s
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
2 B2 u, E* q( D]
' {& k8 Z4 k$ A4 M* ^]3 a5 I5 T, J* q: L* x
let j 07 s$ I& l' w, t3 e0 P4 j( s) D5 z# l
let note 0
  |2 v: j# y) P7 F. P' Fwhile[ j < people]
2 P! Z/ K$ d0 S" S9 M% S[
5 L0 H, ~: i& Rif( length (item i4 Z8 u3 x2 ^( L* M+ f; I% E0 z
[trade-record-all] of customer) > 3 )
3 M0 ~; t* z1 m& `; J6 {
[! u# C4 \. _$ r2 y% u
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
, E! w/ r/ i) O# Q  Y( v; ?$ S[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]. H) R  r' ]. u9 m$ B: B  A6 M
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
, O4 A( h; m8 ~% R]; q/ o- o; F7 [' Z
]9 t$ B- S9 X7 ?2 S3 K" r
set global-proportion note
' K' i6 ?. t) Y% _5 t]
, L$ H: f- y) x+ ]" k# Nend
  K8 q1 d6 n/ n2 j1 [
9 q( I$ r& n; Sto do-trade
* F5 X. j  |# w4 I( \& r;;
这个过程实际上是给双方作出评价的过程" B6 Q# `3 V1 E2 y. ]
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
/ b  Y* r; p; l9 yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
' V: x* u8 d3 iset trade-record-current lput(timer) trade-record-current  v$ T: R. C4 g) C6 o
;;
评价时间; f# ~: ^4 l; O
ask myself [# f& C% s4 d8 t7 T& ?
update-local-reputation4 k$ d$ K7 \. e" \
set trade-record-current lput([local-reputation] of myself) trade-record-current* Q- v) C6 L% I1 r8 f7 F9 C# U
]
3 F7 Q# }( `8 F% |- |4 e# j/ Yset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself5 H2 @. V" `' _7 j3 Z; E, C$ a
;;
将此次交易的记录加入到trade-record-one
0 y/ L3 n6 ^; @set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
* r: y; {. J% M& g$ M7 z9 ilet note (item 2 trade-record-current )
# x8 e1 N) w3 Cset trade-record-current$ _- h- N3 C/ P1 a
(replace-item 2 trade-record-current (item 3 trade-record-current))

5 [2 b) L4 m( {) ?/ T, {" J0 \set trade-record-current
) l( V; m& N7 F" `% b: U# e: t) D$ f) Z(replace-item 3 trade-record-current note)
8 r" |4 T% [4 T0 `$ p& ~+ R* X4 R' b- G: z3 X
! [$ {0 B1 X1 b
ask customer [
$ p& c$ U; K5 Nupdate-local-reputation  s) J/ S+ \2 O" s; x& i
set trade-record-current
. Y+ V& t2 t& ^& b$ J) b(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

: T5 S9 d# X: U$ M& r! i  p]- v/ A2 r' N8 s) W/ S$ w- `6 E
0 Z. ~4 K/ P4 d- Q3 F. b
5 C! U7 }- |/ T  `4 E3 Y- g
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer0 ^, m9 r/ s* M' V3 q
' W* v9 |6 c: L! ~
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
" S: U* v0 o3 \;;
将此次交易的记录加入到customertrade-record-all, L" d4 c" n8 X" j
end7 d  q$ H5 A$ F6 U' A
  s! q5 h3 d: R- Q8 ^
to update-local-reputation& @! U' v8 l: x3 u3 T2 K& W  n
set [trade-record-one-len] of myself length [trade-record-one] of myself
9 X2 @2 T! W: [+ b5 T* ^3 g0 L' w1 b! u! E

* c$ o9 ^. O8 Q" `5 D& s0 ^% A2 y1 {;;if [trade-record-one-len] of myself > 3

/ V4 V2 D* Y- k1 {9 ^& Rupdate-neighbor-total
, D8 _1 e# {: R$ {2 e;;
更新邻居节点的数目,在此进行
/ I' j3 D5 x& j8 ]% q. c7 f* flet i 3/ ~/ z$ e+ \3 Q9 u( Z3 @
let sum-time 0' k: h, ~& A8 B1 L% l
while[i < [trade-record-one-len] of myself]2 n5 L" L( C# e6 q; o9 _* x' O
[
, J" V& v6 P2 u% r5 ?$ tset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
2 i/ H; M5 l. z" r5 }0 O2 Y1 xset i6 h1 u! X! {. ^
( i + 1)
6 I( h, `# B' e5 d4 z& K) y
]
, |0 R& n9 p+ F* H' Y5 N( S& s4 Tlet j 3
+ g1 G) Z) j. a3 l- dlet sum-money 0# M8 C: k9 A/ K* T, }; J( q9 B# ]
while[j < [trade-record-one-len] of myself]+ q% E. I& p2 R$ e3 D
[
% E" m4 d3 g6 K1 c" Bset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time); r! Y9 s) r# R. v. e
set j+ I. ~1 y: U1 K  c% Y8 V3 T9 L. p
( j + 1)

$ o2 v+ B7 V" m+ R# P]
' s7 q/ V7 r( M$ ?+ d7 wlet k 3
; z# k1 z9 R+ E$ n% tlet power 0$ v' [# `, K9 ~* Z, a# S7 r
let local 0
; f8 S. N0 q9 S/ H* b; X# ^while [k <[trade-record-one-len] of myself]
4 f2 Z0 \5 }1 y[- \2 o; \6 A( ~) Y' ?! h
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) 6 Z; P! E# R. z
set k (k + 1)
1 a" g7 D' M2 l]
2 Q8 e' p4 H  n5 b# Yset [local-reputation] of myself (local)
1 K' N" s4 M- _8 i9 Y4 send
( }7 j- g: n. T
1 p% G8 }; {8 ~" i( q9 L: ito update-neighbor-total
! M% j+ u/ b" i$ f3 V$ K7 R/ Q+ Z0 Y  m6 s/ a; V
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
9 f* i- i6 J0 Z/ [) B
* ^. t5 Z3 h# q; @

% a  k6 g9 V! L9 J- m; gend; K- t* {' K# ~* p$ `6 v% o
  a2 v) X+ v7 n# L
to update-credibility-ijl
3 i4 q( @9 J7 }8 w2 r- g
8 y- O+ Z0 U( z1 n2 n6 [. o) 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。
( u+ J) _2 W. }# xlet l 0+ c+ D1 ^+ H& i) d
while[ l < people ]
# _5 M9 D  L$ `8 c' ~5 P9 O1 a( V;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价5 o8 z8 S; j( U, F& {/ H
[
+ O* l5 t/ I# Q- u/ B6 i% Xlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
6 \2 I# e! w8 \; p) ]4 Q2 x4 S8 jif (trade-record-one-j-l-len > 3)9 w! y0 c9 c2 A# a- A
[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/ _0 N5 H' Z* m' l
let i 39 D% W9 }- @- J9 i( Z
let sum-time 0
; @9 L& u: }( X2 d- d7 F& s# gwhile[i < trade-record-one-len]
, c- c& j0 c2 I  s- r& n, x* ~/ |[
8 l4 V0 O! M' W+ xset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
+ ]) }8 U6 E7 wset i
- c% {5 T3 J+ Z% d/ b! D1 y$ b( i + 1)
1 h0 g" v! Z9 W. T: q
]# O6 f1 H7 h; u/ H
let credibility-i-j-l 09 y, d" v: D' E% Q0 ~$ Q
;;i
评价(jjl的评价)+ V6 d# L0 f2 Y2 R* V
let j 3" B* l1 A- l0 _. c9 P
let k 48 J. w+ F, h0 j: n8 {& J8 B
while[j < trade-record-one-len]
9 {& s! I- O" \( \[
) t! w' P' p: z$ r' Vwhile [((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
/ J& p8 {. u* N; M: D  y0 R) \: vset 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)
" e6 B* E; z% Z3 V% @5 d/ k2 Z1 Yset j
1 b( \' B. v- {- Z3 u; G: q( j + 1)

# ~1 N  C) O+ L6 D# V0 G! {7 o]
  s- w8 n6 l/ R* xset [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 ))1 w! N) [5 [4 _8 ]/ o1 D3 U
' S1 V" u7 N8 T, X- o
7 g- z0 R. n+ |; n. ?
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
3 g* k9 f! L; H;;
及时更新il的评价质量的评价7 c1 C9 j5 r. B3 q/ J
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
+ U6 j) c2 f% }% k9 J2 A& lset l (l + 1)
: C9 ~# k* o  W]
/ |$ o' @- Q& O% [  Y9 bend
" R: ^: _# i2 k; R& e7 j9 p: v* U2 H& \
to update-credibility-list
/ l* M; {9 D& f/ O# E  P# Klet i 0" n/ A6 n* G0 ?" s2 d
while[i < people]' z1 g' s2 Y0 w9 E& O
[0 E" k2 R. Z8 {6 E$ v
let j 0) {# R& r6 S' f  Q( ^1 }5 y; |8 ^- C
let note 0
: j2 B4 L. r' I$ O% w4 Glet k 0  @! H/ u( R* k" Q
;;
计作出过评价的邻居节点的数目
* J) o2 U! E+ i1 J+ ~  t: O* Swhile[j < people]) Q  a7 H6 B% f) t2 E: T4 I2 j
[
4 E4 j/ Q) b! S$ s- eif (item j( [credibility] of turtle (i + 1)) != -1)
& ^  y1 K3 }# H4 O% c" z) O$ Z;;
判断是否给本turtle的评价质量做出过评价的节点3 Z4 i, T2 X0 I. R
[set note (note + item j ([credibility]of turtle (i + 1)))
2 T. p# w0 S4 W% d' L;;*(exp (-(people - 2)))/(people - 2))]

9 z; p, U; Q* f) @* p6 o7 C3 M- Hset k (k + 1)
8 ]6 w' j+ Z2 t! P]3 p" Y2 e( `! w
set j (j + 1)
; Q$ s& G* l: w. i8 _0 x$ ]]1 n7 l2 _0 u8 U! N( [
set note (note *(exp (- (1 / k)))/ k)
- |5 ^- p6 _" Sset credibility-list (replace-item i credibility-list note)
  G* G$ r  r% H, ~  g' Z' j) hset i (i + 1)
! `7 Q; v. p1 m0 y1 u# N+ Y  N]( G1 Z" t1 O0 V6 X
end
3 g6 E, [# E) E: k9 b% P( C- w+ Q- J
to update-global-reputation-list0 _" Z# B) e0 g6 R6 x, W
let j 0' K! D6 F; L+ S/ u9 S: m, M
while[j < people]
- [; k. b. @( a8 n" Z1 Y+ j& B9 U[
  s& T! `8 o: {: b) Jlet new 0
" j4 r/ p- y5 y;;
暂存新的一个全局声誉
# |1 P, |9 {7 o' R2 ^2 S7 t, qlet i 0; W, K. y% J# D& O' q- r
let sum-money 0$ Q9 |  u- N' k
let credibility-money 0
7 b. {8 q* k; W' l( o5 U8 C( I$ Q3 T4 jwhile [i < people]
+ W. T  S! x9 v% J. a! H6 d[
6 e2 K' C; Q3 B6 a" s. a# x5 Q4 m8 kset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))); h, l9 y# C5 x
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)). h' g8 U4 c* j. j$ n
set i (i + 1)1 K8 v, ]/ h* r* D6 {' x$ i# s+ y0 E" x
]
5 A0 m7 g3 }4 m8 Q( i: s* qlet k 09 E# d. I6 q  P4 A+ B& X9 t
let new1 0
2 |, z9 ~. D  x/ X3 l3 U( }( mwhile [k < people]
+ M4 @9 M" ]0 b8 q[
0 t, `( ^9 [' m* _3 Jset 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)
% C; S/ B8 ?/ j0 j( ^9 _set k (k + 1)
! {$ G& b8 M8 k8 P: q]) e9 x( s9 T4 ~, r/ r
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ) Q, O' R; u  M9 ^
set global-reputation-list (replace-item j global-reputation-list new)
0 I6 J) U0 E1 rset j (j + 1)4 I2 p5 b; F# b0 B0 V, s. W
]
6 f5 m' l% ~5 Kend
% _, C. |% s( w/ M4 a
) [+ Y$ h3 N. l3 y$ h& H: f  y1 d! w5 k5 U8 N# D. a5 T
9 l: s  r, N! [9 C' a
to get-color# p7 V6 j, @# W6 W
, g6 b6 q- d+ r! n- ~7 w
set color blue

7 o4 K$ U  ]5 x' K4 ^; uend) E$ ~) R* A! O. D  q9 \
+ R1 Q; ?1 ~3 P' F. s) c0 D$ l
to poll-class
# W* x9 ]& n* ]1 s. u6 I- Q, x8 Uend. b" t  p. {& J- s$ X4 {
0 s$ M0 ?( v$ Z2 i5 p
to setup-plot16 i7 e9 M; B( N* `' d9 k; ]3 u' _
0 V) b, J3 @, J+ B, J. Q
set-current-plot "Trends-of-Local-reputation"

6 A, z) Y- o; z/ K! k# G! C; x
4 L" M& ]0 J5 ^( {6 ?set-plot-x-range 0 xmax

/ \) J2 e- R+ A3 C  \
  y, T1 i" W* M; J$ x' j: n( tset-plot-y-range 0.0 ymax

0 s$ n' z+ n7 F& @! F9 X# Q% {end' X  b0 b( A' ^: N7 ^0 ~
, c9 X( E6 @' k
to setup-plot2
% i6 G+ Y5 y$ J4 k4 y- l1 L' J
2 g1 A& o" ^+ n2 D3 T- iset-current-plot "Trends-of-global-reputation"
& y' u" n  q9 P4 l! V+ i

8 h8 P# J! E( o# k  ~, Mset-plot-x-range 0 xmax
# B2 ^- o4 T; B2 L) G3 Z6 R2 L7 T( |
; A) m$ i  ^/ y8 q1 i
set-plot-y-range 0.0 ymax
/ P9 y0 `2 T: i2 I# L0 j% ?, t$ C1 u
end" p; S: c( ~# @, z
, F* _2 j8 @$ z' o7 R
to setup-plot3
# Q% Y8 B4 m) Q. R, k# a5 t8 j! w1 }: c2 X& a
set-current-plot "Trends-of-credibility"
7 U+ L% b4 Y# x5 g
) N! ]( O: m2 n. Z! f) g, Q
set-plot-x-range 0 xmax

4 Q, m1 i  T5 F" W4 F" X# P. o! i. C
set-plot-y-range 0.0 ymax

/ A! F+ U7 Z3 u# Q0 X+ hend
2 G$ I4 \6 J0 A* F/ A2 K  j! k( F4 d
to do-plots
% C0 i: ^: T# @" T; b- t4 H5 P! Bset-current-plot "Trends-of-Local-reputation"
4 ]- b1 b/ m& T- V/ C9 ]set-current-plot-pen "Honest service"
( R% W5 q4 W- k% T* G2 ~$ O9 Q4 Nend* `0 j$ }* X* e  o
/ t: F2 ^# l# h8 \4 y
[ 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.1 a; Z9 z6 e% R! O

6 m# W; s- A  \& n0 C' O3 k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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