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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:1 f7 _$ t! D( j7 ?8 l4 Y5 _$ N% d
to do-business & |) }; u2 k9 S1 p' R! Z' `  \
rt random 3606 k& B4 W  e' _5 L9 s- v( j: `! o
fd 1
0 y7 }+ q' C9 Q9 b ifelse(other turtles-here != nobody)[; u4 @. m7 v  S
   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.3 h) o- e% F/ l" K) r
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    $ ^3 p3 l8 b; r$ E! c! J4 z& H
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer9 f' ?3 l5 A' `8 b5 R
   set [trade-record-one-len] of self length [trade-record-one] of self! n; M% N8 `5 q9 l
   set trade-record-current( list (timer) (random money-upper-limit))
  Q4 e- O, b+ k0 ]! C4 y. `
  O% T: v% t- G2 b, h! D' b  y问题的提示如下:
, F0 W8 d, K( T( ^4 A4 h2 l4 a9 A2 n  _1 y$ X$ n1 L% U
error while turtle 50 running OF in procedure DO-BUSINESS
% K' U7 R3 O  F( e9 W  g  called by procedure GO
1 p5 H) N+ h/ JOF expected input to be a turtle agentset or turtle but got NOBODY instead.
/ L) m/ B$ ?* ~: f
(halted running of go)# X3 a4 j1 S' m7 ~& [, e
; K9 V  Y  Y' _2 i
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~~; _  ^; R. l4 K9 ^$ f5 @6 j
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
$ O9 B0 b. q) y! I" @globals[
+ R' }% O5 d- C  d" c2 Txmax. e! J7 j, S8 S  K  V1 |
ymax7 ?8 I5 r! Q/ l3 S, z8 T' f
global-reputation-list
, M8 K" U7 S* A
2 K. N$ E8 V4 W+ D;;
每一个turtle的全局声誉都存在此LIST6 W$ ~& T" \, U, b
credibility-list
/ L5 x9 o# E+ @0 ]6 ?;;
每一个turtle的评价可信度9 B" m, U7 B9 B, H9 d
honest-service
- A% T3 ^& ^6 a4 B, Vunhonest-service1 E2 m  A+ D+ ^/ [
oscillation. o' k3 a; }8 w4 ~: B( c0 \- M. ]7 i
rand-dynamic* ^" d& r& s$ L
]
$ l" Q& Z9 u. Y* S0 g' M& U  I  s, B9 c
turtles-own[
, ^& A5 t0 E+ N* y; T7 rtrade-record-all
2 Z0 k0 G: r- y; D1 `! M! @- Q;;a list of lists,
trade-record-one组成! o2 h. U& c) ]* r/ k/ p
trade-record-one
2 y0 R  c( i5 a( d" {3 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
, U1 [  }! t: ^) o% m9 W9 ~7 X* f7 R: ]2 U6 L3 t
;;[
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]]/ {; \/ N4 _) a1 N* b8 g6 ~6 o
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]
; ]2 D# n2 k" V0 T& Z2 _& Jcredibility-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  H" f0 B; P# u/ B
neighbor-total6 ^" r3 A0 q' `. v2 |0 ?
;;
记录该turtle的邻居节点的数目
0 k* a! f/ p! S6 D9 B7 Htrade-time+ O* U; ?( y3 S; Q/ o  a* O
;;
当前发生交易的turtle的交易时间
! D- K* D! Q' R) Eappraise-give
; |* C* ~! W4 A% b' s2 b;;
当前发生交易时给出的评价& Z" f! X, Z9 _9 \& n- h/ W2 R, a; A
appraise-receive; @9 j$ O& i# o
;;
当前发生交易时收到的评价7 }+ B8 V: ]' V% f% O& l
appraise-time2 U& q- J  G* w6 m& k
;;
当前发生交易时的评价时间
2 y( y3 `% E0 `) wlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
! K/ ?; P: V4 R2 s* l+ {trade-times-total7 @: W% s% W; ?; z* D. t
;;
与当前turtle的交易总次数
# v' S9 |/ U* A; L$ u5 j/ Itrade-money-total1 R$ t4 g- e2 i+ u5 O
;;
与当前turtle的交易总金额
& {& E" x; `5 m/ D# d$ J  Q& t9 a% Jlocal-reputation
; c9 z; _+ w4 Y0 Kglobal-reputation
' \- B6 ?! M' M- qcredibility
- ?; z: D  _; T4 |0 o: r5 b7 r;;
评价可信度,每次交易后都需要更新3 u0 C, ]: z8 ^7 E+ O2 k/ M- Z
credibility-all, w/ J! b$ G: @8 c
;;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* q; }" ^' [8 O3 i3 n5 C1 U: F
% A$ k5 t- t# O2 q6 |8 ]# q  K
;;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
; I" x% L: l: a% c$ {- wcredibility-one
% Y0 U( _9 s; X" r& s" U9 ?;;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
+ Y4 h/ N/ g. z9 E( }5 }global-proportion. _7 L! j; D% c8 R* g  G
customer
- k- `' C1 ^# O' Q8 W5 ncustomer-no
& g- R; p& l3 m( [/ vtrust-ok4 T3 g% W/ M6 Z$ e9 P- d& C" \
trade-record-one-len;;trade-record-one的长度
3 ]# |0 _& R, b7 ]' r3 I% x3 X8 P]
6 v" F( d" \3 w& U  J2 I" d! j/ m
;;setup procedure% e1 V$ [) I; d; \: i

0 u: P; N  @, A( b: eto setup
6 w$ o  A. B, M1 j7 t* [$ f! W5 P' p$ K- `! O9 j- w. D
ca

+ ?9 c6 B* w- ~7 o1 k4 Q
$ @+ P/ A2 i. }. h- ~initialize-settings
0 V! Q# N& L2 \- P( v
$ z. Y1 f7 t. f+ h3 |- |) _& Y
crt people [setup-turtles]
* l- ?7 a: G3 k; u$ I

0 s4 A5 X2 P" `9 \) ureset-timer

6 C/ ^9 }# c. g: O$ a
( Q5 L& N& [0 apoll-class
/ T0 ?% {9 A8 H7 L0 U% u

' r9 C: B+ m' o8 xsetup-plots

! T; {! H+ y' v1 Z' L* u* d
" C# E$ a- h3 ydo-plots

( @2 m% t' p/ Z. ^5 mend
+ d4 }% V( w  Q/ q" }1 j4 ^9 E+ ^6 D7 M
to initialize-settings
. p2 y7 m7 j& }& t2 {" ]$ K! z- U8 ], u# n
set global-reputation-list []
2 O( G" f, n7 N( k8 ~' k
. j: Y: y6 H- b
set credibility-list n-values people [0.5]
, q2 {  u1 J' `  e$ R8 i

% L! I; k) R, z" G. oset honest-service 0
/ {6 s( J) U/ ^
* j! v! s8 M( t4 U9 o2 q, ^' `- b
set unhonest-service 0

# ^% Q5 a; W2 U/ }+ V; A$ @
! O! Y( P! o! ^+ b+ _5 qset oscillation 0
% G$ C! ]7 |1 m' V( p$ M$ w+ I
! U$ k+ e% |4 A/ E
set rand-dynamic 0
( y4 m" \+ K$ ]+ r
end( z5 p0 I0 Y; q& F
  J! S7 a; i( T& N, [" j% n
to setup-turtles ! F  e; h8 i8 F( m0 Y; F. Q
set shape "person"! a; R% p) o. q  o! ?7 r
setxy random-xcor random-ycor  I" L/ ]* V: \
set trade-record-one []$ ?* h4 b* r2 J* F6 d

, E( j, H2 j4 \3 a5 dset trade-record-all n-values people [(list (? + 1) 0 0)] 9 O+ ^- M; |, u) ?0 B

" h& I! ^* S" A* J. M& Fset trade-record-current []& i5 U0 Y- E) }- u/ c$ j8 Z
set credibility-receive []* L+ e' q) K- h1 s. ]
set local-reputation 0.5
  _$ [- v2 F$ h, Jset neighbor-total 0
0 G4 B% p- V  Q) C/ L9 z" nset trade-times-total 0+ \2 Y. J3 B# \# N7 M
set trade-money-total 0/ h1 J- _& ~' I/ k$ e
set customer nobody
0 g& C) ~2 n; B3 D1 ~set credibility-all n-values people [creat-credibility]
- }3 q& B7 S" hset credibility n-values people [-1]; |# w! `2 Y/ J, C. [
get-color& g) T* q! g5 u& ?* g
  c2 W# \- @1 v7 h
end
4 W! N* e9 X* [& j* L
& {! I' c/ ]+ A& X8 Mto-report creat-credibility
: |! x  H, S4 B% O& dreport n-values people [0.5]4 {5 H4 d$ P9 e$ U+ o
end
9 U( p  t6 m$ E, K
  r* l+ l5 W! c* ito setup-plots, E+ v- I. Z, ^3 r& h

4 a! b, c" D& M# k: c. fset xmax 30
2 J# V+ a, @3 t5 o" V0 R
" O% j$ V) l9 }$ `
set ymax 1.0

, c) i$ W* o4 N  o8 c. k2 c
- C" ~% [  |. ^* S, c! L8 Vclear-all-plots
3 c; s" P# d; a: F7 D8 P3 G
7 N5 _- E- h$ N! U$ J
setup-plot1

! i8 c. B" H' {! c1 d( W) W9 S% N& e% V, L+ }% B9 H$ I; W" g
setup-plot2

3 @8 u, B- P/ f: Z9 x6 g& G& m# c/ ]1 ]0 _( n, v- L7 ~/ f
setup-plot3

: i& `" Y" a) P( xend0 X8 d: E$ y: K

& I8 R" T0 t/ U;;run time procedures; r* @* w8 P" H/ B: b6 p

; q8 y7 }  F/ D- j# f* A7 R+ Yto go
$ O9 c  f8 s* h0 M: F
; \0 Y" S6 z8 X* C1 s. I  E8 ^9 {ask turtles [do-business]
% Z/ a( M8 a" P$ [/ v" T+ \5 P
end/ V' Y5 M( p8 p# k  Y

& b9 n6 u1 Y! z, M% s. \to do-business 0 p7 H8 N) }3 L

+ u6 L% c  T1 l! g: x  e5 [6 J2 m7 R6 Y3 `
rt random 360

2 a: e6 |- o7 H6 Y$ r
0 e6 ]* p) X9 ]fd 1
' J' L; H  P1 N, {4 u% i  U$ }

5 @( S' Z2 Z$ S: B; _) ^ifelse(other turtles-here != nobody)[
! V3 e' V! _4 y  ?# z& K- g
' y: P2 K# G( M* N4 e
set customer one-of other turtles-here
7 ?6 t9 E$ j; W$ N

' i: g2 z: w9 o  Q, c7 K7 g: q9 K. V;; set [customer] of customer myself
8 }9 _: m$ ]' u  V) w7 Y
" V3 d" p0 C  v: z9 y! j2 k, w
set [trade-record-one] of self item (([who] of customer) - 1); m8 `# t5 _- V! _" C0 [
[trade-record-all]of self4 A/ F8 h1 h% g- P7 L4 d. H5 c$ t! {. i
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

6 Z5 t4 X; V: C7 |& V4 D, B. z
set [trade-record-one] of customer item (([who] of self) - 1)) n7 S4 P: q9 t" E  k
[trade-record-all]of customer
7 X) Y- j; [3 R+ C! F) l; l7 g
( b8 @1 c# B5 m) P+ s) m
set [trade-record-one-len] of self length [trade-record-one] of self

3 _* y) w1 U# l# i( Z; M3 M8 n, J/ k/ U* w) s/ j7 Y
set trade-record-current( list (timer) (random money-upper-limit))

* n8 G6 P/ G* j* h( W
0 L( g" e! I- t. D) Aask self [do-trust]& S, m: V+ \, q3 Y
;;
先求ij的信任度( y" T8 N) J/ t5 Q! l, V

" i% S4 h: l7 L1 aif ([trust-ok] of self)
9 F5 Q+ Q  M8 J: _7 V;;
根据ij的信任度来决定是否与j进行交易[
) W3 b/ W  G, e1 D! U- gask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
1 S1 A/ r8 c# J( k/ F8 |
; V  ^% `' V. L+ M[
1 V# f1 ^2 O$ Z& ^  P2 b
. y! H+ u9 l) z$ g1 S, u
do-trade
, X6 f1 z; D7 p# U
; ~2 b/ \5 W/ U! O/ T2 C$ H  z
update-credibility-ijl

& f8 e2 [( D3 K7 U, r) ]% Z" n- H
, n: P# ~" S* h7 f; k, V* _update-credibility-list
* W; o! _: \5 n% J
9 b* e# n/ ?8 m) o. G4 U

. w1 _# `7 C3 P7 Cupdate-global-reputation-list

4 m& P3 m& O) ^; m! L' f5 V' c7 Q$ `$ h2 L( H. |
poll-class

7 |; R% B# E7 V: s' c) D9 s$ n9 `2 k1 e* W- J6 Q2 K( j0 n
get-color

/ {/ _# t! m  F% y% }! {0 e8 P) z/ y! d7 y! J0 l9 C1 ~7 _
]]! \) T* R/ I* O# G" L9 l
5 j% B, M7 K4 C
;;
如果所得的信任度满足条件,则进行交易6 I' O+ d# U& g" ~/ G+ @
* q# o) q7 J/ w! q) |& M
[

* i% p; b( P: P1 r$ \3 R8 K' ~1 v2 }" a& g
rt random 360
4 M4 g0 j( t4 e0 _) _* g! Z, f& _

+ F# H  h, I( s: P' a% j. v! |, U6 i3 ofd 1

+ _; x$ n" }) y7 C9 v1 D' ~1 p2 Y+ b7 R- E( X6 M6 L0 Q
]

, T+ A; Z, y6 {& M# O/ u# I9 @, b2 S) p5 K6 k  j! P
end

1 Z! @/ D) Z) R7 l- K% I- |7 Q. ~& }* m* [3 f8 P7 ?
to do-trust
! i9 o$ s2 p& Q7 C8 M% ]set trust-ok False
8 g$ L& k6 n& P4 y5 Y& g0 x* J# f9 y" w" A( a  I/ `! ?; p
7 }9 }3 k& k) a! W% p
let max-trade-times 0
" v. D7 Z8 \3 y8 zforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
) `5 e( L0 ~( \9 b& H4 f) @0 ulet max-trade-money 0' Q3 E; l, `" D8 V3 B7 [& x
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]2 r. x/ n8 j1 ]5 I" l# I* {& n
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))" F4 J) V7 t- K9 }; o4 x9 S% S  L

+ m0 c3 p" S2 ]) q+ d6 d" C

* e* K! d7 |9 ]  Nget-global-proportion
/ Z" f) x+ N5 b( ~+ t; T$ @# Elet trust-value
8 m+ B' I* ~! p8 a% }5 Elocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
+ L) _! s& C; d- Z, V
if(trust-value > trade-trust-value)3 a3 q9 {+ m9 _) _  i
[set trust-ok true]- i5 F4 p% D; W* \. r  N0 T
end
' i1 d0 \, Y4 |) H" D
* V1 H4 @% y- |' f3 k, K$ yto get-global-proportion/ j$ Q2 `' Y- k
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
) c* D; U+ |1 ^[set global-proportion 0]
6 }8 _7 t7 x! c, [" R8 G5 }* O% @[let i 0$ D) E6 `6 V: {& I# Z# v3 u% j
let sum-money 0
# t- ^* t( {4 a9 Fwhile[ i < people]5 V/ `! C& f1 E0 v9 v" [: L% F5 J
[
, I3 ^9 [( G+ `! {  ?" zif( length (item i/ [2 o) i2 y0 L2 F% m& E2 {
[trade-record-all] of customer) > 3 )

3 B/ q$ p2 F' R+ q' X3 a& e+ _[/ x' c0 t( r% o- ?
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))" f0 e! F) f$ `+ Z+ e! Y' r( S
]: ^7 ^8 F3 b7 Z* E, y1 N" C% U
]
# u4 l( f1 E& R# S4 ylet j 0
" A/ w1 h4 H; C+ p/ q% N+ {let note 03 r  h, x) v3 ?# o. t
while[ j < people]6 r/ Z7 @: G; V
[
0 y& [1 u3 f0 u1 V3 `# M; sif( length (item i4 k+ V0 X% k: K6 t
[trade-record-all] of customer) > 3 )
8 V! ~% u" ^' Y) p5 @/ e
[( ^2 a+ ]7 i; X8 W, f3 T5 l, i# x
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
  u, G$ J- d, l$ z[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
" u0 A9 M) v2 V$ [1 h[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
- h0 Y$ s" s: H3 b" s/ r]  _  D( z+ d1 k8 g3 l
]- _6 n  y. X& d
set global-proportion note
7 x- E/ @& o  B3 k2 Z4 F]
3 F8 Q# i) z; J! Q/ Tend6 s3 I' B4 }' @5 E

  D8 }$ p: l- F% Y; f# {* Nto do-trade
; J* b* M3 [1 y5 Y/ @- N3 k;;
这个过程实际上是给双方作出评价的过程
" o8 o' ]. w0 X* f+ X: w5 Tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
: B  X2 f, I6 W% Tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价' Z5 [0 _2 _. B8 L) u) p. a
set trade-record-current lput(timer) trade-record-current
: G  E4 M/ l5 p+ w5 z  ~;;
评价时间& [+ g8 `7 ]. H& X
ask myself [
8 y0 F: Z' g2 \: S- s9 q7 S1 z& t  ^( x4 uupdate-local-reputation
2 e- @2 ~( A1 X( N6 ~set trade-record-current lput([local-reputation] of myself) trade-record-current
4 p/ \; g# i; ~- N& ~( ^# E]" I4 B; z3 w( @; Z% _; I1 n
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
; Y/ K4 e. l8 S! d;;
将此次交易的记录加入到trade-record-one" b( L8 K# a( N1 ~5 _4 K% O
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)0 V( x5 Z6 ~& i
let note (item 2 trade-record-current ). M) [9 m* a5 [6 H) U
set trade-record-current
8 h) L! j/ ^( X/ r% ?(replace-item 2 trade-record-current (item 3 trade-record-current))

! d# |( H+ ~2 {set trade-record-current
% G: X5 ~( D) u/ x: o/ s5 l(replace-item 3 trade-record-current note)6 O0 f$ G/ V0 `$ }3 t; X
( }% h' r& i6 g! u

; T1 X# e) A  u" u: lask customer [* @7 q! r' s4 p6 Z8 b1 }  ^: {
update-local-reputation
/ i3 f$ w( w0 d/ V- J* gset trade-record-current+ u0 f& h+ `1 x6 G& t3 i- h
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
7 p5 \, t: M/ b5 x
]
& Y1 v$ J6 v- r$ M
$ G- X* o8 Z; d+ n7 T
+ s& ]$ J% j% ^# B
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
' [4 U& s. d1 P" `6 [& C- d

% p; g1 n8 O2 s8 _: ]) w( i4 j% xset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
4 ?' \& G! R2 s5 i. d;;
将此次交易的记录加入到customertrade-record-all" n5 G, F! H9 i! A
end
7 e" o. j" c% y6 R# {- h$ x7 x+ G; G* d* _" n# Q, w. z* y; u- ]* W( w" D
to update-local-reputation! @% Q. i1 s2 W4 H3 L
set [trade-record-one-len] of myself length [trade-record-one] of myself
4 y: h) \& g: b/ ?; h: O  p$ n) y4 G3 g$ Q& D' g

. J# g; S3 q! |;;if [trade-record-one-len] of myself > 3
* M% Q0 j8 w# d9 F
update-neighbor-total
0 B2 M" l5 x  H2 z! m: Z! S;;
更新邻居节点的数目,在此进行4 R- t. F4 e$ }1 E" d, W
let i 3
9 M8 Z2 x. S  f5 r  v4 E4 Nlet sum-time 0/ f/ I: d, q; w) `7 P- g
while[i < [trade-record-one-len] of myself]
6 m$ z$ j' a1 S7 c1 x[
1 i  Q. p6 u' w2 l+ E; C  mset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
; \6 h7 x+ N# j; fset i
( i. A- B6 L. Y# f" x  h( i + 1)

3 c9 y) @3 [% q; d) Y+ `]8 f8 d5 I: W. M% X% }7 w5 p  D
let j 3
4 q" j7 q- V) d: V5 jlet sum-money 0! |$ N* ^! v: A! w6 m& M7 V
while[j < [trade-record-one-len] of myself]4 R+ ^9 ]. h! p  y; G2 [' l- ?
[
% }+ K0 C; R: W7 ~8 tset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)0 U3 p  h% k/ s9 P$ @
set j
. K& {1 S- X7 P" h; k' {# R' Q- x. d( j + 1)
, e/ V& M3 O, l. ?; b
]# X9 E0 S! F9 I8 H& r
let k 32 o& X) t! P, ]
let power 05 o/ n- ]5 \  l% Q3 T- k
let local 0
5 f* {7 s" Z6 w9 e3 Jwhile [k <[trade-record-one-len] of myself]9 \+ |2 N# F1 r0 p3 ^+ a
[
/ ~" V) ^  S, \% \* p& D6 R/ Oset 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)
; t% S1 R+ x/ {$ H) o6 @& t1 [* Bset k (k + 1)
# R9 w; [, ~* h- U4 _) t]
# M4 e9 h; J( O! ^* ^set [local-reputation] of myself (local)
' r/ C! s# k! w; Jend
) @0 _$ K0 \8 O* e; c! M, t+ F% q
# X0 c: F6 o' {  t7 K4 Y( oto update-neighbor-total! U4 N) Z/ T2 }6 t2 {

2 Y- @! V- _+ X; q! ^$ z6 kif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]0 M4 z* X( }9 W$ v0 b7 z
% O4 q# i2 o! u7 H
- r1 U' @' }9 k1 \" \4 c9 P" a6 p
end0 y: q' F! [) O
9 @, {% X- A& Y  Z  P* S0 y
to update-credibility-ijl
# l& T. i$ j# D. K  i) u. U4 V+ o6 a& M+ B: C  v' @2 @
;;
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。8 c# T5 R3 z$ r9 {- d
let l 05 X" \  w$ [9 Z, F4 H3 w% J; T) y
while[ l < people ]# r# ?4 y. R' [* ]1 r
;;
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
! k# n0 q9 Q- T/ {& _[1 R1 J7 }2 \8 c9 v; o
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
7 S' N5 |2 M4 R8 @+ K) R- Zif (trade-record-one-j-l-len > 3)
4 t7 _( ^- e: q. X3 p  Q[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' p4 k: V! x* q( p5 W! f
let i 3
( c) n- Q) h# B$ m0 dlet sum-time 0% k7 i. i: ~4 ^4 B1 ~
while[i < trade-record-one-len]
% D  D6 Q; f, R* R[
: P) r* r: a: g, d9 O0 Dset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )# a& i+ \5 f$ C& L+ C# }8 m: n
set i
9 m  e0 m7 \# i& ~1 `' g2 a( i + 1)
6 \1 g0 U% {) ]* a' a
]5 m% p; i* o, o( e
let credibility-i-j-l 0  K: B; {- i; u6 G3 `
;;i
评价(jjl的评价)
2 S( N; @& [- Qlet j 3& x' r& H4 ]: ?( F+ E& s7 U9 p
let k 4. N$ T$ I7 f6 ?) X0 F' a) b: a
while[j < trade-record-one-len]
+ d' D% j" V  E$ M6 J. B' M4 y8 {[  L9 n  A) R1 X! f& `9 d& H+ [/ \
while [((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7 _6 i& N  E: w2 n* }
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). T' t* q- ~  S. Z. t5 @2 {1 A
set j
! w5 w% T9 Y2 M; |2 Q, r( j + 1)
: K2 v! d4 M: r! F6 L+ P+ ?. k8 G
]
. {3 x( o# u, sset [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 g8 p6 h( j+ J+ ^8 |7 u: L7 J2 }8 Z  B, J+ g

; r4 n' c/ |- n% s4 n, j' Hlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
: t; x- X. O, V* h8 W" k" {;;
及时更新il的评价质量的评价4 }  Z# I# Z2 K1 m
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
0 e$ [5 e! ~7 jset l (l + 1)  C  Y6 k) G4 w0 u6 L
]
" L* _) u2 \% W3 Nend
1 K( t# a% a  @% E
. d8 u* T" B1 r6 D, `. [8 Yto update-credibility-list4 M0 C& V: D- i5 V6 k
let i 0: D4 |0 Z1 F, Z  v
while[i < people]
5 D: v1 `7 j* |7 Q1 v) Y$ Q- x[$ b: N/ z; u' ~
let j 0
7 `8 X; v4 G2 d) olet note 0
6 C4 w) K* b8 ^9 K6 Alet k 0
2 e  n$ l& k* X% z;;
计作出过评价的邻居节点的数目' i1 A' d/ D$ R% Q0 R
while[j < people]0 D' y1 f" ^, S% d4 {9 J3 w
[
. ~, x7 E8 @( ~& E! \# o4 h/ sif (item j( [credibility] of turtle (i + 1)) != -1)0 D# k( D. v3 z' ^, ]2 C% l4 _
;;
判断是否给本turtle的评价质量做出过评价的节点
$ M( W6 ?* z. a* D7 B9 ]+ E9 p[set note (note + item j ([credibility]of turtle (i + 1)))/ D  U% p( L7 _  Y- @
;;*(exp (-(people - 2)))/(people - 2))]
$ t( H7 {4 [4 H- }
set k (k + 1); ^9 Q8 C' _# q/ f( r" w
]4 w& w/ h  W' |' V: Z5 c4 d+ z% G
set j (j + 1)
+ Q; q' M; o* H& P( h7 V, ^4 n& f]
; J# D( v% P9 Y- I- o: ], j1 w1 vset note (note *(exp (- (1 / k)))/ k)
. ?3 n! D, I) _  _3 `2 eset credibility-list (replace-item i credibility-list note)$ B9 E" d- v9 w* o' \# O
set i (i + 1)
! H: f  w4 D4 p) i/ T% z6 T]
+ ?! j4 p% S9 u" A. Dend" [1 x1 e0 `% _5 Q1 j! x  O
6 q% [2 ]  e& o' B
to update-global-reputation-list/ G! M$ L1 `. q: P0 i* V9 g/ R' m
let j 0
0 W0 d3 B0 R$ L& f  M8 Lwhile[j < people]
  n; n, }/ t+ o1 ^[
; B( p7 d$ T' g2 r# @  Alet new 0
: J* p( c1 O7 a( {3 E;;
暂存新的一个全局声誉
* X  P. k" r1 }# [' y/ klet i 0
& i; B" E+ C7 d9 @' O* zlet sum-money 0
& [. K) a5 r9 T* d+ Zlet credibility-money 0
" W7 k1 {6 j8 p% ]0 A" uwhile [i < people]
' Q. z. s, {% o: x+ @[
$ U8 s( X4 _: l6 ~) u% O2 Xset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
! E0 b" N, Y3 t+ L; b1 G8 g# J0 Kset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
( O8 x6 `, T% m3 H, d' I2 j9 A/ z9 |set i (i + 1)
7 z/ F" O, D7 x1 D4 A: c]# Y0 G' y8 C6 X9 x. K7 [
let k 0
+ t# P4 D* q9 j! e9 R0 S% ?let new1 0
# \1 j5 g+ t# D- z5 i+ x  b9 Xwhile [k < people]
- S. ?8 P! s9 V3 Y/ A1 {[
6 Y3 Q. R* J% Gset 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)# P7 X! \" w' p, j/ O. v! X7 o
set k (k + 1)
5 E! f% v& `$ i]
6 {" `4 g' i: Y8 _; oset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 6 Y2 ?+ \$ e6 `, X6 L
set global-reputation-list (replace-item j global-reputation-list new)
5 |/ v/ }) [" yset j (j + 1)& I9 h- G. p+ e4 U( }
]
5 p3 ]$ r/ f$ V* P' N* g+ I7 {end1 L) Z8 C9 I2 f4 A3 |
) m  W# ^$ Z% R8 M' R
3 s, p* i$ X; J6 ]
$ a$ Z& Q1 K/ t$ E5 R" V
to get-color
+ I9 Y& a8 n. ]+ X2 B" ^
. y1 \7 o- V8 V% ?. i$ D% ~2 c9 X( |set color blue
& V, v( b1 N: v% K7 n- z# V
end
% _2 s+ b# E0 f
# N" |3 \  S3 J& W) cto poll-class
/ u. h1 f* F) p  aend
+ r' b2 y$ c7 b$ s
; [3 Z3 v( P! pto setup-plot1
3 [  ?9 \8 j4 x- e& o/ u1 |$ h* F9 Z# I; S3 L( b* r, K
set-current-plot "Trends-of-Local-reputation"
% B: l4 V: C& l* k* ~* O# a

5 w  U$ P6 W! rset-plot-x-range 0 xmax

8 @4 _" P; I6 Y6 w* T
8 q* H  t$ v" a6 |' l6 {9 nset-plot-y-range 0.0 ymax
0 `0 T: _, a9 e/ i8 B
end. H5 Q3 v- I9 f3 m& f9 h" ~' k0 j
) S) U( w# v3 X9 X& Q, B# t' C5 T
to setup-plot2
* h$ T4 `0 Q9 B" B) L3 ^) k/ q6 F. q0 U' D& T# q
set-current-plot "Trends-of-global-reputation"

; C" Y! F3 j) E
# `/ v8 K" p1 \4 l* @( M" p3 Hset-plot-x-range 0 xmax

' W, `  @2 u: ^7 H1 @- q6 H0 j! W) S7 x! K2 N. Q+ E
set-plot-y-range 0.0 ymax
) a: Z2 X: o5 \. e2 m/ L
end
! L8 H' l' j1 }; S* D" Q6 \% y1 N* ?( R
to setup-plot3
$ V& l0 }9 H4 f  O6 V1 E
1 _7 {3 w- O0 M* f, P8 `set-current-plot "Trends-of-credibility"

% y) L8 X' r* M  Y4 K$ O& S) O2 h1 O" y2 e8 p  Z9 A
set-plot-x-range 0 xmax
" P$ A/ Y) @2 v  w& L

$ A# M1 G' m4 `( H5 Zset-plot-y-range 0.0 ymax
1 {+ Y" |2 `2 r$ x; B, m& k
end
! V: {, E1 \7 u- q* y: M& m/ `# {' s, j  h2 s9 p$ n
to do-plots
+ {& U, R" |; Q" v) x; Iset-current-plot "Trends-of-Local-reputation": t- G6 v* N9 ?7 v( j
set-current-plot-pen "Honest service"
* n0 Q* y' }0 [: oend
) y8 F7 s& ?1 x, m' F" {
& N6 R% o+ D4 @' \& i* s$ b[ 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., ~: C8 }0 E& S* `1 x1 _# J

& ~, v6 C+ W( Q5 h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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