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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:8 U9 f. O( G( G) i
to do-business
$ ]( p" ]8 P2 p rt random 3609 X# ~- U6 B: f: X0 _2 Y
fd 1$ L1 r% X( B" M# M0 W
ifelse(other turtles-here != nobody)[
0 S& A3 b! l$ S4 p" m/ j   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.
% g1 S& z6 b( Y4 g   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    , B" j/ Z% t9 ]/ f* c' q1 c6 E' n
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
. Y/ {* S7 H- y* u   set [trade-record-one-len] of self length [trade-record-one] of self, M; H3 T6 A; r' D' W/ @* d9 W
   set trade-record-current( list (timer) (random money-upper-limit))
; p8 l# J4 {) Q3 c: n9 `$ {" f9 U+ v' t) L# ~% a# [5 f5 f1 W
问题的提示如下:
2 y5 Z" o% b& E, f% q* n; m# ^3 F4 H& U5 {
error while turtle 50 running OF in procedure DO-BUSINESS
, q8 @0 X% f( K4 s5 g3 G5 a  called by procedure GO
4 f# X6 Y& a/ f  U. _% ZOF expected input to be a turtle agentset or turtle but got NOBODY instead.3 ]5 O1 G. J/ c) x: j$ |% A
(halted running of go)
) b3 n5 ^& @, Z! \1 s8 o# m
, t% \9 x" m2 U这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~$ F  t9 {# k3 i2 N0 ?
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1 F4 \& ?. l: g# k  F4 ?  C
globals[
. |1 g' l1 T2 Z$ gxmax
% H5 U& N) M5 N- Q- m) I' vymax
# \* [$ f* k/ qglobal-reputation-list
4 m4 i6 ]0 h7 i* a- Z' _8 S
' X4 v5 c/ h+ J. r& @% D; v2 R3 {" y;;
每一个turtle的全局声誉都存在此LIST2 [2 p" t+ s2 {# P- U4 p: O9 U
credibility-list
' X; U) B( Z4 ];;
每一个turtle的评价可信度
7 ]. D/ i( m- z  Xhonest-service
2 j% K- I- Y1 _unhonest-service& _- m6 f& A0 Q, B1 D# s3 M
oscillation1 R. j9 y( e& V' |
rand-dynamic+ }9 a# x( I5 v5 w
]( d8 H$ o, {5 M: C( [& [
2 d* Q5 d* |& R. O; ?/ M( {/ I
turtles-own[. {1 `1 V6 a6 r1 n  I$ n
trade-record-all8 y' M8 G; t6 H/ l
;;a list of lists,
trade-record-one组成
: P% r# e3 k8 |0 u  ]& D$ I( Htrade-record-one, @/ ~" c3 D+ G3 L7 E& o; 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$ b+ E2 J6 w, o: l4 m, k
% R# |' _9 c$ m, i
;;[
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]]
4 E8 l" E, H6 P$ N) {& Ltrade-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]
5 u9 B- V7 V8 Pcredibility-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$ w& a+ }& I9 y6 e, l$ D
neighbor-total
9 \  g8 x) T0 y: J. k: G3 p;;
记录该turtle的邻居节点的数目
7 X0 I+ m3 `# l* a$ ^3 f) otrade-time& ?+ P3 n0 }+ {, D/ C& k* f
;;
当前发生交易的turtle的交易时间
/ ~( f5 t* V& pappraise-give: u! e% q, w$ m& g
;;
当前发生交易时给出的评价
4 G3 {4 \4 [0 U$ P2 J  Iappraise-receive
- ~5 }5 K/ K) o9 F9 Q" [;;
当前发生交易时收到的评价
$ l, a/ J8 J! h4 tappraise-time' b% j' _8 @! p% m! ]
;;
当前发生交易时的评价时间
5 L' p( ]( s8 S0 g2 ~5 wlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
: O) y3 b/ Q$ c- |/ ntrade-times-total, O5 k, T( C' x; G( P. r, x+ V
;;
与当前turtle的交易总次数
& |+ x0 }# J5 e& w" a9 i, A7 jtrade-money-total! F" Z, s3 F% W6 r
;;
与当前turtle的交易总金额
" {* V6 ~$ `2 L/ |, W# ^# h* D% k9 Jlocal-reputation
! i5 E7 {7 B/ i/ o+ Cglobal-reputation
3 |: F' R7 m) Acredibility7 S8 N. w0 i$ D- a3 Q
;;
评价可信度,每次交易后都需要更新! v1 x; c* `. n* i& I
credibility-all
" V8 ]& P  L& K1 I7 };;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
7 t4 S# v/ c6 g* o; i. m
* a! R% c, p; B5 g( I! 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
9 q5 V/ B: o! o2 y1 Y' Xcredibility-one- ?' B4 P& g0 \' m9 F8 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- S1 P3 t' B, b
global-proportion
  _& L! C4 q8 T! Pcustomer
1 V" A$ n3 `: Y, s/ |; l5 icustomer-no
  z2 }5 N; z+ }trust-ok
' h0 ~2 `0 Z2 Z5 g% K/ n, [5 Xtrade-record-one-len;;trade-record-one的长度
6 i) d5 V: t$ p* _* V! S. C]
( m6 P, _9 J4 S/ `" \% j5 u1 |
5 G6 l7 u5 m' A& |+ m;;setup procedure
  k  g& I, z5 d1 Q% O1 k# {4 t4 D
+ ?8 |( ]: O% ]to setup
3 l2 S, M7 ], C# D  _: c. ]6 Z6 x, h! a" l2 ]  O
ca

3 K1 _5 N) j! h( @) j
& s, A2 W8 }% N* I6 b* g; l: hinitialize-settings
" @. b; Z4 A- f( `* b& s

9 F7 |6 p) n5 S- [2 L& l% Mcrt people [setup-turtles]

2 ?; M- B* i- K2 g' ]; I6 D' U0 Y9 o+ P" C3 |+ v. I
reset-timer

3 Y" S8 A! e& f! u% x) F1 L
. \/ i3 L  e6 Gpoll-class

4 ?( D* i& d' R/ f; M& E" x3 w( z9 q$ v- f. z, n$ V7 _
setup-plots

0 }) i# f! N. S6 {% I/ r4 I) X. e& K5 _7 p: L# J  s
do-plots

/ d/ k' {' I, f/ bend% l7 K5 Q8 w/ ^0 y2 Q6 [8 x  I

9 }8 h2 @7 u& u% ^% z5 jto initialize-settings
% |( d  |3 m, x& l8 L# A* C; ~, E) T& R# c. L* L* V
set global-reputation-list []
. F' |. C7 [( \4 q) Q

5 w" C) b0 o( z1 Vset credibility-list n-values people [0.5]
* P& y4 W" b& g) Q# W, r, n# E

: U- e7 _2 `- Y0 \; u4 G7 L. E4 wset honest-service 0

" u) \' [  V4 i0 V  U( N2 Z/ P# R" w
set unhonest-service 0

. f  S' B7 i  }& K' W% b( T* ?$ |; I8 \! M
set oscillation 0
5 V0 O1 u8 y3 u; O" U* f' g; Z

  h8 g3 {: J9 B( b6 g8 L1 Oset rand-dynamic 0
  W! x: ]0 ^2 L# L7 s4 G
end
* ?6 i# \; f6 u; X! H" Z- V0 L1 K$ O5 p, K
to setup-turtles , u' V8 j, h- Q. u9 z8 O
set shape "person"7 u3 J5 K/ h& r. E. d; v
setxy random-xcor random-ycor# n/ Y1 f7 _! L% q4 n7 M
set trade-record-one []
1 J# `0 t! c/ _% I  v$ b, T8 F, I4 o

! y( W  T1 Q& [1 wset trade-record-all n-values people [(list (? + 1) 0 0)] : u- u' ^1 |* O: H, }2 v
$ }7 V7 K2 R( J9 V4 W" k
set trade-record-current []/ p. L( c' p6 L2 r8 T# Z8 N. X) b
set credibility-receive []9 R: l  m! A- q6 n
set local-reputation 0.5
3 Z# k  j( B5 I/ [6 k" Gset neighbor-total 0  F* u0 J) ^; Q- V  a
set trade-times-total 08 u, S/ Y! e% u1 d; p# s
set trade-money-total 0
% q0 x4 q' W3 ^set customer nobody
- L* O- J: H* X) ]. v6 eset credibility-all n-values people [creat-credibility]. [% X( x+ }$ b, s# v3 d
set credibility n-values people [-1]
: E$ X, u' @1 Y$ {. ^get-color; R/ I/ _$ U8 R. p- c

* `3 J! X# {- k9 K" Z6 lend% l6 ~" Q; z9 H" [0 I4 \0 R% b* Q

1 s0 X% k1 l, j- [# x+ zto-report creat-credibility! G9 O1 e; F4 e, o3 Q1 h; v
report n-values people [0.5]
$ `& A) B% o9 C6 m2 K$ e; Vend8 `( M  M0 w9 O, S$ I! F
' M. m! ?8 Q, i% J/ o4 e: k
to setup-plots, ?- t. ^- H7 i6 ?

: v" A) |& j$ @; sset xmax 30

) i* e( o& y/ v7 N; [
" j2 [( U" e) Cset ymax 1.0

! U! S# p) D" @. U7 Q* N9 k( h6 B
- m9 k* Q! k7 x& A- lclear-all-plots

# ]1 T* [& ?+ F( u
; n* {! P# t1 b+ `setup-plot1
4 Z0 K& y% X, W1 ]  w

. {5 ]+ d2 D6 r1 C& H5 ?4 nsetup-plot2

, R  i1 a, ?5 d  N8 D' e
$ b& W$ D7 n7 S2 v3 v% v: J) Tsetup-plot3
4 s" U  v/ G8 ^+ l3 _
end
% P! t; Z. h4 N7 A1 t8 w$ F% G& G7 ?' U
;;run time procedures- p# U$ Z+ t; M4 ^+ k6 }) h
7 v% I4 Q) W* B) W7 ]+ ]; ?% F: r! m
to go! S" ?/ W! r& |0 Z- P9 K  y% M

& Q4 ^. N9 V% [8 C- E" ^% Nask turtles [do-business]

/ |: V6 r$ `: K8 X* X# [end
5 U2 S1 J2 w  p5 U! U' g# |3 v5 B$ C! s
to do-business
& e4 `& C3 B3 C. V. X/ z$ N+ E& \
2 Q( F& B" L/ x" E. v
* g0 [4 e8 b9 y- B
rt random 360

% _% V2 }2 s  F' F4 s) j$ B/ J; Z
' U0 M8 P6 z7 y0 ^6 h8 i9 M) Nfd 1
* I  |" |4 f. k0 j1 O

* A- K  H) b: e, j0 w3 pifelse(other turtles-here != nobody)[

7 z& \. Q$ X" ]  v$ C8 S2 Z1 @. e
set customer one-of other turtles-here
1 ~; n, a' `+ S+ q

. m: L' l) g, [! k5 ]1 {;; set [customer] of customer myself
' m5 |: b* w( h; }& J( V

; P; I! j* Q  Tset [trade-record-one] of self item (([who] of customer) - 1)
( o. g7 L, @! T[trade-record-all]of self
; |9 x8 F4 l* a;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
+ A6 d. ?) h! k; A+ n  }
8 Y* c4 C/ h3 m& A6 h9 P# E% M( J- d
set [trade-record-one] of customer item (([who] of self) - 1)- o% ]; m+ g0 o9 }) h6 r* H
[trade-record-all]of customer
0 `0 M/ E" n3 k. }0 y7 R
9 f! c. x) l; g" P2 C
set [trade-record-one-len] of self length [trade-record-one] of self

6 ]+ f0 _% T$ j4 ]% W, |) T( }
( o: \  e8 E$ W& t: A4 |# Qset trade-record-current( list (timer) (random money-upper-limit))

. K+ B3 s3 ^$ Z. z. [; E5 |
2 j1 z1 L  H0 ^& S3 lask self [do-trust]& X6 \9 W$ h3 m9 T
;;
先求ij的信任度
( n/ K4 s% |/ X( k2 Z: o" L# z& `: f
if ([trust-ok] of self)
, ?2 n9 @/ Q' l/ B: e) B;;
根据ij的信任度来决定是否与j进行交易[
* [9 t4 G( b2 Xask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself" K4 g# d( [4 M. V$ e: C( K
0 w$ ?5 h! Z9 |
[

1 R. j9 ^* P# O6 F
' F# e4 X0 L/ y7 g. @do-trade
: W/ F8 h7 E* ?

# g1 i) R+ n( A' [2 C& E$ M( pupdate-credibility-ijl
' {# t& }+ t7 H( P

2 i* D4 ^5 }1 R7 L% D4 v7 kupdate-credibility-list- c  Q8 w" y1 f: K* x! l5 D  t+ ?
6 [3 p1 e$ }7 K4 Z/ o" G* f

8 g7 N5 T; P% f- t+ ]( Zupdate-global-reputation-list

, r* |3 U8 W" P2 @' {  O2 R2 Q" t) ]$ c8 \/ q
poll-class

: |) d4 x/ _8 c$ o2 Z  L8 _. v& E5 E9 `  W! B; z# u
get-color
/ }/ L1 a4 d/ u

: [6 g* c5 ?, ?& a( L7 j]]
' M  t% |; T3 r% r% O2 R4 P4 x( k2 T/ d+ a* O1 f% S5 K. I
;;
如果所得的信任度满足条件,则进行交易
5 F" c5 U( i# a9 y* O
4 T: x, q  v( @, h/ j/ Z[
" M% I1 ]/ L; D+ Q% P
8 y  S6 V+ _7 G* s: v! I
rt random 360
1 ~- w+ u! Z( `2 r! Z+ W5 Q
! p) V5 `/ U% o: J; ?7 q
fd 1
9 O8 Q- w: |# `7 V# c; q( @

6 w5 F4 }6 a& `8 I6 F2 `]

9 i4 U0 i7 }, @/ ?6 C. j: n: ?4 q" J9 Q4 `" D/ ?+ f* a
end

" @" v, H! y. ]9 f& }2 ]) t* F: U: K- X: O) W5 P+ _
to do-trust
# i3 Y/ {# C1 A( Z( }1 U/ Y( fset trust-ok False6 i4 ]4 m% t" z2 k$ k

7 q3 x! w0 s! C5 n, K

9 c1 ^+ |# O( b0 n8 U# Clet max-trade-times 0
8 e! _" y' ]! l, Gforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]+ e1 M) v% U3 B: X
let max-trade-money 0) R% V9 P1 C; Z" o7 M  g
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
" ]4 f# ]. S; `' T, h) l* ulet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
9 N' |! r/ D+ ]: m! x( V# x0 c
- f' d" C1 Q/ U! e! I

( s. O8 }, o4 b2 y% @, n  Gget-global-proportion2 T& P+ B# o5 d6 \
let trust-value
* x& O0 n0 b8 d9 M) Slocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

( x2 p; `5 M, e" E! E) nif(trust-value > trade-trust-value)
8 S% A' v9 r' A[set trust-ok true]5 X% c$ n8 j& s8 ^- Q! C" z
end
6 d; e- r# i9 ^- R+ a! \
( b' `- r( x. k% dto get-global-proportion
  W9 O& P% Q2 d' u! }, Qifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
! W! {! i, Q' \5 ~. X, X[set global-proportion 0]$ J0 i2 v5 s% p
[let i 07 V- @: C$ D3 a; l2 i
let sum-money 0
* N! C" c" P3 t. ]6 I" Lwhile[ i < people]4 z2 I, b% c+ b$ S
[" @% l! i% R% B- `
if( length (item i
7 }5 d( u& T6 S( V9 `" @' Y9 }( I' {3 {- [[trade-record-all] of customer) > 3 )
& N6 q3 i& J- _0 R# Y
[1 Z0 {, g, |1 U- Z$ M2 _2 a* H
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))* d) P/ d  g& Y6 @: z- J
]
1 H  B( m8 o% O1 K* g; Z- F]
  Q- }1 B5 a) ~let j 0! V! U+ N) }& A$ `( U4 b
let note 0
, S  E) U2 |) \0 x% \6 z- uwhile[ j < people]
1 }2 n* q& W  G# y  U0 N' m$ a[
( L0 j" \. o' ^3 o( Hif( length (item i+ J) O' t" A$ X1 h+ C/ a* B0 G) n
[trade-record-all] of customer) > 3 )
/ q7 t$ X: U# Q1 z; h, Y9 Y4 I+ d
[
  F' X4 i9 _. n  X( e" U* Yifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
" u  ^  J( R6 u. ^7 l[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]* K* Z4 f6 e) X7 [* l& I5 l3 |
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
  J9 G0 d$ e2 Q9 ?/ ~3 W4 E! }]  f: K, Q& d! ~3 }1 S5 ?
]
- G. L/ G; A0 A. G2 ]set global-proportion note
1 M& K% X, ~9 a. a]# [6 V" L* {  w* b8 u+ W
end) c- v+ R  m2 G+ r; f0 D8 g

: y+ S" B3 T$ w+ ]- y. n7 Cto do-trade. z' K) ?3 z2 P
;;
这个过程实际上是给双方作出评价的过程8 P7 [5 I. S" b4 N0 T# W
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价/ r+ x) B& A2 `& c: B( n( P
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价8 ]! W+ Z* d$ m* N0 a
set trade-record-current lput(timer) trade-record-current/ P7 T/ p" v6 E
;;
评价时间
" N/ X4 G  |( X. h  u$ Vask myself [$ {! R' L5 S" D
update-local-reputation
4 N, i9 F1 C9 S* I1 Aset trade-record-current lput([local-reputation] of myself) trade-record-current
, s  H' P/ I1 S' U. l( p]
! t1 ?, D$ S6 {) i1 o+ S0 n1 L9 pset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
3 s# e$ k$ {8 u( V: n;;
将此次交易的记录加入到trade-record-one
' p7 n  s  U' N" L" V) Wset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
7 d  j( l1 `8 N7 s* [2 `: ?( ^let note (item 2 trade-record-current )
; x0 u- h+ Q1 H4 U: Dset trade-record-current' C# {9 K  u' d7 ]6 D( P( {
(replace-item 2 trade-record-current (item 3 trade-record-current))

( w9 ?1 A. j6 h5 ?, v5 q7 Xset trade-record-current
( r3 ~9 M9 N3 F$ b% X: a5 V(replace-item 3 trade-record-current note)
- i* K0 t' O  R; s' j  d8 H0 W# c2 x) P$ J% {4 H1 [( r
$ S, D0 Z2 p4 I+ L- R% y
ask customer [
7 g) @9 k& i9 C- p( \$ hupdate-local-reputation5 L: h" t9 d; _+ T0 H( c
set trade-record-current  m+ ^6 ?7 k; q6 X7 ^: j4 k
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
; J. t# G  G$ q* ]) F: ^) F( T# h
]
2 k* y+ ~6 x( y. J# M4 h! D1 T! W
% A! ?6 V! a7 J0 a  o2 |

1 S3 P. s: W& ]% e% vset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer7 p2 I7 K* e6 l/ a+ g

9 |9 W/ o7 b$ p* l( U2 Nset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
" L0 C$ |. v! X2 U/ _;;
将此次交易的记录加入到customertrade-record-all% j( [4 Y5 p; ^+ [
end
! s, j3 {' i4 e' ^; [' [7 _2 m# [
to update-local-reputation, Y& x4 v1 P3 ?& o
set [trade-record-one-len] of myself length [trade-record-one] of myself, G0 O& E' g& ]# G! j
7 q( e, C- c  B; w$ o1 c4 J( ]" C

+ d3 C+ q3 D, o5 U+ E/ o, b. D+ Y;;if [trade-record-one-len] of myself > 3
7 T) \: `! c- E$ x2 c) p
update-neighbor-total; R% D; T! Z6 N
;;
更新邻居节点的数目,在此进行
) B' m" ^6 Q8 f0 z, t) x) Elet i 3
2 a' S( Y" Y6 t6 U; clet sum-time 04 n5 V& `/ z# }5 @. S5 K: @7 i: M' a
while[i < [trade-record-one-len] of myself]! \! g: V7 o$ S! y  W# u
[
0 G2 f6 p9 R* F  M0 D) J/ Tset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
2 R4 O0 i4 K: h) @( I& @/ S9 kset i! C( r3 v. I1 }; e
( i + 1)

% C3 j1 l3 ^7 h- P]
/ {3 c: ]) O( J" ~let j 33 j; s9 k/ A  l4 `3 s7 H* P
let sum-money 04 Z+ {  g& c, i2 T5 [& k, a) n
while[j < [trade-record-one-len] of myself]; x7 P$ m# W; Z% n
[6 Q( }% X  V' c* H
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)4 s6 M/ Y+ u+ B$ a- f5 @8 p; u
set j+ S4 k( y& N8 `- L7 x9 w0 U6 m6 M' j
( j + 1)
' [7 `2 T2 \' Q2 t, Z
]
7 V. s+ C7 e& Y: Y1 T- k2 xlet k 3
9 S6 _4 {0 E' O, m0 r& ~! _let power 0
  x$ H7 N9 F4 h  i5 X/ f, v1 q0 Xlet local 0; D: e$ u  X: Q4 e
while [k <[trade-record-one-len] of myself]$ H7 l" P# @  N
[  F& o' C  ^# q, q: U" N. d
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)
" G2 H; a" a9 ]6 I; Q. wset k (k + 1)$ J" v% a: c( A6 [; @
]
  b. [# h* S. N! y9 yset [local-reputation] of myself (local)+ m" [2 x1 |' b3 V" t
end
& i  X3 g" u1 _+ o4 t
) V0 c- h  o- O1 ^3 E% tto update-neighbor-total0 s6 B- G: U% C! N
8 r6 P, r# [& @" c5 r. |  @: B
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]4 y  t/ K6 `/ }# y- h7 l/ E
. s5 g$ d& T0 r# ~" ~) `
/ ?2 g6 n6 S9 o% X" W: `
end* ]# I# e0 h9 Z0 w
; p' S5 h; X7 E1 U" k/ X2 r
to update-credibility-ijl
. g  ^, x* {3 i7 I1 @! }9 e' R; F' v1 Q  r7 s0 V
;;
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。5 M& b* W7 r9 ~% _3 {. m  M: X8 j
let l 0
2 |  I5 j% J- l7 W2 `& |+ {while[ l < people ]
: P% _9 Q2 x7 F% m# s3 d;;
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
. h% z# z. E0 }$ ?[3 _0 {( u# E# y+ ]
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
0 M) U2 u) w2 a. h4 t: ^if (trade-record-one-j-l-len > 3)
# n5 Z6 {7 b+ D- p! {: D4 m[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
" M, ~0 `8 v4 blet i 3
7 W7 y- H7 d+ I; B1 |let sum-time 0, f' Q: Y; V5 L- {/ O0 k
while[i < trade-record-one-len]
: X& t3 C' K- \, [4 p[
2 c# H$ x3 G- K0 ^& S1 f( Iset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
: f/ L+ v5 r3 b. T2 G& Qset i/ b1 t) F7 P3 ^. K
( i + 1)

0 Y3 v; t0 F3 I8 V" j]
7 }. P+ h4 ]8 X5 @let credibility-i-j-l 0
- y% k# B  B/ e3 K6 S! U6 L7 `;;i
评价(jjl的评价)9 g. F3 P/ x8 t8 D$ ?# I1 k
let j 33 L  Q+ ]$ x& ]2 E' [
let k 44 b8 l4 f  a' R9 ^+ Y; f& s9 E. J
while[j < trade-record-one-len]: Z3 D" s6 s  w) e
[' h  o- a% g: F# D- `1 B
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 }+ e2 h. W* P: O3 t2 z& c8 |set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)0 i# _+ B) o8 v7 S! L# p5 m8 ?* i
set j+ ]- H2 f" Z# ?5 W
( j + 1)

; s& }% H$ i& u  X]6 y  v. H5 P7 j# p$ X9 v
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 ))
! ^* e4 U( m7 D! E6 K% D8 q& g9 G7 j# m
1 {& U9 g( {4 w8 h5 D: I
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
, c+ r$ ^: Y9 s+ \0 T;;
及时更新il的评价质量的评价
! K) q3 n) |5 e. H, mset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]2 Y) D% K* @  j. F# [7 ]
set l (l + 1)! M/ u) n+ r/ K( Z4 `' n+ v% y, h
]
6 S/ B+ i+ V* l& Gend1 v( D4 @3 B% o. H8 Y

9 [% c: w% v( e6 w/ Cto update-credibility-list* v& x7 S7 C, j6 x) o+ {- g
let i 0
& a' L$ ~! a; A( O: u+ Nwhile[i < people]' L, v6 {8 n% @* e4 ?
[- W3 `8 `+ B/ {* l
let j 06 K3 y& I: O' I8 E8 A! d6 b$ w, m
let note 0% d5 D6 p, k" n' ^. r; R# M
let k 0! ~; y! j' F8 @
;;
计作出过评价的邻居节点的数目
( K1 D/ M' l0 Z2 g8 @while[j < people]
7 d9 v% t3 F% E0 `8 @9 w[$ ~0 Y' i' F- O/ N
if (item j( [credibility] of turtle (i + 1)) != -1)
  C. x1 R% F) R0 g% z0 ^;;
判断是否给本turtle的评价质量做出过评价的节点& l' s" ]6 G7 r# l; m
[set note (note + item j ([credibility]of turtle (i + 1)))
! H! ]6 K! l# g;;*(exp (-(people - 2)))/(people - 2))]

, g8 ^) o  {0 `) L) B' b0 b; Aset k (k + 1)
* _- i; d- m8 R) A6 \]
+ T  Z* ]4 F6 C) L6 vset j (j + 1)( n% l! k$ P: R7 U. {
]
4 H1 e9 D! \/ ^1 X2 M. C, Dset note (note *(exp (- (1 / k)))/ k): m4 P" M* @% p. n/ o' f
set credibility-list (replace-item i credibility-list note)0 d7 T& Y5 ^+ Z+ ?
set i (i + 1)1 X& F3 I5 L: t: j0 S( p
]2 \* E  N0 n- \' Z3 J# _
end
% H+ K1 q0 A, v* Q1 a$ T
. [$ ^+ z& \7 I4 Jto update-global-reputation-list  i7 X* ~7 y* @- v1 U
let j 0  P! J; d$ A& x" g7 ?
while[j < people]
' n5 e# a8 d( E% {  A[
7 {+ v( Q* k9 U3 x& E. ylet new 07 E/ u! _4 W$ H3 _* s+ C! B
;;
暂存新的一个全局声誉
+ ~. q# l! u8 _! _, Olet i 0
; ?$ ~; N) T2 x2 Ilet sum-money 0
3 G# i3 _1 k# R. v% C+ M) y4 d) p7 Klet credibility-money 0$ L& [' @0 m1 W9 y4 q* h
while [i < people], _/ ^9 u8 a8 ~4 c6 A. h
[
3 C  R( i: D9 @+ k/ X6 s% R/ Kset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))* L5 C7 {7 C0 h8 N" C7 `8 a
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
4 ^/ x( ~" V/ V1 Vset i (i + 1)& e) `- r8 O# j) m
]7 k9 H) f4 e% ?; c; U% y
let k 0
1 B+ f( M3 }! v- q7 z: Wlet new1 0" }/ \# w0 b2 m& A- ^
while [k < people]
& k& r% j7 m; `/ {+ k8 R8 @[1 k, D+ h( T1 G) W* B6 S/ w
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
; x5 }& ^" ?+ n) q, v, e8 T( uset k (k + 1); U6 a  O& C/ f3 {; s
]
& D8 `# B/ q( I( X  N9 Lset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) . I1 |" u& D- v/ e
set global-reputation-list (replace-item j global-reputation-list new)
+ r2 q% M3 v* B! y3 L, zset j (j + 1)
' U) F: i0 d, K9 A& g]) q) }* x1 }% w! {4 h5 X
end! O$ F" M8 L1 H

3 C" p, ?$ l! |: X4 |
4 f- d+ W% E6 m0 B0 [: m) k* g$ S; v9 h8 I: S1 `. C/ J4 ]- b
to get-color
, U6 q; U0 X4 W
5 a' r9 |3 V$ B8 z6 i+ i' Sset color blue

, h, ?& w! R  n' Lend& I, M( C, W/ Z2 Q
. T* y9 N$ G% Y" z$ I' `# c
to poll-class
4 s1 l& |0 t- Bend! G9 C4 J# Z/ J3 k9 {

- x: t% I+ p. X: E* B. ^/ Qto setup-plot1
  Y2 {* ?3 L  |
. U: I% `/ W1 Z6 S" Gset-current-plot "Trends-of-Local-reputation"
" ]' b1 d& |6 H) j- r; u% D0 f
, T/ S9 V! M! f  t4 j* ^8 d
set-plot-x-range 0 xmax
: s9 `; c+ J$ l3 F: O9 V, L

" w& t3 f2 s3 z$ T$ oset-plot-y-range 0.0 ymax
, U6 I& H1 [& X- w. F* m
end
3 n# f, k& X, p1 k3 E: J: H& e6 B+ n  W# g
to setup-plot2; a$ e+ x/ Q* C0 I

8 m1 ?9 e' f; O# Wset-current-plot "Trends-of-global-reputation"
5 C7 l4 r9 b1 I$ q6 \/ _4 Z8 V

7 w5 x1 R6 B  X0 s3 x) pset-plot-x-range 0 xmax

% R0 y+ S& N, _& e1 m
! H6 k' `* U* ~2 s% fset-plot-y-range 0.0 ymax
) q2 F9 D6 @, w. k' X
end3 I! M( w8 U4 D1 I

- n$ f3 k/ J3 {2 Ito setup-plot3- z9 m0 X; v' p/ O' h- ^) S
2 G, `) l3 F1 a+ q+ Q# t
set-current-plot "Trends-of-credibility"

8 e& ~( D0 \. d7 I" `, _0 |- i# H: o5 ~' S! q  o1 v) D
set-plot-x-range 0 xmax

  r' e% ]+ N! I" t3 z2 w* N
( K8 \! i3 b- |9 x% [) s* hset-plot-y-range 0.0 ymax

, J) T8 Q  ]: u  D; }7 F7 s: rend/ N, J6 }4 H8 d7 l6 d7 W6 e

# T3 l& d$ O, A$ |to do-plots
1 s, ^: I+ U/ p, A; y. {. \8 iset-current-plot "Trends-of-Local-reputation"
9 j! t7 }4 B( R- G7 c( vset-current-plot-pen "Honest service"1 c5 Q1 ?1 j0 D  e
end- E2 Q" d, j+ O# T
0 \: s* n; }9 ]1 B! a- Q3 k
[ 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 @' k% \* K) i) C" \5 S- Q4 J

" D( _! c; r# k/ T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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