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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:$ u4 [& r$ \& r% [
to do-business
( F7 j; F) ]. o6 I rt random 360
$ x0 y# c! _$ B8 ]& `7 v fd 1/ w2 u* d: n0 b5 i) p
ifelse(other turtles-here != nobody)[5 G' J5 C. }- E: Y  `" @! }
   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.& e2 c0 Q+ M/ x# O* Z
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    1 P1 a; T, }9 ~) c( j, m) k# S% Q
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer; ]7 i0 w: Y1 A# U! k  v' ~
   set [trade-record-one-len] of self length [trade-record-one] of self
; w7 l% Z- `2 J   set trade-record-current( list (timer) (random money-upper-limit))
& K% p2 ~. H8 A* L5 ^2 }
" C& d4 p1 x8 e- D问题的提示如下:: d$ N% B/ C4 G& v5 u- p

  C1 r7 Y' p" I6 Q4 Y; ?# Cerror while turtle 50 running OF in procedure DO-BUSINESS* U1 p* t) J) O2 z
  called by procedure GO
: d  @& W* t5 r4 p3 R  {OF expected input to be a turtle agentset or turtle but got NOBODY instead.
) v% j3 x: Q( _; Z2 H9 L
(halted running of go)( w# Y, V8 H( I  j% F, f

: f: Q. U; m. P, ?! `5 H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~~
+ @, a% W2 A# ~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
/ W7 g+ `/ p! {$ m9 j! Y9 pglobals[
4 I' V, U1 G; ?6 Zxmax
8 _  X" M% z! N- K; _8 Zymax0 {7 I) P$ q* d- E
global-reputation-list* f" q8 k! ^5 z* j4 G. ]

" C- x; Y6 V7 y7 v8 a;;
每一个turtle的全局声誉都存在此LIST
3 I9 x6 ?( Z2 X( t$ x; F% ^credibility-list
, I- A3 k  y* M! O6 D3 J;;
每一个turtle的评价可信度+ c2 [' `+ k/ D3 K8 n
honest-service# Z$ A" ]$ n% i. r- K2 y
unhonest-service
* X1 R! O0 ^  @: [9 T( Woscillation
/ F  b  c1 c- u3 C% |6 yrand-dynamic* ?$ O5 ]: r0 t6 x* M
]
* X9 t) l2 U) u$ H' Q+ l$ Z$ H
. j4 L9 E- _/ Cturtles-own[. ^9 b+ s1 r* z- _4 q3 ~
trade-record-all. _0 I4 l7 K/ @5 ^/ E/ y$ @
;;a list of lists,
trade-record-one组成1 q3 M3 ~( X) W
trade-record-one
; [; N, K' c3 ?, q- a( i;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
3 x: U- A/ k) I- C0 g3 K0 m- f
- S) g- S- z+ c0 I6 T! L+ p" ?% ?;;[
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]]
- p  T2 k; b4 }' J2 \9 Qtrade-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]
- y6 `7 [. z6 f& s( Ncredibility-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list0 D' e9 _, _4 C0 s1 o) J
neighbor-total
$ j! d) ~/ J4 l% c7 _, J;;
记录该turtle的邻居节点的数目
  X9 ^. J. g/ T1 |+ J( [) Strade-time
% x- J1 B4 r: o. K, P" p' N" C* j;;
当前发生交易的turtle的交易时间
' r1 ]: G5 @: H0 Q7 c; bappraise-give. f( f. k3 h$ ?8 L/ ]6 [
;;
当前发生交易时给出的评价
9 y: j% `$ F! Y6 m& B/ K( Mappraise-receive
1 i7 d( y$ N* w;;
当前发生交易时收到的评价
* E7 [$ K* U3 zappraise-time
8 O# E( l; u) ^3 C1 }+ Y; {8 w3 @! l;;
当前发生交易时的评价时间
" M/ ?/ y4 |; X5 D( }0 S  Zlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉4 H+ l: U! `6 K$ }" x; K' @6 W9 [
trade-times-total
& D/ s4 E: b" b9 H0 H/ ~: s6 J;;
与当前turtle的交易总次数9 a# c* @( U' W0 |
trade-money-total. q( \" A9 ]4 ^0 u% \; I! T! Y
;;
与当前turtle的交易总金额
' R. ^, h' W/ ~3 L: \5 C/ ulocal-reputation6 l. C+ |; b4 X) O9 E& E9 G$ x
global-reputation
. ?  m! |$ E4 o7 ^. `, ^; Jcredibility" }- K' q0 U# y& [! X* Z
;;
评价可信度,每次交易后都需要更新/ v- a2 b7 _) n( o
credibility-all
1 k2 j7 ^+ g  Y/ n) [/ e9 l;;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
& ?2 Z9 L. E, H
+ w0 A7 o# u9 f3 ~6 K: i  o* o2 P3 [;;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
% S# o4 x7 Z  c8 I! l; ~8 n9 qcredibility-one
  {" m) y+ p$ q;;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
3 u: z& L) X! [( D2 p( Kglobal-proportion2 i/ j6 \; i1 l$ V- h
customer
+ A- I) T' q! v6 Ycustomer-no- R/ b! ]+ R" m2 M9 s4 y$ f/ P6 f
trust-ok
+ L  x) K3 C. N$ r" btrade-record-one-len;;trade-record-one的长度! G; A+ G- p  ^( Q: y
]' d7 z6 D: X; e9 C; }6 J

+ X! w2 \; U; Y: a/ X;;setup procedure( P5 T2 t! D; H& v8 m

: w  j% m: E8 }+ x" Fto setup
! f7 y+ M& [7 E' Z3 D; l* P- P- f- E" |
ca
4 ], E4 e/ H1 n  S2 V

" j( Y8 l3 y, N% R0 p8 w7 q5 K/ ~initialize-settings
$ y0 b* E! H% e% @' Y
) J. S, I) @0 v, l, l- j; V
crt people [setup-turtles]
# t6 o! R; e% \/ s/ A

, c( W7 x% E- O, m, n! v8 f6 _  Nreset-timer
/ {8 g3 c  P- r* K) l; W* c, i

0 D& N" A( c! T- Qpoll-class

3 @5 J6 b" J* @; v2 J& J, L+ Y1 d6 b9 m" B9 ~
setup-plots
! q0 C; l2 K; d+ e( ?) C3 c

1 n, y7 {+ s- O9 ldo-plots
$ O: L, H7 C" ]
end
$ @& c$ j! D* ?4 p2 p! T# Y) L1 s& X; J' ]4 e8 O# t- U" I
to initialize-settings
' D5 ]( D+ Q. A  W# p4 W) U) _6 {4 x: z
set global-reputation-list []
5 \" I; E' ^; z+ b2 _
' v$ H4 B& M- @
set credibility-list n-values people [0.5]
3 j! {" b9 T. S6 @5 A% d3 f
; u( o8 _" e) N  V2 [
set honest-service 0
& [' M  C& M2 e
: ]: ~1 `/ P. p/ D
set unhonest-service 0

3 m" z/ \; b3 {
9 K; ?+ [5 u' |set oscillation 0
) Q0 L4 Q% z# e: U7 @8 F

* o7 `$ D6 q8 F7 D& P4 [; H+ F/ f: y7 yset rand-dynamic 0
) H4 K- B6 B0 y- {9 i; h# f) Y
end4 C- x1 M; l; I
1 v5 Y& I: v3 m) e6 s5 s9 N" ]# j
to setup-turtles
/ \3 p9 x6 m8 Lset shape "person"; t. Z3 |4 @! ?$ P7 ^) o
setxy random-xcor random-ycor6 q; Q" }/ w( ^
set trade-record-one []
- \" c- {4 Q# C4 g* w# d4 i2 W6 h

% I8 f$ K3 A( l# e# x- R, d: Bset trade-record-all n-values people [(list (? + 1) 0 0)] / R1 i# x" V4 k5 ~# H/ T3 y
* B( w6 p) Y& p1 n- R9 d5 p! ~- Y# |$ ]
set trade-record-current []
$ }1 t# f! c! Eset credibility-receive []4 P2 l& u8 M( h3 [1 u% y  p- Y* B
set local-reputation 0.5( B4 Q# ~! k: W* o
set neighbor-total 0
6 f: r/ M% L! l$ Cset trade-times-total 0
2 {" @8 \; E; \set trade-money-total 0
- f  I4 l/ H6 S$ y5 Eset customer nobody; B5 G+ E! C. D9 O9 y3 N* y& Q- f
set credibility-all n-values people [creat-credibility]
/ J: G% w- \3 P' v# p) Mset credibility n-values people [-1]
; ~- q/ h. r4 U1 Tget-color- b4 l( |9 j1 F' O  H' G& K& p" R8 O
( P2 {7 H& r7 W
end9 b5 V' q  n4 }1 w. I

. [) ^+ E5 i: B3 H* v" ~3 j' e& zto-report creat-credibility5 `- z. G4 g- l4 w1 L; ^
report n-values people [0.5]3 f' c* R0 ~& ]2 S: ^
end
6 s! y9 ~$ g  C9 F3 \" p
- C$ R1 @5 g( w" N6 ~$ T) f& I' F  bto setup-plots
4 y+ H+ |8 T: C/ O' d7 D( R3 w
set xmax 30

5 I" O5 j6 N) N3 G
& _3 E  k8 ^$ Zset ymax 1.0
0 u- B1 x6 d% \" R

0 C1 S) h+ s( \1 U+ jclear-all-plots
2 U0 D: C5 Z" K& M  {( E% m
2 ~4 X* H( b5 L8 o+ }. i
setup-plot1
" {5 O9 V6 V% \0 \7 Z* s  U( Y

9 K: \' m. o: csetup-plot2
! m# _9 v/ v& x
4 C' V! e5 {( w( T
setup-plot3

- M% i! S" N3 D' R) `end
. ?* N; f/ \2 R9 q/ B  K! j1 S1 H2 _7 N
;;run time procedures
9 ]4 A% K& b4 D. H, U6 h3 S8 N
2 L# w. @+ U0 `! v5 T6 nto go) F3 U4 m: x( {- [7 P
. ~, m/ m% }( j% M, R
ask turtles [do-business]
( A: @: u. k9 o, C: F
end  `% t7 r: e" M0 l$ `: T
# q+ d- ?; A4 {% K; C* m* d: ]
to do-business
  \  e' O" e: ?: c
! O2 i* _$ a3 k8 q, B, D
+ a9 _! N9 y" q8 ?( s% b. `$ y7 v
rt random 360

8 U* o2 m; a/ J! C7 X
7 f6 B  U3 A* ?. n3 |fd 1
5 F4 n* {/ l+ e

: @% W* I( L% Y4 ^& t2 u* T. Wifelse(other turtles-here != nobody)[
+ Q/ |$ G$ `  @+ Y) V& ^
% D0 e* e8 e0 R: @3 v7 t
set customer one-of other turtles-here
+ ?4 c2 l, {( _. u
" _/ ]7 R! o8 x7 u! }, n  p
;; set [customer] of customer myself
0 X. w; ~1 Q$ a9 e  O

+ o7 v$ S+ \" Y& {set [trade-record-one] of self item (([who] of customer) - 1)' P. H4 @( ?/ K6 y( I* z1 V+ m+ T/ Y$ ^, O
[trade-record-all]of self% A: ^1 |- R' A8 g4 w
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
3 v8 w! Y4 r: E7 [

7 G" P; B& G) m* w4 w% }8 m7 aset [trade-record-one] of customer item (([who] of self) - 1)6 q( M! _5 [2 T* K$ X6 V
[trade-record-all]of customer

& ^  ?' G2 k, @; e4 f
' W1 Z+ h5 O* c! s3 m$ [8 Jset [trade-record-one-len] of self length [trade-record-one] of self
( X5 X2 K& N- I, m3 c& P

9 }: e  P( L3 nset trade-record-current( list (timer) (random money-upper-limit))

6 K7 j: ~9 U, |
5 H( a5 ?* B" D! w9 rask self [do-trust]* G- g/ ]4 y  {3 h4 e+ }
;;
先求ij的信任度( Z% u8 g( c! _7 d
( R! ?# _: Z  l$ }$ X+ U
if ([trust-ok] of self)7 G. p8 }: n  L7 _
;;
根据ij的信任度来决定是否与j进行交易[
) @7 k) `3 Z9 wask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself6 _3 i2 G. a1 N( V, I# k
" B5 {+ p3 j' K0 }1 a3 V0 u2 q
[

+ i" o. _, V# M/ s) W$ F/ T8 Y! V
do-trade

$ t) q, ]+ r& Q2 w" w, B) I4 e3 p! t: w% l8 T8 J
update-credibility-ijl

! G& X4 V3 o1 W
" o( |+ W5 d0 C& L9 l4 x! p$ `update-credibility-list
$ q9 l5 M  `, x, R7 S
2 `1 H6 c, g3 o
8 a6 ]1 w* M6 o' h( e5 z! `, d: B
update-global-reputation-list
: |6 }+ Z! x" F) g3 t. u

; ^8 h. j* P, |) [% Upoll-class

& r# m9 t! y- J* n
) ]) A- ]5 _8 Jget-color
& a( f9 s. g. d: j5 E0 u
% r# R* L- T% \1 i- U
]]
0 b% n* p, k) i" m+ J: |; z/ g: J# n/ ~3 {
;;
如果所得的信任度满足条件,则进行交易
$ ?( `7 ]) C. T& W2 }. y1 |! ^
+ r! {. l( T9 H[
! A& ~" L% X' V4 |! Y7 J: i6 `
) V7 i2 p6 z7 v& i* j5 K, x
rt random 360

3 @4 T7 m0 s6 Y
* X- s+ `0 ~; j( u8 O3 [  Tfd 1

' H0 C9 O$ `3 L0 J6 e
' w) h; _3 o& R0 j]

: m7 y( F$ {4 _* Y, b/ v- [: ^3 G" C: E0 f! p8 a% I6 w
end

. Z5 f3 l1 n5 l! F+ U2 q: Y0 h7 Z
to do-trust 4 W5 f. B+ w4 c
set trust-ok False
/ V' M6 j: K& E& F1 @* A
+ n; }% S- c" q2 I
8 ^/ H7 N% j" R
let max-trade-times 0/ l) E6 |' a( p" j
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]( B5 S/ h+ @& U+ @3 q
let max-trade-money 04 ]: B0 e- x" G
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]* L- \8 z# o4 L, l
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))% m- o. @. `: M" H2 o3 }' g
: q& ^+ T$ O/ p$ p/ P# q) k/ n, f

6 I7 ]; l, H* d" a# Y0 G: dget-global-proportion5 ^" q1 I: ?0 E& H
let trust-value" I! T$ @# A1 g& n5 b7 y- W
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)

5 k1 m4 d% B" M6 d% S) {; Aif(trust-value > trade-trust-value)' t6 o8 T: J  N; C+ ?- c% q# Q6 f
[set trust-ok true]% V  B1 c; p: e
end+ F/ s; U8 l. o/ a8 J  _
. a$ b0 T7 `2 S; q
to get-global-proportion
1 [& W- d; i  V9 M9 wifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
6 o2 t& \! W, U" [[set global-proportion 0]/ g( |2 T8 R9 [9 ^# O7 M$ N3 d# M
[let i 0# D4 ]  {/ g4 Q+ h7 X
let sum-money 0! S/ _" `0 H& I7 X
while[ i < people]
- G, `5 T6 @- u& ^) P0 {4 S$ U[3 s& {8 @+ I2 Y# S" P6 K! ]5 y
if( length (item i! q4 u% c9 w2 S# g5 `! }* H( k
[trade-record-all] of customer) > 3 )

- P# E( `; J5 \  Q- c. T5 N[$ P* f3 R* Q* W+ ]  }5 s
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))1 o" C* N  @; j& m5 z7 \
]
4 f) o% Z6 }! d5 v]2 N4 d& S& C6 Z& g4 W2 U
let j 0
: w8 v$ y9 G* @% k% e% Vlet note 0# o) ]5 L: R( F- h4 I
while[ j < people]
& m" l  a$ F8 l) R4 i. W8 C! E[
( u0 I: G( h/ R+ ^6 `# L# zif( length (item i
6 l: i( A! @8 L  [[trade-record-all] of customer) > 3 )

' y# W  M* o6 M$ L/ H[2 ^; m: z+ I; r7 }5 {# A
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
% u! A- O3 g/ ^2 V& z[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
9 B2 O5 b! r6 X7 t' Z: U: N[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
1 L  R! q9 Q5 H% h& E]
* J# {5 I- n: m$ p8 P8 r]* g7 p* C7 s7 p
set global-proportion note
: C9 U7 H3 `) J' z8 b]
- ^7 P( E: V) U! N5 Xend
' g' q7 R+ Q! k2 L! l
8 R) i* r6 {$ _) f. M7 `5 i- r# `% dto do-trade
5 E( t, V+ e# t. T- Z6 l  V;;
这个过程实际上是给双方作出评价的过程
, P, Q9 p  ]5 K5 w# j  nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价8 b2 K; a; r' I! P$ b
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
' C0 ~" W( A4 b1 I: c+ g, N) b6 nset trade-record-current lput(timer) trade-record-current
8 r, V  A9 C+ m, r1 z  q9 X: y. M;;
评价时间3 m9 P1 m" n9 w6 x
ask myself [& ~6 T+ H, i" q, c, K, O" u/ h& ?; F4 x
update-local-reputation4 V6 ~. u+ G; M
set trade-record-current lput([local-reputation] of myself) trade-record-current& H5 Z# s* @3 G( r3 c, A: q3 j3 c
]
0 A+ m  t# @8 v, J' Qset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself; q' H8 h; i* Z/ f+ A
;;
将此次交易的记录加入到trade-record-one
/ k% i, e4 C5 v+ gset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)8 V6 l6 @" M9 F6 y# O1 S8 f* E- _
let note (item 2 trade-record-current )6 a2 c- t8 n0 _/ o! b) v; u# S
set trade-record-current: C! u7 i/ I4 R$ a; M3 k
(replace-item 2 trade-record-current (item 3 trade-record-current))
+ B5 C* x1 J1 t' t  p* [
set trade-record-current. v: g# R7 ?( F
(replace-item 3 trade-record-current note)
" H, G$ ]+ y- d5 T8 E8 l) \% K' W. N4 L% h9 j
/ R  e% p1 A7 ]1 {# a1 V6 g# A
ask customer [
! b" X1 z' O+ qupdate-local-reputation) `( Q- z  n5 n6 e' D6 z8 I; `
set trade-record-current
) ?9 T0 H; Z: Z- T9 ~(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

" _" o: S8 `/ I/ {8 E9 f9 f% j6 m/ M]
# ]7 W2 {6 j7 H# w
* H+ ?5 ~" x$ g5 {, p5 }$ V

( @% ]$ O& j8 g* l  bset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
$ s6 K, Q, M7 }% g; E& c

) j' l+ }* X8 r, V. o  J& Eset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
* `6 i& {; z- Y0 }( {;;
将此次交易的记录加入到customertrade-record-all
( D& U( V& F  i7 T$ r8 U' p" N! M- t3 jend
9 v0 g3 U8 v+ w7 f7 C
) d$ B1 B) w' G9 k: wto update-local-reputation
# `3 b5 p, F+ @8 D! Z7 H: p3 xset [trade-record-one-len] of myself length [trade-record-one] of myself! w7 c6 r! u0 ^: M
1 C! z" x- q# T# K! c: a$ z

0 O8 Q5 D. v+ D& j0 V! d8 ^;;if [trade-record-one-len] of myself > 3

8 C; c9 T3 S. X; A0 dupdate-neighbor-total
/ L# E* V* f9 u" N/ J;;
更新邻居节点的数目,在此进行
) e0 v9 v: U+ V# u( _let i 3+ u5 V8 g" I, E4 l. a
let sum-time 0$ f; O( _. E1 i: l1 G" y3 y
while[i < [trade-record-one-len] of myself]/ c" G& ]+ a3 Q
[/ `$ C( ~) Z. F' e9 Q7 u
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
8 R  C0 L3 m2 w  U. w' U' zset i
1 y' T( X* H' l; {) X( i + 1)

0 Q5 ?+ \& ^7 \& Y1 j  s3 J6 T], w8 p* K6 M0 f6 T" X2 S4 J
let j 3
+ j0 x4 A/ p- x7 Llet sum-money 0
3 S- w2 B( w0 |/ |1 twhile[j < [trade-record-one-len] of myself]
) ?# L- t5 S7 |9 c* E[5 X( s# f# i4 J8 T9 ~. b& \: X
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)
" Y( W# y8 n4 H. L! y/ f/ `set j
& z& `7 w/ h8 O- X8 i+ w; v/ l3 F) X( j + 1)

1 m. }* v. x& L1 ]7 r- Y" []
4 S. I8 {! C9 R5 `& vlet k 3- \0 d1 `2 w9 [) y, G4 n# z
let power 0
: a' Z9 U1 C* C. D8 n6 O( n; mlet local 0
/ N/ L0 q1 f. K2 H0 g# mwhile [k <[trade-record-one-len] of myself]; T* [5 {' d% M" j' F# f
[, o6 M0 j' n) w* m3 T- K- 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)
: B+ U- V2 M& h6 x8 J  H' Mset k (k + 1)
( y- y+ E7 ^0 Q2 K- K8 G]. X( a2 h, f2 `( G. G
set [local-reputation] of myself (local)2 n  b% k( x4 L* f! `- |& o
end
, H4 K1 {: \# S8 {/ _
( b8 o4 o" o! F" Wto update-neighbor-total3 A8 K% h0 ]$ Y$ w3 ]2 j
8 }: ~' h* l3 i# p3 W
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]/ |, ]/ z  O" `6 ~
% [6 v7 H- u- L- q9 Y
5 z1 P  w- j0 _  M& j6 Y9 _  P1 }
end# h! ~) R# L) k5 X: {& q. p
. t3 Q. n+ F) C# F  K
to update-credibility-ijl , y& l; t& o: Q3 p

6 L1 U" S- q' {( v: ]4 @& 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。* x; v) l: i: |, ~! z
let l 04 q5 y( n4 {' B: @/ v5 z
while[ l < people ]. B! o5 _. U6 S! Y7 U; k
;;
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
; b( p: T1 w5 h" J[' A3 Z' j; ]% b2 R, J* |! p# d* ^
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)- d, W. X* J0 Z+ F2 T, K
if (trade-record-one-j-l-len > 3)$ y: D7 f7 R+ t# g5 z$ z  I0 W) e
[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-one4 C9 A, L9 Q$ ~4 U  B4 z
let i 3
8 p4 S, Z5 _' _+ ]let sum-time 08 M% C0 o+ E4 F
while[i < trade-record-one-len]
9 q9 D  ]1 [3 p* }[
) Z# U3 t) m3 X- q$ V4 Pset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
' ?1 p0 x5 T$ `8 F+ Pset i. O2 P6 N' E6 p+ m: H: s
( i + 1)
1 a% {/ L% A7 q8 J8 Y
]) T+ C# f! h0 H: d6 u2 C) M
let credibility-i-j-l 0, t; q; T. I% v7 c
;;i
评价(jjl的评价)3 N# v( r  _+ D
let j 3
0 `5 Y* P6 u* l, l. Rlet k 4
- ~4 c+ ~7 m& q" n! [# W0 dwhile[j < trade-record-one-len]$ g3 R0 _  N" c, [; p, f3 D
[( E4 t* `3 ?" E9 x, y- B; j( G
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3 w3 i' s' ?" {3 B+ q% i
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 y' F' J& y9 b0 w7 K; I4 J
set j. E; c, z; M6 {4 V+ k2 f
( j + 1)

5 J" y7 @1 i' _4 }0 \]
( F, _# u# u; \; G$ \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 ))
4 |* N: j3 Z& l0 G  q) ^5 L& ^# u
4 m* c3 d. M! k9 R
2 b! E* I& L6 S5 K/ N* @) n
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))/ Y$ _" f& S! G9 E9 b% Q, z9 s3 m
;;
及时更新il的评价质量的评价
% M! v6 R) C1 C* T* S% V! d0 D- [set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
5 J1 h% W- W+ ?+ q0 Zset l (l + 1)
  G  @6 L" o. w4 H& F]
5 w7 C: \; P7 Xend5 @7 N1 ~/ G4 G
! j$ U) C5 r3 e
to update-credibility-list
* g- w) X2 v+ K( P* y$ n2 slet i 0
) A4 e% H7 ~) qwhile[i < people]
% v/ a1 Y9 X7 n[0 m: A! F0 K. X4 N/ f8 Q1 y8 k
let j 0
, k$ e5 I) X. a  ?let note 0
* a/ X" q# b% O8 Glet k 0: S& \  {. v6 m
;;
计作出过评价的邻居节点的数目4 A3 t4 X$ I9 ^- Q7 a! f0 L
while[j < people]
9 {4 W0 g6 {: j1 E[
- u  o( Q0 i6 Z: qif (item j( [credibility] of turtle (i + 1)) != -1)
$ W5 f7 B7 R; ^' U$ @9 |/ a;;
判断是否给本turtle的评价质量做出过评价的节点. l/ @  E4 U" D" z! n7 E1 x# L8 Y+ U
[set note (note + item j ([credibility]of turtle (i + 1)))
/ H9 a5 {" Q$ q( e+ Q% Y;;*(exp (-(people - 2)))/(people - 2))]
/ r+ _4 z6 R: z8 d4 @1 h
set k (k + 1)+ }- d- N+ X2 a% C8 @7 `" |
]2 Q  E+ s; J3 f4 W
set j (j + 1)
0 i% C6 [. U# p. S0 _* J0 r& H]
- n8 o' a8 ]: ?" S: dset note (note *(exp (- (1 / k)))/ k). Z% }5 G) v. c, G' i
set credibility-list (replace-item i credibility-list note)
& r7 M. p" ]5 _- y3 F# n, c! ]; m5 Qset i (i + 1)4 \8 g2 O  `2 t3 D
]) y* ~9 d4 `! A
end
& O+ {* k2 A2 y/ c3 ^% n3 s( [2 r" y" b5 r( J0 N/ N
to update-global-reputation-list$ ~7 {3 s6 z* K/ T
let j 06 w5 o) x( Y0 i' W% _
while[j < people]
+ H% d2 u  k4 ~& X$ Z[
/ ?" B; N1 {( D5 c+ T2 mlet new 0
" n6 ]7 {% m% @' L% N;;
暂存新的一个全局声誉
# c0 D9 {8 `3 h. L- x% r) q! ]let i 0  a! j4 M1 ~1 W& c
let sum-money 0: p* D8 m2 X7 P+ P( y
let credibility-money 0
; n6 r! ^! l5 N. Awhile [i < people]4 }0 F* y- r) T& Z  K7 f! b* C
[
6 s1 I* f4 s$ t; f8 I& Dset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))# R6 ^0 l/ y$ U& Q
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))+ p: X3 ?6 t$ L
set i (i + 1)
: `5 e% c6 c) l: q* C; U6 A]: H& B, v5 F2 t" E4 N/ ^) f
let k 0
) A1 @6 t2 A1 ]8 Hlet new1 0) R* O+ @( H- ]8 V  y+ W
while [k < people]7 L! \, c7 R) G* b
[
' L" ?# u+ }2 x6 Nset 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)
2 U7 \* v5 L5 |3 A& R" cset k (k + 1)
- {+ a1 x5 O) J0 Q5 o* H( L3 M8 m6 @]
. [0 I% J1 a& w2 \3 Z$ R3 ^* ?set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
$ I% [* q2 q5 r% i6 k" b% Tset global-reputation-list (replace-item j global-reputation-list new)
* ^5 l; l2 `3 u; E' y. _, `set j (j + 1)
, Z: k: W; e- `; Q* _]' p5 y% Q: w8 j5 i. o9 R3 F
end
; |+ C- q5 x" Z2 I) w) T+ w, b7 P0 v8 j: d1 z7 G8 y

" T1 W, Q: a8 K' _1 f0 n, X/ n. F0 V' h3 _7 O
to get-color" }2 }* \6 s5 n2 P' v

! l/ |3 Y, Q' h+ Fset color blue
0 i" X8 b, L( n% K0 ?
end
/ C: U6 m) O( I  B2 K7 b0 U5 B9 D* {/ u2 B" \6 c7 F
to poll-class& l; t7 M, I# B* v, p
end
* Y5 H! E- h; ?" E7 R: \: o( a6 Q& I1 w- q9 s- o( u
to setup-plot1
' k5 v, @/ W, N6 B
2 e0 x- ^5 R( L" pset-current-plot "Trends-of-Local-reputation"
& |0 Z2 G8 H' m' O

- M; ?5 x9 A& @) p7 M1 k/ F: Nset-plot-x-range 0 xmax

4 \% h7 K5 ~7 D+ J6 H# v) w; R
1 w" j# |3 s+ Y0 P& k3 v, }: Zset-plot-y-range 0.0 ymax

; h7 V% z# d3 e; F6 rend3 T, K* h8 ?# ~% ]' h' @

, Q& A: E7 l8 [& eto setup-plot24 Q+ x! e. R& o
" @8 Q& U5 g+ t4 ?5 b& N" K. j$ i
set-current-plot "Trends-of-global-reputation"

3 |5 x" \$ e% K+ [/ Q. g. r7 n+ F1 d4 X% t& e
set-plot-x-range 0 xmax
" b! ~" k1 y1 R' N- i0 W

1 T6 j4 s9 }/ r9 Wset-plot-y-range 0.0 ymax
5 p4 j  n" i- d8 B
end
4 n6 n6 M6 p' B, ?) \' f  O& j
# {5 |2 M- v' e- z' m  ito setup-plot3: N) |9 B/ N$ M* ^4 ?; m

* _( a5 ]2 W4 w+ k( z+ uset-current-plot "Trends-of-credibility"
! z+ ~: S" j( p1 `

0 ^3 c. L; D# R4 Fset-plot-x-range 0 xmax

1 ^  N- s' d! v" _* W8 n0 @( H/ ?
set-plot-y-range 0.0 ymax

- Y; d$ ]9 F; [, {3 q8 ~% oend
7 \+ b0 j7 K8 X; N  B9 Q4 C% z* L9 V: Y8 q5 D( ~
to do-plots
0 f  H1 E( E1 }# |* {# ~# B+ O9 d$ |set-current-plot "Trends-of-Local-reputation"
8 }7 Y3 S  ^# z) ]: Rset-current-plot-pen "Honest service"
! p# A$ u* ]# U. d0 Iend6 O# ^* G2 c) f" f/ O$ @5 b+ p8 X

9 O" X- ?& V' M  o[ 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./ I% }/ |1 `/ A5 L$ p: b5 G

/ X- d" I2 D1 ~+ d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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