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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:
  G1 w& F) n9 Q8 y3 ?to do-business
; E0 L# u1 O+ h& h4 O' \ rt random 360
% l& v" ?* P- }4 E- C1 B fd 1
. ~8 q" k6 F; D9 u* m" H" |5 | ifelse(other turtles-here != nobody)[
4 n; U! U5 C, ^8 i   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.
* y- E+ ?+ A; S: P4 h- g   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    # w# T! g  ]0 F/ ]
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer3 W3 }" L6 G  b3 a
   set [trade-record-one-len] of self length [trade-record-one] of self
1 H& T8 _# \9 ]- I; F   set trade-record-current( list (timer) (random money-upper-limit))
' {  h% v& Z- S7 m) q, i
: q8 y  E9 f( j# C9 e问题的提示如下:5 V8 z% Z( H9 O0 t& |

! p5 }$ W( B/ Perror while turtle 50 running OF in procedure DO-BUSINESS
0 T' |. T; j" ]: W2 M  ~  called by procedure GO2 n4 q0 X7 l( y
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
/ n, Y# _& ^# N
(halted running of go)
5 B2 I2 o8 ]* ]3 |9 o7 X% _1 ?  I/ T1 y) A1 J
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( s+ k) j; K: |
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
2 K" g$ k( I: Cglobals[
& s, ^! L0 U. Kxmax* M, b; q4 k+ `4 ^2 b4 O
ymax
( P  [, g0 _% Z$ ?* E7 Uglobal-reputation-list, h) C! S) }; Q, G) @+ T# g  g% _

& t/ J0 p0 w( U, q! m8 y% w;;
每一个turtle的全局声誉都存在此LIST
/ E- D& k( \7 K) Z4 H! Zcredibility-list
& q( B4 Y( @; Q8 B# n9 c$ z. j+ ?% [;;
每一个turtle的评价可信度$ |* j) A  v: q. d- r& F
honest-service' h3 Z7 D) c4 [4 O4 d3 M, c
unhonest-service% r% R6 P7 k% i; Q
oscillation
& k8 ]% v& U' w8 }# \  e% Grand-dynamic
, \$ X$ E% q* p: y& i1 V]
8 b( x9 ?, f: _* E. U* d: F. ~7 v% n6 m+ ~3 L/ g
turtles-own[
' G6 ~& B' i- v0 u. z4 Ktrade-record-all
3 g: n9 ^# q0 v7 D1 G  d3 k;;a list of lists,
trade-record-one组成4 C9 J# D# v* b: k( F
trade-record-one
& U9 u) G# a; J$ ?. j;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
" f  X7 I( N% B! M
3 d' ?2 d: R8 b9 k. |2 x7 x;;[
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]]$ [; u: Q0 \* U! n! d2 P/ k
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]
* D( m4 R# B* {4 Z* Tcredibility-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list5 X1 r9 t' o$ `! C
neighbor-total4 V5 Z2 Q8 M0 A+ T
;;
记录该turtle的邻居节点的数目( ?2 g2 X! S8 J' z, x4 g
trade-time
! ?5 l$ l$ d" q- p;;
当前发生交易的turtle的交易时间
0 E; o/ i0 u1 s& S$ [& mappraise-give
, B, F5 W: @! K, T6 J0 s$ b;;
当前发生交易时给出的评价
+ C6 c- T6 v( K6 `. Eappraise-receive& F" ?* h) i1 G, u
;;
当前发生交易时收到的评价4 f0 ]6 C9 F, i# a; x* T  r4 B( i
appraise-time+ b- z% u* M" o3 t" ]3 M! q6 ?
;;
当前发生交易时的评价时间
9 N# e  e" l8 L$ j' y# rlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
( l5 h2 ^( i6 p5 Y/ ]9 ^trade-times-total
9 e( O# \2 ~' g) l: G! B' b;;
与当前turtle的交易总次数8 i7 }5 s5 b' o# O" T  ]
trade-money-total
5 D& {4 M! a: ^/ s# R/ p2 M* Q;;
与当前turtle的交易总金额" o  R; X. X" W) X1 L
local-reputation% y8 V( h, O( B3 \" M
global-reputation
! O9 t- R- a" H. L; ]4 o4 k4 Zcredibility- c1 j+ K3 L/ b5 ?' R. \
;;
评价可信度,每次交易后都需要更新- m1 P: T( v4 k: P5 B
credibility-all
1 j/ f$ S* y7 j* 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
* T: z* Q- Z" q+ u3 l- N7 ?; T. X4 j& c
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5) R) ?% V% e5 ~& T& ^- f
credibility-one
+ |6 K2 n) n/ M/ E& j+ e0 E0 w1 J;;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
: A1 s+ W$ P$ s/ `( H% M# Gglobal-proportion* A: b! Y- y4 E, y$ A
customer
0 Y, v% g' F3 e) u) |customer-no, u: |. e! S; k1 v" n( X6 q5 l
trust-ok" I: H0 c" ^+ J+ D$ ^, H* C
trade-record-one-len;;trade-record-one的长度4 |+ B5 I; F5 L8 w$ v
]9 j5 p; U6 b' T6 B$ E! L! W
3 \2 }. r* T% {
;;setup procedure9 |- x3 {  t/ K2 z  \6 T0 y

* I4 ^2 t6 D- B4 |5 A  Pto setup
3 ~" F" V; P4 {2 ?
8 E" i* l2 J- m- {( ]3 `- g. @ca
  b! L2 I% x8 S+ b

: x4 G8 |9 y; x) Z. ^& zinitialize-settings
) N  x7 A* F: U6 U
: I  w5 D: c$ b
crt people [setup-turtles]
& M1 b7 P0 v& g' q- ]

+ g7 m! x" k* F  u1 V( R" preset-timer

4 }5 S7 A, i" E: S5 A
% r# t; Z3 u& Z5 Q: }& A4 upoll-class
' H, @! Q( `3 a7 ^" A: h+ V* |: B, `4 `
! s0 G. i( m1 e  q" |
setup-plots

; A& M3 _5 M0 \# M6 ^7 z; k  Y  W
do-plots
$ [9 N  J' ?5 T6 y
end( j+ W9 q* \5 R" T

6 x- l/ p5 E5 B) P8 s% _2 tto initialize-settings
. j( m4 ]! w/ X% y* j2 N- Y7 P8 H% v# c# Q6 T: X1 H
set global-reputation-list []
5 C4 k/ U: H; ^, v5 B, u; m- \7 `
, N. T7 y& c5 {% ^
set credibility-list n-values people [0.5]

5 A9 Q& y0 f9 C) P8 v- D
& W7 K' Y. s! d7 dset honest-service 0

# H# m0 w4 K& ]; B
$ a$ \5 y2 I- `5 h# Q+ j2 q# \set unhonest-service 0
6 p, o% |. k+ ~/ e  A5 `: u, t
+ t0 O5 d  @' ~6 U1 ]0 ?0 t
set oscillation 0

& w  ~) b  ~& a' T0 `  ^( a: N& K0 v6 T/ z  \
set rand-dynamic 0
# a% @7 X8 g2 D
end2 i  P8 Y4 s5 p, I) f7 k2 q0 t" u

9 ^3 g: V) s9 ?to setup-turtles
) n5 O+ P1 V; y) D" C0 h- l1 ?6 }set shape "person"0 M. d* Z& p8 w
setxy random-xcor random-ycor0 y3 |& W: Q$ f+ S
set trade-record-one []
0 l9 `2 U: e& C- e3 n& y% K
8 M6 q$ d1 ]* Q7 U* r8 O
set trade-record-all n-values people [(list (? + 1) 0 0)]
9 m/ m8 {& b0 u" O/ \/ @. o
3 a2 d. e/ Z  l% ^* _
set trade-record-current []
6 b$ a) C! i4 G8 u3 x1 K" k/ tset credibility-receive []
/ X/ _1 T) j% {2 N* Oset local-reputation 0.5" N( f0 G+ M6 _# T
set neighbor-total 0
( y, b; X% z9 h, m4 B# P+ e) ]& hset trade-times-total 0
# i9 S0 X0 E, }- U( e+ C+ ?set trade-money-total 0/ C' W( B* m1 x. S/ N0 k( r
set customer nobody
; A# N  Q7 c# L2 [; s' Z/ w& |set credibility-all n-values people [creat-credibility]
4 x9 }; d& ?* ^: Mset credibility n-values people [-1]( @" }3 f7 @. z7 q8 j2 N
get-color0 [" \1 Z6 i5 B, N6 [8 f2 ^

! W( X( t2 ~2 \end
, m0 k8 j* ~# |0 O
' L* T- t% J( \& wto-report creat-credibility6 ^, b9 b* L: N, R3 F
report n-values people [0.5], J! J. C0 X  g5 M% j% _# y
end2 Y% D. _* W: \: J9 m
3 D7 U' V+ r2 L% E& B
to setup-plots
! u4 Y+ l$ _9 Y+ g7 U+ W! f" }& I: K( m* `' M
set xmax 30
# q# d3 U' T: t$ L* J2 w
# f0 t1 B1 M& ]+ n5 [' F. P
set ymax 1.0

/ Y. J9 X% }# k/ v) c' d% ]8 u9 ~% o2 K' F
clear-all-plots

+ m! N- S0 z5 W. F8 i
( G) M0 e. _3 N  ^setup-plot1

; [* M& @% h7 r3 v
4 X- b  ?7 h6 v) @+ [9 r$ }; B- Vsetup-plot2

( i$ |7 g! E5 {# m3 t4 _5 I+ G2 A9 W8 s& y
setup-plot3
4 s  b4 r0 e+ |) l: ^3 j
end9 G8 {- D" ]) }. b' j3 \
& B* F- k7 \9 U; P% R( z
;;run time procedures1 q2 X7 i6 h- a( r; ^2 A

' d" T- O1 j/ k& Uto go9 I+ T( y2 |" c* Z: x2 P" C  _

  k$ r. Q* b+ P/ g3 Oask turtles [do-business]
( b; m' R' P. S. E$ e
end% W( \# I7 S* x* e- ]
. ]+ p2 z( \4 X/ m' d6 Y7 B
to do-business 3 A5 F0 _1 p6 Q

* ]4 S& I% o3 R& f* h7 B# z! `: {* z4 `) c& l( c  Q
rt random 360
% l$ o$ {0 m( b' ?

" v$ e: e$ h3 e. C( W" sfd 1
# f! W' J" v* ^
! i( h, l6 e9 w
ifelse(other turtles-here != nobody)[

) \1 c0 ]4 W; x
+ r$ ~$ q4 R) Q9 H& Gset customer one-of other turtles-here

  W# G+ V1 E) C7 ~5 {
+ U$ H8 r0 E/ O- D8 b# `0 C" |;; set [customer] of customer myself
; c& K3 n+ G- O# |) _' r
% T3 C. u6 T6 ^2 B, e. R
set [trade-record-one] of self item (([who] of customer) - 1)5 k, u% |' d* _, I; @. ?
[trade-record-all]of self) t% O& R6 A& v9 z. s& A; U6 {
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

7 J$ _, _+ a) Q! a6 `3 ~
" N0 Z# Y& k- cset [trade-record-one] of customer item (([who] of self) - 1)
5 K) m. f- @) A1 w8 n6 _% H[trade-record-all]of customer

: o& @: o5 \; S: |
  g6 x0 j  H( Q4 B3 cset [trade-record-one-len] of self length [trade-record-one] of self

2 T9 ]9 g% h  @& G& U7 X. V5 N
set trade-record-current( list (timer) (random money-upper-limit))
6 p8 H" w$ S& K% M

- G' p) _8 x" mask self [do-trust]
; E, @9 Q: W* i3 G1 y;;
先求ij的信任度6 e9 v. f0 g1 X2 b" A

# @4 W0 Z# s- `) C5 gif ([trust-ok] of self)
; J, C$ X7 H' Z- o;;
根据ij的信任度来决定是否与j进行交易[
; l5 @) a. e/ h0 V8 p8 w& X0 H1 Pask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
! g  k/ v& {+ y0 j8 `- Y0 H/ ~* N+ ^! U
[

+ l6 B4 x% l- x5 J5 o+ W
0 Y# F4 a' l) b# J4 {8 Sdo-trade

6 |$ N: I7 g4 p: t
3 [. z1 F7 }! i. Vupdate-credibility-ijl

0 Z$ ~0 M4 |9 ^# u
6 V! y& n& R) _* C2 J) Zupdate-credibility-list( M# M3 J3 E" N/ w
# n1 ^4 g6 ~9 r" \- r

% v8 E# U/ k$ y% Qupdate-global-reputation-list
3 S3 a- {$ Q$ |. R3 M
* x) Q2 a) j2 h1 o2 g% Q
poll-class

( O! v& K/ N) n7 E9 U* F/ N3 N  M1 F7 g1 L) h
get-color

: W* N& L$ E- v2 \( Y" J/ Q' x( R
( x2 s, h6 g- p]]
4 G, @! T8 G8 w: ]: `, Z: o" F# {! {4 F+ O/ R
;;
如果所得的信任度满足条件,则进行交易# @( Z3 ]) Z6 r
8 a: o' c) z) M: U2 r; J- E1 s
[

0 W( s4 |3 ~' Q: T
% T: J/ ^9 `" w6 y( Hrt random 360

* F% B( I; n. c0 _. M6 k& L# G6 i) O' @  H
fd 1

  C8 T8 }' }# [( J, V, d3 z# b$ h* T/ s
]
/ J4 ^2 }8 u; p$ f" K/ M6 a
8 ~0 X9 R# D1 z% _2 M& c
end
5 U5 E! z* q+ I
+ W" M) ^- e( Y/ }* M; H
to do-trust 4 f! g9 j5 A& E$ F, d
set trust-ok False
2 |6 e( f7 E7 P9 D( B5 ~  v, F5 N) R: h6 z1 E. G

3 e0 x8 a9 i( i; P$ d& w% R; alet max-trade-times 0
  ~# X+ s! D! s9 D5 n/ o  |foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]% b# g9 d' }' [( u; Y* P- b
let max-trade-money 0# M$ k1 E; ]/ E0 ]* g; U" H( E
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
& [2 |, t- r$ f5 [8 i1 c9 W6 mlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
$ V6 G" S: i* h3 N4 ?
( T8 T" h7 C3 i& a8 n# o, g

8 _. n' S% X" O: c' D* }* Eget-global-proportion0 s! r. O& L# h0 F; ?% S
let trust-value8 T$ k! o8 H" Y6 }: M" F; c5 Y$ }
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)
4 @# R. O" w/ a/ {: H/ y$ @
if(trust-value > trade-trust-value)2 C4 Y  U# n  x0 V4 h# L
[set trust-ok true]) `# j. r5 q( k% U
end" o. U% @9 c; J  S+ o9 E6 i! F& q

* Z+ I/ Z( a1 J. h, N; ]# ?to get-global-proportion
6 L3 z. A. m+ g: h$ A# F% {ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
8 }0 {2 a* k. k! s( H[set global-proportion 0]. S4 @7 _( l, }8 r, I+ A6 z
[let i 0( v. a/ w! n. t8 q
let sum-money 0
$ w# Y' G: x# twhile[ i < people]
2 Y4 \1 J5 f' F, b: C3 C0 l% a[
/ L6 f& r  j/ k' {: k1 y" Q+ }if( length (item i
3 y: ?* S* l4 x! B6 |[trade-record-all] of customer) > 3 )

4 l  @- S7 B9 T! K[$ n" E% D# Y. \) k0 Y
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
5 J2 d) `8 n% g) p]. \( l7 L4 Y% x! B% K
]6 A( @6 e/ Y" Q0 Q
let j 0
2 V$ o( i+ Y! mlet note 0! x; ^0 p5 s( p+ K& R
while[ j < people]
" u$ \: n2 _1 `% {  n6 {5 g1 R[
, p9 S- L2 F2 p  r4 W6 M7 ^5 tif( length (item i
6 S# n% z& a9 [[trade-record-all] of customer) > 3 )
- Z, c: s- C$ l. {& e$ Q. i
[0 l6 d+ f  a5 y  i% Y3 F
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
" j3 e* k6 J$ |0 D- f[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]; @) e; g0 d/ R# A0 r
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]' w, K( V: a& e, T$ J& v$ `/ M
]8 [9 {5 |0 t8 i+ [& M
]$ d0 l8 b8 s' f4 l7 V( u( X. V1 \7 p$ ?5 f
set global-proportion note- ]3 Y" z$ ~4 v- u' ]
]
. g( a, L- W" t( ~9 |" c  g7 Mend8 ?. z" l5 L* h6 ~8 w' J

. I+ f& U7 [! Y/ Y1 k( ]to do-trade
' k& j6 |/ X7 K. V: @, f0 P;;
这个过程实际上是给双方作出评价的过程7 C: h% i( ]$ G4 A, a2 A4 P: L
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价) v) A5 `& D2 N( j. v% i
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
8 f& l$ F/ J: Yset trade-record-current lput(timer) trade-record-current
  C. Q; ^, l5 B8 |" F;;
评价时间" [5 N9 |. I) K# c
ask myself [
7 q( D, C; Z8 a9 U* aupdate-local-reputation  z3 o( ]4 D! |, t+ E; D
set trade-record-current lput([local-reputation] of myself) trade-record-current. ]# Q+ ^4 C) T
], Q) |  R" I4 Z" n! P; A: \1 z
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
. R0 b! y5 i- c5 t;;
将此次交易的记录加入到trade-record-one6 I6 Q6 ?) q, @9 q5 C+ @
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
# g$ x9 A3 v* G6 ^let note (item 2 trade-record-current )
, h3 e  V/ w% u: U% h1 X+ Hset trade-record-current
1 G+ ]6 @6 Z7 |0 X/ }(replace-item 2 trade-record-current (item 3 trade-record-current))
( A- h3 t3 d# V
set trade-record-current/ |6 d5 S% y/ X9 l' l7 E
(replace-item 3 trade-record-current note)
( \# L/ V+ l% H5 R
; B* X7 n$ C0 r) D0 q

0 ?# j1 S7 b5 task customer [. Q  ~& e  J3 ]" k. L- N
update-local-reputation+ @2 g& ^5 G; g' S, r6 s3 l1 @! d
set trade-record-current% L* a/ W9 `) W2 |3 v
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
+ ^  t. i  Z: p9 }. W* w9 f
]0 \) D# @0 C6 P' i4 J" }$ g6 ~
2 g. }) ]0 `7 ~( \& o# b

# ^6 J; w' c  }0 f: S) L- P3 t5 }set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer" \: G7 W4 D4 A7 r- e- Y

; P0 V8 e& z: y! b* ~$ w- ^+ Mset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))/ k$ i  a  A3 |7 \# A; J
;;
将此次交易的记录加入到customertrade-record-all/ ^' ~/ t( X- N# a
end
/ @' R8 V( ^* ^: u3 F3 b3 Y- T) Y6 k6 y
to update-local-reputation  g4 E3 _/ s  t/ d; P( e
set [trade-record-one-len] of myself length [trade-record-one] of myself
* E" Q/ I7 c! [2 [* f2 R
$ Q& l% J# Z. X
7 m6 w& s/ `0 U" v/ @, k! C;;if [trade-record-one-len] of myself > 3

, x5 A, A' |# p, w0 Dupdate-neighbor-total+ O2 V1 \) U6 V: g9 g7 L
;;
更新邻居节点的数目,在此进行
3 H: k0 Y  T* O' \8 c! m* Y" glet i 3
9 \; k1 }/ G- vlet sum-time 03 B& v$ {/ N5 d1 [3 I" o" l" q4 Q
while[i < [trade-record-one-len] of myself]
: r; N& c+ M$ T+ ^[
! {4 H! i1 k% r! a. N5 n  U! xset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
9 |8 n; h* D, m) }: O& G! n& Vset i
" r- M1 A2 S; t9 X, ]  l! s% \5 [& C( i + 1)
' I5 y6 t7 n7 k0 ~4 ], s, p! d2 [9 q8 v
]
- G: U6 d5 Z7 blet j 3, S% \- l# Y5 Z
let sum-money 0
2 F7 Z3 n# ~+ Q' p' i( |6 xwhile[j < [trade-record-one-len] of myself]& K: B& L3 |4 z# |; Q
[
; Q: p9 e$ S6 Sset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)( d. R$ Z: o- _" H5 i, E( z: ]
set j+ ^" y. L6 {+ h0 q. B" d- {, s. L
( j + 1)
4 l$ d0 ]0 c- X' P) ?$ X
]
5 p$ K6 z6 D! H1 e2 P# c: flet k 3, t, A  e6 n+ |. E9 z8 t1 k( G1 r
let power 0. H; E9 m7 @3 L* g# X5 O3 E) q
let local 0
) ~' N! U+ L& U0 j* Qwhile [k <[trade-record-one-len] of myself]
, O# `+ I: O6 s[# o' U! ^+ B3 S$ \$ }
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) ! j9 {: K6 W% F/ z
set k (k + 1)
/ @8 Q7 q8 t- x  ?]3 V* E+ y8 T2 o0 a
set [local-reputation] of myself (local)4 ]' ?3 c) z) M* e, T8 ?" E7 Z
end8 c2 z0 }' \- W8 g  }/ L  L3 P. W

7 _! Z9 d, i: q# R: p; Oto update-neighbor-total
# H: ]2 A9 a1 J4 k! u+ Z% k+ U  V% n( Z
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
; o& ~1 \5 f: e7 g3 g/ Q6 {
$ j* y' l! s4 E9 I1 Q4 v! A

" y6 b/ `$ G& o. a8 }# jend
  B9 o: C. a7 o( [" q
3 Y9 f) K, A* i1 y3 V1 s5 ito update-credibility-ijl
" E. j( K) D- E; n  q# X1 S( Y2 U- ^; W& o: j# m: z
;;
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  p. e$ C0 S; F2 o8 ^: j
let l 0
+ P% I' c' i' _( C! hwhile[ l < people ]
/ n  `# ]- L2 ^;;
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
( {% q% W# v6 I3 K" |[
4 a* a5 T" w+ rlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
$ p' M2 q3 D) V& F9 I4 |' }if (trade-record-one-j-l-len > 3)8 W/ {0 X4 A7 N9 d% S
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
" u& y1 |- K* p: Elet i 3. @+ g/ C2 t: M$ r( |, H$ v* S& M
let sum-time 0  c3 L5 g5 j# Y8 t& r* ~
while[i < trade-record-one-len]+ b, x+ }$ n4 v( C0 z- Y* N
[1 t4 b+ E; j; {- o0 q2 B! x
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ); ?; L3 |& t& q% J$ [! K
set i& Q+ t( a) N8 w- X2 R0 S; Z8 t+ `
( i + 1)
2 o' o; q' t: z! i2 G6 t
]9 N! C" N) U( M% ~) a, [
let credibility-i-j-l 00 }3 T' |5 w+ _0 B8 ~, M' C
;;i
评价(jjl的评价)
- T: n' a1 z' C! C3 w3 s% Ylet j 30 ^* [3 e5 `) l4 f- z, V( G
let k 4
$ o) s" [) ~2 }! d" X5 V8 Rwhile[j < trade-record-one-len]
; ]3 U3 x8 @! n# g( d% Q$ u[
  [/ k$ N: w7 [+ Wwhile [((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* g9 D8 L. I/ ^' B3 ]: L" |
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)5 p: n. \& D8 L( u  o& P
set j
/ D+ x6 P$ |$ q( U' r+ I( j + 1)

6 @/ T- W' E, k/ A5 f]
7 K# b% z" U4 A- j0 }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 ))
9 g& z7 s, a) w0 [: [+ p5 G
5 s: R# I, E6 @; j) g

( n/ B/ a8 p; l/ t5 b) {0 Mlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))/ C# a/ V, g2 H/ y/ R
;;
及时更新il的评价质量的评价
8 C, x4 H' n& x( W2 Q$ aset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]# Q3 v0 j5 l" {& M% k2 F
set l (l + 1)
' q8 s+ X& r% U' |( H" ^]( g$ h7 J, H. l+ T6 b& S
end5 z( J* d! b, S% y3 V0 A

! F. s% F- J. B+ e; Qto update-credibility-list# G. \) @* z- Q6 m8 N9 Z
let i 0! C7 p% c+ ]- {  U5 E4 n/ k/ u1 w
while[i < people]
5 A% w4 L+ `8 i[
, q6 s- a  q6 v. d1 J$ `4 G( P. Wlet j 0$ f) a  _9 x% Y# g$ u
let note 0
! v  C+ X2 ~0 p1 S9 _: {2 X- L) Q, plet k 06 ?" X# W! T4 O$ O2 }
;;
计作出过评价的邻居节点的数目
  @: Y6 Y3 M% [) @( q: ^% h. F3 rwhile[j < people]
  G2 }$ d! E5 c* q8 O. ]. n2 ?[
- C8 @  H+ r. _0 uif (item j( [credibility] of turtle (i + 1)) != -1)
+ P4 d" A) Y" M/ L;;
判断是否给本turtle的评价质量做出过评价的节点$ p8 ?' Z- i9 r8 |
[set note (note + item j ([credibility]of turtle (i + 1)))- }- ?! k) R  D3 \
;;*(exp (-(people - 2)))/(people - 2))]

" y1 L6 x5 T3 E; c6 c, _set k (k + 1): j' u4 F$ ]- v4 Y5 F/ `1 P
]
' `3 G) Z, U! J- t, Iset j (j + 1)
* h5 g: s5 q. l( H  b* w]
# `' E. I' S, s* L8 fset note (note *(exp (- (1 / k)))/ k)) P9 u6 t' T/ K1 t  n  k1 v
set credibility-list (replace-item i credibility-list note)
( }$ w+ f4 j% ~set i (i + 1)* y* B/ q8 l7 W8 F4 B
]
; m& l: g8 c, J8 W$ m  h5 vend
# P7 h8 D6 X$ M& T, g
7 {8 ?7 ?+ D! u2 f% ~to update-global-reputation-list. @  S$ E: R9 q8 D$ i% E
let j 0
7 i' ]  R9 o5 y2 z. ~while[j < people]7 a- G7 _5 }7 e# ?- J
[% X" \' d9 P- Q9 k3 K! y4 Q, B
let new 0
* P# U( U/ R6 B' N# j3 @% r;;
暂存新的一个全局声誉
# D; _2 z4 F0 K; R+ J# Vlet i 0) W1 Q& g9 H0 ^' I
let sum-money 0
$ a3 ?! ?2 O7 a0 M) s# b% Dlet credibility-money 0  r( U0 K( @8 [3 v6 H* _
while [i < people]
! }$ K( e8 u1 K5 T[
( B. z. J: a( z4 X. v/ wset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
; U' v. A8 V1 X9 tset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& E% y: f1 E! m  |+ |9 bset i (i + 1)6 v  l8 c0 J- e' a9 |  |
]
8 I1 U8 ^1 `* Z  ]( ~4 |9 I" ]let k 0
- M( ]$ K. n! ~! ^' U+ Elet new1 0; o- I& y" o% c, H6 U& K" z$ T4 z
while [k < people]$ x3 z! u3 w/ ]
[# X  |8 t" H1 X6 J
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)9 U3 y! I$ h3 k  D% R! G1 T
set k (k + 1)
1 t2 Y. x7 w2 D]
1 Q6 _: X$ `2 d' Aset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) : g/ u& A8 E5 z8 H6 o8 Q
set global-reputation-list (replace-item j global-reputation-list new)
/ M2 ?0 ?' L" C5 Kset j (j + 1). M7 F8 Z- t3 V! a2 Q" H% r
]
' z0 K; ~" Q' N) ^7 Dend
3 M& x, {+ m7 p. P& j1 P5 Z( M  \% w

9 U* y8 J( u- \- T( |2 Y+ i& Y! c
1 r1 D" O) E( ato get-color
3 C" E( c* E. |+ I/ b* c
* Y" D- s4 X; v2 }set color blue
; U! Q+ Q# H. f4 c3 q# t2 g
end
: ?0 O  g4 U" G/ f. [( h
& @" f$ \+ w: _3 m- T! y, eto poll-class
+ m8 c" f3 j9 y, Z( @$ R9 `end
1 f" Z) g5 b5 k
, l% P+ M/ _7 Q+ Zto setup-plot1
# u- r: r8 T! L: w4 L8 {# n+ t! g! \5 G
set-current-plot "Trends-of-Local-reputation"

/ b# x( _2 ?* ]0 n
8 H" o3 g2 v3 Yset-plot-x-range 0 xmax

* `% _$ `4 S2 @4 u" X4 [
9 I. U8 [; F! k! u. i, e/ Bset-plot-y-range 0.0 ymax
7 f# m. b3 x, N! O: a) Y& }# ?0 V; y
end, i: z! M- r& u3 V" M

2 G) _" |# n# t4 Lto setup-plot2' _/ D: c0 F! `! V7 }

  E1 p! D* F3 C  u, xset-current-plot "Trends-of-global-reputation"

0 Z0 M' k& y. U6 Q* p, u+ L) q8 J' `* Y) Q% K
set-plot-x-range 0 xmax

4 }& \' y# y( t* n* b. v8 j6 i7 L0 }
set-plot-y-range 0.0 ymax

$ _; x4 B+ e3 O( c* x* D# _+ }. i7 oend
; c( e, B# `- \- d6 {7 Y- e0 T+ W3 R( d
to setup-plot37 U1 z) s) N( {6 J5 |9 c$ F* g, ?

, s" g4 v8 B( @set-current-plot "Trends-of-credibility"
- N" S1 J- c" I# r( B7 a* J
0 h5 }4 W/ Y- P* _9 Y; A
set-plot-x-range 0 xmax
" P7 d- i$ q, g7 r( f

4 [% M6 q. H2 R% F0 u+ [set-plot-y-range 0.0 ymax

  u, P+ I, {/ `8 [* S8 B+ Zend
1 i$ Y* X; y1 x8 o; n1 x( G1 z% a8 W1 c  y" p
to do-plots! E8 g. b3 L9 W3 o3 `# c
set-current-plot "Trends-of-Local-reputation"1 K2 Y, l* B: n, K7 s
set-current-plot-pen "Honest service"8 x* y4 O9 H. O8 f  v+ S; X1 y
end
1 T+ c: M- m2 x" G9 ~; K9 ?" X- ]4 z: @
[ 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.7 r" i  z9 C, H
/ `9 F8 [/ M: `, ^% ]6 B! [8 b+ L
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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