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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:+ M+ h- {9 n' F4 ~
to do-business 5 v# x) \4 ?4 k4 t
rt random 360: A2 R% {7 \, r: ]. g$ x7 d
fd 1
, a4 j0 g+ ]+ M9 k ifelse(other turtles-here != nobody)[
& {7 \6 R% L* O; _( ~   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.8 S3 Q% p2 q5 \) Y; U* _+ j
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ' h* C+ \6 k2 J( b( T/ F
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
3 {6 g* [' f, K" q- Q   set [trade-record-one-len] of self length [trade-record-one] of self
7 Q9 U# t4 u+ l   set trade-record-current( list (timer) (random money-upper-limit))
6 x5 a. v0 w, x; h0 o0 _1 Z8 Z% G3 ]% j' P3 C
问题的提示如下:9 ~' A' j/ w! ^# y/ D
, J: ^# V. z4 ^  O" e
error while turtle 50 running OF in procedure DO-BUSINESS
- x+ v1 `* ]7 u0 [  called by procedure GO
8 L* X9 m% L! M4 dOF expected input to be a turtle agentset or turtle but got NOBODY instead.
9 R9 P, |. t% X$ G% @
(halted running of go)! z8 ^$ I5 u7 J: ^* M  a
: Y# Y/ k' [) d. s% n! Z
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~~9 s2 \- v) S  s3 D0 y
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
5 E5 ~3 V- U" a1 N* ^$ A8 aglobals[
5 ~' Q# W) D  v1 r5 Y% {5 `5 Gxmax; ^9 w& E' f& j
ymax
1 c& }$ C& g1 K% U; wglobal-reputation-list- |2 [8 w. `! U) t! d7 A" Z

) I. m8 X9 }! M6 C' D. r- c$ s;;
每一个turtle的全局声誉都存在此LIST
4 Y/ g3 B- L$ c2 V8 M6 U% Wcredibility-list% k6 R  `3 n% g. L9 d6 f
;;
每一个turtle的评价可信度$ b/ l% k6 R  G) d& c% x+ H
honest-service
* |% E: s3 t- q/ a6 N5 r; Z# funhonest-service5 ?( W& I$ v; ~7 T  x
oscillation* q( Q5 _, b/ Q
rand-dynamic8 e# h+ t+ D! ~* p" ~7 a
]
4 s- K* ~% F! @& A9 _
: z0 a: i% i) Uturtles-own[  I6 a% v# F+ `" O
trade-record-all
' c) Y; l' ?$ Q% b0 N% L;;a list of lists,
trade-record-one组成( f, j4 Y9 ]% B" L9 @3 G
trade-record-one- y/ i$ l; R( F
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录0 F! r% ^# Q7 K: V9 s* w

+ Y; i0 `0 f! ?, k;;[
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]]
; }1 k2 @. @+ s; h8 rtrade-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]
0 J- Q$ `# y! mcredibility-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) w4 j! ?0 B  L& `4 N
neighbor-total( Y$ h3 T- T+ F& Q6 G
;;
记录该turtle的邻居节点的数目  ], |' G7 `5 p1 N* U
trade-time
  X1 t4 @8 x+ ~* W, w; K5 o. q;;
当前发生交易的turtle的交易时间/ T* O$ a# t) |3 O1 H5 R
appraise-give
, N( K% N! {5 Z/ t;;
当前发生交易时给出的评价0 D. x* |+ r2 l5 z0 @( h- m
appraise-receive
% P1 I+ {$ S5 G+ N# z) h# _  W6 c;;
当前发生交易时收到的评价4 ?# @! ^. t, R+ g$ z6 l$ u$ ?
appraise-time
' X# C, g9 I0 T% |! J+ z3 ^;;
当前发生交易时的评价时间/ a. W1 J, `) x; s# g& J, h
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
+ |4 a& Y7 _. n2 q0 otrade-times-total, i4 o( i# c9 c
;;
与当前turtle的交易总次数8 i6 M- m' b* b$ j$ q" t
trade-money-total
& S7 `4 ~- |' z% e: z;;
与当前turtle的交易总金额
( O8 Z7 ]* G6 D2 w# q& T8 clocal-reputation
# E" c5 B, q0 M0 Q: b" `- }global-reputation
6 w$ W) O* _' A, ?credibility" {1 E/ F, I! p
;;
评价可信度,每次交易后都需要更新" n3 ~. ]7 Z* S) V( F" w$ a- s4 Q- ^
credibility-all
0 F+ T) m- F" z;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据+ c1 [2 y8 I9 ?$ Z

. A0 b" F* N1 e& ^0 X, I;;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. ^+ Z$ k2 z! O8 A& T9 Z7 U" i% S3 }
credibility-one
8 g! d7 K( D0 ]+ [/ A;;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
( l! {8 Y5 h$ M+ Hglobal-proportion
2 j4 q9 N; B; qcustomer7 C5 f* H9 I0 W
customer-no! N+ ?# q4 W- ]7 a6 T4 k$ a
trust-ok% f/ B. p: X) E  R  |5 `9 Z
trade-record-one-len;;trade-record-one的长度0 d( E0 f* l% r  V, C: ^2 P
]5 V! K6 d: d- S- X9 S) q
% I6 z( D. }' m' H$ W7 ^* {- X
;;setup procedure
) X. i, k# S7 Z5 U
. b. e5 t# |4 E$ f8 Q0 lto setup
% R8 X) U  Z  V2 w: [0 I* w
6 {; _* C6 B, U% dca
2 h3 G- E9 Q' {" B8 A
+ w. Y# \( L' r% c1 Q: R: e
initialize-settings
  O, N% u( ~. e5 @. y" j5 R* Q

! e1 [& z' h! G! {. Q/ ucrt people [setup-turtles]
1 q- a- |# t7 i% \* v5 z0 Z

) m& F0 a! a+ C. dreset-timer
( P+ Y  {& z& z# [2 J

5 d5 \% `! v. m) h5 u0 upoll-class
+ A4 S$ ^  I9 M- C0 O- K
+ r( j  H0 B4 k1 V
setup-plots

* {7 \; T+ e5 K" B# a0 R0 j/ y% k$ r# }7 f( A( G
do-plots
8 w# K) n# K1 E: X5 Q& b0 G
end: W* t# x. r$ U- R9 z+ M

* p6 u- a( H' v: k( L: fto initialize-settings7 x% D9 f1 ~2 v* u# e, T( }
2 a& d1 ^/ c7 @7 m% G# @2 v- q
set global-reputation-list []
- v- [- G2 t/ L# c- x
3 }2 Q. a$ L! [" ^9 g5 |
set credibility-list n-values people [0.5]
3 O% ?% z5 l, U, @" j( A

: s1 D8 Z5 |6 w1 l. m" M0 q2 vset honest-service 0

, P! {5 r6 X3 t8 L* L5 h& R! B6 P) N! \0 X' a* M, o
set unhonest-service 0

) u; W& E1 D" Z/ u  b# n+ T  ^& f5 N. W7 {; z4 P: k, k
set oscillation 0
  v7 }* j" s+ h+ ^

2 ~+ I3 C: `2 z, qset rand-dynamic 0
7 q- R* C& A( v9 l) ?6 ~
end+ n/ H3 V: t+ d7 I
! d- h+ J5 M; k# b" S
to setup-turtles ! V- X) b* V4 o0 v
set shape "person"
% Z% l5 K9 b* b: D2 h; bsetxy random-xcor random-ycor
. U9 D- v$ N# G1 w1 O* q1 m8 ?. i' _: Dset trade-record-one []
" I( z5 ?4 @  {$ }" ^, ~

7 I1 _! }( \# z, u; U8 ]  tset trade-record-all n-values people [(list (? + 1) 0 0)] & l1 c, @: ?5 r# y' Y

. L7 n/ s! d; a  [) Cset trade-record-current []& i' ]! |2 ~4 |# s
set credibility-receive []  h) G9 ^7 o2 J: O
set local-reputation 0.5
1 q# r* w* I) l+ iset neighbor-total 0
4 y5 _7 n! d) d. w7 k+ pset trade-times-total 0
0 q4 I' ]# @1 e8 [" X- n' z3 i3 Qset trade-money-total 0
1 Q, y  A* B' L- K( u- A8 rset customer nobody0 L2 w- y" J) V
set credibility-all n-values people [creat-credibility]
9 G7 m1 b8 n8 K" Wset credibility n-values people [-1]
9 y9 [* N+ p1 ?3 ^% ^8 F( mget-color
9 w7 T% f/ C% w4 X* A6 }- M

  H1 ]/ |, T4 K, Q* qend2 r0 v' L" j& h# a; Z3 B" N

, m* n: p2 o. B6 k, B: dto-report creat-credibility
  q1 n# a  h5 r) C7 w( g. {# B- Qreport n-values people [0.5]
7 V" Z  e6 U1 ~! D% G9 K, h+ _1 tend6 V. \# G1 P% I
$ U2 G9 V) d6 p" @! Y+ r
to setup-plots
2 S; W# r- w5 r# w6 P5 d6 `3 m9 O
+ ]8 L  ~+ S" X: fset xmax 30

* M2 |* J, F4 [' C, G2 M* a' y7 O6 ]# L- K/ i3 J
set ymax 1.0
- z2 f, s& U- \  d
5 ?* f" p$ Q* p, X8 i* f8 T. @
clear-all-plots
, B  F- a7 ~5 y9 ?
0 l! v  ^: o: X
setup-plot1
( n0 r9 E) V/ k. i/ _

! W% M- E5 b8 ^  k0 p8 Zsetup-plot2

3 @) h$ E( h  F- X3 S; {9 \  l, p' o) ^
setup-plot3

2 s4 Y- D2 z6 O; oend
8 _% K+ H# _$ h& m# v' ?% `- p9 T8 l) v8 G+ m8 p8 e  i
;;run time procedures
9 a0 `! J8 G1 R- s$ r& |+ ^
- I% W1 v0 o0 q6 ?, q$ lto go: ]4 L9 t; z2 z, O, _. U

; ~8 T( `- a. Wask turtles [do-business]

* y  h1 B1 w! W, {7 mend# r: r* Q3 I7 v  K+ e& K! H
, ]! f7 F# T2 A& Q6 V
to do-business
" R5 k6 X3 _  N+ [: H
* q2 k# Z/ m9 U$ |

! S! k- k5 E. A6 R; |2 |rt random 360
  N( M# w! {. v7 i0 R; I
2 Z9 v3 C& T4 s. S9 Y# u
fd 1

: X- y8 H6 u1 r# t
, c  _# e! z; ]+ ?  D& q7 {% ^2 difelse(other turtles-here != nobody)[

; s8 M3 \7 j: L4 Z; I! A6 `1 I7 S( l5 D' ?  j' x& R
set customer one-of other turtles-here
: R4 O- q- [. O: V- ~
, X: @0 C) I! T7 b, F7 Y9 }5 g
;; set [customer] of customer myself
% n" p0 n, H5 R7 E& S5 U  N
" L* G" p0 v; L* ^8 O6 b! x
set [trade-record-one] of self item (([who] of customer) - 1)1 T/ a) n8 T5 K. z
[trade-record-all]of self2 Y$ u  }9 U: J; _  R
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
  m. w5 N$ y+ o6 ^% d8 B
2 \! @2 f! |$ q/ Z3 s! a
set [trade-record-one] of customer item (([who] of self) - 1)
: \- l( A' K" x, u6 d[trade-record-all]of customer
+ }& v, a& G  N, s* w/ P% u0 ~

, x* g$ D- }: A9 _( W5 pset [trade-record-one-len] of self length [trade-record-one] of self
: p' j9 p8 b3 m8 Q" L) I
% ?0 A( |7 ?8 f) h6 L9 N5 M* Y
set trade-record-current( list (timer) (random money-upper-limit))

: f+ ]' K$ M+ B. l/ \3 \0 \
+ u5 \7 e# o8 S- ]. y' Eask self [do-trust]
" g$ ^% ~$ Q! Z& w7 B  ~;;
先求ij的信任度' G( V/ B5 Y& C/ H+ n3 M  G2 T! e
0 F5 ^: E% W* P; j- \
if ([trust-ok] of self)
& V/ p& i$ I8 ^" U5 \7 x4 X# _; Z! y/ R;;
根据ij的信任度来决定是否与j进行交易[1 L1 S% u! L2 T" {9 B4 O
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself; l1 l7 w5 K* i  h
0 C3 F. n$ k9 }6 v! o7 V& T
[
1 z# n( i: R# t
- p! l( s+ b4 F% G: v) \/ F' X
do-trade

$ P/ e4 V. j' x+ @" o' l+ F
5 a+ O7 D, u! @0 Z3 Q0 M/ X$ W$ qupdate-credibility-ijl
" A9 w* B1 m$ \) J
% Y9 d$ ~2 c/ o6 i! B
update-credibility-list5 J7 A% N' G1 C3 R2 G

% c5 y9 Z; g9 O( a5 b6 C* D) }# \
$ h8 v0 X$ L) u* I; {update-global-reputation-list

( o+ k) R9 X' b; y) O2 i; }
3 v( h$ U) Z( ^6 {9 S% s+ E. S* N/ `) ~poll-class

) I# N4 Q8 H+ x6 K$ a9 w
7 T! B3 O- G3 q! s/ a, bget-color

+ ?; [: e1 w3 _, D! H. r
! |; f% j& q; J9 Z. ~8 q# R  j" e]]
& d; C7 s4 m* ?) ~! W( _- ?
* k6 J9 a! L" B: ^;;
如果所得的信任度满足条件,则进行交易; x, X3 B% s9 k7 r2 |* R

8 n* d5 p8 \/ z6 Q[

& j: s9 r: A9 _1 b: e# l% A# P2 ?* Q
rt random 360
( h! U0 K8 ~$ ]

  b% l/ a) G8 X1 Dfd 1
' M( C) Y: v3 r  H& a2 h  J
& Z+ `& }! e; _  q+ i
]

2 s# m6 U% z# |; p% u9 H+ K: V! h1 g) }* Z$ u$ A1 k
end
* M" `/ d( A9 e5 ]/ D" u, e( k1 i
/ y6 Z! K" B: h$ o5 j
to do-trust
/ Y$ b- F1 ?9 P% i5 Y! f- Cset trust-ok False0 ]* K1 L/ g5 ?# T1 T4 X

1 ]& J: ?6 I- }5 `

' f, N, m! i+ M( h# e  I; klet max-trade-times 0& {0 b1 w/ ?2 d! B" N: r4 j- v' @* N, ~2 i
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
- R6 ~) _0 ], q9 G5 T8 Y5 klet max-trade-money 0
- b: d0 Z* I; u$ t. oforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]- c# I( r* X, ~2 ^( o+ ?
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))! P0 \3 O& w) o- C8 x
  @* ^2 w% G6 Z6 T
7 V) T1 e4 V0 o. q# ^
get-global-proportion( U# A3 }& W4 H* P- c  q
let trust-value4 e+ w) k) l8 y( d9 e8 T7 s
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)

7 [) w' ?. a9 ]+ p6 u: i3 ]* |if(trust-value > trade-trust-value)' L% W9 T6 ?: G* N: `
[set trust-ok true]
7 l; Q% V: `9 A; R( t5 w4 ]end" i7 [" F+ ~; k
$ b1 D& a- k8 i# A" x3 ?, u
to get-global-proportion* t1 i# Z6 S& E6 V- a9 J
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
6 O) J$ `/ U' V- u7 {& L[set global-proportion 0]
; e) r! t1 d) t6 W7 c3 {[let i 04 x; C0 c% a1 s/ ?/ k) B4 X/ D6 r
let sum-money 0- H( @) n. I. d. g
while[ i < people]7 d# P: k2 |7 I/ A9 d! s
[8 S1 a+ Y: e/ U: J& e
if( length (item i
8 M. @& t- V- W: U8 `# X[trade-record-all] of customer) > 3 )
- ]5 j( |5 S( x
[
; Z- W7 q, ]  d6 r$ yset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
4 v# ?; S2 z$ f" V1 T$ E  |]
+ ^: w5 [  e/ G1 H% i- z4 j]9 C9 }- F- G/ |# ]
let j 0
7 {% Y4 W1 R" A* P% P" xlet note 06 q% Z: i# W* C9 T0 {! t" U) N
while[ j < people]1 n0 z! r# `/ Z: n# g; C6 r
[
: q9 L) d6 W" P( k7 R6 uif( length (item i
$ ~3 c! Z( d, {4 N) }; T  u[trade-record-all] of customer) > 3 )
( l0 ?3 w& a/ V
[# `# b3 h, h* g) g  S! q, O
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)3 R! h8 }8 a% t. Y3 {
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
7 [5 h6 o8 M* p5 p& F) [  z5 T/ x5 ~[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
  f9 y! ]6 S  ?" f+ U]
) S- Z$ c) w; A8 y( [0 Z+ i]8 w) A1 |# b. J6 |3 E( J  ?
set global-proportion note, N- o' E+ L( u# _. |6 F
]
9 K, V; Z/ G8 z/ U* Vend# f: k0 q3 {7 u' i8 f) R- @& ]
) N& _5 |: C/ y+ N1 v
to do-trade6 y/ s8 P% p7 H4 c0 P) }, t6 H
;;
这个过程实际上是给双方作出评价的过程
$ e$ {2 I% ?8 J. J; dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
$ [# r  v# [( s0 g- w2 cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价" R  N4 r/ p2 Q
set trade-record-current lput(timer) trade-record-current
7 }  [4 G0 |; X;;
评价时间
: V$ Q4 y- Z, l% eask myself [
+ U! T& Z  `; i& Y% Supdate-local-reputation
$ a1 q! o. C# }" lset trade-record-current lput([local-reputation] of myself) trade-record-current
; ]- y% r8 ^$ Q9 W0 y6 Z" N]0 q/ b+ P- @+ H7 M% D- j) Z! @
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
: q  |+ D9 ^$ a* Z;;
将此次交易的记录加入到trade-record-one/ Y/ x) q' H. M
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)& n4 [, s+ X+ d/ o
let note (item 2 trade-record-current )& W" W9 }" v3 l; C- C5 ]1 r
set trade-record-current
1 l7 ^2 Q4 z0 p1 o# \4 E3 |(replace-item 2 trade-record-current (item 3 trade-record-current))
0 W  D; F/ S/ }2 d; B+ J- ^* ?
set trade-record-current
; `% D: W7 [* T5 f6 t(replace-item 3 trade-record-current note)
1 A* U5 J4 @7 o! c1 w* ^/ |( e% W
- {2 Z* @$ E9 R2 Y' t+ A
ask customer [' E2 Z( j' Z  m! \+ v
update-local-reputation
* D- u1 d6 E$ x" @1 t8 nset trade-record-current
' |9 {2 l: d) B; o# I& _' @  i  v( e(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

- h$ E' q8 a" o) f+ Q" B]) K' v& I1 Z3 v

  w' j3 k* u9 d; `  F% {
6 {( x- e2 g  d1 G
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer$ u" P! a8 M; A) y. Q3 s

& J! y' Z, _5 _# L# f: c6 _set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))$ j" n  J: L; v0 l+ h
;;
将此次交易的记录加入到customertrade-record-all
$ @4 H: o, f0 a2 r8 B. A1 |; K& send
) W9 `9 G$ a* `
% y1 F& ~* X1 o* M+ v' qto update-local-reputation
. f5 I; t1 o/ x) k& Y# ?set [trade-record-one-len] of myself length [trade-record-one] of myself6 y# [0 ]! \& S* x
6 ^6 p% v0 \2 l
/ O* u( ?  k( O' z7 ?* y- f0 U
;;if [trade-record-one-len] of myself > 3
: a! z+ c2 h2 D4 J
update-neighbor-total
: l" c9 q. o6 m;;
更新邻居节点的数目,在此进行; n) s( ~* C* t: c' `
let i 3
4 r% H9 l' k6 z$ X3 X8 Zlet sum-time 0: v2 z" S( u7 c% P8 C- i# p/ Z. p! x- L
while[i < [trade-record-one-len] of myself]! Y+ E# T9 G7 P
[) e) R$ v5 ]9 y& p! c* S
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )8 ^. J) j$ X/ v. x
set i
6 _% \0 L2 O9 g, x* {( i + 1)

* f5 K1 u  a4 i6 p6 c]9 f* P9 U7 b* }. t/ N* ]/ Y
let j 3# U6 X6 ]/ J" ?+ |* M4 q8 J
let sum-money 0, Y" p7 D* F: v) `" v8 S% ^
while[j < [trade-record-one-len] of myself]4 C/ U+ ~$ e' J( [8 @  A( K
[8 N$ n1 [* |* ]( S8 `
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)8 [" m  M6 I- j2 D
set j
& U+ f6 S( H6 I8 V! S) g( j + 1)

& u+ r' S/ b; c, M. R/ C0 `]2 M( _* e( Z* |! \! ^# {% m
let k 3
# q  M5 L  s6 v# I$ `) slet power 08 z. \8 w) M$ M1 B8 C( H
let local 04 x4 c! ?+ p4 @: s" V1 ^7 X$ ?/ v
while [k <[trade-record-one-len] of myself]5 O9 ]: e& ~0 w
[
- f9 s: c( A* X. Wset 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) 3 I7 v- [3 ^, ?. ^& Z( _
set k (k + 1)0 V% x# G9 k* P' |% I
]/ l5 M8 m9 }* v
set [local-reputation] of myself (local)( N/ X8 i8 p1 p, i
end
$ V" e: `+ g2 }7 x) j) E9 X: A  b; A- Y  S
to update-neighbor-total: v2 V  }' Y" T0 f& o% ^- h2 n% d
4 Q- b' _  J9 |
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
* \9 d& N, W+ F) T5 u: B4 Z- H" Y3 c& `
  l7 d  W- \) v' f, ^7 w+ B/ o
end/ M6 }0 Z! h- u- H" @( C
0 n6 H# a# }0 `8 T4 p; H
to update-credibility-ijl
) f% e( q$ O* Q" ~9 I/ Y
1 j$ H! `5 f3 O4 [$ M2 O) I;;
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) U4 s) a5 i- [+ F5 g+ P. u) |% C
let l 0  [; _6 a% T. |0 F6 U. A
while[ l < people ]( K- p) e6 }: t! {% b0 m2 N; k* p
;;
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
+ c7 _0 g* S* U4 s[* }' M8 a" x2 o# i  o
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)! i3 o6 y1 F& ^5 A7 c
if (trade-record-one-j-l-len > 3)
! [1 B. g' y5 B* Z3 B7 [8 M7 y[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-one1 a2 D2 S3 D9 w, [+ s. p! `: Y: q
let i 3
, @! E$ R* ^  T1 f0 K, e7 l0 e/ c# blet sum-time 0
( n6 g( v" U. m  @/ Twhile[i < trade-record-one-len]" U3 w. w9 \3 t' l" D& z$ V7 F
[: T4 K1 P3 u* _! z9 l
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
# _& ?( S% y" @1 G! R$ K# aset i1 t/ @* W- [6 v' N& W
( i + 1)
& b9 R- a# d9 m& y5 Q9 Y
]( @! K0 S+ H7 T4 e, S
let credibility-i-j-l 01 N" w, T( T8 a6 Z! D0 {- s
;;i
评价(jjl的评价)- N3 p  o6 \2 T7 l1 `, ]
let j 3
# C& I- _* c8 G8 blet k 4
5 I4 }; p2 ~( k' m. N7 @; C; wwhile[j < trade-record-one-len]
9 L9 c- k/ b: R; a9 w[: E- D; [+ d/ X3 x9 B; p. _
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 i% L! o! K4 s! V3 D" p
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)
% D2 R( ^1 b- X9 N+ ~$ _: t% Cset j! h# e9 u) ~6 _2 |9 b# N
( j + 1)
# h1 A& D# A$ x! Q& G, [7 w
]6 K' S# S) g$ e
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 ))
& P2 N' t6 m9 n0 _% z! U0 J+ e4 n2 B- z, n; ~  Y0 [: D' p* {2 k' S

! I$ _* _% ~: \+ I0 C9 c9 ~let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
. D5 N+ r8 U( P8 M4 k. P8 w3 f  ]0 O;;
及时更新il的评价质量的评价+ \9 T& C8 v6 G' Z" G1 M
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]% i7 ~  S( A$ J9 m$ E
set l (l + 1)
, U# Q) x+ G; h]3 }  g. D( P, ^1 P
end
/ M* s8 K0 [- B* G4 g4 c& Z! J: u' I, D" p
to update-credibility-list- }! l2 G# R+ e) l5 B" {  p
let i 0% x& P5 ?; `% p* A( ~+ M
while[i < people]
. s0 x0 O) O7 q  J[' e# U1 @* k: I
let j 0. t, z) g* e. g
let note 0/ O( [( R0 _& K7 g8 p. `+ q
let k 0
% f% C3 Y* B/ `;;
计作出过评价的邻居节点的数目
# z6 L# q6 ^- K7 hwhile[j < people]9 T' j  u9 i1 r9 Z
[3 T, @  V8 x/ V# N- i" i4 @
if (item j( [credibility] of turtle (i + 1)) != -1)
  y5 W& ^) g. Z  d' S2 I, [" z, o5 t;;
判断是否给本turtle的评价质量做出过评价的节点
2 i: F; f+ F/ W- u3 r& X$ g. n* C[set note (note + item j ([credibility]of turtle (i + 1)))
7 i) `3 Y- Q) x, P4 C- m' {;;*(exp (-(people - 2)))/(people - 2))]
5 u2 A- w# `5 O& o7 o  i/ ]
set k (k + 1)
. e# L5 p( ?: J0 ]) l* G5 \" u0 j]8 S5 I: J5 ?  I" K; y0 G* o3 p* u5 i
set j (j + 1)
9 \7 e7 q4 G: t5 k5 G) n8 ~) W+ F]' f. G! o7 G3 ]3 w; q; B' g
set note (note *(exp (- (1 / k)))/ k)
: A' L$ p( x$ jset credibility-list (replace-item i credibility-list note)9 \; L' J  h4 L1 Y4 O" }
set i (i + 1)
+ d* D$ I" z) O. J]
8 ]: {1 z1 ?9 @9 M" nend
# _& e0 J5 s; z4 \  m
5 `0 }, c3 i; c3 `& I! R0 ^1 I5 Gto update-global-reputation-list
+ Q- L7 M% k( Xlet j 01 i* @" b' g0 w
while[j < people]
  }/ b- ^8 u, T: H% S7 O[2 i" v, }+ }1 t! J; L
let new 04 z& ~9 s0 O$ A" N8 ^  V4 ?& J* ~
;;
暂存新的一个全局声誉& i: ]1 t/ W' o. P3 p
let i 00 [3 Q) }% z  ]4 W' {/ Z9 W6 Y6 Z
let sum-money 0
/ D7 t3 G! e. N; ?' rlet credibility-money 04 ]) L# F* l7 i# F8 h5 p4 f7 X
while [i < people]
; x. O" H: N: R: }2 u[
+ G8 ^2 O3 i" Sset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))# t3 |" P1 }# v2 t' c. B
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))1 g7 ^- b1 H6 e$ x! M6 C
set i (i + 1)  ?5 S! x( E* f2 R' s' Z' I1 I  H
]
! g3 B6 d$ w. y% rlet k 0
) _/ G* U3 b1 [; J7 Rlet new1 0' C0 M7 v2 G1 g
while [k < people]
3 u* o' `/ B$ ^2 @; }) r, |[
4 b8 x* F+ S/ Q* y. ~: qset 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)
7 R3 B/ z( c- Gset k (k + 1)
6 x# L9 T  j9 ?% H( V0 _* N; m- j& U]( V) k* n9 p! m1 u* I$ Z/ U
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 6 w5 i- E, v- a1 M/ a1 e
set global-reputation-list (replace-item j global-reputation-list new)1 {. L, {+ P- J) p
set j (j + 1)
; [" m) H6 ?  c7 i. D& Q]2 ?9 Q+ N3 A. p0 z$ h1 k4 @
end1 H( I# R2 Q. @; U
) }8 f( {$ w# J% o" U% E0 d, H! L
, v4 U4 |8 C  D$ b7 ^+ K/ B' r
# {; A! L/ G+ Z" W
to get-color+ Z9 Q' o4 W2 ]# B+ w

3 Y, ~1 C3 |  r' m4 @' ]set color blue

! k% n9 f' P( ?8 yend
4 D) N! E, G& _, o, e1 Y3 l: W( O. Y8 U& J1 d
to poll-class
# ]7 ^; n  i0 B8 w5 p1 C( l+ send
9 Y% N  V- H! f0 o6 F* C' p! \3 I  C7 X# V. t1 R' w
to setup-plot1) q$ L  P. C! Y+ E$ _  x) z( C
1 o% V' u7 x; R& [/ n" Q) @$ z
set-current-plot "Trends-of-Local-reputation"

8 ]# c1 J4 s8 ?/ G$ ]/ K. j! e4 K1 T9 S% G
set-plot-x-range 0 xmax
& [  q6 A& E- s3 b9 Q8 w, ]
5 V% @2 D: f9 @" F; ]
set-plot-y-range 0.0 ymax

, ?+ B) `& n( `6 v# A, \end
7 t: F# B9 O) O* O9 n( u. t$ a7 }9 v0 m. z; Q, ~8 W& d; J
to setup-plot24 p" h& q1 {4 L# C
9 P4 t- T9 Q. \$ g' A% s
set-current-plot "Trends-of-global-reputation"

2 q& M- z8 R) Y9 d9 d, x% H+ q# v; L0 t$ X, m! D" D( r% m1 `, ^
set-plot-x-range 0 xmax
7 U- I! w+ U$ F
9 w) L  g8 N8 ~
set-plot-y-range 0.0 ymax
1 ]5 i/ B6 k9 o6 L
end
4 o, U5 D3 _" M$ U# }$ X% ?3 F; V& f* P4 F; g
to setup-plot3
( i% W& O, p) X0 j- w& U+ z! q
& {$ `1 S+ `5 S! Q4 F7 T. J; f; Eset-current-plot "Trends-of-credibility"
  n! Y' m7 q' _

3 K; d3 g5 z# T, Zset-plot-x-range 0 xmax
' G. ~4 D" m& b' ^' a0 u7 }6 B
3 p8 x0 A) T% d6 L/ _! r
set-plot-y-range 0.0 ymax
1 o. P( @! z& M) Z# Y2 u
end
; z# B' O$ o! f3 D6 u1 i5 @# V& n! ?" U9 l! u% ~) r. H4 m
to do-plots: B! @' ?/ J; i
set-current-plot "Trends-of-Local-reputation"- ?+ W+ V# v  o/ M) h
set-current-plot-pen "Honest service"4 e- u/ J5 \! c. i% G
end' u% S4 Z' k+ E1 D: \( N# \# m6 L7 y- h

" _( N# [3 {" }$ A, y0 x[ 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 D! M1 }7 A1 `
2 r. m1 l3 u+ o6 E1 Y5 C
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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