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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:
, e8 @; {/ R& N. z4 t  Y: r& Fto do-business % S7 ?! I. p, N, s5 S9 K, E
rt random 3600 O$ _( C+ f2 y' N6 A9 y% I2 F
fd 1% }: J- t  l$ ]8 v9 L: W7 c5 Q
ifelse(other turtles-here != nobody)[4 X0 b( J. P8 a, j& u
   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.- U% L; J7 F8 H& O3 v. A
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
- A: E% ]) S3 ~/ P4 J  D  {   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
9 ~( ?# Q6 S' I5 ~" X0 X   set [trade-record-one-len] of self length [trade-record-one] of self
1 v% ]0 C4 @" n. [7 J8 l6 t   set trade-record-current( list (timer) (random money-upper-limit))/ @! @; j: ]6 T. e  X: X( M

( G: _$ ]% U) l$ I问题的提示如下:
6 Y- N, H" I7 f2 `
$ Q! q8 Y+ M6 a% w, F. V* @# F( Zerror while turtle 50 running OF in procedure DO-BUSINESS
$ [% P4 d4 s( V- T+ d  f  called by procedure GO
0 e$ w5 p7 H" [# a" l- aOF expected input to be a turtle agentset or turtle but got NOBODY instead.
1 U5 j2 E  `$ `3 K5 H& N
(halted running of go)
% E1 Q% Y1 l% O3 K
( X$ M! }0 x/ U3 d) U- ?6 Q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~~; Q6 ^; O, e" c9 H
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
  E7 }9 ?0 \5 ?7 \! tglobals[
. @( Q! Y1 J7 g4 `( n6 h0 o$ oxmax
- y9 c: i) T: l8 f0 G3 `2 kymax. T, q1 y, P" E  K5 j. F- ?
global-reputation-list
4 f3 \9 a* i. i& z; _9 w9 x& r5 v  \, G2 F" b
;;
每一个turtle的全局声誉都存在此LIST; f% t& j3 k6 o+ R8 K
credibility-list
2 F/ @* S2 u; c4 N;;
每一个turtle的评价可信度, F; w: Q1 g' V% w, y# W
honest-service
) l3 ~4 O& V2 n5 F! y) v. ]( Zunhonest-service
0 ^' H! K; U5 f$ E9 v9 _' Roscillation
8 Y7 z7 D9 [, p- a5 l" }- |* U+ m3 G# frand-dynamic0 `, o: y# k3 m% u* F
]
" M/ u( d' f" b% t8 }4 D# @5 f  N; T' \) V1 T
turtles-own[
% E: B/ o* m0 R) vtrade-record-all+ Q3 }* U: a3 h" ?( B- o
;;a list of lists,
trade-record-one组成7 u* n6 u7 s" ]- U' h+ f4 W
trade-record-one$ s; W1 {4 W" W6 ^1 G
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
! Z- m: F4 o3 E4 F6 @& c  ^8 ]5 f
6 X! }7 U: h% h, E;;[
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]]
% c4 d& B1 O& ]2 |6 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]
( t- `2 W7 |- M7 I" S5 @/ l+ fcredibility-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
0 |2 z, R6 ?: t% ]neighbor-total
) L* [( N- p4 E8 A4 ]8 b! T% c7 L;;
记录该turtle的邻居节点的数目
) U  Q7 C: U/ n" V/ G9 Ftrade-time) N9 }) `; {/ M9 y' Q7 Z( w) `
;;
当前发生交易的turtle的交易时间
. S  }( W- T  T& Yappraise-give
# u5 N1 X- f* M" G* Y* Q' m  o' h' b# B;;
当前发生交易时给出的评价
: D( J, ?- ?0 x: z7 xappraise-receive8 b1 }# I3 k8 i
;;
当前发生交易时收到的评价
( C+ {# y( S* _8 H; o( a0 Eappraise-time6 ^# T3 c" r7 p' G7 T6 q
;;
当前发生交易时的评价时间3 {6 A9 w# |6 Q
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
4 v5 ?3 s# ?# w, K3 D; P+ A. Ptrade-times-total! J* m, v& t& x9 H( u; g
;;
与当前turtle的交易总次数
9 j8 J1 c( v& v) k+ F% a! \trade-money-total9 G4 a6 W, k9 A
;;
与当前turtle的交易总金额
, Y8 E& @4 w4 D- v3 vlocal-reputation
# l- u- d$ ?* S3 q, K2 }global-reputation8 [9 d) t5 p5 n. H  j, B! C
credibility4 {$ w3 q+ K9 G- \0 g7 ?
;;
评价可信度,每次交易后都需要更新
0 S# h& G" ?( g6 o8 Icredibility-all
" p5 F, \, }' T* X" g;;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4 C9 R0 V& l8 @/ M/ I7 a9 ~8 E
/ f( b: U2 U7 j" S/ g
;;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  V: B" v3 b( q1 ~% ]
credibility-one8 w6 V0 K% z5 {% l: ]
;;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. X5 y8 @) c, m9 w
global-proportion
3 [$ S* {0 f4 u5 j) S( Icustomer
* o; J) m2 h- z) J6 s* qcustomer-no
2 H4 v; m$ l9 E8 K- f" r" n) ^+ p0 Itrust-ok
0 g4 S# X+ K  l) U" s0 @trade-record-one-len;;trade-record-one的长度
, a7 }; z4 p& e6 Z4 y3 R]
4 W% I& y$ f6 X6 Q3 ^3 W
; o2 A, T/ a5 v: K;;setup procedure! u6 ~! M6 E, |( N

; h* O/ I4 W. B8 ^) E1 @" vto setup
+ x+ `- ?1 W6 s8 D3 Y, L9 v- z) Z% c/ N5 Q
ca
! M; v9 e- v# M
9 D* g  {7 P5 b# C
initialize-settings
' K7 @5 I! [& `) x
* M. d( s6 i1 b3 a  u
crt people [setup-turtles]
( P9 u) b' ~3 E+ m

# S4 N" @- o, k6 Lreset-timer

1 X8 V' |+ Q( N& J) a+ z& \7 ]' f5 d0 M7 E2 t; F
poll-class

3 U( G/ l6 U! u  H& A$ u3 u" B# b$ {! h" s) p
setup-plots

  t: e: `4 X' `( a% a' p4 h  K
2 S  }/ ?( j" `( i/ Q, q! z% Bdo-plots

. m, v. d8 h  N1 g4 t1 f# Yend" V4 F+ e" x2 K# G* i
/ o0 n# G1 o2 A4 g/ r2 K
to initialize-settings4 M1 _2 ~2 U* x, T
' @" b( t5 J" {; c) \4 J2 q6 g
set global-reputation-list []

4 j1 h- R7 H; E7 I( r- V& p0 d
% @+ }; ?5 l( _. R  P5 wset credibility-list n-values people [0.5]
9 |# L6 x3 \8 f; p3 p1 Z

+ l) H' ?6 Q* e$ b4 B; ~! s7 mset honest-service 0

. k: X" u; J$ H) U4 U6 {3 Z
* L9 g' Y# a" J  U  D: Cset unhonest-service 0

. \0 F8 E& v$ K9 j$ d" Z  d( Z' N+ x" U* U4 _1 z" K1 M" c/ i
set oscillation 0

* @4 C* w/ n# F8 m# o1 s4 A, Y" B; I. v8 l
set rand-dynamic 0

1 e5 u# {. \1 u/ Z3 ?8 Bend
# V: T& N. ~7 ?; W! c! E
: O' X' }3 j6 O2 f% b$ Hto setup-turtles ! P/ V0 |! j- B9 Y1 F$ v7 x7 J
set shape "person"
2 v1 d9 U; R+ g5 P  ~- esetxy random-xcor random-ycor/ K) u! ?- w/ W0 {* D: t
set trade-record-one []
  c2 r/ i4 A3 R$ ^1 z9 f

: O) x3 V8 _8 S; f! N# {4 Oset trade-record-all n-values people [(list (? + 1) 0 0)]
( [% l- j1 n8 K2 y9 t) A
# m1 w6 ?- B  }1 E2 j' g# t
set trade-record-current []# R  p# b- S; {
set credibility-receive []
9 ]0 W4 A9 X' Wset local-reputation 0.5
7 l$ q9 Q3 i- l! ]+ T" [set neighbor-total 08 l3 F. [: s8 ]* s5 r$ n, r! J! C
set trade-times-total 0
- C0 }1 t5 C; Rset trade-money-total 0# t( m( E& U+ G8 {+ }) z; k
set customer nobody
9 {+ K0 A, n" x! Pset credibility-all n-values people [creat-credibility]
- F3 t- A* o+ [0 C( tset credibility n-values people [-1]! z# j; u' R. q5 {5 n8 V/ X4 u
get-color
$ d8 \7 |" M5 z1 E" w/ K

8 Z0 l8 O$ F* F8 p* l# X: R; Send
( O$ l5 v+ h3 i4 H# E  }- v) w5 s( X7 L6 P2 f
to-report creat-credibility1 F4 {6 A) M9 `& s+ `; U
report n-values people [0.5]
- r2 O& _% R: aend
4 `% W7 ?. k! [/ [1 Q9 w, ^2 T# K0 {. Y8 h, ?, P
to setup-plots
, a! W( ]# H. q. W& I, p$ O5 {% P3 B$ m; y* T
set xmax 30
& j3 Y* `* b/ t1 y: Q

! ?2 ]2 {% }& d& F7 E7 l9 m2 pset ymax 1.0

4 [1 u% J# V) y/ |+ v" z
: W" d& N6 c+ U" A$ oclear-all-plots

: e0 S2 ]( Y3 L8 J# f
; U6 a9 v9 Z0 B3 ^* ^% jsetup-plot1
7 C) ?) F" N- K

1 S, ~% I  w/ U0 Q/ o* r2 Isetup-plot2
* N! p; s* }  @, _: X, }
0 @6 \6 H4 A, Y5 p
setup-plot3
& |; _: j( e+ G0 z( F- e5 g
end( D$ a4 Q2 M9 r9 Z0 k

# `2 ~; v$ a! e- e! C;;run time procedures/ ^) d; H' T  m0 I( }
5 j5 |9 V6 _* y* m
to go
* j! f  S  p+ @$ X7 W
) P6 |4 P9 o- P) q7 |2 `. ]ask turtles [do-business]
/ K" W7 A7 z5 D4 D
end/ b. ^; e1 ]$ s2 M6 p9 D
% n7 c; t  L" Z. n) R( D5 y
to do-business * n  f+ N+ J$ J/ Z7 i, k# e
/ o! y* U5 h4 ~0 n' p" \) q& A

) |$ Y; A! u5 r* M4 o, h9 Y6 Lrt random 360
- E7 ~8 O  t. V+ \2 S. c

2 ?5 V# Q4 E% `+ Lfd 1

  i: W4 F) c3 {( G& E  S9 k: n/ y1 F+ d+ z4 G, ^8 S
ifelse(other turtles-here != nobody)[
) H4 G) x1 n: B8 G: @

! L5 p3 r0 m: O3 q5 T, J/ Kset customer one-of other turtles-here
+ ^. t0 Z- i) r/ g7 E6 D
2 j2 |$ r+ [9 G/ d* J
;; set [customer] of customer myself

" k+ G! k  {0 K/ K& h9 j" B* q6 x" \9 G. U# O" Y5 f2 V- @' e" Y% ~  @
set [trade-record-one] of self item (([who] of customer) - 1)
5 C, y$ X, f  D: w  A% ][trade-record-all]of self
$ B0 r6 R& g$ b( S;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
6 a0 f  K% U2 n9 u( t

- L" M, T" n/ W! R9 Lset [trade-record-one] of customer item (([who] of self) - 1). e6 v  l+ A. K$ @. U$ U  x% B( F. ~
[trade-record-all]of customer
9 n  r- H$ N( \

5 ?' p( p" p3 Jset [trade-record-one-len] of self length [trade-record-one] of self

  w* b" m! `( ]2 \; J5 Y' @
/ s. z, k. i, g# a7 Y: |set trade-record-current( list (timer) (random money-upper-limit))
  S# m  H9 `) b! x1 G
' ~. `1 B! g4 v- h0 [3 P9 f" J2 w
ask self [do-trust]
9 R( _0 V! L8 R;;
先求ij的信任度' J7 }" p( u& {. v* X: l# @
; R# [; R$ X' ]# |2 ~
if ([trust-ok] of self), s3 f& M5 X$ E1 s$ t
;;
根据ij的信任度来决定是否与j进行交易[
: o, n; ]: U2 [ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself2 p% M) W5 |% Y
8 m& |# o; r+ s& [% k+ e. N; X
[

9 U3 Q9 d( D( ~' Y7 X* u+ M" f) U) F: U% D% z
do-trade
9 W6 O4 k. W9 O
/ C- S  C! p9 f& Z& Z1 j
update-credibility-ijl

* O  g5 U+ Y2 F) U3 Y5 V8 \3 X! w6 E; \+ t* |
update-credibility-list% j" I0 h0 Y9 m& Y2 m5 @  V1 x$ d. j
" R# {( M) {& b
" |7 \% I& p) u6 I$ h" r/ o+ M
update-global-reputation-list

5 N1 q( @& a1 p, o' g8 n" r- F( r/ x# S
poll-class

- t/ K) s3 A( [& ^% I
5 q' s3 j( I8 t9 p( U; Dget-color
9 B! S; y3 U7 U* u& N* Y
3 t! D: i5 {* z# c  r; S6 M
]]
: |( H/ M. a! U8 b% i6 d4 L+ @2 C- ]
;;
如果所得的信任度满足条件,则进行交易! Y0 X& B5 d9 P; l; a& v, S

8 @6 N1 |) M" I  P7 a4 C[

% _. A8 ?" d" I& L/ d6 L) j$ N, b9 Y+ r  M  O) \
rt random 360
: Z* [. ], w* ?5 G) T/ X
( @0 P" `' B( A. E
fd 1
5 L$ f6 @- P$ I- M. E% ?! H6 Q$ y

8 f) D) _! C" o$ D]
; M# y5 V  w! [5 W% q4 M

. R0 g, U# l8 H+ \' M( }3 S4 Gend

8 y* N3 S* l" C8 T6 g8 x# ?4 @
+ C5 |7 v$ p8 V0 d9 p7 Oto do-trust
* h- t1 H0 `& G  l+ m) Y2 yset trust-ok False
- n* M) ]$ _! [- ~% z7 u
; O0 w! N3 S9 T+ e! V% N
9 Q5 }! S! Y3 o5 b" Q6 `
let max-trade-times 0
5 E" U4 r# G; B  O. S: M  P% E  mforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]0 f% Y2 R+ W3 Q- K7 g4 y  u/ ~6 J5 q
let max-trade-money 06 d' Z+ r! y  a9 O/ l( }' ~- j
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]. n9 d' n4 P. z9 f9 }
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))% @9 g9 s. w/ R$ W

' r7 |. o; @& g; T: D
  O+ o0 {9 ^) H
get-global-proportion! Q6 K4 k) x' Z
let trust-value
, C$ p* d# Q/ ]  O* D1 \- s5 blocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
; T- G! D2 I% [' n4 n
if(trust-value > trade-trust-value)/ j' Y' H4 n0 X# w
[set trust-ok true]8 v# o; I" z" h6 a& g
end
+ B1 r' j6 W8 G5 I
) U3 E' b7 E; P2 F- hto get-global-proportion
6 P; q$ `3 k" a* ]2 ~0 qifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)$ U/ t, G, S9 i
[set global-proportion 0]- o$ y7 q/ E/ c+ D9 s  i
[let i 0
0 A: [/ H- A4 Jlet sum-money 0, w7 E  S% W! ~; N
while[ i < people]
1 t' K0 H5 H( v$ k[/ N0 g! d8 P1 k( G- N8 V9 Z6 ~% H
if( length (item i: `( n; `* _9 }- q+ U" g
[trade-record-all] of customer) > 3 )

- q) Z' ~2 H* V* H: m: I[
* G* x9 U1 l* {! yset sum-money (sum-money + item 2(item i [trade-record-all] of myself))- r4 q& W/ @; x' T2 s) A
]# G+ J$ T( I( r  d
]; U2 `. X) _+ p# j  [+ h; d" x4 E
let j 0' }4 j$ O1 R3 B8 P9 n
let note 0
1 j+ f* j+ t2 {* x/ d1 ~while[ j < people]8 ^" P  E) G  I4 D" k& J2 K+ E( q
[
- P# J3 Y6 g6 w0 E) I+ @if( length (item i; C5 j9 m  U& V7 P5 R! N
[trade-record-all] of customer) > 3 )

% a# o8 U) k  `. v6 q[
4 h, x  k7 C7 Y% B, _) Kifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)8 {" k" n! J# d/ |) k/ f
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
- K% i1 K) ~- T, B* S[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
1 q% M7 \  G( `3 M) X& k" `]
9 b" ?) b. c! B/ B0 A. Y! J]
# o6 {5 ?3 W+ j+ C- cset global-proportion note
' B$ T: p4 v0 [1 j% ]]% d( R" m, i# r) ?& ^% @
end( Y' D+ q8 R8 ?7 P6 X! ]
0 }3 z- p" d! O8 R1 b/ Y
to do-trade" V1 Z% h6 x' i# q: B. L
;;
这个过程实际上是给双方作出评价的过程
1 s  F$ K( c, H; i8 |0 G0 Dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价* ]  a: T) j% O
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
$ j- r8 g! v5 `* rset trade-record-current lput(timer) trade-record-current
. e% v& V6 T" Y0 i;;
评价时间. o5 M7 ]. U7 Q$ K1 N: i* Q, k6 Q
ask myself [
) z6 B4 H, w; e( S0 _/ ~  iupdate-local-reputation* Y/ u7 [: J8 \% c
set trade-record-current lput([local-reputation] of myself) trade-record-current' C: b/ Z# N1 I& L( E% ^
]
6 T9 q" ], w- g  |. aset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
; o+ e5 L* F5 c) }! n% L4 R;;
将此次交易的记录加入到trade-record-one, A6 b( Y1 ?  u( h& L7 L
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
% \4 S9 A3 N( N; d& ulet note (item 2 trade-record-current )/ h8 L7 o0 M: m; F3 `. m5 X4 C
set trade-record-current/ {5 o9 L: q! [. ^1 \! ?
(replace-item 2 trade-record-current (item 3 trade-record-current))
" |: b4 P" S# r. R6 C, Z
set trade-record-current
3 K% Q! `0 _0 D  d* h" Y(replace-item 3 trade-record-current note); f* y: x1 X$ f: f; q

) g! S; v0 }7 l) l
; f2 Z# e0 h4 {- r3 i
ask customer [$ t, L5 h6 |- C( ~) s: R" N
update-local-reputation
9 \# |* S4 ?8 vset trade-record-current
+ q  h8 q9 Z& T6 a- z0 |(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

7 y! e& o6 e* i6 ^]
) C5 p: l: a8 M# G% S/ e( w) o' Y- b7 Y

; n8 f, e' Y9 ]9 ~set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- d6 f0 Q) J5 v: A$ F% {

; l3 F4 h8 B0 d0 l9 y, Rset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))' s: [( j  x0 h
;;
将此次交易的记录加入到customertrade-record-all
5 x: M+ e+ O+ C  d5 bend
* B" ~, B) a( q7 n& X+ w6 L
0 v; J& Z: n2 T% V& ato update-local-reputation( _+ n3 w6 r$ Q
set [trade-record-one-len] of myself length [trade-record-one] of myself4 G0 ^4 {3 h; J& s
; H) T# V8 l- b5 `) z! J" ?
9 \6 T0 |- C7 n, a2 @
;;if [trade-record-one-len] of myself > 3

9 j- E0 p3 z  g0 gupdate-neighbor-total. }& C6 i* x. z4 X6 n9 D
;;
更新邻居节点的数目,在此进行
( a4 B5 ~* U) Vlet i 3
4 p6 T( j% y9 L  V" b* A6 N2 mlet sum-time 0
& H! Z, n9 t# ?while[i < [trade-record-one-len] of myself]
& x( \8 \! F) q7 [) j# |! W' p* A  ][
3 Y5 o6 ]& R9 M' zset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
; r& A" |5 s3 Q2 \9 P% rset i: i, l4 d+ {4 A! ?. d  z
( i + 1)
  O& {* [" F: K1 K6 [* \; N
]( [; s! ]9 m! ^1 ^8 L* m8 l5 k
let j 3+ |7 ?9 K% ]  T+ q
let sum-money 0( h: f/ I/ l( T$ y
while[j < [trade-record-one-len] of myself]/ j% N8 P% K0 C* q. D+ V
[/ z% d  E( u! L% r0 ^) q$ _
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)! x. p* y  C1 O8 I. P8 A  ?
set j6 X$ Y3 a+ T8 P0 Z4 }3 W
( j + 1)

4 J1 ~! ?2 d1 T+ g! ^/ d! x]- m1 A9 N4 {, R! l4 ?( S- N
let k 3
2 J& D+ ]( ~/ E% Q! z+ _. vlet power 0
7 M2 U2 i, G" klet local 0
3 [" U! F7 p$ v8 I9 Fwhile [k <[trade-record-one-len] of myself]3 {& Z4 A6 F7 J0 C
[
% b" q8 y# L) @& N' [7 ?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)   X7 [  x/ p5 ^
set k (k + 1)
( d# g9 V/ K, H: Z) j% K]
3 C" U& h% Z3 s" ?; h* G- [set [local-reputation] of myself (local)
+ B2 R3 ]  [6 O. e  E! M- Vend
) _& K- g4 T. c* `* v% J0 x; Y+ b0 D
to update-neighbor-total; t  ^5 E4 N4 Q- D  x* ]* t/ H

3 n0 T: j- Q% L( @if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]5 Q/ \) I: o5 B5 ]' d

& r0 u7 g4 P6 G  I' z7 }2 u2 n
4 D: T- @; B' l: s) Y
end
, x- Q# c+ b5 \! k. d4 W/ b+ C& O. ^7 J0 {# p
to update-credibility-ijl
/ j, a6 Y! z' Z. c
# {" g3 _* `5 w4 `+ I! e8 d;;
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。. ~, F. `- \4 Q
let l 06 w; F7 `9 Y* \5 a6 B
while[ l < people ]
7 L) g( K5 o0 I  R' D+ ~9 m;;
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4 F. D1 ?/ r9 u
[
: [% Q, t  b$ W7 u4 B* v/ Hlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
- @- e6 c( H, E8 e, i6 Z5 Pif (trade-record-one-j-l-len > 3)% b; ~. W; F: ?- x" Q+ \
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
, p8 N, z) n5 O: b; slet i 3& w9 b2 o# d( w# v
let sum-time 0
4 w2 c. C' ~5 z6 a0 w# {7 @7 E* {while[i < trade-record-one-len]
4 d6 h. S% @6 ]( @" ~[+ [5 Y8 k* T- F; x0 m1 t
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
+ [% q: C4 O1 B! Q$ u, o( e3 Hset i
/ ^0 q0 d& H0 c. a  X2 \  N6 Q1 s( i + 1)
: C. r5 s9 r( |% P) d0 D
]
6 q1 s# t1 I, l7 R/ H! ulet credibility-i-j-l 0; @! C. c+ R# d, Y
;;i
评价(jjl的评价)) l. O4 V6 A4 i6 _0 w5 r
let j 3+ n, s8 e) h/ {3 N
let k 48 O( V9 ]( E, H+ o( ^0 Y
while[j < trade-record-one-len]
4 L3 e6 p7 F$ a[: x, b# Z/ c9 f7 H: O
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 L) z( c8 }; N+ m
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)
) k& o, U) y+ G9 s( r* Jset j
* m7 x* j- _, b% M1 U$ K7 m( j + 1)
# Y8 N' _/ H' Z, W
]7 @, q5 u8 S8 X/ ^# s; P% }" A
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 ))
3 E# F% c2 n+ q5 p6 x8 d* i+ d
5 ~% F; x4 t" t; ~! X! `* C

  {5 l- Z3 {8 s6 F- D& Dlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))# \2 H* I& Z! c4 V2 c
;;
及时更新il的评价质量的评价
  M1 j4 l5 ]. i+ B3 V# W0 kset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
3 J6 [6 ]2 R& Q! yset l (l + 1)1 o& q1 C  L/ V! f( M. r
]
+ ^2 {9 ?+ o9 T. s$ Xend7 o9 `% {' {# k. t0 E6 u

! }5 v4 f- @% l" K, c* s  qto update-credibility-list& t" `* w& d7 e1 _0 F) m
let i 0% A  u  ^& o) ~! v0 s3 }3 g
while[i < people]
+ `( Q3 z( ?% K, B( x9 i8 G[
) G' q% h. i2 u- Llet j 0
! G) `; w; k9 Z$ v4 Blet note 0
: q( Q/ M7 C7 ]; Blet k 0
& D# K# _6 z/ x+ g1 V" ?; o;;
计作出过评价的邻居节点的数目
  r+ r3 G8 c" s0 q  K2 n5 `while[j < people]0 s  r; t) W( N3 ^/ ?, D
[. Y4 M1 g$ F0 }+ p2 F! k6 H; X6 y. i3 j
if (item j( [credibility] of turtle (i + 1)) != -1)# a  M1 x$ b9 r+ P& K- E! Z# h
;;
判断是否给本turtle的评价质量做出过评价的节点: p) j: L+ M5 |: V& R% X; A8 S
[set note (note + item j ([credibility]of turtle (i + 1)))
: e) u# R: t% i) y0 E$ J. N5 u& d;;*(exp (-(people - 2)))/(people - 2))]
+ f& z! c' R/ ~+ w
set k (k + 1)1 h' l2 L1 |2 O: w  R5 n. O
]
* ?6 W0 ?; I/ v2 c# i% \% cset j (j + 1)3 ]2 v/ \4 o7 K% r
]
" e% Z1 \" \7 C  m+ ]set note (note *(exp (- (1 / k)))/ k)4 N! Y6 W3 A7 R& H, O; O( p
set credibility-list (replace-item i credibility-list note)
+ [: u7 h6 P$ G; E6 Wset i (i + 1): @. y6 B6 K- K7 i) F/ U) s& c. L
]
4 u) c% y) x3 d  Q: N1 Eend* P) Q" |& z4 [: k* S/ C9 _
% Q/ E, ]! m" c4 }' |# R
to update-global-reputation-list, Q1 d' n+ O. h
let j 03 ^# r9 T1 ?( d& ?% N
while[j < people]* w+ z& K1 ]4 @( u, l
[
0 w/ i6 d6 [( a& u, llet new 0
8 Y$ v( @9 M' L8 s$ k6 Y$ S7 k8 \9 k;;
暂存新的一个全局声誉
$ v1 F( W: k( a0 Qlet i 0
* ~6 d# e3 i; E' A9 u! zlet sum-money 0. y# c; y; c5 B) a8 r# Q- ^
let credibility-money 09 M, R8 ]' c/ o8 Z, y0 t
while [i < people], f0 ?9 w6 h0 I* K
[
; W8 b! x2 x% ~: W8 [$ o. dset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))( t4 M/ K7 \8 K% Y. x8 a& W! B
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))6 e: }. G0 n2 u2 O$ _2 F
set i (i + 1)
( }" r6 t1 k4 |- L1 Z]8 D, |- r7 L- @) Q$ W8 F/ Z" i, m
let k 0
% ?0 o6 l; J: k7 \2 v- X$ j+ U; Vlet new1 0
, i4 B! y" d6 S( Zwhile [k < people]& ]) A$ ]! o, c9 y/ z
[
+ K5 [* o  ~  h4 `9 ^1 E+ [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)* G- [5 J3 M+ W4 _" r) _+ n
set k (k + 1): L+ m5 ^# d# M+ V; q% t/ Z4 q& A
]
$ ^# S* p! L: U, F3 d; p. Bset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
& |# @( }8 }7 }8 _set global-reputation-list (replace-item j global-reputation-list new)
$ _% G; n: ~/ t8 n( [# X) |. qset j (j + 1)
& A" q' N8 V" z* d]
7 z! p% |! z$ t! K3 n9 Z3 T: N: kend$ l2 q* O2 `/ ?/ u/ S

- W3 W# Y6 m: ^  L* I, Y7 |& ?3 U* L# l- M% x

2 z- P8 I+ [4 Uto get-color
( e/ @4 n, N2 t$ P6 T9 U) d) S5 M& ~
set color blue
; N( B# X# t) g  \& M4 m( x2 u% R
end/ X. I5 ]: r3 A' l6 ^8 r4 ~
, Z  K7 z' n- `+ u* a8 d8 L
to poll-class6 o$ {0 p$ I* s  m* p
end5 v8 B. h, R$ b% ~
% C9 Q& d4 a# o2 L3 s2 C! c& Y
to setup-plot1! C- W% k, Q. i0 e* U$ Z
! c9 Y3 G5 r- [+ D  K; x
set-current-plot "Trends-of-Local-reputation"
* \! T3 K6 u2 |# b. v3 o. u

& E& P% R+ Y. f6 uset-plot-x-range 0 xmax
- X/ r6 O4 b- d4 L( E0 g, N. Q

' z  ]2 U$ u+ Z1 @) ^: gset-plot-y-range 0.0 ymax
7 B4 ~- w$ [3 w  \% B
end
( ^1 S0 K+ [9 O5 S7 \2 I( D9 z, k$ c0 W0 W
to setup-plot24 {' ?2 x# S0 e. D( F8 G3 I
# Z- F- D( n% B  B, K/ H
set-current-plot "Trends-of-global-reputation"
7 e8 n  l7 E9 u7 B* ?: W
, Y- J' A& g* e- r. \
set-plot-x-range 0 xmax

+ d' a  w! h' ]  Z& j  D2 w
6 _: U! ~2 N9 O) _& z, Oset-plot-y-range 0.0 ymax
1 p9 q* I: Z$ M, l$ x0 J0 p* C
end" `1 P9 x8 m* m. u% V5 w3 @
9 V9 D& i; j8 w2 ~2 k+ ^$ y8 g
to setup-plot31 `- D5 K$ M9 t
% \$ s. C0 ?/ }* P; a9 L. i" `9 T1 |7 v
set-current-plot "Trends-of-credibility"
5 e5 w) m  L8 _$ X# X

5 P8 A& c! t3 \4 R& oset-plot-x-range 0 xmax

4 ]; E. [* t! @, F& E1 N; |& g7 b$ ~/ E1 e7 z
set-plot-y-range 0.0 ymax
9 J) x: P! j7 f/ s
end" s7 w+ [% }% T

* d$ a0 y# \8 f4 L$ zto do-plots0 _; Z6 i7 |5 Q8 O8 Z! `
set-current-plot "Trends-of-Local-reputation"6 K2 q$ O* t  B, O; {, g
set-current-plot-pen "Honest service"9 R& Y: a6 g- v1 v+ c
end
- S% {  x3 L5 M) C3 y, _
' m+ W, w3 a& Q[ 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.6 o: e4 _" s4 O% Z

* N' Y' h3 W- K% B3 p9 V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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