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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:+ A. @& K5 T8 Y$ o) [$ Q
to do-business
% [1 p  ]) Z* @& W& D/ z rt random 360
" L2 V* g4 ~2 [; t2 {. c0 Y8 h fd 1( g2 [8 V( }0 n
ifelse(other turtles-here != nobody)[
. J# p( z2 ]4 c0 |6 P   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.$ {" j" s  u* i7 R
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ; S4 V1 L. k* L0 ^& \
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
# L# F3 c  V! h) b# |   set [trade-record-one-len] of self length [trade-record-one] of self, x; Q) C6 N* j9 M. \3 w
   set trade-record-current( list (timer) (random money-upper-limit))9 O# V+ o3 H  _; ^# ^# ~. V

9 f" G& O4 [% v9 v+ }3 ?2 `* f问题的提示如下:
0 E" x0 F: F2 c" a! Z& z2 n( k* ?
1 H3 r# u, r- zerror while turtle 50 running OF in procedure DO-BUSINESS2 a' S7 C( _4 e  @. a4 v3 W
  called by procedure GO7 F/ J. B1 F1 H$ K3 K
OF expected input to be a turtle agentset or turtle but got NOBODY instead.$ s2 [: o: k7 f9 H! K0 I: `- ?- f
(halted running of go)
7 R# Z. X4 _+ K3 W. h
" _- f  K1 I; ?8 j) u/ [这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~% I+ r- P0 }# c, g
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
" ?/ I1 V3 x$ p' O9 a1 sglobals[
3 x1 f2 W- O) _$ ?# }, jxmax
3 |' S7 B$ p8 ]6 c% g" J8 M. \ymax
  c( L9 ~& c  |8 Pglobal-reputation-list0 `3 v  g9 e* z. X6 N3 d

6 w  y& H3 q& n' S# m;;
每一个turtle的全局声誉都存在此LIST
8 o- M  ]+ G0 d+ Ncredibility-list
) }% }6 x9 X! J$ `3 z;;
每一个turtle的评价可信度6 N# F4 b  X% i& l
honest-service) _+ s) F; ^! F; R/ _) G* Y
unhonest-service
! @$ m9 _$ g) y9 Doscillation
' Y, L  g$ g' x4 e5 N0 jrand-dynamic/ |  _5 d7 g5 `" Y
]
9 I+ ?9 G9 C4 N+ `" t+ v6 S4 w" C) L: ^! A  G1 \
turtles-own[2 G: U5 |7 {, C) b
trade-record-all9 Z3 Y) W! f  k# Z* d8 l% s8 G0 z
;;a list of lists,
trade-record-one组成6 b/ x! Q' m% S7 v1 M# l
trade-record-one
: A+ l* Z/ e! ~9 I3 F' C1 x7 ?5 }9 `;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
# B! f8 ?! h7 D8 }; t, F
2 R; F( z/ s. k# b9 y8 v( l# {. Z;;[
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]]% j% N, @& L, H' I7 L! i
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]
3 g8 R  C& M0 l  O; bcredibility-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list9 s% Y4 ~8 u, _7 {1 R$ B! a3 y( N
neighbor-total2 M0 b0 p0 S% X, Y5 q4 M' V
;;
记录该turtle的邻居节点的数目6 e; f4 Q- R; K5 Y" Z" g
trade-time
1 b  E6 {; j5 M3 ^4 e+ ~8 U5 D;;
当前发生交易的turtle的交易时间# }/ ^5 g4 `9 {
appraise-give
$ G, l, R  Z! M9 K3 o;;
当前发生交易时给出的评价
) h  d7 J) m- k' o& C' tappraise-receive2 W0 e1 d3 u3 L" D
;;
当前发生交易时收到的评价
) {, a# W- G0 N& j3 h  ~1 |7 T) Pappraise-time
( p5 a/ s+ m4 _2 w;;
当前发生交易时的评价时间; h9 {2 f" U+ U# P. H5 U
local-reputation-now;;此次交易后相对于对方turtle的局部声誉% ?5 _: C5 p/ v) g+ Q
trade-times-total
8 m1 T  o/ w; T) U* c, ]$ B1 X;;
与当前turtle的交易总次数# u6 l; c7 `* Z2 F, g9 `
trade-money-total. C: h+ e6 ^' x; [$ ]
;;
与当前turtle的交易总金额; V+ z9 a% F- C9 o' D
local-reputation- v3 O/ Q6 r9 i! q% S( V/ `
global-reputation
9 ]; Q0 U; G1 M0 Rcredibility
& l, ?1 y6 y/ j. A# a3 `% Q;;
评价可信度,每次交易后都需要更新/ g) b4 a/ \5 W7 X
credibility-all
& }3 O1 s3 w7 v4 w: 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3 O2 F9 D! c& b: Y2 G) I$ E- J

! X3 V8 r$ m) _( m  n;;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# W% m/ N' q" |
credibility-one- @/ U) W3 y$ [* @! M
;;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
* Z7 [$ G# L, i6 V- ?4 n; K* vglobal-proportion0 E3 `9 I1 {- V: T
customer
. v# @7 `- Y, l4 Y2 [customer-no$ f# \* `" R, Z; t7 X1 Z; b
trust-ok
; v) b7 D6 d: F# ^. C: {trade-record-one-len;;trade-record-one的长度
) M8 T3 J! Y/ h. x9 b2 D, ~]3 [) U+ K0 ]8 [

8 y; x! ^7 p, _0 O( W/ b;;setup procedure7 G% p6 Z& b9 A2 M4 W: \

7 n6 Y: }9 e, p& }4 ito setup
5 ^9 H0 h; b/ ^; y. `; }3 H9 T7 U9 M7 Y
ca

- \5 e- ?0 t. |) H
9 f0 F. C0 }" P0 c3 w8 u% Einitialize-settings
( ]; Y7 b  f% h
( {$ V+ J+ i* o5 t3 w& t; i
crt people [setup-turtles]

& I' g/ L% l4 H, U; n! \4 V: Y  [; d
- I( ?( x% W" A) Z7 M- Jreset-timer
2 E* P9 J% i" d7 q
* {: F" s; V* T, s8 _  c
poll-class

/ Q* `& W* U2 ?$ M6 z8 ~( v2 C. o$ v- s+ e. P  U9 b
setup-plots
$ Q# X7 R$ w! I
/ v9 s* j+ _; S! x8 z
do-plots

( \- l% L1 x; C* Q1 p1 z6 ]end/ {) t6 g" u* h5 y
- i) b+ f$ x0 Z4 S
to initialize-settings
* ~& v1 b( [5 U5 b9 U+ n/ K& W0 e( Y# ^( S9 h% Y
set global-reputation-list []

* \' \% O- j. c- \
. I3 k+ Q4 {* n6 [( Y5 Iset credibility-list n-values people [0.5]

$ O2 H7 O( b5 f  w# C% P; J& |; w' u
set honest-service 0
# {2 \3 ?7 G8 P5 `* P. V
* D0 B  K9 b0 x2 x! f. i# z
set unhonest-service 0
+ ?6 X4 ~! m" a# z

: ^' U  B6 K3 r! l, Q/ r. vset oscillation 0

6 r& M3 Z' F0 |4 s6 g' \: h+ I" W
set rand-dynamic 0

$ O! R9 n1 }# cend
. Y3 O9 f% T! k& S; H7 ]( Z( p
( s+ ]' H0 L) w" q+ x+ D; ?$ wto setup-turtles
3 o+ P& U5 r' v2 m& aset shape "person"
$ b( M' }4 V7 x& rsetxy random-xcor random-ycor1 Q+ {2 g9 A; h. V# V' u
set trade-record-one []. a7 B- i9 t6 j3 n
- W8 Q9 i+ k0 `) |1 P% `, H
set trade-record-all n-values people [(list (? + 1) 0 0)] ! X5 B/ }& U4 [+ N

  }/ \6 T+ u9 x( b& ~$ F$ B# bset trade-record-current []8 @5 Q. K6 t0 A! h3 v! G# p. g- c
set credibility-receive []
  o. i" y3 ~: {1 A- Z- W& Zset local-reputation 0.5. j! l  Q* C# L2 A1 @
set neighbor-total 0
0 m, n- D( l/ l4 uset trade-times-total 0
0 [4 H& \5 A0 ?# H' E4 mset trade-money-total 0- B" U, W0 x1 Y8 G
set customer nobody3 m$ E( j+ X) E
set credibility-all n-values people [creat-credibility]. V" d  H) g) _( q6 P+ t
set credibility n-values people [-1]
$ {% d2 C( R6 I0 P" wget-color# O7 A$ u! W8 _  _( n
9 w' X( a# T0 `+ U1 T( `9 b
end4 w" j$ K' p0 s$ w6 Z$ |
+ c5 P: V- X9 V9 ~
to-report creat-credibility+ C* N+ G7 e" s4 R
report n-values people [0.5]
0 z8 L% f# o4 Z( V. Oend
9 m4 ?6 O& U# L& I( a" A; d
* y4 B. y9 H$ Q& Y. y, z1 Vto setup-plots
  f& W$ X& _$ N2 G2 P4 @  b) h! a4 S4 _
set xmax 30

, V0 M/ @- b' ]) I/ i1 L  ^# B
: `2 X/ M4 ^* V* p$ j( P/ r2 v) Jset ymax 1.0
, S9 E' [( b0 z, [0 j

' k% H: ]+ d8 i$ [* Q6 Hclear-all-plots

' S% U/ ~/ [" N1 Y2 m! i
6 N; }! t6 y6 l/ Xsetup-plot1

& F1 H: S9 C5 [2 \/ d4 s1 t
0 m3 `9 Y5 B/ X& |setup-plot2

# r, S! ~- y* W/ i/ ]( v- D) R5 \0 X* Y0 x! `! p
setup-plot3
! h0 f6 B" I; H
end7 a1 a0 `; {' _- p
6 \7 d% c( r7 e" p* t( B3 C
;;run time procedures
! P/ I% M- ~! b/ Y
& m. l& [1 p8 z$ d% I  Kto go0 S( E6 H/ e- Y9 h
- h& [( t! Y# O; z9 Y$ {7 ?
ask turtles [do-business]

! o- Q" R  {1 a5 Y  |end6 l# h$ }- S- n- {

  M0 W- d9 A+ \: a: R# `& n3 wto do-business
" c  g( X5 z, F; E3 K

1 j) A" O" t; T% H
. V7 I; Y$ ~( _rt random 360

3 r) s5 g( B# t( V$ U' J. p9 K+ [8 e( o7 Q: g# w9 L7 i$ \+ q$ D
fd 1

+ T" H' W) L. J. G
% ~4 |6 `. v+ V& l# |! S2 Nifelse(other turtles-here != nobody)[

' t1 C& L, G2 H2 g" A  h5 h) O# ~# f) ~) C7 t7 k: ~
set customer one-of other turtles-here

8 f: n# o. G3 F- @, A7 y' M  A4 D/ y5 p- @( x2 q. a
;; set [customer] of customer myself
3 p# o% p7 U+ j$ l# M
' _2 ?* c# ?" l1 c  Z1 }7 P0 K$ c
set [trade-record-one] of self item (([who] of customer) - 1)
7 ^% t" G7 @$ I  y1 b4 _6 E[trade-record-all]of self
0 C- `3 w: N) L# C; _9 m5 Q) l/ s;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
" N' l3 K3 z7 i( T# z2 {' ^: |
+ a! s+ g5 a- K. R" N4 Y
set [trade-record-one] of customer item (([who] of self) - 1)0 G$ w! C) ~% ?* n6 G5 {
[trade-record-all]of customer

" }3 s( l6 G& [1 t: t4 O" p  Z4 v5 p& x% H2 P! I
set [trade-record-one-len] of self length [trade-record-one] of self
5 |. k) }! t+ S, P* `. P! S
& a8 I& Z% X" o2 Z9 d
set trade-record-current( list (timer) (random money-upper-limit))

$ w" S* y" A+ \0 y  P
! W& |7 p+ Z9 w  w& \; Y( Rask self [do-trust]
1 L9 Z; l$ o& j;;
先求ij的信任度
1 \* S0 z4 ^& a/ V: H
  O8 x. n; e) o' |) V3 s  g/ Yif ([trust-ok] of self)
7 z' o+ d! v& z2 J1 \;;
根据ij的信任度来决定是否与j进行交易[" n% X3 E7 J- A, y! H: _) W5 `$ `
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
2 @) D8 p' ?6 P3 O7 @) P; [; ^, ?$ W3 S7 }( S; H$ p
[
/ J9 g9 ~+ S, i) R
0 P* F/ |/ H9 C0 G
do-trade
9 J" }1 Y6 p" F9 ?# A' X

( d1 u6 c' J2 ^8 d8 J0 nupdate-credibility-ijl
' ~; k9 a2 r8 F
! i7 b4 S4 K4 [, o7 I" q+ w9 ^
update-credibility-list6 L( F) J. B6 J4 C3 R

' z8 k8 N  f0 g' x4 ]" u7 m; K1 B* Q, F! C
update-global-reputation-list

& F# s+ e9 K8 \1 e' t  R- G, Z3 b$ m' F( G& x, e2 {
poll-class
7 g7 Y0 m0 u) _; A

- L: G+ _$ e! A8 h6 Mget-color

' B; s, t' \) ~! ]1 x
1 X3 p* K- k; U0 x: O6 E]]
3 i# m( l; I0 K- L
* ~5 }7 G4 y, P;;
如果所得的信任度满足条件,则进行交易( Q! x; ?; ^/ k% q& j3 y$ U

9 X( k# o! l- u/ u[

' S2 t/ z# {+ [3 t2 ~
- x2 s) E6 C3 l4 i0 u1 rrt random 360

8 [4 U) G& J9 d* |. c6 y" ~0 _, D7 I6 s/ ?
fd 1
  `$ b! K- J" C7 \! p
3 `  Z  e% f* i' C4 y& \- \
]
& y4 y# z4 n- Y5 |/ n  ]
; A! o6 l5 _, i1 i* U& z
end

- s2 d; I: S0 h3 P( v9 A6 O4 ^7 x) T7 p7 d; ]- j% l
to do-trust
/ W& p, U6 ^* xset trust-ok False
8 [+ ?! |& J; D! u* d- ]. S
9 q- U1 x$ ?1 o. u" ]
9 f) G/ f0 y! t* e# U- r3 R
let max-trade-times 03 T7 m3 }. C! y; v& L: ~
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
$ _2 L! T  _* c3 U: V. a' e, {/ Hlet max-trade-money 0
3 H8 ^+ ~0 Y& [! l: N* ]% xforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]8 l, e' n1 R1 `# ?) d
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
% Q) y: q* g  B0 k/ Z
% P' a; ]" {5 ?1 b) o  z

" E% m3 Y7 K$ Y4 yget-global-proportion
* u$ [3 a- m8 }9 X8 y; z, Ulet trust-value
% p, F% Q5 W) ?  z3 m! H2 nlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
* ?# V3 n& u! d
if(trust-value > trade-trust-value)0 y( k5 B8 H9 I0 ?
[set trust-ok true]) p3 Q: v/ _: N/ F: A! _$ E
end
+ A0 \, b( b; g% R: z- f  s6 E8 M" ^. c8 G
to get-global-proportion
$ |' e- Z" A: M* p2 Xifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
5 R9 _& i6 {' @% N) \- y[set global-proportion 0]
  e' G/ T2 h4 g& E# j2 f$ _[let i 0- w+ O0 Y8 C2 i" d/ x" K) R9 I
let sum-money 0
, w" g  W: c3 Q, I$ ]* \! ?while[ i < people]
* y, k* s& s: w: ~4 f[4 T( y  p! ?# t1 [3 ~
if( length (item i
3 {- x: t0 N# s6 G' F$ n! R[trade-record-all] of customer) > 3 )
$ l. `1 [. J% t3 ]/ [" I9 c
[9 P& T: o# s( s: T/ E
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
" i' E, O$ O! W' ]' B" f- m$ ^]( D# [6 b! `6 e6 h
]
3 K* h) |  O- |let j 07 P: T9 ]) _- G, \& g
let note 0
4 u. D, N' b# S3 gwhile[ j < people]. k6 j! q! Z& S* o8 q2 V& X) C& d
[
8 ^* z. b5 r( Z  O1 z- hif( length (item i. m; a2 A$ W2 c/ V% z( N
[trade-record-all] of customer) > 3 )

6 F& L7 u! A% v! |[
) o7 P/ r( J' b9 uifelse(item ([who]of myself - 1) [credibility] of turtle j != -1): x% `7 |& L, d: Q0 }& a
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]* u6 W1 I" Y* u
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
: _: e! `/ ~+ M2 J9 B' {7 ^9 M]
% r/ G8 y. f% I! b! k3 f- A6 I]% N( U/ j8 w; v( L1 m
set global-proportion note
) U$ r4 r* e& m3 f6 k: c# b]
1 s( X6 E& s; f: y  l; O- Yend
7 Y! r8 K/ I2 T1 Q) ^8 w% W3 ]+ K+ a; c9 Y
to do-trade
' m" [& q: M% L0 O6 W: z;;
这个过程实际上是给双方作出评价的过程
) T6 U5 J' X$ n) @4 |+ ]set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价" }+ j% w5 N% w/ h
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价  v' X6 t! {0 ?
set trade-record-current lput(timer) trade-record-current( {  l; n$ s* q7 s+ V
;;
评价时间  D* E: w6 {8 o' J( N# l
ask myself [$ y) w/ N4 s2 A" t! V$ d, ~# S
update-local-reputation
$ b( {3 ~, ^4 H) K# bset trade-record-current lput([local-reputation] of myself) trade-record-current
- X1 O5 B  t2 i) }& ~8 s! f! Y]7 T) L2 C7 E) r4 [. k$ X
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself. ^, T' T8 ^/ c. k) ]0 R+ f
;;
将此次交易的记录加入到trade-record-one7 n$ T1 z. ]8 X8 {0 P: K! j" b4 |# ]% C
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)  \- [0 n3 a4 X
let note (item 2 trade-record-current )
2 W% K! e+ R9 Y( o- f2 aset trade-record-current
6 y, D- W$ W! V5 t; C" h(replace-item 2 trade-record-current (item 3 trade-record-current))

" C: a9 ~: g6 z7 b# wset trade-record-current2 h6 ^( X  r9 K3 |/ w
(replace-item 3 trade-record-current note)% ~# o# J! K9 w* m- }
# {) V- y$ N3 z. L% x

2 @3 V7 u& {, K/ r2 H( m+ T% U6 L' zask customer [, d' R4 O8 m& I" E& _
update-local-reputation
( H/ p9 g  Q* q9 e+ z5 y! e' eset trade-record-current
% H$ K) h  I% Q- Y7 b(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
# M- k+ e- \9 ~+ z
]* L! x! q% t4 ^  S% Q* f# O5 p

3 N+ Z4 A- R. w2 }. P0 m* s

( B! b+ ?' _, w- |% zset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer8 n  f. n+ b) B7 e# ]& T' [

* E- c. y7 D5 b: u2 Z8 hset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))0 R" ~! C  B/ h, o7 V
;;
将此次交易的记录加入到customertrade-record-all
$ H: w$ x7 S& x8 W, a: F0 Oend
: G; q) l+ w. Z3 J# h
/ w- Q) t! c. Y! `2 i& bto update-local-reputation; y% H6 e3 d% G# f
set [trade-record-one-len] of myself length [trade-record-one] of myself
, A) g* O9 l8 \! h# y# i1 P8 o  c" I" V/ ^" `& C
2 G" r0 \, C# A) p. K1 k
;;if [trade-record-one-len] of myself > 3
+ A0 M4 Z0 |! s9 e: L3 T
update-neighbor-total6 q& n) k+ A! i4 j+ v, c$ T% D
;;
更新邻居节点的数目,在此进行
7 f, S9 \+ d* a" F9 q% tlet i 3; @* r# D4 F+ S8 \# U0 h
let sum-time 0- _2 D4 u; E5 p7 A
while[i < [trade-record-one-len] of myself]/ q7 p! w! k) j  ^9 @6 S) \- y! c
[6 o. C8 z) ?) z' Z; N  Y
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )( I' f3 f! F  c! [! n1 I1 r
set i; T$ w. B6 ^' m7 s8 C
( i + 1)

8 ^' Q0 x& K! V* b1 }]
3 c2 o0 f6 [7 ]let j 30 \. r+ G7 K5 n% o! ^
let sum-money 0
. ~/ g5 ]) x, N' l% ~while[j < [trade-record-one-len] of myself]
- t! B! o# @1 q% X[
$ Q& K$ A2 P2 t" @$ w8 G# W1 vset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time): l) W8 }  G; w' J
set j4 C# f) J6 S1 T1 @+ D5 V
( j + 1)
- v$ @2 ~& x  c8 d* L
]
3 p9 m; [1 p' O( k* ~let k 3. `) v5 b+ O- \# h" p1 z# X
let power 0
7 D- e/ C# p' ~! |$ |2 Tlet local 04 c0 W0 H+ }9 B% a
while [k <[trade-record-one-len] of myself]6 R; F8 D6 o8 d/ M! q+ G# M/ k5 ?" j
[
4 i* m# e, L: H3 ?: vset 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)
* [6 ]$ A" M+ o$ j6 b! Uset k (k + 1)2 q: `. p4 d6 h& l- j( T
]+ v3 a3 {3 N; f" B3 i
set [local-reputation] of myself (local)
6 |  \. p% @" x% I" z- Rend% f8 p6 a) I4 |2 ^( n
- ~, }7 n& y7 m1 A5 K
to update-neighbor-total2 s* ^1 M3 ]2 k# Y

& z' J0 m0 [0 n# |if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
) D% n; F8 W4 }9 j. n3 K/ ?
6 V; i1 T4 P, e4 Y! ]9 V
  ~; O; e  R$ E2 a" J
end- n" v/ M% E% |" S
: h( ^, a$ F/ X
to update-credibility-ijl
5 e/ S& L" \( o" C5 b
7 _# U. N+ h5 r9 j! _- X8 A3 {;;
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。  Y! |3 v- r' X: @. P3 K4 ^
let l 0
* s  }1 w$ `7 P$ I& ywhile[ l < people ]: P/ W, {7 D9 u7 g" l- L2 V
;;
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7 T. L, J5 l0 c6 u) S
[
& x" D4 l% K% r4 c* Olet trade-record-one-j-l-len length item l ([trade-record-all] of customer)4 e0 v9 S0 Q0 k
if (trade-record-one-j-l-len > 3)
' w9 N  K  v1 i' `  M  g2 ]! d' O6 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; l: p% E2 U  }, x
let i 3
1 h( _8 o4 h0 e" k  V( K( A$ J2 elet sum-time 0
3 i: p7 N; z! m: h: W3 @4 D# i9 vwhile[i < trade-record-one-len]
1 a* v7 _) [8 d; h. @[  p& _$ B' v4 {! O+ F+ @
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )" M+ N' n" S) R0 l" }  O
set i% t6 F5 H& ]' n3 E
( i + 1)
. O( Y  P8 r' k& c
]
9 T" D4 F$ M' W) ulet credibility-i-j-l 0: F1 o: i! A/ R7 p( o+ W9 ~
;;i
评价(jjl的评价)" [/ W( ~8 L/ |
let j 3
* o7 v! P( ~$ h5 A9 i# y8 k% |let k 4
% }4 \6 q: K; X+ D+ z% Swhile[j < trade-record-one-len]
0 g: q& [/ G& l* l4 {* R6 M9 A! h9 i$ t[
6 e& i! v5 P& ^7 C% ?2 ewhile [((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" j/ a% a( r- [1 q3 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)
' [/ D' O; H3 L# M! w  a5 H7 d7 _set j) W; T8 M5 m7 ?1 s4 z/ f) Q
( j + 1)

; v: E+ l2 |$ `* h- N" A6 W# Z]6 ?/ x. Y7 s" G' @% t6 y" W
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 ))5 X" j: B- P* G) _

+ H  b' d3 {5 a: s; n
4 ^- d) D! W6 L4 ?
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))+ }7 @; Y- t# H! A
;;
及时更新il的评价质量的评价
' i  I+ K1 d- mset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
$ [' G% A% H2 \8 K* m6 Aset l (l + 1)0 P  Z# H2 u) @& c
]: u% o( H9 r2 E% z$ Z% l
end
) i2 u/ n1 Y8 l" ^" V
2 A! u/ `% \8 ~+ Q5 }) Y! u& Rto update-credibility-list+ s5 |: n! S0 ^" r; [& ~5 a' K; p
let i 04 f8 l( F: I/ Z! @
while[i < people], {/ G# l# p2 R5 Q* _
[
3 {( e; s7 j1 S/ x( w; _let j 0
  `1 r& y) g. k* v' L* Slet note 0
* b3 D! K# i* W  alet k 09 G1 R3 o4 L8 w* ^, b6 I
;;
计作出过评价的邻居节点的数目7 d4 x$ q2 [! [7 T9 r* L4 n3 q2 e7 P
while[j < people]
3 Y6 i( F5 E) Z) Q/ c, k+ f[; p" @' c- r  h8 a4 L/ v
if (item j( [credibility] of turtle (i + 1)) != -1)
3 r$ S5 K4 j. X7 v) ~# G;;
判断是否给本turtle的评价质量做出过评价的节点- F& P6 _5 D: u. U  D. S
[set note (note + item j ([credibility]of turtle (i + 1)))
2 ~0 m4 L. M6 g5 ]8 `;;*(exp (-(people - 2)))/(people - 2))]
2 o4 i# J6 q& C, L2 b
set k (k + 1)7 f4 `  G7 Z" F' A$ _- ?  \$ u) A
]
: x3 s' s0 M4 O& tset j (j + 1)" v, q- M" n* N/ Q& j' m' c
]( c0 F3 D8 c2 r8 I) @
set note (note *(exp (- (1 / k)))/ k); u* K, i4 j+ Y4 i/ j- P& }' b
set credibility-list (replace-item i credibility-list note)
. V3 q5 {- f; Eset i (i + 1)9 M0 O' Y9 g/ ?
]
- ~& u& U3 Q5 x3 d) ~: xend  S5 j! R8 }) Y1 ?  c

( A0 \% j* e4 U4 O. Hto update-global-reputation-list1 `: D/ E) Z3 p
let j 0* m; P, K' I8 w  l* I2 ^, M+ I  |
while[j < people]
4 d: s; b- _4 o1 P" P! v[
5 x" p) {8 X! J* E& hlet new 0* H0 X% c3 S6 Z1 }
;;
暂存新的一个全局声誉
4 U0 N! S! |# |; N* Dlet i 03 _# I' d5 Q" T, P1 m
let sum-money 0
6 }; d/ p) n5 @' Y& c. clet credibility-money 08 s  h1 `* S6 A+ f0 T
while [i < people]0 e" C# e9 |2 F5 W
[# n6 ?0 W& d% R
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))4 \/ |0 y, P( E, R  ^. W; O
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
. V4 s5 a/ V! \set i (i + 1)
0 }$ J% j4 n2 e; B6 a' k3 |]
& V+ D6 O+ l$ e" g; b/ `7 D; M/ m  Ulet k 0" v- {. I4 N( C: u
let new1 0
9 y9 u1 a# v6 E4 s! v) Kwhile [k < people]9 |$ W' y, K; v! D( O, d3 t1 C. C
[
3 V+ m* k, `1 y" {9 g8 Kset 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 V3 J" ]! h8 @: Yset k (k + 1)* n! H9 L# b" K+ |  J6 k5 D9 U( Y
]
8 W/ }' P) f, M  Dset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
- x+ g& f2 Q% Z2 Zset global-reputation-list (replace-item j global-reputation-list new)9 v7 k( `3 T6 f! y
set j (j + 1)2 d" F6 R% M3 x, O5 i
]5 R. q, z0 p2 P
end# F" f8 u( X! H

. z8 z- Y9 ~7 l! Z" g
0 X+ l, q0 C: z! k+ A* T: x6 S& @0 W; a7 u( A) `8 W$ X/ d
to get-color
3 W+ f* F6 B$ s5 ?4 g8 p' ]" t& I; ]9 P2 N
set color blue

; F( k& u/ [6 E( D) C" p0 send" Z( Q7 \  n) p
4 k; n+ K6 b1 |8 V
to poll-class& }: b$ d3 u' b& z) a$ V. k
end, w4 U: I9 W) e6 Y0 h

% J' W) J+ d+ R, ~to setup-plot1
+ {5 w/ r/ R  `3 P3 _/ l8 W+ [
; ^4 Z  N- _! p. kset-current-plot "Trends-of-Local-reputation"

3 J4 p  R/ j* s1 a, L$ i2 h
2 W+ d# s' p& M' a9 c' |set-plot-x-range 0 xmax
: G9 N  v* N4 p1 |% F/ u2 o1 }
! q/ N! [6 U, N" t. [) e* R1 Z
set-plot-y-range 0.0 ymax

5 @: D: V0 {/ U! oend- \4 c1 h0 J4 N- C

: K) m+ ?+ |- L/ }4 Rto setup-plot2
, Z! j  s9 j2 b9 @6 H7 x  \) ~6 `- l; X4 N
set-current-plot "Trends-of-global-reputation"

) F6 ~" z& j! ~; z3 X
7 F, q& |% b& L+ W7 j# ^set-plot-x-range 0 xmax

, S4 F" m# h' A  j0 Q: p1 t! x& h6 b9 f3 |; g9 ?
set-plot-y-range 0.0 ymax

$ ~( V. e' ~! ^) e5 P( c4 Q+ |end& M1 z- o0 U, s: `$ m$ Z' Z
- y8 h2 {3 l  u
to setup-plot3
2 l' Z, Z, D* n2 g4 d. b* t! h
; b) o9 A/ g9 rset-current-plot "Trends-of-credibility"
9 U8 f. `/ Q  c8 k) Y. _( T

' @% G, O0 ^: w: r4 {# oset-plot-x-range 0 xmax
& Z4 q$ O+ ~1 t+ {  h8 I
. O2 M# W2 `, W; w
set-plot-y-range 0.0 ymax

+ [6 f$ I3 s0 h; Q% Pend
- P8 P/ _1 F5 H) d9 ?3 ~. m0 h. X- D. Y- a* p; w
to do-plots5 u, \/ G: F0 v; }
set-current-plot "Trends-of-Local-reputation"
  q: U" V  Q6 D$ P' F5 j$ u" R: z) Zset-current-plot-pen "Honest service"/ P! Y& Q( F, h# q0 [7 V
end1 ?9 {8 q( v: J
; b2 }0 \  R0 `9 H: C
[ 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.
" _4 n5 m/ E/ S* n3 Z" I: U1 H% B
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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