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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:# S7 l! c- b3 W2 ^3 E' q$ i# T
to do-business
  Q+ n' p3 Y4 v5 t* N1 t6 e rt random 360( `6 ~) s  t$ K; X
fd 1
0 f0 y! R* T$ Z* {; f ifelse(other turtles-here != nobody)[5 `6 g- ~( i) Q/ [( s
   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.
4 C6 j- b) I% O5 X# t9 b4 i/ B   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
7 C" r6 X8 U; D; t$ K   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
9 D7 K3 d+ P& Y3 w2 a   set [trade-record-one-len] of self length [trade-record-one] of self
' |( W; h7 v, l. E* C. X   set trade-record-current( list (timer) (random money-upper-limit))
2 ?! j7 M' u- c& w$ M' x4 i( X9 V# h1 l
问题的提示如下:
3 P* j- O: ^7 o0 L5 M4 b- Q: M* K; y2 |  f+ y4 G
error while turtle 50 running OF in procedure DO-BUSINESS
: s& m7 C, L3 e  called by procedure GO2 S0 y/ f/ `$ f
OF expected input to be a turtle agentset or turtle but got NOBODY instead.) S2 `8 d% D, ^9 Q
(halted running of go)6 I- f+ m8 [$ j5 J+ R' ~, F

, E: h0 N) j) r, p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~~$ w4 Z) B* y4 u& J! {9 ]# r3 c
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/ y+ Z2 M' C1 `0 O
globals[
. u# L+ D7 y! ]# H$ @+ vxmax' H' h6 c" W2 p$ Y  B% C
ymax9 G: O4 h% @" n1 Y/ m' i, F
global-reputation-list0 [) a- A; s7 n  B
0 [* L% _( b9 h  f
;;
每一个turtle的全局声誉都存在此LIST. n9 P1 z2 Y# X/ S# X& J& i4 \9 d9 ~# C
credibility-list- T2 N& P- y/ d( j
;;
每一个turtle的评价可信度
" O% R5 i( K7 thonest-service
6 Z# ]: o2 u5 m  ^# \unhonest-service
1 y1 z8 I! `+ Noscillation
# U1 p1 B" C+ t& Xrand-dynamic
0 \" A2 K1 i6 `]: M2 l' J( @3 ^4 V2 @
0 m/ }+ s8 I' L: @# {8 N! R
turtles-own[" C/ {. U- J. J# {! W
trade-record-all
  a( o* m' M8 J' B! \;;a list of lists,
trade-record-one组成6 t, |: |0 q& A
trade-record-one
6 N& y9 l3 I6 O: y( Y0 Q;;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% ~3 c# k9 W' W! e4 Y
! A; n# a& m  f* k: j  Q9 v;;[
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]]! S" d* j7 h: @# y  X  T) Y
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]
$ \* i; |- L+ _3 y5 t% `" jcredibility-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
$ h+ c3 @9 H2 kneighbor-total
1 a, e% W( E1 s# |;;
记录该turtle的邻居节点的数目- i" D+ u- M% \% O7 |
trade-time
( o3 V1 F! P1 X& f! w" i* A) U;;
当前发生交易的turtle的交易时间
- w' x$ G# F2 M  g$ j; yappraise-give# p  E( q" d& o3 R6 U7 Z
;;
当前发生交易时给出的评价2 H" U2 W, y, v
appraise-receive
9 \5 B- k; x. l- o5 a;;
当前发生交易时收到的评价' i: Y* T. Q# v- A5 R* H! ^
appraise-time
0 \9 P5 w% D- X4 O8 q/ M;;
当前发生交易时的评价时间
, U  R+ |. ?# G! Y) o) N6 Q  J9 ~local-reputation-now;;此次交易后相对于对方turtle的局部声誉
! [$ N5 }4 _6 l% l0 gtrade-times-total
, z: n' M# I6 d3 F6 r& W0 N( @;;
与当前turtle的交易总次数
$ R4 f9 D  W' e, G8 ]& A: btrade-money-total
/ U, o* k. q- Y: e;;
与当前turtle的交易总金额
# d! c0 d7 y% L, y9 X+ Jlocal-reputation3 b7 a: M2 m& ?4 C& M
global-reputation5 Q% K( X- A" ~' J& @
credibility7 A; {9 G: g8 a% w# e
;;
评价可信度,每次交易后都需要更新- @6 d9 F' H7 T0 T7 Y4 g0 c
credibility-all/ ~9 V! m" z% c  G$ G$ V" {1 L9 ]. \
;;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
0 n% \. ?5 g; P+ |
. f8 F; t. o' N5 e1 T;;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
0 z5 o1 t% ?# A& S* Jcredibility-one5 D( z( f1 }2 k/ k& w
;;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$ P  q$ J# S. {( E6 P
global-proportion
; f. H( V% G! K4 u) }# {" xcustomer
( R% V  B6 B$ F$ D! X9 F* ~customer-no( @* d3 V7 _1 y) m
trust-ok. q4 \! f) a1 h0 ?  y) @
trade-record-one-len;;trade-record-one的长度
( I' a  [5 `- m' X' m1 l]
% K  x% ?. U1 w, A
7 q0 B0 t6 t3 }& Q1 t* u# I;;setup procedure; Q' i/ g$ t0 q& z

' `# h/ P/ F! Kto setup0 B/ I; U! x$ m# d

* K# j' d/ y5 w$ Uca
* j- w* ?& O6 O4 X8 ?/ f* Z
: d3 O# o0 D# `( h/ y) E/ e
initialize-settings
( Q: v' z) m" j

6 X' k1 b/ t, q! n" ?2 y& l3 ~crt people [setup-turtles]

/ ^* p# k0 V' s. g9 C
+ e& y: N3 W5 Z3 g" g" N; X1 xreset-timer

  ^2 _# @0 M( r+ p% u
; V: I2 _( A% o! [7 A, ^! k; qpoll-class

! `% G# I# S! b5 @0 Q9 Q
$ s+ f# E" Y! r1 |' U7 E* qsetup-plots
& d9 U8 P' M6 Y- ]* M0 H

* @% ?7 s& l  W% J' Ddo-plots
9 g8 r1 X4 Z. O3 u7 i
end" _" K7 F& \$ h0 A& j, n3 P

: W) |5 T/ u1 `; w7 b0 i+ oto initialize-settings
3 Z- @$ J" _2 _* T( V
7 Z! Q: T1 y/ ]2 w8 K( X) `set global-reputation-list []

$ `- p$ Y4 H1 d+ K$ {& U& P; ^4 s6 _1 L& p+ H2 Q- P
set credibility-list n-values people [0.5]
8 A, J1 Q" G0 B& ]
- Y1 L8 G5 z8 P3 D" a
set honest-service 0

% k1 j2 Z; M; a5 K' a( u
* J' V* f( V  W7 {2 mset unhonest-service 0
( Q4 ]1 k! v4 n
! G: m( F$ D$ ~4 }5 {. j) l' O# V9 ]1 f
set oscillation 0

! v" A) W+ I( {: l
! f, O' ~/ z; q& H* dset rand-dynamic 0
- P. _. o: S4 E
end
9 X9 I+ v0 G; ^- b0 K7 D: ^( V; H
7 y* O% L* q# G$ [+ {to setup-turtles 4 b: E: T" J, }6 M1 H$ p
set shape "person"# c4 l) r) E; V% I# q% d: e& h! T! L
setxy random-xcor random-ycor2 e" H6 B5 c( B8 J/ Q
set trade-record-one []$ D' z* a, H' B6 {0 h
0 G( r6 c7 S# B0 h4 G7 Y
set trade-record-all n-values people [(list (? + 1) 0 0)] : ^2 j/ s% `4 m7 O2 r# L8 Q
* ]7 R9 m! X4 @9 _- y" X  I
set trade-record-current []" u2 N* h, A8 G$ j
set credibility-receive []
2 q  n5 E% T7 ]7 R9 d) T% A" u9 Eset local-reputation 0.5
" u1 o% C9 Z8 K5 s. q" o8 P. Vset neighbor-total 0( U' `9 X4 Z% s
set trade-times-total 09 m- G: ~) {; v! X, X# `
set trade-money-total 0
, m7 M6 J" m0 Oset customer nobody* `' ~* U0 d$ y. t$ x/ s
set credibility-all n-values people [creat-credibility]
- ]! v8 j$ b6 P$ K2 N0 @set credibility n-values people [-1]
  A4 o( x7 A# `get-color9 z% j. T& y' O: C2 t) L9 Y

0 o3 {2 O: j/ e  K( _) A% {" {' Cend
% J6 `. Q5 Z6 L3 H) m7 v8 Y. \2 t
* I% m- M, X# d! qto-report creat-credibility8 C5 W) p; i- t2 U
report n-values people [0.5]. z( m+ B; ^2 M/ g. X, T2 |
end
5 r4 N" u: V/ J3 R5 I" w9 R  A" E* c
1 m5 s& Q6 B4 kto setup-plots* w. r5 M( ^* W; `
5 b/ v4 L1 T- `# O2 X0 v
set xmax 30

# e! Y, n! j+ ?+ o$ i) F; X7 _0 e) H, T2 e5 W
set ymax 1.0
' C  R1 R5 F- b4 D& {. t% _

  \9 v% G/ u& I4 c4 j- x+ nclear-all-plots
% c( i7 e) v& q3 W
) H* `( N( z$ H% G" S4 |. Q; i+ ?) i
setup-plot1

1 c2 @6 _, k. M2 N; G7 r' X9 L( g. A: \! C/ V
setup-plot2

+ G$ S+ S" Z/ ?3 T: ?2 }9 P6 a
  d! }# P/ k4 m; ]' e1 Ssetup-plot3

# n3 V  Y0 ?! I& q9 }# k, W. r+ r* Z. Bend
( _/ R9 J7 H# A  [3 q2 L) a1 W% d( p
;;run time procedures: I& k, n$ U- W- F0 m

; P8 C$ p5 ^- l/ F1 q, [to go1 {7 _8 W- |& m
. M  Z( H- _3 Z# n) ?7 O- f
ask turtles [do-business]

- Y" f" S4 }0 ^# w+ A& e+ T$ D6 ]& Nend$ `. ^% Q/ O6 ~7 N6 F
. m) U. Q5 m/ x5 v
to do-business
$ N6 Z- X* K7 T1 a
6 ~2 \- A, T; D& [

8 I' I- s2 [, m6 ~- Frt random 360

/ M( D1 P0 D. K. s* G$ M3 R$ [) d' W
fd 1
$ g4 n$ H8 U# d5 p3 D+ {

6 z5 G* ?$ {$ Y7 h! |4 s1 Iifelse(other turtles-here != nobody)[
- Q4 J4 z$ U( O9 O. ?
4 `# B4 E' A7 D2 m
set customer one-of other turtles-here

! {2 S6 H5 A! o$ i/ y. U6 o! X. n( p* x7 O9 C  d2 B. c$ B
;; set [customer] of customer myself

1 i. U8 G/ X. l* w" F' D; \8 j/ z( H2 T1 N
set [trade-record-one] of self item (([who] of customer) - 1)
9 B# M+ m1 s# v5 ]! C) G9 `[trade-record-all]of self3 C4 s7 n# M7 P1 I% R4 f
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
7 `6 |6 T8 I* r; b3 p( E" S2 b; ?
! r1 k3 n' j7 X& t
set [trade-record-one] of customer item (([who] of self) - 1)
  F2 a& ]5 z1 c# H8 q( _[trade-record-all]of customer
/ j/ X1 C1 ]! |2 E3 n# y

7 n9 s7 H3 |2 F) wset [trade-record-one-len] of self length [trade-record-one] of self

; m3 |7 e) q2 k  }6 k7 b/ [
  t6 x+ }) c9 b4 ^: P+ G) Cset trade-record-current( list (timer) (random money-upper-limit))

& h  D( ~8 Q  A2 C; k/ E) L7 a6 Y6 a4 R
ask self [do-trust]
2 g0 \) ]0 Q& ^8 z% Y  Q  D;;
先求ij的信任度6 c# P1 v: P# i! D4 c
5 H8 {9 C6 r: E2 U. i8 U) |- t. v% W
if ([trust-ok] of self)9 V  O% v4 t8 J8 M6 L8 H0 S
;;
根据ij的信任度来决定是否与j进行交易[
. {! w6 y0 ]% task customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
3 |* l! e* `8 ^! a+ e1 r- r" N, r# U, c0 c
[

1 ?$ b* H5 \. q6 c
* c; z* Q2 r- D  F8 q  Jdo-trade
9 l! N) E1 g1 J$ I. D1 |

4 ~# |0 \+ t+ a1 M& s, K9 Vupdate-credibility-ijl

/ b; |1 ?& o  @* x0 W$ B& V3 ~( b1 G% x' A: E, ?
update-credibility-list, k( j$ H8 o' B1 B) d/ Q8 X
" w' h$ s% f. N7 H* i2 ^. t! _

* w, z% r* M1 ]! z: ^1 r9 `, Xupdate-global-reputation-list
5 a: ]) I' C& `! y

4 I5 G- b- D3 L* n' J  X' l; hpoll-class
4 m* R  L* r; I9 Z; K1 _  v+ @( f

5 P+ r3 G, G, B( Pget-color
) I8 O/ b7 U! P: c

% c  k# u9 m+ I; J1 M& u# y: x]]8 ]4 T+ s4 _# h) N
' B, T8 [; y  P) G
;;
如果所得的信任度满足条件,则进行交易. d4 B; }. M' ?& i

; M% j! d- ~* e! q0 U[
4 I. _+ M7 B+ w; E2 y! ]

7 c' y& k' m% q+ k# C( Nrt random 360

& R% g8 O3 X! t, g
+ O  C1 v4 B! D5 {$ R! B- R4 mfd 1

+ n) C8 a9 [. h2 N5 Z9 g% W/ K$ r9 h7 e/ e
]

; I4 ~# u# i% @  T) a8 W
1 B0 B  P6 _& p+ B  X8 F- Xend
& W3 K& c7 v1 F: p
+ Z* m5 ]8 Z+ q- ?0 y
to do-trust
# g4 Z7 ?+ Q; E3 m4 L4 Uset trust-ok False
  M# u5 d/ E) D) Z5 @
5 o0 v% B0 g4 L9 Q4 Y
3 ?3 o, v8 I& u% A
let max-trade-times 0
- ]4 d6 H' _5 q, k/ P% B( uforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
: A" C9 o" B. }3 L9 e! Ulet max-trade-money 0
( S# S. d1 ^/ B$ ?9 {foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]+ S! L" s: p+ h/ I' C& n3 B/ u+ S
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))7 M& J) h- b: S: p/ n" o# G) T

) I, @% u& `: k+ j1 e8 Z5 v
& n6 ~# [' o8 d( W
get-global-proportion
$ @9 {, \3 p* Slet trust-value
. \7 Q5 a# Q; [# rlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

: W# B( g4 i/ z. R; C  O$ b& jif(trust-value > trade-trust-value)
8 @$ i' O) l- d% h) {0 u[set trust-ok true]2 l- c3 @+ {9 D
end. s7 a1 S( V9 ]& S! t8 E. H
" f: y; R; v. a$ X4 E3 g
to get-global-proportion
  ]5 P/ H! ]0 P- n$ |; lifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
0 d5 `+ V9 B0 y+ p4 Z* E9 D[set global-proportion 0]4 D4 X) u# E7 N  C! T: l( l
[let i 0
: F# G  y- \2 u( R4 t) L8 D* Ulet sum-money 01 J7 Y2 j3 C6 t7 Q3 r
while[ i < people]
9 x+ e: t, Q: r) Y: r" O* I, j[, \0 P; P: y- J1 B# N. n
if( length (item i  J, y4 [8 R5 j: e6 x' |0 v" N' u' B
[trade-record-all] of customer) > 3 )
: E- d) T. X9 n; U8 x4 r9 d
[
( i* M8 m( w# |  D- uset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
& A# H# p9 S# v3 m  n0 R]
, U/ i1 ]* c  S6 d]
0 ~3 `5 {; f: W" V: Jlet j 06 J5 h$ {' \1 n2 K2 t$ h# B
let note 0
8 y, |8 W  U1 R+ ^" I5 gwhile[ j < people]5 v- a, v% R9 E6 `
[8 P! v! Z, |: m" X6 S. E: F7 C
if( length (item i
2 h) U! i5 S4 X# d& X; U( G[trade-record-all] of customer) > 3 )

  E* U! V/ E9 K( _/ _/ E0 a9 ]# H[
, R9 J7 f: M, U1 @3 D7 Bifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)2 r, V- R) F: Y' Q
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]& F- `5 m6 D* b8 ~
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]$ k5 g$ Z; N+ x; T  }
]
/ Y: k0 i  a+ L& v; v7 Z( C]
, @+ i. u+ O# q/ f- i0 o$ Dset global-proportion note8 ]8 D7 r6 S8 L+ {& m' d! a' c0 Q
]: C$ E$ o% a; Y! _/ w, `; q2 _
end
6 E+ v8 Q* I, a* q$ g' w1 j0 L" S9 p8 f/ |% Y) \( K& K- U6 I
to do-trade
8 q$ z- i( U! q1 B  z2 [$ R;;
这个过程实际上是给双方作出评价的过程
, w7 n  |* E9 hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价& J1 W* b/ m3 v1 I* S
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
4 L' n1 R) w: ^! L$ n" Xset trade-record-current lput(timer) trade-record-current0 K5 I% d# {' S' v# p5 M6 w* s
;;
评价时间. C' H% l) c1 Q9 n$ b* |. ]0 ~
ask myself [  |+ [: c* s: b4 e0 }# n# y
update-local-reputation4 |3 j; Q8 Z8 H0 h" |9 P
set trade-record-current lput([local-reputation] of myself) trade-record-current
2 N$ Q3 a- Z$ u' L& b( ], w& T  z+ N]- X- D5 G% P0 K9 S* u, K
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself9 ?' D0 N: _* r, i3 d
;;
将此次交易的记录加入到trade-record-one
4 Y. ]6 h0 m& vset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
3 w! p( g' A% i* T% |: ?( @let note (item 2 trade-record-current )3 u& j! i$ g5 e$ K
set trade-record-current
6 o) r. n5 Z1 J5 V0 n(replace-item 2 trade-record-current (item 3 trade-record-current))

& y5 l  N1 v) a- L6 qset trade-record-current
( a; I! j6 P" a$ y+ O(replace-item 3 trade-record-current note)
( V  U  A! r8 r0 ]  D2 p& {) K+ K! ]5 y6 D7 C
( U' [, d2 s8 j( O
ask customer [
  c, E- w1 Q2 u- Tupdate-local-reputation
' I, o+ D# B6 |$ u; iset trade-record-current
$ n1 X" X7 J6 L1 y(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
8 \* ^# [4 p: k# I9 x! k+ v+ f
]* \) Q! e9 a$ o, W
7 I2 C) [% \. I, N  \, C0 E

; n( t7 f) n& A; Rset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
. |$ f+ J& Y8 x. {# S% y

- B: t: }! b! `/ }% Aset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
7 s8 R9 F6 w' c  h& h6 K;;
将此次交易的记录加入到customertrade-record-all
9 C( J$ n# `0 j+ Q1 bend
! F6 U: t2 ^8 h5 u* b
: n) [5 z& B; g- j( vto update-local-reputation9 S0 R: `9 c: f
set [trade-record-one-len] of myself length [trade-record-one] of myself
+ O( a. Z9 K' S8 u6 Q- v& E  l- W  X

! k" `9 D! V, D8 m% V% L& f;;if [trade-record-one-len] of myself > 3

" X6 X; p" |5 e- Uupdate-neighbor-total
3 p3 c- P% x& L$ G4 X;;
更新邻居节点的数目,在此进行
* J3 k/ [$ ]$ e, H+ clet i 3+ z3 F0 `5 k) i8 F2 F
let sum-time 0( B( K4 I/ Z, j5 p# B  w
while[i < [trade-record-one-len] of myself]
+ l4 m  c: P  F' F' P[
3 T0 b$ q6 t2 \- }, u3 K0 Fset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
8 \4 ]; C$ c  V1 E; W' K+ Dset i
  c7 A+ t. m- w; Q  ^6 M7 @# C9 W( i + 1)

+ V. H. J- `5 ^/ B* ]7 D]8 d3 I2 U1 x) R
let j 3
5 |; j& S6 ?8 d9 g0 nlet sum-money 0
; g# h, f6 c4 m: ]! R6 q1 ]- bwhile[j < [trade-record-one-len] of myself]
$ t7 `) T4 F2 s" g[
- Z. T+ A; j7 J0 y* p! V6 F! Xset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)7 g  s. u# P/ W9 R# \
set j
+ B4 O* v/ y, F; C1 e. [7 \, ^( j + 1)

( F. ], N! z) z6 [/ c  X# W9 X], ~" n) j9 O# l7 T0 F! T  x
let k 39 E+ E6 D( J% C5 Y* I' ?
let power 0( ?( d- @8 x/ t5 G; G6 L8 q
let local 0
+ N, S5 x9 P* |5 V8 G6 Xwhile [k <[trade-record-one-len] of myself]0 ^8 a! ^( B( f/ k1 E
[* C  y6 {/ @8 {1 q: R" L
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)
: R8 R  ^* P) e: P) S. m# zset k (k + 1)
- E$ X0 f5 t1 |# @]6 ?$ s6 l& U1 H* M
set [local-reputation] of myself (local)% @' }3 N4 y  ?+ `$ ?. V$ z# E& U1 G
end
9 \0 [0 ^7 J. g  g/ g
% I3 q( R8 Z" C. \, A. n7 S3 Pto update-neighbor-total  i5 i. i- `1 P

( T" T: e4 g- ~! Kif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]: m9 [- x5 u0 _5 f
$ Y+ |5 Y  n: L# k+ _. l( l* R- U% @
* f' }2 j& `/ Z; w8 h% s
end
" n. t2 h; t% z, s* q/ A* _/ `* O2 l7 ?* V
to update-credibility-ijl ! Y$ A: \" z) _& U) ?

; E& r  }" N# Y6 s: |;;
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。- n0 W% z' V3 I9 F# S+ c9 Z& r
let l 0
  @' L8 [7 o8 n9 iwhile[ l < people ]) C) n' z3 r+ m2 t' `% S9 e
;;
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" e6 w, K7 S3 o
[2 f, X5 F8 g% ?8 A5 `; I
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)' |6 n1 d3 S8 t5 U
if (trade-record-one-j-l-len > 3)! N! E! F5 @- E+ l9 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-one$ T% q# E  A3 I- f
let i 3
3 F$ H2 _7 M* y2 Tlet sum-time 01 |! T# x, g7 S& x: U4 j
while[i < trade-record-one-len]$ B6 Q6 {' |( {9 {" U5 l
[0 R3 k* [& Z7 J, X- d4 O9 b, H) F
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
# L% ~8 Z/ l5 T( [; F' x" C" ?set i
4 D! b" ~4 K. N3 R# k6 T( i + 1)
, R: |3 x& w: B
]
$ ~7 ~( o5 j6 `  R/ c) |; {3 r' Jlet credibility-i-j-l 02 ]7 H. D$ [3 S6 ~  l9 A
;;i
评价(jjl的评价)0 c/ }0 U+ k" L( i# b
let j 3
" u6 d% \2 X9 y1 C0 Elet k 4
1 E! E4 g+ O# L3 dwhile[j < trade-record-one-len]3 u* L3 ~9 g6 d! }* e4 _2 v1 f- s
[  W, G! i& {( d9 ?+ v
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
+ `5 L: {2 f% E- _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)7 M9 H  H. l8 d$ W# ~' T, x
set j" Y& ^3 I* n  W: O; M
( j + 1)
9 z. R3 h$ [0 B" h  H% ^0 G/ j
], s- u: Y9 f: K7 I: w( w' g$ Q
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 ))
2 X( X) t8 C( o# Y+ c; j  c3 X9 K2 L: {) x

: j# T7 i  B( ]" alet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))1 G0 T3 f' ]! H  C+ ]
;;
及时更新il的评价质量的评价, J6 m: J- N  a5 ~
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]* R* j/ V7 C2 q1 P
set l (l + 1)
# }- f! _, H: |+ L]  Q6 l, k& T: ?7 A# ]: C
end- N5 G! c; h( R1 p8 z9 k' P) @; x
- s  u4 ^5 n# L! ?
to update-credibility-list9 o8 s! |3 _. n, i$ G8 X5 F
let i 0) w. w( }/ I. a$ M! X# G
while[i < people]
* H/ H( x5 _. B9 j$ Q[
- J4 E) }, [8 G4 ~) Z. Flet j 02 b' `! d/ t( ^4 V# a
let note 0: V: L! K$ Q0 R) ?3 B9 e
let k 0' A- D  r$ I& Z- I2 c* D+ u
;;
计作出过评价的邻居节点的数目0 d5 V' j1 R8 P% L8 X6 M# S
while[j < people]; e% F" A- ^0 w2 k# h- S, |( S
[
8 N! p- L/ U% @" Nif (item j( [credibility] of turtle (i + 1)) != -1)1 t8 h/ Z' A' p. r# m
;;
判断是否给本turtle的评价质量做出过评价的节点
. g/ }3 n$ X; C! F0 W0 }) J[set note (note + item j ([credibility]of turtle (i + 1)))" b8 p- x; T; y0 r0 A; i9 p
;;*(exp (-(people - 2)))/(people - 2))]
- c. E) T  p% W2 [
set k (k + 1)
/ s' G# d% ^8 @' K]
0 T  f* e+ Z. Kset j (j + 1)
+ j; p8 Y3 u% d* B]
4 f( p7 ?% \8 G# F) s. P) @  pset note (note *(exp (- (1 / k)))/ k)2 `. _5 T7 v( V" S  O* W/ [, r+ x3 z
set credibility-list (replace-item i credibility-list note)
( a+ j5 b& e% W' A1 K! }set i (i + 1)( L! U* |6 o- e4 _1 G
]
8 {  l; ]) y$ eend
, ~7 U; z/ g8 ]! K$ Y) p
# Y' H/ }, ?' K7 ato update-global-reputation-list7 [. h9 l2 z& o! C- [+ ]  m
let j 0- d" c  k/ g0 T6 c$ O& e/ k
while[j < people]
& o& p5 P+ N& ?5 e[
8 U6 S; G( f4 Y+ T5 G, Clet new 0
7 y  @+ \0 S! @+ D" D5 m;;
暂存新的一个全局声誉  I) m( E" @& l9 m
let i 0
# G: T0 i2 q4 T1 i$ Ylet sum-money 06 h( ^! x0 V% N
let credibility-money 0: V' }1 ]' f$ m. @& K" [
while [i < people]0 k% }% `# X6 m2 i
[
5 w' H/ C+ a. Hset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))1 y2 o" ]2 w3 ?, |5 s5 M. o& N
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))2 ]0 a  ]7 j! x9 p2 K$ d
set i (i + 1)
1 {( Q2 E- E$ Y; `. {! K  j: g]
% }: f' [' f* K4 ]' c, ~& xlet k 0& m5 ]' s' t" G- k
let new1 02 g; D3 Z: m% z& q' `% [
while [k < people]
* A5 d. E7 A; @, g" R[
5 t$ B6 A/ @- p* A: Jset 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)
$ P$ R0 n# Q0 X* n' W& iset k (k + 1)
- w3 l) x6 H" y6 ]]. z! _  Z) ^6 S% A* V% v
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) * F% a2 B+ S5 y; W% p) V
set global-reputation-list (replace-item j global-reputation-list new)0 L+ E# V2 s+ R! Z$ N3 i) o) H( e/ }8 i
set j (j + 1)
) v1 y' u& u7 V) [& u+ v5 _]
+ s# m4 M. Y' I5 [, Rend' ]& u: q; u: O! W2 G

2 F5 Q, ^) Y/ r/ @
! R  [( @2 W! R2 [2 m9 c6 ^% d* |7 F4 X% X6 o
to get-color3 t  q+ n0 P, ?% L( I  I
1 z$ \$ o1 F6 X1 o
set color blue

- f* ]$ n5 K) i4 P2 I* yend0 W, Z2 a1 b+ }+ M

+ {5 z( c# q7 e+ ato poll-class
0 C" k2 ?* N* _6 @4 R% o; Jend
, h, g% t( W3 S( G* f" z& u
" S; Q) Y3 l- S( i; w! ]to setup-plot1  e/ a* z) L( o+ N) p* @" l' F  X

7 n% N" p& U* y% s# @7 P, v7 Bset-current-plot "Trends-of-Local-reputation"
0 T) H% l$ C8 @8 `$ ]$ g! l

0 F* E4 v- }! u. q9 y/ j) Cset-plot-x-range 0 xmax
" y8 @# }. W7 d: |2 ^" s! W

8 i' B: H; L' `set-plot-y-range 0.0 ymax
) r! l& V- D4 ?7 o4 N* x# v1 j( Z/ W
end+ ]1 X0 j' W/ z! _* s- _" c9 o. j
' z& n2 y8 P3 f! H7 y
to setup-plot2
$ K% w6 K1 y% Z/ m! M, j& D% p
5 ?% N0 B. N+ U* y( i2 I& Yset-current-plot "Trends-of-global-reputation"
  q3 K, V0 a. W- k- |1 F
/ _( a  t3 D5 p7 G$ Q* Z' d- B4 t
set-plot-x-range 0 xmax

- o1 I' ^4 p, |0 t) T; @) x4 N7 R2 B. X" y" n% V: m' u& ?( f' {! ]
set-plot-y-range 0.0 ymax
0 i5 d0 R7 f7 J4 j) }" O: [
end
+ h, g1 T9 c  b6 |0 s. J* g8 H* V5 Q) d4 L1 A3 W# |& ]$ U1 }
to setup-plot3
  x% f$ l4 O9 Y  |' i. ~0 t- ~/ c1 q4 r
set-current-plot "Trends-of-credibility"
4 y4 X0 [( j2 r. X

5 a# f- a0 L3 r$ w2 qset-plot-x-range 0 xmax

6 F0 p7 r, U/ J. N7 c5 U1 O6 t* i$ b4 H+ C4 w! ~# w
set-plot-y-range 0.0 ymax
8 f; T6 G  Q; e% T  _
end
% V) M9 [& [, l& x' R$ J* p
6 a1 U, f; h  v0 ~: Q: w9 \to do-plots. v! l! s: A, I0 T0 S
set-current-plot "Trends-of-Local-reputation"0 F& N2 \) G( o
set-current-plot-pen "Honest service"
! Y( @8 p9 P1 S# m& Mend0 G& d& [- ^6 G7 d

# J4 [/ i2 r. _% T/ i[ 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.! O8 P5 E! f! K  z% }: |) R

( G% V+ T0 N6 P1 |* y, A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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