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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:
% r7 L. }. B, x- e5 pto do-business
  B  P. D: C8 [$ ^, Y rt random 360, d5 X6 A# V4 A# i: e& [& l# @( v  _: M
fd 1' s! k2 R" ?2 P0 o. s8 O
ifelse(other turtles-here != nobody)[
1 i; h& M- |% s! j   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.1 i& [1 L1 j( _& c
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
$ e( Q. ?+ Z0 C, U, V' K+ j3 q   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer, F7 e9 N9 l5 V1 f4 z
   set [trade-record-one-len] of self length [trade-record-one] of self, O! U- Z0 H2 F) {) _
   set trade-record-current( list (timer) (random money-upper-limit))
4 _2 Z  x3 Z- w" j* }
: K9 i+ d% I8 v2 v* K$ r, O问题的提示如下:
8 \6 E+ G1 k- ~% ^5 @- D& P% e8 c; X! Q+ m# C& C# U3 R" j
error while turtle 50 running OF in procedure DO-BUSINESS( T% V& p- Z% C3 l0 _- q5 k. R
  called by procedure GO
  J* \: Z- p" N9 [: L9 G* TOF expected input to be a turtle agentset or turtle but got NOBODY instead.
8 v& p0 |% X1 O% ^9 Z8 g
(halted running of go)
1 K4 u7 ]3 g# ]4 l
! J$ v( d. Q2 c; r  @  D5 d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~~
) L* @* z1 b8 {: R5 d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( W) F' w4 O: S! `9 i/ V
globals[# B0 s4 \+ h, l5 y5 e) C
xmax
+ n, b7 n8 O" P& s6 _ymax
. [( `$ `$ w! |/ N- w0 bglobal-reputation-list6 \! _1 d+ s6 s1 A- J. C9 Z

; ~- J2 I: e+ b5 U; I3 w0 f# u;;
每一个turtle的全局声誉都存在此LIST9 r9 k3 N; l; P1 J* @0 A5 V
credibility-list) w. n/ x# a5 y3 q! t: w
;;
每一个turtle的评价可信度) z6 V' L( ^( d4 }: J6 M
honest-service
7 W" Q: B# {( f( y5 aunhonest-service/ x  {- \8 s" F% ~
oscillation
9 A4 C! ^% @: X7 j/ Yrand-dynamic3 o& X& G; E( ~8 a
]* t# E. q; M7 M2 D
9 y% q* X' V; X6 T! [. r1 I
turtles-own[
' r% U  e* g7 F# \1 l$ \/ C6 H* _trade-record-all& h7 ^9 l0 t) U# m( H, A
;;a list of lists,
trade-record-one组成2 \- B/ C5 t0 V" p4 j$ Z
trade-record-one" c' P' G& M6 F$ P) M8 _
;;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 x4 m5 f' s1 q  ?7 x3 i5 i- R0 T
4 }0 s/ f4 I. D;;[
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]]  e$ ]3 c: r, g& f9 b& I. m+ o
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], ?& f8 ^2 a& W$ m- @0 I4 z! L9 }5 `
credibility-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list3 r7 E. f, y& ~# g9 Y
neighbor-total$ v. F" t# m. S! A
;;
记录该turtle的邻居节点的数目
1 }* [, c, k& R1 g( ^' ^trade-time
9 M- z( t/ Y/ V% D, o;;
当前发生交易的turtle的交易时间, C- e. H7 R$ [: |9 F; n
appraise-give: v$ ^& r& l) d/ e7 ?" g( k2 X# _
;;
当前发生交易时给出的评价
5 t9 A* B- S( D. k2 {appraise-receive
4 T0 E2 k! i4 W1 i3 m;;
当前发生交易时收到的评价
" R% M9 ?. H/ ]2 D& }appraise-time
4 Q; ]$ z; }9 f# ?* v- ?7 q;;
当前发生交易时的评价时间
9 I; q" H2 D/ d+ |local-reputation-now;;此次交易后相对于对方turtle的局部声誉
/ A# W( p+ \) p6 T/ t3 s! D: ~trade-times-total
0 t- {3 w9 n4 V5 G;;
与当前turtle的交易总次数
7 |+ z& j# h! k  Ytrade-money-total; y) E$ j; _9 N
;;
与当前turtle的交易总金额  O; {8 h: V; }. e$ u
local-reputation  d. l9 e8 \( `# K4 Z  s! ]7 e7 D
global-reputation
2 `2 k( n! K1 U& Ocredibility
+ \; G: G# p5 I3 E;;
评价可信度,每次交易后都需要更新
- C, b) X/ w2 U% i7 xcredibility-all
- d0 `5 y( G, D; S;;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
1 S" R3 i  `, V0 j% H5 m$ N
/ ~: B' m3 I- a* {+ y/ a  z) k8 {;;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
( e( I* n& H5 `& c$ s" Y4 ecredibility-one5 M- d: z3 _7 Z1 J4 }- h) g
;;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
7 M) R! D0 H$ [# L  N7 v: f; f6 Aglobal-proportion9 e3 ?' k/ X" G# ~: M
customer3 ?4 q& L% }# A, j% @" v6 M( C9 ]2 @& M
customer-no
  i  H2 t- f* m2 gtrust-ok' U8 d% [( n% N2 e  x2 x
trade-record-one-len;;trade-record-one的长度- Z% E# V* F+ n( N  X" L3 f
]$ l1 \9 d  e) c+ ?9 b
2 `, z# L! N  p/ D! N7 U" s
;;setup procedure
3 L5 O! H( G3 R; E; O! `. Z8 a% y# C4 C8 {! W) j
to setup
8 p' v; j4 Q3 x! j. I
! q+ Y: Z  ^1 D7 i4 E' L( e: Aca

; l" P$ J- w1 z3 S
2 k% P. x) u4 R' L: M0 uinitialize-settings

' G" F- U) Z0 _7 U- `
* g1 J1 `% P5 }$ [crt people [setup-turtles]
' a0 M1 [# i0 E- o& L

" N+ H+ z) R8 R- V( S; Vreset-timer

; y8 D2 _  c; _6 y% L% \0 ~" K
/ [* r" J4 x! Q) v& M' E; epoll-class
3 `# y* v& n5 P; E' w

8 F  R& }6 `- R& j* z. Rsetup-plots

9 I0 y: u* b  \4 B, e
* k* E* t4 ^- z$ @; a/ {do-plots
2 H- Q+ V2 O/ E1 }7 p8 o% I2 t1 U2 Y3 |
end* w1 O  d) A, @8 d( n

# O  O. L6 p5 O9 [to initialize-settings; u3 s8 o( P( ]* o1 m1 ]
' ~8 ]1 r' P8 Y" f& v
set global-reputation-list []
0 n4 i, t. R) d  n4 s# {% _

1 A; q! r5 \$ a/ N$ lset credibility-list n-values people [0.5]

. t& S6 h- U' p, d4 S! V6 u
' `9 T3 Z, F& ]) |/ _set honest-service 0
6 p0 g8 e; [8 ?3 T
& ]$ C* Y$ I: F" X" y
set unhonest-service 0
* v& q, C8 x0 Q. g! i
! Q* V! L6 C' {! h2 \
set oscillation 0
8 x5 G2 q: a7 k  K! \/ Z

/ N9 v; j5 |1 L5 {" a, E$ f& Vset rand-dynamic 0

- z( }) ^. V5 s5 R5 r1 f4 qend# R0 j- w$ }6 e2 a: O, m
+ Q! I$ g; t/ k6 K2 F
to setup-turtles
9 X" i2 U% J1 e& R" _set shape "person". w% Q2 m; y1 ~! }' y6 H% I8 Q
setxy random-xcor random-ycor
" }* T+ C2 m9 k1 M2 F, |  Qset trade-record-one []
# o- U( O, g0 v2 S
; |! E9 T( }; V5 m& m
set trade-record-all n-values people [(list (? + 1) 0 0)]
1 q. a2 E, M' C- m6 q) I% H; t1 d
4 j# r1 J1 }5 D4 e7 {  K
set trade-record-current []3 S8 F3 w' m5 V2 y; ]: V
set credibility-receive []8 ?: j: C( Y9 m
set local-reputation 0.5
- e& X9 r' ^# t2 B/ Oset neighbor-total 0) Z+ w! M4 Y, M& s) ]% q0 p
set trade-times-total 0: c' ~6 q% A# L
set trade-money-total 0# @/ U$ t" ~; H7 j- o
set customer nobody
8 v2 e6 R* L- Dset credibility-all n-values people [creat-credibility]3 K5 v/ K6 D, f$ X* N
set credibility n-values people [-1]' P4 V3 m' r$ {- X* N9 B
get-color3 l1 ^& y  k9 \7 L8 d

' j! }1 ^# D( x+ send3 ?" l7 T- S9 t1 m# E' w# R
) Q/ J8 F' _+ E- l# X" ^# n
to-report creat-credibility; G+ w# U- c* W, W$ ^: n
report n-values people [0.5], y; a9 q' `& y0 d9 v. V
end
# m- V- Q. D) ^+ g5 q+ c% _  D: q8 O$ \9 t' N
to setup-plots9 L! V# H; P* p4 |, w7 z

8 ?7 d, o$ h: U' r7 a" mset xmax 30
- n/ h; P- x, G# W1 Y; m
( }/ X. S) ]! Q& ~3 G3 S+ C
set ymax 1.0

1 F9 _6 l( Z+ k2 e8 p3 ^
( ?4 o, T/ v  aclear-all-plots
3 }% H8 q, _6 e. l* d2 l! x8 x

- g5 x7 G* L6 v/ j) E+ d" Tsetup-plot1
# p5 c3 `0 X6 ]: o# ^' R

& H8 [( ]6 ?& \setup-plot2
, ^7 `4 V; Z: @/ U8 T" J$ d# v

; A7 Z9 E: q9 p! a4 T+ i" ]! ?setup-plot3

1 k4 Z4 E& G9 m* C; ^. Dend
& i+ x2 c4 P$ U& C6 S; }0 [; a$ O/ L8 v( u1 T, G) E: {% |4 s
;;run time procedures
  r1 b( C5 {4 R0 m
# v2 g" Z5 p  o/ Uto go+ {, e# g0 j, l8 s! {) v0 o9 f% B
4 j9 d- B# {; N! I# ^' m) |. R6 i. @
ask turtles [do-business]
! v& m  \) C; F- _, M0 p
end
+ C5 _+ J+ t8 ^
" d+ j% t2 p5 s: Sto do-business   m  A& V  S4 T9 M8 p: ]
1 [- h/ A# W$ @5 \% h3 I

; m1 M0 J0 F$ c1 l+ p9 F' i5 r2 P3 art random 360
& p7 {( J8 `# p" _( t# z% {
3 x4 Q3 k4 o5 [7 S) F% q& L
fd 1

( c: ~. O! r9 @( t) ~& E- V+ O8 x( ?) q, g9 o: w5 r
ifelse(other turtles-here != nobody)[

/ E. K1 Q) k* p* `: g, F
7 X, Y/ G1 v% Z% @9 O& ]6 S, _set customer one-of other turtles-here

* ^0 u; g' O5 ?. ^9 p' j5 H9 Q; T9 P  T, Z! Z5 Q- M
;; set [customer] of customer myself
% c; t3 b& E+ J

& G& }9 w. C- B' |0 O4 t0 V+ g+ }set [trade-record-one] of self item (([who] of customer) - 1)
) L* y0 o$ Q( j/ k- W[trade-record-all]of self4 {: A5 e& V( g: g) c
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

* N' U8 a3 h/ g/ B( \( v# o% u% d
' s, d3 p4 p1 ~5 N, f" iset [trade-record-one] of customer item (([who] of self) - 1)
) l" |1 J! _$ N) }[trade-record-all]of customer
1 N# C3 }) h) S; i6 q. r9 ~* K

  ~# |" w2 i6 G! r( |set [trade-record-one-len] of self length [trade-record-one] of self
: _6 U; S- e8 f, w) h

  R% R9 j" C% f# ?  G' W, _set trade-record-current( list (timer) (random money-upper-limit))
' A/ I3 S# i& ^. Q

8 S1 I$ |4 e' l: N& y! H, @6 D, vask self [do-trust]
& ~% \" @' X% B0 X  u6 J0 ?;;
先求ij的信任度
6 y! Z  Y" ]0 i" R6 q$ j
# i( K6 o% q( E3 u( qif ([trust-ok] of self)2 b1 E* S0 i5 u2 _& D- G0 t
;;
根据ij的信任度来决定是否与j进行交易[
/ H: p" X" V- e: g5 zask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself! g% a+ }) ~9 V9 |# Y* k

$ l# H# D8 P- F2 _. \4 V[
( d1 X3 ?& b% m! X0 ^1 U! \
$ T( i) h0 ]! }+ P  ?
do-trade
) t4 U* D+ m9 Z1 x- v/ q' H

0 t2 [9 D1 n6 nupdate-credibility-ijl

) ^) }4 w& I, t8 {/ b; E% L( \6 z7 _4 Y4 H2 }
update-credibility-list/ |  ^$ ^+ m$ t- h, R+ ?; ~- h

  T+ N, U. U& s1 e/ ?6 q4 E* |+ T. n  \
update-global-reputation-list

5 k& X$ }  v% c# M
. j% I( E- S5 V3 S# f8 p' _7 h* `  qpoll-class
; P/ [( t7 c# }2 b; m' ~
7 g# w& l  U! g. ]+ b  M4 ?: X
get-color

; B9 X& o3 m8 T; M6 n1 S7 g0 [0 y" m( o% j; W1 v2 x
]]% x0 d. C" l3 b: q5 W: ~
$ T+ n% U7 i) c# H0 Q
;;
如果所得的信任度满足条件,则进行交易
2 G' [1 N1 W2 j( i8 N. e* n, x
) Y# d) B: x' O3 _; z4 m; P[

7 z! x4 g/ z: A
, X. E* s# s/ X' N% mrt random 360
+ T, ?' T4 Z) p! y5 N' x
6 F' D  V2 R. _
fd 1

" \' s5 T( R) B& b9 I; U, h1 x0 V+ d. u, X; T2 j2 v
]

! ?7 M) G& f# h( F* x" L' F9 n* g" R; H: H/ Q
end

0 a1 b8 v! O( t' i  J% ?2 L# c4 l6 l
to do-trust 8 X$ ]( \% g; ]& [# p6 h8 i
set trust-ok False1 q/ t9 ?1 Z) h6 B2 _+ @( K1 V
3 f4 g% @+ o7 j8 h" U. X2 A
4 J/ {/ H9 {% S" e( {
let max-trade-times 0/ o$ s) x8 |" w: H3 |
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]1 h. C/ X5 y0 e: v
let max-trade-money 0
, E- d/ Z6 P5 s+ r7 j) S  Oforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]6 Y# {- I0 u4 p: ]9 ~1 A8 z
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
" w4 w; @# e" `) `
1 k5 ^" e6 J0 V6 d# \

. Y+ T' O3 p# L+ y3 xget-global-proportion
6 Y7 g2 H2 k6 c$ f% a, |6 |1 P: tlet trust-value
% Z, g1 @; M4 K- wlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

8 L; P: H# p( w: M% Cif(trust-value > trade-trust-value)
3 o6 F  M$ h0 ^" K[set trust-ok true]
" X; C, l; W  V4 Lend
1 ^% ~( e! W; ^. X6 T/ F' `* e: Q8 ~' ^( B* C) ^5 V
to get-global-proportion( X. w7 L: L5 F/ b/ b' y
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
  a* A* v+ E/ [2 `. `[set global-proportion 0]
  Q! w( b/ ?. D8 T2 C% E* [[let i 0
7 Y8 m9 q5 i% W; A# ?; Plet sum-money 04 g# T/ E8 `( _; I; T# T
while[ i < people]
- H( m, d* ^7 J; l4 ?[
7 f$ P* f5 i# l- Y+ }if( length (item i
1 w2 f0 i, Q8 M[trade-record-all] of customer) > 3 )

: P5 k3 H8 F2 r: M4 `+ n1 F[
& h" @; }/ ?) Q' F/ qset sum-money (sum-money + item 2(item i [trade-record-all] of myself))/ C2 @% ]5 b: x3 |/ r
]
, g7 p: ~8 L% w  Y8 |]+ h; ?! i& F% L% \1 c6 X
let j 0: s( ?' T  r: q0 f
let note 0
+ T7 ^# X, W% a/ s, n$ Zwhile[ j < people]% z& N2 t, X  Y3 N
[; h' ~/ L$ H- ?: [6 }/ f- c
if( length (item i# S+ s; T! L) n1 w# B" X
[trade-record-all] of customer) > 3 )

" A; v1 B( s0 t3 v[/ ^2 h/ M; y* a) n
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)+ a& m% s; E) h: k5 f$ G; N5 i, G- }
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]- R' \. V+ H6 l0 a, ]8 ]% b/ t
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
& i8 h( V, ?. Z# C) e; N]; |! ?  Q# U! p
]7 H( _& v! f* e3 X
set global-proportion note3 l, Z1 L, s& A5 y; F- u/ z9 q& q$ v
]
6 W: b1 w$ B' I8 send
& {8 |1 _, M/ n- c) i
% [0 e( Y, @) Z! sto do-trade6 T' X0 |) Y/ d7 r1 |. t5 X, [
;;
这个过程实际上是给双方作出评价的过程) R0 M( P* v9 m' H6 ?5 c
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价$ R* H- c+ r+ d6 Z  V+ a
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
5 M) ^4 y' C6 eset trade-record-current lput(timer) trade-record-current
, N0 S1 F, T" @- C. _1 w5 V;;
评价时间
1 y* R' m! g8 ?ask myself [
, k8 Y4 @# G" d1 V6 Zupdate-local-reputation& {) f& }0 R* `$ r/ U% C
set trade-record-current lput([local-reputation] of myself) trade-record-current
: R. p6 T1 [  r- i6 t$ c) c]* G2 N) L. B$ M9 J/ l$ }' d. E
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
- e8 |! M  V% j" b$ u9 ^;;
将此次交易的记录加入到trade-record-one' }- J& {+ H2 d
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself), t! ]/ Y/ p- r$ @
let note (item 2 trade-record-current )9 j' h7 b2 e" M# `6 L1 M
set trade-record-current% y# A( _. h# H$ }* s7 W
(replace-item 2 trade-record-current (item 3 trade-record-current))

+ {) K) i0 F0 `, Uset trade-record-current
' @$ J: W. R3 J$ K: g# g8 G(replace-item 3 trade-record-current note)
" w8 {3 [% [/ v( \
$ t* v" A) B7 V% E. ?' A
, k$ I/ _5 f, d6 O. y
ask customer [
  @1 _$ G) K2 T& X. ]& q$ R4 tupdate-local-reputation* K8 Y8 R0 [4 M- y
set trade-record-current9 W4 E6 b4 L$ j4 ^" \
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

  x) i3 x, H. |3 X! T. `0 }]4 N4 R1 R  h/ k

$ R& ^, v6 u- A6 e/ W4 y1 i
3 H% C" ^3 v/ |" P- b" F% V3 D
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- @# J' ?( X8 ~
2 Y) f2 \- m8 O8 M8 p
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
( [, v' [7 r2 \( t# c% c: };;
将此次交易的记录加入到customertrade-record-all; [6 I1 g: n; W) U  b  _7 u, r6 U
end9 [* y8 @- a2 s5 R

' N* D; F2 M$ a: M6 g+ pto update-local-reputation
$ d) J- Q% R! F5 bset [trade-record-one-len] of myself length [trade-record-one] of myself
6 E4 O* M0 W  s% |& X( p8 e1 p! ~. _- C: N" L

. f$ }5 x$ b; o9 X/ a;;if [trade-record-one-len] of myself > 3

3 d8 Z7 a- t( jupdate-neighbor-total
4 d5 X: B5 ~; P; g) P, ?;;
更新邻居节点的数目,在此进行
- O4 K3 T+ P2 W- m! N& Plet i 3* u8 [- O$ n& F
let sum-time 0+ e, y( U7 u* M8 b# M( ?. ?
while[i < [trade-record-one-len] of myself]# f# c& D; p1 @" a6 F4 X. D) R8 f
[
! U! c: V% x0 H2 @  oset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )) w, c( z" P- }, d0 y8 \6 a1 {
set i
$ J- G) F* C  K) ?( i + 1)
" o; j" \# `& L: l5 F
]3 j4 k. m, k! ^# U9 t
let j 32 Z6 M. U! _% ]3 m* L4 ]
let sum-money 03 W' C5 y+ j! a+ u2 W/ G
while[j < [trade-record-one-len] of myself]
8 Z" _- f; C- o4 P3 e) N[5 v( @9 y& [; @# C# U4 V; n/ F2 z5 V
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)
( C- c( }" S" `/ w' nset j, T; v8 V/ i8 O3 Y' c6 D# J( g- K
( j + 1)
8 ?1 G8 w, x* U2 r' u  A+ \0 u
]8 V& s9 n3 X: u+ O* p: K# w
let k 3
" ~. t3 E# s. F( k6 V6 j. `* @, Plet power 0
! J& }- v4 V4 V" x6 ^3 p5 Q" |let local 0
8 g& S7 e1 ]7 g, awhile [k <[trade-record-one-len] of myself]
5 V! y: [0 t* ^: W4 g7 ]. k[
* ?+ F( B5 d# ~. c/ r  _/ f1 Dset 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)
' N: w" I% Q: m3 c- r+ @5 y2 s. [set k (k + 1)
! U8 H6 N- R' i. w6 ~' q]
$ x# q( x4 e- |set [local-reputation] of myself (local)
! S8 }/ B/ l4 u7 Rend
5 H5 n2 j9 e5 \6 h8 J# g1 x  Y" N, W* }1 o6 a( l/ u6 A
to update-neighbor-total
: C/ b* P. I) z3 S/ {: l7 w. K/ F5 I; Q6 C5 A: F
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
; @5 v# _/ H& H( ~; f  P4 N  c: K' i' o) F' b. h/ v( z

5 q2 T- u. k$ t$ R( o2 p3 send( Z# Y, N) F' y* d8 @% G0 }, {2 x% ~

7 _% c" @# z+ U& B# oto update-credibility-ijl 6 K  _- f5 O4 E/ s) Q- t% L
% V% p) g* f; H& B$ b" X& T
;;
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。! H; K' s" l/ X
let l 0, |0 C5 n. m& M$ C
while[ l < people ]& B, p5 z5 K1 E& H
;;
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2 D( b% Z# e: f1 _5 j
[
+ z) O- c# m, i/ H: hlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
3 Y9 t* O  j: z* Sif (trade-record-one-j-l-len > 3)
' s- m" l+ L) l% l; H9 C  l- g[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
, ]' ~1 X' i& c# t6 ~let i 3
/ o' X5 @+ d! T- \let sum-time 04 Q9 d& H9 Z1 ~6 u3 }
while[i < trade-record-one-len]
* o$ o( Z3 B" h8 A& B: w[
+ W! w- Y1 l5 {" ]7 Y% O+ m/ Zset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
9 ], o" W; @& e& Nset i3 h/ Y# M* \. B
( i + 1)

: @, X: W& N0 M$ G3 l  N$ k, p]
) J1 o% N6 j5 llet credibility-i-j-l 0
/ a, h$ j8 G' m# E;;i
评价(jjl的评价)6 k1 Z6 S6 y. ~+ n# x8 m
let j 3
1 k2 w1 Q$ \# k4 Z# i8 Vlet k 4
! J* @. i0 z2 o$ y% e9 }1 S8 Rwhile[j < trade-record-one-len]
  P6 P% N9 f; y! p[+ N! k* |# k4 a. I4 h/ [. `. a
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6 k  T+ Q( k) [
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); A% q, Z9 B4 u0 [: M5 L( Y' |3 Z
set j) k) P; X4 I2 g
( j + 1)

% h' N5 j( A9 J( y7 r1 z8 |2 E]7 q( q9 U! i& Z- S6 E% w+ K  S
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
9 [: f4 D$ t/ X' k1 B7 c: C* k0 T9 H* d! F$ a- ?! _. R

6 T# @4 ^5 P8 r0 X& F. plet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))0 ]. M* H. Q) v% _# E
;;
及时更新il的评价质量的评价
& @' G. ]5 }4 l0 e4 c  ?, Rset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
* `* S0 v) P3 _& D# i+ B" Xset l (l + 1)
  a6 T3 a% P  t9 G. M5 j* D]
/ e0 H% G9 b2 ^+ @8 {6 oend
( n  t1 R& C: k1 D( _* K
, {$ [/ f" Y3 P) zto update-credibility-list* g  Z9 k& M! `
let i 01 L: V" B$ Y4 ~$ y* i! {% H
while[i < people]
$ U: Z% U$ i$ ^4 p: ^7 H) ~[! D- R$ x. b- L
let j 05 Q+ x. u5 ]2 }# d* d+ D9 h3 T
let note 0
, a) J- c7 @$ W/ O! Klet k 0
' _. P9 K% y, }: v; u! Q8 d/ s;;
计作出过评价的邻居节点的数目4 H8 |5 [$ M  X( ~2 T8 D! z4 U
while[j < people]# V9 O8 L3 ?" D& h% ]" E: \3 X
[
! e$ W6 H1 r/ k# w: Uif (item j( [credibility] of turtle (i + 1)) != -1)
, N; C' B) p, }% l$ I* R;;
判断是否给本turtle的评价质量做出过评价的节点
. b, L9 O8 }& v: O0 ][set note (note + item j ([credibility]of turtle (i + 1)))+ M: X$ }, H* ^& o9 D: @# K# ]
;;*(exp (-(people - 2)))/(people - 2))]

- l9 |; b. [9 V( d0 h8 t& g$ e( iset k (k + 1)
5 L5 A- u: T: \& i6 a+ T]
# a1 I9 R, [( W8 Q( `0 ~9 lset j (j + 1)
/ H$ i" [0 A7 n0 w+ L]
% B( a1 s; V% _set note (note *(exp (- (1 / k)))/ k)8 X6 S, R# @, J8 h$ E
set credibility-list (replace-item i credibility-list note)0 Q3 |% e8 P( `' R  s9 B9 {# _  u
set i (i + 1)0 e8 Z* F! ~7 r/ B) h6 z
]! @8 i) [, _2 B7 _7 n( K
end1 K0 `, O+ v+ M0 [) s  ^$ f! P5 j, ^1 k

! i; M3 n7 V7 p4 q+ [2 _# Vto update-global-reputation-list+ C+ |2 r$ G1 e' E! Y
let j 07 R9 D6 B" k6 P+ \# R
while[j < people]
0 C( X' Q: ~, Y, A# Z[! t( U. q, t/ g/ G0 D2 J/ S. g2 C
let new 00 I( }' \1 Q& v! D' \0 l
;;
暂存新的一个全局声誉
2 k7 o2 P; Z8 O+ d# z9 Flet i 0
! F. r" O+ H! O  n1 _1 z$ Zlet sum-money 00 Q8 P" `* j9 O9 ^; q2 `
let credibility-money 0$ `% [: j3 R) x1 m2 m4 ]( b) ^
while [i < people]
/ ~, V6 N& Z6 U/ J. k) a  F[1 O. W3 s) L+ s% X! g3 H# B7 L6 U
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
+ F9 I8 ~2 }# j4 P! K  i7 A+ iset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
' l9 ^6 o) ~" ?# T, q1 s% |+ Mset i (i + 1)
% H+ f( ^; ~: i- x; J; b& l( c]
% n1 s, k1 H& j, Q/ c. Nlet k 0
* M. Z9 b- K. t$ M1 M! k0 e5 vlet new1 0
3 O2 H% ]. n1 u1 H. ewhile [k < people]
) e/ n6 }8 S; a1 O  F  k6 T[& k5 g5 Z* O7 N) @% o) g
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)7 {, R* S7 N6 l( m
set k (k + 1)/ f% t/ ~: r; _( [* I) _
]5 a2 s* ^+ O. O. ^/ C- d& e
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
  O4 `) ~6 _) f/ Hset global-reputation-list (replace-item j global-reputation-list new)
; ^4 b6 ^1 t0 J; o7 }0 ^( C" W' o9 Q3 @set j (j + 1)
% F1 E- f9 t; P/ C* M, S]' r7 k6 h% ?: @' U" Q8 v
end
& g1 |' |  q( f1 S5 o; y, K+ w5 N1 I3 M( ?0 s: p) `) e) z4 i

- g, {& y1 Z! o) N7 I/ E. D; k5 T: t% b6 s
to get-color
. S9 q" _  }8 U! u$ E
0 u) ^0 E8 y1 P4 l6 ]( ^set color blue
' n' i# y* U! k3 u
end" E/ A$ `2 r6 K/ E+ \/ s
! Q! q' i0 z: h! u0 p1 i% ?
to poll-class, X) Z  t- E) ?5 k' z) U: N* G
end6 C2 [1 w5 l0 s# q( `9 Z" ~# [4 s' s
# K! @3 j; t! d! ~
to setup-plot1
: `2 j* Y3 G. w* C3 T
7 ]+ K! @% s, w3 [: w9 d. T2 qset-current-plot "Trends-of-Local-reputation"

. V% h- u6 R$ f4 s
: A: s+ S* {4 u0 mset-plot-x-range 0 xmax
$ j* O8 r4 A- Q/ ], Y7 H
, y/ p- k7 s2 A/ j% J
set-plot-y-range 0.0 ymax
% s4 {, V8 Y: A9 }
end
7 [& h) f3 P+ H+ ]8 C9 d: y( H# C1 {$ C: O. d4 y" Z; @& Q$ Z
to setup-plot2
* F* S" E. J( a! G9 m- M4 F. H" [1 w9 d- P( N, H2 q
set-current-plot "Trends-of-global-reputation"
! M! [5 x* E6 @9 v& c
4 o, @! p+ g4 o6 q! z( L+ q1 l
set-plot-x-range 0 xmax

5 Q- V3 O! n7 b, U1 Y. T& ~" e4 _
1 a7 K% m0 H" R  T7 Y4 {# V; iset-plot-y-range 0.0 ymax
0 e& L* \0 U% Y& Y
end
1 J! J% l7 F9 L
1 C% I; A" p6 S9 I7 Xto setup-plot35 ?! [# H5 r2 `" w( W9 s
3 ]6 Q) x8 M: h. @1 m9 w) V
set-current-plot "Trends-of-credibility"
$ n9 \3 d2 S+ U8 N( ^- C+ w
6 q* a  O) |3 M6 c5 h: F
set-plot-x-range 0 xmax
* x& y, ]1 z  V' @

# w3 C: p1 d2 _0 zset-plot-y-range 0.0 ymax
/ R. C' J6 p  `
end
% ~/ t4 k8 `0 m$ D; L% C* b3 K1 y5 |3 R4 r/ S
to do-plots, h4 U6 d* k0 r# F" A
set-current-plot "Trends-of-Local-reputation"
6 ], l: m6 p* W( `( s5 Qset-current-plot-pen "Honest service", d: I2 z2 |9 E
end" d8 J5 D2 d. h  |# X& E
. r; I# v; q! ^$ _$ P
[ 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.
- U- b7 q! U! T! v
' q, i2 a% }' z" D$ x) u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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