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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:" S" O  E8 o0 k9 K, l3 f
to do-business 9 a) t6 ^4 A2 J# i
rt random 360
: c6 k+ h: A9 R& L  Y0 { fd 1
* s( D6 x5 ~4 ^: q ifelse(other turtles-here != nobody)[" \0 C$ x) M0 L3 L
   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.
0 Z6 r  V9 V3 n. n   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    & ^9 O# l9 y/ U3 ]* u; c) _
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer/ t& ]5 A' f! ^0 C* A/ O7 R
   set [trade-record-one-len] of self length [trade-record-one] of self5 ~" V: K/ r* W! Y" d" Q  U
   set trade-record-current( list (timer) (random money-upper-limit))
5 @. x1 X5 }* N& b* B* t8 ^: }" J) t5 q$ N/ J
问题的提示如下:! ^, K  u* n2 a5 ~' S8 S
! ?8 ^5 X/ V. p+ |, l
error while turtle 50 running OF in procedure DO-BUSINESS" V. B( v0 N* m  m, P  z& k' G$ v! }
  called by procedure GO" t) u. E' U5 F5 c
OF expected input to be a turtle agentset or turtle but got NOBODY instead.9 A0 _( D1 o8 w/ M- r
(halted running of go)
5 b+ @0 w2 Z% S# f8 m, C, ?- z, L
1 o, s0 b4 S5 L* `+ c+ a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~~
( D0 r( {3 O: r1 R) _9 B. ~* r5 ^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
8 M) }/ I- i, k2 {( u5 Kglobals[1 s2 w& B- |) \
xmax2 O3 c" q1 M/ F( `- W5 J
ymax
( e5 x+ [" Q0 j: Z% U' z1 \! \global-reputation-list  I) o2 o- I- [/ R
$ j. G% j7 D! K  x
;;
每一个turtle的全局声誉都存在此LIST; h+ c$ A5 c" X( i* O
credibility-list. E2 U$ T. N! ^2 I3 I( N' L9 F
;;
每一个turtle的评价可信度
7 p) Q- h; _8 @2 g/ Y  F$ }, Zhonest-service" t# I6 ~1 J" Q: W* h
unhonest-service  h' Q- Q, A% |
oscillation
4 I) F- g* r5 V+ r0 o% Vrand-dynamic
; F( j) t% e: I% W. T1 N6 D3 s]
( |! w! u8 G* s% t7 I! y
3 t2 `5 C) R, Xturtles-own[6 [2 t3 o2 _1 d, X. A/ q
trade-record-all( g+ J5 N$ q- N
;;a list of lists,
trade-record-one组成
! j' ~" H4 m, W5 _+ ?( Q- G2 T, vtrade-record-one
4 @8 {1 A* }$ T;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
" D8 _1 c' q8 F- G$ ^+ O+ D/ U, I9 [, M$ c6 W& K  N, M/ d; 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]]
) E( P& S& ~/ C: B. e3 Ntrade-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]- X& U3 O- O2 O. }
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list
7 X7 m0 \4 d! I: r% ]9 G0 s- m+ Zneighbor-total# C5 A( w, ?/ T1 O  c6 L
;;
记录该turtle的邻居节点的数目6 s/ Q0 h6 q) n
trade-time
) v6 ~$ u2 r( M: Q# m7 H/ X;;
当前发生交易的turtle的交易时间  D! |8 b& a! V5 i; [- b2 A
appraise-give: A, [9 w7 F" [
;;
当前发生交易时给出的评价2 F6 e9 O) I- L3 O$ W
appraise-receive2 }  h! n0 V4 K9 [2 v9 k
;;
当前发生交易时收到的评价7 z$ V/ v8 q6 Y3 B1 ~1 z
appraise-time& l/ Y% T! t2 t9 ?5 V! ^! v2 _
;;
当前发生交易时的评价时间
5 g0 G+ C) C6 p& ]1 u- m- a6 M; a  Blocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
0 _' S" ], T  ?trade-times-total
! L- A* G8 \  t1 ]+ B;;
与当前turtle的交易总次数
* e" s7 y4 F) e: u* \4 J& C6 ltrade-money-total$ s. j' q: C+ K& p& f
;;
与当前turtle的交易总金额9 a: @. O+ R: E! J: v; H  _
local-reputation
) m  ?4 l: Y9 I8 t* u4 Mglobal-reputation
  H0 Y+ a8 L- @; N+ f2 |credibility
0 Y3 p/ o' J6 M) c9 o7 U' F;;
评价可信度,每次交易后都需要更新
; D" \& ], A( F( y0 Ccredibility-all; h. c4 l1 [: R( R% z
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据# c  T4 x4 F# ?! u7 s

) S' l2 ?: o: Y;;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
; S: g3 G! R3 Hcredibility-one# m+ F4 |" U/ m! V
;;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
* R3 Q& O. q1 E0 z2 b5 t0 Tglobal-proportion. ?( x/ _2 \; T
customer
7 r# h: F2 R- }6 ccustomer-no) z  n! u" C2 k6 y" c9 y& {  `
trust-ok
; x( G- h6 {9 r7 o9 T# r7 Dtrade-record-one-len;;trade-record-one的长度: u1 S! H4 _3 j5 a
]. H7 j9 z8 Y3 v% E" u

1 x9 i% E3 n9 J! ~8 V) N  g) K;;setup procedure4 ?) Y0 L1 f8 S6 l  N! _

8 W. L- Z5 q0 o2 R% V$ ~" Z2 ^to setup
/ Z/ C3 D% o( d; F) u. y
" S1 ]" S) [; |- h* x3 ?' ^ca

1 L0 L. E: F1 q! \. L$ c8 e0 y6 k
initialize-settings

0 y; K; ^$ g4 ^7 L. V2 I! z# b- ~+ d; n( ]! s! s# F: p+ x
crt people [setup-turtles]
  J& |( O& {8 k0 p

  t3 \. i& D: [( P* ~. `reset-timer
7 I* u  N" M, i# Z6 X$ E% t

) Z2 u, f$ o  C$ R- mpoll-class

7 P# k: t! r! D2 y. ?0 D( ^, J% Q: f8 `5 S
setup-plots
# Y# k- `# S1 D; y" Y5 u/ K

( ~; A3 k7 ]8 V2 c& _( D, {do-plots

8 t  A: f) U; O# v5 Hend% T8 z  E3 J% M7 J
. ^, B4 f5 S$ E3 i" @6 z
to initialize-settings
. M0 s3 B0 `1 z/ J& l& n3 u5 v* z6 Z
" Y/ g6 Q" E  y7 nset global-reputation-list []

) H$ l% R" W5 u  g- u( p/ e/ L# E
! F3 l9 n# Z8 M7 m, Nset credibility-list n-values people [0.5]
! `* i: S9 y1 N/ @

8 s* ~. T* w$ v6 \- W% p6 ?- {* jset honest-service 0
8 t, \* |) C! j* y: \6 ^4 N

% A0 U  _+ _* q$ M8 I( c: fset unhonest-service 0

: s* s; I9 U5 p0 a4 O. ?, V5 i, o  [& v6 Q
set oscillation 0

9 u' f( [  u  M  j, m, j7 h. U1 I4 s$ v
set rand-dynamic 0

$ ~# @5 g2 n$ C, c4 send
1 o4 Z# P, m( G4 Q4 x8 t# j
3 c% I$ T. y- }7 P3 Vto setup-turtles ) @+ L, \8 |9 l* ]9 m! ^
set shape "person"" {# e: j2 V0 ]/ }/ k
setxy random-xcor random-ycor
6 j* @; ^! g! e" r" p( r3 `set trade-record-one []1 _! L. p% Y, K6 X) E1 a  ]; ]

7 B$ t5 p; {5 v2 d) R7 ]set trade-record-all n-values people [(list (? + 1) 0 0)] ) [6 c: ]: I3 g& d- O! I0 h
% P" g4 I. C- E: Q
set trade-record-current []- A, B! z8 ]; \  [+ h" z0 B  s& }* u* x
set credibility-receive []# h1 q2 d# l4 v& P
set local-reputation 0.5
2 r) Y3 B$ G  `set neighbor-total 0
$ d' [; N$ h  D+ `, d: Eset trade-times-total 0
& r) K' D& w  c) |9 H7 Gset trade-money-total 08 @$ f- }; ^; _) L6 T: R
set customer nobody/ V! q/ W. s5 l1 S" J, _
set credibility-all n-values people [creat-credibility]
0 i$ v1 ]: K3 \# E1 G* T3 tset credibility n-values people [-1]
! n9 N) |( o) [# H8 Pget-color' x7 O. x% \) n6 x3 y
; ?. F: R! ^# n' w1 R7 J
end
( Q; i) b- m2 l  a0 Q4 \; o3 ~. `) R& N
to-report creat-credibility8 F' V* S* z+ V, T; N5 ~
report n-values people [0.5]7 Z2 x/ J8 p: j( l  ]
end
* i3 B) o0 ]0 N9 |
# b8 `2 {. E0 I  E2 T8 @to setup-plots
# O9 _: L/ \7 [$ g# z! h6 j0 H; c- R" Y! v3 Y0 S. f  s
set xmax 30

- z' z  ^; K0 A! d! C( R' p& k5 _* I; ^0 v* p# d& {$ k
set ymax 1.0
) W1 L* ?( L) n- j7 ~# d: a5 T, I
6 X/ C9 z6 B; H  P6 y- a5 C1 w6 g
clear-all-plots

) o6 b! z+ f+ F8 q
' ]( a# R: [% msetup-plot1
' t" }+ b/ m; B% [# W% D9 X: o- k0 }

* g  @/ S+ M4 W1 e3 Wsetup-plot2

' q; B$ d$ Y+ `$ A  G: K/ m! T7 b, R* B' E: \9 o  }; B0 [
setup-plot3
2 b% Q& ]( d( Q8 o1 V2 ^. S
end
0 X7 r2 J% M: G# ]% W3 r* Z/ N9 w& }' r
;;run time procedures3 T6 l' Z$ W6 {! p' F5 N/ _
2 V# I1 M% m7 s* a% \5 {2 ^
to go+ b) S0 q  q: {7 o) b9 R# F

) Q" y# y; |7 J+ Z' k# dask turtles [do-business]

* m- q0 p/ p+ w, g9 {, z# Aend; F/ f% u' B% m# ^8 w8 ?' a

; M+ P% f2 y, \9 S# e/ yto do-business
; B* I9 v' z9 c/ M5 h

; u9 C& y6 n$ N7 e; A6 G# J) ?  d* j9 B4 _
rt random 360

+ e! S5 N1 s# w  |; n- R- \# V0 |' y4 {5 p0 P- ?* A
fd 1

, Q# c1 j9 V6 C3 B! V  y  j% \7 U$ ?- [4 X7 `8 p6 |
ifelse(other turtles-here != nobody)[

9 _; S( z8 c+ d5 {7 g+ b  h7 L( B
1 e+ h1 E% ?" H8 eset customer one-of other turtles-here
8 f! f* q$ R9 N0 z

- |( l/ f9 v  {, a9 C;; set [customer] of customer myself
% R- U8 H# x' z7 p3 m8 P
# R- g3 e2 n8 J8 T" Y
set [trade-record-one] of self item (([who] of customer) - 1)
# ?5 C& t: i  `! V[trade-record-all]of self
" {: A8 k& p) h9 @* i;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
' O# a# ^9 m: R% O* V8 B5 s

) H  z; L. l, ?0 Qset [trade-record-one] of customer item (([who] of self) - 1)( F& c! p  e5 c+ {# N
[trade-record-all]of customer
' t& _. a$ N. u0 {+ r4 N
/ O! ^, z" z7 c8 L! p
set [trade-record-one-len] of self length [trade-record-one] of self

" E; Z+ O5 W  i; K+ Z1 n- g% h  w' g4 I; S# }
set trade-record-current( list (timer) (random money-upper-limit))
, n; @. T) K3 G& O+ y' k
8 Q. ^" n3 J, F% Q3 }9 W. {
ask self [do-trust]
6 M) f" W' q! Y% S;;
先求ij的信任度6 I% ^4 X' U" I' @

% g6 C* B! }+ r+ r. y9 O5 o5 Iif ([trust-ok] of self)
9 O0 R  p2 S& J" n. \% m/ U;;
根据ij的信任度来决定是否与j进行交易[
. Y+ n& x  M) V% ]ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
& Z' B" t, @! t! j2 H; P, v4 ]( E/ E( p- \* M. h4 o
[

: q' Y. ]9 m* I& l2 w8 p
) I. B# B+ ^( Z- v4 H3 |do-trade

) i, P0 e1 I% e- R& o$ o% ~8 }# H# @* N
update-credibility-ijl
7 f7 i7 ^8 O. s0 w" ~0 Q

0 c; p% t' y' w* R8 e) F* Gupdate-credibility-list+ R6 s7 K$ S/ k: E# Y; ]% z! O
0 f& I. G; a( m& q/ j$ ~3 o
. ?, Z7 v( V4 d/ K, W9 X# P
update-global-reputation-list

) {' @$ a. v3 f; S
9 \  F" d% u: u, z" D" Bpoll-class
' S: `- v# V! }6 U8 ^

9 g9 W! y$ P2 p% l2 I2 pget-color

5 ]0 X- A  S7 z2 \! u+ X- o' P7 T3 U& E
]]6 L0 r( ^& @/ ?; t/ B; D( T3 N/ W
  m: Q; D( q2 @5 V# F  c
;;
如果所得的信任度满足条件,则进行交易
% s. q/ X$ R2 ^& j
. g$ C) |. l: G- E3 |& c. W[

) x: C; h- e: ?: S& X1 x# h1 k9 u- R8 y+ c6 E5 N( @
rt random 360

4 ~7 ]" a: G* t8 v8 P5 m" J  R8 \. |# m3 L+ h  C% f! I
fd 1

/ ^( s: K6 c( L: W
8 i; H$ T, \( P, d' L" Z( P]
+ d# K8 j5 \$ N1 Z5 m6 W* b
2 g, c  ]: ?4 w& @; X4 f
end
0 K* e3 A' e% o3 r1 ^* f$ u

8 {3 q* t1 q. \+ t) N5 rto do-trust
8 i0 y, U8 w; a& \8 Cset trust-ok False
6 c& R! v# q" P3 H+ @8 @) Z" b
. N+ g# J: O' _5 u
9 z) ]! D3 K) r7 v9 d" R
let max-trade-times 01 j8 y- a6 k  O- m+ `5 W2 C* M# P
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
2 r) u/ w4 m2 e/ x/ C- P+ i0 {let max-trade-money 0
) e% {. l6 r6 ?# _foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
: N4 j2 U5 c  I" e! f2 R# i8 Xlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
7 R2 l7 O7 f/ ^. ~, Z! T% b# M9 q
4 P2 M, z( D- k: \" `+ t
get-global-proportion
! q. j2 k+ R1 k' N! ?2 flet trust-value
/ @6 T! F* C# b& F  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)
6 o0 A, z( S$ F6 ]$ t' z
if(trust-value > trade-trust-value); E  R" ~1 p# I6 Y" e/ \
[set trust-ok true]
- [' S0 z/ b5 [1 P7 D! Qend5 Y5 d3 B- A) r+ r0 b" X

+ w7 Q5 v& @8 ?to get-global-proportion
. N) {5 ?5 w  O3 ]& M0 N& Rifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)* X. x* _: Z6 }5 y5 y: w- [5 \
[set global-proportion 0]+ j9 v" l1 X4 ]7 m; i0 ]
[let i 0; B0 N' `. t6 E& v4 g) I7 C2 X; M  u
let sum-money 0
3 Y2 D& y# W1 E- s" N/ Owhile[ i < people]: J0 ^- N0 J  ]* H* z1 X
[
- P( L: s9 r: F. U$ f4 Bif( length (item i# N) L7 Q) ~. [; p- k
[trade-record-all] of customer) > 3 )

" a. E- y3 L$ s[
" P5 g2 d/ M% S  X( ^set sum-money (sum-money + item 2(item i [trade-record-all] of myself))4 O# Y" `1 o( M
]8 d6 {1 p* `/ v/ j5 {* D0 D
]
% m- c2 K4 G) ]3 Glet j 0
2 P- I: ~/ w0 h. M, `# q: A9 i* Zlet note 0
) b" V) `& P/ Y  qwhile[ j < people]
6 F% O% o' P* d, |7 ~" d[8 M' E- b0 U& v* Y0 k4 C
if( length (item i
) Y- y% e6 U% |6 b% G9 w[trade-record-all] of customer) > 3 )

% m3 _; {) y2 }- `& r( D# v[8 I* N4 H  g0 h- l: w# }2 D- C
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)7 e# `3 W2 J- m) f
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]/ s# q& s. m$ t, T6 W
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]$ q% h2 ]. I6 c7 e9 L- I
]
6 L  m8 r' M0 X! ^0 X- F) X& g]
$ ]5 n6 L1 B0 e2 z  oset global-proportion note
" M' e! ~: O5 b9 M7 l& X]
6 _8 F8 ]5 U9 O2 K9 R) fend$ i' w; x3 M$ M5 n
1 ^/ O  P8 D. ]! f1 @: J) ?
to do-trade
& S7 o& q; `& F/ W;;
这个过程实际上是给双方作出评价的过程( T' `+ W- ]( l8 O
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
: q) ]5 v/ b, p, u& Fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
) f2 S4 U1 H3 _0 E* x7 G! Rset trade-record-current lput(timer) trade-record-current
4 q0 a+ E8 ^  d8 h;;
评价时间
3 B1 }5 q- B* T3 ?7 k1 A5 Rask myself [0 \8 J/ `/ c( _) E' Z
update-local-reputation) ~+ w; u5 [2 {" @
set trade-record-current lput([local-reputation] of myself) trade-record-current
0 z8 {2 o+ y6 {$ G; o! A7 t9 e]" m! l6 J' w# [; t  O# M
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself9 m) T6 @* q/ ], f: l& d/ j
;;
将此次交易的记录加入到trade-record-one/ }  b  R: p( o) o, q
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself): |$ V* K6 L2 x/ C; K0 s! @2 g
let note (item 2 trade-record-current )) a' J7 ], {  Q7 x
set trade-record-current! X- c! ]5 x. W) o# b* V- d
(replace-item 2 trade-record-current (item 3 trade-record-current))

# x! L# `( G# Y$ fset trade-record-current
% t" i: q. V2 J3 K(replace-item 3 trade-record-current note)
; {% B' E; W) |
- S; z, N6 S+ X) l0 {& l- \
) i9 i4 r5 k( y) o! s& Y. U
ask customer [
7 ?( Z& ]+ y- u6 cupdate-local-reputation- Y8 a! I6 W7 g# k
set trade-record-current
  M, N( }% d: O- ]* O- K; Z(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
0 ~' o) A+ c9 ^$ J5 o( k4 v
]0 w" _1 ]3 r$ E3 x4 ^, d

' i, [# B% Y5 _* M9 d( y4 W, ?* L$ T

- U) h, p2 P$ Mset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
; G  I( D5 z: v% v9 z& c9 j

! ]" j9 C5 }4 v5 g- vset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))4 C' r* G2 r/ \6 t
;;
将此次交易的记录加入到customertrade-record-all
! }+ B5 r% `% G+ y3 m" W6 uend
1 u1 \$ F9 v, ~4 T! h& S1 `; C/ \! f7 C; u# c5 x; l5 C
to update-local-reputation1 Z' c2 I! q4 [( e
set [trade-record-one-len] of myself length [trade-record-one] of myself
/ G# q  G" |3 N, H7 O0 Q( }
  w9 @5 m" }, m0 j" k. O0 g$ s) A( @  ]5 c6 e& U( ]
;;if [trade-record-one-len] of myself > 3
5 X* j6 p9 Q4 E( ?4 p  W
update-neighbor-total
$ p$ `3 F/ N( E! M5 E7 L: [;;
更新邻居节点的数目,在此进行
3 q: s/ Q' B' R. r8 j8 f, n  `, [let i 3; ?- j; J7 W8 G1 ^1 ~
let sum-time 0
3 I1 Y0 x- h8 Ewhile[i < [trade-record-one-len] of myself]* T6 r2 ]" t# z: W4 j
[
% E. I: ~8 J. j( R: pset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )+ q+ [7 N: q& E# p
set i( \" z8 u* g5 n* `7 @4 p
( i + 1)
) \7 M7 D& {+ @( _
]' b' t6 ]9 O# B& b! |/ E7 [3 H; s
let j 31 V2 z; f# Y& r! J8 k% W3 h
let sum-money 0
; }+ ?! F& X8 `" n/ M* jwhile[j < [trade-record-one-len] of myself]
( `& s* e$ z! w  g9 C4 }' S* p+ T[
$ Z2 ]! ~2 a; Q/ P, ^! W( Pset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)* k2 Z1 `& _9 j9 D
set j  k) E; u, E2 _8 j* A
( j + 1)
& Z2 j6 b& Q( N4 j( h! z
]
$ {- g% [0 J6 A- v) \4 a# y8 Vlet k 3
9 r, V% B- P3 t% O# }- g3 vlet power 0$ b) N2 D2 K7 A# I; v
let local 0
1 I, f! v! R- b+ a7 Twhile [k <[trade-record-one-len] of myself]
8 `$ ~1 G5 Q6 A6 q: T  I' {[- R- ~! a; {8 g; R
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)
9 Y0 F  }7 N) u5 j# k; Z! _set k (k + 1)
+ g9 b4 X9 q- V. V: d]
' M6 {1 l$ ^' A& H* I8 r" P" Bset [local-reputation] of myself (local)% u$ }& X$ L. i+ J7 v. E
end! m8 N* {% e* ?4 Y5 I% R
1 K0 Y7 E4 t3 J6 O
to update-neighbor-total1 R+ p. _; }1 H( E7 D

3 Y! c) E4 j) W2 h( P- Kif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]% G% U: n& e) a5 p9 l( O. b
. c: e. }6 q6 n/ z0 f

1 D: J0 d) e5 `; ~end
3 k. Q2 F/ X7 i8 v" p3 y
/ E6 {6 Z! w  T: Z% e2 _% k; ^to update-credibility-ijl + s/ y3 M2 V  C# M0 ^
* B! z: `3 Z  V4 F: ~
;;
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。+ v( a5 o1 H- N% s# j
let l 0; m  t: _0 K, i0 A' D3 M
while[ l < people ]
; W5 N- o- b. m! q. Y) Z( h3 y! y;;
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! S, [3 W) Y6 A& ^. m/ o) P
[
. C9 R+ l4 j# h2 G$ K) g# Dlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)" s; j: X5 P' N; Z. j" U7 d
if (trade-record-one-j-l-len > 3)
2 y' V* G6 q5 A[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
7 J: @. P+ h2 `1 ~$ r% |0 xlet i 3
( F+ ]& F  Z  X. m* ]! a( elet sum-time 0
! [% i# G2 r- [- a8 Lwhile[i < trade-record-one-len]
( X" F1 p) u+ @+ E[- U+ x, `3 B6 S- R/ D
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )8 n) m  k$ H/ }5 m8 ^" ?3 h
set i. [/ K( G  h/ H8 U% z* S' L! A$ J
( i + 1)

5 Y7 e) J0 I' V]- z9 ?# U! s' _9 l( |1 [) ~& F' @
let credibility-i-j-l 0
) p! Q) s& f8 t3 \5 V;;i
评价(jjl的评价)
( `7 @* a, R3 L* X7 E( Glet j 3
7 t- n% |' d) p+ Ilet k 4, N; `5 d$ P1 a; g9 _  o6 G
while[j < trade-record-one-len]( c, w; Y( S1 o
[
/ s+ Q& @  Y. owhile [((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4 h1 L/ @! \  q) G% W# R! C$ z
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). ~) n9 q; N/ Z) J
set j
! M: }0 y4 ?* }" P( j + 1)

2 V8 ~* D4 L4 [! ]- G9 []
# B, t& ]) n6 T; u: Vset [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 ))
; ^+ [* h- \& s0 {; E% O) q# i
: c% E- Y6 b3 _% D& _
% R1 @9 [( V; p2 K5 k% g# d
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
9 e  K6 A6 |" y1 |3 K;;
及时更新il的评价质量的评价. }# A! f: D  d5 p4 G* t. h
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
7 c7 j  B1 C/ tset l (l + 1)( E* E0 z6 P, F9 _! X" n  ^
]
$ q0 ~  N5 [& I# I2 L, mend/ z$ D3 z/ t0 b/ u( H0 }! }( a

$ d+ w8 w& M" a( Hto update-credibility-list1 t- V& Z- H- ?& j) Z5 R
let i 0  R% K+ M( [- i+ ]# F* x# @
while[i < people]; P1 @! q3 L* ?6 G( a+ t/ e
[
! s+ l7 k& B8 w3 D7 b  f( i. Xlet j 0
8 B) K4 t5 Z# |$ H( c9 D& tlet note 0
. z  Q/ r2 i; t; z0 Clet k 0; M% O+ |2 ]2 H% R* r9 Y4 D' t
;;
计作出过评价的邻居节点的数目
4 L8 ^) n  D, t* Gwhile[j < people]  L0 L. {  i# T- {
[
% f! o0 p4 t7 U. Sif (item j( [credibility] of turtle (i + 1)) != -1)* s6 `) m0 p6 Z4 j( [  A
;;
判断是否给本turtle的评价质量做出过评价的节点. b/ @1 m6 R' p; b  f
[set note (note + item j ([credibility]of turtle (i + 1))): e. Q0 u* w' v5 N$ E
;;*(exp (-(people - 2)))/(people - 2))]

& C3 x) l- u9 \3 w4 P' lset k (k + 1)
2 K. b6 _" ]  Q0 M  H]
, a. Y; L! i& ^4 J. D4 w2 z% o* {0 Eset j (j + 1)) a7 U7 b4 o+ X( ?
]- p: h1 J6 Q# M2 `: O
set note (note *(exp (- (1 / k)))/ k)
9 J7 b7 Q9 E& V5 j# u0 dset credibility-list (replace-item i credibility-list note)6 ?* Q/ V- t- h- E3 X$ M9 `: R* t
set i (i + 1)
; ~! k: O; a8 d5 B]
  e" d/ @/ A1 A  i( |6 ]0 Eend
. l5 v% {1 |. m' F) V
( [' T; }) g8 e) sto update-global-reputation-list" t( I& S' P( m9 K& U. Q
let j 0
# B& k9 ~- q3 P. Y8 Z% J1 n) \; |while[j < people]4 Q. z: G  F# t3 S
[) j' l2 ~/ I2 x, A
let new 0
% W! H5 w4 T4 `5 O( Z* ?;;
暂存新的一个全局声誉
8 x+ J' _# B9 p3 k: A/ T% _* glet i 0' C# G5 [; L: O
let sum-money 0
1 f9 C' R& k( E7 {' Qlet credibility-money 0
! ]7 r3 Q* t* a- Bwhile [i < people]5 W' y. f) N1 x0 e
[/ S6 s* g: z$ ^# T+ c
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
: _8 {6 c$ F1 z3 a2 h+ Xset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)), Z) a0 M. J; Y% u5 G' b/ c
set i (i + 1)
# N7 c4 p/ }4 x; i2 C6 ]]0 O2 r8 s% g0 i' G8 W2 g6 Z1 F
let k 0
$ C/ F% w  l, Y3 o5 r6 J! jlet new1 0( P& {6 A6 I3 ]
while [k < people]- s# \0 K' d0 C, s: [7 W" w$ A+ P! ~
[
3 r+ f2 |! F" rset 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)
5 X6 C' A( |' @7 i# O# fset k (k + 1)
/ M$ W& x, l! [# X1 {* _]3 @: n( I( E; n$ }4 Q* R) u
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
6 d  z# ^. m# u! ~. H; h0 Rset global-reputation-list (replace-item j global-reputation-list new)" u* d4 [# d6 X& S: b
set j (j + 1)! F% Y( g* \8 \& t! C
]
7 X, s- t8 F0 s; y) Nend# i3 n) R' U' A( V

2 a2 t6 D' r! N+ m# m' M
: Z! p' L9 g. p7 q2 @! \# Z1 x5 h5 k( c& a* Q( W- ~
to get-color
# i/ y( k3 _% O  A$ S5 r2 P" ?9 A* p7 P1 m
set color blue

& f. g' }- a) Dend# l: m2 I- ^, Q& x
3 J/ ?1 O$ d7 c0 P$ _* B! ?% p; O
to poll-class
; ^; A/ L" ?' K4 |" g! i1 [end
& E/ K$ |: [) E# S1 B# c( K
! {7 _9 c2 k. t  Qto setup-plot1
  n6 A5 ]- [! H9 [# c' n# m5 D8 C, }# n7 T( O
set-current-plot "Trends-of-Local-reputation"
9 P$ S  p) D# }8 g6 w

/ w( K4 L8 Q. [6 E, d$ S" Kset-plot-x-range 0 xmax
, Y) C/ {/ K% x; V+ A0 \# a

6 ]7 `' ?) I3 e2 s+ K1 jset-plot-y-range 0.0 ymax

  J$ b3 H$ |2 |* p" rend
1 h+ h0 `8 m7 b
4 i5 n1 T7 ^( L. U0 zto setup-plot2
, `/ f6 E3 b/ Y- H: R) q, y- v2 }0 D2 `6 I
set-current-plot "Trends-of-global-reputation"
0 |* f4 `; j2 A( o: o

' J3 I8 K6 T0 ]3 Vset-plot-x-range 0 xmax

9 X( e" D) m6 g; l* o# z. B! e8 j& l9 T$ I8 H* s- `
set-plot-y-range 0.0 ymax

) y) D" }) v  G2 J5 N/ e% Uend
$ B" S, n5 p4 {, y
. H9 K+ D8 Z2 W) y2 uto setup-plot3
4 t' ]$ F# B' O! u3 v/ R, g8 P$ O. I  F5 O# N! W- h
set-current-plot "Trends-of-credibility"

' y1 B$ g! b9 B7 l) a) s% T3 x7 c; M& K5 c$ B9 ?8 A
set-plot-x-range 0 xmax
3 _0 f% A7 |0 w9 E' R/ r  f

) k) T1 c/ \9 Z! V4 xset-plot-y-range 0.0 ymax
9 e+ }: l" Z3 s7 K: o. ~
end0 \/ K6 h, \' g& X

# m( n3 ~, j( Q+ u! T0 `to do-plots/ P" g! X  ?, @6 P4 v- `" y+ c
set-current-plot "Trends-of-Local-reputation"9 T8 `; K* a+ G4 u5 a+ V& p
set-current-plot-pen "Honest service"
8 p6 L: _6 z# z( N7 hend
2 h$ T8 D  v3 Q8 G6 B  C/ ?5 N" r' ]6 B8 f# D0 v7 K" b# ]+ K) X" ^
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.  S( U! C' T2 ~$ e

9 [# N  E% w7 k6 c( p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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