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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:
( [( c7 n; F. j/ x1 Gto do-business 0 }) W3 N* ~  k* n& z$ @
rt random 3604 `8 ~& d1 L* c
fd 1* \1 p( k( B- I7 z
ifelse(other turtles-here != nobody)[
. k- A/ T6 u( m( h2 c8 u+ R   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.
/ S* R( {& b) s, z, f   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
9 V5 p6 G; \( B   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer: k5 |! W' J; w: y" @8 A. k6 u5 k
   set [trade-record-one-len] of self length [trade-record-one] of self' I6 S% o5 V6 k& r, z
   set trade-record-current( list (timer) (random money-upper-limit))# D. J' C$ \7 E2 m& P+ O5 t: u
5 e' o5 j" j/ b4 V; I
问题的提示如下:
4 S0 f% t* T$ G! B+ F' i4 o) @2 f) A6 B1 G9 w8 t& y8 m
error while turtle 50 running OF in procedure DO-BUSINESS
/ n7 o9 e; w3 |4 L3 o  called by procedure GO/ U' e0 U& o- d" v" I) C4 u* t
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
* F* R0 H% g5 L
(halted running of go)0 l8 J, Y4 ^3 Q. |( z! W
3 G. r, D) r0 s  w( I/ G
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~~
0 f9 O: H0 Q: ?9 m2 W" ^: U3 q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
9 i7 F# X9 a  {. Q" t7 J/ O  Tglobals[& m3 ~4 C* I" ^. y) m
xmax; C" `4 H8 f+ m( u
ymax5 e1 [+ \4 |; J, s/ ~4 L; O
global-reputation-list7 N2 ?( i& a/ E
8 }5 \# U7 f7 _) }6 s5 L
;;
每一个turtle的全局声誉都存在此LIST8 i+ h/ L2 y7 P" ^
credibility-list
) Y+ h' [: N6 ?1 ^9 K- e" g  a;;
每一个turtle的评价可信度( B& _: y4 E/ _( ], r0 n  Z
honest-service- }" b* N0 @- h$ [* |4 f& P1 u
unhonest-service; O1 Y3 _# C$ l, j) a
oscillation; B3 X9 R# e! ]- f. U
rand-dynamic  J2 S) q% f! }5 p
]
$ x; {- W6 F# [' @$ F0 V5 b3 S& D% o( x/ H7 G$ i3 ]8 |5 n
turtles-own[
  g- d3 H3 n4 G- u# L( ltrade-record-all, G8 D0 t/ O0 @) V; t: K' X
;;a list of lists,
trade-record-one组成
, q" U! ?8 L* ^" g: ttrade-record-one
9 k0 Z2 `, Q7 H# R8 V;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
. f( J7 F% Y& r, j( t, U! K4 |0 y( s+ B
;;[
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]]
+ o, L$ V7 G" wtrade-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) L8 B5 j+ L  _+ A5 T
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" z2 P+ Q% S2 [9 h
neighbor-total
/ ~+ c4 ~6 W: ~; R! N/ B;;
记录该turtle的邻居节点的数目
: Y3 m3 ^9 V* h0 Ctrade-time- q9 X. V$ X# P2 j
;;
当前发生交易的turtle的交易时间
  u$ w: I3 N2 g, P+ }# r) zappraise-give% S+ F$ Q: ^7 c3 O; J( W" _; a% S
;;
当前发生交易时给出的评价# ?) K" K  C: I
appraise-receive
4 F( c8 f$ p% b9 v;;
当前发生交易时收到的评价
% e" [8 n* U: p7 _' [appraise-time6 N2 ~( l' Z0 l9 U
;;
当前发生交易时的评价时间+ Q  U  @- M6 t  E
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
3 f/ [- p9 C$ n1 a1 V( ftrade-times-total& n- E! S/ t- U$ N# k1 y
;;
与当前turtle的交易总次数
3 V7 s, Z# }% y$ q+ T- Gtrade-money-total
% c  r5 v8 L& e! L- U$ x3 o;;
与当前turtle的交易总金额- c) [  T, @1 T7 m# G
local-reputation! v6 I7 Z2 D/ I! L+ f8 U. G
global-reputation7 ?8 c4 s4 l" x9 V% n
credibility# S$ P* q9 m. I
;;
评价可信度,每次交易后都需要更新- E& n  U: ]7 w) @' M' y* D
credibility-all# K( a+ C" `. Z$ u6 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
# C: M" {6 q8 e- z' x% ~- ?' t7 R% P5 b! j
;;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, a9 S* b. G& ^8 }7 B# ]# i* ~
credibility-one
/ |. J7 {" U) \: p;;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
* ~* k  z( k/ E6 H. ]global-proportion- K' a' p+ i6 C3 k5 ~
customer
! L& |! I2 A  f+ e8 {+ k3 acustomer-no$ f% _% h7 U0 I6 b2 F  z
trust-ok- |& s/ ^4 J3 d, H8 U, ^1 v: J
trade-record-one-len;;trade-record-one的长度
( n: F. e8 Y1 u) S+ Z]
5 D5 G6 B1 k( G3 C( B: \0 Y  N/ ^: f; f/ a7 c$ b6 o% ]1 y" l
;;setup procedure
& d; D$ ^1 b' z0 n
4 S) {/ M: @  }% Eto setup
# H" a* D/ K# ~# r: g1 L9 n. q, J8 p* M0 q8 M) [/ f4 e$ I
ca
  {( d" a" T, b, ~" M& l

4 i, |  S7 n* p9 n) ?1 r% minitialize-settings

: i0 f% ^4 D9 a/ L5 L$ Z7 L% K& k: d$ n& Z" C
crt people [setup-turtles]

% q; }! ]6 Y5 C# s$ J' s0 w2 z  c4 d) w' [
reset-timer

5 G7 N1 l& S0 @0 M6 ?" d+ p8 ]; Z2 G% U8 }! ?1 |9 \
poll-class
/ [% E5 |. O- x) X" ^

. e& I1 R; L% W$ ysetup-plots

9 E! A' c1 ?. ]7 c9 w0 H% s( e7 z% R
3 K* \5 I, J# B0 M. g  jdo-plots

7 ?+ K) I& G5 m: N- E' O) m( |end
3 B* H7 M' N% J( i' H& t
+ c5 l& n; _* A. d8 ?to initialize-settings
" W  C1 t2 j, p9 n7 i( T
- o& Z; Y* [1 Y( Wset global-reputation-list []
! D7 T+ z8 }% |
1 Z2 j, R3 Y9 @" {0 Y$ k
set credibility-list n-values people [0.5]
( H* v0 W- L; l2 C* O

7 Z. T) q! q2 ~set honest-service 0

8 h4 E0 {, d5 `$ g4 u: N3 @  h; {3 v9 ?6 v" L0 H; L
set unhonest-service 0
5 d( Z$ x8 y: l
5 t% _: s# P& {% I
set oscillation 0

: S# M2 G: {, U3 N" Z& }% c! \! B8 F+ K9 z" |; z  x2 M
set rand-dynamic 0
& a2 Q4 m1 e) m
end# Q& x7 y" b* a6 }* V

# }& Z% c5 Y4 z+ r, qto setup-turtles " c+ q6 G; ]. ~  B( @$ i; k
set shape "person"7 m6 \! C- s0 u+ }$ z2 r- I- d2 _
setxy random-xcor random-ycor
; I4 p7 p9 v& Iset trade-record-one []
: _: i. q, F7 V( P8 F4 S$ r( e) v

# N' l' ?+ Y& R) uset trade-record-all n-values people [(list (? + 1) 0 0)] " y- A" i9 f8 ~5 j+ l
7 g# L2 o0 v+ h
set trade-record-current []) U# @9 {, p+ |- e2 V
set credibility-receive []0 |0 G: G$ v4 _1 G9 M! c$ b
set local-reputation 0.5
% I. H; v6 ^0 `4 K6 _( \  aset neighbor-total 0! c4 K! F1 i( @8 Z& l% h! `+ q
set trade-times-total 0
1 j- Z; Z) I: lset trade-money-total 0
) M- M0 }- _. y% }3 z. q3 hset customer nobody2 o# k8 J# e0 v; N; t1 _
set credibility-all n-values people [creat-credibility]/ m7 P6 |+ G) Q+ p1 M# r$ M( }# o
set credibility n-values people [-1]
8 F2 c( S% q6 J+ X+ ^/ k0 m; xget-color# C4 [0 l" N* H0 T- I

) \  S* l$ v3 [& v7 a# v* eend
* `9 M& f  n& P$ |% d  T, r
- R0 ~% P: ^3 p4 i" [# R# c" oto-report creat-credibility
5 v/ Q( X. m- g( Kreport n-values people [0.5]
$ M+ e( P' S8 q1 N5 |; \: S/ Pend' n" S$ v" N& X( w+ {# n2 x, M- `
5 o; H% P6 s$ V7 C2 @
to setup-plots( j( Z8 [- n9 j+ S  F

9 S4 U9 A  g" {( X! X, g2 k; rset xmax 30

$ x3 \* O! l4 R# j* J+ s
8 \% }% M0 L3 f1 b) _; Kset ymax 1.0
; R$ j4 a- z  i/ R

+ r" W# i9 ?% q9 g3 p* ^( Rclear-all-plots

4 a5 d7 u: f! N, b& u. Q+ n( w. ^1 K* ^; `# s. _; e& f7 b
setup-plot1

) S& r: h6 g4 B% _% T# M- f0 Q" o: s/ O, u1 z" R
setup-plot2
* m: V8 i7 R% h
. h# J6 K! o% B# m
setup-plot3

; k5 @8 S* ?0 x- M5 kend, `5 P& f- ]3 d

! U- k- ^2 F" R- d0 m) j;;run time procedures
' u! H- l# ]; z4 Q  {- e0 t0 j' ?6 j5 L
to go
7 f4 s& m# V9 |* ^+ \+ ^* ]# }' Y+ p( k* w  F& `* P/ @
ask turtles [do-business]
3 T: C. C" Y& p4 g9 S! w
end$ X6 L* @0 B# ?* [6 L

; b4 K  w/ p- B+ B! M: I$ nto do-business 0 r0 @1 [- I6 m. n+ m

+ }- j5 \# _9 ^  \
+ e7 T' a. k; P  i) art random 360

- M# D+ b( A. n( R, \1 i
& o% r' m+ C/ Q% p7 Q( dfd 1
- g/ n5 I4 F! T7 `: @2 `
5 K/ ?: Z* W4 O# ?' n1 b
ifelse(other turtles-here != nobody)[
& G! O# ?' n( g. ?

, f0 i5 M7 N! ?- q; U  qset customer one-of other turtles-here

+ k7 l* N% ?" K' Z; c! ^7 ?' n0 D6 J' R
;; set [customer] of customer myself
2 t* g! O9 U" @) T

* H8 ~# N6 g1 J& A( uset [trade-record-one] of self item (([who] of customer) - 1)5 p* `/ s  _4 {' W9 i  e0 B
[trade-record-all]of self
6 C: ~4 k, z7 }9 K# n;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
1 z$ d5 C4 H" }. b
# E3 n% v( E! R1 t
set [trade-record-one] of customer item (([who] of self) - 1)
$ x. T% k* z+ A* L; f$ w" Q[trade-record-all]of customer
2 g. r$ E+ E- Y$ d/ |

' I  |' @+ S: M' H- u& T& `set [trade-record-one-len] of self length [trade-record-one] of self
& p" I% I, Y& [- b, t, H
/ l! m) _; g# z
set trade-record-current( list (timer) (random money-upper-limit))

/ A5 X" ]# E' Q2 o8 n+ H
6 g( i% e6 |2 n2 f0 M; V8 d5 \# Zask self [do-trust]
7 P8 N6 {7 n6 Q2 Q. e: U;;
先求ij的信任度& B7 r& n6 o4 ]4 a1 M; q- u
* S  T' w; u' g! |6 [. \" J( p
if ([trust-ok] of self)
+ U0 y% J! \, P0 A) A7 n* n;;
根据ij的信任度来决定是否与j进行交易[
8 r& Q; f  A, ~- P; `! k3 y* cask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
- T1 o, P1 n  K: j' U5 t* g9 T- \3 q: Y& O5 L0 e
[
4 f2 {8 a* g) P9 t- C

( t+ {$ Z9 X# F( F8 ydo-trade
, \. j* P- H$ M% p9 X
  M2 _6 K* ^9 I. A+ n6 g  _1 {
update-credibility-ijl

' L9 K1 A1 w, m9 T7 R/ R
! j7 g' u) [& M* D, ~2 b$ J. [update-credibility-list% I0 {# l( g) T7 g, ], O

6 ^" S# A% {9 i/ u; S6 N* y4 }# P1 _5 y+ [
update-global-reputation-list
1 ~6 ?/ S3 X8 Z" z6 X/ x: C

0 B# S! V. \9 o& t/ `3 apoll-class

4 K' K- ~3 G; `9 U- i0 ?+ F& {8 j* l
get-color

, X0 x- I2 m0 Y3 a  ~' l' |( P- K' {  g- e# a9 V
]]# Z4 g% t( T& K! n+ z8 [6 V3 t

' B8 M( j# j0 s+ m( _;;
如果所得的信任度满足条件,则进行交易8 S( W  `/ d' n3 S% [8 c' ]

& Y; x- w  Y3 |7 _  C9 U4 k[

. {7 u% j+ u# K$ |  z) l& q" c; e8 z; C5 Z0 m: N- H
rt random 360
$ G" D" S) v. J+ y( w* P& I7 Q
7 q# F, t" G- O+ }4 r0 o  N" H
fd 1
$ `$ S  U- X$ Q6 }! }( y# e8 H; j1 d
, [- ~4 A1 a7 e- |
]

/ j$ ]2 V+ a0 F' o" @& i5 ~5 x5 k9 V8 f5 E: \& h4 u. I' \
end
9 P- x4 t) f' B5 J! U

- G4 p' p; X% Q5 O  l, i' Kto do-trust % N) \) N$ o( z2 o
set trust-ok False4 N, j- ?/ G( u! O
! z% k; E; _- n, S8 c$ G

1 ]! R  O- B1 U/ p! m$ Glet max-trade-times 0
9 a* G, g5 G$ t  [+ N  Gforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]) x( W2 T' E( A/ ^7 v/ W
let max-trade-money 0  R) [7 y4 J% h) M8 J0 y6 @
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
/ l$ M: {* ?% T+ D6 y5 Q1 s. K! Flet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
  q2 t' n# Z( }" ^4 V
" ~" M" v: a$ _; O( r4 b

! v# b5 d) z" qget-global-proportion9 N3 u( K0 N! W" o8 O- Y  i" J
let trust-value
1 B& T* K6 a- \9 Ulocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
. n+ b5 |9 o, T1 O$ \
if(trust-value > trade-trust-value)
8 W* ?. P8 H% F[set trust-ok true]
8 Q/ Y* d2 F* a* G3 Mend: a% f( V! k3 n1 I* R4 U/ v
6 I  J$ N( l+ d2 f" y+ O: e# o
to get-global-proportion1 k1 R1 r1 N8 f1 E& ]! @  v
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)7 s& M9 p+ n6 N
[set global-proportion 0]
) |/ g5 w2 n3 A& B[let i 0
' z' a1 K4 b$ w# K1 f+ [let sum-money 05 q# r! k0 c1 L4 f6 T9 R
while[ i < people]
: _0 I3 i) E3 l% p$ {% ^( H, X[
5 V+ C% e1 x+ d1 B, h$ t7 l$ fif( length (item i3 |- f2 S- d  z; F+ g" k0 {
[trade-record-all] of customer) > 3 )

8 V  a" g0 @! `; u& @" O[) W/ \4 f  G0 V% ?2 A; q6 x9 V
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))% O* t1 P, ~' N/ C6 z5 K
]
' Y+ F7 ?, h. b3 [3 Y]0 m0 c+ n* o: t* {% s! _
let j 0# I, X3 T( z5 d2 J: Q
let note 0
1 ~" v- M2 o: ]while[ j < people]
9 e3 E0 Z6 W9 ]) n5 o* y$ Y[- \% m1 ]4 s9 d
if( length (item i% a& _( S  d% j2 ~# Q
[trade-record-all] of customer) > 3 )
: y; @' R" _) f- ~
[
8 m8 j8 }1 o' R6 ^( p/ P7 B. Iifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
% q5 N3 s7 Q* q7 y[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]8 u. u8 q- F* x8 F2 a9 g
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]( |! B+ W8 f- F) O8 t* \& [
]% j) v2 _6 J3 g/ z/ R: E1 N' |" X
]# H9 G$ ?  B/ N0 D
set global-proportion note
& F) i% H; E! n) G4 N1 F$ y  T]2 t" V& t1 H2 d8 n
end/ y0 N! K5 k3 x5 c! y
( d# j8 M2 z. R' B1 i- \
to do-trade5 z; t% @& t" _* E
;;
这个过程实际上是给双方作出评价的过程
7 Z. g; O5 D& q; g7 _+ T/ c; Pset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价8 K. X$ R9 c! w2 B7 u% ^6 U
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价, V2 ]3 [: ^* K  I. e
set trade-record-current lput(timer) trade-record-current
* J0 Q6 e$ W: r8 j& N/ w' _;;
评价时间& z* I9 [; T- U* ^$ m9 `' l
ask myself [
6 {5 \5 P) M1 S) K' t/ J8 p$ W# {update-local-reputation
! |: E5 i0 Q: C, q. @- W4 Xset trade-record-current lput([local-reputation] of myself) trade-record-current; `& e7 Y" U' _" @+ H0 j0 D! r& W
]
8 E* i- f4 T5 e' p, U1 `1 rset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself6 Y: `9 d) p, g. P7 R1 K
;;
将此次交易的记录加入到trade-record-one1 t5 G8 r; w. \5 q# G: C
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
) Y2 H+ q+ K, olet note (item 2 trade-record-current )6 ^6 K# H8 ^) s4 ~
set trade-record-current  O8 G- g& n% Q- K
(replace-item 2 trade-record-current (item 3 trade-record-current))

3 L6 U1 F$ Y' ~6 b( ]set trade-record-current
  n+ ], R0 l# M2 l* N(replace-item 3 trade-record-current note)
( a( U4 m0 t% u0 m$ N/ V( C( B; q7 `

( J3 v: K) z2 ^; m- }ask customer [2 _' i* |9 T/ m3 @
update-local-reputation( q& c' {$ s! L" e
set trade-record-current
! D9 Y7 U- J( I( _6 |(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
5 m& i, F( E! |. f5 P7 x( M
]
0 F/ X6 |' ~2 f. N* f* j& ]/ |# y1 N8 O2 w  F
5 x' c5 Q2 y& `2 ]: i% }; x* A
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
9 _6 \$ `  f0 ~3 J1 k3 r
0 V& G5 n! u8 Y1 |* V( f' n) N; D6 c
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
/ E' O4 S6 U. D  c3 A: [/ f;;
将此次交易的记录加入到customertrade-record-all
( B+ w% ]$ P* Y7 Mend  }! L3 O$ A' ^2 i/ n) u7 ^+ b. @

* [8 n5 {3 Z, ~4 ^3 |to update-local-reputation9 p/ @5 A) W, {# V& Z9 M
set [trade-record-one-len] of myself length [trade-record-one] of myself
/ z8 s& j! I( [$ w1 H) y" p! y' G' v7 R8 x1 d& T( [
% o' x6 x0 {# E9 r" a
;;if [trade-record-one-len] of myself > 3
' M" T4 V" O3 P5 o
update-neighbor-total
0 ~9 y& A; s( o6 H3 S;;
更新邻居节点的数目,在此进行
5 F8 @; Y, {) U) P) f3 e3 blet i 3
) ]7 {1 q* H3 D( {  elet sum-time 0- }! A8 M, s" W* T
while[i < [trade-record-one-len] of myself]4 s8 h+ G) u8 i: _' ]* w
[
1 M$ G& o5 C8 ^; ?, wset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ); H1 ^9 P! E5 {* ]
set i
) w- q9 f, B: n- F+ D2 J  a& H( i + 1)

1 e& M" \2 h) {% w]" G- _5 g7 Y0 j
let j 3
! q; V% N1 r* p. C: w& t, `let sum-money 02 F* [7 [0 H/ Y3 D7 U
while[j < [trade-record-one-len] of myself]
3 T# V( e& H" k! J  [' u' S[
7 p. ?* K9 E' K. eset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
. Y6 G6 i9 V- J3 V# C" k# U/ gset j
5 t4 D  C. P0 _5 s( j + 1)

- d( @+ E! \* G$ _1 J0 k]
% X/ b2 ]+ S5 }let k 3, ]' n+ ?  q) t7 I& I
let power 0' `9 J$ i# n% T' o
let local 0
# v+ N6 w( S" _+ }: Hwhile [k <[trade-record-one-len] of myself]. B7 B  @5 }4 {6 J6 E/ l
[0 T" \% ]1 \$ f2 x
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)   a& J% i: z( ]
set k (k + 1); ^* @) L8 T8 _6 V/ i
]
6 T' {& `" u) H: u: C% W, Y( Lset [local-reputation] of myself (local)0 T/ a8 U! d7 ?9 Y8 a% o
end8 I' W& l% G# o7 F  }) }6 v: f

, o; P% L9 ?. V- A  z5 Gto update-neighbor-total4 ~( {( c2 a6 j9 z4 j6 O- z
4 f- d! f9 b/ x1 [" k2 t! ^2 G6 J
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]$ X. ]( ?6 P- C
8 g( m! F; N4 Q
! y& B3 Q7 p' o" x
end
# v1 E- n0 _% X+ u+ t3 Z" H  }! C1 s" Q9 O5 {: U1 V
to update-credibility-ijl 2 d' V" o7 G- k( m6 {
, l4 q8 [( T% j4 f% _0 N) _
;;
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。
0 y8 r. d% G: glet l 0, e6 s, O+ K1 o4 W6 V
while[ l < people ]
5 ~5 r3 J% W$ t/ k- e  B;;
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
! T' p8 Q0 k  k# k[) y9 C  Y- s0 O. m0 j+ K; k
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
  R* X* T( d/ ?  U: k8 Aif (trade-record-one-j-l-len > 3)1 {$ L0 p0 k7 g- `( h" }% J
[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
/ e- T( j6 v* }) ]6 o& Q. ylet i 3
$ G* F" K4 n& D* n( w3 flet sum-time 03 ~- m2 C# z" p7 Z# M1 z
while[i < trade-record-one-len]* n& a# Q" X- q
[
. ]3 c/ ]. t% p* I! z2 h7 Lset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
1 _9 P0 `7 ~- I% h2 A; a4 qset i
: v4 @3 A0 p! `( i + 1)

% Z& }( b6 B) R4 M]
- }8 |5 _6 D8 Slet credibility-i-j-l 0
3 W4 Z0 z$ N! U) Q9 w! J9 G;;i
评价(jjl的评价)5 e; t8 R0 j" D3 h
let j 3" p  q1 g, b: p! K. ?
let k 4
* b& W0 _3 _- vwhile[j < trade-record-one-len]6 F; G3 A$ O/ }- [6 {
[3 R: @# T. Q* J6 K& ~9 ^1 D
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9 I0 N) E! T2 P' K& C7 w+ h
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)
! s; a8 G6 k" o2 g9 F" E, hset j, X/ q  l2 G& U5 Y, s, @) [7 s
( j + 1)

$ B( ~& T, {+ p; v9 g9 R]+ J9 O/ x0 |# |) M" o9 r6 b0 U
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 ))+ m; Y; M$ s8 r  T- r. G( v  Z5 p
* W5 I1 T$ |7 |

( k4 I6 J" g# {; glet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ M- M" q& d1 ]+ [+ ?. O1 y- V;;
及时更新il的评价质量的评价, s. j! `2 i; P. l; S, e
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]8 [, h1 M: W# W, o/ S
set l (l + 1). I/ |$ a9 ^0 c% U9 h; i1 H
]
0 f% d# E! v: Z( \5 K2 l$ l2 }end6 o! P3 X" W0 F4 K

5 e( I9 X& ]0 S/ D) [4 Vto update-credibility-list
' M6 T( [6 ^) O  Q4 q0 Klet i 0
% b# }8 H9 C& w: I3 j" V+ G) _; Z- uwhile[i < people]0 F6 T8 |1 r5 z3 b/ d: f& ^
[
' `7 R9 n3 Z7 L% I% j5 Ilet j 0
- J3 o8 k) i6 e7 u$ }0 V, [/ vlet note 0& @) B, s9 [! d. f3 r+ U
let k 0' |' S( C* {1 ]) F5 T! r
;;
计作出过评价的邻居节点的数目! B0 t4 n+ w6 A" ]: Q
while[j < people]6 x  u8 J' |* H" A. O
[8 d+ c/ A. N% w( V1 R# s, F$ @8 b* @
if (item j( [credibility] of turtle (i + 1)) != -1)
* R7 N: s, y/ G* };;
判断是否给本turtle的评价质量做出过评价的节点
, q! L$ p3 f  p7 }2 K4 n, F[set note (note + item j ([credibility]of turtle (i + 1)))/ d8 h3 a" D+ b' x/ B5 T
;;*(exp (-(people - 2)))/(people - 2))]

0 v" Z7 Y9 `4 T9 [4 y9 ?) dset k (k + 1)# h+ S# v1 F" M$ k9 h( p
]" z  t9 I! ?, s& T
set j (j + 1)1 f( R* y) n3 X/ a  @# [8 W2 Z/ G7 U. |
]
: S/ V+ E3 y& D( H6 E& cset note (note *(exp (- (1 / k)))/ k)
% L" k% {5 e0 G( y$ v4 v1 Kset credibility-list (replace-item i credibility-list note)+ L/ [5 O7 G4 x- T" v. q1 M
set i (i + 1)& u- s1 S! d. Y
]
  V2 W9 g2 [  D( J" ]: Mend
- ^% l2 e, d3 L/ G5 F' O  N# Q/ I1 y& _) ~! r
to update-global-reputation-list2 h& Z/ A; U( r/ {/ H$ q- j
let j 05 a/ z+ I2 k( M" G6 N  _/ ^" H% b
while[j < people], V& [! q$ G' }) L( J. s5 K
[* o' l9 t3 B  c6 z( Y9 H3 H3 @
let new 0& P* h# n9 O4 `+ @1 b$ l$ {0 R2 s
;;
暂存新的一个全局声誉) }! c3 T* Q7 {; r+ [( S
let i 0
" w; r* B* K2 Blet sum-money 01 F' G; Y$ }( i- u8 ]! m
let credibility-money 06 B2 U  P9 D* t5 N6 {3 C  g* A$ C
while [i < people]/ N" Q5 N1 z5 i( n4 q$ X
[
' W* Q4 g4 f( Uset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))! N" X8 l$ X+ O* L4 b
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)); B+ @' j9 i7 |" P7 q
set i (i + 1)
! Q; F" F$ |1 N0 T) ~5 N- b]7 ]" y% q+ {! A) L+ b" }
let k 0( d# @  p3 \6 |) H3 \. F8 ?5 f. H
let new1 0
5 @! z: ~# r/ q3 Wwhile [k < people]* h, Y8 Y' o: N, n' l3 O
[$ S. Z7 ~5 L/ t* z- c* j
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)
, I1 ~/ C' }; H% w+ `set k (k + 1)! u, M2 `$ b2 ^& b
]
7 n) N% w  G  W* g+ Z  |set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) / @: E! C6 r/ u! [0 j
set global-reputation-list (replace-item j global-reputation-list new); }3 |7 G1 q) h: \- `
set j (j + 1)9 _  g% H# |2 [9 T
]* {  ?  |6 V) V7 v: `
end
1 I% s: O* B& A3 j% M5 S8 k4 R
7 s3 {0 X% B6 Y- v* K7 ]& J4 h; N  N3 @" n1 X4 }; c
& l" x" K! S" a# }% q/ C4 l
to get-color8 y: r1 I) O4 ]& i- Q) L# Z
) L  A3 L, q. Z/ O" w4 N1 o! U' X
set color blue
, Y' v' H; K% [/ h  F5 K
end
' [/ y* z! N* }( Z: r1 W! a8 \( r8 M
to poll-class
# A- V" `" S' C9 o3 a2 O* Yend% _5 [+ H' e) _- |
4 n5 a% ~4 v3 _" }0 z! P8 M; Z" Z1 N6 h0 t
to setup-plot1
) E# d$ n. G6 a4 O8 W7 b0 W/ B7 s' z7 L4 R/ X
set-current-plot "Trends-of-Local-reputation"
* ~7 M& p7 a! o9 s1 _0 O
" [" p4 F" |4 j- o( a
set-plot-x-range 0 xmax

) }- }6 u9 {' b( K
% w$ ^( U: A  F3 B  T: m0 vset-plot-y-range 0.0 ymax
, t2 w# g1 H* B  X& Y
end
; e# J. E6 ?" w5 s% W/ Q& X( H1 d$ ~6 F( ?5 n
to setup-plot2
3 J0 ?6 ~, K' Z" u1 L
) t) G8 L6 S4 _: lset-current-plot "Trends-of-global-reputation"
) `% j; t9 f3 v/ D  U+ `
' [6 X3 e% g1 A. H) G
set-plot-x-range 0 xmax

  x2 I  b; E! e2 E/ J
. D0 e( h2 o- \: v2 a% ^set-plot-y-range 0.0 ymax
$ {/ B3 B3 M9 v; W& ]1 Q6 f* O3 \
end
* B5 {9 t; s$ D% R3 s! W! ^4 @$ M( p# u) v
to setup-plot31 @; o% N& V/ }  Y( |9 |6 C

7 z" W% [4 V6 v8 q+ Q6 dset-current-plot "Trends-of-credibility"
9 C, b# N9 P4 U/ t8 ^! }! ?

, [0 m# r5 N& F/ l' g1 d4 l( Lset-plot-x-range 0 xmax

2 u9 R! e+ K" }# y
1 ~0 I7 V3 U4 @% Q/ `set-plot-y-range 0.0 ymax

8 K( \% U7 \0 X! R  y3 Z1 E( M. Tend
  R, i0 w1 T2 F6 A% }0 E; `4 i9 i0 @
to do-plots
# c- n+ W* p5 i* Oset-current-plot "Trends-of-Local-reputation". M. |" W, F6 G! ~
set-current-plot-pen "Honest service"9 v4 b, C- ?) H- F. Q1 }6 d2 F: X: S
end
- v  z5 {' C5 v3 i5 k+ @' `
9 {2 v/ N5 {9 m  @2 \- n# m[ 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.
3 H0 U- E  {4 f  E+ M8 J! c( _0 ~3 U4 Y0 D# P/ q  i, n
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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