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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:
; X! A  q' {1 |; M. I' y$ [to do-business
+ I3 ]* X3 ]: o- r rt random 360
- u/ I! F# A& d& y" L fd 1% f% E: h; g3 A) g6 T. p
ifelse(other turtles-here != nobody)[" u& B0 n5 ^# n3 O4 S& Y7 L$ u
   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.
8 X: K! z! i1 A+ o; E   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    4 |+ i0 q! B! Q6 r$ U
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer# e" x+ |$ h( z
   set [trade-record-one-len] of self length [trade-record-one] of self, @4 I' f# Z7 q: e/ |" y7 J
   set trade-record-current( list (timer) (random money-upper-limit))* a7 h* I( ~) M8 \4 ]7 k
/ x; g6 T' ~4 I1 j* m5 o
问题的提示如下:, s9 W0 d" r1 j. y6 u  I! A; U
0 r; ~/ a& z! \- }( T8 w5 I1 T2 a
error while turtle 50 running OF in procedure DO-BUSINESS
( \& j1 u- R$ z( m2 n. K  called by procedure GO# @# a0 c/ C+ f7 r, |
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
3 I" h: A* s7 t6 R/ `% M8 j6 q: ^
(halted running of go)7 ^2 c$ b3 x  p- P5 y2 {" O
, o" F) g) a8 @! N* 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~~
7 m0 e! u  n4 ]5 X5 W$ d6 p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 J  U; M2 p% a( Y, cglobals[' p) y% j  W. B9 e. v. c, K3 T1 _  B6 ^9 W
xmax" R. Y# i* b( S$ y
ymax
, O" ^% p, G4 e5 a2 g% {global-reputation-list
, @4 h) p, K& V2 V1 {2 }* R  b. f9 _) ]9 Z
;;
每一个turtle的全局声誉都存在此LIST
2 L, W( X. ?! _1 P1 lcredibility-list
3 K8 C4 S( K) ~) [/ `$ e! P, Z. ?! J;;
每一个turtle的评价可信度2 S1 s+ I2 n6 _
honest-service$ X! j4 W  K+ z' v* X9 J" r2 x
unhonest-service, v" w1 }% _% M5 S" d2 r( [
oscillation
, z$ e1 ?  \- f7 |rand-dynamic
9 F/ K" h, W% V( m' |) \! s]% \# A( E; W( m/ |, t/ }
  a8 N( L: E* [) \9 l& _8 T
turtles-own[. m. a9 T' F  M' f2 w
trade-record-all* E! G* y3 B' _2 ~: @& L5 w8 H  l
;;a list of lists,
trade-record-one组成
9 c3 w$ p: L3 N3 A" W0 F- Otrade-record-one
0 d8 H' ?# S& V; D;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录& D/ }$ I' @" ]4 |, S, c. Y8 L
- y$ B' u, v: g# O
;;[
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# J3 P" G0 V/ C( I, ?trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉], C3 C8 z9 n$ e& D! ^  B
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
% g# @5 Q; }# O  e* I+ \neighbor-total; }' i" C  V! {7 x$ Z8 S( r
;;
记录该turtle的邻居节点的数目
1 o" u; |3 ^2 x5 Q+ Ltrade-time* D4 Q9 m2 r9 I2 K5 [5 D5 ]1 e
;;
当前发生交易的turtle的交易时间  g5 O8 b$ ]6 K5 A
appraise-give
! s9 O2 }# @/ c3 M;;
当前发生交易时给出的评价* [! l* e; g- I3 n% }
appraise-receive
; ?% y, M* b6 k4 T0 |* I;;
当前发生交易时收到的评价
. W( C9 }/ `% C6 z6 _appraise-time" d' ?5 ^3 k; ]1 ]5 W2 I
;;
当前发生交易时的评价时间3 a0 k$ I  M) Z
local-reputation-now;;此次交易后相对于对方turtle的局部声誉$ d3 G$ _/ J# ?6 t
trade-times-total
) y, \- M! c" o3 o0 Y;;
与当前turtle的交易总次数
7 z+ H  b) J+ S. ltrade-money-total
3 w% D+ Q% n( u6 M) W;;
与当前turtle的交易总金额; Q8 A- v% B: c4 B4 @, u& p. A" `) O
local-reputation8 ?% I/ [0 C2 J3 N# t& t; ?
global-reputation
0 ^8 e0 w, m  r! P: N$ V; dcredibility* v7 j( E0 `/ {  D- T5 T
;;
评价可信度,每次交易后都需要更新
$ x9 i$ x  r% n3 {7 G# O+ K: icredibility-all! |/ H! P$ s# _0 T4 l: k- ~/ d
;;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
, r5 h( [0 |5 B9 D" x) F1 _# {
4 p$ `5 b' Y* i% b" D: N" S;;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
. O; R; w( C0 g4 N+ Tcredibility-one8 |! V2 p' M8 n
;;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( ~& x/ d6 v" B. m; l0 t8 i0 F
global-proportion. F& O. k. I. U( J  g& P9 c
customer, y: B) |$ J; Y$ |& d, K$ U  ]+ w' f
customer-no1 Z* r7 Z$ m  m
trust-ok) b, j. s0 U+ o1 ^4 ~7 z/ [
trade-record-one-len;;trade-record-one的长度
( H+ Z) T, B8 o7 s+ i  C9 O9 p]
; ]* w+ o. `, \; W; X0 ?
& g/ i% T! [4 Q6 @9 O0 F;;setup procedure3 P# l" }9 h4 c% K/ n9 S+ X# p  K
' o1 h$ v6 n% M& m6 L" K
to setup
" D  F/ i- s$ Z  \* X0 }  m6 f; V: E; N* y. h
ca
( Z3 H7 H( U- ~# x2 o2 ?, l

9 P# h! `: q: \- m. r5 minitialize-settings
0 `1 l, J6 I: O! ?4 v
& W2 Z6 s4 W% ?; a/ |
crt people [setup-turtles]

# ?  I/ V2 |7 A/ F/ O
* Y" y& L( V+ T+ @, Zreset-timer

$ }: m: |' W: `0 W. J  V5 x0 d) p; M  q6 [7 f$ {7 I- @
poll-class

7 G' Y; Y/ I$ }9 e: A: m  ~( R! _1 X7 g! e6 ]/ C2 _
setup-plots
( F9 ~/ g2 ?+ x/ {
$ C) R$ a2 Z0 C$ ]
do-plots
; }  |/ w* T7 m* r
end
" ^4 \% h6 R6 K5 r8 N. k# Y5 D9 D' ^- G8 h3 d
to initialize-settings
0 C: L/ o7 a9 l
( `9 x2 f* ?# q/ f* `8 c  mset global-reputation-list []

0 m* c3 e9 k1 q% y- D! X2 R+ g6 V* [. h7 @% q
set credibility-list n-values people [0.5]

* q: Y% Q9 x8 V- G$ F' l8 H# w" v! \! p) \( m+ Z
set honest-service 0

% d" I% n3 Z  `' @, L+ d
6 l+ C: B* E, f7 W) W5 s6 B9 F. Xset unhonest-service 0
4 T1 u9 G. I' E$ D; a5 D2 `

; c$ `+ d8 D' C6 E" Qset oscillation 0

9 \3 d1 x! c, w6 Y+ H' C4 j1 s. Z8 Y7 \8 u, c% R& Z
set rand-dynamic 0
, I; n1 |5 D& f/ _9 |- g5 c- e0 r8 N4 q
end$ N+ K  ]+ |4 E

1 U8 X! ^+ z, z' eto setup-turtles
9 E8 m' U+ ~* uset shape "person"
& @: Z% k# b. O4 W$ Vsetxy random-xcor random-ycor
5 ^. I5 f9 q+ F. s3 D9 pset trade-record-one []9 P) ~% O, v- w+ h" k

: y; [& w8 s- q& E! cset trade-record-all n-values people [(list (? + 1) 0 0)]
% A  I5 `1 Q/ H# ?: p4 D

0 V5 e) o6 z4 k) `9 p$ \' c- f5 fset trade-record-current []
# D7 h" n: A3 K' r6 Sset credibility-receive []# A: v4 M- m. f* d
set local-reputation 0.5
; P4 u; t6 F; m/ `* D7 u+ l# _set neighbor-total 0" T" w/ q# i+ @
set trade-times-total 0. S+ S* m' V3 m# P
set trade-money-total 0
9 u( i" e( f' H* K7 C) l9 Uset customer nobody
; O* F/ G+ W+ Z/ oset credibility-all n-values people [creat-credibility]
/ T1 v8 n* b3 {/ O! f2 @set credibility n-values people [-1]+ w% l( `  q- M8 m/ H. {2 E8 W0 E5 j: _
get-color
+ n# e4 G7 C$ w3 C5 e

5 Q. {# @# P7 X3 M' M( pend+ L* b6 `! X+ {. h; U
) I6 P/ i; ^. d) v8 `
to-report creat-credibility- D5 O4 I( Z# ?$ F( E
report n-values people [0.5]
' e, c/ \4 S4 Y1 K+ hend
4 n1 c4 w. B* W+ o4 w7 r4 O5 ?6 s" H1 V1 \" Q
to setup-plots. h* a6 C% f; w/ ]* `

' _1 F" X% W$ p& uset xmax 30

/ I7 u' A0 \8 t* \* H
8 i# G: R& D- Qset ymax 1.0
6 [. D$ v+ G/ z3 Y
* G" ^) `  a$ i% O
clear-all-plots
; {7 o+ x3 X: c
4 v% T! ?- h# l/ E5 Z
setup-plot1
% x3 a% U, ~' B! P0 U

. t8 f$ }) J3 Xsetup-plot2

. p1 F( L$ w0 W. p, b; v" U0 I3 E2 w+ |4 T
setup-plot3

' `/ \$ D" ?) w% Nend( j' e  o# }( O' k- _( x; K

- U6 h( _( `. O* C! D5 j2 H;;run time procedures0 E  D/ o7 W2 F* z0 g, }; I
  k- d: B" B, X0 s2 Z5 T2 c( [6 C
to go
, T. E8 i# `' Z/ s- H; J, G) {) y9 i: w; z/ ]5 v3 \% C5 m4 f
ask turtles [do-business]

, o% m. K# I& ]0 ]. N: Rend
( [* [4 u$ v% L& R% z7 L' k$ j8 b/ }9 |4 S0 C3 Y$ F3 l
to do-business   _8 l: V# U1 a

0 |# ?( l+ D3 u! W( @+ t* u- s; }1 t5 h- h5 \9 l
rt random 360
' F# K* |4 @+ z; P* @
- ]% o9 J% y+ T4 g, F. t1 M
fd 1
# u! B& ?6 P  N- o6 U3 a& n
9 h+ r! A; b! c4 i- x) V9 b
ifelse(other turtles-here != nobody)[
2 O% e: r( l6 g& J8 M) w$ t* \

. |8 T( _5 M: sset customer one-of other turtles-here

5 [: I. W0 I/ Q3 T' I" n. a8 d) b% Q, }; |
;; set [customer] of customer myself

$ X$ Z2 N4 U, G0 i
7 M6 X7 _# u  x; c/ kset [trade-record-one] of self item (([who] of customer) - 1)5 G8 [/ r7 V- C& z, J
[trade-record-all]of self9 E. q! d7 u6 u" o9 w. {: B
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
! T1 M6 `, ?5 |6 U6 i# y

! M6 R/ B) O7 C' `6 l. Fset [trade-record-one] of customer item (([who] of self) - 1)! f+ r8 Z2 z& d$ E; h, J6 k& `5 e. V
[trade-record-all]of customer

9 G4 {6 i5 p1 P0 n* W, B7 q
# f/ Q  M" _# zset [trade-record-one-len] of self length [trade-record-one] of self

2 x, \- H1 N" ^* x- V9 }4 R1 o+ f- Z2 c
set trade-record-current( list (timer) (random money-upper-limit))

! k- I* K. i5 W
% i' D5 v( I5 ]( Task self [do-trust]
1 T9 U8 o6 O% w# K! C;;
先求ij的信任度/ L6 D) H. W% N+ |$ |" U. A) J
$ l9 E2 J! f7 V" M6 {0 ?9 K$ B5 q/ |
if ([trust-ok] of self)$ r$ x' x+ o! F" J
;;
根据ij的信任度来决定是否与j进行交易[
$ h: D+ Q. i8 F$ g9 |9 ~  @ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself, t; l# \' _9 z: o( F+ N

9 t8 F. L/ D7 F+ E" N3 a. g[
/ k& U+ M  _8 S+ Q; x  t2 g
* O& g( B$ K8 m+ R
do-trade
! _3 q! Y/ t0 S3 B* L# D

" M0 R0 p. H. P5 R, ^) hupdate-credibility-ijl

! Q$ |- h" f0 s: f2 j
, q" R, P$ x- x9 K$ M$ iupdate-credibility-list* P2 m/ v" B% S2 o% X

& N  M0 n7 v1 n4 o( V/ q* l
4 h& k2 s/ ^; S5 Q3 nupdate-global-reputation-list
! Q( G# o0 z, B

6 @( S7 {, ?* W) }7 k% K; z8 Dpoll-class
  N! C# h& `) p) m9 n$ ?/ s
9 o1 |( @9 V3 [4 }  C$ ?7 v
get-color

) b% H; z0 `0 z7 |7 ]% q( n5 A: D& _) K9 _, \2 t! v( _
]]5 L7 B6 p9 X  [% }6 @
. e0 F1 f; o8 G9 C( ?4 u6 W
;;
如果所得的信任度满足条件,则进行交易, w0 l% h) m; f9 H8 o
6 w8 z+ o4 ~/ I3 z# N2 q7 e
[

5 s4 N% U% G  ^2 o
- W% y$ p, `) d9 vrt random 360

! y# d% _9 ^4 W3 _3 [8 f' ]$ k" t4 B- C6 ^* x, S# B
fd 1
9 R' ^1 ]9 m) y

) h8 c# e" j0 ?9 d]
# h% w/ D  s, F  J
" O& t' Z9 ^* l' d
end
, Q# `$ W8 i' A8 ?" F) k
- W' U% i7 r; \+ D, R+ Z) W
to do-trust # P2 K/ M" s* r. X
set trust-ok False4 P6 g( t# Q9 m* O2 ]5 ?3 J
5 U: A! B1 I" H( @8 a

, o% `( }, W. V, v: M" [let max-trade-times 0
8 ]0 q$ n0 K% G/ H# m0 a4 c; }foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]1 W" U* x3 ~: ~4 N. `! K1 h
let max-trade-money 0
4 _& Q# ^/ W! u& F* Jforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
* l. m, l( _0 a& 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 R4 |1 ?( w2 [! v) M6 |# E
( R* F9 @4 E$ `6 x0 }7 ?
7 W  S' F  V3 O4 ?! n- ^1 t* b
get-global-proportion
% I" @1 Y, |3 T% b; X* olet trust-value5 m: T* R: {& D: p& n/ G% s5 ~
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

0 L8 R2 _- T5 u' ?/ P! n6 Pif(trust-value > trade-trust-value)
: p  _3 r7 x  W0 ^& W5 j[set trust-ok true]
8 W/ L! D; ]# ?. }3 g$ s; t5 i- @end
+ F/ T5 c) ~  x7 A# k
( K, r2 Q2 }* b) ato get-global-proportion& C7 y7 Y* \0 K8 L; s
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
( r* j- X1 {# K) {6 G; U1 C) U[set global-proportion 0]
% ~  k% D3 f1 p* h# l[let i 0# u3 I( d$ @( n5 T4 {* ?( K0 }' ^
let sum-money 0" ?1 E0 M3 i# k) }" {! }
while[ i < people]
: M4 h$ o3 f6 S/ W8 z- ][
6 t3 o6 O" ^, i0 n- N( e1 _, iif( length (item i
/ b* }( _2 s+ J, G9 G[trade-record-all] of customer) > 3 )

- E+ M! c: Y2 M# I0 Z[0 i5 C4 @4 m' `% d  {2 {
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))" b+ ~* [7 \9 `/ ?, o/ i* S, Z: {; t
]6 r, y* c$ a2 g. U; O7 w8 ]
]
9 x0 C( r" b3 c: w  ^8 qlet j 0
0 B7 F' G' I# q3 ~let note 04 Z9 x: M0 p5 g2 n4 g1 |/ P; J
while[ j < people]
; [5 {8 }6 U$ I9 I, L; U[! A) d6 j* S* N% ^
if( length (item i1 o9 g: L2 c# w9 e8 d5 ]. }
[trade-record-all] of customer) > 3 )
. i2 H7 y0 c( L3 J
[# q9 g7 W+ I0 o1 Q! m
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1). _8 m+ b* x! ]! S# y  \
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
! @+ z) a% Q  F. V[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
, V6 N+ r3 n4 Z7 G+ e) A* r2 c3 j]
' `- c5 C. T. d' Y]
5 z, Z! s  q% M+ o! tset global-proportion note
# U- O* `  t, k, H* e" U]
$ U  x+ P9 q  y) x+ [1 Tend
. {" |6 W2 K. t2 e
' Y: v/ }+ ^" s$ v7 Qto do-trade
- H8 N; h( i# y% x; T3 w5 P- c2 ];;
这个过程实际上是给双方作出评价的过程4 w7 F3 v& h; E& y9 [0 U$ m
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价+ q% t1 ?: h( q2 L- @
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
- d. t( V' i* p0 i) p- Wset trade-record-current lput(timer) trade-record-current
: @' g+ q5 _& ^;;
评价时间
  A. L. M6 o, @% c9 Wask myself [. r; C, W0 U3 D
update-local-reputation
  Q5 y: S5 _. u+ u# Zset trade-record-current lput([local-reputation] of myself) trade-record-current0 e! Z7 J7 l9 w% `+ l
]( J  b% `: @3 n" l: i0 ?. K- u
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself, e8 M4 J0 }' \1 D6 o9 B
;;
将此次交易的记录加入到trade-record-one# I: a6 O' a& N1 T( u% n" H
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
0 q* u4 @# c5 B. e+ Qlet note (item 2 trade-record-current )$ }- T* m, @$ `% i
set trade-record-current
' C0 G2 F" b$ P9 l(replace-item 2 trade-record-current (item 3 trade-record-current))
" Y4 v! _% o' \5 b5 n$ M+ v
set trade-record-current
2 t, l! |4 k% I% v+ u% K: q(replace-item 3 trade-record-current note)
; b0 `" n9 B6 p# S( l% b/ ~
. T8 W4 F8 g( a
8 @' `9 A. Q# g
ask customer [
6 d: _- d5 g  n4 l. [$ l  a& Gupdate-local-reputation' P3 N( ~: K, U* \/ [5 S: t
set trade-record-current, `) G, e+ ?  r
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

/ Z; k4 I! _2 @8 `2 h' l]% M. k- \1 p! q0 U+ n3 S

: ^9 k3 S7 M6 j0 i8 i& P
9 F5 r9 c6 z6 e; D2 _
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
3 \7 y9 R, J5 r; e9 I1 k. t( y' j
3 ?: ?' }7 R  D' H
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
' K0 j; E( R# m, T+ P;;
将此次交易的记录加入到customertrade-record-all
2 @! ~! B5 V3 m6 t/ Zend
- @# `' D: Y9 n1 K6 P' E+ C/ C8 T- T0 u. }+ M& j
to update-local-reputation$ R( L, L* C" ^3 q( k
set [trade-record-one-len] of myself length [trade-record-one] of myself
. J2 O  x7 V# s( ~) V2 g7 x
: F& w+ G- W1 Y  @7 \0 Z; P( |# N1 p+ ~
;;if [trade-record-one-len] of myself > 3

, R7 ~7 _2 F7 P" zupdate-neighbor-total( ~' a9 \0 d6 m$ f. }5 i* [
;;
更新邻居节点的数目,在此进行
1 e# a5 F2 y" U( @( b3 Z/ zlet i 3- L% A. p4 U  Y* I
let sum-time 02 a  K8 R6 l: P* X: e2 i
while[i < [trade-record-one-len] of myself]
( q' Z. e, V! ~4 o5 y+ l[! d! T! ^7 A/ G: o
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
1 r" n5 C- E8 Z( Lset i. s) P: Z, e% g, }$ N
( i + 1)
0 o- x5 y% O* f" v, R
]
. m9 D1 M9 \) b7 z& x: Vlet j 3
; U' Z* t9 u: Alet sum-money 0% \# N( U+ k3 ^( T% X
while[j < [trade-record-one-len] of myself]9 M, w1 P7 ?5 |' w& }) H: N
[
- h3 [7 d/ j6 B( K$ U% V) Jset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
, ~- y* Z0 \. M" A6 Tset j
* Y$ n/ u8 i5 l( j + 1)
/ m* W5 t% i( R8 v  S
]8 W' m# ?! S6 m1 ?8 K1 F8 o# j
let k 3: E) }: e2 n0 b: i
let power 0
4 O$ Q) L, m. {" E3 flet local 0
; g" G- N3 L8 S3 twhile [k <[trade-record-one-len] of myself]4 p' a3 M6 E; D( ]( r; h9 }
[
- u' |' L, z2 B$ ?$ S- Pset 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)
+ E8 p# S& C/ n3 \! \set k (k + 1)
& C3 d9 u4 L: ]]
8 p" q" D5 d3 t1 _" z5 L6 vset [local-reputation] of myself (local)
' I$ U6 P, Z2 y5 Vend
! W' K7 E+ @* }" A7 N. k, h% l8 T; Q6 s0 {/ _8 R. R
to update-neighbor-total
) T( P, q: ~# I+ |: g' W) H8 h6 x# J) R* j$ Z/ v+ v6 \
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
7 ]0 Z9 R) A% r0 H) I, n! s* ~# w; O2 p+ u

+ S: N* g5 t$ {7 `end
" \1 ]3 z$ M8 o1 D& J7 i8 r% S' e0 C/ [" T$ ^- Z. U
to update-credibility-ijl
: P: C# W* V; d& O! k8 v% O5 u3 L# C  Q
;;
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。7 w$ @" p& f$ P9 C$ C
let l 01 h0 N! h: W, ]7 s' V
while[ l < people ]- F' u8 a  w+ e) e. J8 R, J
;;
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" N. U2 \0 x+ Z# ?
[
2 t# x  a; u# ulet trade-record-one-j-l-len length item l ([trade-record-all] of customer)) t8 |) E0 U( y" e; i  s, o/ n2 y4 j
if (trade-record-one-j-l-len > 3)
# k  c0 D; L4 z5 [0 ?[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 }/ B- Z  O& r- O+ zlet i 3
1 n5 F6 S1 k$ ~* [let sum-time 02 n, k+ n: ~; G* u
while[i < trade-record-one-len]: N; C% |. U! U. G( e( q  L
[
# Y# X( N: X4 c5 e# uset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
1 M( P7 d  T3 e" y) ]! ?set i8 r% R+ ~4 h$ q; g! f2 t7 e4 S7 z
( i + 1)
! g4 _' z/ n7 A4 [9 Z
]& K. k& c5 T/ a# y( M' E
let credibility-i-j-l 0
% H* _2 O3 C7 n- i4 d;;i
评价(jjl的评价)
) W8 P( P( W8 H/ rlet j 3
- ?7 p  h7 I, t- s/ J! O% ulet k 4
/ E* w/ {4 b) a; R6 M3 ^9 rwhile[j < trade-record-one-len]' y5 P! R2 L1 q$ l6 J0 O. n& a
[5 Z, j# B! H9 h' V- `2 e
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# n  c) T* ~% 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)
  ~% F5 |( o0 u, Q: @. d" Fset j- S* U' h+ U! O4 @8 Q- T
( j + 1)
2 C* n: j% I7 q* L: F7 @
]
3 \# f; }4 J8 k; cset [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) a0 t4 p. d" A0 X' c; H: C& ?

; R" b. y9 E/ |/ I* C

7 z+ p. x' |  i( ^7 `/ ^* Blet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))3 Q/ d. e( e  S1 q
;;
及时更新il的评价质量的评价
7 H  t7 p1 `: \9 E6 w- T9 }set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
; x. s6 C" ~* x8 ^: _/ v# _" }set l (l + 1)
( u. K; L/ S7 @% z1 l7 {]# v+ K; u+ t3 Q; \' s
end" V" o1 Q9 X) z0 f9 \8 h
% P4 T5 q9 x6 Z9 K- O+ S* S
to update-credibility-list
8 l; p* C0 l  A% }let i 0
/ y1 u: c( L5 j) ^1 T! W" u* n$ I; Bwhile[i < people]
# F1 X+ R- S/ z; o$ E; y; S[
0 s8 q7 T7 |. k, o6 |let j 0. _2 E8 ~0 @9 l" P/ z% A- w! N- Z
let note 0+ j) K& h+ \) Q; O
let k 0; w3 _$ b* V& l
;;
计作出过评价的邻居节点的数目" n* y. M' r) x
while[j < people]" R  D+ q9 G( m# N
[
6 X0 u5 n+ u1 j* w. Rif (item j( [credibility] of turtle (i + 1)) != -1)' W$ [1 _0 u$ L, d" x! O  l
;;
判断是否给本turtle的评价质量做出过评价的节点
/ ^6 R  a0 A8 P% I+ \[set note (note + item j ([credibility]of turtle (i + 1)))
9 g. [7 }7 Q# R$ m% L! y, M;;*(exp (-(people - 2)))/(people - 2))]

' b3 R& D9 V9 qset k (k + 1)
: a3 V! j9 ?1 ]7 t6 u- g]
* B4 n, g6 H: U# A' |( _! rset j (j + 1)
# m( [9 o+ z+ I4 I& i6 Z! ^9 z$ F]& g2 `' e0 ~; G' h
set note (note *(exp (- (1 / k)))/ k)
  @2 I6 R  Q2 k8 x2 W, ^5 f# V4 A* s5 eset credibility-list (replace-item i credibility-list note)
# W. P( ]/ u6 ?+ r) Gset i (i + 1)
/ ^6 c1 b$ k4 O* ^& u3 M& j]) w& K( w3 b* B6 L5 d* f% X
end
1 o+ s! a# M. v' \0 B$ ^
" V9 }  h- J$ [" L3 {1 I3 V8 e7 rto update-global-reputation-list) j) B5 T0 w8 h
let j 0) J9 F. X; [* P& v! o2 V
while[j < people]
! f6 N' F, @9 m% }  ~% J[& H8 Y/ m* P+ f' v' ?' |1 |1 p# x
let new 0
8 O! E1 a/ \' W" @;;
暂存新的一个全局声誉5 {7 x5 _6 O8 |' J3 Y( P( |. q  O
let i 0* W- V! G2 q7 S" U9 @
let sum-money 0
9 Y0 r9 q) A9 slet credibility-money 0! _6 l$ `8 o, x5 Y" l
while [i < people]7 y$ p3 |0 I& h. U9 ?+ d/ Y' a) m* Z
[, H7 h% n& ?. P+ `: P
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))" g4 f& A, `) U5 q+ l. J+ a, `
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
5 V" A0 M6 J0 P2 dset i (i + 1)
. |' }. A4 J& q4 a]
+ B3 H5 J; x, O+ z1 u, C- \let k 0/ f; U8 D2 y2 C$ O* X
let new1 0; E2 P! K0 w. R$ f2 `) k+ l
while [k < people]
% ?& w5 N% x7 k7 j  V[; a0 s' L" E9 ^3 ]- h7 M( Q* o
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), @  L  v: t4 P- _
set k (k + 1)
9 g! j, J$ m2 z]; D1 m- J' K/ ?0 e
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
4 h" U1 Z  ?/ Uset global-reputation-list (replace-item j global-reputation-list new)) I3 d- e4 U, v& C
set j (j + 1)
4 {; y& t0 [/ \" T4 d3 f1 H]  v4 B% l5 t8 a
end) e/ b6 Q2 N, O! P6 c0 ^
  F2 N: f  \9 m+ `

8 E/ v( ^: J* e, g) N- ]. O- F: F( j/ l& z9 }
to get-color
5 ?: i2 h. i/ m, ^( o" ^  U2 h* [1 _4 F3 o6 B' L/ u) b
set color blue

7 E* s6 u8 h! D/ P0 ^" hend
" s; e6 U; l5 B/ z* ]+ i. `
0 W! ?- |5 Q( T. F) Sto poll-class
* V' J5 W# i. X9 Mend6 B6 N1 |  W0 @  Q# o5 d

& i. _- E$ S7 A$ N7 N0 dto setup-plot1
: @+ k+ I8 Z% E4 V2 K
# ^* M$ i# i6 H7 `( Q7 ]/ H  q+ Cset-current-plot "Trends-of-Local-reputation"

6 U/ N" s. I5 b1 _. s
9 i& R3 x4 Q0 s# zset-plot-x-range 0 xmax

9 }+ `: N8 N1 A+ ]2 N! ]( M: T
7 r( X4 O- L) Y( o8 `set-plot-y-range 0.0 ymax

& x4 {) i! r8 Wend
( Q+ B- K5 Z' h0 x8 E4 A
1 m* P6 M- `' Y4 d% R1 _9 ito setup-plot2
9 Q% v0 O" |9 a0 f! z# n  ^% Q
% h; _& w) h, f0 P- rset-current-plot "Trends-of-global-reputation"

/ M* k1 |! G1 c, `9 @7 }0 Y; Z% A# i! d2 ?+ D$ X9 N' M
set-plot-x-range 0 xmax

) {- x' s- x+ _; g- _+ |: P' A5 r7 x, L5 g! ^
set-plot-y-range 0.0 ymax

5 P+ w! @" M3 c) X  Oend
+ L) Y% J# {9 z/ T% C% ?8 N
" p3 Y0 n- c$ x- J! X$ zto setup-plot3
# T3 q& H5 J% }" |7 q! |1 z( B- l$ f6 m' s
set-current-plot "Trends-of-credibility"

9 b6 l& L$ H8 T/ H1 Z8 Z) h6 Y/ W. S5 `, {7 g! m4 j2 d- t5 M
set-plot-x-range 0 xmax

5 J8 r: g) h8 X. _0 u4 f$ J/ m0 G& H8 \8 Z: e+ H, {. c8 F) t: E
set-plot-y-range 0.0 ymax

- C  Q/ R) ?0 U) Q5 Vend
; x' T! }$ p; q
1 G% _5 a8 }/ ato do-plots
( O, |7 D0 h* J2 [set-current-plot "Trends-of-Local-reputation"
1 k9 [" u8 S+ [0 e/ Nset-current-plot-pen "Honest service"
! q' ]5 o3 p9 z6 j1 kend2 o* ~9 e- S# A% q2 K5 ]) a+ `, f& I
7 n% ]6 ]& 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.$ H. p5 p( Y& X( m4 V3 \
3 R; F! w8 ?7 i7 b/ t
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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