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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:
& R0 m+ v! c: V* U) Yto do-business # ?0 `3 L9 u2 @( }
rt random 360. ~. R8 w) V2 |8 x* f2 \
fd 1
3 L" T  j' J6 d" ]" F! i7 [: \7 l* q ifelse(other turtles-here != nobody)[0 S0 x2 S8 G, P* s) G
   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 r9 _. T5 {4 Z   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    # k6 C8 R' s0 `3 M
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer2 V& b% }. M' S4 h" U! T
   set [trade-record-one-len] of self length [trade-record-one] of self0 g" L8 S5 v/ I9 W) Z4 u
   set trade-record-current( list (timer) (random money-upper-limit))0 }% Z4 @. R$ \2 @) h

( U; b3 D- `/ z5 P: P9 Y: X问题的提示如下:
0 G& D" [% g3 c' W1 x; W* ^) F$ ]' r5 H2 k( w4 f
error while turtle 50 running OF in procedure DO-BUSINESS
& X0 C8 q* K( A6 a  called by procedure GO
) S& m5 t6 ~' T- ?$ _% L3 ?OF expected input to be a turtle agentset or turtle but got NOBODY instead.
7 j6 _' ]$ d0 B3 I: ~% Y+ J
(halted running of go), }( y, t6 A5 ^& @. A% e. b
1 G2 Y) m  k4 F( z+ V1 `
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~~6 A! I: U9 x$ ~- L/ _. ~
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6 K  ~# n7 W2 F: H  v9 ^
globals[
5 n$ K' y  ?& l+ R% f% x' H( dxmax$ Q6 o, e0 Z% E( S/ H. F4 f' l
ymax, ^1 T- F# N" H3 ^
global-reputation-list
* O3 W6 s% M6 ?/ x4 `8 j
0 d! I$ z# `7 b/ I7 a;;
每一个turtle的全局声誉都存在此LIST
: q6 B9 _3 b' b! c) w: W! @5 S) G- p& ycredibility-list
3 k  [$ Y$ A. {8 ]" C; @$ g4 _3 r* M;;
每一个turtle的评价可信度+ R$ r) m  W1 n  z
honest-service
8 D1 o. B9 n1 r9 K  [9 }" Bunhonest-service
( X, X' Q% t) q! I; {oscillation+ X7 m# R  V" U
rand-dynamic
4 |5 O) [+ `' j( J2 x! l9 c, E]! X& L* T! n  k! v& [( G! d2 q
8 `, R: x6 q1 N& h0 {2 r
turtles-own[
# j* W7 M* u; {1 |4 |trade-record-all8 x" p+ u9 g5 B- s+ c( k" {
;;a list of lists,
trade-record-one组成
7 Y( v, c& M2 T  a, ttrade-record-one% Y+ a/ T3 s! M+ p
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
, B2 {. o6 T# I' G
5 K1 \  l% m- O8 z! Z4 E, ]( S;;[
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]]5 ^9 W& g3 ~9 y. f7 w) P; D
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]
$ Z! t2 f. j; W  B9 F$ Ecredibility-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
, \+ j( n( n7 c  z  N5 {, O5 w% N0 Jneighbor-total
! H+ M9 I* E; b9 T;;
记录该turtle的邻居节点的数目" c$ A# I5 |8 o1 _- D8 k  _+ B
trade-time
- f$ e5 O" I! [# g;;
当前发生交易的turtle的交易时间
( x# J5 S6 l9 p' p5 B+ fappraise-give
, d3 Y  j& k3 t" T# F;;
当前发生交易时给出的评价
7 H0 o0 |; X8 d! J, z' Pappraise-receive
4 L, _' t' m: K# ~! t0 H$ J;;
当前发生交易时收到的评价. E, D( {! R+ q; t
appraise-time
! x6 a8 p; F, N3 h7 v6 z4 _;;
当前发生交易时的评价时间
9 ^( J# l. U3 E& [# V4 a% c$ ?8 \local-reputation-now;;此次交易后相对于对方turtle的局部声誉
- t9 |* J5 R/ g+ x3 Xtrade-times-total# W; ?- f8 e3 q
;;
与当前turtle的交易总次数: t, J& B+ K$ t. [$ o3 {! ?1 |
trade-money-total
) b, s+ l$ ?+ i* U0 U;;
与当前turtle的交易总金额
* R3 \. U$ R( A  h' [) Olocal-reputation
  v4 I7 \+ h/ C$ L7 p3 D# Xglobal-reputation
+ j  P8 N9 {! c8 e8 `credibility
+ \0 D/ ~, M' j# h# v& g. b/ f;;
评价可信度,每次交易后都需要更新/ l) A: D7 C( p% e" d' G
credibility-all2 |4 |: \, w$ v
;;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. R7 A# c  X' e+ O
1 X! c5 @$ O/ a" M9 O
;;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
) D' j/ m/ y1 S$ q. H5 Scredibility-one1 p% f. K, S9 y" v9 H3 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
1 j0 m; w  ^# q  Aglobal-proportion% I9 R% v& h8 A) p' }4 C
customer
" s) ^: P2 w1 ?( n" X& @customer-no
/ |. c4 o, |/ D7 N# Rtrust-ok
; g3 ^2 |1 T# F) A" otrade-record-one-len;;trade-record-one的长度
9 e7 }  n  l4 K5 c]3 e( I$ ]" b9 X- s3 k8 Z- V
, @; l! @  @/ i$ q
;;setup procedure. U: Z- Y$ j! k! G6 j
  N8 X+ N1 W8 q: I/ i* S9 U/ ?
to setup
2 t3 W6 V% X0 Q5 H6 C" `/ b. L0 ]
; n0 c; q. ]5 j# ^ca
3 c8 A+ |6 S4 l: V
6 r$ e; e9 f5 q- Y' |( J
initialize-settings
2 f1 ]/ L' M. R& z& a/ w
0 u2 [( M% Q: h# P; w7 b! u
crt people [setup-turtles]
5 s4 s* \# j5 I5 e( t
/ t8 X! l4 q' @; W- e$ }
reset-timer

/ C5 |$ H. |( r5 }* q, x* J/ F+ o* \7 P$ {* _# r  R
poll-class
6 U8 Y2 L, ^) I5 h5 G

/ f1 F, D+ V1 S7 }setup-plots
" r' @, b% c8 H) t* w7 V
$ Z* `3 T" B2 e' ]' o
do-plots
( S8 l  _& @. ^5 f1 Y  ]
end
- ]2 G+ T8 k4 x& U6 B) p7 o) Y# U# ~0 S% U5 O0 {
to initialize-settings
5 p5 q9 V* T1 Q' @- b! \, t
' q* e7 z3 n- Q3 s/ X. k/ Mset global-reputation-list []

1 A% \% r, g8 t8 U+ Y' D) S
* G+ V; ~% y" d- w0 rset credibility-list n-values people [0.5]

+ S# f4 f$ p4 I: r' o7 G" Y. R; p& I( Y2 a1 _  D/ ]
set honest-service 0
" L, p: `4 [  g

9 H5 v3 m7 P4 C/ H8 @set unhonest-service 0

# Z- X% ?& f* V( D9 x- s, W2 h
0 d2 r$ U, l) }! Fset oscillation 0

3 ~; e* n( E$ n; R% f" T7 o$ Q8 E9 \+ W- ?/ D! k* Q2 S3 N
set rand-dynamic 0

- Z& _6 \: Z6 P3 Eend
+ \8 u  P( k) ]; c  A
6 f( y0 N" ]. T$ A0 }! Gto setup-turtles
# ^! i  {. Z$ ?2 n* Bset shape "person"$ e8 W( c8 G: }  M5 g% a
setxy random-xcor random-ycor, e. E7 y6 D( s; R& L& v
set trade-record-one []
9 j$ U$ l3 h! J6 f

0 o" J5 B$ _& a- f. o7 V+ ^7 Aset trade-record-all n-values people [(list (? + 1) 0 0)]
+ ~! D! H6 f: O
0 B1 `" r8 C6 A" a
set trade-record-current []# B+ `. B( }. }* k% D8 I4 Y$ Y$ S
set credibility-receive []
* h3 l: y$ {: o8 h& N) Lset local-reputation 0.5
) p5 T6 H, x/ u5 [, Z$ G% Fset neighbor-total 0: R( [3 W  R8 m8 P+ P+ i/ N7 i
set trade-times-total 0! u( \+ D& h  a1 \6 ^) o
set trade-money-total 0/ C! S& a; d- U! Y
set customer nobody
+ }: Y, g+ k* ^$ fset credibility-all n-values people [creat-credibility]) s- j/ o* W' ~: r9 R" Q( o
set credibility n-values people [-1]5 u* }3 O. O& g. t6 M/ g$ j$ _- f
get-color' G, s- S8 v( C: V6 h

$ m8 f9 g, [& ?- Send: w1 f9 a  Y! m" B& I6 x

: q% l7 t' F  V5 [* r0 W1 kto-report creat-credibility& y5 A3 |4 r$ }1 f& X% _$ w/ T, f
report n-values people [0.5]  b: d- s8 K% \2 Z0 P
end6 Q/ ]* g- r- G6 K$ ?- b

9 |3 ?+ Q3 Y8 Ito setup-plots
+ r- I! u/ g7 T. B. B5 v: E& k, }& d' y2 ^; A& [5 d/ I) h! w
set xmax 30

/ ?5 c7 f' u9 \/ G& Z2 {/ P
0 f( @* b5 Q0 J9 V0 v$ F8 kset ymax 1.0
" d' e! |8 n; n4 s3 |
, T5 m" R: |! X3 g6 Q, ]
clear-all-plots
. ~+ g2 z9 |6 a  W7 b7 p8 v( s4 k

5 y, w. t* H! B. k! ~setup-plot1
( x3 o+ v; V+ J/ l* a- ?: n( ?

+ s0 t& r. y0 T3 H& d7 K, H: wsetup-plot2

# Q" b, N  G: [9 f+ h/ w
2 F4 o* Z8 u* O: z2 ?: F9 Q' Z7 Psetup-plot3
& U6 _3 |$ y8 u
end
) M! [# a/ G! i$ T" l' H# p  d" }1 e0 V" `+ J' `
;;run time procedures
8 {; O2 z6 x( Q, L! B
% u* f, X; A8 L. |+ l6 t2 Lto go8 e4 [9 y& n& ^* F5 W# U

% d# `# ]2 ^& e( v! D( eask turtles [do-business]
9 y: l1 ]' V6 B* D
end/ `9 y, v3 v: T! r  N8 F
9 R" R5 F0 ^3 w0 K& G
to do-business 9 Y/ e( A" p' s. M1 c

- B# g4 a! E( g' g2 A% [+ t- ?
0 K/ }* f9 x5 \) T. Ort random 360
% B" m$ O: }5 Z% L
/ B' a' I9 [! O- e
fd 1
: @3 v2 f+ _' y! t9 I

1 ~8 B6 [. y% w- g8 P, u: ^ifelse(other turtles-here != nobody)[
! H4 s  m" U7 E, Y& B* S$ D
; d9 d/ g. Q1 o
set customer one-of other turtles-here

, U1 Q! K' G" Q% Y! v- z5 e( g* O' p: ~. |  t
;; set [customer] of customer myself

9 ^4 q# c/ [8 Z9 m+ B& y4 O
! |( \2 `0 g, a4 E* G; R7 y6 xset [trade-record-one] of self item (([who] of customer) - 1)
( j2 ^1 |& b8 X6 }9 G9 \& T[trade-record-all]of self
4 P8 t  ~$ P) l  _: o;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

; U, o6 v# c. ~. m* \8 H) D5 [8 O& y, d6 t: c
set [trade-record-one] of customer item (([who] of self) - 1)( F$ c9 V1 h) z9 S
[trade-record-all]of customer

  T) m( a. M* N6 ~& N4 B/ [$ B+ E% r$ E0 d, L
set [trade-record-one-len] of self length [trade-record-one] of self

. `( J# T) p0 [; ]. A5 i* H; N+ I! O3 ?4 ^7 R
set trade-record-current( list (timer) (random money-upper-limit))
* G2 i9 X; a$ \
' {. c/ {* _) J! k* w
ask self [do-trust]
6 e9 ]% q/ x4 x! u5 L;;
先求ij的信任度2 @' O6 W3 U1 T5 Y

/ H8 ~0 x) p8 x$ W- m- {1 m7 s( ^if ([trust-ok] of self)
: ]4 d% F2 \$ W+ u. S( T  d5 ~, n, P;;
根据ij的信任度来决定是否与j进行交易[
$ R) Z6 u: n( i6 L* Eask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
) Z: i/ A) [9 u  R( i
1 [% W8 }# S5 B0 L; g[

2 f1 ]8 H6 b1 A0 Y! L- M  z* U' \. [$ j! k5 i; A8 D
do-trade

! f+ _; x* t$ \. l0 {2 U; Y. [$ V3 l5 r/ r
update-credibility-ijl
; s: [; |* q5 L5 ^" H" V/ l8 h3 j5 v

+ K& Z/ e# j6 n1 Q) O( X3 L$ ?2 s. Supdate-credibility-list
" D. z! p  |5 P# \

2 d" q* Q+ A, J- l1 k( C5 S% n5 J# B0 N( u% m& L
update-global-reputation-list
. c. p; H. x* N1 i! |, @

" l' c+ I2 i9 }) z' g" qpoll-class
: X5 z+ Q  [5 A0 O4 E; e* i2 v" m
, d0 d1 y, l0 S
get-color
( |  c# O  q! u: o4 v/ _1 ~) }1 P
. P8 w0 s) l! _
]]
5 J+ Q. u# ~" {) j  z3 {7 m) R1 ?5 ?' d+ `" O2 j! N7 k
;;
如果所得的信任度满足条件,则进行交易
" U( B8 r& `: b* L  [8 ?' J) E& Q1 j5 N
[
7 P1 Y* f- ^1 K% j! s) m2 u. x0 `6 u, f0 q

2 O( n( _% Z; urt random 360

0 I& C. Q: U1 [7 R3 N4 U$ [# S' t- F( [) h9 W
fd 1
4 U9 Z2 m( b" T
$ I: `6 E+ _( }- S3 L: ^8 I1 Y
]

- w0 v/ T3 Q6 {2 r( @) [0 m9 ]  @& P5 Y, M. B- o4 x
end
; D# Z2 }# Y  B- |1 }/ d' ]

) @7 Z6 A0 Y& p5 ato do-trust 0 X% X3 ?5 E& G/ _: s! p: ]: p% q) p
set trust-ok False5 \2 `: T) x( f1 g1 {
; y- K% L4 O4 B3 e4 y

7 X. [- O6 m7 x1 k8 b& d3 rlet max-trade-times 00 j( l/ L6 t6 Q  ?8 M4 j' a
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
$ j# e; s1 a* i; x0 N* [% E* G* nlet max-trade-money 0
0 I3 U' P  A  d( Xforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]& V/ I, D9 O9 b/ Z, X
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))* h  ~: [& h  N* P! D  f

- y1 |: B. }; `0 C7 ^( q$ c0 c
3 R( C! @; x: Y5 x  @9 m! R* a
get-global-proportion
9 a% _5 ?" ?& R0 b- O% @' u7 olet trust-value5 F& X' a% R; ]. O2 p1 ]; j
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)

/ l+ a% _" H1 k  m# M6 w$ fif(trust-value > trade-trust-value)
, v9 A4 B6 \4 F[set trust-ok true]
# l/ g% I$ T. e2 \. W5 l( xend6 G6 |/ ?( ~" I4 j
: o5 a9 D, z3 T# Z% S* [! Y
to get-global-proportion9 C+ l$ N* m* S+ K& M0 d3 c9 s' _  K
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
9 X% K7 l  Z: ~, h[set global-proportion 0]
6 p$ u0 o2 ^6 ~4 y[let i 0
3 E: v9 G: w3 J. S% jlet sum-money 0
# V. t( n; c5 f# g) kwhile[ i < people]
, ^& I( c" L) X1 ?8 f- j[
% P' ?8 w/ e2 @, Q! b$ N3 k- k  fif( length (item i
$ I5 ]' j" i# U( `; M[trade-record-all] of customer) > 3 )
8 T! @! h9 P+ y
[
# u, f: t2 l) e8 c3 L" iset sum-money (sum-money + item 2(item i [trade-record-all] of myself))) I; _. W+ p/ X5 F& j9 R
]
. N: J" O& X5 i$ y' Q4 G. @]( t7 Y2 K5 \4 S  J( w
let j 0
5 H4 t, ^% X  a7 H! y" ^/ [* `let note 0
; z8 K# O/ s& f3 F% E% w) {; ~1 Fwhile[ j < people]
  t7 Q3 i' ^6 G8 s$ r[
' Z& C" Z! e! _, oif( length (item i
9 K, c, Y6 H) L! j( y- a0 v4 I[trade-record-all] of customer) > 3 )

0 D! t: k0 z6 V1 w  S[
( v8 A8 {1 B5 U- Difelse(item ([who]of myself - 1) [credibility] of turtle j != -1)0 t) `0 M& {! X* M1 B7 H
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
! R6 M& G1 o1 m* W% Y5 B[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
0 I% i2 D- c( _2 x]
. Q4 [( }: v; U+ j2 C" q]
. C; c5 @/ Z  A: x0 h5 ?set global-proportion note* H! h7 e3 L8 N& H
]4 d5 @( t$ ]8 v- M, i% R
end
4 \5 B: y+ R# e
. D9 V. {" t/ tto do-trade) Y1 r) \' _8 n0 s' c! c3 k: \
;;
这个过程实际上是给双方作出评价的过程& b- _! E2 ~) W
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
) {# b" f% o' E4 k3 @% k$ Aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
7 W- L& f( ~( O& G9 _set trade-record-current lput(timer) trade-record-current7 u( X% V, B$ x9 N% ?
;;
评价时间
# q& G1 }, l8 W6 [0 u* ~ask myself [0 A/ i% {) D( b
update-local-reputation
& x" f* \1 B. T2 \- O% p& Kset trade-record-current lput([local-reputation] of myself) trade-record-current# p# _& m" L0 S/ c; L
]
: F1 u/ N$ b/ R; v) dset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
  ^0 M+ T4 Q7 k' E8 d# N% a6 l;;
将此次交易的记录加入到trade-record-one# |# L& n6 p' }! g5 R
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)0 n% k, ^  E' x3 ~/ b; k
let note (item 2 trade-record-current ); `7 l9 V/ t# [8 b; t  I
set trade-record-current( y% P' I  z! r  R5 y& a
(replace-item 2 trade-record-current (item 3 trade-record-current))
8 ^0 Q% U, f" K: H' X  y- A. R
set trade-record-current" K+ o5 Y* m+ @+ J
(replace-item 3 trade-record-current note)
; U8 W! T* U% M% `
1 F$ M8 U2 ?5 y1 d4 ~" C6 |
4 |& z. D4 j7 g/ R3 s  r+ O
ask customer [
$ M5 E" F, I6 W! [" xupdate-local-reputation% q5 h: O( M% h7 Z  p& p
set trade-record-current
! G) S& }8 c/ x; s(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

; Z3 `8 S4 J: }* p]
$ r/ b7 ^- j; E5 C* `8 f& \3 Z% P8 g7 H

+ o6 @' w6 h- L. [) W6 bset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
: G5 ~& Z* E0 `4 z; U

# C6 P; ?$ i: Wset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))1 A% A3 a/ o9 [# h$ B+ s
;;
将此次交易的记录加入到customertrade-record-all
( J' B5 _* V: |- V6 v  |end& B) l8 e5 s2 B( ?

$ q# @: i0 K3 ^to update-local-reputation- i( S4 W; F5 I
set [trade-record-one-len] of myself length [trade-record-one] of myself
' J, \' r" c% j, Z! M8 n1 o- ?9 W' g9 k2 s- ^* r/ n
- G' L: M+ d6 @2 @- {& L" {
;;if [trade-record-one-len] of myself > 3

+ c& |5 I* T9 Z# Wupdate-neighbor-total
. i2 F  P# d9 D8 H' w* t! E! u;;
更新邻居节点的数目,在此进行# N$ }' w/ l* X' A/ y7 A( h
let i 3
) F" x( \& Z: q1 H3 Q$ Wlet sum-time 0
3 k9 ^9 U3 W3 vwhile[i < [trade-record-one-len] of myself]5 ]* K! F$ z+ h$ ]; I" T
[
8 X  B0 R1 O1 w. ~( cset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )$ u# ^  r6 D; _4 S2 [
set i3 L" |/ W4 s. |" n; b) [
( i + 1)
, e* E- p. T! r
]
- A6 D3 d# \% Y" B% n: G  vlet j 37 D3 n' h6 c' ]. J
let sum-money 0
. Q) m3 z; s: D# ?0 b) iwhile[j < [trade-record-one-len] of myself]
7 U) M) g! |* m) `% k[
1 j# D( ]; p- \% m6 x7 p- rset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)* ^# J) h- D6 C! L8 K
set j' a+ w7 ^/ r0 y% K4 M% H( V3 ~* ~4 q
( j + 1)

  U, ?- T2 q1 D]
- N; A& U6 t& U" I# j/ [! X0 Dlet k 3
4 \% F! ]+ [% o- C) s1 [let power 0
% ^/ D# C% W% G) \% H9 }let local 0
8 P  U: E3 B6 h; jwhile [k <[trade-record-one-len] of myself]
6 s3 Q$ Z- e: P[
( n0 ^* @% z$ X- m0 [3 m5 Gset 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 C+ I' w+ i- w6 K
set k (k + 1)
& _, h2 T+ I* m]9 H* h3 A2 c5 d
set [local-reputation] of myself (local)% [" x% y  {" @7 d6 C5 g" s" K4 A. G
end
" b+ Z* {* b* J2 C7 A: }2 G
) Z5 W. w$ X5 `to update-neighbor-total
" X) ?% c+ I( }1 E
8 l& A# d. ?6 j$ j8 @  y9 B( Oif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]3 t: x# L6 P3 y* H
, K8 W6 ]! g6 i. G+ {5 X1 X- v
' X$ P) N  {: y% X
end2 R' K* t8 S: |: M  Y4 _

2 G" E7 A' }, n4 @2 s+ n; xto update-credibility-ijl ( ~3 e3 I* a3 Y3 B' t  h$ G' L
0 F/ P) u2 o% e# X3 z
;;
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。! \( ~+ F" H& c3 j/ W$ M3 u# R5 s
let l 01 u8 z. s5 E1 R- \6 Y1 l
while[ l < people ]
/ p0 u7 ]: L; n4 f) N( V; @: ~;;
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
: U4 s7 L  m+ H6 a, ~[
2 ^0 A+ X9 s/ I0 B' ]let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
$ I8 W' W2 |- L/ d  z, ?8 Lif (trade-record-one-j-l-len > 3): J4 N$ {1 G2 y$ 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$ K: i7 P7 H- o$ x* `8 ?
let i 3
+ l" j3 b/ H  D( T, Alet sum-time 0
4 Y" \- c# r7 Y  swhile[i < trade-record-one-len]
: D+ x3 y" o# u; g! O& X[; l9 h6 A. M& n. }5 D' m& m
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
! o# W' Y; F% a  w/ Sset i$ A1 b7 T' A% n% ?( {3 k6 M+ y
( i + 1)
* w; r* f) v9 O1 Z$ y
]
$ F; Y. l( S; a* flet credibility-i-j-l 0" a. U$ U- v4 y: g) n0 f! R
;;i
评价(jjl的评价)1 i9 g! d6 r0 F* M; e" ]
let j 3
* A1 _" b9 z' H- H" n6 vlet k 4/ s0 [  I6 b$ u5 d) b) a
while[j < trade-record-one-len]9 a2 d' ]# ]& V7 c
[
( p/ ?, R) i3 C: Lwhile [((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
) p, r6 n+ b/ a/ fset 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)
5 w% {! E1 ^" {: mset j+ V" f9 s  x8 T- u( E
( j + 1)

4 s, U  m# j- n7 L; ?]
  _# H0 N% |! ?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 ))" s0 H8 z* d6 d4 u7 E! r+ Y+ |

9 C; |2 r, M. Z( T2 W5 J2 b# P1 o

% h2 x5 _2 h& e" H% zlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))( G8 N+ S. K3 K9 i8 U
;;
及时更新il的评价质量的评价% i3 ]% Z3 Z, Z  O4 }, F' c7 ^( v
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
9 ~9 D: Q$ r+ b$ t# _* _" f" xset l (l + 1)1 F  j3 [8 M# o0 o# j
]
" n, l4 u4 u2 }0 C. H9 w! Aend( ?7 u4 c5 `2 v
: m0 H1 ?) B9 z% ~3 w$ Q
to update-credibility-list) f4 n6 X% U( j  J6 M" u4 G
let i 0
- n  q. K) g' x( H% o* R' ~/ Vwhile[i < people]* |: p) j1 n  ?5 Y# q
[- \  U& G+ e9 V$ t
let j 01 N( C" }$ @, a/ ^6 k& X, L
let note 0& X& F" M. ], [# ^5 x
let k 0
& i7 J- @' [: v7 y;;
计作出过评价的邻居节点的数目
2 V  Y: q9 N) C- wwhile[j < people]
; d6 u% z) U" B  Q' A) }1 A[) K5 v' V  K$ U' G  w
if (item j( [credibility] of turtle (i + 1)) != -1)  A! C: P2 J& u1 a  V
;;
判断是否给本turtle的评价质量做出过评价的节点
( l2 E0 `; j' h) @4 c3 e" z[set note (note + item j ([credibility]of turtle (i + 1)))
9 K6 \! y) _: l' g3 C  p;;*(exp (-(people - 2)))/(people - 2))]
4 F0 _6 T, O( e. G( C; u
set k (k + 1)
0 `( {/ y5 `: K- ^5 ]$ O: K]
1 f  y& l: ~7 y, @, Wset j (j + 1)
, L  a2 k& ?- d8 s" h. d6 F]
% X$ T6 l' Z$ O, }- V# i5 wset note (note *(exp (- (1 / k)))/ k)
/ w  U7 k9 a: i1 x5 U- Mset credibility-list (replace-item i credibility-list note)1 _6 |2 H# {! a6 V
set i (i + 1)
) X  \. {' L! u& \5 `+ A]
, |9 D6 d6 s5 {: V2 b" jend7 O) i  w3 M" v- T5 \- S

; N7 C+ S+ l" m& I' V; q  \to update-global-reputation-list
: x+ ~: L  F- k' |$ Olet j 0- k1 y; z! ?+ X. a: V) w' t: f
while[j < people]
) |9 ?+ n  {( o[
$ T% r4 i/ p2 X8 C- P5 w4 [+ alet new 0( E% W1 T7 D5 ]3 v) @
;;
暂存新的一个全局声誉1 O8 E/ s1 {+ P& o  Q; E+ m3 a
let i 0# e- n* r5 W4 G; a$ d' v
let sum-money 0; j2 u/ \; ]7 k3 _: t. {% F
let credibility-money 0
3 E) ]# E! d: k- r; xwhile [i < people]9 a2 _* p3 P+ h
[
! ~1 |* e! D8 S! J7 Wset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))). m9 t: C% a! y2 Q6 f
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) j! O4 t1 b3 F
set i (i + 1)! J4 d/ h! Z0 C
]
: |4 W& E2 F: Y5 |! J& U. v- Nlet k 0
4 W5 e3 P1 j0 [4 i$ N/ w. V3 S2 B9 Vlet new1 0
  s3 k0 E; m" W5 }. g, Owhile [k < people]
& g2 f# W# C. ]3 r" O7 `[, _; i; }9 g0 O, c3 q6 \0 W
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)
/ A" S" v' t: c# b0 ]set k (k + 1)
1 W' p2 g  C& [: F2 c]
' o) f6 J: s- U/ F. }3 f! @5 Qset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) / H' d! j' c+ m! B
set global-reputation-list (replace-item j global-reputation-list new)3 }9 A2 ^$ {; T3 f& M
set j (j + 1)
( z- V  X8 x! h+ `& q9 T]. f% u+ n4 e7 {
end
* a: d* Q+ c- y+ t
# y$ H5 P+ i" [, w4 T8 r
  s. d- ^+ R6 p' U" F
7 W# h# R# a( B8 Cto get-color
% R7 F  J2 t& J' x5 R. [* R: E! W, h& D$ d# s# d1 l. y
set color blue
5 A1 Q9 P* T; }; ]; V) V) H6 n
end% O4 A0 F; L) n  L
& z+ g9 I& ~; e3 ^4 F7 f5 c9 ^6 G  n4 c
to poll-class
, Z) N* n. U1 @3 O$ ^9 Qend
$ F0 E( z# c9 I/ g3 c8 W! E1 }- J, ]5 w. q
to setup-plot1
5 z0 {8 P5 R' c2 w
' {+ r/ N6 Z: A+ ~set-current-plot "Trends-of-Local-reputation"

: J4 x$ u+ g3 D
/ S; F0 q- ~' o5 }" Gset-plot-x-range 0 xmax
! ?5 z7 x% }$ b& q& H5 d

1 X7 D/ O( D3 e  k1 aset-plot-y-range 0.0 ymax
* C  _2 X% P/ {( d( ]
end; I; I7 l" R- H1 g; r2 S

. _7 ?2 B- }" H6 Q# k6 [, G; Ito setup-plot2+ l) G/ |, C* J! d; p5 x  D
, j9 i/ Q4 F& T# @$ I! }
set-current-plot "Trends-of-global-reputation"

# [: n! R* y% T( F; g
3 [8 y$ S, p& \( G, c  f5 E4 Jset-plot-x-range 0 xmax

0 t# f: _, H3 E: _! k- V* `& I% C# ]& b' |
set-plot-y-range 0.0 ymax
- z5 d  c( z5 S7 J, j& ?
end! q5 e3 ?/ e; x! f

& z- ]0 [3 r4 X; w4 i% r2 U2 Yto setup-plot3
& O' v* {$ K5 ^. y- x5 ]5 J- i" _& ]5 l
set-current-plot "Trends-of-credibility"

  u4 ~& a3 B8 ]2 w2 s' V+ p; j$ p6 R0 |
set-plot-x-range 0 xmax
0 g8 e' R2 z% g& Z1 Y; [: k
( D; i" ^* B$ q* E% M
set-plot-y-range 0.0 ymax
" G- \  j) q, L! \8 N& Y
end
" ]0 F) i+ y. _+ ]. G0 V
/ x' u! j2 D2 U# o* i& p. N; Kto do-plots
& H1 @6 j3 j! O' e9 _' Z. sset-current-plot "Trends-of-Local-reputation"
9 w1 H* X' T8 G: B: Rset-current-plot-pen "Honest service"
. d! R3 P. S$ J# m9 Tend
2 T+ a% x  T: [' k$ d6 t0 G/ O" P1 p' ^6 n
[ 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.
# I' k/ ^' J- M4 A
7 r) N3 D) O) Y& f* e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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