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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:' i# {, P& @& N' c6 i7 g
to do-business 2 r* Y- f4 |% Q) N+ b
rt random 360
$ H' b, X! O: k! Y fd 1% C, _+ ?8 g. |: V; g0 z0 D
ifelse(other turtles-here != nobody)[- x5 m* e% G' H  ?
   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.$ _: K5 \. K8 p  Q
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    7 b$ V1 {  x  z/ v* l* b- r
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer/ b$ w; K% t- d" ~
   set [trade-record-one-len] of self length [trade-record-one] of self
# R; H9 I5 x. t4 C; z+ _   set trade-record-current( list (timer) (random money-upper-limit))
' N) I. B! P# l6 x; i& [
5 q! m6 ^$ G  {; ^0 \问题的提示如下:, W2 `6 M! a, _/ Q; K: _% I+ K

; q+ h8 Z+ a( j; ^2 Y$ X( ierror while turtle 50 running OF in procedure DO-BUSINESS
9 h; D: V, q- b$ }7 E  called by procedure GO
' K3 C- F5 D* ~, KOF expected input to be a turtle agentset or turtle but got NOBODY instead.6 c, J% W' a6 N% P0 S" Y1 K
(halted running of go). C% V' l8 ?7 N  S. [

4 \. }( l$ \+ |  P% Q3 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~~9 C3 L& T5 a6 \
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
, c" V( s& A  `% aglobals[+ f2 H: g$ Y& z, ]- }+ |
xmax% J  q  |4 J# F5 A) \* u: J
ymax
+ p4 f+ o) Y; ?global-reputation-list
, B9 e3 m5 H2 i7 b, L9 Q9 q
6 q8 ^( M2 ^6 l9 c;;
每一个turtle的全局声誉都存在此LIST
9 ]+ R1 F* z5 V) z6 Wcredibility-list
1 [" h: p1 B: u3 G. M9 E4 J: u;;
每一个turtle的评价可信度
3 u6 G) P! B7 B( ?5 k+ Shonest-service7 K6 [; a& K4 S
unhonest-service
( q+ q9 ?- H# F& o/ Qoscillation
$ b0 Z. i1 n4 G) s6 f( b- crand-dynamic7 k- i( @+ @2 O6 `' h
]) e! C' ^- z% |4 H+ h' @1 t4 L
" a1 }3 m7 t0 n4 p, c, I
turtles-own[1 t% R/ g* O1 G  L
trade-record-all
! |! ?& {" U! W$ r- ]6 q  J;;a list of lists,
trade-record-one组成, ?, [4 i0 r# n, I* R0 }2 S- c2 Z  J, s
trade-record-one
; N) Q& M- J! B;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
! q; p) C. d5 x$ I, [
7 Z* g' o+ \% ~  d;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]! [6 h7 J" s/ [0 v4 }- s) l: R
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]( Z1 W6 K, E$ n, l: Y
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list1 z0 R" L8 c0 {7 m& p
neighbor-total
6 g3 K/ R  Q7 r. K) C- r;;
记录该turtle的邻居节点的数目. x5 u0 B7 Y4 N, E5 }
trade-time6 N: \7 n; A& ]: t' D7 e
;;
当前发生交易的turtle的交易时间0 Z( t( Y: Z! R  n: f
appraise-give
/ W+ ?- @' W% o$ d;;
当前发生交易时给出的评价
( {. I) W- j7 i3 uappraise-receive
$ A& ]! u. ~% n( m8 f  V7 @% v, A# @;;
当前发生交易时收到的评价
8 t. R1 E% s6 C$ Mappraise-time5 |: {0 B( s% |: N  v
;;
当前发生交易时的评价时间0 p# v) P9 c( I# i* R9 Z* c. i- I, A
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
* l. A3 \4 ?6 W" c2 htrade-times-total/ E0 j- O/ L: \/ A5 b1 j
;;
与当前turtle的交易总次数
& S" o- h; b# e% M& l% Z  Utrade-money-total
1 m  P, ~$ ^" N! s5 v;;
与当前turtle的交易总金额+ N! o( r, k; R! J5 D9 p+ K
local-reputation) n- O6 [" O! \: ?  b; R6 P' a
global-reputation
- Q4 a3 P4 F( D3 @credibility
% I. \9 [" \7 @;;
评价可信度,每次交易后都需要更新& ]7 y* z5 n+ L& ]4 Z! l9 C
credibility-all; A  ]; z  U/ _7 B" U$ O: |; K  b
;;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
: A9 d3 R$ g" R  V" ?
! s) V$ T* t5 c* 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" X' ~; L4 d* z
credibility-one
9 G2 R+ Y- k2 U+ D1 J. r# f;;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
" `  }: u, y6 A3 ^/ Bglobal-proportion: k0 [  |2 W" D6 b3 M2 M' I. v$ G$ w% O
customer
6 n: ^( |' E5 `7 e/ ^0 wcustomer-no
* j  q% D8 h( V/ S7 ttrust-ok3 I+ P% L9 z; d5 k# C( V
trade-record-one-len;;trade-record-one的长度# l5 A6 h$ E$ |% e0 G7 z
]
" K, h- E# g: V. e" P( P. z0 T' S2 D8 F2 u. B
;;setup procedure
8 ]/ c* y4 @( i# F$ c! a
# }4 i; X# B# C$ nto setup
2 R0 ?' g( @7 M; b3 p& F& s) [. w
ca

# [# q: W2 n" C8 f7 Q( j% b# V
" E( D# R. c) O5 O# R% |initialize-settings

; Q9 G4 B; Q0 M# H* @0 y9 M; z) a
  ^: H0 ~9 l6 }9 L' |+ z, N0 Ycrt people [setup-turtles]

1 _" Q7 \1 w; j
# ?) J* ?1 [3 `& C. @4 Xreset-timer

2 {/ O, s# c) d' S7 }# p6 r, \& d% g" Y
* V2 a) q4 I+ ^* d, F0 Hpoll-class
+ q! Q  z, t' n

. ~9 Q1 r6 o0 s  P7 bsetup-plots
, U1 g1 J2 Y+ E7 P7 I3 l& [

& @$ L5 ]4 o/ _% Tdo-plots

) D  ^/ T& O1 r* ]- w6 Gend) r; ?- [$ V! `9 l" b$ R- r4 x
/ z; f. z" ?& i8 }
to initialize-settings
5 E1 v( w; _/ V0 `+ D$ ?# R2 e) q- o4 n4 ~" Y" S
set global-reputation-list []

" ?; B) x  \! x7 m4 j" V% M$ C6 U: {3 j2 Q
set credibility-list n-values people [0.5]

" h9 j9 p7 |  H& W* g! b0 T: f; D9 M0 I0 `3 H
set honest-service 0

; c- T+ D3 b8 I7 S3 ]1 z) [, l* ?" j  |3 [
! U" @' E8 |2 s! o8 A7 U- Q! vset unhonest-service 0
) |$ Z# a$ ~5 F$ Z
4 h0 [7 [- T4 c+ p
set oscillation 0

, H/ I7 h' ?" v8 l( |7 }
  ]$ q1 K$ n3 `& Z: t) L% qset rand-dynamic 0
: ]9 F5 [+ q  L- k! k/ C
end) M# y7 o3 z4 T/ ^

+ ?- G. }( M" u0 @1 c- e) Wto setup-turtles 2 V" x. y+ ]' V0 Z9 e" e
set shape "person"
) \; _" W* h' I3 Y- @setxy random-xcor random-ycor" n* ], M! H3 w' t7 z7 F
set trade-record-one []1 ]: z0 L; @5 m! [

/ N- t' Y/ m) C# }$ i5 Iset trade-record-all n-values people [(list (? + 1) 0 0)] # V; d5 H% e0 Y6 C3 [

0 {. \, h8 g% _, Y/ v3 h0 V! Kset trade-record-current []$ W: T7 k  E2 Y9 Z( u; J& F$ m; j
set credibility-receive []' P0 `" a% ^9 z0 F6 A3 l5 ]
set local-reputation 0.5
$ G& \. f# v  ], @4 iset neighbor-total 0
4 D/ U  \  v: H* A" Gset trade-times-total 0: a+ {1 J8 W8 p5 P; Q' ~1 R
set trade-money-total 08 A- h2 [- b5 k! z0 @5 v5 T
set customer nobody( J6 e7 r# i% M) M( P3 O
set credibility-all n-values people [creat-credibility]
+ J* `1 H' w' P" o+ Z( sset credibility n-values people [-1]
* A( A& L; @  \, dget-color
4 [+ Z6 t5 r' O8 C6 i; S
% `6 P& q2 p  J; F* h
end
: ^! d# T( i8 j: R
7 o; h9 s6 T; \: G# O* cto-report creat-credibility
: @' y1 U( Z# d& Nreport n-values people [0.5]: S8 Q' U5 R+ H% L
end& _' e8 G% N4 Q2 Q2 F) I8 `5 b
8 A6 i5 k& Y8 }+ C$ S( b% ^% }
to setup-plots
: n" V$ `$ M) N# ?  f
  Z: E! B1 N# Cset xmax 30
; J0 }8 ]" k: A7 S. `

0 Y- H9 z! M) y# B( eset ymax 1.0

, o( b1 V9 n/ Z! Y8 u4 ]3 z6 d$ X1 E; r! o5 I' X- ]
clear-all-plots
+ I! b+ W9 Q2 [& U: ]
: @1 ~; K. Z" I* S7 T, o
setup-plot1

! C/ i( V& }9 ]) U" `
7 F) y. g, f) ]" a8 ^, C3 k9 Usetup-plot2

" Q% {  i% M4 w" P0 c* k# ]# l
% u7 i% v( y& g: i' esetup-plot3
% K# F) y, F+ j) t  w" f; f
end
- \. G4 u: A3 I" f; d4 A, f+ V1 I5 U/ e
;;run time procedures
/ a4 H5 ^8 a4 V! o8 o: r& E9 W; c' t" T: T
to go# l/ K  T! z" d2 p! n( Z/ y& A
" ]! U) q* R3 {  e* Y/ Y! F  P
ask turtles [do-business]
+ o9 V6 T) [  D  t5 I2 l1 V
end+ c, N0 Y( X8 b9 v$ C& H; k

  n( _" |1 u0 Bto do-business
+ g' X% V4 g- g% Y  {# d. W
, l1 T' C, M2 A/ a- Q+ M
2 T3 }- V$ T9 T3 ?# C* C- N6 y
rt random 360

0 R& A9 c" T6 x5 i# S( V
5 e# z, d0 Q- W% i- @fd 1
5 f( v3 g+ H4 Y- Z+ U

5 d# ?5 B; ~, b2 K# c  f& k6 yifelse(other turtles-here != nobody)[

6 g. u. g' l/ m. ^' Y  o
' N+ M# N# }1 ~6 g7 ^/ wset customer one-of other turtles-here
/ x1 |. K7 e, p+ p  M

1 D" h) f9 M' Z( T;; set [customer] of customer myself

1 U; F3 E! f8 F' A( n/ U+ @6 [
set [trade-record-one] of self item (([who] of customer) - 1)  `- U: w/ g7 s$ N% b; Q7 I
[trade-record-all]of self, b' w% _# g2 V7 a, Q
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
, [  d8 S- i9 `' u8 {' {! l9 i! |6 b
) y  m# X: H( A9 U8 T
set [trade-record-one] of customer item (([who] of self) - 1): e) ]! D" K( P* f3 W- S0 A0 N
[trade-record-all]of customer
8 ?! S5 b5 r, j+ r

0 O. y; H/ G# o. E) Hset [trade-record-one-len] of self length [trade-record-one] of self
+ n2 }0 P( b* \9 M  P

0 Y6 s; V. z- G: `: I) K) H- P, B- a' qset trade-record-current( list (timer) (random money-upper-limit))

+ Y/ U! Z  n) [1 C# Q9 ]/ P$ m# Z2 p# n8 Z% v. O* L( W- A6 @! `5 z
ask self [do-trust]
/ Z9 a. Z" A) F/ w! I- e( F;;
先求ij的信任度; b, B' _' {& j
/ a; e0 I1 i9 E5 V& b9 ~1 R" o
if ([trust-ok] of self); ^, J; a$ R! z& a) q3 ]8 \  V$ \+ Q
;;
根据ij的信任度来决定是否与j进行交易[
$ E& ^" m# I. J8 c, x- Z; p" k7 bask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
# v+ z' K$ R3 ~; Z
' v& |& s% R- U/ g$ @[
# j2 u' n" m3 M" M# C

5 k! Q) B  N% P5 b$ Qdo-trade

1 n5 m5 H: n2 z
+ r. q$ Y5 I4 fupdate-credibility-ijl
! ~) N$ j7 @6 }' l$ g5 ], M
7 K( H4 }  q) G  p0 m0 L
update-credibility-list
7 h$ [2 l" J  l5 _/ c% R2 |% }% U

4 ~3 h( @% U- H0 `) X0 u( |8 F3 S; b/ A  a' n8 p# v; ]1 ^$ I/ k* ^
update-global-reputation-list
. w! K% U; ~+ O) W, @) {& I9 S: D6 `

4 ]  w- P1 N: n- A4 ~  a  p3 bpoll-class
: V& {# d4 r  {" j1 w6 H
) x: }! Q5 H3 v  A5 s
get-color

* }8 |! E' @$ s) t$ @, G8 [9 N! K0 x% W: D
]]
1 W+ A4 d. z: Z; ]- N$ E  P" }% f8 @
;;
如果所得的信任度满足条件,则进行交易8 L% A* D( P  k7 ?0 ^
3 P) n% m1 g6 D, E/ c' B
[
9 H7 v" o. n" S+ P1 B3 i) m2 R

5 N. J" X9 l% a; Y- n1 rrt random 360
9 z$ @6 i# [  t* @

3 M* ]! h2 z( i( D% b8 Y9 G. Y8 Sfd 1

$ A. \6 |5 w2 k! W3 a# L1 }8 W5 `5 h
]
' W! P6 b- c6 w8 z' q+ f  W
. Q2 K0 _, C2 o$ B; [
end

& k+ P* w4 ^0 c. z. U  V# ~& Y! f' P3 \
to do-trust & x  W4 t0 W1 k% j3 @- R0 \
set trust-ok False( V$ p/ s# A3 P6 F* ~: u+ d

$ m) Q( c. P6 T

7 X4 ?. K) q$ p1 I( C, G$ Clet max-trade-times 06 X3 c/ h1 `/ M0 y2 Z7 `8 @
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]2 |- y0 z6 ?. o0 `& L8 T& D
let max-trade-money 0
8 u% K% K- ~: V7 Pforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]7 l! f; `/ V4 L' M
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
0 c) h% ?5 d+ I6 V1 b3 i6 a; z' k8 Q
& b& W+ j( c0 i* U0 s
get-global-proportion
/ \7 c% \1 R3 flet trust-value
" F, x3 N! K9 g. e5 s. Olocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

2 S- D. w3 l  M* P7 Vif(trust-value > trade-trust-value)
5 z8 f$ \6 F! I( M+ B% I9 b; y5 [[set trust-ok true]2 F8 i& g/ L/ }+ v) W% C% T
end
$ q; i& k$ X3 H$ w* |; y  ^) ?3 t  D3 Y
to get-global-proportion
1 M3 g5 E8 T0 D: Gifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
; a3 m# o% X1 a6 O# k' W[set global-proportion 0]. x$ ~- y$ K, L" v3 t- \7 m! n" W
[let i 0) `% z8 P9 Q8 q9 b$ T% L
let sum-money 0
" q- s1 S! U" q0 b$ A5 `while[ i < people]4 z6 j5 Z" C7 i
[
. P- x  B) K7 l9 j1 c0 _if( length (item i. G2 T& d0 ], \# _) P; p
[trade-record-all] of customer) > 3 )

1 {. B; r$ Q) Q7 V% b; c[& h3 b/ a' [  Q+ k
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)), j. j: U, Z2 x, H
]
! G" I* Q+ {5 T]
( Y# H( Z3 g( _) `; E" s$ \let j 0! l7 ]0 I: U5 b- L/ ~# j
let note 0
" z* @* F9 _# U& ~7 _0 q: ywhile[ j < people]2 [! ^  T" v& K. L" m7 l7 N
[
: S2 k7 G% p; i2 Xif( length (item i- _& Y. D7 I6 t9 i6 e
[trade-record-all] of customer) > 3 )

" h. h( H/ J; y6 a; c4 G[
% c5 e" x8 o$ P$ [2 L  Iifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
2 b5 v, e" A& s6 U[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
+ [7 S1 g, ]7 d" @6 H/ i; C[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
' O3 y/ }" [& P8 [  u! o! V( B]
! v8 B. l* l+ [% p  q. k]4 L5 D  Y# `, h7 Q) b1 H
set global-proportion note
0 g/ h" `' L- d7 U: ^]0 x- Z4 @0 ^5 |5 p; J7 e  S7 I
end8 c  C8 {& h; p: Y4 F: N

& m1 m. a: W. e! y6 Yto do-trade! H2 @9 ?% f. a( \1 Z
;;
这个过程实际上是给双方作出评价的过程
, N& L. n8 U2 y( _# {' ^& J( h2 Nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价% M3 c: n$ w1 P! \, B
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
4 ?. U& B+ ^1 `1 V: c9 \2 aset trade-record-current lput(timer) trade-record-current( S2 @5 b' Q- K1 L5 {9 w
;;
评价时间
: b' X$ u" @& M* Q* N8 Fask myself [
- w5 i) H) p  n9 V# n2 c8 q1 cupdate-local-reputation
+ g, g# {  f  W) K7 Zset trade-record-current lput([local-reputation] of myself) trade-record-current
4 b& m! u5 H7 l) N]$ s7 r( f1 Z; j! ]5 @& W) E# S; ?
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
4 u- [# O0 S! T! f9 y3 z$ l6 t9 I;;
将此次交易的记录加入到trade-record-one& K; _- `: L5 Q5 r% K: v1 _
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
( |) h+ Q) @& j" ilet note (item 2 trade-record-current )
  Q! M) |; a  s' _1 dset trade-record-current2 ]7 O  h5 [9 D" U# c5 r
(replace-item 2 trade-record-current (item 3 trade-record-current))

) t  G& O) ]3 G8 Z! e" r( C( sset trade-record-current8 u* q5 _. B2 \# p- K, |! l
(replace-item 3 trade-record-current note)
* ]6 q8 Q# r0 B5 h8 w' E4 n, t. E# J
. `) \' W; a) B* l
ask customer [8 w% D. c/ e) o0 z3 H
update-local-reputation
3 U/ P  J) D" i9 A: iset trade-record-current
( N& {# Y+ ^* b9 j# U* I(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

4 {& t$ u. \$ u9 @  U4 ~% I]
8 `6 {" Y5 z& t: Z
+ B/ p1 M$ q, T3 Z

# S( o: O& s4 m8 Fset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
  @! v0 k% ]4 [1 q8 @4 m1 i/ R7 c

0 Y+ K" H& V  O5 }8 I$ ]set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))9 h+ V" r: U' w' I+ c* |
;;
将此次交易的记录加入到customertrade-record-all
4 Z  \# J* `) Y) \. l2 y) z, w7 uend
" n& `. \7 a; r3 d( f8 Y9 y+ _8 \
) K+ M$ z$ s. j1 N- n1 ito update-local-reputation4 S8 q& s7 X% A0 k* X1 d" k
set [trade-record-one-len] of myself length [trade-record-one] of myself: s0 b* t9 p6 @& `3 }

) \' Z# x5 I+ i7 L! R
; n0 T8 @! r1 z& L. \  X;;if [trade-record-one-len] of myself > 3
- ~7 O; w" D& j9 G0 `/ p1 b6 h. Y
update-neighbor-total
9 w4 n. Q- C* U7 W' g% k: B;;
更新邻居节点的数目,在此进行+ b* g) I. T/ u
let i 3
8 G4 ^3 l8 {3 N7 s0 E9 B& [let sum-time 0' Q5 ^3 o$ ?' U- b+ Y0 C0 N' d0 q
while[i < [trade-record-one-len] of myself]
! A) t0 o- C# {6 {0 P/ q% I8 `5 e[* |  o$ t  S$ w2 \: l
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )3 {1 E; I4 B% a) b0 Z( e# |$ _" B
set i) Z! b$ z& p" B8 }  ^& |1 `
( i + 1)

! Y8 L+ B4 I$ Q  r0 k, Z]
5 k3 p% n0 [% X" n- tlet j 3
  Y$ @+ M! L* Elet sum-money 0
2 Z* P) `, p! lwhile[j < [trade-record-one-len] of myself]. B0 u$ [" w3 R
[
; j- J' i+ E. fset 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) y$ j3 Z8 J/ f8 cset j$ b' M2 X3 E' I
( j + 1)

0 D8 g' B! [& I7 N2 d, c- ~8 a]
7 v5 r2 t" B4 d" V; S" e# M8 ~! Glet k 3
, R" h. z0 b" J5 Z% klet power 0- v  ^! l' W7 N( g* B& v
let local 0+ x/ z  p; [6 Z+ ~' t
while [k <[trade-record-one-len] of myself]6 i  }- r7 p  [: f+ u% d
[
6 [# p$ s0 S) W+ D+ S, j1 Oset 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)
, v; Y1 D& D% F7 oset k (k + 1)6 D2 s( @$ v! U7 h) D
]# P' J8 W8 R- J% k9 \' e
set [local-reputation] of myself (local)3 j; ^1 L. w+ L6 e; J; t6 t
end
* O% T: L5 ^0 G- H. ~- _6 R' q# p2 D" Y
to update-neighbor-total$ J, `2 {) P6 x: a
- n  |( s5 N5 Z5 p+ K; u& i; z0 ?
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
! u. \; n5 T& r4 N* j: G
7 {* X& v- c$ g0 v. U4 w7 R

' A7 S7 o8 A  ?+ T  J- eend2 n" r" d/ ^+ h0 r8 k

2 E$ x6 b6 ~% {to update-credibility-ijl
& r7 }7 F6 N* E% h8 Q- e& c6 u
7 \; n, R% j  ^6 R  ]7 @. Y;;
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。
' d1 U$ @& C  L7 S% F/ W: x  k- rlet l 0
0 m5 U7 _4 \8 s3 Y* Q* ^while[ l < people ]! o& X4 l. `+ |9 i' [4 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
5 F, f8 f8 [6 G/ _$ J# S[
- ?) t* Q/ E% ^let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
" k) z% j, j" V1 [) ?+ E( Mif (trade-record-one-j-l-len > 3)
  T  [7 C5 }- y( 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) }4 K$ N$ C6 y6 q' V
let i 3, g& a) g; h. k, I+ z* E& F  C
let sum-time 0
+ H$ X1 R5 ~+ E7 F/ _while[i < trade-record-one-len]
7 y+ f) x- o" o8 }  i( V[
5 }. L8 B) ^0 @* Y% F3 |6 `set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )! R8 F6 x- g0 y0 z6 _7 |& E
set i
& g& k$ U* D( ]: R' A8 S( i + 1)
( [3 N3 c. N* t: X7 m
]% M6 n% ?1 w. n' [& X
let credibility-i-j-l 0" x6 v+ g; Y* M+ ~/ F
;;i
评价(jjl的评价)
) u& ~1 w3 L1 c& Clet j 3) _$ P$ U0 A+ l% _* J2 n: [2 D3 m
let k 4" r+ `# h' z& Y! A( A
while[j < trade-record-one-len]
- Y# m) U3 g5 g/ I# M8 p[* J, x% b% U) Z; M; i' ?
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5 z. Y9 S5 @- Y7 X
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)
4 D( D# F$ H2 ]) P$ C6 ]: e( s* Fset j4 b6 Z, n8 f  ?
( j + 1)

# `) I& T- V& T( ^( \7 ?]! Y( @! s: }8 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 ))
* r5 }, }4 T5 L6 o! {, w  m4 q) ]+ l8 k2 F9 d! M9 R: ]7 }: \

: C! G; ]6 H( \5 W2 K$ [4 Clet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))% Q, C3 {3 @' S/ o% D* ]) T
;;
及时更新il的评价质量的评价
0 N' K8 o3 H4 O6 R; L+ K- Pset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
. }/ w3 F$ b6 P" s5 z% ]2 \set l (l + 1)4 _% q5 G' P) |1 y( _6 |- L* f& Z" e
]
# W: \+ C% t2 oend. c, t3 ^+ |! J: [9 ?/ F# g2 \1 X

$ z1 ~" `' r# O# y) }8 qto update-credibility-list" X7 S7 [- \4 l# q* ^- X8 t
let i 0. I5 x& }" P. c3 F$ t& H5 o
while[i < people]
% H9 _9 z& o' x' B6 r: K[
, H% t: S2 j3 l! tlet j 0
/ g+ L: @3 C$ N9 p7 elet note 08 B6 R5 u! O! j2 @5 f
let k 0
  D6 H5 \; Q. B;;
计作出过评价的邻居节点的数目; Z/ I, ~2 G' r. ~) g7 q; B
while[j < people]2 |; Z6 L3 A% R
[
  U$ j% W1 J, _  Xif (item j( [credibility] of turtle (i + 1)) != -1)9 @+ |* ~' t; ]) \9 p6 s3 c+ S. Y: R
;;
判断是否给本turtle的评价质量做出过评价的节点0 {4 G. ?$ T4 f* \" _* h; y8 |
[set note (note + item j ([credibility]of turtle (i + 1)))# E8 q2 t% y* Y  ~) i7 D
;;*(exp (-(people - 2)))/(people - 2))]
* `  a; v/ d( m( D1 x6 A+ }
set k (k + 1)% o. \' ]. J; k$ N
]
7 K# E6 `  b% B( j+ A' m+ aset j (j + 1)% }4 M) {, E7 p- Y( ~$ a
]
( r. R8 Y+ U+ Dset note (note *(exp (- (1 / k)))/ k)* O" ]. S# L" |  ^5 G
set credibility-list (replace-item i credibility-list note)
: K7 K$ G) K  f3 n3 `3 rset i (i + 1)# k4 A6 o6 T. K+ U
], G1 i8 o8 J. |
end
- k! i" ]* W7 o) b4 \0 O7 k2 H( O6 {3 V  C: H
to update-global-reputation-list0 O7 I8 i1 Z; G& `7 U
let j 0) V  c0 y% N2 ?6 z% k& _6 O5 `
while[j < people]
5 n+ ~) Z1 w8 v9 a0 ~[5 t6 ?) F$ m; P: ?' m+ Y
let new 02 z' E* `5 [% B$ V& h) J, l
;;
暂存新的一个全局声誉1 n, |& K# L' i5 h8 ^
let i 08 c- s8 s' t  f8 T5 Q
let sum-money 0
& u* M- N+ D+ T  b2 ilet credibility-money 03 g% U/ y6 U" H3 D9 V& H+ {) t
while [i < people]
8 ^7 h; Q, G3 j0 _  N[
- l7 @8 M" _6 C) ^) P1 R1 tset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
1 u% o- |9 B2 i' gset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))* o3 i2 z: U" p- z
set i (i + 1)8 B2 w" Q2 C$ X
]7 |. x/ `  t+ [
let k 0
% `7 f6 O4 J9 j7 f' \& Ylet new1 0
) {7 n9 O' `  h4 [$ m  Owhile [k < people]/ y) I" S  L$ ^. R
[
4 S4 k3 r' G% i5 N5 Aset 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)8 \/ _: L* v- I) h0 O+ U/ _5 x* g. K
set k (k + 1)
2 b$ s' _9 l- G+ G( W! Q! V. I]8 v( D# X& J0 z. ]) |+ }
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) # P' j) X  N" y5 h3 ?
set global-reputation-list (replace-item j global-reputation-list new)
6 h4 U! Z* i4 O, s6 `set j (j + 1)" T% s5 D5 ?% d6 u) m
]. g9 o" f  n- O8 C5 E$ w
end  [% m" F7 ]  I5 L) {6 z
$ I8 f+ d. E9 ^4 t1 V
1 C2 l1 @6 O4 V5 F* g% O3 `

# A3 s% `' {$ B9 o$ a  C" hto get-color
. C; k) T0 I+ O6 R# p/ b; T
/ J  C1 I( a0 y, a& v$ ?set color blue
$ U; j" w6 w) @, J
end
; [2 k* m: K; D& f5 o) Z% P6 y6 z8 g* U+ _# [
to poll-class
- H, M1 P/ I% n6 C+ d$ S/ F0 Gend
" k9 j4 S  L% F# n$ `4 K
/ d% Q. W; a7 r3 K9 m& x% Nto setup-plot1
- Z! d4 F. Z8 [' z
. y4 L" _% S- p. m/ rset-current-plot "Trends-of-Local-reputation"

8 R! m; U# K4 g# T
+ e0 s1 W+ n# K; G% X3 ~3 [) ~set-plot-x-range 0 xmax
' l7 |3 d7 s" }) b2 [

) v% V- Z( b% x; eset-plot-y-range 0.0 ymax
9 _/ M5 v+ }" ^$ `  S. `  x/ C( e' G
end9 W, [' p1 ]4 r3 ?' E6 o

% I/ I  G. v6 _2 I4 s% u2 \to setup-plot2
9 `% {, C: \9 I+ v, T# m0 \  Z
5 o. g1 ^% J3 k$ G7 L7 Oset-current-plot "Trends-of-global-reputation"
+ d- Z! z# w6 }+ a& e! V$ n
9 d- K. P" {7 W
set-plot-x-range 0 xmax

3 g" p$ t& T; _  Y0 C5 j6 \8 B' z  L' t) j& m1 o  X1 Z8 u" }
set-plot-y-range 0.0 ymax

' I( f1 H* v( zend# x/ f" c( U4 ~! z! ~* U

5 F! n4 s# [8 `$ I4 X7 n1 S( ^to setup-plot3& y5 ]9 h' n4 T; a4 ?) s
# s3 |: z8 h. @* m0 l, W) o& K1 A
set-current-plot "Trends-of-credibility"

, Z/ H: B8 |) D; f1 I. n/ V8 m) A( E2 V. ?
set-plot-x-range 0 xmax

# ^3 m( w# w. G  o6 B! P  {* E1 q. A3 L0 {' d; N0 ~
set-plot-y-range 0.0 ymax

/ ~1 q8 C2 O. z) b% d& ?$ b4 q# Lend
+ g* l$ o# o2 x1 y8 n) E: Y# j8 ~0 L; |8 L
to do-plots: S) x! z+ G* m' @; H8 h1 |$ A
set-current-plot "Trends-of-Local-reputation"
& R; x/ k! Y# }+ e0 `2 u& f8 pset-current-plot-pen "Honest service"
# L5 p$ h9 J. Nend" _: w. p9 k0 x) }& ?
# a7 M8 [9 @* @1 ^
[ 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.( b1 {; O7 ]" L1 B
' u! G! @7 u; x2 M' a
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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