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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:- W2 R6 Q; e; q( R8 W# F
to do-business
+ E3 o2 g* q7 u+ B$ c& u+ x, A rt random 360& C( X7 l) m5 j9 m: q
fd 1+ X4 B3 e4 L6 w; ^' t0 D
ifelse(other turtles-here != nobody)[
* O1 v4 F" S: G. x   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.5 \  y+ A4 O  I# `/ _
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
2 N4 [0 m: W- J( i: ?   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 c# o5 W/ u7 P
   set [trade-record-one-len] of self length [trade-record-one] of self
" i7 k4 d7 N2 j6 o- W' v0 `) e   set trade-record-current( list (timer) (random money-upper-limit))7 ~' u* {6 I2 Q. j! S& t0 X

0 q/ N0 Y  i( H" @: N问题的提示如下:7 S$ b/ Z9 ]; C6 X( o1 y
5 a9 B: z2 |7 K0 c3 l- P
error while turtle 50 running OF in procedure DO-BUSINESS
8 u/ L9 A" U; W9 t, U2 k  called by procedure GO) ?& w$ x- Q2 e5 F* e* V# b+ u
OF expected input to be a turtle agentset or turtle but got NOBODY instead.' R3 @1 I7 {8 `1 L/ ^" e
(halted running of go)6 B% W2 g2 _( T* W$ Z
8 F+ v3 @8 e* e4 K
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~~* R& z& g* j+ \) s  _
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& i0 j$ {3 j0 Q; B. O( M% H/ `
globals[# S6 Z# r3 e/ D7 O' Y$ `, ^
xmax+ h8 p, L9 d* |4 c; K/ \
ymax
3 i6 g7 W3 q5 {/ Aglobal-reputation-list1 ?* x5 b- W7 q: L) B

. P8 i# E% C) l+ D: h' Z, f" q  \( |;;
每一个turtle的全局声誉都存在此LIST
* O, V- Q6 L: M% Rcredibility-list  N: `; S* B2 H
;;
每一个turtle的评价可信度
2 u: ^0 X) f. m5 Bhonest-service. V! O" k* j1 A$ h8 @5 m3 h! p
unhonest-service
, n5 J8 L; Y3 ^oscillation
. P6 e1 d! C( B2 `rand-dynamic: D( ~/ Q2 j  k# G2 S* u
]0 t, h# c; r3 ^
3 W* r; O# q; ~2 A- c
turtles-own[
- E, `' N: O; h- G/ E! t4 f& F, }5 Vtrade-record-all& Q7 K+ j7 t1 q1 N4 r# h: S8 j
;;a list of lists,
trade-record-one组成) `9 _6 ~# m2 W4 J3 v" [3 Y5 W
trade-record-one
& c/ j8 u+ a+ 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7 i# s% L6 J, s7 i

" C1 S8 z2 w: {% p;;[
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 G( v6 X- R: e
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]5 {& r$ z$ W- p) o% t8 J
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list4 _1 |: m4 ^# t0 o# J
neighbor-total& {, c1 E  o: p( b9 \) W1 c" |
;;
记录该turtle的邻居节点的数目* s" A; R9 F0 y
trade-time
) e! k' }* y  Q# [5 a+ D+ B;;
当前发生交易的turtle的交易时间
* T  L0 [. a9 I7 C3 `) w* gappraise-give
7 |" X& i* p: [# [, v7 _;;
当前发生交易时给出的评价" m+ e( X9 @% q' Q4 N" O
appraise-receive
! O. w' I  `- }) A/ H) E;;
当前发生交易时收到的评价  t6 {7 ?3 B# C& Y7 k; D/ U- U
appraise-time
0 E1 h4 ~% Y2 M% h3 s4 s* p;;
当前发生交易时的评价时间8 P" h4 v$ L% w
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
6 Y' ^7 G& F( S' g$ S; Ytrade-times-total+ b- f  W( e: a: o5 A
;;
与当前turtle的交易总次数
6 n; P; ?1 I/ utrade-money-total
6 C) G. v! a" e# p;;
与当前turtle的交易总金额9 s4 S8 @. h9 h- M
local-reputation
4 Z5 P4 J# Z# s* zglobal-reputation7 k- J1 A5 r9 W+ Z8 V
credibility0 X: `6 p0 O" L3 p
;;
评价可信度,每次交易后都需要更新, s, h5 B5 J1 w9 A5 ?+ T; ~' h! C
credibility-all2 T; T0 m3 U0 x9 q8 v+ R
;;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
; k+ e  c  ^# ]) S+ y7 b  i4 l' z) n: b
;;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0.55 \  K  t) d& h; r
credibility-one
4 e* o& K1 ~6 t( R0 Q;;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$ q3 e, V5 K2 _6 F: ?
global-proportion
7 o/ Q7 k1 u* X7 Q1 [1 ^customer) b- u# e0 I& Y# y- ?. H$ C
customer-no
5 Q3 R. w4 U- dtrust-ok
) B& w7 N! K" Mtrade-record-one-len;;trade-record-one的长度* O$ D8 U3 n* |! Y$ P
]
4 _% t: B- l. l7 t6 v. z* p; M( A
3 |! K" F0 H  t;;setup procedure
9 r# B1 }& E# C3 h( W. L6 t0 V- D1 {, Y' @0 B5 P
to setup6 f$ Z; C8 F) U( o2 T4 D
5 R! `. d4 i$ Z. T8 \% x) h$ ?. e6 C
ca

/ U* c7 o- C' Y- U7 e& @. h5 x: B; z: _0 T& B/ g
initialize-settings
# X8 i- U/ d( B( K' A. ?; d) f+ w
" R  ?, N- F- s) v, [% x
crt people [setup-turtles]

# c0 t5 B6 z8 l4 I4 u9 @' D1 x' ~, {* F& ]' L, e) v
reset-timer

: P& M! H/ T( I# g
9 j* X) ]$ X5 n7 ]8 E" K9 O8 Wpoll-class
) g+ [/ }2 p: G6 C8 ^
& d3 |6 A; o  Q8 f/ R
setup-plots

. T& e. y- |: d$ F( u
$ @( K6 y  |/ I* e+ ?do-plots
* p9 ~: d8 g: Q5 F& ?" v
end) L. a$ L, v1 U1 t

# a% r8 Q, _1 C& U3 ~to initialize-settings
9 v3 A. r2 Z/ _1 ^2 h
# V, x! W; {' w0 }7 i6 eset global-reputation-list []

% P& l6 R+ u0 G" w9 I" z3 a4 ^0 |. n  T9 l) _- q
set credibility-list n-values people [0.5]
  N! p- ~5 m4 _6 A7 t1 {0 H
5 Y6 R* U( R2 J+ w! ?6 {
set honest-service 0
5 L% Y4 ]+ h* i/ H! G
* W  ]; x& F5 P7 Z9 [: a7 B
set unhonest-service 0

( N# p  Y& y/ L* i2 X) _9 N) W. F5 Q4 M/ p; E# V* E3 t
set oscillation 0

; K! b( L" d$ J9 w3 j- C3 o* ^& B7 b. {* V+ ?% M( Y2 \/ p, o
set rand-dynamic 0

; t: F& G. Z! f$ r4 q- Rend
& L/ J& F% T+ A6 D  [. g; q
1 G0 K2 j+ x9 {to setup-turtles 2 G9 T8 [* C2 g7 _' G, T$ m
set shape "person"" j  i1 u. A0 c5 W0 V
setxy random-xcor random-ycor0 ?& q" D6 {6 i' t% G/ b
set trade-record-one []
- N5 x5 T8 B- R, D. I  |- x
6 V  K* s8 W% P
set trade-record-all n-values people [(list (? + 1) 0 0)]
% A4 i0 S8 V9 m2 S
- |* @0 k' f# u6 P- S
set trade-record-current []
+ ?* N2 z# a) Sset credibility-receive []+ a. T7 H0 ~$ X* ?6 B5 |
set local-reputation 0.5
. v$ N3 I5 N% |4 a# Zset neighbor-total 0) o2 L) n) b& d. x/ N0 ?
set trade-times-total 0
* X  I0 @& ?2 m9 u, ^9 y/ tset trade-money-total 0- U# f* W0 \4 E( G' K
set customer nobody* H3 z/ O/ z& ~2 N/ M# O- F9 r
set credibility-all n-values people [creat-credibility]9 p! Q3 @: d, f; w1 d8 I
set credibility n-values people [-1]
, ]) |9 K; c* H- A: D/ ?7 f4 Uget-color  t% \" h# r, V# k0 d+ @

* a; N! d' p& Y  o0 T% p# R- Nend
: l. g) r1 V' v# L; S6 {+ D7 y; M0 |( P% ^
to-report creat-credibility
; Z) k, N; Y$ _. F6 D9 A3 dreport n-values people [0.5]
$ n: N# m! R$ s/ m" e% Mend/ f# i2 z! Y- S5 e/ I& V

0 ?3 X  }% t* `, g9 \to setup-plots
+ k0 E9 `& ~; s, S7 ?' E% v  E' C- p2 B* W% C/ i# r
set xmax 30

) V' T0 m* O# U/ J# F1 i7 R1 D
7 S9 p! H% Z6 E3 D: n& N) I0 sset ymax 1.0
* n' R; b! O5 @/ J; Q- y  C3 C- p
  b2 L4 t* ~1 E2 o! l7 n- @
clear-all-plots

+ K0 r; W' ]/ g- p# m, ]# \: I% T6 g, F) _& o( O
setup-plot1

) ~" t; h) B/ R, m+ r/ ?! K, p6 s: I: j2 e5 T7 P
setup-plot2

: }2 h( s, X" a1 V6 M$ w, \) n! q# h. N1 `
setup-plot3

  D+ D6 O& v  k# h$ ^end
3 t' k$ R2 m, y3 F- V- u. ]8 w  d; W
0 F7 v0 ^8 b7 w) M$ F;;run time procedures: A! O/ Z. {1 Z' W( A

+ B8 i* [% z! K! O& ^5 Fto go% R8 V5 J; s" M
/ C, I  @1 Z3 T" ^0 |/ Q3 l
ask turtles [do-business]
, B. X0 w; L. j) @' I/ Q
end6 ], O$ R" t! A. e# w
# d0 }+ r8 e( P1 B
to do-business 4 ^. l6 W$ r4 H. T/ O
! O3 [+ B* x) C

. ]0 |- ^8 y# j' z* O' prt random 360
8 F$ }! z( X- ^
$ p) F6 L# t  r1 u' r3 O5 c+ F
fd 1
/ w8 _* W3 S4 j; _6 g0 I! A

, o5 R( _' z+ d8 `: U$ fifelse(other turtles-here != nobody)[
% `/ E# c6 O% ~) u2 Y8 w) @
$ g; Y  Z( F3 x8 b
set customer one-of other turtles-here
7 a- d+ s; \3 M3 _9 G

9 Q7 r0 P. Z" u* Q( h% ~;; set [customer] of customer myself
/ j7 e- Z) G4 j; P7 s3 c" r
3 M  L$ e  C; s$ B: A0 @
set [trade-record-one] of self item (([who] of customer) - 1)
% `, u9 P1 ]' z- ]3 x% `5 d8 Z[trade-record-all]of self
- k# J3 e& _$ \( @2 D& I;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

* y7 `. j% M9 ]5 J
- A4 s; b: b% @) n" [set [trade-record-one] of customer item (([who] of self) - 1)
3 a1 D  l$ }, j' q$ e[trade-record-all]of customer

* o) k8 e1 g$ e# I. D3 A+ Z# a4 h% \5 F  E" i. V" b% G
set [trade-record-one-len] of self length [trade-record-one] of self
% v  B7 m. A, q4 P( s/ Y
; I* Y$ l' H0 ^7 `0 i/ u
set trade-record-current( list (timer) (random money-upper-limit))
6 f) C& j: a( ^
" q7 n$ X! H& _
ask self [do-trust]
) W2 j% P3 d0 a6 ?$ a% B;;
先求ij的信任度1 k3 l7 ]# C! U/ P, v* K
9 M8 J' b* g! ?( ]9 |' H
if ([trust-ok] of self)- s. z; y; J. l' G% V
;;
根据ij的信任度来决定是否与j进行交易[
# y) @! g8 r. e% Mask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
" J; t+ K7 E4 v5 q& E0 r4 j
+ x/ s, l* O9 D% x[

: \1 n9 K7 `9 Y, F7 ]7 G, B
* V3 k5 `0 y5 ?do-trade

$ I: H+ C$ J9 ]3 ]4 p2 ]- M
3 x- G( R# x2 \  f9 f' L# Xupdate-credibility-ijl

2 ^) R& M1 T2 p2 _1 s+ Y9 a! o8 v8 L6 a7 ~9 K$ p& O4 `
update-credibility-list7 V; k1 t; d) q: K; C& P
; g8 w$ G2 q' s4 d

; O* I$ j. J; ~2 ^: [( c* Gupdate-global-reputation-list

; q7 m  I; D" i0 P7 X- @
" M" a1 m: u) Y, F/ C6 u% fpoll-class

5 o# h( ?. J3 A7 f3 ?: V% f- M' b. K! W
get-color
9 n7 e1 K- c( p9 X7 t
; I+ f! m/ f6 j% T
]]
! O7 g: r8 p6 E; t7 e0 E8 p1 B+ z9 x6 y' r% s. k
;;
如果所得的信任度满足条件,则进行交易
" [) q8 D0 E! }1 \! A( ?6 r) O% A: Z& }4 x
[

9 S$ S- s+ v" r& q
2 F/ N, g# x7 ~0 s4 c( i: I& f8 ?rt random 360
, U, e' a) ~6 M) ]) d: c/ S
! z3 \. u4 d2 C
fd 1
' }7 r7 C0 T+ v- C0 S; p  |
' L" _0 V+ [  o& g
]
0 @* H& D# S* r( h
- @* K, P% G+ g) N: j
end

$ e+ ?: z4 J: X+ Q  g
( [5 P& ~5 t- M6 Jto do-trust ) N  s6 f  j- t' I+ r) }
set trust-ok False
! B3 X) _; I$ V8 m/ N- b1 O$ q6 A9 J$ p. u) o: `$ o1 M( S

4 ^9 M% v( u7 {! J, \let max-trade-times 0! |8 ]$ Z. Z. h0 `
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]8 U/ z2 l/ d* e& Z
let max-trade-money 0
- d0 }! A2 J1 g# ], \; @foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]* g6 ]% X. Y) r7 w( i
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))7 y. v: M4 O2 _3 T

5 D" T/ J; h. E( A
! N- t+ l/ N( f/ R$ Y
get-global-proportion
# _, l; a4 A" E  llet trust-value) r3 b; f$ Z: B4 {7 t2 I8 [1 C
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)
7 N* j* s. {! C' J
if(trust-value > trade-trust-value)
4 R' W. z5 }# [: q8 ][set trust-ok true]7 ]: R4 d, j; v" \  u- w; x
end
" W1 D8 {5 E9 a
( w1 V( y$ L6 N5 ?/ Y( Lto get-global-proportion
  V# ^  ]0 B6 ^5 l( eifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)6 {3 N) w/ ?; y6 `, @
[set global-proportion 0]! o6 Q6 `" j& M2 F" S8 Y  z1 P
[let i 0
4 ^1 w. y) b4 e& p$ f6 }let sum-money 0
4 [' g5 o4 d/ Twhile[ i < people]7 M3 w! z0 d; d+ F$ b
[: }, k, v! w, L4 k( e
if( length (item i
2 s& ]- o( h! d# Q[trade-record-all] of customer) > 3 )
9 N' Q  b, v! @. z
[$ F+ R1 M6 }) p. E+ e
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)); o9 O: }# ?2 S) l( u
]
8 ]' C/ |" T# A6 h0 I( f& V0 D4 d" c2 i]
& k& Q9 q9 S8 Y1 U5 C% q1 S1 Dlet j 0
& l: D! {  Y# N5 t$ [let note 0
, C. T. L  Q" M4 y# \; Q- @while[ j < people]
8 b+ g2 b5 `  Y5 r* L( ~9 b# k[+ U( @% }& c9 ~2 X2 h& ?/ z5 b
if( length (item i
. T+ A$ p& }) w, U, S  Q[trade-record-all] of customer) > 3 )

; Z0 z, Q" g8 n. W5 C' I[
) `5 X5 o) X7 iifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
$ s* z* y( }) [; q[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]" A9 z& B& m; i7 P
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]9 S. {( S4 ^1 V2 J. ^
]% a% \# O+ P7 o1 j! g
]( h4 Y5 ^: y' p
set global-proportion note
' c7 A4 g6 I+ ?$ [( J]
+ n: H3 }0 u/ i4 W) g9 Mend
$ v4 b* Z; h6 G* @7 g
4 P9 {8 k4 n; Uto do-trade
7 T1 o5 d9 X( ]2 v1 z* |  B3 I;;
这个过程实际上是给双方作出评价的过程+ R% D' H! I$ B- o. A4 d
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价. G' X/ L) b2 I& R2 C7 r
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
' K! N4 J8 V' wset trade-record-current lput(timer) trade-record-current
) B3 O9 N  N; l% t3 Q, r;;
评价时间5 v0 @; O, \% i
ask myself [/ {( _2 `8 P, ^, Z' V# j: E
update-local-reputation
. g* A  i$ M) Nset trade-record-current lput([local-reputation] of myself) trade-record-current9 q( `2 q6 m& U0 P- k% Z5 R  J
]' G3 o0 _8 \7 a* H% o% C! l
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself+ L$ l0 G3 r( J1 z7 a) r
;;
将此次交易的记录加入到trade-record-one
5 q* ]( t6 m6 S2 ~3 n* Z$ Cset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
3 [+ w; F1 {6 B8 elet note (item 2 trade-record-current ); d/ i) i6 k: R
set trade-record-current
7 d$ d% _$ k  F- \3 r( E4 Z(replace-item 2 trade-record-current (item 3 trade-record-current))
0 f! K! M2 a6 n* F
set trade-record-current
0 ?* f* |& a+ A% x; K- _9 G(replace-item 3 trade-record-current note)
6 [5 y' {( `% Z8 g* ^2 ~; \" G& P6 p0 o* q% ~) h

2 e) e: z% j8 W. B: J0 jask customer [
7 Z+ ]* f! q9 g9 ]' X4 w8 iupdate-local-reputation
' ^7 O! ~0 M$ w3 eset trade-record-current% q; t3 u, x% X* \
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

$ @" R$ X, ?5 K, ?% d1 s3 |8 k2 e- p]. k  \$ r* `5 g# G, N

7 q% `0 G1 c3 e

/ V8 u. i7 p/ R% o1 u, y1 k3 Jset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer  O3 l4 e7 d" p8 Q+ L- m! N+ r
" \: y2 O% w2 l  f
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
( L) g$ N. {* R, [" D& f6 E$ H! r;;
将此次交易的记录加入到customertrade-record-all
7 |* ?& L* b9 a6 Fend" Y0 ?* o3 ^0 C! {
- K& a; {0 g' T9 b
to update-local-reputation& w3 [( @  U1 ?2 M0 b! n
set [trade-record-one-len] of myself length [trade-record-one] of myself" _! n. V* f' d0 e! B6 E$ Y8 g! N
4 {! Q) B! e0 S! C& v
7 m1 ]! u: T4 ~+ n3 {
;;if [trade-record-one-len] of myself > 3

4 z& Q# f; ?, f4 }7 W( Y; f9 ?update-neighbor-total( C: u. E5 I3 g( p' U
;;
更新邻居节点的数目,在此进行0 `$ ?9 h  O& L, Z& n) A
let i 3
8 i$ o, r/ p. k: W- O4 C3 L6 K. Qlet sum-time 0
: t1 n8 B9 z; K1 |/ l. A) m/ Wwhile[i < [trade-record-one-len] of myself]7 [) ~6 W4 H7 P$ P. H. ?1 H
[9 f0 q3 `0 Y* [9 [) u
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
  v$ S1 z4 ?* @- k+ Tset i' O7 G" k& F8 U
( i + 1)

$ ~8 F) v( |- w; k: ^]
4 s: k# g/ s6 @7 g. S3 S' ^" Mlet j 3) n5 ?& I$ Q9 @2 R+ G% ?
let sum-money 01 [1 I  Q/ |% Y' T+ [$ e2 ?! c/ @
while[j < [trade-record-one-len] of myself]/ _. t/ m" K5 ~0 }0 p
[, d* _' ~  N" t9 w- v
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
9 P# F6 V* T/ r7 B. Kset j. @5 ?5 s9 B9 Q( F6 M
( j + 1)

* d8 }) D3 q: N# A]
3 _' C! N9 Q" E, b7 Ylet k 3
( S- G  i. f) q6 m# |4 O; B! Alet power 0
3 R/ z. G8 \' j6 r$ W( u$ T% ]let local 0
' @, P! r6 C: `while [k <[trade-record-one-len] of myself]/ _, B+ w* `$ _3 A6 X
[/ h" W2 g9 B; n+ `* F2 J
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) $ C7 X! o4 C3 {4 Q* v6 M2 G5 `# y, w
set k (k + 1)
3 ^% B# o" c) F+ y! a& g5 X% W+ Q]8 E# x3 V( p4 I+ @0 `4 X
set [local-reputation] of myself (local)
. k+ o5 H4 g& S/ i, z; d( gend
$ T/ N& [9 u" ~7 V/ h2 v: p- V2 W9 U/ e. `3 H2 w, N$ L7 m7 Y
to update-neighbor-total
; Q1 a# y; {/ @* |8 r$ A
. I8 O/ B  }! q3 I8 [$ m2 r% m) ]. wif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
" U: n1 n4 {+ @' e0 B; {: C, X9 P, ]  L) R- }7 ^$ d, \! A1 m4 t$ H% `6 G
" k. t( y( b, `3 H$ P! |: g7 V; V$ T
end# p, @0 i/ l: X/ C" a. y6 v7 H7 T

  V# D: S7 M+ @/ L3 Lto update-credibility-ijl " S( X1 l; s( [& ?. R, p

1 n$ c6 E' O/ M$ G;;
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。( t) t2 Q- M. m& O" P
let l 01 m2 r$ |# }: c, ^; @
while[ l < people ]8 o' R. t  ?& w+ G8 K5 V3 M
;;
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
. X. J, ?: @6 N8 B5 v! \[3 N3 }# H/ a* @/ X7 T: v
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
) l' r2 s; G8 Q9 `# f& p' }7 nif (trade-record-one-j-l-len > 3)
3 k0 Z( q+ E7 f" }" P2 E[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
* f, t# U# O" V( Hlet i 3( V4 g; {& @& {1 S/ D4 G- ?
let sum-time 0
, E! G9 U. c3 i0 ?* Bwhile[i < trade-record-one-len]
; s. F$ \6 x* Q" h[
0 l5 ^2 S  u$ [5 y% m0 ^  W" qset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
; u' E! n! U" ]9 ^5 S" ]% Eset i; K$ O. {% K: [8 D" f' B; z
( i + 1)

3 R% m3 S1 x8 A9 d+ m]$ ~4 \2 A3 l6 T4 k" W
let credibility-i-j-l 0
$ [) J- i5 s; D% `, {9 [;;i
评价(jjl的评价)
) q9 ]) z7 [9 U  p8 Slet j 3* f% M7 h1 ?$ \9 ]& w. d
let k 4& y- |) }$ U( q. t$ [0 `
while[j < trade-record-one-len]! I2 f7 B( {: A" y) D3 W
[# t' b3 B/ ~0 x) d. ^4 ]# U
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3 o: r( A; p% q3 B6 E
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)
% J( P6 P/ `; g4 E/ yset j# u/ ]/ m4 I9 L- X/ e4 m
( j + 1)

( K1 ^4 _8 C! S6 ^. k6 @) Y]
" F+ v, U0 X: ]2 Hset [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 )): f& G  E. }" ?$ C

$ S3 i4 k2 F' _7 W2 A/ h# b% T8 z
& k% x9 L0 G% i9 _  E2 s
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))( N' ]7 S5 y7 [& }7 }0 D$ s2 o/ a( n
;;
及时更新il的评价质量的评价1 I1 ~. @$ ]; F6 I6 E, v
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
7 V7 w1 i8 j2 I: {3 ?3 A# [: Eset l (l + 1)
1 _- q1 z' m9 Z]
  f2 N6 [( X4 O! F1 Kend
; H- `* k1 g& l9 I5 ?
$ `1 x& d4 M% Z% o5 Q: ~; X6 uto update-credibility-list9 M' H3 p8 ?; `+ J# m
let i 0
" U6 Y- V& R# O+ H' rwhile[i < people]
6 G9 z' Q% Q% s/ F( P8 q[+ @" h, k9 V) B  [9 q! E
let j 03 R+ B" U" L) S: s2 F
let note 0
% O  n2 q6 t9 g. z( o2 y5 Dlet k 0
5 |, K! A' J5 z+ d  P;;
计作出过评价的邻居节点的数目$ x0 @4 @5 w, }! c4 e
while[j < people]
. v! J2 v3 u% a3 V4 i  E[
/ D/ r0 m6 G0 n3 p# X& P9 oif (item j( [credibility] of turtle (i + 1)) != -1)
: I0 |- e8 r' |7 S% e! @' E;;
判断是否给本turtle的评价质量做出过评价的节点  J- ^) Q+ J: q4 `
[set note (note + item j ([credibility]of turtle (i + 1)))
7 c  A8 m  [7 W. c; \8 x7 C: s3 K;;*(exp (-(people - 2)))/(people - 2))]

* B$ v1 n* R& S: F4 }- Qset k (k + 1)
! X5 {2 W- B/ U  ~  A' G  W]
. ^) V7 C4 ]* Sset j (j + 1)" P$ z- ^3 b- B8 Q# x, {! l
]0 t) W" V) b$ G2 m& F9 \' L
set note (note *(exp (- (1 / k)))/ k)+ h5 F% n0 @7 P0 A
set credibility-list (replace-item i credibility-list note)
1 I& Z* ^; Q( }0 s) g) ^4 hset i (i + 1)
6 X# p) @: H9 b3 r+ Z1 d% M]
$ l3 j; l  _0 o0 k+ L9 _) [- X7 [& Zend
$ P4 y% c+ [, e
2 O; z) q: q- R8 lto update-global-reputation-list
9 w- p7 u- P- R5 m  T9 ^let j 0
/ F9 _& R1 X3 L* I3 W1 t5 Wwhile[j < people]) E& g- r4 Y1 K$ O. g; V& W
[4 M' X8 u+ }9 F" f
let new 0
/ Z! H! _' e# g/ U. l9 k;;
暂存新的一个全局声誉* T" [+ {$ |  i
let i 0
, A% F( A; x3 D% g/ `8 G3 m& nlet sum-money 09 l# d( N$ a: P& l7 `0 A
let credibility-money 0
3 E+ r* ~, E% K8 _! c6 pwhile [i < people]
/ P# k# r8 I  K& ^- ?6 W2 s3 |[
' e( X$ Q3 H3 g2 P1 Yset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
+ _. V. p" x+ q. ]1 Z$ X& t" Dset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
6 G( g9 ?( v. w! r5 F$ ?$ w0 p- Kset i (i + 1): ?5 O0 F6 \* @1 }  F
]: @% }( X% S/ Y: w4 c
let k 03 H2 U. d5 d1 b1 W$ }2 q8 x; I
let new1 0
6 u3 l2 i+ ^, i6 iwhile [k < people]$ W( o! w# `4 r2 f( X# f
[
1 v* }/ h3 S: B* `4 a/ S7 sset 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)
4 i% F/ }& S; H! x& H7 Tset k (k + 1)
# Q5 \1 b! @( \' j]
9 g$ ^6 `2 Y) e' _; Gset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) & D% t8 n3 J3 C6 W! Y; v& w
set global-reputation-list (replace-item j global-reputation-list new)
( V$ C8 e  }) H8 n; l0 ?set j (j + 1)
. U& M: X; b) H, k7 A]
: L, t2 L+ j* K% Send  y5 E6 L4 |* g* a1 P; G

( \' N( h: p; C: M" ]) k+ M
  l( k7 a2 c3 j* h) m& U
, s! P. C# J0 w. Z6 ato get-color( _7 z4 f) |* C  a1 H. k; O2 ^! ~4 k
: N- Z' E8 u# n
set color blue
: ~* K4 K( V, |0 o/ ?
end
- W2 j7 ~9 z6 @2 f5 G. _' G0 v& R% A4 |& t/ c! z) E9 i
to poll-class+ S* w+ |+ q4 D' p. h! D8 v
end
" K/ f: P' n3 W2 X. a! S0 W
/ }$ u) D9 E6 \  O: D5 Oto setup-plot1: e2 p$ p% Z8 k' Z+ ]; X

% ?2 M: g* A; g6 l5 Z8 H+ rset-current-plot "Trends-of-Local-reputation"
  K6 T, `  J+ k# f/ k, r0 O, K  ~% k
! w" |+ f! I4 W6 r, ?% ~
set-plot-x-range 0 xmax
' d) B4 E) @' B

6 g4 D3 N1 d) I! Yset-plot-y-range 0.0 ymax

* D6 S) Z! L' J% }7 bend
: G" W9 L4 B* N1 m$ J7 M9 d2 A# \* h' K8 k1 ]( \1 U/ o$ x' f
to setup-plot24 [/ n2 C9 b2 y; r# M
7 M# w/ ?4 W! ], `; l
set-current-plot "Trends-of-global-reputation"
& H  K, x( A; N! n  a
  f' i- M; R) v& J# v. f3 |
set-plot-x-range 0 xmax

; o* I7 Q1 o. L) _5 U  O0 j/ H9 ]2 C
set-plot-y-range 0.0 ymax
. E& j: v5 F/ o. n, S
end0 C8 V6 W6 t% s# G/ f
4 A  K) M0 D/ w8 R
to setup-plot3! V0 u, l0 z3 i6 L3 R% f/ t

! L* H- ?7 A4 T, ~, }: a4 U9 x5 Jset-current-plot "Trends-of-credibility"
( q7 ?- L) b+ _* ^. ?% B+ H' o- f% R- e
% r6 p3 L2 e( w/ n; q
set-plot-x-range 0 xmax
; l1 v) ^) T, i3 M% K2 u
5 i/ V/ d7 [( r! ?4 n
set-plot-y-range 0.0 ymax
/ L! B) ]' q2 P  f7 U
end
0 M( ^5 P! N: I3 o9 r0 K$ c2 Q
0 o2 m. x% H5 s2 Dto do-plots
2 x! _% T' }/ p$ Mset-current-plot "Trends-of-Local-reputation"
  ^- n2 F8 Q$ v) o1 V! xset-current-plot-pen "Honest service", x4 o$ A1 x$ Z
end2 F/ h9 [$ L. C* @
6 i5 L: [$ ~0 L  X2 r5 O
[ 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.7 a1 t. F2 Y2 D/ W) Q2 r# \1 _# [% L, `

4 {- s5 z1 {% @1 H  w! {$ 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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