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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/ W8 a8 @; ]3 a/ ~) X. b
to do-business
" n& H8 v( k5 |) G5 @: B6 {( G rt random 3609 S/ |, y; A2 u8 \7 ]( m
fd 12 O' C- S$ X1 g+ x
ifelse(other turtles-here != nobody)[2 x$ Q' J! _  i/ Z2 Z' R
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
0 ~; q) ^! ~- c# m$ u, b# J   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
! Y) ]) h& c$ w$ j! {5 Z) \. F   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
+ o% u$ H% j5 B& a4 ]' e) o   set [trade-record-one-len] of self length [trade-record-one] of self
4 p; [8 u, P3 R( Q   set trade-record-current( list (timer) (random money-upper-limit))
) @6 z$ u- D) v- G; b5 {' m
( O) `# Z" s6 ]$ F6 T2 u3 [问题的提示如下:; Q2 w2 [6 b- {  S4 J8 w+ M  m0 T

# ^+ k2 y: I; `0 aerror while turtle 50 running OF in procedure DO-BUSINESS
# W/ j, A! c6 F6 Q5 R  called by procedure GO
' R3 U: g. g9 K, \. M+ m' eOF expected input to be a turtle agentset or turtle but got NOBODY instead.
/ \) d, j4 ?8 }- Z* k0 f( W
(halted running of go)' U& m4 O7 m1 a$ o
; N: c$ C' ~# ^6 b, N
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~~% @; g9 C- B% Y& B; `0 q, Q5 @
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' K4 y9 o! S3 t
globals[. e$ t( ]6 f# o9 Q+ |
xmax7 S7 \4 N9 `0 F7 ^6 _
ymax
2 i: C% D& G& Y; iglobal-reputation-list+ m( n7 q2 R8 n7 E8 v
9 Z6 r) x. H5 y, I! P! P
;;
每一个turtle的全局声誉都存在此LIST
  [* \! f9 O. ycredibility-list
7 @: b% n+ F! k;;
每一个turtle的评价可信度
: a) v* l" D5 M0 A" Vhonest-service: h$ C8 G" ]/ a- l! p7 d
unhonest-service
4 H$ v! v  W, R& Q0 p6 l' Loscillation! w2 x1 w* {# m5 S& T
rand-dynamic
" Z* C5 V5 [  }) d, B]
- O% J! `. B& l/ D4 h- m: G7 s7 f& E$ _
turtles-own[
' q/ b* Y) B/ L+ C: f% G3 }1 ~/ itrade-record-all
8 Q6 g- i; K& z. y9 ^; J) V;;a list of lists,
trade-record-one组成: c* e6 H6 q7 a7 S8 r0 b
trade-record-one1 o' ?$ U& k5 e" g# H8 x1 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' Y( f, X# G* ?- [! ~3 O
  B$ ?9 f3 S" q
;;[
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]]
9 |! y' d5 `7 Q) A0 Wtrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]6 ^" l; X5 |" W% A
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/ ]& ?9 E8 [. L. |# N
neighbor-total, |* x4 u% P4 }; }0 G( c" J! G3 _
;;
记录该turtle的邻居节点的数目2 U  s- d' v' P- v* ?7 f3 J1 [
trade-time# R0 [3 J7 Y1 d8 B
;;
当前发生交易的turtle的交易时间
8 O+ p% B7 e( Jappraise-give
! T& v% a. O4 _- Q- o) q9 };;
当前发生交易时给出的评价! s! `# r+ y7 y: R* G  r
appraise-receive
( K- @# |5 q# ]" O;;
当前发生交易时收到的评价
# F6 P: P& [" |9 N: Kappraise-time
) w9 D' L( x' w3 Y$ @;;
当前发生交易时的评价时间* ~+ k; |7 n; {$ _
local-reputation-now;;此次交易后相对于对方turtle的局部声誉, }# d& m, \* _, C7 i% D% h
trade-times-total
4 w, {* v8 W- [% A( [% {/ w& G6 q;;
与当前turtle的交易总次数
" `% p" Q& b' l/ r, }trade-money-total8 N! H) _( A% ], _
;;
与当前turtle的交易总金额
  u2 |. k+ z* ~7 _3 x0 ^: Q5 Wlocal-reputation+ O8 [# F$ P. l+ M
global-reputation
5 |& `7 O5 F. J- k3 e" c( g/ Icredibility$ @) F# R' p& G, c; `/ L" p2 F
;;
评价可信度,每次交易后都需要更新3 o4 W2 w' g7 s
credibility-all8 B' ?7 G8 W$ g, g& j; C& @  R' T
;;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
$ Y7 m/ J0 J2 ^5 ~- Q  Q
# q3 P  k4 y: p2 d. a( r& F+ L;;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
4 w6 I; p% \8 rcredibility-one7 }' ^, T' d) G
;;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
5 R* I9 N1 `0 {% `8 L( Xglobal-proportion) n7 ~" ~6 t% p$ Z- ^
customer: E% V$ o( P' h* V
customer-no, ]9 L% \9 T/ I9 ^% ]2 C- E8 F
trust-ok- {7 ?. t' i% N, D
trade-record-one-len;;trade-record-one的长度! E' |9 m7 C6 e9 |
]
1 y( U& C' L8 f  |, A' a1 l" V) F
( i3 C+ B9 E& v: n;;setup procedure3 M) N4 ^7 `. C" ~( M5 a
( r- T8 X6 E$ g; I. b: b
to setup
7 j2 F9 I. g+ ~2 e
9 m$ M2 z1 ~/ a  F. l# eca

7 k* J) v( x$ u' G9 T4 ~& y
6 F# u. @5 ~: G; finitialize-settings
1 A# q) o/ m1 W: ?0 V. i( C1 H
8 m: P  D/ @; y- A& n( m7 g$ c
crt people [setup-turtles]

) d: X( d6 ?# g" `' k: J
4 }$ v( K& K4 C$ `reset-timer
9 |: Q4 q& [  o

) K# O* E( t" n$ l$ Dpoll-class

: X/ U% ?7 T1 q( O* O- v( ^$ k( Y* h! U4 f+ x) o
setup-plots
* X1 i+ w# E1 b2 T9 W
7 h& {% \$ s' z" y  q+ J
do-plots
0 y9 N) K2 _% t6 Z  c: s. C
end5 U% }- [* K3 ~8 G2 p4 F

5 g1 P' L" R; M% i3 Y: ~3 ^/ Ato initialize-settings* K) u" N8 k6 l) Q7 j: G' \

# d  S/ h" s$ x; Y5 U, \set global-reputation-list []
) m) ?6 {* v. ]0 g, z

& r3 Z4 m" @* H4 Q; A8 o: [set credibility-list n-values people [0.5]
5 m' u9 {0 _7 x# A! S

3 C7 y2 i% w4 ]set honest-service 0

- d) s; K# _. q% ^( D  v/ h4 X! q1 o9 `7 H2 }, c
set unhonest-service 0

' t. [; y: T$ b6 L
( U1 ^' G0 }) l4 f# Hset oscillation 0
2 Y+ K2 F0 C. ]; t) B  [

% ]; k0 [$ _) h# T- @9 _  {set rand-dynamic 0

5 K3 Q: A) r; Gend2 ~* L/ ^3 \: x8 p7 b! ~. F

. @4 k5 s* g* g% s$ v2 Rto setup-turtles - a0 I  [. L$ l1 i, B9 h
set shape "person"8 D- [( b0 X, h+ T% k3 q+ E: w
setxy random-xcor random-ycor2 m7 r! R3 l+ [$ y, R2 z. B1 ]0 h4 ]
set trade-record-one []
# s( a$ m8 z  K8 i  z2 V
: e7 @* T, p: V- S' W& w
set trade-record-all n-values people [(list (? + 1) 0 0)]
8 U. K3 L2 V2 ]5 U) |: I

. ~1 [8 w+ g6 Z& Q( Z8 Hset trade-record-current []+ n4 b, n- f0 M
set credibility-receive []
# \& ~1 S& u) `. \& ?, G7 [$ c# kset local-reputation 0.5. A: U* N. ^+ _  Z' U, H
set neighbor-total 0
8 H/ Y$ V( R; u8 m; ^set trade-times-total 0/ i! {& x+ a# S7 e
set trade-money-total 0
2 i: d7 Y* F* q$ s0 Mset customer nobody* ]6 Z; i5 _( G* l) D- m- }5 P  C
set credibility-all n-values people [creat-credibility]8 z+ Z7 o: ?3 F4 b
set credibility n-values people [-1]
) o0 D( Z" i/ D& Tget-color( r; W* [/ S& R9 C; g2 F
' ^- o! |7 f, ]" n% A" M* U
end+ \' i' x2 a$ e) Y* ]
4 A# O* Z. e/ C, R' `4 g! j
to-report creat-credibility/ V6 B4 K9 Q" k; Z" }/ r; W
report n-values people [0.5]( `% P( |) v$ C& B- E# {
end$ [' G& Y. k3 w$ S7 p" {$ W
0 {8 N; [7 i/ N: u
to setup-plots5 ^  I# [  _5 X5 Y; I
/ b" s) I7 l2 \4 \$ J
set xmax 30
& ?) N; H: W: @" L6 I
) Z4 s- X3 Q! T5 A7 b) M
set ymax 1.0

5 A# L3 f0 q3 N* W+ H/ S$ g2 ?4 @2 w) Y) l. }! m1 \7 L- T; p
clear-all-plots

' t+ F4 [3 b6 B  D7 ?3 h; s: R, S! \& g
setup-plot1
& m: ]  x, b2 A( s
$ ]  D; a; @6 d! D4 Z- X  o7 j
setup-plot2

, x' \6 U$ C5 N1 d1 w6 ~# b, M/ W5 L1 q9 J! d9 x- I) i7 c
setup-plot3
( {3 Q% h1 m5 U& d2 @* g# q
end
" F3 Y" C- h; s& E& n9 E) n+ Q( i9 [$ w
;;run time procedures8 M: O9 B/ F% _$ t. _) {
- f: w6 G4 s- F' q
to go
' ~/ y4 j3 }. S! L% ^( K+ n3 v/ P8 c3 p1 V
ask turtles [do-business]
$ G% \1 X2 s  v. U, Z
end
% o& w8 C/ M6 K( |2 f. W0 o9 F3 n1 w! ~" ?+ W/ @$ b  H; ]
to do-business
( m& x4 V" [/ I- U# E, U) C. B

- s8 S# z2 Z) a3 g5 E9 C( R. w/ r) A3 p3 \9 F
rt random 360

# [! Y' L( |% a* i" M. w. q+ p
0 Y7 j# |& s0 j4 Wfd 1
& N# @6 z# ~) d( W) ]( V; ?
( q1 Z- U7 J0 `% T
ifelse(other turtles-here != nobody)[
& e. M. u  {7 B

# B3 ^: i) V4 v% u7 m0 Jset customer one-of other turtles-here

3 t3 g& e' j0 D: N& J
4 m: w" n0 f& I" N% M;; set [customer] of customer myself

5 z7 b2 g6 E  c3 {# a
5 Q4 r2 W3 J9 uset [trade-record-one] of self item (([who] of customer) - 1)
% C$ {+ ~1 `% f/ k[trade-record-all]of self: G. \! H( _7 X
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

! x- b: G( N+ A* Z* g  p) P
8 f2 t4 l/ m" e7 W: d" jset [trade-record-one] of customer item (([who] of self) - 1)
. J) C* R: g! R/ A[trade-record-all]of customer

0 V" \+ A7 }: u1 Y" {5 n7 y
3 L  P/ N- k: y# n* W: u% {set [trade-record-one-len] of self length [trade-record-one] of self

+ x" d% a& v$ @
* Y$ z' d$ Q3 e4 ]set trade-record-current( list (timer) (random money-upper-limit))
. v( x: \8 |  F' p4 j

9 l. K# W, U: Wask self [do-trust]
/ G* t* Z2 N$ z2 E+ `;;
先求ij的信任度
7 Q7 p+ j+ _% e# Q( L9 w" T  `$ d" o- ^3 |7 n9 U
if ([trust-ok] of self)0 ]: g" A1 N! X- {
;;
根据ij的信任度来决定是否与j进行交易[
: o3 ~1 s! c# ~ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself3 d+ \! G( ?9 q% z# J

. |3 \) i! s7 Y3 j5 v- N[
) H3 ]* K" u, ]* E" U
! B7 ]. P! Q. Z5 y
do-trade

! A, h: [0 m2 E7 z% y4 b
" N# ]- L, L; c8 {: ]  B  bupdate-credibility-ijl
1 u7 ?# e* T6 P7 y" ]9 T( i

# v7 `: p# J; r/ j7 m2 Wupdate-credibility-list
/ `8 g' J  `, Q5 K# [* a

9 h1 H7 W6 A' L8 \( z
5 e3 O3 M3 R7 l" w/ \update-global-reputation-list

4 _. x  L& O6 p( k" |
& {4 U" m0 H5 @3 _' t+ K% X  c  |; jpoll-class
0 ^0 V* r2 b, _* y* m) O. S

' i0 a; N/ k# Z" h" Q. f7 Sget-color
$ @% ~2 l- F! Z) W; M

& p8 d# u7 x( e: d. M" c]]
0 v+ F+ K. f6 i9 n: ~/ j% E: F& g
# T4 G! G: G+ a;;
如果所得的信任度满足条件,则进行交易. ~) V  B) C6 e2 I+ R3 l( A

( D2 r1 H) f$ R[
) @' d8 x; \( h5 g" x% [) [+ C7 J" x" ~
2 k: j" ]1 W! }7 @; M6 N7 T
rt random 360

' v, }$ @# Q0 @1 b( t7 g
0 z& n3 {5 v  y* e/ E4 tfd 1

3 Y8 r# W0 C, O% P" z9 v# Y
7 L2 f  p% m' P]

. n  Q6 T( q, ~2 _- c( p' Y; h6 k* y( |. b  C
end

2 H( n# D7 X) d+ J' f0 r. l) ]! j) L
to do-trust   P) \8 L0 C7 g
set trust-ok False
) e0 j9 {- d  ^1 z2 D
3 c6 w# I6 `; R4 p, z

# u5 [8 \  e) m3 s1 Alet max-trade-times 0
/ A4 Q3 u: S! o5 |. o$ Mforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]3 F+ b4 n5 G0 V0 d" i- v
let max-trade-money 0
8 k' w% U- \9 T, Iforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
7 ^, @% K. D* o* c! J+ x+ Tlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))4 o; C5 k1 I+ n' I! T0 ~( B

4 Q  A! C2 w" B0 u. S. |1 o; T

7 O* P* N4 K2 {! M1 j  W/ t/ E' gget-global-proportion) Y1 }( n5 [4 y) @; ~
let trust-value9 I. u2 M0 u) z& V" W
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)

! F8 G8 x7 v* |if(trust-value > trade-trust-value), W( R3 v( L+ R( a' X  a, o
[set trust-ok true]
& H, u( H# G+ jend6 o" O% r9 @2 j1 [' h) }  W  B

/ h, L" K2 h1 `$ Pto get-global-proportion. s: u6 s  G! q7 \4 s7 d+ c! J
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
) h* H1 q; t- y  e- @- k' O: ?[set global-proportion 0]. |3 Q0 A" d4 E4 R
[let i 0
/ t, w' }3 x3 g+ x5 [# Blet sum-money 0. M1 k( ^, s/ x* _% F) T# v
while[ i < people]7 Z' `! c; E; i3 ~4 s4 R! P+ E2 H
[
1 ?2 P/ o( ~& P/ r2 L- g2 ]if( length (item i' ^; G2 c# K7 z8 L0 T9 C4 O& p
[trade-record-all] of customer) > 3 )
# }  t. c! h& d# S# o
[
. r* q  f  a+ @+ v( z' @set sum-money (sum-money + item 2(item i [trade-record-all] of myself))9 y6 r6 \6 U% p1 r0 v9 D* N2 {
]
0 {0 a8 X2 [# D, z]5 e; _2 \( O7 l& D: u3 F
let j 01 V, w" }& _) |4 v- g
let note 0! }8 |$ R0 N5 x
while[ j < people]1 A0 ]8 L) \- g; v* q! U+ s
[
% S: v8 X; n# p1 u& E- S, B1 uif( length (item i$ c0 h, f' ^, T$ Q/ E" u
[trade-record-all] of customer) > 3 )

, p% d; x: S6 |( J[  M* Z& X: R% f7 l  Q; j, q
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)8 R% k! e0 A) a) @
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
( ]4 ]1 H& `6 Q  o4 \5 x% D- o[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]! R; N* ~/ e/ C& P
]: ^2 Q8 a" {% o: S4 L) `! v
]9 l$ Z+ G' z; D0 w) i
set global-proportion note
% b6 Q  \$ M4 a5 N]/ w, H$ |  V4 T  j1 e' g
end
; {( l6 c- O7 D4 f( R" z7 x0 l  f
6 J: `- t* s" J7 Lto do-trade
  u0 T" r6 l& c4 b# h2 W;;
这个过程实际上是给双方作出评价的过程
: Z3 M% E8 l( Mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价0 D/ r$ Z1 A4 a1 p5 O% ]
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
/ f8 K- p1 o" W$ \- o, v) r; ^1 X0 iset trade-record-current lput(timer) trade-record-current
0 F; u  L0 e$ w) n5 _;;
评价时间3 G4 V, i8 L) v. @7 y9 G3 {# s
ask myself [$ ?. B: F4 A7 L. o. O4 a
update-local-reputation
& {9 m1 b" f" P  x- sset trade-record-current lput([local-reputation] of myself) trade-record-current: T% X7 l/ T. [* ~4 o% a; }6 e
]' ?, m! h6 b; G
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself2 h: V4 H3 c* e  Z" D  R
;;
将此次交易的记录加入到trade-record-one
  X$ P- y% z( n8 c% _$ ~: Bset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
) A  z) y! n# @# tlet note (item 2 trade-record-current ). O! Z& f; {8 A! z
set trade-record-current; o2 n# x/ R3 H3 X, _- M$ S
(replace-item 2 trade-record-current (item 3 trade-record-current))
! W3 _6 O: W  s2 {+ r3 B# u
set trade-record-current2 R4 R' G) S1 q1 T) x, y! l
(replace-item 3 trade-record-current note)
- }$ G+ k! C7 I0 Z4 w9 H4 T: |% {5 ]# b" i

$ `( b# s' G! U5 h- {" eask customer [6 B* M) o1 p  g# |8 M
update-local-reputation
# R3 B7 F# l4 D. }: ?5 aset trade-record-current' |: x6 u5 J2 P& S* H" ~
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
! L) _  p0 a: r# ~0 j1 Y1 P
]7 [7 Q. F1 t& B& c( s

, q/ D2 K0 _# |5 r4 N( r( p, I
' k' o3 X5 [4 ]9 W
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer( ~" f) T+ G7 }- K6 q3 r
/ `' J# A3 F( r6 p' r$ j8 m
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
6 z4 n7 z* S0 O;;
将此次交易的记录加入到customertrade-record-all0 L' v! A: [) K+ _8 x
end  _0 ?6 p/ a" F
$ }9 k  ?+ [+ |5 o, a
to update-local-reputation( }, j. \: h. K! m" y% `* s4 y
set [trade-record-one-len] of myself length [trade-record-one] of myself! O. L. k3 Q+ {6 N- _+ j9 {

- F! E  F; Y/ F6 M4 i! l+ X, Y- m8 n! w8 Z* T
;;if [trade-record-one-len] of myself > 3

- P+ {& D, f8 z0 }# k$ D! C* pupdate-neighbor-total
$ [5 O5 Q' @6 A# H/ c;;
更新邻居节点的数目,在此进行
/ G$ [# L; i' z. X5 m. t% Olet i 3
% o  W" {2 m! S' wlet sum-time 0
* R! g) y2 W5 Q. Uwhile[i < [trade-record-one-len] of myself]/ c- X& b/ `. M/ v+ c1 X& y
[
  l! t" d' z' W. y+ \2 R% ]! zset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
7 ]0 u; u1 C' \% [. ?, fset i
, K7 `8 T2 X! V* R+ G) j9 \4 B( i + 1)
" i5 u: I5 m4 e4 p4 I! J$ r" w
]8 U$ Q) s& P8 b/ f9 Q, O
let j 3
, k8 q# h' u+ Glet sum-money 0
# C  W$ ?0 [' q3 jwhile[j < [trade-record-one-len] of myself]
* r& q& Y1 ?; ~" W[
7 e6 ^6 |+ ~( ~! g- R) Nset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)- [$ C+ b5 G- Q
set j
% S0 N4 h5 K& |: \2 F( j + 1)

% Y9 H- z( y  K0 h$ @! _]9 @; {& R& u- l5 P" ~- ?( b
let k 3
  Z! u9 k/ V- b" ulet power 0
- |. ~# j% t( j( _0 Llet local 04 i9 S( M3 n' p1 o
while [k <[trade-record-one-len] of myself]
9 a" V$ i6 P% {" V1 h[4 o. v* k$ q; Z8 O0 x3 Y1 d
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)
3 W! U% i2 W6 A. g% [- M9 O5 ^2 j3 Vset k (k + 1)% v4 c# g" t/ _2 r* ]
]: H, M1 U9 S6 U1 s4 S
set [local-reputation] of myself (local)
& e! n3 D' f2 h) w; Q$ b/ rend
7 G5 z% u+ e% F2 ?- H' v6 _2 L. I8 Z' `2 |; \( ]
to update-neighbor-total$ E* Q" A$ y. Q# p

' S/ G' j2 a- j! z. gif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
+ L, a" M: \# D9 K9 K" L) X" n4 ?6 v; L9 R" L3 F
. T5 w( A2 X# G# q6 W. E* v
end; \% t" i9 g/ D, A

( u3 s+ @1 m, jto update-credibility-ijl ) a) e: x1 m; M6 N( H+ H
- u" z1 _$ M" W
;;
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。
3 f% ~/ `/ ?1 T# \/ @let l 0
. }. B5 W, ]! e- m) w; |% }3 ^while[ l < people ]
9 a+ W% q/ r5 e& N  ~;;
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: b! K, Q# R: q1 X
[8 }* O" r7 p; v8 v2 c9 {  T: Q
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
8 v7 {- H0 ?/ j$ i2 Y" o) Eif (trade-record-one-j-l-len > 3)
1 |% v8 ]8 f* H5 y( c[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, I; }- B5 y( G3 |! F
let i 3
1 G# Y9 ~: c. A1 c! F. }4 jlet sum-time 0' Y6 R- K: }+ C. i- o  k
while[i < trade-record-one-len]0 @5 d# S( x0 v9 y7 I" A
[
( F* Q4 W- c8 X4 l- J4 P+ e4 ]set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ), i( R' C) _4 M; f
set i
- s  [: G2 R8 X. p" }( i + 1)
8 I: U0 y3 f" |. L& S. K
]) S! c/ ~9 K! S2 C/ u
let credibility-i-j-l 0
9 A, x0 A2 k- N;;i
评价(jjl的评价)
+ |8 W7 l# w& z9 e' clet j 3
8 n% W6 a+ T0 V$ a9 {let k 4
0 w$ w4 @0 b6 o/ F! ^2 {  s& O# I5 Jwhile[j < trade-record-one-len]- T' b- R: K7 N/ u  n5 h6 w
[
0 P; l( |) X! y. G" C7 R2 `5 ywhile [((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: R; F7 o" D9 {; [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)9 D0 W3 Y0 X5 C
set j: x/ D' ^- F' }# i: \0 ?
( j + 1)
% ~4 F, }5 c# z! ^! C" W
]
1 @7 t. O. I$ P- wset [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 ))
6 l0 Q2 L6 y6 Z
2 W( p( B* E8 q& u% r9 {1 Y
+ _/ ]9 @: }7 E) v
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
3 Q8 q4 v+ A4 U( v4 Q;;
及时更新il的评价质量的评价+ @/ @4 T  U5 w0 I2 g! K7 x
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
7 t' |9 B* v# R8 A3 |: fset l (l + 1)
7 m2 N. Z% ?  h/ t/ T! w]5 M8 e# `0 v$ O* I" ?% a
end/ c- h! q. A9 d5 e/ c3 H2 d
5 ?8 ^6 [2 O' A
to update-credibility-list
* l1 c3 n8 ^0 M3 D" N% X# e9 Hlet i 0
" |* U+ y! r5 s. L* bwhile[i < people]: ]' n/ q1 B& \4 v
[
/ p* Z( ^4 X" flet j 0
0 G7 a( m7 n  E- M  Plet note 0
7 b* A& J& P+ C9 [; rlet k 03 R2 I2 _% s& f  X) {6 T0 S9 w
;;
计作出过评价的邻居节点的数目
) f- [+ k# q$ K# w2 I# M  Ywhile[j < people]
2 i3 \2 m9 Z7 G# R1 [, U2 F[
! ]1 t9 k5 C0 b0 O0 Cif (item j( [credibility] of turtle (i + 1)) != -1), n# @" Q1 D$ ]# b- z2 C
;;
判断是否给本turtle的评价质量做出过评价的节点+ j; B' L: s. R6 C
[set note (note + item j ([credibility]of turtle (i + 1)))) l9 y8 m& A1 m, U$ J
;;*(exp (-(people - 2)))/(people - 2))]
2 F: P- w: a  V2 [. K
set k (k + 1)
3 p8 p: Q9 X8 x: U' N( F]
; a/ \& {9 Z( |# _  {: ?9 nset j (j + 1)" e7 Q; s4 u6 W3 L
]
% q4 V. W, ^1 Hset note (note *(exp (- (1 / k)))/ k)
8 Q* o' h8 e) I5 B3 n% ~1 |, y3 Zset credibility-list (replace-item i credibility-list note)  H* o0 q! n# m- b, Y* }
set i (i + 1)* q7 {; w. T0 |9 r# a8 k
]
* B+ o, h2 q0 ]4 @# d- Q0 eend
& s& b3 F0 x0 {- [; a# M4 O
% T' g' o5 }" y) yto update-global-reputation-list
9 E$ `3 P2 @, F2 v7 |; ]$ P+ Glet j 0
* b9 Y9 h' C0 x) c! z; C' O! Rwhile[j < people]
5 t: k% ^8 G* i2 @* l[" ]; M" e8 x) @# R
let new 0
% m# [# n/ M/ W6 t6 S;;
暂存新的一个全局声誉
+ M$ W6 |; ^9 H4 V$ Hlet i 0# D$ S0 I5 i5 U! l- K0 y, l
let sum-money 0
" V  P0 K0 }: v; a7 wlet credibility-money 0( V5 c2 {, `! S4 n3 a
while [i < people]$ Z: m% `+ p) p7 a& C/ U& v# b- h
[  e; H$ b8 ^1 b" d8 `
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
- p8 c7 T- q/ Z' G/ u& R9 rset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))( w! w' E7 A( D) Y! J
set i (i + 1)) u+ l' [& V, ?$ w
]
" a2 Q5 N6 H' h; m) b# j1 zlet k 0, Z) y) G  o. Z% n; [
let new1 0
( U: F1 ^7 o8 f9 B/ o5 Awhile [k < people]# i  z# M8 r" Q2 s  q+ a
[
& p1 p/ x$ `5 q( d" A' h# k! Oset 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)7 P4 [- o+ T& x" j
set k (k + 1)9 ^8 ^6 K6 Y" p  W/ M% c
]
6 X& d1 T% C( d2 [5 Pset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) : k# N. m5 E2 k7 A2 l
set global-reputation-list (replace-item j global-reputation-list new)
- b1 [& _8 T# g, Y9 m3 b( P: W, Bset j (j + 1)! G( q/ G/ T7 }; i
]
0 J$ T, D" ~+ i4 J, A7 Z* T) V: s( b% ?1 Gend
$ Q! C& g4 ^' _& R+ w2 G2 o' J% d+ @# C% }4 t
6 C, Y/ M% ^) m% {8 [
8 @# e6 A( d* J: ]  `- }, A
to get-color
+ c6 q' f9 J! x- P9 k% g4 Z5 C) ?3 F0 C! V5 B; S8 ^
set color blue
$ _" X6 C5 C2 c4 o$ G! ~: k
end1 A8 Y# \, @/ i4 Z* T4 F) z  L

% f7 T0 N8 C8 q! j! f0 ito poll-class
% t5 p6 E4 U6 K6 m, Eend
8 J( ~( f' z2 H6 s& N% y4 p
$ o% ~" D3 S5 u* E7 [/ Z. Hto setup-plot1
* d( s( w0 e& c* A" Y' ^2 G0 n/ p# m
set-current-plot "Trends-of-Local-reputation"

& Y6 Y2 P+ S; I; j2 Q$ N5 ~1 f1 O# k9 n% h$ x& t9 ]
set-plot-x-range 0 xmax
/ r# p+ ^& ^& M  D: A

9 [* P. S+ _5 z$ ~% ?" l: f; Nset-plot-y-range 0.0 ymax
4 i- d8 b" K, e0 j
end
: ~6 Y' s$ L/ j5 E, s4 x/ V- [; g
8 M: W& I- x/ p0 \8 ]7 Yto setup-plot2
2 P# d- E' P& Y% Y  x/ F
& ?9 F0 a: m1 Q0 wset-current-plot "Trends-of-global-reputation"

$ l; }( v; k5 V1 |& ]1 L8 k6 B, [/ s9 M& w9 _$ z* E& u" O
set-plot-x-range 0 xmax

2 t$ P7 H- E# I* F* c
! w/ y9 W  U  D" Xset-plot-y-range 0.0 ymax

' x6 ]" g0 ~6 w6 |% N' Mend
( |( P* n3 s/ b! g3 u# b
5 e" j1 C) S) ]/ wto setup-plot3
& L% _0 q/ W1 t) r) S" z
+ V  z( F4 j5 {! R" ~8 \set-current-plot "Trends-of-credibility"
: g4 ^% W6 s# s& N* |

( Y( `! t' o  i. E' Iset-plot-x-range 0 xmax
% X5 ^, N8 E5 R7 ~  y8 `; S6 Q

0 n, L4 h) C# Z$ i, O) `3 O' j# nset-plot-y-range 0.0 ymax

$ U' L3 c8 X6 e" Q0 xend
9 V1 `2 @- P- {; E+ T6 I, D8 Y% [9 X4 U7 _& B' l) d  e7 u
to do-plots, j5 c8 w5 j2 x2 f* ^
set-current-plot "Trends-of-Local-reputation"2 t) k8 x. {! N% u% Y& J$ V
set-current-plot-pen "Honest service"5 d- C; p% A2 r1 ^& V  B; a& z
end& s$ U3 d  N# l9 b7 K& c; [

  I: i6 f# z+ z[ 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.
# s* p0 F; x6 ?2 J
& ~, A0 X+ a& O; m" s2 u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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