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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:  h5 j( {: Z" x% @
to do-business ' V7 a6 {. f/ B2 R# n
rt random 360
6 j  e  _( Y: g8 l6 P5 B7 t( ] fd 17 g4 ]$ `5 m* K. `! r& a9 [6 i: _
ifelse(other turtles-here != nobody)[
1 j" G8 L0 c  W5 @0 G5 i   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.
  h  Q3 x& v$ T7 V   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
5 I/ r/ j$ L* h  ^   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 V7 M# {$ b! ?& e! d
   set [trade-record-one-len] of self length [trade-record-one] of self
- `$ N- Y6 s1 W3 k   set trade-record-current( list (timer) (random money-upper-limit))
  e, T3 L3 v8 ]$ w* ?7 g: H0 V- c/ s! J: r, `
问题的提示如下:
* B1 m- H# v9 |2 q+ k+ @
- s1 O7 e- A+ M& q" E& S7 [; xerror while turtle 50 running OF in procedure DO-BUSINESS: w9 v4 P( ~6 K' {: H
  called by procedure GO
" l; {! _. b! y- X/ @6 W6 w+ YOF expected input to be a turtle agentset or turtle but got NOBODY instead.
2 N* k  w' K( E4 w( t, G
(halted running of go)* `- M7 t* }) `. H+ P: F% S

  c- u4 _' ~$ C/ J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~~: i; I* h8 \" x8 _2 p6 ^+ ?
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. i' T# a6 sglobals[- P. k: Q5 s6 C- ]# y' N! r( ]
xmax& P0 T: p$ b6 r: Q; A2 w/ W$ i
ymax
  O/ D# N) V$ z% Z# Y; Rglobal-reputation-list( O2 M8 b  j6 p
# }+ W8 P( }9 e. s
;;
每一个turtle的全局声誉都存在此LIST
* Z/ r0 m( E6 ^' x3 Y1 pcredibility-list
6 [! B# V+ m  G4 P( O& o& `;;
每一个turtle的评价可信度4 ^# s! Q$ c/ b# @  j" K4 o
honest-service
9 x$ P* v% [2 s2 dunhonest-service- R( q. |0 d( x5 {# C6 B$ V
oscillation
6 ^. @9 \* x& M* b4 f# e% Jrand-dynamic  e2 M0 P9 ?9 p; N$ M, Z/ I6 A
]
- ~: Y9 B; y; g# [, l3 F' J
2 [% k; w* U2 n* L- m! i3 ~turtles-own[
: d8 _6 k; U! g; j9 {' Ltrade-record-all
* h$ ?' }" C8 W8 {/ B( H7 q7 `% Q5 I; H7 k( t;;a list of lists,
trade-record-one组成9 {( l4 t; R2 W. r
trade-record-one
  H) B& J3 W0 L* n5 y1 Z' R& t; h;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
) W' D) g9 W: s7 ?* J! Z
; M4 _* K* A; \$ V; l* m;;[
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]]- ^0 \9 }# q+ n7 K6 T9 c+ Z
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]
# D( \/ V. |) O. M; xcredibility-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: E4 m7 S! `- L% V, L/ B
neighbor-total
( @2 B! o# N! A0 u0 V;;
记录该turtle的邻居节点的数目/ b* d6 W# z1 b0 O9 M& L
trade-time
' V5 f7 B" Q' k# d* u: Z;;
当前发生交易的turtle的交易时间
! _, _, Z3 D, I" h3 h& mappraise-give5 T0 O; r1 T  i5 @
;;
当前发生交易时给出的评价5 _4 ^2 ~0 M' h, r9 L% X- ?
appraise-receive; A2 Y" q% {' O$ d0 f
;;
当前发生交易时收到的评价# [4 E  c. f! K! z' {9 p
appraise-time" y' y6 t! M- }& b
;;
当前发生交易时的评价时间
4 S. q+ Z' n; O0 y- W& a: N/ b; Klocal-reputation-now;;此次交易后相对于对方turtle的局部声誉1 R4 s- R: k$ j$ M- \, i/ @, {
trade-times-total+ S+ R6 n  Z0 q' @7 M1 i
;;
与当前turtle的交易总次数
5 s. y2 Y% z$ c  d" {. B' F1 {% O/ ltrade-money-total& _8 [' F. Z  u, d( b& ~
;;
与当前turtle的交易总金额9 Z' q, f8 y/ T: D- j% d9 }
local-reputation
) X/ J" ^. Y$ W. h% dglobal-reputation- r6 f7 _: I. E% V
credibility
: R  p& m, i, S% r, }; ?4 Z;;
评价可信度,每次交易后都需要更新: }. m5 E3 q$ J6 v4 v5 z/ n
credibility-all2 `* j3 I9 `( _
;;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 K9 b/ [1 i! j9 l4 s5 k

9 r% M/ R- U' Q;;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
6 Y8 H; ~/ K( I  r$ l/ U0 d- O2 ^credibility-one9 f/ N4 [# ?# ^' W' Y2 L
;;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people1 o0 j4 d/ P: m: h: z& G* e
global-proportion/ u3 r- H  e" Y1 Q3 b' r
customer1 ]7 }5 N/ q( k3 c7 c
customer-no  s. v3 H7 g  ~
trust-ok
4 ~( h; T2 M0 l! e7 e# ttrade-record-one-len;;trade-record-one的长度
5 m' \# J" e7 c3 G: ?5 \]. B  f7 M0 T) N1 @. p8 N$ ]

9 X, E, s4 N4 T5 o- a/ `0 a;;setup procedure+ I' F6 ^. A6 ]. i. |2 o

% ?+ g# R, N; [$ _2 ?5 a. |- w: f% Fto setup
- c; C* a5 h5 t- ?: ~8 \% V* y, R3 }0 V1 f. e1 }* c3 x
ca

$ o$ W6 ^3 R# ]  `/ r6 A! D# N: f7 d1 H
initialize-settings
, N8 I5 e0 _/ n2 l9 k* Z

* R* g, d6 C/ w- h/ {; t$ Ccrt people [setup-turtles]

, g, Z, g5 J4 ~' O7 W/ l! u, r  V! O
" e4 l0 l. Y8 |; C- dreset-timer

% N3 J: `7 }' n8 {2 R+ n' Z2 Z' {! R8 ~: c- s
poll-class
  u4 d9 Y1 }+ _

. g4 u2 ]6 T5 z7 A# T) Asetup-plots

$ o* L# n7 H$ y0 P$ e% V. B/ v7 r4 n" B
do-plots
" b) |7 {: G' V
end# p+ P+ U- ^! _; @0 h( ^

4 ?  `1 O3 U! j' p# @5 z' Y% Hto initialize-settings( R: ?, f+ O$ t3 C8 }$ E9 f
: \2 Q% y! B5 W- U
set global-reputation-list []

: G" K9 n; z/ w, j  Z
) P: H% t* u. kset credibility-list n-values people [0.5]

$ |$ e9 v) E) \: V" J2 O( b8 y) W7 H0 P, ^" H6 s' d! M
set honest-service 0

( Q# f8 K2 q6 s( w: R; B, F' q# x  E7 H' @# o) x
set unhonest-service 0

. w" O) f+ |% ]  {5 u2 P/ y7 f+ S3 G( J' j& o0 d6 V9 i
set oscillation 0
1 J* p* E) V/ \/ _/ U# g; K
4 n/ `% `) v9 n& I
set rand-dynamic 0
# L9 w6 z8 I6 X8 M. ^0 C! v, g
end9 P( _3 F1 F0 u/ ?- A: S' ^, Y
" W( i' I% K  S7 n3 L
to setup-turtles
; e, n% ^) g5 b- @" hset shape "person"+ b& t5 a4 l; p9 y) ]
setxy random-xcor random-ycor
0 `* G0 _6 h+ P% @" _set trade-record-one []
6 D  y* X$ L7 ]
" Q2 A& w# w$ W. \3 x' X! }
set trade-record-all n-values people [(list (? + 1) 0 0)]
0 M4 L2 g" W( j, ^2 j- l, W
( u. s" W% b5 T- q; [& w
set trade-record-current []4 P9 I7 s$ F0 V1 r. N3 U" ?
set credibility-receive []0 G( L, [1 D" _1 S, T' _) O
set local-reputation 0.5
; P; q+ ^7 ]# xset neighbor-total 0
0 S" S/ p6 z0 H7 Y0 U+ `  ?set trade-times-total 0
0 f& P2 A9 V9 o" Xset trade-money-total 0
/ {2 l3 T8 |# y! Q: Gset customer nobody
- Z+ G& T, R& c" S( @. Bset credibility-all n-values people [creat-credibility]; {) w$ C& |/ {6 E
set credibility n-values people [-1]
4 m3 m% u" ~5 E7 f4 T# Eget-color
) j+ x7 c( X' |- v9 b

8 t$ O1 v' N3 y9 N' J& Dend
" y& u+ y5 R6 m& H) i9 H  r8 [3 ^% O/ t, ]% N5 Q! m
to-report creat-credibility
" c; Y# P6 N2 K8 `report n-values people [0.5]
0 G8 M: Z* ~9 ^/ {7 nend
$ k' {3 `! F' N. j* Z; A
4 l$ i& s7 X. E7 t" k1 Z1 `to setup-plots
$ {1 G9 _- R/ F( K0 i4 `9 g& S4 E" _1 y, `: C( j& O
set xmax 30
$ j5 v% C6 Z( h, c6 v

$ _5 l1 Q( {; p3 K- @! x. Gset ymax 1.0

' `% q2 F4 |- T
9 K1 B4 y6 `" p3 G$ {' I9 }8 C" Jclear-all-plots

8 E$ E+ a- N0 R: V$ B; I/ c( z: u) k4 z8 r
setup-plot1

! E" d* U! |  t4 ^! }. c; c% T: N: b" \
setup-plot2

4 b: i1 D8 z9 a( y! G5 T0 P/ b8 V, i: ^. ?
setup-plot3

/ X  D/ I5 {1 S0 {; M+ w! A4 pend6 i# E6 t% b0 K7 Y* x: Q

+ z4 `9 p9 ?1 z1 `# H; V- h+ C2 @;;run time procedures
5 s9 O) s0 u* p2 D# b; U7 O0 e
! w. d- B4 M" T: Y( ]to go* A4 N5 E4 `# a* m& _% N- `
0 D! b9 X8 n+ o! o7 d8 f
ask turtles [do-business]
3 a2 v# c& K& Q% A6 P; R4 H
end( v$ R5 U$ W# u
! ~6 R+ K+ N2 ^% D1 K% S
to do-business
4 M! c# n' S2 D+ |! A

$ {8 p, u' V; l% q. M6 m2 n# A9 ~- p
rt random 360
9 v+ n& H# _7 e' o) X, J- {8 \

. p( M3 n/ {; g* O: Yfd 1
* q- R  }1 i; y2 R# p4 W
; `% A7 A: |; `, [! m% f
ifelse(other turtles-here != nobody)[
9 K8 [, X! V6 e! G% C% g: D8 j1 q

3 t1 x  @8 n' E# u/ L8 n6 Z6 oset customer one-of other turtles-here
5 r& h7 D+ _! V9 b4 `; B; [

6 R7 O& F: K5 J5 E% y;; set [customer] of customer myself
+ A+ X4 ~( V, {9 H" \. u& t

% i1 H) s5 s+ a4 i8 A; Jset [trade-record-one] of self item (([who] of customer) - 1)
9 S6 ~3 J3 R" X, B) q[trade-record-all]of self6 O! i& j4 H8 k) G
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

: g, Q) _4 Z& Q; P. H
" w3 s: E) ^& E2 k! V# w: F# iset [trade-record-one] of customer item (([who] of self) - 1)$ b) ^) x) \$ e) j& U$ q
[trade-record-all]of customer

! X; d6 }- _  p+ C
# o4 O2 s6 a. E9 wset [trade-record-one-len] of self length [trade-record-one] of self
8 F. W) V+ N( s

4 t) L  x2 E3 Kset trade-record-current( list (timer) (random money-upper-limit))

" K; z' A; Z+ V
( w- B  U8 @/ M8 i9 Mask self [do-trust]
" t3 P  z* A9 i$ h% E;;
先求ij的信任度
# y5 _* O4 k* P5 \# W1 e& j3 x- z
' E5 K$ c. \! J) Qif ([trust-ok] of self)) O3 b8 a- W9 `* _3 }7 t5 x
;;
根据ij的信任度来决定是否与j进行交易[& h4 _/ q" d' u1 b( `9 E1 H
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself3 M! v/ e: C! ?" o
+ A: K: T0 y+ ]% z  o1 {5 P
[
) ~8 V1 f# p; D
3 d2 A+ T- S! l& m
do-trade
# F. j- |1 n9 ?8 e* G
+ [- t" D  }7 t3 v
update-credibility-ijl
% Y4 s3 p' M5 q

6 Z$ T( k5 t; x& W! Aupdate-credibility-list* L* {$ m( _$ ?7 Z! R

, P" ^. C* R" `- f& ^3 h' Z/ h/ Y) X% H
update-global-reputation-list
4 J5 F3 N9 c  c2 c) ?8 t+ J
2 I9 c2 ?4 |% w' {. c* P2 F! e4 E0 K
poll-class
: ~( s9 u: G3 ]6 s: q1 U$ u) B

: M& H* V, J3 \0 eget-color

/ D6 j% u+ }7 l/ o" G2 ?) b5 {( ^/ g, n" I% }
]]1 s$ ~  R) s7 v7 O4 s! m
' r7 J( `" [* Y/ e  z& _/ }# j/ B
;;
如果所得的信任度满足条件,则进行交易
; P( ^& ?. A% F+ R( K/ a# m, b' S5 l( k  `
[

: c: j. ~. q" I0 U5 ]  ]2 ^: |# P6 @, @& e7 C( k. N( c0 ~
rt random 360
1 d- ^' I# A1 j6 b

2 E, u$ P$ t: c9 }& {5 [- N1 ?, ffd 1

4 J7 C# y# S2 {5 j. }  A( K, F+ A1 l+ K4 H
]
2 o7 s$ J; b- J$ Y  j2 c2 A- t

! d% W; B, Q$ send
' O) a. l1 E3 c& q5 r" _* s$ v

0 ]9 }" n) W) }( u6 [4 Fto do-trust
' P& F) A6 `7 uset trust-ok False
2 S& F% G% r, w. e* g
" k' R$ X- h# B7 Z( B5 t

$ O" o/ E* ]' P  i" `let max-trade-times 0
$ z2 H* A1 _  T4 Aforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
& p8 I& s! ?* W: @  Alet max-trade-money 0; P/ t1 f4 R1 Y$ F2 a
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
4 ~9 Z0 a5 K( n# C* b  J0 C+ Blet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
5 W: y8 R; v4 h! h* ~; O- u' R6 f7 n% b$ K
+ L% [1 f8 |, I5 n6 N
get-global-proportion/ v5 g  L. y9 X  _$ j9 y6 u# Q
let trust-value+ ~9 r4 n; O8 X7 L
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)

$ h" Z; [* S, Xif(trust-value > trade-trust-value). W  I0 h! `& j; T% ^1 F
[set trust-ok true]" k5 j) H1 M: ^' ^
end4 d8 L6 q; q" {3 e6 `, Y+ n
% ~2 u9 ^% l7 [
to get-global-proportion
- ^! U: B! n& |$ V# [4 v7 N9 \) Iifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)5 g" c+ ]$ z# \
[set global-proportion 0]
/ e: c/ `. `1 y( N7 c9 Y. n/ |[let i 0/ l+ y$ }/ f& F# B
let sum-money 0
6 S& U. E' l( vwhile[ i < people]6 D/ q% a5 c" g% V: F
[3 l0 K1 `2 h% f0 M# J/ [
if( length (item i
# {$ q& ^, e5 w* d2 o, l8 x, j+ z[trade-record-all] of customer) > 3 )
" S; p, Q% f3 b* h- t% w
[! T) L0 a) ]5 C7 v( u) [
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))! y5 W4 d* V7 u& p- S$ P; {
]
; J+ [. K% ?. R* p- C) Y]
) d' C2 s# l" ^) w( Tlet j 0
+ S  p! y" W3 t! F8 W5 A2 {3 mlet note 0
. Y" _2 ~2 f( w+ C; ~while[ j < people]
) p& i* Q) N! B. q1 \[* d2 C( D9 ~, o0 `) q3 F8 ~; K6 v
if( length (item i
8 h, J& x/ x- b- J+ h: R  P[trade-record-all] of customer) > 3 )

: @' E0 Z- e+ I[
' r; H7 S& x8 x4 Sifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
) }: _" Z1 D8 E8 O[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]$ q& K' o2 Y  c; F5 J: k6 O! K
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]& T9 J4 Z) p! X! b
]5 G3 [& [: p/ I
]: ^4 ^6 H; b. ?& W7 W1 ^6 X
set global-proportion note
5 `& [) T1 R' z! w0 N: i]. w) K& k& r1 n; l( ?8 d
end
* z+ l& p7 E4 h0 Q( [  _. T$ F3 q/ H6 t8 Q; c! Y
to do-trade! I$ d- ^0 k5 j- x
;;
这个过程实际上是给双方作出评价的过程6 A& i8 \/ C- i/ M# O2 b
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
0 p: b" ~1 H6 `1 U" {3 yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价  |  i9 P0 o2 a5 Y5 d: Q2 \
set trade-record-current lput(timer) trade-record-current5 c4 }/ C5 e' [0 s: L3 g
;;
评价时间
2 `! k9 w9 F; o* Cask myself [- e7 T2 r, z# h! `) N
update-local-reputation
# Z& \$ T0 n( S8 I* J9 O+ Xset trade-record-current lput([local-reputation] of myself) trade-record-current
6 s+ N- T0 P3 [- R4 |6 _1 j7 _) l, a4 x' {]
" {% j- p0 }% R9 O3 e6 wset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself. _; I! f9 L6 J1 b6 E% |
;;
将此次交易的记录加入到trade-record-one
# [0 @% \$ ]* E1 r# cset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
4 l$ F, B6 d- T6 `" |. g+ n! dlet note (item 2 trade-record-current )
- U0 H# O2 T8 u' t+ y1 t9 eset trade-record-current: W* C* X4 o% _+ N, a
(replace-item 2 trade-record-current (item 3 trade-record-current))
6 s! J/ ]# z' ~; Z+ \; L! K
set trade-record-current& P; C/ u  s% L) K% X: j
(replace-item 3 trade-record-current note)6 A9 s* B$ j! M7 V8 ?% F6 v" O

0 s) ~) k! L8 ?7 C+ F, K
6 i- n& {) p5 F, @& ~
ask customer [
8 z2 g3 e! ]# E+ W# w+ u/ xupdate-local-reputation
5 ?& q1 I5 j; a- L" pset trade-record-current
! }. |7 N; z% e5 W& U8 B(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

( X% D- @  D' i7 o9 f2 l( X]& i' W; F+ t- [( ~8 B
# t2 b. P3 I3 R2 j: Y4 H
* `; @0 n3 `* ]0 q3 o+ N( d
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer, ?' l5 F7 \& z' K. b2 m5 p

: A( m5 x% j! {+ Yset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
5 v+ \9 a$ y5 ~$ d;;
将此次交易的记录加入到customertrade-record-all2 T$ @" \- u5 c1 N  T
end
" U! n; P1 E9 j+ m1 X
2 X5 `  ~" b4 g: i0 L5 @$ Gto update-local-reputation! x! s2 k+ x. a3 K# Q
set [trade-record-one-len] of myself length [trade-record-one] of myself3 v' V" ^# c2 w0 S9 S- D) p

1 j6 I2 y5 l3 [3 Q
7 G" t+ ?9 H; ~% G# r" n;;if [trade-record-one-len] of myself > 3
$ Z. ^. m, z$ c
update-neighbor-total. k& ?% Y# T& X0 q
;;
更新邻居节点的数目,在此进行: [8 l1 m% i- B6 N* k$ d+ N  Z9 T
let i 3
' k! {* w! U/ p: E( E4 n. Blet sum-time 0
) y! Z7 r: M  E& ~$ e' Uwhile[i < [trade-record-one-len] of myself]/ v' H7 ~4 i6 M& B: I0 ~
[/ N! I$ a8 O" A, [* h
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
) t) M1 |4 [. J; Jset i
8 S0 L" ^( J9 ~7 X( i + 1)
6 H' g" m0 u3 N3 c  w7 `! Y1 b
]3 f/ ~: n) C6 g* A+ \* x9 T
let j 3
4 ^. }# F7 l1 O- G3 l/ E% rlet sum-money 0
9 E. w# n/ t* `- K3 Q4 |while[j < [trade-record-one-len] of myself]
! G+ p; q. p+ s[& ?* V% X1 }6 [- q9 I
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)
2 j, p( {& I) _$ A4 x  Sset j
! `  _7 n7 y) U" g: \& W  t$ s5 Q( j + 1)
, |5 i/ F+ w& E+ O- u) H
]; |( t' U: W/ ~+ n2 Q
let k 3% f, {+ c1 l) j) f8 g  @& |
let power 0
) R0 i% G) c6 Q5 zlet local 0
" K! M( ~* M9 E8 H7 _while [k <[trade-record-one-len] of myself]
/ @; Z: s7 O+ @( l& A) b9 v/ x  c[$ L. Y6 a3 _# }
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) # i9 g5 T' Z: a; B; C
set k (k + 1)
7 r0 \" b& H5 R9 s! C]
2 p: M6 A1 A3 kset [local-reputation] of myself (local)
" S# L  x( t: @4 ^4 M* O  h7 r9 V7 bend' c0 J+ N) i; T" `) s5 v0 d) f: R: z

9 X! e, j' z( E3 k3 Bto update-neighbor-total
: T0 L! l) c' g" ]0 C* Z) P7 A/ j+ J% Z& z9 C8 L2 m
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
; R7 w9 j' Z5 R* Q- E( c7 o
' y2 X4 }5 F- A/ p' T- @& I; K
# c* p% q$ w/ K3 u) K  k
end# X( w% H% H# i( [  R( i7 D; x

8 X. P* b7 E$ J) ]  ato update-credibility-ijl
0 D/ H+ E* I- o" j
' ?$ W9 z, \. o" H5 s: C;;
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。* j6 b0 |' m% \2 }; e, d3 `# ?7 u
let l 0
6 _6 E' m2 l& O" {) Y: Y( dwhile[ l < people ]% o- [, u* ]7 G4 K8 z
;;
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
# w# m% m5 f% _# Y8 b, D[( Z/ ~, e2 r! L4 O( p
let trade-record-one-j-l-len length item l ([trade-record-all] of customer): ^* s; e4 g) o/ v, M' t& A7 S- L
if (trade-record-one-j-l-len > 3)
2 l9 u. Y) b  }6 h/ O[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
1 G9 D" E7 ~/ Q: L/ Y  [let i 3
5 i: b0 K) {8 g/ R! X+ t. dlet sum-time 0" W1 N7 @' K; H" e
while[i < trade-record-one-len]' w, K5 T5 A' h7 A" }" C: \* @
[
# j! y4 Y+ l1 eset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )) g0 O3 j5 \. `+ v/ J4 E
set i+ e, ~3 h' n4 r- Z: C) t
( i + 1)
1 n3 _( X; ~+ F
]' n# n0 h/ x# C, \, {5 t
let credibility-i-j-l 0
& s* E) n0 T! o2 _;;i
评价(jjl的评价)) n/ u" x1 @+ p
let j 3
* Q- j" b5 p9 `7 V8 Vlet k 4* z. d- y% o. ]
while[j < trade-record-one-len]
6 H; e  R- u+ a' a0 i* c[8 l% \9 m, K8 w( y' C; ~5 w  X
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
. ^6 a3 t$ @4 g% o0 O* hset 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)$ J5 R* P5 z# i' s! L5 N' q
set j. |) w3 W! B3 L! w
( j + 1)
) u7 x  Z, T) V) d( F  b+ U, |' w3 Z
]/ L3 U. o7 h; d, x6 M3 ]0 {
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 ))( }1 t7 @; H# j9 n) e6 l6 R

+ k( H# ^6 @1 m, \0 c

1 b/ ]( U5 g. |let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))' t  d, ^, Y2 j/ s5 A* |
;;
及时更新il的评价质量的评价
% _& X9 \" G; w" Y5 n8 Gset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ], R9 R5 ?* \! T+ a! i
set l (l + 1)
$ d+ P! B, W# F2 e. V]; T- v4 @  w5 e: N7 {) s  y1 n
end
+ Z4 J1 J9 C7 }. N5 W6 c1 b9 [
to update-credibility-list* b. ~: D0 U3 P* V3 g; g$ K
let i 0
+ z( o- s6 `+ r* z( Mwhile[i < people]5 y0 ?" e: ^" m9 @9 y
[
7 j1 H% i4 t4 elet j 0  X3 N  o0 R$ ~! G7 G4 N( V
let note 06 k3 q0 c) e' Q
let k 0, ~- ]0 W7 r% P5 P
;;
计作出过评价的邻居节点的数目
8 f1 G! i0 A8 h0 `while[j < people]) E# U, g3 G( B
[" y# g1 x8 T3 X) {
if (item j( [credibility] of turtle (i + 1)) != -1); F& k- @: {( @) ]/ G( Q% U' V
;;
判断是否给本turtle的评价质量做出过评价的节点7 C8 v1 D" h! i& h
[set note (note + item j ([credibility]of turtle (i + 1)))
1 E* Z, L# }' a( s# |! @! z1 O;;*(exp (-(people - 2)))/(people - 2))]

7 e: l, i0 A$ _8 C; j1 aset k (k + 1)
* m; J% l$ G" f- o* y& ]]
2 T& B2 p3 d& m( Kset j (j + 1)
0 s+ {7 y, P3 I: g9 ]]8 f4 i& j% V4 x) R
set note (note *(exp (- (1 / k)))/ k)
& n% S0 j' I( J& U9 Xset credibility-list (replace-item i credibility-list note)8 P7 I- A$ \; O, \7 k' n
set i (i + 1)
9 E; e$ N, v/ d) e0 o7 V( b]' Z+ E, ]; \/ V3 l
end
% f+ P2 J" ]' e
" y) T) i, z: Y$ U1 x2 P+ tto update-global-reputation-list& q9 |9 Z3 B4 _4 e$ X
let j 0: v, _1 V3 `' ?- t) m7 b
while[j < people]
' y( g- o. g/ @9 A6 q! \" `, E[
, B" j5 R9 G% L5 V, jlet new 03 l% t- F* h% S# X4 k5 v' E
;;
暂存新的一个全局声誉! W+ U. B) K2 C/ X9 G3 R
let i 04 [" ^' S  ?% Y5 W$ {. R
let sum-money 0& e! M! X0 F  U5 A$ X' M2 x
let credibility-money 0, a4 h# A) a- @7 O
while [i < people]5 b& F3 f& q' {* r* O5 w
[
! u, L$ {/ P# a2 F( |# o4 s7 pset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
1 @6 x' X6 Y& E, a5 h8 F3 ~0 |$ x7 Yset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))+ x) }, D$ L; U% U4 t! W3 H
set i (i + 1)9 k3 E- t$ c1 g. [. q7 x1 A
]
1 W+ f* S( L, mlet k 0
+ h  d# x# c) X- I% h' N  glet new1 0& k8 H6 _1 F3 u; {- w) w/ {
while [k < people]
- J  \+ s! d1 d3 y+ v6 m: {* b0 Z# J+ q[
$ _5 ~  q3 H3 H# f0 _0 |) L# b* x9 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); D2 m8 F/ b. O# I. d, r+ c$ ^
set k (k + 1)
% e4 s# O* n2 d- M]
* H8 O; Q* r/ y7 f; D* j  rset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
, @! e( h$ e( |/ e1 h4 aset global-reputation-list (replace-item j global-reputation-list new)7 J  \& f9 |0 n/ ~5 G) v; U
set j (j + 1)& D+ y) p: o% [( c" x1 L4 b) F
]1 o& ?2 w# k2 p/ y# _, X9 N
end
, x8 `; U3 i9 X+ J! d9 K! o$ K* m% N( Q9 ]" v) p
2 D4 C5 I0 F" `
  b9 J1 w4 p% V
to get-color
; \0 a, x% F2 g, ^+ T2 }6 u3 s. Y
set color blue
; J! r0 z5 f% R+ b9 ?
end
/ a7 j3 T1 C' @; M$ |
3 f' F9 O3 o  s, dto poll-class
6 D: A! T9 J- N1 E( A$ M( Qend
' R( @! {2 b+ U, A0 g9 M3 E# H5 L$ y; m! E
to setup-plot1
4 j5 ^( M" A$ p! m) p+ a# {# n6 d# M. k# F
set-current-plot "Trends-of-Local-reputation"

' }1 j8 c3 o  K, w- C* M
# J& G4 G  F- M$ H, [' @4 aset-plot-x-range 0 xmax
( Y, k& k  m$ e0 J- B
, P' |, s& C2 ]# Y& P" N: E
set-plot-y-range 0.0 ymax
  l5 N; @1 p/ O3 X& K8 ?8 O1 R, o. R. @
end
- W/ O7 d1 ]! k: |  }
: z8 i! o' j$ y6 D: lto setup-plot2
& }0 U5 p5 O  D( o5 A" g2 a4 a, O& |  a- g! P" n2 F
set-current-plot "Trends-of-global-reputation"

/ F/ L2 c2 k5 |, M4 [8 ?
% N$ O6 y5 ]- M4 F" T3 G5 g6 y1 c, pset-plot-x-range 0 xmax
8 l5 [  m1 l& [- X: h! T4 H* V

2 F( U) r- j2 D% `: uset-plot-y-range 0.0 ymax
6 R% f0 q7 {* W5 v/ [& @
end* J) _9 Z. i6 h  q

" |) R7 o) D: }  Y7 b% Q7 y+ Dto setup-plot37 P' F4 c9 w; B7 ?- ^9 e& w! n

2 ?3 l8 n. Q: t7 q4 uset-current-plot "Trends-of-credibility"

( h$ {4 J3 h! T! ^
( r8 n6 u7 f- p+ o  J3 b0 Y! |set-plot-x-range 0 xmax

$ |" @) d- J5 R  O$ r# h  V4 g& m" l. o2 J8 r: H
set-plot-y-range 0.0 ymax

- Q: W% f0 s/ C( L% Dend  V# R( A& Q6 u. t' J4 E# t
( z! Q# c) J, \1 p1 C% Y: E
to do-plots
* }* v' M+ i& m0 u$ eset-current-plot "Trends-of-Local-reputation"" A: q& k3 {$ ]
set-current-plot-pen "Honest service"8 u. w, Y2 S- @& Q; `
end! D2 G- \6 x) A; i% K

- e0 g. m4 r* r0 b- H[ 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.
) Z0 q, r* X' W% j0 H8 Z
' Q4 n. e# i( a; ]4 {8 o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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