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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:- G4 H* u* N4 G% i- M# y% ]
to do-business ! i2 W7 X: g( l, ^! t/ ?1 z
rt random 3605 a* }# a1 D( {" z
fd 1
4 t0 H! v7 K* h6 ^' ]& t ifelse(other turtles-here != nobody)[; ^. ]; E  W: {
   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.
& J7 i, F+ ~! ^# s, s+ W4 N   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
# `: z  C9 {: n0 j' F   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer2 z. o. y7 ]% W: s% d
   set [trade-record-one-len] of self length [trade-record-one] of self3 l, X3 V4 W% x! x. g9 |5 f2 W
   set trade-record-current( list (timer) (random money-upper-limit))
/ l' t2 j% I* C4 j0 n' c' l5 _4 Z! c7 L8 o+ p/ A( t4 A
问题的提示如下:
0 \0 V4 K7 r9 J' j; a  @& N" _  `8 j  p
error while turtle 50 running OF in procedure DO-BUSINESS
; h) d' u+ m$ r1 t  called by procedure GO2 n' }9 O# A- q* B+ @7 {4 G8 u5 s
OF expected input to be a turtle agentset or turtle but got NOBODY instead.  c2 I! ^- e0 B1 Q0 ^8 e* \
(halted running of go)2 l& p) Q. y6 Q7 J

& M% x7 T) y* d  c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~~7 R7 n" X4 M; C
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
$ D$ w: ~8 U& w0 u" a: s  Yglobals[
' a0 Y: J, y# e3 b: zxmax' v7 |/ [, |* m. [, h
ymax
9 P9 Z3 o8 `8 m/ k' Jglobal-reputation-list) `* `9 Y: G  T( U- x
1 U3 m9 ?4 x7 U" ]% |+ l
;;
每一个turtle的全局声誉都存在此LIST
! K* P! b% ]% D2 o' Icredibility-list" J( `4 [# P- z" {& j. c
;;
每一个turtle的评价可信度
0 i7 k8 ?# Z( N  thonest-service
/ Z" o" M# B5 a; Q! X; i* aunhonest-service! z$ i2 ^8 B* a7 N* K: L8 ?; [" \$ c
oscillation) z$ c5 \/ v8 R) g" O- E
rand-dynamic) X, W& h6 c- _9 K* i" l
]$ v7 C3 F2 Y2 k6 b' q) P$ x

' _9 ?' n7 c8 iturtles-own[
7 u# H5 U/ @8 p3 v) S' Etrade-record-all
. j& f5 O! p/ A( a, ]$ e;;a list of lists,
trade-record-one组成/ K$ @4 O: x. Y  N: I
trade-record-one
! h8 N' d8 ], R4 a3 \1 {$ n0 V* a8 O;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录9 w% i8 G& \  ~& ]" T

' [# A- p8 i! g8 C, t;;[
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]]
3 y: r7 j. P; H, @4 y# s& s5 htrade-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]
/ \- |; ^, G" R- Ccredibility-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
" M' j) C9 ?5 Zneighbor-total
2 s2 u! ]$ I+ Q;;
记录该turtle的邻居节点的数目% f2 l" G# m: Z6 o
trade-time/ _( a6 d, z( S4 h  ]
;;
当前发生交易的turtle的交易时间5 v5 X2 V& V& S; ?  M: x2 R4 s
appraise-give( S8 L- o$ C5 j/ k: C& {$ s% _
;;
当前发生交易时给出的评价
! D! y, B3 `# N0 ~) j4 K, B  nappraise-receive
+ w4 F+ q% E" I/ }  _;;
当前发生交易时收到的评价
: S# [* J5 g3 d& C! X( ]: @appraise-time
2 A) i' f) c' X( O4 ^;;
当前发生交易时的评价时间! i5 q% r& X, R8 @- J2 p* E  W8 P
local-reputation-now;;此次交易后相对于对方turtle的局部声誉! [- i; G. Z3 Y. K0 w
trade-times-total
* u, Q  k) r3 r: K0 e* N5 u2 t;;
与当前turtle的交易总次数; U; ?( F0 ?, Q* y
trade-money-total
% i8 F% {# L* W# T;;
与当前turtle的交易总金额+ w; h3 c+ I  O
local-reputation" M1 V+ ~8 m4 U- n+ a+ S; c
global-reputation
" O8 j8 {# |/ ^  o/ L/ G1 _; }4 \credibility
1 b5 D! ?9 b/ A! O' Y6 }! w;;
评价可信度,每次交易后都需要更新# F* {  ^. I; `
credibility-all: A" ?& b4 y6 T4 L( {
;;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
" b* C& {8 E7 }' @+ l% d
$ k! C& h+ Z( V  Y7 `;;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
5 J. d8 D0 R4 n7 l# k/ G, ?1 Icredibility-one
& z- a" W% X, J! c;;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
! N  a" l! ~# F; H5 ^7 mglobal-proportion7 ~, H* z# O# X6 m
customer6 L9 C) s: O% ]$ U* w) |$ T
customer-no
/ B1 Z7 P& w3 }8 Ltrust-ok
  E3 H6 E, I) Q# r7 t1 E' k" i3 ^trade-record-one-len;;trade-record-one的长度% ~' g5 l1 h* x9 l/ |3 v5 {% J
]
' @5 H/ |9 H$ {% U% D4 ~9 L' W( X$ w8 a. Y, q
;;setup procedure$ `& }" u3 Z5 ^1 Z+ q; t
4 u/ j' W# R6 j" {
to setup
! C; V: g7 w$ U; Y! K$ A5 V0 d0 U  a, J# u1 j+ g7 _- a9 X/ }3 K
ca

4 `1 Z9 U/ U/ t2 `. D' p/ o; k( p9 x! v" k! X( I0 S4 i
initialize-settings

8 n" D. s8 O6 y' l% M1 M8 }* q5 g
7 I, `) i; m& e$ F5 B7 a! n& Zcrt people [setup-turtles]

  G/ u* a9 D, [+ n6 T/ ?( D9 R7 v
8 V8 ?! {" J; T/ Q2 Areset-timer
. @* N/ s7 x$ G8 s, H7 M! O$ h
8 [, p( g2 y1 r/ Z. i& k' \
poll-class
0 j; l1 a6 U6 J; ^* G: Z

. g& `0 y) S0 Y: rsetup-plots
: R- T+ Y* i! m0 u' b$ v
+ V; M! I+ h& A+ u4 i7 H6 F
do-plots
9 o% n: Q9 L2 j( g/ }1 ^
end
+ f/ F: _8 z  k( v- v. d
6 a: k% V1 e% Bto initialize-settings
' P) q8 @4 S* K+ t
0 W- F6 B6 Q; Z$ Eset global-reputation-list []
3 r$ V* _4 ^5 c) j! A4 K7 }
: k9 J" Q- D6 `1 t! c% V) r2 h
set credibility-list n-values people [0.5]
& B; p6 i% d- ], F/ X

7 O) Q8 B  j7 o/ Wset honest-service 0

% D# v8 T0 g# Z: ]9 c: q
8 W$ b9 N" u; b3 k' p+ `set unhonest-service 0
7 R, a" c$ s" w  R! I* l
% O6 ^, ]  f, ?5 n: N; C7 S" v+ V4 a2 i$ O
set oscillation 0
9 r6 J" `' T9 ?% w2 _- a& {, Q

& H7 O* a6 O$ C2 n" Zset rand-dynamic 0
6 G# d% `+ A, E5 e) g
end
) o# |( r7 B# N/ g. J1 R
" [5 K* H( \( D  |* Uto setup-turtles
3 l& D& C6 {) F' x2 `set shape "person"
3 S6 q' _; H) Z" i0 |- N1 ssetxy random-xcor random-ycor% L6 ]; C" [; G) k% i
set trade-record-one []
) _7 F& l; Y  c9 A0 d
8 {; a9 [# X4 o9 {( s
set trade-record-all n-values people [(list (? + 1) 0 0)]
4 e% g, H6 w) j: Q, A

0 r. `% R# s# |3 T- `set trade-record-current []
; k' L2 g# l4 H7 cset credibility-receive []
5 `# M1 Y5 W# w7 }' Y. `set local-reputation 0.5
% t( `3 H3 v% _0 v0 Zset neighbor-total 0
" `; B0 V2 v8 b( R; l5 t# qset trade-times-total 07 u. m: {& O+ w+ [& W) y8 y
set trade-money-total 0
0 \) @. H  n' Y! {set customer nobody
# i( N2 U' }% T8 |; L8 fset credibility-all n-values people [creat-credibility]
8 H* d/ w2 {) s" Z0 Z1 |set credibility n-values people [-1]1 H/ d! G* d' h- e5 Y1 T  Q5 p
get-color
1 l8 h% D; o% a* p& Q7 y: W

3 Z% H3 |% T" j( J( Mend4 N. x, P5 j" J4 r

6 N  b. j0 ~+ t1 Gto-report creat-credibility
7 V' g; u7 A# A. Ureport n-values people [0.5]
$ B: ?7 G" n5 b, I3 k7 `end
7 z* G5 p& [$ }3 T, V: J
0 X. y+ ]* m3 J7 G8 |7 O% yto setup-plots0 I( e1 E9 C+ C7 t: s% ^5 F
- @. H$ ~! j9 G0 C; }# U
set xmax 30
8 T0 Z8 x) e& }: d8 F& A8 U' }' g

3 s- ^. F3 x0 |. o, M: ?$ W& d8 Hset ymax 1.0
2 k7 F! [9 x& J! z, Q$ {# I0 ]

% K% Z$ }) @2 K4 s  U6 |0 bclear-all-plots
5 v/ t2 K+ {; v) e$ n: p: q" A

( q) q: U- r. U$ S/ D3 Rsetup-plot1

8 X' i1 y) I$ P) r
4 Z# s  K9 Y/ D8 d* jsetup-plot2

( z( W2 V' O/ t& w! u
6 J8 u' L, A! `% \/ ?) v. ksetup-plot3
! w  G. S" s: U3 C8 h# _- g
end
. p+ p$ @1 h" m8 v
  G: w8 V7 m* s1 V;;run time procedures
- m  }/ s* W0 a5 h, \$ p$ ~
6 r8 B6 Y5 N. n7 Dto go' ]0 H7 H+ ~  p- b; n
+ g+ |5 ~  Q) ?5 b
ask turtles [do-business]
1 w7 l! N4 t9 r' X( E
end
5 M; @5 }) I. v1 ]# ~  E: y
$ d. r# U! \' ]/ N4 v- O2 `7 m$ t: jto do-business 4 r1 p( y& }) b  j

0 p3 l% y8 C3 X  X5 g/ C5 _& z3 S$ C; S) U
rt random 360

' @) N1 I( c7 j* m7 z, I- T2 V: x6 x+ _, {+ m/ G
fd 1

# u- n6 M- U( D* ~, C
& c; N* O9 z/ @ifelse(other turtles-here != nobody)[

$ e$ |% Y6 p5 Q* Y. D# }/ y* {! t7 L" U- ^1 }- }
set customer one-of other turtles-here
/ \9 a+ q' b; F
# `" ]) ^9 C1 w4 X( Q5 z3 L1 K
;; set [customer] of customer myself
8 X/ }' B- s8 \& c7 ~

( o  O9 C# m5 a! ?set [trade-record-one] of self item (([who] of customer) - 1)# N, m$ |/ }. @+ T' ?& h
[trade-record-all]of self
( o0 A- {6 Q; A0 Y, L;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

, R) w; v% W8 d: _% W6 d) y
6 E; r/ _3 J' E2 F& @6 kset [trade-record-one] of customer item (([who] of self) - 1)/ L$ {7 o. H- _1 N( E1 @
[trade-record-all]of customer
' Y3 }' ^) `5 p& c
% K; a1 V9 |* p
set [trade-record-one-len] of self length [trade-record-one] of self
  F4 F6 K( I8 L+ v5 G
' F4 _. b; \( Z- E9 k0 t  u0 W$ [
set trade-record-current( list (timer) (random money-upper-limit))
- K# ^; W. J& X( F

" K1 F, E4 t( u) g7 n$ lask self [do-trust]
/ r# ^( m: f/ e$ c3 u; a5 v;;
先求ij的信任度. c9 `, K) [$ I; l

- p# h7 E3 N. {; pif ([trust-ok] of self)' K0 q- i, a0 e. i. G6 |
;;
根据ij的信任度来决定是否与j进行交易[
, n/ W4 m! H7 ]ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself0 n3 S# E: Y7 {+ O' u* s

+ }& h' t  Z" b1 E[
& p" R% I) r9 j$ u2 G* j+ r" ?; Y  L

4 A9 C6 b/ P2 f0 K5 c. ^( q  Rdo-trade

% v$ _% C. m) G6 ?$ c- a( Y9 a2 d' b1 m6 V
update-credibility-ijl

7 g! ^3 \0 D6 n8 |  q5 c: v
. E$ e+ [7 _& S. I( s% oupdate-credibility-list  D; b' N5 c# q. v& S5 o" M3 ]
* N8 {# u- c0 u% V9 Y
2 _, S. Z6 h6 \' [* W/ p- v
update-global-reputation-list
( O6 {. d8 Y* \

% V( g+ {+ L7 }. T9 z% e4 d3 ipoll-class

- {: ?! {/ x. f% n4 C* M3 i, z* w  o' |
get-color

: ?3 n- N% e  z7 _8 O6 f
" b" c4 v: X1 X& @]]1 J, s! Z0 I& o6 y
, O9 q" a4 b2 k( S, ?
;;
如果所得的信任度满足条件,则进行交易
% L' C2 j8 q& Y1 v9 Q5 U+ t% _
6 a" B- O/ U/ T- e[
" Y3 M4 x. p2 U! U
1 {; n+ y& E1 e+ h* k
rt random 360

8 g3 M4 C* M& p0 G4 j7 e# X, H  m1 C% ~) i" k; }( o
fd 1
$ ?' w0 B( V: `" O1 a' Z6 n

: x' s0 _$ s) v9 ]; i]
! _* p; Z: z3 {* N* k/ A& k
: a7 \* p$ `: G; D& j( z5 n
end

2 X5 a' l! `  e2 F" P$ x
5 I, `' |* c- ^3 `1 sto do-trust ) H& J2 ^  z! I* Y  M& Q; i
set trust-ok False2 l1 ~+ y7 V6 v! S; a2 F7 W/ R

$ x5 ~  l$ y5 B) U6 g9 W

. C& ]$ p- W- I+ \let max-trade-times 0% W& Q8 \. ]1 s" q$ e
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
7 U' P: J: N3 ^% klet max-trade-money 02 A9 n7 W( R& o
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
6 M( B0 }* i6 w; f0 Tlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
; s" n6 u( ~% Y! h! ~, T7 L$ O. o7 d1 X6 \
" j7 Z0 f3 A. F) I" ~: z" Q4 J
get-global-proportion8 I. V( R" I4 C1 \
let trust-value
; u1 h2 u- _$ ^, u+ ~. V( m& 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)

; [5 i" r% c/ `if(trust-value > trade-trust-value)
( C7 p+ Q( ~0 C0 O1 \[set trust-ok true]
; `. \1 r3 q) `( rend' e9 \) g  C* h* t- ]
  `+ b; I& ~( J
to get-global-proportion: C" v& z: p! p6 o( K7 W, D/ P* G& z' e
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)5 r( n2 s9 r' W( s8 b$ t  \$ n' n
[set global-proportion 0]7 u* D3 w/ B& J, j; M
[let i 05 S& `# Q( \7 Q( ~2 Y& X; d
let sum-money 0
% F1 G. w' P7 j# {7 C, H/ ewhile[ i < people]8 }: B& f2 p' A" _" Z  G9 a
[
$ S+ x5 b! l6 w) M2 R2 j0 g2 W- Zif( length (item i
& t* o# i) P" i& L8 q[trade-record-all] of customer) > 3 )

' ^4 h5 R, B$ @; ~! Y[
1 w% R  W; y: g* x$ `set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
& s# s3 a& ~0 k1 w! S4 A]
9 y4 w( ~0 [: l: G]
" F. k& X5 ~. A% _$ A) Xlet j 0  [9 I9 f9 z" Q" e* a
let note 0
! L, i' p0 N; X, Y# Q- v, owhile[ j < people]
! \4 r% i) E. R5 G% f2 Z% g8 P4 b[
+ Z$ a# ?) k" q, M0 {if( length (item i
4 P- h6 |" D6 s4 y[trade-record-all] of customer) > 3 )
" Q1 X, A; b0 @0 v# }
[
! }$ U8 x  g, K  x' I; _% iifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)# C1 V: T4 U. p* S/ q
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]3 B5 m9 K% i% v2 o6 S
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
, Y; D9 _2 N0 g8 _/ G* B- z]
3 X* U4 m8 X* E* T  L]+ F3 `2 F% h( b- b3 s
set global-proportion note
! ]& I  d- j( M) R, w2 X  d/ y  q]+ b* D* ~7 L6 N6 F7 G* y
end
, q6 Q: G' B4 J! b8 v' M+ C+ I- F/ s
to do-trade
# Q  K; ~3 r1 u: F" X$ {& \# O; r;;
这个过程实际上是给双方作出评价的过程
% b' C5 A# H: h5 nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价3 ~. d% G/ ~% `; N
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
( X, t, ]' y: C& `, Z& l3 |1 _7 nset trade-record-current lput(timer) trade-record-current8 q  n( ]1 q$ L0 ^4 l; O% n" U
;;
评价时间  ], M( F2 q, u$ M  V. y
ask myself [7 D# d9 `/ Y5 U2 E" l' u$ ^
update-local-reputation
2 {3 P/ V# `: B* B% Gset trade-record-current lput([local-reputation] of myself) trade-record-current# Q# p! a* E- u  ]
]' W1 M' }. K1 K. n
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself0 s) I  c1 j, A  P+ h  h- ?
;;
将此次交易的记录加入到trade-record-one8 `( M1 ?+ i5 T3 q2 V" B
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
) G: n" }4 Q" m" E' ilet note (item 2 trade-record-current )" ^% o" ?7 s; ~! l8 e
set trade-record-current
# o9 R$ ^* l1 {2 M(replace-item 2 trade-record-current (item 3 trade-record-current))
, i  r  Y: G( A' K6 O/ A( P* T3 J6 y
set trade-record-current) t; z& `7 j) u3 g8 E& b. F" y
(replace-item 3 trade-record-current note)
  M8 Z* B5 n* N+ V0 f* l3 o+ o) h% v  T

9 Y1 g' R& u) q5 {. d- eask customer [& W' W( ^6 K, f$ m# t' S) Q3 l
update-local-reputation0 t% b! n* Z0 _( N, N' ^8 i
set trade-record-current
$ f# W1 h" R& S(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
+ N8 F. }% m( r
]
8 p( ?" l8 @2 i: Y4 y# G  L' V
* E; N. A+ }! C& `9 K- B
  n0 W# ?  o- M6 Y5 S
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer$ y  B2 ^$ l  O1 f

+ Z: V) l" \' K4 Cset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
% w5 j& Y  l) V$ ]! ?3 O;;
将此次交易的记录加入到customertrade-record-all
8 ?6 Z& w+ C3 s/ Z4 U# a# e* e# aend8 R7 V! o2 r) o; E  E5 [

. }! s6 r3 h9 E* v6 Z4 P9 Z# yto update-local-reputation
6 \4 @4 \: D# |6 f$ Oset [trade-record-one-len] of myself length [trade-record-one] of myself- ]0 r, R1 L' \) z( L
9 |3 |6 t/ c0 U- l  i6 Q% l
- d# ^% F. x+ }1 \, q) N& l8 k
;;if [trade-record-one-len] of myself > 3
0 @$ k' u# ]7 J3 Z( W' z  R. ^" X: w
update-neighbor-total! s, b# ?7 _( C' T
;;
更新邻居节点的数目,在此进行
2 F2 C$ q( Y# R- N- Alet i 3! I+ a4 E1 K$ ^5 I
let sum-time 0
' k4 V& c2 T* G6 lwhile[i < [trade-record-one-len] of myself]+ k0 k0 r5 r6 @$ e/ X; [
[
& P& g5 N) L: {# w- A9 Y) \+ i' tset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
0 @4 m+ p$ ?/ X$ F+ H6 v: Eset i
' V5 h- ^: ]1 B+ w( i + 1)
3 U$ ^) Z. }- D
]7 c* x! Z& x8 w  {' \0 M8 M& ~
let j 3. f  J8 y$ P. @  U- w0 d+ a
let sum-money 0
! x' @1 ~1 T* K4 \2 a4 xwhile[j < [trade-record-one-len] of myself]0 g7 P  H9 D8 G  W
[
- _: H5 C9 C. \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). Q' E* j( J' B: W  t& l" ~
set j
! O9 D4 A. d5 ?5 C+ I( j + 1)
, J/ C$ l% c- R1 ]
]
* y9 l: S  d) w, A. Xlet k 3
, B: G/ H1 J) n! R- Vlet power 0
$ D% H) {! P! U. `% hlet local 0  c1 X! ]  P# S
while [k <[trade-record-one-len] of myself]
0 v: `5 t/ O/ e1 [! z# I; B[, N) s* s4 c2 W! }5 y8 Z8 R
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) * N' h& H8 [' ^( i
set k (k + 1)$ S/ D: |% ~+ h1 K) t% M
]( T; z* C+ ~$ F( B
set [local-reputation] of myself (local)
. n$ [; {0 p; ~+ t+ |6 pend
/ l; v; V( l6 t  B( @
+ @, ~8 B* m1 Q9 r" }! v. [to update-neighbor-total
5 c4 @, j% v! ^/ J7 a
( f& R. u5 c- I2 j8 m, P' x4 M) ~if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]& F' M6 j# c% x* J2 y: q3 q$ T! `4 |$ u
2 H9 c" b: n( C5 z
% v) j" @4 r4 `0 J. e, g2 p3 ]9 b) B: _
end; p5 X8 e  c. g* v6 q: J

8 i6 b' N$ Z* h  d  D* j7 V/ eto update-credibility-ijl ! l% q) N7 W; g+ \, r

$ X3 c. @9 I3 T0 J4 E8 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。' O7 ?5 u# k3 S7 M6 \( b
let l 0
/ X9 U* d% l9 hwhile[ l < people ]/ |$ B4 y0 a( c, c
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
7 K1 |# I/ i& b' _2 D  E[
8 Y8 W2 O8 N" j/ A: c# w* l2 Rlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)0 O2 C. ^9 @: x, u) ~8 L* ]9 c- l
if (trade-record-one-j-l-len > 3): y1 k5 e  O8 Y, e" X9 |# F+ l2 y
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one' s* f% l/ @2 n9 i! x4 W
let i 3! z0 s5 b1 T( @& z: t1 [, O( k
let sum-time 0- f7 `0 q" w* i, s; R  O
while[i < trade-record-one-len]5 Y5 T$ s" R' v& l6 i$ z/ S/ U
[
* l% ]- ^( I; v: n- }3 F8 K" l7 z/ Eset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )0 w$ S  [) R, R) [* u  ~9 y
set i
& K- @8 Q5 a1 C# f- e( i + 1)
: k4 w0 |( V  s
]
7 f* w9 F+ T' `! w9 A4 b$ Z9 @9 ilet credibility-i-j-l 0
+ q9 ^$ r8 Z7 Q;;i
评价(jjl的评价)
0 J/ D; k$ N$ {: n2 R4 c' m% mlet j 3% _+ g3 ]3 c6 a5 {
let k 4
6 s! y8 v; k% B; n9 V4 Ewhile[j < trade-record-one-len]
9 G2 V0 v( D% K& t/ S9 |[7 T$ B* D% h  ~0 O4 {) P4 f
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉9 t* A4 l0 J6 q0 {' _
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
& ^* o) V( ?* a1 C1 E+ ^set j: [, G4 z3 o2 m
( j + 1)
- {" ?6 ]5 w. C; L1 B8 x
]
( C. u5 W# C" |  u( z2 B4 B* K+ Yset [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l )), Z) [8 A* o! \) c" Z

, ?  s& O0 J1 u( [1 U, Y
' q* \! f/ ]. L4 T4 W
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))) p6 w$ d- y2 E) x- L, T9 J
;;
及时更新il的评价质量的评价$ R& U. y$ Z4 W6 U& B. W" E9 c
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" T9 I0 ?4 D* d6 a# F( z6 zset l (l + 1); r, R2 H( e2 Y9 \% j7 `8 D! {" Q
]
/ ?: n0 _5 a; Oend' k' R- K. h) y* R7 H; \

! Z- a8 Z. x" P; s& T7 w) Sto update-credibility-list
; b; S0 O2 E( i6 n. F5 ^9 }9 j! alet i 0
) h% Z4 F$ O# ?) f2 U5 ewhile[i < people]2 g0 f% t3 k- o- Q8 K/ ]6 ?
[& }% ^+ V6 |! }
let j 0
) c( N6 V. D% X" G6 w) h# Rlet note 0
) F4 S1 F4 ^* s/ A+ o  k9 W' y( Tlet k 0" N% J' {2 h, o9 I5 [& j
;;
计作出过评价的邻居节点的数目
8 Q% h- X! O/ Iwhile[j < people]
! ~, ?: m% j- n" C% b[' {$ t4 `1 [  P- Y
if (item j( [credibility] of turtle (i + 1)) != -1)2 }& `( U. B* A3 a1 [3 B. [) N
;;
判断是否给本turtle的评价质量做出过评价的节点
2 g  U2 X. ~! I2 v' Y  x: ][set note (note + item j ([credibility]of turtle (i + 1)))
; F: n7 l4 ?5 H, t;;*(exp (-(people - 2)))/(people - 2))]

. g6 W; B& K* [. zset k (k + 1)1 S' ?! u5 y# i- |
]# _5 M5 w+ e" D: w: ?7 w$ p2 G# T8 H
set j (j + 1)
6 C) S( V, H8 j2 i( @- q/ Y' Q]
# D9 q9 T# E0 j7 p6 m# u1 {3 }set note (note *(exp (- (1 / k)))/ k)4 F& ^: v& _1 s  Y
set credibility-list (replace-item i credibility-list note)( l3 Q& E! M0 V; P' n/ Z  z9 r7 R
set i (i + 1)6 J3 M; W0 D& w
]
1 |' C# A  I  h9 E: R1 Z7 b' Q7 E7 |: Bend* C* t: c4 n( h) k* x8 r; D  w

) F3 \+ ^; y$ }to update-global-reputation-list
( x) U/ r+ m+ M2 p/ P; L" llet j 0
  A2 L! C: Z8 N+ ]5 Y5 @1 R' ~while[j < people]1 M) B% @0 x% c0 c
[
% b* Z) b6 i" l3 z, wlet new 0! `1 p) i7 B2 `+ B
;;
暂存新的一个全局声誉7 W6 d/ u" M/ X( G. w
let i 0
7 G6 S, @* Y# Q9 O9 Olet sum-money 0) C9 V( @* B5 B
let credibility-money 0
- F1 n9 `: M' w$ b- {while [i < people]
. T8 S7 e9 p" `1 Q[- X+ g/ u7 B4 M% K' t/ s
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))% G$ Z: N- w3 N! x# \* S
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
; A( E' {, b( j5 ?% d% U1 vset i (i + 1)
3 J  S: X3 k" r0 J3 G$ h8 {]
' O) F+ N" n, a$ F+ klet k 09 J* K( @& X9 i6 O; `
let new1 0
, u$ i, j2 o; w& C  Twhile [k < people]
' a$ B' T  \2 t( N8 ~; l[
9 r5 }" c, T, d8 i/ b: {' M5 b: }. Gset 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): ]2 p+ w4 k. D! m) `. k
set k (k + 1); X! {8 t0 n+ ^( A# m5 S
]! Y/ k* q6 e, @2 i- [
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
9 Q, P% ?, V" G+ hset global-reputation-list (replace-item j global-reputation-list new)' k& u: |) x' k9 ~2 `" a0 k
set j (j + 1)3 r- W9 D" Y6 h
]( {5 w+ G. J5 P" E" f
end- ^0 `" T5 C6 c" X; p
7 W, t! @" @) {8 X

5 N5 u5 p2 J* }: u" c, V& A' N. M5 Y/ n' @/ {# M0 Q
to get-color
! T8 e" N, F4 O4 Y$ l8 }" ?+ s0 ?5 o) a) X
set color blue

1 x* L' X/ T8 G3 _end
) s! g8 m' L% A: u4 e8 ~7 @2 ~% w; z' R4 K+ K0 A( h3 J
to poll-class4 N2 T7 @4 {# F# h9 ^3 _
end
( L# r3 z: Z. W* h7 s4 J5 l
" d& R' H4 F6 J" F+ e; X" o& Ito setup-plot1( C* c! X) p" h$ \/ e" J3 O
: o9 m' ?$ `* [4 S3 g
set-current-plot "Trends-of-Local-reputation"

% |: G4 M& j. l: I; N4 N1 @5 C$ n
! g8 }' X3 o6 R4 B$ [1 Uset-plot-x-range 0 xmax
$ F- r# n2 ~$ e" x3 Q+ [; Y% o

; j' s& J. @7 ^2 bset-plot-y-range 0.0 ymax
1 x# {" B7 b! U) W# d
end" ^/ `+ \) T1 m% f7 y

+ i' E4 f, t1 w1 N, F$ i: j( |to setup-plot2
2 M- v# \) ^& `! Q1 n3 x* j: K# {, Q/ S: ?3 F3 @
set-current-plot "Trends-of-global-reputation"
# r: N* h! }/ _7 ]
5 M) D1 S2 v# h0 ?1 Z3 ^) ]/ O
set-plot-x-range 0 xmax

$ a% F  r' g; \3 m$ f+ H/ A& T: ]; W, b9 W
set-plot-y-range 0.0 ymax

+ C+ t# o4 k* x! s8 X- x, h' Tend
3 M; s4 @1 n, ?* A& U5 u& O/ N6 `) i. z
to setup-plot3
/ l/ W4 f$ }3 d. c- I/ t$ l. t/ v% j) W& D0 o
set-current-plot "Trends-of-credibility"
$ |! r0 O/ r: ?. b* C* m0 S: D3 {
, X9 c" [+ P# R( p- x: ?8 a8 N' B
set-plot-x-range 0 xmax

3 A( `4 Y6 [- `2 M- z% i& ^
; n9 j  y+ w" L- j7 [# c0 Hset-plot-y-range 0.0 ymax
: C: ^: @  D( {# _/ h5 i. c
end$ q: e8 j/ W- V8 x. Y

' V) x+ X; i7 Y. _: cto do-plots, O# C% L* G& B* W8 c6 [
set-current-plot "Trends-of-Local-reputation"7 B6 [8 x" Z( l
set-current-plot-pen "Honest service"
& w" V4 K6 z& |3 ?2 H* Tend
% ^- c' X. F$ X; N. A/ @' W7 c
, X" A+ d: Z( J+ w1 S. O9 J[ 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.
  h" Z1 C$ Z3 U7 z' [9 ]* D: f3 z  A/ d
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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