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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:' {. e- @+ P$ y* T5 M- M) f
to do-business
  ?# x+ V" |( q0 }: G1 B rt random 360
! H6 d3 R3 ~) y fd 1
; O" c$ P. L0 p, J( X ifelse(other turtles-here != nobody)[
+ A0 S8 `" C3 x# ^2 }   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.
: o/ M5 p: W1 a   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ; l8 w$ p, e& g
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
5 H/ @- K- P$ U   set [trade-record-one-len] of self length [trade-record-one] of self! U+ A/ l) o2 a7 ~4 U! ~3 d9 R; K" D
   set trade-record-current( list (timer) (random money-upper-limit))
/ l- g( q' S) ?  q, ?+ _8 f, ?: o- j+ I, p4 Q
问题的提示如下:2 r, c9 o8 v1 t

* F* e, L4 [5 U& ~& Lerror while turtle 50 running OF in procedure DO-BUSINESS, r6 N* d( k$ Z, S
  called by procedure GO
3 x0 k" U  B2 j8 g* xOF expected input to be a turtle agentset or turtle but got NOBODY instead.
5 r0 P; B% \8 u4 l* g5 Y
(halted running of go)9 `& S4 u* n+ ~$ f. U- z: j( V
5 a; ~" o) |1 {$ X1 E! q8 v
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~~
$ W0 V) L# q) J$ c5 T7 _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
9 E6 r: i  O+ r& ^; i' c1 Hglobals[2 N2 T+ Z. U7 i4 Q' {6 ~8 w+ X" P
xmax
( V3 e- X  Z) o9 j0 ]( T& Lymax
* b0 Q$ i6 c  l; c8 h# Xglobal-reputation-list+ z1 `0 O* L1 p5 D6 [9 I" P. v

. L0 x* D+ A$ Z;;
每一个turtle的全局声誉都存在此LIST/ S8 d1 K1 q9 D& ], e: A4 p
credibility-list1 z. L+ k3 t+ \! @" r
;;
每一个turtle的评价可信度
! B. Z* P* H7 \0 thonest-service/ ?7 f( a' P( P3 Q( p
unhonest-service6 `: i: t  P& K1 E3 i
oscillation4 V$ N4 f& W8 y0 g0 _, {; y  D
rand-dynamic/ U* f8 C/ w( ]; L: Y
]
1 H( v% g/ x+ `0 H( K& K5 H1 Z  e8 S7 e
turtles-own[! G( o8 e7 u  |4 Z# V4 m/ @5 L
trade-record-all
* f! k. ]2 w: G- p;;a list of lists,
trade-record-one组成
% J# ~. j6 `" i+ i8 Rtrade-record-one
$ ?$ K& Y& H4 Z  };;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
, i( ^' ]) H0 D% G- S7 ^! ^
1 E& Z# D: `( l0 x;;[
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]]
2 m/ g" u2 s$ ^$ \) e& ctrade-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], v* y% e! }1 X/ j- K; c+ I
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list3 S! E) R7 }* k4 T5 ]
neighbor-total
3 l( n8 q5 ~1 N# I( ^;;
记录该turtle的邻居节点的数目
7 J! W, r. o+ B& a" S/ y$ u$ N) ]trade-time
8 s9 ~) |. M/ R& `1 a. e: ?2 Z;;
当前发生交易的turtle的交易时间& \7 h! }! ^5 S* Y
appraise-give
* t9 O8 y; n8 j) R;;
当前发生交易时给出的评价
9 M! P) y5 {$ l, L- zappraise-receive
: Q: Q! t( e$ J; p% l- V/ d- P;;
当前发生交易时收到的评价6 `; \/ t, i7 p  C
appraise-time( ]7 J3 i' b6 j% z5 G! X+ n
;;
当前发生交易时的评价时间
: }3 C- L  I) K9 vlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉# c' G# ~3 Y" C' O- W4 I
trade-times-total
: P& E( z. ~4 p! d: R8 P;;
与当前turtle的交易总次数
5 T! ]; J4 Z/ ?: w& V& T5 ?% z6 Xtrade-money-total# D7 P" N9 P0 Y- m3 I/ [0 p
;;
与当前turtle的交易总金额+ \( J5 L& t6 \( |
local-reputation+ r) y" W7 C( @6 ?8 D* e
global-reputation
+ c7 B8 r6 x+ fcredibility
2 D8 E" {* n$ i; ?* z$ _;;
评价可信度,每次交易后都需要更新* o5 q% F5 c: Z9 T; \2 T
credibility-all: U1 e' `' |1 l0 @9 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6 h: ~: N5 a0 h6 W5 ?

! H* F8 N4 b& x* ?6 j;;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
9 ^/ I/ N7 k8 k9 Vcredibility-one2 Q! Z: E) F9 m& k# z
;;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people9 S8 k& d9 N, x& Q
global-proportion6 D5 a4 @% }+ `2 C4 ^; Y* L! Y
customer
/ v- u8 v( r* E2 O5 Ucustomer-no
; s" Y3 {( g' B( g: B, ktrust-ok
2 q0 {$ V' ]! x9 q: e8 gtrade-record-one-len;;trade-record-one的长度
9 M- @  Q. G# o. [: N" ?! ]]
9 k2 J, g" B* ~  s& m
* F  F+ H% g( m;;setup procedure
: u& N& [. H- `0 k2 A5 o2 ?9 R4 Q. K3 a* w
to setup! ?, Z  ~/ a9 [2 ?3 i; q+ l% z- n
8 i- E, G5 W/ [
ca

: i( j6 l" \: H: `, ~- y  J' I& H) g" y7 }4 I, H
initialize-settings
! W9 E8 q* P& S# V
9 w: |9 G! N; r
crt people [setup-turtles]
! L7 C& T- V8 n# Q

. p3 l& c0 S* t. ^1 i  [reset-timer
( P( U. R* P  O/ y# I* V: b
; p$ N5 g% q2 k6 e
poll-class

% S4 G. o; ^4 E% ~% r( n5 J: J, \% \, f, }7 b+ ]
setup-plots

, G3 K1 g$ p1 q/ M* i# @, O) \) V. t
do-plots

) C1 j4 d4 s. V& {- A4 m2 ?! Nend
, i# \& |' z1 w* a9 K/ i
9 P3 `& m9 H2 ]8 Dto initialize-settings
; M" `" p9 B/ G$ x  c2 c  y* X) u6 q
set global-reputation-list []
4 B$ `  g. y( k8 S2 I) B! U
- b7 \" X" T* o' l2 F9 U7 X
set credibility-list n-values people [0.5]

' n$ W0 i' A% O
: e, g4 u+ C7 ~7 T$ Tset honest-service 0
. ]3 }2 W. u' ^: m
; `% A# i6 D: h. R  K8 ^
set unhonest-service 0

# A# B( }2 s% V' I: m  _' |# t  n" \0 |% ?" o2 D( ^
set oscillation 0

; [% W9 n7 _/ W/ |& W0 ~" H6 u! V) t1 |, B
set rand-dynamic 0

$ s, }. ?/ H4 q) T  pend
, `5 a; e. R8 U" A1 T, J! x- \8 M2 _/ m8 f) [' ^
to setup-turtles # p/ o  z8 {# T
set shape "person"
6 h. `( P3 J& l& \4 Xsetxy random-xcor random-ycor( n: u# F) P; H! j1 x. _
set trade-record-one []
" h  ]( @; E% `) w- X7 u) _
7 z( T1 k# S$ q7 A& R: e' L
set trade-record-all n-values people [(list (? + 1) 0 0)]   f1 }/ \/ s9 ~! g4 Y- @; b
3 f0 G& `8 r6 O. ]: Z1 G
set trade-record-current []& n. g" d+ U3 a  {1 a  n& h
set credibility-receive []1 Y9 H2 B1 o' A, G0 I
set local-reputation 0.5
2 f$ h" V; U' a. v3 A- ]- qset neighbor-total 0  M, C1 L" y4 H! x8 D+ I1 H
set trade-times-total 08 D* d1 s: F  e9 ~
set trade-money-total 04 P/ `( E9 B! W
set customer nobody1 i. f+ u, ]# j& K' _* T" R- Q0 F& N2 D
set credibility-all n-values people [creat-credibility]/ p" s9 o" k3 o% K# u4 K7 H
set credibility n-values people [-1]3 ?- a. U; S( I  z* {; `1 J: w9 P
get-color7 l6 L" v2 {( r" v2 [  q0 P' q

9 W" f5 H3 b1 V2 y* s& W; }end
# i( c1 T9 }1 X1 F2 P. Q" f& `
2 Y( V3 J7 N  K; f1 L/ ^0 c2 rto-report creat-credibility3 @( i0 j1 B% W$ t# i+ \; z
report n-values people [0.5]" F4 y, x4 X' `- Y3 h
end
9 c5 D1 j* o7 p! J0 v, M8 N% J
- v. u  ]" M6 @' G) [to setup-plots, g, Q9 u3 J) p( ?
" ]& u$ m4 c: P6 B4 U
set xmax 30

& v3 q6 b" S& X$ f2 Q( K! t. l3 i% z: D' `
set ymax 1.0

, e, H" k  }- u; D( T- Z3 l( n0 |% e( [2 v/ Q
clear-all-plots
6 U: S" [! o; [5 n" T& q% n" W
; g( m' D; S7 v+ D5 D
setup-plot1

1 z- `$ ?$ D* ^8 H5 p
( L5 i/ m2 s! M: i4 E+ i, o3 ]setup-plot2
7 i5 r' z. q) p* h0 R/ M
* n( u! `' K4 O, S6 ^0 ]
setup-plot3
/ V9 g9 Q/ g( L# G, |8 h  P
end( V& t/ W9 n) ?5 b: r

) N6 A: w3 a: ];;run time procedures
! q6 m) h5 T4 `4 a1 x& G% C1 b" T9 T8 u& G& ^" S
to go' @- f7 h' K* M7 b, ]
* _/ Z% F* m& r
ask turtles [do-business]

8 d% w  x# v+ P) hend
% Y4 t: ~, g4 X0 o# L0 }: O$ u% k' U+ p+ S, e& z
to do-business 0 p3 B  a3 E1 g8 b

" Z; c+ q  R# q% S5 c* C+ p5 R; H0 O  j7 h1 }
rt random 360
$ ?3 _, O' m) P  {9 U  g0 P

6 h3 K4 i/ X$ H4 @% ~6 gfd 1

( N$ E! |* m6 |3 r0 t8 v% k. }' n8 \( @9 x, J( d' j7 z
ifelse(other turtles-here != nobody)[

( ~" C9 c( E! c2 b
9 B9 Q) V! {- Q* V# R5 }set customer one-of other turtles-here

4 ?$ `* @3 \( H8 `2 \
  e3 E5 z& r7 |( c, K5 X;; set [customer] of customer myself
# r" l" a* r3 Z$ @6 S  M

  u6 _4 O4 `( j( cset [trade-record-one] of self item (([who] of customer) - 1)
2 a# p$ u/ x$ y/ s' G% ][trade-record-all]of self. T  _/ \. `+ h: C, L
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

7 E& S1 J( ?- j3 U* O9 ^9 O! u1 M' C: {& z. a# J$ p7 X% l/ i
set [trade-record-one] of customer item (([who] of self) - 1)+ s/ o3 F- V* }- K- C: e, u
[trade-record-all]of customer

$ R5 l- I+ ~  o) A" e0 `2 {) \" L7 [1 ]+ ~1 |$ s2 C- {
set [trade-record-one-len] of self length [trade-record-one] of self
3 K  Z# C* K  E5 _! s$ }
" U, j& j# D. G* l" Z
set trade-record-current( list (timer) (random money-upper-limit))

  M; g) n2 v7 Q( l5 ^& l3 i" G" ^8 P7 n1 o7 y0 y# x
ask self [do-trust]" \4 F0 g. L3 H
;;
先求ij的信任度3 u1 y- X8 Q( I! x* h) v, W
# A# Q$ n7 |7 H" e; _% B) Q
if ([trust-ok] of self)
/ M! G6 K! v6 D* u% j7 u% j;;
根据ij的信任度来决定是否与j进行交易[) J. y- {4 |2 C) x! D9 n1 ?# @
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
3 W8 P6 ]$ f2 v  w* j( a7 j, Z" W- d) P
[

9 W% ?+ P- u" q, N" K3 ?5 N+ \! T0 a4 |
do-trade

9 g5 R6 W. w$ s+ o2 L' [% }( a, R  N9 |) Y$ B8 ^  u
update-credibility-ijl

* C, [' I7 I- o2 O* _  H; i' z7 b/ r! S& Q; X) ~
update-credibility-list8 H6 X8 x9 @/ J7 u  s

5 `$ l0 r1 m8 J9 B; D  e% v2 z3 D5 J9 U* \
update-global-reputation-list
8 |9 u. N2 ^; S" W

& h& K& G4 u5 _6 e) _+ o& ]poll-class

5 N% g* U2 i7 ?
. X) f; v! v( N( k) kget-color

$ B7 V; l) o% a0 _, w" `$ Y- ]9 ~. k& R% L; {- I2 O- Y5 z: b8 g
]]- h% w" t. \5 W  ?. m, `7 C
  l2 H- D* F$ r
;;
如果所得的信任度满足条件,则进行交易* }  p+ Y" P  B* p: K' ~  g6 k' e

5 \$ S; W3 h1 Y) r6 f5 W7 t6 C[
' l0 r) \% [8 S$ Z  C
  }! E, W) G/ Z9 M; h% w: c, l
rt random 360
$ P9 b- n( @7 w" Z

2 D9 m/ B) E' x! O, cfd 1

8 u$ @$ |1 F8 H7 S$ q, i0 [9 F5 B/ d0 [  O$ f% d9 X
]
2 F5 J6 \# W) G) K! u1 r" [5 ]

$ e; ^: G+ K- c  V* ]6 n! H. l; `end
/ S5 j$ `5 _6 n4 t! u* g* E0 ?2 T

; [( U2 g& V; f7 h$ |2 mto do-trust ; C& d3 X+ x+ R1 \
set trust-ok False5 g% ~. t- p. r- l5 _3 E

3 r3 D0 r. o# t
7 o0 p5 U1 L) Z( v; Z+ |6 M. C/ R
let max-trade-times 0
# a- ]. X: g& y5 P/ Lforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
  i' T- _9 r# s7 Z+ i5 p: ?- P+ \let max-trade-money 02 i/ T4 x3 a) @% t% y5 w
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]+ w$ N& d  e8 O+ o! {. F3 Y
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))6 [2 q1 e/ h8 j1 L. f6 j* I
: g# K6 |- ~: f

$ `9 [9 s- C  f) @6 Y. {9 ^get-global-proportion
4 w4 R" d6 d3 S6 h5 Alet trust-value) `* _- ]+ g+ H: 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)

; h6 a+ G/ \, S# Gif(trust-value > trade-trust-value)& N; ?, A. M; A8 z0 A( `8 o5 b6 K
[set trust-ok true]# u+ U/ b: t& [$ @9 i& R
end/ F( @3 F: {' K/ J0 g5 O4 ~+ f
( D0 F* L# ~. l. c. {9 W- a! K
to get-global-proportion
* l) g% F$ E/ b; gifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
5 z% z/ ?& {; {& q) R: _[set global-proportion 0]
8 j0 I/ K& X7 _( u5 f[let i 02 ~, J% Y/ n$ h* a
let sum-money 0
  j( _1 K2 l. ^# E0 _2 ]while[ i < people]& Z: J! i# P" K6 K9 D
[3 G6 V1 B) x* ?- `9 U) |
if( length (item i8 j* [) Z  v/ k/ O6 z4 T7 L+ M
[trade-record-all] of customer) > 3 )
! a9 v5 O; p- V9 E. n! F! G
[& c5 m& ?) s, u8 l
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
, m9 ^- d8 N9 [! O]
; s# C  ^  p- d- ]$ P/ _]9 k' p- s% B" E+ u# V/ K5 t: \0 m
let j 0
0 w. ^4 d* o/ Y' Qlet note 0
$ o# x) w9 M% U" B& Ywhile[ j < people]5 A# `$ |: \2 Q8 j9 ^* [: r
[
+ u' Q! I. r1 r1 k4 lif( length (item i8 V) t( c, D* u
[trade-record-all] of customer) > 3 )

: g1 v: I5 ~1 X- {' X[
' |; q! g" |3 G) _5 L/ c* U6 kifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)) L2 E; D+ i( N# N; r$ ^/ Q
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]% ?' r! X/ R3 e  }5 ]
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]( i3 E* E# }% u# Y0 }/ g& ?
]
! ]$ F% ^" X+ E0 r0 A]( s$ A- Y5 W+ `+ g
set global-proportion note
* a  f5 S% |; ?& x]
3 I4 U/ [- j$ ^7 Iend- j/ x: h  x! b) }: |
  z  E) \1 \7 V  J# L; |: ]! y( p0 F
to do-trade3 ]: L! ]1 @. _8 a- m
;;
这个过程实际上是给双方作出评价的过程1 `2 y* M2 N% J( R
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( u! K+ w0 j. D6 eset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价, y) ]# F* S! V
set trade-record-current lput(timer) trade-record-current3 o& x& ~2 f% T( R: L: }# }
;;
评价时间/ E" [5 F1 ]) ~6 N7 K6 n
ask myself [% |+ m  o. g8 j, \7 _( U- i2 c7 I
update-local-reputation8 H+ O- t. u& O* Q
set trade-record-current lput([local-reputation] of myself) trade-record-current
$ b. P3 A  W( }& u4 }6 A3 Q! s]1 ^/ }" y5 O* o: Q, D1 l- `
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself6 B! f8 Y5 I, b$ b* `3 J# J% a
;;
将此次交易的记录加入到trade-record-one" d! [+ B/ l" t
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
' H* Z, Z) F0 {; R( J/ nlet note (item 2 trade-record-current )3 G& L9 H( s  F2 o. j; s2 t# \6 H
set trade-record-current7 D4 k! W) c) v2 `+ Y3 N5 d
(replace-item 2 trade-record-current (item 3 trade-record-current))
8 r# w9 {& X: G9 G3 y3 v  h. Y
set trade-record-current1 h: C2 u' x* J2 u
(replace-item 3 trade-record-current note): Q: ~$ ?6 h; a4 F9 z+ q8 v2 E

7 i9 A, l0 i7 u7 r/ Y1 ^- g
' t* h4 R% M! l% V) [+ ?
ask customer [
2 B$ b, `( }: v( M- A- _5 R3 Gupdate-local-reputation7 ?' j9 b: U1 M2 r
set trade-record-current, |1 d6 z* A) n, x( C6 }
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
+ s( M4 [9 j& p) B1 {
]( G) }# N- S8 l. p  U

$ ~8 \. E6 v( R5 W8 \" F, d& \; X

" H; b9 q; J& U0 g* F! m- |0 Yset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer: N5 m8 G  }8 n5 O! \( T
) X& R/ x& x2 e8 N# s# O- Q6 Y2 @
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
* Z3 o  L! J8 \! m;;
将此次交易的记录加入到customertrade-record-all/ B4 [9 u0 H; ~! c3 S: K+ S3 u6 x
end
0 O) {5 B- A& R! l" h7 Z; v2 k! F4 d+ q8 i
to update-local-reputation
# u) |/ [( v) S6 zset [trade-record-one-len] of myself length [trade-record-one] of myself
" Y$ z! [& N% h* L+ E2 F2 M5 @) |1 N) }8 J4 a  z
( k3 P  ?, }; [2 v& a
;;if [trade-record-one-len] of myself > 3

, `& w9 ]& I& I) Bupdate-neighbor-total
3 I9 S8 p6 _5 ]$ @;;
更新邻居节点的数目,在此进行9 p. c8 H$ U/ O$ K4 C$ }; n" C
let i 3! G0 D  K' H0 e! y# J" l! G9 [1 P
let sum-time 0
' K$ }. z. ~+ i" X, d# B; r8 t$ @while[i < [trade-record-one-len] of myself]& p  r3 n" r% `$ f- o9 Q' s/ \
[
$ |8 J5 b$ O6 O/ y( _( e, d) ?7 Iset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
, D2 R# L5 U6 T, Uset i+ p! H$ r: M( F8 ]5 Z2 d: a9 S
( i + 1)

2 _) }& u- ~' H" l/ z8 N]+ F/ Y2 J1 R, N, k* K+ }
let j 3
* E# m8 I8 y; u. z( hlet sum-money 0* i- A4 z; p& m. r% t. s
while[j < [trade-record-one-len] of myself]
5 C  K5 [7 l. Q* v5 d. D0 p" P[% n- v: m4 H: q* L
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)7 H! \% a4 k( A6 E
set j0 L/ D( {: |% p2 a
( j + 1)

, V  T5 |7 Z2 i]& N# _% Z# e1 E5 d) Z
let k 3# a5 S% b3 z/ m7 n
let power 0
; q7 w7 ^6 I( ^$ S: rlet local 0% Y6 u" o& m+ y' Q
while [k <[trade-record-one-len] of myself]
3 x4 u" o( x2 d" h0 F[! ?! @: Q# G" y8 Z) p' E
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$ ^7 r* G* F- c. l" x. A( D+ B
set k (k + 1)
# {8 {# O/ g0 |0 ~1 f0 x]  I0 N# U3 k3 r3 z. P
set [local-reputation] of myself (local): u- q# L. _# q8 T9 v
end2 s6 W1 E0 f% X5 X
, B2 z, V. Z" d" P% z& i8 T
to update-neighbor-total
" |2 ?% T+ r  j6 e% ^. Q6 g  r" S+ b  x
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
+ [2 P% ?  F8 }% a2 S  e
! Z1 m5 e2 M: v9 o: e' }6 o

* u  ]' a8 g& P  rend
: }8 F& \# ]8 O# J  B
- H0 Z: T) K" b0 ]7 d5 oto update-credibility-ijl
4 z7 ?% {; B' g) v* h) R. E, I8 `
  r' @3 a% v8 u. J% V6 Q2 P( h;;
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。
' R/ U) P; h& plet l 0
* N  Z3 @+ ~, b/ awhile[ l < people ]! P! m5 T; i! Z' @2 G  h3 J
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价- X  G! ]# i- @1 f8 l8 s5 x% Y
[% X  A; ?* l4 d
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
9 Z' E8 O3 k3 Uif (trade-record-one-j-l-len > 3)4 R, f; Q) q7 R* x5 a9 n% j0 f0 L
[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
8 {5 K; r3 ^3 h& ?- m" Q0 \5 dlet i 3( p4 T+ s8 N2 Q* ]( v$ O  X
let sum-time 0. c5 R) L+ p- s, s$ F8 t+ \
while[i < trade-record-one-len]
4 f8 G2 A$ H) }: U; w[, C$ a0 |# I. g. ?7 j
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )% k% C& d5 ~) B' E* K3 t
set i
4 F3 n/ Z/ |# s( i + 1)

" K  f3 t3 p) |9 @]+ l) e- t& M& Z5 _4 F
let credibility-i-j-l 0
' N+ ^8 Z+ t- d;;i
评价(jjl的评价)
# A7 u; }5 n3 S) n. _5 ylet j 38 [8 m* z. s' G# Y! S, A' w# c
let k 4
! w! i0 u* E- Z6 Hwhile[j < trade-record-one-len]4 q  r/ a  K6 Z
[8 T5 d8 m/ ~2 Q) o
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/ }/ v+ n. q+ x( a' w! b" y
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)6 T7 y: ~5 {" v/ M4 E
set j
7 ?4 {! p2 w5 W4 k+ B' ?( j + 1)
* m9 v0 s8 R3 U! ?
]/ Y; i- J& z% Z: a
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 ))3 V0 A9 H. b. J7 s& J
( d0 O; [6 j5 G% y/ c" R. T" q3 r

" @; b/ H6 P7 Y% u$ Llet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))0 D$ T! _6 V$ N5 J- @
;;
及时更新il的评价质量的评价
+ l$ h! t- ^" Mset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
7 g5 ]& N) z5 `set l (l + 1)
; [6 P' S: L, _) P; z" X]
/ t" h: ]) X" c7 D6 j$ s/ Gend
/ y) r' f" Z9 b: e, J* c* q  p( b5 s! d, A" o( O- w
to update-credibility-list5 r& R1 M. X' s7 z8 `" H, Y# {
let i 0
. A; R& q, i1 _7 X- s* Uwhile[i < people]
  r9 I+ T3 I  X) w[( f7 k; j/ Y8 F' t* \
let j 0
: i  d4 A& T/ e+ m2 V+ p. {, Mlet note 0" \' }! ?$ M+ |: a% B
let k 0
% t' x( l" M6 x& x0 Q, n- v;;
计作出过评价的邻居节点的数目) A1 X6 D8 B& R) ?2 B
while[j < people]$ K: t/ K+ u( k& q' G+ x/ [
[
1 G: B* c/ ~, U: d" G6 T& zif (item j( [credibility] of turtle (i + 1)) != -1)
  ^) b8 z1 a$ H: F+ W5 q$ O;;
判断是否给本turtle的评价质量做出过评价的节点
6 g. s$ B( E. d+ Y[set note (note + item j ([credibility]of turtle (i + 1)))
1 a6 S- m4 X# v4 v;;*(exp (-(people - 2)))/(people - 2))]

1 I  V# c0 @/ S/ x% Bset k (k + 1)$ `& s& ^" B7 d, |9 N
]
& S" y. |, b% q$ n* m2 [set j (j + 1)
3 e/ F. a) ]- D/ I/ X1 ?" m]+ F1 Z9 N( n; Q! m
set note (note *(exp (- (1 / k)))/ k)2 o# ^+ O$ T& a! L
set credibility-list (replace-item i credibility-list note)6 x) H; Z  Z  Q# Z2 l, V8 v4 S4 A
set i (i + 1)' S, k4 ^7 C: k, Q% q
]$ E, L/ I) d3 s3 w, @" T8 B
end
0 ^3 c5 a: @9 m" ^3 U# G% B( ^( b) a, d3 W
to update-global-reputation-list
( B( \* o$ s% [9 X; m* ~" }. U# Alet j 0
$ k4 i& r& s0 V6 a; l& mwhile[j < people]: b3 [; O  R" G/ E  P! a
[* [( O* U* R" h, |* a- J- Q
let new 01 Y4 ^: W* i  e4 ^- F
;;
暂存新的一个全局声誉1 x% X; \! ^5 o2 k! K5 A2 i
let i 0( b0 {6 x  G1 t8 U3 z* h
let sum-money 0
( w. d) X0 ?7 b' clet credibility-money 07 K4 F, f8 D5 ~! g3 I: [' s
while [i < people]" @5 C5 G6 t6 X3 q/ h- Y( t0 O$ c
[
7 v  S. M1 P' j; V* e1 Xset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))& O+ ?0 j$ _9 _: g# ?1 g" k
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
8 J0 k* Z8 r% v  @2 A) @7 xset i (i + 1)( H3 T# e, i5 S! j6 Y, }  u
]
% _. A( r0 j  f1 K4 y# @" t0 J( |let k 08 l* ^5 _1 ?7 `# S) V& ?
let new1 0
/ M. m9 N* ]- a0 o) Swhile [k < people]
/ ]# e) A& r7 y* g" O! V[8 M0 b  `1 Z6 j% k; s  Z) z; e
set 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)
! d- e' o5 g9 P- d5 F6 _2 `set k (k + 1)5 O5 l: F9 e* q  {! {
]  k; ~" R$ d' ~. g. X" e: y
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
# j8 ^7 A2 Y* d+ @' I; Vset global-reputation-list (replace-item j global-reputation-list new)
' i" u5 C6 P3 pset j (j + 1)0 g4 |- w) S; P1 `3 B0 ^
]
5 v" C5 X" H( p& y4 \7 Nend
. X/ V/ Q5 ^- @
5 b5 D$ c5 T0 k0 M! s+ s1 S
; l) P% |# a$ Q6 O/ ^+ T
  y% c' w, L1 p" r4 uto get-color
* _1 P- V  k9 Y3 q0 s+ ^1 c% ?  e0 M" c5 J5 K8 t+ G# y( Y% D2 R
set color blue
1 d9 Y' w. G1 I7 G7 M
end
5 l$ `$ s! {- V! r: X% D
/ V2 p' v# [9 f0 s! R: e9 Vto poll-class! f# e1 j* `' Y) Y0 ?  ?% s
end8 u3 @3 @7 I" b8 y3 c9 D5 V
1 a- u# J; i% y9 i
to setup-plot1! \! K( x# a/ B; v" V  _: u

* u3 J* Y  p) l2 @. aset-current-plot "Trends-of-Local-reputation"

9 J2 R/ A5 m% _; ]+ C+ k: Y! h. c/ t8 a1 p
set-plot-x-range 0 xmax

4 U# e3 y& X1 o' K1 ]% p2 `. O8 ?! N! A, N. l5 Y. ?0 _& J
set-plot-y-range 0.0 ymax
! N9 C1 C  S; E1 v* D1 c% ~  z
end# _; @2 K2 R0 a+ Q
9 p3 K3 M% F5 z2 W- n
to setup-plot2) t6 S7 {6 F! k0 T: {

, [" Z6 i) F; O  q0 rset-current-plot "Trends-of-global-reputation"
8 {6 P" U3 T! u0 E. j
/ U! J) Q: o: d0 Y* c
set-plot-x-range 0 xmax

% `% {' j+ _! M* p) l9 }
8 N5 ^; b0 Y4 ]6 k+ f/ w* V0 Zset-plot-y-range 0.0 ymax
; I. P' Y; `7 p
end
1 R, E' ?0 H1 F6 u& T/ D3 s  W
- {+ j7 E+ h) I2 N/ k7 w, o6 V5 Fto setup-plot3
/ a7 \8 S, G: @4 N& `2 A5 `1 }. q. b+ l& W5 d
set-current-plot "Trends-of-credibility"

8 W0 K# z  M$ d8 _: j1 T: T! @# L
set-plot-x-range 0 xmax

* L$ e- G2 j8 d
( C- W" [. ~3 P' r- iset-plot-y-range 0.0 ymax

3 N4 q, C* J+ z6 O5 e2 Zend0 d8 {8 b4 D3 B/ C1 v! t

% I# b5 ?- Q! N" v3 x9 }0 T- G4 C) |' Xto do-plots
4 Y: F+ E" k$ L! j1 Iset-current-plot "Trends-of-Local-reputation"
3 r. }4 \( s, Q2 M9 S. s, c# Cset-current-plot-pen "Honest service"
0 U, U, f; ^  y( i+ g( G! \7 eend
8 k5 s0 }! @7 T; N5 D/ u0 H1 ?- r' S* ^0 P
[ 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." F9 T( \( u$ ^+ r0 b  C8 h. ?* x
0 u0 _5 K% v2 w% E+ b# m* p* G
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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