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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:# X: \, L5 Y8 Y2 |7 x3 i
to do-business 1 M/ T6 V, H9 G# D0 M
rt random 360+ ], {8 ]; \, B
fd 1  t& b4 b3 M' I9 g, s
ifelse(other turtles-here != nobody)[
9 J! t% |2 K9 [( e9 ?) h5 Z   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.  a' R8 f0 b$ A- r8 i9 p* i
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    . s1 j- V4 b. P$ h+ b% C
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
6 k6 c3 k  x$ g   set [trade-record-one-len] of self length [trade-record-one] of self
! M) l% R9 Q* l  @8 g+ C# m& S   set trade-record-current( list (timer) (random money-upper-limit))
& D6 i; Z5 b5 J  h9 y0 b  }1 H- \! R0 [2 H6 X$ Z) P6 l
问题的提示如下:
2 D6 R) J. {3 R9 _  j
! }) ^, x. t  ^- B+ p. Merror while turtle 50 running OF in procedure DO-BUSINESS1 I- @( ?( _2 S
  called by procedure GO) H1 B/ G$ _/ Y0 E+ e
OF expected input to be a turtle agentset or turtle but got NOBODY instead./ C, v* q2 o5 a1 ?) r  F' K0 R
(halted running of go)
/ L9 B- H2 _( \$ M! l" x) M. d; O# D$ n* G7 h. l2 [
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 y5 |, M  B2 }. v7 ?( v! [" J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) k; P& s4 G) ^7 J+ v) l
globals[
- p/ n- d& g7 C  N0 h% j! W0 X) Z9 Sxmax' }  W- f! B: f/ z# K' ?3 b/ A
ymax
1 }2 _8 d4 H5 T9 H0 xglobal-reputation-list, C+ d6 J8 Q  n" g

- H( K7 i+ l- C' G8 };;
每一个turtle的全局声誉都存在此LIST
$ p: b9 W/ F! N2 _" Mcredibility-list
6 n( Z  @4 a5 w' m;;
每一个turtle的评价可信度
+ I/ g& R' o9 j8 n( Ehonest-service4 _7 d  k; b& ^/ j
unhonest-service
, \- F& g$ P6 H! h& `oscillation
4 t/ v* C3 j  o: S: X3 Y1 H5 [rand-dynamic
- i+ _8 c1 [; q. H/ U8 R]( x8 H0 K- N2 f/ C- |5 }
' C" M6 M, r+ ]' @5 Z0 J$ i3 ~: S
turtles-own[
2 _! J8 L0 K) R4 W8 K4 ftrade-record-all! X& A! Z; W& e8 b
;;a list of lists,
trade-record-one组成
" g, k7 A+ R" G7 X; D2 O& h8 R5 R$ }trade-record-one9 Q9 U9 e8 g8 N) I  {' B  [% @. E" ]
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
  o( ~4 J0 O% {3 e, m7 w  t" c- y: C' {- M4 }! ^
;;[
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]]
$ k, r; {+ g0 p" ?% @" btrade-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]& Q/ p/ {( n2 [6 o2 d5 D+ e
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
, Z7 y; @: ?+ N- hneighbor-total0 ?* @% m& z9 b( q% z6 w9 T
;;
记录该turtle的邻居节点的数目
5 ]; p  f8 R: Y1 @, `' b& Ltrade-time
1 E1 Q( ~0 J, u# q( M; J;;
当前发生交易的turtle的交易时间
2 x! R0 s6 ]0 O3 pappraise-give
! O4 B% B# S+ `; T. @;;
当前发生交易时给出的评价
# z) ]" {# ~/ {0 h5 i, W/ Oappraise-receive( Z/ Q' x# X. l3 E
;;
当前发生交易时收到的评价
" ]% ]/ F4 d" r4 }/ N8 v2 t/ P" C. D. sappraise-time" D0 H0 R% i9 r1 T3 k2 h% C: P8 @
;;
当前发生交易时的评价时间3 h# ]+ J: ^' w
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
6 I. s% ]# o' R) y/ [, _trade-times-total( t: j& V6 L8 p
;;
与当前turtle的交易总次数
7 T" ?( S; n/ Z. W) v) utrade-money-total
; j$ `8 q$ R# h& r/ u;;
与当前turtle的交易总金额
4 @% |% x. A  y. l0 Elocal-reputation
, E# A  E$ l! \global-reputation
3 F% X8 Y( S2 W; R! Tcredibility2 O3 x/ n5 ?9 Z: w
;;
评价可信度,每次交易后都需要更新1 Q3 I3 O# F( U
credibility-all) D: a- s. x1 j; q1 g& 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
0 I& Z: y7 I" C5 i$ m3 D2 n2 M! A7 o, H* y( p
;;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
! N& ^6 j; |+ l5 e: c) Zcredibility-one6 G% y$ |2 a# 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
/ x- o  ]% P, C+ d, ]1 lglobal-proportion
+ c$ h# i& ~9 s- e5 `& `* Acustomer1 \& U5 n# ~% O- J2 ]8 J
customer-no# L5 }/ k: G2 C, F
trust-ok0 d! k/ K  D3 s3 e$ G
trade-record-one-len;;trade-record-one的长度
6 _* M! {+ Z. @/ X/ j! Z]
0 j! P, o8 R: f- P' E. L
$ G- ]+ f/ i7 D4 y, b# f0 L, ^$ q;;setup procedure
" I+ k2 p' O/ {) r& d* e& @# l6 H+ i. o6 {" [9 f2 s3 M2 ~
to setup) k0 A" m/ G2 K

; @/ S* [0 g3 y  P; Kca
% b2 d% s, O1 ^2 _# ^7 C% y
) H1 i( n( s/ F/ N, A* o
initialize-settings

1 I$ y4 g) G4 k  C( W$ m, d
' T5 D& ^8 m6 Y+ Q1 B9 B! ~6 W, rcrt people [setup-turtles]

& E- p+ {& z3 l- Z" ?" ~1 Y5 K! l4 c
reset-timer
$ D- `  [! z1 G2 E

3 K% U: G6 y! I/ {poll-class

7 `9 k  i- g- h; `, u
/ M) x1 I7 Y3 O: o5 Osetup-plots
  z  z) v( y( X" J& X7 n
' k: x( l  r. z$ w8 k" |8 e4 f$ S2 t
do-plots

! H( c7 {) b: i9 v  Xend7 a* p8 G0 g6 K. W, w9 G
8 u! i. d0 ]- \" Z" D/ t
to initialize-settings
/ d* o9 x: o( ]% Q# ]& K  U$ Z2 A% w) W
set global-reputation-list []
' M  H+ T# g, K6 q4 m

" d2 ?  M, X9 J0 t; T* v' S. n2 dset credibility-list n-values people [0.5]
: u* D5 D# _$ @8 R

$ P& ~: W) n! t+ C; M" oset honest-service 0

9 ]% b4 h, d9 I0 q; A0 O
3 j5 T: Y: e1 h8 o" b% e& Zset unhonest-service 0

6 V0 r; Q8 ~7 |  p; m; P5 |; W
9 f$ ?, W9 h/ pset oscillation 0
5 e* H% I( M4 O& I, L# d

% C4 z. k4 n3 p* I8 Oset rand-dynamic 0
9 M- ?( b+ f3 o6 t
end
( _+ Y' S  ], G) X' n( w" b  x# @, E/ Z) G' l2 l# [
to setup-turtles
  i. k4 p% X& d7 T, cset shape "person"+ t  R  K; s+ _3 b8 p' p! C0 w
setxy random-xcor random-ycor
& l! c" y- r/ B0 fset trade-record-one []
8 @8 v3 @5 w6 u, i

, S. f$ u1 Z+ w$ T- `0 }9 fset trade-record-all n-values people [(list (? + 1) 0 0)] 6 I9 F7 h) J! @' ^/ i3 M

* q. W( r' B& z' z. o( s* f$ tset trade-record-current []# }" I2 P2 x9 a& z1 v& f
set credibility-receive []# i5 \. ~% z7 P
set local-reputation 0.5
+ D+ x% B8 I4 j* r6 _set neighbor-total 0  k. C1 f, J" n, y  Y, F( [' }; f
set trade-times-total 0
  h% ~0 C6 r8 h2 |1 E- }set trade-money-total 0
& y2 \: H& j# z# X* x& Oset customer nobody
2 A$ |3 ?- x' K8 P# g4 [set credibility-all n-values people [creat-credibility]
# |4 ]: c! |( Wset credibility n-values people [-1]
# @9 \+ ^& m# S  h2 n5 uget-color
; M! m+ S; ^4 m) ?. Y2 R1 \
* o9 K$ _# h3 J" }; V
end
9 \' n3 F6 r2 ?7 j1 S; g  o! Y# w
& y% Y$ N, @5 ]9 V. L+ f' \) vto-report creat-credibility
- w! s" p8 G; w2 _" ~2 f: w) xreport n-values people [0.5]' l; Z# j3 `$ u! ~- N% _% z: G
end6 q$ N! g4 f# p  f
) }) B- d/ c. I4 \# h, P
to setup-plots" z0 r' n: n; U
2 t4 b4 r% F' i* H+ H) E; O
set xmax 30
. P% O( r* s% H
; T+ g1 r/ z8 u1 h
set ymax 1.0
9 Y3 M/ x% e' t4 ?$ G6 ~

  b, D/ J( h" d4 H" i+ Gclear-all-plots
- H0 q0 |, e: P/ W& d% P5 C2 S
  t0 ^$ U% ?  v  Y3 B2 B' d, X' G
setup-plot1

+ r  p* O) D0 a  V' n6 q4 N' ~7 A6 x/ \1 F$ `
setup-plot2
" r: h; M8 ~0 W0 T. V$ q' |+ y; X
4 ]% B% {5 d+ y9 q
setup-plot3
$ |" F" x! g* H  G: n' M
end3 W4 d8 W  @0 M0 `, U0 C

, c8 {' }1 @( Z) h;;run time procedures( o# A4 `! {6 E$ M) B9 \' F

9 g& v. q8 K: a* Wto go
9 ]6 x7 c* n$ L  s" P' e' |4 A" w2 O
# {# h, z  ?9 E0 u: G' x2 ^ask turtles [do-business]

: R4 E8 I! N: }. }/ ?+ wend
2 \1 |+ N) Q9 b6 q+ E& u7 V
# T9 {$ g# T% S) W/ T* t; }8 Mto do-business ' o" K* l8 u# l, h8 ?
; @9 A9 T, t1 Y$ _3 Y0 ?

9 {; _  P4 c& irt random 360

$ G+ o/ `6 w( ?4 B- U
9 H3 {+ r8 @; G! a% Efd 1
# H- a+ @) @6 |

' l% P+ x) k$ h: c, M. Q) H  pifelse(other turtles-here != nobody)[

3 N- F( g8 q5 G/ L, g$ J  r
; H! `/ g& H2 w( B& N$ gset customer one-of other turtles-here
- Q, t- _6 C/ I5 W# h; }8 X& U! z

9 d) G$ Y8 c- H# C# G5 Z, v) B1 J;; set [customer] of customer myself
% {( V5 t. D' n# i( w9 k. |

) U) D# U3 M4 Vset [trade-record-one] of self item (([who] of customer) - 1)( s1 Y4 @% A! v" m- d* [! V
[trade-record-all]of self5 |7 Q( }$ [) T
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
" G. T( L6 }! {1 F9 n9 P' N+ [

; C) z# J. v2 r* r5 H4 u/ `set [trade-record-one] of customer item (([who] of self) - 1)# M8 [- [; S* [  q2 k4 o/ n
[trade-record-all]of customer

4 b$ i9 U* S4 [  c  h: z2 u- y) U2 j
set [trade-record-one-len] of self length [trade-record-one] of self
2 _) T% @4 D7 X( A; R

/ X1 z* Z) M) vset trade-record-current( list (timer) (random money-upper-limit))

' J: ?7 ^5 x: a% p5 o  A0 j1 v3 a6 P* {( u1 U8 e
ask self [do-trust]: F8 ~# q  @% R) W! B9 O) L6 n
;;
先求ij的信任度
% h4 {/ j9 e  z2 Z2 P
& [( I6 G  r3 Y' Cif ([trust-ok] of self)
$ Q6 l. j$ ]; Z6 W( I; a9 o& l;;
根据ij的信任度来决定是否与j进行交易[3 x! z# V: B9 I: P% S/ _% O
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself. Z/ Y( U( e( U* q

7 Z/ H7 G0 p3 q5 V% o( C+ ][

$ N1 ^% t2 V/ U, g5 e5 C& |& t+ R+ f9 d9 K9 ?* O3 w' ^7 G
do-trade
! \. d* Q, f8 H- u# i1 |

7 l7 b7 [* D* t( {2 Z$ {# Hupdate-credibility-ijl

# q# T. N$ C) o  _6 l/ w
1 Q, Y* L; s7 J8 ~2 a* p: Cupdate-credibility-list
# B1 {7 \# B9 u& o; B* v
) q9 r$ E+ l- C$ ^& s; n! `
+ F9 V% Q" O, q! R! Q1 @
update-global-reputation-list

9 o4 H2 ]" u) B+ p
5 S- P# Z! F' V# A5 t% \5 upoll-class

" `5 a+ Z" n# f8 Q+ p7 a+ ?: H
* l7 H, B5 L2 n: t4 ^. P! jget-color
7 L/ o9 X  C8 v8 r, M$ Q

6 `  U! h' w& j# ^$ N" N]]
, Q6 X) L& M  S: `: ~& L5 d+ l3 g: X! P% \
;;
如果所得的信任度满足条件,则进行交易  l2 F( A7 Z- p3 s' S1 u; s
; z0 R, D/ s9 O( m; c
[

( g% x$ }) m! x% x
. g7 G7 c- G2 Y5 K1 Q1 crt random 360
$ T1 E, d5 f" ?# H# m: X3 }5 d/ c
8 x; n, n3 N. q8 a' m% e; A$ M# q
fd 1
4 m' J) ]! ~- u! K

; r' q0 Z' b) v. ?5 e+ s$ g]

6 J' N! R. x/ t: A# I; P* Z5 G
, b5 D5 K5 M8 A% f' B2 ^end

& t. w/ _4 [$ l! H- z$ u1 n) W# q- K  z. o' H/ R. q& M8 L
to do-trust ' I8 ], B3 j% t. ~
set trust-ok False) }' G: L% J( b8 I" k5 N# p
: `- H  |- T" B, U
# u7 P% E# v- |/ j: b
let max-trade-times 0" n2 [7 F) |& q8 n5 |' T' K1 N8 n
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
: X$ R. v( Y, blet max-trade-money 0$ g! I9 }# k3 u3 u1 I: n
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
  T/ J- X0 G4 W3 c$ n/ _let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))% N. v% B5 e0 [5 o5 w" s) |

/ x9 B: j3 J4 Z# S- x* W1 }& {
: [' D7 S2 s7 ~2 Q: S/ a
get-global-proportion1 h$ X; x7 L1 w/ N5 I% Y
let trust-value
* s/ \, w" S6 Z7 `8 Mlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

  ~/ Z: q$ i- l& u0 xif(trust-value > trade-trust-value)
5 b; c" A8 E( ~[set trust-ok true]; n; [6 W# b0 @4 y' a- j/ ^
end+ l0 L2 O, k4 M) V
$ b/ W$ ?4 B- }2 h% N$ |
to get-global-proportion3 K1 ?# z0 u' Y& k0 W8 x
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)8 E9 N7 v+ N- N( L3 W! ]; V3 k" A
[set global-proportion 0]" W5 T( W, x5 n" o
[let i 09 Y: H, y: s7 Z- R
let sum-money 03 ~; |7 I  r4 b* t& j/ s6 k4 n. k
while[ i < people]* E( }, E; B! A+ w! c# M$ g
[8 K1 a% v4 s1 O$ u: D2 R
if( length (item i
5 m# C) p* t- @1 I[trade-record-all] of customer) > 3 )
" L! @* o) i/ f+ J
[
( Y+ Q& l: T3 ~  w  }set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
2 |) }: w  D2 Z3 t5 R! U]& Z8 ^% N4 q3 _. H
]
( k0 ~/ H+ n" U/ G5 c5 Rlet j 0
2 h0 k) [& R' c; j/ i; C4 slet note 0
% D# @2 m, M& B/ W4 s4 Lwhile[ j < people]9 w: v8 I* R! Y4 J7 H
[4 F2 O; r! J7 F* Q9 N% l
if( length (item i
  |% X7 k/ p- @3 D[trade-record-all] of customer) > 3 )
+ g0 }) A9 a6 W$ u
[
0 ~' N' u3 S1 ?ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
$ H5 e. p' V2 ][set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
+ J5 @; G$ I: c. y/ a[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
# e3 m2 j' c# m& Q]
$ P' F+ w8 b3 E]
% ?+ B4 F5 c# F4 {7 _set global-proportion note& G1 b. S2 l- c  Q) A: o8 o1 I* t
]7 p+ b5 q- \4 y8 I% E
end
9 Z1 x4 D6 F( \4 X7 T5 g# ?" u8 a3 L$ B4 a3 s# o7 b
to do-trade9 P  y) e1 c+ L  N
;;
这个过程实际上是给双方作出评价的过程- a; r  m# ~% N* `4 q/ q
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
7 |% y" [/ ?1 J- g& a& h* b7 Z& tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
7 p! l& G, N9 m  n4 e2 Gset trade-record-current lput(timer) trade-record-current
3 J; j1 Q1 H/ @;;
评价时间+ D- M& K9 ]) x4 v# @
ask myself [
6 A# p) q! I3 `8 A9 Gupdate-local-reputation
9 U# y& E$ S8 {set trade-record-current lput([local-reputation] of myself) trade-record-current& b5 ]! G- {. ~6 w0 ]! `7 {
]1 g) ]+ i( P" o; f, f8 P
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
* A7 b9 T; S0 f! w; C# f5 l2 {) `; E;;
将此次交易的记录加入到trade-record-one
2 f5 R) N  a; S! ~  i0 J" p) Uset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)$ h9 }- S( e! k4 s
let note (item 2 trade-record-current )
- Q4 U9 H# N, L+ M. l2 V- R- v' sset trade-record-current
$ |6 H; }- |- Y: a; c(replace-item 2 trade-record-current (item 3 trade-record-current))
* @) I' Z! K% _) ^) j
set trade-record-current/ m9 O% p( Y- V; H) n/ [
(replace-item 3 trade-record-current note)
3 n* n4 B9 a& \4 c7 `
4 b6 c! v, w  e1 m! t5 K

2 j8 j  L9 \0 C( B1 uask customer [8 |0 l# M; i- y0 |0 z( n* h
update-local-reputation9 Z/ ?8 F$ C! s5 O+ }
set trade-record-current9 K1 R" I& x" O+ n- j# j- N
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
5 W$ W3 A) e: g+ g; F. R/ Y& d3 ?
]6 d1 U1 c" x2 f

  b8 C/ @7 T  a# E! i  s
: l  j1 b+ V  X5 `" t
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer& ?1 p4 m3 _5 t& q
' K( R- |$ y- V6 M% a3 s6 S
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
) y; i  E3 z2 h1 I, S0 l% \; N;;
将此次交易的记录加入到customertrade-record-all
; N, ]! M8 |: J$ E# q  W0 ~+ I/ Nend
2 x& ^( V) h" Y; j8 Y
. b, H6 p; o2 s4 w5 X# Kto update-local-reputation
7 i' G2 ?1 t, w% W8 Gset [trade-record-one-len] of myself length [trade-record-one] of myself5 z1 i! S! Y; a, h- j. y4 C
" J' l, ~( ?0 H+ R

% e* W7 O4 P# {; L;;if [trade-record-one-len] of myself > 3

8 H( C) M+ O  ~update-neighbor-total
  B; @9 t2 {2 c;;
更新邻居节点的数目,在此进行
5 P5 U+ }7 \: L) J5 W+ d* _- e" clet i 3
' [# M) y. Y" Z3 A" `* Y" Slet sum-time 0( _- d/ }. P7 _! }+ x
while[i < [trade-record-one-len] of myself]
7 E! K1 P0 o" q& ?, Y0 \[
8 h9 |9 m2 w- m" V1 tset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )# t# e- h7 b9 Q& n7 q. y  W
set i
& c& X; B3 q+ Y5 u( i + 1)
: O- T3 u% s/ {
]
5 o5 D! [/ f- W+ O/ r7 h% nlet j 3. `, c8 z3 k3 h7 ^1 l+ o; P
let sum-money 0. X$ v: M" Y0 ~- ], W
while[j < [trade-record-one-len] of myself]
8 p+ e/ @. b2 \- e% N; [6 C[$ G0 K; S% ]% g
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). M  {& o. N$ M$ K
set j
) C" q7 x7 P# ~. @+ e: Y( j + 1)
) _9 I8 y3 S- \0 z% Z7 f
]+ I( z2 g* r5 m6 m& o8 o
let k 38 ^& P: f1 e3 D2 A  n
let power 0
: u$ \% e( H8 L4 C* C; @$ ~let local 0# |# I5 V' W8 p. {" _' G
while [k <[trade-record-one-len] of myself]$ y# H; i. N+ o9 z! L
[/ h$ z5 ~4 S8 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) , c/ R, |! e; o5 I& F# T. j1 p
set k (k + 1)
& |9 j# m- N1 m]
- k0 D) x( [, _' t$ w1 N- a& R* _set [local-reputation] of myself (local)
) |1 V1 g4 r" I& oend
, x  G: y9 q. Z' \# q' n, J4 r) u
! @  k9 f4 t. o1 @6 ito update-neighbor-total7 @3 V! i: e! Y/ i7 N8 }

7 A! G, i3 q2 i0 j9 F7 `. iif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
) D7 F2 h- V/ O2 b! |; ~! M3 b; _  H* v. j
) H# h* c+ G  M9 w3 J
end* F6 h0 a% X0 H- t- P
# C+ i6 g, z3 U2 k! \0 X
to update-credibility-ijl $ Z" n; u/ J% Y3 v
0 y/ @" e# ]* o3 A' {
;;
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。# g2 o  M: Z3 W- R
let l 00 U# K  X$ A! I. `5 L/ ^
while[ l < people ]
. k2 g% O" L1 Z; J, `8 x; Z5 T# `;;
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6 ~; Z; V( T3 Z, _6 S! E# E8 [
[
* n" ]9 H! O; j  B& t' Clet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
3 ]$ X# y! P! r4 {& Vif (trade-record-one-j-l-len > 3)
7 F' _  G3 I! B* X6 ]. g7 d5 E2 R[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& m3 v5 i& ?: v
let i 3
/ x& B. W% i- e. m: rlet sum-time 0* c5 _: P" R& d- e* o8 |
while[i < trade-record-one-len]  E, Y$ |# c) E4 I
[
; x6 V* d4 f7 c$ Sset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )0 ~% H9 v; P/ w& w& j9 w
set i
! ~; ]) w0 v' J  X2 O( i + 1)

7 [- M5 q' d- s6 X8 {]# f1 e, ]- j  i' @6 j2 u8 c
let credibility-i-j-l 0" h# `7 Q6 ~9 a4 K# p: ^( M2 h
;;i
评价(jjl的评价)
! t+ \( v$ J) ^: blet j 3
; B7 |' ?7 Q4 ^, R4 Z  vlet k 4" l+ u9 F7 e5 J
while[j < trade-record-one-len]; \. q# W- a6 ]9 t; N  W% v2 i
[
8 a! W6 N% c4 [! L  q# h: Bwhile [((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 _! }% ]7 `( d6 i: }, Gset 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): P$ l7 t7 f# _  O6 e: Q
set j
$ e3 l+ C) ~  E5 e: G  Q( j + 1)

- o9 f+ l9 ^: T]3 Z% Y& j' w- s/ E2 V
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 ))
7 k9 j$ ]3 K4 x6 }
2 S: X7 _) K( N+ ]' [+ G
! W7 K4 a; p3 p3 B
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))+ G; R8 t3 I& l9 e- K
;;
及时更新il的评价质量的评价
" @8 R* Q4 E" v, C. l% `set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]/ x1 o- P8 F7 p
set l (l + 1)
3 d2 z: a  I' q6 }5 B2 v6 r7 y; |]: v% G4 d2 r# q+ x! x0 I% U- b! n
end( N3 v' }3 X, L+ G2 F( `" E# ~

% F9 V  ]. B2 y$ y1 y* s, |to update-credibility-list
# T, I7 Y' v7 I& w' \* }let i 0- N7 n& b" W- X( l3 N4 d: Z
while[i < people]9 L+ N9 g! g9 U' I6 h
[
( u! I/ q  m0 I, ^; n* nlet j 0% _- v  v/ u  V% v8 X( E
let note 0$ n) v9 G( f! B( d' c, s+ t' W
let k 0
" R9 G6 m& ?$ b7 [" h3 E;;
计作出过评价的邻居节点的数目
  m2 r& u$ M5 m4 c. c7 Rwhile[j < people]4 ^( ~; R$ C* A; ]! n; U& t
[
5 z2 ^4 P1 V3 S  zif (item j( [credibility] of turtle (i + 1)) != -1)+ T+ W' W) S- K
;;
判断是否给本turtle的评价质量做出过评价的节点
( s0 }6 g3 q+ m0 X[set note (note + item j ([credibility]of turtle (i + 1)))- r* z) X4 ~: t* q
;;*(exp (-(people - 2)))/(people - 2))]
7 x$ p, e4 S" x
set k (k + 1)4 S2 t2 ^, S5 ~6 ~1 R( J+ O
]( y" S4 Y* c" ]3 Y" Z( ^* d3 _
set j (j + 1)
6 K; p0 [6 R" ^9 w]! j7 x- e, K3 ~1 d! `
set note (note *(exp (- (1 / k)))/ k)
! o' N( {5 l- n. N" ~set credibility-list (replace-item i credibility-list note)& Q1 _% r# u+ g
set i (i + 1)! U% `, @3 d2 E- _6 Q
]
% G0 F$ F8 p. A+ w2 Qend  J" v- n1 q& C$ u
- I6 ]" }* g( F& {
to update-global-reputation-list
8 P9 w5 \3 r$ o+ ~* k, C7 hlet j 04 L9 Q- m- o* q, a
while[j < people]: |# I* }$ Y8 v0 I5 i0 h
[
" _0 T& k, m' z- v- C- j" G) t3 olet new 0
2 Q& l. w* S" t* j;;
暂存新的一个全局声誉. `  N$ c! y# H: t2 J+ t
let i 0) i! \# a8 B4 @3 n. i
let sum-money 0
4 k( m2 p! b% p2 p6 clet credibility-money 0/ z; |9 k9 d2 i+ X$ K0 ]  a
while [i < people], O# ~  \4 h# g$ e
[( j' `0 Q$ `6 g" N. X( R3 n
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
/ z; i! j5 j( m9 jset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))" [' i* Y; }$ v- x$ Y
set i (i + 1)5 Y0 C$ T( P9 N
]! M4 v/ _& f0 t
let k 0
: O& r. b* L1 S( e; dlet new1 0
6 m- k3 l" Q7 c! ywhile [k < people]/ _7 }- V: u; J
[2 K* f& j6 u- {% X0 y+ a% P! h
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)  m% S, O& h( h: Z
set k (k + 1). _7 b; m5 `7 z4 ^) Q' o; S# J
]0 J( b0 W0 F& X" P0 w- t
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
5 }+ a( I1 d" `2 G  _: A+ k5 f) cset global-reputation-list (replace-item j global-reputation-list new). Y. A: J# S% a. ~% ^
set j (j + 1)* G8 }- N& Q, K' _# |
]
4 O- [6 [; P6 f8 X& [/ f( uend! n' X+ M- f- [  Z1 q
! F5 x6 D4 \5 d* i) x/ }
  v' x* R; ?3 ]. c- R. Y) p
5 k1 k7 Q5 m, W! V! E9 ?
to get-color
1 g) _  O! J. @. m; c3 ^3 S; O: E  F0 f) J
set color blue

( {1 Z; c9 T8 Qend
* G* N3 o" T& d% j, P" F9 B! I; T/ k
to poll-class
! q& s* {% Q: |4 h4 F! @/ n" n( Uend; J8 P( v9 Z6 s" Q  J& `! V

2 Y+ x0 g+ r! i+ |) T. M2 Hto setup-plot1
" O5 w  w  h) G& i0 V3 s* s
8 G0 U7 `+ P& _set-current-plot "Trends-of-Local-reputation"
% r. S( B* A, ?  {5 `
$ e! @) n7 o% X- M1 l/ K8 ]' E
set-plot-x-range 0 xmax

2 Z: v- j8 c4 w) Z! C8 ]8 `
# `4 W% k. [+ l6 w5 U$ O1 Gset-plot-y-range 0.0 ymax

, I' H1 J) [0 G+ r' @end
" y0 G* }* |: P
, I3 b1 o) r/ q& wto setup-plot28 O3 p( |: `& d. Z! s0 p: f3 i

* R- `; s( s& y+ ~' N3 _set-current-plot "Trends-of-global-reputation"

: e& o3 m* ~- m) }, X. G- h! ]' B# J2 d9 X/ q- G  O
set-plot-x-range 0 xmax

# _4 H! J) m& ]2 l  @
9 N- _; v2 e% s+ Zset-plot-y-range 0.0 ymax

, b% O4 z8 K% x+ ^- M, |" [end
0 F6 D( F( [7 E4 b1 T" C; u: g( |4 s0 @5 h
to setup-plot32 z4 b* k- _/ M& C! |/ z) j: B

" b1 h& H) Q! kset-current-plot "Trends-of-credibility"

# y% W! a2 T( j  E) F; a6 N+ K
$ }% I0 X; l1 [) C( J  ?set-plot-x-range 0 xmax

9 ~- ?" @& l2 f6 g3 H: {3 n  ]: X2 O* h8 d
set-plot-y-range 0.0 ymax
' A, I- ~+ Z7 @) U- s
end" H: p, M: M  R( o- \
3 A; ^5 k  W9 b0 k  g$ W  x. o( B
to do-plots1 ?/ t% w, y( K: H8 n
set-current-plot "Trends-of-Local-reputation"
. i' s0 W- @, n: i; y( Aset-current-plot-pen "Honest service"( ^7 ^, ]) t8 Z, d
end- z8 N5 {6 o' y/ X! m  o. o9 h  h0 G
, {# S. P: c! D3 A
[ 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.
1 b% @* B8 A0 S; o; |' T5 D* w! T' j) I
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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