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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:7 Y  l8 a: A* ?
to do-business ) ^! Y8 i: y. Z) E: ~7 l% O
rt random 3607 }% ~! I1 x  B9 a- V
fd 1% O# w" R' n1 F' O2 a: s
ifelse(other turtles-here != nobody)[1 i- F* S8 W# q& E5 I8 P
   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% q( d) O* S4 D1 f1 m   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    7 t$ R# `  o; x( {0 {$ n: t
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
2 h* E& f- O8 Q; j- B0 p   set [trade-record-one-len] of self length [trade-record-one] of self, j( N1 k2 o1 d" k! _* v  \
   set trade-record-current( list (timer) (random money-upper-limit))
' X( f0 Z2 l9 f" L. T( C( Y# B  m: {( ^
问题的提示如下:( D0 m" @2 c7 x7 w# r

6 A+ v- I& Y2 Z5 x9 f2 c9 U1 zerror while turtle 50 running OF in procedure DO-BUSINESS
3 F: Z3 m8 ]# e) h  called by procedure GO
" p  \1 |7 s1 B% o1 COF expected input to be a turtle agentset or turtle but got NOBODY instead.& ]. n9 f; q9 @) [5 N. a
(halted running of go)  U0 V' Q! A. R' }0 z3 k# X* Z

2 Y- G' t# {. S' \/ W8 `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~~4 O% H  j' ^% _3 Q% _5 K5 M
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' [/ X0 O6 W# a5 w. ^
globals[& J( z. C' [! L1 W
xmax
6 e/ y/ A7 K- ]& b% {ymax! I0 a; r$ r! E, A
global-reputation-list
5 Z5 ~. W5 v9 l7 [0 H( r
6 w) M- e. q$ G: a: }+ A  g;;
每一个turtle的全局声誉都存在此LIST0 v# I7 X" N2 t) u
credibility-list2 m$ P9 F! v. V: d
;;
每一个turtle的评价可信度7 D( x# d! ?0 A* T$ ~
honest-service1 z' e4 p3 a/ W/ f6 r
unhonest-service
4 S; W/ H6 q% F2 C# [- Soscillation2 P/ |0 d( ^0 r1 C' Z; ~% l
rand-dynamic
+ y2 F  Z9 x0 E+ K]
- e6 e' \, t: k
, F$ g: m8 S' Q3 x9 R) v7 S# Kturtles-own[* t/ v) t9 b  \+ Z$ Z; L+ G& ]6 w
trade-record-all
. x+ d1 s) _8 e9 b. [& T4 @' ];;a list of lists,
trade-record-one组成
# c7 Y' o! k( Y' X" D) Btrade-record-one
: m' `4 `+ o2 X;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录7 n+ h- ]8 y. k8 j* g. l

" `8 }4 h: ~( [' D, ~% F. ];;[
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]]/ q4 D! }5 p' C! a! J& ~
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]
/ a) C) b  M, n% G( {% zcredibility-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
2 O* J: Z* P& V( }+ ?' m1 d! t& M3 wneighbor-total1 e5 w/ H0 m! v* i
;;
记录该turtle的邻居节点的数目% t2 e) H  C$ a( @8 [0 W* E
trade-time# g; P6 f0 s4 Q7 G
;;
当前发生交易的turtle的交易时间
& b* K, d# z1 r5 [% Pappraise-give
' a7 j+ Z3 u/ A: m& m4 V;;
当前发生交易时给出的评价9 c6 I0 P/ ^2 \7 Z
appraise-receive
+ L, k3 J# [) |% }; s;;
当前发生交易时收到的评价
$ i* |; U  G- _2 I. S2 }+ zappraise-time
7 j4 [- @) t6 I4 w4 `1 D5 ~;;
当前发生交易时的评价时间- `" [1 T1 L: w  J
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
: u4 P( g5 l3 \7 i1 |3 a, I1 h+ Ltrade-times-total: ~' I4 Q! L% F, N
;;
与当前turtle的交易总次数
# O& I: ]* R% L0 \; dtrade-money-total
8 y' O7 @, l& y4 t, Y0 @;;
与当前turtle的交易总金额
! e7 Z/ E9 n5 x4 R- m8 Mlocal-reputation
9 l' M. ^; \% l3 X& `  lglobal-reputation# G& V4 J4 f$ U2 [) ]7 s, j" |
credibility5 o  v+ r  a4 {
;;
评价可信度,每次交易后都需要更新
" z" C. r( J$ n+ j5 ^credibility-all5 m4 H2 i! `% Z4 l& n! K
;;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. F' Y  j+ Q, P, u( {
; |/ I( c0 b8 t9 P6 M  o
;;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+ @3 C( g) A, ^* v- [* v
credibility-one8 G5 t" x7 A1 }) T& R1 f
;;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people4 q( L# J. o. x1 z- r5 a
global-proportion
! ?0 P5 q0 i: E2 Z: T/ K$ dcustomer
1 M2 L/ t3 ?! \" Q, mcustomer-no  e  D/ d/ p* o6 x% P, |; t6 R
trust-ok& i: T4 v, C, }3 g  D$ \5 b, Y6 Q
trade-record-one-len;;trade-record-one的长度1 d$ [8 L5 z1 L0 Q+ _* S& c% j# v8 S0 m
]
7 J' O& H* _1 W: J6 A+ F& R( i6 N( |! Z
;;setup procedure
6 u- K1 T* Y: O  o6 h6 M! ?( e. V  p
to setup. O% ~& F: V7 C# f4 y$ E/ g

- O; }8 ?( V7 a/ _" N+ r3 kca
0 {$ b5 B% {* `% |+ Q: W
8 q4 D. }0 @! u/ ~; f9 J  O
initialize-settings

9 N9 P+ U3 F1 ]4 e; }  \% n; }; o/ w1 \+ i- l4 L$ L
crt people [setup-turtles]

3 Q! F5 a% k5 a9 H5 z' A) S9 }- U5 z* D* W/ T) e% Q
reset-timer

9 o+ I3 o, t/ {
% R, s* j1 G- y! J6 Ppoll-class
$ k1 B, h) b1 c$ z
9 C* M0 Q5 z3 U
setup-plots

$ q9 T7 m4 b! X) m, z( Y
( O5 R' }8 v! A: j) K: b: X: Rdo-plots
# E+ O2 z9 u# V# @9 v. g
end6 m2 M. c0 K$ C' d' x- [4 ~
1 x3 \9 v. g& u( b4 z9 U! t
to initialize-settings
) \0 T* w0 O+ ^: D0 @5 i) B9 |# ~- _
; E' E$ h9 f1 G8 I5 j) tset global-reputation-list []

( i5 l# Q$ [2 R, t; E: P
& H6 R5 c  k; C4 [( Dset credibility-list n-values people [0.5]

9 B. A: T8 f& F, i: X
% y. U; t7 p4 c$ o: M$ m. M7 H+ O/ j3 Uset honest-service 0
! O# q; a2 v1 w, }+ `
' @, p) [7 F: y/ }: O, V2 j
set unhonest-service 0

8 S: m4 H- U2 `/ ~8 Y! e
& n4 W8 n1 W, X9 V, D$ x  iset oscillation 0

( Y/ J. N7 F& g1 G
1 l4 b& C0 v& |5 g+ D* M+ Pset rand-dynamic 0
) y4 b/ ^' O9 t# U
end) t7 V# K2 J7 i7 G6 L/ s8 z8 d) r

! A/ b1 B  y1 Q+ qto setup-turtles ) O2 o9 n+ I- e- J* }7 w) t1 i( x& y& }
set shape "person"
/ ]4 C  z/ p" ^) ?  Dsetxy random-xcor random-ycor
! e* c: j2 U2 x5 T( ]) M' |set trade-record-one []  b7 Q6 U2 z; o5 i: |
4 Q7 O9 r$ q' C* x
set trade-record-all n-values people [(list (? + 1) 0 0)] ! R' S: O0 X  E" r

0 v& @- o# B7 x( i: k1 {4 D# Xset trade-record-current []/ P6 k5 r* O& T
set credibility-receive []2 h% p) r5 |0 p. D) O/ P* M1 t: }
set local-reputation 0.5
1 y" k5 E; k. ~6 qset neighbor-total 0
/ u. r5 ]; x& M. aset trade-times-total 0
8 C- L# O) ~. L5 }! M9 S6 E& Zset trade-money-total 0' w+ J7 M# R5 O3 v$ U
set customer nobody8 r, R( i- i6 t9 ^: U
set credibility-all n-values people [creat-credibility]
! Q+ x, a: ^) m0 ^) Cset credibility n-values people [-1]
1 p5 m: B6 N! D$ Vget-color( Z; F6 q. p! M
+ \, b: ^6 D# N9 O
end
  n' ?' j! ]" j0 O. f& s5 V, m
6 q6 k( _4 p# S$ l5 s) Uto-report creat-credibility
" @' z# A9 B& J) X& Z# Sreport n-values people [0.5]* Q/ q2 i) g* J
end
5 {! {. T3 B3 b9 a- D. o5 |0 |7 ~) J
to setup-plots
! g2 i- A9 I' k  D
0 J4 G- s! E- M% k1 ]set xmax 30

9 ~& G2 ]: A5 K7 Y+ b
' S8 ?  N% X7 h/ Q% O$ L9 Hset ymax 1.0

8 `% z# U8 V5 U$ B$ o( ~5 C# J5 o6 i
clear-all-plots
3 @' c' H  w; j- s
% j3 n0 w5 v; x0 B# N
setup-plot1

, q" @! ?3 U8 k6 b  X' L8 {8 A  q' W. p: M) K- a
setup-plot2

3 X: C$ l3 A3 g* h5 B1 C" k& l4 n
9 \* ~( r% Y0 R" e: F4 Csetup-plot3
1 ~6 l/ ]$ N5 t8 }" X0 I) E
end5 e  {9 X9 d$ Z' |! j' }
- c" ?" n' g1 i) E9 p  V
;;run time procedures8 W+ m+ a6 s0 b) B

& W. V1 U6 c" i5 tto go# x# E+ R  j( G8 w& g

  i3 `; u9 X% T0 _+ g' Lask turtles [do-business]
4 I8 t0 _8 b6 s4 n0 ?4 ?$ Y( I
end9 C: K( H; @) R8 i, \& H1 {
2 H6 [0 n* }- W
to do-business
! R( m: z/ R% U. u& s; C$ Q% F
, I0 ^' H& o9 Y! ^5 J: n
1 B3 A  i" g9 s3 x
rt random 360

2 \2 g# \1 |! O4 [" S, \
0 z, l1 l' K" l& a  Lfd 1
% r1 m, p# J" a% l$ ^+ ^! [. W
- \  k: ^/ x" K2 @2 H. m" S% C* A
ifelse(other turtles-here != nobody)[
* H( v! @) Y( N

5 ]5 K( ^9 `/ T- Z, `2 Rset customer one-of other turtles-here
6 B, j$ |; s! r! c

# l. n: t+ I4 e* M5 g. T;; set [customer] of customer myself

6 c9 w" f  Q4 a' {" G+ F$ |' z- H7 ^  O! U9 `
set [trade-record-one] of self item (([who] of customer) - 1)! B1 O) z$ j: H; m& ]# I  C
[trade-record-all]of self
% g) ?1 d7 ^, t;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

6 c2 T% d0 f. a& k# I9 @% ?
) j" }% r) r7 t* P8 A9 C; {set [trade-record-one] of customer item (([who] of self) - 1)+ W1 O( q/ Q+ e4 p
[trade-record-all]of customer
, [! P3 g' b. @1 @
, w& i- f- y' v5 P& i
set [trade-record-one-len] of self length [trade-record-one] of self
; {8 U& F$ S6 s3 O, L
2 _# v0 p1 l, Q# O
set trade-record-current( list (timer) (random money-upper-limit))

  |7 a/ l. I# Z6 }. p4 ^7 d# \- o
* F: i( f0 o2 \8 E9 M- L) S6 Y0 x6 Dask self [do-trust]+ [7 U$ f8 z; K) i0 O7 A
;;
先求ij的信任度8 l5 o- K" I3 E- ]8 m3 E

) b3 {  y2 M+ v8 y+ x7 nif ([trust-ok] of self)
3 S. }) h  @' |7 w" D4 D, w;;
根据ij的信任度来决定是否与j进行交易[/ j- m( l! _1 }4 h$ g
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
* g2 D7 n" G' _3 x7 n5 Q' i6 R4 U% T
[

* }. @+ y. K- t* c, c
; k# F0 S/ @3 f: V8 d, C) a4 R$ d4 Odo-trade

% ]/ s" ]0 z1 M8 |4 @/ W# B+ f
update-credibility-ijl

7 c: G5 H2 R# W+ v/ ^) H3 }; |/ c5 h. }9 V7 _
update-credibility-list
  P8 o, F& B5 O; C' ]$ y

* x6 b2 }) w0 W  H# ?1 t
" A4 p! _$ h8 A: h- p6 `2 |update-global-reputation-list

0 y& I4 L/ l; E) k( ?) ?- w
* _# y2 w' z6 D) q- B. T/ Opoll-class

* h) Q( J7 Y+ L; i. D. \
  i  ]2 ^5 V5 Hget-color
& v2 }# U! b( a; e( r

+ b" K0 S6 i2 m' @" h+ M, {. @]]5 E( P; b  t# ~& ]: O6 S4 y
& W( Y; h0 P# M* K. {8 b/ w
;;
如果所得的信任度满足条件,则进行交易
: A9 P1 a0 M& b6 k7 R# w7 x5 [- U" [1 p$ e5 [" P* `2 h$ P
[

. I+ Q) L1 W  [- |/ L# ^* H
% N) s( X. A: M" ^* \# crt random 360
5 K1 i3 Q1 q+ l3 X' A: D9 f8 f2 `& b
' t/ f; H" @( ?2 |' [6 q* z
fd 1
, r4 _3 h1 \3 W4 O$ K

1 s) `" m' y) {) @8 s4 f  u]
2 }4 d2 |* a- X9 Z. x
+ A! v1 X! [, A% n/ x' J+ m
end

0 ]( r' W4 c* Z# b1 `/ t' G# I/ F6 }1 S9 C$ W
to do-trust
, [/ w; S: c- Z/ Z. u7 X; j* jset trust-ok False
; x7 D& P. F, K$ l% ~" q
9 A3 u! k4 S& x- |& s

9 S- p1 N6 _4 }) T& w: ^1 J# nlet max-trade-times 0+ _- }/ {' k: Y8 t" L- A) R
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
" m+ R) c# [5 U. y! n2 |let max-trade-money 0
. ]& v7 J% P4 z% q! y0 D! ^foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
- I4 g' C( V* Ilet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
* z$ u" O0 q4 X" J- I5 M( ~1 V6 ]1 o* y, F6 S/ D0 I
1 H6 N; j! G* j
get-global-proportion6 T  V1 q% z! m! N) w
let trust-value3 d0 @2 I  @) J6 O% V5 a
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)
' b: B, s+ O) V; J8 U+ y8 ]) F
if(trust-value > trade-trust-value)* D  x' w' u& Z; @
[set trust-ok true]
) G9 Y0 v5 ^' L# j7 aend% J  b, P, ?3 `
9 r5 Y5 |8 a/ X8 \2 D" `
to get-global-proportion. y7 {! V9 m1 J4 ?& j2 z' ~
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3). U( L$ U( f7 H; m- N! D
[set global-proportion 0]! V6 N6 O% n2 {* `, M
[let i 0
! k% z+ }2 i+ P+ N/ xlet sum-money 0
  y, @: Q- J* U8 ^" s6 ?while[ i < people]
8 I8 E+ X( g9 h; }2 {[
/ ^1 v8 s, p: y2 H, kif( length (item i1 I' W9 e  T/ a% _
[trade-record-all] of customer) > 3 )
( h$ B& t1 T- @: l" V: K4 {
[
. ]4 ?  S; b6 ], P% _7 B8 Uset sum-money (sum-money + item 2(item i [trade-record-all] of myself)). R. H2 Z6 ~5 v- H$ j) Y1 u* Y  ^
]1 A* ^) x5 L# T  e, \
]
( |; ~9 o: d- r0 x. Klet j 01 g# C6 k( w; N6 K1 X1 E3 z9 {
let note 00 U; ]( }$ e' h- _# D# `
while[ j < people]
( B1 H1 p" S3 i, ][
$ C- B; [1 t5 ?if( length (item i
$ x1 ?7 |' j  i[trade-record-all] of customer) > 3 )

3 v, ?, ^3 X5 L4 ~" g' X# \% g[) b! k( G8 a, r5 r
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
8 I+ P  @- e% a4 S' [& _! ~[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]3 T% h1 v9 w9 x3 P; A7 f( S  Q
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
1 {% [, [1 b0 _1 X: @1 |]
! ^  }* |3 l1 P0 C]3 R+ O/ S9 }; d3 f. u1 P
set global-proportion note8 ^: n2 G7 L6 y
]
( k4 h$ H7 p4 U0 I! \4 r7 [end  `2 x; I2 C' Z0 ^, o4 b% j& k% w

% a, v: V! r1 y- Y: s& ?to do-trade) z( n, L, N1 q+ c4 i
;;
这个过程实际上是给双方作出评价的过程
( h; b4 S7 S2 {7 ^set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价0 D$ L0 ?3 Q& u2 @2 \" z/ a, ~, [
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价& a7 w/ K  T1 S, E" T, |$ u
set trade-record-current lput(timer) trade-record-current
6 N$ s: a+ ~$ T. s8 _;;
评价时间7 j' T9 G  Y! U
ask myself [7 ~3 z) o+ G3 D3 N. {; w& W. j
update-local-reputation
( u1 \4 i7 U7 ]0 \% l- Iset trade-record-current lput([local-reputation] of myself) trade-record-current) w. n  ]" y+ d3 w& E# r$ a
]- R0 R8 j4 F0 s5 b& E0 n
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
. P( R& N; ~% E. z;;
将此次交易的记录加入到trade-record-one+ }, ?3 H2 `" \8 A" H
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself); D3 g& J$ s0 X. S3 U. K+ r
let note (item 2 trade-record-current )  t, p( B1 R) G* p
set trade-record-current! k* h. u2 e3 e- D9 r: S
(replace-item 2 trade-record-current (item 3 trade-record-current))

6 L7 Z2 R# F" H" Sset trade-record-current0 l- N- t/ t- b$ S% n! M: b& k' Q' F
(replace-item 3 trade-record-current note)* j( S. z9 t# t, f/ i% P

2 E" P6 |1 L9 j5 f
: Z+ ^) f& J: G5 M+ C3 X
ask customer [
% V2 I" ^4 X4 w; S  ^% h& jupdate-local-reputation2 t/ c/ b3 ~$ T: R: r% i0 T5 j
set trade-record-current
! F$ P1 e8 r; _5 \$ d(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

$ h7 H" [! n0 K# G$ M' t]
) K+ r! v- |# M6 y$ U3 ~/ [8 C  c$ ?8 y3 e

: i& _/ J) `  A, v. z3 v8 mset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer$ R5 f/ b: P. f& j; ^; Z

. ~/ X6 p* Z, b- H7 pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))2 E, s8 f' |) N
;;
将此次交易的记录加入到customertrade-record-all' }1 m$ d6 v8 S/ Z% T
end! ~  P& T1 y) h& \

) j% N: {+ S& H/ Lto update-local-reputation) P' T# M, B% U
set [trade-record-one-len] of myself length [trade-record-one] of myself
6 T% C" d6 q" v5 `" A7 z0 C
' v- b! C5 f, m1 n0 V2 P* C0 ]
  K1 N, f; z; q6 W, n9 C2 g3 G;;if [trade-record-one-len] of myself > 3
$ ^, B# Z- d9 L: q
update-neighbor-total
" M# I: V" y* j' \% G* o  Q;;
更新邻居节点的数目,在此进行
5 ^! o. l9 B; Nlet i 3
  V0 [$ ^0 |8 u! B/ Q. @% X2 zlet sum-time 0
  N  O* Z* Y% h: W7 \$ q$ K# Twhile[i < [trade-record-one-len] of myself]/ C% `' p. A$ h$ ~: q
[: i  A1 u7 t* z
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )7 L( I" U7 z( b6 d% ?
set i
6 S; r  ?9 j, z6 [( i + 1)

8 W0 X7 A  l$ ^! a! I' d]
: k6 [7 a, h+ q; @" T; Y. D& z, ~let j 3
! u2 y6 S4 |" {let sum-money 07 n, }/ N% m1 Y- J
while[j < [trade-record-one-len] of myself]
- h/ ^+ K7 Q" M[
# n6 U! j0 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)7 H, N+ q# z6 L& Z( q
set j
' ?5 a) ]9 R1 W% n, D) Z1 i( j + 1)

9 S$ e* x. X4 H. c]) j: V9 s: u4 q' m2 Z
let k 3$ R, M4 c% n/ y- t' e3 f# c: C
let power 0" Q! \4 n  y% Z
let local 05 P$ `9 L$ D+ T8 H; l0 f6 H
while [k <[trade-record-one-len] of myself], y" P" L9 p% z4 ^4 R
[
1 k( N& z! c- j2 R% a8 Z5 ]( `( {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) 9 R  v& D4 _- d
set k (k + 1)$ F0 K# K0 V* O$ e3 ]) Z
]
1 h) ^' }) Y3 q  c7 ^( D2 n) uset [local-reputation] of myself (local)
& ?+ {( |# X* u3 r3 k4 eend
$ E7 f: z0 t& L# Y! ?' ]& y8 U) f- {/ U/ \1 Z
to update-neighbor-total( u0 B+ p0 {8 y( w& T

$ V& J7 C6 X) d! F& R" ?4 s, b/ K( rif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]' _2 w5 U6 l6 C# ^
. C1 r* \8 Z$ B, a
( @! J3 m% O" S3 w+ M9 J* H
end
4 O9 h5 B, s0 o6 J1 \9 M# b$ ~
* r; [. p5 j( `3 vto update-credibility-ijl
! T2 c( s8 C" Y! r  \6 [8 C/ |2 q! u# z9 l" [" T6 P
;;
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。
# R5 Z) @' V  c$ a& Q7 g$ Vlet l 0* p6 k; F9 |1 I, F9 g2 q0 J/ F' q
while[ l < people ]
- a/ f$ E/ C8 y: y( i5 w! 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
& ]3 F( v  u0 d* @7 R8 y[
1 @- l6 n" E7 U% c1 c5 M+ `9 n' Tlet trade-record-one-j-l-len length item l ([trade-record-all] of customer), g- j  K' ?  m
if (trade-record-one-j-l-len > 3)) a5 x; T9 j: u" W4 i  m8 K
[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
; k8 e3 z! \/ ~" zlet i 3$ n% p2 o. U% w2 h& S
let sum-time 0
$ U, _) t0 J( V- M: xwhile[i < trade-record-one-len]) ^+ z; u6 c" _4 L7 X
[; \0 K6 E! g6 `# e/ P) w. Y! T9 l
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
2 j1 W2 }, L0 zset i* E' |+ u% Q0 u1 S
( i + 1)
, @( F  g( v1 V: H! d" O7 V3 {5 ]
]
, y8 w, Z" F# [( h$ }6 u. ^# zlet credibility-i-j-l 0, W4 e, C# F1 f( H2 X8 n
;;i
评价(jjl的评价). O# F' V! i8 ]6 ^0 g
let j 3
; n$ W2 h) b$ \+ plet k 4
2 E4 @; P$ O; a* h# q4 R! [while[j < trade-record-one-len]# }0 b* s* ]5 b9 H* j% ?
[" p# S& M( `- E2 c) w% ~! u$ u
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' Q# H/ m# @/ ~" z
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)
" C& V3 |: {4 r7 uset j! p! e6 N: m! v" A; p& M. M
( j + 1)

6 C' l! s) L+ @4 J]6 O2 N) D& T- ?& v% o/ H" I, Y+ P
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 ))
, X# n" M6 \) O/ L7 F3 J4 s" H7 x3 p1 M6 c& A2 g
2 w0 K7 Y/ l  i) {) S% o2 y9 p9 v
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
8 x. @) z/ q. y8 B! E/ A8 S2 J, t;;
及时更新il的评价质量的评价
3 h4 B, E& d9 p2 dset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]  Q8 b: |# C' x8 ]* }6 f  R" v5 w
set l (l + 1)+ E) I' s# O+ Z3 m& {8 [5 Z1 n
]: Y+ [! B! }+ p4 Y! w( ]
end! @/ U( h$ v+ Q7 L& T9 e! O5 Y4 i4 N
. S3 n, @( M& S+ b/ k* s6 h
to update-credibility-list. W9 z2 q/ v' e
let i 0# `4 N8 r' w' C
while[i < people]
3 l3 n. [# @4 h' o[) ?0 W/ }8 b2 f3 E
let j 0
) ^! H& J+ @9 C  l% Olet note 0- K0 e) W4 t1 s
let k 0. U5 Y/ E2 s8 w+ X
;;
计作出过评价的邻居节点的数目$ Q5 v! ^, Z# b
while[j < people]. H# V1 A" ^) b
[
% V2 ]& n: c5 Z! ]" U) D4 zif (item j( [credibility] of turtle (i + 1)) != -1)5 f7 @: \5 G; D" F* Y0 `7 R
;;
判断是否给本turtle的评价质量做出过评价的节点% _3 e" d% a, y
[set note (note + item j ([credibility]of turtle (i + 1)))
+ O/ V& n) \; k;;*(exp (-(people - 2)))/(people - 2))]

9 V% p3 L& S' n6 F+ G! T% z7 H% aset k (k + 1)7 a# y0 W- ^  ]0 E" W8 D; G1 E
]* m7 C( Z2 R% w7 h( b, X) E9 ]
set j (j + 1): m3 R: Y, [5 Y/ X6 N
]
+ u, v. \$ Q  s/ n/ w2 nset note (note *(exp (- (1 / k)))/ k)
  X6 W! L* P( I  E( v0 V# _set credibility-list (replace-item i credibility-list note)
7 @- J! }% I9 L+ D" z0 V4 r; T+ e) [set i (i + 1)$ \" G& P9 k* j' N; E; m( M+ G
]
4 w: f& a0 x$ K& B6 M$ E7 Yend
1 c6 q7 Z+ c- I% a
( |5 K3 z- M# t+ T7 k+ R# Ato update-global-reputation-list
3 h& S2 Y! u2 Y2 k! Glet j 0
& T% f3 K" R- J3 M* J3 v4 T0 `while[j < people]
/ e4 U, j! L. D8 F  E, R[
: p/ H, H2 b" Y) k% W/ B- z5 D5 ^let new 0
! t6 s  I6 D- B3 {1 v- m;;
暂存新的一个全局声誉
. p: o! a2 {, Y% @1 j0 P; flet i 0. \" y7 M3 i3 [; H3 b
let sum-money 0
& y* L& i! _4 k; c1 F+ Vlet credibility-money 0' }& B; w/ Y* i) s2 w+ K' S
while [i < people]( `( J1 T: g3 `$ @5 G
[$ ]/ l2 w: v& ?3 v, P4 U6 o  F% H5 A
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))& O) Y1 r- b% D# N, L: ?5 `7 [9 h
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
3 M5 T. S/ ]3 L/ S: l- O& F- X+ Kset i (i + 1)$ w1 y* a0 H) ]$ P+ k  x5 w! H
]" b9 c$ }  F- |) i% D7 ^
let k 0
3 f. c# q" P( p8 N5 jlet new1 0
* A* T9 T0 |9 ~9 D* Z* Swhile [k < people]" K1 K, A" Q3 G+ e
[
* d) [! z" \$ t8 ]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)* `0 R7 b$ p7 @. Y1 o
set k (k + 1)
0 p6 E' D# F9 R0 B% \5 p]
) |3 L# i+ H$ @0 I4 R; x( Fset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) . u; x" [( R- y! g( Z
set global-reputation-list (replace-item j global-reputation-list new)7 u- e9 l& K+ _3 [* H( e
set j (j + 1)4 O" O: c& J5 q5 l( W- y
]# E+ t% J/ s; C: r4 M: d7 K' h
end5 i2 T: _; G: J- Z

! I8 T+ q: r, @: H! }3 t1 o7 y* W/ Y; x7 N- F

. ?" `9 C' ]4 Dto get-color
0 ~  |/ v! ^; q  n" F2 @$ C/ L( i  u1 a8 O* l' I
set color blue
5 {) j  M0 J6 Y+ V" ~4 j$ z1 u9 S; z4 m
end
" r( y: Z7 Y+ R6 o) t2 }& S4 ]) V: w, a) C
to poll-class# `8 E, \9 \4 P! e, A
end
& n6 t9 L& d, |, y' @& e8 }7 z0 a% s
to setup-plot1% o( ?8 X+ S- b( D# C5 Y+ \
9 b& s0 q* Q# K, k, G3 D! u
set-current-plot "Trends-of-Local-reputation"
) B0 z# c1 N) i: n5 V! o( g

, n, s: b- \) x/ _/ Rset-plot-x-range 0 xmax

1 l( e# v5 N) m# d  ^5 c' q0 o+ U: s0 n% d
set-plot-y-range 0.0 ymax

. D4 B5 {5 S& O9 k7 a& B2 X- p. Cend0 H8 J5 y8 M* E# ^& `% E* C& b* y
0 R, U' Y  u/ ]& F  J! n. k# m% f9 i/ _
to setup-plot2
5 z0 [/ d4 a& N0 s# U& X4 k( J0 F
set-current-plot "Trends-of-global-reputation"

. t! l. r) T7 @5 T3 ^' ?4 B
# o9 g% t4 ?0 f1 M( q6 tset-plot-x-range 0 xmax

- k9 U$ D: l- O7 v% g7 `% R, H' G2 [+ D3 G9 o, f. b) d. e
set-plot-y-range 0.0 ymax

0 j5 D4 M) `& h0 c: jend
# h  C  H: L: `9 |5 h) c
9 `" P3 Q3 W' s3 P: v  Cto setup-plot34 G# k# H) \: T1 k2 w. z

4 t4 U  m) d0 ]/ M9 Q& Vset-current-plot "Trends-of-credibility"
; C  g0 ]5 ^* U- K
8 x# k* h6 Q0 _- A; y/ N5 X+ P
set-plot-x-range 0 xmax

# h3 u5 t- W7 Q$ h% z) I) Q, y& b. E) J2 G/ j7 M: K: h- {" V9 R
set-plot-y-range 0.0 ymax
! D5 s8 n' j4 R$ ]9 y
end
. {* @4 {4 E, `! o: t$ c4 \$ ]2 A1 |( O9 W+ E
to do-plots
5 G$ `& m  q$ I+ |2 O+ a) h* _set-current-plot "Trends-of-Local-reputation"
" o, L  ^8 g* j  k1 `set-current-plot-pen "Honest service"
5 d0 L$ b" w2 _. N8 bend- a2 \" T. y. c6 r

5 L  I5 Y" l) v9 B+ K/ p7 ^" 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.
, `$ O$ ~. q) ]1 [) K7 I
0 K7 G; s; C. N" b3 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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