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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:
& Q. L" n' H4 ]! b8 |$ Hto do-business
4 J/ J6 a8 e  _% | rt random 360  Q: `8 {2 E" H- Z4 }& x7 x) w
fd 1! q( \/ O( L& ?# Y
ifelse(other turtles-here != nobody)[
8 G1 G0 u. }( I; C. m! M  L+ 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.8 i, s# |+ U( \+ J
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
1 P$ j0 ^) V# w1 W# U   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
% M- r% P' j5 d6 P- c0 j( R' l+ d   set [trade-record-one-len] of self length [trade-record-one] of self9 y! C# R  H' S  N$ o
   set trade-record-current( list (timer) (random money-upper-limit))
! g0 _! N$ h; G9 A9 Z1 S6 s* v/ {% P) P& I! u  s
问题的提示如下:7 z: P8 R' Q* O) }

. r+ w4 m* h: P. i- cerror while turtle 50 running OF in procedure DO-BUSINESS7 s1 U9 D2 W' s6 b2 F
  called by procedure GO- ~6 W$ W2 \* c8 m8 k/ I
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
4 O0 C9 N% }. e* f
(halted running of go)
0 i; \( C6 q& y0 P( f% U. O5 p% p! Q
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~~
& n& l0 ~1 A* S, V& I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/ |+ s& K4 `; w$ r  N
globals[
2 k6 s7 W& G& e2 B) z/ `# Hxmax
- X" d; Y0 N& s& uymax
5 X2 s, g3 d# B) V5 f# sglobal-reputation-list+ b! H+ K" E# i( p) s
/ o/ M% @# T9 H9 ?% y3 }* A, _
;;
每一个turtle的全局声誉都存在此LIST6 o% ^) `- ]! H, S- N
credibility-list
) T2 z8 n# j  Z1 Z;;
每一个turtle的评价可信度
4 A" O; s0 V% chonest-service
- G  ?% A  w$ @3 N* K  N2 x/ }unhonest-service7 `& \* \* t3 E, ?' W
oscillation
9 ?+ X. J6 Z: w: Y& w$ y+ ?4 \rand-dynamic
+ |) R* e% G' n: X]) t0 G. N' B# N. O( _
% ^2 X! Z# f7 e
turtles-own[. g2 |) A" ~: U. c5 Q3 L* z
trade-record-all5 a' x5 h& I( O% O
;;a list of lists,
trade-record-one组成/ o+ P8 T: z6 K# a0 _
trade-record-one
5 Q: F3 a7 {  [  [& u2 {;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
! D4 h& E  T( c# p3 N& [6 a
+ l: Z4 R* W. R$ ~% J+ m;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
) X4 E# ~- L# k& p3 w& ktrade-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]; X6 y% Y) G+ m$ n4 P3 k+ h6 K
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
" |. P5 D; t% h) N9 g  |4 p1 Cneighbor-total& E  k, E  W( K) ]  b' _& H* b
;;
记录该turtle的邻居节点的数目
; c% j0 H( X& t; e) ]trade-time
, A* w* f" ?4 H! [! J;;
当前发生交易的turtle的交易时间
( y6 ^" ~% K) m/ @4 Vappraise-give
9 T. k, u, @& w" Z' i;;
当前发生交易时给出的评价
! N! t( D& ^8 _0 vappraise-receive
5 F9 @; h; h4 w$ O  B# [;;
当前发生交易时收到的评价
: k' i2 \: b. o6 Happraise-time
# Z5 H- b3 ~% @;;
当前发生交易时的评价时间0 p! E5 {1 z3 @. P+ m
local-reputation-now;;此次交易后相对于对方turtle的局部声誉( x" l; l" n9 u( F7 i5 W
trade-times-total8 e& R+ d' S, s+ M' V; Z5 q4 @) ~
;;
与当前turtle的交易总次数
% x1 g+ c* R# y) Gtrade-money-total
# y% W2 t; l* P! X;;
与当前turtle的交易总金额
! y8 l+ E4 ~# o! ^; d3 q) |local-reputation
( e) P+ H9 ~0 _5 E# L9 Aglobal-reputation
2 A5 N, ^7 c& s/ y0 ccredibility
/ z5 U3 m! q0 Z, S& B) m3 n;;
评价可信度,每次交易后都需要更新) q7 h: K7 m  k) v0 _
credibility-all
$ c% ?4 `5 o% R; o6 U, o;;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3 c7 p) ?$ C/ [) ~) `( `; @( R% Y3 N
4 l' F0 f8 [6 u2 K6 |/ ?
;;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
" Q. O/ y$ B" ?6 {  P9 ccredibility-one+ u# L' N" I* Y& |: O. p
;;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
( h8 p( z, C$ D; o) w( x2 @' g. dglobal-proportion
8 R+ \( i4 [( V; Z0 Jcustomer
" D6 {2 ]3 G' c+ zcustomer-no
- n0 B3 ?1 ?: J% k. b8 Ftrust-ok+ B3 M1 {' t% h9 W3 z& w" D
trade-record-one-len;;trade-record-one的长度
! X& ], S2 D2 h6 D]
9 y2 Y8 l" P, E6 N+ h0 h0 R7 h
( x, A6 J, `$ L! o9 W1 g4 E, };;setup procedure% @# f% N' G; N

! P8 B( n8 ~2 B6 D, u7 |2 _9 Fto setup3 E. e+ l( d& B% L9 Y6 K
! \) Q$ h& Z, \9 P/ B) Q1 T$ s  _& Y
ca

* _# h: c! R! ^0 M6 _+ k; L7 a2 H& y3 L/ |$ O
initialize-settings
9 B3 l6 b. O2 F. |

! k9 V1 f9 s, [' h" qcrt people [setup-turtles]
5 e8 J) C( I5 l+ I: X3 f

5 T. V& R0 ?: ]4 ]2 f1 a8 w, B9 kreset-timer
0 n/ @' X. Y* w/ D
" _# ?8 `) d# B+ h; k! T: X
poll-class
# O# a: ~% ?0 u- S: ^: v

3 v9 d  e; z* s1 j- Q$ wsetup-plots

, @. |5 P( d* \  m6 a* k5 z/ K+ q
/ M# ?; H, y) z: v+ Edo-plots

% u" d" B! }' s; N: `0 ~end
  x( [4 u6 G9 q. P  l9 Y$ j
6 c) ~- j" \: b$ gto initialize-settings, f* D+ D! |) E! G4 `9 t/ d$ T( E
0 f/ _4 j! O( |
set global-reputation-list []
" e  r, x) W1 t* S6 B
9 R* W" U. Y+ R
set credibility-list n-values people [0.5]
  k0 d0 ?& T' M9 y& ?
, B+ n9 m9 X7 S. n* f( c
set honest-service 0
/ Y! P% g8 E5 h( f& ^
( H5 k# b# ]" U2 a2 ~  J$ w. n% G/ I5 x
set unhonest-service 0
' h. Q2 w! Q. _. q4 s
5 M' {5 z5 q+ y$ ]) Z
set oscillation 0
8 v/ t6 @+ H/ S. r8 p. T8 }

, ~' @; w* Q  w3 x$ ]. qset rand-dynamic 0
9 T+ F) g$ L2 ^+ R+ n
end/ C! d1 x1 F4 e8 A; F

, @+ |" ~( K7 y& ^1 u; tto setup-turtles
& Z' f; c! p$ ?- G" V0 F) ?set shape "person"& c6 |5 G# D8 Y) V( y' J- N) B" ~, U
setxy random-xcor random-ycor
2 r5 I8 y# s2 [% I8 C- ]set trade-record-one []7 J. W5 v9 D. F6 t

) h  v/ l" l5 V' @/ t# @" f, Bset trade-record-all n-values people [(list (? + 1) 0 0)] / s$ M$ H' \6 g' F! Y
& r. U3 C5 ~0 F% A
set trade-record-current []
2 U- m1 ?8 E/ g1 k& Oset credibility-receive []* D1 c3 P: r0 R9 I* b
set local-reputation 0.56 X3 W+ c% d( g
set neighbor-total 0
7 W9 x+ Z# L3 R' M5 Jset trade-times-total 0
) Z9 o3 \5 U' x! F6 H" m/ tset trade-money-total 0) t; E# F/ B* M1 E" t) [
set customer nobody
; G, c# m& E. C0 p7 @- m1 yset credibility-all n-values people [creat-credibility]
7 ]3 d' E. a9 W/ S& R6 Tset credibility n-values people [-1]3 i% @7 t* c  N4 `' O
get-color! N; k: j/ D$ E: M& E# s$ ~0 Z
& N& z/ ^4 y' B! ^4 j5 k
end
/ L4 ~4 Q% W% r2 R! _+ ?0 H  M# K* ^: S* D, \* s, N  E- V: \
to-report creat-credibility
" h+ f8 ?$ t1 c# s9 h. Z% q3 Xreport n-values people [0.5]5 b  v3 L3 W6 ]) W6 W+ N
end* Z# R/ k8 @# J5 G
* ]3 g7 _6 [' H. H* U
to setup-plots- j1 w" d* i& Q% P- ?, b& G3 Z
3 D& o) l" ?8 \% [: E' ~3 v# z
set xmax 30
5 H/ i$ ?; D0 _# V* N: o: S& U
; S; \7 U8 p. k
set ymax 1.0

# x; i/ H9 J) k) u4 F& G
# n+ O4 T7 f% _# q# g7 Eclear-all-plots

: I$ H. S+ F6 x
! g4 |  D4 D3 M8 osetup-plot1
3 o. C$ u5 K6 t3 a" ?
2 y6 v# M! T  k4 k# x& o) U- g
setup-plot2
* O& w: O. k3 w( X" n! i. Y
" H% n6 k: q; c( [5 e
setup-plot3
5 Q- v8 o+ t, y, ?/ d% z: ]
end
+ b% K  }, e; Z, K
7 ?1 A: q- |! L' P;;run time procedures* b. a1 ?+ i# s0 r0 j/ C
- {: s4 A7 @( j1 @" ~% \
to go7 N: h8 J! [5 g: h+ l
8 ]4 y2 |  z2 f' Z
ask turtles [do-business]

! Q( F. c1 O5 m3 u/ u" N+ dend" D2 t- `% G3 ]- o* Z% z
1 N" v, y+ B3 y. ?8 g5 j, K7 M
to do-business " ^$ e5 E$ W, W. P1 \

7 X' U1 r, j& c; `7 p" t
% c& X* M& w# Qrt random 360
- J/ ~4 J) c$ Y7 s
6 a$ W) @8 N: I: L$ z* K
fd 1
- b! s/ v( O, i5 f! s$ k! d0 D
1 X* c- @* X1 w0 [2 R
ifelse(other turtles-here != nobody)[
3 E. P: `. `5 D2 c
& i0 l, a9 E- J: X: a2 n! h1 N- a
set customer one-of other turtles-here
2 V4 `% N) G9 w1 q9 s

5 s) S) y- ]/ {3 ]5 c$ W;; set [customer] of customer myself
0 G8 [7 U1 ?1 R7 G7 H8 P
! E% r- V, R+ [$ w! e
set [trade-record-one] of self item (([who] of customer) - 1)# S! x0 T6 b5 k0 q9 w
[trade-record-all]of self3 e( s, Z% \5 ^, N- C4 ]% S
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

2 n: O, _$ N9 q5 Q$ H/ b* q5 V' i+ i
) r/ ]$ p9 z. {: f) O- ^0 |set [trade-record-one] of customer item (([who] of self) - 1)! a% o5 M6 P. U9 W# s
[trade-record-all]of customer

5 b; a4 r& W; E* a7 c0 n  z9 {% Q* I7 u/ @# u9 m  I
set [trade-record-one-len] of self length [trade-record-one] of self

# L2 \7 b+ p: d6 C1 L- l' K3 g; f. _% ]1 _1 ]
set trade-record-current( list (timer) (random money-upper-limit))

! E( y  G# q, M- w& I
4 a/ r# j" r# f' b; \& _ask self [do-trust]$ Z  X8 y- ?! x, C* g! E
;;
先求ij的信任度9 |* f- b+ D4 t1 W1 k- Z
: @; j/ B  g+ Y$ n& P
if ([trust-ok] of self)
- U% K, l' ^) J) q8 H: ]2 b;;
根据ij的信任度来决定是否与j进行交易[
) K+ z: u7 i* S) C' |) M' @ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
- o. R  r3 U: y1 B* C0 g0 X  D5 d5 I8 _0 {- {" n6 b/ _( }5 r
[
3 K( n% R! `! s; R  v# s

' U- ?7 ~6 Y8 H& f2 X; f7 Tdo-trade

' T7 E) T& o3 Y$ C
4 Y; E6 X4 l) X0 t% u1 bupdate-credibility-ijl
0 \$ e2 k; i; G5 V# x

5 y' s; X) e2 E1 y9 I6 Fupdate-credibility-list, @1 `3 k; |9 ?5 ]. C& \
" H: w" |0 d1 P9 z2 ^
; a2 _8 J, U. ~9 @
update-global-reputation-list
; d; [8 ^- z( X, g

8 c6 C2 D9 S- t1 ^, j; t: hpoll-class
+ c* l; s6 Y9 W: _) B/ Y; o4 {/ Y; |

; i7 u: B5 K; [$ iget-color

* b, B% t- W5 f1 }
' \8 M4 g: a  r: K]]
7 t" M# F2 t. {) w% \) s. ?, o, {& E0 b% ~6 H
;;
如果所得的信任度满足条件,则进行交易
; P) n/ `3 R, O  V
. v' ~9 {) y# O) x( \; J) k, V[
9 u4 p7 m; P$ X1 s1 B; \

: t; a' b" e2 A: k& V* wrt random 360

" A7 J8 h9 N7 Q9 M
2 r* H. r. ?0 H/ ~" `# e# J  `fd 1
- W* e. |8 W% n) _( \

. j% P& c! f! |8 E" V]

/ v& L5 e$ d6 P( f# H# i6 `# l8 Z. a. Q' t
end

4 H8 b) H4 M$ f$ a  L5 q6 W! M, }  U' b' _; Q' b$ x: h# b7 |( G
to do-trust 9 s; k) P* a0 i( z) }
set trust-ok False+ f$ F# y1 D/ @: ^1 e+ _5 k2 q
* C+ b" C2 ^) Z

) {- B0 R- `0 }2 t& w& flet max-trade-times 08 D- Y9 t( z0 [! G- O6 n- F8 z" z
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
1 U4 o. r/ }8 _. b% Clet max-trade-money 0
6 }( i. s. F/ q2 ~foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
$ L6 _1 |2 t4 T6 K; ]- x! e  {let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))/ ]9 `- U9 x) `5 X2 F) z0 v
* `) E" A, ^) C4 e
) k4 U5 o; u& {! e: T
get-global-proportion* h5 _9 e4 H8 i, D5 T; D
let trust-value
% ?7 i1 M8 a) y( g5 V4 S: 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)
# |7 K0 T6 Y2 Y+ B
if(trust-value > trade-trust-value)( ?& Y1 R% Z/ c9 m  o( `
[set trust-ok true]" w2 X3 m; g6 h7 |' X
end
% q  s4 m  Q5 E' d7 B# w% p7 {8 `7 Y! R! M( J. w
to get-global-proportion8 _7 q( O) {; N# k8 q
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
& k: j3 c5 [& _/ i[set global-proportion 0]# O/ e3 u3 k$ k! B  {
[let i 0
" v! i; b. g! a3 H3 Blet sum-money 05 s/ \' |' W5 K6 p. r. t% c
while[ i < people]( Q3 ~* c5 z' l8 N& M" f
[
( ?: P( c6 m1 |: Z8 |if( length (item i7 M& ?, ^! d( @' s" i) i
[trade-record-all] of customer) > 3 )

: g  O  B$ Y# S) l6 [5 S7 C[
9 E, m& w4 _+ m$ E  S) V& c3 Zset sum-money (sum-money + item 2(item i [trade-record-all] of myself))( y3 V* n2 @) I
]
, C) W$ p  N: @9 c, K2 h]
  N' _4 j6 u7 e/ ?* \3 U' I1 w$ Qlet j 0
8 p8 m$ G. R" [" }  b$ x6 m% Clet note 0
) Z; q( i7 U- K. r' dwhile[ j < people]
" m9 n: B2 q- F* C8 J( u  t2 ^  ~8 n[1 n# |1 H- `1 ]1 [1 Y) a
if( length (item i
5 Z$ ]. g, y7 v* c. \# O[trade-record-all] of customer) > 3 )
5 V5 h: k& I  b5 ]- `+ G! e1 n. t$ t
[
5 @6 g- w+ L5 i, D0 D: e, iifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
$ F  C9 C! i& S7 v4 C[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]0 Y! P+ q) j0 e+ L; S+ B+ y. a/ S0 L
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]5 O5 H/ z$ P( v6 V" q6 \
]
, |' n: S2 f/ p# z  z3 t]! l/ L) l5 V$ c8 h2 A  K
set global-proportion note
/ C6 {  \7 G* O8 g; T1 {0 D]6 A. X1 g8 T; A
end5 A& \6 \% t/ m6 {
- ~) L5 m+ q# U) Y
to do-trade
, |  e7 `1 d/ b. C1 b3 K;;
这个过程实际上是给双方作出评价的过程* G6 J- ~% _3 I$ z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价- H& p( [% `: c7 ^. ^" p) \' q
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
5 l: w* I1 a- }/ |# a# Y0 Hset trade-record-current lput(timer) trade-record-current
: f4 t! R& b% ~;;
评价时间6 k  K! c7 o! r+ p
ask myself [
# C1 E5 `1 x# l( A2 S+ }$ S9 K8 Pupdate-local-reputation
3 Z! }, @) ]( m0 o  gset trade-record-current lput([local-reputation] of myself) trade-record-current
; |1 Z- x/ ?9 j]5 u5 S3 |5 ^* d' G3 y! e
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
+ f8 i5 q: ^6 X3 X3 }8 w; K;;
将此次交易的记录加入到trade-record-one  f* t. N9 I4 ]& A; a
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself); ?, L/ R) J. Z, s$ b$ ]
let note (item 2 trade-record-current )1 t5 A2 z  V/ y% [, B* X( b7 |
set trade-record-current2 S1 W& S. _: p
(replace-item 2 trade-record-current (item 3 trade-record-current))
" _0 V; A/ c5 u9 O. N6 V" ]" a0 g7 m
set trade-record-current/ g: H+ D: M# N7 M" X' ^+ A
(replace-item 3 trade-record-current note)
$ {/ z6 S0 u1 M/ ]& N6 X! z- W
5 I! [  v: @4 n* O4 N! ~7 Q5 C4 K

+ B& x' \: B2 N& E9 Q$ D  dask customer [+ Y* L, W+ c- K1 h- s3 _
update-local-reputation
5 T/ D- R+ \& K6 gset trade-record-current
. H1 c: a3 b& r3 C4 F) y(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

+ q8 ]7 B8 b& J$ B$ K]
6 A$ p7 ]# w6 b) j8 f% W3 |& X% o# i$ j
3 j. f- ^( C; x* {8 i% z6 a
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer# W! z7 Z# n. \( t! x: w

* X. Y3 z) d5 k5 e" P% Aset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
  `# A5 Z+ b4 o% ~: I;;
将此次交易的记录加入到customertrade-record-all- [; c4 ]. o2 M- |& d/ y6 w+ S
end) H* D2 f  @$ i! v+ U/ {9 [, I
8 o" X: S& `7 J, f9 d+ y9 r6 a0 @0 d
to update-local-reputation. w" v8 R: G: t9 `! e3 @
set [trade-record-one-len] of myself length [trade-record-one] of myself
" o; F5 z6 f9 w& x
! x, I1 K- q- c; P# j  s
. \& L* m0 @% ^# |# G; z;;if [trade-record-one-len] of myself > 3
' U0 `2 k: @* w6 E! U$ n9 P- \
update-neighbor-total% ~/ r8 g( I1 n7 d% r# h# t7 D
;;
更新邻居节点的数目,在此进行
3 U1 i. s5 k& c- }' C! X' wlet i 3
' j. g% c( \" V; d3 h2 slet sum-time 0
* X( I5 g  }' O1 c) [- Xwhile[i < [trade-record-one-len] of myself]
+ r4 O5 X' W+ J4 }6 a- e$ F/ ?' h! S[( r. c0 o- i6 H2 `8 Y/ i5 V; V
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
0 m! D1 `' a3 @& g1 jset i6 E2 G" g' Y* d: H- c3 j
( i + 1)
; p# _) f2 T4 S3 R# U
]
8 Z) r0 t. L4 E0 w0 L$ e5 Hlet j 3: c  o( g6 Y6 w9 t
let sum-money 09 F9 L6 m/ m: e; ^  P$ ?8 ]
while[j < [trade-record-one-len] of myself]
" h( x2 M4 Y7 ]' G. F, n# c( E, c[
6 [* S7 u2 d' Tset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)9 Q& O: K$ K7 H* Y
set j1 @0 M+ j: I- A0 E! u
( j + 1)

7 ~; l) y1 X! ^4 Z7 H  f+ a3 y]
3 z/ X1 ?& z# flet k 3# ~: b) p: N( B8 M) W
let power 0. y; d! i. I+ e( n
let local 0
9 X7 n- Q$ k9 Y0 f/ B9 F( x5 Iwhile [k <[trade-record-one-len] of myself]
: G* f/ H+ q  ~. z$ Z3 z( f[
4 e8 l1 P3 B! n" e! wset 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) 8 |5 T9 E- K8 F$ U* }
set k (k + 1)( C) ^# z5 U1 _) }( |
]
6 U% R9 @( s# r; ~' x$ M1 _; t8 N$ aset [local-reputation] of myself (local)
1 W, m1 d: G& X% W9 _end  F8 q- ~0 Q+ F6 q, O, b

( ]* @4 A/ N! ito update-neighbor-total
9 `! w: E1 w: q) K% f# u  \4 c" ~' ?" O  D- o0 Q. x
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]' v; T6 M. A2 r

  {* m9 f6 g# t# H- }- n+ y/ Z
$ {# }% y6 x3 [
end
3 C4 h" B- l/ l6 d8 e, f
9 I" X6 @+ p# ]( x+ Nto update-credibility-ijl
. E! o  {7 J& ^
* C6 x# n' x+ W  E5 z) _  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。
- j% l# g1 l4 S0 J# B8 T- q. Mlet l 0
: w3 Y4 f0 z; R2 lwhile[ l < people ]: L; N% n3 |; p# T. P# \# {
;;
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- h, i" o: w/ z
[  W5 T0 p( p0 a, o' N. K
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)' j' L' m2 X/ w: O
if (trade-record-one-j-l-len > 3)
3 A" W" V$ l4 x$ `6 m; g[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-one6 P$ Z  l, t, i* E
let i 3
# U+ I7 G  Z# d& W+ a/ Q5 b& h6 Elet sum-time 0
( v) v  U- d1 \9 X- u5 O( n8 D3 _while[i < trade-record-one-len]
1 O( _' r) p& t9 }0 h2 W" m4 b[: c0 _6 Y: P3 U3 T4 U
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
9 q5 v; a. S: x3 t/ `: }6 {set i6 o9 D  v* L7 P( s* d5 P
( i + 1)

& t! g+ B( p7 q' \]6 `* P1 N5 ?+ `0 b4 T  Z# U2 I
let credibility-i-j-l 06 a3 T- J$ j! @- E: Q5 M
;;i
评价(jjl的评价)
& p5 w3 `; ?& a5 Hlet j 32 C& N0 L: V  [3 D9 i. u
let k 4  o2 f* R4 c, ~2 Q4 [% a
while[j < trade-record-one-len]) h% _( f1 z1 z0 P
[
8 Z  H7 Z6 I. l# d( n( N2 Q; R% Twhile [((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' D4 i$ _  I0 [7 L; B( v
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" C1 A: j! f8 x
set j: h1 E  L; l# N& |$ @: z6 i/ Q' \8 X
( j + 1)
) H# \; V" U* Y6 j' a
]
' q/ X7 `4 s5 cset [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 ))
) O# }; E7 e' T  e7 f. o/ u7 z0 H1 p. ~; a* X, C4 E

# t  m/ X2 K6 D6 D2 }: r- [1 c! Olet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
5 q2 j2 V/ Q9 e;;
及时更新il的评价质量的评价
3 }* {: E& l: b- t2 V% u# a  Gset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
+ q1 I9 d3 O0 n5 N% ?set l (l + 1)0 ~# {% u! b% K' s& B
]) v6 e) a2 D9 Q) b& V: O/ m
end
5 V2 ~5 `# r* B4 P
- _# I% B6 |- {4 zto update-credibility-list. v/ f" s' O  F; t3 v
let i 0
% M, h. X8 Z; f0 M; w- Z" e/ D( Kwhile[i < people]* n- |$ M, ]; M1 l$ J
[
3 ~, ^0 `5 M" ~# p9 ?  |* Ulet j 03 n. M* O* }2 G8 m5 w" ^6 s9 N
let note 01 B  Y2 t0 {" a
let k 0
/ f" }) C: o% P( G' _% Y% \4 G) S# O;;
计作出过评价的邻居节点的数目7 V. X; b' p$ X& @* u, O
while[j < people]  {1 O& }' s0 {# w6 ?# v
[# F7 j+ X/ i: w! d( z- A
if (item j( [credibility] of turtle (i + 1)) != -1)9 ~" n0 V; r/ n, z/ _+ a
;;
判断是否给本turtle的评价质量做出过评价的节点# ^* O) |- y$ U3 i% X, M# n. ?. M
[set note (note + item j ([credibility]of turtle (i + 1)))& r1 }" r% ~3 C2 N
;;*(exp (-(people - 2)))/(people - 2))]

3 ~, B+ h% @; @. Q, ?/ i2 xset k (k + 1)1 r: t. b+ E. T& w( P- x
]! B" e7 u. p/ R
set j (j + 1)
) z* d) g2 l% I! }]
( X& U- Q$ X- H5 q6 Y( kset note (note *(exp (- (1 / k)))/ k)* ]: c) T: }5 d+ N) ~" _! ~2 w
set credibility-list (replace-item i credibility-list note); u& M8 {" G# j, K6 K
set i (i + 1)
2 r1 c/ W: S8 M1 |' [. b7 N# X], k; d; B4 h9 h. L' X2 g1 Q9 _
end
- Y- l7 X6 b7 u/ y2 u* T  B& z/ p$ R" ?# ?, I7 o9 @. G7 G
to update-global-reputation-list
8 P1 d% v0 X7 N: @  M( F4 K' H% Wlet j 0
9 v# }) e' s3 |0 \! b4 c5 c* Qwhile[j < people]
2 l. a  l# B' e7 c[7 x/ n# B" I% L( t" _2 i8 l% \
let new 0
3 S- o* {% k6 D- I;;
暂存新的一个全局声誉7 R1 r' x4 ~$ g1 R7 m: V
let i 0
6 H. }! f4 L& U  \* ?7 K) ]8 _6 [let sum-money 0$ O& R* l/ u: J
let credibility-money 0
9 \; w6 W9 I# f1 C/ Rwhile [i < people]
% b, l$ U  Y! t: r[
6 D- q  B+ t* I' t" j5 q7 Dset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
7 y. W! @6 }( Q" c; Q, Gset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
  [* T; b3 ]" f; h3 R3 v+ m; zset i (i + 1)( H- `, ^! C( [3 ^  E9 `
]7 Q. H$ T" A* f
let k 05 [. {5 Z$ h. {
let new1 0# ^+ ~, P" H4 F5 e; M3 b  F2 {
while [k < people]* {' c9 E. ?) V0 U; B
[
+ S4 y1 A- n8 m5 w8 O( mset 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)$ Q7 o0 ^- v0 s2 b! r: i2 j) G. g
set k (k + 1)( [' d6 Z9 h5 G- m8 E* p
]' |$ G! z- ]- p; K; B& [* L
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) * Z+ P! U7 y$ u2 v
set global-reputation-list (replace-item j global-reputation-list new)- C  ?; q: g/ k# o* h2 f9 V, e
set j (j + 1)
+ K5 U) o6 }. d]* D/ z/ f" m' F6 ?! K8 q$ ~! R
end) s: _4 g: {; h, I- o5 u3 ~# U

' e3 v6 b& w3 r2 K6 C1 {1 T2 y) P" d& o' @" [* O! f' b% P

9 B) F- ]; n& i$ l; K& j( Dto get-color" l& l+ i8 l/ x. O# M+ Z/ e* H) I
3 `( q7 `8 [, \& p9 h
set color blue
/ g: P0 _, F/ C3 @8 `
end
1 X; {8 e4 [( ~, v4 h- Z0 w! i/ X" w9 h/ m& P
to poll-class
9 h3 W8 `4 _# oend
+ J4 G2 Z" G' `6 x% E9 S; a# W! j$ _- c) d2 k/ R( t
to setup-plot1
5 N% y" J( u6 }/ z4 o9 p* W
+ v( `& N+ ~9 |8 j1 q) [set-current-plot "Trends-of-Local-reputation"
' a* W3 k8 x* d* A- B

$ L# C& l( _0 I6 [set-plot-x-range 0 xmax
7 B* S' ?  Q* C& @" x2 E6 `

+ g1 p, D' Y7 y5 {! uset-plot-y-range 0.0 ymax

1 {' J/ T* W/ u( M! m& y7 wend
- Q- O6 n1 e/ E: G4 P4 h, b; Y6 g+ P0 E
to setup-plot2# N4 x6 J8 U) k5 f' g' \
, a. I) {4 o( _) V- i7 E9 C9 f: \
set-current-plot "Trends-of-global-reputation"

; E. ?, A! E; b  x) r+ ?  p! J" A, M
set-plot-x-range 0 xmax
; n& J2 N# _7 U9 ~9 K/ Q1 a- a
* D% v6 |6 m$ W8 |- h+ r; X
set-plot-y-range 0.0 ymax

3 E( }- B" I7 x: v% b/ rend& S1 N8 p2 i% V' C0 I- X5 ^

5 C1 |; j8 j' q' k; Eto setup-plot30 w: V' M2 ]( v6 J' g* L' C& g/ b

: ]: x5 x- j. m9 tset-current-plot "Trends-of-credibility"

$ @# {4 R' E) ?; u* f1 p' u8 }. e1 d: S1 g
set-plot-x-range 0 xmax

* X, q( Z9 E$ Q
( `4 a$ t" t3 k3 fset-plot-y-range 0.0 ymax

! B* S! Z% m! T, P1 O. Dend
' z: @4 f( y! A& m) Q$ S# W; i- y" ], r% ?1 L
to do-plots
0 H8 o/ z0 R% L9 `; k" Hset-current-plot "Trends-of-Local-reputation"
% M3 N/ t' |: t" u( @set-current-plot-pen "Honest service"" g/ d; r. I0 d' _# @
end
. f8 F8 s9 g3 {" {* H7 |6 X
  x9 }1 Z8 n8 d" I[ 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.) K% z' a2 D! Y2 K& T- w/ _
  l, e# I. `" U' C
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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