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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% @$ K% J. E, |to do-business " P- F" p* i, ^  X8 H
rt random 360
# e- q6 u$ O  M fd 1* w& R5 W! T# b8 ?& g
ifelse(other turtles-here != nobody)[
/ W5 }! q$ ~1 ^   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.7 @- d  f( x% \4 g6 l
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    8 a2 W; S7 G% ^  J0 I8 e7 j$ r
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
, J( f6 x9 b5 w( I% q) c$ x# N   set [trade-record-one-len] of self length [trade-record-one] of self/ A, P; ^; Z. i1 V6 v
   set trade-record-current( list (timer) (random money-upper-limit))4 R, N! B# W" j3 n
: h3 d" p" `" p& ?. I7 ]
问题的提示如下:7 [7 i, i5 u7 e8 q3 c

5 R5 Z1 ]  N4 P5 W! o  G  Merror while turtle 50 running OF in procedure DO-BUSINESS2 h# B; C! l3 W% e
  called by procedure GO* L# k1 h% [" z
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
- o' s) l0 f( J% B0 `8 M
(halted running of go)
8 \2 Q0 a/ c8 g6 b* Z3 i3 I. g( V7 I3 k0 {8 v% W+ Y6 t# v2 F& [
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~~! ]; }! [6 k3 w' W# |7 h$ B* S
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
/ }% t1 r5 k7 n2 ?* n* k: k1 rglobals[4 T, k2 R: D$ A
xmax
8 a, Y/ ?7 y; Q' L+ h  qymax8 v. q; D: O! U% G9 ^
global-reputation-list# J2 R+ M. i1 V6 w8 q1 e+ p
+ a6 O6 W  h9 j# Z/ C( H" ]
;;
每一个turtle的全局声誉都存在此LIST2 L, p- B/ C+ d( [9 W
credibility-list
& M8 i+ w  O" u% z6 n( k9 o  k;;
每一个turtle的评价可信度) C) w2 v1 w/ Q$ \& W
honest-service
2 W9 U4 U3 r; L, G6 M2 eunhonest-service
" G# r- o3 n: h8 Q, T, h" {( Moscillation
$ W$ Z, F) c7 j+ }- Krand-dynamic% U3 I4 J6 K% E2 j$ Z0 b
]
' F7 B& ^( V/ L1 Y8 R) f, p% m6 y( D" |  Z6 e
turtles-own[
7 w2 Z' Z8 P7 Y' C" V: O$ ktrade-record-all  C5 S( k. O: e. j1 ^) f2 e
;;a list of lists,
trade-record-one组成
; g  b# x# Q0 K9 ^! mtrade-record-one8 a) Q; U& V, j' k
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
9 r/ O0 r6 M4 d* r9 `0 F- z7 Y% q! m$ Z1 O. W
;;[
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]]( V5 @  x) ?1 ^* {$ E2 W! u) b
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]- P* {, c' U: k% T* u, a7 D" C) c; ^
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
- B! B; I  e8 e9 y" Eneighbor-total. Y# E. J) B# C5 f3 Q1 k4 X5 H& n
;;
记录该turtle的邻居节点的数目& F, E0 Q9 h, ^8 j7 q0 H& {
trade-time
; |3 `8 D' q' S! F1 \;;
当前发生交易的turtle的交易时间9 V5 ?: V* _, m7 ~8 f+ Q
appraise-give/ h. J& U- x8 j9 s. x+ S6 U
;;
当前发生交易时给出的评价, j% `6 Q* V, k
appraise-receive$ C& |4 S% f" [: C- ]
;;
当前发生交易时收到的评价: j+ Z* a+ B* E; l# d% Z
appraise-time/ C  O. Y" k2 P" x7 B
;;
当前发生交易时的评价时间1 D2 z( n$ \( b! ]
local-reputation-now;;此次交易后相对于对方turtle的局部声誉9 F8 {! q1 o% Y
trade-times-total) L1 T; k. y% G2 I8 s3 M
;;
与当前turtle的交易总次数
5 v7 P9 K' l. u& ?& U2 ntrade-money-total
/ m4 r7 Y# E' O# j;;
与当前turtle的交易总金额
& ^) L6 k, \0 G: F6 I. Y( \+ a; zlocal-reputation1 D6 X/ w( r. s( `
global-reputation
! \. f7 e' o! B( Z+ n. Jcredibility" Y  y* ^/ y2 Q2 h: Y. Z' n
;;
评价可信度,每次交易后都需要更新
: k6 o% U0 H# h/ T0 Y; Ccredibility-all
, F7 a9 h4 V; o- r8 m, F0 j;;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
2 b& _3 W5 k! {! V; q  `
. r1 Z2 ]$ z/ w- w;;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
1 m* G& l1 m: _8 G% a# H+ icredibility-one
( X8 c, T0 m6 Q0 C% J+ C;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people6 }; D4 t: T! K% _: D3 s6 k* B
global-proportion
4 Z+ L6 s+ j; v, U2 I7 _5 _- e% Kcustomer
! S% g5 U: I! b) t; t# _2 ncustomer-no' C3 }7 z# X$ p/ ?
trust-ok
! e1 W! g" n/ I, k% @: X1 Ntrade-record-one-len;;trade-record-one的长度
5 N  s* _" C3 u( q]9 `; }) C" Y8 X. _: s2 f

8 n: A/ z9 \! {# D* D4 I- \( G;;setup procedure+ v: V7 h; h3 d6 W5 A7 C

  Y1 i% b1 K* z" B9 e& w8 N& N5 Dto setup
: m5 a: [; O, r4 P7 D: W5 x6 D7 ]& i
ca
% [: g/ _6 ^1 u5 o8 Z
  a1 F% j4 p$ n) W
initialize-settings

# G+ f  n0 K. Z
8 p8 V: h$ l+ Zcrt people [setup-turtles]
) m/ W5 r2 h1 R# q  U' q/ k. L3 a

4 g2 v. i. P% V5 oreset-timer

2 T5 z1 w1 c% A0 a# l0 J+ k4 W3 L( U+ Q3 e
poll-class
) g( _  p# ]: c8 o: b" C: l" f

/ y5 \7 z5 |5 [setup-plots
4 G9 f& |  K  |( J5 P5 d
& z$ ]/ l, b: }6 w1 m$ m
do-plots

$ k6 M% J& r4 \! eend
' Z6 j* k0 C* J2 B( R2 u7 i7 s/ W; E
to initialize-settings
; z( j# N. S5 r+ T: b6 Z  q. B4 _: [& x# E" O4 o1 c
set global-reputation-list []
$ J" H3 l" k) k0 G
" |7 p  K# p: a; \
set credibility-list n-values people [0.5]

/ O3 ^) ]( Z5 v; |+ N: ^  t  S5 t) U% L! v% f; k# ]
set honest-service 0
- a) H, M+ D8 D1 R% v
( I8 @) z/ I5 K" \/ @1 R1 O/ n+ g
set unhonest-service 0
! q, A- n& ^# M* k

! A$ l5 m! s# p/ Z# }set oscillation 0
! m2 l0 N% u$ L$ p( w+ M1 ~
; s" u# j8 H4 V1 a& P
set rand-dynamic 0
% Z9 X) P" Q1 U
end) f/ {* R0 p" ?& o9 _
# d! E3 r6 l+ q4 ^  o
to setup-turtles
: o3 l0 g" f) u# e4 }8 lset shape "person"
' i. q3 l- m$ w8 S. l5 `# N/ H7 esetxy random-xcor random-ycor
4 F9 p( y( o8 N7 ~7 F  p% oset trade-record-one []
; Z. V# p3 ]8 y$ ]5 p
4 `# E  L! n3 W* l, |. |2 y
set trade-record-all n-values people [(list (? + 1) 0 0)]
* b' m6 W+ g% S# }% A$ L2 ]

  ^' t* [) w- c6 H# e2 i# l- dset trade-record-current []
  |6 K' p" J/ g6 y% Hset credibility-receive []
$ `4 n/ V4 {. f8 Z7 h5 uset local-reputation 0.5
" b5 y3 a. a& f0 y  P# rset neighbor-total 0. P0 v& C: m0 p% Z( k
set trade-times-total 0+ }  v) u* z2 u. k* `. S
set trade-money-total 0; L  P+ _( ~8 Z! }5 y& G) S
set customer nobody* f2 g& C; ]; {. U; F- m
set credibility-all n-values people [creat-credibility]& ~; H/ I0 F; q1 L4 B
set credibility n-values people [-1]
  l$ B( R" ?5 a1 r: tget-color+ m: q1 T3 z. _( z6 b! o
- E/ A+ {& [7 ~0 P- a' _
end! }; x7 P6 e6 x! d9 M

& }1 ]+ g  u6 E5 }to-report creat-credibility  i# [- R2 p& x1 {, K  k# l
report n-values people [0.5]: J9 O4 x# g' v7 Y: o6 D
end& C+ j  ]5 s; Y8 x3 S
" o# b0 @  `  D! e
to setup-plots$ [% H' ?5 G) a1 l3 p0 M5 ?, u$ L

, m8 @. @6 F0 }, o7 g* Pset xmax 30
0 E0 ?, N; B) j9 ~5 @, z

& q4 y8 W6 h. u! q. \3 U9 [set ymax 1.0
$ s4 u" I; Y$ @. U

+ o# ^# t, ~" f3 G& ?6 Rclear-all-plots
3 r" T8 E/ K9 b$ @
! S" N, x5 h0 G9 X. X( _
setup-plot1
7 ]: v: M$ F5 `9 _" }) D  H
% m1 R$ w, v; F; F8 Y3 }( s
setup-plot2
4 C6 k1 W! a2 j# a1 q2 y  c7 C5 z
( @# {: k7 f& C; T2 O8 p' ~
setup-plot3
2 l/ ?$ T* z& j4 P
end
3 @3 [- e1 [  ~: }, b* }6 b3 {& a6 q+ s
;;run time procedures4 o2 l* T; l* f6 d( k
- |- {  E: ]+ R
to go
* K6 a; I  h/ X$ G$ C
9 v% `+ M9 N/ Z4 O3 Q- Jask turtles [do-business]

: B1 N$ `# N) |" g- Z% kend
& S6 H7 R! y5 c& X% G- h3 Z! x& W! Q6 [* l' n/ u
to do-business
. C) |) [2 Q' H" {7 C. `) u' i
! m& R' ?4 X9 q" L0 m
- @2 X( |9 Q- h( h3 Q
rt random 360
# O( ]3 v4 ^; A( j* t2 ~5 o
7 k# `) y4 Q  j* D* F
fd 1

: D6 N. a% Z9 O+ i+ @1 q/ {
& l/ f4 `  T4 b  ]ifelse(other turtles-here != nobody)[
# Y! ^# G- a4 Z  h# ?% S& G
6 s3 A( ?' K) I* d3 `
set customer one-of other turtles-here
  t; t& b/ q5 J( T" x

( O$ A- P- y  E9 Z# a* C9 K: r, P;; set [customer] of customer myself

7 N2 X3 L3 Y. u( `9 b) V6 P* n5 o9 z/ b3 D4 e, Y
set [trade-record-one] of self item (([who] of customer) - 1)$ b- f- U7 g: q
[trade-record-all]of self7 K4 u8 ]9 D* k# M) O
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

+ E- i: S$ c" T3 f' @8 i; V8 ]% P
6 t) C7 l( w( b$ @: k# nset [trade-record-one] of customer item (([who] of self) - 1)+ G$ O% d# d. {5 Q
[trade-record-all]of customer

1 x# \  S* g7 S# x* E& j1 t; `: s* w" V4 k: F# r
set [trade-record-one-len] of self length [trade-record-one] of self

( [" {/ w) r& D1 N
9 Z; E6 Y3 [6 Z' G8 ?) U: F  O# _set trade-record-current( list (timer) (random money-upper-limit))
3 }5 t1 H. L2 c0 f' _5 m% j

$ |- v, p+ Y2 c& d* T( dask self [do-trust]/ e8 s9 c7 Y" p; w! l
;;
先求ij的信任度/ {: b( Q# T$ ]
4 x+ F/ b  |) m5 F" X3 s
if ([trust-ok] of self)
3 F1 a6 {+ x6 Z2 M$ V* Y;;
根据ij的信任度来决定是否与j进行交易[
, S/ h4 T/ p  v! eask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
/ X: p0 _6 m) Y0 H: u6 \, T3 A/ @5 v# F
[
8 g) r4 D8 F9 c/ G, n( q, i

2 P: |8 w1 C; |5 j. p5 t1 Gdo-trade

7 K. U' r! I6 k/ b& P& m0 L, {- ^1 @9 Q% n
update-credibility-ijl

8 G( h6 P8 m2 C2 g; r7 j! s; t/ {$ q7 f' x9 E
update-credibility-list
& h+ [' x; c: C' r# L7 ]/ @

* V5 i; d8 G( m; h' ?) K( m- F0 N# n, W1 |0 G8 I& r! h9 [1 x* q2 G+ i
update-global-reputation-list
  t: J- \/ y9 ^! H

: J: X9 J/ t8 ?/ [: fpoll-class

8 t5 ]( n2 A  Y( H
0 {' j7 b2 ]4 ~4 O- dget-color

9 ~7 o' z8 M) M7 R: _( q& O3 H. Y1 P
]]
, a+ q9 J& ]: [9 [8 {' L2 J/ L) O" X7 r
;;
如果所得的信任度满足条件,则进行交易" n1 N2 g0 C4 T: I% y) E5 X0 t7 j9 D

& N0 R: e, B( a! h[

, o& Y# u# O3 ^! q8 A, F
3 M1 c! A5 o6 a" k- ~% ~8 J- ]5 krt random 360

" `* Z7 U& n( O* C6 w9 n# C  K& [6 V& _- u5 I
fd 1

* t: _! T! M7 ?9 [1 Y
8 e* v3 Q  i; E/ L/ h]
% N# P( P9 y2 W& ]2 Z

  ]6 }1 V  k1 s& j$ send

/ M0 e% n% ]& L- z6 ^. [4 P  N4 V, P% u; b1 E" s; a# ~
to do-trust
$ T  D" U5 p. ?set trust-ok False
% e% ]/ o) D& Q* @* R6 B# E
7 g, i, f9 W& T/ D1 K) W

* ]8 J: R/ C& L0 G7 t) l0 Hlet max-trade-times 0) x; \  r1 A1 e, J7 K
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]& K& j' S9 c5 |
let max-trade-money 04 x5 S; n  m; [) a" Z
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]  b% ~. N* k, F
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
/ w% [2 {/ S! Q: X2 q
( x4 G5 C, ?5 P

& Z. Q2 O+ @. i1 N" ^get-global-proportion
3 Y! Y2 \) ]; _* x8 ^- A' J) qlet trust-value
' r& E/ K. q1 g) e" ?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)

9 |1 b- e/ T# o) S, H' R% Yif(trust-value > trade-trust-value)/ g3 r, Z8 J! o- G/ _
[set trust-ok true]
& B# J/ M: \: c8 ]! J/ Uend
* h/ o& T* Y% I! N9 I9 _5 D9 o' ]" S' ^
to get-global-proportion8 {, x) F: v; u
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
# y7 y5 X9 e2 H( D# H8 k& b[set global-proportion 0]
  C1 E& A+ @9 u8 H[let i 0
' _* q& u$ X! v2 Jlet sum-money 08 \# p% U0 T5 V: p" i8 V
while[ i < people]
$ }; u/ ^% R3 q[6 M- \$ |# L& w3 I
if( length (item i
" \6 i5 I) e1 I- L1 k& {[trade-record-all] of customer) > 3 )
  \6 r- Q3 R% X4 |0 Q0 l5 E5 x1 v
[; |# {# W2 m. z0 h" V8 M& ]3 X
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))  U, z  e$ F: g( X4 ]" }+ m
]
. Y2 W/ E' H+ D" a7 _( l]2 K" _2 B; c5 q4 ?5 u8 I; E& I% g
let j 0
. r/ a  B4 A5 p6 s: {# n+ U7 @- Llet note 0
5 E4 @" G/ M0 A# Z' z9 lwhile[ j < people]
) D6 g- i9 ]- L+ e4 \[
7 u+ x4 y" J8 pif( length (item i! V+ A. D* _  a7 C, n  s; o" l
[trade-record-all] of customer) > 3 )
$ f# ~. o0 @) A+ T
[0 s* L; I. [" d1 q. B8 `% F& I( P7 M
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1), `* G3 y; u2 G& ~# }8 N- r8 Z
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)], U  v5 Y) Y- N8 |+ ~
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]' X' r; |" x* r1 a! \# z
]
0 }1 \; T9 n6 k' g! {) d- E7 E]
* A/ _: f: ~4 e7 x; |: dset global-proportion note5 G+ F- W% V& G2 ?! w, n. l9 w  Q
]  ?' g1 k, W; p1 {5 A( O$ `
end
: C7 O2 I) t* [: @) v
* \; w9 x3 b' K& d, Z; c9 ^to do-trade
7 e4 }: o5 x& M" [;;
这个过程实际上是给双方作出评价的过程
, v  F  N6 R3 J2 n3 cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( W/ f6 _8 |5 c/ i2 ^5 f( o* rset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
& S5 k, A8 c, o. [& wset trade-record-current lput(timer) trade-record-current8 n) [2 L( W6 ~( T5 @5 r5 Z2 ]/ a
;;
评价时间
: P6 Z0 x0 F6 g1 J/ Cask myself [4 M( }  u8 k) r
update-local-reputation* W2 Q0 F2 r% v9 H. N' B
set trade-record-current lput([local-reputation] of myself) trade-record-current3 h6 @' ~, N. N' M& |1 }( e$ v5 ?3 ~
]8 ]- j; E# O; f0 w0 J
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself/ G' e$ T4 Z) @* }8 R! t
;;
将此次交易的记录加入到trade-record-one4 q3 W  t9 F. _. u' E6 R
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
5 f- T9 O/ N9 E; ?6 |# I, J' m8 p2 \" Zlet note (item 2 trade-record-current )( I: P7 O6 x( t. g
set trade-record-current. I9 l9 n" R6 U6 }# g  J7 `5 {
(replace-item 2 trade-record-current (item 3 trade-record-current))

8 W! D8 Q- k4 W* |set trade-record-current! K2 N( h5 q( g: C* K7 U' s
(replace-item 3 trade-record-current note)/ d: P4 H0 T* D$ r
7 d  I' f- S& [0 `' }6 m( T
: a  z  ^$ V! i4 \0 h+ [
ask customer [
& |/ F9 o  s& ?update-local-reputation
' \7 N. @9 t4 @- Q5 _2 C1 X- x* y1 pset trade-record-current
' O. {2 K  n2 y$ P. S(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
, F$ E& w* r$ X' g8 @
]/ r: @1 s! N- X, X$ `: _

# e5 ^3 h' e! a& E
. N4 V( u* W# R
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer; L: K0 O, ~% W- o$ T; B2 R
, j/ I3 Z: [% a0 i6 Q3 d" n" O
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
/ h4 W/ c; N. v' N  ]7 S: m;;
将此次交易的记录加入到customertrade-record-all# }3 a* Y1 U( [5 l% h7 K
end, S$ p4 X. B, A  m; r5 o$ {

6 ?4 t6 A& J. z  l# J) q7 U7 Yto update-local-reputation
, A3 z2 C0 u' }, Fset [trade-record-one-len] of myself length [trade-record-one] of myself; T* f4 |& w5 x  }" I' _
8 w% N6 X5 F' g) c3 R5 T0 c
9 v4 M  Q' y# G' Y# s% z. g5 s
;;if [trade-record-one-len] of myself > 3

6 j8 h4 \, A( dupdate-neighbor-total9 v1 X' p. C9 h! H
;;
更新邻居节点的数目,在此进行
7 [$ h# O+ |+ ~7 R( G* p4 rlet i 3
* A% e6 G+ A& f$ H3 Glet sum-time 04 U# x) b* {0 T: X( `
while[i < [trade-record-one-len] of myself]
1 y* ^- s2 W# V. _8 U[
$ @# y, W  ~2 N9 r0 |8 v* Xset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )% U# p% }$ R% X( D
set i! x' X. ^$ O& ^  ]. M
( i + 1)
. C, s7 ~" ~+ H7 u% H( c
]1 }4 o3 u8 u& R# E, E+ N$ |
let j 3
& c( q# ~  Z& r# ^' _7 Klet sum-money 0
2 u* N, C$ M( t: o& u  [  Pwhile[j < [trade-record-one-len] of myself]% t: {; v. E# q
[
8 O/ K* ^7 \; s1 G4 oset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)0 ?9 V7 s7 ?6 \3 T+ F0 k5 m
set j
5 B3 ?* r% {; |& o0 K7 x( j + 1)

( N# `' f) I4 ^1 q]  J- B( f+ @9 m7 P$ w% w! O
let k 3
7 j/ C) U. O- J( x6 ~  _let power 0
; r' }5 s# F+ ]3 z: G4 {let local 0( s) o3 _0 L( f! t" a1 Z
while [k <[trade-record-one-len] of myself]+ |8 H* X0 ^% O& b! k
[* q, J- X- V/ B- z  Y' z/ B9 v
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) - k$ J2 ?# F3 w7 K9 U) q7 }
set k (k + 1)" V2 q& D/ G/ z8 V" }" M, `* z% V
]
4 H: o# T: x5 ?4 r! @, pset [local-reputation] of myself (local)
# o2 s% k' F3 _7 u, F* Pend; c+ {5 P2 X- w  E
9 W- y5 t. x7 [0 z4 O0 _
to update-neighbor-total
( B9 a, J# \5 ?" M& H& G- L& r3 @! i' S9 o0 q1 |* |$ M
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
3 d' a1 L+ O2 @+ D4 d- h: k) h8 ^+ F" D: p& F% S

8 i, X4 W2 c: Pend
+ |+ z4 G$ P8 D6 r$ G( ^- N0 D! O; H8 P& B4 T0 |
to update-credibility-ijl 4 e9 H& H3 Q8 K1 @% A/ e& ?. w

8 a4 R0 {; O+ m;;
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。
, W* n; i5 V* w$ S) K) L( o$ alet l 0, Y- g) P$ m% d3 f
while[ l < people ]& N# V  B8 G* D" Z+ 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% F9 s5 o: g/ S/ p+ _( o
[
, o. Q6 n6 a2 a1 G! M4 Rlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)9 w9 x7 ]4 D1 ]' E" E. q
if (trade-record-one-j-l-len > 3)* K/ M& x; w) }% s5 Y8 j
[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/ ?' @( F/ e4 v& @
let i 3
, x. e1 n$ }0 Z4 A* T6 ilet sum-time 0
$ ?, ^( @' D5 T4 }' pwhile[i < trade-record-one-len]- e; w7 b8 P# N' \3 m
[. v+ o1 Z" a7 v: D2 b9 N
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
* S( F" r% y1 N, w0 u" ?, i2 cset i
) O- q' N3 f7 b$ u' l( i + 1)

) _" t) J3 L# S! Q]  z( A* V9 c8 G& E. \
let credibility-i-j-l 0, ?" _# T5 y% W9 P$ S# ]2 H
;;i
评价(jjl的评价)
; _/ f$ x" d2 B* ^2 G/ j2 ^& q' I7 alet j 38 W2 H# O# _: }# K
let k 4" O. |9 s6 h4 t% A/ t
while[j < trade-record-one-len]
: p4 i2 ~/ f: G, L2 z! s3 R0 K5 R[
; [, }3 m3 w' H4 R2 v1 Cwhile [((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$ e+ t. b1 ^% z) S  U. F
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)
2 f. _5 k" F3 A! k) i- z2 S+ Bset j
; k2 n  a+ `; Y& Z% {( j + 1)
5 o' |, n: s# `$ M$ x! b
]/ T3 a% W! O: e: |1 h) E" g5 I: F. c3 ?
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 ))
1 J' y7 i% P0 }
/ X* L+ {1 I  u8 y$ U' I3 j" J
  e6 Q1 [9 ]2 Z% F& G: _) g
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
# u8 [" g1 a+ g9 L1 M  H$ i/ ];;
及时更新il的评价质量的评价
" t" q6 n+ e: R; T4 c; l% Aset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]5 v! \6 h4 r3 c  V0 h2 F
set l (l + 1)
) W0 R: z% ?3 S]
) a/ A9 v' \. E1 s# rend2 w3 Q3 h- z! |9 @$ o% ?9 j

! x0 c0 F& g- f# n; [4 Y, x$ `1 dto update-credibility-list
0 c6 T; o( r) Z$ W1 _$ ?  ?0 `let i 07 d* t  X& |4 t0 W& w
while[i < people]
7 F' U2 {3 X# J! z. [[
# w* b6 P( d  z2 |% olet j 0
( _& ?) g! U" c+ rlet note 0  n: i5 p+ M) I1 E9 s9 e7 ^3 O( D
let k 0
6 w8 \9 H& V; Z9 w( ?5 q;;
计作出过评价的邻居节点的数目
; J2 E% A9 X0 r' lwhile[j < people]
* L& q" H) R8 x5 o& o/ e[* s# `- k) R# s+ Q. i
if (item j( [credibility] of turtle (i + 1)) != -1): G) ~/ V( O* t/ k0 V/ n& _
;;
判断是否给本turtle的评价质量做出过评价的节点( J! Z3 ?1 ^' i4 {; R5 P" p, v
[set note (note + item j ([credibility]of turtle (i + 1))). D7 l; e) h; O5 b
;;*(exp (-(people - 2)))/(people - 2))]

/ H4 M. D4 T$ x: Xset k (k + 1)
7 a: I( g- z) _  O% f. |]
9 V. K. U0 I7 C0 `7 N$ Y. `set j (j + 1)3 [0 z, W2 j, i6 y. l
]: ^! {$ |3 D: o* @& N! X# k6 e
set note (note *(exp (- (1 / k)))/ k)3 Q. `( y9 e5 j" y/ c. ?1 W
set credibility-list (replace-item i credibility-list note)
1 t8 f& z. U+ X0 O1 {6 S1 N7 y$ ^set i (i + 1)
: }* q4 c( U1 |% ?# Q/ [% ~]6 X1 E6 ?7 p/ B1 [4 ~& Y) j8 S
end# ~- E0 G8 |3 `# Q9 h

/ x- @1 m3 y( u8 P! gto update-global-reputation-list- P+ n' k; f/ E
let j 0/ }8 G/ }, O- }
while[j < people]
9 u8 T# {2 A; h+ [[
& I' G$ z3 `* @2 v$ K3 R/ P: ^let new 0
4 S4 Y, u: y7 f6 k2 R1 _;;
暂存新的一个全局声誉
' d( ]& L- Q' jlet i 06 ^, X8 x9 r2 f  u
let sum-money 0
- p7 a9 W  R7 i0 P( Jlet credibility-money 0
9 `) k/ L9 O$ ~% ?+ Vwhile [i < people]. h. L6 T" O( n, V
[2 D9 A5 _, n6 H" b3 e
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))- A* c0 H' u1 x7 h
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
: X5 T8 f/ F3 ~6 p+ rset i (i + 1)
/ m, i0 t8 }# V, \]
& i( R' |0 R5 u4 n7 llet k 0
1 W; C0 J% A5 G( i# A! }( wlet new1 0! j+ t: h0 F& a- X# S, V
while [k < people]; U9 T# \8 M3 F* M1 ^% K6 f( O
[$ E  V7 D. @# j" [% z/ }
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)
# n: t3 J1 [9 C8 G- l3 Bset k (k + 1)
& j6 i; v, N% i( z$ e0 s]
" ?" W- \( g$ ?1 d. `, k# sset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 0 o3 X, q. d! `0 G7 u. c. j
set global-reputation-list (replace-item j global-reputation-list new)  X4 H% r9 l% k0 k. w, _: g
set j (j + 1)" Y; a" U! M/ {# w. C9 B
]( f$ z% R! k$ C
end8 k0 {' O9 m7 \! b. o: l4 ]- z
& g4 D  V' F0 ~6 E6 K

1 i% i, k8 Y* M" a, x; b: e
: C% c9 U4 f' ]. U4 hto get-color8 u: J& k, W- c* V4 o8 h
' k4 q* ?) E7 o# U
set color blue
3 G: F8 o) G& h0 L, N
end
% I2 L5 w2 t2 T! {, V( z) P+ }+ e
# a+ B5 w0 J. w" c; [" [/ F5 m2 ~; V2 Yto poll-class9 D0 L6 A% K, ?4 p& i
end9 K- v+ M; M% C4 T: P& f/ @
& I4 V( L' R& p. Y( P0 V, `
to setup-plot1( B  z  I! L$ {# o4 R
3 k0 r& x5 v- w/ u
set-current-plot "Trends-of-Local-reputation"

6 y3 z7 p, p/ p; W( B& ?, `, u" B
set-plot-x-range 0 xmax
5 [+ u( }. S$ _  l
: [1 Q# D5 O/ j# y  U
set-plot-y-range 0.0 ymax

' ~# I" E/ X6 m" Rend+ M' ]4 h; e2 z2 g7 S# c
' o) Y3 Q# ?1 g5 g" f
to setup-plot2
1 V' T5 Z1 ?% i) ^' p: u) Q/ P4 ^/ O2 X4 v
, J! m! }& E$ N+ Lset-current-plot "Trends-of-global-reputation"
* ^, b1 S. S5 A6 s2 ~

. V( F, t: |0 f/ P* p: |2 [: U5 N* L" gset-plot-x-range 0 xmax
2 |9 w4 Z3 w9 b( N. G, g1 M
, X3 X2 t# j) F. }
set-plot-y-range 0.0 ymax

& m+ B& V0 ?* e6 jend2 Y* e6 |& d$ s% q) }: T+ M- d

: `4 d1 y7 ]: W+ C* Gto setup-plot3/ Y5 z! o5 r/ o& U

9 D* T  M# J- n" c$ @set-current-plot "Trends-of-credibility"
( d4 [3 R8 O# I1 ^: S# p- I
9 c5 ?3 F9 e- s2 ]5 b$ f
set-plot-x-range 0 xmax

  E  u1 _# w( I
! R5 t) I4 s! \, nset-plot-y-range 0.0 ymax

7 T( I, Y: d6 X, Tend
2 }" M: C' W5 O  P3 v; S) ?- @4 k2 k. e" |* G0 z
to do-plots. W9 R. p8 B5 N1 a/ M) ~5 S
set-current-plot "Trends-of-Local-reputation"
: y: o) N$ \$ u" }7 [set-current-plot-pen "Honest service"8 a# Y7 M& b' ~" N  ^# q
end
" o- t$ p, r% U% H- Q1 c- w4 i, \7 x; 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.7 g8 q; B$ Z; L, t

! c) J1 [0 c" M! [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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