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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:
5 o8 \4 M9 H  W* R- xto do-business $ `+ {: Q6 J  i
rt random 360* E  d; b/ ~6 J  t' w, g
fd 10 G' z' W+ P! ?  W# ?- H  ^
ifelse(other turtles-here != nobody)[
7 g# e5 u+ h' k% ^" v9 S$ q: V   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.
0 F5 ]' a7 z) Z  {2 R& E   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    & T7 I( v/ [; L& f. L: j7 o  D
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
! H# [& N/ d9 |" z! s- A   set [trade-record-one-len] of self length [trade-record-one] of self0 V6 t9 M9 b6 _2 l+ `- Q% R
   set trade-record-current( list (timer) (random money-upper-limit))
: F$ Q6 \# R. O' Z; t
( _+ ~/ z# e1 L问题的提示如下:
, _/ W2 q* [# N) b" \8 M8 w9 d( u3 L& I$ n6 B. t3 T4 l
error while turtle 50 running OF in procedure DO-BUSINESS
, o3 C0 i/ u3 z# i8 b, ~  U' w  called by procedure GO: q: u% m3 C( C, z) X. p
OF expected input to be a turtle agentset or turtle but got NOBODY instead.' k5 d. P0 J$ B( X2 [0 n" `# i
(halted running of go)
! {! s3 ?7 h  w& C7 p/ K& d; a7 o, Y
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~~9 n) W) {' k" _5 d' c
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
4 P( a/ X! B4 l' e' V& Eglobals[
( z) f5 ^2 Q! s( U2 j/ V; D& Cxmax
) b! @# F. E7 E6 i2 B! A* Wymax/ _0 |. D& m9 \, T6 m& S, x5 z0 m
global-reputation-list5 H5 [/ O# o3 ~
( k* R' G1 ?2 @5 o4 Q3 u- v# k
;;
每一个turtle的全局声誉都存在此LIST5 I# h, y% f# f# |
credibility-list
( \+ _+ K- E+ g% l! h; P;;
每一个turtle的评价可信度
  ^* a7 V6 x6 M. R! Mhonest-service
! b; Y: @; S/ p3 C, f" H% d1 Tunhonest-service* R6 A" r+ g! T- M; f
oscillation
7 }: b# I0 q8 S" b9 Z- J, brand-dynamic
% b0 U3 D4 L2 h# B3 K]
' C3 _1 f* |. R; a" X9 C/ n+ {
, H- i' ?# z/ u* ?! e! }turtles-own[5 X5 s  r- B+ \) q; o
trade-record-all5 ?9 j; k: k' R0 _( n
;;a list of lists,
trade-record-one组成
- q4 X% \' H. I# s+ }trade-record-one7 V8 [$ a* @) q* w, }
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
. C  B" {* Q' h) M- t* m* b* e1 i: |' g, V1 P# e8 X
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
8 ~& _( ?+ Q- W0 e; p& ~% @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]
. V' j% t0 z: y) [/ Q( h- u( vcredibility-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
3 y+ X5 M, C. j5 ineighbor-total9 m& q; C, L) M  `! Y
;;
记录该turtle的邻居节点的数目
1 S! G1 \' n$ `+ h% q3 vtrade-time  h/ W$ E) w7 d$ o5 M4 ~5 `
;;
当前发生交易的turtle的交易时间
% P2 Q& N* N( l5 N# O+ X3 yappraise-give) A+ {2 p+ d1 X0 P" L& v& F8 B) p; e% j
;;
当前发生交易时给出的评价/ q- a5 }8 ^, U3 u3 |
appraise-receive
% d* \; F! d% d! F( ~, |;;
当前发生交易时收到的评价
$ X, {. G$ X( @appraise-time
2 E8 d& g! j: `# {2 T4 o/ M' ];;
当前发生交易时的评价时间% M7 Z% e' E3 S
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
" d1 Q9 N# z$ {9 |trade-times-total
- C' w# J8 D! @+ t9 q8 b;;
与当前turtle的交易总次数6 c9 m( J! P: Q# l- K+ T
trade-money-total1 L3 ]1 y& o' X2 N  }
;;
与当前turtle的交易总金额
6 y. d3 g# B' P- T6 ylocal-reputation
% L! L) O" C/ q* G9 ?3 w9 iglobal-reputation9 H# D7 {8 r  j1 i  v" m
credibility
- Z5 n7 W. V1 ?/ m  @;;
评价可信度,每次交易后都需要更新
1 t# B, d, q& n; vcredibility-all8 C- b* T0 z0 ~( _; }# X
;;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 k, m1 l9 y  t+ Q; j- b( i1 x6 M9 Y9 ~+ Y1 ?( c/ L8 O1 K
;;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0.52 F- p& T  u( J7 ^# M  ~6 I+ w% s
credibility-one' z6 d. B' ^6 a. ~& D8 u
;;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$ `$ Z4 K) ?" Z9 s0 V1 M
global-proportion
% S$ N, X2 ~3 b! W* bcustomer8 q* E  ]6 }/ h3 S
customer-no: M/ P# k4 d% [4 F9 z
trust-ok3 }( K  D7 K% Y1 P
trade-record-one-len;;trade-record-one的长度
1 V6 Y. K( o: e( ^* F]
) e& M) ~6 ^3 I1 r2 ^8 m7 f* L$ V7 J8 z$ {+ r0 d8 v; Q& C  d8 S* |
;;setup procedure! M5 {  ?8 f/ {2 D7 g4 M, i! a: O1 v2 S

( `9 _" Y6 r# w2 r5 Hto setup
" ^& e+ @7 e3 i" r) L; M& A/ ?9 T. q) c) Y/ p" n
ca

6 D% r, J  k- b2 G
" ^5 t: c! w, T- K" t2 y; ^initialize-settings

# N+ O3 S& J- B9 U+ W! H. N
9 J& a) M! ?# Acrt people [setup-turtles]
9 B* D& K2 q( G

: Y! ^1 L5 J8 Kreset-timer
: o7 x  X0 g7 M

& \7 P! v) [1 Npoll-class
0 C* j. I6 w9 z' e
; I, p( b9 W+ t
setup-plots

4 ?/ F2 y' O5 L" h. O+ d' `
# G6 A% j# N1 O( O0 n/ i! ~do-plots

+ |% r% B! L- u& i3 C, v) V! r$ Zend6 \- k4 F0 ?1 ], q, z5 m
6 G, `& b! S( R4 i7 N
to initialize-settings
; q4 U; r, p# B( J) Q
0 |( ~$ R. o, Y& X- N9 g$ e% l* tset global-reputation-list []
* {0 o' K' P- j+ R( Y) C
% l: t  b! g0 x3 n' J
set credibility-list n-values people [0.5]
6 g; ~  o) p% y9 ^' _" c3 y8 Y$ o' Y

1 @$ C+ s4 v2 r4 \- Y* |  _set honest-service 0
  M3 }7 T8 S8 F$ l" Y+ ]
4 m- @# ]2 F  }/ f: H2 B
set unhonest-service 0
% @" E" i9 o0 v' `. j& {' w( ^! y
8 i( g: v! L2 F" Z
set oscillation 0

1 |% F, h4 ]5 p3 m" `: t9 n
" N& F  k: D6 v. \2 k0 F) O% Jset rand-dynamic 0
& h! g; v2 U3 P; J. G9 d! z
end; N: t) H9 a, g0 K
% V  n/ ~( O0 C
to setup-turtles 6 J( F. U4 L$ O& c3 U1 B  b
set shape "person"
: I7 v# y. m8 g7 Ksetxy random-xcor random-ycor
5 o# a7 G) L9 i( C; x  p. Xset trade-record-one []
8 ]$ u3 \: ~% ^' Q& G. D2 }  q
% R$ E, e/ ]" U  h! \1 m+ J
set trade-record-all n-values people [(list (? + 1) 0 0)] + Y+ |% {6 C; t$ z9 ^; y0 T7 a

5 l; U4 h! ^  {4 Q) r% Mset trade-record-current []3 o  b4 b' n& M- D
set credibility-receive []
  M0 `" U" G4 a. e2 s9 T  zset local-reputation 0.5+ V6 L" @' X: D/ C, G% K0 l
set neighbor-total 0
) ?) b; Q, O, Iset trade-times-total 08 A+ S7 U, u" \& ]9 i& C6 b( U
set trade-money-total 0: Z% P/ O* \1 f' J
set customer nobody
5 y/ H- I; h( U" Q; ?0 g7 H  c, N$ Oset credibility-all n-values people [creat-credibility]
$ D6 s, {3 e1 l: l% Y" Dset credibility n-values people [-1]) w+ V. J1 T2 A6 P& R
get-color2 S* J4 W3 `+ G3 r- ?; U
9 x6 B9 S5 k4 t5 R, u
end
, m2 s' l2 Q8 O, x2 G! a/ m7 A- ]8 t2 z9 ?: z
to-report creat-credibility) t" p/ ^5 j; U, r
report n-values people [0.5]1 @. k9 x; {: W8 O
end
1 s, y  n8 ^9 @  V& x
4 B/ Q* E! E( K% G* l3 _* Ato setup-plots
2 @$ i5 T2 `& v3 R3 m6 Y* s2 s* J7 g1 Y% ^$ y. P0 r& f- I9 a7 ]5 c
set xmax 30

2 _" |' X5 p) n' l+ F9 J+ j* s' ?
, Z5 P9 J5 M( v: W3 }& @( rset ymax 1.0
/ z- t: p& h& f# Z+ R/ z: l3 T% S6 ]

7 Z. R" x: b2 Z5 Dclear-all-plots

, W/ Q! O5 A( ~/ F; P4 C+ ^0 L0 `$ \' u: @- h4 V
setup-plot1
  _- ^- Y, ]" @2 X- A( A& Y" d$ V. i

& }! {' b/ U4 a+ ^3 ^, J0 Msetup-plot2
- o! W/ a# v' Q- Z- r3 `! @
3 s  I5 d$ t8 Q6 ^1 v% X
setup-plot3

! Q8 E/ |* P0 v1 [  H6 p( Lend. {6 a9 K8 w/ a
  y: l. J- V4 d; X4 |1 q- M7 |
;;run time procedures
: l* ~& O# X$ N4 k7 y
0 h+ z% M0 M2 G1 a3 E# u, Nto go
) G: u' ~- `* ]+ g, ]9 J: m9 a+ O: _  X& h: B% _% R7 {
ask turtles [do-business]
' g5 M: b& u' K3 F
end8 X0 g! A& Q4 `: `5 `

# s6 q  }; X. Q4 ?to do-business
+ |% ?& Q3 `; z& X$ t" u
9 j5 p9 r1 _9 s: _) b
# H% z. ?8 E( Q
rt random 360
% p* ]1 z2 B6 U( B' e+ [, Z
4 W, g3 r' d0 Z3 U
fd 1
( h8 Y; o" K) H. E0 m$ u

9 P: \2 ~2 \3 Z+ mifelse(other turtles-here != nobody)[

# |4 S% W/ B9 n7 f! P- z+ a. u* C) e
set customer one-of other turtles-here

8 M) t0 M$ q& U" g5 \( I( r* V- Y5 F5 ~( l# \
;; set [customer] of customer myself
6 e- V! A. a* ]# @  q

0 q9 p% Q5 [1 M: g5 {5 cset [trade-record-one] of self item (([who] of customer) - 1)% Z2 Q! B7 O1 N" D: }
[trade-record-all]of self/ V* K/ Z; d; `3 V5 P
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
1 m( |/ _- U6 Z$ S3 w$ E# n7 g) Z  ^
; i' W" [' q, w; d3 n" {: d0 T
set [trade-record-one] of customer item (([who] of self) - 1)
! L  t2 J9 @5 G, k6 w* E) K[trade-record-all]of customer
5 E3 m6 D: E( }( ]

( ^' N( x9 j8 rset [trade-record-one-len] of self length [trade-record-one] of self
5 m- M& d% f2 S2 W) Y% n! P
6 t/ f4 {& Q$ `6 M* C
set trade-record-current( list (timer) (random money-upper-limit))

" m7 k# t/ A7 e5 w% e0 O# |/ i) M0 r( d6 |3 ^8 n
ask self [do-trust]5 S' m7 W: k$ r5 v! w
;;
先求ij的信任度7 R/ ?0 ], G" o# h+ J

* r* q* p" y4 [* i  Jif ([trust-ok] of self)& h# k5 S; H: u! S% l
;;
根据ij的信任度来决定是否与j进行交易[
3 I- `4 x( B* d) E$ C; N9 Gask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself( N# {5 C: M/ L! _& _
! M  i& `) k1 w5 U; w
[
8 t- N- y, B* ]% j/ f) ~( c

' O7 l+ p& X7 y* a( N- Z) L* U5 k& Mdo-trade

  D; Q4 z8 F2 A+ ]- K8 Q1 L" w, b, T6 v* d. f1 Y4 x, K
update-credibility-ijl

, ?4 P3 E  ^9 i/ a! g+ |9 \: d& b) G1 j. a5 X) a9 y  g+ t7 H
update-credibility-list. \. m: k6 A3 T

6 O4 J* F! A( {0 m
/ w1 N3 a9 V, j% qupdate-global-reputation-list
& \; ?5 h. P) S- e: F

/ `! K8 j1 W! e0 E$ h* I6 Gpoll-class

0 f3 O8 m/ f# \' `# V8 O+ e" j/ y  y& f* H- l" `/ T5 C% R: K
get-color

1 ^) c; q8 g) J8 M
6 @3 e/ I3 v$ U7 o7 L9 R]]5 G2 P0 D) Z! H& |( }4 L3 U
: P$ V" r; p8 R5 q
;;
如果所得的信任度满足条件,则进行交易: D% k& S) l) T4 }

- v! A; A& j- N( I) p( z[
+ r, T  y) R0 O4 u: i4 w0 G

' U; R2 y5 r* T( m4 c3 qrt random 360

/ R. ]! G/ i$ u1 ?' N* j# c, x/ ?8 b2 p
fd 1

7 I; H* W0 c, P2 e+ z8 ^- l! x) B
0 O% V/ Q6 C* D0 j]
2 [# j6 h; E* c6 N- ~( D* Q# Q

1 h& j) p" W: X5 h% d( rend
9 {; h) L# D. {: B5 R8 g

# u4 }6 b, U# @, H" xto do-trust . @  i5 J& p( i6 V! x
set trust-ok False
# f/ a  r/ Z9 [2 k# z! v9 K4 c7 ]% {$ U
. v7 m, }' g+ H) `( m! ]: |
let max-trade-times 0
" a2 P: N2 a2 D) E" Uforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]$ r4 V; x! U9 a- E7 Y( W8 s1 E
let max-trade-money 0
# g& K3 F! N& l4 @  `' J1 ~foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
- k. R# n0 U- }* |, r4 Y: slet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))8 Z) P5 w$ o7 W0 ^: i7 V- y1 N

9 L' E7 |# K3 l: q- U$ ?4 e5 G

5 Y% V6 x; e4 ?: I0 s7 ^& ^' C' yget-global-proportion
/ U6 I" s$ e# `5 Plet trust-value) w; y+ I$ p" [% @3 d
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)
& ?1 F/ P- S6 O& d! I
if(trust-value > trade-trust-value)
- g% m  |% t: o[set trust-ok true]
; Z( e# t* U! d& U+ oend
0 y! s! x/ n- }' q: F1 u3 R( \
% U3 P& C: x- ^' n0 K* ito get-global-proportion- h! _: N; k' @. o2 u0 A
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
8 s; w: {# A% [$ \$ w[set global-proportion 0]! I1 A* p5 n# i2 c4 ?6 X
[let i 0
( {1 I' n" c4 F$ l% \. nlet sum-money 0" r5 W" t4 X$ a8 _. Q" r
while[ i < people]0 c( f$ z$ z; k, D2 l" W1 h
[+ n& B, `% ?/ }# L% ?1 C" j
if( length (item i
& C9 K0 a$ a) s' d0 P  G0 y4 j[trade-record-all] of customer) > 3 )

& W4 d7 r. E: u( z  ^8 a9 e2 c  J[* r* P8 A, E. \% b6 Q
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
5 @# F( e0 s: i( l4 U]2 B1 O+ h$ X/ T) w, i9 o* s2 Y
]7 @' i8 G1 U7 z1 v! a  z7 K$ v6 Y
let j 0
2 Q( G& x2 B" V0 B8 H8 Y: I+ H3 w* blet note 01 |. @2 N8 C* A; w
while[ j < people]
0 c4 O7 o% N& O# L, f( h4 R[
1 g/ R5 E* e- yif( length (item i8 W, a5 Z- |' i) P# V
[trade-record-all] of customer) > 3 )

+ _1 E  q* M) \! A. `[
  ?9 L7 j4 J1 _5 n7 v+ K& B" Hifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
# F. q, W7 C% v( w2 F: l2 H7 _[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
2 ?* J, V9 I& n" K4 u[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
" ~0 S; L1 k5 ~% m' e]. J& X! o* k1 M1 X2 V) s; T
]& p/ b7 M2 K. P9 T) Q
set global-proportion note
9 P, O! M! S3 C! O/ Q9 P]
+ U/ T9 b2 w# C0 k& }# R# A, |end
1 c0 s4 @. Q. |4 @0 I2 q
, x8 Z. \* @# t; k6 f6 V2 t: o% Oto do-trade
9 A2 F" `) ?3 [2 U1 |  W& x;;
这个过程实际上是给双方作出评价的过程; ?2 C; ?* `4 T
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
/ E. y6 |* v/ u% iset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价+ E: O8 X; C5 a- q
set trade-record-current lput(timer) trade-record-current
, Y4 @. C8 F" D% s" u;;
评价时间
) Y9 f/ `: u7 E& aask myself [
+ i) B! w0 V* ~2 ]3 m& o8 mupdate-local-reputation5 N3 i! A1 M1 _  ~3 h; h
set trade-record-current lput([local-reputation] of myself) trade-record-current; N7 f8 c! U( B; W
]- N- k* m, P) J1 \
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself8 \# k) R$ b% q6 f6 f
;;
将此次交易的记录加入到trade-record-one
7 _2 _0 v! Q7 |1 Wset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
( ], V* L2 o. `' u/ P0 @/ f1 X, O* vlet note (item 2 trade-record-current )
  ^0 C4 X0 }" f/ H4 W$ Pset trade-record-current
) ^5 p  F  X8 z  S& ?(replace-item 2 trade-record-current (item 3 trade-record-current))
. ?+ s% ?, t' `$ M$ z- `
set trade-record-current3 h) y, X8 }; H& |( y: x$ S5 r
(replace-item 3 trade-record-current note)0 A$ u. q$ x, _" ~4 o1 y/ I0 k- o# w8 G9 }
- ~! [6 [* v, U4 r2 v1 o
: |" p  X4 v* @
ask customer [
' Q) p* q9 b- m+ s2 Nupdate-local-reputation
" G; a; s3 z, R% P0 ~7 m. |$ B+ c# Zset trade-record-current+ C: g, Z$ J7 |3 L9 e/ E
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

  z0 P0 V; F4 [' {0 f  N" G0 q2 n]7 w7 V+ ]" N) v' E( ^: v

# L6 Z3 i* w* a4 P6 t4 g% _

* A; k9 S( h& ]set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer# U+ y0 ~& A( G2 v
/ K, B  D+ D3 d# B
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))& S+ E2 j+ l% D9 L
;;
将此次交易的记录加入到customertrade-record-all: r/ N: k. G" q; p  L9 a
end
4 G( ^) d( K3 q% d- F. l
7 k3 w. C% s7 R/ ^to update-local-reputation! d/ B* b0 U+ N+ L& O: ^: O
set [trade-record-one-len] of myself length [trade-record-one] of myself
9 d$ U, f) V9 g7 `9 {9 x
9 B% u, P, n& x4 t9 @3 M# [: }
* w$ K1 _+ B6 i* t4 [4 S" E;;if [trade-record-one-len] of myself > 3
; t0 e8 S/ S" t- O- B3 S
update-neighbor-total4 O3 ^/ m( F1 C6 v6 ]1 U9 h' K! D$ G
;;
更新邻居节点的数目,在此进行7 {+ n5 e% X# N- Q
let i 31 W' t8 p6 _2 j/ ^7 x1 E' [, {
let sum-time 0
7 j5 C, B3 S. l3 Uwhile[i < [trade-record-one-len] of myself]6 W  F, c8 T5 t5 E
[
1 m5 A, H3 a0 b0 G' c! Fset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ); q$ `/ h% c5 ~* \  t7 W
set i
' a8 J, |* q2 h' g+ G# r4 k( i + 1)
4 C& B* i* o' h4 i' B
]/ x! I9 F" P  B' H8 n
let j 3
/ B1 E+ Z4 ?' _4 X2 G" H9 Llet sum-money 0
+ y) y' T  |5 Gwhile[j < [trade-record-one-len] of myself]
% {8 W; w9 K, U; U1 E[
( J  G6 {" V  q6 W8 hset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)/ H6 Z! K. T0 ^3 h1 ~
set j
3 [  F0 I3 a" m7 D* [3 F( j + 1)
$ {9 |& ^7 I% Z" S  A: K3 P7 _% L
], ?: F4 N2 q$ o/ m3 V$ c; J
let k 3: C" c5 O+ y# k) f0 }
let power 0
2 ?  G) @# R) V9 f  z: q8 M) l" Jlet local 0" R. o; h% w% l! s5 y+ {
while [k <[trade-record-one-len] of myself]
5 x- K7 ^% k% O[
9 V, }5 P5 v% x2 f* G% E, Iset 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)
1 p7 U9 N5 G6 v9 L! w( J0 pset k (k + 1)' ^! R) B( E$ D! Q- \( Z* ~
]1 g0 J; v1 j( u; _
set [local-reputation] of myself (local)
$ v( h2 |# J' K( _end
3 ]4 @% _) r2 k8 O5 B% A) B  k1 d* ^5 E: u3 @+ Q
to update-neighbor-total
; E3 T8 j# }$ W$ x) R# I* d
: W8 _8 E! E9 ~if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]3 O7 k  ~! p% A) F5 R

1 L: \4 X9 H1 e  M$ A
; u! U) g% `7 E' y7 B
end
4 p7 u% Q6 c: f' Z% g. d1 l- |* h" K. V3 U: q1 A9 k
to update-credibility-ijl
7 q+ K: C+ r/ m1 d& A& ?  Y! ?+ G* ]7 Q4 z
;;
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。+ f9 F2 t7 j, S# M
let l 08 {; }  k5 W* n
while[ l < people ]$ g% s3 ~; Z, b3 d+ i' \
;;
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  J& Q( h! X/ g% b. J
[
5 q, N" M  P. D, ?! y0 h1 V  F, d3 N" {; Vlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
* r# G- {, W( t0 G% ^9 ?2 Lif (trade-record-one-j-l-len > 3)
# I  \5 m( W) U. `! x7 C6 p[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
) ~& C% J  ^% o* r9 E, A' I5 Mlet i 3
+ d* n) F' m/ C" J7 F6 M; P! Elet sum-time 0; L" Z5 {7 m/ [6 U- G! [0 s
while[i < trade-record-one-len]
; v& W  s, A2 L[
0 g$ \; R- R" `- I' xset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
6 m. w# a' Q8 I' x1 J, M% {: H/ yset i
/ f$ |$ C- r6 C( f4 m( i + 1)
: d' e( T2 w4 R+ Q* D+ s  q( H
]; P% s. p, M2 n+ Q& [4 _; H$ m
let credibility-i-j-l 0( S! j: r$ H/ ~& [
;;i
评价(jjl的评价)
' Q+ c1 ~" ^/ y" ~6 qlet j 3; H; R2 E; T0 J" [0 o* O( z
let k 4
4 m8 A! R  a! {) @6 y3 M& \while[j < trade-record-one-len]
. g6 \, d7 x$ o$ _/ V" c/ \[+ Q& |: I; \% u- g
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6 L9 {& |9 L% M, I- Z7 x: ?
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)
1 C; Q  W* c  ?2 p  Kset j
4 o7 i- `  p: R( j + 1)

6 N& m, K6 d1 r% I, r" X6 O3 t; ?]
* x/ M% R( j  [0 O) ?9 V; ~$ Dset [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 ))
8 U% {: r) d6 {' ]- u) M3 }. J" _" D! ^# M

5 \" k1 d% R' c- _; J& plet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))8 ?! e8 n2 o1 Q( D6 x# i# Y7 R
;;
及时更新il的评价质量的评价
* C' H; l3 h& A- O/ m. jset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]  {0 M+ C% a; h& O0 K) C- Q8 Q
set l (l + 1)
; o4 H0 `6 V5 r+ p]
- o( @2 M6 M$ n7 y6 o& kend: F  i( f" |$ P" l* V) e
: G7 ^5 P( U! O! K- ?! `# u
to update-credibility-list
- y4 }( G: k7 W- V2 Qlet i 0, Z# K* r5 T( N3 X* d3 A
while[i < people]
, ^* U3 e# Z7 Z6 L( B$ i[, ^$ P+ E9 J$ u! @  \- }; [
let j 01 T. U+ @4 F. v
let note 0
1 y8 _% t( |- Q6 f2 m3 Hlet k 0
) M6 @, i! G* ~4 S1 U;;
计作出过评价的邻居节点的数目, k% V+ a3 z" p: Q. \- D' q, O# M
while[j < people]
# b- B7 S4 {$ \( r( ^1 G. E[4 K; U' S. Q2 c% O# Q
if (item j( [credibility] of turtle (i + 1)) != -1)
) A5 I" ?9 t+ m! q, A0 k4 _) G4 T;;
判断是否给本turtle的评价质量做出过评价的节点- C/ ?2 b) t2 i( q. [$ o' I
[set note (note + item j ([credibility]of turtle (i + 1)))
2 f- v7 w6 @8 [5 J;;*(exp (-(people - 2)))/(people - 2))]
* N% t8 }2 D$ P
set k (k + 1)
! `. h1 _( o$ U' E( ]5 d]( c, D  c" r4 e( _5 r0 r; @# w$ _
set j (j + 1); Z- ]3 R6 L8 |: K9 Y: g3 N
]. [1 b0 N  A5 @8 Y  W
set note (note *(exp (- (1 / k)))/ k)0 G; R! D% H7 x8 v1 `% M
set credibility-list (replace-item i credibility-list note)* Z' Z; Y% M6 r  z
set i (i + 1)
0 w# U! ^! g* j]8 {: @; _6 h& T% i- ]  q
end
4 F& E2 f: h0 y: t
- ^% O2 A+ F! vto update-global-reputation-list
: g1 g* c6 f, v0 j7 z0 Z6 {1 Plet j 08 T+ q: V6 L4 _3 X0 ~* z
while[j < people]3 g; Z, s" G' I
[2 ]) q; ?, Y. `7 a1 m
let new 0  J9 p/ e/ G8 i6 {3 w% ?
;;
暂存新的一个全局声誉
$ c/ A8 }& R+ N% E8 Plet i 05 y) `6 t; D& ~* ]. A
let sum-money 0
8 z) i9 X; X' E  g& |let credibility-money 02 n7 H0 L* k1 l- M0 X& s
while [i < people]6 i& y, r, k/ Q( }3 e
[3 a4 h% M& s5 s% h6 ~9 o" d7 ~
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
  C8 P: m: N; ?1 I# Rset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
' f, ^" b( R* ~/ l) Hset i (i + 1)/ p' D2 C+ x% J
]
) {  F: u0 }4 g8 G4 @& q8 u4 Z: @' Ylet k 0/ y, L, x' W6 U5 e& Z
let new1 06 S. H; o& w  m* x9 b' q* o% X$ d7 _
while [k < people]
! z* A/ f" x7 {9 `4 g[1 h3 I% z3 N5 J: Z0 J
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)
% R* z% E6 \' I0 O, r! L/ A1 Bset k (k + 1)* J  k9 {4 @" @) p4 N
]+ b0 l$ _4 `9 o3 m
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
! y4 a6 S. v# l9 ^set global-reputation-list (replace-item j global-reputation-list new)
% @, Y' l+ I' G6 I' k# }& ~set j (j + 1)
  H. C9 h* |9 @" w1 v8 J$ g]/ I; M( Z7 C  R3 ~: \) S4 g
end
, Y* _, X" ?1 h( k5 g9 I. g1 G
4 d/ Q  \$ S- L
: f7 |3 I$ L* u6 R
, l3 t$ U: M- I( Yto get-color) l# U. s! r7 q  i# T0 R
6 i" x9 n# t) V2 Y% e
set color blue
1 c( O: s) I, e! d: r0 Z
end$ N1 B0 a- |* P) n' H
$ q* u9 x8 `; g) d
to poll-class
4 V  [3 w5 a+ w  I' cend
  ]0 v4 u, z- P' ^+ B
+ U! K  r0 C  m1 x! Y$ @$ ?to setup-plot15 _6 z8 t3 |& @+ ]6 q7 w/ A2 H. f& }

3 ~+ W8 U/ }" _% gset-current-plot "Trends-of-Local-reputation"
) C! Y) T1 j1 F: T" _6 h

8 ~. A1 N" V: |, fset-plot-x-range 0 xmax

$ b4 L1 O3 F5 m0 o9 V- }# ~5 S$ R
set-plot-y-range 0.0 ymax
$ M( s# e! W: n' y6 l  w; r, \
end# A' Y: p5 v# d

+ O/ X0 B' P+ Y1 _3 uto setup-plot2
# V- O- Y* a; A- i7 a( M+ t  ^
0 w; g4 i0 T$ O0 ]* @1 o7 sset-current-plot "Trends-of-global-reputation"

- d4 c2 b, c2 _- W. F( S
9 O9 o. Z6 Z& _% b2 V8 [# kset-plot-x-range 0 xmax

- C# M  v) ~. F# p  u/ \
$ R6 s& Z( f3 l9 u4 ]+ Sset-plot-y-range 0.0 ymax
7 r) V# J+ W9 t5 M9 M# L! s) b% B9 S1 h
end6 `+ t; s- k9 t) s

% r0 F" l3 V! ^  x; O% d% V& J, @to setup-plot3
. [0 @6 F$ I" f+ H; P7 [- p6 r
- ]! D. r& h1 q6 |set-current-plot "Trends-of-credibility"

2 j4 S; E- C! M* p) t8 P
3 g: o: z( m# W8 O( m1 hset-plot-x-range 0 xmax

( P. c" r& C( D/ S1 E& i: ~. a$ Z4 b/ C, i1 r
set-plot-y-range 0.0 ymax
( @4 A2 ?1 P5 l" m9 k4 l5 ]
end5 ?7 c" W8 `0 R' _* y2 v& d

; {0 |' c! l) @to do-plots
, K2 M; B1 \5 Z  l0 D, L1 w' Aset-current-plot "Trends-of-Local-reputation"' P, W/ p- A, Z5 j$ i  [9 \8 I
set-current-plot-pen "Honest service"# Q: ^& {$ y! b; F1 ]7 L3 l
end1 t! a# r+ ]+ F& F' D
' J" Z# R4 V7 x' [9 P. w
[ 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.
% P7 H7 N- a# U6 I( ^- i; z7 j6 F6 T  ?$ R  M3 _; b
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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