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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:
" @; y' }; m8 Cto do-business " I/ O" P3 j+ u9 v' H+ w
rt random 360
/ T. k$ A8 Y9 p8 Y4 L0 M" B, O fd 1, @5 [. [1 P" F' f
ifelse(other turtles-here != nobody)[
+ b  S: x3 e6 R/ X4 r   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.: `1 x& ?; b9 {6 v6 w
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ( L# _& I4 t: t/ t+ y# ?7 ^. e- B: N% s
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
) ^1 p2 `3 ^- ~' G8 w4 V/ [& W   set [trade-record-one-len] of self length [trade-record-one] of self5 a% o* f  w% M  {
   set trade-record-current( list (timer) (random money-upper-limit))$ k+ O+ }7 {$ P: Q. _1 B

& h8 n. C0 F6 k3 q2 w! E0 _1 w. H问题的提示如下:1 a0 @- {3 `9 Z$ I, b0 [* `
. w( e7 M5 ^% ]: w
error while turtle 50 running OF in procedure DO-BUSINESS
2 q6 X. ^5 s, p3 o% @- I8 {  called by procedure GO
1 G! [3 k1 |7 x$ G# XOF expected input to be a turtle agentset or turtle but got NOBODY instead.% `1 M; v4 B; C) \' E2 v, Q. G
(halted running of go)
1 p* o3 i/ i/ t& \. |3 J% f5 b) _
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~~, q& R  I( o! l; K+ ^% \; t$ e
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3 \) w# F1 m- g. N8 Q
globals[/ ?+ s& A# M( d( n4 ]
xmax
* [' O8 p0 o5 ^4 {- W# c4 {5 `ymax6 l7 ]; ]- Q  Q" d( v$ u( u8 R
global-reputation-list9 z$ D! e' M9 ]* N/ p

8 |8 q* y5 V. c7 X# ?% Z  v: N;;
每一个turtle的全局声誉都存在此LIST
- ]3 Q3 Y  @2 Lcredibility-list
: [: s1 {5 Q4 ?0 P;;
每一个turtle的评价可信度- T" B) t+ ?# E) u" _* ^" S
honest-service7 z% S% m. O$ f" O5 m
unhonest-service& n) B: a$ q  b) f! v. K
oscillation
8 l5 |7 T/ y4 l! E* u) S5 l& Drand-dynamic. W$ T) Y) e2 T! Y5 I) Z6 h; _8 X
]+ Y; ]$ E9 L' S0 A  |9 c
' f) H9 M( o& y2 }& z. d
turtles-own[2 R6 }8 B3 R5 ]5 x! x
trade-record-all
- |1 F+ T# ~$ Q) p;;a list of lists,
trade-record-one组成
6 _4 A5 m1 o" m( r; T$ Ctrade-record-one
, K2 f- I; ^7 Q$ e* q;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录- P9 b% F* r- {, P

0 w9 b6 y: B. P7 x# 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]]4 G  F4 n$ b5 Q/ x" K; ~: U. d, Y) x
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]
1 a  s9 z8 }0 r9 A+ n% U# y8 [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* O) V: |. m9 r4 _: T
neighbor-total) }0 V3 R( ?) e6 f: W% ^
;;
记录该turtle的邻居节点的数目" z. s2 i5 P) v$ e) x: r
trade-time; H0 J7 w4 F/ o$ A# o' p2 W
;;
当前发生交易的turtle的交易时间
5 z8 C! c: f& j+ u' ^1 q# ^* k! Qappraise-give
( _* S( r3 X, W9 T+ A5 K;;
当前发生交易时给出的评价
4 h9 {* E4 e7 \/ zappraise-receive+ W" l( r; a3 R3 _% c
;;
当前发生交易时收到的评价
- n0 m6 O4 d' _  C% l( M  g3 |appraise-time$ b- S% a; V/ r
;;
当前发生交易时的评价时间- p6 }5 d7 m- a  K0 S) v4 m9 r% E) }
local-reputation-now;;此次交易后相对于对方turtle的局部声誉( V4 i: Q# L! h4 z# K1 Z( G7 a
trade-times-total
; b5 h' k& X' `; j+ T6 r;;
与当前turtle的交易总次数
" I) a7 E8 Z* @7 jtrade-money-total
8 c4 M* K3 }  P' C. L7 ?7 M' _6 h;;
与当前turtle的交易总金额1 M. o. w6 L  w1 k
local-reputation
" n' S3 B1 O6 ]* x' X2 }global-reputation
; }$ r* k; r8 \/ M% ucredibility
3 u  K' l/ _/ w' b0 r7 ]5 T;;
评价可信度,每次交易后都需要更新
9 V0 F% x) M, F: D6 V/ H& ]credibility-all
3 S$ G2 H8 u# g2 f% ^;;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( o) @# a8 u! e3 O/ B$ b7 a

$ N0 y1 J2 o3 q;;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
& ^+ l! b/ z( j+ C5 ncredibility-one3 }% x& p* P# @8 |
;;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
8 v  q( L  j5 {global-proportion) g4 S! w/ ~0 Q) u% ]( A: d/ U
customer  s0 t* o( y9 h* O# U; q( S# Y
customer-no
3 l. a" ]# w, Q1 W$ j& Strust-ok# r4 x% E' i. _
trade-record-one-len;;trade-record-one的长度2 E/ M+ I7 ~6 P1 u, `7 @
]
5 `/ w! P* j, @2 l; V) ]) e' |* O
$ K! }6 Z& H, K* D" Z;;setup procedure
3 I; r" b5 l. P  n/ X8 U9 F$ t1 M! i5 D3 U
to setup
1 q7 `' ]. B6 d, g' M$ F8 h$ H/ a
6 |( v( G- a! v9 r% S0 A) U) Tca
1 O- O# p- l% E  m
1 V, W3 Y! z1 o9 Y" ~: t8 q
initialize-settings
% x: `$ B$ x0 u9 ~: _, g3 B3 u% p6 ?
, E5 V0 U, q( S, ~/ ]0 ^! ]
crt people [setup-turtles]
$ K1 u1 l# v6 S# O; ]
% {  A4 M1 ^' B8 T7 Y
reset-timer
, J6 o1 O8 V6 l1 a- }9 z5 L
+ O: g7 j+ C# ]3 w$ h% N  C: T! j/ B: C; q
poll-class
6 C# H% j% x9 t; p4 X# y

* b: S6 C2 e7 [) Nsetup-plots
, J' r6 H, g3 J. h9 e
1 b& d4 ?2 o( m3 \/ k. G" s5 B2 n
do-plots

9 ?! }2 ~; x8 k7 w* T' iend) Y' H" ?* u$ B, b& W" U' K
9 v% g  t$ k, J4 N+ a, |
to initialize-settings$ C! m) V0 g7 S& @& g
8 r3 s3 Q" k5 e4 u6 ~/ g- D
set global-reputation-list []

5 C; \/ X" x8 E4 Q% K
/ u9 m, l7 H5 O9 \' [" wset credibility-list n-values people [0.5]
: g, j' C# }7 R! p4 q8 _7 s
- R9 P3 H$ v. y/ b7 l8 C
set honest-service 0
- h8 T, O$ w  f0 s( p0 z+ ~
$ Z- W( P; N5 R1 G; K
set unhonest-service 0

/ \+ O4 H* m) U* f" [, @
; Y. _3 S% u( yset oscillation 0
9 W4 V$ h' z, v" t" m

  v& J- d  H1 @0 Lset rand-dynamic 0

3 f% x7 m4 G  @9 aend6 a1 c5 P6 a. z

# L0 |& T2 V9 x4 V1 U$ j- t& Gto setup-turtles
' ^; p" \9 k) r) lset shape "person", s! U  `5 z- Q* x/ V- z* U
setxy random-xcor random-ycor9 z$ o  H3 R' q% ]! }1 D
set trade-record-one []
" h# O4 A8 w$ n- e

! b/ p  P+ N. l# H- {8 k% lset trade-record-all n-values people [(list (? + 1) 0 0)]
6 f2 l# `3 M1 w

& s$ \# h6 x" E( `  r! m, o  ]set trade-record-current []
0 L0 l3 e) q6 t/ `! K+ Yset credibility-receive []7 h( J4 N2 `* t
set local-reputation 0.56 v  G! y8 l8 v  X8 I8 @9 o# u" n
set neighbor-total 0
# \. `/ L6 o$ f) A( Rset trade-times-total 0/ V; [6 M! ?+ [0 H" |
set trade-money-total 0# N9 z. P" T, I1 }- F% @" u0 e1 @
set customer nobody
' J$ D- q2 T% j# h! Jset credibility-all n-values people [creat-credibility]
# n# v0 I- ~% B. Tset credibility n-values people [-1]3 l; r+ C) r1 M8 p$ @+ G+ b8 W6 f
get-color
3 H: {7 K) t1 H3 n

; v  B1 W& C: ~" O8 O2 Zend
$ T" j( r  k, Z9 P0 c" F, s1 x' x
to-report creat-credibility9 j' t4 D; _# s& m" e- ?
report n-values people [0.5], G& Q0 z* C( ]9 c, [
end% H/ L6 }! m4 j7 l7 J, p; P7 E1 o

/ P  L. P! ?0 o- h* C. ~  W2 y: Hto setup-plots
. L$ Z- g0 D5 U8 l3 T/ X/ q) q' D0 Z/ a4 U( |7 m! Y# C' q3 P% H+ N8 h
set xmax 30
4 ?5 ]- b) o# ~% o1 n
  z6 A( c8 ~  a4 R
set ymax 1.0
; b6 e  `+ s' h1 b# ]+ I& L& a" y
7 E  w4 \6 \5 r& a0 D- _4 ?
clear-all-plots

: N$ f5 @0 A4 U# T1 X
( ?4 I9 B% M  e. Qsetup-plot1

8 @  E9 U: n( R1 S/ g; k0 p, K$ `& o! {+ k( Q# L! A4 H9 h' p
setup-plot2
  m- M( k' ]9 V

( f8 m. ~/ u3 P& h# {+ ?setup-plot3

9 W# k& Y! A& J. hend
9 l/ |4 c  B' q$ X- _9 z4 \. A1 P: L; @! F
;;run time procedures5 p3 v* h; H/ J/ x2 ?/ P
2 `; ?) ~% c2 ~7 {6 y3 x! J( `
to go7 T( d5 [0 Q8 M1 O+ C% \

% u+ j6 A/ }6 ^+ J) @ask turtles [do-business]

! X, _9 H/ Y  c2 J9 N, vend3 W8 w3 v4 T0 G) o  }6 J, r: n
' D& @( J; }$ @; j0 I
to do-business 4 Z' R& q& }  d/ e: e7 R5 H
" Q0 J$ x6 ]4 b# V" f+ p

+ J" R( r  t9 q0 _* C- M, C! frt random 360
" d+ C7 [% J" I" @% [
, V: |# o& E3 x3 F& N% q" V8 H
fd 1

- I6 l7 E+ j& ?
, z( ^0 P8 l: p) e( iifelse(other turtles-here != nobody)[
: A6 T# u3 e% D- m" \. X

6 J  a9 R, t3 c7 F0 D+ M% mset customer one-of other turtles-here

5 Y$ y9 S+ j/ z. z2 v
0 l4 S9 z9 S4 b;; set [customer] of customer myself
2 V- R% h) E( X6 E
! b# r9 S" ~0 [) D6 `
set [trade-record-one] of self item (([who] of customer) - 1)
7 ?* a0 W2 M5 y6 y3 e4 e+ m[trade-record-all]of self
; p4 P( @* I% y: O;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
6 b7 g; x0 q9 w, i9 U0 a
1 x+ A8 m: e+ b7 R0 k2 N* u
set [trade-record-one] of customer item (([who] of self) - 1)
5 v+ X* P. W0 C% p[trade-record-all]of customer
9 m4 E3 w* _* T! Y! A

8 }5 G0 M8 v" [3 Q+ gset [trade-record-one-len] of self length [trade-record-one] of self
; r, B0 V) B1 s. h0 u/ r" F

$ v4 ?( ?1 R0 `/ V) B# k8 I# Iset trade-record-current( list (timer) (random money-upper-limit))

0 @2 J6 d* Y% o. e3 G/ T. i- g
- u& A5 G- I' F) A( E# c2 uask self [do-trust]
# a8 G( j$ S9 S3 z7 G& c;;
先求ij的信任度
3 n# I" ?: F/ p+ T  M# W8 C* R
$ r* L8 B0 n7 ^3 S( tif ([trust-ok] of self)
1 Z# b0 z/ k$ \: V;;
根据ij的信任度来决定是否与j进行交易[' L( c- W% ~* j$ G+ m4 l, ]
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself3 O6 k: |7 o; J) B  Z
+ F  _$ c$ W+ m
[

4 S% Y4 Y$ r6 O# i* ~& e% Y
/ T6 k1 ?8 J! I  E+ `8 y% ]" ydo-trade

3 x( t' m& W6 u
- U) S4 q7 z" P0 Oupdate-credibility-ijl

, O, j$ \0 a+ n, R) T" c3 Z4 E( {, S2 g! G' F
update-credibility-list. @  i- v9 `9 p5 U! i2 n

- x0 `$ S- r4 v. ]' J) e2 [/ N2 H0 ?/ }* }& E1 ~: |7 n
update-global-reputation-list

! w: B) n. a4 G* A+ N3 L: F2 [- T1 m' [# Z
poll-class

8 w6 Z# m3 [, c4 P" H) k1 y3 Q% e. i" `% C( F6 }
get-color
( d1 ~) b) X. }/ F- \8 Z9 `
) o9 G  I/ L: Z/ G/ b: r% m
]]* c) z1 W: m4 Y1 }$ S
0 D# d7 n. ?  F* {
;;
如果所得的信任度满足条件,则进行交易, T4 `3 C" d3 _; Q% c1 |" `+ t. v1 n6 B
6 z" g1 {$ C. L6 y7 M
[

+ W/ J- C- t- r  N3 }) Q- w. x( g: o7 ]* Q! t7 u" k
rt random 360
: z" U* R  c8 N' [, P' E+ n

; I! g! r+ E( R& R7 Dfd 1

5 G" k% F2 w5 B; [. D+ ^. {$ x1 h
]

; ]4 V: R9 d- v) S" C: w. G: _# e5 K; R& P- {% F$ r1 N4 d
end
& B7 {& s$ c3 K7 W0 ~1 x, j
' b. L* P  r  q, ]3 L
to do-trust
5 s) J: s- S2 x2 V0 qset trust-ok False  o0 P' y* v3 N% L% a7 N+ d; W
! v0 l$ a( U6 k0 L+ J

9 w! M  }& S3 d+ r7 b" ~2 dlet max-trade-times 0' [8 M2 a' o# A0 ?$ k
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]: k5 |7 _; t( j2 J. d4 z: R
let max-trade-money 09 [) H4 @% T5 l9 l
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
9 A: R' K' C  e. G* jlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
' C, U% Y- l, i1 i; I. x: _; z
8 L  {9 t# \9 Q4 U2 U
: b4 F" P1 u3 P# `
get-global-proportion7 `' s, c  h9 B% p* u7 D
let trust-value' U# _; m$ [+ Q+ F% I' y' R: O
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)

- W. L5 |- `2 ]3 nif(trust-value > trade-trust-value)3 R8 v4 ?# A" X0 X* U
[set trust-ok true]
) w4 k  J0 v: o3 l, B: z0 Kend( U1 \! l! u! Y9 @4 V

% s, n8 S) V, k, {" n4 Mto get-global-proportion( v6 O* |: q" H' I0 M: k
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)% Q( t. T1 C" ?5 D% r! f# N/ a9 `
[set global-proportion 0]
' g* ^$ G! U5 S( q1 j+ W2 u[let i 0
% K" @) Z& ]3 j# R4 g2 wlet sum-money 0
( ?9 M! H8 o% {while[ i < people]
4 _. O2 c' b6 v% {3 e# ~[
/ y2 H0 H+ B" F& y# jif( length (item i
1 U8 i- @# I: w& p[trade-record-all] of customer) > 3 )
$ v2 ~: o! P  [
[
4 N+ y0 p  n, `  c: U: i. Lset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
! T* G% n9 m- ?8 H" s  F- B]
5 n5 }6 j" ^* G: t]5 w' n' d8 h1 |) Q' {* L
let j 01 ^7 Q# F; O# J$ ]
let note 0
( M* i, E7 M/ L  H# j# M# Gwhile[ j < people]
# x7 v) Z' H3 S1 v$ w6 S- t[4 k" ^$ P( v2 E) w
if( length (item i% [, Z% L2 i: u0 D3 r5 g6 p
[trade-record-all] of customer) > 3 )
4 x2 r9 f/ d+ T
[( B) r7 U) x$ d8 z
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
7 c8 T/ i4 p, r5 B- D[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]* P: x& U2 G1 i- D, f
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]& @: n3 Q" ~9 J- s# X- v1 p6 t
]
% v) x6 A4 {1 _: m; \2 O- t], Z$ ?9 C" J6 c' r; S6 s
set global-proportion note( e6 Z0 ^2 @& i* F
]3 T8 ]0 U7 e) I5 }2 j4 j- o$ g
end/ ?7 ]. {, B6 W. g5 z

2 S4 k- l# D4 }* [- Y9 J+ o7 Oto do-trade6 o1 T, S" M' o/ x, T' r
;;
这个过程实际上是给双方作出评价的过程' }( d  Q  v$ o- t- C$ C* ~% o
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
' n7 W3 q9 G( a7 p. o. p! I: x% zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
5 J$ c' b2 b6 D! y# R5 J" [1 i3 y. wset trade-record-current lput(timer) trade-record-current$ g: j  r! z5 I; y' t& i8 Q  D
;;
评价时间
, q- i3 L) L' `6 O# H( p  sask myself [
1 O  s; o0 X  N' Z9 M$ @* ]: oupdate-local-reputation9 h  c) i1 f: a7 G3 A. x' L* X0 E
set trade-record-current lput([local-reputation] of myself) trade-record-current
4 q0 U7 s7 `7 q; X]* v7 I8 d. e/ A  L
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
8 _/ Z9 z. \' _8 H;;
将此次交易的记录加入到trade-record-one
+ `% W7 O4 R* x! o' X" _$ @set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)  w7 {$ u9 a* |# b, ^
let note (item 2 trade-record-current )9 I* |; @4 Z1 u5 o- s/ b
set trade-record-current  N# k; D1 u6 D  @# k
(replace-item 2 trade-record-current (item 3 trade-record-current))
" O" R1 E4 p4 F2 O& U
set trade-record-current
& a# H# w3 k# i; v" ]! D' |(replace-item 3 trade-record-current note)
' W6 S6 y1 {- j- i# c. V% G
/ W! W! b1 w. P1 F0 @% W4 o& I8 L

. {$ T. _3 \9 wask customer [
8 O$ M# [# }% `update-local-reputation1 {9 @- J, k2 `4 x* ~: L
set trade-record-current
% A- O9 H. Q5 t% g: C# g(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
; R5 R7 A4 t9 E% x- d8 W. W, v
]
) ^) b6 E: ]& ~! W  f5 m1 U8 t3 c8 \5 d+ c- P
& z" |7 z# q  U# c
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer% u. }5 P* A+ f% o& M0 I& q  Y, F

6 s% x. N; x5 n( B$ Y3 Jset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))5 ~7 \! Z# N% N  b/ L5 k
;;
将此次交易的记录加入到customertrade-record-all
& P5 N3 A$ L0 l: s# U- h4 K) Xend! u( L( G8 G5 Y1 E
) {  k$ C2 X% k5 x- o8 K
to update-local-reputation; B/ M+ `4 A4 w3 G
set [trade-record-one-len] of myself length [trade-record-one] of myself
0 D: @8 d& C) P1 [3 X) x
8 L+ b- J; L; d
+ }5 o9 U2 _$ C7 \;;if [trade-record-one-len] of myself > 3
5 w8 x! u& V: M) ]) M
update-neighbor-total
- U% h5 }5 |& T# L4 F2 f;;
更新邻居节点的数目,在此进行3 z; R+ J2 m! |% d4 I
let i 35 K! X2 \, L% w' D# k; }- M, H
let sum-time 0
4 m* i8 o7 w$ C2 Jwhile[i < [trade-record-one-len] of myself]3 F0 j* m( Z' u; x" p! s$ E
[
0 U; i+ M# N! Y0 N' z, {# B( J6 ?set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )6 e4 L& i; k. C+ S! k1 {  l
set i. e/ t8 r  k$ t6 o$ A
( i + 1)
+ M' [) ]  c/ m$ v5 u/ z
]
. p3 c- @8 a% O' v) t6 N" Elet j 3
& v/ [/ R+ j: Y8 G) ?  ?! [let sum-money 0
9 `- B0 A) e% L! J3 owhile[j < [trade-record-one-len] of myself]
5 s, y! ?4 y! r- D[' g' A* |7 P6 }& l9 z
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)) X1 c$ Z* @8 l( a+ R2 n
set j
1 X$ F) K3 d' `  q& P0 K( j + 1)
9 ]. Z% C. a9 n1 `! m0 @
]
/ d. x# x  }$ \, i3 O. Q2 klet k 3
8 E5 H! W0 _" @5 T& hlet power 0/ N9 a0 T8 o" O/ b7 l7 a. H
let local 0
! @/ I* j0 A5 }" V7 X, p- ^9 U5 Bwhile [k <[trade-record-one-len] of myself]2 r6 e: W% i! B4 f* P. H
[9 ?1 D- ^2 D9 ~* F. E
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) ' P5 }' A8 v2 U" I4 y; G8 e
set k (k + 1)
" c4 J9 U1 H* ^* X7 r' I]+ u, U- `* W7 Q# W& g9 v% M) Y
set [local-reputation] of myself (local)
: R5 \% c# v9 x7 p* Xend
# x# d' o; \* h1 p8 ^" e% n+ K# B, j3 X& U# w* w) H4 \% W
to update-neighbor-total2 z) X) K5 n" L) F' z
; P5 u: }$ S! [+ D
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]7 ~" X  [5 x' K. {' N1 f4 J
$ C# A2 H4 H+ f8 X+ |. K2 K9 g
2 H/ x# [2 `' j9 p
end/ o7 K- {8 i( h* i1 z4 i0 N
% e4 H- w  |9 R
to update-credibility-ijl 4 m; e* w7 ]. r6 f/ X' m

! P' u5 i0 x) m. J3 M4 a% q# u;;
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。
6 h, H. a5 |6 e. plet l 0
' s7 C) V. Q3 i2 v  I& twhile[ l < people ]
& d! I) u( Z+ V1 R* m;;
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
+ ?: Z! R! h7 R8 O" ?/ C4 h[
9 d8 Y' t$ W" A# h' D. a4 ylet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
! H5 t/ L9 q9 F. k! @if (trade-record-one-j-l-len > 3)
/ c+ X* E8 `4 J( u) 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# o9 w+ ?: d$ _0 F
let i 3# @4 D! @5 b4 ^' [# F# \" {
let sum-time 0% b/ P0 P8 M# `7 F3 L* a
while[i < trade-record-one-len]6 Y( c! q$ o' H2 l
[; H+ h# B0 t* U+ T7 g
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )) j; i2 q7 b1 Q; j/ q
set i
5 F; b" Z+ z; J. K1 a( i + 1)

. ?7 v$ b! z. V* o  j' j]. W: P  p# d# e3 j! B
let credibility-i-j-l 0# {" J. w* E  a3 u+ E
;;i
评价(jjl的评价)
; w% D& p" u5 \let j 3
$ b5 u+ Q: s( q7 v  X9 v" F  Tlet k 45 j0 N0 h0 o, k
while[j < trade-record-one-len]
- d2 l8 o0 n7 ~% u- V[
: H' @& a% h+ \% z! vwhile [((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2 ^, z( h! i' M1 B6 ~/ b/ J8 w$ \4 g
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)) i+ h* f3 f, p, @& U
set j# {) Y( K8 }" |3 D
( j + 1)

/ W5 B. y* v' I; q1 c2 d]/ n7 `2 A; W9 K" p. I
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 ))
3 h* }3 C7 B+ A/ M1 _, N& s! |/ J1 q' a( `: [
6 A% k' s9 U: G# ]! D
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
9 W' ?& `) I% s) ^% v  T( l: `;;
及时更新il的评价质量的评价) K) c; I. T# f  A
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]& E/ r& p1 ]/ P6 F) u- s
set l (l + 1); t3 }6 q# {7 g
]
# H5 r0 f+ v0 U9 [4 [! send
; e  W# R1 U# ^6 {/ h% c% u& V3 m" d9 Q- ^2 b- m8 [0 w2 A
to update-credibility-list
. @" d, H! ]9 B3 g1 b+ ^7 x- vlet i 0
" v  w) n& k8 G: I( Uwhile[i < people]
' q) s. H5 q" ?! a  t5 s[9 B  C- ?8 |2 z, P1 I
let j 0- N: [9 U. Y, I. d' K1 Z
let note 0$ O! F4 c: Y) t9 b& w; [
let k 0
/ I: `5 ^; P' s$ B+ w  y" f6 y: Y;;
计作出过评价的邻居节点的数目( O! V9 [3 w; U( |! m% I9 z
while[j < people]
7 Q( `2 K% q- A! C# O[
5 E3 f1 I9 G1 I0 E  yif (item j( [credibility] of turtle (i + 1)) != -1)6 R( u, f% m, e' b: a, ?9 g
;;
判断是否给本turtle的评价质量做出过评价的节点
4 v" A, P1 @, ]; k# q[set note (note + item j ([credibility]of turtle (i + 1)))- e8 M2 _% _: J% Y2 z  H
;;*(exp (-(people - 2)))/(people - 2))]
/ P6 J0 l5 T5 M) T& f& K
set k (k + 1)3 q& ]* h7 f8 Z! Y
]* {* ]9 @/ V! M" l
set j (j + 1)
/ |0 g1 g5 f; O' \4 B]
! z1 B. Y' ?/ ?$ e+ Wset note (note *(exp (- (1 / k)))/ k)
, ^3 `' r( T) T/ [7 pset credibility-list (replace-item i credibility-list note)1 O" O: Z! x, B
set i (i + 1)5 C  X, L4 M# C4 ^# ?
]  W5 {9 V; N5 l9 K% v' o. a+ J4 y
end4 f  Z1 H* _5 o+ {. j; O6 @8 `$ d/ h

% T* e" [" k5 r4 Dto update-global-reputation-list
( h, k. Y: t# }9 A1 p: B8 Mlet j 0, e, S) V2 o$ S/ _) [. w8 f
while[j < people]
7 R; E/ J6 \/ E[
: o9 I- D9 p: F7 ~6 U! C$ P1 x/ alet new 0' g" W; D, C  l$ H5 o
;;
暂存新的一个全局声誉5 a/ D/ B/ T  o! v& y6 F* ?
let i 0; @2 M' [3 B' h$ p) s* m8 H
let sum-money 0
. r  G& L  f& W" L: C. xlet credibility-money 0
0 m0 \" x& z* C+ f; C. r! ywhile [i < people]( X4 t; a# X, L9 F
[
* q; K( c) e9 \+ _$ T$ ]set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))  N2 |. U( V# z, f4 X* c' \
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))! w* p4 c5 b- {1 G+ v1 p
set i (i + 1)% Z1 _, P. p$ K' I
]
6 s: ]( {$ J; }* R) Blet k 09 {2 Y2 D  a/ U5 A) d8 T5 U/ m' P) A
let new1 0
7 U( h( j( y. N8 Cwhile [k < people]3 b+ v" l; ?3 z
[* t2 ~3 m9 L( T+ X( h, q) y
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)( e/ u5 s0 T- y
set k (k + 1)3 n7 G7 q7 C, e$ P
]
# P6 U3 U5 ~* r1 `# K4 vset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) / A: ^- G9 }2 t1 Q! |! D6 n
set global-reputation-list (replace-item j global-reputation-list new)5 ~6 h3 _, i) S7 g; b
set j (j + 1)0 x) @- l4 @  a0 P8 \9 O
]
+ W+ o+ {# m8 uend9 }- v" {, v; D* u( ]0 H# g2 V: T

' q: C- y2 I! I% H" ?% _
) h5 x% M- x: e  b  W" d9 C' J7 b/ d
to get-color% U) n; }" r! q1 T4 g* i  b

' M( f( Z( v6 J/ b& V6 Lset color blue

2 h0 ~* b5 m/ t4 O) _9 Dend9 z/ ^' M1 V" z; C" ~$ H8 m! z* w/ Y
6 S' s/ G% x4 S1 ?4 ~
to poll-class' H  j5 _$ i3 O8 m# ^+ m
end# w% {$ `6 P0 X, n  `4 r

4 X. G3 l) T, W( b8 V: [to setup-plot18 Y& f1 O& b' W1 A8 B$ r4 x
7 h; Y/ k, F# k1 X/ Q9 K9 T
set-current-plot "Trends-of-Local-reputation"
6 u2 T5 A% d% M
/ {, ?( S; Q. C! L
set-plot-x-range 0 xmax

; `1 C- k7 G# k/ Q  e3 b  k) M
; S2 k; [& @1 M/ R4 iset-plot-y-range 0.0 ymax

  ^0 P- _2 Q, H9 Cend
& u% `: q; I9 l5 W3 F0 x  i/ z  c7 q3 K5 G
to setup-plot2! n5 [5 o9 ?9 L3 p
4 i; O, t. X; D$ T! D
set-current-plot "Trends-of-global-reputation"

2 N, [- U+ L, y9 ?
! c; K/ K  p" i8 M6 Lset-plot-x-range 0 xmax

1 {7 v: [7 r* ^0 n
6 M4 h3 G& z& a! h! Qset-plot-y-range 0.0 ymax
! E5 r. O) ?! ]8 p, B6 Y$ q  b
end; }6 S3 L1 K2 a0 Z
# o0 E6 A9 I5 a: ]  M
to setup-plot3( Q3 b$ i' Q+ x( s3 }
7 o. x5 L% L! z' C0 @! \. M
set-current-plot "Trends-of-credibility"

$ Y6 c* }4 N! P+ p" t2 e$ b5 W3 b  h, b# c, k) e4 X
set-plot-x-range 0 xmax
4 x% N, x) T# n3 F7 S" k
' `) R: P6 s) q( x7 s
set-plot-y-range 0.0 ymax
; n" Z" f, h" m: f
end# M: o2 Z( F' t! _

9 J( b; ^; A( }2 d$ `5 [to do-plots
- F  Y& V) g8 Z; u  K1 o7 Sset-current-plot "Trends-of-Local-reputation"
% e) g/ o2 S3 m4 G# x2 m4 H6 D4 R" Jset-current-plot-pen "Honest service", B9 a- O7 D: C% M* z
end  A6 a: C* ~7 C3 m- c$ v; y0 u

2 l9 i) n5 @7 J/ `( c$ 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.
/ q& |6 \+ C2 [2 ~' X' P3 B; c" e; O! W% ^; ~+ n3 h
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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