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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:) O- R# S2 q% S! O0 u7 B: F
to do-business
5 r# r' `: q: G  |+ o* V. R rt random 3605 L4 b# ?' U! u4 v
fd 1, h5 ~1 p! q1 y# l; j  i3 \
ifelse(other turtles-here != nobody)[
6 D9 r6 J3 |1 H) {' C   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 u" e% g3 H* \
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
6 Q. I6 L9 [) }0 C   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
* }- N, ?) r1 F4 P1 h   set [trade-record-one-len] of self length [trade-record-one] of self
5 i7 X8 J/ ^, n8 L9 g* z2 k: B9 x- u   set trade-record-current( list (timer) (random money-upper-limit))
0 O3 u5 X8 s& |0 t9 {9 q" h5 b) U8 E2 L8 `# d2 o% x/ c- V
问题的提示如下:
% k7 I4 ^1 _$ N) ^7 C9 Y' i8 r4 C; W, A! h7 F6 d1 Y2 A4 E: N/ W
error while turtle 50 running OF in procedure DO-BUSINESS) L2 G9 `! J! f  K; u8 J1 _8 T9 W3 e
  called by procedure GO; D2 T9 P. F  e6 U; p+ D
OF expected input to be a turtle agentset or turtle but got NOBODY instead.7 P' i8 f2 T. E! U" w+ j
(halted running of go)
/ V2 A% F, m& O7 C0 }0 J
$ U, N$ _& H; r% X2 n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~~
( }# E0 I' K' ?& O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0 g: A  a7 z# |4 E& Q" P2 w
globals[9 I: ?( N6 g- [: ?5 b5 |* i% }
xmax" ^7 {2 {% V9 d
ymax7 v3 I  I4 w7 D9 p, a
global-reputation-list
- m, ?6 a8 R- H+ H2 D! U5 K: l+ j# Y1 q  k/ R
;;
每一个turtle的全局声誉都存在此LIST
) P' Y5 F) l- H. j& Y4 O3 o+ U1 Vcredibility-list
. W: c& H9 l8 v) z/ ~;;
每一个turtle的评价可信度9 n, Y! ~1 T, ~6 b, O2 e
honest-service& _3 g! O6 R6 l& U" \0 _% z' j
unhonest-service, ?4 |, F9 f/ X% r8 ^4 F" P# t4 d
oscillation
0 K. B) o& q( i+ A2 f  ?  T5 B& drand-dynamic
5 z7 x+ Z5 Y) p6 W" Q$ A]
, n5 Z' v- B  ]5 q
- o+ t2 T: S: X6 l) l+ |turtles-own[
- }+ f+ M3 ~; n  e3 S1 ntrade-record-all
/ J1 `* m3 U, A0 ^;;a list of lists,
trade-record-one组成% ~7 j, k, u# V2 u
trade-record-one: D1 Q+ H' x& G, n8 C- U
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录5 @2 _0 o# B9 d* K7 U3 J' Q( _

3 o2 O/ J  W; w& o+ {$ t- k' Z( l;;[
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]]
5 k) _2 Z# u* w  Y  d7 f( Atrade-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]
. ^, T6 g9 C6 n: J5 ~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
6 Y6 ?1 M! @# m9 Kneighbor-total
& s* k" _6 w) U7 J;;
记录该turtle的邻居节点的数目7 c1 ], g' B( e6 f2 y
trade-time) h$ k# \4 c+ S
;;
当前发生交易的turtle的交易时间7 X" ~+ j$ V9 C5 w+ x, }
appraise-give7 X0 i8 b! V; E: g4 f+ R; [% B! [  q
;;
当前发生交易时给出的评价
- U( w1 A, {7 U, y" Aappraise-receive. |7 l& ]1 n, \, M/ v* P
;;
当前发生交易时收到的评价
# U  _7 _6 z, J- [6 b9 T3 pappraise-time8 W  y9 @! r: @% H, Y/ V" z
;;
当前发生交易时的评价时间5 {& r8 Z2 c7 ]. t" N) e6 `$ ]; ]- H
local-reputation-now;;此次交易后相对于对方turtle的局部声誉4 V! A* O- t0 }/ C& O5 `
trade-times-total
  a% k1 f" p# u;;
与当前turtle的交易总次数' @; h( I8 x& @) a
trade-money-total) z( s4 r  h3 d. i, V) c
;;
与当前turtle的交易总金额6 d$ ~, d9 [% x3 B4 Q6 d! N7 L; \
local-reputation8 y) g7 b8 b7 A  L# b$ l
global-reputation7 I+ f( F$ S4 V% K: ]
credibility
- M: n! D4 o- M;;
评价可信度,每次交易后都需要更新# n* ~  ?0 T% P5 A# x, J
credibility-all9 D8 B8 i6 o  u6 D) q# m
;;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/ W2 U* c& W8 k6 G8 o
( Q8 N# v/ y, y; [" g) h3 b
;;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
* L0 O1 W  |! V' h' Ecredibility-one
! V. K# G$ p) S  v, t6 j;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people4 K0 ~$ E  p7 s& W  j% f& [
global-proportion3 ], `2 W9 ?1 ?9 K
customer- e  I+ j6 O  `% B- O9 A
customer-no+ R2 v- ~% i7 c" _+ f! \
trust-ok
  J5 m6 v4 y' e+ n0 Ntrade-record-one-len;;trade-record-one的长度0 s$ J5 z. T; P' A$ h
]
7 Z! [, ~- m! h
( x* ~/ ~1 }5 u0 k# s7 U$ |;;setup procedure
' X8 b- H5 d( C# c5 J( x$ J) ~" {2 M! ~/ z' F) j, G
to setup: R9 r9 a3 F$ f; n& Z$ V
% _! q$ E; R6 h+ U: G
ca
0 u! {0 q; M' y, ~5 c' r

7 b. K+ \' b, Qinitialize-settings

( ^# N+ }  U5 c, Q$ E9 r9 t5 B! m7 I: L$ @# `5 q, @1 p+ ]- ?
crt people [setup-turtles]

) R6 v! K# {4 ~/ k7 V
. |6 o. E' ^; Z9 Q8 vreset-timer
: Z$ N- t+ F+ y8 Z) W3 e: x! O3 J% ~( m
6 g; ~5 m! ]2 Y# D1 z7 G5 q/ l
poll-class
. V5 |) J1 p7 x0 l" H  b4 _" v
  Y7 l- z3 _# g
setup-plots

3 n3 _$ j; t  b6 c6 Q" G
, j- z5 |3 x) K: W9 n5 ydo-plots
) d+ H: g: j  o
end
0 Q5 a. |( q. E8 J2 l" {8 b( ]. A6 I% X( H# H4 A* B
to initialize-settings, d' i8 s& R, G4 y5 m  x
& V/ _- R- C. M  h; I# x6 [
set global-reputation-list []

6 A( `1 c- R' H$ ^5 ~: f5 c6 @. O" G+ U4 M  J, _$ ]
set credibility-list n-values people [0.5]

$ e6 d7 @4 u& P  Z* B% S
2 x+ k* S: P) r) e6 u  m( [set honest-service 0
2 i$ @/ B2 p, w" c; s  G4 a

; Q, e8 X. Z" n+ b6 _set unhonest-service 0
. p' L1 p& w: K) U0 ?
: v4 {- J! {0 z/ q4 b
set oscillation 0

: b6 R2 f( u: T9 H5 i! S; O+ |0 t5 G3 j  V
set rand-dynamic 0
% u- e$ V/ l; m4 |; ^$ ]/ C* @' Z* z
end
2 N) C" f' }$ p, ?5 y4 G
; z5 M2 F8 X: j2 Wto setup-turtles
6 F/ T; q# H- ~9 Q( M& _0 Yset shape "person"4 j8 Y, b; c! n- M- N4 d& _
setxy random-xcor random-ycor1 P7 |4 ]" o5 a1 f4 B4 B2 h& m
set trade-record-one []
+ X7 S% E" b7 C# u/ T% u: v/ q
! \2 {& t4 N* k% A( `8 a) k
set trade-record-all n-values people [(list (? + 1) 0 0)]
; k( X: b. H- p4 o( @8 |
$ a% ^0 @. ]  `" o8 s/ Z! P
set trade-record-current []
' o" W! b" v3 F+ pset credibility-receive []
1 d; C  r1 C: ]set local-reputation 0.5$ J7 ?/ p7 _6 l6 j" c5 a' q& w
set neighbor-total 0
( r- t! B. G8 r4 o$ s4 l2 P7 I, mset trade-times-total 00 N1 G( ]* \, N, G& @1 t5 `
set trade-money-total 0
5 g% Y& t* x: ]set customer nobody5 ~  x& n6 ~8 L2 d: u9 E& Z
set credibility-all n-values people [creat-credibility]# V  s/ g9 S& I3 h* E2 ^
set credibility n-values people [-1]
5 V. m# N* Y; L6 J/ p2 n' Fget-color/ p3 U9 a# S( t) V

$ q2 T! b' d7 [9 z' y# w' Wend
+ |/ S& }8 e- P( D! c5 h
% X1 W1 [( P' n( M$ Gto-report creat-credibility
* m4 c2 t& K0 S/ ureport n-values people [0.5]- }, E  _7 g$ S" S$ q
end
6 B- _9 P' ~. i
% O0 i- H0 h8 h6 Z4 g( `9 Wto setup-plots
5 q5 d* M# ?: b
" h0 J, P( o: Cset xmax 30

- V! s7 b. i3 R* a. c/ h! }8 }6 b  n8 v: Z5 v
set ymax 1.0
& ]$ b/ E. z+ g! D/ m, P: E: |
( m& ^- r. m; r2 x
clear-all-plots

" o2 P& l+ G, R8 t  D9 F* S. p, \# C  O
setup-plot1

8 A& H! W5 S( e# U2 N9 l8 {: m0 U* r* Z
setup-plot2
, f1 {0 S5 \; ^# ]4 `5 D5 J8 J

; {0 e: d! y* w" t7 n6 msetup-plot3

6 m5 Y4 y$ U7 V" h3 Nend
4 L$ h6 z  Z: ]8 P+ u7 O
4 {- o- m9 M$ \) t;;run time procedures& Y, P8 K9 W7 m; C0 b

" L! [( i) E$ ?3 \% R' A1 @to go
) @# b4 S% T( q7 k3 b5 _; C- c- x2 T; d
ask turtles [do-business]
9 c( @- O4 d6 K" L; y4 y: [
end8 P. D$ z7 Q" W

9 x1 U8 F/ `1 yto do-business
$ D5 ^3 o& m$ f- w6 c: |5 a

4 h, _2 h: n4 `- V8 y( s7 [" c" G! L1 r6 @; c
rt random 360

. k4 Z9 S2 G: Q+ M: U6 @. w
) z& |5 n+ W1 ~( q% V8 xfd 1

5 @5 \4 F' `2 l1 }9 M/ ?7 O
2 R9 V) c( K7 h' V$ E- `ifelse(other turtles-here != nobody)[

9 ]& F+ ^" }7 ]1 m4 x8 H; }/ v1 t
% j4 J' ?. I$ y6 zset customer one-of other turtles-here

5 G! R$ R2 s$ M# a5 U9 U5 A( ^; G' v; M$ x; ~
;; set [customer] of customer myself

0 _' g' F$ ^4 Y  d- Q; v9 k; F' V5 G, y! Z( {. L; Z
set [trade-record-one] of self item (([who] of customer) - 1)+ o4 Z' j0 J. V* ^- [+ A# t( A
[trade-record-all]of self; Y7 j" w# X+ Z# U9 H6 C! Q0 K
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

* D# s7 G: u0 C6 r  Q& s( _
9 y. n/ w! G- b8 J. N+ yset [trade-record-one] of customer item (([who] of self) - 1)0 n9 _$ M! b2 Z. A$ Y8 {7 y. a
[trade-record-all]of customer
/ l8 z# S5 S  i/ E0 P3 X4 J9 K
% q" ~8 [3 d: e0 g4 _
set [trade-record-one-len] of self length [trade-record-one] of self
/ z  {. u# y3 {8 `
. `% |( N- ~" \, f
set trade-record-current( list (timer) (random money-upper-limit))
- v' o4 F! b  e6 Z5 N' [

$ F: j2 E9 m4 \7 Zask self [do-trust], O9 ~" N7 b& k. K! @
;;
先求ij的信任度* x2 F& @) b4 F1 S$ K
0 z# H* s, ~2 r8 P! _* z( Z
if ([trust-ok] of self)
  v; s0 f( `* \$ e+ h' S;;
根据ij的信任度来决定是否与j进行交易[
0 x  |& Y+ v5 F5 a$ s. ~3 r5 w9 C' v+ \ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself7 @  C. {* j1 R& p3 x2 S
9 L1 Z4 r" [5 j" f9 s
[

3 _! W9 {! Z) H( j" Y! {; Z, r  m: Q0 t8 X' a! _
do-trade

( a2 v; k* [* |  A( ]3 l4 X4 |- d( X  t$ Y6 a5 ?
update-credibility-ijl

6 S: S; w5 h! u* E
9 N% H9 T9 S$ J& W8 r5 tupdate-credibility-list
$ W  W$ ]* D% d$ W0 @/ p* s

/ O5 W+ E7 G- g$ l  @- [/ w% h
, R6 n! I2 |* L/ b, G! E' L5 n& Y" Jupdate-global-reputation-list
  f& W3 F; z" _5 g& B
4 Y8 `, N. {- e" s: e% C7 I
poll-class
* Q# u5 O* r5 U; |8 h7 [! f

+ S0 @, H1 w5 s! t( j+ i' Aget-color
- \# W0 q$ Q" `
8 |8 }' w( J3 i9 K
]]
4 {! o& u* D* o4 l8 C+ z5 s4 Z7 J& ]. s# Q5 y8 @
;;
如果所得的信任度满足条件,则进行交易. [- A/ Q+ @) L/ s3 B, A7 u2 ^0 r, o2 s
' k  C2 k& m! I  j0 P
[
0 J6 y8 `. f2 C

- ?' c1 E7 }& R9 R+ _3 Vrt random 360

$ t3 \) K7 ]7 U: j) A+ E8 z% B/ ?
# _( m. P  b; m0 S( M4 E" c8 b: Gfd 1

4 U. c- b3 V. z) k( P" {2 h0 T
9 P" I( q' L* [, }) Q]
( h- u/ P4 Y7 y. F. G. @6 `
9 J+ @# L  \! K# |4 L) Q( F7 ]" {; W
end

" y! J; m- X. J8 o) [( ?. g
3 V8 }+ Y8 u6 K7 Y( ~: s- oto do-trust 6 N- P$ W  y6 G( Y' ^3 w" e' ^* l
set trust-ok False
4 n- O* Q, T8 R! v' f& u$ t
) Q: w( V) s( c( [) N$ u' H

5 n7 T# r1 ~* P1 _) V% `let max-trade-times 0
1 m# L6 G2 g- s% j7 z! Hforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]: S6 a' P" h; L1 l7 K) L
let max-trade-money 0
: P& X% d9 j4 K6 k- X! a( Jforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]5 i+ ^* B/ \' a$ f1 ~* ]) u3 H9 g# 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))
! \& v% X- I0 f* K7 W! a% m/ h# J9 e  ~& j+ u
3 }9 F, J3 I4 {/ T& _9 s0 F3 J# C
get-global-proportion- ^6 q8 g1 S' n1 I1 ?
let trust-value  F8 [: k) A/ r
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)

! l1 K" C/ m0 d2 K" H' ?. Q" B7 zif(trust-value > trade-trust-value)# |. F* r% D0 ?0 Z7 ?
[set trust-ok true]
8 Z* v; p6 Z" L/ }0 Oend4 f1 q/ W, ]+ J1 H: U* m: y
. `1 I2 e- r8 @6 R: m
to get-global-proportion
/ k. G3 N3 z4 V! difelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)( f# [( b  V7 P) `' ~
[set global-proportion 0]
: a) ^) m% c$ A8 h- t5 O[let i 0
. H# D) C7 o" B1 elet sum-money 0- r% B; X# ?' A0 e; i1 X: }9 y
while[ i < people]
  A* u" h6 ~( o2 P; n) B2 ~[* ^. ~7 k4 q* r; x4 U9 m+ Y
if( length (item i1 [# J, H) Y  ~" K+ A! r7 C7 S
[trade-record-all] of customer) > 3 )

: [- y6 f2 C( f. w) I% a[" k1 Y7 Y6 @# o) l( C# u4 J$ |! o
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))% a+ J/ m' x4 @
]' x/ p9 A7 U) I1 X$ C
]
4 ~! q7 B2 _. |, h3 g6 Flet j 0
$ q' ]. M* l( \1 W: q/ Y( G" wlet note 0
9 r: k( I2 O. v( I" xwhile[ j < people]
" V% `  P9 S4 H7 {6 v[
4 d/ d' I* r! K2 K( ]/ o# O2 Qif( length (item i& x4 m$ K6 Q- q% p, \: C" J
[trade-record-all] of customer) > 3 )
: j4 U7 x5 B) |* Z$ n
[5 @9 l' d0 P. O( t
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
" I; x1 a# b; f% Q' o  ][set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
' h9 ^: \1 T2 S1 D6 C% C1 v[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]: ?) f. i' a/ I% \$ c! H: Z1 Z
]
6 H( P' Z" n* }! [; v9 L]0 T' u/ ?0 x& J0 ^' Z$ |- t# r
set global-proportion note
+ e4 C4 t* y! M& q# \]( I& M2 K" Q7 V8 z* C7 `
end
; f, {* u$ e; A3 z. d6 d! N: z, ~1 P
0 T9 M; V( I: S6 p1 n$ rto do-trade
2 {5 P- W/ D9 w1 m;;
这个过程实际上是给双方作出评价的过程% J" d/ M" F! _# d1 b* n
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( K: Z/ a' U' |8 }8 C$ }7 Hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
% U9 s5 d# z* T. mset trade-record-current lput(timer) trade-record-current
- x3 x9 Z0 D! k6 F8 O;;
评价时间
% v" ^; n# m# w9 s) E1 \ask myself [9 f9 u' J8 F3 B* O( o
update-local-reputation. v- `3 D& L: p. x6 T
set trade-record-current lput([local-reputation] of myself) trade-record-current
9 F$ k. M2 v- n7 D]
0 T) N0 ?& y7 c; tset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
* f: B% [1 U! ], B0 a;;
将此次交易的记录加入到trade-record-one
. t6 d! A- X0 S6 _2 V/ gset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)+ Z% I  k$ H" y9 ?4 J
let note (item 2 trade-record-current )
; a7 ^; V! r* g2 S! u" {set trade-record-current$ I- l! x6 t" i* {7 |2 q- m' i
(replace-item 2 trade-record-current (item 3 trade-record-current))

( n- V* n2 P# L# J* ^set trade-record-current
1 ], Q# k- x# N/ m; H! w5 B(replace-item 3 trade-record-current note)6 j7 v- r) A- K$ i1 W. d8 F, G
, {. k6 d$ L# U6 t* x2 q
8 W. [. u* A9 Z$ D5 j8 I
ask customer [
* r3 J# g- w. V# u1 U6 Xupdate-local-reputation" W3 P0 J$ _9 j
set trade-record-current5 A# E; ^2 c9 d6 w
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
/ n. o! Z4 z, I6 `0 S5 o6 k7 d0 l
]/ L' @& i5 c: B* J% C

8 m9 F+ s" F5 c& W3 A
- t: J6 R& {+ P6 K0 V
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
2 a' S" ~8 P! |0 C, ?: [6 A
* l' E* ]$ i$ ~# V* P
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))4 v" L  n# C5 x$ T$ Q. _
;;
将此次交易的记录加入到customertrade-record-all
- t' y0 ?9 J; ^. B; @* |6 hend$ H9 d: z; K% _5 [
- |7 b& \4 d8 z5 `3 ^; l
to update-local-reputation
2 H0 x8 G2 V; n+ Jset [trade-record-one-len] of myself length [trade-record-one] of myself
( \7 d4 X5 U5 d" R; b% g1 c. k9 t2 @" b8 r& J. L# m% b9 o, x; I+ F
2 [; t9 D# C/ W& m5 }# z* {! B
;;if [trade-record-one-len] of myself > 3
$ M8 T* b8 R6 J! {3 m  d
update-neighbor-total4 c3 f$ i3 p" w& z1 r
;;
更新邻居节点的数目,在此进行4 D) x3 Q2 A$ M
let i 3; {" G& J5 R  N) G
let sum-time 09 X( {! o" r5 g7 s8 t
while[i < [trade-record-one-len] of myself]
! [( m+ z9 [2 G[- F& K% t$ F. \* Y- g  s
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )# O$ h1 S/ b4 g0 Y
set i$ _1 @8 [' [) f
( i + 1)
* j6 A1 D- q$ W% _. k
]* C, ~/ b9 w7 J* ^
let j 3
& g% D$ o/ ?# z& plet sum-money 0" ~* Y, s. V+ N! v& i' d
while[j < [trade-record-one-len] of myself]
% @/ T7 a* Z; c[
6 G# S: `# S9 X& i) R, y4 G5 e. Pset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)* ~4 I* Q' G3 U9 A
set j
3 Z% p7 N0 [9 m3 g. a; G( j + 1)

; o$ Z% Z. w8 A' a7 {3 r. m; q]7 g2 E5 J& F9 C( [. }2 @9 `0 D
let k 3
# v. ^3 F0 r/ Slet power 0
' U0 v3 i0 O! R: i: h" i1 ^let local 02 m- c( @, N& e7 a2 E3 }
while [k <[trade-record-one-len] of myself]5 Q: R* i3 o. w3 V2 j. f! u, Z
[
) i* a4 ^7 X& n! Sset 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. c+ t# a: u3 x2 mset k (k + 1)+ |8 e% q) ?2 J+ v! A4 o
]
+ m% h1 z; T' F) Eset [local-reputation] of myself (local)3 i; l, V: j, T9 }0 }1 \% m! s! f
end' p/ D( x# f7 f
5 J( h' F7 D3 @/ t2 T2 z
to update-neighbor-total
8 e6 B7 ]9 R6 j3 I6 c, D- H1 a. A4 r1 D% W
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]2 J, S& w! r0 A) w; W4 ~
/ _& S" o0 ?( }: M
! d% c) n& Q! v( e
end
( w: K, t0 ^& E# }
; y5 K6 D5 p4 G, Z! i! f" D6 q& Bto update-credibility-ijl
* ^# {6 n1 Z  Y2 E# Z% i0 E* H
9 o- d4 R5 S6 V3 `5 J;;
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。& M4 U' z" S+ I  q) E
let l 0# ]; R- M( H" \7 G% W5 W4 r
while[ l < people ]* h- M- W1 O: O( {
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
% {3 I# f" M) M/ I+ M7 b! ?  e[
+ u2 m7 ?/ T, u! zlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
3 U8 K" ?0 ]% O1 _9 I3 cif (trade-record-one-j-l-len > 3)
, S$ O! P' p' a+ W8 u[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* V7 d$ L3 G- w" a' S7 R% c
let i 3
1 X1 z- b- O/ E  nlet sum-time 0: O7 E7 T; B" J" C; d0 |4 ~
while[i < trade-record-one-len]
6 y- G4 \7 Q5 S, U2 ][; u4 T( Z4 a1 M" ^8 e$ E8 G
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )* [( i; A9 ^% K( D. i  G. t
set i- f& d! S: {0 v- _- l& w. Y
( i + 1)
7 U3 G& w: J$ a; b7 a5 f; s
]
1 f' \; U4 S- S" Z0 ]* U1 ]let credibility-i-j-l 0
5 Q+ N2 g# E/ U/ p% \1 B;;i
评价(jjl的评价)
2 e$ m; T2 H$ k( qlet j 3
7 Z, E6 {) K* v7 I- `let k 4
5 N/ V2 L/ f4 Swhile[j < trade-record-one-len]/ Q  L1 p9 u+ b' C' w
[
; u4 e. ^6 B8 r6 \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& z1 D3 Z: B8 _, h2 j
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)0 W1 c1 F  E1 j* M5 m9 q
set j, l/ Q% q# j6 Y
( j + 1)

+ L4 |: j' A# F$ h]
4 a8 m: O$ g6 Q' Iset [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 R# F% g3 z2 Y, B2 L+ d2 q% U
* a* d- C1 R) ^( [

3 B  x1 X1 v$ L& h. glet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))" A4 s+ g, _! T
;;
及时更新il的评价质量的评价! e3 v+ R; Z" G% x1 P! @; Q
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
0 H# K1 V4 J% E7 l) m4 aset l (l + 1)) ]6 B8 J) ^9 n
]% x( x6 F& K* c) ^9 ~
end6 A# h3 u/ |: N/ q2 v5 ~

2 I. ~  q: Z0 f9 hto update-credibility-list+ \" Z1 J9 ?- u. a* W, @
let i 0! W2 W4 d. T" Y6 j3 w
while[i < people]
  t7 r0 |) w9 R[
& T1 _1 D  ]" W* x* Qlet j 03 W3 M. J, \+ d3 E* U8 ^. G" N
let note 0* I9 t1 w" h3 C, g3 l( [7 \5 c% i1 E2 T# e
let k 0, u1 A  b6 B- m: J4 A0 R
;;
计作出过评价的邻居节点的数目# f, [! _8 `* U9 g1 z) e: F
while[j < people]3 C% \$ C+ s6 q) `. i
[5 ~' H3 t9 y* K+ f( e
if (item j( [credibility] of turtle (i + 1)) != -1)2 Z! \' C4 N, \( V. n6 @
;;
判断是否给本turtle的评价质量做出过评价的节点% s2 D. @: J# j, R1 @) L
[set note (note + item j ([credibility]of turtle (i + 1)))3 D, N, i  ^. H5 B1 c
;;*(exp (-(people - 2)))/(people - 2))]

: d7 u3 U; y6 I. O. \. Dset k (k + 1), f& ]: i) o7 k3 i
]. q: t1 c# ~+ L# l3 }+ ]
set j (j + 1)! T! S  i8 R; u1 Q
]( O" g$ r8 H3 l4 K% y+ E6 d4 q
set note (note *(exp (- (1 / k)))/ k)6 @0 S" }8 t7 F2 ^: Q5 r) {5 N
set credibility-list (replace-item i credibility-list note)
3 d9 f6 z8 U8 Q3 yset i (i + 1)  P/ O/ ~" B$ ?$ ^# q  p8 y+ a9 k
]
9 b. V  ]/ h" Hend
! e  e: a; m. \2 ?
$ W: ^0 ]* t& v% d/ Sto update-global-reputation-list
: l9 s: j9 l& K! X3 t; Xlet j 0+ f* e" I' T! y; o6 X
while[j < people]! R3 W4 U( C4 F) U2 R, f
[
" [! Q2 d* D4 D9 wlet new 0
2 l! X9 C% l* p! d/ `* z3 T;;
暂存新的一个全局声誉
0 J. ^/ O% {+ |" Slet i 06 B. Q1 r1 M/ ~. H2 y" B) T
let sum-money 00 h# P" \/ P+ Q4 u* N3 Q# Q( H% K
let credibility-money 0* E7 ?, p: {- O( @& d9 J
while [i < people]0 Q  @; S8 d; ~9 Z, D) M
[+ X0 Q3 k$ C* N: y) g# ~3 D
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))3 s! F3 _  v- n5 G$ X* V3 B& K
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))% f6 r' m! f" N' g3 H
set i (i + 1): k9 @2 X: N8 K/ C- g2 B
]1 v; T  z* |3 X" S6 ]) j
let k 00 |5 J( V8 j6 T5 [5 l( `
let new1 0
# K! j) D% c: k* Y. rwhile [k < people]3 g) q6 ?8 m* e; f5 G# Q  h9 ^1 X
[4 G# V1 X" H- W3 {( T( }, M
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)
) U, C/ ?5 Q3 W1 d# x! h1 `7 Jset k (k + 1)! Q+ Z% W( ^, t0 V0 D2 K& \
]; j4 o; Y* q% v2 i9 v; {" g" S
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) , b5 L" W# s" f9 p
set global-reputation-list (replace-item j global-reputation-list new)$ F7 Y5 {- Q* t0 w3 `$ n
set j (j + 1)
" I1 q9 N0 T7 u+ E. k]
/ Y7 r  J" v0 {/ I  @end- c! F5 e) o* w  V- z0 s
$ ?6 h6 X9 k& b
  E, j. x/ C# x/ }: l3 Y% ^

# p8 n- K# m: P7 [& d# ?8 L& _to get-color
' l  M+ S' R9 u) c( h4 G
( ^# Y1 ?6 e9 R  a! N$ x0 ^set color blue

- n( T! p2 e9 z( i% M" z5 Wend
- [' a3 a: m1 S" D1 g8 y+ a0 y$ L' P, q( z1 x6 F
to poll-class
7 @1 ?# o8 i( P+ fend3 u$ P* D  F  G
- p* z  x# w( D! e. v$ X
to setup-plot1
) a% q( H, m0 L) n
2 r" g  l. ^. S; p, z5 tset-current-plot "Trends-of-Local-reputation"
& o4 Q) G9 i: ~  q! k5 K& l$ k. Y

8 D1 {2 \: O; _! p' y, P! \set-plot-x-range 0 xmax

8 c. ^5 X5 ]' ]+ N& g) Y0 v& D9 d- ]- b. T7 @
set-plot-y-range 0.0 ymax
) e) |( ~& k( d8 W7 R" h$ ], @
end
4 J9 h5 N' b5 m8 Y5 h4 b; I2 Q; r  t( ^1 `/ l. t
to setup-plot2$ B+ M8 B1 O- r. t0 l
! s/ V5 ]5 r% m* @% f  H4 }
set-current-plot "Trends-of-global-reputation"
  @1 h. I7 w# T  H% }  J' E3 I
1 c* Q" N, P1 H3 i
set-plot-x-range 0 xmax

) ~: e- m" ?! @( u) H# |1 v7 U. G$ F8 w
set-plot-y-range 0.0 ymax

0 r: M8 ^' ^; F( m$ Q) gend7 v- ^& ]  `. @6 ^& D2 Z8 P% W+ P: o

1 V& N  F/ D, c" Gto setup-plot3
. u! v9 r8 a2 Z  u+ ?: Q: X( W2 M9 r3 f1 W- l% F9 W4 x
set-current-plot "Trends-of-credibility"

' y) [  H; e; f) b* e
8 J. v: V8 \5 o0 U: Sset-plot-x-range 0 xmax
7 w6 d% C/ S/ m/ w9 u
: f1 J3 E" v- e; o. b! w
set-plot-y-range 0.0 ymax

! g* Z3 O6 i* v: ^5 e' B. K6 Lend  @2 `% y1 g; X. G* ]* {, U0 o/ e
# b' V- z0 Q6 ?8 x# I6 F  {( _8 {
to do-plots$ ~0 W, I- W: E- `+ H
set-current-plot "Trends-of-Local-reputation"
, k4 q) ]- P0 i* ^set-current-plot-pen "Honest service"
( P. L8 R$ F0 ]end6 u, P* f8 J0 d2 E$ M) m' x

0 f, {. Q: v4 g, }[ 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.
6 C' e3 O) `, i# J; v1 u8 u, J  u! X, S1 Q5 Y2 t* I$ X" e# a2 l
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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