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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:
% |1 z  V- P/ |3 n: l( k9 Oto do-business
" }" R) ]7 T4 p, g) w1 {6 l  Q rt random 3608 _6 |2 w' j- B4 ~
fd 1' v% l) i( f6 b) y0 ?2 Z# y" k+ B
ifelse(other turtles-here != nobody)[
9 ~" g5 s9 Z& z  g6 O/ C! J5 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.
. `2 `/ r2 y7 T7 ]# J2 |! C   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    2 C2 z6 c4 ~2 o8 x8 ?+ i
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer" |! E- i; f3 C6 ~* V
   set [trade-record-one-len] of self length [trade-record-one] of self) m2 T: l! z2 |; w9 o5 R
   set trade-record-current( list (timer) (random money-upper-limit))/ i3 Y8 P& r: F9 ~3 U- W

: t: z1 A! ^3 n3 |问题的提示如下:
$ _& R& G6 M. w6 x9 h+ S  E9 U
; S8 y0 V3 R$ A# q+ K- O0 Y( i: kerror while turtle 50 running OF in procedure DO-BUSINESS5 o9 \' }! R( T' f* ~
  called by procedure GO
7 L/ [+ T* S$ nOF expected input to be a turtle agentset or turtle but got NOBODY instead.
4 f* ^" u! _+ p' H# h' _- V
(halted running of go)" ]! `% f5 i  Z4 @) ~

. ~* ]$ A* g0 Z. Y& s* C/ X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~~8 }5 d3 @7 p% L, M
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 `- o1 y4 H+ n1 c5 J
globals[
" [/ X% Z7 a+ U. S1 Bxmax
/ q+ [: Z/ ^$ j0 x. Y! U0 zymax- ^# l( q: Q0 e% x; x
global-reputation-list
4 m! N$ O5 C& T% v8 ~$ M/ B% a+ _$ \1 a' D% e4 \& k
;;
每一个turtle的全局声誉都存在此LIST
- Y8 h  T8 v, A1 N8 @credibility-list
% f4 [& C3 l/ m;;
每一个turtle的评价可信度
) G, W) H4 k. V  I5 Lhonest-service
9 ~8 U3 j& Y/ g& q( t0 Kunhonest-service7 k- {; T: l+ ?2 t( r, q, z% o
oscillation2 i' e4 N  g5 Y
rand-dynamic
6 b0 `* |3 f% o" T0 q3 A]
" d7 @( E! S" Z2 _
. x. M/ U& R. Cturtles-own[. Y) u8 [& @/ v+ P- S
trade-record-all( p* W5 ]1 ^2 y) |5 D# A# G
;;a list of lists,
trade-record-one组成
- ?2 V/ N. U( b& otrade-record-one- K. \9 R1 g5 e, l# g; @
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录# _" P: v# X8 O- p" J4 W6 X

- ^- N: n* t) Y* e! r( t! p' @;;[
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]]
/ @& F$ C: k/ z4 E0 L5 J8 dtrade-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]
( l+ R) j+ p  ~+ i# P. b8 ocredibility-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
2 j1 F9 i1 E+ g" ?1 Z" ^( wneighbor-total
5 W( C# b, T# S$ c! G3 W0 e; ^2 Y;;
记录该turtle的邻居节点的数目+ {; c) g5 v9 v; x
trade-time1 |3 Y: P3 n" @) i
;;
当前发生交易的turtle的交易时间4 B8 [1 o  t* y, l+ N9 @% @9 Z+ V% J
appraise-give5 M' \+ o5 |0 o/ J8 J; F* K
;;
当前发生交易时给出的评价
! j8 q4 u9 U' _9 f& \appraise-receive
- D! W" V- }: \( D& @5 [;;
当前发生交易时收到的评价
. g, D! Q- z5 R7 w0 @appraise-time! y4 `, o4 j) H) k2 j
;;
当前发生交易时的评价时间
& o2 z, Q. k3 M$ ^9 r; [( W  Alocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
0 p% ~% Q% [4 O, L7 mtrade-times-total
5 e4 }- D) s; [# o  L( |+ V( n8 P;;
与当前turtle的交易总次数
) {2 s& z; H5 @( D# q  J2 vtrade-money-total: L8 J& Y( Y" l9 l/ U
;;
与当前turtle的交易总金额7 }3 ], I1 H. w
local-reputation
/ j. _) j. n4 e4 U. E+ qglobal-reputation
5 @. D. Q( A' u5 s- o8 T+ d! jcredibility: j, X  S1 g, J- q
;;
评价可信度,每次交易后都需要更新
8 V, Y* @( p, e& v/ c4 M8 f; Kcredibility-all
$ p8 q& [7 i& x6 D; Y. I  E& _;;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
% l, o3 Q  Z$ ?; k+ U) h8 K$ `* a- o. n3 M
;;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0.54 S$ J! o- P. k! A6 V! n+ z( \
credibility-one2 j6 Y' U4 A# g6 i
;;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
  N* `6 ^2 v, l( S" N9 K  [global-proportion- o/ Q$ W8 s4 y" w
customer& V" H' }# p8 m
customer-no- \0 w8 w$ `$ D# x9 J% h5 J& D
trust-ok
* c" x' o3 W, a8 f3 L4 p. K3 l. Atrade-record-one-len;;trade-record-one的长度
! W& O7 L  n8 I) i]+ n5 {# {6 r. |% j( g5 k; j
: b1 c3 u* n  Q' _2 d# O+ k# S( Z
;;setup procedure: e/ D7 v. Z8 R+ @3 \- Z6 Y

: Y: r( c+ l& m, x) h7 Sto setup
, d0 f6 {. z1 `4 D; T# d- S! s2 M/ G0 T9 X5 X5 ~) [5 e
ca
. L7 V! b3 x2 G* I" S# @
7 r& }& ]% n. X; ], X* W9 F" O6 Z" r' Q1 a
initialize-settings
1 b1 Z9 E% t8 c7 U

, R4 j+ y, G' e! i1 P& o; Mcrt people [setup-turtles]
; p  G0 \2 v' P6 C

5 K; _! Q& Y; I, j, Greset-timer

8 F+ Q5 ^1 n" y
% m6 F0 f6 `, X& J+ ^- Y4 ^" ypoll-class

1 n+ i# A+ @  v
* b" ~4 o7 B+ Hsetup-plots
! L2 _* l# ?+ e6 L, s- \

( k; m3 r6 k4 Gdo-plots
# S  C, O; v' r" j$ O" B
end
! e' B& A: Y* H/ Z& F& j) S6 b/ \. s; l- {' e
to initialize-settings
' W" ^! V, {+ o; K9 `9 U9 `9 c1 e$ e
set global-reputation-list []
! A' K- `; O# D  D

4 ?4 C. E' `$ ^7 T. A9 @set credibility-list n-values people [0.5]

. s+ c# r; o' J! }! ]
/ x/ i  `- R! @! e7 h" yset honest-service 0

8 s* {& g; q4 g9 i8 s. }: q3 H" c8 b; N. o; ?2 I
set unhonest-service 0
* R. o# Z, i0 X. ^' c" N$ r
7 k7 \" E# m+ k
set oscillation 0

: E$ I" E& P2 G* ?, r: \+ ?+ S& k# ^/ f, l0 N
set rand-dynamic 0
; B0 j8 T0 N& T; Q+ r2 b  R
end6 j- A& U3 g, `4 }8 O
7 @0 x! ~' ^. W: k" w8 O6 U$ }
to setup-turtles
# k5 U, N6 @: h: u+ wset shape "person"
: z% Q: A  }1 [7 y& {: w) {setxy random-xcor random-ycor3 E6 h; u0 o: n( R) }! w
set trade-record-one []
8 h+ \" ^* r# s, m- A
7 j1 x# H- \" u: O
set trade-record-all n-values people [(list (? + 1) 0 0)] : D5 j; M$ M6 H& a3 a+ }
0 q# b- i  j# F6 t
set trade-record-current []
0 W3 _* v: p; o0 \set credibility-receive []
. N5 y& V: d. f' s! Eset local-reputation 0.5
$ X, W& ?3 y; m. bset neighbor-total 0
  L5 d1 X, w6 J  m/ A8 Qset trade-times-total 0
, q( q9 r- T* G  k3 A  R* {set trade-money-total 0
1 o" J' `- C2 S1 X# l0 \  Uset customer nobody7 O6 V% s; Y  ~
set credibility-all n-values people [creat-credibility]
7 Y4 o6 S: t- Q$ o6 Cset credibility n-values people [-1]. P- I% U+ I$ T
get-color
, A5 D' |1 ~8 Y, q8 u* C
9 M9 S  G9 Q8 z: U
end' W1 |5 d6 K) k) N

0 m7 ~& ^6 s" X5 x/ y& P6 Cto-report creat-credibility) s% W9 A# }, J6 ^8 B
report n-values people [0.5]! h+ c0 ?9 w4 d( d+ l! P: Z
end4 N3 ~( m# \0 l  ?7 W: K$ |$ y
0 H' V8 J- ~2 V! E
to setup-plots  ~% j$ q9 J. Y" Q' k
% `* U9 c7 a* W7 T( J1 e) i
set xmax 30

7 i4 R) C. y" z) j( C8 \  C+ o
* |' \/ Z  Y+ nset ymax 1.0
5 c/ }+ H# [0 q& R+ w% D1 x

/ u' }* l- {2 P! m% [clear-all-plots

, G  \  }0 g8 I9 G, l& F9 p; ?4 t) D
setup-plot1

  b& ~3 U+ o0 {5 l7 Y
4 ?2 F) J. V) p; k  v2 v9 O8 l" R  zsetup-plot2
0 b- b# R$ H  r* p- E. g

+ s8 e! P; a' A2 E# n! m4 qsetup-plot3
: S  i, V& z# t% w! v; X3 W$ u/ H# ~
end
- o9 U( D1 I+ v0 e' ]* `( U2 m4 O
  |& {0 O$ }7 n5 Y$ o$ d( g2 o;;run time procedures
2 |  h' d- R8 I5 o1 E* J/ o9 ^6 R6 E2 P7 u/ y
to go
5 B' Y1 {5 j; V" k4 U0 A4 ^$ \
: o1 y" q* G8 m. |5 cask turtles [do-business]

( |# N! ?' A) h1 rend
. U. o9 P4 f5 O6 x! I3 D/ H/ P# |- @' D
to do-business - v+ S8 o  I  O

+ V+ r  N! v) ^" Z
! c: q& h, J- U+ x& e6 Xrt random 360
/ y+ z& I9 @0 Y6 r/ b: `2 x7 k
+ L' V# Y+ G) U1 G$ d3 O
fd 1

' M2 z, m6 N; n3 J9 _& I, \, I2 t( G+ z
ifelse(other turtles-here != nobody)[
- K2 h' }8 T8 Y: S: i
$ c7 u- M! _) _) b
set customer one-of other turtles-here
4 a+ X9 ]1 e% R0 E

' p! d7 y: D+ @0 S( H;; set [customer] of customer myself
+ L1 `! K. O" s9 X4 m1 A
. D& q+ X- i( p# c9 X. ~
set [trade-record-one] of self item (([who] of customer) - 1)
8 O/ Q* a% x4 x$ \) f+ o/ S[trade-record-all]of self
2 ?! t% j* C! F: R( Q' E/ r;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
" B+ t; V  \/ h1 X8 i) h

& V: a* o/ {: Y5 g8 mset [trade-record-one] of customer item (([who] of self) - 1)2 a1 {% g! n5 v( x/ O6 N9 W5 p
[trade-record-all]of customer

7 k8 `2 M6 l  |3 P6 O' t
* t% Z0 w& S7 J; A( q$ Y5 X1 uset [trade-record-one-len] of self length [trade-record-one] of self
9 m5 t) J; t* u: z4 U6 p8 T
0 r, @. u7 N; E
set trade-record-current( list (timer) (random money-upper-limit))
5 v' W8 g0 g3 J
+ n# L6 u) z1 x5 D
ask self [do-trust]/ W# i$ |* P( Y3 O8 ]0 _: R. V
;;
先求ij的信任度
7 B. P6 U- h7 x4 h8 Y7 l  D* n& E2 o1 M/ ^6 u$ K  s' D
if ([trust-ok] of self)
! e. k2 N# M) `; F* E. t;;
根据ij的信任度来决定是否与j进行交易[: F4 d0 q3 f1 t. c8 M( a
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
8 ~% q$ Y$ E4 G" _  M0 e( G; K  b
[

! ^  }2 B+ G; T) o
, Z7 {" ?" V% B' u; Cdo-trade
) N, i2 R6 L+ L! z7 w; ~$ r8 \2 |

/ c9 B% c7 G" ^4 nupdate-credibility-ijl

6 `$ f5 [2 O+ x; n  i+ D. V$ p: p$ b& i, b/ y$ p! M
update-credibility-list# u+ b  m( v+ C" |3 l+ @  z! w
' c/ p! A* X6 T& v0 L" G! D$ }

# V8 K9 ]  d( Zupdate-global-reputation-list

2 k" u: ^4 b# {: p8 v6 D
. w* c" V. [6 cpoll-class

9 C  U5 s: t- p! D4 W' u6 p- m
9 D& m9 _# [/ G6 y6 {. p7 z) P' _3 t1 ]get-color

+ U" v8 b, s) X) [4 G" u$ g/ ^5 O/ y1 j) ]/ u3 x
]]/ k4 W  F; D$ v$ \

, X! y, y# U, l) Q0 U;;
如果所得的信任度满足条件,则进行交易" y3 m0 u: x0 ]* H, Y, b1 L9 }) K( l
8 M! z$ r1 {  _
[
" K2 b; s/ ~% ~& Y7 p( `8 w

% Y! E6 ~5 c+ V( N" \. irt random 360
- J1 |) X5 h) B. D

9 x  W  C& |% W1 J$ R5 Sfd 1

. Z! v( ]5 N8 d; n5 P
) T/ j/ W+ x3 o]

, M* K- z+ K; L1 V- u: J2 H, y8 N1 I( ?) }* O4 Y
end
2 K! V) J* @* s7 B! Y

- P7 ]1 h' x2 x2 D# pto do-trust
) |$ R# f3 u2 t, kset trust-ok False
9 R- j9 _! N) R$ G% j- ^- z  |. @8 e  N% i" e. G

1 j: k( ?. N* e5 f1 s8 u' b3 vlet max-trade-times 0
1 o1 _( X7 t% s, ^' M1 R; Iforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]- e; @3 ^1 r/ o% u
let max-trade-money 0
0 y; S) L* X3 v% C( M$ P6 w+ ^8 j" gforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
/ Y: q) K0 H# v9 G; Mlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))! S3 D; P0 Z& T

, z9 v& R1 T6 F
: @+ O. j. D5 ^2 T. _6 U
get-global-proportion$ K" K2 k. P( x4 O" N, {' C! Y
let trust-value
& _: ?2 R& m9 D! L" `8 Q! `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)
; m9 Y6 L# b1 J+ z4 s
if(trust-value > trade-trust-value)9 B( O6 |) J8 Q# |& s3 s4 d
[set trust-ok true]) E) c, o/ S/ S. ~& S. f5 [# f' ~. h
end
! _; z* r8 ~- R" o/ }) ^5 Q) d6 w* H# [$ M3 W$ r+ K! T+ K. B
to get-global-proportion
# z1 k3 c, c4 @& i" h% M' Q/ Tifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
+ l  f# S8 N' W0 e  Z[set global-proportion 0]
+ O; d( i% M  ^- s, h4 i8 f! h[let i 0! f3 L1 Y" p$ A3 F0 Y* k) o/ C4 [
let sum-money 0
$ ]. |0 n7 v0 l' P+ Z( N/ {+ j6 J* fwhile[ i < people]
" K9 ]/ ^. a. N2 T. f9 y  p! t$ _[2 C: \# N. N- U9 a! {/ J3 A
if( length (item i# q# K6 M* j0 X, T/ k- o- @7 K
[trade-record-all] of customer) > 3 )

7 }( P+ [4 L# F! G[
) G  Q  m1 E, n  Aset sum-money (sum-money + item 2(item i [trade-record-all] of myself))3 Z) [2 L/ V  z# T8 j! E
]6 w( j0 M/ B: `* z9 ]
]7 R; g# M. h/ z. P6 ]
let j 0
3 m1 P" u' b$ P" a+ B0 R/ Z% alet note 0
7 l' W9 I; r" T( c( owhile[ j < people]
% v9 E6 h7 Z6 }# |; p[& ~- O  ^2 o6 R
if( length (item i
) Y7 ~( g; p% G# F! G8 t) P  t7 @[trade-record-all] of customer) > 3 )
4 m4 P$ n& m$ a" z% k' }
[
$ M+ v: p" I" t" I. tifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
8 w& `/ ~! o) A, I. I[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
% J% A4 w6 S9 a/ [3 j) Y' I- [[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
) ]+ J0 F  G3 ~6 P' u]2 m: r) A: A3 S: U  Z
]* @7 T: L) P6 d
set global-proportion note
; T. a+ m+ T' F. F( J]3 q: ?3 C1 ?( `5 ]+ e
end/ Y; _9 r. e  u4 R. u6 }: V  k4 I

% u1 h7 D1 J4 U" o' i+ ~. bto do-trade
" |+ V0 u- @5 g) T* l2 g;;
这个过程实际上是给双方作出评价的过程
4 i. ~. b2 A/ O( |) ]# j0 @set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价: B# K% Q& }" a, k
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
5 v9 E& A/ ^1 D. {& V) x6 N5 _set trade-record-current lput(timer) trade-record-current0 }9 f* W9 a& a( S/ e7 b* k, h& A5 p$ B
;;
评价时间
& h, T4 m& M0 ^$ F' X) d0 task myself [3 M$ ]: E# A. X5 |* {2 u
update-local-reputation
( m+ b. V: X" v% yset trade-record-current lput([local-reputation] of myself) trade-record-current
4 L0 n/ k& X1 g0 }]6 D+ d- U* T$ |/ Y# v" `% R
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself( H% c5 j' j( C! M. W) k! A
;;
将此次交易的记录加入到trade-record-one
2 p2 A) W& H( T9 \) oset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)( r5 n6 i4 U+ L. D7 ~
let note (item 2 trade-record-current )  b9 L7 u. l) N4 q1 g/ k6 u! b
set trade-record-current
2 B( S+ |. n1 e* \7 M(replace-item 2 trade-record-current (item 3 trade-record-current))
. }" [; g4 P, F# e2 e
set trade-record-current2 W0 c' {! q1 p2 N
(replace-item 3 trade-record-current note)" }+ j& O( J* b( x& e) T

' o5 }8 w" s! M. X
" @8 w" p* c1 t8 F
ask customer [2 J( U4 c! U) I# z
update-local-reputation
6 A! x: t1 K, |7 Uset trade-record-current' d8 d5 O, U9 t3 N, H+ N
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

" ]) `( @: }% V. b3 w]- M+ E. Q2 x6 N2 l8 m

8 z" z0 ]/ p& e! ^8 n$ P
" [* B- W# M! \: Y# m0 ~! x: Q
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
2 g- {6 @9 A: l2 k# D5 @) q( g

! ^7 L- m1 f; M$ u0 t3 K7 i- Xset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
7 {3 e1 }: f, E;;
将此次交易的记录加入到customertrade-record-all
; H! C5 ?$ i/ x0 aend6 p! s  v! ?, w; V. l0 |
8 n5 w0 g6 u8 U$ g% m
to update-local-reputation
  X( e: E( x9 Yset [trade-record-one-len] of myself length [trade-record-one] of myself  c  Z1 |5 X: m" ~
( w' H: z! V, W1 r
2 B. C% W$ o4 m' h3 {  n) O
;;if [trade-record-one-len] of myself > 3

" u/ o0 @4 \- L& zupdate-neighbor-total
* V- v( u+ `6 M# j;;
更新邻居节点的数目,在此进行
! `$ v# x; l5 W& U+ U1 @let i 3. b$ q! F9 h% D
let sum-time 0
$ r% r/ V  ]5 O) ?while[i < [trade-record-one-len] of myself]( X, t. a: |7 u1 g7 \
[. L8 \' f6 b0 H9 `9 P9 D
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
# U2 V1 j  z' e" @9 lset i
! U" O& I7 R! h( i + 1)
6 X" [0 a4 O$ Z5 P1 S. @$ @
]% H. v  V# L: A5 d' s  d
let j 3
1 b8 D7 M$ l6 J3 A+ X! }let sum-money 08 x  `6 V2 U3 n& q. L, z+ ~. S
while[j < [trade-record-one-len] of myself]' q8 V' e, @* @. @( T0 J$ @
[  h' P2 p/ p* i7 X1 x% M, _
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)
+ v7 V) u2 q" L8 @% q* O5 Y' O4 a& yset j
. f$ U1 C$ c1 W  k! o) C% {( H( j + 1)
6 s/ {7 L2 v! z
]# s; [; \2 B3 E& e3 G) m% {1 D3 D
let k 30 A  @: z/ v$ M2 B
let power 0
5 r+ S  l! s" E( }$ q, H# w$ F+ qlet local 0
- |6 Q- D& ^% ?0 Q( y" R4 Ywhile [k <[trade-record-one-len] of myself]
. E0 `4 w. e* V3 N, x- [[
  x2 W6 e  U) F4 e# U- z% xset 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) : u' \+ T* J! U
set k (k + 1)
5 P3 K/ z/ m5 r% v6 S]
0 y, T3 A3 q( ^1 w, b2 v- L9 b- Kset [local-reputation] of myself (local)0 c4 Q4 n6 M# E" E. U. b' s1 C; p
end9 ~0 y4 [5 a9 R# Y+ Y
+ W; A( J9 j! A+ Z
to update-neighbor-total
! G/ [3 C! Q- _2 F( a. e
9 P* h% u/ c6 ~6 H0 y5 a3 e6 J1 gif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
& W& U+ e, N; d4 T2 C; u) j4 w" s3 I6 U4 O2 k2 z% @8 ?. l
- t3 F/ ]0 ]7 J" g$ Q* m7 ^7 X
end
' k! x0 f2 R5 @8 w# J
) w# M/ F$ U1 k% g; Fto update-credibility-ijl
) c7 {6 \) a8 n9 T
; z* y, m+ q: v' a* H;;
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。  Y2 Y) h* p( C0 T/ a) S, J! h
let l 0" @. f1 r+ b, \& N( y1 N8 ?" s# H
while[ l < people ]0 m9 L+ |; \4 \
;;
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
) u  E, q+ A7 S" ]# t9 B[
/ A9 t: U7 u) `' F$ k; `+ elet trade-record-one-j-l-len length item l ([trade-record-all] of customer)2 H. ?( E: ~, o! c; ]) o
if (trade-record-one-j-l-len > 3)
5 @& p( o/ s7 \[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
6 B6 ?) |: D* C, ?1 llet i 3' _' y  Y9 w1 D  U8 z
let sum-time 0* }' F% g/ n- v* A" I
while[i < trade-record-one-len]' P0 G  o6 V: V7 ^& a1 S- Z
[; Q; ~! v% V! ~  P
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
8 F: n3 J' Z0 Jset i/ v+ U, O; j. i
( i + 1)

0 U" b& l* b# M) |% D# P]
; B/ c9 s7 w6 g( vlet credibility-i-j-l 0
) U8 E0 a& |; d! K4 E;;i
评价(jjl的评价)6 f8 p. x, ^/ b5 ^) `- \
let j 3
5 z$ ~2 T( y/ T2 T8 Ylet k 4) `" J& j* k: W. v
while[j < trade-record-one-len]
" [- }/ k1 R) S[; Y9 O  g6 B9 x3 [
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' ^0 [/ K8 k# F* R5 S* O
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)
9 g% V% l; Y8 h- L$ C2 \* [set j
: Y  h: ]# V3 p  @* G0 Y( j + 1)
$ m" y2 R# p& z; O. v4 x# ]% M
]
* n  v9 E- G1 h) z" A' @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 ))
6 A& i8 S7 b8 T6 o. r; Y0 \& j' a5 K% I/ I' z

. E) w9 q0 p0 q2 ^let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
8 s1 D' y2 d  q; F. B;;
及时更新il的评价质量的评价
8 |* V$ T' m# e2 v2 p- r/ `: mset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
3 o. J; Z9 n1 R8 d5 t# Mset l (l + 1)
! i! ^9 Z& I" T; B! m' z]9 y+ w  k/ K- |4 K( j0 t. A" ~
end7 i1 m5 t' V9 d, c( O* C( \
+ |- g& y! t  f+ T0 M2 c
to update-credibility-list
3 h4 E' m2 c% o: X5 ?let i 0
( q6 v9 x% @1 z+ H# J' rwhile[i < people]: f6 D2 _  K2 ~% u/ E: O( n
[
1 G( z4 u! Q' {6 S  A& n* E; t3 W- Zlet j 0
* q& l: P1 R& Z# Nlet note 0; K4 A+ M$ Y( T$ R5 d1 M
let k 0' x% z- |7 A0 O( y6 M
;;
计作出过评价的邻居节点的数目& N+ s, t& M( ~5 M
while[j < people]: H+ r$ X* z. G$ m; P+ b" U
[
( |4 s' S% T( hif (item j( [credibility] of turtle (i + 1)) != -1)5 n2 t3 {) D0 e9 }, |
;;
判断是否给本turtle的评价质量做出过评价的节点
4 Z* }5 z( g/ Y3 {  n- _  z[set note (note + item j ([credibility]of turtle (i + 1)))! ^: ?1 x+ _6 u% x* C/ r# E' e( w
;;*(exp (-(people - 2)))/(people - 2))]

; i* F! }/ h' i' Oset k (k + 1)
$ t$ C4 }" @! I% B5 z2 r]
5 Q4 F0 I* u" A: Yset j (j + 1)+ R) I7 G7 }% {" H" H, g
]
$ h3 c6 W2 L" \set note (note *(exp (- (1 / k)))/ k)6 m) i( d4 M+ L$ l
set credibility-list (replace-item i credibility-list note)+ w' ?- v, A! g9 q
set i (i + 1)8 K) C; Z* f  }; h0 j( j& l* Z
]
9 @# `0 k; \7 g6 Y8 Send
# R2 @$ J. e2 V
7 X8 z3 s7 v! sto update-global-reputation-list7 ^8 D% K8 K6 p5 O
let j 00 I" _" p1 w6 y% Y+ m( F$ w" w# _4 x
while[j < people]
, Q# \7 ~, D9 N( N( x[
# T: {' b) w9 T+ t! ^7 ~let new 03 [# Q! H" p' g/ n$ R6 U- z
;;
暂存新的一个全局声誉
" n1 h& _0 s/ f/ q; r# @let i 0
& o5 H9 B! F* |3 j+ L, }let sum-money 0
- D% i5 ~$ t3 c/ F  Olet credibility-money 0. t1 j; N8 g/ D& p% w; P  h
while [i < people]
7 ]+ d3 S/ D8 i5 L[" I2 b' J$ a$ T3 C
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))/ L9 A, G* i+ G9 i4 u* @  n. F
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
9 I# b; [! v2 T* \+ ?. T; ?3 `set i (i + 1)& P8 w$ I6 l0 y" c" m
]
/ p& ^1 P0 b; r) Elet k 0" D% @" ~) O; ^1 l% p6 P% @7 t
let new1 03 f# B1 P! l7 O& ]
while [k < people]" a" r9 j1 [9 |  J8 l
[
( g2 D5 f# t+ |% h1 x5 iset 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)  O4 ~0 `% b+ \: P7 u% L/ o7 I
set k (k + 1)
/ R* B/ N& A, o' f2 W1 v]
8 r1 {3 k6 J% iset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
7 |8 a4 ~& H4 u% h1 ^) k+ Fset global-reputation-list (replace-item j global-reputation-list new)
* U5 q4 O+ r5 p, L' P( U3 Uset j (j + 1)0 H* c+ Z- p7 h+ e
]( d; N  q+ P$ H0 P8 V0 L
end
4 u# }6 k9 d# K9 l
& R: a7 m/ X$ |) S& h. O! Q. M& _4 R) C; y% U( _) R

+ ?/ S9 X9 k) S# j. Xto get-color
8 L( Z. D1 u  t& {5 A9 C7 C3 V6 }$ L2 C: Q, n2 g3 [. D- [
set color blue
, O( a  ^9 h' O1 C1 O1 z9 q7 }- E
end6 {- P0 s8 V9 }2 `* s/ Q/ w6 d
' g- i% |% c- J3 v& U8 b
to poll-class. @5 s  J& L, }9 W* Q0 N
end
0 ^2 q5 d$ O% @
! W. d2 l  x# wto setup-plot1
4 M4 J5 l9 X; T3 P5 U) I& U% e1 i. |. m- T5 N
set-current-plot "Trends-of-Local-reputation"
: [: Q3 I5 Y: ^% g3 m! o
" Q2 t, k" l3 v2 S
set-plot-x-range 0 xmax
' t* @9 i5 }' j! K5 u1 E

4 W2 @8 P( R8 p4 g. Z/ @, Uset-plot-y-range 0.0 ymax

7 g+ H* @) M# [8 L( Eend
4 S0 \  Y7 H4 ]& W) V& b1 A* r2 L* t/ S& j
to setup-plot2
* c! V8 ~+ x3 Q" h% o7 O8 N7 m/ P. U) L4 Q3 u$ G4 I- x
set-current-plot "Trends-of-global-reputation"

0 o3 N$ g% {6 H% l8 J, P9 o+ O5 i0 T* V/ R
set-plot-x-range 0 xmax

9 I4 H+ ?0 {; Z! L  ~. J5 a9 C/ z& T
set-plot-y-range 0.0 ymax

5 n' z4 Q# |8 T8 i( G! _  t+ lend
; D2 C4 m* m1 [
; K! I+ W: ]4 @2 Z& Ato setup-plot3
' D( y, U* k( c- l4 s1 x  m8 Z' I; D* y% L" m
set-current-plot "Trends-of-credibility"
  S; H# {2 j4 g/ J9 |
# _) {/ Z" ?9 ], K' `- }9 J# q
set-plot-x-range 0 xmax
3 \$ J1 B9 x8 g
. l% D0 K& z4 u; N( P
set-plot-y-range 0.0 ymax

/ l3 P  T  H3 r" g+ A3 |/ Iend& g4 A5 e$ l1 `. L* w

) @4 P5 N% W9 C0 |+ t0 u; Ito do-plots- L, z  D  p; `' Z1 d
set-current-plot "Trends-of-Local-reputation"! u* c9 Y) S9 \$ N' L6 D
set-current-plot-pen "Honest service"
; o& J5 [1 |) e2 c5 v1 Kend
! Z7 s$ H# }8 {  }) L$ h
: N& }' |/ U2 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./ ~) @" r8 d7 {1 e

6 I1 s$ z: V  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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