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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:- ^2 z0 {# x( |1 M! ]
to do-business % }  r9 h+ Q! V  C  l
rt random 360
/ U# [+ @: r( d+ \$ r$ j4 P fd 1
  T# @4 |' x4 m1 v' n5 c5 V* s ifelse(other turtles-here != nobody)[/ L' N7 ]  l2 }8 S% 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.
4 O* h+ f. ~% ~$ G. w  V2 c7 e2 u   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    + j! d) u% \3 H; r1 O6 _
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
1 V7 K( S. B& D& \: z  t   set [trade-record-one-len] of self length [trade-record-one] of self
! N6 X* }& b/ S* G2 Z% q: Z   set trade-record-current( list (timer) (random money-upper-limit))
8 o) g5 i' H( p8 a, N0 f; S) ^3 l1 v7 o7 X' b
问题的提示如下:
, z- U$ `  N0 N1 Z2 q0 c( n- i8 c8 n
error while turtle 50 running OF in procedure DO-BUSINESS
& d9 X# m* h9 c. `/ `4 e# z  called by procedure GO. z  {0 I1 Z, l# w3 I* o8 U
OF expected input to be a turtle agentset or turtle but got NOBODY instead.( H+ Z9 C2 V4 u7 ?& z! ]# ?% s) m
(halted running of go)2 _) Z1 E" [. D3 g& N! Z
& k; F; G6 ~* x+ r
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~~
; N* `# u! W1 J( g1 {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( ]( z( M, d, ^# f  {2 u
globals[
7 A1 ?# r, h) \9 m1 X: vxmax6 M9 z5 G  u6 k% d# E# Q
ymax  u% T0 h0 H' T4 A+ I
global-reputation-list$ r$ g3 N; C! S2 A- B

$ ^6 o- H% h- w! C) C4 g;;
每一个turtle的全局声誉都存在此LIST
  R( F. T( X$ R% x# Y; U* O3 y7 Ecredibility-list
8 C0 c: h) H$ t7 ~;;
每一个turtle的评价可信度
5 o! M0 J2 T) o) l; z& Dhonest-service
. Z9 Q* m7 i6 n% U+ @& X! z4 \/ ounhonest-service
) Q/ F, O( R0 Coscillation, Z( V9 ]! c& r: D) E: M/ k
rand-dynamic; f5 d2 _4 E& W6 f: f1 A3 `
]0 q3 y8 ^+ g, ~
: |3 ]! J2 y' W/ x+ X
turtles-own[
7 w  k8 P9 X9 r; b3 Y9 [/ N' Ytrade-record-all8 Y* W6 s; z  z+ r/ _$ S* g5 M
;;a list of lists,
trade-record-one组成, M* _! n0 |: T5 n; z! R
trade-record-one  i; w# R- L& _
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录6 k' L. T4 w5 K) I

/ r6 }( ~3 H5 ^3 R;;[
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]]
- O- q# [" f+ P3 Z% f6 rtrade-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]
# I' B3 m* G9 P8 Y5 ?; acredibility-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list4 u2 u# n0 E; x8 }: Q5 P- `- @+ t
neighbor-total& E1 l/ q( k8 t% g
;;
记录该turtle的邻居节点的数目
( T( \, v. w" c2 n& itrade-time
; v; l+ l9 D. i6 e;;
当前发生交易的turtle的交易时间- n# l7 C4 w! o, {, H: ]0 T
appraise-give; R! t1 r+ Q9 q5 J9 H
;;
当前发生交易时给出的评价
3 x3 h, L! N# gappraise-receive# J- d( P2 v& K
;;
当前发生交易时收到的评价, r7 K& V1 ?. Y; h
appraise-time; Y) v- u2 W6 j/ T' L6 C% j
;;
当前发生交易时的评价时间7 Y# e: S6 O) I
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
* P) e( _) v; i6 o; y6 J! z9 Wtrade-times-total: T4 N1 N1 N0 `/ ^
;;
与当前turtle的交易总次数& c3 A! f9 d4 y  L# m% b
trade-money-total! @9 e% T5 d  E9 }! k; [. z6 i
;;
与当前turtle的交易总金额
. W2 E" ^. y& L* flocal-reputation
# n0 B! p. ^- |( n; Y' c1 X; mglobal-reputation
* L. E" C, D' m7 h; Hcredibility0 l; n7 H) @$ |5 r$ O
;;
评价可信度,每次交易后都需要更新& w, e2 E+ P! C9 N3 |4 W1 p8 v
credibility-all
. L' ^" r& @; O3 G  _, N; q;;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
. `0 r. S( S3 N1 E3 B( `' n9 f
! y9 }0 H' u1 z) x4 h- G;;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0.55 b$ R" D# ~" u* W! s
credibility-one
) P( c" n: u" X6 ?# l6 q! K;;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
/ u! J! O8 `- C7 e5 N/ k% bglobal-proportion
6 m) r+ @9 ?) ]1 f" G) bcustomer- A/ G6 r( a9 o# r9 N' S
customer-no
$ o% @0 U% F+ E. N1 y4 c7 Ktrust-ok% f' o# F9 l) g4 O
trade-record-one-len;;trade-record-one的长度
; j6 H& D) ^) u" R; A) s. s; []
- m  ^9 _- O3 G+ B+ Z- J3 ?9 l2 E* A3 o
;;setup procedure# T9 P1 U# ^6 K0 [/ E

% i+ R+ U$ e5 c  x$ Ito setup' |) S9 k! L: Y* i  X# r
' N* l  L9 G2 m" Y) m$ \0 E
ca

) f+ B! {$ P/ y8 w
7 G: H% k0 w0 D2 e5 I: _( minitialize-settings
1 h# H2 N  l/ l, O7 g) p
% P) R8 _8 B: _, F% \0 C% L
crt people [setup-turtles]

$ H( d4 d9 u) o
: X( L2 g& p& `" Ireset-timer

) K% `) P1 X8 _( X" o; f( ~8 c/ @6 ^8 a3 g
poll-class
! ^4 p2 `2 D. x
9 _; f; h6 N' C- r: y
setup-plots
2 h# X8 U, ~) [/ a3 G* I5 x! t
# F3 }8 `6 Y& I6 K) g8 f6 P& L$ [& x
do-plots
4 u; k( D+ E4 n+ c: d
end
2 h6 ~* I# P5 W1 B( m/ }
4 J/ d: f- W$ E7 D+ h5 Eto initialize-settings: D& s6 c% p5 F) c. r
8 ~1 S* c  w# O3 e8 y8 \% L- y
set global-reputation-list []

" `2 s  H9 i  m+ F6 \5 m2 w. Y) a5 H4 Y- U: j# p3 r. c+ i
set credibility-list n-values people [0.5]
" R' a4 L1 v2 j
* d) Q3 V, J8 O9 X
set honest-service 0
2 q1 z. Z% z) b) w# U! R
" J# {+ ]* Y; f( ]5 U4 q
set unhonest-service 0
; Z- d* g6 G( c# u

$ E& \& `+ f+ P0 A3 @" sset oscillation 0
& Z' ^6 G2 c) {+ e: t! |0 x# o- z

! L* a* w  i5 q2 y* Qset rand-dynamic 0
: n% w, O$ W, ~: a9 Y7 |  N
end# Q' m) [: |$ W  G4 f/ u, O
6 g0 n0 R8 v0 w* d3 v' u8 _# {
to setup-turtles
6 @+ h5 R$ Q. a2 U; U4 h( M5 j5 Dset shape "person"8 ^, H4 r/ o& B! [
setxy random-xcor random-ycor7 E7 b2 I+ d" d! G7 D$ g
set trade-record-one []
  d5 H% R! n* J+ D1 A* N: G- c8 |
: R' @7 ~9 K4 [+ m" k: d# S4 J
set trade-record-all n-values people [(list (? + 1) 0 0)]
9 _, \) u7 ?( ~9 F

, @) I6 G# d/ o3 U9 q  {1 k4 j  Rset trade-record-current []5 E, S9 i# K6 Q/ [) S
set credibility-receive []
; R, H/ K5 |6 P& s% c8 Xset local-reputation 0.59 R$ ]( d: P7 S7 y% j5 l
set neighbor-total 0
6 i, ^( m2 ]9 B: N7 |$ Eset trade-times-total 0
* a) [4 H& ]2 ^- ?$ D3 c* Vset trade-money-total 0
2 B# e) c$ A' ?% x$ i  gset customer nobody" @$ f/ R, P' n7 I/ f( O
set credibility-all n-values people [creat-credibility]
: l: F- q4 O+ F, V4 b9 V% ^set credibility n-values people [-1]
! M9 Q" m; g0 n, T4 m6 l6 kget-color3 I% k7 T) }" d8 ^5 s# J

+ Y! b8 a4 a" \1 c, _0 f, iend
& {. k: g  t- ?% t) G+ d1 ]: G6 |) E% u# w
to-report creat-credibility! m0 y& |2 \( W1 P
report n-values people [0.5]
, T4 {5 v5 J2 p6 P3 c% Y( cend/ ]; {3 j! M4 C9 z( L9 [" |$ u" |

2 [8 C6 s( y2 h) Z' [to setup-plots
9 ^* [+ Q( w' M* u9 u
( _! X4 O1 F: j( g& C0 ^6 X3 F5 tset xmax 30

1 j$ a, \/ z, ]6 g  t: y1 g3 ^' ^% B; I1 ^7 D
set ymax 1.0

% J, T  L3 ~  H  h% [1 z
# L6 v- R' z7 P* A, o4 c( Fclear-all-plots
' ]9 g6 W& D& @, U( Q  Z% P8 `

6 M. R5 X* Y/ d3 E' O8 `, osetup-plot1
! ^) U; e/ P* N: V8 [+ Q

! s9 t+ `$ T- ~# |/ Ssetup-plot2

! K% u& w$ `- j. @6 }
; z; r  [! s8 P2 ~3 F( Jsetup-plot3
! K6 `' C8 I' P" ~1 J
end/ \+ B6 x4 A! O) j4 }

$ Q5 F% F  `# i" j9 y;;run time procedures
1 x+ I* J+ T* \( f, r! f
5 W  `9 F& C8 u+ W& R) fto go! F7 J* r+ W9 y

3 f5 d4 n/ [( O( j* ^$ s' T8 M8 Zask turtles [do-business]
# e0 Z4 {# h) ?. ?5 \
end
* x  M1 g$ ]  \$ k" ^! y! `! [2 Q* l# d- z
to do-business
) a/ z& P1 Y% v
. x" A% ]7 g3 @; ~! o4 n, y& R

" j! `% \( s5 s+ \, u( g' @+ Qrt random 360

1 {! A0 v! j' {, \* S( v
, h7 v$ Y/ m! Ufd 1

3 X  |; |" F; }9 @& _! h) _2 k$ U/ g6 e
ifelse(other turtles-here != nobody)[
7 C2 C, B) _% D: }

9 j: v" V4 Q  r, T% M0 D' {set customer one-of other turtles-here
0 {( r- g$ C/ e5 ~

! v" m8 v/ v, P+ E, ]  o" v;; set [customer] of customer myself

5 i5 Y" U) r" C* I# k) r+ e; @  d: k7 q4 U3 V7 v
set [trade-record-one] of self item (([who] of customer) - 1)+ U8 B  l$ {9 _: E  n
[trade-record-all]of self
! W/ @0 ?  t1 y# {;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
( x5 F+ `5 c0 N- L; `) j

5 h7 B$ T$ g# ]4 P# I" M9 ~set [trade-record-one] of customer item (([who] of self) - 1)
; f& [: W; e  P' W[trade-record-all]of customer

* o5 |- {6 J3 _- b" y4 ]9 D6 P1 d7 o& ]1 w; N, N
set [trade-record-one-len] of self length [trade-record-one] of self
% L+ }: B  S& Q& t4 {" B! O% t
  J4 a. Q  O7 Q. q
set trade-record-current( list (timer) (random money-upper-limit))

4 k* n! d( E8 r% h8 |( {8 n
7 R/ R! O3 s" F' |ask self [do-trust]$ F+ ?1 z& n. n6 X6 d$ j9 V
;;
先求ij的信任度
; i' J3 x; s% v# A
; O+ A' ^( U/ T& Bif ([trust-ok] of self)
: U8 ^% s/ A' G' K! l;;
根据ij的信任度来决定是否与j进行交易[  m* w; T) ?8 G: a3 M* c
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself7 g' F( }* C9 H6 K  _) a
3 c2 A0 d5 N, Y) ^4 x1 X( L
[
6 P2 ?* U& B& Q7 U1 J
3 `7 W% Q5 K* |! p
do-trade

* ?6 ]4 }% X4 S8 h$ q, e1 d9 K' k& O  z% q
update-credibility-ijl
5 v9 d' i* O, R  d$ Z2 ~
  y: r$ N# o# l0 f- k% @) b
update-credibility-list+ v) C: s' C5 v; }7 t3 |9 a4 R
" R* F) w- d+ [0 N' P2 m

: Y( o7 I. D9 u# \3 k. T: Dupdate-global-reputation-list

" P' y. S9 G. z1 W- j: V3 b' z  m  M4 f, i" H( t3 t1 o4 d
poll-class

' s9 s+ |: k0 X9 S; b3 j+ n, r$ R4 G  b
get-color
5 x# o- ~& M3 K2 I0 `2 w( S  m
, S& h& ~% W: K8 Q( c8 t2 @
]]
1 `8 |" z# g6 }/ ?; s8 Q* x+ ~. l0 Z' L/ `, u- c: C
;;
如果所得的信任度满足条件,则进行交易* f# @3 X* ?' _  ?

% o" z% B+ |! ]6 S$ @[
3 Z. u7 u) _5 z: h9 ~2 Z* X

" }# `, h/ g/ y4 w2 m- P0 frt random 360
6 s1 s; ^5 X& _, s5 [
# g+ b9 c& L, k
fd 1

* E  K3 w, j- ^& f5 v' V" U. p, h3 S! |% o/ x: \6 w, s' m
]

) @& |$ j, Z6 V( c* s
3 [0 C/ T2 I$ p0 I& n3 }$ qend

6 K  C7 [3 K5 n3 g3 v
, ?0 o2 s4 ?. h5 G2 f4 wto do-trust
- ^1 q3 G* }' }/ y  I2 e- zset trust-ok False
$ O! S, B1 y% k5 E+ H+ t* f; `
1 S* g$ U) V, ^( \# h* ~  Z

9 A8 ]# E6 ?0 R5 L0 dlet max-trade-times 05 L! A+ p4 E  a# Y
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]* Z1 c7 t/ B* b3 f
let max-trade-money 0
( N& c% ~6 ?( u  y5 Q  l! Nforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
6 U* U, ~9 s/ H1 F( G/ p! I8 Mlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
( W& C( p( P6 m0 n1 {. J2 n+ t
8 v# c1 E+ k) H- ?0 j

2 N* [# j( N& ?+ sget-global-proportion* d' R1 j) R, V1 o
let trust-value
( d+ H( g7 E# G3 e3 Ylocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
/ g6 j0 e- N$ Y9 F/ y
if(trust-value > trade-trust-value)
6 V6 ]' `2 i: a3 `' t; o+ S+ Q: o[set trust-ok true]
: ?2 F- [$ q2 @8 l0 ~end
; ^5 @) X, `7 w5 ?& n! m( q2 Q9 m9 c/ u
to get-global-proportion8 g% O, q* s3 p3 T# z( ~3 @
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
: y! j5 N! S! R[set global-proportion 0]
! C3 e- E" ?( i* T[let i 0
' Y8 l4 k5 ]2 P) [/ ?3 _# ]: plet sum-money 0
* z% @) Y6 H( l. Y' Mwhile[ i < people]
0 ]" k( Y4 n5 [- G/ B* y[& i8 P/ O" B! {
if( length (item i! ^4 w: N  _! d$ K  ]7 R
[trade-record-all] of customer) > 3 )

6 v  t+ F# q- t5 j# p2 Y7 ?0 ~[
- h" l" E  o1 p3 Qset sum-money (sum-money + item 2(item i [trade-record-all] of myself))$ b% {8 R- r) \) T
]
% K( t; p/ G8 ~. x]
& z% L$ z% T' v8 I; z; blet j 0
) e: u7 t/ n# i1 x% s' \' R3 `let note 0
/ S3 L1 @0 G" ?: uwhile[ j < people]
0 D1 D  k9 W( B0 p/ |' Y8 R[
8 n& Y, }- X$ I" E2 aif( length (item i9 \1 @5 W4 }( j. s! n2 y6 Q& V8 _
[trade-record-all] of customer) > 3 )
8 }; |6 b. y& U& k; T
[
( L2 H) a2 J  L4 l  A) @ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
' }0 D0 k: s  p) {! Q[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]* Q. Q0 }  \( [7 Q  ~7 ]+ ~" r
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
6 u' Y  `' u7 z, M]
" i; M* u6 u; D4 ?. T& o]5 b0 T8 Z% n8 |1 G) ?0 T+ G0 o
set global-proportion note
+ ?/ R) i7 e3 i, k, }8 }4 g/ ^+ I]
" j' t5 J8 Y; y9 y9 T) t, Gend0 v9 f  \6 w# e3 n( Y. F. x

/ I" I8 ?% M* ]& C& Kto do-trade, u) I* q' p' S3 |! z
;;
这个过程实际上是给双方作出评价的过程  k2 K: s0 M. O! t2 H7 J
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价$ H& u9 n( d2 b: U. e5 p$ y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
# N* j. ^: ?/ d0 |* p* vset trade-record-current lput(timer) trade-record-current! j0 q7 b& }) O" R
;;
评价时间9 p- o$ m5 V; V
ask myself [6 X, \; L7 ~. `# a3 k
update-local-reputation) z: b9 Z, s" b1 \9 A& H
set trade-record-current lput([local-reputation] of myself) trade-record-current0 Y2 z. w6 ?7 p, {% r
]/ h2 W* W6 j* I
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
0 |+ q2 K7 _' @- Q% M;;
将此次交易的记录加入到trade-record-one
: R2 U0 c4 |3 H/ z3 bset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
  w" g8 X! k6 u# L/ o6 M$ F5 rlet note (item 2 trade-record-current )
9 v* ~& X6 Q1 J' Y! U, P3 d8 rset trade-record-current
% m4 p# h2 L9 @, y(replace-item 2 trade-record-current (item 3 trade-record-current))
+ s6 Y: b+ n7 T& Z7 k
set trade-record-current
/ t$ S& H* w: ^) B; e1 h  p(replace-item 3 trade-record-current note)) ~# H8 E/ N0 r- ?% }* h3 W
- `+ f( ^  b! U$ K
2 y  ^+ s/ I8 Q$ m+ v
ask customer [
& @& }  \: L5 v) Supdate-local-reputation& Z, |4 x& ~. S) n! S7 x
set trade-record-current
, C5 X8 X; h% }" ^/ [0 Q(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

) W9 U4 y# G$ K. c* S- r9 U9 H5 `$ J]  ~, d# b) P5 J; }/ s+ _

5 i/ L) X" x6 g& s) x- r

" x% ^0 K2 ~, J* w+ `3 r1 Z! V( Mset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer, {. N9 S0 D6 T9 w

( Z4 k" D- v  Wset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
. p8 n! `, C, h) ]1 C' \2 I$ M6 w;;
将此次交易的记录加入到customertrade-record-all# i$ W  J  r4 T7 q: N" o6 Z1 W
end: x# J3 r$ {7 U/ `" _

& i' v8 @+ e* j% h' Bto update-local-reputation
! Y7 R# D' A) M6 V/ P( l1 Zset [trade-record-one-len] of myself length [trade-record-one] of myself
  \+ y' o, |9 |1 i" h
  w$ G" M7 c4 n* _
! F3 Q1 B6 m* y8 E' p;;if [trade-record-one-len] of myself > 3
, E% z4 C0 [& c6 u/ K% j
update-neighbor-total
) g1 {- M( [$ |1 {! l# ?% A;;
更新邻居节点的数目,在此进行& j7 e  P5 c; S% D; Y# i9 n: a! @
let i 34 ^( R" r" r0 Y# R! k
let sum-time 0
0 o/ o( f. m' b3 L" T3 `, Hwhile[i < [trade-record-one-len] of myself]5 I: W  d. x" W* Z, E3 M
[' _8 F& d8 T1 Q- L& m+ _
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )9 M7 w3 a0 O8 f) x% ^/ t. W
set i
, w3 Q- Q3 {8 X' D( i + 1)

  J- }% \( _  n1 H6 C]
" o! @( u% `; h7 M5 E2 alet j 3
$ e5 p" Z8 u6 t$ u5 w  I+ {let sum-money 0
; t: f, I' X) I+ o, c; Iwhile[j < [trade-record-one-len] of myself]
, c0 I" x- V8 ]6 {: `9 g[2 d/ h# h9 p) Y0 W
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)
' n8 h' Q8 e( j9 u0 n  Tset j
. `3 O# b$ o! L( Q* I( j + 1)
' j- z1 @4 H5 v! _
]
7 Z$ m5 m( ?% R' ilet k 3+ \; b' r* e" n5 E1 J
let power 0
. P; A; r- V; _7 [4 {+ {let local 0
7 s9 O5 p/ P3 k9 P3 Ewhile [k <[trade-record-one-len] of myself]* y# ~7 i3 X7 ~- Y# Q, L* o
[
0 g  y2 |& K7 J' h  M. Dset 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)
" c( ^$ \2 V9 o: I, a- xset k (k + 1)2 Z* z1 Y+ D6 U# Y
]  f* e6 o2 v7 q# T0 [" o1 M
set [local-reputation] of myself (local)% o. g5 P0 U- [$ s
end
5 ~, n; a5 h: g) n$ b5 F3 _- z
! V' E! M- ?. u3 \% ^! k; C: Ato update-neighbor-total
8 \( R9 q, a' Z4 `7 v: y% J- q0 y4 n7 b% n& ]: ~- \
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]& z. S% L4 t5 [* r5 X: B

) t  ^2 K: f4 B( u" P
, z2 e9 @/ u2 \$ e3 D
end7 p+ q" a  Y# E" _: v0 C& C  R
% X4 P0 E! o2 D# w4 m) Z, d
to update-credibility-ijl 5 U: d# N( P$ E+ Z) m$ U
! T8 _2 {9 O, ]
;;
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。2 }, @+ u- H3 A7 k+ q
let l 0
* i) B: f5 K( E0 M2 fwhile[ l < people ]. H+ y3 q! C/ H- f! S7 g7 C, r
;;
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6 e6 e+ Q5 z6 X
[6 U4 s# a' v( f  o- v
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)! o) h/ ?: u  f+ q6 R. ^0 v
if (trade-record-one-j-l-len > 3)9 w. i. C& C) H3 |  O% w- 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" B7 U/ C7 ^' D% j
let i 3
( {1 H# F" O8 M/ ^$ P) O4 ulet sum-time 0) w' w/ E1 y( t+ Q! q
while[i < trade-record-one-len], R7 S/ d7 S4 [
[- e; U$ |, @! v" F
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
4 z) f2 n" N4 s0 iset i' y# l2 i' K5 a
( i + 1)

$ t2 V1 C2 X* |" E& t2 |" ~% W( S]) k- X7 ^, R6 E* o8 P+ r6 o
let credibility-i-j-l 0
$ D' |. H2 O  P6 y;;i
评价(jjl的评价): w; b. T' X4 _. t  O/ L, ]
let j 3& k) H( m" ]3 r) [4 \
let k 43 V# M5 w) x& ~# _1 z% C: \
while[j < trade-record-one-len]
5 @/ L: O& u& s6 F$ f4 Q* @* {[7 ?5 P. E* P8 l9 h, f( I
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; Y! w8 p" s# w3 h$ r
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)" U$ W2 ]& F+ B  P
set j
% T* ^; i4 @  Y8 t, o! v( j + 1)
1 x* I/ K& O7 s
]
5 X' r) \  ^$ k1 S. C, {. Jset [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 ))
# [  g/ v# r) O* h+ N# d! G
+ ]# G$ t8 I0 e% ?
9 G: \; `! y& j9 N) t: `$ Y
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))( y& t- |! s" I
;;
及时更新il的评价质量的评价
6 P/ h, c8 D: ]) A  Z# I  q3 b5 Y' eset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
% R7 _$ S6 K) v) k% ^1 ?, zset l (l + 1)
: i2 c" t+ O6 []) i# ]: k5 C/ f$ z! k
end* _8 z" F0 Y- d  y/ w$ a
4 J* w7 a6 G$ M- S& y$ `1 O
to update-credibility-list% @6 ~7 r8 p9 E0 p5 T# S8 H
let i 0! o/ c. E& y) ]) ^
while[i < people]4 @0 t  L  W# O6 U) Y
[. W$ P4 P' }8 m% h# I
let j 0
# c6 s9 n. m8 t' \let note 05 a3 I7 T$ C; L7 q7 c, _0 z
let k 06 F2 z5 I9 P$ n) K( A6 v
;;
计作出过评价的邻居节点的数目2 B3 k  V0 f# @% I" Q
while[j < people]6 r5 U5 T+ q! q/ ^  p7 h8 P
[
1 u7 A4 q" {0 sif (item j( [credibility] of turtle (i + 1)) != -1)
, _3 m. g/ ?: G( U;;
判断是否给本turtle的评价质量做出过评价的节点
4 C9 X- g. J! w6 q7 W" K4 H[set note (note + item j ([credibility]of turtle (i + 1)))
$ V2 t0 _3 p7 P7 t' q' L0 F;;*(exp (-(people - 2)))/(people - 2))]
  N& R1 g7 M( p* [0 i
set k (k + 1)
3 H( |+ f1 Y/ f]; Y* X: e8 v' J$ k; V$ i
set j (j + 1)
8 }, [  L& r4 m! \8 F* Q( {], z* C- {+ q$ f
set note (note *(exp (- (1 / k)))/ k)
3 y5 `% p! l8 Aset credibility-list (replace-item i credibility-list note)
! Q- Q0 J/ j2 @0 `( L6 i4 P4 k6 M/ Xset i (i + 1)$ n8 E" Z% n3 E4 h7 o0 d! H; C
]; x1 f2 B; I7 d* ?, b" V
end
- D) Q3 i& T6 ]9 H% e6 Z9 I
0 v- i' J& c5 p# N/ Cto update-global-reputation-list% s  h9 z% C: |5 o; I  P2 k
let j 0
5 E/ q% J) W. K# \0 F2 @* [while[j < people]
  S! b$ h3 }3 A[
7 _: |" X8 r' q& r( Z) Ulet new 0# _  s% g+ E* w3 S
;;
暂存新的一个全局声誉
7 x; o$ f& `# R  q2 Rlet i 0
5 a' `  T5 I+ slet sum-money 0( z" W7 l- l, s9 i4 [. f( ~- Q7 U6 }
let credibility-money 0
  W9 u2 N6 _" ^while [i < people]
6 W+ g# y! X- r1 s9 _* P# u[5 B. a7 _/ b/ Q  ?7 w
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
5 w1 D/ A5 O  g5 g( c. zset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) Z4 g1 ^& P; e$ k
set i (i + 1)# t8 {2 @6 V2 X5 l% |5 e: o5 z
]
- J  S5 N! Q" {' P  X1 `let k 0
7 M9 w+ I* \9 X5 P- i# P2 g. elet new1 0
2 ]; D& C; U4 }! Vwhile [k < people]& G$ y( V% ^; V
[9 C# Q0 _2 c! O" a9 |
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)2 B/ Z8 L( m: g8 j+ p
set k (k + 1)
# w+ h4 \$ m$ a]
/ k: n8 f0 s  o# Z! [4 h( uset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) % m% d+ B1 @% q$ G' Z# w7 Z! X; x
set global-reputation-list (replace-item j global-reputation-list new)/ j9 a$ \. O9 L1 X
set j (j + 1), E4 L0 X/ v& ?6 n; ?! b
]& {$ k! c7 z% C2 {+ P6 q) n0 s) ~3 u
end
7 {+ d: B& a# e/ o- P3 ]) |5 j" _8 g
% T8 O( M' V% [9 z3 K) \! f% k3 @) i# o$ g  E9 t* v

5 x0 U& k+ o5 r& W- |! E9 |4 d* R  Pto get-color* _0 `8 u1 k$ S6 x$ K- q

6 `8 Y& q5 {$ m# w. f* Nset color blue

. ^% O* v' e9 N, u* Vend
( w, {4 G6 a5 T, |- c6 h" S' p7 z3 j- j
to poll-class
* y1 d3 o6 I7 Y+ d1 t9 o/ |7 Bend
( U; T0 L: n0 B4 x) E
) o& e5 T+ c, Y6 _* Qto setup-plot1
, J" R! E( b3 O% U1 \" d& L7 L
7 Z1 H9 F# t: C3 Hset-current-plot "Trends-of-Local-reputation"
1 p7 N6 C) d! V
! V7 M& `, T0 r4 E, N: r
set-plot-x-range 0 xmax
3 J3 ?: t- K: r/ U0 L, X6 O
5 u3 k+ m4 |" n! V
set-plot-y-range 0.0 ymax
+ w& F, T* b$ ~5 b* g0 }/ v+ P
end
) ?6 b; o5 E- |
& G" H; Y- H" n# Bto setup-plot22 j# P+ m( a+ F' U
  [$ P$ v$ t. h+ m; e
set-current-plot "Trends-of-global-reputation"
) b1 p; F+ j  C9 b* U2 \& ]7 y

2 a* U/ U* L0 r' Vset-plot-x-range 0 xmax
5 ]1 B% F1 Y$ V
- u, I- w& |6 M& P% {1 C  N
set-plot-y-range 0.0 ymax
8 n) v; ]* Q: f+ m. m1 y# j
end* }1 i2 V$ O$ h, {5 X

( y) I7 L+ N0 _1 ]9 B! \to setup-plot37 v* V+ Z, n8 a5 p

; y; k) s' }1 x4 Rset-current-plot "Trends-of-credibility"

( c+ {* y% e- R) ?: H8 k( V; {* k+ k8 _6 W* u7 M
set-plot-x-range 0 xmax

/ U& f! D% z# P2 k- W4 @5 g( C& x. n/ j  y6 U
set-plot-y-range 0.0 ymax
1 w5 N) l6 L* c- W- R, l+ v' D
end
7 X( I4 w  |+ \/ `/ C
4 J& Z3 J8 g9 s) Pto do-plots
) w! e& d: [8 k8 |, ?, V( h0 Eset-current-plot "Trends-of-Local-reputation"
2 G- X, d( j: b- ^/ Iset-current-plot-pen "Honest service", e1 X+ A; [% J" I; u2 I
end$ @  i0 E1 y. ~" R  \$ r

" f( i9 n- o7 p+ W+ o, R[ 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.3 {" e7 u2 R0 h, K) s0 ^! R
  c+ i# L  M. y5 l8 \4 e6 M: 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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