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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 u6 h2 \  F( D" H8 J
to do-business % b+ n  ~/ L# C2 f; |
rt random 360
: [$ a" }. c" t+ C fd 1
7 P, T. L( }- E! ^' J* E% A8 n ifelse(other turtles-here != nobody)[
( n, }3 E# x7 E% `" P4 e1 {2 ~   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.) e& D! J) b! \
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
' J$ a6 \6 d, `, O' Y! b   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
' }& f% x, e/ N3 k, p% e7 O4 A) [1 x   set [trade-record-one-len] of self length [trade-record-one] of self9 p5 b3 z% y( X
   set trade-record-current( list (timer) (random money-upper-limit))
7 }- S7 }- J6 c$ L3 X2 l
1 T2 D1 \7 G% l2 {! Z1 B问题的提示如下:
5 D9 d: q1 t) m( A0 X3 z& D+ M4 t
9 R* I' y) E2 Yerror while turtle 50 running OF in procedure DO-BUSINESS3 V# q/ N3 n1 u( l; a8 y
  called by procedure GO
7 I( f  c$ [6 l5 w+ ], eOF expected input to be a turtle agentset or turtle but got NOBODY instead.* J3 w  ~8 e# k+ w5 q; i
(halted running of go)$ ]# W3 S8 N, L# }/ P& K0 C

. o2 i2 ?# S* W- T( B: ?2 q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~~
1 w1 I' ^; g- m; V: k; 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
: Z" H/ w7 V6 S  ~2 r/ }8 Iglobals[3 |, E3 B$ j9 I  ?2 N# q
xmax. X2 v. e" o! ]6 m3 z' V$ s( c
ymax, K9 R7 ^, @2 L# R1 l
global-reputation-list7 t" M! ]4 z! F! N
5 w( |$ R& Q( l5 n; m
;;
每一个turtle的全局声誉都存在此LIST
) A4 w2 U/ u' s& T2 N! {5 Ncredibility-list9 T' F9 N4 y. }0 v) J% r' ^4 K
;;
每一个turtle的评价可信度5 y0 Z$ ^! Q: y4 O/ C  o- k  [% G0 E
honest-service
) F+ ], Y' H# B- ^) R6 }: Wunhonest-service
% r# b) q% b+ boscillation
% @/ g$ E$ ^/ V$ h: nrand-dynamic
9 b% c3 G5 b3 P]
* k6 H& r  I* h/ m" c0 ~  q$ r  L' Z, H* z
turtles-own[
* ]4 O0 ]; u/ Strade-record-all
: V2 o( q/ N- i% U! K;;a list of lists,
trade-record-one组成
  K/ v- f3 H$ O  T7 Y( Vtrade-record-one
! l- X+ B6 {( B) [. p* `2 ]6 V;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录3 I; |. p/ f. Q+ e+ |! G3 j
6 M# P: ^0 d) G/ B0 A
;;[
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]]7 Y& P# v/ z$ Q9 R' h" n0 I; ^
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]/ W& t2 R- U) B$ `
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list6 P) n" B- u1 @! B" U
neighbor-total
! M# g! r* x" s* v;;
记录该turtle的邻居节点的数目
1 x- O& ~3 [! G; M+ D: T6 etrade-time' m9 B8 T: f0 g
;;
当前发生交易的turtle的交易时间
0 w  F0 S! R% M# z8 Cappraise-give
2 S9 ~, Q. M; P- z5 U;;
当前发生交易时给出的评价  }! a2 Q. z6 [9 y# V# U
appraise-receive
. O- d1 f; h) C;;
当前发生交易时收到的评价
( c( l4 P) v4 V( a/ nappraise-time+ Y' ]* f6 Y2 j* I# J8 Q3 `" G
;;
当前发生交易时的评价时间4 P9 |- ^/ p5 q$ C, W
local-reputation-now;;此次交易后相对于对方turtle的局部声誉* j: f" y& B. f- W
trade-times-total
( f7 ?% h6 s( H: K+ e6 c( x  l;;
与当前turtle的交易总次数1 w' G( S! `8 J' L
trade-money-total/ A9 j: q7 G8 S! d* I  M/ w
;;
与当前turtle的交易总金额
' ]/ h; ?3 C* a  K" d, flocal-reputation
/ O0 u9 V# E% j% Q$ d4 bglobal-reputation; K7 @) Z6 K( ]) f% V3 n
credibility# z+ z7 o6 M" n  v  c
;;
评价可信度,每次交易后都需要更新
& ?; O7 ~- q, Z4 ?% ~credibility-all% |6 ^4 @1 R4 y# T6 _8 H4 l, Z
;;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: f( a" d, I8 M
& n6 Q9 g* r4 P. `- x9 e$ u
;;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
3 h* Y+ i+ ]6 d6 D* Acredibility-one
2 C) ]3 D, I5 R7 V; g* J5 ]: Y8 W1 ?;;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& K" X* G3 B5 U6 K% u! }3 ]. C1 E- R
global-proportion, G/ N% U& A/ b2 N1 T3 F
customer
6 d& w( u  ~4 Ncustomer-no
7 e2 q6 _; [9 Z% Ktrust-ok0 w: B9 \/ n6 F
trade-record-one-len;;trade-record-one的长度4 t$ I1 g0 l6 w$ L/ y+ z
]2 w6 o6 I$ B  O, x" m
$ d& ^+ r  f: B. H% ]9 m
;;setup procedure" S' W, A: P/ J: b* N" G

3 p4 U: W& }; b% }' o8 q6 `to setup
  v  R& a2 \, f+ n5 Y
  J) W% N. c* Y; ica
9 a/ u5 R, R9 O2 k. v7 f& s
1 P# C& C' t1 n3 |9 y! [5 L, u: I+ W
initialize-settings

% _# s  H+ f. I# d8 |
+ G6 e  z- T$ U' Ccrt people [setup-turtles]

3 x5 U- W# e7 @  A/ t0 c$ e5 |4 B9 o, z" H' T6 {8 ~! e+ r
reset-timer
$ [* E: U6 d2 A* k( n4 I6 ~6 f9 _

. Q" U/ q2 Z/ U3 e0 _poll-class

/ S! w" N; c2 |* ]( M& l  E6 T7 C4 C2 W7 M( q9 n
setup-plots

, E: c1 a  {6 ?7 d7 ?8 T6 F8 r  _  y% P. A2 T- I
do-plots
; _! o) i9 ?# m, G8 [1 `# F7 m
end4 E( a- v* B" ^. `8 ~/ q
% p5 I5 L' |6 S& [8 a* g
to initialize-settings- d+ W7 f& S! m

# O$ `: v% J5 i, P" M! ?  M" D6 E. ^set global-reputation-list []

* F% \; `* ]  Y
5 a& q. {/ G* Z; }, G/ Z- ?2 lset credibility-list n-values people [0.5]

" {7 ?6 ^, _* t3 d7 l" X& V+ m0 ^1 [8 @) L7 g  {2 f- s$ N7 ]5 R
set honest-service 0
/ f# z9 c! m3 S* J# q& Q; z
! z- Q# u+ o2 ?  A; e, v8 \
set unhonest-service 0

' w+ e; Y+ ~$ U8 F6 t8 X! H: D5 ?; _3 b/ Z3 S6 w) E! x
set oscillation 0

! b! v+ x, D; i, @
8 z3 N3 E! G; L6 W- B$ ~set rand-dynamic 0
7 V, [% r3 f6 n
end
+ \# T/ z4 N5 @9 z- O1 ^( }2 F
3 D. O* N" J/ q& Y' {+ R' G  uto setup-turtles   V- {* \" D* x
set shape "person"5 y' v3 i' S# w# C
setxy random-xcor random-ycor& M0 R) }7 e( v5 l( @
set trade-record-one []" \/ I1 x5 w6 _6 t1 R/ B

) }4 z7 K% r; B4 c) Qset trade-record-all n-values people [(list (? + 1) 0 0)]
6 K1 m1 J- {& Z! p* i7 Z( ~
! d( O1 E' t7 c# r( C
set trade-record-current []0 x! H* h7 _' n# W; l& b: r
set credibility-receive []
% G% n) D! q3 K  a, _set local-reputation 0.5/ a3 ^5 L& c# [2 a& W
set neighbor-total 0+ u# o7 {8 \8 A# A, J
set trade-times-total 0. I& T% S- v; h4 e: B! X& Y* b1 s8 u
set trade-money-total 0
. ?8 p% [  z% F9 A# _4 C/ r8 Kset customer nobody
9 H4 @7 X& e! \" E  mset credibility-all n-values people [creat-credibility]5 Y5 X) G6 ^( v  R
set credibility n-values people [-1]
$ X4 V5 j9 ?7 ^get-color
' ^4 o3 j) d* a; n8 g1 e% E
# J5 I: ]5 t9 }2 U$ [/ F
end
: u5 u7 O1 s' x: i+ I' N1 q; y) e" k7 N
to-report creat-credibility3 X9 V; d6 |" Q+ Q' ]* F
report n-values people [0.5]4 E; z, W+ G* J9 y  Z* k
end
/ U5 e3 M' z- a; h9 X7 s: m
: Y! p/ a1 q6 S% ?' hto setup-plots
- l2 V  \2 i, W2 `, C+ d. P1 D% g. |3 ~) w& C7 w( ]; X0 s6 g  v
set xmax 30
5 w# V, c# Q# u. n5 e
# l! M( c6 s8 ~% K# l) k" o# \9 S
set ymax 1.0

6 H; \* ~' d. T. i; V" B4 X
& a2 y) {% K  n* E' }clear-all-plots
( h8 F9 p; \* F, H
* ?. y# m6 Q+ K2 w& L( i
setup-plot1

/ ]+ {+ N) q" B/ e. l! Q! ]2 e+ D
, a7 k; F! ?7 q; T/ G0 n# i4 Ssetup-plot2

5 i6 F) o* h. ^* U! s
# n" n) S9 `( I0 s* Z- h% lsetup-plot3

" o* d# n. j" ~. l9 l' l+ pend# I' L1 ~* s2 Q, j
5 e# k' p, e: f3 |, J) x' _! v
;;run time procedures
  P' v; ]4 v0 d* {& p) c- d; D  p: w0 d$ G! w6 z
to go  W* M' U1 q% H& J. T6 A" h

( l# J+ o8 j! Sask turtles [do-business]

) }* N0 q5 y" Y7 g( D  Send6 p( e4 R5 D8 a" h. Y) D7 `2 c$ l$ |+ E
. b4 }5 D2 m  n- `$ M
to do-business
  J  g% V3 J# z1 @4 q4 d1 C6 G
, ~# _$ M0 s$ Z

8 {! x2 {8 U# O" d; p2 x  \rt random 360
0 @: X% e/ f. ^- Y5 j" v

# H! E' ]: h4 ?$ E' Ufd 1
/ ~# ]  V- [( [, l

2 m6 t* G8 d( J" d+ L+ Difelse(other turtles-here != nobody)[
0 P/ k. P6 x! i5 }8 c
" n1 f7 Y( A+ }
set customer one-of other turtles-here
: |$ Q: \1 w( R) z/ X, G
* t  H8 _, w* B
;; set [customer] of customer myself
. }/ r; @6 S8 S' `% O& C; k

6 t; a0 p; }) ^* r' Oset [trade-record-one] of self item (([who] of customer) - 1)5 m4 \' x, ~( b
[trade-record-all]of self* E# D' d) {1 }. c/ }+ a( s
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
- a) S$ q$ ^6 X9 g& e! P9 S2 \0 f
' U7 f2 V3 v$ e
set [trade-record-one] of customer item (([who] of self) - 1)
: t5 q: R. u( C( L" }' v[trade-record-all]of customer
  r4 v# v) g$ s  ?' t  U

7 [8 c' c" Z- R. l5 v  e: iset [trade-record-one-len] of self length [trade-record-one] of self
( M) M1 x& J! O6 Q

8 d9 Z8 f7 M3 w' Z' M! x8 m+ v! hset trade-record-current( list (timer) (random money-upper-limit))
) H& D1 H2 R  B! ~# O9 k
% K. W5 Q+ E# B) e( c
ask self [do-trust]
8 m! G# U' Q4 D) a3 K4 n; ?;;
先求ij的信任度
: R5 B( w  n& c) U4 ?4 i
$ h( g' i  n$ W7 P) B; f( D; Dif ([trust-ok] of self)! C3 D1 m" c2 [. r$ L
;;
根据ij的信任度来决定是否与j进行交易[
( B0 q$ @# Z: a8 }5 task customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself2 t' O( c( I6 ^$ v
8 \, Q( g2 i: V5 G. p* g
[

' E% ]4 s& j" E- N4 w
) \9 _; [0 y; x3 gdo-trade
8 O) F1 M; X9 h- `
- u. Q" }8 \$ C; s9 B* Z, y
update-credibility-ijl
4 G; s  B. b( ?9 M! o8 ^+ q9 L

  ]- C7 n* X) J  M7 G% d  f! @( nupdate-credibility-list1 I8 L' \  }" d0 c2 M

5 {) F! S6 g( a) H; z% S/ g6 z- `/ u9 A" o; @4 b  U9 x
update-global-reputation-list

5 E" L; Z1 _( m7 Y0 s9 R& u+ y% X9 A4 P# X9 k+ l
poll-class

% J0 e9 ]  s4 K% y; O2 z9 W, C  C' L3 M  H# T
get-color
- @2 V2 p/ }8 s8 T6 ~& S  Q
  }* _7 u! K# k3 j$ }  y
]]
$ }6 @/ L; L( n4 _6 T% O3 u0 V$ h+ j5 g1 n( F( H' h2 t
;;
如果所得的信任度满足条件,则进行交易
! A0 d: ?; u' C6 K/ e0 [
  H0 p6 ]% s4 q% l6 P" n8 _[
7 k  O) U$ b- X

2 W3 }( q0 [$ V' f9 @6 {1 Rrt random 360
  I4 v- O0 B; O1 Z

& W+ E" d' o$ w1 w# y) [" E  F" ]/ rfd 1

9 ~% p9 d5 L; V& W  \& z0 Z6 t
]
/ ?* {3 y0 v* m0 V" {; ?& [

' f1 F( |6 }* B+ A3 R+ Lend
" m9 S. P# [$ Q# Z1 ~% S$ U
- z% w- Y& w1 [7 g! q
to do-trust
# s  M' |2 y0 t0 F- L6 m& U" Wset trust-ok False% x6 s7 `. {+ x9 ?, V- J1 h# ~% L
% A" G. j0 x3 x- n& ~
9 P4 y( ~) @! e/ y& X! O
let max-trade-times 0, Z& f3 p, n- \8 d9 g9 W7 {1 d8 e
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]. e. \7 Q. m& b: e8 @
let max-trade-money 07 I7 s1 V& T0 h8 k5 H+ M2 c4 R& v
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]# }8 ^8 q4 X4 y8 a
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
8 G' t& m! y+ g0 }
" h1 J" e1 v7 M. a# i; t% e

- {! f' g$ H0 u% a- z0 Gget-global-proportion
! f  a) Y5 D# jlet trust-value
0 ~  A, z$ v9 D; Flocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
$ |9 P( V" O0 y; M3 P3 x, N0 i- n( z
if(trust-value > trade-trust-value)
/ K: h7 z# n6 z: |[set trust-ok true]" \% k4 j( h8 l2 J
end
' h7 h9 V* B3 o% X% y) M% J
: Z+ s, s/ m" k/ mto get-global-proportion
, X4 q! t! S! U: I1 T: v8 }) |7 Oifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)4 _8 q; a! S% u& ^, U9 p% {9 I8 W  s
[set global-proportion 0]
; f" ^/ [* ~3 p0 b' M[let i 05 s$ d; R0 n& m6 s2 K9 h$ {5 N% p
let sum-money 0
. o1 D! ~# t4 k- z! h  G% wwhile[ i < people]
2 i/ ~( U) o* j7 G2 o[
4 w6 x/ A; P% H* V3 G- [+ D. {if( length (item i: _  n/ y" r4 T
[trade-record-all] of customer) > 3 )
. \) a( w: g6 c2 I
[
7 l. ^9 s: Z0 d3 u/ ^set sum-money (sum-money + item 2(item i [trade-record-all] of myself)), D( A( V8 K" @  G
]
! S/ E0 @0 O- a9 E; r- `]2 f9 h7 Z) A. Y
let j 0* b5 t( l7 N" Q  A- z  |$ _( @" H
let note 0
2 I& ~* a. e  xwhile[ j < people]
6 T& P: r: J8 i, B[6 [1 X5 Y% f7 z- {# I" h3 n
if( length (item i
9 O- O7 k/ p4 P% u5 l[trade-record-all] of customer) > 3 )
- y' `# U+ }* I+ w( h+ e) Q
[
- ~; h0 u- c8 W7 n) E! e& fifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)5 d/ T4 p0 X+ U) b" C
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]$ @& W) C) C0 O
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]5 K6 t( r% `8 N  K$ Y: A8 L8 o( c1 {
]6 h$ ?2 d: T0 Y
]. V% r1 i, K1 v1 a" g6 O8 n
set global-proportion note& Y6 L' ]3 }; _# u# z
]
( M. b# r: h: K$ M! W( M8 M, N5 [end
+ }5 r" K5 n: N* C& I+ b' {# o' P5 }1 L/ ~
to do-trade
9 \0 @$ C7 i0 u6 y9 I0 N;;
这个过程实际上是给双方作出评价的过程
4 N) ~: b, M8 p( W4 q$ U& {set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
' `$ V1 G$ |% X1 y9 q: {set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
9 [& k# J6 ?: z9 D  X* S8 gset trade-record-current lput(timer) trade-record-current
# }6 f. L  x8 X2 E% B* P;;
评价时间& A) D- J- \% P$ Q, M6 z$ y
ask myself [
& y/ U4 E, d. u% O5 ^update-local-reputation
: A/ u, j; [' n9 a4 Xset trade-record-current lput([local-reputation] of myself) trade-record-current( X  n% a; V/ f4 T
]( {3 j" V! G/ J5 `6 v
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself. }- y1 E0 [( R/ y6 u; `; K
;;
将此次交易的记录加入到trade-record-one# v1 K5 d% y- t$ D& G7 N
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)& ?* z: m) r) C5 P" Q
let note (item 2 trade-record-current )
- r( D3 |/ b' F7 r7 tset trade-record-current' P5 q; e# s% @/ c% F+ ?  d
(replace-item 2 trade-record-current (item 3 trade-record-current))
0 @; K; b) r- X9 V' M. p
set trade-record-current& l& S3 q* ]: q, I8 G
(replace-item 3 trade-record-current note)
6 e/ |  H3 s' L9 t, @# c; @
/ e  V! `; Z1 n3 w3 i. l
0 A/ G2 M; |+ s% h
ask customer [9 k. C$ t  v$ ^4 v/ j% z& M
update-local-reputation" r- N: t' P. |5 }# C* h$ [
set trade-record-current
- @, e, I4 I$ h* t! f1 G(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

" M* w) s  T# f, M+ V& r  P7 k]
2 S4 B, S5 K* {3 J2 ]9 ^' {# a
9 m  v% B' b7 P
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! x% B0 f7 e1 \3 \' v, O# i+ S
6 v0 \7 ]9 p, f& x& P, z
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))6 }+ |% ~; p7 i' u* k* |& _/ j
;;
将此次交易的记录加入到customertrade-record-all  e) N9 A9 Z. h$ N( Y
end" ~% O8 e; Y" D+ G2 g) G3 h

9 H: f  z2 |$ `& Z) Q) Q" jto update-local-reputation
$ C9 ^5 g4 L% p- |8 R2 mset [trade-record-one-len] of myself length [trade-record-one] of myself4 L6 [6 N& w, e8 [) U; _
6 S- H  o- G2 d( {4 I; {% t

% u* h1 j% D4 b0 |) w;;if [trade-record-one-len] of myself > 3

# c+ t4 d+ X( }, lupdate-neighbor-total& }  i" N" b8 w! s$ [. Z% V3 ]
;;
更新邻居节点的数目,在此进行. b, A* Q8 J8 D, H
let i 3
$ o% @; b; U" e" `5 K5 V+ ulet sum-time 0& r# s# f  i) n* S) ?* ?% K) e
while[i < [trade-record-one-len] of myself]
/ G) c# N; u9 v* o+ N9 ~, u[
5 X  U0 ]& U8 `3 Gset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )3 p( [' U3 Y1 p8 o
set i
, B. V3 _  p2 J& X! J( i + 1)

. Q" e: K6 c: u$ n' D! @2 V0 X]
! j1 Y/ r; n! C2 H5 m" Tlet j 3
6 A3 P% c- q& ]/ ^2 dlet sum-money 0
3 z  \; g9 v. Twhile[j < [trade-record-one-len] of myself]
; F( z" y* X& e8 `[1 x( d7 ^0 }" o
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)/ l# v& E2 B: B
set j4 H0 c. X% I* z- F; }/ T  L- r+ e
( j + 1)

& e# p2 ?2 r8 v0 a0 i+ X]
6 |7 x! [# ]# F! I6 O0 _- blet k 3
* F5 p' s: r0 [! X& ?/ Llet power 0
1 u# s5 l) i- b- Qlet local 0, `5 B5 }/ o# I; S. N
while [k <[trade-record-one-len] of myself]4 }8 X0 m+ {* X( W+ ?
[
# Z  a$ f6 p0 H: E3 l4 I2 Yset 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) & N' m9 G7 M, a
set k (k + 1)
" Q! B7 q* @1 W$ I& m+ }- ?]& K, x: H" P# G2 B/ z" N
set [local-reputation] of myself (local); o, p, M: _$ r
end
6 @6 m9 Q9 d* |4 A- `" V1 g" D5 t5 s7 _
to update-neighbor-total
. R8 L' C3 u! P2 u: S. q0 q3 g5 G3 j" F# E( P
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
# e6 g! w( A' {
+ P9 S8 e: y# m# n

# C4 n* ?5 O. G/ Vend
8 B: u* C! Z: A) e6 z5 f2 k# `2 i: W) a+ D1 M# V  X# Q6 j
to update-credibility-ijl + _& X- E+ s8 N- x% y4 L; W

+ Q; m# Y& X7 I3 m;;
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。
7 O/ {# @  _, l* n% N( {4 Xlet l 0" e* T, |3 H* H- E
while[ l < people ]
- t: x6 I/ J4 S3 G;;
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7 `4 P% i# v+ O$ a, i4 |7 ?
[$ x  F' f3 t8 K0 @! X' J
let trade-record-one-j-l-len length item l ([trade-record-all] of customer); O7 Z' l: F, G) m/ E
if (trade-record-one-j-l-len > 3)
9 K9 A; s! G  d' u% R[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
8 z8 W' Q# g! c* Alet i 3" K2 O8 r( J9 P: {* |# a0 ]# i; ?6 B
let sum-time 0
, m1 [7 G$ y$ j* Fwhile[i < trade-record-one-len]
1 b6 B" h( k5 j  E[
1 c$ _) t+ m2 O3 Rset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )" ~( `, R& O. V* G+ Q+ v% @& A
set i
. |7 K, P( N' ]" V- X& D, Y( i + 1)
2 b& p0 B, x( L0 y
]
! ?. A+ Q2 d: @3 T; q2 G1 t" Hlet credibility-i-j-l 0
+ Y1 v6 H+ I3 _+ c- r1 k;;i
评价(jjl的评价)
" @% A) s' \, n7 xlet j 3
2 ?2 Z0 K9 h% c7 _* b$ _8 v0 x8 u* D6 olet k 4* b& ~( F! x$ m% G4 ]) q7 N7 ?
while[j < trade-record-one-len]& ^$ t; ?$ V# g  v6 Z
[; A7 v) L" w5 e+ D$ N" [% S
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) J' R  D2 p4 n. D7 T
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)
3 ]) \2 J9 T8 [9 zset j' c$ |/ y, |8 G
( j + 1)
. `9 O: r* l( E
]9 N+ [3 W; q! \/ H0 O# P5 i% J
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 ))' l5 K4 F7 U, o. k' q% _. }

& Y  w+ @6 `$ [- w# N6 @8 s

  u9 O8 W  g- r+ klet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
6 ?3 j2 \  z, y+ A# J;;
及时更新il的评价质量的评价
5 ]! M4 C9 _# u& N; }1 R/ ^, Eset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
4 m# E+ Y, _8 K2 _7 p6 K" n  u- mset l (l + 1)
, N. `9 N8 z8 J5 A+ l* U]' Y) H% I+ W# D! V
end
; T& b/ _; n9 v+ T( f- p( A$ G2 B6 c' `3 ?2 \! `8 Y9 N: K, y& z
to update-credibility-list
1 {+ e) h( e- o0 _9 W5 Nlet i 0
5 l+ `" d! U6 V. |: r8 ^while[i < people]
6 i4 c; E& F& M4 B[
$ k, X# i' O0 m6 L) l% i6 blet j 02 N- R. O" j% t$ s. ], ~
let note 0- F, `$ C. X& J
let k 00 f% r2 Z# Y' L1 m% H; \( N1 r) g
;;
计作出过评价的邻居节点的数目/ j3 X& w1 q) E! ~, n/ i
while[j < people]
: F( V$ i" C/ G[
3 L+ d9 S6 Z2 O6 E2 B& S3 y$ cif (item j( [credibility] of turtle (i + 1)) != -1)
( o7 D2 C" A/ G;;
判断是否给本turtle的评价质量做出过评价的节点
$ k6 h! P2 _0 b0 D) `+ [[set note (note + item j ([credibility]of turtle (i + 1)))
1 \7 K) f! q" z( c/ ], I;;*(exp (-(people - 2)))/(people - 2))]
# w! b2 O' l) N1 W6 h
set k (k + 1); v+ t: j  E# _1 j' M5 p
]
1 k8 e, t5 V, P$ C  k3 F& Pset j (j + 1)1 i( w5 ^: l# m
]
2 e9 k  c0 i  d3 Q( uset note (note *(exp (- (1 / k)))/ k)# h# v! [9 G" [1 T
set credibility-list (replace-item i credibility-list note); R: i9 N  p4 |; }- w, T
set i (i + 1)
% |+ J. l+ U$ j; L]' Z+ {8 Q; P* ]- D% {  d8 |
end# {% ?& |/ {' B  o

  n0 t! n6 Y! fto update-global-reputation-list! U" ]' P; H6 R3 }, r
let j 0
7 W: l3 p+ s- N" o! hwhile[j < people]1 O2 Q! G1 m% Z6 R# k( h
[, v( o( {- z. H9 K5 v- @7 R/ [
let new 0
  J. P+ ?! j1 Z, l" E; c: D;;
暂存新的一个全局声誉
' e3 T+ K& l; ^& A. B2 e$ Elet i 01 o; h& i5 r0 e" U; e1 F
let sum-money 0
$ r$ s# z+ y1 ?5 Mlet credibility-money 0' N6 c* [* _5 N' a4 }: W" O
while [i < people]; \% |; x) i, K- \5 o( z0 R
[# N6 x: R9 [* x) K. z( y
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
: Y9 h5 c6 C3 W3 e5 eset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) K: B$ n% b+ O' B6 q" B
set i (i + 1)8 J3 V) v5 @( {) v$ y9 P& C' Y4 o. j
]/ f9 N/ H% `  o1 W
let k 0
- J7 r. K% Y" I7 M" V. Dlet new1 0
/ t+ t. f. O5 O4 g& Uwhile [k < people]
$ M& R3 e5 F( f! r[
+ f5 [" s: N. o/ o' t9 ^; Qset 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)
3 U0 g" a# C7 x* S8 R8 Tset k (k + 1)+ J: a( H3 [' p7 t4 V( Z. i
]
0 M- a- W! I, i  [4 J5 q( Sset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 4 v; Z8 a8 K5 a4 I; w
set global-reputation-list (replace-item j global-reputation-list new)
6 r7 B% Z9 V0 |' ]+ N( o. Z7 lset j (j + 1)
( J: B3 }! |( x]7 l4 i( h" \+ Q" a2 T
end- w1 }6 ?8 ?# i5 c

( O4 L! a, p  ?3 A: m4 S7 \  f, H1 O8 K9 g+ {" q6 J; p
2 Y- {) M  b" ~0 c, L
to get-color0 f) {+ R% U, f: l( d
# E3 a/ p8 @: H- c& u. d, [
set color blue

3 x; u1 k% t( E) @1 a1 O& A# e$ e3 ?end
& f- b+ M% ?; [7 k+ C/ h3 F( ^% @1 ]6 {( B* J# {1 I
to poll-class
3 }/ [% }, @! o3 d- Cend  p* C6 A# u7 g6 Z) J" R

+ M& I' q4 _2 m. V7 kto setup-plot13 p& O! W5 K! J6 u

" Y( i8 j9 b* J5 B9 ?set-current-plot "Trends-of-Local-reputation"
5 f/ `/ w% A* o% S* H

# b3 F- |# q' N  U2 U4 Kset-plot-x-range 0 xmax
: o7 K# k: W: ?/ f6 @5 N) z
. C* `$ p  b; }& T9 B" k3 p
set-plot-y-range 0.0 ymax

6 Y/ S) x; Z' l1 v: yend
% L/ A5 _1 b( \5 q; S0 s8 Q, W2 h; W& N2 {8 \+ N2 ?
to setup-plot2
) h6 V. w5 l, `6 J
& H1 z  s7 Z5 d& \. E0 ~set-current-plot "Trends-of-global-reputation"
( I3 C4 d3 L/ U( ^$ ], h
1 f4 h- o9 }, ?1 I
set-plot-x-range 0 xmax
+ j$ v" U" |: r4 x5 O$ u; M
6 h! O8 y* a# z& ?( ^1 z
set-plot-y-range 0.0 ymax
' v# ]9 v6 P6 ]7 Z
end- W' U. ^3 @8 W

2 ]& a6 e6 r, q, D. `8 cto setup-plot3
: ?" M1 n5 T/ @* V3 Z) {6 Z/ [
* V) ]% I' n9 V* f4 bset-current-plot "Trends-of-credibility"
! l! \8 a# o! Y6 v, |6 R( H
0 l- p& w8 R) `9 A. A
set-plot-x-range 0 xmax
2 D2 k7 `6 [# u$ {6 p8 @

: s) I- j: q0 oset-plot-y-range 0.0 ymax

  A  Z1 V- A$ K* ^9 x# Aend
7 W& U1 R9 b- H  ^( {' N
% A* h; S1 k+ b4 Vto do-plots" h: B1 P' k3 a) j) i2 I
set-current-plot "Trends-of-Local-reputation"
! t+ O- t4 L7 Fset-current-plot-pen "Honest service"6 q' t6 K, b) v0 k+ F
end# C2 e- L' z: M1 O$ \
" P& [3 i+ T  w: g2 N! u  r" K
[ 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.
; o/ C0 N/ \  L+ {! G: a
+ H" D% Z4 B, v! l# I6 E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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