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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:' {$ {# F( r1 T$ z% }+ p9 v( G/ \
to do-business
3 ]) y. B! ~( w5 p& u2 c# a' l rt random 360
' m; w% _5 I' |) H' {  ~- w fd 1
, z1 _/ E% E# {5 v5 z# q. k ifelse(other turtles-here != nobody)[
! A1 R0 H* f  C% x% K   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 g: E% h5 S# `2 K& z! L   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    . B: W" q5 H+ X
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer' |; n5 R# i: E# L. s
   set [trade-record-one-len] of self length [trade-record-one] of self
) g( U( c  i5 t' s5 n. M   set trade-record-current( list (timer) (random money-upper-limit))/ q; e: Z4 ~* @

, z3 R! y7 t2 q* e! t& L1 \5 `问题的提示如下:
; o: m+ ?2 h% Z" N- s' N2 ~
" _$ e8 m9 X3 }. p5 {0 i! B- yerror while turtle 50 running OF in procedure DO-BUSINESS
2 x- t+ s. b2 y; X2 z4 T- P+ f  called by procedure GO% n5 g/ P9 r! P
OF expected input to be a turtle agentset or turtle but got NOBODY instead.& Y6 a5 b7 v$ s- u
(halted running of go)
; w2 n" S9 k: c1 C) {
$ \: L) K4 N  P7 A* M& J/ _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~~
, _* \6 j0 W; {1 ^4 X& X* ?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6 K/ p) J8 Z8 W4 y0 ]4 G: W
globals[
+ M0 I& c, M5 S# E7 kxmax
, b2 @/ ^2 e- o& T* K  `ymax
/ E9 X8 K6 o& A' N  y/ Cglobal-reputation-list# _/ B, a# s" n$ u$ D# K% ~" x
8 `  V& Z$ R6 a* V+ t5 A" z
;;
每一个turtle的全局声誉都存在此LIST% S+ u( V) R. Y/ q# X/ l( Z7 ~
credibility-list8 ^5 P' U) Q4 \! x6 w- e
;;
每一个turtle的评价可信度
1 P) Y+ i/ j- a& z2 B5 xhonest-service% n' z0 w- ]0 ]* i( m
unhonest-service
; P, n" \8 b5 e' Roscillation
* i5 o, r) q1 T6 X" Urand-dynamic
7 L* B& T- ~. H; ^: I5 w]
& d, d  S# D3 ], \* k% V4 C2 ^+ Z: T4 k* [! n
turtles-own[
$ ^9 ?" \! u  dtrade-record-all4 A" q0 s9 j" l/ g
;;a list of lists,
trade-record-one组成
/ `4 ~" T3 H1 ?trade-record-one, M* ^+ J# ?9 ^
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录& t% a/ `5 u- O
/ X" j) N5 w( C- h: _
;;[
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]]
8 Z3 c; f( y& u9 etrade-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]
2 w. _% y0 l* o' B- r: zcredibility-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; f: Z2 m. i4 c  J) y# V3 I2 I
neighbor-total
2 z" f6 [3 l- Z6 B5 s- m;;
记录该turtle的邻居节点的数目# U2 D3 C- m- e% e7 U
trade-time
4 O3 D( V4 N7 z& U;;
当前发生交易的turtle的交易时间
; M' k; Y' C4 s: u/ Lappraise-give
" C( E" [+ m3 c1 n" k# [;;
当前发生交易时给出的评价
' o9 g) l* W- v" e4 @appraise-receive3 d4 u  c" v* E7 H# p
;;
当前发生交易时收到的评价% y4 X+ K7 X0 E  _9 I, E
appraise-time0 P2 f! X; R3 J: f5 F4 Q) o
;;
当前发生交易时的评价时间
8 O" @* A, N5 K/ |7 D% u9 glocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
; o) |. L  m8 h1 _trade-times-total
' L+ V. j4 W4 a9 }2 J4 y+ I* W;;
与当前turtle的交易总次数4 i- O! }+ ^" W! O5 V
trade-money-total9 x; h5 m4 z- h
;;
与当前turtle的交易总金额, h8 A6 v( G2 M/ _; F
local-reputation
% _6 Q; j% q: n5 j) d0 C! F( R% ?global-reputation" f+ r$ l0 P, L3 l4 F
credibility: r. J- I/ Y) R& [( b6 y
;;
评价可信度,每次交易后都需要更新$ d( V5 x7 f5 Q( |0 V# C/ y
credibility-all
; t  _! J4 N5 I- U: f3 D;;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2 P7 I4 A. B4 V$ h) k5 e* c$ d; O
8 m! D$ S" [" m& M8 J+ w
;;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0.56 K0 m3 Z  I+ u" H
credibility-one5 V) L1 N, k) l" t9 L, X# z3 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
- p, B2 j* _$ `6 W% y! Tglobal-proportion
) g3 n! K& S9 l0 Icustomer
9 _) B6 y- ^8 l$ A5 f2 [- Z# A8 M+ qcustomer-no! _% |9 M& e# E$ _( R
trust-ok( N: x6 |" h- Z( h* t" N
trade-record-one-len;;trade-record-one的长度
/ O, @! d8 W8 c4 M]
& a/ [$ j$ O( s+ B6 x0 x$ t4 p2 m7 @
;;setup procedure$ w7 P+ {! v+ i( i1 T. f
+ Y6 T( c  B0 m$ d4 K+ h6 }
to setup
! |' b: ?+ B1 a$ E/ G6 c# ?* D6 a8 `6 \6 l" E$ ^
ca

5 m! Q3 ]3 F/ P; j! i6 o8 _7 p9 O# X% v& B6 L  _( T' m% G
initialize-settings
6 |9 z& K, J5 o

8 N, G: X* {: Z1 \crt people [setup-turtles]

; g& K: G: m$ {2 h# O2 W
* O: n6 v8 x8 C( T% i! kreset-timer
' m6 o( G8 f3 j' a

& q  L# U# v" d% l6 O9 u6 X! C4 Z1 fpoll-class

  ]% D" X/ k" p/ q8 O' A
2 Z# ]# Q/ {: f2 u/ Y% Y/ `7 k/ J5 [setup-plots
. e- F/ L7 ]9 A. |" F' {( I

. E' z7 @2 w# Wdo-plots
. ~# z" b8 \- z- g: d* t  p
end$ r3 F  N9 I2 l: [
' U% X0 r9 z5 ~( }
to initialize-settings9 N$ d) [1 k  @

. s( b: x: |6 e2 x$ S( @set global-reputation-list []
1 w5 z% B7 A8 Z5 ^
5 j5 p. ?4 Z# }
set credibility-list n-values people [0.5]
! T% T$ Q7 m0 k5 i8 K
, ^' J6 A0 c. w, n; |' s
set honest-service 0
+ ^" Q4 O' v; o
% Y( P% [4 x( `6 w' }+ G
set unhonest-service 0
- I8 d% ~) X- u+ ]

) L8 ~3 Y) g" N: o. Uset oscillation 0
1 D  C5 w/ z- q+ a; C

- i1 G& B) [2 i$ h) m% }3 Wset rand-dynamic 0

, ~0 A/ j& l! ^1 kend
+ o' g# p4 ]: r) S" n
1 j; S% l, Z) eto setup-turtles & r! M0 Y5 w$ R8 v) \9 R& A  W3 v/ ]$ R
set shape "person"" }! x& p8 ^) Y. ~# _+ ~( N- Q  h: z
setxy random-xcor random-ycor2 u$ I) n4 T9 ]- ]* Y# Z* @
set trade-record-one []
- c( H7 f% H! H0 y+ v  i
9 x3 l6 B# @2 P3 c  A7 z7 ?9 |: Y
set trade-record-all n-values people [(list (? + 1) 0 0)] ! p" z5 [3 G( F
9 t$ o( ^; A9 |* t- D( |; ^7 O
set trade-record-current []
) V; Z% z9 A8 f# p2 x0 [; tset credibility-receive [], R; q9 u3 [& i: d; Z; n7 H
set local-reputation 0.5: O8 d3 E  v, T( Y9 H/ t! t
set neighbor-total 0; E3 q# T; J- i3 l1 T6 q# B
set trade-times-total 0
4 E% M1 p% s; T& O! I6 @, E5 d& Pset trade-money-total 0' w  i0 w- ~6 ^, b' z1 @. w7 ?
set customer nobody
, b7 ]6 G. S, Wset credibility-all n-values people [creat-credibility]
, o* u, d  R( Q3 j( Vset credibility n-values people [-1]
4 B' x; V5 `$ U/ c( tget-color) l/ t) _8 g0 B# K

( _/ y9 }! v- e1 Yend( V7 X' C1 s' B. h* C& U

$ e1 V& C( b5 Zto-report creat-credibility
, U$ e4 T  Y, u1 v9 w6 f$ wreport n-values people [0.5]4 L2 Z* ~. v$ ?" ?8 l
end
% S; z! @6 h! N# b9 m( x0 V" `8 E! {# @' |7 d  y
to setup-plots( }3 T9 ~% m# s. A  g) U

$ P$ ^# f0 V$ ^+ A+ q8 Eset xmax 30
: e. U4 a( c( X
# v5 J2 b* Z; `
set ymax 1.0

3 T3 K2 x& f0 T) ^$ N( i$ n, O
6 b4 g" U+ o% }( Z# z& tclear-all-plots

8 l/ U& q  p$ g0 e! d* }! L: V2 T* v
setup-plot1

1 F2 b' o9 Z3 f5 E+ b9 I
6 Y& W3 L4 `5 p7 ^( u/ l/ zsetup-plot2
2 ~2 k: k6 h  G4 e  Q
6 U& n+ e- \, Y/ V* `; }5 P
setup-plot3
3 e5 v5 C) \9 i- p. U
end6 t4 f$ i* y% R1 i- N, i

1 B" j7 M0 L) U8 r7 g* I;;run time procedures
5 ~1 b# r1 }+ B/ j% V0 c( z
) p) f$ h  p. a+ O# ]1 @5 Z  Oto go
2 I& |* M$ Y4 O
- c& T  N9 Z3 Y3 b$ R/ q; O, Lask turtles [do-business]
+ @! _1 I4 m) b1 v$ ~: Z7 v  J/ }
end
. \/ L  |% n: I9 S( K' ]
" o7 l4 C; E9 Y$ x8 rto do-business   Z2 x9 U3 u1 J' B. ]7 N

9 P3 a6 ]" G8 c! m7 L4 k( `- S9 F1 D! c
rt random 360
. q/ }  Q; E: f, O" A  c! ?

$ ?' [8 {) v" D; lfd 1
* l" a- i( y; D  u* O7 T

# n: V; H2 H) tifelse(other turtles-here != nobody)[
5 b' S2 w/ u3 P% j. y

% W. R% j8 X  c  e# O  cset customer one-of other turtles-here

$ G7 X6 ~$ e% ^
7 C& E2 m  s; ^9 |) v( z;; set [customer] of customer myself

0 X* ~. ~2 H3 v8 k4 p- O
1 m; n% q. ~4 Y4 W0 Hset [trade-record-one] of self item (([who] of customer) - 1)7 I& W4 ]) t& ^( Z
[trade-record-all]of self
) M7 t( {) Z- r7 Q% T;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

5 n% K3 x7 d$ D5 ^% v  s! ?/ ^  i" s# K+ ^8 T
set [trade-record-one] of customer item (([who] of self) - 1)! B5 R" Z; }* n0 I
[trade-record-all]of customer

, F4 k0 J3 N2 w) L3 F
' X( g; x. _# |; `; A- Rset [trade-record-one-len] of self length [trade-record-one] of self
5 `/ u7 E  L5 Q

/ V3 I6 l, x" l+ [" j+ Fset trade-record-current( list (timer) (random money-upper-limit))

4 p' S) M" h1 Y, e+ f  }
3 L+ B4 C" J2 {9 W6 B  ^ask self [do-trust]4 r) s4 E! j; |* C9 I; ?+ h& Y
;;
先求ij的信任度! ~, M3 J7 a9 T) B! i8 Z4 E

; Y( x0 F" E/ ], [if ([trust-ok] of self)
2 \5 Z$ i+ V; a: Y0 w8 `) X7 m- m;;
根据ij的信任度来决定是否与j进行交易[1 v( j2 G1 O9 m) i" n6 _
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself* P( r; [: J6 C# [2 Y" U6 M
4 W1 M7 s$ k" C7 T
[
' }' o! Z# u+ n& A/ A

, h9 T% M1 p% c8 D& a+ q8 ado-trade
7 q5 v3 p9 `( c# H
, Y( a% X& E- U; C' q" i
update-credibility-ijl
3 E. C! h9 K, S# y+ p. t1 m  g

4 \8 [% E6 T; S* r* E6 Z  ]+ Iupdate-credibility-list. v, Z& j% h7 x& k8 _5 I" {' ~+ W

0 q1 b: E* x& z! f  R7 y7 g$ {9 B9 N* v1 n0 B
update-global-reputation-list

/ ^8 L' V8 C$ p* S9 r( ~8 S9 v* `
poll-class
4 h0 e  L# ^$ C' y
" [8 S3 Z2 S" i0 S
get-color
# |& x( W/ h# P' F4 h. [

9 f3 t% j( v) F]]7 i! l, i) s7 h7 u( R

" D% A' S' g& L9 c% X" c8 v% a;;
如果所得的信任度满足条件,则进行交易
& Q- \, ]9 ^" `* c/ O/ F! H  U; s1 T
[

6 X" C# w- J; c
/ O5 E4 s, I0 Frt random 360

: @( I# Q+ j- U" C" x+ l- \
% B: j& H+ ?/ f$ u, ^fd 1

) H, b. M0 w6 ]7 y" }
. D, j3 m) y8 j+ @/ b]

2 K: r* ~2 {! d$ |" Y+ Y: K' u3 T3 s9 m
end

" [& m" ~! ^  C% R0 j8 E% H' \2 ?0 T3 s, W, V! b
to do-trust $ M9 K4 W! L0 s9 N, L
set trust-ok False
6 j$ P9 k  L, b3 P8 |6 @9 ^2 ]4 x$ D; j
2 T, w1 Z  Q* }# u) G+ d1 }/ ?
let max-trade-times 0; a  M( R( F5 l0 U/ X8 b; r" J
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]! s/ ]2 e5 ~9 u9 I
let max-trade-money 0
1 M$ ]+ [& A$ X6 V" x( Jforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
; G- y0 M9 c/ x! clet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))4 c6 a" T/ w* Q6 F
/ P8 B9 a5 |4 q) Q% w! a
( i- o9 I1 j/ W- F. x4 v7 d4 M0 d
get-global-proportion
% K' d/ P4 j8 a7 R  l" }let trust-value
+ ~+ `( [# A% j$ {+ Nlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
" v: Z& `7 |% A+ B5 Y5 I1 l# |
if(trust-value > trade-trust-value)
/ \3 z& u5 a8 W1 [[set trust-ok true]
% F7 A6 e4 A" D' fend
- p2 o8 u+ \! d4 X. ~6 r: T/ E& E: [: |% m: y# A1 E# L( O
to get-global-proportion) H$ Q& B9 p( Q5 h, V7 k& T
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
; v. p  B2 C5 D[set global-proportion 0]+ Z: X) D4 O8 V6 f* n. U: M! s
[let i 0
( a7 C5 X" j2 C$ u  Y) Vlet sum-money 0
* Q) a; o* |% V8 Kwhile[ i < people]
9 S$ u8 {& R. j) z3 R[
) g/ \5 I1 I1 w$ Bif( length (item i
$ Y+ _& t( `8 T% _$ C; D& [[trade-record-all] of customer) > 3 )

! d3 B# K: K6 M" k7 `& Z1 m[$ i9 ^7 l; C7 L, B4 v5 V& n
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))7 D+ a# x3 H9 }2 j' N. ?9 a
]
( v0 k- A0 l; p# U0 J' a]" m6 [$ B* T; t. f( g
let j 0
, i$ r- D/ i5 i) U) s( y3 V, ^: h8 elet note 0
$ J9 P7 T- s, U! V+ I/ awhile[ j < people]8 J/ |+ J" z  O* x1 e; u( M, D. g
[
/ D8 `; T$ Y8 pif( length (item i
7 l& T; a$ D) d2 r[trade-record-all] of customer) > 3 )

" |' g5 r# D+ l9 [# x5 m[
; x& ]* V( M' t  C/ Zifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)* `( G3 D$ i8 j; C- g4 W5 g  O
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# @$ V+ u: S& ^6 k# q: T[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
) y2 k4 f' x" C9 u( z% Y( w2 z" e]" i# r2 T- j* ?9 {
]; K$ o. p4 Q8 M; y
set global-proportion note' M5 T4 G( f- a7 u
]% b4 k* ^, |( N1 K0 c
end
' Z6 t! C% L* g, f5 x+ ~
2 ]6 I+ h5 W0 t6 R! D9 lto do-trade* E& _/ d" O; ?; k. e# D/ r; y5 g* C
;;
这个过程实际上是给双方作出评价的过程5 g$ S! w4 S1 C# _0 }' i
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价2 o0 z  a; J" t" P
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价' X1 Z# f+ I$ m& d% k) t3 G9 c
set trade-record-current lput(timer) trade-record-current+ D7 X+ W* g7 m' Y5 B. x
;;
评价时间. u: Z9 K0 }) t$ N& o+ V1 v
ask myself [* c! U7 X* }3 D$ D
update-local-reputation
% M6 [5 n7 @' N$ ~* K" F7 i5 {set trade-record-current lput([local-reputation] of myself) trade-record-current9 A6 D3 {8 X0 ?, F, `
]2 [# _! _9 v: r, O/ I
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
  \7 k& F! Q$ Y5 A  y% Q4 E;;
将此次交易的记录加入到trade-record-one
& D( w; e' }# k4 Gset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)" c1 f( V" ~" G
let note (item 2 trade-record-current )
; x. |1 ~& @0 y, u3 tset trade-record-current
* f! t# ]4 v- P! U3 U(replace-item 2 trade-record-current (item 3 trade-record-current))

: z+ B' H; q) ~2 d  d. l  E) Xset trade-record-current5 G, Q: X# o2 P; _3 m
(replace-item 3 trade-record-current note)6 ~) o, f9 v, {" V

3 n/ W/ A5 A. B$ Y# S* P
5 d/ {/ T" X% o2 X4 y( R2 @1 z" C
ask customer [
) B* d* a( H' ]; {update-local-reputation
4 T* k0 {, n6 I' \set trade-record-current4 ]0 ^* y! |9 |6 s! d
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
" V; N, m+ k3 S/ }0 q7 e
]6 {( K7 p- j( [% i( O2 z7 d+ B
1 @* F6 L3 h- R+ I) v

3 ?) {8 i) N8 h% c) fset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer  _, T) q  J3 {8 V

. J2 W0 S; A( U8 T2 Wset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
9 ^- L% _' t# g4 K1 b( x;;
将此次交易的记录加入到customertrade-record-all; ?* B( B% M2 r9 `6 [5 y' ?; g+ @: g
end
1 L: h1 }, g1 C- M4 N: v1 u2 N* X$ _# c
to update-local-reputation+ i9 s1 i! f; V, P3 e" E
set [trade-record-one-len] of myself length [trade-record-one] of myself
$ k8 C' _2 g: Q6 H9 V! ]2 V; U, j5 ~
/ z$ R6 t3 b3 K% _+ m! D; U' a
;;if [trade-record-one-len] of myself > 3
5 c( u3 |" n. z: W" Y) `" [1 Z
update-neighbor-total
/ ~5 }* D8 ^: {% G;;
更新邻居节点的数目,在此进行  P& a5 ?. P/ t7 z* s
let i 3
& E4 J- M$ E4 l, J0 v4 p- X, nlet sum-time 0
6 q( S9 k3 l$ d. J, }1 ewhile[i < [trade-record-one-len] of myself]
1 ~, p0 w) d  f" f. T3 H[
3 s4 f) U+ o" E/ r0 F+ F6 jset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )3 f# P, O' N/ ~  z$ l
set i
+ l# ?7 y/ W* l+ A( i + 1)

7 ^) B; k; a( R; S]
1 ]$ z  G+ B) P6 w8 E: R. p: ylet j 3& u4 [$ `$ B7 L+ K) |
let sum-money 08 f/ n( J2 d3 ]3 I& F
while[j < [trade-record-one-len] of myself]
/ r; J& h7 ~* A[$ t8 W' A1 x5 G9 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)1 i7 f$ e# N; F, O/ i0 t7 Y- |
set j; I, d1 ]5 T5 d2 y7 R! |0 T5 Z
( j + 1)
1 W5 V* N1 K$ S: C1 t
]3 Q. {( U- }4 {2 n# A; H0 u6 w+ k
let k 3
% r( D  n! ~* x0 s( e: |let power 0
' P' u) C1 D: Q8 M- S6 ulet local 0! X) Y) y: s% L& f4 w
while [k <[trade-record-one-len] of myself]
1 D; w  i# V+ v2 X: g' L( r  N6 L[! h* z8 j" o' s7 d  K
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)   g5 I) H* w' ~+ v0 n& ^! \) I
set k (k + 1)
/ ~9 P: v) h6 @! w. L1 h]  l: p/ h& k; I5 q9 i& P/ R
set [local-reputation] of myself (local)0 T9 W) o4 Z  r/ j
end. H1 Y( B* K( f) l& p9 F! T

3 ~6 j1 u4 k& |& eto update-neighbor-total
8 W3 J6 d- t/ P8 |! L  q+ N) C$ ]1 C% \4 {) S5 R
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]8 g$ W! ^" ^! s1 i- L! r1 s
# V7 b+ X! K, y
/ q" [9 q: U9 V/ z5 r% e
end
/ z( J  R( ^: B' s4 V+ o& @3 n, v0 L- `! s3 r  Q% P- g4 J4 Z
to update-credibility-ijl
5 `' [; g& ?& [" r& G" m* I( z; J. U' ?( _% G7 f+ I) z/ `
;;
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。) E3 \5 J0 m& o0 G: Y
let l 0
; R/ ]' {( L* s; d) y9 V! h$ g" Hwhile[ l < people ]4 G* y) {- v6 b# l( G2 K& T
;;
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
# g5 P7 ^0 r/ I& b& i/ k1 [[, ~; ^$ l% n- \  h( |" I
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
; A( F7 I) I& S" a9 {# iif (trade-record-one-j-l-len > 3)
" f( P& S4 v! B5 k& Q! l[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; S# c; g4 S9 {0 F, d( x- W
let i 3
& p' f8 t9 }! I+ T$ Flet sum-time 0
4 ?. S* m8 G) r: j3 Iwhile[i < trade-record-one-len]
& ]0 S) v7 J# n4 E7 W* T[4 }! @, }; T4 G9 S& G
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
3 C+ w/ c4 r+ I. I$ ?set i. m3 W( A7 I/ v
( i + 1)
" C' R. A+ H0 K8 H
]. @. `( {' N/ Z1 r: g
let credibility-i-j-l 0
+ o2 r. P* x$ H+ C5 a6 M;;i
评价(jjl的评价)# d9 s& O; d6 P
let j 3
9 p2 C; l1 \8 E$ qlet k 4+ O% ^/ O3 X6 d
while[j < trade-record-one-len]
, y9 h% A* I3 p7 x  l# P[! V+ h+ g) y9 q
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3 L0 E; W, z! M, ~+ ?
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). N" t" e- \' s$ k$ [
set j' W# I& `* h! Z: @
( j + 1)
' r% c% T/ e8 n! @% n9 ?: Y
]
- H5 F8 o- ^( [0 c7 O0 aset [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 ))
: H* J6 b1 i8 \6 @1 G; k2 P
2 b$ V% }+ s/ |, p6 ~0 R
4 C4 {- A8 q; [* B: n6 O, G- z
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
6 [8 |# @' h# n( ~" u;;
及时更新il的评价质量的评价
6 o6 I, z! [5 pset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
+ g/ {% E1 ^' Y; W6 O4 N! [set l (l + 1)
# H( C: Y8 R8 Q1 V3 y5 d' ]! y6 `]6 ]1 ^/ y1 X5 e( P4 n
end
0 t. j+ x" x% N7 m9 c. h1 Q) q. J) P# ?3 y: h+ d- X( ^6 f1 }( r! J
to update-credibility-list0 S9 y1 ~8 ?4 F) e; Z0 F
let i 0. g* }, {% v- Z; Q
while[i < people]/ x1 e+ H: u  d2 q! I+ H. B
[2 t% Y0 C  q. Y. l9 \3 S
let j 0
( N( z3 [. S# N5 e  O+ `let note 0
' X; S* w) U7 L% K2 k+ `let k 0& U- J( @8 U5 F) u+ [
;;
计作出过评价的邻居节点的数目
' n) y3 ]' f( _while[j < people]
% d+ t" G7 O  V1 i, ~[) J. z3 L8 [1 p; E
if (item j( [credibility] of turtle (i + 1)) != -1)  j/ f/ D" t$ u
;;
判断是否给本turtle的评价质量做出过评价的节点
% K& x. ?9 @4 S. N% E, S[set note (note + item j ([credibility]of turtle (i + 1))). ?8 |# L5 T8 x0 {* X
;;*(exp (-(people - 2)))/(people - 2))]

  F% t6 Y; m. \* n2 v4 a3 `set k (k + 1)9 r4 o# z7 G3 M0 t
]8 k* O( t: s8 b7 ^
set j (j + 1)# q& C- E: w5 T2 o$ J% D; \
], _3 `5 P0 D9 B( A) j
set note (note *(exp (- (1 / k)))/ k)( R( L- z, |/ u: t/ J
set credibility-list (replace-item i credibility-list note)
, x: z+ R+ A8 e: g; W* T$ R7 qset i (i + 1)+ M4 b7 {: N3 x' E9 U' N
]
' b. d9 S1 ]" d4 x4 J' I& _end! S/ r' P- x! X2 r8 t

. I4 w) ^* ^+ N3 Z6 vto update-global-reputation-list8 X* @- P; q) b! c; m1 m* N
let j 0- P0 Q, H$ {6 @2 ?8 R- v& d
while[j < people]: L7 Z2 `! T2 Q! G. r* |; ~$ C9 N9 a. Q
[
* o4 A/ T8 D5 Q) l8 ]# d0 J# }let new 0
4 ?2 Z6 ?$ Z! I0 T  C1 z. p" d5 H7 L;;
暂存新的一个全局声誉
3 i' G6 y2 {' Q5 zlet i 0
6 k1 F) k( s8 u! }8 \let sum-money 0
' _+ t3 h2 `% v7 D. A8 T+ c6 A; Vlet credibility-money 0
4 Y9 l5 S- G) B. t' vwhile [i < people]
7 A5 x7 _: k! \[
) m- X$ Q3 z- [8 }' F+ r6 n& pset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
& p) y( k( z5 a' U5 A% Dset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
' [: r, j; {# T  O) \set i (i + 1)! {. x% E) e! P! C( e7 w! j% ~
]
3 }' A% P7 I: f- Nlet k 0
: R. z1 @) O2 ulet new1 0
  ]7 A5 z( P2 K" r( Dwhile [k < people]3 M3 d0 K1 W& w1 |* G7 D  b* C  Z
[
+ |' O( i6 D' N* zset 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 K: q8 t+ I1 K* ]  Z2 W, }! bset k (k + 1)
* T7 O# E9 M1 m" z5 l2 s: ^]
- ~! @6 @/ }9 C3 G. }/ \' B) sset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) # v$ ]6 u/ @% M
set global-reputation-list (replace-item j global-reputation-list new)# }5 M( h) V; h7 g, ^& V
set j (j + 1)
5 _* x% p% ^7 E7 a/ O]
9 v: q, ~: C. tend2 I9 v- I" J% v: Z! K0 a

. H  f) R2 D* B; {! |
& C4 `( B3 I3 j) m. y! }
7 P: ^6 t) N- B( v2 `8 A5 Z8 g* ito get-color7 _& s) Z  [: f
2 w' s( n( T* S0 d) k9 h8 l
set color blue

/ t/ y  V& Q  ~* t) i9 Xend0 l3 |3 t% Y3 {' k# J! G

) J  e* \3 @% n7 f- k' yto poll-class
* ?: [# |, M! c8 m4 mend
6 z8 X8 r: I2 g# T* d" S" X4 v3 B+ ~) P& ^
to setup-plot1' ~+ I" B9 Z1 c* G. [# h9 r

' W7 f0 ~3 T% B8 p0 I9 ]set-current-plot "Trends-of-Local-reputation"

3 t& V3 n2 v" P! m9 G+ Z+ f0 Q8 F, E; }$ ?3 u" e+ `! q/ G
set-plot-x-range 0 xmax

3 c; \. `9 ^8 ^
/ |4 r' C9 g; E" F" g* N! v. Fset-plot-y-range 0.0 ymax
8 L) h! [! E* z, B! Z
end
" w  c7 J# T- q. V* k9 T5 n3 L
, d! y0 g: O( t' r, J) [8 M. hto setup-plot2, ^5 U, E( |1 \: k3 n1 P

5 q6 T0 y( @. a" ]0 h# tset-current-plot "Trends-of-global-reputation"

# L9 n& X) M0 g& n4 j5 i! n6 i% m/ X. _7 t
set-plot-x-range 0 xmax
# g; w( @  E9 D, `
; |, j+ [' d8 O# K; e
set-plot-y-range 0.0 ymax

2 J6 j% u* d8 t! U. Send  Y6 B% X, ^6 u6 e

9 a2 q" L+ v! b# k- U8 Q$ y+ Eto setup-plot3
/ S5 F1 ?. b. x* X9 ?' @' L8 z3 v- {6 _+ e
set-current-plot "Trends-of-credibility"
& `4 A$ {% ~( U, D$ F  d9 R1 B

" p: z- G% p/ G' @1 ^) N  Eset-plot-x-range 0 xmax
8 W7 f+ d5 P" J& n( O; Z0 h
. P0 N/ I5 G3 d  z
set-plot-y-range 0.0 ymax

1 O0 ^7 f- ?+ S) A5 f$ f+ P. Vend# F; M( N: g7 c8 Q. y0 l! L- p+ K6 x
7 X+ o3 D3 }$ W- Z) P7 p( a
to do-plots
' G. T! q0 s+ I0 {: U& _. ~% Lset-current-plot "Trends-of-Local-reputation"
& P' U" y2 y) K, i' v4 ^% iset-current-plot-pen "Honest service": |) }* o) H7 H# w
end
2 B2 X6 C7 E. t: f) [
  _% r! d9 I* x/ F. ~[ 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.
# k6 I9 O$ c% D3 K. s- |7 W! Q7 c) |) W5 I, g! ]
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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