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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:$ |4 T2 y1 l  }: c9 ]
to do-business
' R# O& o5 q5 c% ? rt random 360
8 J7 D% n( q% r fd 1
; n8 H4 n' K2 M+ s% w ifelse(other turtles-here != nobody)[$ o  u. Q9 S0 K; l/ J
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.1 D& L, S, w, c) M
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ! @% S: C0 S/ U
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer  o# m6 {2 O3 ]# [7 J; F" k
   set [trade-record-one-len] of self length [trade-record-one] of self
; A) _, v1 N; C7 @  @  \+ C   set trade-record-current( list (timer) (random money-upper-limit))
4 f: Y/ l  \: R! J5 K$ G* h8 w" n' \
问题的提示如下:
: v1 P7 q* e" \; Y' C+ t
* ]7 |0 g4 \2 A. X* terror while turtle 50 running OF in procedure DO-BUSINESS) V! n6 O6 v; i
  called by procedure GO
; e  a+ x6 V* v9 N: o1 ~, TOF expected input to be a turtle agentset or turtle but got NOBODY instead.0 b5 ^7 W6 l+ e& |; |
(halted running of go)
, ~' E, X/ E6 I4 D1 S3 J5 v7 P4 L$ m! ^0 i2 S9 z1 t
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~~
& ?4 w9 i% V% K& f. 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
- X; x5 E" R; ~3 ^2 ^( M/ f+ Lglobals[
7 F6 `9 J( V  W$ r; }7 o3 Pxmax
: d3 f. \& R5 {1 C" Mymax
; H( |, {( v+ y. R3 n' Zglobal-reputation-list
1 i4 z( t3 M7 Y
& ]8 A7 V9 g: D;;
每一个turtle的全局声誉都存在此LIST
5 [, v5 P9 X7 ?5 p2 Pcredibility-list
5 z+ S% \; B* ^1 v;;
每一个turtle的评价可信度
$ g  N. \/ U+ z. Zhonest-service
( D; V4 T. W* `5 G7 C6 V! Tunhonest-service1 N7 O/ T+ }0 p" ^6 i" P
oscillation
) Y3 ]  _5 t' ]rand-dynamic
* V' }9 d, j6 _% j  a]. W$ y' R2 b$ P3 J. F
3 X+ V8 p( J; J$ t9 C
turtles-own[% [; t0 x/ e( z* t6 N7 H/ `- h
trade-record-all; ~  |4 Z$ r: J- a" |* k; t
;;a list of lists,
trade-record-one组成
, Y" p- ?# n# s$ t4 P. Ftrade-record-one
! F5 n4 B5 {" `& B;;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 E# T/ ]0 y5 a$ O

' e5 J: M0 G2 S' `: v. \1 i# o: |) v;;[
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]]
, z- ^* V0 b% K  m6 g+ J- itrade-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]- K! A4 d% H. z  p
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list$ o9 }# ]; d$ `$ w' }- H+ l
neighbor-total0 C* P+ x- g. n' l4 W  o4 b/ I% y
;;
记录该turtle的邻居节点的数目* L9 q! M9 T' h
trade-time
" ]( w" l: V% h$ |0 D) a0 G7 A;;
当前发生交易的turtle的交易时间+ W9 Q) A! e$ H* F, \
appraise-give
& G8 `2 O* ?$ d5 P: e) f;;
当前发生交易时给出的评价: I/ C0 S8 h0 d* B2 V) C
appraise-receive" L- n9 R8 Q: H# [1 T3 M
;;
当前发生交易时收到的评价
) g  l5 x" Y- Y( ~2 A5 bappraise-time, {- F7 ]) c9 V7 ?! s8 I
;;
当前发生交易时的评价时间5 R7 T: X/ O8 d) R: v( _0 ]) l& G' B
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
3 r' s+ e/ ~  n/ rtrade-times-total
9 S& ~8 n0 k5 R* {; ^8 r- @& E;;
与当前turtle的交易总次数
% f" L; P% |1 ^: s% D. n/ ^trade-money-total4 H' H$ T8 K3 t8 A* B( @- `
;;
与当前turtle的交易总金额" q  a. `4 a9 K  i, h
local-reputation
2 H0 H: P: F6 X* Nglobal-reputation: R/ t0 f  A0 }, r6 u, W
credibility2 P$ }, C3 X( Q) N
;;
评价可信度,每次交易后都需要更新
; s, v1 w, V  D0 L3 Q3 J  wcredibility-all3 m2 X; y( T8 p5 P$ [
;;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' \- Z8 ~/ f; a& }; u2 n
5 d/ ]( _) O' t3 m9 u5 _
;;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
4 _3 x/ b8 l4 @& c. \3 C" L) }credibility-one
! t  ~& g" M# N' `;;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. R) D1 `  m' q; r
global-proportion# T7 f! V5 {* y0 N
customer
1 [: I  f: v" W2 b2 Lcustomer-no
2 k; j8 j! g, w/ d1 R( G# a% jtrust-ok
2 L0 D0 j6 _7 X/ b) ]1 U! dtrade-record-one-len;;trade-record-one的长度  K4 Q+ c  p) Q( Z/ |. q# q2 O  l
]
! V4 U, K2 G* _/ x, [* f% L4 i8 y5 y3 m& D
;;setup procedure
9 o3 A/ C1 w0 U/ A9 R# L  D
/ L( F8 W% E1 pto setup: C! E0 q, l. Z% Q

9 D9 _  Z% r8 r+ Mca

5 f, t! p" r7 d- S/ T6 _! U5 {* o2 \  c4 y5 Q7 O. O
initialize-settings
6 [5 g  h+ A1 V# X: r3 O$ F& W) t

! L6 L, c% ^: I2 |& p" @crt people [setup-turtles]
5 v: t, Q8 H. J) a. P& U
/ B1 W4 X9 Y0 _
reset-timer
7 M0 {& u, ?) \9 a, u" ^' a$ Q

% r# o; _1 ?, H/ z2 O! opoll-class
7 L9 i7 ]1 v! U8 @
: [3 V% W: I, t# I4 d
setup-plots

+ O' J- h7 A8 C
0 ]* e$ i8 X' ^9 u8 d  Q0 @" o. mdo-plots
) n, Y2 k2 `1 L9 ~+ g! ?
end
  v+ x$ B$ F. ]2 I3 R$ P# L6 ^7 ^% x+ h1 u- w
to initialize-settings
4 p. [. \  g! J; s0 t" e: x6 ~+ G  y5 z: @
set global-reputation-list []
! M* Y* ?( ~. a& J1 l
2 a8 B) m( l7 P4 G% i" Z
set credibility-list n-values people [0.5]

9 s0 W1 O8 ^$ W7 ~8 y3 H3 m2 ~6 W
set honest-service 0

0 K4 r  c$ T1 I" B, U* W8 x3 G. q9 T
* {; Y% y3 E* p2 [set unhonest-service 0
. o0 j; n/ w6 f

1 r' ]( P% y1 ^, I5 t. O0 lset oscillation 0

7 ?9 e1 W& v0 T1 Q0 T  Z
& h" Y. ?0 N1 Z- c' N- Hset rand-dynamic 0
4 z' }9 m/ {6 S, b
end0 V2 \0 P) ?8 A- A5 b
2 b8 |( M) h* l' A0 t3 n2 F
to setup-turtles
6 O7 o  i- a" ^: D) ]set shape "person"
: Z8 I. x/ X. Bsetxy random-xcor random-ycor
: u0 V9 T0 U4 ]' S  B. Lset trade-record-one []
( z! ^" y9 n$ c) b; k# }
9 Z' }2 D) g  T$ I8 c
set trade-record-all n-values people [(list (? + 1) 0 0)] 0 K9 k" @* _0 ^

/ |/ k6 @1 ^8 ]1 M: E% g7 `$ kset trade-record-current []  q8 Q- O  k8 f1 K. f
set credibility-receive []* n9 p4 w/ d8 V, a( V
set local-reputation 0.5
$ j. M: @8 V& Q8 G5 g' u+ y7 lset neighbor-total 0
) ]" I& i0 v/ L" F6 j5 Yset trade-times-total 0% J/ \( n$ A6 y
set trade-money-total 0
  U5 N% {1 w7 s7 W" s7 Kset customer nobody
7 b. N0 i3 {2 u/ T5 ?$ ?  I+ ~set credibility-all n-values people [creat-credibility]
, u; C% y6 A5 X. W0 ]set credibility n-values people [-1]
6 X# f: u5 ~9 s/ Q) x# bget-color: ?: l2 A; I5 {8 h0 r
/ E7 R4 ^9 p  S& F1 O' ~8 {% y
end* f% N2 |' {) C3 Q

( U& f( D1 H0 I( n& I2 {/ rto-report creat-credibility
$ s( k6 }& S* r2 N8 h4 s; `report n-values people [0.5]0 ~5 [$ T4 J, _$ q
end
1 Y& S% j, b$ P* i( o+ `
& ?0 N) F5 V! D$ b' ^to setup-plots9 c1 \  c  }  w  V& Z5 A
* A7 f+ j* C4 u6 @5 `
set xmax 30
1 Q" R% j: t, x9 ~/ J& ^/ S
3 c& }3 ]) b6 h
set ymax 1.0

' M% w! @/ }, y; p2 H( t- d( o
$ E' @. ?0 b. t$ yclear-all-plots

. o' v% i4 K+ _/ p1 \2 r
% I- f$ m3 Z0 U1 D) A/ g( Msetup-plot1

' S! d8 F1 O8 |; I9 x1 G" g6 f- [1 o) F- |4 U3 w
setup-plot2
0 ~3 g! I1 c7 Z1 W

. b9 F" T- w6 s  D1 Ysetup-plot3

9 Y' r- Q7 x# h; }; L8 gend+ E( X5 F6 f; ]. r

6 k8 G. I' `' t& O) k- R! `+ a;;run time procedures. N6 d0 h" y1 Z/ Y" Q" h

/ }) c/ _5 |% T1 {5 G- f+ Sto go
$ t5 [" K% F3 K4 z2 J, w) d$ r" G) M% X( p. h3 s$ Q
ask turtles [do-business]

* ]) j* D- o9 ?1 J6 M) Wend5 _6 B/ X  }5 R

" B' f# P3 U3 \. a0 x+ Rto do-business ) j( W" u4 Z% B6 s8 P

, O% I- X$ K- g* b& ^  l( f/ }. [9 Z& o, j1 K
rt random 360

& D+ N9 [, \+ ^& ^# V2 w: X% N, }5 z4 B1 b, U5 U
fd 1
! N( c6 D) e8 h4 c; [, \

  W2 R9 v% I/ u2 y. Gifelse(other turtles-here != nobody)[
$ `7 w$ s9 [' c% Z/ u+ \6 V

- h( V3 w5 I7 w$ tset customer one-of other turtles-here

. D0 n% g0 O$ D) ~$ J& {1 U6 K2 X5 _: g. B: K
;; set [customer] of customer myself

. H2 v% J: J2 J' b
+ I" Q5 d9 t& Q$ lset [trade-record-one] of self item (([who] of customer) - 1)
6 a& ?( U* H; @. F; J[trade-record-all]of self+ a2 U$ T/ C3 r$ D" q- Q8 l
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
. K  R' d1 L6 ~+ P7 C
) d* m6 i/ U# |" D
set [trade-record-one] of customer item (([who] of self) - 1)9 f- n: ~& f' G! T1 n' O/ R0 F; o
[trade-record-all]of customer

1 i) p+ M4 T7 T$ x6 b' Q$ L" [
! i* f/ q4 x" A% B$ {8 uset [trade-record-one-len] of self length [trade-record-one] of self

- U: p- L6 W5 Y6 s& N8 Y! Y( {% m+ {9 W
set trade-record-current( list (timer) (random money-upper-limit))

5 `" N0 ^7 o' H! ?/ e
9 v$ I$ k+ l5 W8 m' qask self [do-trust]% ]. ~2 F1 N: M8 ~
;;
先求ij的信任度2 ~7 i5 Y: P5 p; k' w# `" a7 ?
( W( a/ L7 W/ `, l! g* d
if ([trust-ok] of self)
3 |) z! d& o  M: q1 k# j2 m0 D' D. w;;
根据ij的信任度来决定是否与j进行交易[
& e# X# m$ `# E- _& P, T$ Y3 |ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself" r- k) j5 `' X( B5 r% `

( A$ O" J5 `( [+ k$ L[

! ~4 {% }$ [- B& h2 d7 F0 t
2 S+ \2 F, }  f# V+ wdo-trade
' G% a( C0 a9 E. f: f. j
; r5 _1 h, @0 {/ P0 K2 e% E2 b
update-credibility-ijl

' S) v4 W- f5 `7 o
' S. w/ I8 \/ S) tupdate-credibility-list# D7 g4 H7 {9 o

1 P4 u' y! ]. W0 d; t% r$ P* A9 v+ x6 }7 N
update-global-reputation-list
* S# e* G/ p9 N2 m

4 }+ B7 H+ [3 i/ ]poll-class
* B8 A( \+ e- {/ E* H$ w

1 j( ^1 m8 K  i4 b& s+ x7 l# vget-color
9 g4 c4 `: L$ `& P

, C: G3 f! ^, r% C, ]]]) H/ s  G6 b/ ^6 N4 p' c

: G$ U4 k4 K1 Y8 O8 T1 E;;
如果所得的信任度满足条件,则进行交易
$ N4 p( x) v7 F/ N* V) Y; l" W  M7 T* M# o. a
[

: |# N! J) C9 o/ F: M. ]3 R6 h/ M% D/ S- ^  K
rt random 360

8 b- Z- h  k2 w7 N1 l: o  ^" h  K" Z6 L& `" H, M6 m1 c0 G
fd 1
; r  n/ m% ^' X# E3 c: f
* U. z& A3 l- \; X% V
]

8 c" O8 x  Z4 D- W5 }, C3 _$ ~. _1 K7 V4 e- _# t, @
end
' G* M% [/ |5 a# o8 _  G  \

4 _2 v# |9 |9 Ato do-trust , u  p' z8 V8 ]+ `* O
set trust-ok False
' a: `5 s( @8 t$ O) R/ i% A7 e; {' ]/ H" H0 H0 B/ v+ x" N

) t  z7 e5 S2 F( a0 S+ R% y7 _, M# U5 }let max-trade-times 0! ?/ Z3 K7 n! Q+ M0 D) ~8 A2 I- t
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]: E8 c8 C# D. {+ B9 d; O
let max-trade-money 0. a# O4 Q& I$ V, R. x6 r
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]0 y/ T* j- i' x0 M. l8 ]$ {# p( h
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
: q$ x( F% D$ t' @7 ^  Y/ y; w8 d! H! x# q( a5 {2 t# i

" p" S8 F. ^/ S9 v5 q: Xget-global-proportion- @/ }2 q+ C- `! a$ t* R
let trust-value
* ^  z; c. s# O4 X5 _1 Llocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

5 d3 u" H$ c/ J6 m3 }if(trust-value > trade-trust-value)
& A5 J8 P( i% Y& w: E[set trust-ok true]
2 T. K6 U4 e% @' q6 Q: I* `* W; q9 b3 k3 yend
7 u. s. W' [8 h/ y# W  S9 }# Q  S+ g3 K" w+ v
to get-global-proportion' q5 W  Q/ t% p+ H: P- k6 Y
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3), o$ o+ t& g# u6 a
[set global-proportion 0]# Z8 m& [  v) C( O/ A. e  Y
[let i 0
0 Y  l( x( T: Q; u4 Blet sum-money 0
7 b0 y# c! C8 Q9 e2 Pwhile[ i < people]
) j& H: H. C+ y! M- N; W& ]1 ~[
0 d% E- C! x1 ~9 }if( length (item i, J2 x3 `9 e8 \+ ]# O% B; r. L! O
[trade-record-all] of customer) > 3 )
  d/ [, K. M7 u4 x
[: N' ~: n- t9 B. D- y
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
0 {# _- n3 N, |1 x& o. |, z]
- m4 f* j% }6 e% ]1 z]
1 E) Y8 Z, n. w* Elet j 0
5 D4 \- w$ A" Clet note 0) l4 o# C$ B( {) x; `+ M+ Q
while[ j < people]4 Z8 I& j0 l! _$ ?
[' v: }9 c9 j/ a
if( length (item i
  z+ S2 q: L2 [4 o* I7 c8 E[trade-record-all] of customer) > 3 )
- w* W9 f, d' |* H. P4 T! I$ c/ c
[! U) U' M" W% d1 D3 Q9 l  H
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)* y; A$ T$ k; o2 h( Y: E9 m
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
3 F$ `" O/ L" J& z9 j[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]/ H& {6 L# B- i
]* E5 M; C% X+ ?6 @( z# |0 K
], @; P) z0 b3 N$ V- |. V
set global-proportion note3 g* v8 l3 h/ P9 u+ {" V, k1 Q& b. z
]4 s" x3 S$ m% a, x  w3 w
end
3 j4 G& ?+ n1 w6 ^$ j5 J7 B" s' A5 K8 y+ p( Y; q& x
to do-trade& c; h4 a" e: c' d6 Q
;;
这个过程实际上是给双方作出评价的过程) [) j$ W" }# n) s+ R
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
5 q( Q. J& K( g' I/ o) C- vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
/ R/ w9 W( Q+ }# Bset trade-record-current lput(timer) trade-record-current
, o6 U2 r, q5 c4 J1 z  C! e7 ?;;
评价时间
) R0 H! t: R: I+ R. W! k. v8 Bask myself [
. d! d  Z! o: n4 ~& v$ jupdate-local-reputation6 N( R% {% K: @& I
set trade-record-current lput([local-reputation] of myself) trade-record-current5 y( S! e& O6 f# \& e# `. [1 S
]5 g% W3 B1 ]6 H1 a, I4 I: s1 T
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
4 L, R* Y% ?) \2 Z6 w  Y;;
将此次交易的记录加入到trade-record-one- p; y1 u/ m  i: }/ r5 C
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
7 g5 l3 P  A- D5 qlet note (item 2 trade-record-current )6 B" e- D3 M9 F$ A4 L3 w
set trade-record-current8 A5 m9 \8 b  o3 @( X( z- p  H* x
(replace-item 2 trade-record-current (item 3 trade-record-current))

3 {; E; d0 m2 N. p- d4 J, u. _set trade-record-current8 N# ?+ L, v% I8 D6 ]
(replace-item 3 trade-record-current note)
; l2 R! J  K4 j+ _7 x; J& A5 @- N7 G7 a0 ?

' l' ?' q$ z" R' O0 v# O0 z, wask customer [' ]- a4 X4 r' K5 i
update-local-reputation2 a8 z) T2 M/ o; c8 \9 T
set trade-record-current, [% D' F+ B: f, B3 F
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

- Y" B- B/ M$ ?6 B' a& N) A9 ]]7 s/ V( `- x3 E9 B

( U5 R& Y9 N0 n( T* I. I! R" F

: L# a/ S& Q- E6 E* [set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer3 a, M1 b2 i4 u$ p& V

4 o. v" F, g+ r( B. X& U! \set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))" o( D/ T5 y$ h# e2 g' x! b
;;
将此次交易的记录加入到customertrade-record-all1 h9 Y4 R: t: v) b7 P3 u
end; j& S$ v3 {3 \4 W

5 F0 N0 m( l8 j; z; m) kto update-local-reputation! j1 F' l3 h9 _
set [trade-record-one-len] of myself length [trade-record-one] of myself
# Z3 M/ I( q. P8 `6 [/ M3 x! s- T
- n$ `+ C: ^, a- `5 S! S
- c& l3 D8 }: ~4 E;;if [trade-record-one-len] of myself > 3
  i3 J2 G/ Y- g, K+ {
update-neighbor-total
4 u* ?$ U  Y! c) x3 U, Q* s  e;;
更新邻居节点的数目,在此进行
# @2 J) n2 |8 d& z6 W/ hlet i 3! |/ }; f) l( A+ s
let sum-time 05 W7 v0 G8 G  _5 f
while[i < [trade-record-one-len] of myself]  o, U" Z4 g! e3 N8 U
[
3 J9 ^& v; z8 l) e( m0 \set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )4 G# G1 |9 \" m# T
set i& g5 A1 K. B3 ?. A
( i + 1)

. A1 q; ~8 n' J$ l]
' _* r" s6 f, ~9 [3 _let j 3
; U+ M: p0 ~. J; klet sum-money 0
# h. W; Q6 X0 m! ~) w0 b, kwhile[j < [trade-record-one-len] of myself]. m6 O. y& X2 T0 L, H/ t
[
$ G1 @* ~5 S6 d+ D1 }' }, z. aset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)5 u$ F( e8 P% K  p$ }
set j) ^* F" J5 p( P& j& u2 ?  k- a% N
( j + 1)

, _" f$ y6 C2 h2 f# q$ {, q% \]
0 V2 W5 I- N5 i1 v6 ^: Llet k 3
7 f- R. `3 T0 k! Wlet power 0" Y5 {; l- ]9 ]% b# z/ a, R
let local 0' x7 d, ]8 ^4 @3 Y: @
while [k <[trade-record-one-len] of myself]
" i; `! N$ a* J[
2 Z0 q* |0 U- s% Gset 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) , h/ Q6 e: w& }% B% ~$ v/ i$ d
set k (k + 1)
4 ]3 t3 w4 _8 C; D]* O8 r+ l/ `8 G5 c7 ?4 V) y' |3 W
set [local-reputation] of myself (local)
3 G) Z5 }% `* }( y* W7 Qend
8 \- {5 p2 a( ^+ {- D# I" n0 D" _$ d- \; M3 S
to update-neighbor-total
! f+ k) F4 c2 x  `8 l$ F! j0 t0 W$ D9 D! A6 \# \: |
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]0 x% }7 p1 G+ I4 X$ U
* A% x, v, @0 ~* o8 R) V

( ?8 l, k& d* ^; Jend
+ w; E* H' W6 D; f# I' i4 W8 ~/ h  |! N) k# Q
to update-credibility-ijl
! H0 `. t! {9 p
4 K+ M: {( T) L$ U: r  G;;
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。. x; y& T. {# m5 [1 E( u# b. G
let l 0# _* E- [0 s4 N
while[ l < people ]5 U/ U+ W" W! q0 z( T* M
;;
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
% Y- n) Y2 L0 x6 ^[3 x* M. X% V9 k4 q  j# V2 s
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
6 G5 L3 g0 I$ Uif (trade-record-one-j-l-len > 3)7 p9 ^. ^4 c; U$ F
[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+ W( S* Y7 o) C% j: Y
let i 3
" h; y+ R8 x+ Ilet sum-time 0+ ~% Y3 z' o( D) D1 [' j' N+ r
while[i < trade-record-one-len]
0 z# r$ f0 Q( x6 s- X& U8 o  h  I[
% J6 r2 O2 A( J+ [$ @! y- _set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )1 ?. A6 I, M* |
set i
4 k! k7 B0 S" g' N( i + 1)

4 f6 Z( `0 E& |0 b1 |5 _]
" q$ Q! x' C" O0 c8 U" P& e5 S6 Plet credibility-i-j-l 0$ A5 ~' _, {, z$ }5 v+ t# o' Y
;;i
评价(jjl的评价)8 F% m9 p+ f6 l/ W. p7 f% a' C
let j 3$ X  l, X8 M( P
let k 4; Z% t- i* [' y- }8 Y9 S
while[j < trade-record-one-len]' `6 H& p3 o& Q! M
[" B, x6 J; k. |$ L! {, 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
7 x  {  l/ F7 w1 rset 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)& h9 V0 Y- B7 M
set j" M& b$ R; ^4 u( P+ y7 p
( j + 1)
$ p5 Q5 Y1 P& `: }: I3 Y" B
]7 g  T# \7 K2 ]4 U1 n
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 ))
- B6 i$ L9 L: j& b* X# k) s6 c/ Y5 Y% ]* {& {/ I
* ]1 ]7 W% c0 f4 @& \, k
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))' X7 [6 R" t9 Y6 \
;;
及时更新il的评价质量的评价
$ A( e9 ^. \. i+ ]  \8 u, Sset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]7 ^( p6 n5 v8 c8 I; X' o# X/ k$ y, V
set l (l + 1)6 a! I. y" K3 ]2 |
]
+ q; I0 G6 `3 f8 v! }+ p0 F2 `- P9 eend3 B' R1 Y0 `& M4 ]: E

2 n0 E5 F5 r- x; K9 L- ?/ `to update-credibility-list
6 i6 M6 _  O( g$ |let i 0  r& P6 t! f* v) ^" M
while[i < people]: P! n. h5 A) C6 L1 a) W
[# r8 m# t# l& T3 V2 b6 m
let j 0/ v1 i2 i4 `+ {
let note 0! k5 v1 C4 ~2 Q: K( ^2 c
let k 0  _; }0 _/ E2 i- k. U' Z
;;
计作出过评价的邻居节点的数目
& r  I$ I# }1 O7 R! E: Z  pwhile[j < people]
) ~; p( |4 J* l" W[, ^+ B1 }/ N) H: R0 b9 R# D( m; s
if (item j( [credibility] of turtle (i + 1)) != -1)7 r; ^3 s2 Z& k! P
;;
判断是否给本turtle的评价质量做出过评价的节点# f' m) Z9 w# a" p. P8 F+ e
[set note (note + item j ([credibility]of turtle (i + 1)))) V# Y5 R) r1 b* t6 ]
;;*(exp (-(people - 2)))/(people - 2))]

: X: K* B: f( X3 Z+ m" \  Kset k (k + 1)
7 ^; g+ g; J' ~2 w$ N]& V0 u9 F3 R, n
set j (j + 1)
+ ^0 ?/ {0 j" z]
& ]# E6 R9 ~+ q0 T) |+ S. Pset note (note *(exp (- (1 / k)))/ k)
6 I; j& z" j+ a0 D+ E9 E7 y. N9 u. ?set credibility-list (replace-item i credibility-list note)
" u: o% u3 B/ ~7 t! `) u$ [set i (i + 1)
, \9 J! I8 p2 o- \/ P0 v. Y8 g]
" Q5 Z/ U+ H( e0 D3 Eend+ @3 Z7 N; Z& J$ B8 F

. N, W% `/ |& `2 j" q2 J' jto update-global-reputation-list. ?0 X6 Q4 D' }1 [" o
let j 0( E  a2 N* I, c2 C. ]0 B# \
while[j < people]
' [" E* l- ?0 a) e1 F[7 P5 C. w( y" x3 p% s
let new 0  M2 `. m! p9 _/ u
;;
暂存新的一个全局声誉8 S5 H+ W/ f. I, k4 w8 b, @
let i 0. w, B, q3 d' t/ Q& [; X5 p
let sum-money 09 Q/ K9 _5 x% _  Z/ p  d5 |
let credibility-money 01 [& i6 {' C. x5 k  z  e
while [i < people]
# {1 H4 M1 \% a2 g7 v  _[$ s+ \7 T# m1 a" u3 _9 F
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))& ?5 p9 w1 r' f; u2 t
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))- Y7 [; {! O7 S8 |* I
set i (i + 1)- W# S% y0 B* A
]
5 I6 W# s) G" Y. _1 `7 Vlet k 0
8 N* A' j' Z; ]+ y! J/ P1 ulet new1 0
: |, D- {' r8 D! I( Hwhile [k < people]
; k9 A& v( v& E2 _7 Z, C- Z0 B/ z[
- {8 f6 J5 q1 x* I0 }1 Cset 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)
' m( ?3 y5 @5 B5 z4 C/ z4 A& V& }set k (k + 1); H! Q; L7 a  Z# p
]
  U2 Q2 M4 @: Q4 e* S5 C) pset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 1 Y- |* \+ y! |+ P+ b: Z; A
set global-reputation-list (replace-item j global-reputation-list new)
% V' g9 y( J' ]: P+ a  [- sset j (j + 1)
9 E& s3 i: u8 T7 u]1 ?) c% ]" v% }; t% F8 F% C
end
) B" F. `, P, }2 L, }, }$ n( p1 Z" x6 m( `" S& J

- ^. v0 u, U* f- h4 [" e- ?: ?  J2 D( J
to get-color3 y7 Q3 |" D5 H+ k' F

& {. G# C3 ]/ m& T! Z0 h9 ?9 X, |set color blue

; r0 o; P- i/ Q6 ?  W! Send; F' @$ Y9 {9 t, G/ \* C, U
' l' ]1 p2 ~: b" R( v
to poll-class* |; c; H" g' S1 @$ t
end
, n  _3 x) M( p9 F# K1 X/ X
# y8 m3 Y, V5 ?* r" Rto setup-plot1
% w; s( B% }, S! J5 E' [6 o* d0 p9 `5 N7 ^5 A6 I- D
set-current-plot "Trends-of-Local-reputation"
' N6 d5 l4 m" }. t' A8 K9 R9 Z: Q

+ w9 [7 L( a0 g& ?. n0 oset-plot-x-range 0 xmax
& e3 t* \0 ~2 J* H/ S
5 o! v# L+ Y  [2 `# ?, q  k
set-plot-y-range 0.0 ymax
# o4 y, C3 g7 |  ~; d
end
. J) F4 H8 y  Z, m5 t1 B3 v. n& N
+ {& X5 T* |3 {1 R$ O8 Yto setup-plot2
6 f, Z# A1 X) D; H& u  o' B) x5 u1 i1 d1 x5 x
set-current-plot "Trends-of-global-reputation"

9 G6 P" b+ r# w2 O
# B0 P2 V* R& \* u! `" H3 Rset-plot-x-range 0 xmax
1 D; _5 q  \# h3 k( I% I

# t# |, [8 G" Aset-plot-y-range 0.0 ymax
' i' N5 ^; v1 N  m8 ?% ]: I
end! C( P* `2 R# N6 i7 h
- R" c8 S- [; g9 s
to setup-plot3
. Q! v+ v, p0 K+ O1 u/ y# a3 i
1 I. Z" k0 @+ d9 kset-current-plot "Trends-of-credibility"

; a8 m* J" @3 o  ?, g7 Y1 K
( _' w7 W' ]7 {+ g1 Yset-plot-x-range 0 xmax

) k* e4 G- [1 x
$ U/ T7 q1 _2 W, E" Mset-plot-y-range 0.0 ymax

: T. t* N: j' @) b9 b+ eend" g( m, E0 Q& O$ G- B! h- N1 w8 U
: v1 \! I% m5 o- G' m0 Z$ f7 D9 ~
to do-plots
# |% B9 Z& O. M) Nset-current-plot "Trends-of-Local-reputation"
$ A4 A) E8 p4 x+ _set-current-plot-pen "Honest service"
% a6 k+ |$ r; S3 p0 rend
: y& `4 m+ S$ c& F7 ]" c7 {* {+ {: ?* Z# {
[ 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.+ n! R' ~) a5 V6 g; c( f( K4 A

- N1 E8 @. r4 D) _2 W( R! Y+ Q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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