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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:
/ p  J8 I$ I' A, x7 y* Z2 mto do-business
7 a* ?* Y8 S" L5 X0 v) ^ rt random 3607 n- E1 ~1 \/ i- `' F1 A0 O7 o
fd 1
" x) u0 w8 P# H+ _0 X& e: c" k ifelse(other turtles-here != nobody)[9 W# b/ e/ B" a. ^
   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 R8 p3 k& C  B7 z& w
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ! i: s/ R  h' J7 P1 x* d9 ~, B
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
1 X* U4 ^7 v) N9 f& P   set [trade-record-one-len] of self length [trade-record-one] of self( J' z" y, y) f5 I* s: S1 e* m
   set trade-record-current( list (timer) (random money-upper-limit))
; m3 w* y) q; @
5 Y; k% Y9 G* \$ J( N! s9 J4 r问题的提示如下:) h- g, M) d4 w: w! f8 F- d
& N' Q0 Y  u" y  V) q& n& ]
error while turtle 50 running OF in procedure DO-BUSINESS
$ u( v& p. M& ?# ^% N/ _+ H' k  called by procedure GO
- z' Z, w% ]7 C" mOF expected input to be a turtle agentset or turtle but got NOBODY instead.
7 i# D$ H9 O" c) I7 I* h  u
(halted running of go)4 E$ _# Z. M2 q5 h/ k& c. c5 {" b
# ]" P9 S  I8 E4 z, v8 I3 _% o
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~~
" [0 G. V% K( \5 h8 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" v0 S' t" R5 X* K
globals[7 J  i+ X. ~/ ]! R2 g) d+ ]: G
xmax
% h' u/ O5 Q. ~) gymax
1 K) p- Q. j; \$ Bglobal-reputation-list
" B  @8 O  l8 u6 l7 e. p8 x
" v' b7 J! k8 b/ U: i3 W+ ]0 W0 `;;
每一个turtle的全局声誉都存在此LIST
6 S3 M' @) W, O/ |credibility-list0 J- t8 f+ K; O9 l7 `: p
;;
每一个turtle的评价可信度1 w" }7 I( ]+ P& u& ?
honest-service4 k# m& f- u. S
unhonest-service
. ?2 y: t1 A# E" S7 J6 aoscillation# {, ]) r$ f5 b! g  Y
rand-dynamic- w3 V, u: _8 T# F4 o
]+ X# A; E9 s5 U$ B' @

2 A9 t5 d" S0 k5 {( iturtles-own[/ y  L9 w  ~2 f+ `; y% j! J, m9 s/ B
trade-record-all) J- u! U. `/ r+ W$ H' [7 A- ~
;;a list of lists,
trade-record-one组成
: v  H) j+ ?( N; ~8 w: y" Gtrade-record-one
  D' b/ e+ z, n) ~;;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 m# T. o' C: _! A3 p7 b/ H( m) a( s0 f9 u0 D1 H; l, G
;;[
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]]' t/ B  [! o. G1 D5 |( `& 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]
. X0 |5 m. Q1 F$ mcredibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
' }2 |9 R) i( i. |. l! `neighbor-total
) G% f$ A3 ]9 u+ a* [% Y5 ?;;
记录该turtle的邻居节点的数目+ w6 f! ?" Y1 m; [& e4 w
trade-time% V8 V) o4 D6 ], j1 _9 ^/ H
;;
当前发生交易的turtle的交易时间
2 c, `  L7 _% H. n) j$ g# ^: Gappraise-give
; ]' U" l, [) u, _;;
当前发生交易时给出的评价
) ^9 |5 b0 ?; t6 ^. y) B4 g8 ]; Iappraise-receive
+ W( f) n; C9 i( J;;
当前发生交易时收到的评价
# X2 y2 h, Q. `# T, m6 |( Rappraise-time7 G$ c% }; S* B& h3 O
;;
当前发生交易时的评价时间- ^% g& I  N% }; {3 c
local-reputation-now;;此次交易后相对于对方turtle的局部声誉- g8 o, ?* z8 V' h9 A1 ]
trade-times-total' z" k9 V0 h4 s1 r5 Y! l
;;
与当前turtle的交易总次数
9 x! a1 _! U7 z5 Rtrade-money-total
& a* \+ {1 q: h: v, W;;
与当前turtle的交易总金额
( {( ~4 x2 S% |5 {* G. Ylocal-reputation# }/ [7 F2 \) [: T* S6 k
global-reputation9 Z) H" A; \! ^; a; T: f( c
credibility6 J" _# ]& N6 r1 |  ], W! m9 U
;;
评价可信度,每次交易后都需要更新
* z9 U9 w3 d4 fcredibility-all
; ~8 o, w9 Q1 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
9 Y! {* L  h$ `- k  C) E' u+ g) t. O0 |! j( e: M
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.53 l$ v% y# o( q# e$ `  P# H- x: T
credibility-one( B2 ]" F  |& Q) p+ E+ ]' ^4 h' Z
;;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  I; ~1 x2 p1 U! d' C
global-proportion& [9 n+ X! j* @$ j% g) W
customer8 V. e7 a- {: {2 X- e
customer-no
9 W1 t4 Y7 M5 s  N5 ktrust-ok
! H' |: d% w1 `" s8 ^trade-record-one-len;;trade-record-one的长度
5 g) w9 y7 I( T3 ^+ z1 H. p  S]6 T2 ?' e! g' ]* v. N$ Z1 L

: j0 T( v6 G: }" X6 {;;setup procedure
- M& S( s, c" g- ^7 j& O
7 h. v8 m  ]- C- }to setup, G9 G& Y4 Q& t
9 k, [7 r0 Q6 K
ca

2 T/ S4 f# b9 |% a5 J/ x1 I6 V+ S/ N8 f$ f+ h3 E" _/ ~! i& U
initialize-settings

7 z4 }( R5 [) B- K; |
5 g8 a, f2 _" i/ _crt people [setup-turtles]

1 i( P' V8 t% b( {( t+ p, P5 j( _) v9 Y2 k) \
reset-timer
9 y6 B' U2 V9 `! d0 r1 K2 K: Y
  D6 x+ {1 v* G# |4 y! z- @
poll-class
" N+ `1 ], a5 Q6 R" Z1 Q
4 c8 T/ E  M" |4 ]
setup-plots

/ `* O9 P: {! m
( R/ E6 U2 ~0 {9 Jdo-plots

/ w( r, f: y- n2 ?8 k* K! f! Wend1 ~1 M. I' G) C/ T

( Y+ g' w( J5 v; f& a# uto initialize-settings
9 t' }) X* y' s2 V- }: t% T0 p: W3 ^- v+ q$ l; u
set global-reputation-list []
  y" ^7 d3 z/ ]! z* k

1 b' A2 V0 z/ _0 q$ e. k, zset credibility-list n-values people [0.5]

5 I/ l/ N. }, p8 O% V2 P+ a
6 {  z9 ?) j" z5 gset honest-service 0

  @; f! r: m5 T( G$ W5 K2 M
7 h" ^5 m5 w( G/ pset unhonest-service 0

. k# S$ Y0 Y% ~# v
) p! r, Y: E8 E/ `6 V, _set oscillation 0
$ K  J0 S; Q( A8 l' E
3 H: X# v1 ~0 p4 r3 V3 F
set rand-dynamic 0

3 z. q" c0 P1 p. [% X5 }) Lend
" m& h2 M0 E5 ^. l
9 N/ g5 L; S2 a) r; Yto setup-turtles
0 I/ `  n+ v2 }# Qset shape "person"
7 T8 d( m$ y* r3 W0 L) E2 t( ^- _setxy random-xcor random-ycor- d: t' {, ~$ t$ K2 d* x
set trade-record-one []
5 o7 L: a+ ~2 U. A; |% q; t
" i3 U3 W- K( H, B% Y
set trade-record-all n-values people [(list (? + 1) 0 0)]
; W  O6 U( y* M7 A: j

  I6 \9 `* m7 \8 u7 D& fset trade-record-current []
. V  h' [9 `% X; G* Uset credibility-receive []
# ~0 I' Y' P6 C5 i' k% o5 cset local-reputation 0.54 v& u5 S; V# B$ J
set neighbor-total 0; P) n4 {2 r+ z- x, |
set trade-times-total 00 k' v! a% `1 W- Q8 d2 A/ D6 j
set trade-money-total 0  i) C0 N. r+ v8 Q* Q
set customer nobody
7 ?$ V$ L# \, R4 K5 y. uset credibility-all n-values people [creat-credibility]/ n. t' J  P; x, y* k! J: A( O
set credibility n-values people [-1]. z: T( U$ e- Z; C3 L7 p  `
get-color
  ]5 ]/ d) w7 r5 H! t" u

4 {. x: q  w( f7 x/ Mend2 g: T4 t% [0 o% N" H; h

5 r4 F9 p. @- K4 Jto-report creat-credibility& H; e# f+ Q& v. v! \
report n-values people [0.5]9 E3 T7 p! r& _% h
end
% L, C4 g( x" V- {
& R6 D# _8 O, l6 c; y$ r7 @' Y+ s4 uto setup-plots
% q( G+ d& x3 S* z
. x. u& j9 a8 T$ ^+ z# S% }9 Rset xmax 30
5 U, X- P4 f) u" I; J0 v' C+ R5 @' I

' p2 M9 @0 W9 @& B, |set ymax 1.0
* V* q& ]7 N# b( Z/ r& Y5 s( N; T
1 K" f5 Y; p, u# u( t! }
clear-all-plots
2 U+ H! R: j3 Q4 k4 u# h

8 |# r$ n" ~) s* I6 P! w/ t9 Psetup-plot1
5 [- j: S2 ~, {9 {. k" k3 q) E1 q
4 ?' B; M+ Z% X0 z- Z# `# @
setup-plot2
+ ?* J2 `0 o: L: x* Y

) E( `& R( d% j) [; ]: k- hsetup-plot3
; D0 k+ L. l+ O1 Y1 ^6 ]
end  L+ M% u; p9 w7 a  W0 M

. v  t0 s9 w! T( h0 J;;run time procedures" A4 a( N+ G. @9 a2 E4 f* R# K& X
/ q& y: j$ Q/ {, U( u6 \, K' N# R/ s  o
to go! a) O$ D, ]5 y. R* n5 C: D* V
; e. H4 D7 M8 N
ask turtles [do-business]

" ]7 {" ~, g5 u7 y! N6 O- S6 h3 Mend1 [2 T# _$ i3 N5 u) E+ y

9 y1 S; l! @+ lto do-business
, s5 h% x0 r: x  S

; M3 o& B1 E- E$ C- A1 D
6 T9 m: p, q% \$ T+ n. jrt random 360
0 s7 U+ x1 m' j5 u; q+ A0 T" K

$ Y- z1 s; B* S8 y- u, Gfd 1

+ s/ t! ~% n# |, M; ]$ m0 Z/ x
; N% m% A& Y3 z- y  x) s) x: T7 ~ifelse(other turtles-here != nobody)[
7 U3 V6 P& e; b! T7 f0 d4 b

# O" c, z; u6 q9 Z  }0 Z: r0 `set customer one-of other turtles-here

: l4 T, ?$ S$ }$ M. S7 j, @6 Y- f; }; y7 n  x- V
;; set [customer] of customer myself

2 r# G* e7 `& E  Z
, b  u; S+ l3 `6 k9 o/ nset [trade-record-one] of self item (([who] of customer) - 1)# S- u4 j2 L5 i* S" R! ]1 u
[trade-record-all]of self
' u* A. k; ?# U$ M3 s. q9 Y;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

) g, m; X- z  k& {4 G9 i  B2 V" V
: f$ W7 V0 C( @4 M1 Z  z) {set [trade-record-one] of customer item (([who] of self) - 1)
! L. P! F1 t: C( p8 x1 n( k! t2 z[trade-record-all]of customer

: X3 z& P2 a. f6 ^1 I' D& ^
6 r6 Q1 R* R) Y$ Q7 a# t1 a3 Oset [trade-record-one-len] of self length [trade-record-one] of self
; Z5 p* w+ \/ a9 H, @1 S) `) C
4 {+ F, h+ r" e2 E0 A' h" F
set trade-record-current( list (timer) (random money-upper-limit))

# e3 x6 b% n. ~
, V+ _" F& ~8 K/ Wask self [do-trust]8 g# ]$ H4 R9 K) v& ~" n* T' h
;;
先求ij的信任度
7 G* E- h3 `* d% f5 B% ?; I6 t
7 ^5 j5 k7 g  H9 I5 eif ([trust-ok] of self); \2 L8 p& e. t1 j  M
;;
根据ij的信任度来决定是否与j进行交易[
$ L$ w- E2 e" v# V7 \7 a% c0 T8 ^ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself2 G2 r/ `+ f; Y- s

5 M4 n) k9 ]5 o/ _* l[

5 i- R4 P8 w2 b" L7 W  N- b% P- Y2 P6 v/ w& w
do-trade
. k% z2 ]4 F/ g8 c9 i% k" k
' l2 ~  t! E# w4 ]& ]3 C# f
update-credibility-ijl

$ w' x$ W% X5 b1 ]& \6 G/ W* N) n4 d  T* x& z- f
update-credibility-list
, o0 i/ R, v8 C6 Z
( J9 @- ^# E) G! `
9 t( |  l, ?; s; P5 L0 i/ o
update-global-reputation-list

* z! N& z4 n' N5 w3 X" {! {* E
; i9 E2 i' F6 vpoll-class
% ~! n0 m/ K, X% F! Y& H
' W, |3 _0 b* H5 y! p
get-color

' W, ^5 N+ b9 z* ^
& k+ W" D# G% |1 g) V3 d]]$ u" o' |( O# C

; @$ o! `% L$ n$ r6 p;;
如果所得的信任度满足条件,则进行交易- H5 p# g! L5 a6 _+ }  X
5 F  l! R  p( x' h
[
7 Z( d* U, b' a! R$ k, z

  I3 j" ~5 T9 r6 r' c- Brt random 360

% {& l4 R# I# @" A; r3 l& a! m; Y
6 S- A: j2 ?1 x8 Y( Y# ~fd 1

4 x2 K- S% M& x3 d- X9 {( y1 D; P, L7 Q% o/ f$ w3 L+ s
]

5 g+ K0 _& m, _; Q$ `# A1 r0 M- f: U0 ~) X
end

8 o) M! h6 p: A2 F( D2 c! o( m8 z5 R. D) l
to do-trust
9 f( T* H6 D: P! vset trust-ok False
$ |% i' l4 B# X+ y5 V4 A0 `- D! }; y' T4 K
# f; T# ]; Y( D! A+ P0 x6 a
let max-trade-times 0
; E2 a9 g$ S; q( [- _foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
( K  `$ c5 E0 u1 a4 N1 `0 j) }! Slet max-trade-money 0# F2 M) b  e; H
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
, I" i7 [$ a# c8 I- H) slet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))" n* H' i& A4 N1 o% a

8 x/ Z1 w3 ]: m1 k' v7 d( s7 t

! W( e6 D% |4 f, L3 k% h7 l8 Y# ^get-global-proportion  R$ }1 n/ B9 }, O3 O
let trust-value( U/ L( I# O6 j  @0 _
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
1 U" T4 s( j7 p& ~
if(trust-value > trade-trust-value)
$ T; p' I, R8 d& H. m3 t[set trust-ok true]! G, I8 ]; E8 m8 Y
end
& d" A( T$ d! c* r2 T* W% |
6 p7 m7 Y& c- \) w- I# Jto get-global-proportion
" n' f$ Z1 z, S2 F0 a9 bifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
8 Y8 z" ?1 B" z$ Q/ V3 n[set global-proportion 0]( D- A; U2 e7 I7 P; [; |$ x$ t
[let i 0
5 y8 D) i$ ~. dlet sum-money 0
+ a) u; j$ X2 D9 `- L3 jwhile[ i < people]
( z# H" H7 c6 }( w[8 Z1 t6 O* ~! L! S
if( length (item i
9 ~. X! o3 I4 ?* e[trade-record-all] of customer) > 3 )
7 x' v# k$ [1 ~8 u3 k% O2 k; h
[+ ~5 @; z8 Y, ^3 U
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
$ B+ s7 y* S+ u% H. V3 d3 A]
2 }) S) J  A% s]( v) Z0 E3 O, O- ~3 N
let j 0
; a  R' q% f% _5 H( P: q! r; o6 \let note 00 U: r) O: N9 k; b
while[ j < people]$ A; `# i8 F7 n6 z
[
* F! c8 X7 l5 C: Sif( length (item i6 ^: [5 W/ D- D% f$ G
[trade-record-all] of customer) > 3 )
0 H5 e1 A3 N2 _) W5 `' g9 w9 C7 Z# w
[* }- L7 m' U+ l! q; X6 B6 t" y- I
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
0 F, I/ n: h' W% ][set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]+ e# ^: s% Q1 x! ^; ^+ @% i
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]5 ~0 E3 G/ B2 g7 H
], U) Q. W* u1 D7 [+ l
]) G: a5 @0 h+ {" D. G8 w2 x$ E
set global-proportion note
1 e& M9 `5 D( q: e* r]  Y5 g& Y6 q2 x$ P0 f  T/ y9 v8 T
end
* d6 f3 w; n8 @
: T! |* ?3 J$ h0 j* K  N5 b9 nto do-trade
+ }) T% q, z$ H4 C; T0 t* {5 F;;
这个过程实际上是给双方作出评价的过程. a7 f/ Z0 ]% F5 D7 M8 k7 c
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价5 z5 c# L3 K" {/ ~2 m3 I
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价* _( ^4 B- `& @0 v
set trade-record-current lput(timer) trade-record-current
, O4 M$ X0 @' m- h0 m+ q;;
评价时间
8 g5 J1 \: I$ t& Iask myself [
6 p" K/ n% `: P$ hupdate-local-reputation+ B3 E# x6 V4 Z/ t+ s3 P
set trade-record-current lput([local-reputation] of myself) trade-record-current4 l0 d9 H0 h, n5 T% |+ `
]
4 E0 ^: r$ i/ X/ iset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
& s* m3 b  H6 r: r+ G;;
将此次交易的记录加入到trade-record-one! Q# x3 Z1 U0 r! l' ^' F7 b, x
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
9 ?3 E" n2 \3 o6 Vlet note (item 2 trade-record-current )5 d5 D" c5 j3 w! M# w
set trade-record-current
5 g. r6 T* `2 r# n$ @+ A& p(replace-item 2 trade-record-current (item 3 trade-record-current))

# N& c2 p; b$ [set trade-record-current
% b* f, H4 |& v+ |; l) W! r8 Q(replace-item 3 trade-record-current note)
) n1 u9 N+ V, Q7 s9 y' p: h4 X4 V7 }; i( c; ~* \; h  s

: @( D# V" b7 h8 ?" v5 ~ask customer [
  B* Y5 d! Y4 A, [7 y7 {" Rupdate-local-reputation! W+ f1 F2 {, O) z
set trade-record-current
/ ]0 ?* y& L: ^2 y+ p8 Y(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
, u. F9 |% D$ x. @) m( b, @5 f
]$ h( k. T4 a  p1 ]! W. m" N

4 M3 s  S5 ]8 ?/ l" Y% P* f

& R1 X8 R+ O/ y6 y0 r0 p# kset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer7 J/ x. O& C# T1 K0 z4 n# }$ V0 h

: M- S/ G/ K; \# c% |6 U+ z* ~- m4 Gset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
2 p9 Z& K0 X1 C+ S; `. n" g2 J;;
将此次交易的记录加入到customertrade-record-all' W! b  u- Z+ ]& ?, T
end
$ `# D$ U7 u2 ~. f' c6 y9 y
0 b1 F; ?5 [+ b) g6 P+ N" eto update-local-reputation
- X+ ~8 A, f# R: [9 v7 X9 fset [trade-record-one-len] of myself length [trade-record-one] of myself7 |: w9 X2 M2 |# }8 u

; h0 M; k6 @! m! ^2 g/ |6 q7 [- o
;;if [trade-record-one-len] of myself > 3
- R$ E# T8 n* e* l: ^$ P; q
update-neighbor-total4 w! Q' }" z. `& D' y3 W* O
;;
更新邻居节点的数目,在此进行. G1 B; m0 Z4 G# @0 M$ H: v
let i 3
+ x1 A( j; o! q) Ulet sum-time 0
1 U2 Q7 g* N! |9 U7 K2 M2 x3 Y% nwhile[i < [trade-record-one-len] of myself]  ?, S7 R1 s6 B
[
! \: N8 R4 ]" C' Nset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )9 r8 D1 d9 d4 X6 A+ S2 Z8 n
set i
2 K  E( ~! Y2 D+ q8 }" I( i + 1)
& y8 Q% S) D) b, r6 [9 y9 _1 g% n
]; E# ~2 b4 w5 Q( Q
let j 3
/ r  Z; i3 D- ]: L! v, ~" |' Ulet sum-money 0
& |  b+ Q) G% s6 ]) Mwhile[j < [trade-record-one-len] of myself]
8 B- b( ~- C& _9 V/ J  C4 u! B[' p2 w9 V9 Y. R, c4 ^, O6 A6 Q) N
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). M7 d: {$ C% M2 D
set j/ o! l- r/ m0 t
( j + 1)
) h! ^/ R# m, a
]! O6 u7 v" B- P# z7 X
let k 3
0 E) Z8 _$ g8 [* ^let power 0
. D% b+ W. y6 N, K1 A) olet local 0/ a4 J, i! d. j
while [k <[trade-record-one-len] of myself]
  Z- w" G" S8 N+ F2 Y( r: w: u9 G[& P% [$ F* H* P4 z% ?7 l; J+ z
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) ) b! {$ o5 `9 k
set k (k + 1)
' d7 \! f$ u' W* _  ^]
/ I, V- d$ R1 \  E/ Y* Q# y# R; Cset [local-reputation] of myself (local)
; [+ [* r( A+ z$ vend  ?: t, ?5 @- ?& V, p

# w( c/ I3 D- ^! p+ a- I% S# v6 Cto update-neighbor-total
' d9 q0 [+ W8 S8 K
/ `% v! _3 J% {7 i3 Oif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]* U( `% T! I" E& Y4 T* j
: w7 C8 ~" a: K; r( q3 }. o, m

8 W# K" h0 G5 q4 `5 r( o' Nend
. |8 _% n& b$ A3 R
7 ]" o0 _: M' Q' _0 }7 \to update-credibility-ijl
6 [! t: g8 k8 a( t8 f# M9 e. M4 v1 M- l6 P! e3 a- L  R
;;
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。$ [' \; s0 J+ E  \% X& s
let l 03 ]/ X0 ^  ?3 v" v! M
while[ l < people ]
3 R" C' s7 l7 x6 \7 {;;
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
! Y3 j8 A' s& x' Y, v; g3 N$ f[# H& g9 r1 O# ~. I7 G+ j
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
% L* R# H# o, @; J) B9 z& @1 @( i2 S/ Pif (trade-record-one-j-l-len > 3)
2 C! E$ l+ V" K) W3 _5 l( c8 Z[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-one9 J0 b1 E  |) b5 P" @
let i 33 N$ V% W1 n2 Q8 y7 s
let sum-time 0: c7 H; u2 m0 n0 ?, S6 N1 d
while[i < trade-record-one-len]. v6 Q7 j1 V6 W" m+ R7 I! H
[
3 F8 x! v# d* j0 rset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )6 T+ U& a" ~& j! u0 e7 p3 G# A
set i4 _' R4 E& @3 U9 Q
( i + 1)

6 ?6 R5 W- z* k: ~$ b]
: p  k8 e. x) v( r; a% y* ulet credibility-i-j-l 01 \. Q4 ]5 D4 g. y: Y
;;i
评价(jjl的评价)9 P' t3 g$ R+ s* `3 |
let j 3
" ^' L, m! R- ]% h6 dlet k 4
$ V8 B+ W; S) Y" D8 P7 Iwhile[j < trade-record-one-len]3 {3 N$ s$ D6 C' ~1 N
[: E+ t! S, J. r7 v  I+ `* `0 r' b
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1 @$ f+ t% D# p" S
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)6 a% D  k3 v: y9 P% A
set j+ J( t* }+ l# K5 q
( j + 1)
4 {# k0 |% a6 ?, a
]
$ A  H' o% g0 E# `4 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 ))) F5 k0 g" i0 F; r: c

- z4 r9 M, E6 ~5 {. r& l3 j
8 {4 G2 n. ^# n: O) O5 L
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))) P0 O* A; }0 M" Y9 N
;;
及时更新il的评价质量的评价7 s% d+ A4 N1 ^7 I+ M7 `8 l. Y% g
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
& u  h% Y! h$ A5 hset l (l + 1)
: v. d  ^0 F$ s) f]% a# ]) N8 Q$ y
end  `- u" e" |0 N0 p

! k' O9 Q5 e7 J+ o( J& Y$ [to update-credibility-list
, w1 U3 v, X& x4 qlet i 07 h& V5 o' b. k8 v' Z5 U
while[i < people]% K# x. m7 Q5 Q' Y2 G0 Z- l3 W+ e
[
( C) J; F" E! q# ^/ G: L9 N! A9 jlet j 0
, d0 Z+ @$ S- J6 T0 z; zlet note 0) ?! g+ N* `; M6 r( k
let k 08 h7 y- x0 f* e2 v$ B
;;
计作出过评价的邻居节点的数目# H- \6 P+ J+ @
while[j < people]
' P0 J3 r* b0 h# ~" `: Z$ K! x" g8 I[
4 k( w, ?, j% a3 |0 `) e! @( mif (item j( [credibility] of turtle (i + 1)) != -1)& h+ G; {. ^- c+ i  ?4 S. z+ n
;;
判断是否给本turtle的评价质量做出过评价的节点: E4 p& d% `5 k; B
[set note (note + item j ([credibility]of turtle (i + 1)))+ a! Z7 `# H" U2 w) ~( h$ S
;;*(exp (-(people - 2)))/(people - 2))]
8 }# c9 j) W: @% n/ n
set k (k + 1)
3 ]6 x& |2 J) ~/ c4 C2 p  U6 Q  Y6 k]
1 Z9 \' Z5 T( E# H/ _: t( ^8 Oset j (j + 1)
0 z$ l  T0 y1 U4 W+ o- []
( r" Q( k; X0 Z+ r( `: q( hset note (note *(exp (- (1 / k)))/ k)9 ]: `0 O. l( o2 w* w2 M
set credibility-list (replace-item i credibility-list note)
: q" F+ i9 m/ s8 qset i (i + 1)5 s' l+ H+ j; Q  N- I
]
# u5 t3 B7 q( X4 K+ ]8 m. k& Dend% s* D0 T( `0 a8 q1 k
0 E. ?) R) ]  ]8 C% r$ w2 w# A
to update-global-reputation-list
# G0 K, S5 ]/ [2 Zlet j 0& Z$ `. W6 \! J' G' {) H! v
while[j < people]9 f" h  S  G: ^1 ^9 C0 L
[
7 n2 r, y+ e2 zlet new 0
3 R2 `. x3 i; n8 v;;
暂存新的一个全局声誉6 z2 a. e) Z. O. Y; i
let i 06 S3 Q- J$ T( F& W# }8 n' K
let sum-money 0: }7 A! B: K& Y
let credibility-money 05 X" [; }9 ^; q" M
while [i < people]
  k, z+ W" f) J[
$ Y; W6 P% J( r# X! H: f* Y* eset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))9 q7 F3 Q- g( l/ Y
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
0 ^( y0 y( O: e# D; I3 u1 t' }& Jset i (i + 1)& `# ~* H* `- U. K' Y
]
! g$ R8 W2 i+ ?  F5 [4 f; G7 ylet k 0
( F$ Y( S! Z! p& q3 w% Z8 }% olet new1 0
* F* I* F) t0 D- |" f; hwhile [k < people]
. E3 X1 r4 y3 O4 m& A[
, i# a! H4 a; d1 ]/ nset 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)
  g; j* d9 F. g: v3 p% sset k (k + 1)8 U/ n$ X- j) g& k* E6 M% r
]( l2 A# ~' B# n+ y% W
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
6 d6 U0 o) z! Y7 gset global-reputation-list (replace-item j global-reputation-list new)
; Y0 A: Y! {# t% {$ pset j (j + 1)' l# k# `! H+ g( j' d+ D4 r& V7 L3 I
]
" i6 ~8 @( @! r: Y: L" R6 Uend
" @) a" s2 ?/ _- m
9 A" g+ b$ D) `
0 g/ e* ]( d/ ]  F7 D3 @8 G
- f" p6 @$ I2 Y6 M4 `% @4 ~to get-color
! ~- Y: o: T& Y# a$ H
; k& t& j; f6 Nset color blue
& Y5 O5 N: r8 s5 O
end1 b3 L- O4 W! I1 z

: |# E/ Y: B5 W) x0 hto poll-class
- ?& l0 G0 U! V( v9 iend
3 Z- X8 Q% y2 I+ q" y3 q; J' r
; i* ~- |  h+ `. ^9 r" Kto setup-plot1
0 f2 e+ D  a+ I- @& l  d# I6 R* a: ^% l+ g( ]; W# a
set-current-plot "Trends-of-Local-reputation"

6 P" ~5 I5 i* |2 O/ K( f4 ^4 o( Q# q# B+ G
set-plot-x-range 0 xmax
; b' L0 C/ j/ ^/ S2 @7 U) L3 p2 D, V

# J: a1 K+ {0 m; u. o4 _; I: Tset-plot-y-range 0.0 ymax

1 M- d- ^2 D: w6 l4 w& D( W* Uend
+ a- G9 q! ~/ T% h2 n; m- T
* V9 k( g  L9 P" r) _to setup-plot2' J" h3 Y. M# Y, e
- Z- M2 \) I1 m/ D% Y+ V3 i
set-current-plot "Trends-of-global-reputation"

& e; M: A" W" p, w1 X" G# n
% f- ~4 I/ F% w" p7 k, Aset-plot-x-range 0 xmax
3 m4 A+ v6 s3 H7 l
) `" O3 p9 s& [6 l! \
set-plot-y-range 0.0 ymax
2 s" h. L+ F0 F/ N( G+ y
end# X( d1 D. B5 ]: l, h
" J2 O" ~/ S2 q9 [3 d! v$ g3 G
to setup-plot3  ?/ z- H1 ^: v
5 T& S; k; r3 _5 G' o7 G
set-current-plot "Trends-of-credibility"

% K6 V- g% }9 n% e0 V- y- E
# W# A: ]/ ^3 H: K7 k* |- h% uset-plot-x-range 0 xmax
% m! `9 H5 i5 p. ?/ M
" q$ Z! y# t# O6 `7 z3 @; i
set-plot-y-range 0.0 ymax

, D5 V) D; K4 \1 V9 g; n3 d- Rend8 D* i/ u0 d- H7 o5 m6 H4 E

: ^* B9 Z+ U  r  ~% Gto do-plots
1 i! |+ P( ~1 N# t6 F# b$ iset-current-plot "Trends-of-Local-reputation"
9 y9 I! M9 q) P8 b. P) pset-current-plot-pen "Honest service"
0 V2 ~; U4 |% d' t5 zend
) e/ |) C4 p' n. t9 n4 e/ o& w7 B) E) N* T1 e( B
[ 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.
7 o7 f$ _( W! K0 X8 q  i2 O
1 ]* R. ^/ y4 {5 r( 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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