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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 R2 }* A3 q7 {3 I$ Kto do-business
4 D$ m7 U: X. l8 z rt random 360% V! G  u4 ]+ Q
fd 1/ `& |' S' R4 a% c
ifelse(other turtles-here != nobody)[" Y/ y; q1 m8 v2 U' u- b2 z0 r
   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.
$ x3 X. U; g* X9 f6 V% E# |   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
( T5 A5 ?) q) y6 z   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer" E- a' i2 J. g# M! a9 o/ _
   set [trade-record-one-len] of self length [trade-record-one] of self- c4 G1 t" L, M$ L# h" o
   set trade-record-current( list (timer) (random money-upper-limit))4 I" ~+ [/ m) ?7 u1 O

6 h; Y# c7 K0 y4 W, Q  P2 t问题的提示如下:, {# _6 u' k4 ?5 o

" W; L* o' b# ]9 O, e% h2 a! T! ierror while turtle 50 running OF in procedure DO-BUSINESS2 b0 T- G* R) y. T, `
  called by procedure GO
' g/ D) R" q. n$ t3 F$ b+ p. v6 AOF expected input to be a turtle agentset or turtle but got NOBODY instead.% H! O: q) l4 s, m: }
(halted running of go)" o1 ~$ x- [' s" P& `; o* Z! ?

' H) j+ m, t; N& I4 M; ~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 \+ F& P; @. c6 N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 V; w  I4 \/ k+ b8 L4 m" ^globals[
4 P) A" ?! K6 D) f4 n* N+ I% Mxmax! z8 `/ V, r4 X' j7 |( V. O5 Y7 w
ymax
* ]' w5 q& ^6 a# E) E' oglobal-reputation-list
4 s9 t( k+ q- T7 K( ^4 z
7 X7 G6 W9 B/ o& V% J2 C5 \;;
每一个turtle的全局声誉都存在此LIST! i1 A& z0 Q1 d" S( E# \
credibility-list
) M. |  Q' b  Q: @! ?4 [;;
每一个turtle的评价可信度9 ^: z9 {  c& d- [, d8 ?% p3 m
honest-service
, G7 m  H$ x. P6 \! t; \4 Aunhonest-service
, k# [$ [2 H( Uoscillation8 f& a6 c/ v: K5 c* D- {
rand-dynamic5 i7 W$ B6 I, l: q, e
]% l; X" m& @' _; K2 g
9 U8 R- i( v+ d/ w
turtles-own[0 W: \7 p$ y+ x9 C
trade-record-all
, Z( w. S' M  P;;a list of lists,
trade-record-one组成
" r4 r+ n2 Z) ?9 u4 u: g4 D. Btrade-record-one
& p) F( q8 q8 Z4 g+ k6 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
; I! n" }' e( X4 W, X
* v" W0 @5 q: L, l9 L) g4 c, ^7 ?;;[
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]]
# x" E$ a+ W' F) c8 ?5 [# Ptrade-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]; h7 r+ E! o3 P8 R8 o4 o
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list0 q: s2 @3 b8 o% ?: E7 @( ?: o3 @
neighbor-total1 Y. W/ L- m, h7 H3 z4 C
;;
记录该turtle的邻居节点的数目
; Z) K+ A& j* }% Btrade-time+ N# ]+ v% a9 C3 m! {
;;
当前发生交易的turtle的交易时间
% X1 Q" }+ v2 q8 I: yappraise-give
: ~4 F8 _5 }8 T+ }# N$ S;;
当前发生交易时给出的评价
9 y" t% @3 }/ v: P: s7 B% }& z$ Aappraise-receive
( ~8 U* y8 w3 B1 M! Z$ w;;
当前发生交易时收到的评价
5 C3 }2 c% W- x. K% _- Bappraise-time8 M: S& v  |9 m, @9 Y# [
;;
当前发生交易时的评价时间
* G) [; p% T  w5 t/ [local-reputation-now;;此次交易后相对于对方turtle的局部声誉7 q7 W; r2 w" e* k2 y. N: {5 u/ [
trade-times-total8 R7 K0 J* M+ ]
;;
与当前turtle的交易总次数" T* x" k: E" |# M/ ]
trade-money-total5 V( u6 P+ `8 x
;;
与当前turtle的交易总金额( U9 G- k- [& R
local-reputation" [. n. g6 y4 z3 N" X- |
global-reputation
) L' H. P9 X9 ^$ e. D9 k$ }credibility
; B/ _& b) o0 U1 ~;;
评价可信度,每次交易后都需要更新
' ]# Z( W/ D: r2 n* h; `credibility-all
, N( @: e( X3 Z1 p6 F;;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
  y) F* q! J: ^/ G: y) s2 ?
2 w8 H  ?" u8 O3 s' a;;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
0 S* {0 d! {1 P8 d' {credibility-one; C; H. M0 `% x; I5 P& n3 X- p
;;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- j7 g* _; \0 S; b; O( u! p
global-proportion
* ~* u" R! n( o9 x4 m& _customer0 E4 v- W' O  ?4 D
customer-no# p0 N8 S. D: q6 J
trust-ok
  P0 j+ f' r- `" p" C8 c0 Htrade-record-one-len;;trade-record-one的长度
* d$ Q& K1 x2 n; x]
2 J6 d5 `5 i! K/ }! g9 l& i7 B6 _% A1 U0 d! ]/ @
;;setup procedure( N- Q9 ^. ]( O6 A7 n$ o$ F
$ M9 m* j3 o! q
to setup
- [; f3 @. x% H3 O% D
* Q& `; h( X7 t; |4 |+ \ca
8 U& V  N$ c  ~6 j% I; s9 r
) A! }! `/ n( H
initialize-settings
$ g) Y) F/ u6 q; @, z0 @

& T$ d) X; m/ s. z$ i8 xcrt people [setup-turtles]

* K' H! \) G% J# T9 @, ~6 C0 ?
* t. \% o( Y8 C. N" ]reset-timer
8 m. Z/ R9 S- u& O/ R8 b6 x
4 X' K( ^; e# A$ v; H
poll-class
9 i' w6 o- ]( U9 d" R% J, w

: F7 v, M# U  H' p( N% d! Ksetup-plots
9 U+ f9 }& n3 T+ V
# D9 y, o+ ?! B* j& k/ Z
do-plots

1 F! R( p" V. b) _) J" Y0 `end
- Y) f) r3 l5 ~$ q; Q
/ i) u4 G- V2 n% c- Hto initialize-settings- e; N8 ?; g, }/ G
2 C) K' d9 d- x& h) W  W
set global-reputation-list []
% D# o( V6 T2 I

5 s; a5 x* d$ y- T5 i; uset credibility-list n-values people [0.5]
( S; R: q6 q1 \& u# E
  U- p1 v/ N" I' }. Z8 M
set honest-service 0

) ?- {( ^8 ^) ]' m
' e! `" ?7 J8 S; C# p% B/ ?3 rset unhonest-service 0

8 v; e- c+ t) v1 k. E+ c9 e8 I6 R( M
9 Q( a+ Z: @" }! U, `set oscillation 0

* e4 D0 N9 R) l) Q6 h* m" i0 ?" A0 p* i0 d! v' a" p
set rand-dynamic 0

3 y+ J8 D  w- g+ t' bend
9 c" {" p8 r2 y
2 E. B6 n/ ?( j8 Kto setup-turtles
% t  N% [* ?5 |# d; P% qset shape "person"1 m0 j# r1 }' c9 S7 A4 ?# J
setxy random-xcor random-ycor1 u% S; F; S/ t& Q- B1 ~' b
set trade-record-one []2 s2 `( F7 h. ^

4 B6 _% m2 Y3 N: {8 }4 P$ jset trade-record-all n-values people [(list (? + 1) 0 0)]   o; q$ s' u$ W( [) L, t- l
0 x. {5 z3 m, E" z! w* N
set trade-record-current []
# ~: \& V/ K7 \( R1 ^set credibility-receive []' k4 R  A" ^4 J0 I
set local-reputation 0.5) k, F, E2 \' M1 F, D& B; V8 U
set neighbor-total 0
8 q+ Z7 u  K$ H: P& b/ zset trade-times-total 0
% ?6 y% S" R6 N7 O3 Lset trade-money-total 0
. Y5 F' S" q* _+ |" e; H( Oset customer nobody
6 b# r4 K; ?& z% }set credibility-all n-values people [creat-credibility]
, g9 g7 L) I0 d7 p* o% bset credibility n-values people [-1]
% ~2 M9 _+ e, r# ?$ z8 l6 Lget-color( s2 i# o3 i6 `6 r

1 F* Q( ~8 B/ P! p. s* Uend
1 W1 {$ E' p" Y: x$ x
& \, ^% C- ?- V8 Q* _to-report creat-credibility
& Z2 {: t5 @' A1 dreport n-values people [0.5]6 N) [$ L# I8 y% V5 h" m3 N
end
) i  }9 `3 R1 Q+ ^+ B# z3 ~
6 L# X# k. I2 X0 @# ]( y7 dto setup-plots
  g. F8 ^& S3 T3 W( ~
' ]; K  @3 L! }set xmax 30
$ s6 B& F! q0 W( s6 E  M
  {5 @/ C1 a$ g- H
set ymax 1.0
' |6 X. s8 ?5 O# A

, Q2 R0 ~9 I! [; v5 s0 R$ j7 E: yclear-all-plots
5 c: s/ L+ r4 W  }8 K

/ t1 _' W5 _0 Zsetup-plot1
" y& ^) Q# _  ]9 E

2 ]  Y8 c! p% U6 l, h. Bsetup-plot2

( H2 o0 V  ^$ @; o6 I2 Z$ J2 i" ^- F0 G* X
setup-plot3

# V% _0 i" R/ q! }0 X9 Jend
$ \* @, h- P" {" o# ~- S' [) [6 w
;;run time procedures' d; u/ W; q% j0 {- @2 R6 b

& r! x) y9 f* \to go( H7 Q7 h0 D! L9 [* z
+ H' e9 U. x+ |; L, k5 r6 U
ask turtles [do-business]

: Z5 n( {. O  j) A  zend% U: f9 d+ y0 w4 }, K% I3 y

: g0 k+ I8 T: J; i) k  pto do-business
: X+ e2 ~# a% ]& b/ R4 C' J
8 V: p" Q2 S+ N' |6 A
* G! N$ e# Y$ i
rt random 360
0 e. H; x/ w) Q+ `6 @" X

: ]5 @" Q5 {! _. p, ?. _$ Cfd 1
2 j2 l: x7 [  q% d

! g: x3 S9 e  O3 N& Z+ a3 w! U- qifelse(other turtles-here != nobody)[

: S$ Y2 O9 b, N, V8 H+ z) [! |) C( h2 m: |8 b$ \: b
set customer one-of other turtles-here
- o( N5 d) n$ a" K& }# k  \) O
6 z6 Z9 e) {. a6 t) B
;; set [customer] of customer myself
( h" R# J/ t$ a

) J  G' B( _: a# t3 oset [trade-record-one] of self item (([who] of customer) - 1)
- d5 a# z0 V7 L& P+ a7 p[trade-record-all]of self7 t" O" J. E, e" w! k, N9 s
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

- p/ [8 f% A' `
7 n7 k. [. V7 ?* Oset [trade-record-one] of customer item (([who] of self) - 1)
3 j7 w' ?( d7 U6 j$ w2 F* I* g[trade-record-all]of customer

3 U* F* M( @6 B" c; G" }. f
' M& _8 n" [9 K; Sset [trade-record-one-len] of self length [trade-record-one] of self

4 _& b1 U! R; x. \; U; S" V  b3 |, l  |+ f8 V1 ]
set trade-record-current( list (timer) (random money-upper-limit))
# Z5 N2 c7 E. e9 \3 [& A, ^: i) p! M4 x

' A0 S9 _  R" c6 Q; o- a$ o4 kask self [do-trust]9 N1 r- Z7 f; e5 U
;;
先求ij的信任度
: z4 w. o- w* A9 _0 e1 ?6 @/ H" a0 P
if ([trust-ok] of self)* k4 W( Z# z$ Q. F
;;
根据ij的信任度来决定是否与j进行交易[
  [$ e+ U3 W9 N* p# ~ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself+ q  B7 y1 ^$ y0 W4 g
* q0 _% ]3 D7 D3 l
[

3 d& H0 W( y  O5 _3 u3 R$ t5 n+ `. x8 N2 j( s6 F. h" Q
do-trade
4 w; j* ]2 x# ?6 V7 }# t

+ U% q( K7 A8 ?) W9 G* X. Kupdate-credibility-ijl
  f( x, T4 |3 d" E% B: G7 s
7 G; e" |7 t) d1 E0 I
update-credibility-list
6 S! y1 Q6 P( l! _( i( p! N% D

2 i7 I$ u  k: S4 |2 f' U4 S! }4 N8 f# i9 _& e  V
update-global-reputation-list

) `( J6 R( P/ H5 |+ T
% e' q5 I5 T7 c% ~poll-class
0 U! Y' @9 j& ^& J& @

( @. @- `$ F( ~$ O( V: u6 |/ Oget-color

' z. {2 P4 @% p3 l3 I
- q; E- n8 x# U/ w]]
( u  K6 l6 A5 d/ g1 P
4 H; d- ^! S0 i$ {! ~# ^; };;
如果所得的信任度满足条件,则进行交易
9 j3 t5 r+ S' t2 L; a; q5 B" O0 j" E, S
[

/ r0 j+ h/ u8 x5 w  R3 h& ~$ V1 y' {3 l# `# t3 G0 I
rt random 360

/ T7 a4 A/ V, O1 s! U8 O
9 `# n& I& T$ }) l( U: kfd 1

' R- T- M5 h( C( B6 x, g7 l9 S+ {+ {% i( K6 K/ b
]

" R& _% \9 N& E' K# @* y: _* I' u" M+ a+ N$ v  M
end
, C, x, Q& B* d- T$ p, I' U

: [% I  e5 t# [1 a; }% ?4 l. dto do-trust
- R* ?1 \! g* wset trust-ok False
) l3 X" p$ c- l; B" M+ s  b4 O' b$ @! q4 `6 }# Y& I0 U% v

% y( {* ]/ Z" }1 w# ?let max-trade-times 0; @8 X' `8 M5 t. i# r: C! c
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]+ D/ E6 p$ O: x
let max-trade-money 0/ ~7 C2 q9 V1 X9 l
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
6 b/ ]" U- h* B6 J( e5 Jlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
" F" x4 Y, L7 n4 z. K( E
/ w8 m/ ?; M- i; h# ]  B

% l' l" K; l) c) [: Z) T, Eget-global-proportion1 U; g" c, H% R* C$ C' n8 D
let trust-value
! _6 d/ q& d* m* q( \  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)
/ V( N% j! A2 d3 D0 p) m! H
if(trust-value > trade-trust-value)
# \1 u" t- s' p, @, d9 Y2 c7 w[set trust-ok true]
! c2 ]" w. T" R* }7 Wend
8 P6 i; A, {# y% w. k% f5 y  e- T( y( f3 F
to get-global-proportion
* C/ g) ]' n- C1 b/ Difelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
% c9 W$ B4 T! x$ u$ y" e[set global-proportion 0]) R" f6 ~* S3 p- T& ]1 k% ?
[let i 0
3 U. e; ^7 H8 w# w# _( {8 nlet sum-money 0# I6 k! l7 B  {4 g
while[ i < people]
+ ?4 ~0 y7 W) d- g[3 E/ C1 H" R6 V4 s
if( length (item i
( y( X- R( l6 e% g[trade-record-all] of customer) > 3 )

+ H# U* L7 H3 e8 `1 I[
: r9 B  j: m+ q4 O( Y9 Qset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
3 p6 i6 c8 `  V1 m! l* M- B% Z. H], V: U3 E$ l  t$ M3 O
]
: L9 a8 O$ R& p- c4 zlet j 00 K- i# V: J& s7 M; _% `6 H
let note 0( w) N' M% ~8 s
while[ j < people]
; M0 g% w. [4 P* l- g. e* o[) n# V: V$ o5 y! I* P' l
if( length (item i
6 x+ Y9 J7 b  r4 ~[trade-record-all] of customer) > 3 )

8 T+ Y6 N1 A, U6 p$ H7 b0 @3 g/ N[( v! _. p1 s% g" _- b
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
1 G. E/ Z7 J8 U+ f[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
3 t, H  ^2 r% J6 g: y% ~4 z8 J[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]9 n% S5 e$ Z7 ^$ S3 H
]
( o! j0 @, L* G% B  I; C/ _) A% x]
" [6 k5 O/ b( i; x0 Uset global-proportion note. R* [6 _5 t$ I% w/ e. t1 d5 c
]' C" W8 U) e- j6 r5 c# w9 G; G
end! H0 a& K8 Q4 i& M' E
1 e3 g$ t/ n9 d7 }6 i/ v
to do-trade; a* B, a) z! k( Z& g
;;
这个过程实际上是给双方作出评价的过程
9 ]) P4 w9 {7 e! ]1 fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( v1 @0 s+ X) R+ Zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
% Q3 h+ \, s, E9 f0 J$ J# Z2 c7 eset trade-record-current lput(timer) trade-record-current8 j) _' e7 y9 Q" n" i, [- Z
;;
评价时间
8 |# h3 k. l+ [; I6 s$ l& a7 b5 gask myself [
7 e& l. `$ v7 mupdate-local-reputation
5 W" ^0 W4 ]7 f9 ~, aset trade-record-current lput([local-reputation] of myself) trade-record-current
7 C& w6 V" D, c1 y* L& l) R]2 @3 {- w, i, {
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
+ k" J4 R  f4 \3 L; O( H( m;;
将此次交易的记录加入到trade-record-one
3 e! @4 N# _- p- ?+ k4 rset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)& ]" F* N: Z  q* L) R/ A
let note (item 2 trade-record-current )1 U7 g& H8 P6 M
set trade-record-current) P& [) u% d' y- J
(replace-item 2 trade-record-current (item 3 trade-record-current))

- d" Z/ _, a1 Q7 P, ^5 ~4 P, O/ F% }  `set trade-record-current
, t- V8 g! x' ?' y(replace-item 3 trade-record-current note)
$ s# n1 f7 q' M( n( |* o# S
$ r' j1 V, ^% C, P  O( w7 ]

3 g* N- y5 r$ I) ]  dask customer [- T& j1 r  I- ?7 l
update-local-reputation0 W& q- Y' h9 b
set trade-record-current6 O' u9 z" ]) c% w
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
9 o0 z; ?" }/ N3 Z( x: k7 X
]) I+ v* H( n& [5 W) F: A4 R

) d# m& C8 r* [  L% i% q
3 M9 Q& U" k. j- [6 |$ |2 E
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
! ~2 M- g, W, I9 k. b0 q& v

) V. `4 N% |1 tset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))9 d+ p+ z; m7 \& |6 P# `
;;
将此次交易的记录加入到customertrade-record-all4 ^3 {( }2 D% z- |, M) Z' L, g4 K# r
end
" ]# b$ s1 J# ]+ _4 A( v/ D( o. I- e0 R
to update-local-reputation0 {% u  J3 d3 @; R& K( T
set [trade-record-one-len] of myself length [trade-record-one] of myself- u6 @' i- D0 s: o: z9 n: J% c' g

7 w& I+ ?. X6 J: b/ b# O( j: f& n2 }+ O/ D1 s! H; k6 |8 X
;;if [trade-record-one-len] of myself > 3

' o6 V4 ~6 L4 n! J! B3 Z% gupdate-neighbor-total  B9 I3 ], M* e- }- i/ o
;;
更新邻居节点的数目,在此进行) F) f' H0 z- L! q
let i 3
: T; A  r; O; ?" Dlet sum-time 08 l6 i. d  @% Q: C$ h
while[i < [trade-record-one-len] of myself]7 W' w8 x" X7 o9 W8 z; _5 H
[- N  }' S8 }- h$ c+ t8 c4 w  O
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )! O( a! e9 ?0 U7 c6 A, R
set i
3 R+ P3 y% W  d5 P/ _( V( i + 1)
% m9 j1 B% ~5 S: n. Y6 s
]
) i/ ]5 m& W1 U% [let j 38 z9 ^8 |4 i8 Z7 t
let sum-money 0. g& q6 b9 z) x0 x
while[j < [trade-record-one-len] of myself]
1 H! `' M- |, ?% Y! [. S7 H8 i0 a[8 J+ g6 h$ y% Y& a0 h1 s& 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)! D9 _4 q2 U7 }, S8 ~# i/ X+ |
set j7 r+ z3 r6 i( x
( j + 1)

( x5 h; ~. X7 k- g0 g]
$ q& X1 s" c) B/ plet k 35 E5 _7 D& ]  B. W: l$ k' V
let power 0/ P/ r7 w/ B" L
let local 0
2 ~. _4 W! p- M4 g3 x- N4 v6 Zwhile [k <[trade-record-one-len] of myself]
+ m1 F3 O. S3 x$ a[3 u6 L! A- v& [0 ^0 s
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)
1 ?/ _  Z* V6 z; S5 q7 P9 Eset k (k + 1)7 n# O$ }; h, }3 `3 A
]
2 I7 ]8 p: D; o, E! @- i5 Bset [local-reputation] of myself (local)" r: c1 i. X8 D7 e# D9 a: }
end
* p: b# Y3 y0 I' K7 J0 C( v* b0 B& X# l& x
to update-neighbor-total+ |4 X9 z. D" q6 B: k
! h' E4 n% n7 ?6 D: m8 C
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
1 z  x4 H3 z: a' l+ c5 i
6 t3 b5 M0 _# N( [; J6 J
* K) n5 w2 M, I* f( ]) Z' R/ U2 U" ?
end) R" j4 d$ w" M$ d: {8 f
0 N; |) S* ]/ ~, b% m9 X
to update-credibility-ijl
1 M( R- M. L% I( y0 Q- _+ w2 h9 _. r9 h) _" }
;;
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。
* m8 g5 p0 N6 i) Z; Clet l 0+ M% ?/ g& j+ z( R5 C/ C7 }
while[ l < people ]2 F6 c( }& f; r+ n0 J0 ]3 J
;;
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
* c1 f: M$ `8 _" ^% B: M1 K[0 y9 `) O- m' I5 u- `$ d9 f
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)- N2 `- s8 T5 {5 ~; I: q
if (trade-record-one-j-l-len > 3)
. Y" h( f  R% M1 A[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/ n' V8 ]+ q, P) G5 Q
let i 39 a9 H* ~  B& w3 K3 k
let sum-time 0% V* c' {9 y" U6 n( r: _
while[i < trade-record-one-len]
3 c, a3 d" T( |$ K[& H+ e9 q5 m9 B2 {; Q
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )8 l. N, u$ c8 a) `4 E1 o: {/ V+ v4 p
set i
# C% x2 R# g' U$ M7 U) ^1 O( i + 1)

! e) O$ C, C! {- ?]$ ^( l5 p  @2 ^: x& N; |/ n. Z
let credibility-i-j-l 0
5 \% E) f, y3 F;;i
评价(jjl的评价)
4 S( J9 R- k8 A6 ?" J' tlet j 3( c; H/ R/ c  h2 i
let k 4
- T+ {: ^' ^4 G6 r1 w( E# Lwhile[j < trade-record-one-len]8 p7 s: O- Q! ~* ~
[
' l$ l/ V# z5 twhile [((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; V8 D# q( q5 ?/ v1 Q) w& L
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)" _' j& n6 D5 S1 Q- G
set j6 ]3 C+ b7 B9 e5 ?. v, H
( j + 1)

% O, N7 \+ x  T$ m" f, g( V]
$ a5 ]& ?* [2 h: D7 V$ X9 T( @9 Rset [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 ))
) S* }; @) V3 e- X7 \7 \8 C$ ~- c" t* M
( O5 e6 e( C* _
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))% q' y7 [6 O6 X- U4 I) L( ?, L
;;
及时更新il的评价质量的评价
. A' e5 _: x5 v$ I( ~$ Mset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
+ t) @7 V2 S% w& }set l (l + 1)  K" f/ G1 o- ~
]
# j& g% q' |6 pend3 l0 l" f/ B+ g

) q0 o/ W1 l, O2 _3 x, f) l, cto update-credibility-list% K  q# U+ S3 T* W) h
let i 00 ^+ I% C/ b7 F0 M8 C7 p
while[i < people]1 [: V6 P1 u$ ~. e
[7 k7 [$ G% @& d" K8 o4 ]" f
let j 0( Z/ c, `: e: O9 Y* y& X5 V, Q5 O
let note 04 |7 G7 c! T" g+ P* R
let k 0
+ T# X& e7 W6 g7 V;;
计作出过评价的邻居节点的数目. L' R$ q# t& ^( Q4 o/ y
while[j < people]
1 K2 W8 g, I* i7 C[
" y$ B3 G. D7 E. b4 {if (item j( [credibility] of turtle (i + 1)) != -1)
1 G& x1 x; D2 ~; b! x;;
判断是否给本turtle的评价质量做出过评价的节点$ b# f3 l0 ?* _
[set note (note + item j ([credibility]of turtle (i + 1))); P$ |8 F) V; Q) w" g: q0 T
;;*(exp (-(people - 2)))/(people - 2))]

; M; ]5 w# l& A8 A7 N  c. Zset k (k + 1)/ V. A$ k3 Y9 w7 }" d! v8 P- D
]
2 M$ k% e" C+ b: Eset j (j + 1)
/ _* m2 d0 v; i( B], z1 [( a5 ]+ c- r5 O( J- c# w
set note (note *(exp (- (1 / k)))/ k)# q7 `% D* `/ k3 D3 |
set credibility-list (replace-item i credibility-list note)" k" r" ^# i' a1 Y- m
set i (i + 1)# |) A' H8 x0 [4 _- F2 ^6 E
]
! |: c0 ?7 [1 |( K& X+ ?; bend# v) K! L& d, v4 c8 q( s
% \( N9 B6 t8 u5 M' E2 w% ^
to update-global-reputation-list4 n; i; `; K7 v7 e
let j 0
9 s; p* j8 S- E! ?; y( X+ V8 mwhile[j < people]* d. m+ I# M/ F% A
[
; p( n3 P: d3 f# f, G+ f7 `let new 0
: A* o: `8 k- T  P' Z6 \;;
暂存新的一个全局声誉
6 f% z# x' }/ F% O2 u5 ilet i 0
8 D7 B& `) q% g! s# W' Elet sum-money 0
* x  _. S1 b$ `# tlet credibility-money 04 i2 y' t1 u3 ~8 @* y. i$ z+ N
while [i < people]! r& k4 x' U  h8 G2 ?
[
# G- }( \+ F: C3 ~% H9 vset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))  n/ h- O% h3 m& z
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
2 O9 n+ @6 ^3 O  H" sset i (i + 1)% g4 a# S! e/ T9 U5 d
]
* G5 ^  m5 n9 Q$ h) M- F. E3 G' |! Klet k 00 D/ S) ^: @' j  q, F* v- x
let new1 0
( G! _* T7 x* z6 p% Awhile [k < people]6 y; [" d) C+ N, E' I$ s7 {  E
[8 s, }3 U7 e7 z7 ~3 t5 Q8 n% u" @
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)- b+ k  d! G- k$ _
set k (k + 1)1 x- E' e. n) |, A: v
]1 j- o) w: @* [# c# f$ b
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
1 @7 t! l; k* z. uset global-reputation-list (replace-item j global-reputation-list new)
7 T5 ~# s/ o6 X) h3 \. ^set j (j + 1), [9 i% h$ @0 S! e; A
]- X+ T! ]$ R! H- H8 V
end% {: M1 x( X7 ?+ l

. d  n5 @! r5 ~* i, t8 G" n# j4 a- L% p# B% {' P1 E3 v

" T8 R1 `9 e( f! M! E/ [8 ~to get-color4 S. K; L( O' j
$ O5 n5 }+ S: ~1 s! G6 }! R
set color blue
" F) u/ S8 p! u6 Y6 z" C7 I  F
end2 [# C" w8 @$ F. U

5 M, J) {/ g+ T1 fto poll-class0 [" Z- n8 X7 Z
end
9 L# K) H8 ]1 E' C  I
" E- r! i- t4 A; h) u2 Zto setup-plot1+ |5 ^( Y; x5 n

2 B2 `& d3 y) O' L5 Pset-current-plot "Trends-of-Local-reputation"
: V) T/ X0 T+ U2 F9 x0 t

; R/ K& J" q2 f, ?% T5 C) kset-plot-x-range 0 xmax
5 o2 D) i4 B/ z; R6 v

# }- F, R( H: V8 uset-plot-y-range 0.0 ymax

3 r, Y0 ^1 e% x* |* m9 J" Fend
$ Q6 N1 X. v$ d3 `, N  o, c  L, j
3 I* G$ W* P  |; O+ [$ y! qto setup-plot22 i- p+ ]& N: W' a/ y& v2 m
# D' |8 E' F  J1 Z2 ~% W* W3 U
set-current-plot "Trends-of-global-reputation"
4 b5 U9 J, E4 _' Q2 u1 v2 x

" c9 g  W, W2 ~% O3 x" nset-plot-x-range 0 xmax

; o0 t& p8 B" F& C4 B( ^) d+ I! T6 Y
set-plot-y-range 0.0 ymax

/ M8 S( G- Q6 t$ Fend
% h9 d( y8 K) C7 y# _5 T3 M* S8 C: \" ^
to setup-plot3
: r1 _; k) B4 d6 N1 ]% `& C0 j' N+ s* c* R7 |: k) P1 D
set-current-plot "Trends-of-credibility"

/ u. B- K8 l2 y, h" T1 n3 u5 N2 T) z- @  U2 B8 {
set-plot-x-range 0 xmax

0 ?3 S& S! j& m/ @" }, I' U
! i; F- k/ s; x# D/ Sset-plot-y-range 0.0 ymax
4 z& H: @& W: c6 [( L; E
end
  }/ j; r, W. L" y% f0 t* B, a$ l/ g$ C, g. `( T1 ?
to do-plots0 N6 |2 Z) |8 O
set-current-plot "Trends-of-Local-reputation"/ v1 l  M/ S6 H! q
set-current-plot-pen "Honest service"
0 B$ x/ N+ }( Z9 ~0 c$ q( \end+ \- {) y- u, B# b& L/ P
- n3 b$ t) g) I" W
[ 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.5 {. _7 t9 [3 o& a3 {
( u) u, V  A- k) F- n2 h: k
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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