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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:1 O4 j1 `4 M2 D/ a; t  S( g
to do-business ; c( }# M8 F* e; d9 v% I
rt random 360% U! r% L2 z0 _' d% e
fd 1
# b1 |- p4 z, |: A% R  n ifelse(other turtles-here != nobody)[* U# F4 x5 J* H
   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 c4 ^% }- ^! b0 P' I% w   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
% f+ Y; y! q3 t- u" ^   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer! A' }& ^/ r- L
   set [trade-record-one-len] of self length [trade-record-one] of self
. D6 `) g# g7 ?# y   set trade-record-current( list (timer) (random money-upper-limit))
3 G, V4 w! b( W, D7 g! v$ X; M+ y9 i4 b. J6 A
问题的提示如下:& `( @, p1 i. ?# h) v5 v( A9 d4 p

& B5 _# t6 A, s# C% G6 q4 E2 t0 Lerror while turtle 50 running OF in procedure DO-BUSINESS1 Z' T9 o/ e; M( R7 }: q
  called by procedure GO
" Y6 S( u: E1 s1 i, jOF expected input to be a turtle agentset or turtle but got NOBODY instead.0 I4 F6 F0 l/ P' Z9 F
(halted running of go)5 P" e) K( X) L# e4 o- v$ }

# {5 @% j( g$ |0 F% g# ~$ x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~~: A% }* `8 i' t4 `
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
" m' g  x2 O6 c% Rglobals[
1 r" i2 @6 w7 h0 q: m/ g& bxmax
! U4 s3 s- n+ `  r" [9 Oymax
; d) U0 g: T4 n4 yglobal-reputation-list
6 h' E! l2 j4 C& E+ r
/ b  c- E; d6 j* \' `' l9 K. e;;
每一个turtle的全局声誉都存在此LIST1 V: r- @5 D( k: }, ?4 S2 m
credibility-list
6 E9 ^8 ]/ O7 B" H, w7 g;;
每一个turtle的评价可信度- R( f: x9 Q# ^4 e: h5 Q) T
honest-service0 X5 n3 }. D- Q) @* Q
unhonest-service7 C7 O* `; u, l& o0 \
oscillation. A, E& D1 v1 R: X3 ^* O( R
rand-dynamic
; W  Z1 c9 N, f# w* m- Z: U% {  m]
) }' e. ]0 r. Q0 M/ t/ B/ Y3 ?! `1 K" v8 @  b4 b
turtles-own[3 _1 K+ B3 E5 a( R- O
trade-record-all! @( _* u$ u4 ~& ?7 k. a) S3 @" U
;;a list of lists,
trade-record-one组成
# O8 `/ \/ |. ^  ]% Dtrade-record-one/ T# ~2 @+ }. ^  Y* q# f! J% ~) f
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
9 a3 ?) `2 L- A8 l" v) k, U9 w) _% W% Q& ?# n4 q7 f
;;[
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]]
6 |3 L0 q& l' 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]
! J0 P: w- h( e+ Q# N2 \# ]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" K; _% O$ m2 E& O5 a: W
neighbor-total
0 k  L- S8 ^% ~. V  U5 L;;
记录该turtle的邻居节点的数目2 {9 _) D  Z' z1 Z
trade-time! M* {# u3 f+ P
;;
当前发生交易的turtle的交易时间3 X* }% J# ]( X- O! z5 t( r; V
appraise-give
2 ]8 M" n( [0 F;;
当前发生交易时给出的评价
0 p1 m) @5 |; @  M! h. Z0 ^+ uappraise-receive# [) d, h8 S* t5 ?1 y: p6 H# V
;;
当前发生交易时收到的评价  Y; M0 w7 I5 `; B! ], j, Y- k
appraise-time
5 Y( }9 g1 P, t5 ?& P2 d;;
当前发生交易时的评价时间
. v0 r/ V% L! W/ \local-reputation-now;;此次交易后相对于对方turtle的局部声誉: U2 @- u0 O4 `& ]
trade-times-total4 S6 }& f2 R. _1 L8 U+ O, O
;;
与当前turtle的交易总次数
1 F  A7 o) x/ p" M# i; c" X$ Ntrade-money-total
2 m, F' ^% r; Q( n$ E: K6 w;;
与当前turtle的交易总金额
; P: w6 S+ [3 mlocal-reputation
4 @5 z# ^6 B+ F7 `- \; p* T4 Mglobal-reputation
& L2 ]* R! H- [credibility
. c4 i  Q1 R3 F6 z4 P0 P;;
评价可信度,每次交易后都需要更新% U4 \. z' k. b, [/ y
credibility-all
' }1 U% I) E& u& B4 k;;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
  J7 k  x& e  n/ n$ F  N, u
/ ?6 M# K* b+ v/ t8 {8 C, t;;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
1 g; `6 G2 [( Z* dcredibility-one3 u) a4 y" k: f2 g" ]. j1 c
;;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+ J3 [3 ]* a
global-proportion/ w+ S8 S4 m2 t6 j! Q  {, O  y
customer
# n6 a2 }1 t+ xcustomer-no
- @3 m* W6 ^) U2 e8 mtrust-ok  n. [. I* f6 L, Y, O
trade-record-one-len;;trade-record-one的长度9 U1 A7 M# d6 i7 |) R! m- l
]
, {) o' V0 W7 H$ o  S/ E, e: H. P) b* O
;;setup procedure
6 j" i% s0 v4 e! m- ]! g/ f- Q' ~+ z0 q
to setup
/ w9 w' \( j& `* p8 q. q+ |, P+ Z5 R- y  [3 }3 g/ a8 e
ca

9 z8 b6 V$ y0 K; X; w) q
% O0 Q  b* |! g" g5 r6 cinitialize-settings

2 ^5 K$ Y4 [8 T: ~/ l9 G
( E# O6 Q7 h$ [crt people [setup-turtles]
: \" W* _8 K+ i: ]8 [1 i
0 U3 c$ }! o6 b( r
reset-timer

" k  W; T3 ?3 j% U- A, ]! t
6 [; Y/ e' s1 y6 ]poll-class

) k3 \# _/ H5 N$ Y. }5 `4 P% L- Y
) T0 C6 g* L+ X& g4 {% O2 osetup-plots

8 b( K% H& Q$ Z8 X0 u  p% N6 S  N) w- r7 D
do-plots

" i% A( `/ k# O. J& z- G& iend
6 M) m% @; _& U" y" s* a2 t- F. ?# A# f3 x/ Y4 `! Z
to initialize-settings
; X- P. K, J! Y
& }+ z! x- f, y8 J  |% m9 pset global-reputation-list []
! _7 o& v; w9 y$ I/ @3 m: I
( V7 S) U# f9 {( M; X/ B
set credibility-list n-values people [0.5]

, I! ^% `: A, j8 J$ U7 I$ w! V* e' @. B, ^" l4 J, L! X  _' t
set honest-service 0
5 G( x2 v8 }  V6 u2 E

3 S% f4 p4 j1 q! lset unhonest-service 0

( s3 T7 Y  p1 b) U! O) _' ]# C; E. d! f# [
set oscillation 0

( F1 N/ E& F- U- p/ E7 }+ l( Y9 y- O$ g4 [
set rand-dynamic 0

5 r# {% C6 C/ Y( t1 qend( ~7 M$ p) {$ t' p

% [; v4 E1 a8 b, lto setup-turtles 7 _3 H3 V) n# E2 l' a+ |* x/ k
set shape "person"
% u- j7 F/ k$ e  h; Y' k% asetxy random-xcor random-ycor/ q# q6 ]) A; Z4 Y7 b$ R
set trade-record-one []
4 _% ]+ h% s$ e" L
. J) K% V' ^' {! y& z
set trade-record-all n-values people [(list (? + 1) 0 0)]
# Y3 U* k; Q. L' Z8 S
' j7 q! z& D; Y
set trade-record-current []6 T9 r  t9 u$ x6 v
set credibility-receive []. u4 w/ L* C+ B1 K+ Z0 [, A8 J
set local-reputation 0.5
) s7 X8 l7 I$ ~) B5 |( L; u5 C+ iset neighbor-total 0
4 \5 t, [  m/ p7 p. J1 B  mset trade-times-total 0* @5 l; J: h# C8 }( l1 D8 {! s
set trade-money-total 0
- r5 h! U$ j# Z0 s+ H- Cset customer nobody( h/ `" v3 k/ c3 o1 Y, Y. D
set credibility-all n-values people [creat-credibility]
; ]0 f- h6 t( T4 jset credibility n-values people [-1]+ B; S% l2 v+ }( E5 v7 D4 K5 x
get-color
1 U6 J6 X6 h( j' v
) G) T) Q5 a# S! o# D
end9 V$ k; l" g- p  y
& `/ E' `+ y5 z
to-report creat-credibility
8 `6 I+ r. \" r: L; U( areport n-values people [0.5]! ^4 k0 h0 p1 g
end$ i0 p; l. [) C/ Q7 v

  b& R  C' C6 P+ k' `/ Eto setup-plots
# w" a$ O2 m  J& z1 x
' {1 `5 u7 C2 p8 T+ s/ wset xmax 30

" U/ @% @* c$ X" ]3 Z. ?
% p+ w6 r! J2 Q3 V0 vset ymax 1.0

" Q. y! j- t  I* s
$ S9 `7 ]( p  P3 j  E0 W2 iclear-all-plots

: s5 ]  ~( K: ?! Q- q
3 M( h7 L6 F# G) v/ wsetup-plot1
! r$ Y* _1 ~' |& W
( d8 i, y& F3 D( s/ K, {) k' |
setup-plot2

* r( v- v' w: Q/ O3 w3 t" D
9 ]  u) q! S$ a1 X5 O/ \+ Jsetup-plot3
( a  W: z5 Y, I! m
end6 t2 Z( P- Q+ p! J8 D8 E6 e3 `( D# c

$ R7 `5 R, {1 n;;run time procedures
0 i1 E/ U* E- V4 m; `6 }% G) L! |0 ~! E# x  I$ U
to go0 J( a' t0 N; w; b, Z

2 k% d% g8 p) m* o! \5 J8 ~ask turtles [do-business]

( E3 z) G3 C- `. ?; Pend2 R: s. Y  B! {3 c/ |9 N! @

$ S+ u! {6 O* I* [to do-business ; I% }% s# f4 h

* J7 V2 K5 X3 F, B) Q2 O
; I; g0 l3 a; s$ ~: n8 krt random 360

  r5 o# m8 G2 t* Q# t5 U. E  n
7 |0 M4 _+ _. E8 q" N. y7 {fd 1

: X( E8 h. |4 _# V4 A$ N& D- u7 H  I
ifelse(other turtles-here != nobody)[

) u% A8 d& `$ T# q! }1 S4 F* Q- T/ P2 W' P; s. r( w
set customer one-of other turtles-here
) F1 j3 F# T/ |& u
6 p; R3 i% J; J/ C% t7 H
;; set [customer] of customer myself
1 [. q! j  X+ F& X
& }2 m% y; V# `  z3 y$ U6 H! |* S
set [trade-record-one] of self item (([who] of customer) - 1)7 k8 n& V3 W6 F1 L4 i6 d
[trade-record-all]of self. M' O2 A7 l9 e# y/ f
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
1 b2 D- l  a5 K) g7 @8 B

  ^- h1 W$ z% c5 Mset [trade-record-one] of customer item (([who] of self) - 1)- J, d/ A& s0 m5 u1 S" j
[trade-record-all]of customer
, R3 d, j  F& P6 Y& |& d) c- E1 n
. R3 G: {' D+ b* ?. x* V, `) _
set [trade-record-one-len] of self length [trade-record-one] of self

, w0 U  W4 K' W, L, v
6 f" n  ]  q# E5 c9 }2 r5 `, Nset trade-record-current( list (timer) (random money-upper-limit))
( M- A) [: q2 Q* Q2 u) M! P/ p
5 v' {, [% ]3 u0 U9 _
ask self [do-trust]) Z& t4 P  `) J+ j3 ~1 T- G
;;
先求ij的信任度$ J2 P/ O$ W! I. Z1 ]& b; X
+ e. d" `- s, G  t1 o: e4 S+ |
if ([trust-ok] of self)9 p5 Y9 C9 K: Y
;;
根据ij的信任度来决定是否与j进行交易[
/ r4 h7 `, K, G4 t3 jask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
. x* V) `  e6 k- y; m
7 _+ Z! f/ b+ D( m- n[
# u; i) Z0 e6 a/ E0 v4 c
* D! V4 x( s7 T$ R% ?8 a* r- Z
do-trade
4 g0 Y* P  Q4 n* B3 s+ c# q

3 ^& C7 H5 j' H! l% [* Dupdate-credibility-ijl

. H) w9 f8 x* S7 C% I. O1 P& T2 m
update-credibility-list7 x( ?, Y, q( ?6 F9 \2 X

" j  M: q/ Q) b
4 G. f$ P8 \0 k$ }6 ~update-global-reputation-list
5 m# O! ?1 P3 S) p4 X; Q) ?% t& I- _2 R

9 Z7 G; [7 ?7 U# Vpoll-class
3 V1 j. j) V+ t7 F0 P, r8 H

: B9 I0 ?7 _1 z$ [4 B, iget-color

5 U! y' k- q" ^2 `7 m! ~. \0 C7 Y, h4 L2 k
]]
- |+ ]* X) H* S5 W0 ]' ~9 k7 s5 |/ d3 Q- g
;;
如果所得的信任度满足条件,则进行交易
, s- ^$ ~& G% o1 o0 x4 J
$ L7 D- F! w6 R[
1 R9 z# _3 ^8 K# J( [
4 S1 N8 Q/ y& o" ^2 S8 F
rt random 360

3 b- ~' H1 l+ s0 y; p+ w8 m! N
( w; P5 C+ f$ Y/ Ifd 1
) K8 o& ], h* A: Z1 d+ P

/ S/ Z3 p+ L* Z]

! G  Q( b) U; |- E% P
& ~: [- G! D( x3 ^% d* y/ r/ send
' q. I/ B1 l  n! g
/ Q7 ~/ o* E  H* y; {5 u8 ~$ @
to do-trust 4 @* P$ {" _# m& Z. O6 k
set trust-ok False
; [8 X, c9 B% _( {  \8 E! K/ a6 m: H* T/ H8 Z

% b8 \1 L7 r# n3 slet max-trade-times 0; G8 F0 |, c: ^) }* I
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]4 f( p9 @0 w/ R! S6 o
let max-trade-money 0" k# M- T$ A4 b+ g9 C5 x: m# @# c
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]" A& [5 J7 M, i3 e
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
3 D/ F6 t, [1 j# `( ?$ Z
- A" Q1 ~  b; z! w; N

( C' ]; @. T. B% s+ J1 yget-global-proportion
) n! n4 j  ?/ w: d: Ulet trust-value
$ y" }+ N( S# h# Q3 M. |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)

+ p, z2 p! h8 q! [, O4 Z/ C+ J( Vif(trust-value > trade-trust-value)$ N5 k0 D+ p0 N# s
[set trust-ok true]
6 [0 c& ~$ K. _, Z4 `3 z5 }end
5 S" `: ]+ E/ f- H! u8 x: y5 l5 `* S; Y: }# R1 a# F
to get-global-proportion
) m7 I2 l1 b( y! `* Pifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
" \$ I6 k% S' V' l: {[set global-proportion 0]
6 I  o; D  Z. ?0 z5 S9 z1 V[let i 0
% t+ B2 `2 X& B9 B! _  U. m2 Xlet sum-money 0
0 b+ e2 i* L& ^. z) w2 m2 fwhile[ i < people]
# Q7 |0 ^: M# t- J' q  c[6 X+ z: Y( h2 y. ]$ q. G
if( length (item i7 T7 Q# \/ ^) A
[trade-record-all] of customer) > 3 )
) h) [; p7 S: X  }
[
' B; K  O0 s9 d3 L! K5 s+ ~1 Qset sum-money (sum-money + item 2(item i [trade-record-all] of myself))0 u' Z. Y3 U0 _2 Y
]
( N, F& E  y- f! s  ~]9 j/ y; F  @+ G% @6 P! u$ k
let j 0
4 Y# k. c2 K$ a! a+ o3 }. f9 U" Jlet note 0+ ]/ Q/ o& S: o1 `; E
while[ j < people]' n9 e" w! |2 Z: [
[, E: q9 B# v/ L- z" i
if( length (item i) w3 A  D6 s$ ?# k! G- N
[trade-record-all] of customer) > 3 )

: k) z' f% @+ T' G" X3 h6 }[- i* D/ @) E  w4 s7 C" `7 T% c( o, w
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)& d/ f: v! j( ~$ T
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
+ \% w8 t. P3 L" l$ s  X9 t+ u6 b4 a[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
' ]% q" Y- u/ I% @, E, |& Y]
# v! g8 S* r) U]
3 j- Q/ B9 H& M& Q' \. Q  Gset global-proportion note" J! `6 S5 [% _" n* H8 K7 w
]
, z) E, T: F2 g& mend( |. w* Q# p0 e; d9 q* b4 O6 b
$ c- c! `  X$ h' a" l
to do-trade
& A6 M1 @! H' @. {  [" m5 d;;
这个过程实际上是给双方作出评价的过程) V0 k0 y) ?! H; s
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价9 k/ J! C) q/ z- C( Z: X
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价& R2 {5 ]% @* a" @3 R( k
set trade-record-current lput(timer) trade-record-current
5 f" N5 L2 T' h% p1 O;;
评价时间# s+ s( R" r  x, U. {1 Z
ask myself [* i3 _4 I, V! J2 ^7 O
update-local-reputation9 ~7 Q! p  y8 k4 R) w" @
set trade-record-current lput([local-reputation] of myself) trade-record-current
+ _) q4 a& D1 G1 G( k]. S: g+ d3 G4 {) D) A1 |1 v7 M$ Y
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
2 l$ T6 t" K. h  m; P  r;;
将此次交易的记录加入到trade-record-one
% z0 N7 s& f  y4 D  {set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)4 S, e/ d7 k5 L
let note (item 2 trade-record-current )
& i4 W3 {* ~4 T& g5 l0 Cset trade-record-current
( z: C. G6 [9 W3 Q6 k) s/ l; i! G(replace-item 2 trade-record-current (item 3 trade-record-current))
% ?7 u0 [2 m+ x9 q' {" |
set trade-record-current
( V  l$ h# x, W, c& ]+ e(replace-item 3 trade-record-current note)
3 J) l# G/ h$ E) `0 h5 y
6 [' n7 V3 L( L4 u) P! }3 Y
" w- ^; B! L0 X) o  v! f
ask customer [8 n/ g& y7 J2 N3 J
update-local-reputation! F- {) a5 j; s+ A* A
set trade-record-current
& A; j. G9 u! P) m9 \(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
. F0 f$ Z( l9 ]+ x$ w
]7 w1 g6 D! j# G2 A# R

  p( O2 w* [1 n+ x' l" f; B

: E7 }: T6 a6 h$ F) I! o- g/ @+ `set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
6 }! P5 Z6 Q9 t4 p" J
  _3 O8 @: d% F4 L; a+ I! S3 A
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))( k3 R$ M- l& i- |% s
;;
将此次交易的记录加入到customertrade-record-all% j. w2 `3 O( w; u8 v$ O
end0 h7 F: ?0 H* _
1 n" Y5 k4 V1 B% G5 @
to update-local-reputation8 N8 y4 x2 ~4 {- U9 F+ R; _. |# ~
set [trade-record-one-len] of myself length [trade-record-one] of myself8 l, ]1 z+ \% T" o

& X7 I# B$ k! ~  u" G; }7 o7 u, Q$ [
;;if [trade-record-one-len] of myself > 3
+ K1 o5 _3 e; D: l. y! \
update-neighbor-total
- L+ Z. p$ g5 m; r9 Z;;
更新邻居节点的数目,在此进行
; F9 i; q# P4 zlet i 3- X3 ?. O8 S! x) j: T1 t+ C( K
let sum-time 09 H! ?' E6 b( J1 r6 v! R
while[i < [trade-record-one-len] of myself]$ L8 @! n3 O9 |: Y  |
[
- X: g: R. n4 T: m' pset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )% I7 l2 ?( S$ [) k5 v: n% i& H
set i
2 X8 y( F3 p# F* t* e# l( i + 1)
6 ^( G7 _- W3 r, b" ]
]
" _9 X) y: F% j- ~) \  r/ Hlet j 3, W$ U; v& C. \7 A& A3 y- L: k# o1 B
let sum-money 0: k0 E- r5 g. F' @" s5 b
while[j < [trade-record-one-len] of myself]5 Y: |1 H1 n0 Y& k; h- ^3 o
[
" \- D% x( q/ K5 l1 h! Cset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
4 y  ^3 I8 z$ v, ]" Pset j& ^$ f/ j8 T1 W& {. ?. h) q
( j + 1)

4 G% o+ j$ Y3 U3 j- k]
8 G$ w) P# X4 S6 ]6 Klet k 3
4 r0 D- A5 c5 W3 }8 F4 h5 M" Q3 K. [let power 0
- N$ V! g2 B, C+ H" y1 p" c2 Ilet local 0
* `1 t! j  ~. ~% xwhile [k <[trade-record-one-len] of myself]
7 q( p8 X8 S( j) \- t[* S  d) ?+ H0 ?* F
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)
& z* f: W+ F  w. R! U; C1 Y5 y( ~set k (k + 1)5 Q9 t2 l& c# T6 C2 C' ]* {
]3 v4 z0 b' D  D6 l
set [local-reputation] of myself (local)
" c, v& j( X5 x! t$ J8 jend
* l+ R6 U3 e, R* B$ R/ }% j- A6 A/ y1 [5 }" c4 r
to update-neighbor-total
+ n3 K# ]: ]3 N1 H: }9 ?* {& c3 U- i% N9 b; r% J1 B- N& ]( ]* ]; ~
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]5 J. c" O. V8 r1 u" r
3 n  U: d0 [5 c! A

9 A# T: a/ n% ?6 z9 |2 Wend
8 w# s" a& L# j5 r
2 X$ G$ P1 J# S; K# N9 }7 g8 qto update-credibility-ijl 5 G0 S: [/ |( W( I( ]/ `

! n9 ^) @4 y9 \1 p7 b5 I;;
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。. C. a+ o, W+ E# l/ M: X8 a2 e* Y0 t
let l 0
  j  g& Z4 n' L- ?) Hwhile[ l < people ]
! l/ b  S* V" _6 G$ x. G;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价* q- [( M* U* b" I# }5 d1 V/ t+ _6 j
[2 Y1 y$ t8 `$ O+ k9 {& v
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
' q5 l- q+ \( d& q; Aif (trade-record-one-j-l-len > 3)) j, y/ J& g# P5 E
[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; k5 _+ z0 V2 a, f) d
let i 3- z- E8 o& P0 m- a; L2 h4 U
let sum-time 0* v" N7 J9 A- g( v. j
while[i < trade-record-one-len]$ M. G) A: z. [6 h" h
[) w* O& f) S+ K# Z% T4 |/ @
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
' ?/ }# K. x) `, Y$ {* H4 Fset i
. H# |5 F3 t# E- n; o% U- u( i + 1)

* i2 _5 J+ s9 Y9 ]]! n9 K! D. K: k3 `# ?$ J
let credibility-i-j-l 0* Y" q2 F8 {* Z1 x, q# I# S0 v
;;i
评价(jjl的评价)* r; d7 k/ m- y2 [: L8 u' ]
let j 3" [. q# o' \" a  r+ W
let k 4
7 X" `! ]# M! Z" hwhile[j < trade-record-one-len]/ N& @: s' e! g4 O# a8 V
[9 [9 H, b: m: v  v$ R2 c
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
% a/ W1 j. D1 |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)7 @7 E& X* G8 K9 z1 G7 x  ^* z7 H
set j
6 K4 D( m9 _5 d  v, ~2 E( j + 1)
& b+ N! h% X( Y5 c
]( }1 Y$ {/ M2 F
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 ))
* H1 \5 f. n" j4 K2 t& Y* o' M( K& B
0 b0 X8 d2 M' w2 v9 K$ A0 T9 b
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)); d  J/ q! V1 D" D
;;
及时更新il的评价质量的评价
9 {# v2 Q* I4 b3 b5 yset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
9 m& q' j; u. I# E0 A7 `0 Pset l (l + 1)# \1 r' g. G3 Y+ x/ A
]
8 L& z4 }3 N* I3 z6 ]1 Y3 I- i6 k0 A# iend8 L7 u9 g7 N' L) U: G% [- P3 u6 y

- U1 f2 N0 G/ T! w7 C4 E0 K$ dto update-credibility-list
1 Q- x+ x1 n( T) `let i 0
- q8 y6 n: t& X! g* t) ?while[i < people]. W; ]& `4 y5 U' [6 K
[! R0 U& }/ R! c; v" }- s
let j 0  [4 _! F5 m- w/ P2 R
let note 0# {. O- G# `- _
let k 0
% r8 r2 E7 w- B6 P3 @;;
计作出过评价的邻居节点的数目
0 ^3 c" f) b, U: gwhile[j < people]
" Q$ M' [2 z, H/ x[& [: R0 Z" S5 n0 V
if (item j( [credibility] of turtle (i + 1)) != -1)
/ G, b! A. j% h0 q& N;;
判断是否给本turtle的评价质量做出过评价的节点
% G3 d' l& G3 y0 `5 }$ q[set note (note + item j ([credibility]of turtle (i + 1)))7 X1 L9 `! p1 s, y* ]; {
;;*(exp (-(people - 2)))/(people - 2))]
' r7 j3 h9 H) G. W
set k (k + 1)6 L# l+ b4 d  V3 o
]
$ C: D; ?8 g  d, P6 vset j (j + 1)
1 C6 O1 u7 _( d/ S) e8 E+ m/ d4 s]
. e, V, k1 B+ w" O7 M4 z" _3 v% Fset note (note *(exp (- (1 / k)))/ k)0 c% ~" \# w; w) a# h
set credibility-list (replace-item i credibility-list note)
1 x4 T% q7 k4 o, @set i (i + 1); x' \+ P# H0 S5 {7 u" r
]
" _- R8 c4 q- |1 zend& S' x# l' K" x' c* }% n6 X1 H
8 s% r- f! l7 T% ]4 W
to update-global-reputation-list; A/ D0 o$ |# d7 b
let j 0; B# M' |5 T- @
while[j < people]
& x7 m  I+ X7 }. \. Y[& v0 s9 \+ ^6 ~" x+ J% R# y4 u
let new 0
8 s! I/ y  ~2 a) n, U;;
暂存新的一个全局声誉3 _# P$ x4 b( I  v2 ^- A
let i 0
7 V7 h2 m6 Q/ c+ Elet sum-money 0
( K- K: N6 ?/ c" zlet credibility-money 0
# D8 W4 `3 j  Z$ C, uwhile [i < people]
4 W' M4 H- R9 p  s/ `6 G$ i) A% X+ H[
. x( k# @. l8 O; u- t6 wset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
# ~/ v- l( f1 y7 N, A* oset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)). M# o6 a1 Y3 y" n7 P4 O% i# Q, e/ }
set i (i + 1)* V6 x7 |* u9 p1 ?
]" x4 E' O" h% d, u3 U% t: x% f6 v
let k 0( D4 m* D! q" a9 P1 X3 j
let new1 0
0 G0 x6 B/ J; e, swhile [k < people]
* R7 k4 Q0 Z& V0 }[
( g! [% k- ~6 p& |) ~5 u* 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)
- `. r6 T/ g5 X% M: c- {set k (k + 1)
6 I1 n9 {9 s" F* a- I+ T]
& A# y/ k5 w; L0 g' g; L9 Qset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
/ X. h- F9 R3 c4 {9 ?set global-reputation-list (replace-item j global-reputation-list new)0 f8 m) y4 S& x8 U5 H
set j (j + 1)
. ^/ A2 T: X1 Q- A- L, a2 f]5 v1 W( I) F3 X0 u# V* I, d
end
+ u9 J! I5 o! z1 V
: L4 {; U* E2 T# ^& n- d
0 {: {. L$ I/ a) v* Y& b7 l# m; J6 @8 }
+ O, u3 p8 D2 c: S( M  l" z" Nto get-color
; A2 t) g5 I/ l/ e% z
6 |. R- T/ L1 t- I) g& R5 F0 C6 ?set color blue
3 }% d7 c- q# ]; W. m
end  m; J( Q  w8 S0 e

3 f, }1 ]$ J: k2 Uto poll-class" y/ _3 _: |3 h% r
end) V3 e- `% m/ J5 |

2 L  e: S0 K4 ]# C/ Wto setup-plot1# v+ n8 V+ y- g  H4 E, y. ?

% k1 C1 b# e, _1 K2 |; R! i0 zset-current-plot "Trends-of-Local-reputation"
6 t- g" F4 i! ~9 ~  I6 v

5 C4 W* L0 V4 T' U$ r4 Xset-plot-x-range 0 xmax
# ]* u9 |6 s& @; L) Y0 E* [- c& L

* e6 m! T3 u: n' J2 gset-plot-y-range 0.0 ymax
, Q5 m2 J8 F1 B( S& @* P: _+ N9 A
end
+ s* P; T. d) u$ G, ]3 ]9 `' Z" R
0 }' l2 ?' Y1 ~7 y+ M# Zto setup-plot2& U  p% U* Q/ t7 t6 y

6 O5 F# V$ Y! p0 F- vset-current-plot "Trends-of-global-reputation"

! T8 [" l5 k" _8 \9 o9 r( G9 F! K3 g, ?6 ]! R
set-plot-x-range 0 xmax

  z! ^7 w1 V1 q2 P2 L5 d7 S5 t' b2 k
set-plot-y-range 0.0 ymax
3 d$ A, ]2 w2 A) Y9 \
end/ B( Q7 z( ?' _
0 f/ G4 B( o6 ]; \
to setup-plot3
2 H% Y5 P$ d  u9 z6 ~/ U: C6 T6 D' Y- y" h1 y. L
set-current-plot "Trends-of-credibility"

4 @4 y) d8 \6 c& K
* e# ?# f0 J% O, Q. E% S( y  ^set-plot-x-range 0 xmax
- ^! [- l0 y) L0 L
' P9 k, J' x3 Z- N% K# X" a
set-plot-y-range 0.0 ymax
& S; x3 j9 b- B0 z; h! j
end
2 _) @3 l5 ?0 P* @6 L8 [  |/ d  P6 A  v
to do-plots
/ p9 L! P. n( {2 sset-current-plot "Trends-of-Local-reputation"
& s- O5 H; U; H6 s- M- Gset-current-plot-pen "Honest service"
! a5 c" R) ]: F( s- Pend& W* G% l- p  j$ m
5 Y- `$ f. }3 E1 N! q' j0 g
[ 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.
$ [6 D: Z* Z9 }7 p6 M7 d% {
/ c8 d0 P$ V( D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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