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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:
* i- m: E, Z( f; w& y8 tto do-business
8 p2 X; k# R4 n rt random 360
$ p1 K% {2 N, _7 i+ s/ J+ `% w* U" E fd 1
+ n2 g  y. m- h ifelse(other turtles-here != nobody)[0 A# G5 @1 k' M3 j& B$ D" @% `+ @
   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.! ~* o. W/ d2 v6 @- L/ a
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self      T6 s) C' I6 {9 S% H5 T
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer. H$ w4 N+ ^( v  C
   set [trade-record-one-len] of self length [trade-record-one] of self
' ~6 g2 d; J4 q( l2 G   set trade-record-current( list (timer) (random money-upper-limit))
& j* G. p8 `- b% c8 B
( o, `0 P" O& d问题的提示如下:
. j( ^7 q: f  ^4 @$ `+ Z
! J% w' R  i/ m9 U5 g, O* Y/ x* Gerror while turtle 50 running OF in procedure DO-BUSINESS
' B5 ]9 p% C$ o4 x1 W% Y  called by procedure GO1 s& f0 D% ]6 ~
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
) Y/ u* J& o1 |* l8 O; H
(halted running of go)* U( e, |" C% A/ [; E" k
+ U, z. [& E- w3 u7 G2 X& 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~~1 j, v5 K; c1 t/ D
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7 y, Y0 S1 ]3 u/ x0 w/ r  y
globals[
: ^3 n7 h: F/ }; R- r; X) l/ W8 Mxmax
) e" f( V, V# P" Rymax
$ U& K* a8 M7 o% ?- xglobal-reputation-list
- O" {- k- o4 g6 E3 n. r
4 l# R. v- Z  ~( V! I;;
每一个turtle的全局声誉都存在此LIST
8 r; ]5 [! ^2 H3 G$ F4 {credibility-list; e( O3 p. w# \+ q* j
;;
每一个turtle的评价可信度/ ?# n% x3 w7 Q6 `) `7 i
honest-service# z0 ~4 C; _5 X8 j! B3 B6 y3 s3 \2 N* Z
unhonest-service4 I& J) x% r  T/ Y0 r
oscillation
5 e0 Z! }% K/ B5 t6 ^' Prand-dynamic
% o* K$ X8 h' D& d: h$ `; \], w& _' l  M9 Z

9 ]" n1 R( I2 _# K2 eturtles-own[
9 O9 n! P+ f) `) }6 R. otrade-record-all' Z8 p! k' S5 h4 k8 p- [5 m+ r+ {% p
;;a list of lists,
trade-record-one组成
$ h- x" E+ A6 ^1 g9 Utrade-record-one
8 E- Y! Q( I+ X. a3 u;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
# p6 D+ v, I) o, k" C( y
' \( a4 n) ]+ T5 g2 ~5 B;;[
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]]
& Z4 u3 m6 z  i9 b4 q; Xtrade-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]
) w. }3 y; v$ `; k. ucredibility-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
% L* ]5 o* R; \9 {neighbor-total2 l+ G6 C* R4 B8 r0 [/ j7 g
;;
记录该turtle的邻居节点的数目7 P1 v; U, _9 ^% g* B7 R3 a
trade-time* a( [$ C4 F0 r% D6 o; [* Q$ S
;;
当前发生交易的turtle的交易时间4 C( g9 @5 Y7 E; R. p4 ~  u
appraise-give: h5 o3 `4 C0 D# u3 t% g7 O
;;
当前发生交易时给出的评价: R1 {" @9 J6 a+ V
appraise-receive
. w  f! x/ y  V" y5 l/ |( z;;
当前发生交易时收到的评价
$ r9 Z- {( S# G1 jappraise-time
# m% E8 [0 N' y4 p/ L# z;;
当前发生交易时的评价时间5 b$ d% x0 K0 x0 o0 M
local-reputation-now;;此次交易后相对于对方turtle的局部声誉6 f7 N2 S3 D9 ~. m7 [* A
trade-times-total
4 X' D2 D- V" n) M4 O;;
与当前turtle的交易总次数; ^- @1 V9 c$ D3 F+ X3 t
trade-money-total2 ~9 F6 R& @$ Z3 i
;;
与当前turtle的交易总金额3 Y3 T. t/ }, \# |
local-reputation( ^9 y! L$ n; o2 y, f/ r6 F6 N
global-reputation
2 K; T$ S( P) V4 w5 h" J8 `8 Y' ocredibility  R3 X1 u/ X1 W# H1 R0 s
;;
评价可信度,每次交易后都需要更新6 b# b7 }- B7 D5 b# Q
credibility-all
: Z: K7 T' P, O9 N# C+ s;;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6 j6 c  {% G: i6 W& I& ]6 ?( k2 }8 h

" B. C3 d7 `9 x4 _. R) V, \# I;;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
  X1 E( z+ O6 F/ H) ?  V4 @credibility-one
# [5 y% V: b; I* w/ 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
  p4 b' [( J2 i, w* R* t/ R+ }7 vglobal-proportion, p& ^- ~9 J# t# s8 M( d: V
customer+ ]4 x- q: X) }- z. }# L* f
customer-no) i  v! O* d* C3 F) l  Y
trust-ok. y5 k* e& q3 G  I4 P/ y* B% Q2 X
trade-record-one-len;;trade-record-one的长度
9 S7 M, j4 H) G9 d9 J]
! w: w  y* c3 z4 u' O- a% r
4 Q/ B( s- s5 S) k/ o6 B1 n;;setup procedure% @  V' X1 O/ M7 z

  v* ~/ c# z$ Tto setup) ^: {/ s0 W$ m
. r4 t2 z& W  _$ i% }
ca
9 F: U/ I8 R! h- N. L0 U2 m: k" `
, r/ K1 O! ~5 V+ c, Q) A9 }& q
initialize-settings
% W9 a; E9 @% W2 z

# M% I1 \- a  L1 A9 Qcrt people [setup-turtles]
6 Y' g+ Q; N1 ~, J4 F+ P
9 [4 X# @8 }5 K* a5 B3 h2 ^
reset-timer

% N2 Z4 {2 ?" B' b  J  _5 C: ]: a; R$ U- K( i1 d& w: Y
poll-class

' K( x$ m. M: ~0 _1 E# [4 l5 F' d. z0 N& R
setup-plots
6 b: H# B. g: ~0 g) g% x! F

; @" o8 P4 n2 l& B' ]6 Ydo-plots
5 s& w5 J, `3 s; m" n7 u
end+ {7 M) t4 R$ V) A- j' F

7 ~9 D- a1 W) W0 B! r0 Q1 m: ^to initialize-settings
* w% V8 h! b  _' V# ^- ]
0 \0 \& O0 C1 y5 a1 [; `: lset global-reputation-list []

% I, O1 a- g. s5 W: ?7 n0 O, }' g. U& V7 J
set credibility-list n-values people [0.5]
: Q* \, s0 ~" z$ p

4 o5 S+ {: N$ T! h, T- A7 rset honest-service 0

- w# v. W" J- L9 w6 i; E; T
% h( M$ q7 W. A5 A" w$ uset unhonest-service 0

4 v/ c; g. Q: @! x. h9 w3 q; ?
set oscillation 0
- r6 p$ i/ j5 ^* b) H. ]
% \) M. v( W' H; l) u) r& t8 {% }
set rand-dynamic 0
. S% x2 G' E6 q1 K+ w
end
# R% F/ V2 ^5 x) W3 u0 G" b; v, Q0 ?$ F( z' v/ m; M+ x8 t
to setup-turtles
8 m  b0 F. b$ a8 |  F, Wset shape "person"
  _0 Q3 U$ P0 n2 wsetxy random-xcor random-ycor
$ F. I2 d4 O1 p1 vset trade-record-one []% S0 h9 I- p. h$ K1 k

! b: v$ F' u1 a2 Y+ ?set trade-record-all n-values people [(list (? + 1) 0 0)] / c6 z" c. h9 G2 |

% y- O3 _1 ]* I- S. o5 q! lset trade-record-current []/ @! ~; c* |, S# k
set credibility-receive []
0 t3 @- {  r' Cset local-reputation 0.5! L$ h4 {8 o& W% x$ i
set neighbor-total 04 \& @% t' x5 I& h5 w+ S
set trade-times-total 0' H1 Z8 z9 h; ?' C5 N0 U
set trade-money-total 0( I- C: T2 ^/ g, ~! |  f# B
set customer nobody, O- ^8 ?- I* S5 y! B; R  P
set credibility-all n-values people [creat-credibility], t* Z& [0 f8 M4 H  }
set credibility n-values people [-1]: m+ I; }: b* ~( k& B
get-color7 e8 T: l1 d# K6 c% s; v8 [5 J$ J

2 V  D9 O" A2 \6 f  Gend( t9 H8 ^# m5 y! @- W& `: n, _

; X+ P1 p" ^) V" y" _to-report creat-credibility; p# C& F6 z7 o1 \" W' o
report n-values people [0.5]; m- ~1 |6 Z7 v# z7 z) s
end
  E* h5 \7 N6 L" l* M2 Y! z1 D- ]+ x, b9 b4 }
to setup-plots  G! o# }% k9 O" d4 F
+ q. v/ y& O$ q: X9 f
set xmax 30

) W3 b! N- M8 B# \
$ D. _7 P: b+ s0 Xset ymax 1.0
3 e, i7 w- K6 X5 d: x

3 q" z' M/ ?1 Fclear-all-plots

7 B9 d. j# E2 F) \. u( [# }, w5 K; I) m6 u/ X  g0 c) V8 D4 \& q+ t
setup-plot1

! a+ e/ C" X- q! ]* _( L
7 c; G3 P) q* T- psetup-plot2
$ f- N& l' c2 r% `
( s2 b8 W% t. v* |
setup-plot3
2 a* U4 F9 K. z# t# [! X
end
: p, B4 K* j0 K$ \- U7 }) o8 p8 r: ^
;;run time procedures9 Y' i% _0 W, K+ l! v; S; O

% Y5 s; j& I9 Z8 P; I; f  `to go
) }5 O4 M# S; _
; _' }3 \. k: c/ g8 h) q7 T3 j* q/ C0 Kask turtles [do-business]

7 ^+ ^  E1 ]" G' M- Mend4 P7 Z+ a* }( @- M, o3 U
/ X# g. V  X+ K# v+ W$ v
to do-business ( F1 w3 @( A; u& y2 D9 ^+ q' s/ P: b. p
% e9 q, l5 R/ d6 [( y7 w2 d

, r6 o8 V8 `/ qrt random 360
3 ~! e6 T0 {. d: \7 p

* f, ^7 S% |, ffd 1

* q6 A. t. g  i* ~1 F& l9 d* Q
ifelse(other turtles-here != nobody)[

& l; ^9 A8 F" ~5 Z9 [  ^5 E3 x5 X4 \4 X9 w
set customer one-of other turtles-here
$ S( ^$ U. P. {8 `3 I

( a9 K2 F/ q. {( m0 M2 e5 b;; set [customer] of customer myself

; I! V5 ?3 r9 Z! k5 @" w8 L2 q
  d) i$ p0 Z7 Lset [trade-record-one] of self item (([who] of customer) - 1): p+ T) H+ O2 @: [+ y+ b
[trade-record-all]of self- b) w& [8 a$ z5 e
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

5 v4 Y3 t9 H; u% \( \8 R: v3 o
" `4 D- j) I3 u% z2 X4 @set [trade-record-one] of customer item (([who] of self) - 1)
  S4 `9 U4 s8 P5 o- J[trade-record-all]of customer
! ?, z* T. ~2 }. i) H2 n, @

8 c/ _4 n; F; R. T% H( Y& Pset [trade-record-one-len] of self length [trade-record-one] of self
( p9 }! G. l, c$ l6 p" k
8 Q% z1 C7 K) t+ t
set trade-record-current( list (timer) (random money-upper-limit))
; R/ D; @0 j6 ~: S5 i' u" P3 }1 S

3 ?4 x1 E. O- z4 r0 bask self [do-trust]3 L3 W( A( P/ v2 R1 X, T9 z/ {
;;
先求ij的信任度
, y8 c% d/ K* o/ r) W) ~( O3 i7 E, K$ I) m$ S7 q0 b8 {" R
if ([trust-ok] of self). J! d8 n8 K: H
;;
根据ij的信任度来决定是否与j进行交易[! G. }/ S" H  E2 f$ @! R
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
! @/ v+ d& Z8 r. W7 l3 {$ \  }  v6 p, U4 G. N6 W% s( Y$ K* Q' c
[

: H2 E0 W# O+ Q: F
$ X/ p  \* z5 y% q3 I; Kdo-trade
$ h+ e: U, |" a0 b# \* Y  c( W

# P( n/ H+ V% D6 mupdate-credibility-ijl

9 D6 [; _* X) O' ^7 Y( z9 g9 n2 g) |6 x* [& U! u( }7 V: r) ~
update-credibility-list% ]; q  e) D( B

" b# `7 N3 V: @  x6 J4 A/ @2 O4 c9 h! k3 M: k, |% e) G
update-global-reputation-list

, ^4 u7 D/ J& p! \7 K, _0 z% k$ y5 Y# [, r0 C
poll-class

5 U7 z3 R7 j, O0 u; O4 R8 E" \* p* K9 U, H
get-color
- u* V! `) _0 o

  T6 V/ F% U! p, V% m2 }# _  I]]6 j" w7 E9 C, C! [2 J. U

2 Q8 n! I4 t4 C& r! n- W;;
如果所得的信任度满足条件,则进行交易0 a* v& g7 r7 j. Y& l) V( b
  i* V, a' Y! @
[
2 }& J) ], N6 S3 U( V3 Y0 X
3 W9 O! m7 `9 d' c5 E
rt random 360
0 U# t8 f; }$ [1 o, c/ F
) H% X! B; R' T; s: y. y9 i( Z
fd 1
$ Q( R: B4 }: d- E

( Y' X+ l, M" M( P: t]
8 h2 |; s+ {+ W5 ~
5 v4 n8 {) G; N* ^! M* W
end

% a: H# V! P# s9 _
0 P' s3 K8 W, i# g) N3 b6 y, f( rto do-trust % Y. W. C" k+ u7 [, t+ j, X2 a
set trust-ok False
6 w3 Q( v0 H# b* s  V: a  t0 C$ Z1 P; m* ]

4 l7 a( }9 c* c+ p. e# wlet max-trade-times 0
* r/ |* S( g; {* L+ @4 c5 tforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]* Z" }7 I/ ^  G6 R! Y, R
let max-trade-money 00 P" X% x$ j+ D" e/ V
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]( b! j0 W) o" Y7 W( N2 ~1 }! n
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))7 J; N$ Y' ]1 g6 n$ H6 E3 n

' N- g5 y; Z& }4 u

0 w7 t& E8 P) h; yget-global-proportion( {" A- p& K0 r+ G% E- _- A
let trust-value
1 A3 y3 D6 E3 s0 b" _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)
. G4 Q" q! N& A& p
if(trust-value > trade-trust-value)( A# m" d% Z/ V( W7 B4 `
[set trust-ok true]# }4 a* T0 h. [9 ~$ X
end
. l3 V7 q. ^" S- Y) n7 l* c' v; C: f6 A0 L
to get-global-proportion0 l/ T" {! e, e) [- M9 y4 F! @
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
6 l/ B) ]0 _% m+ e  {& V[set global-proportion 0]
% D3 A) E8 @: x  l/ F, Z! K7 r+ v. K" r7 a0 c[let i 0
  a; S7 @; p8 |let sum-money 0
$ ]0 L* [$ y6 U3 ]while[ i < people]
8 d8 k& p$ }: a& _& N1 y: z6 S[. J4 G( V* I. P  d; o1 @
if( length (item i7 Z" j* A. V( G
[trade-record-all] of customer) > 3 )

. D2 v7 {5 M0 |/ h[/ z7 n( p2 I; J! o
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
, M( j; _+ ?% g- b]
  Q) _. }+ v8 [2 p8 {]
) [( p6 g" k" Plet j 0- J& ?6 _' X9 Y& y3 w# ]
let note 0
: l6 i; {1 U* d. _1 ?3 [, Vwhile[ j < people]
* X9 O( F4 D& _2 n[# K/ _' B% M+ J( y- w8 [
if( length (item i
5 v  E/ ^: f$ h# k* U0 ]& p[trade-record-all] of customer) > 3 )

0 w4 j( o) x% Y, \/ H[8 D. o8 l% c: `1 M* u3 g3 [
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)0 _8 v9 Q, V5 J
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]- @  ]; T5 N" ?' t' i8 K
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
+ B/ D3 ?& K4 [" {* D" }1 Y$ i7 H]7 h3 q3 h. S. n' J( V! V
]: j' h* ?( E. c/ _+ b* K
set global-proportion note4 `2 A0 d4 P: ^5 ~# ?
]
3 _% s0 Z; I( ?- p% q% Bend8 {) W: D6 k, r  g8 X

- Y1 F( S. P. D3 q/ J) Dto do-trade+ A( i% `" Q9 @1 o: j$ }1 T
;;
这个过程实际上是给双方作出评价的过程
6 C; Y* Q9 {7 Uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
. i! }$ H0 [* w* |" N/ Bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价+ D8 {4 V! u; I0 }$ T4 v, k
set trade-record-current lput(timer) trade-record-current
+ s* {, c5 {2 B4 U2 k8 [;;
评价时间) W) R+ C+ i; u6 {3 H- `
ask myself [
: N2 b+ _1 w: E+ C; Gupdate-local-reputation
+ u1 c1 n  f& j% J8 yset trade-record-current lput([local-reputation] of myself) trade-record-current
! }- ^$ `9 m" d4 w. X]* _- N  ]1 @' V" v
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself2 f) q7 R- w6 D4 D9 k
;;
将此次交易的记录加入到trade-record-one5 i' i4 G. {- _; B
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself); v' F5 \$ E+ D3 w" I
let note (item 2 trade-record-current )
: \+ \& s1 k% o! _: Cset trade-record-current
# \. u. M. Y% ^( g* j, ?: i4 o& @1 N(replace-item 2 trade-record-current (item 3 trade-record-current))
. T  V2 e/ M+ s' _7 ~0 t
set trade-record-current) M6 M" F; |" @* [
(replace-item 3 trade-record-current note)1 L# A: O- F) R( O9 ?! T
" ?2 E) \) i- e0 s) G
6 Y4 b' Y9 \. C: S
ask customer [
; I2 }. t/ T; S4 f$ J, qupdate-local-reputation
+ J& p- n8 }. B* X: yset trade-record-current
" E1 L8 w9 X+ t+ x5 j(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
3 h! P: c& O+ q: U9 M0 j3 r; u+ R$ _
]8 p" k7 S+ n  D) A! u
! s1 ~8 _5 x0 H- i$ E- X

/ s! X8 h0 S9 [7 a# j* d. Xset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer' ]& P. B( t% }) f1 p1 W4 L
2 r+ y! C$ D3 v* r: ^: e
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))7 H1 L& q# b1 w5 W5 a  i
;;
将此次交易的记录加入到customertrade-record-all+ F0 L% g$ w+ _. J1 }; ~% T
end
1 w, d! K8 R/ y7 Y0 y# l# I
: [: \3 ?( w5 W/ Oto update-local-reputation# L$ `5 B# S. r2 a' ~; h! ]2 _
set [trade-record-one-len] of myself length [trade-record-one] of myself3 P8 L2 M5 {; N! F

& w6 ]' }: L1 b6 b* `' V! r5 m, w, B7 C! D! E
;;if [trade-record-one-len] of myself > 3

& C. @' V( f  Nupdate-neighbor-total/ |2 \  O, k' B' x# {2 P  a
;;
更新邻居节点的数目,在此进行
% g3 ]% _% E! D& s; Y+ H, elet i 3
' y0 L% ?0 Z; L1 a4 Q' A  Y% Wlet sum-time 0
2 e# N7 Z/ x7 W3 E" g, a; r% uwhile[i < [trade-record-one-len] of myself]2 u0 G) Q3 I9 v9 F- [$ j
[
! K/ ]4 J+ o$ J# v2 |2 \set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )' Z# l) o# c  p9 T5 T; \
set i5 L1 [4 Y5 a6 \  B$ j: M
( i + 1)

$ M2 a. Z- G$ q4 K% q: T5 _]( M( }2 Q; B8 N( T# L8 G4 K
let j 3
* E) p2 u" {1 \4 B. m9 z* slet sum-money 0
( o+ X' W3 R+ @; t% Uwhile[j < [trade-record-one-len] of myself]& n9 ]/ T( h- x9 k$ L3 C% w$ W
[
* f/ C3 `. ?4 t( f5 Iset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
7 L4 v9 D7 X" r3 [) J+ |8 t1 _set j5 F! [; D7 [6 v7 A
( j + 1)
$ F/ A+ L2 T& ~6 I) W4 M5 b; l
]
0 t* N% T0 ^; T  mlet k 3( `, O0 B+ \6 n  G( h3 L% ~6 V
let power 0
: p9 u4 E* ^, g+ r9 e" o6 U& qlet local 0
: g( v$ u( V: S: E/ qwhile [k <[trade-record-one-len] of myself]
2 |% g+ g" [- k4 z0 F& i) j/ ^[* x2 h' i* w- i8 ?% D
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)
3 m, i% ~! K- x  W7 y/ M2 G! Cset k (k + 1)- O+ q; F: ^' ~6 f
]9 }3 A  d+ V" z9 q( K
set [local-reputation] of myself (local)( \2 r3 `! B- j" I4 G# W2 ~6 y
end! s" V& x% H7 H# `, B
  Z4 ?5 A! \3 |( ]8 v4 l/ V" c
to update-neighbor-total$ d% ^4 R5 U5 R9 D% N/ U8 i: N; `
$ v# Y3 a4 t( @! @6 O
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
. k' e9 ]$ v0 C) i" l2 N# M. q7 A$ h4 ?# f8 o" l
' W9 q7 _6 t+ |. G+ k' w
end8 U' c% ]! {( p. ]! Z, A0 C/ ?: q

* s1 W  o  U) Mto update-credibility-ijl
- N, \0 a& u2 D, x& U0 m6 Q; h1 j) @/ k& v8 j
;;
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。
7 p1 k8 P- l' c, ]/ y# M" llet l 0
1 K" E) t/ D6 e" swhile[ l < people ]5 m* W+ r9 F* i* n- q. [2 f! ?
;;
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: B. k3 R0 [9 D" [8 k
[
) b0 v1 a+ f1 @; klet trade-record-one-j-l-len length item l ([trade-record-all] of customer)6 ?  Q5 B. F$ N8 Q
if (trade-record-one-j-l-len > 3)$ i; E# G, {2 H1 o- K
[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% b$ I3 m$ V/ m, F4 e( O! f
let i 34 P0 G3 Y) [# m8 f
let sum-time 0& \/ t) X: r6 x" K+ l
while[i < trade-record-one-len]
; A/ u! a& @7 d! v& H2 d. h' B[
4 _- Y0 O) \. Iset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
5 ~7 T( y1 M& A  Z# d  q) ]set i1 _5 k; V* k2 b* }# ]/ D, J3 W
( i + 1)
+ G9 [4 j# P  q2 n" `
]
8 L3 v: u& D$ U$ b# W# P) wlet credibility-i-j-l 00 D. R2 A. {/ N0 H' M9 W* n
;;i
评价(jjl的评价)1 K- ?: q8 l% Z9 {: p. D, G
let j 3# Z. A, Z, {' Y0 I; c" y3 x
let k 48 @& }, L1 g% C' W9 G* @
while[j < trade-record-one-len]9 |+ j( a- `* M0 f* S
[
2 a. F4 l5 e* @; }* cwhile [((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
: J+ @5 s) j# Y2 Mset 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)
/ Y# n- g# Z+ X$ D( b% \set j
3 v& Q) |- G9 \5 F( j + 1)
) [0 Q) a. U; m
]: @6 l- {( v( S8 @4 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 ))! H& O% {( j6 ?, e' A- M2 Z
4 P3 ?% Z# I# z% R: U- B, W
! f6 X6 o, }+ Z# e
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))! T; N  Q! v* G4 C  U
;;
及时更新il的评价质量的评价
7 Q  d2 G. d- I" k* E% tset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]$ d) T. ^3 S9 A3 }/ V
set l (l + 1)
* j# V* t0 N" k# K2 O+ z) {]
3 u& m2 _- U% N5 s; h  @5 Mend7 w$ V8 o* @4 A8 U/ k
# q4 C4 r, H. T: C
to update-credibility-list! ]& u6 d" j! R: s
let i 0  p1 c& f% R9 Z7 y
while[i < people]
0 Y' n4 z) K; D  O8 C[
; F2 z6 I( A% D; _let j 0
' E% g5 [' y& S4 I8 k' ~$ a, f5 [5 ulet note 0
$ n' _, O6 ^8 }1 q5 Jlet k 0
9 A* ~" N6 Y& x9 p; ?) R, |( g0 v;;
计作出过评价的邻居节点的数目  L* s1 f( G. {
while[j < people]
/ I1 [) m! q+ p9 d8 j  z[5 S" |: y  G- y9 S3 H* L
if (item j( [credibility] of turtle (i + 1)) != -1)
$ Q0 _& ?5 t4 n% h; O;;
判断是否给本turtle的评价质量做出过评价的节点! o) y, z1 A4 _  g8 x8 v
[set note (note + item j ([credibility]of turtle (i + 1)))1 d2 {, d4 Q) a, g. S! A
;;*(exp (-(people - 2)))/(people - 2))]

) s, U% h: e- \, o$ \9 Cset k (k + 1)& T0 g8 f* ]7 f
]
; q6 T  c7 C- r* b1 w9 B, Fset j (j + 1)
1 h' ]4 ~& Q) ~! S7 j]! {4 |/ K1 y1 y' c9 w) M
set note (note *(exp (- (1 / k)))/ k)
$ o) n9 x, f+ A  O$ @% I* Vset credibility-list (replace-item i credibility-list note)
  I. o- C3 u. Kset i (i + 1)- s1 J* E$ l/ b% s0 i) h" G
]
) W- x/ \" T0 f8 jend4 N! T' M& u( x. S, h+ B

5 q1 Y4 \7 d( ], v" A2 y, v4 vto update-global-reputation-list
8 a5 ^, }# Z/ s# N3 w( a7 wlet j 0
& X6 u8 D" O$ L0 D. ]/ ewhile[j < people]. ]) ~0 r4 d9 v% G! D
[9 i6 @# G0 f( ~7 Y3 C
let new 0
* @& `- x9 t& z  z2 v1 T; Z;;
暂存新的一个全局声誉; P9 i% x! R. Z7 \* h
let i 0. P) J6 X$ C- T( w/ V
let sum-money 0( I. V" T8 d5 w! |/ r
let credibility-money 02 [# G% j2 r1 r: C- o/ Y
while [i < people]1 P) f+ `3 ^7 u1 u6 V1 N- S6 |
[
3 X. i( I4 v6 o( ~+ iset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
# Z0 _* W# K, c- a2 L4 u5 T/ Nset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))1 M9 ^( N+ R- L9 K6 h# |- b
set i (i + 1); V1 b. @$ i- y, ~
]/ v4 X9 r9 k5 v  {- Q) y
let k 0
2 e: x7 u8 _3 k3 }  M. q7 Q1 M, t: ^let new1 0$ g) T1 ^3 k2 {
while [k < people]
. w1 ~/ @( |* C3 R/ ]' l[
6 L4 T! q! R8 f' I% k0 T7 X+ Z' E( zset new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)+ t/ d% ?3 [# p' k. F% Q
set k (k + 1)
9 T1 Z( _- [6 P]
5 G- v/ e7 C0 K3 Xset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 0 A$ l2 Z# {# X$ c0 z1 m* W; |
set global-reputation-list (replace-item j global-reputation-list new)
) I2 C# m! h( _set j (j + 1)
* S+ Z2 N4 g1 D* c( s/ [  K]
" ^& A. M& R1 ]" l- _! O0 Xend& s" l2 F9 Z3 L
6 W  S( r, q& ~0 d2 b1 b1 m

1 s& E' }; Y) G0 d. _" u
/ s: M+ u! ?- ~9 D2 ?2 G6 `to get-color
4 A# L* B8 q7 |4 \5 J& Z
$ `2 q! n. s9 c4 D2 U$ w5 Vset color blue
/ R' T0 ]* e) l. i7 ^
end
, B' h# x" \; N* b  _
7 O. h. B1 T, d, p, w* m  eto poll-class
6 R$ ^' l* z- q5 `4 n4 E/ q( W7 ^end
2 s& n# ]" k$ z6 X
- _4 B. X6 m3 S6 I! zto setup-plot14 D' }* r, b# A% M, j, n$ u! s0 Q

! d8 H/ T% W- O* M6 Gset-current-plot "Trends-of-Local-reputation"
) w' V3 `# m2 K, a: d
0 ]) b+ J$ _- h" s7 x
set-plot-x-range 0 xmax

7 h" G2 `2 s* `" f8 S, V7 y
: k+ A$ ~8 J* d* l% X$ c- Cset-plot-y-range 0.0 ymax

, D( G+ ]: i' \; I+ B+ U1 Hend' F5 ^% x! E4 o! ^0 D; g

, ~5 z& T1 u& L( \. J0 mto setup-plot29 q& P' t& q+ E! R; N! j) B" U

  J& F$ [' n) m# W  w7 U( Q4 t5 }7 b( Pset-current-plot "Trends-of-global-reputation"

: l  [" D  `' s) r! ]  c9 t; @# ~% z* [  o* B- t# O6 R  B8 l
set-plot-x-range 0 xmax

$ a; O. X7 Z' L# f2 t/ C) f0 t
4 n* y! p6 t" F+ E  ~set-plot-y-range 0.0 ymax

2 V+ |& d5 D; O# Lend
* N, S0 P% ]9 c& A/ v: W; S: S2 X
) }) R4 |: Y2 f; B. T: A0 Oto setup-plot3) U; h* {; R) T
: |7 [! w) |) i/ K+ P% ?% G! ?
set-current-plot "Trends-of-credibility"
& [( d3 z+ Y& C# L0 E
; V  j2 v' t! H6 J# z7 n9 q7 [  g' w
set-plot-x-range 0 xmax

, K6 j" w& w! H/ I( L5 ~' H
& W5 B# W" L. s# p' ^3 jset-plot-y-range 0.0 ymax

6 f& A6 p- X4 J. ~0 r' Q4 p9 Cend! s. v- G" E& p, i0 j/ q  ?
0 e/ B& `$ `6 E) `: ]* U, d/ H
to do-plots7 L* D* F+ \+ {6 R' e
set-current-plot "Trends-of-Local-reputation"% ~+ K5 d/ X4 h# G8 T+ l5 G: {
set-current-plot-pen "Honest service"
. z8 H; k8 W2 Gend
2 i5 d7 |2 F9 E3 y) B0 o* y! D6 f# [* r6 E
[ 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.
1 X- l4 a& T4 ^2 \: V6 {6 `$ G, ~9 u: ?5 k0 t" u6 y: {
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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