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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:
* i7 w& M6 G9 k- S- s; \to do-business
" O1 m/ e5 O/ ~' T0 u% t rt random 360
- {3 b+ M. k' E/ y! G fd 15 T: D7 U" r" i: L2 s) ]
ifelse(other turtles-here != nobody)[; {8 r# p4 s3 x. ]9 L5 H. I1 I
   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.
6 e) J. y5 C8 Q/ b   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
) j; `7 e( a$ `- j, N) S   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
/ K1 Q/ ^5 w. y   set [trade-record-one-len] of self length [trade-record-one] of self/ m; ^9 q3 ^# H* E
   set trade-record-current( list (timer) (random money-upper-limit))
, w( F5 `' J/ n# |( @6 _/ ?. E: w& A
" I" J0 |4 }4 y8 h问题的提示如下:
8 b9 ^* }! ]" p3 \5 x( }$ X
- D) `5 l: F1 y( ierror while turtle 50 running OF in procedure DO-BUSINESS
' [. M$ i" Q$ G8 W, f* ]3 `0 S  called by procedure GO
. W- w6 a# L/ e$ x* Q. m2 zOF expected input to be a turtle agentset or turtle but got NOBODY instead.# F9 Q* b! Y! l  C
(halted running of go)6 H0 V- F1 {& T# H* t  _* h& @
, h. d; M: q& Z8 X5 ]0 B9 ~
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~~* x5 L2 r# T$ u9 `
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0 s5 x" x2 f4 s  j
globals[% o+ `7 y7 F; G" V/ K
xmax7 e, _$ x: @6 |
ymax2 N0 d9 s) I) z3 \* x5 _& P
global-reputation-list
1 `$ \, K% Z6 C* T) f( ^: U/ V3 m) C+ G0 Q
;;
每一个turtle的全局声誉都存在此LIST3 y) ]2 i* v# w4 Q
credibility-list/ Y3 `2 o& |" Z+ d/ c" v8 _
;;
每一个turtle的评价可信度2 h3 W1 v% x3 f& F
honest-service
, b9 o/ {2 a' L1 J' g9 S5 Q. \. aunhonest-service2 {5 s2 C5 W% H
oscillation
, R2 g" ?6 w1 Hrand-dynamic
" g4 j) P" e, o& X]
# O% g) s5 d& s4 P8 B% V1 F- ^2 ~  x# y* G; R
turtles-own[( {8 m% N. d" x* e3 a) d: f9 u7 L
trade-record-all
) O1 f5 Q: w$ S0 J6 T" K& [4 u3 P! N;;a list of lists,
trade-record-one组成
5 p# \" b  ^5 `+ N% htrade-record-one- B0 {7 |8 N6 t/ N7 P
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
8 r1 s/ I, H5 f* k& i$ d$ ~/ v2 V# G5 l1 o8 x0 i
;;[
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]]' e' k9 x6 J- a  H
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]' T" X6 A- w3 n* |7 G! U: g$ s( H# X
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
; o- Z# s" N$ h0 a+ m$ xneighbor-total6 i  \& Q. G4 X5 N' A- S+ P/ Q
;;
记录该turtle的邻居节点的数目, U/ c+ K- \+ P4 f& d- \% @1 n
trade-time. g1 w' b& E8 D  k. Z
;;
当前发生交易的turtle的交易时间
" o6 h# x6 v( d+ \: nappraise-give1 d1 Q* O; Y& K2 D$ J( A
;;
当前发生交易时给出的评价! j, K3 W9 J0 o9 ?  g, [
appraise-receive
2 Y; w! m+ ~( J0 K, Q/ ?7 p5 _;;
当前发生交易时收到的评价
- P. g2 s4 t3 B/ z0 Pappraise-time# O6 [. m2 J5 G5 _0 ^( G! T
;;
当前发生交易时的评价时间
: c8 I; P+ h( c; e0 vlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉4 P' u! b3 t$ X
trade-times-total
- K/ t( d) p& }+ d( i;;
与当前turtle的交易总次数
3 o& u! w5 P% G. K, X0 j% a2 ltrade-money-total* h/ p% R+ T9 p
;;
与当前turtle的交易总金额
8 B- o3 X: B6 Y1 D# G. olocal-reputation- F" r% _1 m2 U2 a# V
global-reputation* @4 J- D( Q- r/ E
credibility
: U' N' x4 u5 F;;
评价可信度,每次交易后都需要更新
6 _8 T- ^7 H$ ^2 \credibility-all6 r) k% c1 l7 F/ m0 `
;;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# V6 i  \9 a( p4 @' c

  N& {( [! |* C/ w/ q$ l;;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
- b5 Z4 I& J) z2 |credibility-one! t) K8 a* \. F8 ^9 G
;;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people9 r& [8 P' n( L; U/ V, G$ g0 s. m; `
global-proportion
# f# N5 a' p# f. T0 G: g. d9 p. Scustomer
: r, i- @- L# i1 o4 S3 A1 Fcustomer-no
9 `  I; {6 I0 t1 M1 k6 y" Utrust-ok' J: f! N* y7 a/ o+ b8 j
trade-record-one-len;;trade-record-one的长度
2 D. b. ~) u+ b) S" j( L9 I+ I]
- Y6 l* {; \- n% F
3 j' ^, V- W" V$ I  ];;setup procedure
  V/ u1 p3 [+ _+ q% d; M
' r3 K" k) e' y# B' b9 L9 m" jto setup
% P3 Z- \' n( ~
3 j4 J3 V8 @$ B0 K4 c6 F: dca

3 _2 ~: W8 W" K0 G+ S+ s9 P# D; Z& n! b
initialize-settings
  t2 g/ \# Y' L  o" R

; ]% L( t$ F* O+ R1 Mcrt people [setup-turtles]

1 [' M* L% d# [8 B6 n6 i4 T- k9 O/ E
reset-timer
5 \, a" S5 J3 N; d+ l! n: T  v
3 C- V0 B/ ~, N1 ]* Q# ^: ^) W
poll-class

; L" R% K' {5 d, N/ w4 ?3 x5 y& p& ]/ y7 [
setup-plots
* `. ]4 @8 `( o2 M0 n: A
# C- P7 i3 m5 D9 D
do-plots

4 e8 x& S4 n3 E1 zend$ w. B' J+ P- g& G
' M; Y+ a+ l% [1 P2 y
to initialize-settings
  `& g. H( r: K' S+ l1 V, k9 }& H; ?
set global-reputation-list []
8 `& Q% R8 O" C' z& R/ l/ b6 a

7 z- h) r7 ]* M  B' `/ S4 sset credibility-list n-values people [0.5]

; T4 @: o5 G, A" c
& y6 Z8 l1 a% b# I$ ]$ _set honest-service 0
% p% j  K( F  q) q6 W) f- ]2 j

# `. Y7 J& ?' L- P# ]set unhonest-service 0
$ o9 q. h! m2 D: e' m1 w
& h6 p0 X* v) N) ^# W
set oscillation 0

! g# G. O2 C9 L8 Q+ y
0 v3 T" s& \. aset rand-dynamic 0
4 ]8 {: x$ E$ a/ M
end
; s- m& j- {, h4 `8 ]' O/ K+ }  Y4 A- q' V+ H  v
to setup-turtles
, p# W4 W3 c$ n/ cset shape "person"
3 t' x. }. t. Z8 ^( N, b0 J& }) bsetxy random-xcor random-ycor
2 X& @1 B# y, z! V8 Yset trade-record-one []8 ^# D" d% m# f( y/ [

  w5 k( g2 S" l  Z$ [, tset trade-record-all n-values people [(list (? + 1) 0 0)]
* E$ g! T' p0 b" |- l; o
* v# R8 x; ^5 ^8 p
set trade-record-current []
( I) i" g0 Z& K" ]8 q+ a2 L2 eset credibility-receive []: v8 H7 V) j5 R3 h0 H1 D$ g8 k. F
set local-reputation 0.5' w, E: t) r4 C2 A
set neighbor-total 0
, m9 g7 o; U- G7 sset trade-times-total 03 P3 j8 U! K5 o  h6 f
set trade-money-total 0& M4 a. ]$ s6 l5 V/ I0 M+ ^+ l! D
set customer nobody
9 H: I1 O' V  K  C+ N9 d4 e# zset credibility-all n-values people [creat-credibility]
. ^. G" [6 E  vset credibility n-values people [-1]
+ q/ a7 z) |$ v# x0 k, {get-color; s7 Y6 L2 F& u8 G) i

+ Z/ r" x" |1 a7 g1 Vend# Q" ~) T4 g" I2 F+ \

: n/ q( u6 ^' ?" d3 f8 Cto-report creat-credibility
# Z. j: J: T0 Z: d. Y) ireport n-values people [0.5]
0 i( U! D4 C: hend# P" g5 o) M' e2 q

0 ~- I5 Y+ K' yto setup-plots
- t& U4 }7 B9 ?5 g
$ }& M0 P( Q; R: _/ Nset xmax 30
* T; j8 W; m2 V

* n3 h6 N0 `- s$ N, q% E( _set ymax 1.0

: M& d1 f$ d9 U: @7 k7 Q9 x; \6 ]+ N; ~6 L9 z
clear-all-plots

' f, j3 k, S1 P3 T+ o! F6 s' w, ]' l7 J  \
setup-plot1
# N( s% @9 R9 ^  u8 Y, F

& m0 o: x$ I7 f( `  w6 A+ Lsetup-plot2
: D3 h' O0 Q: c" `0 ?( O6 |$ w, F

, X) I, U& A6 l, _" v8 \setup-plot3

* a) B- X, }# hend' L6 V0 F' a# w) N7 Q" Z3 [
' S+ Q! O  D7 K. m8 P; t* w
;;run time procedures; u8 w, j2 j: [; Y0 e; w
3 C, _5 `: g- p% _2 Z) G+ k
to go
1 T: Q/ J/ v+ h: H+ O; R
- d3 ]6 Z& E/ oask turtles [do-business]
* G( a+ i+ ?2 {
end  L1 B' v; x$ C! T. P; O( a
8 V0 n1 ~2 U5 }& m% s9 j" r
to do-business
2 ^3 m9 L, o4 t, m# j- ]: n; J" f
) A3 [7 G2 M1 g. [7 @5 d8 Y) ~

4 i$ G5 s* F3 trt random 360
1 s5 X6 J$ D4 ~- E) y/ v: k

) p' z. j$ @3 b  ]fd 1
* }  }0 U9 `, q  L7 c, e

) j/ w; U) s1 u  L+ {# S# Difelse(other turtles-here != nobody)[
1 Q" i1 d+ x6 Q- a; w

' P+ q: w: P) j0 p- K4 _" J3 G. Aset customer one-of other turtles-here

9 F2 [! s0 H5 a  b' [9 W# V1 z3 I* p$ D
;; set [customer] of customer myself

/ v  A, K+ F2 P  L  r/ ^& x% ~" `% }0 z/ _8 u
set [trade-record-one] of self item (([who] of customer) - 1)8 ~) d. ~. M. c" o6 J2 O7 ~
[trade-record-all]of self; Z+ w$ c' o$ n/ J( V
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

2 S8 [# T3 w1 O- G2 ^+ Z0 ?( r. T& ^; B
set [trade-record-one] of customer item (([who] of self) - 1)( N. M# L+ a* P" y
[trade-record-all]of customer
4 u: Z8 v. v. {5 o
, q; Y- t3 s5 V6 y
set [trade-record-one-len] of self length [trade-record-one] of self
# x! H9 h* i. p# i: i! B# y

1 M) Z. T4 L9 ]0 ^9 @set trade-record-current( list (timer) (random money-upper-limit))
2 d4 ]/ O5 r4 X; v1 p+ {
% A( E3 v/ \) r! c9 J3 o
ask self [do-trust]/ M& X; A, K6 b  e; }
;;
先求ij的信任度3 V$ H7 m3 K6 {" m3 S
$ X6 t# R/ ~0 Z; F- V
if ([trust-ok] of self)6 p- e1 V+ h# X8 a# `3 q
;;
根据ij的信任度来决定是否与j进行交易[
6 I$ h9 V3 R- hask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
1 n3 v* A7 |% L0 C/ v! ~- n! ~9 {. E( a. X
[

- ^; n" g4 S. b- u3 H$ p: x, H) c
do-trade

5 S3 U  S* U& I3 V% H1 f# P8 o6 Z  v
update-credibility-ijl
8 J8 f; A  Y3 y) ]

# H  x8 v5 K# t. A, V& Nupdate-credibility-list
, I4 q. @9 n: l# R  K3 v4 j4 F
* `6 F* L/ S1 V+ G$ v

/ k* }- w% U2 w/ A& C4 B) r5 fupdate-global-reputation-list
/ {/ ?$ l3 M9 Q8 P
8 a$ D- ^$ H. A) s- z. H
poll-class

9 x6 G0 n' F% g. l% a/ f$ m# ~  c3 I
- p1 b; J2 e7 ~get-color
. l) P: W% U: \% F8 V' P% _+ y
% s8 |. ^2 ~; @5 j4 w7 ]- a+ h1 ^% W4 D
]]+ U  J5 }- c- X8 D+ Y$ X3 R
8 f4 J0 O  f; T8 G
;;
如果所得的信任度满足条件,则进行交易% ]9 H6 m' X9 A. {% H
$ u$ ^, L: T) J6 _0 `
[
$ h: o% J- O; P
8 n% G' a! Y# B; c" i
rt random 360

! X* y6 I/ C2 d( u# t+ Z# C( q
; C- B& i( M+ lfd 1

. l  V: t* q# ]/ C4 v
6 q3 R% `* f& z- t]
3 B' |) W& [( R2 x! r/ q3 b( D1 ^

" A. ]4 @  s8 dend
8 T% v9 Y3 n0 N" Q2 k! s' H
* ]" D: `5 C) f, P3 |' H
to do-trust
1 z+ i  D  h3 V% U% n' [set trust-ok False
4 q3 t! U! A/ v9 f5 P! n+ u
( V; ^7 T9 d% Q9 N& a+ G
( Q: O$ J9 k  d3 e
let max-trade-times 0. h7 |2 ^, Z, A  q; X6 i- [
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]6 j* n) t+ h& j! D% M# w
let max-trade-money 0
1 ?6 W) j* g/ o; a; P" yforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]' Z+ m8 h& h5 M2 D( J# _: K
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 r8 a; X- O2 W/ u
3 `' A% W& _2 G8 @9 M7 |

% X8 s7 {/ `9 P, B* x! c  wget-global-proportion
$ }9 x* @; v) s2 ?4 hlet trust-value; H' A5 X3 ^! Y! P0 ]1 z. c
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)
( x8 Q1 _( f% ~5 V& N* V
if(trust-value > trade-trust-value)
$ C9 \6 m7 {3 }* ^; J% J[set trust-ok true]
6 D7 Y- q& T. p% O0 x5 mend
3 B2 A7 w' Q! r4 ^, Y$ ^4 m; l. k9 o+ t
to get-global-proportion: E3 f& Z- B  \+ v$ r+ P- v$ s
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)$ m% A- _# o( m; Q5 G% W6 O
[set global-proportion 0]
% h6 K6 ~% A6 P! W) ^[let i 0
" @5 `5 E1 a9 ?6 ?. Vlet sum-money 0
. v# N$ ]7 _. I5 |! nwhile[ i < people]9 ?! ^/ B& |" O$ f" b8 ~
[
# f' w& N5 {0 S: y! iif( length (item i1 o/ \/ C- J1 p; V6 @
[trade-record-all] of customer) > 3 )

; Q5 h  b# n; Z0 b+ B0 q$ }[
0 H+ L& p5 _+ N% O/ Z! ]set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
" J. J2 y$ P. |. X/ m]
4 A' F5 F6 Q4 G6 X# C]: l" B: k0 R  \
let j 0" B0 `0 |2 s, ^$ C8 r
let note 0* g( c+ [# @$ A
while[ j < people]5 p1 M; l! M& ]3 _2 u" H* [+ t% x
[" R: F5 {# |) r: |
if( length (item i
! T5 f8 Y; N( r/ f9 V4 b[trade-record-all] of customer) > 3 )

; \. @. P& N+ I6 [+ |[) `. `. l* n6 z7 d# C# B
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
+ O6 D# q( u, E; j[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
' k  v2 R: Q( o; g[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]. x; ^+ g  p9 C& F  ~; p) N
]
+ M! Q5 _+ C: {3 n! _. e]
, O/ e9 x. V" n' b/ w8 ^set global-proportion note
% k) g# H: `! a5 E+ y]. c$ N- V7 u+ a( X" w( T, P
end
! }1 D5 M  f9 }4 l9 v5 r
4 y. T3 s  g; U# nto do-trade3 S3 ~& J% U* G0 |9 y' V) W0 L
;;
这个过程实际上是给双方作出评价的过程$ q! [# y3 a, Y! L( M. [
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
7 k# A# F7 t+ j( ^' S; tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价2 T( ^& _9 V/ M( B( K. V
set trade-record-current lput(timer) trade-record-current
) ~* ]& h" `6 \: k# T- ~0 `9 J;;
评价时间9 d2 Z1 S* @. _, Z; L
ask myself [
6 x  R3 {+ T  {, T: V5 t- K* Nupdate-local-reputation  `. @1 o7 m+ `: F( D
set trade-record-current lput([local-reputation] of myself) trade-record-current
2 ~" H$ E4 W) A" v' ~+ V]/ L0 n: `. [. i2 M
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
6 q. u  k: o* J3 J. F;;
将此次交易的记录加入到trade-record-one
& j0 o: B* P* M  i6 Jset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself), w0 A8 u: y1 j1 W* r, m
let note (item 2 trade-record-current )4 a5 o$ R" c1 _5 F. J, Z
set trade-record-current2 Z0 \. ]$ U/ T' F
(replace-item 2 trade-record-current (item 3 trade-record-current))
- o$ `2 }" y/ v$ r6 J' k
set trade-record-current
% g1 p6 K7 ?' r& W(replace-item 3 trade-record-current note)
0 B" Y4 l9 E2 x: M! ]" u
1 E! P" n& j, }& T- h! Y) r

  @' c6 a* s0 P2 _1 Qask customer [
% Z, k) n; _- D7 E$ B, Cupdate-local-reputation
" \7 S* j& b' Eset trade-record-current
2 `) j, m( Y( a& b3 D* V: C(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
! n& |# @+ O7 x1 R0 j4 [
], a% \' g  b1 b- H

1 j6 J, [( K- l6 V
0 E- [" q% e: f
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- y$ y4 V/ ^6 h/ m; R
+ Y/ i  \  e& R1 K5 r/ z
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
1 n& }/ E7 w+ Y;;
将此次交易的记录加入到customertrade-record-all) }& {& P$ z. Q1 _, |3 y
end
7 w" {* M3 V# D9 x6 h" f& r
2 _8 J5 F, ]: z  |3 R6 oto update-local-reputation
: N: M, E4 ?/ g; I2 x& x- pset [trade-record-one-len] of myself length [trade-record-one] of myself$ `7 A/ a: {/ f2 {% `
2 G- F) h0 Y1 n* k
/ B/ [7 Q1 K) Z- e
;;if [trade-record-one-len] of myself > 3
. s- q" ?- C+ w/ d
update-neighbor-total
6 |9 l1 w3 G* ]( m( B( \;;
更新邻居节点的数目,在此进行
- ]$ u5 A* O& Qlet i 3
5 L) |. \' Q+ z( @  qlet sum-time 0" b/ }* g+ R- _( j
while[i < [trade-record-one-len] of myself]* {# N: y4 L- U/ ?$ s; l- R
[
% b' J3 m6 }4 X7 N. `set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
! z1 I3 r# m& b9 T7 B8 s! Y! Gset i3 l, w2 @; R* g$ A( `/ l! X, P
( i + 1)
4 e- g' E  H- f! t* K. r
]
& ^8 b! @" a- ~let j 39 ~0 {8 W) a# ~8 q  g8 i4 N8 I0 J
let sum-money 0
  R0 I7 E5 Z6 [9 a/ `* Twhile[j < [trade-record-one-len] of myself]
( e  k! i5 K: U0 l! a$ r. k) D[. K# d* u' X- R) D1 o! h2 U  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)7 t! `' |/ y+ Y/ r; k1 D* }
set j9 X& ?: x2 f% a+ a
( j + 1)
0 c& k2 F+ Q4 J
]
5 x0 c0 i+ f3 X% ?7 clet k 3
( b+ v& g. W! {% d9 k1 r% dlet power 0. p1 Q  M, U: X5 I( }* w
let local 0
$ U7 x$ E, _+ L0 y7 q% dwhile [k <[trade-record-one-len] of myself]
% q& M8 D$ g. n. L; ]1 M/ [) M[
# K1 u5 I1 J1 C: }( v# bset 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)
8 r5 ^: Q( ?: w# S$ d9 oset k (k + 1)' P3 X: v1 W* r' f+ C! o! ^
]4 P0 p5 b" \0 k' G5 B; b
set [local-reputation] of myself (local)
3 z8 r4 @- i3 K) Yend7 `; {" V8 s# ~# q* b
( F, ]& _- E8 Z9 M3 v- U0 _
to update-neighbor-total
5 W- p' \- Y# i2 f. t$ ^8 C" R2 ^2 w, w9 b& x
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]* ^- z. K" `7 q/ k; R$ e2 O: D

5 N' `! g" ?; a2 r2 _7 i
$ u5 F; ~% u9 E$ `* |6 T* W
end( }& y' H+ |; s% ]: F' ^1 I9 w# i
, k/ v+ Y# y7 |
to update-credibility-ijl
" i6 T& `  W/ c$ v" b" Z: G8 S2 _) }
;;
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。
; G4 m3 o. d/ w+ ~) ~let l 0
3 I; M- x+ T+ Kwhile[ l < people ]
9 }4 p1 q8 J$ `- j& e) ~1 X;;
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
! F- M. b) v0 H3 a  x. m[
) r  A( F0 J8 j' ?let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
  e4 c! Q0 h) J: U9 J: [- @* aif (trade-record-one-j-l-len > 3)  |7 u  q9 o; s9 E" @+ y
[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
# H- C: Z7 y2 e9 b. ]1 I. m* hlet i 3/ x4 a5 y& v: y2 W) j
let sum-time 0
1 ^- q4 A* P. A4 Y! X" h  @while[i < trade-record-one-len]
* M8 ~! ?2 f' n( ~[1 t  h1 C$ F8 ?% C
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )8 O8 z4 w) N3 `9 i& Q, V4 }  O* v- d
set i5 v& \- U' _9 J  d1 i$ ~- c
( i + 1)

$ O. Q6 s) n4 R9 o: t* H]
& W9 N9 c2 r" }. h/ `5 V) q3 i" p* ?let credibility-i-j-l 0
: s, \/ f8 N: p) i; _, f* o6 E;;i
评价(jjl的评价)
  }" L; O2 k9 z$ K4 v0 @! Vlet j 3
7 A8 z. B# `# ?; H. [1 R2 Zlet k 4
: [; \" {$ ^# p* g( r3 e. z. jwhile[j < trade-record-one-len]
1 i4 s( T) x/ v' v[
2 H; m4 K* |6 M3 ?* wwhile [((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/ c6 @' O! \! j
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 S3 ~% v. {" U, b$ m6 `set j
' J: V+ ?; F* u3 M& l+ t  v( j + 1)

7 f( I! K/ S' I5 m! z  g]7 G$ t, _' u3 u$ K4 J
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 ))* l& z$ W2 C7 Z, i

3 u: e4 x$ c6 \0 k0 |: J; Y
- _" x5 g) B# U
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))0 l2 z5 q  o7 v! u4 v) d
;;
及时更新il的评价质量的评价
# V) \. x* G6 V+ s% j6 ~; zset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]2 x9 q" m$ K4 z8 P  K7 m
set l (l + 1)
; ^4 b& b2 G9 n# k" ^5 V; B]
- U  i% w4 |" c. c! dend8 m$ M8 `" E8 H& ~6 B# M: n" ?* n
( B- w% U+ O) [9 H& Y! H
to update-credibility-list
) Y$ N- o( q; @0 x0 f3 T+ S* Alet i 0
9 E& x% U9 E; w7 N$ \4 p' Fwhile[i < people]* G3 v4 H' Y4 |2 z. {* t
[5 F- f: z; Q3 z8 b6 i
let j 08 m/ o1 f$ K5 J
let note 0
, s# F- h( `6 Jlet k 0
- }! J3 B, S2 H' V7 e. ];;
计作出过评价的邻居节点的数目
" S4 ~& }( k" r# v  E' U# v: y9 Kwhile[j < people]4 w* D" R" E4 X7 G
[: d5 o. j4 h. k  ^
if (item j( [credibility] of turtle (i + 1)) != -1)
! \4 k- N( r5 N. e! ^# f7 Q;;
判断是否给本turtle的评价质量做出过评价的节点
- `% V" M' a) L' n, O' }[set note (note + item j ([credibility]of turtle (i + 1)))3 m( H6 p9 n0 }8 P8 @$ l; N
;;*(exp (-(people - 2)))/(people - 2))]

" p/ _, E+ b4 X$ V1 B2 u" ]set k (k + 1)
& q+ s, ?, q5 l, Z+ _# \]. a# N* b, N5 I) n+ l1 P
set j (j + 1)
. H/ e+ i8 R# [- X]2 g  g3 {# {" s+ a3 Y) o
set note (note *(exp (- (1 / k)))/ k)4 I/ T/ L) F: f* d4 l2 b
set credibility-list (replace-item i credibility-list note)7 O& W0 b- K1 _% N  u3 q9 a$ q2 L
set i (i + 1)+ |  v1 g( ?% [3 W$ \5 Y
]' z. d7 J- f: @  B" I
end
: u( p- e+ \. J& e/ F% d; _: d: U# D$ b7 h
to update-global-reputation-list5 K* \% i5 h" T& {; @0 M
let j 0  ^, ?3 c7 e- L* a. d- c% Z
while[j < people]) H  ?$ E* p% q" G
[' H" B2 n( b3 ?4 \* f
let new 0
& D' u  T! y1 S; X8 l5 l; I;;
暂存新的一个全局声誉+ ^! y+ W" [: H6 ^2 q
let i 0+ B, u: `, g, z
let sum-money 0
4 v/ j' J" ]  ^% E" [. |% p% ^/ Elet credibility-money 0
2 w3 F6 U+ y* n- G2 Jwhile [i < people]
" V- K2 s4 G3 _, Z# n[$ L3 C. |# W+ O* ]) j
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
# C# i9 I- _2 M7 l" U, y) M+ J( J8 O$ lset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)): j" K$ f( l4 @& J! m
set i (i + 1)1 N* C- A% ~" J3 u" {$ p
]8 [+ R/ T$ s' k/ F- e
let k 02 M  B) t0 ~1 z
let new1 0, e& Z6 [9 n' e+ J2 \6 ~
while [k < people]" Q7 t) X( l8 n: o, D
[
% w" e( M5 N4 Y% `7 ^& Z. 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)( H- e9 z- K% W. @
set k (k + 1)
3 B& E. S8 P4 J' ]]/ |* i: C2 B2 t' B5 D
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) / V5 ^8 _# l: f4 P' d% y
set global-reputation-list (replace-item j global-reputation-list new)% r( t1 p( s) ?2 L
set j (j + 1)
4 |7 o/ R! H9 e/ m2 X0 b]
3 V8 V6 f1 F! F- j) y* wend8 o- K# [0 A* \. R

  g3 D: X1 W. s/ r% y4 p  R, F% n( X* l

& \( I9 ?; c- Q1 Z7 Kto get-color3 m* I: o& d( v; I

2 U7 m4 {! }3 G# S" H1 j. oset color blue

$ n5 q" a; j, [% bend
8 D+ z" c9 q3 D+ _' m' R
1 J, |3 ~4 U& qto poll-class1 s" r7 {  x2 A/ ~
end
( S& n+ X0 c" r* E8 d1 M% T, n# X$ B5 ^% @7 Q
to setup-plot1
% f1 V. X9 {1 ?2 ^' n: r0 W& |4 G5 t! B/ \
set-current-plot "Trends-of-Local-reputation"

( R* D3 V6 X3 e% d2 U8 P# t, x6 `% ?
set-plot-x-range 0 xmax
; j' S# {: n; p7 ]2 t

( m, @9 }$ \* {& x" _& iset-plot-y-range 0.0 ymax

  k( }7 K  H) a1 |5 wend
9 b% _0 n0 c& A$ I5 E, D" w6 [( f# z- t6 `/ y
to setup-plot2
: b3 U4 u. v7 i) i* N5 J4 ?
) R& n, R3 U0 M  l5 Z- _set-current-plot "Trends-of-global-reputation"
6 x( f! ]% C  q4 x
! a6 r# M' \9 \$ g# z) u
set-plot-x-range 0 xmax

5 C3 E$ r% ?0 b' E4 |/ Z: [; e* e6 f5 E% S9 W$ I7 F3 _
set-plot-y-range 0.0 ymax

, f6 l) M4 X9 M+ X2 ]7 Iend/ x' i5 F. U8 v' n( F* q

. `+ h; k/ I$ O" l) Oto setup-plot3
7 U. W2 @5 a& P' H& z9 @
, p; \# S7 ]( [/ X9 F! O. L2 P1 ]  I3 Eset-current-plot "Trends-of-credibility"
( ~0 ]" n; i) M1 j3 _5 K
0 w& q2 J8 j" H% a/ F
set-plot-x-range 0 xmax
: j7 F7 Y4 `. q6 }8 z6 N" T

0 s: Y0 ?! Z/ Q! rset-plot-y-range 0.0 ymax
6 Z. u# b$ s3 M9 j) D' k
end2 K% q: a6 H* u! X

) P, v) e) U6 \/ Gto do-plots
5 y3 H( Z' h5 s9 M( ^& q, A% F9 |set-current-plot "Trends-of-Local-reputation"/ M- ~  s( r& W; j+ ^& Z
set-current-plot-pen "Honest service"$ E7 [* k. v1 l2 G0 J' X$ C6 o4 h
end! z9 ?3 Y7 i% T: O% r
. B& E$ U5 O& X. N
[ 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.* ?$ I% F8 h1 Q- J. ^2 P% Y

% h8 c2 s  `  H, b8 j: `( @' ^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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