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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:2 u, `' Y2 D: _9 w$ ?
to do-business
0 A* A4 Y- ]) p7 G5 F3 P rt random 360
7 I( y' O+ G* \+ T0 |1 M' \  t fd 1
7 P! G# }) S- X; V5 g* P3 Y ifelse(other turtles-here != nobody)[
  {' b+ ~' x- F; K. l& j   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.. ^  R& n4 q- Q  k3 d  a; c
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    % L* U: H9 k3 x- ^+ |
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer( T; R" R& F5 T# S6 @! |
   set [trade-record-one-len] of self length [trade-record-one] of self
- u: w) `, ?2 t   set trade-record-current( list (timer) (random money-upper-limit))
. `% f8 j: K; Z, a0 i" q
9 I3 j2 U: K8 S/ H问题的提示如下:+ e3 K. m! P# ?7 m

2 ?7 C+ ?$ f3 j* o2 @. w4 @, derror while turtle 50 running OF in procedure DO-BUSINESS
  Q3 ~7 Q  p5 u. _+ s3 Q. P. l  called by procedure GO
/ U3 Y0 ]  N" Z- b$ D% L+ |OF expected input to be a turtle agentset or turtle but got NOBODY instead.
* T& [) F- s! Z2 P
(halted running of go)
7 [7 N; y: V% J0 Y( r3 z) x& y
. ^0 z/ _& U7 @2 y6 H' D4 u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 \$ ~* N( g  G6 s( N9 ?* _3 u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
5 \, F/ w: g- u/ y  E, aglobals[1 R0 F5 g5 g& X/ u7 y9 k
xmax
$ `- L( B% B" e- o# `  v4 R  Zymax
: L- J/ Z7 K4 R. rglobal-reputation-list
, b* C7 f1 D. |; A- F9 s# E; w! s5 H7 H" k# Y; t) Z
;;
每一个turtle的全局声誉都存在此LIST
& f" o4 z: t$ N4 e5 M9 r# C0 lcredibility-list1 ^5 {2 n7 j6 ^4 U8 W8 ~
;;
每一个turtle的评价可信度
% v- ~( r5 Q$ k' n, a8 ihonest-service# m- [5 \6 c  B4 Q) C$ y, C
unhonest-service* y! {6 n% l  b3 X8 |8 v. E
oscillation8 V; h! I  L+ y
rand-dynamic
' u. Q2 p1 R( ~: ?. F5 f]
% r/ \& G* q  e+ t, Z- n/ ]5 M: w9 }3 r6 Y  O. j$ x
turtles-own[: @4 w( ^+ v+ V) M8 _
trade-record-all6 B7 x/ i1 c( ]
;;a list of lists,
trade-record-one组成
0 w8 Q, _- ^* {trade-record-one
; \$ l' B% G" m* ~/ X( R;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录# q$ _  O, ~! G. x( M

! c. T" b1 M% @, Q/ a;;[
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]]
+ b% V8 W, _: D7 Ltrade-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]0 J- F( P/ ]' }
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' A- ~  A# m- A/ P2 h
neighbor-total; z) J6 f: V2 T- E: M  S
;;
记录该turtle的邻居节点的数目
+ ^* f& T6 J3 ~- G* M$ Xtrade-time1 E3 N1 z  _* U) a
;;
当前发生交易的turtle的交易时间
! B& m0 k4 _) W- d1 Vappraise-give
) D% X0 S, m( t! L( j3 ]* Q;;
当前发生交易时给出的评价
& n) o, s2 ~# O! F/ u% s( Iappraise-receive! j4 t- I2 M& ?8 U
;;
当前发生交易时收到的评价+ B3 ~" C& W, o1 E3 N3 O6 @! ?- o
appraise-time
8 M, f, d! J4 a" [;;
当前发生交易时的评价时间! y4 ~; ]; O* ?
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
5 m  [7 D0 Y7 A+ Itrade-times-total- G, @3 s- t2 \" s0 V3 t. C
;;
与当前turtle的交易总次数% Q$ B1 f4 W) o% A/ L8 c8 o6 I
trade-money-total; {( o' B. `+ F& E, V4 e  u
;;
与当前turtle的交易总金额" E' z3 }8 h# t9 f, j* X# A) x. W! `
local-reputation9 q. \5 _- q' y4 U& `
global-reputation0 E: D- y, U+ s8 z% d' j
credibility! S% J$ l" v* Q* _' F9 ]* n
;;
评价可信度,每次交易后都需要更新
5 j' [; c% I6 A  Rcredibility-all
! d3 f) d& C6 g2 t9 ?+ m" e;;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! z* w  F- A9 m- @

, P+ E7 O+ P9 Z. q) X5 }+ H3 P7 x;;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 a7 G% @! [; {: t6 vcredibility-one9 t" M5 }2 [% s  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
8 D$ w& e& b: D5 l4 p+ J1 W" t0 t0 Iglobal-proportion5 p* A2 g! C- \9 O
customer
; O6 b9 `( f5 i8 X. K/ g( Kcustomer-no
' G  K& z9 [* a: [% v1 atrust-ok& q/ K; m! k" d' {
trade-record-one-len;;trade-record-one的长度
2 o; f, c# @& p& Y]  M  c  a( e, w8 G

- Z4 g& G0 W( R;;setup procedure$ i/ @# i0 Y6 z. ?$ C) D1 G8 ]
8 u4 h) {* d# w/ y9 ^/ K
to setup
5 d' e9 G4 Y( K2 s8 g5 W! \( ?4 d9 I; g: F
ca

  D8 `) N7 l" k( F; s+ @" @% r4 I  W: _6 c' W; Y9 K5 u
initialize-settings

  j) D# F2 c6 ^
- j7 @5 v6 I+ T! [" s1 I% ncrt people [setup-turtles]

. k) T" F: |  K+ c
! {% W* q3 i& w2 G7 }. }" e: G4 B% Jreset-timer
5 D. R' N8 W) H+ K

) s2 Y+ c+ M; t4 Qpoll-class

' }% Z, T1 B0 _1 j7 }) p# L0 ]: @: p3 U( p; s
setup-plots

6 {+ G2 N7 g- i6 n2 `& C  q* ~6 f$ y7 i3 \
do-plots
* f4 B, F/ l. m7 e* S5 t
end5 }/ Z  b" w" ?" n- B1 r0 T9 Z

0 Q3 G: a% V. Bto initialize-settings4 I1 X# W3 B, c3 [6 t$ G
5 m$ l/ D: Z; f
set global-reputation-list []

9 S3 R' x& g. W2 U; {: g0 ~- U/ @# ?, i
set credibility-list n-values people [0.5]

2 q% o- ^$ a/ J# m# K5 E
, Y% ~5 W& H' _/ C! n, r* O1 p/ mset honest-service 0
' y0 f8 {6 k  N, d; h" ^
( J8 Y9 f4 I8 N. ], l+ e# e
set unhonest-service 0
- l' v  w+ U* b) o. `) M

/ {7 Z$ y' H5 f! l2 f# m$ |7 |set oscillation 0

. m, v) C3 w8 ?6 I/ L9 U- h
6 b4 J) P3 G% N) u% r7 ?; X$ Tset rand-dynamic 0

  _- `( A% s' R, {; C% h8 W. qend
' G; n2 Q) I$ G9 N7 I' C6 A8 `! C) S# p0 |
to setup-turtles
, }4 f% i( k. p- i7 e! g: C3 l3 Pset shape "person"
8 r/ e$ W' p; N, ]7 m* @2 Esetxy random-xcor random-ycor
) z1 I, ]; G! R0 `, o3 hset trade-record-one []% J$ r# f( W( O+ G! v
6 H5 P3 _: M/ ^2 J! D4 p
set trade-record-all n-values people [(list (? + 1) 0 0)] : z- O  k5 Q+ o

7 M0 j& z4 j% v6 a, Wset trade-record-current []; y6 x  Q2 a+ P0 M  K( @
set credibility-receive []
* G0 b: ~, u# s- Cset local-reputation 0.5
/ |" \6 k8 m# a, L6 A  F2 Dset neighbor-total 0
" n' u9 f$ ^7 s- y) D/ O  w) A1 d# ~set trade-times-total 01 g8 X, k+ O' V1 c; i. U" g9 t
set trade-money-total 0
" ?& ^, P. t( S2 P& e6 iset customer nobody- ?& }; t. V4 p9 W
set credibility-all n-values people [creat-credibility]
8 h0 }9 [, ^" A. j- G: Qset credibility n-values people [-1]5 K8 u5 ~% e+ d& p! W& M- f* |# V
get-color
8 y- p% {5 y$ ?6 l( M

& Q# e9 j& e5 s, M1 T% y2 a$ {end
% s1 o. F5 ~* P  R6 _
& X) j' P. O) ?) Rto-report creat-credibility
& N, S9 G  r$ kreport n-values people [0.5]8 b2 d: t' |# L2 A; X
end7 l+ b! }' I9 {, O2 B

3 N/ e& i( A% G8 D* Dto setup-plots/ L$ E! t5 d7 }, R1 D+ A$ X; {
( p8 E- H3 y3 U0 ]6 {
set xmax 30

; B9 X( t0 {; I, C/ s- B: K7 k1 f' {0 z$ ~. X! J+ |: h+ z6 w
set ymax 1.0
1 U8 [$ B; W& ?% H+ B7 a

1 t# r( E/ o+ h) v7 N1 W: Yclear-all-plots
) v5 {0 w4 z$ B2 w' T% p! ]

9 y9 _: J+ \2 p2 Msetup-plot1

5 w% z* }/ `2 k2 @! x5 X! \+ k2 q5 c- d. j7 `/ F
setup-plot2
5 |+ ^$ c4 m, M5 j2 [- r

, t( E* g  i% o/ i) wsetup-plot3

) O. t* G; l# J& t. vend
1 w) a7 u* f/ s" P. M/ Q: x+ C- y9 [0 A' K% M' I
;;run time procedures/ \1 F* y4 y; T- Y8 x0 a9 j

5 c( p, j* a; T& p. Vto go
1 g+ B$ }% c* Y$ O$ [2 L9 [& s% z7 y
ask turtles [do-business]
7 ?! E% D6 u/ j# R" N3 U% o  j2 y
end
) Y% h$ d6 k: |$ `, f% L5 ?
: b7 _6 c7 C9 l) Tto do-business
& c% T- y$ f- G' P9 ]

9 U+ l* b. v3 v& o; q& O4 u; _+ _, Y* w- ?+ o) `: J
rt random 360

2 _5 j: D$ q% J: ]" l/ f+ m# r2 a  }! U0 }( ]
fd 1
( R3 w3 o. K) m9 C
+ L7 A( B3 d; N1 e* L
ifelse(other turtles-here != nobody)[
3 k* r6 B8 l, p/ g4 S2 p% n
4 x5 ]6 z5 j! m0 C1 @
set customer one-of other turtles-here

# L* @8 c- D+ r# Z  K' W2 [6 ]1 B( e8 ^' m' }- _8 e5 c
;; set [customer] of customer myself

  g/ n8 a& M% y0 }( P0 `; d( z" e! e8 p8 Z4 {
set [trade-record-one] of self item (([who] of customer) - 1)+ Q' ]! c2 R& w) N' k
[trade-record-all]of self; @& g- e1 M8 e* ^  Y
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
8 R; p; e0 P8 v( A6 }1 h

8 R4 J& C9 M8 E9 _+ ~set [trade-record-one] of customer item (([who] of self) - 1). c% k/ J4 g1 M2 f8 R. w7 s5 g% a
[trade-record-all]of customer
2 y) }- y* D6 Q

1 I& t( v( C5 [% h. n& E( [9 }set [trade-record-one-len] of self length [trade-record-one] of self
& _4 ]3 z9 R( R

4 C0 @' _9 G3 T8 r6 Z7 R5 Fset trade-record-current( list (timer) (random money-upper-limit))
0 |/ [. Z4 K/ @! Y. C- |+ L: ]& h
# E9 S' P/ \2 V  T- z
ask self [do-trust]' E: m% b% l! {( I3 `5 a3 N
;;
先求ij的信任度2 `# M3 P2 x  w* k' X3 y4 ?7 ]
4 o  [. [8 S" I3 b
if ([trust-ok] of self)
. P1 \" G+ f5 t! s;;
根据ij的信任度来决定是否与j进行交易[
# D% b5 x5 }0 r# j" qask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself$ J. a' f; n. m& Q9 C2 z
# E8 I& Z8 V" t) [/ j) z8 E* l
[

* Y, r0 D& D) |1 L# d; E) d" J& Y' V- ~( M& \! O
do-trade

2 T+ v  H1 K. g5 l0 t1 ]2 T( @) S' B7 U; y5 ^  E7 y
update-credibility-ijl
% M2 Y' i, e& B7 ?# B8 H5 [
3 a- h9 r$ ^) d9 x, U4 A
update-credibility-list7 L* f% ^( C  d8 N

2 L. U; T8 Y- f  Z5 P$ d" Q( K; N) U. ?0 a. |9 t4 F
update-global-reputation-list

9 f# X" g( R2 k2 \. T8 H  Z6 ]) x3 ^9 b
poll-class
/ D  A/ M( K$ q+ G

7 s& `* [$ a# F- C% i! M. wget-color
8 B: w' l5 B, q% p

& Q' `: z8 u% `3 @- u]]. q/ Y' \, f: C4 T: P

3 F* D- C* n+ W% P) W7 n+ e;;
如果所得的信任度满足条件,则进行交易
* F% @) l  E- o5 E& z
1 U9 U, z: \8 L9 @) S% }; {2 O( t[
5 ^$ K: @- m! m; [
  F: K+ H0 l4 [! I" T" V  P$ {
rt random 360
( l( K" w- c: E+ H
* R$ ?7 R' A" l& V- l! x2 b
fd 1
; M8 n. d  w* m. w3 a

0 P0 B( P2 E7 C7 q6 C]

; X6 ~$ A* M4 T7 Z4 w5 Z. k& G* ^* j; n7 e9 Y2 O0 g( G
end

4 C3 H! n! ^% ]( S
7 s9 q5 C1 c. {. Q' A/ r* ]to do-trust   R1 W  T; D! {! x
set trust-ok False7 H  f9 e3 A/ D0 K1 s

( |4 E) ^) t% g* B, ]" F

) ~+ [: q5 J% P5 B$ d, J7 hlet max-trade-times 0
8 ^+ s- ~+ Q" z9 S- ^foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]- a. H$ ?. O" ]! o& J& P
let max-trade-money 0% J/ C) ?6 h" N/ S- f4 {6 \6 h
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]( V$ d! R7 u7 a( [; [
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# d  n( U$ }% w0 S# e- o3 O/ C- l! B7 ~
) Z3 K1 D. Q3 O: Q
get-global-proportion
! y% P0 R5 j% y" ^let trust-value
5 U9 t: q; X, r# n; o; wlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

9 y- p$ z, @5 G# wif(trust-value > trade-trust-value)* a6 f$ N5 A- i
[set trust-ok true]; [1 ], r, H& E/ P
end, n5 s5 j$ V) ]
( }% m  L9 U2 U! Z  u4 z2 j
to get-global-proportion
4 E/ u+ P! K4 Y8 tifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
( |8 }" i2 p" U6 L: ?, p[set global-proportion 0]
2 }7 J* O9 w+ t* \[let i 08 z, @  z) w* ^. w
let sum-money 0/ }3 }% @, c. H2 B( Y
while[ i < people]! [- Z& _6 D4 ~9 G7 J8 n1 {
[
  k7 r5 B4 A+ X6 d  J- uif( length (item i6 {+ i; }+ x* v( R1 L' E' b
[trade-record-all] of customer) > 3 )

+ J# ]6 [, v; P[8 S: m9 D. L2 W9 |+ e8 ^" Z
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))$ z/ D0 H9 E2 K+ G: `& ~" V/ \0 G! g
]5 C# U1 {, p2 ^& M8 Z4 b& w
]
' b2 R9 l+ x5 N! q4 I$ [. @/ \let j 04 t% h, L( m; V' M
let note 0
3 Z7 L0 P  y, k' Kwhile[ j < people]
( |2 b5 d/ f8 `1 N  u[: [/ v$ S) H' F. V5 R! f
if( length (item i
; z. P+ A( B# |! t[trade-record-all] of customer) > 3 )

7 @* W( g* G. O0 n6 e  a[
2 ^- B  ]; I; n0 _2 s) K, nifelse(item ([who]of myself - 1) [credibility] of turtle j != -1). }  v. {/ {/ o3 C
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
* r$ G* i9 b6 \( s[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]' P5 c7 s1 n% i8 F
]# a' d/ E5 c6 k( M$ Z
]
8 @9 s  }) @/ _; ?& Dset global-proportion note
! C6 f7 \% ]8 s7 f( z5 T]
" P) m* S0 V# nend
& K4 }8 E# }% u/ M+ o+ R3 ^  ^0 f7 W4 Q5 }: v6 Y
to do-trade
8 Y, b6 `2 j1 e( g- a! e- ];;
这个过程实际上是给双方作出评价的过程
/ {- V, d! s5 uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价, d5 o2 X8 S+ l  W; q+ e# S, f
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
3 o$ p4 j& `! E4 _2 |: Dset trade-record-current lput(timer) trade-record-current
) D4 c" ?) N) m( V1 G  P% Z;;
评价时间1 w5 W: U$ f! a% I: ~
ask myself [
. {  d, m$ I6 G& Y! xupdate-local-reputation- \( E0 k9 K1 \" i' d
set trade-record-current lput([local-reputation] of myself) trade-record-current
7 {% Z4 D- M0 e. d" B]
- t- D* ^  c" Zset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
8 k4 k" [8 k# U;;
将此次交易的记录加入到trade-record-one2 Y, _: R6 z3 B' i$ ^6 M3 V( D: }
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself). A4 F1 P; I1 j5 t, r
let note (item 2 trade-record-current )2 I& b, s2 i6 y8 N" n3 {, v
set trade-record-current
" A, p# [9 y& r% p5 K(replace-item 2 trade-record-current (item 3 trade-record-current))

5 x" C/ J( ?: ]" Oset trade-record-current
, q6 m: r6 D4 \6 s" h7 x, C(replace-item 3 trade-record-current note)
/ v6 y- I2 k5 U; H" y3 b. b! _+ s
2 n6 b( i. L7 {% }
* e+ [9 w4 Q  E* {" t
ask customer [
* V  z! K- f8 s- c! Wupdate-local-reputation
; J* x, g, _, ~! k% wset trade-record-current
( c1 u$ X" }; a6 \+ L" {(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
6 b7 V0 U- r2 h" Q
]
6 t: |6 A: ^# S; y2 W* |! {8 f7 E9 Q

; _' v$ E8 E" P7 Gset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer/ Z4 G; a3 f0 e5 P" p

: |; p: Z3 N  d; A' @$ uset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
) z. d4 ]; `0 U0 G2 G  Q8 Z* b1 ];;
将此次交易的记录加入到customertrade-record-all& D$ ?% x# W6 F
end
9 [' S6 h& p) b8 ?
2 G/ v6 t% l7 r# J# k$ V) fto update-local-reputation3 z1 v/ X8 {# H5 D9 y
set [trade-record-one-len] of myself length [trade-record-one] of myself
: J$ H: y% g( f% C+ W* w5 l% X+ ?' W( |7 R
3 F, @4 r- D( Y' G1 K
;;if [trade-record-one-len] of myself > 3

& d6 ]( m) B* }2 m; _7 M9 o/ fupdate-neighbor-total/ x6 G' g7 L1 t$ Y
;;
更新邻居节点的数目,在此进行2 x, F) [% c) L
let i 3
: r& h$ v& \2 j; jlet sum-time 06 `; J6 x, W2 s# V+ c: i5 c
while[i < [trade-record-one-len] of myself]- P  V3 B; K+ t! U. K6 L
[% p0 Y! T9 r/ s8 j2 `  Z3 L
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ). x' g" w: i' `- w  `7 u
set i$ O* G* Q, C0 T5 I7 O% o; |
( i + 1)

' x+ b1 U9 I! G4 A  {$ h]8 `$ g9 ?+ R0 D# o; V1 T" j
let j 3
" f" K" H1 o( \2 M: T' clet sum-money 01 T8 Y! _8 A7 G
while[j < [trade-record-one-len] of myself]
# d4 g5 D9 Q6 L: C+ j. V0 M[8 r! h; I5 U6 j
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)
0 ^8 o9 y. A6 x( x7 D& b4 D0 Tset j
  b- \. {" e/ n) g6 L( j + 1)
! V* U6 r- h* o
]
+ v( l4 W! C- Q) zlet k 3
  D* ?5 Y3 |& J: alet power 06 z( h% H; O, I6 e- x3 ?  a
let local 0
' S5 Z, c& e. p6 I# \& Owhile [k <[trade-record-one-len] of myself]
) f1 S* H# X5 `+ P: w[. G  u& E, s# J  Y1 w8 [  V( \; 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) / L/ ]+ i" v% Q8 ~5 j
set k (k + 1)
' T7 I3 e: v) Z, N]: U) Y4 H6 q5 R* x) E2 z: D
set [local-reputation] of myself (local)
# p6 p, s9 X3 j3 yend
2 [" }9 H2 ?7 Z% g2 V/ M; I1 H7 ~% @% n% B. k$ d0 r4 W
to update-neighbor-total
1 W2 Y6 w# T3 d. V5 Z9 s9 t; z4 b& R; ~; q: X" E
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
( @( q+ ^5 q" _! d% V2 X& E# @( |- d8 J

# g$ P8 D! i3 G' Z$ [5 O( h9 eend  R. f8 _9 M- H; U/ g) X5 Q3 Y- l

& \% p& J8 u* sto update-credibility-ijl ! Y$ g6 ^+ n, ~+ v* ~+ e& R
: g5 T. y+ }$ [* ?
;;
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。
1 i! z: I  |5 l! j! Y( ~9 M" Elet l 04 e9 z$ o/ N1 t4 V9 l
while[ l < people ]
# }5 y* e! l! t: ^# k;;
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
; b7 h! V8 D- `, M- r  h[' [5 j$ v2 E1 G" e, ]* h; X& m4 ~; N3 K
let trade-record-one-j-l-len length item l ([trade-record-all] of customer): `; a6 E& F0 G  P# F5 f
if (trade-record-one-j-l-len > 3): F* D) P3 |/ ?; o: t8 Q$ 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& b2 r/ _6 ~) ^  M- X, H/ W5 J7 N
let i 3
2 \) f' P# q/ ^  h! G+ y  g! Wlet sum-time 0
9 ~1 {& I& C( }7 @while[i < trade-record-one-len]
4 a$ R2 w9 {: N* d7 }9 x& \. A8 c[
, W7 c( c, @; x# E: {/ rset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
& t# u! u3 x- R- y2 ?. jset i9 K$ n% c# S6 {1 ^" e' B
( i + 1)

6 A0 o, j7 ?9 ?]* X3 o* H) B+ F* Z* l
let credibility-i-j-l 02 n# e' w: _# m6 ~* ?  e
;;i
评价(jjl的评价)' @* [# F+ Z5 J3 y
let j 3
% [) q1 G0 E/ i# e, Tlet k 4* C" j8 Y# j, D
while[j < trade-record-one-len]) w# l/ N( @1 h! r7 x
[/ ?: f8 n; _9 W' F: s# `' I
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
3 I- _5 J- H0 e- w1 sset 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)
  w9 j8 K. N$ i, Y: z: l; Aset j# J( c! @7 q1 I7 R, \) m/ ^& s6 S8 c
( j + 1)
6 h2 b  x' J" d8 v4 B$ |1 ]9 w" ]
]" h$ d+ ]0 ~/ t+ t: t
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 ))
# a" S/ c2 r( N2 H
: p5 c! o; _, K: A  R6 I% H
( L. g8 Y+ B0 t3 R0 Q: }
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
) f5 ~# T. D3 \, Z" o6 O;;
及时更新il的评价质量的评价( x; L4 j0 L# j9 @$ ^+ f# p
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]6 K3 G# O- q2 \  P
set l (l + 1)
. t5 G0 S. ]6 _$ ~]2 j. Z: R. T+ N  Y
end
8 o8 e7 I. f9 E- i. f7 S8 a) @# B3 }5 m! ^# y" U% R  m
to update-credibility-list
6 f- v9 I) w/ s/ G- w, Z$ h2 S1 Clet i 00 H6 g/ J3 d& U. k' ^
while[i < people], ]6 ^0 u5 ~7 {" L, P3 H9 X7 o" y
[9 J# K! i3 Y+ T
let j 03 N( P, M" A1 v& h7 q
let note 0
1 V. |- g" G) Elet k 0
' s4 l# k7 F, J' D: J;;
计作出过评价的邻居节点的数目- S4 z4 i" _, f3 ?& l2 }
while[j < people]6 z5 c: M: Y; l4 R
[
: s/ E6 n+ x4 ~/ Rif (item j( [credibility] of turtle (i + 1)) != -1)
" K% p) F% x+ [9 s9 f9 D7 J;;
判断是否给本turtle的评价质量做出过评价的节点
+ R4 h3 P) }9 R9 `+ v[set note (note + item j ([credibility]of turtle (i + 1)))
8 M( @. F$ d8 a;;*(exp (-(people - 2)))/(people - 2))]
0 @5 s4 m& j6 ^6 t+ b. l
set k (k + 1)1 k# z. m' ^3 p; k8 O( Y
]
9 c' h; g1 n# t( q6 H: E$ Gset j (j + 1)
7 t6 C; _- e! C$ F& d* V]
( r7 E# f. A2 e5 dset note (note *(exp (- (1 / k)))/ k)# D  v3 S; T4 H
set credibility-list (replace-item i credibility-list note)/ w# z$ w' E% L6 u6 u3 F9 Q
set i (i + 1)
4 ^* Z3 I" p# b3 [, h+ B- l) b]5 r1 t' Q6 D! {' k
end
( Q; a5 ~) t8 R0 @8 I* g' f5 }1 Z$ j, s
to update-global-reputation-list, X% o/ L! |. Q( V3 _
let j 0: `" Q( A; s8 U* c1 |* ^! G
while[j < people]4 L$ D- }" M7 u. e2 v* B
[  q- I3 u1 [. G. [8 T
let new 0  O: v8 Y, e) a" F
;;
暂存新的一个全局声誉( g  s1 y3 `' g3 r! ^# f( X
let i 0& f2 M: ]" k: ^
let sum-money 0
+ l/ d9 ~% e6 k* |& Z: X$ ulet credibility-money 0
: l5 d/ j/ a6 {7 ~" mwhile [i < people]
1 _. m  A& z4 ]$ U' `1 ~1 y[
$ J- f" J  H5 a1 Y# cset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
$ X+ e1 G% p/ X& u1 N; gset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% y0 C- f2 _2 Q. e/ D6 Xset i (i + 1)
: O6 }- U5 A) _3 ^( ^]
. c4 |" `: Y: ?; a  Blet k 0
* L1 n2 }: ~$ \- U* W: g! x1 ulet new1 0
  Q5 H- z4 B  N9 I! s2 }5 F1 M) Xwhile [k < people]
1 [' D$ u* [4 G, R# p/ t[5 `6 z6 [& H5 d: e! x' v' N% K% U2 c4 q
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)
: Q/ n. P, W$ l" Z2 eset k (k + 1)
! `" U" A0 f4 G( W]
# {" L; c6 H8 jset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) % N3 e5 }+ r  f  i6 o( {, G$ T
set global-reputation-list (replace-item j global-reputation-list new)/ o4 S; L' ]( }% X
set j (j + 1): c: v4 y6 c: s9 t- u
]" f" P7 c3 k3 D0 H% s
end
( |. o- {  r+ h* I* d4 B
4 O- p" X1 H1 U
- M8 s: T4 M; ]" n1 O0 W4 |2 ?9 u- y- y  H. A( O; q! Y
to get-color& x1 C7 p5 \0 O% {/ Z
9 c1 _! l* F  T7 c% M5 O$ V
set color blue
  M- ^3 r1 n4 D2 X6 p2 O
end
0 Y! W9 i1 m$ ]7 K+ B$ E+ M
: F# C$ b& b4 D. w8 |to poll-class
/ e5 Y9 u- r! G- S! N  Send
* N; U2 `3 Y7 j- M" [0 ?0 {) J$ z
. _5 ]; R! @. i3 O$ wto setup-plot1
9 R$ T$ R! A- X! f& P3 s$ k  m, t4 B! u7 E
set-current-plot "Trends-of-Local-reputation"

, b; I6 Z$ d6 }- h& K! r' S' Q$ Q2 n* W% o( r
set-plot-x-range 0 xmax

4 @* |' A; {+ a7 W% H: i1 ?/ o# V: E( W; Z
set-plot-y-range 0.0 ymax

- k% D7 Q7 I% u. ~5 h9 x  f/ B" o+ a! jend! Z/ W8 V/ O! q6 h

4 k* `$ R" }, f! Y: v1 Jto setup-plot23 i1 K# q! \! ?* n
7 M5 D8 B( ^0 d$ s
set-current-plot "Trends-of-global-reputation"

. G/ v" ~8 L$ l9 E
% S, v$ z' S2 A; E4 |set-plot-x-range 0 xmax
# e+ x4 v/ y5 g
( k  U# C  @0 |1 i7 J. I- q1 i6 ^
set-plot-y-range 0.0 ymax

$ c5 |; }2 T# t& o! e  U' m: p& u; \end& ~; a  J4 |6 j
8 l; w! t8 h( r
to setup-plot3
9 y( d* b2 ^" ?; z
" d3 R. R; K- i1 j/ J1 x, d* xset-current-plot "Trends-of-credibility"
7 v& Z  ~5 _" v5 h& g# g0 ~
( t( o0 `, {/ P( l
set-plot-x-range 0 xmax

) {, W8 Z( q  }3 a- d
9 K2 x$ U" v$ S/ H) g# Aset-plot-y-range 0.0 ymax

# O5 }! W& Z+ N8 E$ u" N5 send
  }2 r$ s4 n) y  d, D
3 ~* q$ j; c, M7 @% q# D, b+ hto do-plots
% G8 n7 Q  u4 l9 i- c# n0 a; \set-current-plot "Trends-of-Local-reputation"& v) {$ X& Y& R
set-current-plot-pen "Honest service"
0 j3 @$ Q, e+ Aend
. S; N' e! E% z- o1 c) d/ b5 ]% s5 L. H8 C, b+ p0 P
[ 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.
' V! X. ^7 T/ W! m+ B; K( `0 j  A% c; p$ k' p' [
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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