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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:
( f3 Q0 L# c1 K. q6 w9 a$ qto do-business ! M; u: a$ m& b& p  _( N
rt random 360
6 Z) }, q- z$ B7 g3 p5 f, B6 @ fd 1
/ f: g% w& }/ {( M+ [: A5 H: X ifelse(other turtles-here != nobody)[* Q. X  U9 Z8 c) F
   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.! v8 r4 p' J; T( n
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
4 M1 @4 V; M6 ?   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
& g' m; r5 G' z* q7 g8 m   set [trade-record-one-len] of self length [trade-record-one] of self
" j/ f: j. }: H0 [   set trade-record-current( list (timer) (random money-upper-limit))
: O7 }6 Q! W7 |: V% ^; x5 r% K& A9 D) I8 S
问题的提示如下:5 {. N- f$ b3 S. A
& L3 C% P$ z) J
error while turtle 50 running OF in procedure DO-BUSINESS
- s7 P7 _, r6 _# X9 z: i  called by procedure GO
  j, r2 n0 J4 D% O& G3 _0 MOF expected input to be a turtle agentset or turtle but got NOBODY instead.2 d7 Y/ }# e1 E  J) x
(halted running of go)  \* ]( q; @2 J' s  O

' U* }+ G# k/ d! L6 M( I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~~
, c% E! X- X4 F+ k+ ?: ^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
8 V4 M% k# u+ a2 v( G) F) Yglobals[
4 t& V- c& P( F% ?/ d' J% Ixmax% r" L( k  @8 Q/ O. w
ymax
5 I% z1 \" t  t% i8 P; Q- eglobal-reputation-list( G- z0 F; ]; c8 a( g+ Z; K  Z
# @/ @6 }: F# _. U0 r2 L
;;
每一个turtle的全局声誉都存在此LIST1 a9 t& ~" O" `" t
credibility-list; i" O1 I, h' N
;;
每一个turtle的评价可信度
2 D7 ]9 r7 J$ U0 W4 A3 d& c( o/ qhonest-service( w" S$ m; Z# d' R; ]- d
unhonest-service/ i9 @5 X# E, s) ?2 B
oscillation1 a6 x1 @- k. N6 ]3 R
rand-dynamic
. c3 P& \, ^6 _3 e3 `% N4 K+ R# M]
; }  l3 f3 Y* q" X- s- E5 h; N. i1 I7 }0 T3 X' x
turtles-own[7 K. k% ^; i! D5 y3 W, Q) g3 G& G* q
trade-record-all
+ p) ?$ S# x  o;;a list of lists,
trade-record-one组成2 ^+ t) K* S' W% X
trade-record-one
) Q5 C0 s7 P& l1 R; t2 i6 [" {;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录( I$ N- C: S$ \2 P; Y

  k  Z7 Y  @/ h;;[
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]]% Y4 c+ t, H' ]; D" n
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]) B$ M3 a, h# A5 Q1 r  |' h
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list1 c; v( c4 Y6 d7 `
neighbor-total
% w* k6 P6 R! I;;
记录该turtle的邻居节点的数目
& W; c, x" b- a( l: F. Ktrade-time
5 W$ h) x! v* R  U2 R;;
当前发生交易的turtle的交易时间
  F2 Q* p  h- ^4 H' oappraise-give
) t' A7 f0 U+ c4 N8 R;;
当前发生交易时给出的评价; X& |  f5 |/ s
appraise-receive+ L: I1 W% k/ V! r$ a, P
;;
当前发生交易时收到的评价' O' m7 Y6 m# L1 s1 ^
appraise-time* i! h; p! w% X) c
;;
当前发生交易时的评价时间
; T( w1 W3 z/ xlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉9 F2 O% ^. D3 @6 o. X8 P
trade-times-total
4 J6 Q; A( _2 s6 }2 B;;
与当前turtle的交易总次数
6 H' ^: m  q0 @. Htrade-money-total
' m3 \. O( C; Y( Z5 k/ ]7 I;;
与当前turtle的交易总金额, o. b* H( B5 e% B  E4 E5 t, |8 c( l
local-reputation1 s$ n" a: ?1 _1 |; s
global-reputation' [: K9 D: ~' D
credibility0 I5 T9 y# t! |& a( Q
;;
评价可信度,每次交易后都需要更新$ g$ z8 M& ]$ r8 [5 m9 D/ D# g) r
credibility-all
3 {" q) N: j7 x: g1 \;;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
" P2 @/ m( _, }- g& t2 T+ O9 @( e' B& h/ i/ Z* W+ a4 v
;;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
5 I* F  {9 l9 P/ R/ {; j6 S8 Ycredibility-one9 F- ~# f0 u+ W- _- S
;;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
, |: L; T! f' e/ dglobal-proportion  z' M5 t' ?; l! |5 d% O
customer
$ x( v7 d6 F% @/ k. A# I" Dcustomer-no
. Q3 y0 |  F4 R6 \trust-ok1 l. y1 |7 B8 H2 a. J
trade-record-one-len;;trade-record-one的长度( P1 |% g" \: G( K8 x+ V0 d1 m
]
; @- b- M; `( _3 W2 t- O3 a4 K/ q9 s6 F- u3 B1 n6 i9 z. C5 V
;;setup procedure
5 a$ E; O2 T' e2 M7 t! g  x* |8 i, b6 ]0 p2 c) \0 [) \# N% y
to setup# Z: o* [1 a! H" t

7 K. B& ^' y/ O9 |0 I1 ~- t* T; ~ca
$ G8 L; C; u  Z& t. V- |
7 q9 T2 Q: w  v! f- _5 L
initialize-settings

! R6 P. x, r+ [0 H
1 k" n3 R! W2 ccrt people [setup-turtles]

* l, Q! F2 I7 Q8 A& z+ C0 E# u# t: A  W: a
reset-timer
: e) }/ b$ Y% B/ \, x8 e7 S

. J( j( t3 Z) gpoll-class

  N  v# r4 ?1 b% J$ \5 K* ?: G% X6 ]1 E
setup-plots

0 O! j8 T3 L7 x" d, K. z
& X& o3 s, l& w* tdo-plots
2 G8 h0 @$ e! ]) A" S
end* Z$ o$ B/ F, Y2 `9 G

; l/ ^0 m* E5 W; C$ Vto initialize-settings! G- _8 e& m  J5 ^' C+ K6 D+ L

4 [! m% G) C* p; Wset global-reputation-list []

4 I! N! q5 }) s0 p  H0 t4 H# j$ D& ]' M- ]5 B. }1 a" B* y+ W6 G
set credibility-list n-values people [0.5]
1 ?' F0 l3 S$ a+ S/ N! {6 p  z+ u
) J0 J- m8 Z( M; C' f% f
set honest-service 0
+ S! I( [; o0 M

$ R$ G! P9 G0 [  q+ G5 Pset unhonest-service 0

1 Z2 V6 i& S6 N* ?" \0 `2 O0 w, C8 V# f$ E0 _7 q: \  W
set oscillation 0

* K3 B" A7 D8 N9 @, V3 U' z# c, K+ s' ?" Y; _" m8 Z
set rand-dynamic 0
6 Q3 f: _6 N( H/ m/ x! A
end
8 S- o. c) h. o: s1 C; G, J1 i6 P6 j! x& q4 T% V7 T+ V
to setup-turtles # n( E* U# R# ]7 _& ^) d6 }1 K
set shape "person"
* a" l3 t  f: k' X9 l% Rsetxy random-xcor random-ycor( L7 w; y: J) l0 p' a
set trade-record-one []
: ~$ l4 w/ D! K* x1 K
4 C$ U2 m" ?5 q1 {6 y" _4 U! T2 `$ r
set trade-record-all n-values people [(list (? + 1) 0 0)] $ I" Q! ^' A# C* q8 R

' j& W' i) o" ^set trade-record-current []# t: ?" E' A: W% j* L  J: y1 \
set credibility-receive []
& d% p' O3 _. A/ Y' S0 Bset local-reputation 0.5& J% z1 |6 n/ M. g) g6 P
set neighbor-total 0, p8 d' H1 h" C" b: I6 g
set trade-times-total 0
( k2 J9 {: \/ J. H( V  _set trade-money-total 0
8 _% b7 i: e8 X  s/ Z; r2 \3 qset customer nobody
, R/ |! O5 ~/ |" cset credibility-all n-values people [creat-credibility]0 y4 p4 O$ K: u  \$ q5 d
set credibility n-values people [-1]: {! W" l8 S3 q- b# K
get-color9 E5 O  L- b# o* P# X% a

  y7 Q1 `6 ?0 K- ]end
. C  n: i# [1 V$ }" k0 {7 Y% C  O# G2 e, ]) p
to-report creat-credibility% j1 i+ U4 ?/ T8 A0 a! B
report n-values people [0.5]
) N  q* t1 j! z: a2 y  hend0 w* r( {, \: t- u
$ M- m" Q# P5 ?6 \1 t2 T0 E$ J8 c4 Z' R
to setup-plots, p* Y7 z8 Y+ N3 H* D- U
2 q5 |6 B3 i: s2 ]3 K8 R
set xmax 30
( |$ {1 [% _6 H+ W9 ]2 C9 |7 z

. P; Z7 I6 X7 s  [set ymax 1.0
5 d' W- f* r) b' q7 }: v0 T. f' B$ W
0 u3 I2 u# l: S. B" T$ |
clear-all-plots
1 N# J) _5 f; O. v$ L0 k
& Q) A3 M% p+ l7 U7 `1 n4 U
setup-plot1
& ?1 }8 d; Q8 Z  R  ]" f9 f8 _

# O' g- z0 G& t, S" f, \" `setup-plot2
3 Y  x" f$ P5 v- E0 ]# \! J; u
! Y: e, y6 {/ J' F8 ^7 [8 O7 E0 Q
setup-plot3

3 e* }2 f6 R: A4 I% M' n2 Cend0 ^1 E: v; ]2 k  I
! s! T+ \6 N) t
;;run time procedures
, y- X+ k! y+ y9 r' j$ o1 l* K# ?% ]) ~7 Q$ l$ b6 t, }4 L
to go
( ~' v! l; [8 @5 ^: [
: F) B. g4 C9 x8 [# m+ U$ m2 Yask turtles [do-business]
+ v4 g; K# V/ T* v  N5 I
end
$ ?3 c9 ?0 R1 v9 K- n7 Z% M. @
7 ^8 k6 @+ k: e9 w2 z2 Hto do-business 8 \% T: [$ @  y+ J6 g) v
4 a) e8 ]& l( {) h8 T0 }4 I
9 J9 ~& q9 e3 D
rt random 360
' L) p4 N0 ^2 p* Q5 S( N8 Z- @
+ k* Z8 L# W1 h  d2 w8 |2 g
fd 1
1 v; N6 D' t# H2 f/ e3 }$ A

$ t: ^, f2 L$ G! Y4 W; k, h% m& ?ifelse(other turtles-here != nobody)[

8 h; N3 S0 J1 x, @# b! ]
, B: V  Q/ W" rset customer one-of other turtles-here
2 `/ ~* R- b9 F5 Y) S2 p

8 e' Q; W# D3 V/ Z;; set [customer] of customer myself
- h8 M) S/ K+ B
! M/ Q/ O6 R: ^- f# q$ T1 Q
set [trade-record-one] of self item (([who] of customer) - 1)
" K+ ~# g' g9 q% O" b2 f, O# ?[trade-record-all]of self) O, U2 f+ Q$ |9 w" g
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
; ?6 D2 w1 C+ D) E5 J
# M) y+ i) H# t8 [# f: ^
set [trade-record-one] of customer item (([who] of self) - 1)' z/ q5 l9 `& r& m
[trade-record-all]of customer

4 x" J! E2 G# d; C* g: A: u! g; H  ^7 m: c% E# b
set [trade-record-one-len] of self length [trade-record-one] of self
, l- {$ L3 M' [5 R: u$ F

  v7 K, L& Q$ q/ W# f" [( `set trade-record-current( list (timer) (random money-upper-limit))
. I$ S# b- p! K

4 F, P) d$ g' F9 P1 \ask self [do-trust]
! a6 J* ^9 l; w;;
先求ij的信任度# @$ H' _  r  m* U/ T( D6 C: S
$ W# Z0 ]* S% F! L4 ^# R
if ([trust-ok] of self)9 x( z( g/ Y) Z2 f! v
;;
根据ij的信任度来决定是否与j进行交易[
- W9 i7 ~9 R3 q3 \: Z) z( Xask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
1 m2 a$ Z" @0 T  ?+ A6 Z5 N0 s8 ]' ]; T5 h; d( ^3 W
[

. f* e3 b9 m( u( c% w. c, u4 F8 q6 |
do-trade
) J, M) K+ w! m% F0 P, \  t

- Q- H& b, L: l. K9 Bupdate-credibility-ijl
9 r) S' g' @4 O  M# _

8 A4 I& E1 G5 yupdate-credibility-list8 q5 v* v% R7 _; e' z

0 Y' u- }( a8 K$ V1 b$ ]* {4 i8 u. s- [" u6 C0 G  X1 M
update-global-reputation-list

; q0 o- m+ J! V, b3 r  u/ Q# x  B% A( N3 q
poll-class

1 n, Q+ H4 e0 z; T& G
5 s5 C$ u$ Y8 }1 q1 bget-color
/ w8 Q+ s1 {3 c( t: I

! g. e  u: i& k0 D]]
8 N* U: @- t! m: w2 Y5 f, B, B- F4 N
;;
如果所得的信任度满足条件,则进行交易
( {& w; z! Q0 F) w) R& M3 Y1 Q8 G# ~
& f8 x0 l$ P5 a4 X) p[

5 N/ H" ]: u! ^2 c8 a9 r5 r% @5 k) G; l# o4 M5 g
rt random 360

" i6 a+ H' A2 g; S; H7 g! m* R5 B2 p0 w' y# R
fd 1

1 X+ n7 C) h1 I8 w+ P+ H8 w7 Z& \) W. t1 f/ m+ S
]
3 s0 s1 B3 t6 |1 j$ V6 t9 ~

- _0 o6 ]& X/ X" a% w+ b: C$ \end

1 j1 ?# u% |0 @$ o. s: Y, w1 h2 d' c
- e1 u- u, D: E6 h# x0 Vto do-trust ! p- {( K! t  i' l+ e6 F
set trust-ok False
6 C2 M1 e( M: `5 D* R7 _0 }/ ^. S: [

  |. y) ^) h: ]* q$ X+ _0 z) V, Clet max-trade-times 0- F) ~+ t2 D' h% f
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
, E0 a# J! n% V( t& @let max-trade-money 0
/ m- M/ H7 B+ V) a/ t0 `& yforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]* @) V5 N7 `* Y" @9 \2 ~. S
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
/ p& w9 {& m1 W5 o8 Y
, [! Z: n7 {6 s: [! q$ \% X

; E2 W' h: O" Z0 wget-global-proportion
$ _0 H8 w4 r0 ?& Ylet trust-value
& u0 n! S+ |( ~4 k2 ilocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
  D3 k$ s) |) o  `8 k
if(trust-value > trade-trust-value)( c3 F* n! O% Y* p
[set trust-ok true]: D* R; V/ T. P' }9 V% e1 w
end
4 P$ M5 S, x2 L' J  I/ k+ A, b0 v, h" \1 D5 }2 z. X& C
to get-global-proportion2 q0 M5 z; V% _* o
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)( p$ t8 P0 ~$ Z8 L! C3 L
[set global-proportion 0]
  o1 w" V6 C2 U" |+ M) F[let i 0
; `8 ^+ g6 e5 Q0 ?  s+ Y& S8 \let sum-money 08 U3 t2 e" p: I# M+ w
while[ i < people]
+ s$ F# j3 h; J  }% X- C[1 G+ G$ r: y' A6 O0 L! y
if( length (item i* I* T$ I) ^, M/ A5 f  m8 `
[trade-record-all] of customer) > 3 )
3 {0 q' \. I% d+ u/ ?
[
2 o1 e% g) }5 f) a; }( Aset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
7 u2 ?- W# Z4 X/ Z. H3 {+ u& J$ e4 C]
  u: `1 f" o9 v1 \5 ^+ S6 A]
$ C$ |: @$ `" k. L& `+ slet j 0
" p$ p+ |' E* i; \1 d2 h( Ulet note 0/ k9 m" b: Z/ a
while[ j < people]' {( ?& ^2 i$ y* w  h4 w
[
) _- y0 p: i  t0 u  Cif( length (item i
) l- e, n9 I, H" J8 k; R) d[trade-record-all] of customer) > 3 )

" K2 a+ u9 X2 f+ |& }[. o- x9 F0 [9 D6 K9 t7 j) C
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)% c* j9 N' D1 V, E( ~: A
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]% V1 k8 y" j3 a, t3 H8 B9 L7 g6 W
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
) Y2 P/ o4 g* p* }2 f]
8 w3 i, E9 c& R$ m# ?8 ~]
0 L+ F! W8 \& Z* _set global-proportion note
0 U* S' v* F$ u. t& c]
0 Q4 R( Z" d" Z: z+ ]# xend2 R: Y' ~/ N/ o/ f: D; B

7 a3 G# l$ j. b, Ito do-trade; K5 L% E. X% ^: B  u
;;
这个过程实际上是给双方作出评价的过程
8 ~3 }2 W% r% v7 _1 Zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价  L5 D* Q4 U% ?5 d
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价& P( L9 \& D5 W, c) U  L
set trade-record-current lput(timer) trade-record-current
" e' K2 p. e8 X$ I;;
评价时间
5 d% n+ f8 p/ I- X# p! gask myself [
. L) \4 C- b* y3 eupdate-local-reputation9 [4 g1 a: w$ ^' g. i8 f; m- o
set trade-record-current lput([local-reputation] of myself) trade-record-current- F! E/ ^$ i! \2 i+ r2 p8 ]
]. ^2 ?, i- p8 u2 |/ S
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself: N, X! y/ O3 x( l+ Q& W0 X! n) q
;;
将此次交易的记录加入到trade-record-one* Z1 M* }0 H# ?8 C' i3 w1 h
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
0 L5 x- c! `- `1 o6 H! Olet note (item 2 trade-record-current )% U0 S5 m  @2 b& |* l7 L7 m3 p' K% _
set trade-record-current
7 T  f! E: p2 B! H( U1 C(replace-item 2 trade-record-current (item 3 trade-record-current))
; o! T6 W, Z% e1 |' o# |! `1 G
set trade-record-current
5 B5 \3 D/ d7 P5 l, S8 ]+ k) b) b(replace-item 3 trade-record-current note)2 e& G4 `) X. T7 j4 j1 u. D: r
- @- s' M4 e1 T7 b3 N8 H4 ]
# n  _: u- R: q6 T, w) J/ _) [
ask customer [
; x& u5 `/ Q& G7 G" W0 Hupdate-local-reputation$ y* e! r% V9 ~! [8 _5 `7 @; n
set trade-record-current
5 z1 C4 m5 u! z1 x(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

, i0 v# H& M( r/ z1 \* L]4 \2 `$ A( ^1 N; G0 k
4 X! G# x4 G+ e; f

  D0 \+ I4 Y, A* a. R' lset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
! G4 @" Z# G8 {4 B( ^& j

, k% J  V. [; q4 @1 A4 Z- @set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))/ b6 c9 z4 v6 M% V2 G, O
;;
将此次交易的记录加入到customertrade-record-all# [( p3 S. z$ _2 A7 g1 v6 k5 y
end
6 Z# Y9 ^$ T9 E/ n$ `) o! z4 C
, R; {& O" R" ]" z- F0 {to update-local-reputation
. v7 e& N1 [% C$ o" z0 Rset [trade-record-one-len] of myself length [trade-record-one] of myself- v/ E6 z4 D% Q4 f7 x' U+ E4 r8 f

' Z# j; g! }8 N. e! E) o' Y9 e- H7 K! D8 t. b% p3 b; _
;;if [trade-record-one-len] of myself > 3
; _8 q; p5 z! Z% P
update-neighbor-total
( f+ }- O3 u6 G  e: H;;
更新邻居节点的数目,在此进行
) d5 U" q- N* h. C: olet i 3& A! B! ~  ~" j/ o; j
let sum-time 0
: ]/ a! s, X+ A' ^7 c9 y& ~while[i < [trade-record-one-len] of myself]
/ j8 d3 M) _- a5 |* e/ t[
. |1 z4 R) x$ W. |  z, iset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
0 h/ [& h, c2 s* lset i0 V0 v2 V8 X6 b
( i + 1)

% c. g1 y  T! l* {4 l$ K]% K9 w, q4 R' w5 x
let j 3
: c' h. ^! C& Z, J: P9 ]( Llet sum-money 0
* p0 G* x6 q. [& Dwhile[j < [trade-record-one-len] of myself]
. C" D, _8 v) _0 V0 v( B[0 X/ a! o  f+ w" t
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)
3 B+ ^) ^: d1 B7 C- q, Dset j
% D, P/ R& k7 f+ p( j + 1)
  `# |+ @6 o6 {# Y* D
]+ F- o, ^- [+ k6 D
let k 3
( g  {( I0 m1 f5 T, q& U% f2 ^let power 07 b# L# n* z. Z  E5 X4 O& h0 \* q  N
let local 04 }' }1 O# W4 G4 y+ ]+ |1 q
while [k <[trade-record-one-len] of myself]
# p( z) p5 \% G9 e% @( v. e[
" V, W7 S/ Y+ J; P/ D4 \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) : t+ v' O/ C0 }& }& I$ Y
set k (k + 1)/ N- j6 r. i2 y
]
* k; @; J& b4 p. u, kset [local-reputation] of myself (local)2 {# v& p1 V5 l
end
3 C" g; Q3 c" U$ ?: H# e$ D+ ~0 D
( }% g# p: O  }9 J8 F) v1 V  ito update-neighbor-total2 r6 R0 s4 I  S7 }0 b9 w

0 u' o& [9 f* D$ h9 n0 cif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]! Z/ H+ {! O- u5 E
$ x- t( y  t% c5 X
% R1 G0 e' i7 C( Z& w
end
4 r. v: C- I" k# @9 P2 ]' x0 v. A/ E- j( g/ J
to update-credibility-ijl
- B) J2 {5 a, v# L. E8 y, U) i: p
8 w& ^. K+ \/ W  k% d. w;;
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。/ V. o' j9 j6 N
let l 0! F& m& c3 q/ |$ g
while[ l < people ]
3 j8 n  x, F7 J& C;;
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
: I2 b# @2 ]9 G3 ?% `* w$ y[
  l2 y* {  m  x, Ylet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
' l( p% B& `" Yif (trade-record-one-j-l-len > 3)5 M) m2 `8 @5 y4 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-one5 |1 a4 u* L4 s
let i 3
. L4 x) ^# ^* @# h$ q; Jlet sum-time 0/ J$ I0 g- K3 k9 g. s$ V$ e& ^  B  P8 ~
while[i < trade-record-one-len]
* F$ Y* O# B) X5 }- u8 F[
, ^, @) W* k1 |* z2 d& W4 |set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
' k2 L* i3 H( G1 wset i
. k8 E' U8 @) O7 R4 ^$ _( i + 1)

* C; A6 S6 s7 k3 G" D3 x]
, M5 x# e$ q% q5 q2 Ulet credibility-i-j-l 0
/ g. g" V  H8 }  X/ F  t;;i
评价(jjl的评价)
! T3 ?$ L5 D" L& f5 Llet j 3  s  U! B  M  l' M/ Z" V' L; w
let k 49 B; g% c# E9 o; D* _" I
while[j < trade-record-one-len]
: E$ A3 n2 h, R: C9 b- g, n5 |+ R[) c1 }2 r2 a  F, J# K
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; @6 _% R" r1 p6 p( y& V( w
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)( r# y$ H) [: X$ O5 b. n
set j
  l2 ]' A! O/ u- i9 |, j  D0 s5 ]( j + 1)

2 L! w6 [( u' m/ S8 L]/ V+ Y7 k- i7 J7 P2 y
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 ))6 b' T3 ?8 B; J/ b
0 t$ I. Z( ^- E) Y/ T% Q* z
) C1 o7 r5 z: h
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)). Q+ L3 w" Q+ A
;;
及时更新il的评价质量的评价
. p# k0 I3 ?+ H8 hset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
0 n8 q6 ~2 R- D  ?+ v# k; Cset l (l + 1)
& R! |$ D2 M; [& m+ B+ f. p]' ~- L& c% l: h# @$ D
end- `- g/ O/ |6 h% y. A+ Q
, O1 H& _/ H9 D( S2 r0 D" `
to update-credibility-list
- Q0 @4 H& q" ]let i 0
- u' `, t( R, p1 l: I/ n: T( ywhile[i < people]- R% f* h/ F! g$ o9 |' ?" I7 d( T
[
3 e7 P' I' l" A9 `2 T6 Wlet j 0
" r6 p" `* d1 ?1 {/ W, ]( Llet note 0
5 H* I) F+ y, Plet k 0; a+ j3 g4 m" o% g) @
;;
计作出过评价的邻居节点的数目
$ o! g% D3 G) `! h3 Twhile[j < people]
6 M1 w- d) S3 Y  e1 E5 r[7 H; t+ ^; r% b5 F
if (item j( [credibility] of turtle (i + 1)) != -1)
! C* x- ~3 b8 x+ n/ p;;
判断是否给本turtle的评价质量做出过评价的节点
: I  z, n9 J4 C* Q[set note (note + item j ([credibility]of turtle (i + 1)))) X2 N( f0 m* G" Z1 J
;;*(exp (-(people - 2)))/(people - 2))]
* H8 H( [3 b6 j5 ~
set k (k + 1)
! D/ r% Y+ u% H- G  A. D]
* O5 N/ I! T$ I: S8 A9 Oset j (j + 1)
5 @1 c% P. w9 l4 |( M5 D; Q6 z]
0 n6 H3 P! E4 _set note (note *(exp (- (1 / k)))/ k)9 @4 l/ \0 W0 C% R. W9 t
set credibility-list (replace-item i credibility-list note)3 p, J( q$ E! `6 k) r4 S1 ]  L
set i (i + 1)
0 ~3 M" Z, G- n2 A' D]
1 E' M* n0 I: g. Kend
' w5 }" I# e' ]9 U$ N% s, m. y2 T+ F  G! X
to update-global-reputation-list+ v3 j: O4 L# Z& K% \
let j 0
* N1 N) U) r! |) ?8 wwhile[j < people]
1 [7 e0 r5 M" ?+ i4 w9 C4 ~0 F[
3 ?+ j5 c- L$ H& \& Klet new 0
2 x" t5 p% E" `7 H6 @;;
暂存新的一个全局声誉
% A  R- o4 V3 a& M3 g$ B, y- Wlet i 0! P, _$ u( }* N8 y; |; x( \6 k; C
let sum-money 0
* q- \( f( I; T) u6 i1 ulet credibility-money 0
- ^# S2 y3 o1 L4 D# r5 uwhile [i < people]
3 d. @* C1 U4 k[
. A2 ^0 \% P1 A$ K, |set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))1 G7 ^5 r  d" W* T* X
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
- E# h% O. q0 f( @  |set i (i + 1)/ Y9 j+ c" I4 U5 p% s& L$ [
]% ?3 T, ]0 ^3 T
let k 0
* M! n( E6 O2 |' ?let new1 0* G& E. r% K7 F" P5 k
while [k < people]
( e) Z  F/ l- J, a6 m" X0 S[
( [+ V/ v: x8 [$ n; D. g+ B% pset 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)
* a  z" \! C+ L- x4 Eset k (k + 1)- t* ~) M' i8 ^% R( P+ {" l
]
9 m9 t* ~5 V7 J7 G2 gset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
. T  x& t) i% ^set global-reputation-list (replace-item j global-reputation-list new)# Y2 n1 A0 m0 m6 A' ?0 {! B" `
set j (j + 1)9 P" i; ^) i0 z
]7 B+ q# {3 I- A0 v
end0 ]8 [7 ^, m7 r1 p  V5 N: o6 h+ ?

( b. ^% P0 i8 ]; s4 A* m: {& {% g7 ?; v/ h( p+ c* M  O5 E5 \& r# J
  q$ b: r0 V) [1 z" p
to get-color
) n7 H: j& R- _, w
) t; L: }+ `0 p' Gset color blue
) K: I  c. Z+ K6 P1 d1 |2 P3 P9 C
end
9 h0 K: ?- J4 f- Y  x4 l, ], Q' T& X0 s
$ ^& c9 ~3 Q8 b; I# P3 T% {: _; ato poll-class& A2 O' \) c5 Z. h, h. m
end
1 |" p/ Y* U0 N, }: K
: ?. O- Q& O' J  O4 m, Tto setup-plot16 L" D9 K6 {  i; m  u" z1 E

4 r! f( }" v* e7 i7 x. Pset-current-plot "Trends-of-Local-reputation"

: [0 ^2 x% V- w% B0 W5 h
/ {, o0 j6 Y8 @# Y" N& }9 E5 wset-plot-x-range 0 xmax
/ l  p) _5 p6 K7 ~- _( f

5 \5 ?: W% N7 ^+ v1 R5 j. Wset-plot-y-range 0.0 ymax

0 x7 y$ _) @& y, o- zend  ~' i5 y: @8 z2 t
4 K( p# G. l/ W! A
to setup-plot2
& t+ ^) N+ f  |3 M. \0 x# i# E( g. R6 S7 _2 l
set-current-plot "Trends-of-global-reputation"
' _0 F$ c* A3 v$ }9 O3 s7 n$ q

3 j3 H% b5 v" x+ E# N8 Yset-plot-x-range 0 xmax

; v/ O+ ]1 V. j6 Y+ r
  a. N/ w. z4 E) a0 Vset-plot-y-range 0.0 ymax

* y: A8 U( i0 {: Nend) v3 Y: y- a! i: B- L9 _1 n

& j7 O( q9 y, x2 y0 Ato setup-plot3) l. c* `- p  S' M
; I* i5 X- A/ ]
set-current-plot "Trends-of-credibility"
. z$ @) y, }9 I$ Z9 Y. C7 T# N

8 q$ I( W/ R" P$ D6 U6 Y2 Pset-plot-x-range 0 xmax

9 [8 \2 h  X5 O2 m: \
* y8 d5 Q$ P9 Y) |0 j, mset-plot-y-range 0.0 ymax

4 ]" T5 e  S3 T7 [# Q$ yend* a0 B) w4 k' D( G
1 E/ D0 l0 Q+ ?' I% }) i" s
to do-plots9 n7 @( Z9 v/ N6 K
set-current-plot "Trends-of-Local-reputation". g3 a1 D6 @0 r. `
set-current-plot-pen "Honest service") X+ l$ E0 D; t% F
end
6 k2 n  m# f* |' ~, U' O: }( q
' T  P; ?8 K' c' [$ `+ j[ 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 [) d( q! r: d. Y- M' B7 B7 {0 T/ o: a2 N# \! \6 u
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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