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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 o- T, k) gto do-business
' }7 y. W0 l7 m0 x7 Z rt random 360
2 S8 Y% p/ M/ w1 W! p# q' O; Z1 Y fd 1
% I5 `. }9 z# P4 q& J% U ifelse(other turtles-here != nobody)[
5 i& w  j) T- N3 H- }, f. o; V   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.# R8 h4 H5 g! t( i& F, B& u
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
; A) f/ I# G3 e8 t/ @6 H) m' H   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer, E/ v" D: `1 f& z# @; D2 d
   set [trade-record-one-len] of self length [trade-record-one] of self
5 W5 e1 V4 A9 @' y) C   set trade-record-current( list (timer) (random money-upper-limit))4 ~5 U( @, y5 k- P
1 l1 E' Q9 k0 a. c: r
问题的提示如下:
' f6 n5 H+ o& L
, L, `' x$ V6 q3 {5 ^4 \. derror while turtle 50 running OF in procedure DO-BUSINESS8 e, o: ^% z, ^' \
  called by procedure GO( [- v- w$ J6 d
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
4 Y  o: x/ _2 D  H8 a6 b; b& l
(halted running of go)3 r% L% d! E  G' X5 n
7 L2 m, N3 v% L' r( Z8 e
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~~
/ o5 N! O3 |' W/ f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, x/ \' G; Q6 V4 X5 `% w
globals[
' p" h  y. F3 @9 _% r4 e( Kxmax
7 s, A( _4 {7 l& o! {ymax
  o% S! ]" c; l. o  g2 z# w9 Yglobal-reputation-list
4 T; D2 h: a  N# _+ a( O! X3 m* P& i, |
;;
每一个turtle的全局声誉都存在此LIST
( q( h2 [. q# ?& G( E7 y/ u7 M3 Scredibility-list# j7 o5 ?# p, B
;;
每一个turtle的评价可信度
; O  @6 X# S: s) N8 u4 R8 ^/ Lhonest-service
0 X6 G6 _& w" X5 L6 e; Y6 Runhonest-service+ M8 c) ]5 b( w4 ?6 D
oscillation
( ]0 J0 {5 h9 |1 qrand-dynamic4 D& I; G) Q9 ^+ K# u. ?
]+ ?3 E; B% }9 n/ p' H, E7 c
, n- x$ C+ R5 D( v
turtles-own[
1 i, X3 \0 k8 s% Q  atrade-record-all6 K6 g7 h/ }1 S: E# I3 m
;;a list of lists,
trade-record-one组成& j3 S- P# C& u8 C4 w+ M
trade-record-one3 R! G$ n5 F6 P/ Q, o
;;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) z0 e4 v# ^4 \7 T8 }6 J! t) z, v/ s  j1 _2 N/ J1 ]/ V( C
;;[
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]]
8 q: g# {6 G* T" [5 h! t% h3 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]9 w2 ^, r! y! O
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; m4 _, l# c: o
neighbor-total
5 I4 }% l7 c1 {8 h5 Y6 s" b;;
记录该turtle的邻居节点的数目5 i6 X. v6 [8 j. ^2 N1 {0 O% i
trade-time0 B. h$ x: F* V, r6 h# s% F& I
;;
当前发生交易的turtle的交易时间9 }+ N. |8 U6 ?3 t+ ^
appraise-give
, G& d6 Z2 W: c( Z# Y0 P5 H4 p. N;;
当前发生交易时给出的评价
/ Z7 T( v& ^  C% w5 W( i! aappraise-receive# E; j  @) ]# x: _4 b5 w0 c
;;
当前发生交易时收到的评价7 z9 V3 S8 `4 W0 A( \* ]- y
appraise-time
6 s) A$ L! E/ N+ z5 V* A;;
当前发生交易时的评价时间
/ s4 g. r# Z( X; u4 `: \& Olocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
  j7 v/ Q1 O/ R1 ^trade-times-total
% g& A( E- {% `9 };;
与当前turtle的交易总次数
6 e2 E+ A- X/ e8 @trade-money-total
% v' B5 X7 e& S& h, I# j" z; ^;;
与当前turtle的交易总金额
- F# ^  X2 X+ Z8 q/ B4 ?! c8 T$ k6 Tlocal-reputation
4 O& C5 c4 a& f: |& j2 ?global-reputation
4 P' t# E3 }4 vcredibility
* |$ ?( C% H% ^6 |/ W, o;;
评价可信度,每次交易后都需要更新0 [8 |/ i( ]. c' q' B) |
credibility-all" f/ @. O9 S2 H7 F
;;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  L7 R, R) E/ u: j) }8 V5 q3 [

, }) T" K  D  H' o: H;;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( I0 }1 p0 z* m" d
credibility-one0 {7 L4 s* O& t  [8 E$ 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people9 \* u& y" p9 N5 W
global-proportion
  f) R/ `" L. m6 I4 o3 Fcustomer% d& i0 s! L1 u" j4 A0 z4 H
customer-no
- a% @" e3 m' s1 d4 F( D* ^) b1 Qtrust-ok
" K' O( U3 P6 u) C* ]/ T1 Y, L2 atrade-record-one-len;;trade-record-one的长度5 {1 U0 U( K3 `7 P" o
]
9 J$ X: m5 S! j, B/ U" i
1 u( i5 ~$ e1 z* o% \+ z  ^;;setup procedure
; g+ C* H9 L* D+ r; A+ I8 Q' f( `% W2 i% f4 c" r7 I9 H; d$ T" V
to setup
' F$ H8 Y$ C1 Y' M) p3 A, w$ }: g9 A- a' W. n
ca
2 b  K& ?9 R3 A3 h5 K8 Y9 c( B1 J( W% E
. _8 c( r& N7 ^+ g" |) _. Y
initialize-settings
2 F5 O# K1 S/ G/ D: S. f' G2 p2 M3 |( x
% R$ x; }; Q4 D- U5 m
crt people [setup-turtles]

* n  S. g$ Y" W6 \8 I3 m
5 o) j+ j1 E) K2 V* W  Creset-timer

- _+ z7 e" i% H8 u. V
+ s/ |2 e* y" |5 q& Hpoll-class

3 X9 m3 W8 V! s4 t1 a8 ^
/ b* U: L' Y' xsetup-plots

: w6 f7 b8 C8 H4 z8 @
, Y1 ?1 x' d/ A! [! V6 pdo-plots
5 j2 {+ {" A4 F4 Z  I' E0 i) F+ h, K) N
end
- ]' u& \6 c% c9 T( Z
" n: A( v8 P: E+ @to initialize-settings
8 j5 @" Q2 t2 g- k) d
. l7 Y+ P7 E/ f. v5 Mset global-reputation-list []
8 h! o3 M! F, d% y5 ?% n
! O0 l1 g& }7 w- O1 g1 T: M
set credibility-list n-values people [0.5]
; x( H3 {+ b: ^9 I
7 I0 d8 ?7 `, a# k" z2 T# e
set honest-service 0

7 D/ h3 I9 s7 P) x
5 m& H( f# [1 W* G- w% K2 Qset unhonest-service 0
! R. _1 S1 p+ r9 A; u  R
% y4 W0 }" C! W  Y
set oscillation 0
* _" d: I+ U6 ^9 h& I2 ]6 q
$ S; O9 ^. M7 r0 K' F' H) @
set rand-dynamic 0

; x& K# ]- A6 ?+ e7 l  `0 lend
6 n0 v# [9 D4 c. I) k: A. S2 Z' f- Z" Z
to setup-turtles ) p0 E6 S5 K  `( T. h
set shape "person". ^! m% e9 t% e$ p% a
setxy random-xcor random-ycor
& x  b, d$ |  Zset trade-record-one []2 Z5 N9 y3 q7 b/ q8 |8 g) D2 L1 R

* [# m1 n7 ?) t2 ]' {set trade-record-all n-values people [(list (? + 1) 0 0)]
! j3 Z* @7 _9 J  L* A/ u
: T+ G+ Z1 G! E. ^9 B$ c! j/ n
set trade-record-current []  i4 y8 e! b7 v( R; d9 a( z
set credibility-receive []
# v) J) i/ R$ Oset local-reputation 0.5! B5 K( e) d4 }
set neighbor-total 0- V5 k* d1 Q' ]+ r# Z. G
set trade-times-total 0
5 I& j! ^3 D+ Q/ }$ A; ^; Sset trade-money-total 0) d& [* N9 t0 H! Q% t
set customer nobody
; q) p- f  F; Bset credibility-all n-values people [creat-credibility]( H$ x4 U. x" g
set credibility n-values people [-1]$ u6 }# s. k+ l- e: o+ Y
get-color
7 [( G$ }  l# o3 {! W5 ^7 u9 ^; `
8 u% y1 ]2 e9 k4 L! o3 V# A
end8 ^9 S9 x9 z5 [8 Q9 ?
' @) F. J& x# \/ m# v: D
to-report creat-credibility
& o; h5 F9 x3 `, S8 mreport n-values people [0.5]# A  G/ ]2 }9 w7 m/ i
end/ e# q4 [& Q0 _2 i
' t( p; s! U: P6 B: i6 s! L
to setup-plots
0 h% H8 \! C1 }) l2 Y( F0 A' [( ^
set xmax 30

  h3 I, k) A2 l$ L% X6 [3 z$ D% G/ n8 S8 n- u0 Q& y6 S
set ymax 1.0
: V8 \  V- a  t( y3 J

5 o- y/ z9 W* Q! V4 Wclear-all-plots

7 Z/ O% k/ t( F) w) I8 U1 S) ]
8 [% i9 G" L; ysetup-plot1
. d& |% M# s0 j# g6 P
: e' C. K0 v  L
setup-plot2

% B* {; d# N- [1 J% K
' V9 `& q! ~4 esetup-plot3
7 o5 u  q7 L' t- g9 ^
end0 e* z% y: I/ r0 Y9 {% W
9 F' f. x7 z. i# M
;;run time procedures
2 }2 \5 W; F& T: F# Q! _, J( b$ }+ I9 Y
to go
# m! I# f$ y+ H+ a2 V, t
6 E( t: b$ y2 ]( }2 R6 ]; ^+ Fask turtles [do-business]

& \4 C3 n, |& f  `4 gend
3 o: ^4 p' x- M
6 `( g) _6 Z$ V$ d/ rto do-business
# D  U9 G9 B7 X: n
+ ]; p. G! `2 H7 K
4 c# l  {% S+ w6 Z6 b- E, J2 G
rt random 360
. l% ~$ _  z. b1 }  F
9 e7 p# N4 x5 ~2 A7 F
fd 1
: X+ e$ L" n  G0 x0 \' ~& c

- q, s5 J% Y' w+ oifelse(other turtles-here != nobody)[

+ G7 g" r8 Z8 r3 B$ x1 o# g& k1 E4 p5 T5 Y8 b8 \
set customer one-of other turtles-here

, x2 }9 |% r1 [+ ]' I" H
% z, ]& |! G. b$ B& L. `;; set [customer] of customer myself

- \7 u6 t4 z/ k4 O
9 Z: m$ T* f% {$ G* c+ b! xset [trade-record-one] of self item (([who] of customer) - 1)
. w5 `/ n* l" b: V[trade-record-all]of self4 @! v6 d) s; o4 l6 L' X
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
1 `! Y- P5 K" H, L$ C
- L# l8 r2 F# w2 C
set [trade-record-one] of customer item (([who] of self) - 1)
5 m; B: k- t; f$ c[trade-record-all]of customer

; h" T/ n! ~4 ]' j$ \; D: C* s3 z$ p' v% G9 r
set [trade-record-one-len] of self length [trade-record-one] of self
$ ]8 D9 ]9 j' \, e9 e6 ?; [( Z

; W3 y* w6 n- Lset trade-record-current( list (timer) (random money-upper-limit))

' |9 E" a, f# x& T- h
% p5 i! Z; I3 Hask self [do-trust]: P2 B/ h, Z" a
;;
先求ij的信任度
1 [) ~! n! n' O/ ?" U  Y, ?
; I8 R1 T7 |# |5 R+ U# cif ([trust-ok] of self)) p) e, M  B+ l/ ]& J" o# u' p
;;
根据ij的信任度来决定是否与j进行交易[6 @: C3 b; a, A0 S( r7 T, ]9 c  I
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
9 N, H0 L5 Q' K1 g  G! x( X) U, R/ H* r1 I# b
[

' {# x* b. E4 g: z. ]; J/ n  {, {! G6 e6 Y
do-trade
7 \+ G3 ^, B  ?/ e* O: [4 d% I
! j5 @- @# g3 l; z; ~' b' {
update-credibility-ijl
6 {* `4 |! ~0 A1 M  w$ a8 ?

  x' ^4 a% I8 o. O; Z3 n  {/ Aupdate-credibility-list- h% R- X1 J3 x' Z9 t, _( v; r' y
% v6 i5 u. T! V" M2 J; D; W

, e: z: O& c$ s. ~7 k# F) Qupdate-global-reputation-list
7 e; l1 ]+ G: i* a8 G) s

, V# B# y2 F% Z! r, Vpoll-class
8 O: K. V2 ?* C3 z& N5 q
* _1 V( G( {: Z. h
get-color
+ |7 z- Z( ]+ p2 H" }

) T! J1 H9 X# }' j8 `5 `6 }]]# x* b# ?4 w# K
7 s& K! `# l; a/ W; N0 g/ f& K
;;
如果所得的信任度满足条件,则进行交易
7 I% q. j$ p' }
: g1 I* q" y  y* j4 S. z+ p0 F# o" u7 P[

. q9 I! \( N# Q. I" {  f) l5 D3 @) f( z2 V! X' |
rt random 360

9 Y- x! g2 Q! n$ R2 c; y3 J  ^2 P$ S3 P7 @& I' s7 D
fd 1

9 x9 a( m/ X4 M+ N# E$ [2 ?4 S: P" F' x) e  ?+ }+ f
]
8 E$ i3 t, E8 O% M9 o+ A

9 J% u) ?) G3 h0 R# u7 e/ c6 Z! lend

# j" Y4 }; R/ N) u& t; ?7 v
/ f* M+ O5 m7 pto do-trust
8 R$ x$ o6 @0 g$ @' Cset trust-ok False% r8 {; w7 V% ?4 G  @$ g

6 x& C) s$ C- b4 H; _

' M7 [" O6 K3 k- A# Mlet max-trade-times 0
% E' P* e! t5 N5 Q6 J& j1 w5 t$ qforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
5 Z! h: z6 t; K, I) U2 R8 wlet max-trade-money 0
$ y" N! x4 e/ c3 B& y6 nforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]], p4 R$ r6 M% j# u' q
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))5 L+ o4 x# S8 A! Z, w

! p  K2 v; S3 {& @. ^
1 P' R  `0 i5 p; k. P3 z7 u* J
get-global-proportion- b7 ~) x$ q( j
let trust-value
, S6 W3 e& v$ @( W$ B+ Zlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

) D5 @& a& t7 \8 }if(trust-value > trade-trust-value)& z5 V) K% o1 E9 o% Z  r& _* J: C
[set trust-ok true]$ I* H/ w  ~0 c9 q) w  K* R! B# F
end6 b( m# e) l/ k- F

6 V5 F7 f  p" G" V, z5 l$ kto get-global-proportion
3 U* U" w; t4 U+ P" Difelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3); Y% r  u5 X5 }6 R' w3 J
[set global-proportion 0]
/ a- ?% K& W6 g9 U[let i 05 x/ J& P5 ~" ?5 v0 \
let sum-money 0
, r! c6 P2 A5 n% Mwhile[ i < people]
2 ]0 v1 t+ p. c[
5 M$ d% ]) N- e+ e! R$ B0 iif( length (item i2 d7 N/ \. r' \
[trade-record-all] of customer) > 3 )

( Z# N! K7 m9 O1 B1 @[
9 U2 I$ _: _$ G3 B. Vset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
4 x1 u9 ?7 j' m# i7 [- C2 z]
& G/ l) f4 B4 a# Z1 [7 k1 k: I]
% V( K$ Y$ v8 z% m8 b5 `let j 0
! f8 f2 A8 T/ j1 A2 d" _# b3 _let note 0# o) R' D- Z0 b
while[ j < people]% J+ _# M3 b( G- Y8 D4 h' f
[  |/ S. T* d, h- ]* V& Z* v
if( length (item i
; ?' A1 b; }+ K/ F! N" A# c[trade-record-all] of customer) > 3 )
" p5 u* z8 _7 ?# Q, Z0 B1 \
[0 A) c' `4 h. A" z1 w  b
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
' l& B( {/ }- C+ V# Q$ ][set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]1 a9 I# |0 e8 p( D- p5 u
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
% A5 L9 U3 A/ M9 T, n]
5 e8 H' e, h6 {4 X1 c9 l8 d9 o]7 `9 `) f. j" ~5 n8 N: m4 [
set global-proportion note
6 S1 t" a7 p6 P( t% ^/ x: X]& t: J7 J. X/ L8 O" _9 |9 O3 i+ E
end1 T# _( o& I( F; m7 n2 i

( m: _( x5 Q) U" \to do-trade- Y/ w8 R. D1 A( w9 I8 W# [. e: Y
;;
这个过程实际上是给双方作出评价的过程
6 V6 u- O- w# ]+ bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价4 R& o5 E& D+ l9 s' W1 k- F4 L9 w. P
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价; t0 c8 @8 u) ?/ t( i' [
set trade-record-current lput(timer) trade-record-current
+ c0 ~& g3 U0 {2 ~- Y4 z" X$ l;;
评价时间, k5 K; y# b' c+ ]7 w4 X: I
ask myself [
/ h: a" X6 k! ]9 x- U+ tupdate-local-reputation3 _; o7 N) a/ M5 K, u
set trade-record-current lput([local-reputation] of myself) trade-record-current
: s, _! b5 o0 L" W! h]/ D/ b9 ]- p! p9 K9 M$ y( A
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself# B  n3 v! j4 C5 o: Q# l" p
;;
将此次交易的记录加入到trade-record-one* H% g8 X  e1 {* j% Q, Q! e3 L
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)1 k7 L7 F# O# p4 H5 `
let note (item 2 trade-record-current )7 W9 S1 _5 O, h
set trade-record-current
; ?& U' Q( ~& E2 m$ I, Z, V(replace-item 2 trade-record-current (item 3 trade-record-current))

( v0 V5 J: ?8 ^  }) s% R; iset trade-record-current* U7 M3 \  x7 Y- C. u2 a' ]% f4 X
(replace-item 3 trade-record-current note)+ n1 }* B* l- @5 [

7 j1 H9 C4 g, m- ^* v4 [2 C/ i* C
% F: M2 N0 K) R+ d
ask customer [
% \. e: j8 |/ I" nupdate-local-reputation7 E, s# W- _+ D3 i3 z1 E& b5 V
set trade-record-current
( |9 r' h% A" {0 k(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
' B( u/ B. z8 }' E9 g
]. @- i! R- d4 S/ Q0 b' E
: w4 u6 Y# k* c- }( [& D

! s1 t1 D2 o1 b9 J# Tset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer9 I3 ?2 ~( i" {

8 k, E6 _( h0 @! r& dset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
% J/ E) |7 N7 `+ W  [8 i;;
将此次交易的记录加入到customertrade-record-all
% ]8 G" P- V* A, a, h: Oend
: T3 S& S- ?& M- C6 `- o& d, l8 s; G9 O& h* d0 k3 [
to update-local-reputation) S, n8 C' x8 x0 z0 e* B- X
set [trade-record-one-len] of myself length [trade-record-one] of myself
! L7 K' i( H* n& V( Z
, y: c+ z- l+ ]' B
2 V. d; Y2 a2 o;;if [trade-record-one-len] of myself > 3
8 o% s# i# B1 R, ]: l( h
update-neighbor-total
/ G0 c! D/ K0 b. h;;
更新邻居节点的数目,在此进行; m; l& Q, _4 _8 y7 a1 L2 _4 W
let i 3
/ q: x8 }! Q& E. M4 k8 c2 r0 v. ]let sum-time 0; D# J# n' G7 e& f) ~9 z& c. F# Z
while[i < [trade-record-one-len] of myself]
. m- p; R8 S* D8 G3 Y$ ^[6 {" \7 q& A4 Q( Z6 [1 A. g! Q
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )7 ^8 N7 a/ S. m
set i
" V. F- }' j) ?7 u/ c( i + 1)

( n5 q4 N& A# ^- }6 X: i]* Z- M$ z# N3 q9 ^$ N1 e& j
let j 3' m) U( |( f2 B; P2 s1 V
let sum-money 0& |$ G2 p. y) e; }( K5 N3 y! p
while[j < [trade-record-one-len] of myself]
5 A/ ?' p' Q8 \/ h, k) D[: ]" I# f" B+ W/ {1 _* [) N
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)
$ {5 p/ J: O! ?set j
- L2 h1 t" x3 m  o. A7 `( j + 1)
* l$ k# ~5 D0 ?2 |" W! }# H
]
6 |3 y; E- w5 tlet k 3
: `4 @  D% F) `6 r) q  ilet power 0
: Y, @- {6 [, n8 Olet local 0
/ z7 u- r2 N  J; }while [k <[trade-record-one-len] of myself]
! J3 |  ^% ]$ Y- p) y7 V[
1 H% H' H5 h: h/ E; s3 U' A% K# ~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)
1 J: ?9 R- J0 F8 K  Q3 C# gset k (k + 1)2 p9 x7 a3 B6 n! Y! k+ s
]
: G9 d% j, {5 S1 {6 m0 Lset [local-reputation] of myself (local)8 t* }( K+ z& t# G& Z
end
, R* \2 K* w, w8 i- p* c
* w% T* P; u- n3 C6 sto update-neighbor-total; B" q% j* g( {
/ z) p6 z* `$ n0 ^+ S9 ?
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]3 g8 d3 J' `# C0 O! E

. j0 g) R, w3 U6 e: W$ g

' i: o% i; d" t& m# ^end% `5 j3 o' C6 j

* V( r, R$ P) H4 q$ e$ \. \to update-credibility-ijl / \; L3 D7 V! ~! d; B& q; |
# Z- R- V% w: C/ E
;;
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。& A  z6 Y& e, _+ T
let l 0# e( M: L' N2 d# p; h
while[ l < people ]
+ _6 ^# x  N0 L1 z* T( C, h5 O/ E+ e5 T;;
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
, e1 Q, o  Y7 y( X1 b) k[! M$ @- K1 u* D) |9 B6 }# O
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
) r2 W; S$ z0 n3 ]1 Gif (trade-record-one-j-l-len > 3)5 F9 m' y6 U# H' ^# p% Q( V
[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+ u2 P* a7 B. J  i" x; M
let i 3
! |$ D( m- b8 S$ v' S: Slet sum-time 06 |7 i- M; H4 m" _% k) `
while[i < trade-record-one-len]# ?' a% O! c! R! C5 p
[6 _' G3 u0 b9 S  P7 Y
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )5 F" P0 p! D  y& r; h
set i$ j; v  e' S4 [- f( f( w
( i + 1)

8 K% j7 \4 E" E- U2 w2 |) d: U6 t]
8 z; }) e( j; {) Q" Vlet credibility-i-j-l 0" b9 H& u) Y, j
;;i
评价(jjl的评价)
( I1 H3 r' O% x/ l% Wlet j 3. x5 C2 D+ z3 r  j/ O9 K9 C
let k 4$ s; O* ~' J1 ~( Z# s; R$ p
while[j < trade-record-one-len]
# v- _2 j1 t6 X. y/ O7 a[3 w- ]) b) n: J6 j$ B
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! K: ^; q" E" ^4 E: Y
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)
) j2 ^) L$ B8 l+ F: B& h* oset j
% w% ]& O2 R' m( j + 1)
6 Y/ m% E$ y( @
]
0 D5 p/ }0 j& C7 a4 Dset [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 ))( C( z4 ]" y, L/ [, g6 I
5 f+ `2 H2 w* ^% U# M" K

' O% X5 ?% l. N; {8 Glet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))8 _6 G  x) W# C* n" E* T/ d& q
;;
及时更新il的评价质量的评价
; T: W/ e/ O! {+ {2 }- oset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
) n* l8 h9 N- t0 S1 Pset l (l + 1)
/ _) J* n  C. o8 D; h- j0 n& N]
) g+ {0 r( D0 h9 kend
* C5 N: d# V  \2 ?) I1 e  S- Q8 N$ G5 u/ _5 t8 @$ l, r
to update-credibility-list6 H2 L# q. M! i- `
let i 0/ N) f& j. n1 M+ e/ b5 |6 ~
while[i < people]$ v% Q8 ~5 C: O  K. s) }5 O9 S
[
/ \3 v% _* B' j$ H6 i$ `let j 0! t$ {$ D- R. q) _# O' Z% U
let note 00 ]+ E! n+ a9 @9 r
let k 0
2 @# U2 y+ ?1 h8 k6 B;;
计作出过评价的邻居节点的数目; n0 C+ W  s# O' u1 m- r% H
while[j < people]+ m+ U* k# J3 P
[
% @" P' w( u8 B. ~5 e3 Qif (item j( [credibility] of turtle (i + 1)) != -1)
- o/ R# Y# n9 J% W- P/ N/ H* [;;
判断是否给本turtle的评价质量做出过评价的节点# T: Q, u- R. }1 j/ [0 R
[set note (note + item j ([credibility]of turtle (i + 1)))* [9 E  q' G: N9 G+ s
;;*(exp (-(people - 2)))/(people - 2))]
  D) g1 z/ _# `& C8 ^9 B. X
set k (k + 1)8 l2 R3 z' V" r& J$ J
], z6 i5 z( c. Z4 o  J9 R* ]
set j (j + 1)$ ?) U, l! I1 E
]4 ]8 r7 a% _( V% {+ Y1 l2 [: a
set note (note *(exp (- (1 / k)))/ k)
" b- ?3 ^! T2 z8 y( Mset credibility-list (replace-item i credibility-list note)
( T& o* Z( h, q- F5 q2 o$ g5 R: }set i (i + 1)
, V# n5 L; d. o]
: U/ a  C( r+ Z4 V. w# H( A- x1 Aend
1 J4 \0 ^# a- I" |% s* z; L, W- ]) D+ C! ^% J) b8 L
to update-global-reputation-list
* ^. f3 R5 a7 ~$ I" x1 slet j 00 ^7 X* U) I7 G0 f% O+ A  {5 R
while[j < people]9 U" a: v! [1 a
[2 K2 g* q& K1 y+ W
let new 0
  X$ q$ ^  O: H;;
暂存新的一个全局声誉
6 n" [* f0 G8 S: I- Ylet i 0) v" C1 J% e, E% m) u
let sum-money 05 c& J( b* q! Q  L$ u9 g7 V7 J- {* L
let credibility-money 0; }' G4 }, P) Y+ e  `  E
while [i < people]; w9 W* U7 ]! I% a% X
[0 U5 A2 _% K; N. F) B. N5 L/ W6 w
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
4 u+ b; r" I; j6 h; ^. W9 |3 E# J9 Tset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
( |$ D3 d6 m, ?; I/ iset i (i + 1)
( u: j7 p6 J2 L/ G]
/ J' T8 R$ w) D7 k) c1 c6 u7 zlet k 0
) E2 o: t8 u# I5 J: ^, o( {let new1 0
0 c# f/ C5 H9 E$ twhile [k < people]
' v6 k" `7 R1 I1 x: V/ R; P[
& f; l6 d  b5 B2 Gset 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)5 _% i- a. Q# r7 `4 G
set k (k + 1)% o/ K; i- C7 F9 m8 N& ]5 m
]
$ M; e: Y) r0 sset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 3 p+ |* O! s7 N9 [/ G' e. ~& j
set global-reputation-list (replace-item j global-reputation-list new): V2 G; a+ P& B& H( r( T
set j (j + 1)
! v3 E+ |' c! V* ^7 f7 l0 A! I& _]
. F; W+ w' i, ~3 fend
0 I9 ~. P: Y( K2 u8 K2 W! m' ~; D3 s2 h) D0 O) d' Z* `

' Z9 L8 U4 O: `" ]3 [; E; d& G8 E+ w* A5 X& l. m
to get-color
! M, W# Z4 g& A$ P5 |* R& y! k  ]/ r1 W$ u
set color blue

' ^8 f" c7 m+ q3 x2 U( }end9 N  y" |7 A$ Y" w7 I

3 q( `2 U4 I& y' q2 p7 c/ nto poll-class
% i+ l( s# H2 A; eend
) `5 D+ ~: x1 N" H  F0 y* m2 C7 y' b7 J% X: I6 o
to setup-plot1
1 `0 o" {! D  F( Y6 W% h( o( m6 p* ^/ e0 q9 n5 h4 A5 O, Z7 r
set-current-plot "Trends-of-Local-reputation"

+ e% d+ Y* w) L$ w" \8 K- H+ ^1 W8 |+ J7 n9 e  ?8 E2 @
set-plot-x-range 0 xmax

" \% k; g" Y  c5 b/ B
! ]: r: n( O5 Z$ Q% [5 y& d& Iset-plot-y-range 0.0 ymax

' _! W2 @8 s9 x% @% l& R8 f' mend7 p9 C- S3 B7 p/ j8 ^  g

9 n+ K: p* ?5 Q( nto setup-plot2
" V' Q3 q% i( I- m- j6 U* \# _! K
set-current-plot "Trends-of-global-reputation"
- a# b* `: s' d$ H7 l

, v' E/ o4 c, M8 Bset-plot-x-range 0 xmax

+ F0 p8 ^# v# h5 |! X8 @7 S% S3 N* @4 y  w% p8 G% R+ m
set-plot-y-range 0.0 ymax
; U/ ?( B  y9 Q' V7 G$ l1 M
end
! _- O9 B$ m$ L0 G* r- b9 @9 a( l  V9 b  D& G0 d
to setup-plot3
) w; X( g5 y* C+ ?. |1 o5 }) s& _- ~
set-current-plot "Trends-of-credibility"
. ?& S4 r4 Z; P
( ~9 z; x) H- i$ A7 X, z& D% F
set-plot-x-range 0 xmax

4 O3 o! C! E3 K4 G( [) K% O( v2 @" X
set-plot-y-range 0.0 ymax

2 X9 O. C1 e! B' _: d$ |9 {end# d3 l6 F1 m2 T$ e4 Q/ y

' G0 y! k7 a' K' q1 Rto do-plots
% `7 w  M4 b" [: e) J* U1 B: ]set-current-plot "Trends-of-Local-reputation"! D: ?# ^* K/ `3 M
set-current-plot-pen "Honest service"
5 N8 W% w1 a( r( H$ wend
2 T5 \  z/ t9 s2 K" a  ^
$ {3 L' c) l7 q, h" q[ 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.
, x0 u, b0 }( a' s- E0 S' G( I9 F2 b* S' Y1 k; |" r; 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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