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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:8 |: [# o1 `1 ~
to do-business % {" x5 |5 ^$ h# m+ ]. p* c
rt random 360
. W/ M( j- B6 e- P1 C fd 15 _- w& I' P; F* o* c/ X  {
ifelse(other turtles-here != nobody)[5 b2 Y* a( Z. |! o/ \- L
   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.
& }* X! ?  D7 s8 D2 m) B! Y   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    0 I" a' m9 Q7 w% Q0 e9 Y/ N' G
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
! e  T0 e6 s& S( H   set [trade-record-one-len] of self length [trade-record-one] of self
$ g, S% v- v: ~% w( C8 P6 f- {' ]* a   set trade-record-current( list (timer) (random money-upper-limit))  z- i2 R2 Y0 K: y7 Y8 Y1 Z
8 }# S6 R' \$ u2 Z, ~2 G! `
问题的提示如下:
2 S7 {* W+ e' k; |+ `( h. ^$ }' g3 O
3 t* S0 |1 Y( o6 h2 l0 Lerror while turtle 50 running OF in procedure DO-BUSINESS
# A( K% n9 T  v, i4 _  called by procedure GO
" ^0 [: n. v. e" `+ UOF expected input to be a turtle agentset or turtle but got NOBODY instead.
- b( e8 m( I, P/ D* p. X6 c  q1 L' \
(halted running of go)
* @: _- ?0 ?) y7 T' g/ `0 `2 t
0 u0 G6 \8 }9 `. r/ i# s& D2 T这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~4 z' l# k1 F# Z, i3 H3 P
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
% y8 B. D; `, z% F5 \globals[! Z* D: E* R4 @# s2 t5 ~
xmax
5 d/ @: `) Q5 l9 y" Rymax
; u  i# f3 [4 Eglobal-reputation-list( h9 c8 M" F( o7 Z
* j1 O* W5 }) z4 ^/ c2 F. p; `
;;
每一个turtle的全局声誉都存在此LIST
* f9 N8 W/ g; o! k* |0 @credibility-list
  M; @6 @+ C9 F;;
每一个turtle的评价可信度
/ j0 `* I* c3 s% n6 @/ uhonest-service
3 Z# m2 ~8 G$ b: K" Tunhonest-service
! F/ ?' R1 o0 b4 B/ t/ }0 w8 V" b. }oscillation! G4 n- Z; ~5 H- c: M
rand-dynamic
) @, t9 I( O/ p6 I# C]
1 |) g3 g, G7 l  D4 \) D( v% s6 y& a( T' ?# j2 n3 o3 m! x: V& |/ U
turtles-own[
3 _; g0 _- @+ l- W: M/ S5 o$ B6 jtrade-record-all
: U  o! l- n; q! S. Z) H3 E; M1 z" Y;;a list of lists,
trade-record-one组成7 p& L+ j( G& w2 q/ H7 U- w. i0 l
trade-record-one% U9 n3 N8 b6 c! V. Z, e
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
& l2 i9 A3 Z. I& ?0 U5 f6 r
; f6 [9 p* J/ s7 H/ {8 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]]
: x# I; }; `0 e2 L$ W$ L# P% Ttrade-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]
) @" e7 _) t5 i" j. Acredibility-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
; G/ x0 A9 M0 I4 {neighbor-total
9 a$ F( e/ t  H' V. l/ s! N0 D;;
记录该turtle的邻居节点的数目# x8 ]# T; {1 o- w. s
trade-time8 O0 G7 b$ n5 v/ a. ?% b" ?3 v/ u
;;
当前发生交易的turtle的交易时间5 z7 k8 D3 Y' a& F6 r. m0 Q
appraise-give# ]7 r! Y' r6 D. E
;;
当前发生交易时给出的评价
# J# l4 F* O; T; E5 ]appraise-receive
: B( a  Z; D  `4 Y2 Y: Q" d- K;;
当前发生交易时收到的评价
  R! e' I4 m" E+ W, F  T" w5 w7 Mappraise-time& \" }) a5 @# j6 B) _6 `4 I  `
;;
当前发生交易时的评价时间
. W) M4 y/ s, L$ i& Ylocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
$ A2 W7 q6 m5 V, V) J# b* ^, rtrade-times-total5 z: `* `, D$ }/ F% j- l) D
;;
与当前turtle的交易总次数
. S: M9 D; D! n/ y9 itrade-money-total
' n, h5 n( F' Q$ B;;
与当前turtle的交易总金额! g. ^+ j% Q' L
local-reputation4 P; Z! ~" a. {. O$ D  x) u% x( q
global-reputation
* D0 J3 t5 R- Y0 s( V) Fcredibility
: g9 c6 P' P* O6 @  x4 L;;
评价可信度,每次交易后都需要更新. ?8 F! `# F: Q9 o, c
credibility-all
! K: @+ w( l, ?;;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
3 h. R4 k, s' b3 Q3 \2 G
+ C% S) w  E! l& {9 n5 n+ o) [1 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" y$ P7 [% k+ d( k
credibility-one8 v6 H( W+ ^; I7 m- q* B/ w0 h" W% \
;;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# p2 S2 `% ?# o( E: w! }4 J1 e
global-proportion2 B% ]7 y+ {6 K! ^: w
customer! `5 @2 B: |: R) p* i* |
customer-no
7 q# ~$ Y. e( jtrust-ok: N" j7 a. k$ v; Z7 e% ?% E
trade-record-one-len;;trade-record-one的长度! {+ F' C8 N) G/ a8 @: z
]
; C( U+ s" q# B( Q  a& B
2 |1 Y. G# V5 z; h, E;;setup procedure, i+ e2 ?! m& b" P: P9 M% n# q2 Z
% Z$ p% M6 R# L1 {8 r) I
to setup/ p# E8 ?% |# q" Q# ]$ L; q

2 W- R9 N4 J" T; K. R# kca

; L; Y* J* @7 N/ e3 o1 v0 n6 d: h0 I/ C0 G$ L9 ]
initialize-settings

. l$ u+ U& n& H5 q8 ^/ A. H$ L1 L( J8 @. _: u
crt people [setup-turtles]
( s% w/ P+ O  r

" ]1 {3 @9 t4 _2 ~5 _7 X7 ?reset-timer

, ^3 D; c+ S! s( y6 n  x" u* E+ N8 r) |- Z! P  Z, r
poll-class

5 a5 T- O9 _* T& _0 p$ x3 e5 L- @9 t8 S6 ]& k. ?' L% [& u" Y& _
setup-plots

0 p. }! T9 a& G2 G
1 K/ w# ^6 z# f" W% n# wdo-plots

; b' S* a7 }0 @( B/ D9 Aend
; L6 U6 k7 B, b0 i
7 j7 |/ v, n+ l# v. p' o0 Dto initialize-settings
1 r" c  B) s( R. {3 P5 k! G4 @" j  Y4 F. d" ~( |( `. ~
set global-reputation-list []

& R" ]9 A/ s- W9 g
$ `0 g5 b/ ~! ^! R& E/ b5 h- gset credibility-list n-values people [0.5]
$ o, Z! S# |, E$ h! F
; b. H- Z  @/ r3 p
set honest-service 0

- i( ?2 z2 a) P! C
1 g) C" v' i4 @  p9 Zset unhonest-service 0
7 `$ v; n& `2 C% ^( \. o
3 D$ W  F7 F2 I5 @
set oscillation 0

- {# p+ y/ u; m; M
% d0 b& r6 O8 p' Nset rand-dynamic 0

+ y  K! X" J5 Pend
3 R5 E5 ^+ d9 a- G5 {' Y
6 ^/ _% X4 p" a, C4 m$ J) }8 ?$ Bto setup-turtles
( V- y) |! S, V! T8 |set shape "person"0 f: K) u+ W3 }" c( }( F2 b
setxy random-xcor random-ycor' n4 J( h" x. _7 L2 @8 M+ C
set trade-record-one []
# G4 p' d$ o- j+ B, o7 ^$ a

% b9 c( K! s( i4 Q, W* dset trade-record-all n-values people [(list (? + 1) 0 0)] . d, |) O1 j- [
% d; |- ?0 ~9 [" w
set trade-record-current []0 ~; E4 i: P$ Y  [* z; u3 M
set credibility-receive []
! [2 V( z9 b+ {0 `set local-reputation 0.5! x" Q: _& y( v8 B: B7 j- q
set neighbor-total 0
3 o/ d$ p$ z' ~* ?2 p" Tset trade-times-total 0+ \% ?2 b2 |) i' B. I
set trade-money-total 0: H- @6 a; t& q( Z4 m
set customer nobody) P  A# t1 a6 \3 t3 X! t7 N
set credibility-all n-values people [creat-credibility]# B. n! l4 R* [" Y7 ?& J- F7 N& B- r
set credibility n-values people [-1]
$ _! ?- ~0 ]6 i2 h- e: jget-color
% ?' T5 j! J; ~$ H: n, \& e
$ w5 V! J4 Q* E6 E1 A4 b/ |. \
end$ j! C, F) }3 `5 D( Q7 _+ n

4 H" O1 D4 f3 d8 Z2 R) S+ mto-report creat-credibility; ~+ T( ?% C/ G3 [* A+ W, P" T3 {
report n-values people [0.5]
! p3 U& N+ {. P; v9 p, D' jend
5 w1 X9 E2 `; I
$ e+ Z4 W/ Z% J2 Wto setup-plots$ D1 B! n( n$ {( C# X
) j1 c7 l( m5 G8 P! L  [
set xmax 30

6 ]$ L: k' r7 Z! s! O% E/ o6 p1 ^! j  d# n  ]3 T
set ymax 1.0

2 o& }6 q& A; }/ m! m
9 n9 p7 A4 g0 ~2 X6 Lclear-all-plots

$ E6 }% |& h$ w4 k3 J; I5 t5 ]: ]7 P1 w/ D$ A' k- w& F/ {
setup-plot1

! L# \; A. F* }8 Z
9 G$ T2 |5 T' c. x3 asetup-plot2
6 S1 N- \/ \' q) p

/ P1 q% I/ K5 u9 }( P% g" u6 |4 Nsetup-plot3

. ~. D9 D" z% ]. H' gend% ?% r# [& `+ n8 h7 b

7 ^5 x! e) W& z;;run time procedures2 K6 a0 [6 p# v0 a( C# I, N
; q# P% {  R! H! D$ F1 O: h5 T
to go! Y" k+ w3 n$ f/ `' |: C4 x
, t$ K5 B" Z& _& G! Q, o
ask turtles [do-business]

. k4 t* I. l) H/ B6 iend
4 M8 Y- E1 m  r( G" q( f+ t3 {* g3 M0 X/ f# k
to do-business 7 D% g' b" G! o) }8 F# R* Z+ e% S  N6 d

8 T" L: R1 E( P3 u6 k7 A* s! x% V9 D' L- i! t7 J# Q# K
rt random 360

5 T( a8 L+ }4 K8 c' Q! G9 _/ t( U9 ?
fd 1

( E! X+ p9 I+ }1 }! w$ `' s
6 ^* H! d# _2 t5 bifelse(other turtles-here != nobody)[
1 ]1 ]' W' r" q2 U! b+ r
8 E/ v( o+ ]# [) W7 v7 R8 G
set customer one-of other turtles-here

6 p/ ^0 A5 Y/ p
8 ^6 ~5 b: P! j;; set [customer] of customer myself
$ X# J+ H4 ?4 \0 @6 K- Y! o/ Q5 L

+ |+ ^3 q: w  `* ?set [trade-record-one] of self item (([who] of customer) - 1)
! N" c: |+ ~% x[trade-record-all]of self
1 f( j. U$ a4 ~+ N  U  I( G;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

, h7 b' f" l$ V$ Z: B/ e" k. m. R! M: p9 }3 s
set [trade-record-one] of customer item (([who] of self) - 1)+ [) ?  i+ N  K' N- w) T, L+ r: x
[trade-record-all]of customer

! J/ A0 C, {  B9 ~7 a! ?6 |2 q" m6 K$ `' p6 g) D
set [trade-record-one-len] of self length [trade-record-one] of self

- [+ E( q- E6 ^9 f
0 d& m, V9 ]7 yset trade-record-current( list (timer) (random money-upper-limit))
% I/ Q% K% D  h# o  I. ]8 f& N8 O% p
9 N/ f8 q8 f  w: g( ~; Y/ ^
ask self [do-trust]
, J: ~2 y( [! [5 i;;
先求ij的信任度
% a9 f6 t1 n& ?0 A$ Q" l7 E7 d1 s3 w0 A3 r' x) r
if ([trust-ok] of self)# ^9 v' S9 o& q1 a  g
;;
根据ij的信任度来决定是否与j进行交易[+ Z' C2 ]6 C( q. w; P/ u
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
* }5 Q' C: \0 G2 u
" r. G5 u8 R; B5 g[
! S4 }& R/ o6 I( M- T

2 f. ]. f/ i1 G& ]* x# Jdo-trade
* [- J" G. c# k$ v
/ u! Q0 G0 O( R, b, H/ Y
update-credibility-ijl

( o7 M! L9 N9 h9 ^$ N8 }
+ y1 e- p* G( @7 Eupdate-credibility-list
' x% o& G( `- N
0 r. g! `7 H; G/ f4 M0 V; Y

+ n% s& ^" i4 a0 v4 A, Xupdate-global-reputation-list
3 |; F9 g' q- S
& R' g% O6 s! i# i
poll-class

; i. r- {* o1 ]8 b/ n6 Y' l. E
' s/ d& S# W  f; G. V1 W9 {3 @7 sget-color
0 b# w, a' s  D* \4 g, I
" I; {( p' `$ S9 ]+ ^0 G
]]! B1 o: q& H, l9 @

- z. k4 i- O& A  P, D9 {) q/ G/ Y- b;;
如果所得的信任度满足条件,则进行交易4 M* v; o) R8 ?& L! e! x

0 G/ ]& q1 }% l. `# a; Z+ _& z[

8 P1 U" d: L, d; }& H* N2 n! M$ c) h% G" F& U/ R! S( j  x
rt random 360
4 l/ \8 F# ?. V+ q  {4 t  ?

6 {$ x8 J. j+ [0 J# ufd 1

! o9 X$ R( {& B6 ?/ _# V3 u9 ^- k8 E9 G( \
]

; k1 F5 {) ~) J% _* W" |' @- M' P3 p6 O" C+ W; I& N
end

% ?, d. Z) e. o  T
' s- X, X+ \8 ^# X1 Xto do-trust
1 z  x7 T5 M* x. w% bset trust-ok False
9 c, {. Z' i) j0 }6 p+ Y) b0 B3 k' i7 ?# w- r: q* Z1 }
- Q; I/ d& ^7 [/ m* R
let max-trade-times 0! k2 F6 i2 ^. _1 }  R
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
1 }, Y  ^. F& |# r- q6 h4 Q: Slet max-trade-money 0
, R; g5 A9 P$ T9 o; Oforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]  J8 D& j. G9 K0 W1 f6 C
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
" r8 P, G; T9 s- f1 W3 Y/ d  E. A) b9 j0 |/ u  J
0 H! |! J! q' C6 z) }' Y" p9 A9 u2 A
get-global-proportion
+ R9 S: d( \" Z& k" R8 d8 r( H) nlet trust-value
+ C: I* f. I$ r4 p& tlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
  P$ S, K% m( T" }. q
if(trust-value > trade-trust-value)8 t, f. M1 Y1 k) K/ i
[set trust-ok true]
5 F. x# t( K" r3 bend7 G. L+ W. e( Z2 c

+ `) A$ i" o8 X: k5 |3 a) kto get-global-proportion
7 ]/ B" M' Y7 U8 x5 C: _ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
: \; d9 r8 P0 z+ P* L[set global-proportion 0]
0 n% S* N2 F& k/ o[let i 0
0 T' z- O2 j# K3 S0 P7 k, alet sum-money 0. u4 z2 H6 v- o- G+ L9 V5 @* j
while[ i < people]; `% k* @- R! S& E
[
+ r# a# p5 W3 p5 p; C' m0 cif( length (item i- z2 p4 L* w+ u
[trade-record-all] of customer) > 3 )
; P  b2 N, Z) |3 V1 `; Q
[- Q8 t1 S/ L, W2 v6 m
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
% s* G% ]8 x2 d  Y+ Z! x( g]4 ~0 ~5 U  }! T* w6 F; Z; g
]9 K0 `3 g) J1 m' C0 \
let j 0
* {' H5 e" r+ ]3 Blet note 0% C, t$ k7 h* D6 H4 T
while[ j < people]- v6 f% M: `) i7 ]2 ^! \1 @- a* y
[7 X3 E! C& ?* [- l
if( length (item i
* H  `2 k: p( W) m[trade-record-all] of customer) > 3 )
& \. \- Y. ?) A& \! D
[9 E- s1 K# r( t
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
0 }& V# l# q; Y$ W. d! B[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]7 x/ B4 J: n& P
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]  B  G5 f: E7 ?  Q7 ~% k
]
! D9 Y# ]; l, J! @+ U]
5 D% o* u; z( J2 |set global-proportion note9 N. {4 p- _8 {4 m8 o8 {2 ^
]
8 s7 |! a6 M; g2 m7 wend; r$ F" R2 i9 g. W1 N( ?
) }! }$ F# u% Z. z; b% y) B( a
to do-trade
& K2 @, d7 t! @;;
这个过程实际上是给双方作出评价的过程3 ?- P+ k1 r1 [
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
! H4 M% u' E* W* |& l; N7 |set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价7 D5 o: R2 d& \% P  a
set trade-record-current lput(timer) trade-record-current" v/ U4 n7 P& q) Z4 k
;;
评价时间5 d( l; |+ a" J5 J, W+ \& P
ask myself [" q. g* h$ K  v
update-local-reputation
, E7 ?$ @7 C; ?% x$ I$ s( |set trade-record-current lput([local-reputation] of myself) trade-record-current
; ^4 b1 P- V: u9 S]
) h. h, V1 [: ]: d: a8 N% Q" e- dset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
: h- F4 d2 w% ?5 H5 [$ e+ n; G4 l# `;;
将此次交易的记录加入到trade-record-one$ u+ @/ S- s5 k# p2 t6 [7 p
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
/ [) a. G( _  H. o  wlet note (item 2 trade-record-current )- y+ a6 f' W. z1 t9 v
set trade-record-current
8 o( b2 \: i6 y1 Z; c+ n(replace-item 2 trade-record-current (item 3 trade-record-current))

  ^4 x, E3 Y9 A1 \! ]& c9 sset trade-record-current2 P1 G/ f6 W7 G: E- t! X8 m3 O
(replace-item 3 trade-record-current note)
, q5 k5 j3 K" ?3 g' N1 C1 @5 P1 w1 k# L4 m1 v, l
7 g7 U: a! U# z/ |
ask customer [
8 L3 ~& i7 q" y" F/ f( Zupdate-local-reputation
: k1 ^: [; j* a+ u3 Z* sset trade-record-current# K$ R6 Z+ b: l4 Q' |& G! d  o
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
5 g% E) u* E7 b) x2 {5 `
]/ R" P8 k) ~! V- o/ k8 X# M
3 l7 J7 _! H9 o+ |
* p  H3 q# T! z% K
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
/ M' x2 C/ b8 u$ @) q" l& L+ p1 q+ _
- l6 ?; }- p  {/ R0 G. {6 B0 q
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))% N+ v5 j7 Q) y. m  `2 R
;;
将此次交易的记录加入到customertrade-record-all% n; K0 B  E* e0 B
end! Q- M% h$ _3 F8 C! [8 q

  v- ?" B0 Z7 z  A! Y$ _to update-local-reputation
- H  E- W2 K- d% }! Y! F9 T8 Xset [trade-record-one-len] of myself length [trade-record-one] of myself
0 N) E' e3 F& |5 d' K# Z, W" E& h, u
/ L2 y$ ?* V1 {8 {  q+ f
;;if [trade-record-one-len] of myself > 3

! X  |  G3 e/ o0 E( C1 s, _, Supdate-neighbor-total* M6 Z/ a/ Y# r
;;
更新邻居节点的数目,在此进行1 j; ~1 A: w+ `( h# S% H
let i 3
0 Y8 ^" A0 i. Ilet sum-time 0
1 Q$ w4 B! |1 Z# M! g+ [/ @  ~. Bwhile[i < [trade-record-one-len] of myself]& E" C- b, F9 }* z: W! `
[1 n6 Y0 i% P" e) s! N
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )& s; Z/ G7 ~9 _9 V0 X
set i
2 [7 o8 O* o. i" _, |; ?( i + 1)
& H* A. M6 C  X( X7 @' u% T
]2 [5 R; p6 |* D+ V5 i: f# L) H
let j 3
4 O5 E$ M/ ~' p  X7 `/ K. h' P9 |let sum-money 0
! G4 }1 f9 ~+ @& I; Y6 Xwhile[j < [trade-record-one-len] of myself]( I+ q3 U  m+ h4 f
[3 d% l9 L) n% |0 N# V- o' Q
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)
: L( ~5 `% G5 c# tset j
2 |4 C$ d% b3 x/ C5 p/ g6 t( j + 1)
- I; f, K7 V' s! N. Q. O4 T: A4 f
]* P: c- \8 j! m9 [# Y
let k 3& S7 l" F3 X0 z( R3 E9 k* M% }
let power 0
$ V; R/ r: ~7 h2 Vlet local 0' E6 x" u! b( V# Y; {+ ?
while [k <[trade-record-one-len] of myself]
, y6 [3 c# K% U) ?9 N* q6 q[4 {" L! G  c+ }" _
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 k  l( J/ w; R
set k (k + 1)
% q+ q0 S4 i& Z( R  h  a+ q]
8 c1 U# b& s/ \, rset [local-reputation] of myself (local)
/ s9 \6 X" z2 E  A* \' ]" N1 lend6 U$ g6 b3 X8 B- |
% v9 `6 ^; r9 a
to update-neighbor-total% ?' W; A; C/ F6 B6 u4 ]7 s$ n3 K9 Q$ ?

: N; R# |. D1 C! r; v! F+ Xif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
8 H' V3 {2 I0 ?9 X6 Q5 D/ L  H7 P/ c4 d" N4 u) ]8 v! F
7 H# [" Q0 e) M1 V5 A0 \
end* }/ S! r; W4 Y' \% y+ ]1 `6 A
) e* z! ?! y# e: A: c' g2 R" G
to update-credibility-ijl 9 Q1 W. O: E4 g7 L4 U. c1 K! q
8 e4 @* W) ~" ?0 Z" S
;;
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。
3 c- m- V. t, ~7 t) S+ Alet l 01 P  |- L* P: [5 B# ~, v! i8 B
while[ l < people ]) A0 F8 J8 C7 j2 |& E5 D
;;
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: C+ M. ?/ P6 e# {" e* d
[
4 k( T3 R" @* S, Jlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)2 y5 N. [6 u: a' T. i1 G! A
if (trade-record-one-j-l-len > 3)1 G" F% j' [! }
[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
5 o7 J7 N& q$ v- w6 {let i 3
" @% r) o( \. I1 ~7 r* Xlet sum-time 0
7 \& n( A) y0 M' i9 s$ ^* Cwhile[i < trade-record-one-len]% D/ H6 ]. o9 z, I
[: ^  w6 C/ z# c! _
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )0 S& v* z6 c' n$ O
set i
  n5 y# A/ C) Q- ?1 S( i + 1)

/ F% ~" [# s1 l" v7 D( f]
' M# W1 Y4 Z1 @9 q& O# nlet credibility-i-j-l 0
  b5 d1 i) a8 M: U" k;;i
评价(jjl的评价)' @9 q8 }! S/ @3 w
let j 3& h2 I5 p; U1 u' ^
let k 4; U; j! S& s0 B6 \
while[j < trade-record-one-len]/ ], \/ E1 P' ?& t9 P
[
! I! r- N+ j* c" R1 J% _8 `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
" M% q! i/ r9 d* h) E- b+ qset 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); @$ ?5 V" h) @0 I' e, h  P9 I1 ~' h
set j
' Q: z- V' \( s. D+ t( j + 1)

: \, r5 [5 x( {+ K5 h4 L# U]
% O, {$ V1 m7 H1 l9 Bset [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 ))
1 i6 b% E; Y* h+ M: i1 S) o& e0 k0 @9 d' I+ @4 C5 a7 |) _& e

3 ~- s, i% R" j* h$ d* T  \let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)): o  |. ^/ @  y: o; \' J1 N+ j
;;
及时更新il的评价质量的评价
$ k9 ]% v9 x/ h$ J& g4 h5 m% Yset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]2 g2 T% e0 N+ x7 O$ F8 j6 u7 J
set l (l + 1)$ C+ p7 ], e. Q  |' |
]
! v1 K  R& C8 r! j6 \5 M0 aend
7 ]7 j5 h6 n3 k  x4 o, E5 R
* e& z6 [; i3 z4 F. @9 vto update-credibility-list
* U4 d) g* W) G1 T! Q/ hlet i 0
9 I- t) Q. s. u' [! \; @, y* Xwhile[i < people]; z9 |) ?4 i8 }- r
[
! z3 ^& f5 \- v3 Z3 q. ?& G. Z% Vlet j 0
+ c% f( z# Q  n4 ]& }let note 0' D; ]! W' p+ l  N. `! k/ _4 m  s
let k 0
+ L6 d# a" @' t) S* g;;
计作出过评价的邻居节点的数目
$ h) E& F* Z! c. w! }* zwhile[j < people]' ~! j* E3 c3 ~/ i. C/ [$ e  e) p
[
% ~" c: s$ U# P5 [% zif (item j( [credibility] of turtle (i + 1)) != -1)7 e5 _! r5 q) F
;;
判断是否给本turtle的评价质量做出过评价的节点
: _* s+ V& B) g2 h6 E$ c* D0 K0 b, {[set note (note + item j ([credibility]of turtle (i + 1)))
' j0 m" e0 |8 C;;*(exp (-(people - 2)))/(people - 2))]

: `. [% ], D! i& C2 rset k (k + 1)
$ _  n! H5 z" ?) q$ z8 V]- C% R' m. o/ f4 A
set j (j + 1)- f5 G; y3 X4 u) m$ G
]
. u8 Y  X" H5 }5 Rset note (note *(exp (- (1 / k)))/ k)
; R* y$ ~& e2 K/ @set credibility-list (replace-item i credibility-list note)( }8 G* R  u: o
set i (i + 1)$ G6 m) [. Y- b" M# O- K3 S; l$ B
]( [9 F7 Z6 f3 ]
end% U& y7 r( z9 w5 q  n3 S

( o; J6 `( u0 L) m' wto update-global-reputation-list
3 p' k+ S  Z; {* V, y9 j# P# ]let j 0
2 X# Z8 A) U7 {( f8 @9 D! ?while[j < people]- W( Z' S9 x+ ^- f5 H* e
[3 L) g5 D4 I7 ?' S  n) h  c
let new 0
: X7 e1 G5 H0 e5 D+ I& p; G# o! T;;
暂存新的一个全局声誉0 _. `6 [: ?+ Q& b' Z0 h
let i 0
! ^! `- i) Y* zlet sum-money 0) }( `+ c' j* \3 K" ~
let credibility-money 0" q1 Y0 f# z) K& d( R, @$ v" h) D3 d
while [i < people]
  L! Q8 X6 S: k/ e6 V- z[
5 w: g0 [* o( u- m% v5 sset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))3 x( X. B" x. \/ f0 `
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% x) J6 b6 S" O3 F: ?9 pset i (i + 1)
+ g5 H: T& b& S. M" b8 r: F]5 F. z# B' w$ S% ?3 G* z1 m% h+ F- K
let k 06 d3 @6 ]' w7 Q8 G+ y
let new1 0
6 d  \* B  H% I1 O5 I# p4 awhile [k < people]0 u% Y& Y- Q" A' K& ~" f2 S0 N
[
: J6 b# T6 j+ }! I' k8 x! Aset 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)
. _& x" ^) G/ j9 L. eset k (k + 1)
% Z7 R1 Z- ~. z]) {2 `% c% L8 j7 x2 w
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
: K5 K" F# |8 E" F6 `5 [: i' pset global-reputation-list (replace-item j global-reputation-list new)
$ C' }0 u/ Z$ l% c1 ]set j (j + 1)! i+ q% d6 b# a) ^+ Y3 H
]9 m: R* c  V3 {
end
( {/ ^* n: M( b. P, c: D5 Y
* a9 `1 N& b' b* X& y- v
* N) J, t$ Q/ T# E2 r( Q1 c- c& B% Z) N5 m
to get-color
7 E- M2 N6 V1 \! t* C" n  A/ p$ p, P7 S) Z* o
set color blue

$ L3 ?4 V: r4 J, r' eend+ x$ n% a  m# G9 l3 a2 C' Q1 R
7 X8 e9 H$ R9 y6 O/ X, j5 k
to poll-class) I; u: N5 A  C2 t9 l
end
" L- W, R; I. W
, A# ^, n8 r: t$ U; e! E3 K8 P5 X0 Tto setup-plot1
/ S8 s5 F2 x$ A( R" L4 l9 X* X: b- M* s: o7 o4 K5 [
set-current-plot "Trends-of-Local-reputation"

* o: _( e# d9 e, ]5 Q
* j" y: P3 d5 ^set-plot-x-range 0 xmax
3 _$ w/ r5 u. m+ k
( D, t& [' _# b3 V
set-plot-y-range 0.0 ymax
8 o( i! {9 U+ B0 t9 S; r
end& T: u8 {9 R7 y7 k2 ~2 {

% f; n/ z$ o* e$ f/ i3 K# q; yto setup-plot2
, M5 @, v, V. l- v2 ~! H) W$ {9 T. n7 w2 z7 D: E) a( |
set-current-plot "Trends-of-global-reputation"
3 R/ b4 h8 c' _3 X& L
; A" W$ ?% f( P& u. k$ h( \
set-plot-x-range 0 xmax

, J+ c* C1 @. z5 F$ l
2 u% E3 C' g- V' [- ?% |& yset-plot-y-range 0.0 ymax

3 }" T. I" b+ X1 Z  U( gend: U* J' p: ^1 g
0 a% J0 U/ [7 |* ~) [& A
to setup-plot3, z1 g  y6 [1 A5 t

" _9 W, q0 w. {1 C" mset-current-plot "Trends-of-credibility"
8 A. h; x1 Q" @! O/ ]6 K, i$ \

( i& f0 n* L) ~1 ^, P# [set-plot-x-range 0 xmax

3 e8 v7 |- G$ P! l' P9 S
2 g$ |7 F5 n. ?7 F$ `  t/ dset-plot-y-range 0.0 ymax
" W1 _; g0 ~: [: i6 H) e7 l
end
/ T6 d' c* j, ?2 l+ `/ S% C% P/ l4 `  ~4 [
to do-plots
: u9 g* f& c/ N2 s0 uset-current-plot "Trends-of-Local-reputation"! q3 y$ I% q% W% _6 b
set-current-plot-pen "Honest service"
0 e2 u4 }$ O- u8 i# Y, Qend
# S5 S% ^9 T5 f* _. q* k
" |) P2 u; k* D[ 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.
$ }( C  n0 k* u( b3 [- y" ?- b; Y1 H& q9 y) k; I' l* ], c
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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