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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:& \! }3 `) i/ V+ s0 p
to do-business ) W: t8 O; o  @4 o' {
rt random 360# K0 w2 o% k( I5 q+ ]5 x; f5 m. x
fd 1. U% {5 O1 ?' m) T. G* l' h5 b
ifelse(other turtles-here != nobody)[$ [; G* p# `8 P1 q& k0 A
   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.2 W( z4 c2 c( Y- w/ o* a: g$ V
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    - @2 S1 }$ {) X0 F, U, S3 r' r
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer% |) V. n5 y0 u/ J3 A/ \; w
   set [trade-record-one-len] of self length [trade-record-one] of self8 l7 [  A, s1 Q; r9 }
   set trade-record-current( list (timer) (random money-upper-limit))/ i% E: s  ?: Y. f" _( c% |

& M- ?2 a* h; M5 A; U问题的提示如下:: \: k6 i2 N- i( h; n, q1 [7 ]
) I5 {' f# \- V9 i
error while turtle 50 running OF in procedure DO-BUSINESS. U0 ~# S, O$ s: Z7 H# S5 ]
  called by procedure GO
7 H/ L. A% K# e; N" l( B+ S; zOF expected input to be a turtle agentset or turtle but got NOBODY instead.1 B" i1 l1 q  _! Q: A: y) d0 D9 x
(halted running of go)0 ^& |: B* s6 R& S& p; C

8 B: o! j. V+ \- q  D: K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 F1 |  D' E: Z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) B6 ], r( ^3 R
globals[
5 Z9 Y( P; P3 p7 @7 |% b- @) Zxmax2 W1 {" s5 J" T/ P! W0 v
ymax
4 ]1 Q  r; }0 m3 {- s! t7 ]- Jglobal-reputation-list
( d, l% a: \5 U* x2 N, u' j
/ E5 Q: ]5 j- Z7 ~# Q: R;;
每一个turtle的全局声誉都存在此LIST
. _6 i6 a( I9 c- u2 M% mcredibility-list
7 [) P2 B) A, S: u% O5 k;;
每一个turtle的评价可信度) [1 A/ {3 t) m# q* t, b
honest-service/ H" h+ s3 Q' e% ^; {7 P
unhonest-service: x5 U- c( M; u4 g5 H1 B/ m
oscillation
2 k  `2 o4 G  N+ xrand-dynamic
6 h: [- `$ Y, w2 d! Z+ d; ]]
: W1 J8 \* `$ O4 c$ N. B$ O+ E% O% Q0 z) \* M
turtles-own[# s! M: D2 K( v: S
trade-record-all, I6 {% @) e" `" |# z5 a
;;a list of lists,
trade-record-one组成$ K  O6 J" e  l
trade-record-one$ h: h9 A$ @9 ]; s! h
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
; C3 M& G- j( i$ d% I3 y
  W- ~. G/ ~. u" u1 o# m! l' j% y* z;;[
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]]
$ |) I2 [. h) s9 f9 Atrade-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]
2 z, x& B" c) o4 L- U4 ]+ ^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
  R' p4 M: e5 X1 |neighbor-total: Z( g) h. P6 ^7 {( r* s
;;
记录该turtle的邻居节点的数目, Q2 b, f* j8 j8 Q) S2 t2 ?6 W
trade-time
, }; w( Q. R! V, E;;
当前发生交易的turtle的交易时间
) z$ L* ^2 d0 w. R, dappraise-give
0 q% s* I) A9 p3 Y- H# g;;
当前发生交易时给出的评价
% p4 v( a0 s" P. c! ]! P& @appraise-receive8 ^$ H# P, W6 Y9 Z3 W
;;
当前发生交易时收到的评价
1 J4 {% O- M6 Oappraise-time
5 [& e% r1 s+ c- N5 \;;
当前发生交易时的评价时间$ n9 \! W" t# ^$ c
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
6 v0 a" U% E4 C: |$ Mtrade-times-total9 U1 G8 e% q# o, ^+ r6 W' h
;;
与当前turtle的交易总次数4 ^3 B/ D, ^9 u( }9 ~$ Y& O- v
trade-money-total
" y- D2 o( j$ z, q0 a;;
与当前turtle的交易总金额( m; q# O2 F1 o# E2 ]+ V
local-reputation
0 J6 Z9 m6 Q5 B' aglobal-reputation
7 D# Z% Q6 U5 ]0 _  \! _credibility
0 c) T* @5 p4 h2 c: d4 V" C;;
评价可信度,每次交易后都需要更新
1 o( e! l0 v' X) }4 y) E5 mcredibility-all
; `8 w+ a3 d! s4 }$ 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5 P5 t8 M- G8 @- s& z1 A+ b
: g2 ]8 h2 U, ?# m3 G" m4 p9 b! T
;;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 z" u" Y% l, b& ?% l  `0 k* g
credibility-one
1 y( {% F/ K% B# d! y: b* ~( @;;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
. o% y  }  L( Wglobal-proportion: X: R( O$ Y6 _/ g
customer
8 u. S6 M3 o7 G0 h+ ?  @customer-no
+ f+ w/ P) K7 [; I* Q" C4 e. Htrust-ok
  O8 O# V& Y( C! |. N% }+ y4 gtrade-record-one-len;;trade-record-one的长度
5 i& M4 ?& v5 N]
, u7 O3 m+ I, p! [( j  l7 e. ]! r9 t: H4 u8 ~
;;setup procedure
4 j. N  D) @  M1 Q2 Y' X, Q3 N5 _3 }
to setup3 U5 Z7 v( J$ C9 W9 O5 Y
: h: p) j8 s7 H1 O9 Y5 A2 U
ca
# H9 t4 C; c& ?

2 D* K. K7 X4 X4 sinitialize-settings

8 ^  p) I& Q5 k+ i' [& K; I8 y$ H# E1 `5 V! X
crt people [setup-turtles]
  Z( |, ?! _3 s. n4 F

6 W' \, W) P8 W7 S3 W4 A  |reset-timer
: c7 p; s" ]1 ?6 n/ i) Q

% P2 a7 a2 o# a. O' B& b- J! d4 N# D- Bpoll-class

: p0 k8 F6 s  w1 u7 [- s$ b2 @4 k7 _4 D7 n7 k
setup-plots
+ v5 O2 H" a6 L* W

# o. d% j* V& U* q  s$ I- mdo-plots
0 I  [4 K: h  @$ j2 t
end
$ z& ]: x' Q9 x5 U
# A) c" w: w' u% s, n- [5 A' o6 qto initialize-settings% l) \6 ]" d. ?! H+ U) {  y5 W  _
+ j0 B5 z9 y0 H) g! i7 E
set global-reputation-list []

" S( S0 ]! L. A. W5 l9 X- [$ `. L" Q# J' T; n
set credibility-list n-values people [0.5]

+ [* L' }/ n% y8 Y0 X
3 j8 t  c8 H* S( O% Kset honest-service 0

  |. x" y0 r. M. O* U, i/ m) F) u: J. L
set unhonest-service 0

' T$ ^9 r4 }" x/ o
3 m& v) G9 d5 F  f" O  lset oscillation 0
# i6 R4 G9 j  w7 M  ?) t9 P) U/ q

/ f6 w$ O: S$ G, j( R" Fset rand-dynamic 0
- ^3 _# s* s/ g9 ^
end' \+ z: M5 d* I3 j7 x. b

2 D4 O8 s0 a% G3 [. I3 F9 oto setup-turtles
9 T) e# Q2 B2 a8 U$ Fset shape "person"9 y  }" Q1 R- e* }4 T* |
setxy random-xcor random-ycor
# L# p: g: z9 Cset trade-record-one []5 J. l& J; g% a! _8 o3 x+ i# ?

5 n0 Y7 {! M. g$ `set trade-record-all n-values people [(list (? + 1) 0 0)]
0 H# l5 s- `7 ?5 O

- Q# S/ A# V' d/ U2 Aset trade-record-current []3 ^  W. d' W9 E1 D
set credibility-receive []8 D* T  f/ w( y! f5 F% l' T
set local-reputation 0.5
( n* C' h& X* g( k" Oset neighbor-total 06 ~+ j* l" `6 j, r
set trade-times-total 0& v+ n2 `% R8 y, |
set trade-money-total 0
  m0 a6 f' U- y$ X. ~3 }/ _8 qset customer nobody6 E% i0 u  ?# J' O1 G% t; j
set credibility-all n-values people [creat-credibility]
( m1 ^  |6 @2 e9 }3 C" Y. _6 Y2 Kset credibility n-values people [-1]
3 U$ D$ E. B- O8 x! V1 jget-color
$ j$ q, P5 ~+ o) z/ z' Y

+ M' q: l) m5 z/ Q4 R1 Fend
$ D, R4 K% `1 c, K0 J! M
! j0 C8 E% c+ o6 w1 Zto-report creat-credibility
8 u: O$ X$ ?* X. K+ @8 h1 N; O: G7 ureport n-values people [0.5]! l& ?: `, d. O: K3 R
end
- ~& V" C( J, o5 c( l3 ]' O0 k  i- I7 U! Y3 d4 G8 z
to setup-plots, s; E8 {* T' d% f

7 o# }+ _; n: R; K0 g( jset xmax 30
9 J1 r; O% i8 a" z

/ Y( @( [7 c5 \! M6 E  ~; ]set ymax 1.0

, l5 w/ m4 v& \" v
* b* N/ n4 X. {clear-all-plots

& n+ I- M% [3 s% M: e, V2 i9 B" b" n
setup-plot1
! S5 c2 s  E7 b2 A; W! S, `; v

  ~: v% s$ X  O" qsetup-plot2
  D( P6 I' ^! X; m- q: i. Z
& t+ T. A! a2 ~7 ]
setup-plot3

9 E) i* H5 Y. u9 M4 v  ~( aend
+ A; m: H) D7 y' A  X2 g
5 A& {$ I0 y2 X! o: m7 p/ `" Q;;run time procedures
" T, Q: A: F$ }8 M  s$ P8 Y1 d) \$ q4 ~2 h( X# t2 Z
to go
+ o% B6 K- d- y7 C+ ^
) t" u. S1 l  S# |ask turtles [do-business]

' Z4 L- F4 y5 ^; a: iend
! Y+ [' N! |& J: c  u9 j  D6 U9 K1 b5 [  l* q( j
to do-business
- Y1 y) F, X# A9 ^" c2 f

9 m( d; y0 o- X: e2 m  q0 ~; L+ k" ~$ V
rt random 360

) A8 h$ d1 s$ ]0 A. F$ f6 a, v" i# {% {
fd 1

- z* ]( E1 J8 H+ A! f) ^$ a; I3 I; `/ L$ ^9 y
ifelse(other turtles-here != nobody)[

& X1 A$ N  G: q2 ^3 H( i1 p1 Y1 s6 x8 i9 p1 q2 v4 V
set customer one-of other turtles-here

! B& i) F  w% m! e: Z' z7 V5 ]
* e! M0 f) l. v( ~5 ?- \;; set [customer] of customer myself
+ b8 u5 Q  X! P, n, O# h

2 }: o0 ?8 l6 `5 ]5 Tset [trade-record-one] of self item (([who] of customer) - 1)
+ d- c. f* ?8 H) J[trade-record-all]of self
/ k6 P$ G# \, @% |* _4 T+ w+ x% L;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

+ \. @  v- ^. O" F% e4 F5 H2 k. q
3 \3 M' Y  ^4 Q" T% }  @8 Q6 h3 Cset [trade-record-one] of customer item (([who] of self) - 1)* W5 f; D, V$ a
[trade-record-all]of customer

' l) y6 T) v/ r7 E( a% d  Z0 z$ ?9 }% n! p% x
set [trade-record-one-len] of self length [trade-record-one] of self
6 `$ Y3 u; G& l( C- A+ Y4 L
1 p; F# A1 |1 H
set trade-record-current( list (timer) (random money-upper-limit))
# K' H# t) m/ m

) ~, e7 D: b6 K- Z0 Oask self [do-trust]
, t7 e8 U. P: h0 G0 b;;
先求ij的信任度
: Y* h6 j" b+ q6 `; ?4 s: Z( B4 f: w5 b3 R1 t9 t
if ([trust-ok] of self)
" N5 D+ ]2 H% P;;
根据ij的信任度来决定是否与j进行交易[
" ?# W4 O' [( B! b* Y5 g) pask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself; x" r& M* b  z/ R2 P; G: `$ e2 }
) Z( C; k3 \: Y& _5 g6 e
[

0 a7 U6 ?1 I' Y9 g7 V# x: @9 i1 w  T2 y5 E
do-trade
  e" f8 J6 G$ W) ^: \* r

! Y1 O0 i4 J( u/ iupdate-credibility-ijl

  i" V7 B$ V: F8 r( p* y6 Q5 P9 P' Y6 M- ^3 k& ]9 ^# Y! l  N
update-credibility-list
; ^, }3 Z% X9 |: O7 X$ E

) ?6 j( c1 v2 S7 d/ v" E0 n
* @, Z' i/ B4 Cupdate-global-reputation-list
4 O* G( O* V) E2 P/ m( K$ S
$ Z2 F$ I7 {# a4 O2 }
poll-class
$ F) r8 @4 ~8 N7 a, ]1 ^

6 I: s; j( I/ {get-color

. Y. I$ l4 h  L: y* ]9 {. r& i; r% f
]]0 x& W6 t# Y* w3 H& J, U$ s
; B9 s1 z- V, f' O
;;
如果所得的信任度满足条件,则进行交易* ?9 @- ~- i, Y( A, x) ]$ K
4 K6 v- O1 z6 B8 W
[

: U. t* O8 h/ K% k0 J3 ?0 H
; l  z3 @0 b. T. ~0 brt random 360

+ ]( c6 W" @/ w4 b6 {6 h$ M+ J8 E# J" Z, W! Y0 j
fd 1

* F: K- V6 H8 E8 z1 P7 t$ f
* h3 y( l# O3 C  [  v]
4 X0 p3 b: T8 n& ^
6 q, N/ [" C9 N) }9 X2 s( v7 `
end

4 D' W. ?. V+ [. }' O
# a" J8 B0 D9 P8 H. w- H/ [, Ito do-trust : D2 D9 J* ~. c4 A
set trust-ok False
: Y8 A- [" r, v  K; t  t  W* w0 ~7 O9 F. A  `0 d$ o
  n6 y+ @8 b6 K. }
let max-trade-times 0: L( P- o$ z+ c5 O
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]& }4 V9 [/ F8 v5 s1 C! r
let max-trade-money 0
9 K: N4 q- E% I) tforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
6 q3 ^4 c& }$ tlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))( J# D% _% K+ e' E3 F$ E3 o" f* w
, J5 N6 d3 v+ ?! H
0 j* a# i" }, C2 g
get-global-proportion
/ s+ r) }% y9 v4 O, Olet trust-value
! K% X2 P( M: y. {local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

: A) ^% ~  ?  a3 y; P8 mif(trust-value > trade-trust-value)
2 H( D8 U5 i9 Y* w[set trust-ok true]1 @0 ^$ q; Y1 ^5 z
end
4 k2 R; C5 D; j9 S+ R' o; ^
! C+ z+ }8 k4 Hto get-global-proportion  ]4 K, `. ?' ~( W# T" \! V
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
9 r' d# ]' U8 [[set global-proportion 0]7 b, r" N. Y9 A# [+ l% i9 l
[let i 0
* \' z5 @2 M! J4 p5 W! blet sum-money 0
1 x* c- e. z2 A1 l4 a1 |while[ i < people]
6 K1 h9 O: R- d) a4 H' w[
8 P5 w. u# C' [if( length (item i
0 I* J6 E: c( G" w[trade-record-all] of customer) > 3 )

, Y$ x, Z7 l9 i2 J[
' _5 m8 C& M5 B5 Y& N! |3 Pset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
+ e! I2 D; W% U! Q: P+ v) _+ B]3 g, H, \6 G! o# L8 H% Y
]
4 p  j& t$ o6 r+ Klet j 0% V! l% Y) Z6 [6 `& Y6 e- P* V
let note 0
% {4 Q  D$ c6 @5 S7 gwhile[ j < people]; A5 d5 j3 |8 n" i8 C
[
' v7 P: t1 G+ E9 o4 e4 O# zif( length (item i5 W! E* r4 E! @3 n% v* t
[trade-record-all] of customer) > 3 )

  m6 E6 n* X4 p[4 t, ^3 q  \8 @4 |0 i6 \% h
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 p2 D  w4 y# v" g5 J3 ^[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]7 z; a% S' {! \( @/ i
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
( A: m7 w* H4 C" n]) X1 A6 x( }- P! P; L
]
& z# p9 p9 g$ {4 c+ `% w  M6 Mset global-proportion note
# y( u9 F9 i. {9 Z* q& ]" Q4 s4 {]
9 f! Y2 A1 W+ p) v4 k. hend( ~1 P  q/ [+ [: G
; G% n. x! s( F) v8 m) d2 S4 s
to do-trade" K* c. g  _3 k  \4 H, U! {
;;
这个过程实际上是给双方作出评价的过程3 ?$ r% |1 L9 }' X. \4 I
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
! R9 n- [$ Z0 Q6 l, tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
9 Q: l+ W) `+ B$ u- Q; x* cset trade-record-current lput(timer) trade-record-current9 s' }! U: i: @- ~: R
;;
评价时间# z  B9 V0 x6 _$ }% d& C& o
ask myself [- P: W" a2 L0 w2 a$ v  n
update-local-reputation6 q" r7 D; k0 E% X
set trade-record-current lput([local-reputation] of myself) trade-record-current
+ ^% S5 E) J3 C% g2 [- C- o, e0 U]
8 a# |1 y& X6 U3 D1 R. @set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
/ N% N6 R* U( N( |$ t9 O;;
将此次交易的记录加入到trade-record-one
3 W1 K- V+ S5 D% T, n! oset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)0 X5 _, \! _: H# P$ P* {( B1 [
let note (item 2 trade-record-current )
5 \+ |% U. E# F; J7 oset trade-record-current! |4 Q2 q, n3 r' a7 c$ X5 N9 y
(replace-item 2 trade-record-current (item 3 trade-record-current))
9 g9 A% c: }  u7 K" a8 {
set trade-record-current0 Z* Y) s9 {" F/ C2 S
(replace-item 3 trade-record-current note)6 c/ N$ ]8 T  }" E* J

- Z0 r, T% J& [: P  u! M. g

- d! O- [3 h) _' U. ^ask customer [
) `7 V* A* Q- {' a' r$ H$ dupdate-local-reputation4 Q9 a6 o: u9 V' }3 \
set trade-record-current
" h3 Z) P% J9 `8 \2 V(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
  B' Z  `9 b. l' ~* F
]
6 ~& r, P, K. d, b6 Z' v$ F* a3 M! ~" E4 y% l2 p( R2 C- k# i$ d. d
# v# l4 ]! Z4 V. H- \
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
: f- |3 m; P7 @. W3 F
& D- e) Z, x" I" q) g
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
& Q6 o( ~: E; r! U;;
将此次交易的记录加入到customertrade-record-all! @5 c: C1 s* k+ D  Q) a; h
end
; _0 X6 R9 E- U
' U) a' }+ l0 M# J$ l7 {! _7 @2 ?to update-local-reputation' O$ U3 P% ^+ S  S, i
set [trade-record-one-len] of myself length [trade-record-one] of myself
8 }* u7 z; X3 Z$ H" f' T0 I% d" h
4 ?) r1 D- Q, p6 e' ~( S: x/ w6 u: n! M! @4 O7 J
;;if [trade-record-one-len] of myself > 3
, @) h' H/ J& X
update-neighbor-total
) {: c1 t' h7 s- K8 D. O$ o; f;;
更新邻居节点的数目,在此进行# R9 c/ F6 R: Q9 t- y( }
let i 3
' Z) V* _9 ~- T' ~let sum-time 0
& t5 X1 a4 ^) Xwhile[i < [trade-record-one-len] of myself]5 ?$ H+ E- Q, S5 f- X; H
[
3 D$ V# o. A% g) rset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )' d! b6 h, t: }/ _& U4 w
set i
( ^0 w' O8 C# R, K5 a& P8 W2 q( i + 1)

6 m  s( N9 r. t$ m3 r3 {: m) U7 |]
$ ~: ~6 O$ q: Llet j 30 `. \2 I% }6 [& i# E7 b
let sum-money 06 i" z0 R% N1 m1 f  M' O  e
while[j < [trade-record-one-len] of myself]0 l2 J1 W1 `# {, P( G, a& v2 Z
[; `4 F) s$ |, H9 ^% V- |6 G
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)
* M. \4 F& i' wset j* l0 l; w- T  n* Q0 d
( j + 1)
* x& _5 s1 w* t# e0 C
]! R; x  X+ b( R# N% e
let k 3, Y- q$ A' I3 Z( _
let power 0( _/ o5 |/ T  H, W- ^& }/ y% P
let local 0
4 n+ C- A7 ]7 V# s1 o4 U0 E; Cwhile [k <[trade-record-one-len] of myself]. ^' k% |0 N$ q
[
) m7 {4 A1 I0 T6 C  Oset 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)
- s. E" p9 w" F7 w5 mset k (k + 1)" R- a8 _  j+ z( o8 N2 X- f- h
]2 f: F  }8 l3 o6 Z3 J; v: w
set [local-reputation] of myself (local)% N" X" }- _. j9 j' N
end$ `1 m4 X! h  Y: U$ A9 T  k! M  N

; H+ ~7 O5 g- P& D6 S6 _1 Cto update-neighbor-total) D3 u, A; N* D3 E: q) r8 ~

' ?, A7 i- u, Pif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]/ R5 |3 S7 s0 z# R$ s! O2 q+ v8 B/ y
  y. U6 z/ H0 ~) f. e" g+ n. z

& ?1 @7 K, F; a7 Gend
3 {0 ^7 f: Y7 v8 `5 p4 B3 M; C2 s; s% N
to update-credibility-ijl ! s) T) ]- e, D  C) d5 x
5 f$ S* j. L1 x; 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。4 y/ T* q. X: A
let l 06 M9 k3 t9 P% U. o
while[ l < people ]
% Y* N: s( J; N;;
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9 K" p  F$ i6 w3 E0 y' U
[
6 P0 D$ o; ~' V. d, A3 {let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
- H7 ~, ?/ }5 t* Y2 T3 m+ M% lif (trade-record-one-j-l-len > 3)- j0 y( _/ E( m) h
[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# g6 ~+ {' [' d7 _! W3 X
let i 3. G2 T& l+ D" D
let sum-time 05 c1 ^. c9 J9 z( I( M3 ~6 M
while[i < trade-record-one-len]  ~- F+ ], ?3 }+ y, w  c8 V
[/ n$ a) z) _7 D0 D
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )" C( E9 H  e- b; x, j
set i
4 D3 \$ x# c  D( x1 \( i + 1)
' @2 W' A& I: D$ D
]5 F% D3 M! t/ [1 ~' @, ]; N" `
let credibility-i-j-l 0
, R! S* ~+ i6 N  x7 d! Q;;i
评价(jjl的评价)
( b/ g8 l) t4 R5 a+ k! Ylet j 3; x8 ~$ A& I9 O& n# _
let k 4& a& R4 Y! ^7 g1 z
while[j < trade-record-one-len]
8 ]* N9 B: L( }% ^! M0 s$ Z[
# d$ y9 F, `; \& J. ?3 b$ wwhile [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉' |. x' ^6 D# H$ A
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)
1 i6 c* Z3 T2 ?. Tset j- ^. x; `- b' @1 B, J
( j + 1)

* w- M4 `' ]& w# G8 v( N, n1 ]: i  x]
0 C5 Z' F/ d8 k9 f/ U6 jset [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 ))
& G, B6 A0 I& o5 G8 K
8 p; j" ]6 p: }# L7 u4 l. e

7 M' W# y" Q; v9 flet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
2 d$ b% h( V2 {  }: M2 u;;
及时更新il的评价质量的评价
9 y& s" \+ X; f& q& v4 n# _* Mset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]8 g, E. W$ |5 |  t- O
set l (l + 1): y9 d5 J( \9 R
]
% R) P$ y  \# A( }% C( r, \end9 Z* \4 x$ E0 m, ]
1 C- W/ ]" m( p7 _, D
to update-credibility-list
8 s! z. N2 o8 A" x2 @let i 0' B9 T/ c8 X, k  K5 i  r- G
while[i < people]& u, ~+ ^0 Z( p  `. _: c7 u
[* I1 Z6 [1 H5 b
let j 0
( c4 S( L: C: H% `$ n3 Glet note 0
0 C% k" w9 w  ]; _5 nlet k 0
* k+ X2 N5 e4 C  x. J;;
计作出过评价的邻居节点的数目. a& Y1 O) D5 S* |
while[j < people]# Q+ V* M6 v* b1 v
[5 e% @( V; Q' J# {9 U; a
if (item j( [credibility] of turtle (i + 1)) != -1)
3 G9 t8 q. s0 d0 y  a2 `6 _: o7 o;;
判断是否给本turtle的评价质量做出过评价的节点) M$ u2 ~9 G0 M$ |' h8 c
[set note (note + item j ([credibility]of turtle (i + 1)))
( Y; O! ]' x4 k! a2 n7 b8 };;*(exp (-(people - 2)))/(people - 2))]

3 w) e, n# f$ I" g3 e' Lset k (k + 1)
& P! \+ [5 D+ X; Q* E' v5 n]
4 O. b1 @* G. i$ a" X1 U8 f9 [% b0 Qset j (j + 1)1 e8 m. V2 z" h. C
]
$ L5 k# p+ [+ @  y) u' r% zset note (note *(exp (- (1 / k)))/ k)
) p6 A: W4 s0 ^set credibility-list (replace-item i credibility-list note)1 o" Q) P/ Z. g
set i (i + 1)) N' y5 Q, N& u/ D. S5 H
]9 h* |) ~* R. I* J, _2 x4 l
end
5 I: a! [0 {) r! c& k5 t- b
5 X/ H, w3 Z: c" z. ]( L2 Jto update-global-reputation-list
$ A+ L; t. H1 d' M  alet j 0
" b0 B1 V( H. B: v5 Q% mwhile[j < people]
( I7 J  a/ ]6 W5 Q4 c[
6 N- M# m# F% Y: {9 S; `let new 04 J8 l- J! g1 H: e
;;
暂存新的一个全局声誉
( A" q2 E: C: r  b! k' olet i 0
6 f- J" u: m6 l: F2 ilet sum-money 0  y) @# j+ F( U+ I/ ^) l, T, R
let credibility-money 0
+ P6 |* |* T1 M7 l9 Zwhile [i < people]$ s6 F* y7 I  S& G9 r) U9 |
[! q3 |1 E9 h( _
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
) G8 a% K  S9 p8 d! g9 Iset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)): e" f/ Z( c5 M; d- H# g! N
set i (i + 1). X) o# V# u* H6 R6 ~; A7 ]
]
) b5 z) _+ Q- P2 Z9 W( S# |: Ylet k 0- _: U7 Z7 P; Y; K; I! ], ~) @! W
let new1 0
. X& q/ _# [8 g/ g3 zwhile [k < people]: ~$ @+ |  o4 l3 m
[# N: F9 j7 u' R3 G0 P
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); {2 ~7 ]6 v& i, f$ B
set k (k + 1)3 `4 J1 V* H* }' g
]
$ k9 J. @5 i; g- dset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
" u% U" y. ^. D! Oset global-reputation-list (replace-item j global-reputation-list new)
" Q# |9 ?  F3 P: @- Fset j (j + 1)
( o0 D  I) b& V8 T6 {]- }6 ]  j4 ~  \6 U2 @, s
end7 O5 z& H4 I  P

2 i+ S' s7 @& F' y! L' U9 D, ]3 t7 T( r9 B" [7 t# W+ B' X
# g* Z# [7 S! v7 X- `
to get-color; J  ]. _* r: J' l/ `* S+ M
8 k: X0 h2 v. p. y
set color blue

0 v: c: A2 r( d; S$ F! fend
4 ?0 [# R/ Q7 ^/ I
( A* V: d; [; F3 Z4 cto poll-class
2 F+ Y( q0 C/ k- B* n# l, o  \end0 x$ B8 [; @+ Z2 C$ r

5 U! E; e3 A9 G5 sto setup-plot1( P# S- S  c6 Z/ S. a# X
/ ^- X9 D, m8 J( m/ F0 o
set-current-plot "Trends-of-Local-reputation"
1 N4 C# Z% o& e: m

8 f0 k1 i2 ~% vset-plot-x-range 0 xmax
4 |  L6 {& y9 @! M2 ?  d

! d, T! S% x7 W7 {& tset-plot-y-range 0.0 ymax

) }& z% x9 d& aend/ g% k& ]1 O4 q  d
1 d+ j0 J9 e, J
to setup-plot2
  v9 j* ]1 U! k# f3 @: p4 p- `1 K3 d" h5 n0 b; x9 D9 n( t
set-current-plot "Trends-of-global-reputation"

/ L' w8 ]6 t; r* s9 F* x+ v2 S1 W( r- B
set-plot-x-range 0 xmax
$ w% Q" Z' R8 R9 ^" z
# c5 Y, K' m5 C4 p( U/ S0 t
set-plot-y-range 0.0 ymax
( Z* [3 T4 w; l" D' M# y
end
( q$ a  n2 C( V  L1 R! }/ M! M* K8 e
to setup-plot3
8 V' S! M8 p  Z/ f- D0 }  P* \% F" @- l/ I# v
set-current-plot "Trends-of-credibility"
/ C5 ]( L) n0 V% t
4 U# [2 Z. b+ Y
set-plot-x-range 0 xmax
' M/ Z' r( B9 X
5 W- m7 J5 D; j! C! s% e; N4 N/ ]" t
set-plot-y-range 0.0 ymax

: \9 }/ m7 D( |  Rend) Y( t5 N& o% t# I
. T% V% {) }, A# i2 n1 Z+ T
to do-plots# M' `  S: x& D% p7 r( E5 a, i
set-current-plot "Trends-of-Local-reputation"2 h% P9 d" j8 n& R
set-current-plot-pen "Honest service"3 q1 p  ]9 O; W4 I: R" o! N! p5 u8 q
end
8 r' i6 v3 U# v9 G% i/ o! o1 ^4 Z; Q) G  m
[ 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.. W+ D  }9 m& z2 u2 ~" D( w

' v, W' j3 E# p2 E. O( {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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