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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:* ?0 u/ f( o$ ?( a) _( Z
to do-business
. f+ k. Y: M% n/ Y rt random 360# O# a! o! Q6 ?, |0 j4 c
fd 1& E9 K4 ]' P+ r/ `: [
ifelse(other turtles-here != nobody)[
- J" ^7 E1 ~. {( U  K6 B   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.. t. d( d* c9 q( z/ @. \7 o0 k
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
' ]8 ^! P0 f% z# t6 b2 ]   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer4 B# p7 u3 V; x; v/ g
   set [trade-record-one-len] of self length [trade-record-one] of self, R0 j' H7 f, }0 v2 H
   set trade-record-current( list (timer) (random money-upper-limit))
/ z5 P2 w) l# `1 |# u' G3 I' b1 v; s) ]/ x8 k
问题的提示如下:
" B# z5 ]0 s0 c" M& t2 k
! ?  h/ S- e  W! h" i% l; Y0 Z& Z7 \error while turtle 50 running OF in procedure DO-BUSINESS
) Q, r, i7 Z' e+ _2 v: B$ H& }  called by procedure GO
% Y) W2 r. W$ V/ ROF expected input to be a turtle agentset or turtle but got NOBODY instead.' ]" ?! H4 j4 f2 C+ E
(halted running of go)* S* V& C! `9 C

, m6 t' ]7 {* @; n1 O( w( ]* F+ K$ D3 M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~~
. h7 Y' f+ B# P! e: g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
. U# u+ K, ]" m' {, w; lglobals[6 }. g2 F$ o8 w/ B, V
xmax
' m6 {+ H0 g6 z! j3 Lymax% y8 w0 q' |( D! D" Y( d) l
global-reputation-list7 H9 s, A) u4 r5 m

' b# W4 V) J; Q+ C& N4 w0 j+ v;;
每一个turtle的全局声誉都存在此LIST
# y& d* g) t+ r; Zcredibility-list9 J' t8 F: ?6 K$ N# w
;;
每一个turtle的评价可信度$ N# H' b3 {' x* P, Y  b8 f5 O$ O
honest-service
  h: n7 d, D* J* m4 vunhonest-service1 A4 K* K- d# c, Z8 Y$ C" j: r
oscillation5 `" D* K0 _* b; d
rand-dynamic
3 _% q" b+ ?# t( c! }]
; `0 ~" [& n7 N2 `3 }
7 ~- g- `7 h1 n( I" \* Hturtles-own[
; X3 ^9 \) z1 m' }trade-record-all
1 ~& o  |' x( ]& z) Z! F5 H0 b3 a;;a list of lists,
trade-record-one组成1 q/ H1 `5 k$ J& u; B+ f" n9 S
trade-record-one2 g1 f. Z: E, ~+ w! M
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录6 f9 |( g8 I: b

) b* Y( D/ m/ ^& _$ y9 X;;[
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]]' }5 k: M6 h0 d! M; g) Y
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]
2 _( z- l3 G( n# ucredibility-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
5 l  `; n5 Y1 R  m- B+ Tneighbor-total
+ e6 d2 l* w, T: R  Y;;
记录该turtle的邻居节点的数目
' G. M( {. P. j# T: ztrade-time& I/ T- q6 M# D8 h1 j4 _# c6 r1 |
;;
当前发生交易的turtle的交易时间8 O" w2 _1 O/ d0 [8 J% m7 W$ S) a
appraise-give1 W0 d2 K# z) _" |# ?+ M
;;
当前发生交易时给出的评价% r* R2 t6 y% i) I. c" o* Z
appraise-receive
) w5 g' G3 T  U;;
当前发生交易时收到的评价
8 f) z8 @8 D) S9 Kappraise-time2 p: l9 y% G  m0 l' R$ _- G
;;
当前发生交易时的评价时间6 G1 i% \# M3 V: i' v$ ?+ |' Z
local-reputation-now;;此次交易后相对于对方turtle的局部声誉5 T" h* P. L; h4 y7 k
trade-times-total, ?  U* O/ R! e$ Z1 S, h1 t
;;
与当前turtle的交易总次数6 O' Y- H+ z4 O0 l$ ]7 G
trade-money-total2 W( u: X7 ^9 M6 P% z) ?
;;
与当前turtle的交易总金额
: a( }9 o2 U0 T2 l7 ^% T2 Blocal-reputation
2 {% Y6 B+ _! _$ K8 y1 Lglobal-reputation4 G/ n. p$ ]0 k- ^& T
credibility
" r, K) L# T  S5 h;;
评价可信度,每次交易后都需要更新
- ]4 M' o: u2 M0 j6 S% qcredibility-all
" j% U: G6 ^$ R5 I2 C1 y+ ^;;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 }7 U6 l7 Y8 a) z2 h! E  n5 g( C6 Y5 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
3 P6 q4 h# a: ]* L4 Mcredibility-one
  O1 e1 E( n; [, \;;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
- S0 b" F5 |' i: uglobal-proportion
% u% ^: a& Y- ^# B* `customer
/ x: b; n& r' s1 C7 a' jcustomer-no
7 v) r  {  F% |5 N( \/ h" X# atrust-ok
' `, U6 E8 u3 x+ Rtrade-record-one-len;;trade-record-one的长度
/ e. A( j1 _) s, h]
+ G1 Z. w  c) V. P5 K9 R3 d; m" a) r2 O3 d0 u: j3 F  c- E& t! K# z
;;setup procedure
) N! g2 }2 s: h- W( |
; A) c- c" \, F! r5 \to setup
0 J  V- D5 x* c0 d  k% ^+ @
2 ?& X, K9 f2 T3 K- G; _+ l( Zca

3 r. r2 a2 J; t+ R
; s7 l5 f" I; H" {& R6 Y8 H6 j% zinitialize-settings
5 T5 ]# l' U( U0 J& q

3 W1 h* s* D- I! Z  Qcrt people [setup-turtles]
' p% _* d8 J" T* N, r& r8 O
& `. U" ?2 G! u% [
reset-timer
/ t2 P3 i+ G4 e/ y8 A0 A2 T

3 v5 I6 x7 g7 Q* v3 E+ I. ]poll-class

& M8 g$ T" a) J+ q6 z8 E7 b2 y6 f2 Z  y3 X: I$ m/ Q& s5 d: D
setup-plots
1 `, n2 t/ d! [+ y3 _, @# \

; @' L: ]- G$ l/ G* gdo-plots
, N( |& F5 n+ b& N2 o
end
1 w4 E" @  R: X5 B5 d
9 R4 `0 f% t: A9 i. s7 u$ dto initialize-settings4 w' |* L) O* t6 j

: z" u8 t3 V' l, v* B0 n8 {set global-reputation-list []

8 T) w+ o; X8 o8 g( e* t8 o+ \2 M
9 R- X: [" B+ Qset credibility-list n-values people [0.5]

0 ?* Y. V+ a% ?: J' V, q  E$ l6 D/ K# l- u
set honest-service 0

& a7 _+ L# W# y. f  d5 ?$ S# z
- s0 B5 r) E' j+ j6 l( x$ Rset unhonest-service 0

  v+ Z& m' R2 y/ c2 B$ g$ S* n5 ^6 Q5 \5 X4 H
set oscillation 0
: q: e  c5 w$ L6 n5 J- b

0 `. A; M) O" D' H$ i# i" d( Oset rand-dynamic 0

) J0 I. G" D: s  D8 Gend# S; @' N5 L, g* J+ s. W( N
  B! l! g  B6 w. S  ^# r
to setup-turtles 7 H% l* `! T( i4 {/ X2 e  k
set shape "person"2 R' H, d( C9 W6 P- d0 q
setxy random-xcor random-ycor+ e& U. _! I& G0 J+ e
set trade-record-one []
$ m/ t9 k2 o' M5 _; ~* s( P

1 \$ C3 U$ ?/ P$ ]set trade-record-all n-values people [(list (? + 1) 0 0)]
+ h9 Q0 k0 i" O& J2 y+ w) v9 s
1 Z/ I4 L' o5 ^2 A0 p# A% x
set trade-record-current []9 C% M9 _0 l4 |* V- `0 I
set credibility-receive []
! k- F" ]; l8 p" n1 v) r2 J6 d4 R: Oset local-reputation 0.5
  k- K" n8 T( A0 J% A, k1 Sset neighbor-total 0
! h9 ^5 e6 R& D& Uset trade-times-total 0
  o. H" I5 i7 Jset trade-money-total 0
% w! v5 M+ C5 i( \  lset customer nobody
" j  z" o- U5 X7 Y  M; h+ s. v0 Iset credibility-all n-values people [creat-credibility]
  w% v. R* O; k4 v4 d7 z& r; u( iset credibility n-values people [-1]
/ S9 I4 A) X% X) dget-color! f7 d1 z$ `) n3 e
$ Z7 H6 t* ?, s8 v  V1 E0 \. s- V
end
2 d. D9 a  b" |0 B+ P+ C# x' Z4 U" c3 T8 D8 i
to-report creat-credibility
6 H( @7 g& P1 f# Rreport n-values people [0.5]
/ H/ S) h5 ~6 y& Bend
& I5 ^/ x4 n8 ?% Z$ ~/ x. }% J8 u' c4 @, W
to setup-plots* ^3 X% a6 n! S7 t/ j; i7 |+ m

8 {7 ?$ F( `! E+ {* h0 Y5 ^5 l( x( zset xmax 30

1 N! a: p" O2 T; i' T7 u. ~$ U3 t, t
set ymax 1.0

; u+ q* W0 v/ q- e7 m' E. |& a
. q- s$ S' M$ }8 Cclear-all-plots

+ {4 x; h- K3 ]' j1 r' _0 R+ r: b1 E/ }. D6 a
setup-plot1
) k( T' n+ Y. R+ P& }

5 E  s* ^! o3 u0 G1 p& fsetup-plot2
1 Q" V6 K% I, N1 k  s( F8 s: ~, t4 P

, h" K  |' `  I# Zsetup-plot3

9 h5 P& m( }7 v  k* {+ t1 _end
  l+ [9 {) W) {; N/ E3 z
  ^" @) y: O+ c0 a0 i;;run time procedures
7 n. A: C# a8 P/ L- `* }& Y
$ Q8 m5 k2 N1 O) D# Sto go. P) p. ]. a5 E0 W. |
& w# @- C( r( N& U) Q9 ?- K
ask turtles [do-business]
, _! a  ^% N9 z/ n4 D
end7 c0 p# d; [3 j/ i- z) F- o6 T
* x2 ]3 f8 i  C& O. S9 E3 `
to do-business # l7 @, u$ X, r4 `+ m3 l# T8 Q& W
) r" n( }+ ^; O

0 q# w& S" V8 `2 {1 H: @& O& frt random 360
7 i/ i, g- o) V6 C7 T  t

! Q4 h: r7 D1 }0 `: I. tfd 1

+ x3 Y+ {3 e1 r
; @" C, Z2 H, H0 e/ B! A* Yifelse(other turtles-here != nobody)[

+ t4 u' g! c% K4 s" k8 h( a6 B1 x9 E5 h1 e
set customer one-of other turtles-here

4 x2 @# f) D- Q& h0 R* r$ H
% ?9 p2 E3 G: x+ `4 Z  L1 g;; set [customer] of customer myself

& j$ @/ T4 V5 P8 E- q- I- a4 ]5 S' |7 ]) {4 M, P
set [trade-record-one] of self item (([who] of customer) - 1)
. j$ n5 v, `& b[trade-record-all]of self
8 h) g( w, p0 |4 ^$ |' R: K2 ~/ L: T;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
: b/ U& K' r6 P, p# ~, s) P2 v
( y  }6 n4 m! p. u
set [trade-record-one] of customer item (([who] of self) - 1)
" r( r# O5 `: q- d# f3 v[trade-record-all]of customer
' c  L: u/ `* r6 H5 o. [6 ]0 V  f5 S

0 t* F. B0 X& a& _set [trade-record-one-len] of self length [trade-record-one] of self

/ [. a8 T- t# C4 N+ b: Z9 Q% s
  F1 Z) r1 L0 Y2 Vset trade-record-current( list (timer) (random money-upper-limit))

( i. C: T8 D% ~+ e5 C9 e, g, O& g$ W& M, u
ask self [do-trust]7 ?, I+ v/ G2 s0 S& @! E4 M
;;
先求ij的信任度5 s: t2 H! N. D9 C

+ Z/ A' J3 ^$ \( P) sif ([trust-ok] of self)
3 ^9 w6 Q( X8 S- z8 ]- F) {;;
根据ij的信任度来决定是否与j进行交易[
% x* M* q( Z/ ~6 j% d$ Y1 fask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself% h7 `* O% w- D$ E/ c
3 r0 `, Y4 G) N+ ^/ G
[

- K: ]: v4 X. e( m6 z$ o# p2 r
' k' B0 Q  @3 hdo-trade
) w8 T1 e  Q- d* S4 s
/ P, b* e& B8 b2 p
update-credibility-ijl
5 W& a+ C" f7 A7 F( z

6 y6 X" ~; K; |" dupdate-credibility-list
" K- x* S" @# Z$ E" {( B

6 e0 c* B! A# f9 F
/ r1 h; r3 K0 ?update-global-reputation-list
1 A' @, r/ \  s/ v5 Z* ]

# c  s5 c) z/ j2 m, t" M; ?+ `! w" Dpoll-class
2 @" n: ]9 R) d" |, v4 x" w9 T1 ~

% b% r# f- {) V# V. Iget-color
5 z) \3 n2 ^: ^+ t; B3 z( O

5 `8 u" v  R" ]2 ~) I: ]]]
& |& U& e+ w3 ?: p
/ [, b; g( @" r# n$ l;;
如果所得的信任度满足条件,则进行交易
( W; T8 T- Z, l" I0 s
0 \2 D- W) x0 o, }: U8 f[
& a2 k7 z  B# N4 Y

; A' _' o8 F# Q( ^. A& z! Wrt random 360

. ?' Z6 e; O5 h3 }
; C5 _9 K- J; [* e4 s8 Zfd 1
! C6 ~; r7 i6 r) n2 }
( @8 |. y4 f7 {. `
]
- x+ j8 t4 c7 U  j: [' o, ?0 I& s: ^
* q! y7 h( ?" G* b: N6 M
end
% g2 ?. l$ o2 O  Y. P3 |6 H" ~+ E4 |
2 x6 w" o6 u# U- v
to do-trust 7 L' i. @; ~: ~1 w2 }+ V% u# _
set trust-ok False8 ^, f/ P( U; {+ @
2 {3 o1 G$ x# E) P9 \, P9 m; v* N1 v
6 L( @: E+ s5 i; @) _
let max-trade-times 0
( q4 Z6 B" B0 L; gforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
8 }7 v) C- _6 B3 Z( t5 llet max-trade-money 09 g* c9 j2 p4 |  p9 q$ ~. S
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
! a1 `1 M# w6 v; @0 }, ?3 `5 Clet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# f# d+ u6 i' ?, P9 x5 F9 Q& M9 A6 `3 J# R) u% t5 r6 _3 ~
6 K  M: I2 X& N7 k+ |  I
get-global-proportion0 U' w) v& M0 [# F- ^7 n/ X* H
let trust-value6 m3 ^3 }& l5 c: a: q9 S8 G% X
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)

' _1 a& {( ~- h/ _. y* kif(trust-value > trade-trust-value)
$ H6 c* \. m0 g7 {[set trust-ok true]: A8 ?+ c' P% V+ @, o1 F
end2 C$ |' t0 s6 a0 b

9 X; b7 @/ s+ Nto get-global-proportion
: B( h7 g* s2 T; difelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)1 V6 D! Y( W& ]$ Q. F
[set global-proportion 0]  o! ^  ~3 e* k  q+ w
[let i 0; Y( M* r( q0 l  J0 c% B5 S
let sum-money 03 n2 R. J# \/ B: ?
while[ i < people]
9 D. J- \1 C  X3 a7 O[: ^+ k; v' V' r2 J/ V% X$ f7 t
if( length (item i- d/ G, F  z  L* Y3 u* }
[trade-record-all] of customer) > 3 )
& Y9 u8 T5 v* q$ o5 c3 `: `
[5 K8 ~0 h4 q+ {, T
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
* m: I; g0 y: n" r  E) R4 z]
/ b, G7 R1 X2 ?  N+ j$ s]
: D' I( N6 Y( Glet j 00 |4 ]8 ~8 g) k# x' |" q
let note 0
" w' _6 W2 g" f) d; z5 F) }while[ j < people]! i. j3 e1 N( L  Y" s  K
[! o, ?/ L6 \+ Z( N) |$ L
if( length (item i
6 ]) A$ U, B  j+ [% e[trade-record-all] of customer) > 3 )
# f! k* M, r* G7 u6 h" y
[* i) y' ^+ K, X! N; Y( ~' J
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)% [: ^, T4 A1 \+ r+ K1 p' B, O/ R
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
0 o4 H6 n7 Q% q" _4 N$ a; c* h; H[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]0 D: N7 L# m; r) P/ O9 h% T+ V
]2 L4 G: [6 p/ @5 ]* c, c
]
+ p" w3 U/ C& V# X, dset global-proportion note
7 ]5 P" L6 M9 J3 o]% a8 S" o* b) J6 q, w
end
3 s+ _0 `' s0 P( f+ q  v
4 O! e. v5 o9 l7 d; {- Qto do-trade
( D: e! Z! y" m( ]: n;;
这个过程实际上是给双方作出评价的过程$ \9 C% Q5 H3 P! K6 B
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( ?" t, P5 S" F; n% Y7 Hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
# B* u6 |$ a' k, e4 tset trade-record-current lput(timer) trade-record-current1 p1 p9 Q4 |+ Q# t% P) ]- {) v  k
;;
评价时间! V! B4 Q- {% h' j9 {0 o) d
ask myself [
' b3 r! z% d# O) u( g' n, Pupdate-local-reputation" z9 f0 V5 ^  L% V
set trade-record-current lput([local-reputation] of myself) trade-record-current
/ N: R. f  Y! D1 r! a]4 ~2 N; {  p; j9 `
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
' s$ V( V* M9 e2 f# N9 S9 B% @;;
将此次交易的记录加入到trade-record-one
- ^6 @0 n$ K& I4 \+ z3 \set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)0 P% Y3 Y9 B/ f% {$ u$ i8 V
let note (item 2 trade-record-current )3 k5 B1 t" u! T0 o! a- \1 E
set trade-record-current
" }& D$ x% s/ [(replace-item 2 trade-record-current (item 3 trade-record-current))

' D: q, q5 D3 {( [! A( g- `set trade-record-current( C* S1 x& e# o. X& A* g, T% D8 ^; E9 Y
(replace-item 3 trade-record-current note)
- L8 J0 Y& K* q, H" G! w- E" t8 j) J8 v; u% N) B0 x

2 ^" _# a' f5 U2 N! X, o* dask customer [
8 v5 ~# y7 D* Y) h5 x2 B& T0 x- hupdate-local-reputation# ]+ |5 T2 @8 T9 T1 N
set trade-record-current5 f  a) C; a/ a7 P" Z
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
, K' J1 z9 q1 Y  q; G6 _5 g
]
* O4 h- ~* W: U( {
" r5 f  l+ T, O! r( u* G

5 t5 {3 @4 g$ E! Q8 bset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
) l7 q+ s8 m8 W! G

" o: r$ [" R% jset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))( O$ S6 Z) g" K8 L) E
;;
将此次交易的记录加入到customertrade-record-all
( e9 C9 n  L/ I! aend* o4 g0 p3 k4 d4 G/ W- Y3 o

  ?2 d. R5 p) e. O* F4 C, eto update-local-reputation! M' i6 \, W/ L5 e, d
set [trade-record-one-len] of myself length [trade-record-one] of myself
! `/ ]  T# o  v2 R
: L0 x0 |  _" z) e
4 i7 Z& ?! M, w;;if [trade-record-one-len] of myself > 3
- d8 A" ?- D) i6 A
update-neighbor-total
3 l2 [- f: {( f- h+ @8 y( b;;
更新邻居节点的数目,在此进行
+ X4 I. r7 C2 A8 k( Dlet i 34 Z7 K" \9 M" q  M: k8 u) H1 t" e4 N! W
let sum-time 0
; }/ L8 G* p2 lwhile[i < [trade-record-one-len] of myself]6 u: V; A  d0 k1 B, k, V
[! n; y& J1 Y1 O7 v7 k) }+ t/ B
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
1 w/ q* ?+ k9 p% zset i
+ t5 M; ?) B. n9 y( i + 1)
' |* ~5 y2 m8 \! v/ x; w% `
]
' x' v# I( j5 r2 a, B( @let j 3* G* b0 S4 ]1 q
let sum-money 0
$ N- {2 j& s0 G2 \while[j < [trade-record-one-len] of myself]$ m$ Z7 I! l4 p0 C
[
9 W; w' r; V2 N- a' q8 V3 _5 Aset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)% g" R4 y  K( l
set j
1 U2 t# B* U1 f5 |) G( j + 1)
% b/ _; U. g, y# ^3 b! i& c
]
2 d! S' s$ [) S) M  \let k 3
# Y1 T0 P0 B# S* slet power 0
0 S2 `& u0 O" r6 M1 a  s+ F5 {let local 0! ]1 D& H8 z" ~7 v( G6 g% t$ m
while [k <[trade-record-one-len] of myself]" e6 Q: p% O; d) p. y( X7 P6 {* p$ d
[- x, U' \. S2 ~1 K5 s4 e
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) # W6 [1 ~6 F, t* z) g3 z
set k (k + 1)
8 w$ U2 i2 K* {% Q& A9 B. _) n+ l]; D  |: k  s4 z; _
set [local-reputation] of myself (local)5 ^$ N% ~3 X& \& f7 j6 L
end) w7 ]: [3 t  y7 i6 E

  u, F# u8 {* M. U% d0 Qto update-neighbor-total
% k+ \9 f; J+ v  ^
( H( M% L$ Y( `* n. ?if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]5 [+ [/ o+ |. [7 m
9 p( K3 O0 k5 V2 I6 ^: x/ d
* G2 B: h' k0 x; w) ~6 A' B4 C
end" [" q+ `- H3 W( b& i1 ^7 L8 i

; t) W/ y+ @7 y' f0 ]3 }to update-credibility-ijl ( D* |% [8 E& e" X

: T0 K" V  \! k* B) t;;
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。
  X- O* {% Y6 ~# f3 W# Q9 ?0 N' vlet l 0
( V- A1 _5 L6 O& twhile[ l < people ]
  ~1 H1 y  {8 X% y;;
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8 y5 x  p" S* W  o4 l
[
3 r/ A* ]  M& i4 c6 qlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)0 k- \9 ?) ], g! M& X
if (trade-record-one-j-l-len > 3)- v/ M0 z3 @2 n; H& k& I
[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
1 P1 E' D  }, Q9 E/ plet i 3) N& u& M' b: y: W) K% T
let sum-time 0% |6 B) X4 l: f) e" `
while[i < trade-record-one-len]
9 H2 L7 A! L. X9 ?! B! {. r: Z[
  r$ g: M" G* t+ w2 {1 W" bset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
7 d5 U% k, j/ n" y( aset i; r2 }% y. s: T- i0 g  R$ m
( i + 1)
& Z/ [/ t$ n. ]1 z, {
]8 O" l/ [; q8 f8 c/ v
let credibility-i-j-l 0! |, m0 C" |. V
;;i
评价(jjl的评价)# ?% ~6 K, d9 v5 c+ H
let j 3, E* y+ M6 I* S0 a  s& i
let k 4
' E* p- J0 N; S" X( Z2 h9 _# Fwhile[j < trade-record-one-len]* E3 h$ g$ J& k; v
[  T, m9 Y/ U& ^3 s/ R$ G% Y  l& u
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
! J+ k7 {/ y- q5 c0 p# gset 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)
4 s3 ]) p6 B5 j* r% D: |) R) }. Gset j
$ @" x3 ^, d0 P, j; C( j + 1)
! W4 Q/ S0 W0 I& s
]
# O7 J8 R+ s* i8 Vset [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 ))5 y! o0 H# o5 y' V
3 L4 \% R* e7 s7 V1 A0 T! o

2 W2 g2 T1 J, K* q& Tlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))4 q$ o  F( }9 J. G
;;
及时更新il的评价质量的评价
) ]4 V$ ^8 }/ S* Aset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]* f5 c- @+ ~+ K
set l (l + 1)) M& F* [8 L, S1 s
]
# i0 Y, ~* c- a5 v! F9 i( M8 ~end
0 O0 T. ~1 C& x2 O- m/ X, K+ }. v, @: c3 ^) Y  A
to update-credibility-list
9 r. U7 {$ \& u, e7 U( [' elet i 0# P7 X3 j0 b7 J( q! m8 y% p9 e  `
while[i < people]
8 P/ [2 G" w/ |[, x% |  Y4 ]5 S/ }6 N" v
let j 0
5 H- ]+ C8 @1 a* Slet note 0
; X" s- C2 l) C# _4 t/ o! Nlet k 0# n$ J" x- E% F) ]0 _; C
;;
计作出过评价的邻居节点的数目  H$ |: _. b  k# B+ w4 B6 z0 n
while[j < people]6 o: x: v# M: [
[
: [' {9 v6 t; h1 ^% o5 B( z* C% vif (item j( [credibility] of turtle (i + 1)) != -1)
! D- U4 {* N! l2 s) E;;
判断是否给本turtle的评价质量做出过评价的节点0 f1 \. D  |0 J' W1 P
[set note (note + item j ([credibility]of turtle (i + 1)))# F0 N4 P# {- p
;;*(exp (-(people - 2)))/(people - 2))]
1 z) H! s" W: C& J
set k (k + 1)
- s& y* s% ~: s! y( q& ?]5 f5 R3 n$ F7 J3 Q
set j (j + 1)$ y+ k) p* B% l3 |  F
]  x6 v) d- B3 W+ L( X. C4 p# K' x: Z
set note (note *(exp (- (1 / k)))/ k)
1 e5 @, J) J3 Q0 f, t* w; nset credibility-list (replace-item i credibility-list note)
8 b8 @8 D) ^# I% ?/ A& Fset i (i + 1)
) j8 i3 a" k- o6 r# ^]2 j0 j: n! I7 K8 N8 t, X1 S
end
& M! S" C1 p/ [( C. m3 W' h  U" J3 `9 E- H' e, D; p
to update-global-reputation-list
; `2 w  g% ?* l) T( flet j 0- {/ R$ v2 b7 O, U5 C
while[j < people]8 ?8 D9 m3 x( l6 y# d) p! ?( }) a$ E
[
& P9 v" N( r" h7 k0 Slet new 0  k+ H; K2 _* M" T
;;
暂存新的一个全局声誉9 D6 s9 W8 m0 x0 S1 V; A) o
let i 0! Q  A4 g2 V4 ]
let sum-money 0
( ]" f( [6 @$ x. |1 blet credibility-money 04 o! y# ]* m% Y; t3 U2 p+ b* d
while [i < people]( y5 d8 F2 A* L
[
1 b& c7 k/ p) }# Sset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
' n7 D; w( z. R7 {, E; {set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
" _6 s" B) T' J3 Jset i (i + 1)
* @9 p' }, j0 H& @]' G5 y  Z, J# M2 E+ ]
let k 0
8 t6 L6 d+ B- `let new1 0$ p  u! A4 N) @! y2 c
while [k < people]
9 |. E1 @) H. b0 ?8 s* L0 c[
9 B9 k- r5 ^+ b. Hset 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)/ U: n% b* s2 V/ R/ F8 u( A
set k (k + 1)
7 o+ n* T3 T0 N: ~]. R) N9 y) ~" s
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
2 i0 b" H( M! W! t( gset global-reputation-list (replace-item j global-reputation-list new)& p- Q# S; v* F1 c# ]9 h0 W
set j (j + 1). E7 D0 }% C* d
]8 o# h5 y% j, v1 H$ H$ p+ i6 n
end% u* O0 u3 U* U  X

. a! j1 a' {5 @% `+ g7 |+ ^' ?4 Q
  s$ R0 Z. r2 u" Y9 B% i% g* r% q& K  n2 s
to get-color
' g$ u( s" S, f5 L5 W, F/ i; V$ k
set color blue
) L( X* y# v# ^: A4 s1 e4 S
end
7 k* _. V, ]( E! e# w7 c- O5 Q' |0 w( n5 Z
to poll-class
* W2 D/ F8 P: m" {+ v7 o0 ?- p& kend
0 E- f; i7 `: |$ v6 U/ r
4 N! Y6 ^2 ~$ O/ ?% Jto setup-plot1  E) c3 K/ v2 x! S

$ _$ [/ _" A# n9 N, fset-current-plot "Trends-of-Local-reputation"
8 w, C( ]+ \; @. b* n
2 @" A& e6 Z  @0 e4 y+ t
set-plot-x-range 0 xmax

  X3 l3 S. i7 y  u/ `) V# u
5 y/ S2 W5 S' [2 Y- nset-plot-y-range 0.0 ymax

0 U: q6 A) ~6 p5 B" `5 ^) g; v( send
' [6 ?- Q) h$ w- W  q( P- Q4 K4 v# L: W4 H( P7 r/ A8 U  Y
to setup-plot2
8 s$ L3 l2 C  I2 O9 T5 C
$ o5 c: W4 X$ d, B' c0 O% g( Zset-current-plot "Trends-of-global-reputation"
5 P* V: V8 B. ]
* I1 a. L4 @1 s- `) h; L
set-plot-x-range 0 xmax
4 ]7 t1 b! ^& J* h( p6 e

# ~$ {3 g8 f- [4 ^set-plot-y-range 0.0 ymax

6 y; t9 I5 E; v" x- Xend
  d2 U$ f, {$ f9 `- b# D+ }3 X# H# {. ?% m) j1 Q
to setup-plot3
0 B9 I0 r# \+ ?7 z. b; C: {
. c0 c$ N3 M. o6 z% ~( vset-current-plot "Trends-of-credibility"

% @) d8 o  A8 g+ u% u
, [! P* N2 }# F* W6 o' p' f) lset-plot-x-range 0 xmax
% ]1 G& \8 [. |3 Z; O' A8 N" Q

4 e# ^! T8 Z. i  S5 [- a9 S0 Q' }set-plot-y-range 0.0 ymax
# f; K5 T" @0 A
end
4 d2 Q9 I6 @2 Z. {
/ c5 t1 ?1 m" Ito do-plots9 @: f' F/ L; ~. j
set-current-plot "Trends-of-Local-reputation"" P. W/ b0 P; d" o. N
set-current-plot-pen "Honest service"
5 ?! J# U( y& z) p- e6 v6 iend/ g9 v  e" ~6 |. W( {& x
5 T- |4 V! T9 q$ m4 ^1 ^. ^5 @/ S
[ 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 z: O+ c& L/ u% ~( _3 y2 U  j9 o1 x+ h& U  G/ r
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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