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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 i/ k* d5 ?# }/ r$ g" sto do-business
) u8 R4 C0 v- W6 z* U+ z( ^2 n rt random 360- m4 r: a+ T/ H, E  ~& @4 c2 E
fd 1
9 L6 O8 @+ M" F. S9 N* } ifelse(other turtles-here != nobody)[
& [0 u" v- O0 W1 c4 \- ?   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 n9 T) ~& f# L3 X+ K   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    * R) L- J" x* E( V7 n/ h+ P; t
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer0 O/ J' l7 T7 X- S- b
   set [trade-record-one-len] of self length [trade-record-one] of self+ l6 R& b% s/ y8 x7 k# R8 F" v0 }
   set trade-record-current( list (timer) (random money-upper-limit))
) C$ W) n% X  m4 T& u
" E5 z9 g+ u' y问题的提示如下:$ }* e- P, @9 V- I* }& |( m

8 E. s+ }4 g9 K- gerror while turtle 50 running OF in procedure DO-BUSINESS0 J5 u0 B6 g5 c. L. @4 w9 i
  called by procedure GO" Q; s& }4 J2 I+ T* c. T
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
) h8 R$ c3 z6 j7 X! M# e* S
(halted running of go)4 H$ t1 S2 T& H% o
' K* g( w4 C' D; a% a$ y
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~~
: `9 H) n9 `1 K3 s1 w4 P/ w6 T3 k% [8 `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  p2 F# U3 w+ ~1 t
globals[
8 {6 E+ O- [7 i( G. O# Qxmax
. u  C7 W- E/ Q" a! ?. J' O: Jymax% O! z: ~' h" @( @
global-reputation-list
" Y: p* u' g# |
& W& h! o0 s$ o  h  E) n;;
每一个turtle的全局声誉都存在此LIST& B2 H& Q: A+ P6 V: Z+ r
credibility-list
4 {+ ?5 ~9 _( ~( I# ~1 E# j) x( `;;
每一个turtle的评价可信度5 {3 A8 p% y/ ^7 [
honest-service& I+ I+ v: G# T: M3 s& ]- D1 H: n; U
unhonest-service
( P: t* X9 k" X- }% U5 B7 Toscillation$ A. Q' ], ~" J
rand-dynamic, H$ C6 J. @) {8 J/ ]
]
9 H) ^9 z, h5 [! N  P
2 j$ Z4 w. p/ D/ n  V6 I5 o3 tturtles-own[) j/ x" B" @, z7 `# o" R' y
trade-record-all
4 ~+ C; E1 b0 i3 Z+ a5 J;;a list of lists,
trade-record-one组成
( q5 h2 e9 O$ ^' Ztrade-record-one
. Q, h8 _& t( ^1 }0 C;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录7 g* C, X" {3 ?6 c8 j0 |

1 c/ ^# i4 Y3 k4 [5 ]1 p0 e2 O;;[
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]]
: M% h) s: [! a! U1 xtrade-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]
" h: o1 a: b- ~3 I7 n" scredibility-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: F9 D7 }" m& W* E8 x6 d9 }) N
neighbor-total0 B' q6 F; V( a6 B; Z7 k" d
;;
记录该turtle的邻居节点的数目
7 a  s$ ^* c1 A8 ptrade-time
; v3 E3 q. k& X" K; D- x' Z;;
当前发生交易的turtle的交易时间
3 t; |' _& S( k5 ?, Iappraise-give
$ s# e. _9 k* `- |- A9 A- ^' }& r+ l0 K;;
当前发生交易时给出的评价
) j0 |4 q1 E! @0 nappraise-receive9 `+ F& |8 a% f0 `. l( w
;;
当前发生交易时收到的评价
6 c, q5 i  E6 J1 {$ `+ b" n; vappraise-time7 \. f2 E( J4 h5 g# x
;;
当前发生交易时的评价时间
% {' R! g# i( n* q. Blocal-reputation-now;;此次交易后相对于对方turtle的局部声誉2 z+ ~5 h8 j7 ~. e
trade-times-total& C( A& V& s5 N$ a% L* }$ [' k$ D
;;
与当前turtle的交易总次数3 U' r% }. i/ c3 U+ \+ M# ~
trade-money-total0 C. B) u8 d# H# a( ]3 M* W
;;
与当前turtle的交易总金额
! W- `3 b7 C; O4 `local-reputation
* i3 e- z+ s) a2 Zglobal-reputation1 C4 J3 g" E, `/ Y3 b' y' i& U
credibility
6 H8 y- E, @( R$ M;;
评价可信度,每次交易后都需要更新! E( H0 n" t" T2 c) C) A7 Y9 X$ V
credibility-all; k/ T2 U1 [0 L; N/ W4 b
;;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& }+ p+ F8 ]  l& Y) e

1 L! S$ \' z* N& Q2 [;;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
9 N7 n9 ?( |' l# h% J  Wcredibility-one
/ B( Q- t) s4 Z5 N( E1 P4 Y;;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
* Y3 O. }& G( p+ nglobal-proportion1 ]1 l7 z' m# Z9 V3 {5 F; D. U
customer/ z) L4 ~6 f( e- h+ N1 w* ~2 V2 M
customer-no
% u/ u! R/ i8 U' n. V. p* ltrust-ok
6 h- o' T- I; l" Q* Q/ f4 C* Ftrade-record-one-len;;trade-record-one的长度' L# ?- ]6 z+ H4 q3 N5 p- O
]+ h& y; R  y/ g
; N; U# ^' u3 D; E! I! f( s4 k1 P
;;setup procedure
7 |) K3 Q1 o$ R9 l' [+ S6 z# i% L$ i( b4 t
to setup9 x: P3 K" ~/ R0 Z% C& Q
$ p5 Q! Q! H# m4 l7 {2 X4 b- S
ca

# ]3 ]) R( F# f: p. w* }' v
6 l, `$ Z+ `, x1 Cinitialize-settings
' y' P* k5 N/ \1 H$ U3 H
/ X: N2 z. a8 C) _3 R2 c4 O: N( {
crt people [setup-turtles]

+ ]1 e1 I! q/ h6 I3 V, v
' `' t: w5 T% Z; v# [0 Creset-timer
/ J, a7 N6 p2 P' k
; p/ I2 k2 R$ b8 R9 @
poll-class

: ?8 \/ f1 h0 ]3 v( W* {) F0 q0 K5 t: M$ N6 y
setup-plots

" |3 j, g( }! @7 W; v( y
! d8 O5 i$ e& Edo-plots
0 v/ Z; I0 D) _: D& `* Z; L
end
; |2 s0 W, t$ E# b2 F
( [0 [' s% h( r$ Ato initialize-settings
2 F! h* r, t  ~2 p- ], i7 w: a) t3 r  E1 ~
set global-reputation-list []

) h4 R# }7 @% n, A% @- f
3 v# J6 }- S; Z/ Oset credibility-list n-values people [0.5]
6 j. b. @0 }2 Q7 x7 T, P
; i5 o) g1 q/ W# q7 W$ X
set honest-service 0
- y* K  X5 ~6 b! x( r% a2 T

3 N5 T# K2 y" D' n$ f6 P0 qset unhonest-service 0

6 }, `% w# \% u4 ^5 Q) ?4 J" Z" Q1 a% S) q2 O( w" m
set oscillation 0

3 _7 [) I; i; R6 d* d" [- T  |5 r. p7 n% @7 a/ d
set rand-dynamic 0

" o+ V1 J  ^7 u4 nend9 M( l' K/ t" P" y0 D: j
2 x/ @# c# w" I8 n6 q
to setup-turtles ' W# _# l: y- \4 O
set shape "person"' h% m( [  h5 x$ r  Z
setxy random-xcor random-ycor
5 p1 }& l+ u& s* N* s4 m$ c, M! n8 Kset trade-record-one []
+ R, q0 w4 G% ~% p

3 C! K8 Q) I$ X. I( u" s1 ?set trade-record-all n-values people [(list (? + 1) 0 0)]
2 r8 x' w5 X6 P9 M4 R# h! \8 D& f# K

& V" S- z. M9 ~- {set trade-record-current []
3 u) \) b7 Y6 m; |# P+ |# Mset credibility-receive []
$ I, E" O3 X5 |/ t4 e5 T% f3 P- _4 x' Qset local-reputation 0.5
2 K9 g; i& k8 h9 A7 s3 gset neighbor-total 0
" w( r% d9 d: S8 r( N$ `( [set trade-times-total 0
$ x1 p5 y6 E5 V: hset trade-money-total 0
& R4 ~6 G5 J- E" Nset customer nobody
0 z5 V! m" s; h( w7 E, a+ `set credibility-all n-values people [creat-credibility], n* x* _; z. j5 s
set credibility n-values people [-1]
( p  F6 p7 B. I, D  p% J. L- @get-color
& \5 j  J& ^2 r' A
( Q+ X  u4 \: |5 a, P6 E2 B
end1 |! Z  V8 O4 g- Y& M
" T+ d- M: [0 a) @* A
to-report creat-credibility
0 |- E. g: n3 }- \9 Y2 C& t2 Nreport n-values people [0.5]+ U& J4 q; S- m% [: S$ o
end! U5 Q% A0 V4 m, g5 w* H0 U
" w$ a0 M4 Y3 Y# I4 w
to setup-plots
! p3 f2 |0 H) R  _: a' t
( J+ W2 z+ L5 n4 ^6 bset xmax 30

/ ^" x* r" U; D6 l: Z* G$ O6 w' e$ {+ S5 h
set ymax 1.0
5 g2 p% B5 J9 P# C9 O( d, Z

, R: @7 P2 t; t" J4 ~clear-all-plots
: y* Y3 W( H1 |
' o" p0 J, q; q" _
setup-plot1

7 U$ b+ s% @* q9 ?5 C1 C( Y* r5 w$ V% W+ i4 j* V, }$ a
setup-plot2

" H+ J0 R/ x( ^3 `: S; {9 h
  n6 B4 h8 \  N5 Jsetup-plot3
/ B" @+ n: b- E5 a" r1 E3 b. }
end' E6 l2 j+ L: }; M4 e! ~0 R! W0 o
- d; D8 {# j2 r. |3 K: q3 y
;;run time procedures. V% y" u% z8 H: }' K

6 v% ]( E: C& C# R! ]to go- R: F" q4 _& I# w

) B" I; }+ C* r3 y5 b" Nask turtles [do-business]
) m6 d0 U9 {' j) C( j* ~
end
- g2 \9 B* Q1 f
+ v1 b8 v; n8 U, R; vto do-business
$ P4 l+ k. t& ^4 r* O" R7 p  O

* t( K! Q6 r7 @6 w' h4 l* a) v
# t7 d) T0 W. m6 g, o& Rrt random 360
2 `& ?5 y  c( g& N- L

6 I- T9 T2 }! Hfd 1

" P3 U, M6 x! b+ o* y2 ]4 t# o0 J, g( Q' ^. h
ifelse(other turtles-here != nobody)[

6 C6 e! H3 T% ]: g
' x: Y. F% F3 g  b- Cset customer one-of other turtles-here

, ?' A+ i" b- l1 Z* U( x8 K$ S# o
;; set [customer] of customer myself
$ A. G# c. |) E& r6 K; J! k

6 {- [1 O, I5 _( [set [trade-record-one] of self item (([who] of customer) - 1). }7 D) ^8 I# Y9 }" {' N. g
[trade-record-all]of self
7 t/ _- G/ K+ e+ l7 A* L0 P; N;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
# G8 l% |) |5 I) a

5 X  b+ A* l- f; S) Dset [trade-record-one] of customer item (([who] of self) - 1)
( m8 T2 g: g0 n5 z. k. ?  @[trade-record-all]of customer
+ e/ J1 P5 j. i0 ~/ O& v

$ F' ]; F- x1 v$ z1 o9 X. J1 `set [trade-record-one-len] of self length [trade-record-one] of self

; p$ V" |; g1 w+ H  h  B2 L0 r
, K$ P6 O- K5 cset trade-record-current( list (timer) (random money-upper-limit))
2 |6 t1 n; M, X+ r
) _& t- C5 J  X, o& K9 P9 t
ask self [do-trust]. Y  S& S0 v# [: i1 X0 _. W( K
;;
先求ij的信任度
/ B! X- {: y( z( l4 }
- r+ K, F3 W. C! q; \3 x  \if ([trust-ok] of self)
1 |$ v  n9 [' c0 |$ c( b;;
根据ij的信任度来决定是否与j进行交易[
7 v; U- H! D# h% E1 F8 Bask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
) \0 R/ }$ _- E5 U6 |) M1 i1 b( z
[
, y' c( a. D2 `# X+ T) X1 |/ k
# h, ^+ P5 I! W: n
do-trade

4 ]# T+ c) J; q9 V' {! o9 O$ s! z( E5 \1 r5 O, ^5 K4 l8 Z# g
update-credibility-ijl

9 `( Z/ ?. t( f0 R3 F6 n# r+ i8 s; s: f( {- i
update-credibility-list' K& b( t0 h- u9 y% q7 b! n

7 H" u& T( A, i# ?, b) I5 `; c4 k
update-global-reputation-list

4 b; L# g8 l- x1 j3 H* ]8 w3 g. D/ Q6 U
poll-class
) [$ m) M. R' W& A
2 j+ W" O3 o- N$ C6 g- j+ X
get-color
  V; ]3 l! _  }- l6 z' O
" F; A7 \% m; ?8 v; d4 i
]]
9 Q5 h* k  M* O8 X! R4 J, ]/ {
0 v, u$ `' q+ y( m: q/ [;;
如果所得的信任度满足条件,则进行交易- [% a3 g9 V0 \' I$ X8 Z
8 E" I# ^1 [, J) ~6 e; a( }
[

% T" D2 E+ }5 b: Z- }2 F
% d+ i% U, S1 ~5 r( R! P4 w+ A' hrt random 360

% l6 K1 q# U/ d9 [; \0 D7 C' h& r# h: R4 f  G
fd 1

! F' s$ U3 E( T- R
. @# r+ c' c7 h6 W8 ~" u+ ~* Y]
2 w9 A' u* t  _$ z
; `6 d2 w; O* q! K3 v
end

' c' `$ u) L, M) d0 C
$ P) e, T% G2 B. dto do-trust - f0 l' D/ V% y
set trust-ok False! t. N9 N6 @/ T% a1 D+ M* ^2 v

8 h- o8 g5 r8 {% k
% _; }- Q; X7 t- n; s% `- ~" O
let max-trade-times 0  l6 J  W3 t% P& n/ {
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
5 b0 C) f6 G! X/ a9 d  slet max-trade-money 0: q' }  D: A9 j8 v0 p
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
7 H: c. d7 S, Xlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))+ P+ d! B: m8 O# m4 g7 M
( O# y; C2 h0 f: ^1 W8 g* H+ b, V5 P
8 U7 M! g+ A6 i) {
get-global-proportion
/ l* H& D9 D6 K8 K4 t) ~8 m9 b, nlet trust-value
7 X3 v& T+ v4 B! Y4 {) @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)
9 z5 M, G. d+ X7 I& \4 @$ ]
if(trust-value > trade-trust-value)( z+ R5 z6 Q! f8 x  U/ d) v  U2 b& K
[set trust-ok true]
4 H* r3 C# k! {( b4 |end
# |3 k' f# \1 k+ t) W' \
8 q4 x- q5 P8 j, B/ c9 F, m. |) nto get-global-proportion
; |, r) B+ F+ s  E# Pifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
9 f9 m9 B6 w0 r* r2 Y/ V[set global-proportion 0]! \7 b% `4 Z  x# v: S
[let i 04 V3 S( c) c6 q8 N( ~* D$ P! _# h
let sum-money 0
1 M3 d! o! z# z6 zwhile[ i < people]
8 i$ k. y. a5 d[
) Y  A& P& B8 P. O! O( N. y3 Tif( length (item i
+ D: g3 g1 m' z[trade-record-all] of customer) > 3 )
* f8 f$ j' z! h& s+ L. d
[
8 r0 P+ d' [- f: s& Tset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
" u/ a/ c! @0 S7 ]; H; n]
; Z6 @+ j) |+ B1 T# l]
: s5 E" W, a' V% R; Alet j 0/ f6 @% y  x: i: o8 k
let note 0+ e" K3 c) |) O( z2 W& s) n& t
while[ j < people]" `& S( Q  w- H1 `. A
[' f+ W% W" N3 S  u. t! C
if( length (item i/ i- B! H# a1 A
[trade-record-all] of customer) > 3 )
& |7 ?3 G6 p, P9 O4 p- i$ u
[
' t+ `/ l9 E# Qifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)+ O9 e+ g% m0 F1 z
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
: G, w9 E( C. B[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
/ G# ^, K1 s) ~3 k" n]' `; C' f2 c4 W8 {/ J
]
  \" B" B$ M8 Dset global-proportion note9 j" O4 a- L( K# N7 g+ D
]4 W( r! w' d; s  `: @* S2 l$ ^
end
: y4 W1 l' @7 f9 R% x
  p5 {2 ]( m: T# @/ F% Qto do-trade
" B, D% \3 c2 ?- ]% @  D. }8 g7 d;;
这个过程实际上是给双方作出评价的过程' J. H4 ?3 }9 z- ?
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价$ Q9 O7 X* S7 m5 Y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价& o8 X! o  W( q$ L2 t; l1 u1 k
set trade-record-current lput(timer) trade-record-current+ I: c& a' q  A- N% q
;;
评价时间5 r7 U7 O" I, C' k& I3 i
ask myself [
' D. I( V6 m- I  R" n7 mupdate-local-reputation8 c; U& b. N' t1 A1 G
set trade-record-current lput([local-reputation] of myself) trade-record-current( e6 R2 {3 K# J8 P% m
]
6 Z# k9 u, E. W3 |4 [$ Sset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself& F$ ~  I0 r8 P& c
;;
将此次交易的记录加入到trade-record-one# A+ ^! q5 Y" J& s# c
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)" }" M7 Y, N# G, o. L+ b) Q
let note (item 2 trade-record-current )1 K3 g! U4 ]4 r3 z) I- U) T
set trade-record-current
2 x/ B6 B  t6 V$ [(replace-item 2 trade-record-current (item 3 trade-record-current))

7 q4 M7 j2 c* W+ [5 I1 [set trade-record-current0 N, J3 t; q' u& _1 t
(replace-item 3 trade-record-current note)2 a  R) @" ?7 n+ \; X

% a3 l& T. I/ l
% v% }  e4 _" K
ask customer [2 Q( t! p# Q+ K5 `: [4 b
update-local-reputation6 R6 C1 W) ]% q; G
set trade-record-current
% i3 j6 L  I$ b) z(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

2 {5 ]* z+ `3 L. a( N$ d. g  y]
/ _* N! w# @4 j) j5 S- h9 Y8 T, [8 l7 g  g7 H9 b# h1 o- q( {+ B
' Q, ~) j6 O# l5 n" D& W4 h
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer9 v4 m, d  x5 A# e; _. I1 Z% d

: G1 G( B/ @# {set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))" Z! R# }; C/ U& y
;;
将此次交易的记录加入到customertrade-record-all
! r1 v; }5 f1 h- P+ ?end, ^( ~" w2 U4 U$ }
+ H5 v2 Z+ n/ B/ p- s
to update-local-reputation
: V; _! D1 s7 D% A2 Vset [trade-record-one-len] of myself length [trade-record-one] of myself
0 m  j9 Z5 ?& y- ]# s+ c+ _* `0 T" y0 M) r, h( B6 Z
4 E5 i4 D: m! n7 Z
;;if [trade-record-one-len] of myself > 3

4 N, O7 ^, j* [$ Jupdate-neighbor-total
3 g" V- I( S* F- {8 p) x;;
更新邻居节点的数目,在此进行
& [! q6 n4 z% p% O" a9 Zlet i 3' {& A& D" O9 O! j* q. i) v
let sum-time 0
+ C9 B5 ~( x5 twhile[i < [trade-record-one-len] of myself]
' e: F5 D5 N5 G* P- ~% y$ s$ r/ D[( L) w6 T" f' l/ I+ y0 q
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
% [, e4 F$ t5 N* k' m$ t1 aset i3 ^6 v$ |- `" ?2 g8 C2 m' m
( i + 1)

6 X1 W9 Y, _) }2 W]
" I8 G7 z7 K& `/ Z: W" k3 S8 Ulet j 3  W, u4 N( e8 ?  q# }, ]# l
let sum-money 0
8 N( K* A- e( H( f8 J2 f6 Fwhile[j < [trade-record-one-len] of myself]  W( C% X' e" S
[8 c: |; D0 [3 K1 ~. _# U9 w
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)% H) J  P2 `# f  A
set j
5 J( @( E, M$ g$ R8 L4 i( j + 1)

; x  D0 G5 c: z9 l1 x* e5 s]& c/ @/ u" g0 G- j3 J+ l
let k 3
1 d$ d- g" B6 K5 k! ?- G+ N" }let power 0# t/ P9 E8 k4 @) c6 P2 p+ H% Z
let local 0
6 `/ q$ q3 X. i/ U  R# j  ewhile [k <[trade-record-one-len] of myself]
0 k% E% A1 O3 J+ W4 A) u% K, h[9 r6 s$ V" K/ H
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)
0 i5 K0 g. B6 V/ I# S. Qset k (k + 1)$ k! ~' f7 T) E0 z3 I* L
]
; f, B+ `' y' ]- rset [local-reputation] of myself (local)* f+ V0 }! V  w; I
end/ j' q% G: G' H+ @3 k( K; s
6 I5 C( Q9 K* O- U" E6 a
to update-neighbor-total
/ r, Q! m0 E9 t" ~% ~7 ^: j3 N1 q) k7 \5 ?9 T! a' a# \
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]' ]0 T. u5 H6 n% U! G! ^  }+ o
* ]: q4 g: R: ~
6 l  P; x  T0 M) K5 Z$ C. f
end+ N$ t1 N+ Z, }$ m3 E. t. n* Y( L
9 e  Q  B& N8 Z- I# `% H2 `
to update-credibility-ijl 3 ^$ I6 S" E+ ~! [

9 ?# x4 {/ g' Q' `, L;;
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。
) n/ w$ h1 g4 y& [2 K; \& k9 n4 jlet l 0
0 ~# v% T9 X3 V' |  _! }  gwhile[ l < people ]1 P& U: E, ~$ e0 H0 }1 o
;;
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) D/ P0 h1 _; ^( e( I. B
[
9 S5 ?% o$ @2 e; M+ Jlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
. m' p+ ^; d3 j( Vif (trade-record-one-j-l-len > 3)
3 t9 a; l! q+ z* _[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one5 |6 R2 b1 {; D# ?) K
let i 3; p/ G2 u+ J6 {% ~, ]. d" ~
let sum-time 04 K2 z; P, ~! T% Q4 B( n
while[i < trade-record-one-len]1 z% `1 t! s3 X) V
[
) {3 r* S9 U& G" w5 A8 kset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
  s; g9 U' t! ]% d! X, E7 ^1 bset i' m: M( j' u- {9 o
( i + 1)
6 d& |# R: ]& j. b' s
]
8 l7 J+ x# x8 x7 O0 ]& X+ clet credibility-i-j-l 0
' p  }# q& j+ f  ?;;i
评价(jjl的评价)( ~; L6 N# U- x; i* P
let j 3! C, T$ {! @' C/ V. u
let k 45 l+ B8 G% P1 }) y) h# N
while[j < trade-record-one-len]* y* t% d$ w! f3 P/ m
[6 @. m; w) |0 V
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
: _  z9 j  T. o' \4 L0 ^( \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)0 T0 m* }# Y1 b; G
set j
' m" Q# P0 p' _0 k7 r( j + 1)

  _" D, V: D6 b8 C# z]/ A6 ~: k, w/ {5 Y1 M6 j" L
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))% D( ^. [3 _* f8 ]
7 R; b& S8 q/ u: o0 V) n

, U7 M  I! y0 V* Q9 t9 Olet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))) L& o% G* h! U/ b  U7 V( m
;;
及时更新il的评价质量的评价8 f4 p4 ?& J" F7 s, i6 Y
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
/ p; i) s- k$ [5 O8 N1 A/ D& o* {set l (l + 1)& g. F6 j  z7 ?3 _) r: S' |/ k0 p
]% Y$ i* e% u9 J- ?
end
8 @- B. Y5 b, T2 ~
4 }" P. k, N, q4 Gto update-credibility-list
( T( U& j2 o! v3 }/ X3 xlet i 0) l/ s) }4 M% I# j7 Z, _
while[i < people]
" A# S0 E3 X$ d) L+ k[  U; \4 C2 Q2 ]; y0 c2 [
let j 0
) |! i3 _$ ~: r2 C1 ?( dlet note 0" g& n$ R( X3 W* M( P
let k 0+ r# P  `' R* c* L3 V% K2 Q
;;
计作出过评价的邻居节点的数目
( M  t, K8 U+ S5 c9 m+ Cwhile[j < people]
3 u: h, L% ~, v" w7 j[% J; J3 ^6 |! |$ G. J
if (item j( [credibility] of turtle (i + 1)) != -1)
& P5 l4 d" w4 _' @$ [4 |  a( c;;
判断是否给本turtle的评价质量做出过评价的节点
9 u* O9 S! T& ?9 M. j4 E! @2 K[set note (note + item j ([credibility]of turtle (i + 1)))
8 B  S) N, S8 ~2 x;;*(exp (-(people - 2)))/(people - 2))]

" m1 Q1 K" O9 d+ xset k (k + 1)
4 K! j$ d# U+ S) y- a  B]; H( f" L) P( C: W( t' k
set j (j + 1)) Q$ ^) C0 P+ A1 o& Z5 c, m
]
$ {) A# D( u9 M) c2 w6 rset note (note *(exp (- (1 / k)))/ k)
8 d" [4 U  k0 S3 |( }9 kset credibility-list (replace-item i credibility-list note)+ G8 a& u% @1 e8 o1 R& p
set i (i + 1)
0 b* [* `) H/ y1 M% q' x]5 I' r) N- J& P, W& g$ Z
end
4 X/ c! N  \  r9 Q& n* u
/ e# _6 X) L* d& \) w' I; x, Wto update-global-reputation-list' Q& P* ?. m1 J' X, f" C# j2 D# @
let j 0' M- }# c; {9 A
while[j < people]( O! N' z/ P% V' I! R# p/ v4 O
[+ N+ u& n8 r  b# {+ G
let new 0- C$ t8 A8 p, S) v  F
;;
暂存新的一个全局声誉
. r  `- z6 r3 f0 w' Clet i 08 j" e0 T& n* E9 p+ w4 D
let sum-money 0* W% }  L. z4 _& v4 v
let credibility-money 08 b0 o. d' `% s. s: e6 [
while [i < people]
# f# d) z" D, }[/ S6 ?/ U2 U' [" A6 p6 X
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
9 x" ~2 t0 s; ?- {3 r1 L* Vset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))2 g6 `9 L2 ~$ q
set i (i + 1)
) T, v3 z8 R, R9 E]3 r; b* v/ a5 F4 d) E" r
let k 0
- @( _8 M8 E& x8 Tlet new1 0
( U2 y! u7 g9 P2 pwhile [k < people]
( f% i1 B0 n! T, l[0 }4 H' n0 P  e. O% ?
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)
4 B% P% Y& u2 ?set k (k + 1)4 h/ |& }; e* a9 p/ Q7 R
]# C1 w& x, \" X. P" u+ }. w
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 5 B+ E- C6 z& y% o
set global-reputation-list (replace-item j global-reputation-list new)$ o5 K* S; Y- X) V. f/ f1 Z$ e
set j (j + 1): q& m% l. S9 x5 j: a# i2 S9 }& d
]4 s1 A5 d8 K: ^/ H" N
end8 m8 ]! c, l3 g3 R  ]

/ z6 l0 q' L. R- o+ H9 {; }3 e, Y: c% _% K& C$ x

8 H% _% U& v# t6 e. U0 n9 O+ Mto get-color
& p# E' r& n& A. k8 @3 H5 b5 }
) a3 x/ ?; C. S2 y" h8 G  ?- Aset color blue
+ m* r& B0 H- X9 b3 j" n
end
$ C* b8 [% G! \3 n) o+ M; L* ~2 Q; m; g% Q2 o. a
to poll-class0 B2 l. i  x. e1 ?$ f
end, L! Q9 u! ]/ }. p( w

7 v6 `) T6 @9 g0 {2 Rto setup-plot1
! J! t1 |  k, f' ~/ `3 {) a% z- O/ N  j- j% j" l+ M
set-current-plot "Trends-of-Local-reputation"
, k& j5 A. e  s4 B6 `4 n# H
1 L: [+ e- T$ X* E0 s7 ?
set-plot-x-range 0 xmax

( P$ G0 W' D; i( ]- Z, }
+ H+ D) D1 n, U5 X- jset-plot-y-range 0.0 ymax
- n7 ?) J  I7 ~$ A1 A0 {8 k/ m1 z' D
end
! Q6 Q  g8 W' m3 H
' m8 D2 N! F  i& Eto setup-plot2" _3 S, j$ z' G! p3 g! k

8 g) F8 z- ^6 J" Iset-current-plot "Trends-of-global-reputation"
$ p1 K: f; e0 h& O/ u/ [, \- d. f+ O

$ y# Z* b3 k& h# ^5 g- B& O0 J& Sset-plot-x-range 0 xmax

7 G* g) R2 n6 N8 w+ D5 f  c- A- x0 a" j) P. l0 [
set-plot-y-range 0.0 ymax
; f. `$ a8 V+ \( L6 C6 N% v6 I* L
end
3 b) P4 ]' n: c0 c$ {6 [% z
9 r, i  E( T4 Wto setup-plot3
) t; D+ J; }% d9 _: g" p: ~# h7 G  e, n% M  s
set-current-plot "Trends-of-credibility"
5 u* e  k" p4 q9 g+ w

+ z3 u: h4 M6 F* ~( E0 Uset-plot-x-range 0 xmax

4 e5 P) r' v; T  N6 j* d& x0 [; \) m8 T9 R1 N" R* o' [
set-plot-y-range 0.0 ymax

. W8 @9 b% v1 O' c7 l9 ~+ Xend8 G& t1 z) N" J+ F$ ^/ u8 z

% B& [7 H! e, {5 {1 q' E! @$ h, L% G7 dto do-plots
3 f" e; Z+ K- A6 kset-current-plot "Trends-of-Local-reputation"
1 ?7 M9 \) f7 {3 J1 {7 tset-current-plot-pen "Honest service"
7 }: \  D' j/ k! L2 ^) m  B- m+ q5 o0 L* vend
* p/ v& z% B# P, ^: C9 D
5 n8 G9 X! q. m. ?8 s3 ][ 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.  ]+ K- ^, \- H% i% R& m
4 B" v  W) N5 U- F: `/ ?1 A# 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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