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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:1 F. D. m% |" U# ]) \- @$ T4 y! T
to do-business 1 [* ~; w3 P% w5 P/ {4 j
rt random 3601 y, }, m( {& s- s* C! L5 M+ ^- Y3 }
fd 1
+ J6 |5 e, S( \% x6 }% h ifelse(other turtles-here != nobody)[
: C5 {& o! e7 J" w# V9 t% b6 D   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.4 c) Q" \9 S0 l7 l7 u
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    - q" b3 `1 c+ w7 c' R3 K# F, F4 h
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer! g6 y& _+ B  Q
   set [trade-record-one-len] of self length [trade-record-one] of self
  `  f  y1 p: T( S   set trade-record-current( list (timer) (random money-upper-limit))1 T7 @2 r2 U9 H' c0 i, W( W
8 H" g/ Y+ j. l8 V( s3 V
问题的提示如下:: T4 u7 |! N( J* n" U
5 u$ y6 l) O- k) n# O
error while turtle 50 running OF in procedure DO-BUSINESS9 R0 x6 v3 S3 f( u/ y: @, [
  called by procedure GO
7 u) C2 T' o, `2 Q, KOF expected input to be a turtle agentset or turtle but got NOBODY instead.
% h& r8 U# R+ Z5 F# n8 B& h1 W
(halted running of go)
9 U( C- m" ^" O* T. P9 Z* x" U* v3 ~- h; E
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~: g( {3 V- w8 r+ k# F# i" w
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0 g& T7 \/ @. f
globals[) Z4 ^; }$ }  X7 J8 }7 X
xmax
4 Z' H, f9 P  G1 ?8 g2 W: yymax
4 e; s% _' K/ D3 Nglobal-reputation-list: x  ?0 s0 x. B2 ^  D
0 N) T' f0 }( |/ |' @5 D
;;
每一个turtle的全局声誉都存在此LIST
  J2 G/ V/ x5 }; P% k1 h0 W' ~credibility-list
2 n( `+ H( t: T/ X9 t( O;;
每一个turtle的评价可信度. Y  ]& t- B, K- D4 U6 G2 m
honest-service
( @/ h  s0 Y3 r7 Cunhonest-service. L0 [$ n6 ]7 @& ~
oscillation
: v; C1 @- O7 Wrand-dynamic
- Y  r( m- F; z/ l" s' j- l8 k]
2 u0 Z1 s2 I) S% l! ?/ n3 W/ C# b
+ O" E: A- ^2 N7 }) Oturtles-own[9 G6 y- L+ T# r" ?
trade-record-all& T. |# L" n4 w3 W4 W
;;a list of lists,
trade-record-one组成
% u: s4 p9 C6 ~trade-record-one1 m' l: ^1 |8 B  [
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
9 u* m5 T6 A- E8 d9 C* ?+ z1 w- R. I  Z/ p. J1 w. ^
;;[
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]]
7 t6 H3 l6 z1 Z  b1 M! J* Wtrade-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]& ~) s! S) _( l  [
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list7 x6 r; q9 L/ e$ ^* Q9 @
neighbor-total7 l8 ^* p9 [" }; r. \
;;
记录该turtle的邻居节点的数目
' O! h, u1 R" n1 ?- s6 Ytrade-time
. @0 u+ ?% I, k1 F;;
当前发生交易的turtle的交易时间# ]& n0 x* v$ z- {
appraise-give
) n/ P, L  m: V2 d! S* P;;
当前发生交易时给出的评价
7 p: z, S2 P" h* T' t* dappraise-receive/ ?3 h6 }; B3 ?
;;
当前发生交易时收到的评价
$ c1 s! g( J. D+ @. a) [) ^appraise-time
  I, T4 @% C# F( W0 k& t1 i;;
当前发生交易时的评价时间
3 _, v! i6 S7 e6 p0 Clocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
+ N6 t" x4 P, l; V( p7 s6 x$ gtrade-times-total5 ^2 n1 M1 a! l6 {
;;
与当前turtle的交易总次数( a, L* H) f; e, f1 Q
trade-money-total
. A* d! G# ~# \$ L+ H, H# J;;
与当前turtle的交易总金额8 O. @& H, X+ y
local-reputation
4 H* F9 ]- O" Y1 e; r  Y- l3 v6 _global-reputation
& g8 _6 L& v+ ^5 Scredibility$ f: ]2 c0 f6 ?% K0 @4 ?
;;
评价可信度,每次交易后都需要更新
! `: p( J! t- s* b* h% {6 Zcredibility-all' Z( \3 N. X/ i0 T9 l, f' I; `9 m
;;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$ B7 j, Y) N, v

& }5 {5 M: J0 W4 F2 G% a: f;;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
  N% ?' m5 h. R: N1 W( bcredibility-one
* @' u' V) o+ ~;;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
: S- j; k. i- E: R1 ^5 U& Q2 nglobal-proportion
6 H3 ^/ x; ~& `0 O. g. H  Q; g, Bcustomer/ T1 r* o! U7 c! A
customer-no
0 z7 h; f/ L( r  t7 a; x% [trust-ok
4 J# J8 ?: [: s  ptrade-record-one-len;;trade-record-one的长度
6 F7 i! z- `% o: U7 I]
5 G7 [4 ~6 a! x, [- M. y
! E3 p6 S4 ?% q1 ]) T2 m. \;;setup procedure
) M& [4 x+ Q  S8 h7 ]: |3 k, z, X: m' Z5 G/ [
to setup0 u9 ?! G" P' @7 w& z# G' d

) t/ D& Z+ p5 Z7 z: n  Vca

# b, }8 U. e/ L
, T6 _' b8 x8 L  f, {2 n9 ?initialize-settings

7 L6 z+ k! a! r: A, S+ G( R8 j+ G# V$ J& `/ R
crt people [setup-turtles]
2 [8 J5 D- v1 X  h" _; a6 @% ~1 Q4 t

6 ], J2 ?, h( Nreset-timer

% _1 a  @" A4 b: p; J* b6 @
. X' B: ]/ D' K: G7 u- y' epoll-class
0 b6 `9 b- _  D; z
0 z; X# a# J/ c3 G+ l
setup-plots
0 f5 s+ |5 L8 A$ r) r9 l+ x7 E

% h  n2 R! A8 o# r# U* t# q2 odo-plots
+ {7 n0 V: V0 {8 j( s& P
end+ z8 B: e. l) s& e& D0 F+ n
- j7 ]7 A) K- c
to initialize-settings( _, s) u4 X' v4 v  S5 j) k

. ?; Y9 R7 d8 Q, e& s: X; Aset global-reputation-list []
. S  J+ a) t# P6 p2 T: x

1 {5 f1 h3 ]5 _5 R$ Z* P* h# mset credibility-list n-values people [0.5]
# Y9 F! K% c1 R1 ?9 ]; [

3 u# p! h% a7 U7 lset honest-service 0

* i. j  T" K& V$ C# ?. w. X' Z  h) ?( d
set unhonest-service 0
) L5 F2 T9 x3 U- ?6 y1 U

4 G/ Z  g7 c4 N4 v- `" j1 {set oscillation 0
( V- e+ i# L9 {9 u/ C
( T) @' ?# y5 R5 j1 C1 _9 v
set rand-dynamic 0

* `  ^6 ^+ q/ I' B" Wend
8 m+ t; H* C" \; s+ ^( X& S! {3 r0 j, L( g* W
to setup-turtles / [. j5 i  x& l  `! y( L+ k
set shape "person"
* Y% Y" i1 p7 ?9 \( L8 Hsetxy random-xcor random-ycor0 T6 i. G6 P& r) f
set trade-record-one []
. N! t9 `4 x! W% ~- I" B$ Z5 \
$ H+ e; P$ j% ~: m- ~! _3 t
set trade-record-all n-values people [(list (? + 1) 0 0)]
3 k& L2 `! m% \! q! A- [

1 t0 m# O- Y. D+ P# ~  G0 W8 i0 J* O4 lset trade-record-current []/ X! T. ~/ ~9 Z& h
set credibility-receive []+ A# Y% q4 Z8 {. E
set local-reputation 0.5, T% G$ S5 p9 Q% Y
set neighbor-total 0: d( n2 n6 Y/ S0 x( z, M/ e! D
set trade-times-total 0+ _6 U: \8 r' h$ ]# z3 `
set trade-money-total 0
( F9 |+ _5 _9 K: L, b9 mset customer nobody
. {" {' S$ a8 D2 W/ R( rset credibility-all n-values people [creat-credibility]: _- o. I' L/ l7 G- R6 H
set credibility n-values people [-1]. n5 d/ m) m( G. ~0 q6 ~. ^
get-color8 ?7 X! j/ P  s) c+ o6 c; n  S' e( M

) c/ m9 Y) x4 f/ j: }& V5 qend
$ X$ g% k" t3 N
- A  N6 A! n. |to-report creat-credibility# }: O. V1 R1 u% i% |% K
report n-values people [0.5]
) E3 U& ?( E  a1 Q1 Vend0 f* S- S% m1 B) d

8 [" Q- J5 F! F- eto setup-plots% D3 W8 C; a& t& k& o
& O6 l' B4 U' }0 b1 p" |
set xmax 30
1 Y; N! E6 J; v

. Z6 {1 o5 ]+ {6 J  H- fset ymax 1.0

+ @3 Z( A% ~4 }  N9 ~% h9 G
- ?8 l# M! U5 w5 I& Xclear-all-plots

" b$ `) d6 c6 a
: ~  l  ?. i; D, C6 y$ Y# c; \! |9 }setup-plot1

% @1 V7 G+ x8 `4 K. {/ L" [" J% |1 O- ~0 d* t
setup-plot2

' \8 P) `1 P* w. m3 h# b0 P) _0 r2 \& f' z
setup-plot3

- E  N: W5 v- L3 F( v9 C1 r; jend
1 ?; m% t( z  }4 v* e. b" z( v, f/ R' ~5 X0 E" a
;;run time procedures
* v0 o! t& Q& w! M3 q. _) [+ K' M& F! m- y+ t
to go
' X6 b4 a9 i4 \; h0 }" F: L4 Y$ k* F3 o) R
ask turtles [do-business]

* i$ a, O1 E$ ~0 A/ d' M2 p$ ]! hend+ u$ a/ s9 f% X# j+ X
! b" v7 W+ w' m/ I: }1 V7 f
to do-business : q! C# A/ V5 r' f. \% v4 E# R

1 o0 j, `; `' i3 w$ E
) \9 j% v/ H$ jrt random 360

; @& V3 Z5 g$ g* B+ O
' z  Q/ @) M$ @9 Y0 Pfd 1

, r: E) X. g: Y' r' T0 u4 D$ Q: k) H5 s" G: H
ifelse(other turtles-here != nobody)[

9 t4 t- X4 \% E% x0 o
: q# T' }+ N- O$ q/ [/ e4 mset customer one-of other turtles-here
- N  f0 r0 F/ N1 [. ^. h

1 Q6 R0 t5 t$ @# x8 {0 I# P;; set [customer] of customer myself
4 w1 W+ M) P7 b: R% l
1 ]" ?3 x7 r, _) F) i  A
set [trade-record-one] of self item (([who] of customer) - 1)
6 U* G! e4 B' b, C% X[trade-record-all]of self
" [7 U$ j# m/ @3 _& a* e. B/ W1 v;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
5 T0 x" P" L7 p! x* u

3 p7 T! k. A7 r/ j6 Uset [trade-record-one] of customer item (([who] of self) - 1)) U( a- ^& }5 a# q
[trade-record-all]of customer
4 ~" s0 B0 H/ g* I6 K. A- a

/ l7 V# J9 @1 K% O; z+ p/ tset [trade-record-one-len] of self length [trade-record-one] of self

7 z+ c# f/ ?9 X) K9 m: i( T8 `0 d9 H' z7 c/ o
set trade-record-current( list (timer) (random money-upper-limit))

$ V6 V! M( h# z) m1 i
+ v  p& ~; W% G4 j/ s) ^( S# o1 x; Gask self [do-trust]
" a& c4 u, G- v  l" q% o;;
先求ij的信任度
0 Y9 s2 V2 k. ~( ~$ \+ J& b: \  L( F# w: D1 c. w1 @, h6 p
if ([trust-ok] of self)) m$ m: W" N5 b$ Y6 {  ~
;;
根据ij的信任度来决定是否与j进行交易[$ c% N( ?. q" f- R  Y
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself) N4 K& j  e# I# N0 y
' m" H: e& i* n# ]0 f( k$ Y6 x. A' x
[
) m4 s% m# ?( @; e% e

$ F/ K$ d# k/ _8 H+ Y4 ?( N( i4 E) Rdo-trade
1 Y: o/ `2 m- u# _, m1 e. O/ ^
" T- ^! o" A8 {
update-credibility-ijl

. X- @# \$ _5 x8 F! v
8 d( `/ a* ]3 l6 k8 @# h# Mupdate-credibility-list
. X2 e" v5 r) \2 i

/ O! [4 }" u+ v8 B) w' p$ W6 Z2 V/ E( c& K' |  I/ h
update-global-reputation-list

$ c  l2 a: k  ~; X3 A
3 l- P9 @; U, V, {: Kpoll-class

1 y% z* s* @  O. a1 d: B/ Q2 s- j- F) \0 _0 D; F5 L, ]
get-color

- Z" H5 W! ^' \+ n$ H* M& M
& v, o* S* V* }$ q" l]]
' D& I. u% o- ~; c! i8 M8 c% \+ E4 a+ Y7 V, N
;;
如果所得的信任度满足条件,则进行交易1 `# D7 p! o0 Y

6 B7 p8 W: j2 p$ H; k/ }[

7 q' I' R$ b+ @8 M9 A4 j3 Q0 h- h; b4 ~, l. X' A
rt random 360

. T2 j6 |2 ], b) B% M4 C- S4 a3 c0 J% u5 ]
fd 1

* Y: M# e, a& X+ d6 ~3 i% Z7 X
3 c* L3 O  s+ \; o7 d# p; }0 a# j]
0 R) X* H" C2 ~0 O& i1 a

! B2 p& e" q. Fend

8 |2 i. V! f4 a# j8 W  [6 i5 q" V) Z/ R8 W/ m* ]5 d8 g
to do-trust 5 F4 K2 ?4 @4 z" V  H! N; o
set trust-ok False' W: L* r4 o2 v( u2 B1 K
$ K' d" K- G- @% Q& N2 x* e
9 C; b* K, s. L6 J$ l6 m1 y
let max-trade-times 01 a/ @. E% n. t
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]4 K* P  q# Y) s7 U
let max-trade-money 0
1 U. n+ W1 B1 D/ Y, F  ?foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]3 ~- i1 U. w* t, H" D  U
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))" S7 ~- p* W( w& X: H/ K' \5 V% D

9 s, s$ Y  {4 q4 C1 D4 x

; j8 p, O9 X/ ]! ^: pget-global-proportion0 U' A2 b* t* H1 O, u% V# |0 {
let trust-value
$ @& n  S% d& x+ h$ ?& ?$ Flocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

; s* S  a* u+ o3 e# r/ K+ ?6 ~6 e4 Uif(trust-value > trade-trust-value)
; z% l4 J4 {& U1 n7 O# U% y[set trust-ok true]4 P& e7 [) J8 ~! ]
end
2 T1 p: N% [+ W( t4 G  x
+ i0 ]/ O% c) E8 x& {to get-global-proportion
2 [  W2 R8 ]( J' f1 Yifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)! \) I, |, T4 O
[set global-proportion 0]
0 K6 |2 ]! u) U5 A[let i 0
+ O4 n) \$ U# Y; s5 G/ X8 n1 \. F$ e: r# Nlet sum-money 02 }4 w& g" C* }! [8 R% D
while[ i < people]9 W  f" \4 ~# c+ U  s+ j, k
[
* i+ Z2 Q) Q+ J+ e3 F9 Kif( length (item i4 |4 h9 Z2 F1 B; T
[trade-record-all] of customer) > 3 )

: Z3 [! J) Y5 K( S6 l* [[
! ?0 a; P( R8 S6 [0 P4 qset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
) [. ?) n+ R. {& J* I0 i/ Y  }% S" k]. r& g+ P6 U* f0 U' o
]
% G1 j9 c# b6 p7 Qlet j 0, {2 z+ v+ L; O! B% _/ H. @
let note 0. q0 T: n$ V& o/ |! [" Q5 X% x
while[ j < people]
" j* x3 u6 \4 Y" G+ \/ B/ t2 X[
$ t! A7 W: G% ^- [if( length (item i* g% U3 ]0 W' p% ?; K2 U3 i, m
[trade-record-all] of customer) > 3 )

6 Z6 c2 k7 |/ Q[
9 F+ W' e& r$ O! |. z1 }ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)0 D  u1 |+ F( {
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
. X. p5 x5 c1 m7 o) `% A5 X3 Q[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]1 N3 ~* O" Z& W
]2 y  X- J* d. W9 k+ Z
]
! R/ {/ w' E  ?6 R, _# r' y) ^set global-proportion note
  U0 q9 a; q6 X7 C4 {# ~]
* |- |: s9 E  N+ p4 ?! f8 T: pend
- p, S) ?4 H# k6 d( y/ F/ [% m$ B9 a( I/ f9 J! h0 h0 c
to do-trade
8 _# w7 ~% j) ?8 k+ w* M;;
这个过程实际上是给双方作出评价的过程1 ?6 t, ]* Y. J& }0 O6 B
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
& m, l' a& a1 i3 p; L" v" z! x' Vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价; f5 k1 ~5 Y# f) Z" a6 J0 W
set trade-record-current lput(timer) trade-record-current
+ M' p# d! i2 s;;
评价时间
7 e+ e$ J7 N# m% uask myself [
+ D+ x- s4 @$ y5 Pupdate-local-reputation: x6 n: ]/ N0 X$ G, S
set trade-record-current lput([local-reputation] of myself) trade-record-current  C3 J, {2 U3 Y3 c# N/ t' y' z
]2 ?( x' [( A- s  s% q
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
6 B1 N* u6 U7 [* _( h;;
将此次交易的记录加入到trade-record-one" C7 K6 L( n! h
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)0 w6 t" f$ r& y  l8 x1 N
let note (item 2 trade-record-current )5 m4 `/ m. F- W6 x4 ]/ t
set trade-record-current: i/ i4 o- _0 i
(replace-item 2 trade-record-current (item 3 trade-record-current))
$ b! \4 R) i- d6 q+ E! ~
set trade-record-current# o$ [  L" M1 D4 B
(replace-item 3 trade-record-current note)% K- v; c- {! U5 u6 S. v& a+ z

6 g- n* F  V4 X# D1 J1 D
2 c& o9 o& E+ u
ask customer [2 }  _2 C8 m4 x, m9 u$ p; S) h
update-local-reputation/ q  T- z7 G% W) U7 T1 p2 o- E
set trade-record-current
1 S+ A, W$ H0 z: v(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
, ^2 r' v6 p4 U7 V& Z
]
: k( f7 r( U; Q# |, C- x) {+ O% n# s5 p3 ]& J3 i2 s0 `% i& W$ ^
8 t6 t; o  e6 ^" w) c
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer9 P" N5 x4 A' l; p. Q3 E( n

- Q0 c. g  d7 `# j! r% D. ]set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
* z6 u' ~) p+ C. r;;
将此次交易的记录加入到customertrade-record-all' `" }/ Q$ f" f$ k% }& `
end
  v& S/ d/ J; h- B
- j  u0 D5 v, [; l0 I$ ato update-local-reputation- |" a/ `# I+ T: c
set [trade-record-one-len] of myself length [trade-record-one] of myself
* n. ?! j* e' Y1 ?4 h# H; a! w2 p* g1 H4 j$ \2 {4 T' W( e

/ o* A  R+ J6 H& Q: |;;if [trade-record-one-len] of myself > 3

/ T; r" e+ R; `( Z, z6 ^. u1 O0 Bupdate-neighbor-total0 n, ?* R, H, J$ F
;;
更新邻居节点的数目,在此进行
. ~7 A9 o7 g8 o% [let i 35 [8 E! @8 b4 n9 L9 }& s% x
let sum-time 0
3 a1 {* k# W' f4 h& r  w/ `8 Vwhile[i < [trade-record-one-len] of myself]) B& ~8 N7 l  z' K9 ?
[8 N9 R2 z6 C2 u8 K8 x2 i' p
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )% X# ?+ C- O6 x* p: c
set i
& i; N% b" y2 P! b( i + 1)
0 i' L6 G  w9 u3 }* z
]% @' F, _* v0 a5 O' O" G0 W
let j 3% y, ^9 [5 c. v2 n
let sum-money 0
1 m' i5 ?/ p+ kwhile[j < [trade-record-one-len] of myself]
" J3 i, K% ^5 O[
! {& {4 ?* i; j; }, ]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)* r! E% p* G% W1 Z4 J- W& j
set j9 U9 \! d* @1 ^+ K
( j + 1)

7 G6 J/ V1 \3 m4 Y  X]
) `! n: r0 B; c6 s3 G4 Xlet k 3
6 d/ N* l0 A  p1 P7 Ylet power 0
& W8 A" t5 F# O5 |let local 0
1 [% v2 s) g- E3 I, y& a! [; swhile [k <[trade-record-one-len] of myself]/ \, r5 P8 `% \$ n( g0 [
[
+ T* a$ p4 N8 j0 m, Vset 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)
& o' Q1 }) B7 nset k (k + 1)
& S9 K9 d6 V5 x- s. x]
* U! j6 b4 J% s; Mset [local-reputation] of myself (local)2 _0 |, K3 r) U. P5 t
end
8 @- Y, ?- C: a4 r9 v. a& p! q3 I1 m7 H% h. m+ ~9 p: O# a7 V, ~* C
to update-neighbor-total
) b, W6 a, w) Y. {( N8 e  I
( [2 v3 B$ Z% Z  U2 v' g8 Yif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
$ F3 v! s. f4 C
3 i1 X$ Y4 m9 c2 I4 S6 I& v" S
# D6 \( e" }5 b/ c2 `4 P
end
( q7 `7 O+ `& P7 A: @0 x: Q# g9 w6 t5 D
to update-credibility-ijl
' x( i: _$ h3 @% `! E
+ E2 }% W& ~1 z) K! b/ }( I, k;;
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。
1 e6 S3 H8 C( J; Alet l 0
  i9 x" \7 x  r" w7 n/ N2 r6 d4 pwhile[ l < people ]
) a5 x, _+ s% J6 Y! G/ 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+ V6 @% U. c# @$ y9 G/ n: I) |9 J1 ^
[
- {  U$ `2 ^. M% Y% ^let trade-record-one-j-l-len length item l ([trade-record-all] of customer): I9 F5 G0 `, ~! x
if (trade-record-one-j-l-len > 3)
! c7 U/ j! |5 w2 L2 v" c2 Y[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
. X* V  V3 F. B3 ulet i 33 d  q  q- ]+ C' ~" r& I" B: T
let sum-time 01 b; d; }+ O4 T7 l( N) M
while[i < trade-record-one-len]
! X2 y% i( i2 s) Z9 p* k& y[2 X( o3 E% B4 R* n1 m! {' t
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )3 s9 T& S  N1 S5 `- X+ W3 ^
set i
& y( x3 m8 C8 t8 P- O: b; A( i + 1)

  H7 f* c- ?) d# L9 v  o+ d]( H; d  f( T/ c3 F4 h6 A; |) ?
let credibility-i-j-l 0
6 J) c( Z, W7 h2 y) n$ S$ D7 q;;i
评价(jjl的评价)
" B" P1 b  Z8 I2 w+ n9 n4 X6 M# xlet j 3
+ r" x4 Z# K! ^" p/ ~" ^5 \' f  I+ \3 Ylet k 4# E1 e% a4 ?& b7 a! T. H/ T" @
while[j < trade-record-one-len]
7 ~+ N0 O+ M# ?! k' a[: U4 V5 [$ x8 t) W  Z9 A* l
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/ E8 @8 Q6 \( s
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)% D) t% S5 P  B
set j% ~0 r) A9 f. Z2 A6 f. y
( j + 1)

3 S/ o4 z' m8 e1 b( i/ K]
/ N, K8 W7 x2 P$ Z1 ~; z' xset [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 X7 {. i/ l7 B2 l, _
) `* O/ O, Z; z: z5 d/ X& r6 @

& h. N' f5 m7 V8 V. N% ~let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))  A  H0 P& Z$ x* F
;;
及时更新il的评价质量的评价
6 a: O* @0 A% r6 q# ]  [" mset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
+ w7 f$ k' S/ n0 ^" \set l (l + 1)
5 ^  b) u9 Z2 r9 F6 T+ f]$ Y4 D. E3 T+ Z+ _; p6 J* b4 U
end/ b5 n! H6 h# z

' Q' @+ R* ?5 W4 k( t4 I2 v: x5 xto update-credibility-list
/ O. ]3 S7 L; F, e' V5 ]$ rlet i 0( h/ {9 z/ @) a  R# U9 V
while[i < people]
  Q& m8 L! V$ n! |& @. [  Q. d6 Y[5 }. z2 m! v; e
let j 0
; H) i1 p+ u9 Tlet note 0
- Y' K/ \( f7 |* blet k 0
5 B8 f9 k: {) m( B* s;;
计作出过评价的邻居节点的数目8 q+ b; O' d/ |$ r: W& p5 e
while[j < people]& j4 ~* p  ?% ]/ |, T. c& |
[* x+ Q9 \+ U( e; C: ^
if (item j( [credibility] of turtle (i + 1)) != -1)% k1 k5 a- |: v' j% u
;;
判断是否给本turtle的评价质量做出过评价的节点! z* z5 W# m" D1 O* m. l* Q
[set note (note + item j ([credibility]of turtle (i + 1))). U* F; R" }: h
;;*(exp (-(people - 2)))/(people - 2))]
8 g+ {% B" s9 y
set k (k + 1)2 }" e$ |$ V: Q- T5 }0 s' h
]
+ R- ?, U& L9 V2 Kset j (j + 1)! O3 a9 P* @- `9 e- T; ]
]5 O3 R% w( ^' w4 A
set note (note *(exp (- (1 / k)))/ k). i- ^$ r& m* r. K. F% W
set credibility-list (replace-item i credibility-list note)
1 @% i0 Y2 u  mset i (i + 1)! i* f9 s3 Y) _9 S. n
], E% R5 O6 d7 s/ A/ S, X
end
- a2 _6 L; m) M* G3 z) c; J0 l
1 R  a5 j; `9 `9 ^6 W6 b  F& tto update-global-reputation-list4 O8 k& S4 ~" a8 S
let j 0/ Q3 |2 x3 C4 z+ y% f
while[j < people]0 V/ G) r+ S9 ?- D( B
[- E  ]: d  R' C+ g8 H: m* F
let new 05 [! K, W8 l, \
;;
暂存新的一个全局声誉
5 x/ z+ T( Q, d7 f( _- w9 Y2 ?3 hlet i 0
! m/ p  w/ ?) R9 Alet sum-money 0
! [1 H) [) Y" M# Wlet credibility-money 0
, p1 Y) Z% l3 [( M+ }  {while [i < people]5 O! Z& H1 B$ U
[( g; D( P$ R# Z! b# J+ x! _
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
) Z( y3 ]" h8 _8 V3 C3 `set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
$ E- a4 I( c% c* M* g& S* O4 P3 T& oset i (i + 1)
4 V8 p) L; Z% l" u  h+ e/ ]: D]' r" `" R0 J6 B
let k 0$ A) `/ X% I8 i$ d
let new1 0
0 u* d/ j6 |( y- s( b) s. l( dwhile [k < people]7 i6 A6 W* k) c% G
[
# A+ s' t# i* I" P& h" ?, }* ?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)- D$ |! B  K% j  }: T7 g" F# o
set k (k + 1)
! k6 ?3 w" G1 w) l  E]% a. Y  ~9 |: n9 ?# c$ A0 s
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
* G0 i& h7 l+ G! vset global-reputation-list (replace-item j global-reputation-list new)
6 W5 Z0 X  q9 Q9 d3 l# _set j (j + 1)
" I9 b: ?# A0 r+ R  L/ r, ?]$ A1 ?. Q' t) x! ]. m* t9 {/ P- A
end+ N9 T! x' N+ F  s0 v

5 D4 I/ ?7 a* a* f! S' U
# d  R  r3 N* e1 }& Q# @" ^% [- ~" K- G( B0 D3 Q" |
to get-color4 A/ \- S  h, I' \! ^
% s1 p' N- w# Q1 p3 @8 Z
set color blue
, H5 v* o5 p( r: Z
end* q3 R, ~4 Q+ q& O4 \
8 Z& _/ t, _/ H) q4 {9 ?
to poll-class
( e2 g  m, Y5 ^  Nend5 B& y& P0 Q  c5 M; j3 n
2 y$ i; L: l! y6 ?
to setup-plot11 y( m/ H8 {7 g; B

3 _3 ]1 T# w* Y( Z2 \1 \1 ~+ h+ U1 wset-current-plot "Trends-of-Local-reputation"
0 P+ ]2 @+ h" |/ G; l/ `
) h/ f, M' Z" h! W( O7 @+ r# L
set-plot-x-range 0 xmax

3 t( ^( r4 Z* M& g  _& U5 v' U# @/ ^! [( T" A" F) a  q
set-plot-y-range 0.0 ymax

9 m; r$ p' x3 K4 q0 g& |1 ]end4 a. E/ W8 ^  H+ P$ \5 r5 k
/ Z1 H- B1 R8 f+ @+ m. \' m6 E
to setup-plot28 N( Q: l7 D  ~& O% ?6 K

# V6 `0 \: D/ k# o" |set-current-plot "Trends-of-global-reputation"
( I8 Y. F; V* X1 Y# F1 z( u7 s9 q

! ?' N- g& O1 z: Fset-plot-x-range 0 xmax

; [  Z' v+ Z+ l+ E; {( b) k/ Z
; u8 e4 V. O* ]( y) I3 ?set-plot-y-range 0.0 ymax

$ U8 R- ?& J( w6 e9 k1 vend
9 ^3 u# {4 Z# f7 V9 p, E
% O$ X/ t3 I' s: L; X; E. Qto setup-plot3
6 B: D2 X7 J7 O6 f3 z& J, f! M( k! j' R1 d6 n! T
set-current-plot "Trends-of-credibility"

9 I8 k/ @! y. m# D, i
3 ?% m+ e2 i+ _set-plot-x-range 0 xmax

, o; R8 T7 H- c; c' ?! M4 t$ I# i  W2 [. R4 n
set-plot-y-range 0.0 ymax
" j- V3 N- ?3 {) w1 U; W" i) a
end
, c& \7 J' D. l7 s( Y1 {$ M) M1 S3 t  ^& _: \0 M+ L1 t- o
to do-plots, p5 ~7 S$ b, v
set-current-plot "Trends-of-Local-reputation"
/ L8 g0 a3 k9 u/ A% r$ Aset-current-plot-pen "Honest service"" f* F2 K+ Q6 s+ i* D
end& b6 r. r7 x! e: E6 P+ G' n) y

) |6 u3 z& T0 I* f3 O0 }( 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.
2 P: ]$ ?0 K7 y# S* \
5 t* C8 v$ f- v3 u, N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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