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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:$ B9 f& @$ p; J
to do-business / D7 V. O  v$ o# c4 H- y4 }
rt random 360
9 i! T& b) V2 j/ h0 @) d, b fd 1
! L  r6 ]# d$ k) [# H: u  K3 C3 z ifelse(other turtles-here != nobody)[
# N( h- J3 G' ]% I! L   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
$ X6 H* y+ [7 p   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
6 n5 q1 i! R8 A' V3 g  M- J   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
% J0 F* ]+ D- S0 [   set [trade-record-one-len] of self length [trade-record-one] of self
! t, i3 E( P; J5 N% d0 w   set trade-record-current( list (timer) (random money-upper-limit))
: a! d+ {( `5 j4 `; i2 f9 F/ r0 o2 \* L
问题的提示如下:" J% Z/ m; ~: H$ g' A

4 M. ~' I1 M! c5 m6 i) l5 |9 Xerror while turtle 50 running OF in procedure DO-BUSINESS3 X4 h: E" K% q: I' f2 ~8 i
  called by procedure GO" }/ r8 C1 A: e: z1 r
OF expected input to be a turtle agentset or turtle but got NOBODY instead./ W% q2 A) e, I6 S3 O
(halted running of go)2 q$ S5 T: o7 z0 N( L9 G0 U" j
/ e! t0 E) |9 S) U
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~~" z" U$ f' [% p8 p3 j! |0 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. L9 c, Y, I3 E
globals[
5 E- X* m/ k. l5 p! v# Txmax6 Y/ q7 O7 D6 y- Q
ymax" H6 \$ R8 H# j2 f
global-reputation-list
4 V1 ]1 ]; E  m0 w- I5 U, f, B- T5 P8 E2 r
;;
每一个turtle的全局声誉都存在此LIST& F2 J( K: e2 Y$ n
credibility-list; L! G& {9 i. a1 {
;;
每一个turtle的评价可信度
0 v/ f# a% M, D, r7 x# mhonest-service' ^8 a$ W: m% w" M% k7 W
unhonest-service
: K5 v" Y' Z0 a4 noscillation; g8 [) T2 f9 o
rand-dynamic
8 ?$ w* k. z$ P1 G/ q  E! l]
) I) J. O) Y$ [
5 U& M' W8 v2 z) c" ]turtles-own[/ l, ^, P4 G* E$ d' a1 {# f" j
trade-record-all
; [* G! O4 B6 T2 O3 n: n" J;;a list of lists,
trade-record-one组成* V: T2 c* {* c  o1 {7 z/ L
trade-record-one. o* V& s1 v6 i1 @/ Z4 }8 [, r
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录& w! C% n0 K5 d( ]' ]

$ ^" v# ?# |9 P;;[
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]]% O$ b5 h+ _. B* V. U' Y+ z, ?! }
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]7 e& [# Y4 U6 L( X& e8 Y
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
- s% @7 X% C( h8 a  T1 Dneighbor-total8 |/ u7 z$ Z7 ^+ d/ A
;;
记录该turtle的邻居节点的数目
, |( k2 U" ^3 F8 @9 ^( etrade-time
) K# V( T, ]& y* Z5 B8 q;;
当前发生交易的turtle的交易时间8 q7 q' W. o% u/ X' r/ `
appraise-give
& q3 X  m7 K0 P;;
当前发生交易时给出的评价7 V' s( m4 @2 ~+ D+ O0 y
appraise-receive
8 k4 L0 x4 `/ I- d( F$ H$ X. p3 F;;
当前发生交易时收到的评价9 X3 N% W6 e- M, x
appraise-time
5 ^0 I; }) T4 S;;
当前发生交易时的评价时间9 V2 C0 T# A# `% F
local-reputation-now;;此次交易后相对于对方turtle的局部声誉) A0 k9 m0 s5 t- p+ D/ m3 ?0 T  A% L
trade-times-total1 {' ~9 r+ J$ Z3 m+ j7 m9 n( b
;;
与当前turtle的交易总次数; D, t; F/ p6 n; W2 x7 [
trade-money-total" j1 z6 B$ |( I
;;
与当前turtle的交易总金额
) O0 `+ d3 Y: ?! f: ^  }) xlocal-reputation
* X% i3 S: i$ J! [) \( `  tglobal-reputation$ `- X3 e3 ~3 o6 e* h5 @; }
credibility0 X! t4 x7 I: ]5 D4 P+ e
;;
评价可信度,每次交易后都需要更新
1 a/ q$ t# D9 e5 [1 L& {credibility-all
/ g* Z+ ]# b& Q* u4 v: @0 E;;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, V1 l. ]; `& u' _' Q4 a

5 C; N, J' P- P, ~' J( D3 E" b8 A;;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: @) `1 L7 P+ \$ y) w
credibility-one: A! I) O1 S5 }6 O9 I- k; `: Q6 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* L4 c0 b1 a. i3 z( ^+ T
global-proportion' j& E) P6 M: [# Z. b! p, {/ T
customer& ^- e2 U/ J* h% _0 q  i
customer-no
5 e, q6 ^% g. G8 mtrust-ok
6 x3 J  E1 U5 c- k( Itrade-record-one-len;;trade-record-one的长度
+ C( V: c+ w0 M8 n7 Z; Z& N]
- M9 [+ a# o" i0 a8 v) c4 O5 `: O; {& c+ F
;;setup procedure
. {  ]. F5 l8 X+ Y% x7 F# W$ m' R9 V2 Z+ b/ x  f1 g
to setup
2 E( ^% C. \; M2 Y$ l/ V1 b
. G1 r* t" o3 A1 gca
; Q6 ~- J. X1 n9 @+ ?' T
1 o7 f* ^2 b* @
initialize-settings

3 I" v* p- s# p$ B0 S
- E9 b7 E: E: }$ W; |crt people [setup-turtles]
1 K- T; O# G% Z
- n. R! `  C3 ]/ a$ Y3 i0 h& s& Y
reset-timer
# _; a, H- Y% P

; s( c% c" P4 m# l$ q9 Y6 n, [( ypoll-class
! }( C* ?2 P. F, [
, F5 l; f/ h/ d2 B9 w# q( S+ j
setup-plots

& F1 w) ?# Z0 f( {9 d
7 y3 K/ d" C8 z( Y4 odo-plots

8 W% s; N- E/ y  uend" E2 h# U# ~) u$ U9 B

; R  O! X2 Q8 ^' ^to initialize-settings, l9 R; A, q4 C6 `, j) Q

! Q( |5 U3 q: }) o) F; g3 Fset global-reputation-list []
% Z: L% Z" C0 z& \- y1 v2 K

" a/ M5 @6 U% v. s- k' J6 H/ wset credibility-list n-values people [0.5]

3 z  G) b" \5 S( C. E; i/ G% H/ Z% G- W, r1 e# v  Z% R% }
set honest-service 0
, {! y; G* d5 ^% p. A
9 k7 _. O6 J# F+ }% u# c
set unhonest-service 0

  ]! n" }0 A) N& ~6 E+ N
3 T0 F: u+ J+ b1 e5 z2 a# r- rset oscillation 0
! W) R6 r: Z% M0 Z( [

$ u) Z2 e. B1 @* B3 C4 x( oset rand-dynamic 0
9 F; y) Y* K/ c. J
end
2 _9 @3 ?& {* e9 I. \- c, L  t9 t4 C; `- @
to setup-turtles
. ~6 k( j. g0 U6 I3 j$ pset shape "person"
" F. u+ D( F8 K0 b& @2 A; L# msetxy random-xcor random-ycor) K) k3 y, M7 j7 J  w/ I
set trade-record-one []7 i2 y4 ?8 Y3 `, `9 a9 k2 T

: X9 g( w/ L# z5 l' p3 d* E1 gset trade-record-all n-values people [(list (? + 1) 0 0)] ( w: F2 |# g6 {  \  V
) v( y+ |1 q( @
set trade-record-current []
0 I2 ^! A& }0 X( uset credibility-receive []
( `4 t/ m! M" h" W5 P* t9 H, u$ ~6 O$ ]set local-reputation 0.5! E+ I% {+ [9 R) S' S" P/ ~
set neighbor-total 0
" a6 U7 n+ q5 Z; @6 n1 wset trade-times-total 0
# C9 B8 o  E( u' Fset trade-money-total 0
# C' s4 Z: {1 s2 n9 {" v' Iset customer nobody
2 K# W, s$ v0 O" d  uset credibility-all n-values people [creat-credibility]
/ M- r' T' U1 x( e7 J. _set credibility n-values people [-1]  n; F2 h4 \6 h/ H: Y
get-color( p: ~3 |9 A  `+ w

, h% P& \# }2 ]5 L. uend7 a" B) m1 `) U$ D
# v# r  b; x. ~- @# d/ n
to-report creat-credibility
$ B* h& I9 Q' H) ^; f- ^. Dreport n-values people [0.5]$ u/ M3 ^7 b$ t% ^4 {9 I9 L
end0 f+ Z( m/ b# k( I* \6 w

' v# l5 x$ T! K1 B6 zto setup-plots  T7 Q2 y9 L+ i/ m# X! M

' [( O- w, K5 \$ t  \( v0 wset xmax 30

2 V# f# h; i- E$ Y& E# v
" S( f" J& ~" c: x5 g: Jset ymax 1.0
* [2 Z- i) }7 s( I
" C( M1 u# K0 f" z
clear-all-plots

7 w3 ?) E9 T0 ^  @$ E" G" O4 l! \8 H: R
setup-plot1
0 ^& l) H. K( H2 ?

9 P4 G: M1 }$ `. @setup-plot2

/ y+ n( e7 k! |( N! O+ C! Z9 v8 s/ d
setup-plot3
# b1 K$ O5 D. f
end
5 \$ H' B% U- r6 M/ x$ M% \* _& V# |$ x$ @" T
;;run time procedures
/ [7 `. B( }$ ~- w& U! b% i
- F1 ~- `  ~; H; ~; [to go
) ^" W1 i& P' A( z3 |5 t3 s' Y
- v5 H6 s9 e: ?7 m, v% w/ ~& ?ask turtles [do-business]

! D) c0 }/ [& R; Q4 G( }end
  L5 f' z0 w" M% g& a
$ }$ j, i* C( R; u' ~3 Nto do-business
1 D6 _3 k2 \/ j. E' d9 m/ x: Z7 J

4 B0 W  {  }: u" y
- f/ w3 D5 F; {; O# mrt random 360
+ k- [- K% @; W% S0 T

: i; u: J( q# W5 x* r" v; H0 Mfd 1
/ w8 x% t3 r5 f6 q5 b
$ l# h: F0 k, S8 c9 K9 m
ifelse(other turtles-here != nobody)[

/ v8 o  {8 r5 u* p" e& v7 S6 V, {) d8 `: M: b
set customer one-of other turtles-here

7 R* p! E8 c4 a) @0 B2 e; Z+ @6 |1 i1 a0 F' J% Z
;; set [customer] of customer myself

3 F2 E3 _$ l0 [% e. H9 G! ?
% I! ]! o0 d' R, ]) {set [trade-record-one] of self item (([who] of customer) - 1)9 Q) S5 k0 \( y" h
[trade-record-all]of self
7 x" w0 c1 U" z;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
& W( b$ y2 S8 K2 O& w4 c4 k4 ?

2 p( [" l7 e1 P" ^. Yset [trade-record-one] of customer item (([who] of self) - 1)
$ S# x, P2 P6 a( y* B+ H4 x[trade-record-all]of customer
' z% U! z6 |# L/ W) l& M8 u1 c; a& s

$ }8 ~& V$ {$ tset [trade-record-one-len] of self length [trade-record-one] of self

$ i/ G& c0 O" ^7 b
8 X: y7 c% g5 t5 x) t. ^set trade-record-current( list (timer) (random money-upper-limit))

2 J- u9 P4 }. H% y1 e* w1 O4 E% _: ~% O) O
ask self [do-trust]
) L! @5 T. Y& r0 c! |: p- ?;;
先求ij的信任度
; i# @3 P$ V* ~) j$ d9 ^/ w: l" A( K. y# C7 {7 O
if ([trust-ok] of self)9 C6 t# ~0 j. w, {& i3 d
;;
根据ij的信任度来决定是否与j进行交易[0 v8 z  b5 I" F- j7 r
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself$ H# U9 I# n( `* w9 l

1 j' X; a% s. C9 @6 }2 {! d5 Y: r% v[

" a6 S+ A4 l. @$ \5 g+ T% x. B, q
, d. z: T- C5 \- ndo-trade
4 D6 N$ I- v  Y9 v2 p( J
! E2 B% C0 }* \7 D) [1 h0 m& a" ?
update-credibility-ijl

8 `4 T) ~8 B5 R
3 x. E+ H( ~3 Z* N9 F; u( gupdate-credibility-list
& \4 a  n; ?) F# U' U  f- q
$ g' }1 L# ^9 ]0 @  h6 i! b
" [( X7 ~4 E7 R3 T
update-global-reputation-list

2 O8 M/ q. g0 p/ r
* L9 h1 s* v. d. a; x4 jpoll-class
1 K) P' z  k( h1 D# }
9 R  S0 _% H8 S1 P
get-color
9 h- H& I8 z* c7 x/ p8 T
3 I6 |! F; r' B) T% @
]]4 E9 |4 u' l  D+ n5 w/ D6 q

% [( N1 A/ {( {& P8 V1 M;;
如果所得的信任度满足条件,则进行交易
7 G& m) }, i/ x* c+ r( e& M7 K
$ g1 M  K: u* A: z. j" h3 d[
5 X: Q6 d: r: b3 p

9 c& e6 J! p8 z% c* ?$ Z0 \4 `rt random 360
- _0 E' {6 A% k
$ E: _8 B% K+ P1 w/ ?0 C
fd 1
' v% O# l% L( I
6 q% @& B- B* r* u) K+ h! k
]
0 w& C) t/ {3 N

8 V' q( S, ~/ _end
$ ~2 H4 R$ [4 E3 d- A* j

) a" @: J; l' D! {1 {0 e1 _to do-trust / w/ i5 {% k+ V5 X" |1 e% t
set trust-ok False
7 x1 u9 x9 J0 @2 H" k8 ^' ?0 ]- L  ]& D* O7 Z( w. A
3 ?+ u8 x, M  X- M0 n- e( |9 E
let max-trade-times 0% c4 W9 A3 s& o6 j) E) ~
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]/ r$ {! }( W% b% v# O
let max-trade-money 0
5 W! B8 o- u+ @: lforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]& }; `6 ]6 ~2 j8 `) ]
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
" ^/ d) D# L* R0 @! ?& H0 q0 z8 {* i, k$ D" c0 M1 X6 p

* _! r5 j7 \8 K1 F' gget-global-proportion
4 h! g4 Y9 Y/ }let trust-value
9 l( U* z( V% ~8 i( g" U3 vlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

6 f# c5 v4 P; Dif(trust-value > trade-trust-value)# R1 V4 Q6 s3 w8 h3 F5 j
[set trust-ok true]/ d( O# P. `+ B+ E, G9 p: {2 Z) ^- d
end
, r. C  ?2 i; E3 d+ B' }6 Y
$ X5 O6 [% ~- P. {to get-global-proportion
% ?, n! |. N, m7 ~) hifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3), s% U$ ^& O5 z; r) R6 b
[set global-proportion 0]
6 h; V4 @1 K) m, x7 q[let i 0, m9 Y- Y) p: x6 r
let sum-money 0- z- }1 i$ \$ |2 N3 m+ k
while[ i < people]
6 w; a! o5 N) ]) t( G* e. g$ k[7 I3 I+ r; ?& L4 Y
if( length (item i5 A- m$ R! T  P6 f1 W
[trade-record-all] of customer) > 3 )

) P% L% H; s( E" F" H8 \% T3 l[
9 ?/ ~' Z: ]  T* z# eset sum-money (sum-money + item 2(item i [trade-record-all] of myself))" o0 [) t* O/ H3 J% F
]- T! b5 V0 `3 R9 v2 {
]& F. `+ s2 z- U' k) m5 P$ w" |
let j 0
1 Q; }. f8 ]& M3 w' Qlet note 0* b7 T- \% f% Z
while[ j < people]
. l+ s' U4 U" Q+ L) {# j[
8 K/ r+ k8 j/ z! q6 P2 hif( length (item i! b. L( y* f, }5 `7 z. b+ M) @
[trade-record-all] of customer) > 3 )

" ^0 G9 |6 e: S! V" O[
2 x; Z$ F  K) ]  k, tifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
+ E/ |0 k7 y) V) k) |[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]3 _+ ]/ a; i3 @, L
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]- c$ b& J# g; Q0 ?
]* t7 o, C/ Z; [6 p
]7 Z  n* a! r, s" `$ S3 Y+ G4 i8 O9 D
set global-proportion note6 b& M8 S; H; ]* @+ A& J
]
) q' K: p- G' f! P# y' ?end
7 R1 l  g& n3 H& E$ P  X+ _& T
# R, g8 q2 i0 P! h: uto do-trade7 [6 Y! _" Y! C) i3 o% ?
;;
这个过程实际上是给双方作出评价的过程- w2 Y3 ?- C7 d& {+ y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
3 ~% \* ?7 d! c2 o& `& ~) vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
3 ?8 o/ _4 y3 g$ [/ U! wset trade-record-current lput(timer) trade-record-current7 D) y  M9 x( W9 T0 o- t5 w
;;
评价时间
0 W- Y4 q1 R5 K1 Z( g) c. z/ J1 J) hask myself [3 d7 A6 W' g" e# ?) |  t
update-local-reputation, m4 r5 P! f! F8 L- ?- A
set trade-record-current lput([local-reputation] of myself) trade-record-current$ ]% W( v7 i! E& U  B2 q- b% \0 S; n
]
/ |  |" b2 @1 o+ s& F3 L( A. C+ dset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself- h( ?  n" a; w
;;
将此次交易的记录加入到trade-record-one
& q) [" S3 V# Pset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)! X+ Q  G" E1 A) ^
let note (item 2 trade-record-current )
+ i; \0 o* A7 Q( _1 Lset trade-record-current$ D: x2 ~+ b: Q1 m( u# ^
(replace-item 2 trade-record-current (item 3 trade-record-current))
" `. j) ?( w0 [* _' N
set trade-record-current. Z% N9 T. P6 C8 M6 `
(replace-item 3 trade-record-current note)
' i+ @/ }" S4 n: G) a/ y( Z  V  a: t. I3 b7 y: y3 B7 u" R

2 |2 \# _2 i6 Bask customer [
5 W3 W% l  x2 R4 f6 N7 Qupdate-local-reputation) g2 k% q7 q; A9 K! a- H1 w" {
set trade-record-current
5 M0 o' R0 h) d5 t  T( {(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
1 [3 ?8 d, v% D1 Q
]$ h6 I4 [* L0 m/ g- Z
( Q) q; G( Z; L. \
, G1 e5 l/ K+ s/ ]* i( Z
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer+ [3 J' Q, @6 t1 s3 A9 B

$ K: p7 g: n, @9 Rset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))8 B6 o% ~9 A' `! o5 b
;;
将此次交易的记录加入到customertrade-record-all9 w# N  O1 _3 H6 m
end0 \1 n) h) d7 l: u

# m) j( V& @9 D# ]- Kto update-local-reputation  O1 Z) f* N1 d+ U% v: \
set [trade-record-one-len] of myself length [trade-record-one] of myself. e& S& t, u; X( x% u7 [

" ~- Q% E0 e% y0 O- i: O! B' w& F  N: t1 R) k7 G
;;if [trade-record-one-len] of myself > 3

0 v+ h  W6 F) v  S0 |update-neighbor-total1 ^, V: e5 T2 b, j- j8 y
;;
更新邻居节点的数目,在此进行" K+ r6 Y9 k! v, w% }3 i2 E) W# `
let i 3
) Z5 X& A  g6 |2 r/ K- C7 ]let sum-time 0+ x! Y8 Z9 e. k; i+ [! ~/ W
while[i < [trade-record-one-len] of myself]
3 Y7 S& @2 Z' Z( P* P* ~2 }[
* L- o; ]2 ~% i5 m$ `  pset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )) z1 M. ~4 {# l+ L
set i7 u  u  a) y' w( t1 H. ~
( i + 1)
- z# r9 B: z9 n- i# M: L3 Z  f
]
' Y4 t+ a+ J  i5 N' Plet j 3
; X6 O- F* }: F& Qlet sum-money 0
# T0 C  M( m7 \: W0 I; l* \# @% ~while[j < [trade-record-one-len] of myself]
" E' e, ]# j# w  Y2 c[* C) c. V0 [) ]/ Y$ r2 t
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)$ M3 k* K7 T, \; T: \+ v( }# ]0 f
set j3 w% b) K* b. U5 g6 R9 C8 |& M" p9 o
( j + 1)

" h! ]; x7 N  h8 []
& G) N; z8 O; B# i) i; c' ]+ n1 Glet k 3- v; A& a  n* {7 H8 r
let power 00 F: z/ o( [# T* X
let local 0
0 L+ ^" f( e. y, i% I0 Ywhile [k <[trade-record-one-len] of myself]- B& g: Y0 ]0 l$ G  d* _) F7 K/ [
[, h9 m5 Z% N" r$ a
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)
; ~* B* M* D/ U4 ]" A+ qset k (k + 1)* n$ z" p& h& D4 v1 U& A
]
+ P4 }, v7 s: d- kset [local-reputation] of myself (local)
2 i7 D, Y6 h/ S( bend! g9 `1 ~. t' O, {4 h
9 }( l0 `/ w. x; h
to update-neighbor-total
6 C9 j' K( \# R
) [/ M$ A! r. i0 w& x; ]) k; w( rif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]: n4 F* r2 s# x- `" K6 t
! x$ [$ m! m* ?. U  X) H/ U

0 e( _: k+ ^: [( u$ M( Tend
6 Y  b6 o* R( [$ w: Y
. Q& j4 @% ~' @0 b. e2 T8 Z! Vto update-credibility-ijl
  K4 c- y, G& G7 A4 O) S1 j
3 w" @, u0 M5 [$ ?% L; 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。
7 K3 |$ u- E$ {% d% O/ n/ Zlet l 06 b$ R: [* g. ^$ A. d
while[ l < people ]2 _1 p  l/ l7 \* ~6 z+ 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
7 f9 }3 g& p* @9 b[8 a  ^, k5 a, {. ~% D
let trade-record-one-j-l-len length item l ([trade-record-all] of customer): k- U* n* B9 X5 Y- U
if (trade-record-one-j-l-len > 3)" ?+ {: @+ H/ m9 f- l
[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
" b) Z' C1 {. clet i 3
4 L9 N" |0 t: wlet sum-time 0) t1 ~$ M$ P( a: Y& u; z
while[i < trade-record-one-len]0 Y! r! L- q! S  ]- @
[3 K; Y# m: _) c/ F5 ^: p3 E
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )" u& q8 k1 U8 z5 F. b' z# }) x
set i. ?" ~  Z" A5 x
( i + 1)

$ b- J! F6 _$ F. Q% @( c/ f]' Q3 M( P9 p) k* f
let credibility-i-j-l 09 W4 h9 `! q0 i7 e& N
;;i
评价(jjl的评价)
! R5 D; W' U. H$ g2 G/ `let j 3( u6 d4 I+ _! b# s
let k 4
$ R' m8 j$ _. Mwhile[j < trade-record-one-len]4 X# V# l. v2 j& E" c
[
; E5 ^( J3 K$ B. V7 X7 H2 ~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
- a9 y8 H6 E& W' s( U$ v5 yset 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)
6 {5 @% C' l4 X0 kset j
$ B$ O5 C( [5 \% {( j + 1)

  F+ W9 D( w2 C" D]8 ]% l( M, U& P/ f
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 ))- [" a! ]: J, \) V0 `
" t4 \  k  x* v2 t

4 k8 _  `$ @4 l- y" g% F. `8 ?let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))* I" Q6 I3 t+ K  a0 u
;;
及时更新il的评价质量的评价
" A( g- O- G) H! U' Z% c- X; Oset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
0 H1 x& D4 B8 S, ~' z5 Eset l (l + 1)
# L# ?  X  S# P2 f7 V. a]9 o# g" J$ q2 o: g) C2 b$ X/ [8 m6 U
end* `1 t6 u" V+ r' ^0 n* C

* [  X) o; y" X  z* K0 F! u& h; S0 f5 gto update-credibility-list$ k# A* s# R8 N, X. O: y1 i
let i 0
  h8 c9 R% _+ W1 O- C% [" u- Wwhile[i < people]3 ]/ S9 j+ u! l0 s. t  t
[$ \' w5 C. ]% W3 G8 ?/ G5 `% e
let j 02 j) u; p' G2 X9 `5 A2 ^
let note 08 z2 y7 O: g: {0 @
let k 0
+ G4 v4 P, I+ N' {8 V- n/ Q;;
计作出过评价的邻居节点的数目( d2 l% m+ M8 I0 _3 o3 v
while[j < people]9 q' e0 v9 H4 t, `
[7 Z# M; f2 B- B) O2 |
if (item j( [credibility] of turtle (i + 1)) != -1)3 u( P" n1 z. t5 Y  o
;;
判断是否给本turtle的评价质量做出过评价的节点
- ^8 I  ?- O+ w6 r. G1 t[set note (note + item j ([credibility]of turtle (i + 1)))
( k7 x% R( k" c8 A8 D;;*(exp (-(people - 2)))/(people - 2))]
6 w0 l( ?# Z5 T$ K# d" O6 I
set k (k + 1)* E* K- ^! ]% V3 U) b1 M0 v
]
) w6 S: W1 c7 q9 }set j (j + 1)
$ E' @: H# p9 \8 I]1 A3 h5 W/ o5 ]& o! @  O& W% l
set note (note *(exp (- (1 / k)))/ k)
1 j7 I  V/ {5 j; M, x8 nset credibility-list (replace-item i credibility-list note)' v7 \0 u) |: q9 g2 h
set i (i + 1)0 c% Q% H4 |* J
]
5 c: J. b8 ~+ G. R6 ^& U; L$ \& vend( _3 K' u: T1 y; r! b$ l

3 @8 O5 J. p% kto update-global-reputation-list  p" B. t0 V* P/ j  w  k
let j 0
6 {- H/ O9 Y! I8 F# lwhile[j < people]
9 l' z( I  ~' O+ M/ Y/ s" K7 z# ~[' g: i3 b! N; B: q$ J5 B5 @
let new 0
! d, _  ?; }7 H;;
暂存新的一个全局声誉+ A: f, l4 j# }1 |  ?
let i 0
9 j2 z) p4 p) ]# E1 A8 x% Llet sum-money 0* ]; J0 R6 i/ B, N. F3 h+ ^- k0 g8 U
let credibility-money 0
9 n5 v) w" C5 w( C* zwhile [i < people]
2 X) B) F9 P/ i+ H3 W5 k; u[
- E% L+ }, S7 h5 o* h+ X7 z- pset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
/ K7 E# C; }( |0 J* D8 Oset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))& z* L$ ~; K/ _% R
set i (i + 1)
7 _* X  V8 C" E7 \3 P6 e: v: X+ x]
, P) W  L  z7 i6 s' Elet k 0, p. `# b. J6 p  q- Z. z% ^" V8 C
let new1 0& _6 d" l9 A* W7 t3 }" S
while [k < people]+ k( U6 K. q) J
[
4 _7 g3 C+ C- 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): D4 U1 h+ V: G$ t, o
set k (k + 1)
$ R$ e9 h+ t8 f]; T$ p4 g" W+ F/ A  N
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 2 T& N; y5 Z/ v) e; x! X2 v
set global-reputation-list (replace-item j global-reputation-list new)) r% V9 P* \8 c% h* o9 c+ i
set j (j + 1)
. h5 }) g; z5 d) c( Q) o]
9 X5 o/ }/ D$ ^9 U9 a4 uend
; V, j' Y# v: M4 r7 |. ?' ^6 e4 g2 D) d# ]+ N
( L0 M5 k' z( `, i9 x0 s/ @

; v' v7 h! g. q) Ato get-color# ~; p& A$ t9 {

% F+ ]6 `) ^/ j/ o& \: Yset color blue
1 L7 l7 A) y+ P* W
end
2 l# K( O1 w' A7 d5 J' G# n9 b$ P( f9 s3 Y; B: O
to poll-class/ k/ A8 S  R# ]6 X1 E5 P' C
end0 E% y; l' |3 o; P+ ?
% z6 {1 O8 p9 b5 A' R5 G
to setup-plot1
& h3 E8 X, {* e- t7 p$ e& H
- Z# k. p& T: v( l- M6 `/ zset-current-plot "Trends-of-Local-reputation"

' C7 N* B$ V/ e9 ]! c6 _! G. M4 j. L3 D( P- _1 T
set-plot-x-range 0 xmax

& d  t$ W* t; V5 M
/ C  X; t9 n+ z8 P$ L1 ~set-plot-y-range 0.0 ymax
) A1 ^6 l/ R& v2 z6 k  N
end
+ d: ~" a5 C1 T# T, o$ h: O! g' h1 D, x& T4 W$ W
to setup-plot2& w4 J  X( M0 e- O

3 `9 L+ `5 v, e, A8 J: P& Jset-current-plot "Trends-of-global-reputation"

3 F; V4 I- _+ L7 Z: |6 K  I0 P" d3 [* n- _& C5 _3 g' m
set-plot-x-range 0 xmax

, b. _" ?0 S2 x6 o! R" w5 v7 q/ x1 A4 D* z$ W# C4 w. k& ]
set-plot-y-range 0.0 ymax
( {$ J+ U+ K+ d- \4 e
end
- w9 m, p1 A* }8 ?( F9 b* n2 X4 i  u7 H
to setup-plot30 V5 W7 s' v0 R. v$ L

/ B' g. ?, f  n% t% dset-current-plot "Trends-of-credibility"
  E  |: O0 D* [% b" b; E

; B9 I7 {+ f( J' v. N8 }% hset-plot-x-range 0 xmax

2 R* @1 c+ L9 ~. s- V
) L5 J6 i$ z) c3 `1 Yset-plot-y-range 0.0 ymax

3 O# u0 D- v9 m5 f3 i- {end
6 R3 R/ x2 R. F1 s- Q2 A8 c6 ]# B* p! a9 t: ?, p, i
to do-plots( ~# ], ]- d! d3 G9 Y  v
set-current-plot "Trends-of-Local-reputation"
3 A+ I) D! W# h5 eset-current-plot-pen "Honest service"* d0 [) F4 U, o# h7 U
end
' t2 y. @0 E5 }. u' o( Q- @* b* p
) Z& U4 f! k  `4 f' o[ 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.
6 E% e) d1 c$ q2 i* v4 H( N9 J! {. [$ x$ 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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