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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:
5 w% \$ U0 N$ k/ x( O; Dto do-business 7 u, p6 h" t4 A% q
rt random 360  M. u. K) ]+ ?( @' o+ ^. N6 Z
fd 1. Q# |. _1 ]2 g
ifelse(other turtles-here != nobody)[3 L* b/ _& A+ f& j/ L& Y) v/ c( k
   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 A5 j) p( Z  R; d$ A* y   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
( K3 E3 d; y3 x& w   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer9 C" U9 F  s, q. j* ?
   set [trade-record-one-len] of self length [trade-record-one] of self
2 p! h& j- D8 J4 ]8 W. C; \   set trade-record-current( list (timer) (random money-upper-limit))
; l' t  G5 G0 _* Q, O8 K0 |! r% U; z7 ?! Z$ ]2 `+ o: `
问题的提示如下:
& }5 M5 k) w+ f8 f. R* @* a4 R% z- Q" [& G* \3 `
error while turtle 50 running OF in procedure DO-BUSINESS2 h3 J+ Y) g  u4 R! w
  called by procedure GO: y2 T9 ?9 |  r9 z
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
; C4 T5 [: n: p4 i/ w% t- |
(halted running of go)
3 J' B  @8 S8 u( q' Y2 r! L
1 C2 F) C, i, J. l: R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~~0 Y2 G; U  [' o& j5 y- n" i: M
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* y; Y3 M* C$ z6 ~
globals[
& Z, O( b* f# \) L2 b0 E9 L1 [% sxmax" a: H2 F' y# B
ymax
/ o& V; H5 o9 R. _$ r; Pglobal-reputation-list) `& f( x0 k2 e' ]  m& [: ^. `0 h
% `. c" A8 P& l8 v7 N
;;
每一个turtle的全局声誉都存在此LIST
' g7 t/ j$ e1 w5 J7 mcredibility-list; w6 t3 a* ?1 `1 a, V- h4 ?
;;
每一个turtle的评价可信度
/ P, L6 E" b8 G: T& V3 D1 |4 R5 o$ {honest-service
. k8 Z1 a' u0 s6 P1 munhonest-service0 ^$ H/ i2 k- Z( O0 H. w
oscillation
- \7 \" W, ?6 O' {1 h5 \9 W  frand-dynamic7 V( O  i: f! g0 O" ?. v
]2 v) a0 {% n4 B: s! H2 M; W* a

2 }: X5 B& z; L! v1 k9 Jturtles-own[9 `6 y3 N/ c% k; y
trade-record-all
+ n5 F) }6 O2 C7 o$ J! N, d;;a list of lists,
trade-record-one组成
1 I$ R. H  T0 E* ytrade-record-one  H4 g& }" u/ \5 g4 a$ w5 n& \
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
. H# g7 u( K$ A6 |8 G2 h6 x5 }' }$ G4 ?, 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]]
( B1 K% [1 r0 p: a0 ]9 ]+ F' Utrade-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]) y; \5 Y0 Q  _9 s: i0 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
* R" `8 g. p2 ~# i" k9 L- E3 tneighbor-total+ E, }" N" \8 ~7 D$ e* P& f
;;
记录该turtle的邻居节点的数目) G/ T, ?* s9 }4 x# ?8 ~) ~
trade-time9 I) O6 e) G. Q# I# [5 c
;;
当前发生交易的turtle的交易时间9 {& V4 S/ o* V) o( k4 G
appraise-give- s0 J/ p5 _$ }- ?
;;
当前发生交易时给出的评价
' p/ A; |3 D+ rappraise-receive* k% s0 R) Z% ^; M
;;
当前发生交易时收到的评价
( U7 v* a) a! k. nappraise-time! o% B# m6 s6 b7 d; ?$ K3 x' I
;;
当前发生交易时的评价时间1 o- U8 @& E+ y0 Y; M: u0 Y; w+ t
local-reputation-now;;此次交易后相对于对方turtle的局部声誉. k, y0 f# Q0 J* l- Q; W$ n+ d# \4 E
trade-times-total
5 f7 V+ ?2 S+ X  U+ a4 h; I;;
与当前turtle的交易总次数
5 c/ I# r. C$ H; }% h: f( ftrade-money-total. D7 E: T' H& U" M1 b1 G9 z
;;
与当前turtle的交易总金额
) k& q6 L% g! E( t) y# ]7 `4 Xlocal-reputation4 U. s' S7 s; q; a1 \' |
global-reputation
) d4 O4 b1 B( t: xcredibility
( A* K5 o9 f, y) W6 ?;;
评价可信度,每次交易后都需要更新
+ x" |% A1 E/ J1 x: pcredibility-all
$ z: Q- K& S# F/ q$ l$ W;;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$ m/ w8 Z; `! c1 O' e$ d

* x$ R' H; g* O2 v;;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
) z0 A3 K8 y! Ocredibility-one5 Q4 [0 [7 m6 ?) O0 l/ [- M
;;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
* K8 R( T+ E: aglobal-proportion/ |" M9 _8 G  C5 Y- O2 s7 t, i5 b
customer
% Y5 ^  K& i6 v! Dcustomer-no
7 V: J7 M0 L- g; q! e( y0 b6 x: M' D5 f& mtrust-ok
8 D% E( M6 b* g4 ]trade-record-one-len;;trade-record-one的长度
0 U0 C* B6 w! g. d( l- l) {]& f& b. @8 g' L$ C3 G" {( v* J5 v. F

( D$ u  |( s4 P;;setup procedure
8 `5 w! D" `+ U
: g& R- x! Z3 y5 i" wto setup) u0 z" k) J) {2 a* P
' t$ ]5 t% ]; k5 r/ ?6 r
ca

6 U5 e0 P) m  K1 x' f: U5 d* X( Q3 O4 O; n) P( D3 Y& T
initialize-settings

/ h- @3 B( w% O2 M) u1 k
: A' R% }( ?6 z4 h, Y7 S1 kcrt people [setup-turtles]
+ {2 K% c( H" F, B6 `0 r
; d$ t4 D. }( I( B5 j
reset-timer
: g- R% Y( w7 O7 x

) M* |, Y$ s% z( Bpoll-class
( d# }- T' F2 h- Y0 x' j

* a  S+ f1 H8 B" E6 S! f2 t. Esetup-plots
: Y6 f4 v# x' Y1 i6 \
* a: B0 {2 t& R; \3 S& T5 H  u
do-plots
$ E1 i: P' v3 }3 {+ h2 K* Z/ t' g
end
- r: V* Q+ w3 ^) P: \) y. ^2 s$ A  X4 ?+ Z
to initialize-settings
  U) a8 d* P: G; g& {2 K7 ~8 N4 {9 `/ K- w7 X
set global-reputation-list []
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: y! u' g. L4 W+ w' a9 [  M
set credibility-list n-values people [0.5]

% U' g9 U" x9 Y# [$ h& {* K! m6 K" t# w0 f
set honest-service 0

2 \4 q5 @9 D$ y4 j6 X
5 L( i, _6 Z" r& T2 z% b( rset unhonest-service 0
: P4 Q! {- G1 W! p5 w3 ~9 A
# R$ a" b& e. Z! ?0 T% D/ ~' j3 @
set oscillation 0

+ T  s0 h) A  e+ Y9 i, F* y1 c, S# B0 ^: e  f: s1 d4 I
set rand-dynamic 0
1 h5 ^$ z, }+ a# D2 M: P
end
  r$ @4 j4 n8 Z4 j
% q9 Y: r3 F$ }, {, \; v7 O# [5 rto setup-turtles 9 A3 S  c6 T* v7 X2 o! F
set shape "person"! m# X4 G! X6 u9 k
setxy random-xcor random-ycor
8 v( h' S0 |- V% H! d, a, W/ \set trade-record-one []
# }8 ^% d* {, L4 d+ c9 W, b" E  d

+ c* H) _4 n' hset trade-record-all n-values people [(list (? + 1) 0 0)]
" ^, l. g& `( Q  i: r9 X

' W- m* C1 t; H' _1 E0 B5 n8 G; @set trade-record-current []
+ y% X2 v+ N2 }2 m; g! h. z& b& f1 Oset credibility-receive []/ D$ ]" T7 z2 }) X
set local-reputation 0.5
! K2 ?7 P5 d/ g/ e$ bset neighbor-total 0
' W7 {1 n0 l/ P. n2 Z; e6 Dset trade-times-total 0" i& f8 w& c) W7 h  u
set trade-money-total 0
. P, Z8 W# U  W+ `" sset customer nobody: q4 V4 i: u$ g; G3 H! t
set credibility-all n-values people [creat-credibility]$ Z. v2 K& x; d& a
set credibility n-values people [-1]" h$ [" ?. j$ C5 O
get-color
; {% [1 n: b' t1 m
2 N7 ?! ^" o& L, S# ?- C
end
' B7 J$ ~$ {. A2 C# D4 `# G7 y$ a7 ~9 n6 e& i% O
to-report creat-credibility
& E# g% Y2 c" s+ n- o$ h- Hreport n-values people [0.5]
1 P  `& Z% [" I8 w$ W, e& ]end0 C$ Q8 V7 d9 I# r  ^$ U- g

5 u, ~0 i3 d( ?, Mto setup-plots
$ r+ z( H; O' s% H- i. X( g6 K. U  Z) w
set xmax 30

* j4 a4 E. M; n: m
, g9 w( E+ t% k, _! _# Zset ymax 1.0

  J* A* U% ]+ N) X
  @; A& U1 N2 T1 ?- H% h6 l/ I( `8 pclear-all-plots
% E/ e* h/ g. h; }/ Z5 u2 w
: f6 e: Z( V1 P. O* ~6 I/ S! @* ?
setup-plot1
5 {! W# a, c" F

; a* _( W- M& B3 usetup-plot2
$ `6 M! T# X$ P4 E  l

8 o0 }1 {* W( s& ^, D/ \& Q0 psetup-plot3
. H2 ?/ [1 k% N1 Q1 d2 Y, D9 `1 n
end2 Q- b  p1 S, e8 \2 l) _4 g
7 [: j9 D' j4 {# j( S
;;run time procedures4 j) n3 j/ [1 ]

+ X9 \  j. a4 Y# ?3 s: dto go
: P+ M! n) R* w
+ f, K! n7 `8 x! f; f; z/ B9 w( \ask turtles [do-business]
: Q+ V- _: x. v! r
end1 M+ f3 E9 Q+ n7 s
- |2 N6 Q# L2 J- w( S. I
to do-business
% r1 H# x  ?# K8 L! M7 ]7 _; s+ ?

/ A$ r+ P+ N" e3 ~& C0 s' T% J/ e0 [4 U5 v) z4 L
rt random 360

- y; g9 y, q  |
/ t6 M! s/ U( Q2 x4 J. Xfd 1
- R0 I, C0 l* I3 ^9 T/ \, B

/ ?4 H$ h+ k' I' ?+ Y6 }2 Uifelse(other turtles-here != nobody)[
% R% T. c$ j3 L" \. F) G' b

8 s2 f0 ]5 ~' x. X7 n# Y' Xset customer one-of other turtles-here

$ [" E3 t1 W, w% g0 }4 o- f) A
, I' K# T2 a4 s6 g;; set [customer] of customer myself
  a6 A3 O- f7 C& x
* G4 u! D) H% _% v8 f3 Y9 J
set [trade-record-one] of self item (([who] of customer) - 1)
1 _) S% H* t$ i  \# Z5 H[trade-record-all]of self
8 w; n. m( i1 V0 O% J3 P;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

7 [# i7 J, f! x3 Q; h; \! c6 L. C& u8 Z+ d: B2 x* ]7 r
set [trade-record-one] of customer item (([who] of self) - 1)
9 c7 N" U& Q2 a1 V. N[trade-record-all]of customer
# a- ~' @3 ^; z, W( k% j8 j! c
+ g3 A+ Y  v0 k4 c3 D/ k
set [trade-record-one-len] of self length [trade-record-one] of self

7 g  b, M# m/ {3 M5 N+ p8 U7 H$ j# z6 l! `" G6 u+ A5 ^# Z, Q
set trade-record-current( list (timer) (random money-upper-limit))
/ d1 l( d) _" S+ T3 x. v
8 M$ O& e* \2 p& g- x
ask self [do-trust]
( D5 B$ |# k+ K7 l* ?;;
先求ij的信任度
+ C  K& J6 v! X' p2 |% k; |% c; ^
; U7 ~/ F: _* _if ([trust-ok] of self)5 ]( K. E$ `/ G# l" D: A+ L
;;
根据ij的信任度来决定是否与j进行交易[
+ r3 s( B. b  V% `4 Jask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself. R; }! ~* h# _
4 L' a( m/ V/ |- M- R+ M
[
" C. s2 t$ X7 i$ W. G
. k& a8 Z  h# U
do-trade
% @' X1 t+ K: o  z6 G+ M: o7 U  V4 [

3 z: H3 i% z5 J9 v& q6 ~update-credibility-ijl

) q$ F" C5 o# b6 ]
$ z% Y: h" P/ r# I& f& `/ Aupdate-credibility-list2 {7 g/ X/ d6 g. m

: W3 j. F! d' R: W) Y) Y+ N2 Z" X: o& O1 {
update-global-reputation-list

6 J9 p. ~3 s$ G, Z9 \' \8 F( C4 @5 c( m6 V8 |% i3 l
poll-class

! W& F% @% c+ P/ z: R" K5 c
  Q) f# o: j0 }+ l& m2 V$ f1 }% |9 _get-color
* z, g- l% C( k" ?/ x6 \: [# p

( w. P2 [" x; r; t3 W]]1 _- F. y5 M# l) b3 b& O4 S' G
* J4 T) D  h+ P+ ?- T+ n8 t
;;
如果所得的信任度满足条件,则进行交易
7 l' U) ?, P$ u; }8 a' E5 D8 ]9 n4 N& x  [. {5 A
[

% P) }& A, E1 O7 j3 `6 D1 C' x( @
; c- T# n; K3 y# rrt random 360

5 e: w, v2 ^+ ]0 u# F( i3 `" `+ K, F, @5 u; ^
fd 1

% X$ K* }( S# e& I
' {# H8 ^& H3 \) n]
, t; y7 Y9 g( l1 E0 _/ ^
; ?. z! t: j) G/ l5 B
end
1 v/ s' Z, W0 H5 Z' ^" M
8 B+ s/ t, }) t8 @( P
to do-trust
9 _  \! @( @  n2 q8 H! `set trust-ok False' x) K' y. l# D. K1 K) f) r

% M, `, B) Q% q

3 e4 ~% Y* I( h1 k8 {let max-trade-times 0: i- b, M4 ~2 B' o, n# c3 P% E2 P
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
9 ^7 e- W+ V* h3 z7 c' O: K3 s. M, _let max-trade-money 0
& C, s) ^. Y8 _) r: V& Iforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]2 p+ O- _1 m9 n! g  L' a% r
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
$ x. t( `% h* D- M! x# g# J% z& R$ D3 _& e8 y. V! {
& Y6 r8 t0 n/ |) Y9 `9 M: A
get-global-proportion% Z' U0 d6 h8 w- I" W8 R4 P4 j
let trust-value7 Z/ B  f' n2 @  W* _  p; l  q+ N. K2 M
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)
8 y! M, W" y$ V0 F" D
if(trust-value > trade-trust-value)$ F" [) v+ j. q& S
[set trust-ok true]2 t2 N1 a! a2 g$ q
end
+ S/ {# G( w" s6 B
  w9 {# {" g( f, r$ [to get-global-proportion+ [+ ?( u4 _5 `' W
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
! M' Q# C" Q7 o: n5 Q1 |[set global-proportion 0]% a0 u" ^% ^& I( C1 V
[let i 0! c& S: P' z5 |# \7 k$ Q$ r+ [
let sum-money 0
, k0 ]/ p% ?' dwhile[ i < people]$ K9 {% p' C. S3 O( _
[
3 i6 n# h) x# xif( length (item i, t8 J* [1 Q2 `- B- |8 z
[trade-record-all] of customer) > 3 )

- \* T( V  W, Z5 ]/ i# W[
2 Z0 A6 D# o4 F# rset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
( F# W& t2 A9 `/ M]# Z4 C7 X0 ]2 k* k0 ^
]) m- m$ Y2 @) D8 t4 k0 r1 B
let j 0
+ {& q' t. r9 y& llet note 0+ \/ _7 w* J* n
while[ j < people]
; G& b$ n6 d3 Y" {; g[+ C- Z% X* h( Z
if( length (item i2 w, u1 h- N! P$ @+ [
[trade-record-all] of customer) > 3 )

8 D5 [, n. N+ O6 O3 p  K4 p  L[$ u2 C. ~, [) @
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
  R" z* B$ R4 m$ @& R% E: q8 I[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]! l8 O) E: p& j9 T( d2 H
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]6 _: y$ `) g- z6 d( \8 L# W) ?
]8 t5 E  V/ Y' @: d
]$ {) y8 N  @. ?/ v1 r: F
set global-proportion note
% \2 l- C+ v; y]( Q/ E( [" a" Q, k6 i  A
end
7 P9 p6 X+ x. `; K) W5 R/ a8 j6 ^4 O$ F  f
to do-trade
$ c) y: z% D; n2 J2 p$ |/ O3 f& ~;;
这个过程实际上是给双方作出评价的过程9 k! Q' ~8 m$ F- Q3 ~
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
0 u. P2 Y: ]+ d9 @( o% l, Dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
, G1 m2 ?2 G# ]set trade-record-current lput(timer) trade-record-current
! @! _  o9 \. k/ {( ]* H/ z9 y;;
评价时间0 [" A& k, ]; E, d
ask myself [- u5 h8 T9 [* H; V+ ~
update-local-reputation* x8 T) r+ |4 C3 J& p
set trade-record-current lput([local-reputation] of myself) trade-record-current( q7 p9 ^, E' a7 ~0 y
]
1 J0 Q3 P* x' J4 W+ b: L$ l1 m4 n" R5 Pset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
3 u7 h9 l8 \" ]* s;;
将此次交易的记录加入到trade-record-one
9 F! x7 u9 q/ z6 d" z1 r/ B, fset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
# R! Q* H- i* U/ A2 d6 wlet note (item 2 trade-record-current )2 i* J4 f2 r+ H8 _$ h6 g
set trade-record-current* t: f; p4 V& P+ _' L/ r- c* E
(replace-item 2 trade-record-current (item 3 trade-record-current))
7 E1 J4 `, I7 y( z: T
set trade-record-current# t7 w; A, n; r# V! |
(replace-item 3 trade-record-current note)% @+ ?0 p! A* n( t' i( G
+ w; @5 D$ G( P+ O, `! B
) _9 z% N6 e  G6 [- f" s' U
ask customer [% x* r4 y8 Y! ]! e
update-local-reputation
* H: U; @! E+ B# e9 P. L- ^. `set trade-record-current
% L- c. V) Q- J2 n2 g* z; J(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

. R6 y, w* C2 e. u$ F% m2 T]
+ c4 K# r- y9 a' ]6 p  f1 {
7 J1 ^* S# {/ H+ l

2 Q' h) L8 G( @- n$ H8 vset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
0 C( t+ b9 _% s, E+ k: }5 k: q

& M! X* y9 l4 _- R& w# ?7 c$ xset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))  L$ `% [( c! g, D+ U- [  i& L$ S: ?
;;
将此次交易的记录加入到customertrade-record-all% q& j+ v3 Y4 q" g( f0 m. x
end( ^1 W5 B5 y; N/ g* a

2 i; r/ X; s" \5 i/ k9 ^0 @  N1 K- cto update-local-reputation% |. _7 `$ y) T; u& M: s* `
set [trade-record-one-len] of myself length [trade-record-one] of myself; p' s( }' k+ }3 z! L) z

% d9 S. ^  J& e0 F7 J% E( Y( ?% \; L. a2 p- L# {
;;if [trade-record-one-len] of myself > 3
& x+ V9 _" Z% d; u. J: q9 O
update-neighbor-total! z+ o* ?* `5 Q% ?( |
;;
更新邻居节点的数目,在此进行
3 M; i' B3 ~- J( glet i 3" L' @  H) d2 p. n  |+ z) w
let sum-time 0
0 d, b5 {  d. V0 A1 Cwhile[i < [trade-record-one-len] of myself]( S* i8 x3 X7 ~% c' T" L
[
' e) `- h7 _+ ^  m2 P, Rset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )/ ]$ \! L( ]" e
set i
. M! b1 [: a& ?1 z! @2 A; \6 L( i + 1)

7 N8 u8 A0 ^' ]9 i! Z' n0 z- E]
$ {% `" K1 k  e0 g, Alet j 3
4 t7 ^" I) N9 _& s% ~+ G/ L- u1 }let sum-money 0
% v$ [0 h6 n: S$ u, t. Twhile[j < [trade-record-one-len] of myself]) y& a" V1 l- m* S# W5 Z4 v$ M- u
[
. ?+ U, X9 s, X$ a2 z3 mset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
0 O' g% L1 z- M& Y$ s1 p7 s6 Pset j
- \5 }2 L/ `, }: Y# [( j + 1)
- l1 k& d+ z1 \
]8 @! o$ `; D7 a# A- I7 Q" k
let k 3
8 n& U6 z9 q+ J4 @  }# Alet power 0
; I! m' K0 i# d1 e. Mlet local 0
8 Q0 j6 K, N) v! t1 t7 P3 d7 D9 [8 c! Hwhile [k <[trade-record-one-len] of myself]
' S2 Y0 v* {2 M  j6 K7 [- |[
2 Z& ]3 M6 M8 l+ \; cset 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)
5 L( K/ {! j5 M. Wset k (k + 1)
/ |, a; c" k. l]
# R; G) Y( _. h4 J3 Xset [local-reputation] of myself (local)! I( S( l( u9 b" {0 a
end
- M+ c5 Q7 l7 V9 d* x7 T) k* f/ v  S" H3 i3 ]
to update-neighbor-total4 V. `/ C( @; V. l$ y" a, _

( a5 b  }" }! [' O& S% i  d# [if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]( K$ e: f- u# }
, f0 x; B+ C, M. }: R/ z  `

# V3 |2 Z, B5 [( Rend7 j" f: C8 b, n; y5 p; l
5 t5 {( z* t' K! u5 u
to update-credibility-ijl 7 n5 n6 Z+ b# |3 `7 T0 Z

3 t/ k  \" z! S/ P$ N/ Y4 w% C% 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。7 `- B: m) W. P7 V3 V$ C- W
let l 0
7 n' N6 f3 F( j" A1 H% e. y8 h% Awhile[ l < people ]: c5 \( J# m$ Y; C- a9 W
;;
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" v) g6 Z# A1 H% y
[
/ R  S9 W: }) n- Y4 u% D3 ^let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
# Z! {6 C6 P) v, @" A3 N2 uif (trade-record-one-j-l-len > 3)
  G/ _8 u2 v4 ]5 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-one
. v+ A" t( g$ s+ L/ V  flet i 3: a: C' ?( R) L9 a- v6 s* R' X! y
let sum-time 02 ^: _4 F. R; [% r
while[i < trade-record-one-len]
2 T% }" a  M; l  v' {6 H[5 A' d) M5 N3 m
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
6 Q# p; @$ D" k- ^set i9 H. V  r  _7 m3 j4 R; y8 [
( i + 1)

; E" S5 N( S4 q' R]% ?, k" T7 q) u9 B( v
let credibility-i-j-l 09 k; X! w# v% Q9 L* x3 i9 O8 K/ l
;;i
评价(jjl的评价)3 ^" }1 _- O8 w+ C! b! Q: E
let j 3& W+ Q3 S) h; h' D' ]
let k 4
4 t2 }7 k. J- A' _: I# wwhile[j < trade-record-one-len]  U* H: h6 z- Z4 T
[; d6 `% {. }" D* B
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
  v7 R& t2 n: p  F: m# t" Tset 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)/ f4 e' |  j8 P& X& u, `
set j
  v4 S2 Q- I, z4 A5 Z: _( j + 1)

$ A4 H% M2 t% F; y! J" p2 ^1 Q, _6 e]
5 ~# W5 a3 f; z6 ]& \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 ))  D3 f4 l* d' |2 g
: h6 U( ~& x1 y! W" N7 T: e; G8 }

+ v% m( h# k! J0 D) C  W& Jlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
8 J6 g7 a% |( B+ l1 l) o;;
及时更新il的评价质量的评价
: h8 y4 O" p9 {" ?6 s, P  e; V, @set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
3 n" f$ X, v$ |) b1 `set l (l + 1)
! U2 }4 w+ Z8 R. Q: []
2 V0 H' J4 R, `) Zend, |$ d+ I# N6 ^# C

/ \! N+ h/ j' h# s; I8 p! Vto update-credibility-list
8 I( @! }3 B* M, h! \, Mlet i 0
0 v, j  {% x; `8 Z7 r( S! W; m  qwhile[i < people]
' Y3 u2 U; m4 B, ][1 W( ], p" S& H( ^
let j 0
( K5 m1 |8 X5 M9 c0 {let note 0
6 }: g) P8 D& Vlet k 08 `, v& p1 u( Q2 i
;;
计作出过评价的邻居节点的数目! v# F, ~1 u5 @% x7 ^( e' Y
while[j < people]
9 B' i- L/ P3 M# s- Z[' i% L* J) g+ N# M
if (item j( [credibility] of turtle (i + 1)) != -1)
# U) F; e# q9 m$ g. w, c4 X;;
判断是否给本turtle的评价质量做出过评价的节点' m. V5 f( p3 r
[set note (note + item j ([credibility]of turtle (i + 1)))
, ]  ~/ V8 ]' q  u;;*(exp (-(people - 2)))/(people - 2))]
8 v6 o' M6 ^1 M: I4 F1 c  I; m
set k (k + 1)' F- o5 q* R- \3 S: Y' y1 Z9 ^
]! d( N. a$ ?( T0 Z& `
set j (j + 1)
/ @& ]  i' y# i2 e& u]
8 `$ p3 {3 s2 A# @3 Cset note (note *(exp (- (1 / k)))/ k): y7 y6 B7 M- S/ Z; J
set credibility-list (replace-item i credibility-list note)
3 L7 m; k" Y, U+ lset i (i + 1)! i1 O/ p" G- a0 e
]
( ]* }0 b- k. E# O8 G! u1 }' Cend
! p$ B; X3 B; M8 I2 i. i" ~4 _+ U  [) k8 N; G7 S  ?2 o3 Q
to update-global-reputation-list6 t: s7 e8 P- j+ B5 {: y7 {, L
let j 09 m5 P  Y3 ~, B+ I; k2 l% q, C
while[j < people]
+ ?( n* i# z, C6 r3 k9 g5 b[
% B  J3 I; U/ D% b7 ^2 Dlet new 0
8 |; B" p; j- b;;
暂存新的一个全局声誉6 c( X1 `5 b5 l1 Q5 M1 M- Y) R* m8 M
let i 0
1 R! }8 [; W) R5 {) X# Plet sum-money 0
4 u  s! W3 J) K' m* K8 Mlet credibility-money 02 d! t9 U. d- |$ w3 V
while [i < people]3 P) P4 {0 ]4 K( z& y
[( C7 P# e0 U; L  v! t! L9 a
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))5 \( {% P/ L3 d& f  N, F
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) U0 C9 Y; g/ J. E3 E0 I- A" z
set i (i + 1)/ S- x3 R, z+ I7 v
]* J" ^; o6 T" q3 [- g, J  j
let k 0
' e4 v6 s+ H. C( w/ ~let new1 0. \7 J+ G$ L  t0 }* i2 S! Y
while [k < people]+ j4 C, B# `# j
[* w  e$ Y6 B+ u7 E  N
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& p; |5 \" K5 T8 ]* ?" qset k (k + 1)1 r0 O. y/ n4 H9 ^8 l- \8 e. I
]
5 ?- [, q6 A# D* Q6 J+ h1 Dset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
" r+ [5 d/ }& E% K8 {) ~7 gset global-reputation-list (replace-item j global-reputation-list new)
5 ~7 \! @4 o! v$ z- [- |1 F( cset j (j + 1)3 K/ m7 r7 D" @9 D3 ~+ ^( m
]7 [. w, z- ^5 x1 ~1 |9 J
end0 G' L( a4 z' E: L+ i6 x; f

# B# z5 y2 o9 E  I% v5 ]$ I, B) ^0 i
  h% W% M( h: L
% P! D; {* ^5 a; i1 w0 \to get-color. |) ^) f2 Y. I  d

, Z9 k+ }  L+ K$ e, ]set color blue
. @' W) Y  H5 e' v
end
/ K9 u/ _! E) O1 P* A" I( J, |0 L( Z0 \. G, K- C+ E) a, `
to poll-class- \$ t1 q" L  p0 b$ Y* y& \
end
( r3 V6 T/ x2 ~* m( J6 s! r( Q* |$ y2 ?, q3 Q
to setup-plot1& ?; @3 S2 [3 Z" k1 Y& r6 p
. p5 o  ?1 c; _
set-current-plot "Trends-of-Local-reputation"

/ w  ?6 |* o1 R: M. X  k  b8 J$ Q% e: I6 t3 ^# e  ^& V! _9 C8 w; a' M
set-plot-x-range 0 xmax

! L, P8 A) e5 q5 J. d; }, L7 z* H9 [# ?" t) y5 O
set-plot-y-range 0.0 ymax

$ Q0 J" ^0 }* X" R- i/ `5 J+ send
6 x5 V8 G8 r3 `5 J. F" p2 m: `4 M1 e. d  j
to setup-plot2
0 q: W% J& w/ A8 y, `' ^; X. t+ c, o/ B0 [: @6 I
set-current-plot "Trends-of-global-reputation"

4 ]4 C* E$ @5 T! I9 ?
. K' e, d! M( f' u' D7 Eset-plot-x-range 0 xmax

7 W9 t$ L3 H; X0 o+ |# c  q/ v2 }% @* R4 t5 D6 P6 {2 i; a
set-plot-y-range 0.0 ymax

5 {3 J3 B) ~, A# z) t: n6 v% R! send
6 t" [7 r/ w4 Q% P& ^% v; v+ z7 q+ u/ Z/ A- C; b/ Z6 T0 |9 e
to setup-plot3
8 ?6 [& j) M7 V' T7 S
7 ~$ x. _7 ^/ Fset-current-plot "Trends-of-credibility"

! G' h; I' z0 b! U- R7 Y( ~7 J( ?- Y( H8 Y
set-plot-x-range 0 xmax

$ ?- _" K8 o2 u% }* e
# f. v1 n) O, u9 C9 B+ bset-plot-y-range 0.0 ymax
* J$ F- M6 J' A1 m
end
% _  q; t7 A5 Y; a7 X7 L
& z- K+ t! t" a+ A2 T: Yto do-plots0 q) C# k5 h6 t
set-current-plot "Trends-of-Local-reputation"
/ B& Z1 [( ]9 ?7 zset-current-plot-pen "Honest service"
/ [5 X2 M' y/ R4 Oend
9 X" f. s, Q) `' @" F' o! v, q
/ n  V8 D3 a; X9 W/ P[ 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 q  X9 p4 c% ?. r
/ F, @; V: F/ T8 \6 W- k% M9 {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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