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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:9 x$ K0 O, o* p0 x* @7 a" g
to do-business 2 o& u% H; I; T4 r6 |4 O
rt random 360) C" l" q7 T( \, Z" x. ?1 \& t+ L
fd 1
; n/ S! M0 \8 g5 t ifelse(other turtles-here != nobody)[7 Q4 R3 g: W1 r( p5 j
   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.
. \8 f' a# r9 D! y; |% M: z% R+ G% N. S   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    : S6 Z7 V' \) [  f" P! _; @, i
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer0 M4 f% n- b* q( ]2 d
   set [trade-record-one-len] of self length [trade-record-one] of self& p" r4 Q; K) v3 m$ c% v+ O
   set trade-record-current( list (timer) (random money-upper-limit))1 y3 J3 U% l" R& j; v
8 M! M6 L; K/ T5 L4 X% W, l
问题的提示如下:& y7 \. B2 N% O# C6 S
8 Z! ]4 _2 A! r) s$ v5 j
error while turtle 50 running OF in procedure DO-BUSINESS
# B5 m( k1 W# h% ]1 g, h" i) P  called by procedure GO
( W6 H* j" E% m1 [4 t3 O' ?' {OF expected input to be a turtle agentset or turtle but got NOBODY instead.
% n2 y& Z5 G2 ?2 C& L1 M
(halted running of go)* ~! e! ]5 c0 G. H& f1 D+ ]5 ?

! ?1 M( p# S  A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~~! Q7 e$ L% V( D% a0 J+ J
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
* G$ u$ h1 m. v3 `, cglobals[
1 k9 y# Y3 q9 \8 M, ~xmax
% o6 ~& \9 I. D7 K5 B2 Yymax5 \' `2 O) w7 S0 z% l! z/ i  ^
global-reputation-list' u& l3 p1 K7 j7 h" k3 C- ?. S& \& Y

6 j) g: B5 Z) ~  n" P5 {;;
每一个turtle的全局声誉都存在此LIST1 K- U8 d% W) s* u% H
credibility-list- `; U7 r# z8 g
;;
每一个turtle的评价可信度) m- I2 S! }6 M& r/ p2 G- w$ e; H! P
honest-service) k) h: D2 d/ f- r
unhonest-service9 ]6 b+ }& I, i: l
oscillation+ a: H2 U. x" t
rand-dynamic% |* \5 s& I( f/ O
]1 q1 y1 U8 I) ^, \: A

, ^& a& R* e. A% @- ~turtles-own[8 m4 H+ u; V; K2 g
trade-record-all
! e0 Q8 `/ I  E. H1 ?3 b;;a list of lists,
trade-record-one组成3 {- \3 x0 F- t0 `! ^
trade-record-one: u0 I1 [6 [9 n, V1 w
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录1 n7 H1 x5 ~6 ]% V; p' o
. x$ _/ b( g8 Q4 z3 ~2 Z
;;[
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]]
. f) g% X0 T8 e1 e: V* `! }& qtrade-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]1 C' O7 }7 H5 x7 [
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list9 n3 m( D3 F6 M; k
neighbor-total
& ~& s3 O# b5 W;;
记录该turtle的邻居节点的数目6 w+ u9 o1 {& C* ]% w1 W. N
trade-time4 |( x: e. R! U
;;
当前发生交易的turtle的交易时间
1 p  J& n1 w" G( s& @% uappraise-give7 o1 g+ A, s  y) J4 @
;;
当前发生交易时给出的评价$ G3 N. n; E: \4 ~9 F2 y7 w  v6 B
appraise-receive
0 U* x% P1 b8 F0 o9 @4 ^7 v$ F9 H;;
当前发生交易时收到的评价, [8 i( U- y: S, L9 t; j2 }
appraise-time/ D1 C2 O& }: P! o8 g
;;
当前发生交易时的评价时间
3 R0 S$ U0 O/ @$ d8 h  d$ qlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
% Q/ N# ]5 [. R8 L# I8 ?# R. Btrade-times-total
6 j6 A) o) m! g. Y* @/ t& V) {;;
与当前turtle的交易总次数
( O$ [, [6 k2 z. h* [trade-money-total3 p" a) C: `* X& e. H2 q
;;
与当前turtle的交易总金额2 i9 @! Y# H: n& D) p8 A" {
local-reputation0 B; ?( }2 x1 }8 e, f: G! N
global-reputation: p, g8 V" t! d
credibility. v* ]7 H/ e; E) F; i( a
;;
评价可信度,每次交易后都需要更新
! s3 }$ X0 A6 Tcredibility-all
5 s" d' z: D1 G" n;;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- r8 k8 `4 k7 s) I; y5 t2 H( q

9 N/ {* o( E/ R/ j1 C) k;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5: {! ~3 K/ U: r; T7 Z9 _  `
credibility-one0 M& O; r# v4 P9 J3 x
;;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
* p# }# r0 \9 k! J+ Zglobal-proportion
1 x& A& d% {. ?7 b, E% Ocustomer  E8 D5 D/ P, y
customer-no0 p6 Z8 q" [" {: o
trust-ok% ?/ r$ W- }2 g0 q
trade-record-one-len;;trade-record-one的长度5 i! D. r  }% z( E) }. B: J
]
2 P: @+ a* E' Y
9 T! d: u7 t# _: J5 j+ T;;setup procedure+ X$ n/ L& `( q1 h7 s" S

- w3 m% D, y2 M9 Mto setup. w: Y$ a& q) M( [

$ p$ f; f/ Z  n# z+ G0 o+ i+ W5 ?8 oca
7 t$ @1 i$ [0 z1 I3 U: A
' R; D& U+ |4 u& O$ ^
initialize-settings

/ H4 a4 U! B# I7 b) m. l  ?% X- g0 u; V0 N6 m( X* o
crt people [setup-turtles]
9 W" l, N  c1 k- z- N- K8 ~
! m, I7 K- l! `
reset-timer

1 [1 I7 e6 P. e' t/ s# l3 l0 ^& m' ]
poll-class

7 [7 n% u  n' l6 @8 r! z) h. t
0 h5 P1 g+ g' f+ [* P3 [setup-plots
3 N# d1 O* M6 @: v& g+ Z, j
+ _8 i3 O5 G- ^0 V% _: S
do-plots

, Z& N- o8 l* P1 G: Yend
+ g3 b. V% _1 l' p7 _. N/ W2 g  [/ p' u2 p( U  f; ]6 n/ J
to initialize-settings% E# d/ i% P6 Z& z" [

3 {7 g, t5 q* k  `* j, [set global-reputation-list []
( Q4 M( D  j+ `
+ Q5 d2 r. m$ F1 G% x  U1 [
set credibility-list n-values people [0.5]

' v8 z6 T# L4 a& q4 f5 f& Z4 L, @5 B) O4 j
set honest-service 0
( T, ]4 B* v2 O& ?# s

# `! `3 h7 @2 t5 e/ }* dset unhonest-service 0
4 S; Y7 B- H# i2 U# v. O$ q
8 Z( B  v1 m3 J, s; _
set oscillation 0
7 d3 ~2 P% H' P) z

" s* w+ @& u7 Q; D, xset rand-dynamic 0

5 ]. L4 g) o' X3 g. eend! y# {) E! Q% i4 J1 O2 t

0 r& F; U$ C$ j" }to setup-turtles
4 u. C7 a0 Y, ^  Q5 e/ Mset shape "person"
8 t* f! Q5 b% ssetxy random-xcor random-ycor
3 L# ^: V0 j  E8 Q$ K  D( F( |set trade-record-one []
0 j1 w" E  J! X9 A

* K8 J  }+ ^" Y- H. K) m8 c6 Fset trade-record-all n-values people [(list (? + 1) 0 0)]
" s3 n) j8 `! _& F, ^# A2 ]
( X. r  f/ z9 B, S7 Z
set trade-record-current []! K8 D; A8 }8 i/ b
set credibility-receive []
( N" a& W" b; K( o! Hset local-reputation 0.5
4 w( @3 ~9 A( g2 \5 q: }% Wset neighbor-total 0
  O, x. f7 A1 Uset trade-times-total 0) [6 A2 U4 q; G
set trade-money-total 0
6 ~  h* @  M" T, `' q8 t9 eset customer nobody$ [& X, K  J' U" M  O/ _
set credibility-all n-values people [creat-credibility]
; E5 u  k& I% i# u7 }$ F  Wset credibility n-values people [-1]
. l2 Z' b' K* t8 G9 Q3 t/ ^get-color  `" W5 Z* C( H" n% h
& j; [! H6 ~3 N7 d" ]
end
4 C3 i% x8 }9 R% H. e
) I" v+ S& Z  Q3 E+ rto-report creat-credibility$ g! m/ [6 q3 r- B* [$ T
report n-values people [0.5]% v8 ]8 B: ?7 h; R. {
end
; t' C. S0 {$ M% z  l  V
5 t, i* ^) ^% I& ato setup-plots
% h: Z" ?6 x3 w/ c1 }6 ^* r. I; B! X% P: R3 x7 Y7 F' N9 H
set xmax 30

; a1 H) j( Q- v( w- Q& i3 q! U5 ], [8 X+ s! a  O1 R
set ymax 1.0

/ ?. m3 e! g+ J3 Q1 Q* y9 X( W
9 Y! L# X& G; D- \+ Sclear-all-plots

+ L" P! [, N  P2 f5 b! j' M& j2 J/ P/ l. W- j+ I
setup-plot1

5 S9 J) O) b( n. C% n4 d+ |
8 W" @& G  z8 O  V0 r1 {setup-plot2
$ O; N& y$ t) m1 A2 H( V

, q3 K. c8 |: p1 H8 y* dsetup-plot3

8 `! J/ a- b/ k+ |5 X3 Iend
7 A& B2 \  K: D) k4 r# K- b# l5 C$ A% n5 }
;;run time procedures& u0 r5 ]$ }9 `% p6 _' \& J

- E, y# `) v, e9 Y0 C7 cto go
2 M3 l# K# C  ~4 n( A/ \1 `; n9 `9 [- N# W* E
ask turtles [do-business]

+ x$ Y* q* @+ g9 x/ S3 R( gend: h8 E  n% m: [1 V. A
' M+ q) k4 F5 Z
to do-business $ I! |  s" t' M  D. R8 e8 C
  B6 q- b; }( L8 `
! ]* r3 `6 K3 c9 I- w$ p
rt random 360

  f- Z( ~; h: l; a! t$ V4 _, {5 g; n0 u
fd 1
9 M8 B; X4 s8 T1 B+ ?% ~
" i. T* }, ^6 e1 E3 f' W7 {- K
ifelse(other turtles-here != nobody)[

$ c. q3 Z2 Z) E' m0 l5 S' o# S* @+ a3 X( c: S& c9 |6 [0 f" ^
set customer one-of other turtles-here
. |9 ^5 A; y+ G+ b3 W
/ ^5 M1 n6 n0 k9 R8 a% }
;; set [customer] of customer myself

$ p8 O7 r: u. R$ @. j
1 z% H0 o1 t+ c: t/ iset [trade-record-one] of self item (([who] of customer) - 1)
7 U  o7 R$ A+ T8 a4 T[trade-record-all]of self
1 u8 V& K; g" X3 e4 [/ ^;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
0 \/ y6 c$ e6 Z3 k- N
! k$ I% I& b! o2 \) m2 S
set [trade-record-one] of customer item (([who] of self) - 1)# J/ j. Q/ F6 K
[trade-record-all]of customer
  K% F0 T" w+ R! e( c

: t7 m# O* U! j; |# I+ h: }% xset [trade-record-one-len] of self length [trade-record-one] of self

" U" t. }" b) k; [) F7 W4 c* E
5 ~4 {4 e6 o' R; d5 K+ ~set trade-record-current( list (timer) (random money-upper-limit))
3 i/ V( K& @3 F1 P" v5 ~0 K- i! G

: ?& l7 E! q+ n0 E) h4 h, }ask self [do-trust]
9 L) F7 A' N! J) M" m4 K, z  t;;
先求ij的信任度
- X; Y2 S5 F3 p/ h5 H: A0 _' G2 s% S5 E' T$ P  Y
if ([trust-ok] of self)2 S& D' V: b7 i
;;
根据ij的信任度来决定是否与j进行交易[
9 T+ N6 Z: k& E0 e7 o+ m! Mask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself4 L& A0 @" S: C, I9 g$ p( X( ^% e

! q6 |+ ]' H3 `. x" W& U[
  B; U4 V9 Y/ ]

: [4 a# h3 m9 q6 r# q0 Cdo-trade
9 Z4 Z) T: S9 x
  m, n# v5 G/ b; R
update-credibility-ijl

+ T( ]# n+ j# n/ z0 g
- M2 m  t( ~# Z- Xupdate-credibility-list7 q& ~; w- y' ^) z( K$ D; E
5 X# ^7 c! A" L' ?2 C: ^. @; \

" i2 h# F. r! Z/ I& _1 r) Bupdate-global-reputation-list

9 u6 C' v7 `" o. F: G8 l/ P+ ]- k$ f+ i; E
poll-class
; f7 ]$ e$ Q1 ~, x; v, j! i% R
  e9 D! X) ]6 m% ^. i% j$ ?! x' X
get-color
% w" _- Y: M% e4 m% |  f; d  C
) X" U) F  l8 g7 J+ @3 A
]]
5 s) `3 _$ l6 o+ I1 r, F5 u5 [6 W  k
;;
如果所得的信任度满足条件,则进行交易3 I* f# A) B7 S$ y" L
/ K* {8 D( q2 V& ~
[

' Z3 j+ R: r3 g9 \. p. @3 W! ]  A8 {, N, U' v( R% m" s' U# M
rt random 360

" X7 E$ D9 o  W; A5 ]+ P% ^& S2 H( [$ r6 G% w& S0 t( H# f, s6 ~8 v
fd 1
9 L: {4 i& p5 J
7 C. q4 Z" c! w
]

5 P3 K2 K+ D  M5 V: F
/ C! F9 @5 n8 L& ~( x% |end

6 u! p/ A- e' F+ Y1 Z
! Q4 H! S4 _% h& V3 C7 v  jto do-trust - G8 L  I4 q1 W8 A
set trust-ok False. F( {- O# V' z4 N6 l* u' ^
& ?1 |6 Y  Z5 m2 }+ i" F6 ^

; S# F; B  o4 t6 e/ ?" l* wlet max-trade-times 0
* m! M9 \" H, Q/ z: N' Uforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
/ n- b; R$ W" clet max-trade-money 0
. `, K# w" U3 L# K* p7 p8 nforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]3 I9 v( X2 o( C' S4 g  z
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
8 y2 ^( l8 T* t- T$ @& e5 [
: L: ~# K" K# X$ l. _  ]

6 h0 m# t: s, |7 |3 `, n2 tget-global-proportion) X; y. P$ X0 G5 d# L3 ^
let trust-value6 q  y$ d' W5 ~' `; {$ a' r
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)

. z7 E6 X/ L& S, \/ ^4 `if(trust-value > trade-trust-value)& D$ k( j3 v7 f0 s) Y
[set trust-ok true]" ], L* G' z' z; ^# c
end: X2 E$ f5 k$ T; |% ]5 @

* O* I; j3 @% N% q& Lto get-global-proportion6 q. V( A; L  U2 s7 r
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
; I4 f; D# {- {$ C) Z  a[set global-proportion 0]
6 }4 r3 K+ f, W1 b[let i 0
: L% @4 u/ T& D. x( s% ~& G; Hlet sum-money 0
& g+ A( c; d, a; \* k6 `0 uwhile[ i < people]6 y9 ]9 k, I; z
[6 h" v- p* l- t+ ^% b( F
if( length (item i
- G4 X" Q4 \. X* w0 r9 a$ |4 n[trade-record-all] of customer) > 3 )

! x( n. o3 w% s9 M7 X! l6 g[( Y( T8 y, r) i$ p% O7 `
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))3 E1 A" {$ t; w# w; {9 {
]" B; N/ H: z6 V* s
]9 {& o" ?' \/ R" J, }
let j 0
0 K, q) `2 ?9 U6 Zlet note 07 Q1 g9 [* i2 N% n1 q* x
while[ j < people]
" u6 U/ o7 n: B: }  N1 H9 C[
9 b. O# s, j6 R+ n8 S$ p, O4 K; vif( length (item i
! j1 t9 w; e! K2 U- g) v5 _[trade-record-all] of customer) > 3 )

8 @* @# Y6 a8 f. J+ C2 H6 @[+ R% `2 e+ q* t4 [. c( n
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 i+ m( L( w/ L; Q( f[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
' t. x) V! Z6 A! n4 f' H[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
7 |% m# q8 X! m0 B' i" e]0 x6 b; v* D5 ~( j' D% [8 z2 ^
]
1 D& Q5 S& K+ e4 ~set global-proportion note
3 n& u( n9 E: _  m]1 U% K. n, k, n! M
end
9 N; L" I+ {( X. j$ u- D3 }: x$ S7 G, e
to do-trade8 \" j6 k/ @7 E/ L5 L8 G
;;
这个过程实际上是给双方作出评价的过程! l* L5 W  F9 l" g
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
- `0 c) W% u' Nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
& o1 i% s- T$ J- cset trade-record-current lput(timer) trade-record-current- k+ U" @& ~2 Y% w- n
;;
评价时间
7 `( ^8 _  t6 V: Oask myself [
4 u5 L) `) Q! x2 K* Zupdate-local-reputation# k' P. B3 ]+ l! f
set trade-record-current lput([local-reputation] of myself) trade-record-current
" F1 ^8 M" a# R2 Z4 V  C8 z- `1 J]
. g1 W4 j/ \6 J" Kset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself  o6 r8 i; B9 C6 V0 A+ w
;;
将此次交易的记录加入到trade-record-one
1 f8 q/ f. v; O' d$ Aset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)( ?- q9 |. K8 ]3 k* W( J
let note (item 2 trade-record-current )
/ q+ e1 W& K! L. g1 X7 Aset trade-record-current* k8 k' O9 L. h! j: K+ t
(replace-item 2 trade-record-current (item 3 trade-record-current))

5 {3 D4 O4 X1 W+ ~% \0 _  xset trade-record-current
; h) x, @$ p* W2 E: R" X6 ?(replace-item 3 trade-record-current note)
) A2 V+ Y* L$ |" o
3 Y! y6 z$ ^4 L; P  o" p* Y
4 ^( n8 E7 ]+ k6 I+ f& t
ask customer [- y6 h+ h6 O/ F# o8 f
update-local-reputation
9 o* K8 \+ U2 P3 C, jset trade-record-current
# M& F9 a( A$ z( I5 h(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
8 P6 K( Y9 K! P2 q$ x1 o
]
/ M. l, d' f- q
& U+ k+ J, ?8 a9 I
; r& z+ Q0 }: e9 k* }
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer; U1 P! y; u- h" ^; F# q4 g
5 i* R& V8 P9 x& l
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))/ d" {0 r+ I- F( e% @2 z
;;
将此次交易的记录加入到customertrade-record-all9 `, j6 r# i9 u, w
end. ^! c0 t0 {& d0 W1 y  K5 T

( s& ?1 M+ G6 _6 s$ u8 n# Kto update-local-reputation
* J- z! D$ f# _0 K7 _9 Lset [trade-record-one-len] of myself length [trade-record-one] of myself
" Y" x' n2 X5 Y8 K9 i" P' g0 F
+ J9 P# I; U% W  |  w; i: |
( w* b" c. r- u4 T# p3 E;;if [trade-record-one-len] of myself > 3

/ H; z9 \1 L2 S' Jupdate-neighbor-total
# C8 I1 u. a" F' L" j/ {/ x;;
更新邻居节点的数目,在此进行( T' k) |7 @; f5 ~& H; H5 A
let i 3
% n1 _9 p) \) M* s" [let sum-time 0
, _9 U( H5 ?$ n  E- Vwhile[i < [trade-record-one-len] of myself]8 F7 o$ k  ]1 W8 ?: a2 i2 Q% O
[/ x, C* g9 a; X# f) {
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )0 u0 o0 _4 p9 q0 a% \/ ~7 G7 k
set i
; G' w! |# G* Q( m- Z( i + 1)

3 f$ w4 A' W4 D  g]
% ], _) ?; M" a% W# j7 }let j 3
6 E: ?) d% _5 I# M. B! E7 P" slet sum-money 0) d6 j9 R/ Y2 F) a5 i, ~( G0 O
while[j < [trade-record-one-len] of myself]
- f1 X: @7 L; S; o! j[
& ^  W5 @9 L: K9 {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)
: Q* v: V3 y1 W( |7 D8 b6 Rset j
5 i, J: K. P$ p) u( V8 W( j + 1)
& D: m; }! ~& S, U' K8 t" m7 w2 d- j
]" ?" L+ u6 i/ g/ _( k6 Q( {
let k 3
7 ]% i8 z8 p/ p' ?let power 0% @$ J+ u8 ?; u. J/ s- m3 D4 |
let local 00 G  o: E  f9 p" I# C% y' \" x5 j
while [k <[trade-record-one-len] of myself]
, g5 }1 w  H* ], A[5 K1 ]' C7 J) @
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)
- ^) @9 a! J1 R; H( sset k (k + 1)3 f9 U# m+ [) q8 G* T0 E
]# A7 I- d. F1 K+ ~
set [local-reputation] of myself (local): S# l+ I1 |1 Q  W4 u
end
  i! H; f/ V5 U/ m6 c2 {. c8 ?: E% K" _: s
to update-neighbor-total
! [$ n! F5 u' A$ ?) C% m! s4 M- V  z: a- V  I
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]* o6 I- P' A! r* W1 N
/ [+ U# r- y" y
# I( F( C0 `; M. _; R  e+ ^# E
end
: B! H; N) Y) b0 K% J2 U& o- j7 w8 ~0 P  h
to update-credibility-ijl : z3 t- O  S$ C, N. {+ O' z: t
+ E* |2 Q6 z; L  A, `( M0 V
;;
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。/ s& S) Q9 {8 y7 m( v% ~
let l 0
; f3 `- j2 }6 i! f9 Hwhile[ l < people ]
$ E( W3 k, h2 h. q7 r) ^;;
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2 a& ~7 J% F  s2 ?, b
[
. N7 {1 J9 j; M- J% G1 Dlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
3 e% |; g) Y0 f6 W$ H1 ~+ Xif (trade-record-one-j-l-len > 3)/ e* W7 a& Q4 v) ?" 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
) t2 S: P% r4 W! C4 n- Flet i 30 X5 i8 ]# [8 ?' G" ]: Y* Y
let sum-time 08 N* {! R  j6 o& J5 h* O
while[i < trade-record-one-len]
, ^! N% f# {. e/ }! S" }" x6 }: S2 @: u[7 M, f& J6 ?& N" l0 b  z9 A0 }
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )% O; g7 s) Y; ?2 N7 h( z3 G
set i# g. n* |* p! E: C  b6 X
( i + 1)
+ b6 [& V) N$ R7 V6 G; A) f
]
. ~: R6 _# `3 i1 q- Q8 S* Mlet credibility-i-j-l 0
8 N3 Z% B7 T5 S3 N; ^9 ?;;i
评价(jjl的评价)) r' I  D1 ~: K- p. B9 Q" ~
let j 3
9 a* ~$ f9 Z. a( x7 glet k 4# W5 w* W- b5 R. b5 c
while[j < trade-record-one-len]
. n' B: V- S5 @2 q- x[* ^) U& S+ Q$ l; {" i% T& ?% }
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
: W! T1 A; A" v! {2 t/ N0 rset 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)* c! o% A( E$ v' B3 Y6 j
set j  t; v  A/ c2 S+ e# H" S
( j + 1)
8 S0 V; @* ]+ c$ R2 c- {& }
]" V( ^2 g5 N2 H8 R; Y3 o9 u: d
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$ D  U! b/ N! m4 N3 j; c

9 w8 D! l- ^/ W- O6 t

% k& m8 h4 m: |/ b/ {let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
/ |' x* c/ V1 I6 Q: v2 n# H. {8 I;;
及时更新il的评价质量的评价- Y0 h; Q- c& S$ I; v1 ^3 W
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]8 `& m, @: m" I* Q9 M
set l (l + 1)
" F2 O$ `! D2 E/ \]
! U" ~$ a2 u+ Dend
7 W3 `! i- y' d5 n& O
9 p% T6 W7 f9 X+ B( U+ t$ H9 sto update-credibility-list
& s6 k! h, P- h7 I# o1 Wlet i 0
& o* q( }9 v) Wwhile[i < people]
/ `) @$ N  n+ Y0 n) F; R9 `[3 {) e5 D: E- @8 e
let j 0
$ ]* T4 o" g+ `) X, J! K2 J4 a9 I5 Ylet note 0& K& ~! f7 ?( R; c- D) z" p
let k 0
+ _, z) t" J+ ^;;
计作出过评价的邻居节点的数目3 E/ a! [1 X7 M! E
while[j < people]
5 q4 V7 C! y3 p) _, J[2 b* O8 H% i5 X- \/ n
if (item j( [credibility] of turtle (i + 1)) != -1)# b" Y  E$ Z0 ~) F! d; i
;;
判断是否给本turtle的评价质量做出过评价的节点1 x/ L$ e" w6 W
[set note (note + item j ([credibility]of turtle (i + 1)))
' j; o! D' r; P$ e;;*(exp (-(people - 2)))/(people - 2))]

- J2 s. z; Y2 S/ ~5 uset k (k + 1)
+ L  D6 x4 I# q* M6 V]
0 X2 b5 I; i1 y/ S* j3 w( {! \% Zset j (j + 1)  o$ j9 e4 f4 {) N) ~
]
4 v; ?  a$ b6 Wset note (note *(exp (- (1 / k)))/ k)& z# R0 q7 d. y0 @$ ]7 }* O# ]
set credibility-list (replace-item i credibility-list note)$ [" f+ @% a+ z7 |
set i (i + 1)
9 S6 z' ~, s: L6 D3 G+ C]
* I, }' L+ i2 rend
; K, ^- ]4 d( L* Z# M: D2 q
4 X/ O, q: X( }$ f5 J6 Gto update-global-reputation-list
2 v) B7 S; A( q% mlet j 0% [: f/ T6 I4 h7 v! r: h( C
while[j < people]
9 F4 y7 k8 q& \* f0 R[
! p0 ^8 N+ M# g8 y( ]6 ?: Mlet new 0
9 }  A3 T7 `' M1 ?" ?, @, z2 F! z;;
暂存新的一个全局声誉* o: c: k* E1 g$ q7 [
let i 0! [1 C2 x8 ~! A% D# P7 ?6 x
let sum-money 0( H, `; N8 G2 b2 S8 Z5 `6 M
let credibility-money 04 F% W9 k6 }4 b8 y, ^" n$ D
while [i < people]% H* y  f) G4 L7 B. i/ b
[
& k: p" z3 v; U1 }  m* a$ F+ \2 Eset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
4 E: b5 [3 w" Rset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))  S) b: Y3 E4 {' v" l# ~9 [
set i (i + 1)4 {9 [, x" R. m# m$ r
]* y) x0 \8 r$ U1 n
let k 0
+ i6 _& {$ l/ z, O8 M5 p4 dlet new1 0% ?' L% o! i1 {3 }! ?
while [k < people]! W( e- T. @' }
[$ o! r1 r# }$ W9 ~+ S7 d5 G
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)
0 V4 b* Z( Q5 V4 ?3 k& g. }. w) ?set k (k + 1)1 ?; {8 H& K" ]4 x
]/ @$ z+ j8 s1 C- r5 S7 t
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ( [# d$ ~+ ~/ J8 |# u7 V
set global-reputation-list (replace-item j global-reputation-list new)' }: E2 O& V. \
set j (j + 1)
' x! |; u, Q* [9 S( L8 g. U9 z]" i: M6 _/ x, ], q
end! |. |+ e/ T$ \1 }8 k  Z
- U1 i% {+ J+ D0 G2 a7 n
8 K" L. E# W2 q+ ^2 o1 M
% C( S; F( @) d! c( l4 j
to get-color
3 K. ]7 w6 @. {
! ]) X2 u6 ~( eset color blue

+ @1 C- p; w5 B  N( ]8 w% h3 q0 Send
! {( l5 R' s: a8 _
* ]7 V$ ~5 r: e3 I1 c7 D' o2 jto poll-class
" `7 j  I: E0 gend
. e, b$ B, f8 b( ~' b' \8 @  S% L5 w) x3 N
to setup-plot16 }; q9 ~* o$ I/ c0 F+ ?

! q3 Z: D2 H& v, u+ gset-current-plot "Trends-of-Local-reputation"

1 I6 H  p2 h& Z$ |
& o4 }9 b. w! U$ t: nset-plot-x-range 0 xmax

8 z( e. w0 F# J2 n. }4 U
: O) O$ H) M( ^5 |" v$ B9 o& A. Iset-plot-y-range 0.0 ymax
* L, i  q+ k# x8 E9 n
end. x. t" \9 P$ {, [$ v# v, ~) i

& j7 W. h$ |7 V0 }% |  eto setup-plot2
# R" x3 O2 f  H; {0 f  K. U& \+ ~% Q' Q( I7 F/ g  M5 p" d
set-current-plot "Trends-of-global-reputation"
. r/ s( l, C2 M% k. v0 I9 ?
! U7 p9 f' W+ e6 j
set-plot-x-range 0 xmax

- ]4 u8 `* v$ a9 L" T* Q, w. z$ v, i" K% W" _$ n
set-plot-y-range 0.0 ymax

$ I: l( c4 ~) d) nend
1 X: q2 Q: x4 N5 g* A+ F2 j% D3 e6 e( @
to setup-plot3
# W  @+ S) \( A5 Y5 L3 n9 `; Q; T6 ~  m! l' ~" d1 ?$ b
set-current-plot "Trends-of-credibility"

/ Y9 [9 [1 M' c5 `
" n: |3 g. H$ f: V  |set-plot-x-range 0 xmax
" z; n# [6 B+ K' k' [) Y' l4 M( ?$ l
1 n$ Q/ t! j2 J. s
set-plot-y-range 0.0 ymax

- N) w. I- r* L! R8 ~end: N* l; s" i/ a, y4 w" g8 L
' W( Y2 U  q4 h# I$ L$ ^, l. A
to do-plots* j1 m) [- m/ b# ]: @/ Y1 Z
set-current-plot "Trends-of-Local-reputation"4 {& I3 _9 T8 u2 H6 T  z3 h8 W  I3 J
set-current-plot-pen "Honest service"
, E8 J* s* Q" q2 Rend+ x% T$ Z( N9 @5 ^  ]
& N0 ]# l* u7 v
[ 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.
0 P5 B% j! _6 ~& n4 w
5 ^5 ]& n  [# R2 c; r  ^# E1 o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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