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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:# x# b4 T; [' G8 j9 s4 R
to do-business 9 E$ U9 o" a! d
rt random 360
- R7 c, s: f0 c0 K3 h fd 1
5 }# A5 E/ y; W, t3 T$ w* F7 I6 w ifelse(other turtles-here != nobody)[* n( I9 ?' |+ f4 o' B
   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.6 n+ [8 O: R+ _) K! N
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
7 ~- v6 @5 w. D: V6 C   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer* ^5 {8 O  l. h# T
   set [trade-record-one-len] of self length [trade-record-one] of self  d6 h" t8 u# N0 `7 j- D
   set trade-record-current( list (timer) (random money-upper-limit))$ y0 @* w. Y. |2 M8 Q, ]* r+ n) R
: x" ]- s0 z$ V) [* Q# g) D" e
问题的提示如下:
. K' X/ c# c, A& ~) l/ T. o/ C/ u
error while turtle 50 running OF in procedure DO-BUSINESS
8 I1 [/ P! A+ T- _, m  called by procedure GO( f3 c$ D/ y' A4 M
OF expected input to be a turtle agentset or turtle but got NOBODY instead.9 E5 W. }2 _" B* f3 u
(halted running of go)
- _0 I' b6 A: b$ `$ l+ A3 O# `3 G
3 d8 l. {& z8 S6 f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~~
: F2 G! }  }- K  K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
9 r' u! l4 Z3 K0 K7 q( _( V1 oglobals[& M" r* V& C7 |( u. T
xmax# [7 ]. Z! L5 ^* _* X* k
ymax
* l5 z- [- i$ |' _* V  `! ^global-reputation-list
( H- J' j  b' G
" f; z; p3 q# N! s;;
每一个turtle的全局声誉都存在此LIST
  P$ |- B) P6 V( Icredibility-list, K, a( C9 d2 A
;;
每一个turtle的评价可信度
& K' i! i3 v4 jhonest-service
$ C; h8 ^3 p$ W% {/ ?" M& i5 q4 munhonest-service
6 t) m' ^# P  N# A1 W9 ~8 a" Doscillation: g$ p1 a+ U6 e
rand-dynamic
5 ^3 y$ j8 [  x* v, I8 Y& l4 `]4 J( E" ]2 g0 P8 W" J$ ?

* o. H; t5 e* D! I6 s" nturtles-own[
2 |1 I+ o! z9 |5 F5 vtrade-record-all
) G0 @3 H# ~7 v- r+ M5 `% `5 x& a3 I6 S;;a list of lists,
trade-record-one组成$ t+ b+ D4 v/ N+ M) R1 R, T
trade-record-one
1 z$ @& Z% O* r  h* r- y;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录6 ?1 G2 h. {/ j5 B

3 Q1 [5 b2 u/ s# }: b;;[
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]]* v- ?6 h% P9 f5 `
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]
4 Z- R7 M. \% F! f% hcredibility-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
! }9 B. {/ s3 `neighbor-total
! X$ P' }# q3 Y$ {% {- U" m;;
记录该turtle的邻居节点的数目5 E" E5 p1 x% W
trade-time
* ~" W) m- ]( v) \. y5 |;;
当前发生交易的turtle的交易时间
1 ^. P- Y/ v9 ^# Fappraise-give
! ]# O* `2 P  r( @. z' Y;;
当前发生交易时给出的评价+ C! w/ u; Z& ~! f) k# v
appraise-receive( H* Q8 g" k1 m
;;
当前发生交易时收到的评价
# H: M2 ^/ P  m; Y, ]appraise-time8 u' A0 c2 w* w5 E0 q( U
;;
当前发生交易时的评价时间1 e( {% }4 A/ ^
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
8 x* @* G: I( a- Rtrade-times-total
3 i4 O) a# k# U" O! e;;
与当前turtle的交易总次数+ {! n: Y' N( a4 U1 p
trade-money-total
$ @) {- L. \0 {* }# x: f;;
与当前turtle的交易总金额
  e! H: w/ Q  N; g2 M9 K/ u; T6 ylocal-reputation
* s% [% T7 E1 v1 ~) \- O- y6 xglobal-reputation
/ Z( I! p6 V2 B& v5 [credibility; T: F8 n- e( `! j3 C- Z) m5 K5 a
;;
评价可信度,每次交易后都需要更新4 K2 U, A) J% F* M  g3 N( f- `
credibility-all
; w- I2 f" n& H0 Z;;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" g: Z" e4 O) J/ o: h3 z3 R, T- V

. S( f7 L" N" q1 e% c/ v! [" 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- C. Q7 D4 Q; }" _, T3 x
credibility-one5 E4 w3 ~" e, [- L1 U6 i
;;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
& L$ n3 x) c  Y5 n- D, iglobal-proportion/ j8 h- n2 Q$ ]) u* k) d( ]1 v& D  k0 r" D: c
customer3 d) q  L4 |% S& ~
customer-no
% T3 S. {/ g: b2 m; O$ ^6 i3 o3 m, S. Ytrust-ok
4 W2 P$ F1 C' j" w6 N, y8 @$ ~trade-record-one-len;;trade-record-one的长度
% x9 F# X- A2 z]
# P. K; g9 P1 Q: S% E. [- @. r& n$ A
;;setup procedure5 G, a: f: ~5 S4 j$ d# k: C4 N
+ K3 t( r( }2 _# f! t8 I
to setup
) q3 x; {( P. B# z! H2 S! @2 c# \
ca
" M9 G7 B  x: I
( v3 W( V9 ^# Y
initialize-settings
- J1 i( y, |# }5 b/ J

% d  p5 `8 G4 U& @3 ^crt people [setup-turtles]

% m* ~4 D) ^) {6 g% I& M1 _
6 `3 {$ B, v$ a' l7 n) zreset-timer
; y; n" y2 a& h) }( m
; B# d$ e  L  q6 y. L' k8 _1 E8 _( z
poll-class
! g4 z4 t1 b" |. H8 }' H$ x& F
' h& f& @2 I' Q9 j. j3 ]
setup-plots

; J' T: A# K9 F' I9 n6 d+ i8 E$ t5 M6 Y: M! Q7 P; J* M! a( {% w
do-plots
' O, M4 }: X9 C8 s2 U* D- k1 c  u
end0 f$ |! Q5 y* r1 l, H! y$ X1 {
' Z9 e  q/ S: W7 C7 F: Q: U3 b2 S
to initialize-settings
) q3 ~' |5 }+ |9 a2 y( k1 O  ~! E3 H$ B; F4 V
set global-reputation-list []

4 C; h4 _; h: A7 `  `8 V7 _% G0 C! c! G
set credibility-list n-values people [0.5]
5 H- u0 R6 I7 X, l4 H  [
$ t- Q7 ~* i" C
set honest-service 0

7 S" z* Z( n8 T$ T6 s# R6 q5 k
% b0 L4 J" s" f: k7 fset unhonest-service 0
* Q# D0 p8 X5 O: ?9 m

0 o4 R' i8 |/ d; L' L" ~set oscillation 0
7 g  z7 u% t- F
9 u/ W* ~( p& z. l/ V. T
set rand-dynamic 0
6 G! h/ q& s& S0 U% m
end6 O+ |9 ?) A0 M( m* D  s
6 z" M( S; k) L3 P9 F  T' `2 d
to setup-turtles
% \9 `4 O5 V( b6 [( rset shape "person"
/ X8 z6 E/ `1 Y: i, }setxy random-xcor random-ycor: x7 W5 O8 D+ ]
set trade-record-one []* F8 L7 Q- R7 F  B
% t4 p1 w4 x6 m# }* ?
set trade-record-all n-values people [(list (? + 1) 0 0)]
7 L* c: |1 `6 o
3 J( e. a' U  m
set trade-record-current []
8 k1 z2 e: G% F: A# Y9 ^" l4 Fset credibility-receive []5 x. `) @& b$ y/ Y" b3 d+ n
set local-reputation 0.5
. G+ T2 m- `; [' R5 Eset neighbor-total 0* v3 [# h! z% h9 L$ I, N
set trade-times-total 0* L/ f/ u- Z0 B) `% o4 c% w* x
set trade-money-total 0
* c6 ^, b) A: K- k* i  Rset customer nobody
$ i, Q0 ]' R7 ]: b# s# t" Cset credibility-all n-values people [creat-credibility]9 N8 \1 |' C; d, w& M2 R
set credibility n-values people [-1]
/ E6 b( w  U4 U- u$ Wget-color
0 {$ H# @% U6 s: }# [

* x7 ]) S" U" F# s' ?: ~4 xend7 l0 A2 a% k) |+ X7 G8 H7 M" o

( X4 W5 p! C* ?! L% m/ Fto-report creat-credibility
2 P3 k9 Z& C# y/ m* lreport n-values people [0.5]
; m/ C: V7 N  o- O* u$ uend
! x+ c( c7 a) d3 v1 _' y6 j# ^2 X) {- P, ^( c( c) j
to setup-plots
7 b% ^. R, ^: U( ^* _  ~
( v- H$ l( ^8 f* b% w5 M; \set xmax 30

, V- Q6 L! @2 U# }5 y# u' P
3 W1 D) k2 h9 Y7 W6 Kset ymax 1.0

* O1 h" d% e' h1 l0 B5 K, K% R- A: N- _: v( K  G  _, ~" Z3 X( y
clear-all-plots

; p8 f* Z" @7 y8 F# f2 m2 u, Q8 T
8 f& ]) y' o5 k4 ^( `4 v& I. xsetup-plot1
) z! n" a; k  G9 a

8 X$ X. F: C( \/ F6 K4 A& c' Gsetup-plot2
( |& X  C9 L( n! p" J

! o5 N1 v( F0 d0 X3 {& G1 `4 @setup-plot3

$ x2 s, o- x9 I9 y$ k( Y- g4 bend
" b2 _2 q' O& E  W. U
* c6 `- a' r% m;;run time procedures3 g0 D" ?/ G& n# G' G0 F3 i, n

6 j/ k+ U. @7 Q2 K  E6 x- C+ K. uto go
3 g( n, h. y+ `+ A
: a% x0 L0 y3 r0 P% \( \ask turtles [do-business]

! {$ h6 J, \4 Q" O, Rend
( z6 a( L# f  H/ R# p! a: u8 Y# H% t# z$ L
to do-business 9 j" |, t! N  i, x
& K3 K/ Q8 K: ~9 N) R- N$ L6 b
: q" f3 m; x" y1 q
rt random 360
/ I! \7 b+ F( @  h4 x

  s9 s, \0 e: Bfd 1

5 B. P; e9 x- v' T9 F5 E$ U, A6 I3 V8 y; Z
ifelse(other turtles-here != nobody)[
9 ?* T6 @. I9 m& ]& {6 q

. D! S8 _6 ?, R* ^8 M$ l* hset customer one-of other turtles-here

; D6 }/ G/ Q' A8 [
( K- ^% q9 [# C4 O- T, q;; set [customer] of customer myself

; p) o$ z0 Z& y# M( y
% E' H7 C3 Y* r4 t$ E) i( Q) Vset [trade-record-one] of self item (([who] of customer) - 1)! O, W. C$ _+ F! v# Y& M  y& d
[trade-record-all]of self
" ?/ L  T) v( i/ v5 ~& p;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
5 b% t1 D8 h+ r7 P$ v
4 k) I& V* `3 f1 Y+ O4 ?1 C6 m6 U: M
set [trade-record-one] of customer item (([who] of self) - 1); a; {* b2 W1 H0 k/ o: N* S( K
[trade-record-all]of customer
1 t0 W% a& M/ N5 a1 O1 H! F

7 K% M) o1 V3 i4 v5 \5 l, Aset [trade-record-one-len] of self length [trade-record-one] of self
6 N* v+ X0 h6 \! \
0 i. J+ R5 K# w' O& _& }
set trade-record-current( list (timer) (random money-upper-limit))

3 _1 z! W  V; y6 Z( \5 v# l4 w
4 i/ U0 v2 `: L+ ^ask self [do-trust]
4 t3 v, Q! }; s: Y) u8 E0 {;;
先求ij的信任度
0 ?- B- c, V' P. a
$ w0 n, x3 f* Q$ j% v5 vif ([trust-ok] of self)
6 T# i) w/ Z6 I2 G% s' c;;
根据ij的信任度来决定是否与j进行交易[# q: r# L# x' T7 K
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
0 V- Z2 {& X; ~
6 Q2 M# {  T! z2 v[
7 y" o# U8 I8 r4 p( s6 z' W
% J2 H" ]9 }. {
do-trade

( t  S& P2 M5 d! n
7 C/ V  s" i" Xupdate-credibility-ijl
) P6 D9 ]2 u8 M8 ~5 `! A( S
* T2 F7 z6 S1 q2 W  S
update-credibility-list9 R9 e4 C/ W. S1 m/ O; z' a  ?7 ?
# D0 p9 j+ n. a0 d
% R9 ?" u6 l" r
update-global-reputation-list
$ V3 ~( }/ N. P- b4 i

: e4 C# s$ }. Upoll-class
) c9 x2 a% h# A% ]$ s% Q$ E
8 Y% j, o' I* z7 E* ?$ R9 Y
get-color
& k& H; ^/ n: j! `6 {5 g
8 Z5 I7 t7 `8 s7 f4 y; u0 u% g
]]/ n* N. H) ~; }# t) k5 W" g- H) R

, G9 q- Q# W/ g0 ~' D; E;;
如果所得的信任度满足条件,则进行交易- p+ K  e4 L1 [  e! Q6 l
7 {1 S. i3 P; Q3 y4 f; m5 W( R
[
1 X0 w8 t2 X# U  W; r' q' ^, q# B& R$ f

$ L4 P, ^; G- Q, e8 Xrt random 360

  q7 B) X. w- K' z- c2 O1 w
2 a& R2 e4 z. |; I, b5 gfd 1
" x+ S# f" e9 k6 K1 h, [3 U1 Z7 i
8 [3 g$ q$ {8 [0 w6 d6 s
]

$ D3 ^) ^0 B. d& C1 S5 B! L
6 C0 }$ F$ S& j( j$ cend
- y- d0 r  h- \0 N- p+ w8 O

# G, N6 H" t  j' M( C* @to do-trust $ v; R; a' \$ \+ S8 ^) p( O+ t
set trust-ok False9 W1 k8 T' ]0 ^* B

( `, D; f% K' P' }- \# D1 D6 ?

8 n% g$ J1 O8 U; t) ]let max-trade-times 0
; O/ C2 B/ {4 X: I0 J) Fforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
3 ?* |+ m1 P  E- L0 Z+ u+ Mlet max-trade-money 0
7 l& M2 F4 d, W, m2 G7 s( }0 cforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
5 R, U& m. V  G' Elet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
1 G5 z+ Q! H" b" @5 x
2 k# ?9 x# Z( U" `; g1 U

# z( j0 R1 j. \* l+ q+ v8 jget-global-proportion- z  Z" Y3 }) z/ ]2 Y. [% E
let trust-value6 \7 n/ k& ^3 n) @
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)

$ o# H7 @$ J+ |( u: A8 @' d' Bif(trust-value > trade-trust-value)+ W9 s6 x2 _! x$ P. `8 d, a+ i  m5 E
[set trust-ok true]
0 @, K( y+ d' |+ Zend
6 a/ t* G$ t3 U% Z+ ?6 C# {# u5 I. y5 V/ _, p! S
to get-global-proportion
. j. m( N9 G7 i) L0 p* Nifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. s/ i1 d' |/ C! e; `/ |5 R+ `' r3 ?[set global-proportion 0]
( T0 Q# u7 g* U7 j, N[let i 0" t/ M2 Z8 P6 W7 D
let sum-money 06 j, @1 P) Z) }( k% L# H8 Z
while[ i < people]
6 h5 k8 Z( k5 L2 c) V[. W; @/ R1 c. K" e$ s: Q
if( length (item i
6 n; r1 @0 \  d  j[trade-record-all] of customer) > 3 )

5 r* i; g+ {/ a[
8 Q2 y! {; G# W* bset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
$ e7 Q1 I  \$ d8 q' I3 ^$ f]
$ s$ B; g" j: `% k]
, ~# H( o/ h# I- Y4 I/ B: zlet j 0
6 ~5 J) @  V% S" ~let note 0* @0 o7 i( y! k7 `6 ^
while[ j < people]
% o* g0 L. E$ U! G6 W# a[
) y2 V, J6 t! r& Nif( length (item i
9 \+ ~% Y( |$ @$ V[trade-record-all] of customer) > 3 )
1 d( L2 |) P1 l$ _: L& E
[
9 X: A  ]) c3 V6 ?* c4 W' Uifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
$ v0 E3 M$ e$ F/ S9 ^1 W+ e( T[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]( S6 K& u  }1 }, W$ d) S
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]( X( z/ b+ D# P" d4 F* r7 F5 K
]
' S1 w0 U2 b5 P9 `]
. v6 W% e$ o7 z2 r# sset global-proportion note
) h) F' w; k4 P3 h]! g1 y/ M0 p* t
end
$ p: j' Y* G( ?* Z+ v6 N# k/ r: r( @' @
to do-trade
8 w& u' E" ~/ @6 m( h7 l% |;;
这个过程实际上是给双方作出评价的过程: u" {1 ^$ R! K  ^& q
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价% g% ?2 e1 T9 l1 D+ i
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价) b: M" {. f# j) G
set trade-record-current lput(timer) trade-record-current/ C) v6 ~1 }$ ~8 {, q8 J
;;
评价时间
: i+ H1 m" T8 y5 P! V4 }ask myself [2 L+ a% ?# \* D# }4 Z  n
update-local-reputation) V1 k4 H4 l! B; ^! ?  C& Q
set trade-record-current lput([local-reputation] of myself) trade-record-current1 `- w' Q/ G  o( O6 O0 q# U
]
+ {) ^$ A4 v3 k/ kset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
2 s' b( `5 a) V% ^9 n' g;;
将此次交易的记录加入到trade-record-one  l3 f& {% n" y1 I# y
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)1 m) d' ?" E0 {/ o* h  C
let note (item 2 trade-record-current )
5 _6 W* f2 V/ S, ?  ^- p1 Sset trade-record-current9 ]- h7 w+ B$ L+ M* M
(replace-item 2 trade-record-current (item 3 trade-record-current))

* s- b! E" g8 ^. uset trade-record-current5 c; S# \( M. I7 F, f9 S, b# a/ C) n
(replace-item 3 trade-record-current note)
/ L; z) n" V9 y# E( x, a) s1 p' \- L
# X; ?# ^8 }( t* J" F) t0 Y9 f
7 a  A* ?' d( _" X$ U' i3 V" r
ask customer [5 ^8 X" m; T8 W8 h0 ?
update-local-reputation# U2 X: ]) v; Z7 d
set trade-record-current# o, ^/ v8 G: w" w/ O+ j
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

$ o5 T+ f. R, i# @# r]( U- Q6 S% s9 M0 D( q) ^3 F2 @

  l/ w0 d  m' Q$ m$ [

% j0 c4 E& z! j2 j- r8 Tset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
& z5 B- z: E' ?7 {, F9 A" O* y

, H, H* A* ~8 z  e9 }/ sset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
) Z7 n* {) Q# r2 T: N+ M;;
将此次交易的记录加入到customertrade-record-all( a0 \8 w3 _" K- I
end! \, r1 K# ?2 P: t
+ f7 v* Q' a6 U/ N8 i
to update-local-reputation0 O* R& E/ v4 r/ Y4 \
set [trade-record-one-len] of myself length [trade-record-one] of myself
7 Y, Q# {. Y. `0 c
  C; j) L. i# {& Q7 T( Q2 Y1 y2 S) R" }6 K$ P
;;if [trade-record-one-len] of myself > 3

& ]' e) Q2 \+ p+ t/ h0 Wupdate-neighbor-total
* B  D) \5 X" U! t( M% {) w;;
更新邻居节点的数目,在此进行
5 A# U4 O. q1 K) V7 J) r9 N; vlet i 3& R" A9 X; l6 I* I2 e1 t1 u
let sum-time 0
8 S7 V  A; P9 l' ?# ^while[i < [trade-record-one-len] of myself]
, K) |4 j! a' z; v$ q[4 h8 }% H0 y" i% J; J
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )6 B/ H$ {1 m9 x- a+ j: Q8 s  u" e0 L
set i* S- L5 R6 j; i  [; v. F' p
( i + 1)

% i$ V! w' @3 D1 K]
; c) Y, z% Z  jlet j 3
# f% j% z( W! E% Tlet sum-money 0" v2 ?  \! s1 ~& I
while[j < [trade-record-one-len] of myself]; \3 Z3 i% |: s8 l9 R
[4 I8 t9 D1 Z9 L2 J0 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)$ ~9 |- B8 P" B+ W$ P
set j
, u$ F" p9 \: m' }3 y8 f) e( j + 1)
; `' G; i$ ]. R; a
]$ c6 A0 g" I+ m8 p; k
let k 3
4 F6 k$ [/ @$ M# Ulet power 0
, O& w* l8 l8 blet local 0$ E( h) Y  x' C0 S/ @
while [k <[trade-record-one-len] of myself]
! \, Z4 z: z8 J/ g3 m/ J[
- B3 j& w1 }2 N! D4 X$ W# s1 |5 b3 Wset 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) 8 e) k! y( h  S+ G& H$ x* Q
set k (k + 1)
: J6 b. b+ w# n, o  g]& l2 b( S! D! j; S
set [local-reputation] of myself (local)
/ H" A$ r) E* \( aend& b" L) ~, g1 y' J/ T- M
* J6 S6 X4 P& N
to update-neighbor-total0 e: K( G+ O4 Z: D& q) |

+ Z+ n# t0 K) q# o6 a4 K+ u) b$ fif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
2 T" V( y5 j9 r9 a! a0 e# y9 I8 O8 h  {4 Z3 [
7 f' Q/ d4 A" F6 q2 X0 _/ p2 }
end: L0 o" m3 ^, M6 C- i& v
  y) `" i/ L" i, ~; }1 G
to update-credibility-ijl / C( x- y! Q4 `3 q" G. ]/ C

" A  J1 \$ @) ~, _* h; k0 K( u;;
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。, C& k  p; q, d9 o" M6 J" H
let l 06 \2 Z" ~) n1 h6 l' `
while[ l < people ]4 g) G5 p6 |" B: v! ~2 @& ?! T$ 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) q2 A4 F% ]( I" ^6 {: J/ i
[
& [9 w. G$ {# xlet trade-record-one-j-l-len length item l ([trade-record-all] of customer): W7 E3 C0 `  H4 }+ _0 m8 ?+ L
if (trade-record-one-j-l-len > 3)2 P: {6 f1 P: S* U0 l. t7 l6 M
[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
" T1 x/ d+ N4 D3 llet i 3
! s7 ]. L( ?7 d& w, ]let sum-time 0! W! r  d3 J* N3 I
while[i < trade-record-one-len]
. W5 I: Y+ a4 e6 O2 N# ?[/ @5 }0 t& m6 f& S9 T  `
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
+ C( C' ^6 a* e4 {7 \set i  v. V+ N, K* e" z3 o5 x
( i + 1)
& [, o+ D4 y3 D
]9 L% k* y7 I* t! F4 M
let credibility-i-j-l 0+ ]+ T( Y( B# d& T( s4 H
;;i
评价(jjl的评价)
+ f  l$ K- |3 s* f2 `1 Slet j 31 Q: Z9 a: X  I" ?2 b
let k 4
# X0 o- h: V' y( lwhile[j < trade-record-one-len]
5 u0 i( A+ Z, X% a* r[
9 c4 A' i, _# e8 P& g5 dwhile [((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1 c8 }" W8 e8 j9 f$ x! o
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)& {  z$ F/ V# d" ]# q: w
set j
* x* c/ A" Y% [( j + 1)

3 k% b6 H" C2 b& P2 T- t]
& ~- U7 r$ Y! c; f, K! 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 ))
6 J" I# B( `( g! v! d! ~
/ O  V- C7 u4 V4 T% l& x

. a- i5 B6 g) B  X  clet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))3 P7 x$ p. p+ ~) y
;;
及时更新il的评价质量的评价* z6 B1 u2 ?. c1 D( W: O" p* A
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
1 i! x, s5 q4 s+ A' j9 M7 o; Xset l (l + 1)
7 a5 u2 n  R! P2 i& `]
: R! N$ d% \2 U, `5 ?end: b7 b1 q: _7 j7 o3 s  ^: b0 j

1 Y) ?$ g6 l( a. [to update-credibility-list
0 h5 A; ~$ j5 w  e1 e) Ilet i 0
3 x+ L2 Y$ N9 s1 o5 z5 q5 {$ nwhile[i < people]
# j/ ?6 n# C2 p6 A# m' p[, h" A; X" \" X* x% u6 V
let j 0: K3 a6 q8 D; N( U+ b. j
let note 0
* x: K. ]) q2 a% J! Mlet k 0
4 s. v% G- F) z7 T3 g$ B: e;;
计作出过评价的邻居节点的数目+ w9 n- G/ X& b) e
while[j < people]0 J& r# Y+ W; j( T( d7 Q
[' O- A4 r2 A0 n5 I6 k3 g
if (item j( [credibility] of turtle (i + 1)) != -1)
0 P6 O' N% \$ D2 T+ U# s;;
判断是否给本turtle的评价质量做出过评价的节点8 g3 s# I3 W% ]  u- `0 x
[set note (note + item j ([credibility]of turtle (i + 1)))
  m- ]/ n1 `$ T  E+ ]# O3 `;;*(exp (-(people - 2)))/(people - 2))]
  n! Y: ~3 O* `7 Q4 o* v
set k (k + 1)
0 D) {+ O# m. @  q]
, b* H  J& I6 E0 v2 k' O, Nset j (j + 1)& p9 D0 Y1 R$ M( y# R9 b+ F: a
]
4 w0 h/ y3 ~$ \3 K$ ~set note (note *(exp (- (1 / k)))/ k)) G6 X. S# L5 q' _+ d; p% s
set credibility-list (replace-item i credibility-list note): P2 \  e( \2 s' Q4 j  |
set i (i + 1)
5 K" N6 y3 e$ j& ?% Y( y]
& p! X4 B- P- j. rend0 q  p4 l) A7 g& S

& u6 t0 y% x8 A$ ~' E, Z( y# @to update-global-reputation-list; T# h* @9 q) i1 ~
let j 07 N( @1 k) T# v$ D3 H
while[j < people]# y+ g: [# }8 H8 y+ w
[8 O, L. v# U, y: ]
let new 0$ K0 P  J4 v9 W9 J
;;
暂存新的一个全局声誉
: s/ r6 W! c; }4 H2 Slet i 0( |' N3 C( c- }, v( E
let sum-money 0
7 \  b! g7 g8 Rlet credibility-money 04 c# W, [% p* {* S9 D  V
while [i < people]- q$ J; T/ E) m; E$ }" p* p
[
7 I' s! ]5 n& Dset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))4 a+ A9 O8 i+ g/ ~$ u
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))2 B4 Q) d+ P: W! s5 I3 X8 [
set i (i + 1)
8 K9 m6 x6 [( ?3 M' ?2 O/ w7 Q# x5 U]
) y8 G& F# d; H/ H, Dlet k 0
5 M0 K) r) c7 e9 Dlet new1 0
- \! r" h; ?% Z  q! Z# x0 \while [k < people]
9 b2 S& I3 Q7 [3 K1 N0 D  U[+ T/ q) M, T/ T* O4 D6 s- ^5 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)2 Y9 |1 {) m5 E+ G" s6 Q
set k (k + 1)
5 m) a7 {- ]; J8 E8 J( f. `8 M]) w+ r/ ?/ z/ z+ m* a
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) " n6 S! t8 I2 l+ w& q
set global-reputation-list (replace-item j global-reputation-list new)
; `" [5 A: P2 j0 Zset j (j + 1)% M; M- k; L& F7 n
]) {+ J4 D( c" J* j  w3 I
end
/ N+ W5 ~. v7 l5 B
3 i1 S" N4 f* U- t
8 u7 A: D  E2 b0 m- f4 T1 F
+ [9 S; H# N( s* `2 Yto get-color9 C2 F8 L: i. s
) b2 T) W0 }7 \% h
set color blue

: T* L  O& t1 ]8 P! p% cend
( T' X0 b2 O$ d9 T# S. x. A# o2 \/ r5 b, a5 A  ~
to poll-class
" d! F- w7 p5 b, }end
7 J: C) ?# `+ d( j0 |3 r; G
8 t1 U/ j; @  \3 Mto setup-plot16 e8 Z& u+ Q# n/ a- U, v. D/ m

% `7 E3 K/ T  J% ?/ Lset-current-plot "Trends-of-Local-reputation"
6 w% N6 e) z3 E

( d0 E$ h0 R9 u- ^6 Vset-plot-x-range 0 xmax
& ?/ |' L/ ~' k$ ?, [# _
. k% A& _( G" f. c+ g" L
set-plot-y-range 0.0 ymax

+ \* ^: Z  ~" o( h! u4 `7 gend5 z" K6 k/ _$ v8 N
' t& |9 n# ?: g2 @2 ~2 n# C' ?8 y
to setup-plot2
& a+ Y, G- D6 @; M6 X* c5 J/ E! r3 w6 A+ V
set-current-plot "Trends-of-global-reputation"

+ W$ @& e" o: `8 T3 A" J9 c
7 V. R: }% ~. N  O: J3 wset-plot-x-range 0 xmax

$ A+ O) d# S! q, \* x9 e
# ]$ X- ?6 C$ H! H  x* I8 x- Zset-plot-y-range 0.0 ymax
; F. N% l' q# y- l3 j$ C: s
end1 b7 n5 O' n6 R# d7 @, ?% |

3 r3 y" X9 y4 Y" R- |9 Z7 I/ Dto setup-plot3" U/ d7 v8 ?, i; Y8 ?  J% Z

/ ]" ?' U" N0 B8 u# d* Aset-current-plot "Trends-of-credibility"

$ \3 t( ?* f* n4 [: J( n6 u* y" Z6 w: v& L6 ?- d
set-plot-x-range 0 xmax

( `& I% F" [: U" s# ?1 {/ J0 \2 M( g: {
! A9 W( e$ B* T% w. i" ?4 nset-plot-y-range 0.0 ymax
  w- E+ }" W: W& m4 r5 `7 P$ C& {
end% A. d# A0 O) |1 X9 H7 g- e5 q6 [

: b' [; ], s1 N  r& R9 kto do-plots( \; i3 M: ?9 ]& j& G1 Y
set-current-plot "Trends-of-Local-reputation"
& m4 C; r) D4 [: ^set-current-plot-pen "Honest service"
8 V) u2 B( z9 F& l' t+ e1 l. Nend: O9 h5 P) T( \+ o& q
, w8 R+ l- n! _% e9 I3 l/ n
[ 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.( d% c) I; W. c0 R7 p, Z! c, l
& u* N+ O) S' ~. s
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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