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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:3 P6 B. ~6 @4 r; _$ _9 U7 ]
to do-business
9 T+ M0 z- f- e rt random 360! o2 K9 m7 ~( ~: Y9 d* c( \  u, |  W
fd 1/ `" X$ I9 P: S' }% M1 S7 q  j
ifelse(other turtles-here != nobody)[) O" ?( j& _, @, g/ C8 `
   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.
: m/ B( x/ g6 d5 A# O   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
, v4 S& S0 @1 a- S) K   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
2 y2 A# {. }9 I( u- G. I7 S9 O   set [trade-record-one-len] of self length [trade-record-one] of self4 g3 d+ K5 t5 h1 i* N
   set trade-record-current( list (timer) (random money-upper-limit))" e& ]" S( _# k
* k  P9 T+ y' N+ y# F8 v' q
问题的提示如下:& j' O6 ~) y. Y" x( w4 [- z
  C, e1 Z- k. a3 H. P
error while turtle 50 running OF in procedure DO-BUSINESS
4 r( O$ q# b) S$ U; U  called by procedure GO* Q- J; F- K' ~  |5 h
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
' ]3 C6 H1 E' l9 {
(halted running of go)
( u7 d# u$ B4 j
( w8 B: j0 x/ P+ C3 i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~~
4 H% D$ @# h: 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
; O5 d( s& y8 V4 [/ @globals[
+ b/ y7 n3 ^* e, M+ |+ g, vxmax
- p/ j2 q/ {- G; K) Zymax$ i( {/ ~1 i/ h8 ~- T
global-reputation-list
" p8 S" x, D' b! z* M4 {" y) e$ s0 Z0 `; P$ a. z/ g2 `4 I
;;
每一个turtle的全局声誉都存在此LIST- Q, `/ y2 s: x) n
credibility-list9 X- P1 h2 Y8 b/ m
;;
每一个turtle的评价可信度* g# {" u0 T  w6 t7 Z' w
honest-service
5 L; j6 Z8 `1 l; C0 c( `unhonest-service! o3 ^) F: E; l& Z: q* o3 Q- |
oscillation
! j' T& [" h5 _! o. D4 J1 Yrand-dynamic
) `5 z, ~$ t4 v4 B/ T4 l6 {6 v]2 J( L, o% {5 H+ H
. X! z. Z: \  i& V( s* c; P/ `6 w
turtles-own[, T' y7 A' W1 Q0 s+ O) Q; k6 J3 h
trade-record-all
0 D# a8 V* ?" e2 ?  Z+ g' d;;a list of lists,
trade-record-one组成: J: W" p2 R- G( ]# m; ?+ Z
trade-record-one9 _" i- A0 y: q* i
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
% v9 j, }" J* e( A4 k1 v7 ~/ D3 T4 J2 A# g& v( 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]]' _, Y) |6 k$ f
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]
3 \: u# i" u# U) t) ^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list1 o1 X5 C2 \' t# S
neighbor-total
* O" x9 d2 `" |/ J;;
记录该turtle的邻居节点的数目2 d2 `: Z; G# ~# Z/ V
trade-time% x8 ^) M" d6 R9 W+ l  z  P
;;
当前发生交易的turtle的交易时间
6 J: Y$ E' R& q" S- ~! Iappraise-give" z& m& u$ P- U
;;
当前发生交易时给出的评价
$ ?9 `- o7 R6 H5 ]2 n* oappraise-receive4 y7 o) g7 ?; Z# B  D' _) U& i
;;
当前发生交易时收到的评价# N% h& {% l  S/ W
appraise-time
8 \! @1 Q8 }% z;;
当前发生交易时的评价时间4 D/ F- s- ?" E) M' a- z
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
) c6 [! S* e4 p7 ctrade-times-total! j# I: O& [! f3 \# ]; _$ u
;;
与当前turtle的交易总次数% A7 H- ?1 Q- |4 _1 X1 j; o
trade-money-total! m9 a$ \  b% T! P0 G$ I1 U
;;
与当前turtle的交易总金额9 ~9 j4 g( x+ u. w9 K
local-reputation
- v  N+ T/ a. J3 }, M( a4 C! Iglobal-reputation4 ?7 @! S) Y4 G. e1 h( i, s' r% _
credibility
3 Z1 n8 \$ Q' i5 p;;
评价可信度,每次交易后都需要更新
( \2 K. Y' z8 kcredibility-all. z; A4 V8 b) D5 B
;;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& y; t$ ?+ P  \

7 o9 z6 e5 ^: }8 b+ s8 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
2 c4 t- e3 ]) {. Z. s1 U! \4 jcredibility-one' k$ B# M# A1 D& ^& C8 {
;;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
! q. Q* D+ Y) y. e- ]" mglobal-proportion
& N2 J0 r4 C: X. D4 `customer
) p+ O% v- ?/ |customer-no0 q% [+ A% U) U0 I7 N3 k# P
trust-ok0 T2 Y2 y5 M- s" d7 ~/ d" n
trade-record-one-len;;trade-record-one的长度
0 h" {! L3 s* P# y' g$ z]
0 H- Q; Q4 ?) N2 i2 B# W( n; p0 S# n& J  H
;;setup procedure
8 C9 X! I8 j: F0 J  M2 _
& s# j4 h8 c9 ?$ q% G" o- E9 V; |to setup
9 v: g$ t6 n' F7 B3 ~
9 L& z/ x) u8 V3 d" j' dca
. }: y0 }5 Q) c6 l
( ^8 e. n# S1 J% W
initialize-settings

, [% O# k# o% |0 J/ v/ n* ~  t; d9 V
) R3 S) x9 T0 ]" \9 G+ m8 F' [% Fcrt people [setup-turtles]
3 W2 k$ i3 a9 s5 m% p
7 Q$ \' s+ _9 g- t: m
reset-timer

% Q7 m7 w  \1 P, _  |
) w% S* H1 h6 p  v4 k5 kpoll-class

2 n, Y6 G/ W8 T; @# a
: R0 }+ o# u, W7 }: G/ Jsetup-plots

# T% {9 a* s) l, @: g3 U) u/ o; k/ X% ~+ a' B
do-plots
, R/ {5 `8 @7 @: L4 @+ R$ z; ]
end  w. @5 m+ u1 K
5 M0 w4 Q; _6 B' R8 ^( r
to initialize-settings, \; ^& B4 z' O) m
, e& _7 t0 M3 }% Y5 u
set global-reputation-list []
: [) ?5 P! j" V

) Y4 M! p& v# zset credibility-list n-values people [0.5]
5 N$ [  g6 N  t1 n) o
1 A  l" P* g, Z
set honest-service 0

8 ~7 ~  y) ]0 [  ?4 G' H- ^: s$ B1 f1 d, E: k! z- n
set unhonest-service 0
+ F3 Z: V0 a+ I  a

* s  g5 c7 c* V; mset oscillation 0

5 }% X' Z/ q5 O! {6 b1 u* |/ E% a" \& n* i* a% L% [$ J
set rand-dynamic 0

0 m2 J1 M$ }$ z" D; |* \5 X, `end2 z1 b2 h6 ~1 U2 m/ X6 g" Y
' `) ~( B' m0 ?4 U* ^4 ?- `4 U2 G! W
to setup-turtles ! b4 q4 v/ }6 ~# C1 s9 l
set shape "person"
7 H" E! ~6 _0 Z" w0 z1 `( U  esetxy random-xcor random-ycor2 m. p* ~4 E& Y6 y. f7 _# }; Q
set trade-record-one []
: ^) _% b1 M2 c" O
- U, `, \" S' j5 U
set trade-record-all n-values people [(list (? + 1) 0 0)]
1 z% L/ q6 K! M8 Q# O# {

6 V# g1 [9 R. }& ~set trade-record-current []
' r# @) b4 L/ D, S( n& ^set credibility-receive []
% o6 A: O( }% p! l- T1 @set local-reputation 0.5
3 Z% n9 x$ i7 ^. g! o" w" uset neighbor-total 06 @' l$ P+ `" I) C; W/ I. P1 H
set trade-times-total 0- F: s, B! A# t! b" V
set trade-money-total 0
5 r. v" h: ]) H: Wset customer nobody5 l" H1 w6 A7 o; F# E6 W$ p
set credibility-all n-values people [creat-credibility]
) w4 \/ t, [9 c# b# `; Sset credibility n-values people [-1]
5 W, R+ T* }* V! \2 h$ cget-color
6 s4 K+ F5 }- X: g$ W
4 L) b6 m1 O7 w5 l% [5 O/ f7 c: k
end
7 V% {) t) B# y2 |
1 P* r0 C0 G2 S! zto-report creat-credibility
( h' I6 J3 y. ?) ~4 H$ f+ freport n-values people [0.5]7 F+ M/ T: V) ~" D9 J- t0 L( j
end
& [' I9 X* H/ D- X
9 [0 y3 \5 g4 ato setup-plots/ `3 K: q8 w" k" D
' g% D, G: w+ O* {$ l" M9 [& k
set xmax 30
: ?, Z9 [5 w* f, `' V
* p2 F  N, t$ l9 A# y; W% D2 |
set ymax 1.0
  _! u& y/ L3 X

7 [; L) [# ^2 w( n& O6 fclear-all-plots
0 n* m0 [% U' s+ v  [6 o9 b
$ D- d7 x1 n& g1 c: a2 _! p5 `2 l& |
setup-plot1
6 H0 T3 T& c' o. [9 l1 J
& Y- x- p! U. W8 t, V( Y7 g
setup-plot2
" U% J1 i/ J! @. _& r3 `8 `/ e( j7 t

4 V; [% F6 C+ Ssetup-plot3
# i9 [7 D- m2 `
end
' u$ c  r+ N+ U% n  ^8 N* F$ s' O' H& e& F: P6 L
;;run time procedures% [) q0 o1 y- x- X9 A% i! C
0 W  ^/ e: k0 [
to go
3 n$ x8 ^5 e( V& `
# [# }( T) l! u; ?3 X. W4 Mask turtles [do-business]

, d8 B/ l( a, |- Eend2 K# v  V6 X! u/ Y
) x: T7 U! H7 t3 C( X, k3 p: w
to do-business . m3 c4 Q0 L  j4 e1 a1 v+ T+ z: N

/ s+ c3 t$ g# ~
; k' r  J) ?+ Y; S: u1 e6 u2 c; }rt random 360

' X: l$ O9 R+ ]) c8 i5 m- f2 `4 J$ ]2 S9 ^# S" O( s' Y
fd 1
% f. S0 D/ ]( d1 t* L6 ~

( s& P& V% l% Z6 R2 yifelse(other turtles-here != nobody)[

& o2 a6 M0 v- y! p, O4 W& N" v! W( C. C2 p: R* N$ S& e  W- g) v: g
set customer one-of other turtles-here
6 h! f1 n3 T& N  c2 c; H

& d" j3 n. _1 D3 D& J/ V;; set [customer] of customer myself

8 W6 L( l+ A4 z+ u
9 A) P2 y0 F- o. l/ Uset [trade-record-one] of self item (([who] of customer) - 1)- B/ v& j' d$ C, N" _
[trade-record-all]of self
# Z: b9 n0 H* f4 ?! J;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

- W* M0 U5 p6 d
6 O6 K* l/ D8 T5 Fset [trade-record-one] of customer item (([who] of self) - 1): k7 C1 j% d- l1 l5 p2 A# b% `2 r
[trade-record-all]of customer

! f9 ~. M# N8 O
" B0 }8 g4 o2 wset [trade-record-one-len] of self length [trade-record-one] of self
+ N! S6 X% L# v6 R8 @3 U
$ q2 X% A/ d1 k. c/ ]/ `
set trade-record-current( list (timer) (random money-upper-limit))

8 C9 `( C& e6 Z# o6 Y' y4 W
; N' ]/ R0 d  w. [1 Oask self [do-trust]
5 M/ W3 i0 }) `! _2 |( J- m;;
先求ij的信任度
* Y1 J  b1 V; z& x* V5 v7 i% \0 t' C3 b9 c
if ([trust-ok] of self)6 w" e- s: \* A: J
;;
根据ij的信任度来决定是否与j进行交易[
0 K1 z0 K9 \, i; q$ Kask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
6 k- V* d) j  H& Q& g2 K# P( g. k; A! B; e: y
[
+ p2 r3 I3 {- i% \+ w; ?

+ _' y" @" x& Ido-trade
3 u8 A6 O- x8 `7 j4 b$ W$ F% d

/ Z" P  u1 y) g# Supdate-credibility-ijl
8 b. F8 n0 R3 q. a8 [& _# L% \

  L% W& ~- M/ F' R6 r% {update-credibility-list
) b. {5 E; U# v

. V$ B: \( a, z0 \+ a. R6 f# g9 _6 ]
update-global-reputation-list
/ e7 I8 S1 a; g0 q2 k$ k
+ a/ ~1 Z8 Q! c* K; c+ w- o
poll-class
, l: o# d' w( k" z) i# T! U
+ j9 y: h9 q. ^4 v0 E
get-color
- ?& ^. e* K* m% ]# p/ {

* C- @3 S/ }% C]]
+ }' B8 q8 d8 `0 t7 W5 U
3 ~) n5 A( c4 R" p7 g" b; ~;;
如果所得的信任度满足条件,则进行交易1 w1 d' E4 W/ f2 D6 w1 ^

( G/ r* M4 B6 N5 ~( ^2 F[
. n0 W; {. \) C4 f+ j$ h

+ v/ x& U& [! Z4 j7 l+ |. P3 O, Hrt random 360

2 A9 a4 O$ C! [5 v. L: c7 j" ]- N" T" a; W& x; e1 N$ j
fd 1

' ]. @, e0 {( j$ _: [. U7 l9 Q; l6 D' u1 `+ @' T" c& t' O
]
- |8 \* z/ X4 g5 P, |" _
. n+ b4 K. M5 _/ w2 x# a" o
end

' E, Y/ Y5 \$ _5 a4 L3 o) m! w; O/ H% t
to do-trust , J9 b' ?/ M% \9 S
set trust-ok False4 a9 G: V3 l' A0 W: n6 T% H0 q

4 Y4 K2 b# k/ v+ |6 t) A2 ~

' K8 h$ l( C2 |+ e1 v; Vlet max-trade-times 0
/ l" v$ J" `6 J# S( q# R, H" P' U: tforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]/ |$ q& p, y  e8 X, n
let max-trade-money 0
& r6 ?! {2 b; I# q( Oforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]& F4 m0 t4 W: i! p
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)). Q- l" _: a2 H% t) i7 L
/ V" b, j& G/ M$ `, t6 g, l1 R% F) v( `

7 g) w  H! b+ v: x' \get-global-proportion
- _2 o" F  ]6 Klet trust-value3 m- ?; w, F+ K% F
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( }2 X, P# q+ c. @/ B( q$ Q0 |
if(trust-value > trade-trust-value)
; n/ ^$ H% O+ q4 T9 |[set trust-ok true]
6 r) E4 U# d1 D- N- xend
% h6 @' u* @; \2 O( _; K4 ]7 t  }  ~! `) x; i* e0 x$ W
to get-global-proportion
  t1 d5 O8 ^- {1 W9 [# Fifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
: o0 ~% i( T) r- z3 |[set global-proportion 0]8 J1 l" u5 O: p1 {: s3 u4 x
[let i 0
; K8 m  C* r/ h4 P4 }4 h' Glet sum-money 0- |- w& _' N7 s3 Q$ X# u3 w7 w
while[ i < people]
5 G* x2 x( ?: r9 U  a. J8 m9 L4 ]  Z[
) z1 ]/ C+ p6 H! Q7 a: X; |& [if( length (item i' M& r/ e, `* w$ [
[trade-record-all] of customer) > 3 )

# b: k7 L) q. C; Z[+ w2 ]" d1 P8 ?" E3 a* ?. p
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))0 u) G3 J$ ~7 ?  A' W
]( Q& w4 }# e% g5 [; I3 |! p
]
1 b% r* W) L" T7 {- X8 n3 ]0 wlet j 0
4 k7 U; P5 v( B0 zlet note 0
" @! n* `' I! u" kwhile[ j < people]2 }4 |# [1 Z3 N7 v& e9 G
[
+ x: Y8 L8 a; w% U% G4 P1 aif( length (item i
3 h* b9 J! `! K3 J# m[trade-record-all] of customer) > 3 )
$ l8 I3 a$ U: G! O# e# `0 n
[
# s* e3 F; ~  L. V0 kifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)3 t4 ?# B6 D' Q8 @" b. q
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
3 ^/ o' p3 ^7 e- Q[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]" u9 l- O2 s3 q9 f2 `- D
]
* o; z( t  I) n4 I+ P! p]! ]* c; \6 O; ?' V4 W
set global-proportion note, j3 c" s# e, n: a
], T, e3 J! O  o6 w
end( m4 r' Z+ R" d

  O! E* h! W1 y4 ~2 rto do-trade5 N; h. D1 _: ?- `# w6 K$ U
;;
这个过程实际上是给双方作出评价的过程
1 P+ h. X6 T7 b" [/ Wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价% X% G4 Q+ m1 ^4 \! L# a
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价! y* H3 ]7 Y6 f4 ^& H$ N
set trade-record-current lput(timer) trade-record-current
6 b$ j3 j# L' B8 b6 W) q; {;;
评价时间
/ ~; X6 [5 d0 _" F, o# [( y  X/ x5 Vask myself [) J3 B# l* s9 ?) r
update-local-reputation0 S3 @; E1 G3 H$ J
set trade-record-current lput([local-reputation] of myself) trade-record-current$ q) R" ], L: V3 E
]
, ?$ ~8 F+ i/ y5 ]set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself# H. Y. l  w, w+ t' P
;;
将此次交易的记录加入到trade-record-one& Q- G% M; U* U) x" d  W/ c  C
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
9 ~0 X/ S' b4 W8 f# R4 Rlet note (item 2 trade-record-current )/ N) b- N9 t" n1 g$ p6 E5 V* K' I
set trade-record-current
* A, w. j) x' H4 W& Z9 ~) h8 D(replace-item 2 trade-record-current (item 3 trade-record-current))
2 `8 F+ B9 F) g1 A9 [
set trade-record-current
: A# E4 Q, d  K( Z(replace-item 3 trade-record-current note): ^$ S% M9 X  i3 @$ W6 ]: E
/ L# [' `: ^9 q- M
5 U( s! p' j! e7 \& c
ask customer [* R% B! |+ ?& [+ Z+ Z$ T
update-local-reputation- f' B$ b' C" S8 f( e# t+ |
set trade-record-current
) @5 @* ]6 o. c  I+ l(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

! O5 i" W  v5 ?' `- {]  w& {0 x$ O  h& J3 X: M$ f! K
- r0 E: e7 Q6 Y

% n7 a9 R9 w4 ~+ d) o' X" }. jset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
! w' a/ Y  k9 W) S* C. l

# u" ]6 @; _0 N" l8 ?+ q  Bset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
; A0 j8 y' d( q, u# d' W4 m;;
将此次交易的记录加入到customertrade-record-all& a9 C+ a! f! V8 M4 A, `: [
end1 Y& S5 R# u$ C

1 D  A6 _5 r* _/ gto update-local-reputation* {! D# E: M& ~' X& q0 \& N
set [trade-record-one-len] of myself length [trade-record-one] of myself8 K- K+ a5 R8 j9 |2 Y9 ^! o' g
  c" D% z; c" Y* }( E; y
1 Y5 E5 q) G: T+ O) o) ~
;;if [trade-record-one-len] of myself > 3
, Q) |% l  K/ }$ N9 _% F2 ?' u# A2 u
update-neighbor-total/ [+ X$ E- W6 z
;;
更新邻居节点的数目,在此进行0 |9 Q" s  a, G8 S- N( V
let i 36 u( n0 J. ^" g6 h8 ~3 z) x$ h7 i
let sum-time 0
' d* \5 r# V1 O0 z6 @- _1 `! rwhile[i < [trade-record-one-len] of myself]
0 a7 \% ~0 n$ g8 d  ^! \7 j[
, O9 q3 z4 U! t& l$ aset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
# D1 y, B1 y) ~  zset i
/ O1 x% D* E3 M! q( i + 1)

6 e% Y! a0 U" X; |: j- L: B2 ?]6 p$ d" N, ~$ s6 o( H- [
let j 3+ t) l" m% {" a2 y' c
let sum-money 0
) c( P+ I( J' J# v5 {, n$ vwhile[j < [trade-record-one-len] of myself]
5 X" \; l7 i; i) X, \* u9 q) x7 ][
) c& a6 H3 m- zset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
& E; @7 i& A9 E: T( O) E# Oset j
' C# C1 y/ A  j8 s( j + 1)
5 z3 k) |- M  g+ N2 o8 f
]  t5 Y8 N* h0 w9 h$ v
let k 3% a/ v, T& K. s' s
let power 0$ J4 G( d% y6 {5 K( c8 R; D
let local 0
3 ?8 h& {: u& @" k0 W$ [while [k <[trade-record-one-len] of myself]$ D8 {( G1 J" r
[0 @* l6 y' `0 C8 F4 ?
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) ; L6 K7 ^; e+ F3 k' F
set k (k + 1)
( M* n8 ^, H! x/ @]
8 W6 P5 v7 K3 U0 ]- ]% M/ jset [local-reputation] of myself (local)
( @2 y0 U$ B5 tend1 S+ ?6 ]: Y4 t, H: K6 I3 s" f
5 ], J  E  A0 y. `% R. M8 T7 A0 ?
to update-neighbor-total# y1 ?- v$ L; T8 z! K, M

! p; r. Y. V! |5 c( v; a/ O! Z: oif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
+ b/ \/ A7 X' h2 C2 q: J1 S8 e
. Q& G6 E6 a9 @% @/ ^. k

  u, K9 f6 N4 m* _end8 B8 c  m. f; {" D7 K! u2 W) \! E

/ @, g& x8 I9 Y8 {' C7 M7 K% Tto update-credibility-ijl
$ ?( g0 Y6 V; }. b% A/ h4 |' Z0 w- s$ n  k
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。8 g# I# E/ X2 w: _$ b
let l 04 N5 h9 L* h( u. |; j
while[ l < people ]
* c/ A: e0 h2 a4 \% v& [4 p2 N;;
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8 @: {. {" n8 m# k1 c& p; D, O
[+ F5 g4 H% ^# h1 D' P/ b
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
8 ?! x6 t" {" A5 o. M2 |if (trade-record-one-j-l-len > 3)
/ U6 ^& h2 E- T' E7 \- T9 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-one7 |4 w7 E# X4 t  h& |- k. O
let i 3/ h( n! R+ c2 J/ V
let sum-time 0
0 v" T+ Z8 _0 ?3 j& V5 {2 C, ywhile[i < trade-record-one-len]$ H* O+ V1 x* y% `' o1 }
[( E7 M, z1 C" Y# P+ r
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
7 ~, N8 P4 r- F- D0 n( Yset i1 [$ Q! }+ l6 R  R5 y' p. ^6 O
( i + 1)
1 E! e/ ]! I6 K( w5 d/ k
]/ H/ P( }; }! H. a
let credibility-i-j-l 0
' y, I8 g$ r  E5 l, A;;i
评价(jjl的评价)2 \5 v" D0 y; [) `( V. z; V
let j 34 R" [' U; A& ]' ^! U; @" B# n$ V
let k 4
" `; p# L; H$ |0 m) p% I2 d- b8 owhile[j < trade-record-one-len]# e. T  @: L( n8 h, ^0 o5 v: S
[. `" c# e. N; g% X
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0 i3 k& ]1 \- A3 C! ]4 |
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)
6 W1 M/ ]( l9 L  L& mset j0 |& o% i* C% J2 j) C! \
( j + 1)

5 s6 X' ?- X  x], }. C0 N  k' A; d" A: o, P! n! L
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 ))
4 u/ u' D# S( b9 e7 w
! H) O9 @: F; Z( W) e8 j
6 x, N( s+ F* P: r
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
/ k; A$ e% Q9 U( P0 D3 ~3 |6 F;;
及时更新il的评价质量的评价
% d, N5 \& B( q! G" G$ Uset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
4 x+ F- F; v. ?: E$ Uset l (l + 1)
- z$ `4 p- c8 F' t1 P]7 @( d$ H$ H' K, c) p3 c
end( @# D- U, d: m  f( r
7 f4 w5 z( ?/ y  |6 |  c, K
to update-credibility-list: l. j" b0 ?$ p  @$ @6 m9 \& |  a
let i 0
# `$ }& I- Y7 J! G2 e8 Lwhile[i < people]' S9 P$ v* @) k# `4 O/ T
[
' g; E$ Z4 v( }) Alet j 0
# L' M1 }" j# a; flet note 0# B& M! l: Z. j7 n' w5 N$ P
let k 0( J3 F6 C- w. C
;;
计作出过评价的邻居节点的数目
: {, S' ?, ?4 N& ^7 p, P9 q' L8 @while[j < people]
' C6 ^" D- N8 o% f5 Z[
5 _0 v2 C2 V: ], t2 V. @4 c2 A$ _if (item j( [credibility] of turtle (i + 1)) != -1)/ h9 y) s( X- d% T& s
;;
判断是否给本turtle的评价质量做出过评价的节点! n; l$ p' U( @$ X% H$ {
[set note (note + item j ([credibility]of turtle (i + 1)))
) ^, @9 D7 k) `# ?, W# h6 i0 a8 Q;;*(exp (-(people - 2)))/(people - 2))]
% ?0 Y; U: n: c2 [9 Z, k/ N
set k (k + 1)
3 H* F3 l3 ?& a  O9 o6 d& f]/ |- u9 f- U3 `; d* z3 ^7 `8 p
set j (j + 1); A9 ^9 m: p: f, H# C9 \" t
]
; X6 Y' x  I; {set note (note *(exp (- (1 / k)))/ k)
  t4 u, F1 J6 R' D2 ^1 B5 `" \$ a# [set credibility-list (replace-item i credibility-list note)% Z7 f, z$ B& P- Z0 y9 m
set i (i + 1)
; u2 s+ k* M" [3 b9 x2 _0 v], u: i; L& ?+ ?. l8 S, a6 k0 t; d0 F
end
; P* f7 Z4 u9 e# W. F* r: l$ H2 u- x8 B3 k: f4 l
to update-global-reputation-list5 |+ o" Y: m2 s% y- P1 D
let j 0, b& U) h. D; \; O
while[j < people]5 N6 b" K! A& W
[9 |: [& ~: ?# ~( z6 {
let new 0
; T  G7 a6 p' _4 D) v. a;;
暂存新的一个全局声誉
* t  o+ _$ Q& i9 zlet i 0
/ |6 Z% E; H$ v/ R. rlet sum-money 0# C: b# l6 O6 i6 e* F
let credibility-money 0. ~/ p, }" U6 U8 Z) R9 E
while [i < people]0 Z* ?  C( ]2 d9 _4 W
[3 _/ h% p$ u1 d6 m. A
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))! R9 x% ?: L; D( `
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
2 t  ?3 O' N9 |" T8 iset i (i + 1)0 h/ q8 g6 G3 c5 C) n
]
9 `. l! |" ]' w4 L+ Flet k 0
! F. d, f) O  r$ d* s2 e& |: llet new1 0
% c0 Y6 h- G- s% {( Lwhile [k < people]
* D  o% \; r8 O( \* Q% J7 @6 |6 M$ x[
/ W5 j; k# ~: cset 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)
, R% y& _1 Q: t5 ?) P% A- \set k (k + 1)! K7 t8 j, _$ b( h: |% ^$ @
]
$ E/ Y/ }$ {' |5 J# `/ |% |+ Zset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 5 |6 c! ]. j! K% i6 x+ `
set global-reputation-list (replace-item j global-reputation-list new)
( w2 G- R* m$ ^9 a5 z8 X& xset j (j + 1)
1 _0 A4 A5 i' C$ r]
" l5 L! G0 e0 K+ j: j  \2 fend
1 Y$ v. ^, C/ M( |) v  Q$ F- M; C# y: _( d. b" h8 p( a
# f6 Q4 M! b7 l

# T2 @- v" n( a) d# a6 Qto get-color7 n: t6 B/ `" y& ~. \

# N" o9 H4 ~7 V+ Iset color blue
$ B3 U+ b$ m; f) G5 z. u6 O7 @5 K
end
. t# r' p8 h  O; m7 U9 p4 `+ u+ e+ B# E: R
to poll-class  Y5 C2 x  `- t
end- {1 ~/ ^( ^6 S9 F

/ J& U  Q& m. I% `2 _5 h& t  fto setup-plot1
. J2 w) l7 l% A0 ^5 t- t; r$ B0 C, Y
set-current-plot "Trends-of-Local-reputation"

8 T# ?) c7 [5 y" l
6 `3 ^5 R; I5 f8 k" H- Mset-plot-x-range 0 xmax
0 M# U9 g& u6 r  w/ Y

8 i, f. I% _% e3 Uset-plot-y-range 0.0 ymax

9 i* \8 G3 D) ^# a' Z. Bend7 w1 A5 a( }, @
& Q( q+ b9 Y7 U4 p
to setup-plot2
$ }" \8 Q+ x9 f& y) X' e8 n) l- H7 }! U) B  h
set-current-plot "Trends-of-global-reputation"
; }, V2 r* B2 |$ R2 m# n

' t6 F! j/ f  ?3 t7 Kset-plot-x-range 0 xmax

- C" J1 M9 A8 Q$ Z" X) i
& B0 t3 B: T! c8 }1 c+ [set-plot-y-range 0.0 ymax
. k+ p) \6 h$ A& I9 t
end
" l& y& y- \$ B5 x& c5 g, G& c, D( Q
to setup-plot3
( O3 v( N3 I. ]0 j* J  K( L7 _2 H. T/ M3 W$ c
set-current-plot "Trends-of-credibility"
  K1 S1 k: v+ Y7 B; Y( m
; D4 b  J; f* B1 O) m0 y% ^% d
set-plot-x-range 0 xmax

0 g9 }$ w# i' N0 b$ A. d+ v
6 c; ^. U9 _& v3 @set-plot-y-range 0.0 ymax
7 d8 E# P  y7 E3 Q1 b
end0 J. m, ^. v! P- x% ?" \6 h8 E

! P) a* e. L' N! P3 }) h  }to do-plots( K6 V& g  N5 r$ N
set-current-plot "Trends-of-Local-reputation", \% H6 J4 e1 p: s
set-current-plot-pen "Honest service"0 M% g$ R! ~7 c8 W
end( l" G9 M; W7 w; [
3 r4 a% M4 W' a
[ 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./ v' c: O  J% R  _- Q

6 e, z' J1 v5 d/ |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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