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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:
- L1 Z' T1 z* {" g3 C1 q$ Wto do-business 7 J2 ^# ]9 u0 {" v3 u, O- S" h/ p
rt random 360
% @4 J7 G  @4 S# x  m6 E2 ^# Q/ q fd 18 j8 w; T* m. C4 S: S. p2 i2 T8 Q
ifelse(other turtles-here != nobody)[
- C4 |2 ^3 N- ^: v! Z2 N& _$ a# G   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.+ Y% d1 R1 F1 s( G6 d# f/ g; p
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ! x7 \) U2 S% i& h; V1 W' m
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer) R2 f8 _! i7 ^+ Q; O. t7 n( o; b, a% h
   set [trade-record-one-len] of self length [trade-record-one] of self: Q  F9 P9 @0 d5 _
   set trade-record-current( list (timer) (random money-upper-limit))( q( i% b8 S% m8 v1 O2 P& c' L/ Q+ U
1 V/ B# d# S+ ~0 u$ A& b" C1 X$ F
问题的提示如下:+ Z( b  ~. `. M( Q* J4 |4 A/ H9 L6 M

3 }. Y, \2 Q( U, X2 eerror while turtle 50 running OF in procedure DO-BUSINESS
! o1 ?: _5 a5 y4 a( g+ j2 ~& M  called by procedure GO9 a2 E4 {+ J8 n' Y  v" v
OF expected input to be a turtle agentset or turtle but got NOBODY instead.3 d# `4 D* X) x1 ~9 [. d  H! f* S0 R
(halted running of go)- l9 j" r. m: ~5 h+ y4 \! X

0 O4 R) Z7 Q' r: H& C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~~
( w; m3 i( e5 {: W, c2 d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
/ d* h* ?( N& R& D% m' I$ f8 [globals[& W* O; x4 m% D) y3 V, s( m
xmax8 Z, V2 F% W, |" n+ b8 l9 q
ymax/ w' j* I: V. c3 ~* h- I
global-reputation-list! I1 ^5 C5 U- T$ e+ j8 W  w2 Y* A
4 ]* h  k6 `' K9 W* D5 P* o* q
;;
每一个turtle的全局声誉都存在此LIST* Q0 p- Z% A6 C8 H! z; _) L
credibility-list
5 p9 ~5 D- [: g. d;;
每一个turtle的评价可信度( r5 _$ ?) v9 y" x7 g  J- H
honest-service! ?- X2 y3 M3 C0 k7 t& l
unhonest-service
3 ^& u8 F/ l# F0 f( l7 koscillation
4 \  K& l% j" n1 v# B; mrand-dynamic  w9 c% t. H2 N+ ?+ T
]+ h) q, m) x* Q) S" b0 P

& r9 [( l* W) v5 R* M5 {turtles-own[% S! h3 X, \0 S6 R0 O  ~. m; J
trade-record-all
4 K! b+ @; n! ~) ^. }$ b) U! y+ J;;a list of lists,
trade-record-one组成7 I1 o, \  C+ y+ B8 i: ^) T# r& h
trade-record-one# H; F* ^' n, P; y8 i! 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
% ]( E0 o( A" J6 p4 S9 Y3 j9 u
" T+ M0 h3 m2 |4 c6 ^2 \;;[
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]]7 ]: Y) [% k) v5 S6 x
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 n: P; _, T" a" J
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
9 b1 D* N: ^  T- u7 q0 nneighbor-total4 x1 P# q* @$ z& {9 T' t
;;
记录该turtle的邻居节点的数目* ~9 c9 Q$ t4 c( t, u1 z9 B
trade-time
, J( D& k) T  L# f  ?;;
当前发生交易的turtle的交易时间' |+ c3 t* E  N/ y. b# H4 E2 E/ ?
appraise-give
+ V- j$ v0 D- x, u* ?' X6 `;;
当前发生交易时给出的评价
& s: v+ x9 i. R* ]% o2 ~1 S+ eappraise-receive
. m* |" b. ^" I1 p- g;;
当前发生交易时收到的评价
- [2 O/ i* }6 b; R- B, ^appraise-time  p& }1 `5 D" b( A! E
;;
当前发生交易时的评价时间: H9 T9 X' l* c7 P' i8 W) B8 F8 @
local-reputation-now;;此次交易后相对于对方turtle的局部声誉/ |) k( n/ d+ ]5 w, ~8 j4 `, _9 e
trade-times-total
) J3 V0 p0 `# f$ d$ I2 j% U;;
与当前turtle的交易总次数: K! w8 m4 w) l" t: y
trade-money-total- o& t! E* X0 F* v8 U: O7 [
;;
与当前turtle的交易总金额
, M# E4 O2 C' f; Q' A' T- }/ Glocal-reputation
) m' Y* V5 s4 o9 Kglobal-reputation4 M+ h- Z7 H% |0 ~
credibility
/ n) K; N3 }1 @# _- A;;
评价可信度,每次交易后都需要更新1 L! R% _. @1 g* U
credibility-all
- d3 g2 n1 |$ u* `;;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
) c& Y' [& G6 o8 r4 P; _
4 \, X1 u" U4 Z+ T3 [& b# g8 h9 `;;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( B( j! k9 q$ q' y
credibility-one
& I! {3 A% K: b! n; p5 Q;;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people3 j0 }" _: \/ P$ K2 e" d9 z" E
global-proportion
# E, Q& U* ?% x3 y4 n$ h8 @customer. S  m' I2 @2 m, Z( H0 V
customer-no
" T& J3 ~1 A- e- {( G$ gtrust-ok
3 }  S7 D. h( Wtrade-record-one-len;;trade-record-one的长度! \6 D  m9 H/ w0 n" \% ^
]7 J* b! i6 C+ G% r

4 |: H! D* c+ l2 [0 n;;setup procedure2 c6 J( a9 E; ^' b3 G' s3 f
: f0 P" e6 x" k; q1 c% |* ^! Y
to setup
+ g+ h+ u7 o+ ?8 `5 Y
2 Z# O$ g& t/ a7 W1 wca
. ^( ~1 L: M5 P  Q; N

8 T, A0 s: e% N7 W( I* tinitialize-settings

% A- |  O0 j) Z# G8 q- n" z6 f
- c* W8 L, z5 I- P& xcrt people [setup-turtles]
/ }/ _! s2 s+ [- Z7 O
) z: ^" t; v: Z
reset-timer
" t7 T: O/ B! j  ~

$ ~0 s- C7 k1 }( X2 J1 D4 S* `poll-class
! w( h3 h  f, q5 g
% e: x: {, A2 y' a* i1 [
setup-plots
7 a& Z& U& I& Y) E0 Q
& f! ?, E# K3 H' n0 w
do-plots

! l) _7 W6 T* O4 l3 Nend5 O+ {8 G) j2 L- G
1 F! Q5 Y, A0 T4 F
to initialize-settings
3 X( p5 r4 V6 s/ a3 W4 E4 a
; u7 I5 S2 k0 R  h4 vset global-reputation-list []

9 p) u3 }" D/ ]3 P7 d6 x: u
4 h  p: j% h/ ?) bset credibility-list n-values people [0.5]

0 ?2 G, c7 V& R& n* l% w4 u$ [- o& Y0 m7 m6 `1 Q( g& z
set honest-service 0
" \# ]" l+ Q6 c% L+ M: h( {

) n' L( o( q0 n2 a: z7 q; fset unhonest-service 0

* ]( ]& v; z* g4 \6 Y
% o! ]6 K; t& n7 T, mset oscillation 0

  r: Q, B" h; Z3 Y8 d& l6 Q
" v! _. F- t" \6 \5 `# Bset rand-dynamic 0

* Y" s4 X. e8 G, Jend
/ a5 G/ U, \8 C0 C0 C) }5 ~9 F) n3 Z% C1 [0 r9 i4 e
to setup-turtles # T$ T  ~$ t1 @6 t& G3 F4 T
set shape "person"
9 `  c7 T& U! ^# dsetxy random-xcor random-ycor* W% e6 u. h2 C- ]) F) }  b
set trade-record-one []% M" v' M* T% \* ?& z
+ E: @5 W# W7 |5 q  |6 _$ D
set trade-record-all n-values people [(list (? + 1) 0 0)]
6 m' t6 \0 P% ?/ {: J5 O/ @

. u; L1 H; K: Qset trade-record-current []
. V& ^( l) b( d) V# N* s8 a- pset credibility-receive []
$ ^; Z; X$ d4 Y3 Kset local-reputation 0.5
3 k6 ]; L$ x6 d$ Z/ [: M  xset neighbor-total 0" ~: T" `6 o$ k; @. _
set trade-times-total 06 c: h2 }1 @7 q0 a' }( J& A+ H
set trade-money-total 0
" |. p, F% a6 I6 J) l0 c: ?set customer nobody
% q+ }7 I6 q( X+ Y% Uset credibility-all n-values people [creat-credibility]
+ e6 U/ Z: t; q2 `set credibility n-values people [-1]
. ~# Q1 Q# Y+ N9 tget-color1 p) o4 c, q# @8 s5 {8 z8 ]8 R

0 f% b" o! ~% z- j4 |! M2 iend
6 D/ O0 ]3 J5 Z3 V! a9 J, B* i
2 V3 T5 T+ V# d) n, n0 y+ `$ L2 kto-report creat-credibility6 ~7 ]; v. ^9 z
report n-values people [0.5]/ k4 }! X, L3 x3 {0 K, s% }
end! C' l8 `$ Y; N( }" d
7 X7 V* L5 r; N$ `5 k
to setup-plots
/ Y: `+ f. c! ?
3 e) n9 f  w6 P4 F6 w1 u, bset xmax 30

$ H4 }: s! {0 [0 n* A, o7 L" R" d: L) T" b1 F0 L
set ymax 1.0
. G# C1 @2 P' w5 W

; m+ Y; b& J) `2 f% bclear-all-plots
* j, c+ L3 K6 H" R) B
/ S( Z. {) |* z' `* {3 C! G  Z
setup-plot1
. z5 N, f( ^' @
  T6 o; G+ C& ?0 Z) n0 a! i' M- t
setup-plot2

3 ?# K5 L0 ~4 v1 l- H% c
) Z! A$ l& H6 \setup-plot3
! \8 o2 k+ q" |8 w8 m; u. u1 r
end3 T$ y+ U5 X% E+ l( Q
  {9 i4 ~; N. l# I3 g3 f# G4 F
;;run time procedures
$ Q, V: c, z6 z7 z6 z+ e# P+ m1 L; P! K% {
to go) b6 E3 e7 B; E5 d* ~2 y
$ N" d# y  C6 W' V, T
ask turtles [do-business]
: }8 ^% h& g* t0 ~$ f& `
end
6 @; Q5 x: f7 e5 W! A& Z" ?
' ]  V) A; f- {! }8 ]to do-business
3 T9 q" |6 I8 X, Y8 Z' C$ Z
$ f6 R& V) H0 e' E+ a
) U, k7 r' Z& ?
rt random 360
% m, O7 W' y! W- v

% n* x9 {+ k7 y2 h& Zfd 1

4 }7 s$ d( c  z3 }% G! S+ X- E0 y4 u/ L9 I) c: `
ifelse(other turtles-here != nobody)[

7 q4 Y" D/ I3 Y2 r! x! }* `
; s0 {) W8 R0 I7 L" V; ], Nset customer one-of other turtles-here

# u8 m* q/ ?( ^+ c# y  u7 Q$ E9 `9 y% _" D! t5 t9 x
;; set [customer] of customer myself
4 L! b# ^# X( m
0 `% b; P, b6 K" ?4 s
set [trade-record-one] of self item (([who] of customer) - 1)1 n2 j% N; J0 _; ?9 m- ?1 u4 \
[trade-record-all]of self
) Y# _, y( y0 M" l( C% @# a;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
. k; G  j4 n/ n; h
% @. c9 U% a. ]/ l0 f8 U- F3 n
set [trade-record-one] of customer item (([who] of self) - 1)
) ^& _0 H6 H9 {5 m* [[trade-record-all]of customer

( ~. X4 o% _4 ]) n' c7 h  U& D8 [! w* N5 g7 P' e& n  N
set [trade-record-one-len] of self length [trade-record-one] of self

& Z! e9 D; `0 P! ~" Y6 c/ A0 `* }" ?2 ^! j; N* H! L
set trade-record-current( list (timer) (random money-upper-limit))

# y1 t. o& k# K
$ ?& @" v* G, s/ ~. Jask self [do-trust]% Y: S6 ?& L) D; K- o2 G9 N
;;
先求ij的信任度
  g7 x# o3 G/ C& Q3 ~+ k
- Z) V' _# O0 J9 Wif ([trust-ok] of self)
4 i/ G3 D! W. s6 Q;;
根据ij的信任度来决定是否与j进行交易[1 P* U9 k- t4 R6 Z
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself/ y8 s, U1 ?6 Y3 u/ K+ o* l

5 Z, }) v5 l7 a4 m! P* G; y[
6 T$ L' _+ I- u4 R. g9 L& B
8 T: S$ B" O. u& u# e& {
do-trade
- {/ I, `4 I2 k6 T8 c
; E4 H0 H0 Q; I# @/ q' U1 ]
update-credibility-ijl
; [2 h) v6 }( D$ \' R8 ^, A

+ T7 U7 \, t9 V% `/ F2 Oupdate-credibility-list
( K* Z% s1 p) E/ a- X- o" Q& C; v; z
; Z. Q0 \: _4 c# `

1 Z( K: L( A) h0 Lupdate-global-reputation-list

6 o9 Z- ~  v: ]
4 x- ]: d) W" ~$ E: Z5 _4 [# ^poll-class
2 p4 W; F' _  Q- |; }
# v9 H' Q, V* n# v2 F
get-color
  Z" Z0 t4 I* \$ o

# ~2 s& {' |, D# F9 b. c0 l]]
5 t, ?6 i9 m* q# j* i* d
7 K- s/ D/ P( E+ m# e;;
如果所得的信任度满足条件,则进行交易& l/ {1 [( u) G0 M9 ^# d

8 C+ B- f% D, M- ~2 j- S[

! F, G/ T5 _0 M  U, G5 `& ]2 {7 t$ e. q9 v$ x
rt random 360

- A/ ]. y- j. V+ J( [( K8 R
) V  U% \7 C, x1 Q. T* @7 s) gfd 1

8 J* `  Q$ z' \* B+ p4 w& V5 j4 X  J! t* z8 q+ g+ t
]
5 v, f, s, c. {5 q0 t

! C( ]3 {) Q+ g* {+ eend

' o9 s6 r7 t0 V# V. \; A( d! H! n8 r6 @; f
to do-trust ; d& @) w' O( Q5 \. z" }
set trust-ok False% r. Y% c3 `7 O) o
/ i  k1 u) l4 \+ r1 S* V% W
2 C- v5 S1 {7 N( }* F
let max-trade-times 0
% g& U) n* |8 o  Lforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
0 g* H2 N; a7 U' h! Rlet max-trade-money 0
% _& U7 L' A9 V- _$ Q7 n+ Jforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
* g+ _  I0 A4 X. s: b  S( a. rlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
; u) f& D1 b  s9 C4 N, {1 b( j2 n4 o; B0 c* o
7 W6 T% a/ X4 ~5 P: U; J/ ^) F: }
get-global-proportion9 x* F0 n8 g5 d2 a4 }
let trust-value
0 H7 _: _( \! Q1 K6 Z4 D% ~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)
. V6 `8 F; I% k. r5 ^" {) w5 Q8 N
if(trust-value > trade-trust-value)- w" v5 b3 V* x! O
[set trust-ok true]" J4 S" f( c% s' p
end
4 o. W9 P6 |+ H9 o' b9 a4 D9 y" z/ k+ x8 X
to get-global-proportion
# N- u9 d' J2 k" g  W: B8 ~ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)% E8 ]$ h5 U4 x. u5 i
[set global-proportion 0]
( z9 \. X: w4 Q$ f2 E: ^9 `' g% Y[let i 0
; s# f9 S. {4 `4 J# Rlet sum-money 0
7 t( v& t# a4 Z( q9 M$ p9 i% awhile[ i < people]0 F/ G7 Y  h# [" t; F
[
( l. L2 @4 d8 s- G, e, ?if( length (item i
: Z1 c* E, c/ q' E[trade-record-all] of customer) > 3 )

7 l5 D/ U. R2 ?# Y4 m, S[+ }. ]1 f. R) [$ f. r
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))5 a* w# _  H/ `) \+ T
]" R' Z+ H+ u: e$ i. u
]+ q1 ~# h' s5 W0 J
let j 0
1 k* _  b1 f* }9 ^9 n* w# H. Plet note 0+ o: ?: d. z7 Q( b1 B- H) q
while[ j < people]
' Z! N# _$ I9 c/ G. T6 e[/ H. G! [  ]& F* ^* D% W  n# A2 z
if( length (item i
# P& d  o4 ~3 b) N. i! m# U6 b[trade-record-all] of customer) > 3 )

3 o9 ?; V8 U5 M& v6 h, I[! X$ p% v) B" A4 E
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
4 m6 N8 s; n5 A( g" @3 k[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
: v7 |  ]+ y0 R[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
8 Q2 |+ l% X$ E], f# N) E' m8 o
]
# a9 R: h$ Y/ T3 lset global-proportion note
9 g: B  [/ c" q8 p$ q. H4 G5 M]' K9 Z7 s/ t! L& o; I% U
end2 w: Z: L& ^. ^9 s) h# o5 @" o

& T* |( X6 J% D8 u2 qto do-trade
/ E7 f. Q# h; f6 q* _2 H;;
这个过程实际上是给双方作出评价的过程
$ m* z: u" Y  i7 x% f' D8 \set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价* o2 H* A( Q1 }6 n) w
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价/ ?9 W3 K) }# A. V
set trade-record-current lput(timer) trade-record-current% g# ]& L2 b7 c2 j4 ^9 A& L
;;
评价时间
# t0 ~8 M9 C/ x3 ~. \ask myself [3 M  ]6 |7 N4 {7 X
update-local-reputation
3 S0 R: ]  z' q/ o8 D- f3 `set trade-record-current lput([local-reputation] of myself) trade-record-current  K- g6 @4 ~/ k, @( F; [" Z
]% K5 a/ m6 ]8 g, N8 R8 w
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself9 R  Q( n8 w; c2 x
;;
将此次交易的记录加入到trade-record-one' v7 Y, N2 i% D5 i" M/ H- c  D
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)% F$ @- I/ Y& s
let note (item 2 trade-record-current )
/ D0 X2 A9 r9 {  e; [set trade-record-current
0 U8 R4 i/ \3 n(replace-item 2 trade-record-current (item 3 trade-record-current))
6 N! Q# A% ]& H, ^! |* @- M
set trade-record-current
% }; m1 N3 a1 o4 v" y(replace-item 3 trade-record-current note)3 T; n# @2 V9 P' D" L* y$ m' W

" Z( |; y7 j9 B: ]
) S8 V3 I6 J1 W
ask customer [& q/ X! n- z/ u9 a
update-local-reputation! a& o" ]) L; q+ T; l# ]$ a
set trade-record-current) P* q. L4 h. _2 e
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

) q2 T& N% U; s3 S8 a]1 G0 U. k4 u$ i. h: l" }5 A
% _  {; e" q) U/ n! `& Q3 y

$ ~+ {7 _, Q9 }! h! A" Y$ Z: Mset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! R) l/ P. B5 d4 `
2 E) z+ X: g1 V
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
7 o% k' d; o, q* n6 \5 d6 F;;
将此次交易的记录加入到customertrade-record-all* I7 }6 I) T- R2 b6 G, n6 [- v% {
end6 E( [9 d4 Z  J6 P5 [
! b8 z, j# Z/ e: y: y: S1 P# v
to update-local-reputation
* ^, P7 o7 L4 ~1 [+ V0 b. lset [trade-record-one-len] of myself length [trade-record-one] of myself
1 Y* d% [0 t: F1 g) m( {, B2 V0 P
9 S- j' j" a. [# C( z4 }0 @
;;if [trade-record-one-len] of myself > 3
7 @- E: c$ u( Q+ _' v2 N# e0 |
update-neighbor-total
/ X9 e! q3 [- O. y3 O* h/ @7 k;;
更新邻居节点的数目,在此进行
2 A6 @+ z8 |3 s8 b# olet i 31 X. E0 b( c$ X. v! R' E
let sum-time 0
# v( x' X4 Z/ r3 E4 C  s5 g) a7 ~while[i < [trade-record-one-len] of myself]- ]) U: j8 F' t9 d3 s5 m
[) f8 v- j$ W8 E9 D3 F5 i/ Y
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
% O( e4 T$ T: m! N: ^+ [set i
  d5 R$ u) ]1 b+ d5 s) V5 t( i + 1)
8 T5 \0 a7 p# y; ~, w9 N3 `/ O& F9 G
]: W9 c3 D1 l: f# i) |+ s9 i6 [
let j 3
  Y% D. o- S) n/ M9 Slet sum-money 0& j5 i8 F4 U8 O! J& {
while[j < [trade-record-one-len] of myself]7 p  A* i2 ~7 H( |- Q
[, Q1 f1 B* X( l  j1 {: h) Y
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)
, b5 b0 i# }0 ~- Y' X: M* l6 Yset j
9 j# U! \+ S* y  w" C. b( j + 1)

  n  {3 @. r; M3 S7 Z' U! M4 }5 C]6 U; Q' M" e/ Y7 r" i9 t2 ]
let k 3
7 G/ q9 ~. Z. k; Llet power 0
- D& y. Q6 Y# X' U2 z6 ulet local 0
' {: A: b/ ?& X" xwhile [k <[trade-record-one-len] of myself]
8 I- E( k/ o" Y) y! O9 Q[
; _8 p/ A; S) }: c/ ?; Dset 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)   ~' G2 X' |& j: |
set k (k + 1)! ]1 R3 K$ `6 t. o0 t" k
]
1 f# d$ p0 r1 y3 g7 hset [local-reputation] of myself (local)
; f  B. n5 n# k% Wend6 N/ Y" v  u; h' y5 v0 p1 H
+ }5 q2 v6 O+ }0 \% o
to update-neighbor-total& u, C, O$ B8 r3 H' Z/ D
  l1 e8 Q" d4 E
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]! _8 x6 X# h, v1 Q0 A

- v/ S" g" k" ?0 t; O

8 P, U4 a5 a7 m) lend
/ x* P5 X2 f9 b: |
2 b  j+ R* R* t2 a- L" z  xto update-credibility-ijl 2 Y; d; k  o& O: r2 S2 F9 A
3 p( g0 n, A# z& R% T/ m
;;
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。' z+ S- `- Y1 S/ Q7 P1 N
let l 0( B- V' A2 u) O6 U+ @8 f' X2 a4 o1 m
while[ l < people ]
4 r3 u: D/ M/ Y;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
2 y: v5 y9 Q6 t  F5 L; g1 g( d[  A! D5 d2 \' J8 b* m
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)/ T7 B. [2 R4 a1 j) g+ c' m0 c+ a
if (trade-record-one-j-l-len > 3)8 D6 o/ s- R$ ?  V* j
[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" U1 X4 O( F3 s
let i 3
+ r" S8 {) Q; t0 ulet sum-time 03 }4 U& Z% s' I. d/ v
while[i < trade-record-one-len]
7 @  `1 O9 q5 q' ][
  y3 m( O2 a: J$ r2 n9 @1 z* v7 lset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )' N% V; F1 l, d
set i% ~& d# F; \2 D, I6 K1 L) f4 |! C/ N
( i + 1)
! k  V3 u3 x, V4 |9 n% \, a: a
]
* d; Q, b$ r; ~& L0 V  x- Z1 w+ x, Flet credibility-i-j-l 0
; K) Q; p. g, c3 P7 t7 |' p) v;;i
评价(jjl的评价)& T% @0 R% B; b. Y9 A
let j 35 i, A0 |7 r. N: P. `* n  o
let k 4% K, d+ Y# N* X! b) V
while[j < trade-record-one-len]
7 F+ ?; a' K- E) H. o[
/ W4 R* G2 f* _7 Q1 ]/ Jwhile [((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
+ v$ B+ m8 _9 u* ^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)
0 X/ P3 d0 e. e+ I4 m' Lset j1 o5 i7 ]- k# v$ h8 I* \
( j + 1)

; e, T2 m+ c6 q- b$ Z; R- W]4 e4 k5 b+ D7 N
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 ))9 o0 n# p1 B, |5 O" B

% L1 Q7 a/ g  w9 [3 |. F

3 G- f4 W  `) M. y+ [( @6 O# Slet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))- u$ `* h  a9 \- v0 K. I$ f) Y
;;
及时更新il的评价质量的评价- |% ^; f" B5 A  h6 K
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]9 K5 S* K5 k4 `& `0 m! e
set l (l + 1)  m8 D7 M9 a5 ]0 }
]5 ~4 [! W/ g, U7 z3 O% K
end7 s, X. n, \( M
2 `" Y7 N) v! Q& s/ J7 q
to update-credibility-list) @% z9 m8 A% {# u
let i 0# }+ L$ n: }2 f7 z; o3 T, v6 F
while[i < people]
2 M) C$ E+ f8 B: D) s& [[( T- W* p! i& y0 ]/ q. s1 Q& J
let j 0
6 g# i: c/ {$ X7 y& ]2 f8 a) Mlet note 04 @5 |* X/ D4 R3 s/ J( K% V
let k 0
: _, B4 c+ X' A9 _3 P;;
计作出过评价的邻居节点的数目4 X1 u: j2 [) }  h8 ~# }
while[j < people]
3 r6 Y% X! f7 Q% ~[+ c$ S  k1 i. e5 Z( d6 b
if (item j( [credibility] of turtle (i + 1)) != -1)
1 D5 l5 ]! F* Y$ A* ]( [;;
判断是否给本turtle的评价质量做出过评价的节点
; M1 Y" _0 d% |, m1 ]* Y7 D) o[set note (note + item j ([credibility]of turtle (i + 1)))
- a3 D+ C5 W. C;;*(exp (-(people - 2)))/(people - 2))]

, l5 H0 x! a8 p' d3 `$ s3 {set k (k + 1)4 c* ?  d# P" O4 Z! G$ f+ d) P6 J
]
- `2 H/ \- K, t% {" ^set j (j + 1). {% i$ F" q5 |, f
]
( O8 C5 Y3 ]- |7 Q) s* k( x4 Tset note (note *(exp (- (1 / k)))/ k)* v, a6 \3 w2 l  P  h1 v
set credibility-list (replace-item i credibility-list note)/ y2 e  ]; B# K- l
set i (i + 1)
9 L1 A/ y3 Q8 V7 U& A/ Q]  q9 N) i9 ~, @- o0 k" h
end; r2 I/ f& {& T' C4 j! G2 V1 Y

7 a  L: O  ?) q+ C, l# Hto update-global-reputation-list
" i0 O2 [$ Z* nlet j 0' e) B, Y! |2 C) O- v/ h  P
while[j < people]
% \, `. B# ]& K7 {) Y. E$ N1 w; _[
* N+ g5 q4 g2 s3 xlet new 0" I5 k' M7 v# v( c& k: p! k. E6 {
;;
暂存新的一个全局声誉
- n; ?! \/ g( H; @% b& S" flet i 0
+ M1 X+ d1 U/ ^, M7 h0 r) Dlet sum-money 0; z& E! t3 c8 a1 E% E! S5 X+ f
let credibility-money 0
8 D8 M) q0 Q( Z% L8 `! lwhile [i < people]
" a. a: w; c5 Q- q( Y[& y# {, S' w4 @$ E! S
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
5 x- h1 x& X- G" P% b% ?set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
2 r5 |( j7 B  K% p) w2 P& f8 Nset i (i + 1)
, D* g5 k, D' S  ?]7 _, `2 v: K7 N1 D7 }! l5 Y0 R
let k 01 ~9 e  c8 b0 y6 G
let new1 0
+ C/ G3 U; |9 N9 R7 P  twhile [k < people]4 ^6 B! `4 n7 e8 B+ n
[+ H9 O- S" J) E! A. X+ M
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)
! t( r# \1 x4 O& a- n+ c2 J  d# vset k (k + 1)
# R" L5 r& c0 g2 {- U' ]]
1 S& d: r% g( l6 K6 q+ Tset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
. O# _; r5 Q# F9 e3 s1 Cset global-reputation-list (replace-item j global-reputation-list new)9 ~( v  e) X) o8 Z2 x) D
set j (j + 1), @8 g; H! B/ ?6 e6 j. a/ L9 a* F: z  C
]
) Z0 u% _9 M. ]9 u7 j  |. fend/ G2 s7 G3 R- b! {* w, g" A/ `

: J8 d0 D4 |  j' U) m% ?$ j, q, P, k
! C, Z: x! ~5 `/ e. N* }* k
to get-color( E3 |. f6 [8 p) \' P

: ?! j) L5 Y! M) oset color blue
( L: i* z2 i9 T4 g4 w9 I& N
end
7 B4 ^6 W2 Y& \8 h
' E5 d8 P. m: O) @- U- Cto poll-class
. x& o4 U8 t. U; G+ Wend5 G- x- e4 E( Z! p4 Q& t

. w, T! X7 j" Y; |5 zto setup-plot1
2 _6 V5 @  I- W1 Y
/ }1 U( M+ ]( t0 K; t' @set-current-plot "Trends-of-Local-reputation"
/ p) N0 v  f. U& f" d7 N

) L, j5 o9 s& d* P8 X* \set-plot-x-range 0 xmax

1 Q+ O& O' d4 t9 V$ a
) P  H  W( p# s8 x# `set-plot-y-range 0.0 ymax
- [) P, k/ d- d
end; S! y5 z. P$ b1 T9 z
+ x  V2 T/ \5 ?, ~& P
to setup-plot2" ]& N5 j1 c: i" ]0 s4 _

9 {9 o7 ^' O3 ~3 K8 q/ zset-current-plot "Trends-of-global-reputation"
0 a+ m' m* w& }1 _
1 v7 h7 l3 [" [7 W/ g. k
set-plot-x-range 0 xmax

' f& o) A3 I1 y3 B$ f
1 `- j4 q! ^4 ?( K! S( h9 ^set-plot-y-range 0.0 ymax

# [, v, R/ t5 {) Y/ I. Gend
- l( m, E' z' @6 M8 K# \) q. K  d+ G
* {! X1 s4 `* K' I* lto setup-plot37 F* I6 R& \- y. l' i; p
; J; ^; @# _* w, H7 f
set-current-plot "Trends-of-credibility"

/ V( M: i7 Y+ i- N# h4 |2 j
( h  a3 {) N5 x+ W/ lset-plot-x-range 0 xmax

# a% q. K3 g1 ?9 \! l
! L8 W" B+ L9 h1 ^set-plot-y-range 0.0 ymax
  G9 [' e% Y3 H, Q" R
end9 \8 c4 e  i3 o
7 J' ]+ Z+ M% M5 P/ a: L6 I
to do-plots
! f: r0 l; H/ E: h! Yset-current-plot "Trends-of-Local-reputation"+ ^) _. s3 \1 U' t, i" X! A
set-current-plot-pen "Honest service"
9 e7 T( W  i) B" Oend
1 B/ e2 e. c# d) [4 Y
/ {0 h% T" B8 C8 t, `* 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.
# ~9 B# L* D' D; \+ m4 _# B$ W
8 Y6 Q6 a0 j5 D( X/ \! W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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