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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
5 q7 R3 X, Y$ l. F0 Oto do-business
8 k6 ^3 ]- y1 Q  f rt random 360
- T$ U* ?/ s% ~- o: a0 u fd 1# }5 a( h6 I( e& ^- a
ifelse(other turtles-here != nobody)[) H+ t) E0 @2 g. d
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.2 g( V* m/ Z6 d, ^' {- ^( q4 T
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
7 _. j- X9 e, t4 y   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer- C4 ^# O; b5 r6 L  @6 t. {
   set [trade-record-one-len] of self length [trade-record-one] of self& P: i$ S6 q7 V3 z
   set trade-record-current( list (timer) (random money-upper-limit))
- c4 X- E4 K. x: @
( y8 F: \$ C# F问题的提示如下:! c7 s. D0 _. G- y: `4 n

4 z' z1 |  O% b2 [# Gerror while turtle 50 running OF in procedure DO-BUSINESS
, k4 ~) ?! p5 A  called by procedure GO# S) a" T' B# l( \8 }
OF expected input to be a turtle agentset or turtle but got NOBODY instead.2 `! b7 C1 R/ v8 s2 D
(halted running of go)' N0 n2 y2 `; `2 a3 I  L
. l2 A# h/ }, M2 L* R5 |
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~~
$ @5 r6 u# N" E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 a. l9 A/ S9 k2 i1 fglobals[
& l2 R9 w3 K! X6 bxmax
6 ~8 U* ?8 T7 \" E& m9 Iymax+ p8 a: X; w7 H/ y
global-reputation-list
/ h& `6 W* j. U& [- _
8 U1 o4 }# W* G6 D# ^' f5 u* @;;
每一个turtle的全局声誉都存在此LIST
1 Y! L9 E; }: f6 H+ Qcredibility-list
% N: i, S* e! G% K;;
每一个turtle的评价可信度4 ?! D, U  F! o: K! y  }
honest-service
: B0 M, T% Z5 |, O4 sunhonest-service( K4 \- V. M, U# k" Z
oscillation
7 l+ x8 z0 s3 H7 W+ X" ~rand-dynamic
9 ^6 B- k; x* K]
6 E9 W+ Y% d, _) s0 B% K
7 d; ]* X/ Y4 V& V$ e0 i# ~- g) Sturtles-own[0 w/ d# W3 \: h* s  ~
trade-record-all5 _9 X* \4 o& P
;;a list of lists,
trade-record-one组成6 K/ C9 a' L# B7 ~- i
trade-record-one& ]' i) c1 A9 o6 K7 A  S$ {
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
5 H* M& v0 o1 ?4 x) @
  N3 ?+ g/ X. J/ z" L;;[
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]]
' P; e6 h5 k2 jtrade-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]
) c9 v$ X3 U/ C! @) ~/ Pcredibility-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
1 Y) i) T1 G' F3 q7 Z9 I2 V# Q! Sneighbor-total
  k9 J  J% v$ \0 t;;
记录该turtle的邻居节点的数目0 a) E$ W* z/ }8 N- g! Y3 \
trade-time" ]5 \  W5 d& Y8 n2 B/ y* y6 `4 {& ]
;;
当前发生交易的turtle的交易时间
, u  l- G9 y* Happraise-give  U+ h  \' }7 s' C8 S& y: y( @
;;
当前发生交易时给出的评价
7 |* K( P* M* r. U" u. L) Yappraise-receive
& ~8 ~1 M4 V0 k1 Q;;
当前发生交易时收到的评价
1 ]7 U) p6 ~+ vappraise-time" z7 k0 z( G) s2 I! G& C& G
;;
当前发生交易时的评价时间
  O! b7 {( c. _3 A3 A0 d2 |local-reputation-now;;此次交易后相对于对方turtle的局部声誉5 {# W5 n- O! y9 t
trade-times-total; |" N5 o& f/ M1 l
;;
与当前turtle的交易总次数$ k4 {# v0 \1 _& `9 V! C
trade-money-total
2 h8 R# \/ _- w1 _( V- p9 V7 W9 u;;
与当前turtle的交易总金额
8 ]" A8 R3 |+ klocal-reputation
! h0 M, L' Z8 Z9 o# f5 C3 \global-reputation
. J' `: l. W: C, A+ u  _3 h- p7 lcredibility7 ?$ e  a( s- e! k, p8 Y- {( @$ V
;;
评价可信度,每次交易后都需要更新: Q* ^& u3 ^. F. u
credibility-all3 \( G- i  f. v- K8 ?- L, S5 A) A
;;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
9 X7 Z! L) a8 V  v. a+ u; b& Z; 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( Y; g% l2 S  s7 `8 m- y
credibility-one
+ r1 I' L1 `0 s- O3 X+ W;;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, C. x. ^' Kglobal-proportion4 ^& f# e7 W+ r: Z2 S: A: R
customer
7 R" ]7 z, h# }5 E6 m2 P5 ncustomer-no
& Y- X9 Q/ K3 W  P4 \trust-ok% i+ L6 \/ a6 q& d4 r" e
trade-record-one-len;;trade-record-one的长度. w9 q- A+ k. ^/ }6 ]1 y( m
]1 ?, o  L* ~* S6 i+ D% A

. Q/ ~% B, f+ e0 a  K;;setup procedure
: u( x& I" _  q. v0 G: B- a; q: _! |
to setup7 z# c9 x9 |7 p2 d4 e2 J' [
6 v% m  i. `& o! }: ?
ca
5 k* e8 v1 z% K1 h# z& N: {- V. C
( x4 F/ ]. `7 u! Z$ T7 z8 G$ F
initialize-settings
9 P" U" r( z7 a7 E* K  j, H
' U6 I2 A0 t6 y6 Q
crt people [setup-turtles]

) B- X7 _$ L; A+ y4 M" r" @) |* J- F5 p
reset-timer

: ^! R8 w2 P( B& Z5 R" D$ s; J' t( G7 J8 d& \/ N! c9 ^* O: ~3 _
poll-class

) ~5 x! w4 o* A; i% m$ }" @! n2 U6 @, `
setup-plots
) l% N9 W* ^6 s- I/ ?0 G7 K0 V
) d" B' N6 _& r+ g1 _. d1 E
do-plots
) F2 O( B" i/ L9 E9 t* Z( \5 h
end- E8 d% U0 E  G0 `" _1 J
2 `5 a7 ~9 h# h3 K( w
to initialize-settings7 A( [& `- k% d+ p' \$ o
  }6 |- ?3 P1 }/ X
set global-reputation-list []

: k- r3 b* t" r
' x" W# m& j7 a/ Z, w/ [# Oset credibility-list n-values people [0.5]

3 S$ Q' M5 A0 J+ X' {, L. z
, U7 i' `. `6 e5 y* J  S7 Rset honest-service 0

' C# U8 @, u9 T' R
. X: D4 N; C5 ]  ?6 l) @set unhonest-service 0
- @/ z- [; O/ p. V

5 A; {. {: }! p1 Lset oscillation 0
" E1 J5 m" K: N! h- w. }
4 F9 ]& c0 k0 P. i3 o  r1 }: q
set rand-dynamic 0

6 n5 E, P: ]# X; ]end9 i7 |  C5 a2 ]( N7 [. n  e

* C% v& R. E% v1 xto setup-turtles
' f# s: B) J& I  T; y! vset shape "person"7 c8 v+ }' A0 ]6 E$ Q
setxy random-xcor random-ycor
/ V* z( m7 b! ^- Bset trade-record-one []3 a; W2 ~0 y2 B4 `" M5 V6 G
( c. y2 A. E& I; F- C1 S
set trade-record-all n-values people [(list (? + 1) 0 0)]
/ d# |! J/ U, w: j3 A
. l2 @  m( S# V* J8 y, f9 C
set trade-record-current []1 e& v, s, m& p' t# p  i+ S
set credibility-receive []
2 f' m, A/ y3 {  L( t% l( \set local-reputation 0.5) R% ]$ p& m9 r! O. y, S6 a( H; \, |
set neighbor-total 00 C4 e+ W1 O( J$ i$ ?# `2 N7 D  f: _- S
set trade-times-total 07 s* k: C7 I! Z
set trade-money-total 0; w8 [4 h3 j0 c2 l% \
set customer nobody
& N; g7 u. |  ~, Bset credibility-all n-values people [creat-credibility]
6 O# Q  q. o( X  Q' b2 g1 t) `set credibility n-values people [-1]
3 ~# q! I$ U! Y2 }/ Vget-color  ~& X! _4 K! C4 H6 E3 p, a" J
" |* @% D. z! H
end
1 `8 E- j6 {% N6 N- c9 A5 f( {- a0 u+ `; P' w
to-report creat-credibility
# N& q$ e' V: Vreport n-values people [0.5]  E8 C* h" ^( y8 e3 ^
end! k7 r+ U' e$ Q$ @- J
7 Q, t$ c( w! Q. L; C# i
to setup-plots
9 ]1 Z9 A3 Q- g, |+ V* s# ^
7 }( b- t. N' I" t! }' ]" w0 oset xmax 30
7 B: Y* _9 z5 d7 ^7 M/ {- f

) t* i4 Z$ z, Y: c( |9 Rset ymax 1.0
0 `* B5 n5 T/ H" z& T
) ^1 P1 d! y( Z2 ?1 G* f
clear-all-plots
( m8 A+ u3 j! n2 P3 d" c' I

0 k# J$ N5 I2 V- |setup-plot1
* g$ p# Q- D0 @7 |) M" I6 `
2 R; @5 O& v! z6 m
setup-plot2
5 T7 ]: j1 s& u- q# t# a9 {! z
: e5 r. O, w* X0 ]+ V# z3 s2 d
setup-plot3
9 ~8 V3 e* a2 A* e' j( N
end4 }/ ?% _5 J' T% I4 [- d

! @; Y, f3 q: m1 A9 G  b5 H;;run time procedures- T" _8 m* F+ i0 q9 n9 v

( @, E! {) k/ w# mto go9 F# E2 w9 I3 k. U( A
3 e2 }7 f! @% `5 I' ^% {/ Q/ ]
ask turtles [do-business]

9 X3 x( H8 j) ?& Cend$ j* ^, a0 L7 R0 S# `  v0 Y

; ~6 }# Y+ Y2 l0 n2 t/ [* c  hto do-business
* l0 F4 a4 @3 O) ?

6 N8 `" E2 K. _' ?6 w) ]; U- x! A) k3 k9 v& G% ~0 ^  V
rt random 360

' }& L# T7 c$ F8 N( s' Z" }4 v: m' H6 _" r+ \
fd 1
+ n- c: M- u; K* t' `: R  P/ j
8 ]% ]" L* P; c% @
ifelse(other turtles-here != nobody)[
7 ~0 R4 N0 P# x) w! H" i

# M0 _2 d, ?0 Hset customer one-of other turtles-here

0 o" S9 d# g5 ~1 X! f1 Q7 }* N- Q& G/ o9 y, O( Y( r, }
;; set [customer] of customer myself

  b& }, M2 j3 l* |# k% k! P) a& V0 `8 V4 A1 V& R
set [trade-record-one] of self item (([who] of customer) - 1)0 j. ]& U$ ?2 O# w4 d8 v" z
[trade-record-all]of self& T4 G: f0 C8 {; \/ b( ]- k
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

/ F9 e3 r- e9 b7 u8 S2 {  |9 O% ^4 ~# Z7 M( u
set [trade-record-one] of customer item (([who] of self) - 1)
: H: q$ U0 r  j! o, t  D. x9 `[trade-record-all]of customer

0 c3 o5 H% j' s  F8 {/ r8 E1 }) X1 O
set [trade-record-one-len] of self length [trade-record-one] of self
4 h  T( c( ^- @$ l" B4 K  k

, |; M& a6 ]  v& P0 ?4 n! A" ?$ m6 x+ vset trade-record-current( list (timer) (random money-upper-limit))
9 u9 |; J8 J8 `. v
+ v9 y/ N& J4 G7 `$ E! j; \
ask self [do-trust]3 t$ c8 S& ^2 h0 }7 A- B
;;
先求ij的信任度7 e5 I. S8 j! @3 V+ {! c4 E

( M& h) C) i- [if ([trust-ok] of self), Q3 |) d* A2 M: P
;;
根据ij的信任度来决定是否与j进行交易[
, `5 r( m2 N$ i) P7 v' Fask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself8 |5 d; Z+ }; e! }; ^& ?
" h7 d/ s0 R. R, I; I6 f
[
, p7 }( q4 S! @4 ^6 V4 P

9 ^5 N% z' j3 i* E9 Qdo-trade

5 i# q- }# l, S# [$ v* g( f" P* r! r% J, {  S  R! K8 K  a
update-credibility-ijl

) [7 C5 W1 J: t( L) c- d# C" y2 q3 e% r
update-credibility-list
/ m; w% z( H1 ~: F+ p
  a* K4 n) s' F+ A; X
' d" k5 r" B( v
update-global-reputation-list

* l. d: l( G5 r- y
/ _1 @" G6 [/ o" I+ W$ Q( U) I) O5 Rpoll-class

. Y" z1 B$ T4 {" x9 M4 d4 F
/ b# L' w* O( S1 Wget-color
. G% }& J# Q& |& [. n' y

- t$ e) I, Y; V2 x1 Y; @) i6 }; i]]4 o- S% e3 e! w7 L

' a3 F- d4 Y2 R3 [8 _6 L3 f;;
如果所得的信任度满足条件,则进行交易
2 x3 k  t  K/ t6 S6 y% V; U1 W, u: J8 O1 F/ ~/ R4 D1 y: c
[
. x9 q" u" X0 ^

! a0 v' e4 Q4 M' t4 @* W: hrt random 360
) c4 [. A0 a$ h+ B: ]% \/ x
* O0 S! S$ R& `) X) a0 D
fd 1

& W- B; T1 Y  Y( ^7 i
; l* ?1 w9 o5 H& D# r5 E]

/ X& ^6 V; X4 o0 V4 X1 W* c% H; ^5 |5 [$ ^1 |+ a
end

4 w6 X- P0 |- G9 r" i0 |2 z$ ^, l- N5 h
to do-trust " {. i: F9 \! ^& o' E9 p: c
set trust-ok False  D1 r4 B: F' J  r

7 @* p4 u6 j' `( l* o. b, q
+ F+ w) J! P. [, Z" }1 X) s
let max-trade-times 0
6 X& V  c0 N" oforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
* B* x. ~8 I/ t9 z/ Slet max-trade-money 0
% C+ O# }1 b: V, M1 z' @+ Mforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
& v, y! ~+ b5 L& a) [1 Dlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
: b; f' p1 x' i1 s: t- e, n, y  ^: N0 ~: q3 w: r* L: d
" h6 ]( T, Q  f. ]/ v; L; U" {
get-global-proportion0 d. m( J0 f3 G, ~0 s+ `4 z# z
let trust-value
3 l; e, `4 v0 {& S) L* Nlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

# R9 N; u4 W0 f9 ]& X; Rif(trust-value > trade-trust-value)- I) a+ @: H' ]% {. `$ I4 s
[set trust-ok true]4 d5 C* C2 _: y5 M/ X
end# Z8 w$ v0 I/ D1 P2 s1 o

. A$ _. o: q% [" J. `9 Pto get-global-proportion2 @  u6 j5 }4 \. V7 _; F: W
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
' z9 a4 j9 `9 J2 X) J  u5 Y[set global-proportion 0]
* h6 k( R0 m  U9 ]# E$ m[let i 0% k& j1 h( B9 t7 k) b, d
let sum-money 0
+ W- }7 W% x  T' b. ?3 Rwhile[ i < people]2 c0 g5 R' l: g! @+ h# b! k6 u0 X  Q
[7 }+ Y7 n4 ^' S1 P0 E  C+ U
if( length (item i
$ `  [: k$ B) I/ ^( L1 \# q[trade-record-all] of customer) > 3 )
  q; w/ G( X3 v6 m4 I( u
[
  E/ Y* @( @/ V4 S  f! T6 {set sum-money (sum-money + item 2(item i [trade-record-all] of myself))5 {1 y* `! l* T6 R. q: K
]+ V; @7 |( G4 d% h. D+ r  G% k4 y
]
5 _2 }+ B" R$ J0 I. xlet j 0$ s4 O; |' [& g2 f( q' p# k
let note 0! F0 g. @, E$ {& ~/ S
while[ j < people]7 M# ]0 j# V6 a  p9 r0 x
[& y+ s& @. r& p, }+ Z  h3 K
if( length (item i; g7 U. h) v3 ^& a9 ^3 O& l! U: M" \
[trade-record-all] of customer) > 3 )

3 B1 C/ b( s4 o- [[6 g( O* I8 v9 f& L: Z6 g0 c  ?
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
. }: x! N8 y/ ?[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# m. V; u: a. L1 R) f! O6 S[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]1 S$ i$ x: U/ ]  ~5 u
]
% K! n: U1 e; r]$ O( c4 ~* G, b" k* g1 t
set global-proportion note+ X, a# u9 Z: D2 @6 |# {
]$ d. O9 @& n7 [# X9 b0 ?
end
$ f8 _1 _& k7 e: i7 i4 x9 }8 L
9 V% h( M3 p. f7 j9 N1 e6 Dto do-trade
. v( S' d# \. E4 z;;
这个过程实际上是给双方作出评价的过程; h- T3 Y, r, u) c: @
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
4 S, D' ]% y  x3 B# t. |set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价$ s% }( t! ?0 C6 D- U6 b) V1 }
set trade-record-current lput(timer) trade-record-current
6 H6 B2 M1 ^, `+ p;;
评价时间( I0 f5 D$ s5 ]" k3 r2 |" l" N% u
ask myself [
$ v8 ^/ c) [/ ^( Q& N- Kupdate-local-reputation* K+ `, u/ a0 |8 _( T- X0 h
set trade-record-current lput([local-reputation] of myself) trade-record-current
1 B# M: H9 ~) |# ~  R) g]
; p7 i* ^3 o. o4 b7 bset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself+ l( y4 u4 T& m; R
;;
将此次交易的记录加入到trade-record-one9 o8 O( o( t' b* W
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)- W3 `' ?6 s" C' \/ |
let note (item 2 trade-record-current )0 t+ ~0 _" N( ]/ @9 \% l
set trade-record-current6 `+ V: d5 z& Q4 U) }4 D  A
(replace-item 2 trade-record-current (item 3 trade-record-current))
- `: i$ C8 K, e
set trade-record-current
4 S% z1 y+ b( y- Y/ |$ N(replace-item 3 trade-record-current note)
! r/ [. _% i) ^7 t
% u. F8 P$ L+ h3 ^- G$ X7 D4 P* t! A

. \2 h( m6 `, N" Z1 s2 j- c: Xask customer [
: R* Z( U# [0 e/ |/ Rupdate-local-reputation
' `3 d7 B1 `& @* ]/ r+ d( V: Pset trade-record-current
3 c& A/ [! w8 i% Y7 ^& C(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
+ B, Y6 ~% }4 Y* ~0 ?; t. }$ Q: Q4 S) A
]8 Y4 Y  z' Z# n7 t% m1 w1 b

. _+ ?$ o; u4 T: s! \" |

5 A% k: T7 R  G4 V! s9 sset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
* S- |: R. z; ^. |" s" b( o) j5 P
! L8 f/ o3 E' X1 `
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))9 {) j6 t8 e: c, \" N/ d3 [: ]
;;
将此次交易的记录加入到customertrade-record-all) L2 ^# a% ^2 E0 ]9 u8 g) J
end9 l, S5 e1 |2 R: Q
0 c+ H) E- c+ Q6 C8 P' H
to update-local-reputation
' n% T3 ~( Q& O! |/ O6 R. Y/ jset [trade-record-one-len] of myself length [trade-record-one] of myself
$ t" g- g& l4 @3 H( s- K1 T% f' L2 q1 ^/ h- x7 P6 Q- A- x  z

% k6 h( z# g; H;;if [trade-record-one-len] of myself > 3

9 q( H8 x. F+ W  E" C- l! @update-neighbor-total% t- l0 _3 P  _0 }& G! f3 s4 T
;;
更新邻居节点的数目,在此进行
# u7 |+ x+ w* vlet i 3
- }+ B! w1 j/ J% i3 ]2 M* @! T5 Rlet sum-time 04 G7 f' c- F$ V: P8 S! C6 m
while[i < [trade-record-one-len] of myself]& c- y; |6 G( G7 [
[
# u- i$ j5 k/ Q  M6 Y" L+ ~set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ); v9 k, f7 S( v- V* `
set i
5 a% p4 s+ }, W( i + 1)
3 g6 f, i9 ]% m
]5 G4 ?$ Z* C' ~
let j 3
0 m+ m# g9 o2 nlet sum-money 0/ h0 r$ P( l& o
while[j < [trade-record-one-len] of myself]
: [5 ~* n" O! G, ]1 \[. k0 Y: z" p( w( w5 f" M5 s
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)4 Y# }3 c9 h' s( ~" Z
set j7 }- v0 P. x3 @5 G
( j + 1)

/ v1 f* T9 }* t% e$ W2 L]& }( ]' g9 G: Z0 X' [
let k 3
: a3 @9 L6 t" w' z) Q$ _+ hlet power 0
/ K) j5 g! _; K: ~( t2 b" ^* {* S! Mlet local 0: M/ k2 @3 a, l
while [k <[trade-record-one-len] of myself]: O3 s7 q% p, t' T+ r
[: f4 t7 T+ _7 V6 a
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)   A6 c" b" Q. z. _3 f- U4 f- n
set k (k + 1), z# M, F+ A( b6 y! @" |
]
/ ?% \! x5 J  t5 m; ]* Lset [local-reputation] of myself (local)
4 {/ B/ R3 j# V. D% o$ d2 B8 iend; i% z- A, r. }
) L& c( I/ x) ?& z4 m
to update-neighbor-total
; C7 L9 [5 x0 j1 |7 N; G
9 L4 I5 v' _! c9 f( V7 d) Bif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
2 Y* Q/ c2 j7 |) E5 K2 c  w" Q/ |
) t! P/ v+ g8 |$ s* P, ]

8 Q7 d( }$ S+ Lend5 }- u* ]9 @+ R' y+ x. @4 Y" Y6 g# Z

! a% M+ q: Z* v; ]$ b8 Ito update-credibility-ijl
9 s3 v0 n4 ]- i, B" ~  _1 f, _" w- w, d
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。7 e, {% Q6 r" Z5 z& H
let l 06 Y$ D7 M2 j2 A. {$ {
while[ l < people ]% x$ B( e) g$ R" z
;;
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7 m6 h/ |: m) ^7 R3 [% Q. \
[0 a" Y7 l3 O& v. V, s7 A
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)* w! r4 ~6 G5 _' O) Q
if (trade-record-one-j-l-len > 3)
* F% o" s4 _' Q2 {/ w& l! f+ v1 q[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! |3 N- H) H) v% r" L! n% E& t- }
let i 3$ s7 l1 J/ c4 o, D. @7 A
let sum-time 0. r& v8 q) X6 n9 @2 A/ Q
while[i < trade-record-one-len]
  h# O) x5 z6 S7 j8 t0 l[
# G  ^" u7 ~1 ]9 S& O9 qset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
. u5 K' q' }/ i$ }" [, v* n0 f2 J6 Aset i" r$ p# b% O8 n* _, ^/ y# N6 l: O& [
( i + 1)

  O  \: i" i& n* {/ k1 e; \- u& R]
  e' D9 p0 X) alet credibility-i-j-l 0
1 i0 N0 P- @5 I; y8 I;;i
评价(jjl的评价)
$ S1 p3 u( n. K1 P* Vlet j 3, I8 F& _" Z* R: d- j1 Y( h
let k 46 r$ T* x: Q# y# `9 }
while[j < trade-record-one-len]
+ z3 R! ^! Z! _: l) f' ~& [[
+ a  i) w+ p$ y* u8 pwhile [((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
# g1 O' H# P* dset 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), ]" `8 q1 `4 d0 ~. V. f
set j
9 V2 k' P% G6 k9 L) q( j + 1)
9 h4 g3 R: ]+ U+ e  S( }
]$ s2 C$ L& n( y0 ?3 U9 k
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 ))* [' q! B8 M! Q

. l" g% z6 Z8 Z+ N0 z; G& U

/ m" H- f/ g& G" I1 u% L/ ~) Rlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))/ I5 l* O/ _( N3 l! x
;;
及时更新il的评价质量的评价
$ R( U- U8 Z: `% d' ?) Uset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
, q# U) H: t" S1 x: l: Y* N- wset l (l + 1)- `; u  E$ E7 K$ i2 a4 a
]
( ?) ~7 P: I% \% @6 M3 @( Q. x/ b: kend( w$ X9 l8 V- W% E1 C
0 U# U: X# ^+ S) a9 d% E
to update-credibility-list
3 o: z7 ^: |- dlet i 0& Y% N7 V: D; o$ I
while[i < people], p9 z% x5 J1 Q% j
[$ U6 P+ V9 R; j+ p; f# I" E
let j 0
3 c! ^. x5 o# D  G2 s/ alet note 0( M9 P) J9 F% F2 [" w9 C: X) Z" o
let k 06 A+ o+ y. ?+ T
;;
计作出过评价的邻居节点的数目5 _  K- [( O3 ^  a
while[j < people]1 c( h* z# Q5 t1 w
[; P9 j5 a, ?$ U% i! C/ G  d  x) c% R, J
if (item j( [credibility] of turtle (i + 1)) != -1)1 g6 \- V& o4 r' v; Z
;;
判断是否给本turtle的评价质量做出过评价的节点
0 h# ~: q" q, i2 \[set note (note + item j ([credibility]of turtle (i + 1)))& ~9 Z, z$ j  J5 Y8 v1 v' u
;;*(exp (-(people - 2)))/(people - 2))]

% `' J2 d9 _( z9 {& |# r; uset k (k + 1)
2 \7 Y0 U: \; G5 ~- @]
& _" i4 m& i4 Rset j (j + 1)
, _% `: i/ i5 h: E]
' W0 l0 W$ f, zset note (note *(exp (- (1 / k)))/ k)/ O& X. C  _! |" z: p
set credibility-list (replace-item i credibility-list note)5 K% T. N3 B9 v0 Y1 G
set i (i + 1)
9 ?) _0 k" b6 m, N1 _" \$ v% G]
( |5 f3 z% ~% C1 H. }  Wend/ j) U% Z* y+ k% n

1 _. G" m# N) o) z- v! B3 [$ ?to update-global-reputation-list4 O: k9 p5 k+ V6 a( o
let j 0
& i& h- o2 R: Nwhile[j < people]
' a+ p% B" K! E0 A) q[! {2 K/ Y) A. S5 {1 g+ J% v
let new 08 }( O9 Q0 Z4 Y) r" Y
;;
暂存新的一个全局声誉
/ P; Y) r+ B: A9 ~0 olet i 04 ^! R: B- w2 \$ s3 ]. U) Z7 v
let sum-money 08 @+ j& h  r; u% C5 \8 K
let credibility-money 0/ H3 g( _* `8 ?/ d
while [i < people]
* t: m  E" y; a) u) @) V[+ C* n& x6 R% M+ t4 v+ ]+ K
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))8 L, J% ^# ~$ B: T0 O0 m( B
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
; k% L& k8 U  i$ I6 ]" V# [set i (i + 1)# B8 l! G6 D" J$ t4 }
]# _- P; g' j* z
let k 0  \' s) W5 o  [; n9 v( M9 C6 C
let new1 0% C# O9 G5 k1 j/ G8 l
while [k < people]
( t7 M% L% G7 w8 F[
" t8 I& H  \2 s: s& Z& D. jset 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)+ P+ M& ?' z. W1 L8 c* N; X; T
set k (k + 1)
, R* V, d' y# ~5 B+ L- d" Y  y& n! B]
1 B6 l( a6 a' |2 @set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
% H1 T8 }# C2 G& F9 ]" I. wset global-reputation-list (replace-item j global-reputation-list new)
/ f0 D: _! h8 K( i8 y2 Qset j (j + 1)
: O8 t' J$ Z& u: u) T5 e]4 s. n% `0 D1 ]; J$ q
end9 s# M% Q) D) j1 k8 q/ A8 A0 |
  [; \: }2 R$ F) W

4 S! q- {  A' g2 z) U% W  a; E7 _! p
to get-color3 S2 u" W" m3 W

1 a' _2 _" q9 n7 {- e6 q5 t9 bset color blue
2 c2 @7 R3 D% F. b
end9 _9 L6 y! j. Z
6 p  t  I  T* n/ e7 C6 |) `
to poll-class. ^; c& a$ X  ^" h! C
end: F9 S8 i& V, i9 n
: b- |0 l6 S% U2 i; q' p$ X  N6 P
to setup-plot1
& [0 k$ P; x) n- l1 y
% `% m/ _. x, X. P( Qset-current-plot "Trends-of-Local-reputation"

; C+ a) }& Q, y0 T) `  ?! C3 {
3 T1 c9 Q8 N% b, Z4 q6 e( b+ s" `set-plot-x-range 0 xmax

7 ^( K- @2 n- s0 c8 B* c; U3 B% h, j" o3 ]
set-plot-y-range 0.0 ymax
( [( h# R  X2 B) F; E, a1 C# R
end4 l1 \1 v1 p: X. E$ o0 q7 |! L

, i4 T9 W. w: ^: f& w; y) u. l0 ?( Bto setup-plot27 c8 C, ]- ]# C* b# m0 X! r" F0 j

+ v8 \+ R. P: qset-current-plot "Trends-of-global-reputation"

% w! `% ]$ L7 _. e
. W2 ^' c9 N6 [6 Gset-plot-x-range 0 xmax
* A; I3 p( }8 j+ o4 b' U
8 Q3 i+ P' a5 \& ]2 y: K( B9 _. T& {/ ~
set-plot-y-range 0.0 ymax
5 r4 X2 [/ r6 W9 ?) ^  k
end
7 |1 X7 i6 X7 B  O: P6 H3 H5 p3 _
to setup-plot3
/ C% w3 w: E0 N& @, H* A2 @% Q" p8 B0 j# |& z
set-current-plot "Trends-of-credibility"

# G4 c7 H$ D; g0 n8 P; S, w2 `+ s8 {5 Q1 }- P
set-plot-x-range 0 xmax

2 w7 D, B+ A: E4 Q5 w! ^
3 X; P& ~! ~" bset-plot-y-range 0.0 ymax

5 ^- a6 B' v4 a4 qend
- S( S) v. I& q% z% W# Z7 a$ V2 K) R9 x7 i3 {; k) t
to do-plots
9 n1 l$ N  v; wset-current-plot "Trends-of-Local-reputation"
1 Q+ c$ ?; [0 Gset-current-plot-pen "Honest service"
# q6 u; e5 F% f5 wend$ A- }: [: q( I& `/ @

; o/ ?5 t# ^0 x- c! |% O' e[ 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.
  G7 b& E5 S) y$ T) u
; c6 f; ~* c' _. \- K- x2 d0 F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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