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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:( c' k) |; M# q  v2 F
to do-business
) I- t0 o0 Q( X& O7 R" F6 n rt random 360
$ M6 P% K* W: Y" ]( s" O/ P: ~ fd 1
& V! _4 Q" p$ O" C ifelse(other turtles-here != nobody)[
+ S8 F9 q" n3 v7 c2 V   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  ~" k4 q, a7 \/ e8 w: F
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ' R& d# R  p1 U: F
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer, b2 a! Y1 |. R3 N- z' |! ?
   set [trade-record-one-len] of self length [trade-record-one] of self% {+ ^. L" Q  S0 H) P" Z9 S8 ?
   set trade-record-current( list (timer) (random money-upper-limit))' t8 V3 _8 W# I+ z- m
! B6 f% ~- S) R- a3 h
问题的提示如下:% M& ]4 q. w7 v' z( a

. l3 R0 f7 x4 V* xerror while turtle 50 running OF in procedure DO-BUSINESS
4 c- A" G( A+ c% q# H: O4 Q  called by procedure GO$ ^2 z) S8 w/ i. E) i3 m9 Y
OF expected input to be a turtle agentset or turtle but got NOBODY instead.$ _5 }" a2 B: \$ s4 e) }
(halted running of go)
" l9 B1 d. b& c( Z+ }" v# m: h$ a. L3 ^8 V( L
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~~9 Z- |/ y) y) A, A4 |/ y6 `
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/ J- ~6 `6 E5 y/ q+ t; E; K' C; k) o
globals[" m: J( O. b1 F( \% J/ X
xmax) q. b1 ~& \0 I* c1 L8 ?
ymax
/ D# h- i5 g9 {6 g) oglobal-reputation-list$ [- m# Q2 p. O$ }; }
9 e( t. `, m+ e9 d
;;
每一个turtle的全局声誉都存在此LIST
) o; b0 ^6 K2 B- v4 \% Qcredibility-list
. z" T+ a  s& K& `. P$ L( k;;
每一个turtle的评价可信度
) |" m; G% x: Dhonest-service" k/ I4 X% _& ^5 q% j1 s- z
unhonest-service
2 @! ~0 ^4 q# B! z, V/ ^- hoscillation
& p# Y! e5 h2 xrand-dynamic+ s9 N5 w. [: Z2 W( \
]6 W7 Z, w5 w% r* k; E% N
1 S/ ]0 ^5 w* z
turtles-own[
. o2 k3 i5 M# l+ ktrade-record-all% o! p( s' q3 G( ~4 u, C: ~1 E
;;a list of lists,
trade-record-one组成
; g+ k. w1 k5 k+ r) Gtrade-record-one
& B, q' O* v# x& K1 u2 D;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
8 m9 F: {. u. C+ |$ _
' f2 t7 J/ ]" B3 c, L3 W;;[
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]]2 X$ W6 m& B* l) c2 {! t6 |
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]
1 U  [, p( X' i7 f. M! E0 ncredibility-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
+ N3 H9 `2 |& K6 h9 Dneighbor-total2 S$ h" [, N+ M2 Q0 k& X! K
;;
记录该turtle的邻居节点的数目
. C) }. B. b. A/ R: s) Ptrade-time
  o* T2 p3 P* S;;
当前发生交易的turtle的交易时间0 G# P# _; I( i9 v
appraise-give/ \6 P7 n3 z# Q: D/ c- N4 P# {1 o
;;
当前发生交易时给出的评价0 O% f8 F2 A) |8 O' Y/ n) |
appraise-receive
9 Y0 x; x! l2 v  k;;
当前发生交易时收到的评价
  E! j" c' M, nappraise-time
* p! M( V' R8 {# f0 b! a5 S& J;;
当前发生交易时的评价时间
$ f% f. B/ d. B7 |" [9 Mlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉5 }) z0 `8 @; N- B
trade-times-total$ A" N8 I: ~+ a! M
;;
与当前turtle的交易总次数5 S9 T& p7 h9 R* k
trade-money-total/ y! Q+ a9 k! z- P
;;
与当前turtle的交易总金额
3 T1 n: g) _" j& Z. K2 clocal-reputation
/ Q. l& M$ f, @, V. ~! m3 `global-reputation
! t8 v( q" l1 ]1 _' l/ Rcredibility/ B/ {# V3 G3 I# M: d) Y
;;
评价可信度,每次交易后都需要更新
/ R6 [1 P  i" R6 j4 Y, l$ ucredibility-all
! |9 k; E& s, ]' U5 k; p; P;;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
- F* k- p0 d+ T1 @& U- d9 Q) V3 j' X
;;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" w5 W( R/ ?' [8 K. g- I' }  _
credibility-one
8 y3 i: H+ B  q9 |;;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
9 G+ K5 P# \6 U  S( A- u  Dglobal-proportion" o" ]3 l' j5 [3 B2 Z5 v8 F2 C
customer
4 d* s" r" x  N: J* N# Xcustomer-no3 H- P8 `; G( \$ b
trust-ok  A( Y7 b5 C( x( }& I; }
trade-record-one-len;;trade-record-one的长度
% H- P1 b- l) m+ M6 t]2 H1 U, t; V: t
# ~4 D& T  h/ U6 s9 s% K3 o
;;setup procedure
  `: F, V! [! n) {  ~' W7 x6 O1 M6 J' n; L% O& u
to setup) c& ?; k2 i0 S( C! B$ H% h& A! [

2 b( o6 ^% l5 cca
, o1 w/ P' D2 g- K

6 b" H0 b; H/ G4 W4 i: hinitialize-settings

# y0 [2 d/ H% y1 J% Z/ g5 A0 V2 P' V# U, y  t
crt people [setup-turtles]
+ g; h& P7 p$ r* ^# o

& g" G2 ~7 ~) n' `* C7 Dreset-timer
1 K3 i/ x* F9 n9 ?8 v$ ]1 X$ n
& h1 a3 v+ B. J" Y2 d9 z0 B4 n
poll-class
1 ~, A" ~, k4 d& n) c8 @

9 Q% o# i: o" U  O' zsetup-plots
1 T6 T- _1 H+ Q9 l. M' o
6 x& [0 s$ C+ S9 z
do-plots

3 m7 `+ A+ P9 |end
% d$ m6 D1 n, S3 I% m# W) e1 Y; S
' q- W+ N- `3 g: eto initialize-settings% `4 Y2 a( V0 G( J6 k5 b2 k

" X* W) j: D$ K0 v5 Eset global-reputation-list []

# G' ?  A1 r$ x( ^5 C4 N4 U; o) `3 b4 t* f2 q
set credibility-list n-values people [0.5]

9 n! @/ ^5 h* z) M
- ^4 J$ }% W0 N' E% [9 p/ gset honest-service 0

& a/ ?' M" C) x. e) d6 e  [: B2 H3 p2 y9 O7 N, a2 s
set unhonest-service 0
) V* |+ J: ^8 e' l% Z, A; R
0 j1 h& K% K0 x7 L# g
set oscillation 0

- j1 X2 q( J4 }! S
+ M8 l% Q* k# B) N1 Dset rand-dynamic 0
! J. X9 n" L+ c4 \3 ~8 o2 v
end! ^& i5 X5 i7 O' I3 [
  b0 u3 F6 _, {' L% k+ X
to setup-turtles
  y( @4 ~2 c" R9 U( V/ u# U5 Z% J3 Iset shape "person"
. m$ e3 [8 }! c) S9 t2 s- U2 y  n* A9 |setxy random-xcor random-ycor
# c* B9 C) c: q) R6 cset trade-record-one []1 q8 T, l  S7 j& H

7 T& \' x0 ]4 N( U' s$ ?set trade-record-all n-values people [(list (? + 1) 0 0)]
4 q) r1 |9 z/ F$ F& N8 R

2 P8 u  }7 h& z1 u; v4 {/ vset trade-record-current []7 S# n: L! A/ |" Z0 }; M+ O; O
set credibility-receive []6 ^# n, {* A$ Y# ^: G
set local-reputation 0.5
3 A* Z1 P% W/ O3 a( R, nset neighbor-total 05 Q" T& N6 M# _8 q
set trade-times-total 0% t/ r; A: r& h. V; {( M1 ^0 w
set trade-money-total 0$ l& O( h! o) S9 E( _  R" n9 a! O
set customer nobody
, c1 F) ?9 _7 s9 |) \$ o, mset credibility-all n-values people [creat-credibility]" R" b$ C& @- W# t
set credibility n-values people [-1]$ H2 ]" z- `6 L$ i' _: M- S3 e
get-color) y: }' ~, G7 f0 |0 l) x4 y

4 J+ S, G) _# R' H/ z5 c1 send8 D: q. }3 m& c$ \1 t( L0 W4 L

7 x/ u1 z' G* s  F& n; mto-report creat-credibility: L3 y" B" s# f" c' ]
report n-values people [0.5]
  t: z9 B5 ~' T. K2 D( m' b4 C/ Lend+ g2 F5 S; g" U" y- F, i
! V. B$ M2 W! _9 _
to setup-plots0 Q5 w3 c/ D" u2 h1 q; R

/ v8 ~9 r/ R7 U8 m% iset xmax 30
$ a+ j/ I' x! g
3 r8 b2 T% U  @7 d3 Z5 q4 W' @8 F
set ymax 1.0
+ N9 E! x1 {% t0 _2 u  h
% W, @" Q$ o1 _% I" ?
clear-all-plots
0 t* x! Y9 B$ @; w5 l

. z4 p& y, W8 s$ @3 O9 L; g/ Rsetup-plot1
8 D) g' d9 A3 C* O/ Z' q1 M

5 e/ ~( w7 K! B% U3 ]setup-plot2
9 M9 p0 l0 }" \3 [1 J+ c3 [) {

9 W1 v( @! `( Jsetup-plot3

. q2 S6 G4 u; b' G% z8 D! ]end
4 v6 _1 I. R. x+ Z5 o* D; T
6 n/ b2 e: ~9 e" K7 l5 X1 P  h;;run time procedures
6 {& T5 a/ [( l% n1 e& c
7 _( n$ M- u2 b& ^8 {to go5 B# |4 r1 j: g, e
) t* a6 Q3 v; U
ask turtles [do-business]
. M# T" c5 |3 A
end9 [$ d  X% b. z* s
/ c: h, t, |& [" ]
to do-business
+ A# p2 X* O/ x) b, W$ d

' r2 g; D1 K- Z
* M: n6 }) P, frt random 360
) [; u2 z4 t' Q0 _1 \( g9 W

) c: N3 b0 D) W! U) o, c: Z, O8 mfd 1
7 j7 ^" o5 V- s6 z7 s8 p. `
) X) v5 T, V' `5 C
ifelse(other turtles-here != nobody)[
% U/ D) j, y+ }
: Q$ ^2 g( S* I1 p; ]: E: ~
set customer one-of other turtles-here
( V+ p; d' e; N/ V
$ t/ F# n& y2 `$ m5 ]; t
;; set [customer] of customer myself
# s" m; O, V9 n9 G5 @. T+ J

) }9 m1 p8 E) X# |set [trade-record-one] of self item (([who] of customer) - 1)
0 U0 a' E7 `! R4 D2 l[trade-record-all]of self
/ H* F5 ^- P$ d3 O. l: ^( r' y;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
, E4 ]! i5 R5 g( p

. z; v0 \: r) U7 sset [trade-record-one] of customer item (([who] of self) - 1)
/ F- C6 U0 H3 ~0 Y[trade-record-all]of customer

, Q4 k; ~! m- s7 N% b9 ^6 z% a. Z  D. ?& w
set [trade-record-one-len] of self length [trade-record-one] of self
5 O$ ~$ @& G4 r' n( |% H

1 m) @. F% k* Cset trade-record-current( list (timer) (random money-upper-limit))

4 D! \7 R9 l' L) F  v7 ~! V5 y( n1 t! R$ T! S! ^
ask self [do-trust]" f: y. c( I. {3 P( e! ~( U3 u7 Q
;;
先求ij的信任度" t9 |" \2 X! A- c9 Q* z# b
) ^6 @8 s- X4 ?  M
if ([trust-ok] of self)% v6 w# }% T5 k
;;
根据ij的信任度来决定是否与j进行交易[
$ m- A# p! |" V% Xask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself) t# [) @, g7 O( Q# I0 }

$ C0 S; f+ ]; ^- ?- \/ h1 d2 T0 ?[

$ R! ]; h1 o( X/ l, M! `
4 F# p+ r$ d+ ^3 @& Ydo-trade

) @) @0 \, b! Y- v: U( E" K( \
9 D* P& |" d5 [$ @) K% r  r- Xupdate-credibility-ijl
! q) n. {1 P: B$ I
8 r0 V, c5 `0 g( X3 X) O5 I* P
update-credibility-list$ A/ |- Y$ h" M; \9 T
; G5 l0 |+ X6 r4 ^' E
: ^/ V2 _/ G2 j( d7 |9 t* g/ r
update-global-reputation-list
5 t  q3 R; m+ h

( r0 V1 a, o( L" M+ Tpoll-class

) s% x7 ^+ {# r+ f5 E! R. ?/ d# a* S, J; K: A+ D8 q! \9 Z
get-color
( z' U+ b! a/ ^+ A

1 U. ]! e. S; i9 y/ t6 h]]
2 S% ?3 W$ m% z! l! j, J+ J- ^/ m: g
; p- a8 d& ?+ G2 w9 Q;;
如果所得的信任度满足条件,则进行交易- H. E# z1 H) b7 d0 b# J
6 @4 n. m7 ~& l! f8 |
[

9 F4 v6 U- D# S0 K. Y) E) d+ \5 M9 e, ?( y7 K( V
rt random 360
8 z# u( q) a; M* Z; F( O
9 w* }* j# B( |1 |
fd 1
0 G/ f& Q; L4 I  I' C; |

( T4 E7 e" {9 D% r. ~]
( l4 V* I+ H( |. l2 v8 w! D4 Z9 G

2 n  q; `7 l- n: uend
9 ^/ Q+ ^$ j) n3 `: v

6 @7 d/ {( Q! Qto do-trust 2 Y2 K% U* v  S) V5 q; Q0 u
set trust-ok False
/ B3 W5 E7 T! M) z# I8 A/ \
% o+ d+ r- S/ Z' i9 f4 c

/ b7 ?9 b( N% Blet max-trade-times 0
, O+ ~. c1 L2 x9 s" T: Q2 U+ b* z1 fforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
8 C" }9 G: M' E* n5 ilet max-trade-money 0  E  d8 N+ R: U6 A. p
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
3 I$ @5 h& e$ m" H4 z) m7 }- {& @let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
; F0 f/ Y6 v0 U$ G+ h4 |2 V0 B: S: F/ s! u( f

" q. y% `3 p3 z+ {! `  Pget-global-proportion
, Y' x) f, D$ Y7 }$ Dlet trust-value; d" |$ Q7 T8 V4 [# r" V
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)

5 E+ z; `" h: O' a2 y6 A" h: Aif(trust-value > trade-trust-value)  }( @$ k  q- l) _0 r0 R
[set trust-ok true]
, Q; X# @) R! t. eend7 u# B+ P8 {0 h" y
; F0 D& G. i" @  N3 H
to get-global-proportion
) S3 c2 q4 n) v# c- W! eifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)$ n/ L- O! y# g5 W
[set global-proportion 0]' m2 J; @! a' C# h0 n
[let i 04 i* d% J, p  y, e" H2 l# _
let sum-money 0
! p9 G; J8 Z4 |0 P2 owhile[ i < people]
( ~( O$ [$ S' K* m' J, e4 W7 R+ u[
- }; G! b5 j. h0 r' G( S9 Qif( length (item i7 E( q; ~9 P0 t, @) k
[trade-record-all] of customer) > 3 )
- `! G' V1 Z1 w
[
7 V$ k! D* k- x# z8 d) r% B, Kset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
# h  d: @0 c% J% v% e  f]/ x! R5 O+ Q5 W) w2 x6 h' u! K
]" y; {# D3 Q3 C- I7 e) W0 @" v- A
let j 09 ?0 ]) `; u, K# z# f( n6 L) G
let note 0
# t, ]* P& {$ D$ kwhile[ j < people]
3 B% @6 t5 B/ }1 ~9 Y[; a9 _6 e; ^) M6 u+ \/ D3 A
if( length (item i
$ `. t1 m+ P$ ~$ B5 h/ g[trade-record-all] of customer) > 3 )

, F1 ], o* ~4 k3 j8 r& n+ t[2 s: u+ U  X" I) a; e' p2 S+ |
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)+ _1 \, r8 x0 z$ f; b: l/ y
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]# j. V$ G4 O! L0 W! A
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]4 S$ {0 g% N$ a. j( a
]
2 i8 N  o3 _+ O9 q$ Q2 ?]
4 A  @1 P8 b/ x8 @7 Jset global-proportion note- H) q! p8 y! p" W8 f% K, @8 p# t# D
]
, m: a. O- c. \1 G- lend
3 s6 m! p, J7 G; W
# o6 ^1 C% y5 g2 ]& Tto do-trade3 q8 I2 s, [) c9 @1 I6 ~$ u4 _8 Y
;;
这个过程实际上是给双方作出评价的过程9 M6 @' e( L, r1 V
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
) U  L# `0 g/ nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价8 ~! i) y. j  A" u$ H( j
set trade-record-current lput(timer) trade-record-current: H- o# z: R  {4 n4 ?
;;
评价时间
4 H8 ~' X  `% x& K% fask myself [6 w! B! @& A, M* Z4 M( ?
update-local-reputation6 B8 A5 y' R# V- V
set trade-record-current lput([local-reputation] of myself) trade-record-current; J- M& S, z6 T7 S: r  w( N; F( W; R3 [
]
9 ]( ^$ D/ N  E3 }8 M0 G& Pset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
. m0 l7 o; y- f;;
将此次交易的记录加入到trade-record-one" H: ~8 e' `$ Y0 R+ U5 {
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)8 u8 r6 M/ S3 F2 N; ]4 O5 o9 b
let note (item 2 trade-record-current )
7 ^) a, d2 F: Nset trade-record-current% l/ }/ v. |5 k9 R/ @  ^% r
(replace-item 2 trade-record-current (item 3 trade-record-current))

) Q) `# Y& r9 ?9 `7 O* Lset trade-record-current
5 o/ |% b: P6 _, e(replace-item 3 trade-record-current note)
8 l* t1 W2 R, f, U1 }7 W& S, l
- K7 A' Y1 g. ?9 ~/ M6 z

4 m5 J6 z- K# cask customer [* h- \$ h* G9 H' k
update-local-reputation, a8 ]$ ]3 e* ]4 v8 H/ G& U) h
set trade-record-current
' Z2 ?' Y0 U  u: g$ u(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
2 G4 F% N: }& h; g* ?4 a% S
]) ?* M( g8 d) ^# p# s

& K3 }3 v: i9 E; l+ v

+ u3 k2 W6 h! i: iset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, R: Q5 C0 g( I* e+ H, }: g8 M
: [, }) C/ @* ~# E& a
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
6 ^# c; e. X# Z0 [;;
将此次交易的记录加入到customertrade-record-all; |  j* q  J, a# S! z( [6 C4 ]! J
end
- R* [  p. `/ y& f6 Q, Y# U
4 S5 s. {! Z, ~# eto update-local-reputation
0 F2 H" y) Y/ e* b8 \: u" Q& [set [trade-record-one-len] of myself length [trade-record-one] of myself
4 g6 U( b1 J# ^- ^( Q" U1 G: \' |7 \: c6 T4 q3 C9 s0 w3 K
( f$ {- K" ~/ _; o# r" V
;;if [trade-record-one-len] of myself > 3

1 _, G$ [& O9 Z- D# V! hupdate-neighbor-total8 C9 J& p( U0 O9 |6 b
;;
更新邻居节点的数目,在此进行
/ u- i0 F. z9 J0 ?" r7 @let i 3
' s1 f7 M% ~/ a: X9 W2 Tlet sum-time 0# M* j/ L7 M% a% w9 m$ J, L, q
while[i < [trade-record-one-len] of myself]
( N/ q  X6 r" T$ `[
* }% ^! b, b) w* g2 V4 X5 e, Jset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )3 c7 t( m, z9 g, @
set i
) A* p* O! }: x* s; t* W8 B( h( i + 1)
" k+ H* l* ]2 _; Z3 L8 h
]- K% D; R& W/ W* x
let j 3
0 Z. {4 W" R* ]2 Elet sum-money 01 G; y) \( o& F. [9 c( L* N/ B- n0 r
while[j < [trade-record-one-len] of myself]
6 Z/ u! S9 D; z$ Z$ U[# R- d# d! R- y1 I
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 M, `) K, M8 P( H- i" a
set j( Y$ |! x  U$ c  v9 A
( j + 1)

$ s5 V* X' H% ^; c]) h2 B. j5 @* H9 U$ |0 f
let k 3! {6 R5 s5 |3 ~. q9 G. t% Y/ Y
let power 0) b6 E. n8 W3 |
let local 05 G( g( h% }2 e7 g4 ]9 N
while [k <[trade-record-one-len] of myself]
* g, S) x$ V! t7 Z  X, P' _. n. X[
- n0 k7 [6 g; i, m' _) lset 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) - H; U# H5 C' L$ N! b
set k (k + 1)
  C  S' u8 U" I' L; S]
$ i& [, N6 z9 J* j: o( Iset [local-reputation] of myself (local)2 _4 x& `% Q+ b6 a1 s2 [/ I
end
" A! N# Q9 |" P; j, L( @. B5 k7 y/ X7 S, ?2 x% Z
to update-neighbor-total4 O  \3 z7 Y. H5 J1 Q) t

: h$ W; g7 j0 K# K7 Tif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]# W2 N) A+ `3 H5 s2 l! q- d
- n( ^$ f0 s1 \' C9 f: @1 e+ L

! C9 T  l( }- c! r# Pend! Y, C, k5 Z  X& t8 U
& c. Q. |( T; Y( X7 m
to update-credibility-ijl
* p6 `( z) i3 G  B/ u- @4 i3 x. g$ o2 v2 i+ I$ y1 N9 Q' }) 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。
; [. P* B, Y6 J3 Z' ]7 M: Ulet l 00 Z7 [. f* Z( k# R. p3 Y/ h( P, R
while[ l < people ]+ [; g. U* H" {( d5 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/ ^# b6 X+ @# l4 P. j5 ]
[, X: |0 D/ S# E
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)$ _  M2 v& B6 T  J
if (trade-record-one-j-l-len > 3)" s) u, r# w& ^
[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
. {: a- T# L' T( v5 G! olet i 3
/ p' W3 M  I6 J  jlet sum-time 0; D1 }6 f$ g, D4 |$ c( p
while[i < trade-record-one-len]
) n5 i- }( t: a* W[
+ U* ]: E$ f) a5 Pset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
1 s5 b: z5 B' C3 z9 dset i: ]  _! [0 `/ @6 R9 K
( i + 1)
" ]/ Z: T1 n3 i9 h+ _5 f! S2 c
]
1 [3 J! q. N. c0 d) \% Nlet credibility-i-j-l 0" u  Y* C8 H0 j/ G6 d& E% Y$ e
;;i
评价(jjl的评价)
% u9 o) m# \0 B: b+ Flet j 3
. j+ U9 g9 c3 ^let k 47 U7 k- c  x# Y  [  C6 ^
while[j < trade-record-one-len]
7 N6 `3 V  H/ M8 R[# @3 i; n: C, g
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
5 c3 _) u3 ~3 B8 ?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)+ y4 q. n" N/ @, e4 d8 y
set j  D# N" y7 s1 x1 i
( j + 1)

% N! y- j  X+ ?  W1 S+ J7 y]6 _! U9 Y. R- @: q7 m
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 ))
" c  _6 O8 S! J4 b5 u7 t% B1 k, g4 h' ^( F7 k. T

; [7 u/ w  C5 i; p. wlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
; l/ a0 ~* q6 G2 i;;
及时更新il的评价质量的评价
* p7 K; z' b5 K8 N, Mset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
4 t% k. h5 F" Uset l (l + 1)" L0 w& h% H8 s: ^
]
9 G7 N$ M1 ]$ K/ P. T( ~7 I5 Kend# ~" Y+ D! j# R7 V. z' c

* k9 n% S, N6 \- Gto update-credibility-list
5 A# d& A* I0 {let i 0
) N! z: {( P- N$ h0 awhile[i < people]
( Y+ ~6 W6 }- W  K% I7 P[
9 Y8 P) k( i# J$ u7 j& S$ vlet j 02 T( }0 |+ `/ {1 W# [# c
let note 06 j% S7 n: F- P, X7 t8 Q
let k 01 G" Z4 C3 N- {4 P+ t
;;
计作出过评价的邻居节点的数目2 ^  d8 \* S6 r( j$ K
while[j < people]
" V9 J8 r' n( [! V6 d# d& s% w% h! F" i[
9 P9 A. Q$ C4 C! }" t: J" }( Xif (item j( [credibility] of turtle (i + 1)) != -1)
% V# }/ R5 t/ t+ ?6 v* I& I3 ^;;
判断是否给本turtle的评价质量做出过评价的节点3 B1 {0 ^- F$ N" ~7 z8 ]
[set note (note + item j ([credibility]of turtle (i + 1)))
# R$ g; y# x: g. R# H5 d! H8 m;;*(exp (-(people - 2)))/(people - 2))]
) D: h+ a$ l$ ]( G/ b( u: I7 q
set k (k + 1)" x, X' r$ D' y1 X7 d' Y
], i; |+ l/ ~8 E( p+ c5 c: q$ W
set j (j + 1)
0 q! G, L! |: ~5 @! \  d. N& f8 H]
& @* i4 [- y. Z$ m9 Y# O( Tset note (note *(exp (- (1 / k)))/ k)* \4 \9 ^8 Y8 x- S! O& R! j
set credibility-list (replace-item i credibility-list note)
+ m( [1 F* Q% t6 j* uset i (i + 1)" @4 R3 y8 N$ v( s! y5 ~# g! f
]
, O5 o6 g, [( |" f( u) ?4 W2 Gend
& a3 P% |( g4 m9 Y$ ]8 S. ]7 c) e9 p9 b3 B5 Z6 {& R8 ^9 j% C
to update-global-reputation-list, J; {7 l* X- e
let j 0; v$ @! g8 P5 A
while[j < people]
; U" b! ]- }3 k0 e[1 V. i/ k! Y9 a, u7 w
let new 0# V# _3 m* ^( Z  L% O) R
;;
暂存新的一个全局声誉
* `! I9 U9 J2 w% ~" }& `* s# Alet i 03 L; {2 U/ G$ k! W
let sum-money 0$ H* w. q$ u8 Z( \0 C1 o1 ^! o
let credibility-money 07 q! C4 t8 ?$ t  y8 M: H
while [i < people]
5 J, X- E( [% w' G3 z$ b[5 c4 n+ {5 `  e" Q' v$ ]. L8 Z
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
% u5 a. e: _+ r2 R6 Cset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))& H9 E/ d. v. L
set i (i + 1)
8 \* N: w) ~9 D# g1 y  N* Y]5 p& o# y4 p' @9 y( y7 d
let k 08 o) s3 j6 F7 L5 @' J  F; P& n
let new1 0+ k1 X0 R& D& J- {- _( h& w. F
while [k < people]
6 ?+ a9 M  e0 Z( w! @3 n. w[- z: v9 r0 M/ F; y/ S* f2 U- D
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)
- _# V; a/ `4 Y9 g- V" V5 Wset k (k + 1)9 s# H, `3 M% y) H
]% J9 F0 @6 J7 g" k. V+ {% D
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
' X, h& i6 |; O& s1 Eset global-reputation-list (replace-item j global-reputation-list new); h$ L. J" l* t
set j (j + 1)
/ }* g5 }$ e, p0 k]
. q( W: N% ]0 `end, y5 O4 i3 V& t% _
4 s1 [7 |2 t* f+ e
5 \8 k' o1 o( A2 `* n+ J8 _

/ A4 A, _" i" ]; ~$ R2 Wto get-color" o6 A. ~/ d7 F: m
% x  k2 }2 f; n( F- L7 k2 Q, j: R+ e
set color blue

. q8 p6 S  f  i- m& }end
2 Z# F2 N7 p0 ~# V& M- t& [& m. V/ N; q$ e! r0 e
to poll-class3 A# W  b/ j  h/ _2 N
end
4 s  t! d- D' w: i# ~" V2 \/ w% C' o! a4 I2 r1 W9 ^( \
to setup-plot1
  J3 R. {) K9 k3 x/ K* |# y$ M! s& R+ Z
set-current-plot "Trends-of-Local-reputation"
- j# k4 H- P4 q8 q5 T$ B$ b

' O- X# W  _  }# A- Mset-plot-x-range 0 xmax
8 [9 P7 m9 ~  \/ {/ y2 x! G) Q
/ T0 ?) O& [" T) I1 N9 ^' I1 R: t
set-plot-y-range 0.0 ymax
4 l. W! k- D# |5 L( u
end# Q$ W! W: k  Y$ S9 c" X4 u
" w1 w% n. _$ n; Y
to setup-plot2
- J. A6 [5 Q4 K' @. U1 |" @! z
' u. W! R- P1 c" B1 Vset-current-plot "Trends-of-global-reputation"

/ n6 J- v; v; H0 S5 K4 |; o( V+ I) A' F5 h0 X
set-plot-x-range 0 xmax

) J8 l3 e6 r. s2 `7 V  G: Y6 |2 O( ]6 Y3 j. `( a+ w9 p
set-plot-y-range 0.0 ymax
. U8 J; H5 r6 p6 |; h; A" y
end
" t/ L2 @# O) v8 f3 ^9 D( @! A9 b+ U8 P7 @! F1 ~2 X! u* e
to setup-plot3
4 W% {; L# t- c$ K  Q8 [" h
( W3 T8 n$ O9 D  y; p7 z' m& oset-current-plot "Trends-of-credibility"
* D# Q' W6 h, Q* [6 J

+ P) }7 L2 h5 e& X9 ~" ^  nset-plot-x-range 0 xmax

. v3 a& h6 U* F4 ]1 M7 y0 p0 B" D! w. h9 R4 p% y- @$ }
set-plot-y-range 0.0 ymax

5 ~  ^0 a" B1 S2 N  ~end( ~. j, y! b7 X# `" g" D% }0 p) f9 b4 R

4 A" f: `/ v$ R# S" _to do-plots$ X5 m; ?9 B: Q9 L8 U! E4 w% G
set-current-plot "Trends-of-Local-reputation"$ [  Y) m# a* [( |- |. \
set-current-plot-pen "Honest service"
0 L$ s' N' ~5 m! w. W$ Eend$ h  m' m! t  U" W* d4 F0 e. `
, x! b, h3 q7 X$ Z( \
[ 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.* r/ D! g3 {: R! |) B+ Z5 s
/ T, R2 h% r+ V$ j# ~8 r7 s$ Z( v3 I
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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