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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:
# l$ c& }3 @# V4 m  gto do-business
" V- L# P( ?* m rt random 360
4 l# w: t- i& X, s fd 1
4 x& ~$ d: |, V  y ifelse(other turtles-here != nobody)[( m4 G; N/ L$ F& \$ N  I
   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.# \- K0 V! C, h0 `* y5 K
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    * L, \, [0 Q8 p2 B2 t8 U  r
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer+ |9 l  q$ |1 j+ D. U
   set [trade-record-one-len] of self length [trade-record-one] of self
7 n+ q! [" R6 U' Z% G& a   set trade-record-current( list (timer) (random money-upper-limit))
8 @4 l' v! c" j9 |1 t  O# w6 L- s$ E5 X  b. c' T' a( `) L$ f
问题的提示如下:  G6 G  w/ _: J# `' U  P
# Z" P8 a+ G+ E6 h8 M; M4 p7 K
error while turtle 50 running OF in procedure DO-BUSINESS( T( P. e4 K4 H! P$ p
  called by procedure GO, Z3 Y+ T! O+ o* r4 y1 ^* B
OF expected input to be a turtle agentset or turtle but got NOBODY instead.1 W& `7 A( D+ k% o
(halted running of go); v; |& ~3 ]  z2 M+ Y' p

9 q; q/ \9 ~3 b8 p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~~
& ]! P5 x5 }6 @1 W3 ]# ^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) m8 w- J) a: D& g( T, ~
globals[& R+ o5 b: ?( Q: W& _& d' Q4 Z
xmax
  G9 H' X& Q  h) d  zymax% v. d$ y. @* v$ l6 {5 n: p! p
global-reputation-list  `3 v1 M, ?* s- l* b) Z
! O6 Y) @# M0 e; l6 p
;;
每一个turtle的全局声誉都存在此LIST
2 f3 o. _! c! F. T: R3 P, r# Dcredibility-list9 L4 q- z/ {$ y0 x* Z% f* K5 H
;;
每一个turtle的评价可信度- p5 K, }3 N; U& J! p7 }# Q
honest-service
/ ~( R1 U$ C9 [; j  T; Wunhonest-service
4 ~, g' m. n7 J- E- t. M1 a( Eoscillation8 U# u' d3 N% K+ ~
rand-dynamic
, _9 d+ a5 K: D" O+ R1 ^]8 ?; t8 D9 q6 M' c

  d4 e7 f5 P& l6 F# p. W9 Rturtles-own[
' D+ ~" _# j# j( ?( }/ E6 Ctrade-record-all
( f* O* X; v4 u9 r7 r;;a list of lists,
trade-record-one组成0 C. `+ i1 x- k" m
trade-record-one
1 O3 c# v, Q9 {# G" C2 R4 };;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
# R& k, _7 e' y2 a4 C: m! M7 b5 D/ x# F- U3 \: r7 A
;;[
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]]
' y4 w+ r5 z4 Z! U* L2 m  Ztrade-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]0 a1 n# g  n6 _  i9 G" h
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! c, I; d) S$ S2 U
neighbor-total6 y1 j" [8 W9 B) {5 P8 z0 t% J
;;
记录该turtle的邻居节点的数目
! L) n5 P3 O! P0 t; S7 v* K, s, qtrade-time- `( n) a3 I+ h! ]
;;
当前发生交易的turtle的交易时间
8 V* B' D4 J2 q  Bappraise-give
5 k2 P$ Z* f: D$ N! t;;
当前发生交易时给出的评价
" A! e1 R, s, y2 K+ C& rappraise-receive
' l2 ]) n  W7 [  Y" v/ c0 t;;
当前发生交易时收到的评价/ o) J* {  B/ A& T, ^
appraise-time
9 S1 ~7 c. s; W;;
当前发生交易时的评价时间
6 X, D- Z) f' \. i; V$ dlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
5 b2 i8 x4 m  X9 y4 A) }. D0 ^trade-times-total( U0 ^7 l8 A! R% E) J! `" u& Z3 I4 U
;;
与当前turtle的交易总次数
) }9 R& S& F3 z( e) k- ktrade-money-total$ m0 N" y8 Q& o) L2 w
;;
与当前turtle的交易总金额
5 a0 ^8 G/ h' \! [* S! H  x' ~local-reputation9 m: M1 Z! P/ H; u7 O! [$ |
global-reputation" k1 U& Z. u0 T# p& v- p8 G8 L' f- Z
credibility9 Z: q$ X% j( C5 d9 J
;;
评价可信度,每次交易后都需要更新
( P# r* |, L" ~2 q- E8 S  M7 Z( Icredibility-all
6 i' i- [: F$ ?3 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
* h3 \3 m1 k1 \- I4 {/ l, J+ r3 B3 S
;;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0.54 x' G( X6 J8 P- u
credibility-one
* C# u, h. k* R2 {' `; e. X* N;;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
& k% v) c: k: ~  S1 gglobal-proportion- N: M5 G/ b1 G; \1 h
customer) O+ W: U$ E) H3 i0 d) ]$ D
customer-no
1 B  v/ Z) c" A  I( w+ g, Xtrust-ok
4 K) f" v$ k+ q. A$ @7 e6 mtrade-record-one-len;;trade-record-one的长度/ s0 Y+ o! `) @3 ?
]1 H4 W6 v! P6 Y, f9 o/ {& i2 |
% Y/ z5 M3 {, @5 N5 c8 R% ^. X
;;setup procedure: l. s3 V# m( w0 z

/ n4 c" Q2 j; C+ B* M& F! U+ @to setup8 _4 f. u. G. n  N3 F' ]
/ r1 i! P4 @) O, ~. p
ca

# B# L9 s# {* \) u4 V0 M& J- P
1 U2 F: t: X" F- q8 b; C0 K1 jinitialize-settings
9 F! ^) [$ }& k- S1 w3 D4 ^- V+ o

& E& |* ~1 y* s( W- s/ vcrt people [setup-turtles]

/ T' y' i1 v2 ^1 {+ V1 ?6 F, V
. b6 N8 e% v. v$ Q! J' ^/ c' ?reset-timer

  h: a! f2 j/ u$ W! M
6 X1 |1 }  r3 r7 I: o. o  X( Lpoll-class

9 a7 ~! o/ r1 I% G: U# c% z! T6 J" M1 ^
setup-plots

5 h! H0 v, u6 q* G& b
7 ]0 W* q8 w: G4 t+ p! Udo-plots
/ s3 ]5 _( G2 S. \1 V+ `1 z
end4 D6 @, K5 z0 @. x3 D2 a

. e/ a6 [  k% B4 w- ~6 _. bto initialize-settings# v+ a6 p7 p  `& ]  G0 x" \

9 N4 x/ I  j. dset global-reputation-list []
' z( g6 ?1 g0 A  C  V6 L: @

5 p" m) j5 K# s) k3 `) \* dset credibility-list n-values people [0.5]
8 P* W) u! A1 c1 {1 [
' p8 S7 D* C- C& @
set honest-service 0
  z. g# B  ~. U# T) O9 K/ ^

) Q$ a( l1 g" U5 T% t, D+ k9 ?set unhonest-service 0

, v/ Z4 \" d2 J
, I' ~+ `; ~$ @set oscillation 0
3 V+ ^; p0 q/ [, m2 K1 T' b

  v: O; E" H: X+ a% n' T% n. A1 Sset rand-dynamic 0

$ `8 ]- n8 N" ^# U" `! f7 o7 j# C# Rend
2 N# R: f7 C# j  \) e) D4 v1 s& p- \5 L
to setup-turtles 2 }1 p: m: `) N* r7 K( @( v
set shape "person"
! ]% R! `3 z% {3 f' U! usetxy random-xcor random-ycor
# K7 B! J* B3 W0 ]! \* Xset trade-record-one []
* Z6 U9 }. p' f0 w* ^% w/ w' d
) ?! x( T7 R5 d0 j! F
set trade-record-all n-values people [(list (? + 1) 0 0)]
9 |; H- s' h. Q3 v8 I3 N# G9 J
( h# B& Q/ s6 T# T# z  G
set trade-record-current []0 y# y. f4 p$ O; s' B) R) {1 L
set credibility-receive []
* `' O, j$ c4 ?9 wset local-reputation 0.55 U. e4 S& |* U: R
set neighbor-total 0
& K7 S9 c5 _5 s/ Oset trade-times-total 0. a7 _: O% `6 C8 i
set trade-money-total 02 L" i. O& K% V- a% _$ [. K0 M: `, ]
set customer nobody
. u8 Q: S4 h0 b4 q1 l! oset credibility-all n-values people [creat-credibility]8 t' k) l2 Y3 C% Y8 j% c
set credibility n-values people [-1]
2 q% b" K/ U/ }/ f" jget-color- k' z" ~% l; P# j
# \% ~9 I$ a$ ?* M& o* z6 a
end
$ H; H* P/ _- t2 {, z& c) z& X9 f
to-report creat-credibility
5 T& o# u; k0 u  [report n-values people [0.5]
! c5 ~9 _  e8 k( _5 @% k! Zend/ m- D) @" c8 f9 X4 o: w2 X
3 m: s" f% |- l
to setup-plots
) ~$ U, J- O$ x; |/ F0 Q) ~5 p6 O
% x" y1 V" m/ e; P' h4 Z" ^set xmax 30
. C/ l6 e$ e; P- P( {# w  _3 |

7 P, z- U  W0 l' _7 b& yset ymax 1.0
9 L- C+ F$ _5 T. ?6 W% |/ V
3 H9 h% e6 g3 J; X) j
clear-all-plots

$ g5 p' I* K" F8 j, \7 q- E3 P4 ^/ k$ o
setup-plot1

+ [  P& ~9 x. b6 x" d2 w& c. ^. H5 n' [
setup-plot2

: q" ]! s5 \3 [3 B- G- z* \, z
* h: s9 E& k' V2 p5 D& @3 Qsetup-plot3

- }1 k4 M/ y- s; l2 y  Bend$ J5 C1 x0 f' @. l" i
' d$ n# [, h& E+ m2 R
;;run time procedures( [* n" T$ `0 M- N3 f
3 X& l: i5 D# p# a! C  |
to go
% @! a! P, D2 Y" g+ _. W; q: i9 h8 l- k9 s9 j
ask turtles [do-business]
. p5 c) ]: f1 v4 Q! i0 F
end
3 w/ P' g8 A# E1 Q9 _2 O# Z0 \; T
to do-business " p. }9 N  }7 l; K9 l, G

3 B) ^) [8 d0 q* b6 ^
- N. l0 I$ E' G2 x7 c" p& Irt random 360
, z+ y1 Y% }' u: w
& |$ R) @7 s* n+ V
fd 1

% T* ]8 L+ Z) U' u. w
1 g* I$ U$ s( M# Yifelse(other turtles-here != nobody)[
8 `- Q2 z% O9 ?! [' e7 Y& c+ B) I$ ?( L9 p
- X/ _9 ~% @" ~7 U; ~. {- F
set customer one-of other turtles-here
' k  O) t1 A2 x& [8 e9 E) ?
9 K3 _+ u. X; r- `" Q0 X& k3 |
;; set [customer] of customer myself
6 P4 k6 g4 S3 x  l" M
! \2 `" O* T* J# {2 W! z$ D
set [trade-record-one] of self item (([who] of customer) - 1)
$ `4 M' u; E0 K  D( m[trade-record-all]of self
% S" @& P; n  T8 p# x;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

0 `4 H% s* H# s! \8 h4 z( G  l, g2 b& c3 U% U
set [trade-record-one] of customer item (([who] of self) - 1); L, r7 {* t  V" i9 c! c8 k
[trade-record-all]of customer

- V* Z9 K6 h6 `% d4 }, n8 T& [* w) O' P
set [trade-record-one-len] of self length [trade-record-one] of self

! j3 r: p) t. G- V( h* _& D2 a) |1 R9 ?
set trade-record-current( list (timer) (random money-upper-limit))
. q) M9 H' M* Z& U

/ T# c$ }6 Q- b8 Y, z. [1 Wask self [do-trust]" I0 ^0 L4 D& c2 o4 h
;;
先求ij的信任度
8 N  E! ~- L+ {! v- A
4 ^( K! Y. {) Dif ([trust-ok] of self)
: D0 T% O: G. E! S/ ~: ?;;
根据ij的信任度来决定是否与j进行交易[* N7 [) J" H; O, e7 E1 N0 h, Q
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself# p' u7 c* |5 O/ G* f3 x- l
4 |% n3 H. o. t! b5 C, J0 j% W
[

3 }7 F0 {2 D0 S  v2 N; U' \# U* `
- p, q* M; M9 I2 P1 S* {do-trade
. s2 c9 @$ R0 F! r4 y, F" ~
9 |' e! ~3 ^' n. [# \. f! H5 l0 j/ A
update-credibility-ijl

" V( J' z# ?8 ]) y! @: C7 Z
7 C( I0 W3 {( r% L( Supdate-credibility-list# ?5 ]" ?+ w6 @& E' G
$ ]0 N6 t( x2 A7 ?  M8 c# k
# F: X3 f% K1 }; t: \4 Y
update-global-reputation-list
" `" S# B: a  g0 a

0 E4 e! s; c: lpoll-class
$ D9 l! _* m0 T7 R7 s
8 L7 N7 |* Z# N. y" [
get-color
2 u, ?1 }: K1 l0 S4 B* c# e: N, O
: y& i- S1 Z6 w; c. S
]]
. x1 a) k  S7 u3 B4 b& n0 Q% w
/ |, S; d  {; q# U  c8 n: R! |;;
如果所得的信任度满足条件,则进行交易
4 U, `+ y8 u' g$ i# [  ?. f8 I  A
1 w. N3 C3 e" t; `0 M[

+ q+ Y0 |% o- F* L1 O6 V* O, Z6 f8 F! Q+ e8 N2 j; B
rt random 360

. ~# L8 L  R4 j$ w8 G3 _$ G& r! P  l! Y6 \, x6 G
fd 1
& D% u2 _1 q# f( h+ z9 q5 J& ]
7 m" n' H; a( L9 |1 U9 \1 e
]
/ R( Z2 y& h* u9 e/ [0 o0 ~
) j4 t- L8 J, [; }
end
% ~, N  |" j2 ]
* R$ H- q5 E+ c4 N
to do-trust / A' b0 ~- {( d. P" e
set trust-ok False
7 c# N' U3 `( Z0 D8 ~7 j' W* _
( j6 F: j4 E0 T

; D1 n( ~7 y: @let max-trade-times 0! C8 x% g- S. |  @
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
! t' ?) f, T! w( w# \let max-trade-money 04 {: g" l- o9 j# Y
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
5 R/ Z( H5 r3 w7 {3 y; b7 clet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
2 F8 }' p3 u2 M6 S+ a+ r- X& U% @" h3 E" q- B% X

- B7 }. G1 r: ~  _get-global-proportion
, z8 R$ x3 d2 ?, ?let trust-value0 J0 ?: D% G6 N& 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)

% U2 S7 n" ], Y  jif(trust-value > trade-trust-value)% ~7 a4 ^. r' f) U1 H  v2 |
[set trust-ok true]+ r; O$ l0 c" ~  h1 z7 s) s# h' c4 c
end7 p5 N5 \6 F- C$ l; Q+ `* Q
0 F) W' ~4 U5 J) j: A& Y; P
to get-global-proportion
8 d4 s6 b( R, {: Q8 u5 R2 m$ y5 jifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
2 O2 |& C8 g! i4 D, Z6 ]) Q[set global-proportion 0]: M  _, \5 S6 i$ m" ^
[let i 09 H! T3 {1 C: N- G9 M
let sum-money 0
/ n8 s. T' @6 T, Jwhile[ i < people]
5 k& }2 Q# k$ n/ h/ ~4 n( w[
* r% [! Y6 @- c! Y4 k  oif( length (item i
" R: g# J5 c1 P% b& G7 k, \7 F+ O[trade-record-all] of customer) > 3 )
% i, I, y! T- x
[- E! V# n9 G) q* D5 s  D2 o
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
+ h. ~, [3 L  j2 D0 M- a]  k6 K. q  `8 M
]7 R$ L$ Z6 q* X' _) P
let j 08 u# a, f& b+ Q( V* k
let note 0/ r7 o; O, W1 \
while[ j < people]
% K! z' N0 x& G1 l2 |2 p[/ r% ^  E9 k9 ]) p! G' l
if( length (item i/ F8 b5 e; Q; ]3 V, |9 s
[trade-record-all] of customer) > 3 )
4 N9 ?- F) p9 k* ]0 x
[
6 W* z1 g7 m/ I) N1 T; R: ~" `3 \ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
0 ?2 t# g: T4 v0 c+ V[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
, o  x9 @+ h/ M[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
4 h* E4 w. G. _' g# \]
/ E- z7 w4 u( a+ ]" y( S1 w5 w]
! E& E8 b1 S, f* ?: k# lset global-proportion note* H4 ^. d& Z$ U  X) f" |
]+ E" r. R  ?4 [! k& W+ \3 P
end' \# `2 g- n- C# f8 r

4 u+ V* A+ M6 S- e) I- E) xto do-trade
7 r/ k; b& Q* m8 Q;;
这个过程实际上是给双方作出评价的过程
* S0 m! v. ?# n4 Wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价, Q0 U3 O, Z% O2 L
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
( P" p# `' m5 ]! a6 @7 |: a+ jset trade-record-current lput(timer) trade-record-current
/ y0 D. R. m- V! p$ u4 D/ G;;
评价时间0 r# n/ @, \& X* |
ask myself [; H$ ~! ^$ M* E- q1 r, |
update-local-reputation4 F- M# B# b, a, k8 {" D
set trade-record-current lput([local-reputation] of myself) trade-record-current) E4 r3 ?2 J) G) A
]5 L8 D5 c1 B' Z8 Z) L5 G
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
0 j& U. n" ~' i/ a0 `0 w;;
将此次交易的记录加入到trade-record-one
# i' e) m% T) ]$ g4 Y/ E% ^set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)) w8 U# |# i1 n# i
let note (item 2 trade-record-current )
( @* Z1 `; E0 k% b3 xset trade-record-current# j0 P% {& v) U8 w: X& [; _
(replace-item 2 trade-record-current (item 3 trade-record-current))

- N' v( m$ k' ]! i5 f3 Pset trade-record-current
8 I' w9 v! b) x7 X9 l( l1 |(replace-item 3 trade-record-current note)
' {6 {* M1 ~% u; p4 z* E1 n) x- E. J& r, X! o& M

9 a+ G2 A* D/ R, }4 T% {$ R" Cask customer [
( Y. W1 u8 `$ h& o/ y; h/ s9 Gupdate-local-reputation+ S; y( S4 n. }6 g( N: g
set trade-record-current
# I6 P" F1 L. [9 d7 d/ K4 n(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
4 A, U' }+ j- ~2 m4 r! w+ D
]
+ v& r: k; e& w& |4 k
7 C5 u+ E8 Q0 c! n. h9 o

7 o, b  T, m7 G; Wset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
7 ]6 N, E' }: `7 ^6 ?& i9 }

. B  U4 a; W9 f- X) u7 s/ pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
/ O! _( v/ q  I9 @) e- b;;
将此次交易的记录加入到customertrade-record-all
7 G$ a2 F2 k# t& @  Q: C# Z3 `( \; q: Yend
( j# h: v7 _1 V+ n8 _( ?! j$ a" }6 K" F& z& k
to update-local-reputation
3 j( W% Z2 e: T6 G* rset [trade-record-one-len] of myself length [trade-record-one] of myself
4 e& f$ A5 A# v; d0 M* G* e, @" q/ u7 h9 D" g$ B: T
/ ]6 ^2 w! {2 j' p; }
;;if [trade-record-one-len] of myself > 3
1 c' y; f. p9 ~+ s, @) C* [+ b
update-neighbor-total
7 T* x( X' W  E5 Y% u3 b7 Y" o;;
更新邻居节点的数目,在此进行
7 u  ?' b) \( P; \/ z) llet i 3
4 H: e8 p+ S2 ]% E* mlet sum-time 0
; d& s. X  V/ a5 g9 o7 I8 C5 Z5 X( o% ^while[i < [trade-record-one-len] of myself]1 z7 b) _& g8 u0 ~
[* M" H% g' w2 K( u
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
* c4 N3 D" T4 u5 q4 m* r8 Oset i
3 g# S8 s4 r6 K' _( i + 1)
1 V: i# m  ^3 F: V- U; O
]
4 }( |# ^9 h8 i3 Llet j 3
5 k" s  ~7 @& I: Elet sum-money 0
1 R, t- u7 v/ Z7 {4 Z) o% f$ e( T+ u6 ^while[j < [trade-record-one-len] of myself]
" }& M2 l( d" F& ]( g# c[
% {# _" {7 P; pset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
0 I+ g+ N' o1 N- s. kset j' s7 r* {+ Q) |* h8 S1 r) r
( j + 1)

) _) I, B% ~- ~  w. A]
3 w' e% _! Z, p5 R' C  Olet k 3
2 Y6 f( U: H3 [# H, elet power 05 O; s8 ]  {( c& g* _6 ~0 p
let local 0
1 h9 G4 ?6 t6 bwhile [k <[trade-record-one-len] of myself]' h% ~( O5 w) D) e- F
[% g* [% l. S, a! s
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) + T. U% C) k0 X0 d2 g1 ^+ d* b
set k (k + 1)
3 F8 K4 k  E" i* p]! C) T, J. `) w& {/ a9 h; n
set [local-reputation] of myself (local), ~) O' ~. \+ p, O& `$ V  v. F/ D; H
end
4 D4 G2 p6 S# S
" _/ _9 f/ A5 Tto update-neighbor-total
1 \' ?& O4 }- L4 R
9 G+ E: p% F5 `* C9 Iif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]. E' l+ p6 [( n/ a5 Y7 M  ~
) f6 v) H4 |# }; z/ S, t+ N

0 O- x9 l- f5 o2 Kend( i. P' ^1 R  b: _5 H9 G
1 B- w- k5 F3 c- i# p  L
to update-credibility-ijl
* v" Y3 o- f7 S  H- }, Y
3 R3 }* B) O) ]3 A( F;;
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。
. N; \9 F0 m: g  y% Vlet l 03 M2 k9 h& r3 B& O9 i; C1 o
while[ l < people ]
3 h3 U8 |- L. D% l3 v$ x;;
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/ `# W0 E, [5 h0 R  L
[& i! e9 J- E: T" d& \
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)% S# m  u6 r# n; z  s* m
if (trade-record-one-j-l-len > 3)9 V5 L, k1 A6 ?  }
[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
. l1 D3 A; s8 J9 ?let i 3
" p2 v) |  q7 z) F# y  u% j2 glet sum-time 0
! V1 [  {3 g+ u8 E3 Cwhile[i < trade-record-one-len]
7 u) r  |; Y* }  y! v2 [7 z2 ?# n[$ p  L, a8 L# Q
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )& _( q) x& Z9 M; I
set i
2 n: S; G1 t  |# E) k9 Z( i + 1)

' A0 u  h# h. ^/ ^0 ^]
9 Q1 D7 Z4 }" o3 @% [" |7 ~( wlet credibility-i-j-l 0& a: G9 A: ~: H' W! W; E- @
;;i
评价(jjl的评价)5 ^8 o' S- L/ e+ O) q4 u5 S2 @
let j 3* n, X$ J$ C; E( [  y6 |0 M7 [
let k 4* F  j1 `) K' c6 g! K& i) K5 w7 G( j, o
while[j < trade-record-one-len]
% J3 p6 G' m+ \) x- j/ y[
9 }( G' }5 W. ^/ K; |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, s8 C: z/ h- q6 b* N, K) T
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)) L) Z4 l0 e; l
set j
1 x# J. q, s4 `) `3 E5 o& w( j + 1)
5 v( u1 R* b. j
]
# B: E) t9 h8 \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 )), D3 b' @$ s+ U0 e1 K- Z

* F" L1 t5 q" q/ V" u, u

  s  Z" v+ v0 w$ Z* |8 ylet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
* U3 g) h  R/ @; Y& Z! L6 v# Q; Q* b; o;;
及时更新il的评价质量的评价: w: V9 P, b2 V- w( w
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]- v0 S& ]! J7 ?0 u6 P* Z8 E
set l (l + 1)
( V% x' P$ a/ I, D# k' P]
" a8 D+ H: n* I' n- hend+ [6 F3 k7 ?' b, e7 L8 ?
' h6 _7 b+ R( \
to update-credibility-list
  e5 B$ ~# ?+ U, n8 llet i 0
8 c* n. @% Y! k2 j, k' _while[i < people]# k! W8 U# |# s; ?; U  H
[* b3 z' m8 c, B0 t5 y( M8 x
let j 06 n" s5 [) O+ P( \
let note 0
) D4 P0 L, ?& e5 ~$ N% P# r# |let k 09 f' s1 u8 [' R2 R0 X5 p
;;
计作出过评价的邻居节点的数目  ~5 H. A/ d( e- K) B1 F
while[j < people]
4 P. z% d2 U7 d. G5 ?0 Z[$ U& \( f0 t2 G' S8 t! a$ p
if (item j( [credibility] of turtle (i + 1)) != -1)& u& i/ L- {0 h
;;
判断是否给本turtle的评价质量做出过评价的节点3 l6 T. J- `: |1 u  u
[set note (note + item j ([credibility]of turtle (i + 1)))
4 q! z+ x9 ~0 t;;*(exp (-(people - 2)))/(people - 2))]

: O+ H8 k4 }9 i" Q2 Mset k (k + 1)- r9 a% {! K5 u& L9 J
]. H6 E% c5 k% p1 ~/ _6 i
set j (j + 1)/ b0 H( j5 x+ R2 E
]
" p; l2 V5 {$ Y( r2 Nset note (note *(exp (- (1 / k)))/ k)
$ J2 X; {+ F1 R; a$ t- V& v6 nset credibility-list (replace-item i credibility-list note)) }3 ^: i- v! X2 l; b! C
set i (i + 1)2 h9 g3 E+ i  L! [6 T8 P
]
: @# q2 Y: T; j1 nend
1 w& H/ _: m1 c) g& A
+ C, o' _$ \, X/ g% {7 O1 w) ~, [2 ^to update-global-reputation-list
$ j! v4 k+ x5 z9 l. Alet j 0
1 W- j1 H5 u9 l" b, ?while[j < people]
. |, B0 _% p& S: z- Z& M4 C[
5 R' @) e! T; |% wlet new 0
, t0 n) T5 e, A4 q* ];;
暂存新的一个全局声誉" {& |3 x. c2 N7 }0 e$ Y( [
let i 0
7 x& e* i/ @0 M5 L! ^# w  L, Slet sum-money 0
1 n3 i: g) c" S& Tlet credibility-money 0( ]" f5 L$ ?8 D9 X4 `! e$ t0 |
while [i < people]+ |6 F& D" D+ |' g
[2 Z) G) J8 k& S! D% o  o
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))" S: y; Z. f7 D  ]8 _& w
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
7 W  w5 L, P2 Zset i (i + 1)
) P8 \1 l) t* W' \5 d; J% ^]7 {* H2 C; J1 r
let k 0
' O: ^) f: W  Elet new1 02 V+ z3 N( y) q# r( `- u6 |! _
while [k < people]* S3 L6 X: U7 y2 w: o' H1 i+ U
[, Z, I3 f7 C" T
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)5 o% [) b8 L4 b  v3 ?9 n
set k (k + 1), k7 l9 K, [" }. }
]
5 ]8 |' \9 C, s' v7 e+ P+ d( Hset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 4 l1 i' C/ [% Q  e8 w
set global-reputation-list (replace-item j global-reputation-list new)
7 j5 b+ p( g" |set j (j + 1)+ @. l/ W/ N$ v. q8 g. \% d! a+ \
]
" U& }  D/ ~0 u* Pend
4 V: {8 ^* D3 V7 f; i8 Z" n- o. a
  @) h& H$ U- R( g0 r* V4 r. Z
) j6 d, @: P' M. s. z1 M( v1 {! ^% ~6 J# u: k% `: ^' j
to get-color4 F7 d; U1 a8 ^( r) w( C5 o
* g7 U  J; I0 g, t+ x8 H
set color blue

- t9 D. ~( [' h- u" @2 cend
5 ], F5 }4 G5 l8 Z. e
, F4 U5 n/ |* L/ xto poll-class( `7 N1 J  Y% x3 W8 U
end
3 P7 j' n4 v0 d4 Z9 {( d1 e0 T; ~
" s- q& @3 W3 Wto setup-plot1
/ |) O+ G; [+ U* u( \+ y' c( E/ C9 ~$ Y' s  z! n
set-current-plot "Trends-of-Local-reputation"
. m( F* u- M8 L' J, g' a& {# Y  S% I( N
: x0 |  Z/ C4 \5 d
set-plot-x-range 0 xmax
8 H4 u- t) r' v' w! M1 _& v
: p5 L. M! ?, P  [4 Q2 B( L3 y
set-plot-y-range 0.0 ymax
2 L0 X% _. I( y  p* [5 y" [
end/ y# u' R6 t. Q* [; j  z9 p
, l' |( C9 w6 `8 O# f' E7 n& h7 m
to setup-plot2
8 A+ ^1 @8 w% u+ \, i" _$ O' S5 ~: }& Z$ n
set-current-plot "Trends-of-global-reputation"

5 W0 O" O0 g0 Q* X8 e2 \
2 b; T( E) I/ U. x2 O- J* a  Mset-plot-x-range 0 xmax

1 _/ D, k5 [- O9 k
/ b% m" @- h2 g' G7 cset-plot-y-range 0.0 ymax
( n' P- \6 p. c& i5 c( f
end0 ]# i- {3 ]( V) ^5 D# y9 B: x
9 K( W. U3 l) E: j& v
to setup-plot3: H+ I4 \+ M5 Y) G
7 O2 ?  N$ f+ m3 A5 d
set-current-plot "Trends-of-credibility"

- a! q, J" k$ C' o
- ~9 g2 D1 |; B0 e7 h, Wset-plot-x-range 0 xmax
( f: v2 |6 V3 q) Q* S+ i% z
' [; P0 ~, z2 n) t+ r& Y3 J1 P5 c
set-plot-y-range 0.0 ymax
) c+ k& d  G: c$ W; p' F
end6 @! j5 S. n! v$ ?' d# |

1 o6 [4 \9 [& m0 u2 Q7 ^0 ~1 B1 Ato do-plots1 u! g2 j% M7 O1 l: `7 c
set-current-plot "Trends-of-Local-reputation"
. i, a5 T- J+ o" o& ^/ dset-current-plot-pen "Honest service"
8 f/ k% N9 ?: E/ x. @7 cend, i( d) h7 s6 F. o6 K

& Z) D7 u' ^. E- t! v[ 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.
+ ?1 y, y$ a0 G" Q# a! P, j& N, R
6 @* }0 ]3 D1 f0 v: 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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