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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:7 ?7 s7 Q8 g3 _) B8 m7 W
to do-business
/ ^8 W& c' a8 y rt random 360# |+ y& K  t' y: V. [6 x
fd 1
' Z$ Y  A' {8 M' u ifelse(other turtles-here != nobody)[6 A5 |3 s6 X' t
   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./ m1 ?+ y% S/ N6 P' a% c1 V* q
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    2 o- u( }5 x; K% r" x+ }
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
! W1 s2 ?( ^$ l9 R3 A; {9 p* r' ^   set [trade-record-one-len] of self length [trade-record-one] of self% l# j0 p# Z( U% A
   set trade-record-current( list (timer) (random money-upper-limit))
4 E4 s8 a, _0 f, y
9 t$ a1 M7 G! t7 a5 Z问题的提示如下:6 y+ G7 h& M7 S. q! a3 p
8 S& |4 _6 v% H$ V% ^
error while turtle 50 running OF in procedure DO-BUSINESS* A! [/ |9 e) \; w
  called by procedure GO
0 V9 v% Q- u2 _2 j& ]OF expected input to be a turtle agentset or turtle but got NOBODY instead.
9 X5 z! Q" C% c' {' y5 z' [2 K
(halted running of go)
8 r* M$ @9 R0 U! V! w( R( v+ k! g7 K3 }/ G3 R! z
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~~% n) x, e1 v7 x" Z: f
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- V& g; B7 U& n! j/ G! ^& O
globals[
2 Y/ x  _% a) T3 ^8 axmax
1 O7 S* |* h$ W) f; Xymax2 j! {$ T& Q! @" e0 l/ m8 ~" e
global-reputation-list0 ]5 q: K* a) x; d6 N
/ m/ n8 k. o0 J* D. ^; J3 ?
;;
每一个turtle的全局声誉都存在此LIST$ U& C+ {& V' w  i1 @2 x! Y
credibility-list9 P/ r: P- U; B8 y( l4 M
;;
每一个turtle的评价可信度
' z5 O: V% M4 }) X' F- [honest-service3 i+ p0 F; E, H+ U4 _3 V3 I; M) v
unhonest-service
" n6 F7 ?' i2 }  Noscillation
# e5 T6 i0 v  n$ i, Xrand-dynamic
$ K5 {$ i, F( g$ w% l" i3 o]9 b5 v7 m; S( K$ t- ]
9 _! c, ]4 X$ n- F' F, p
turtles-own[
, s( t% @0 V+ M# Ztrade-record-all. s0 m. B  ~- I# W* c# U: F
;;a list of lists,
trade-record-one组成" e0 A2 F# R+ @) f
trade-record-one
* _, K6 w( y+ @! P;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
& u4 U1 |% j3 ^+ E" H' K9 w; V( [' b
;;[
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]]
, q9 C- r& r1 m6 W( ?. P8 wtrade-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]& n- S/ T4 V6 V
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- s; f1 Q3 P0 m6 O6 w
neighbor-total
5 M0 V- j4 M  w% X  _# d;;
记录该turtle的邻居节点的数目7 ?2 U9 \0 D& ?& |* H" ]& b0 U
trade-time
  {7 f4 y# X9 N9 L* r% G( r;;
当前发生交易的turtle的交易时间
4 X* h( x  F% p/ }2 X. E9 N4 cappraise-give' I6 D) D9 l! {, c5 d+ [8 l
;;
当前发生交易时给出的评价
$ U' ?- h+ y$ u0 Z: ], Z% D+ Pappraise-receive# O9 Q, Z: Q) V/ `6 v
;;
当前发生交易时收到的评价
! w3 o0 r7 M2 ^8 d; Vappraise-time
( s: x* U. p( o( c* ]' E;;
当前发生交易时的评价时间6 b/ `& N. Z& N/ n
local-reputation-now;;此次交易后相对于对方turtle的局部声誉. i5 Y: m% z! w; p1 a
trade-times-total1 o, r2 M: d$ V$ o: W
;;
与当前turtle的交易总次数8 T( Z! i: g8 G/ c; I0 l. Z; O) i
trade-money-total
" g1 y& o8 z9 ^% B$ {0 P;;
与当前turtle的交易总金额( \$ X; \( j! v/ t0 ~7 R) I# l
local-reputation
( e& W+ ]: P+ E  e: O4 sglobal-reputation
2 o. c+ G: p# jcredibility. U0 D& l' M, w
;;
评价可信度,每次交易后都需要更新
, A/ a* v  Z% s8 E) ?credibility-all
3 @; U/ W' g6 g; c;;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7 z8 o( F4 E  g4 a7 `

8 w' \. X1 g6 d/ z9 i1 Z! P;;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0.57 ^3 {+ A: t1 `8 \6 Z
credibility-one, Q( j, A2 ?; x1 g) M8 v3 }2 C
;;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
4 P# T  z% u7 B+ [+ O, k% s; F; pglobal-proportion% A/ }6 W9 o2 |7 E4 h9 P9 c
customer
3 V. d$ F- j; s/ G3 y& g- wcustomer-no
' Z3 {/ N% b& v0 `) a& D  |1 Htrust-ok
7 v7 h7 o- M. _3 ntrade-record-one-len;;trade-record-one的长度/ H9 W( O. V$ }0 }9 u- ^
]4 S% K8 ], g7 ~8 Y
4 O  ?& \0 S9 B8 R1 A/ f- e
;;setup procedure% y6 ~$ _) D4 G* H& U
2 F$ S* E2 N6 ^# X- }' `* C
to setup
! Z  j! U( A" E: F6 L+ q: f, J5 g  k6 ?. P" G8 V! T, p
ca

. ]( k' }4 Q% O* E* d6 F# ~" `& l$ @9 F  N" w: a2 N* }0 F
initialize-settings

# R+ Z$ y$ n8 d7 u0 t: M1 ]. k- r  K5 k# x8 p2 B
crt people [setup-turtles]
: D- c9 o$ n: b, w

, S- p. }  ^7 `2 Q6 _/ mreset-timer
' e3 v) Z% M7 z/ m

+ \) [6 N1 P4 \: q+ Opoll-class

# `' \# k2 c9 F# I% y' G
% o9 s( `& }& B0 u8 N2 Ssetup-plots

  |# `6 R  N* F2 T7 X% q* m
" W  S' t9 t7 p. _! j/ j6 {, hdo-plots

; Y" L7 a! L  T1 j; ?: Nend
* _2 o7 i  Q& V& d3 u, }& r- c4 c9 w" I% K) _1 \
to initialize-settings$ o  K5 o  v. G

' V& \9 M( I' W* h. G+ T  [) qset global-reputation-list []
5 L7 v; l4 W$ X8 V! b# }6 i! d  \

3 ?) U- d2 Y& S! p( d  Cset credibility-list n-values people [0.5]
  [8 ]6 M: ]+ u# V. j

$ O( @6 M. U9 [0 _/ nset honest-service 0

+ ^0 p, y: f$ P
. w* ]* \3 H. o. w; [& X. Bset unhonest-service 0

/ s' f2 D9 U0 Y+ A/ V6 H* D
, I( m' n! J2 h- p4 h0 \  K, rset oscillation 0

. }" z& v6 \4 h: G) {& G+ E! n
' l) t+ Y( }1 R: N! L" \5 D4 B1 Z+ V/ dset rand-dynamic 0
  |/ I! ]! V/ g
end' ?+ E% `# |# E# G2 x5 _6 u# R
: ?9 R5 ~# b9 C& C
to setup-turtles
- j3 ]6 A' C  [- e" t8 B2 ^& x% Pset shape "person"  b- S6 V. Q3 s. i. a7 o; O$ E
setxy random-xcor random-ycor2 L  [2 p1 t- `: a( ?
set trade-record-one []
- q! m* i( e; X$ ]7 l2 M! W. r
' k! c1 d- K8 Y3 D( v$ g! B8 O
set trade-record-all n-values people [(list (? + 1) 0 0)] & l+ ]5 u  x% H

( t4 C( e6 b2 e1 ]9 q' @set trade-record-current []
( y3 D/ [2 }- R; l, K/ [set credibility-receive []
" G- j6 L: e% ]# T  {( C/ @set local-reputation 0.5
' c1 s3 J6 s' g6 H* F$ Zset neighbor-total 0- r* R9 K' J: U
set trade-times-total 0
$ W! x3 W1 F& m4 A4 Uset trade-money-total 0
2 _& _% B% m0 P& m. _8 D! cset customer nobody0 n3 m* B; _7 F
set credibility-all n-values people [creat-credibility]9 Y$ N+ }" L# h9 Y: T4 r
set credibility n-values people [-1]
- j" Z$ a% |: {get-color
: |3 u/ F& X  m3 o" r
3 g  B- Q; }5 a8 k6 ^$ q! Q
end
  }8 C% g1 |: [( r. Z! L; G' \: n, W) J# M8 i- l
to-report creat-credibility( g$ X8 F& j6 a0 w
report n-values people [0.5]
6 A5 t- D/ a7 A7 {end7 d& H1 [: s7 R

( O; ~' [& p. [* ?to setup-plots
$ V, }6 H# ~+ L5 j- [; |# q. R% w
% e6 t, H: _" ~4 bset xmax 30

' \$ R2 D5 s) L+ Q# Q! o/ v  g* v, U
set ymax 1.0
2 d' Q; A* h6 A' Y- |
* I9 u0 e( H3 V5 L' R. g
clear-all-plots

' U' I& z  p# Z0 D
( U7 o7 J- U  R8 B4 V" A6 msetup-plot1

, l! _3 M9 ~. ^! _; R9 p1 f2 x# S% b7 d: F( N& `4 q9 S5 Z
setup-plot2
: l) N7 e+ k6 X' r" K
5 \; F. S9 v+ ^$ u% M9 F0 B
setup-plot3
, Z3 e0 Q2 c1 x2 u! V
end
0 v/ v" `7 ~5 a# S
1 n" [. z: _: u2 e) w# y% H) d! }5 H8 S;;run time procedures# i4 v' x0 C- X2 g$ ^$ O
9 x9 W% J$ A, [/ e9 p: g# }8 X
to go
" `  d* i0 F7 m9 `4 m' f
& g% _& m# o, s4 J6 q( t1 x# xask turtles [do-business]

0 D; q+ v5 x" E# ?" |1 zend, z' g4 l5 S" H3 [7 y

& f6 c% _: a* d: fto do-business
$ O6 }6 Q$ w7 e3 ?

) D/ X  @9 K* D1 B: K* W" v  f+ C+ L# C
rt random 360
; ^, B* I) n) r9 V; H

6 H% l% b+ R( \9 L. Gfd 1

  K7 _" k4 `. N9 F+ Z! b. o5 Y- @. M0 P; M& Z' L
ifelse(other turtles-here != nobody)[
9 K& ^- k' N, H2 x/ F

3 `% v) N! X/ u. Gset customer one-of other turtles-here
+ y. r. N# F0 W/ {: K4 Z5 X9 a

/ [8 R" Q, W6 d! c9 X;; set [customer] of customer myself

( {. j- Q* }7 o) [/ h' ^* D  a( F- I, f7 U
set [trade-record-one] of self item (([who] of customer) - 1)
' C# p0 ?# D9 i" t( ^8 u[trade-record-all]of self
/ Y3 ?9 e9 Y) n6 ^9 j;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

0 Q) M3 L0 q! Q9 M' M+ h' S7 G' X8 u5 ]3 h6 [
set [trade-record-one] of customer item (([who] of self) - 1): x8 X. J! v1 y4 @, W- u
[trade-record-all]of customer

6 {" s3 r# [5 s% p/ i+ Q( y2 z9 X% ~% o, k
set [trade-record-one-len] of self length [trade-record-one] of self

! w- k: G8 \+ D) O: g% T. @; H* e- x/ \/ n: ^
set trade-record-current( list (timer) (random money-upper-limit))
7 ~* P8 B1 j9 o. }

# g; o* }: v; @ask self [do-trust]  ^5 m2 C8 h# c1 F8 L
;;
先求ij的信任度0 y# y" N$ k% \# o) n

& N$ O) k8 S: x  u; ]if ([trust-ok] of self)8 a; k; V4 _4 X; L3 K3 v
;;
根据ij的信任度来决定是否与j进行交易[0 U' N5 H; E% E& L
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself, i. q) f( `7 b
( [4 S$ F9 M$ h) b
[

8 U( a% a7 U  e  ]8 A( `2 T  R" T, c
do-trade

; v* F8 n# d! I! O' ]# B2 q- R
$ z" H7 R* k: R7 u# aupdate-credibility-ijl

$ q4 Q& h" P& @; q
* U! q4 z- A" p: R9 K/ B7 Mupdate-credibility-list
) I9 h3 I  K1 y! k' B! m) G

) _: Z% G  C( G
1 N: b; [' H0 J: F1 n$ vupdate-global-reputation-list

! m1 s0 r7 A$ P% A( j% @, b& ]4 E4 T  W
poll-class

3 p0 @5 W7 C5 s$ q
0 Z8 [# _' S8 D" [get-color

! `% ]3 o( {! M. [& Q
# q) k6 J9 a, V- y% j]]
; j8 P" A* i! X0 `; j; E* l7 G5 V
;;
如果所得的信任度满足条件,则进行交易
6 I. o0 K& }$ S! M  L! g) c! q& X+ q& C# ?
[
# L1 K4 R4 L. H6 W& T
3 _/ q  r8 o, x* e% K& C
rt random 360

* d: J- n8 m8 @% ?( O' P; E( l! A; n2 O" f
fd 1

. Q  F/ C6 J! z8 q" R8 k  R; W3 ~. r
]

7 A* ^% E; O3 d9 `+ h' D& y: O9 P3 o/ A
1 p5 |7 @% o8 y7 V7 i, U2 E8 _end
" K, ^) s" g6 ?1 R; m

* h! g* t9 g4 f( l6 \to do-trust / b: q6 S* b8 d2 a- }7 ?
set trust-ok False7 e7 _" \1 Z) l# z/ c  a

: d5 h& ?( M7 P' q: |# o9 l

$ E/ \' u9 }8 nlet max-trade-times 0
$ Z  |) U$ c) ^0 n4 {, k5 B$ eforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
( z, \) s3 ~3 m( N0 |3 ]6 clet max-trade-money 0
  {5 _8 Q' q6 x' d, x, D% x3 gforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]6 P$ u* _  V1 M
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
( O9 C. T+ t8 \1 Q( ^0 R( t" t, v, e
% D: z# O! m+ z% n2 g

! j0 J) |# K+ j) T) Q- h) Oget-global-proportion# V2 o- g  p8 |0 ?9 p: M' @/ S5 J
let trust-value: \6 n$ x# k7 ^, 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)
: {3 o8 e' i6 S  O
if(trust-value > trade-trust-value)
" d+ }% y+ t+ K7 I+ K: m% o[set trust-ok true]
( H* L% C$ x& V3 {end9 Z- u4 ~. x0 }! Y0 a9 n- v1 R
. Q9 r# ~- \, A8 {  n
to get-global-proportion* u) H6 s5 Z, Q5 R
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
( `& T7 r" E/ g# w: R% `( ^[set global-proportion 0]
4 p. n3 q$ b! H$ r[let i 0
7 _6 A: T& P. M6 ~; klet sum-money 0- K6 d" l+ G# |8 t' Z5 h! n
while[ i < people]
: c" Y! [  N- X$ M- e" }! y8 k/ h[
8 |. w+ C5 E- n) R/ f- M: zif( length (item i2 [/ M% \. V6 u! [  {
[trade-record-all] of customer) > 3 )

1 U0 ~+ w- {" g  X: q' X' }4 _[9 _, D, z( A* ]% e, j
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
" H& |3 p" W! r& ^4 ?" u4 m]  L* W8 R- z1 a* _
]
, r2 g. n) D+ f; R) Q( llet j 01 O) \/ p; `7 I0 r
let note 0
( x; h. S; t& z% V: h- W$ {& }+ \while[ j < people]
4 L7 R1 `9 E( F  {4 O& B. U[# Z, c+ V2 _+ k
if( length (item i
0 ~7 |/ |# U+ z! X  P% h[trade-record-all] of customer) > 3 )
7 W$ V6 B7 @! Z3 I
[
, @  b- n& w; U: ~" nifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
( k+ b' j/ W& ]$ v7 a% O[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
, x: [( a" X6 N( y3 _- V' B[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]; C3 n  m; ?( g7 O  J; R
]6 k5 E5 a3 t3 u/ x8 X8 U" N
]
! W" y3 U8 W- h; d+ p6 G' g3 g' r1 |" E; Sset global-proportion note9 v% f' J0 J5 R7 F1 t8 Z
]
8 k7 Y/ Q* d8 \5 Mend% V( v! N) u  m* U2 {) X, H5 ^
% i6 A% ~, H" y6 \4 [
to do-trade
: T$ S, J, G1 G4 ^: J6 d;;
这个过程实际上是给双方作出评价的过程
: e! g% I4 K) b5 @set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
4 A* I8 X0 ?, w2 _set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价6 y8 l: u% M8 d' o& G
set trade-record-current lput(timer) trade-record-current
' r5 ]0 h+ s* i8 }+ Z: J;;
评价时间
& P6 A4 V5 x$ Z1 s9 g( Uask myself [
* E/ Y% h- @# e6 V" ^update-local-reputation# Y/ ~3 M! B- t
set trade-record-current lput([local-reputation] of myself) trade-record-current9 M* w8 J& {$ h6 B! K8 d
]9 f. N1 T. n8 y* U4 m/ J6 C0 j
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
7 z  Z2 c3 K  v; S' _;;
将此次交易的记录加入到trade-record-one
6 T! q) u, ]" p8 j& Jset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself), m; M' T3 r! H! u8 W4 m& ?
let note (item 2 trade-record-current )
* w  M0 G! }2 u6 Q0 ]' c& zset trade-record-current( I8 G  n% y3 I+ P
(replace-item 2 trade-record-current (item 3 trade-record-current))
5 h$ ~/ U6 ^1 c3 X# h6 \. _
set trade-record-current: A2 c- l) |  u0 L. b3 {
(replace-item 3 trade-record-current note)3 |: w! B% b+ s/ G+ ~  C: U- T( W

' c. H* N, h2 Q  p1 i3 {, z6 W( H2 T
- e- I" Y9 M5 `. s
ask customer [! x3 U( ?) P+ d: G, a9 F' D$ `
update-local-reputation, `. \" [9 l0 T, [6 b7 q" ~
set trade-record-current; U; E! V/ \; h. {4 e# ?
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

' }; L6 Y6 Z! v]
( l6 O4 R/ Y1 D6 W" g# k" h
+ b. D" ~; d! }9 i6 ?9 U) u

. U4 a9 r0 v5 {" \+ zset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
. [1 Y+ n/ U8 W9 q, D

5 \9 J: C2 D3 W2 Y' s& C8 \( Z4 Qset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
0 d. p( s! P  i7 B;;
将此次交易的记录加入到customertrade-record-all
3 U& }& G* z  b+ ]& H! s- f& _end$ ^3 n! `& ~+ _# y7 r
8 a. o7 \0 w7 r7 g
to update-local-reputation
* t3 E- Z6 B9 ~8 k$ sset [trade-record-one-len] of myself length [trade-record-one] of myself' K3 A# ?% [9 n5 e9 Y( ?4 _" v& x
; P( _. i) b( t

7 t+ z1 ]+ l/ T$ H8 {;;if [trade-record-one-len] of myself > 3

  O( F# C. z, V* Y  v" oupdate-neighbor-total& X/ z# |4 s  B4 C1 _4 F
;;
更新邻居节点的数目,在此进行
9 V9 h1 ]* V% H" q3 ?let i 3
! g; u; W  v4 ~; rlet sum-time 0( ?% ~/ L& Q' s& P) U
while[i < [trade-record-one-len] of myself]
9 P' W$ i# `- v[8 x% W8 h( k5 ~% Q6 N7 c: m0 l& k
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
/ @: ^. J  C, D5 \" v5 P: pset i. W* X! S3 r0 ~1 m! ]
( i + 1)
  S. f0 y" @! ~
]6 K; a7 F) Z* p# n5 [( W
let j 3
6 Y1 V1 \1 N$ }9 ^9 ?$ ]" glet sum-money 0& J  a. ^3 H2 L5 o, ?3 G
while[j < [trade-record-one-len] of myself]+ ~/ z' Z: T3 B
[
$ |( H3 H5 _& k# y0 r2 jset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
; P# E& J! c5 a; o! i. h" [set j) f9 q8 w3 l$ C  O
( j + 1)
% ?: O9 B* W; l
]& X+ f, ]0 F) K
let k 3, B; B) g  Y/ H! c  T0 e
let power 07 U( k: e5 E$ ?! S% U
let local 0
7 B8 Y7 X- `: L; o# N, Fwhile [k <[trade-record-one-len] of myself]- [. {- u% z, X) v* M" H6 O0 E' D
[& Q2 n( s* n( Q6 O
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)
+ D% n/ V1 x) [& d& E: N$ X0 {- \5 pset k (k + 1)' D. `! ?$ s1 B) F7 [
]
, J( m3 d# c& T. F& h0 nset [local-reputation] of myself (local)* o$ s. g' O" D( i
end
/ w; L0 C2 c' F6 s% x% C
# D9 W# n7 q6 z" jto update-neighbor-total
7 f# A' `5 {4 E& Z7 A  H/ [- h: l/ T
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]6 D8 R1 ?; B# P& ]

+ R/ r4 Y" `* }3 K% t; T

; ?* M+ Z& Y& @0 I! |" oend
: F5 J! R! \6 i% K3 c# Y# j, w' Z$ J, [+ M9 A! h
to update-credibility-ijl 5 B1 z; `1 C! o* I0 r4 Z8 F( W
# d! @8 n) t1 T% ~9 ~" y5 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。. p' V" H$ j8 P, v( Y! k! ]; H5 A
let l 0
( Y' ~/ v/ p; _$ @* |while[ l < people ]
6 q) |. Q9 M4 `! f( j3 p;;
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- y# ]7 T! f$ R# k( |, s$ G: V8 V
[; ?, U% j  _" d3 F* _
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
6 @; P7 F/ ]! ?0 T2 l# j" W7 V+ Bif (trade-record-one-j-l-len > 3)
. g; P4 k1 `' C7 i' y2 S# j, U[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
) o0 [4 q7 Z' X7 g1 ^$ T$ e9 Rlet i 3
. X9 ?5 C9 T, \+ O( S: nlet sum-time 0
: e. a; \) K" Q: u# Pwhile[i < trade-record-one-len]0 |$ D( {) P& g0 Z' U% e  G
[
& G0 Q/ v5 g% Mset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
- z0 j1 G( u  d5 R# m* uset i+ E+ R# Q+ o, i
( i + 1)

8 D' _) M! h& d7 R# ~5 r]
6 p% {  U3 `1 h: M7 }let credibility-i-j-l 04 m" f7 c' i5 A$ q1 [
;;i
评价(jjl的评价)' s5 E( _; Z; z# `8 p' ?* Z
let j 3, W/ Q% Q1 f* ]' \+ [4 j' k' s
let k 4$ L0 R5 ?8 p8 p4 [  V9 }, Y* C
while[j < trade-record-one-len]
, f" ]2 w/ h6 Q2 B! j# ^: h0 P; c[2 X: U( I9 m( ]% s$ T$ `
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
# R; k& O% x! J6 ]9 Fset 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)
! m( ~" y4 e6 \1 j* w, w- @. i$ z# Vset j
, F" A  j: B5 ?5 [! J( j + 1)
6 l$ V, O% l. l9 T2 c: H  C
]8 \1 p& y( p& B) U3 }# t8 P2 g  F, F/ K+ P
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 ))" ^5 F5 d3 o3 @1 k
: O) r& w: v  ]; D
- \, L/ T& i6 R. ]
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))0 u& L, t- b% E$ s
;;
及时更新il的评价质量的评价
' J' u8 W; a8 }1 M+ c3 Dset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]2 i+ Q  F* ]5 B- w, J& {( Z/ B  z
set l (l + 1)
: g. \! K9 K8 _' A2 A]
, T1 Z# a2 b" k; J0 t+ d4 o# Nend+ y& V9 O7 b: x2 D7 m# d! |

  D! [' s; \- T% v5 Xto update-credibility-list2 q0 |6 X" G! _2 @. j; o* d( B
let i 0
2 @" x9 V5 S! i+ P1 Bwhile[i < people]
! P8 [4 W1 z1 ~[
* }- _+ |; O5 t) f. c: xlet j 0# L& N8 \. p0 O# c; }
let note 09 R* B7 e" z6 V1 E' C
let k 0
5 l; b, e/ l. ?0 C. B! E;;
计作出过评价的邻居节点的数目& e9 u8 e! R* w% X
while[j < people]
" a( [. t: n2 c7 U5 }( J/ E6 \[  c8 Y2 K. ?4 Q$ L* L+ g
if (item j( [credibility] of turtle (i + 1)) != -1); i. r: @  {8 K- M6 d- A" i2 q
;;
判断是否给本turtle的评价质量做出过评价的节点
/ ^) ]% U5 j" G1 z( Y2 Z/ a1 o[set note (note + item j ([credibility]of turtle (i + 1)))) v  U- r3 p, y" R1 Z: j
;;*(exp (-(people - 2)))/(people - 2))]

9 d7 D. T3 P4 d# b  `set k (k + 1)5 Q+ p- l6 E# W2 ~+ o
]8 u' H7 E8 x+ j
set j (j + 1)
! e# M. _2 `, }6 V9 `  H) D0 I]
9 e0 x1 x! k2 E9 dset note (note *(exp (- (1 / k)))/ k)6 e2 `' k) G) Q
set credibility-list (replace-item i credibility-list note)" W! l; J/ _& D8 a
set i (i + 1): M* W9 F! M1 t5 o5 Y
]
' O; D" S  S4 T  dend
! I8 i* J  p# S1 ?" z9 Z8 i2 I, z
% e) a0 c- [9 B7 R, T" Lto update-global-reputation-list% Z( ^" ^' Y. H
let j 02 S" e. t1 c( A' G( l: a# x
while[j < people]1 \( I( @/ b. L* j1 f! A
[$ P& p3 t3 O, r3 {& M9 U8 R
let new 0
5 z. j- [) V, E. q5 j* y# B;;
暂存新的一个全局声誉
% R2 c) H$ e! Alet i 07 o- S' n' A2 X4 o# E: v. A
let sum-money 0: M8 L$ y+ `# X, g
let credibility-money 0$ h) I- L- u- L; _1 F0 R. q+ Q
while [i < people]
# K! X! R9 i; O3 S* B& W6 V/ _[
  }# r  `* v) _; O, Qset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))7 {1 Q) E$ W4 U
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% f) @' F, ]% b! ?# c' u8 Bset i (i + 1), b0 k# D* S9 m' x9 s
]
8 ~: x" x! @+ Z3 r& S- hlet k 0) S! P9 x1 C  j
let new1 0! l% U% g1 i" n- T1 J
while [k < people]
" D4 `. [  f0 ~[
6 v/ P* U4 O3 W6 E) h4 k3 Kset 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)1 u5 [; [$ T% E5 }
set k (k + 1)) l% G( N9 s7 U* k7 J+ N
]
) A' F) W/ o  E" r9 R7 Q2 Y- E4 iset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
( ^( k% V: n/ a- e2 mset global-reputation-list (replace-item j global-reputation-list new)) {2 ^0 N: w5 \
set j (j + 1)7 h2 R3 s6 S8 O- D* O; p
]! j. Z0 m5 c6 |$ T
end( t+ d+ H( y( o  d" Y) e
; X( z) Y- O9 {  ]4 r, j
6 P* Y+ P+ Y" k0 A5 C5 h
, Q: e; Q' e) v2 U0 V6 X
to get-color% M( b- G% R3 Y9 F, g$ K+ q
/ B' i5 [# `% m: p' R
set color blue

3 `3 F0 v$ w1 N: tend
# k# T. h/ P. R7 Q  j
: a1 E, \" x2 A; ?7 D3 ]6 Kto poll-class* |. \6 w# g  z' {) k3 @" ]
end1 ?0 ]% l0 J3 r3 F" Z
0 ?" [/ S2 A6 @. e+ R( [1 t
to setup-plot1
& a. d5 G0 [: v( C; O! c" x$ G. z+ [; I* K; F; }- ?, M9 n7 D4 Q' n1 j
set-current-plot "Trends-of-Local-reputation"
6 V5 S$ q0 T* L
( W0 R! b; x4 T# X3 m, t' }
set-plot-x-range 0 xmax

0 w3 g# m6 }! I8 }1 Q& A" |9 E
, I8 T* S$ @5 o9 a& Nset-plot-y-range 0.0 ymax
! ^# g) E$ o2 P# a# Q: N+ k. N
end
$ {: ?8 t8 S$ d( \) \
* F- B2 |8 y) o1 p- U8 Rto setup-plot2) w4 _: c- O1 q( f$ A; m' h

( v+ _! A$ @+ f- J! X  @# Q5 xset-current-plot "Trends-of-global-reputation"

2 Z$ n6 K" Z" U* p0 n# [& ^3 S! R4 K, F0 m, ]/ |$ p* [; i5 ]. t' x- _
set-plot-x-range 0 xmax
. Q: U0 K' L5 d# U. p
& V3 U' i; G/ N) G( v
set-plot-y-range 0.0 ymax
: k* J; ?3 v4 Z+ ]& v
end
4 L$ ?% H$ t# _2 z  b' K: a
- D# S1 `7 W3 s& w8 pto setup-plot34 E; O. I+ l. |, E6 C: W

  y0 k0 p, q+ T- s( p* c6 nset-current-plot "Trends-of-credibility"
' I3 L, _* w9 X8 Z

7 g/ M1 C4 J: r# Mset-plot-x-range 0 xmax

3 Q0 h7 n0 R4 c5 h$ g! r# C' _
: X, }) P, Z" _" ~set-plot-y-range 0.0 ymax
4 Y0 y5 m3 S8 }1 X) J% V
end: p( b  q( T/ G/ X& @
! j1 W# |1 t2 {2 Y+ i) R6 H
to do-plots" K" |8 N: A' _* a  r+ V
set-current-plot "Trends-of-Local-reputation"
5 F; ^, Y5 M4 W$ C7 G3 x8 @  j5 _8 f- jset-current-plot-pen "Honest service"' j+ Q2 m" m" H7 c
end! k) q5 M- J  Y) Y- d$ I
8 x! U' `! z1 U! E1 C5 n2 q+ I/ ?
[ 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.; z$ Q6 F5 a+ N3 b" {6 j
: q# t# ]4 m% K
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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