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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:: d" Y# ~- E7 ?# l
to do-business * g# Y, E8 @3 ?" v" k
rt random 360
; X/ q- t" {5 e5 J& B4 ?9 i fd 1
1 }- N9 @" M) w  ?% o( ~/ W/ d ifelse(other turtles-here != nobody)[  t* [# @, h7 q
   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.
5 @; c& k% v; q# D9 k   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
/ A' L3 Q+ b  B   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
1 q  F( {7 d4 Z& {8 p9 K   set [trade-record-one-len] of self length [trade-record-one] of self
8 q5 L( G) P) H3 c1 q( b+ o# _$ a( d1 H   set trade-record-current( list (timer) (random money-upper-limit))
9 w6 ?( S0 a* }
+ j% h: I3 t8 q# I+ m8 d3 m5 ?  W问题的提示如下:, S* S: u5 O8 V% f, v7 E# `3 R% @1 O/ s
4 s9 `% ~/ V# g7 K4 g
error while turtle 50 running OF in procedure DO-BUSINESS
/ O5 J& {7 P% m6 d- z0 h4 m" R6 s  called by procedure GO
3 A  y+ W+ I' B- @5 P8 ]OF expected input to be a turtle agentset or turtle but got NOBODY instead.0 X4 X4 O  ~5 x4 A& U
(halted running of go)
$ p+ N! ~! x) S8 v* [; k5 y& |! E
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~~& B0 e! ]; S9 P
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* n% _, D. q( N! x  F$ X7 y1 Q( m1 \
globals[
" ^3 K, ]' `, I' \1 Oxmax
& Q) y. x+ f. t6 `! w6 F( Tymax
8 ]! P. \* b, `, s) iglobal-reputation-list
0 l& H  q' x5 }/ a  X0 b8 ?
! G# N/ x8 E3 n% Q;;
每一个turtle的全局声誉都存在此LIST5 a3 y2 u/ Y2 w
credibility-list4 ^' ~7 l1 Q; x# `5 m
;;
每一个turtle的评价可信度
4 q3 @' A/ e! J$ ohonest-service0 J( K  e# B3 R% z9 e7 z
unhonest-service( L$ a. J, a7 T( y5 Z
oscillation# \8 u0 D+ b8 i; |
rand-dynamic
/ m+ }& g4 ~& Q]
! y. F7 b7 t* b( F" e' E! D6 V1 v
turtles-own[  F  I# r6 [) x, Z8 I9 t4 b
trade-record-all
% c" a/ c7 Y+ I' a;;a list of lists,
trade-record-one组成
5 ]% L% y9 n) u, A$ ]trade-record-one' o9 V  v% I& D! A. N5 r
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
0 B  w( Q6 w1 [) C& p0 w& M( L; Q2 B  H2 @+ Z
;;[
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]]
5 t, i1 v  t$ G! 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]* }( G# E) X$ q5 ^: I
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
' J- f. p6 b" k8 h" e; m7 J* }neighbor-total9 _3 e8 n( G) z
;;
记录该turtle的邻居节点的数目
5 W3 S: ?; J8 j6 d" `trade-time) u  U# [5 ?- ~: G
;;
当前发生交易的turtle的交易时间
+ j# _3 N9 G3 pappraise-give: i) X1 i' G4 ?( Y2 j! @5 H
;;
当前发生交易时给出的评价: {6 |/ y; V( L3 i
appraise-receive  \" m3 E" v8 {& ~
;;
当前发生交易时收到的评价8 ]5 J) @& y! S
appraise-time, \9 b1 E6 \9 x1 @2 P
;;
当前发生交易时的评价时间
, k9 s; ]# A, V" F8 llocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
% ^& F* Z: W0 Q. s* z9 a% Ctrade-times-total
* w9 h7 H4 x& f5 h0 C;;
与当前turtle的交易总次数
, ?* D+ b& l9 K4 U, [- Atrade-money-total
2 _: I  J- H4 j. m;;
与当前turtle的交易总金额
6 y3 s, g0 e6 l7 A8 }3 dlocal-reputation
, G$ ^- y& K8 T+ {" b4 r; U/ gglobal-reputation) B" z2 z4 g2 _7 n7 r* i
credibility! [- N0 k6 D- o' M
;;
评价可信度,每次交易后都需要更新
+ x1 n4 q# D, _" e; O" icredibility-all2 ]+ N0 A: ?! o2 z! x& F. \
;;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8 N& A! L+ Q  u% p. [( T2 E. g
8 O: m; M8 K4 W! K& o! N# M
;;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 m6 Z1 h: W+ \, }+ ~$ R& U
credibility-one' L* k0 I* O% y: ~0 l( 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people2 Q' a- W6 U- @' Q3 _7 r
global-proportion9 j, P, \% R; o
customer* D, ~$ [( [+ K) `4 @3 m
customer-no
, m! I* h" G7 ptrust-ok+ \$ e" J6 G: _: |* _. I
trade-record-one-len;;trade-record-one的长度/ ~% m" p9 \. v! @6 q, S
]
+ o# `% \2 _/ m7 n4 N9 N% f
5 `2 @& U- T/ ~, i2 o2 F8 m;;setup procedure) y$ [# @- g" b) }$ t1 T
0 T) _+ g) b& S
to setup
% R; z( `% l$ a$ i4 g4 ]$ G% z1 K+ Z: y8 {# D+ p
ca
; J& T/ @  F+ v+ |% `; \

- X( @7 j' X: q- ginitialize-settings

7 g6 O4 n) t1 t7 \0 J( a+ l
5 S6 p" f# {& bcrt people [setup-turtles]
+ z9 f5 H3 K' ?8 H6 X4 [3 [6 J

- S3 }8 [% F# d; q7 ~reset-timer

9 |& Z+ Y* N3 Y" ^& Z4 `5 R# M7 `7 J, C8 a: c
poll-class
1 J  U2 d4 B2 s9 K1 o' @

1 m+ R' E, p( m  i' ^/ ~1 A6 |4 T% v5 {# qsetup-plots

  H( l- k: p- D) P% W/ W$ n* P4 H, _. l
do-plots

. a: ~/ e& X: F7 pend; ?4 C1 ~$ v  l) R$ a& w0 m2 q1 V
4 ~* o7 V% c5 m' ?+ a4 d/ L( e
to initialize-settings( n& Z0 w# ~0 T" Q/ O. m0 I

- }$ {" e  y! j/ a7 yset global-reputation-list []
: X: {4 M- Z) N/ Q' F* W/ V
3 m2 v- S+ ~: q9 G( a% D
set credibility-list n-values people [0.5]

  s/ @; n6 G% U5 i) {+ g) B
) z. {- x8 {) i/ k* t6 cset honest-service 0
0 R2 H- D9 Y: }, \' h

3 _  j, J  C" \8 @set unhonest-service 0
3 _; j  {) K( f3 m2 e

* D" B& W6 U3 G# {# yset oscillation 0
( S1 T: F" h: \4 p' ~+ C1 P* R4 E9 [8 s
, [5 y0 l, R8 }: m9 r
set rand-dynamic 0
+ q0 o6 l4 {# b) k* V4 r
end
( @4 b2 H& J! h: }( C, q. R  c7 Y2 b+ {) Y$ `* Y: r7 b
to setup-turtles
6 ^% n- T! A: a6 Pset shape "person"' Q! t1 U  t& L0 i
setxy random-xcor random-ycor) U/ N/ {% K0 d" [) {4 [
set trade-record-one [], S7 r" g" B6 s: g4 \% R+ `( o% D
" [) V% U% r0 c* X0 c. }
set trade-record-all n-values people [(list (? + 1) 0 0)] ; d) [$ }4 S  i; G) \& x, I
: l( C2 `: U5 C, e
set trade-record-current []$ Z: A3 C+ m7 Q" W9 J: Y$ b. H$ \
set credibility-receive []
% z' S, H/ _+ d0 g! Dset local-reputation 0.5
8 }3 R, p6 R2 Q4 bset neighbor-total 0
8 A+ x. {- n$ s4 p/ \set trade-times-total 0/ `' Q' I) w. {2 n
set trade-money-total 0* F8 E7 g3 i- L' v" d! U
set customer nobody
; {1 O  G' @2 J% |4 D  a. mset credibility-all n-values people [creat-credibility]" S3 k) ~+ a# l; I
set credibility n-values people [-1]
, ?) A: P, O6 ?% cget-color
8 g& N* o  I2 ]! d3 y2 H

$ e; _; }; b4 N# fend
& o/ f$ D! w8 H
2 M8 y( ^6 Q" \0 f, I7 Q- oto-report creat-credibility: x  P; R, [* w, X+ R
report n-values people [0.5]6 Z9 _8 I) M- A5 ]
end; I! O# o- B; d8 L

3 n# F8 _1 t/ |& V/ Vto setup-plots
0 ?- _; b3 a2 K/ {
- F0 t; _3 d9 x! x4 C! ^# j( yset xmax 30

6 \2 @4 R& u! d. N3 A& Y- l' y1 U7 l2 n. n" m# A, w2 a# l5 D
set ymax 1.0
1 d" M$ \) {9 Y0 x! j( V' K* t

& f7 H( y0 H  F' wclear-all-plots
3 x6 a' X$ {1 m; F* y: y5 a8 j
1 L: r) R$ d& O
setup-plot1

9 I: X: `2 M! j( l. M$ ?
) \' _* S5 z- h7 M. jsetup-plot2

+ B! F; a1 w% T  t; m. i
, G! P6 [9 \; `& b  ]/ s% c& lsetup-plot3

$ c! D2 Y( j1 ~0 P* Yend$ A+ C/ S! ~) X6 M( ]. |- _5 Y9 ]
" g  }1 c/ @9 w/ G" q
;;run time procedures
+ ^: d$ D; m: ^& r: V. K" a, l8 K7 l
to go
! a4 L9 p# ]1 p8 J' a+ ]
8 M" l- Z- m1 h5 p8 @ask turtles [do-business]
  m4 p. N0 c3 e
end
9 D  l2 w4 |# O4 ?0 K$ ?3 q2 L# @+ X
4 M- S' B, U. v7 P+ Lto do-business
9 a, l. @5 U# C

% b$ k) Y( i/ C2 L% _- H5 [+ q) g" G. `( a" T4 \& t
rt random 360

$ g0 a# v6 Q& w9 E1 t+ g' Y4 ^$ {5 ]0 E6 [( [/ N. X1 @
fd 1
+ ~' h! q: M$ g; x
7 B& X; |# D. \9 d- G
ifelse(other turtles-here != nobody)[
$ d, m5 f* _" y+ N+ y$ V

2 m9 P. i  u/ ]. |. Dset customer one-of other turtles-here

+ J( Y$ `5 d  ]+ O; V
( ]' ?. w2 t& `* o3 B6 J7 W2 k0 T;; set [customer] of customer myself
" _) |% J  @1 w, t1 c& N. S
0 @, t" s/ \: t9 d1 Z
set [trade-record-one] of self item (([who] of customer) - 1)
: ~/ p* x* b& p/ ?; ][trade-record-all]of self
- b  s' M6 X1 ?;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
' p$ p" C( z" P# l/ l. G2 ~% u
, T, F3 K$ i, s" x# B
set [trade-record-one] of customer item (([who] of self) - 1)
; }9 l% c. [8 I0 E. J3 O8 Q  L[trade-record-all]of customer
3 d% c1 q# y3 O( H0 S! l" A9 ?

; [8 y1 L1 S: ^( j1 |set [trade-record-one-len] of self length [trade-record-one] of self

" V1 C0 [: Z) U& c5 S1 P7 F+ r
* _: u5 H# e, a6 kset trade-record-current( list (timer) (random money-upper-limit))

0 q7 d1 P, D' \' A. m$ I8 M- x" k6 C4 z; \4 m
ask self [do-trust]/ ~* e; D9 {5 @  s) a) R& }/ [
;;
先求ij的信任度3 w$ Z  P" @6 F" |
  i% ^  n& L1 @! x
if ([trust-ok] of self)
& z6 W9 |% H( I2 c8 l. [/ r;;
根据ij的信任度来决定是否与j进行交易[- ^/ H8 N- M% ~3 o% M
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself& R! ^, u- d3 h/ h  ?! ^+ |$ i

; X4 x! u7 S: z7 l% ]9 S[

" J% N0 O/ H9 J: B( h' M7 _: _6 ]# b4 c$ }! y
do-trade
0 Q) C) Q1 h, |) w- x

6 }4 Q  G, ]' N+ `3 H& d  r( Iupdate-credibility-ijl

- k, Y  j, X9 h$ F3 i1 Q8 k  W8 k+ l% ~( T% S
update-credibility-list
9 Z( H7 W* `' @+ _
& ~. h% l3 S7 d4 Y6 U

  K& k6 i5 M, c* h3 l6 \# }; \( Qupdate-global-reputation-list

! n, X. F- @) d7 ]9 @$ K
* T; u# J- S( n: f! K% i4 p8 Epoll-class

" v$ O/ F# D! C3 g- e7 i  B
8 z& b: U+ L2 }+ B! e- s, P# uget-color

" K' r/ E) m5 i1 J/ o! c" _1 k( J! H
]]2 ^; f9 B' C7 x+ o! p, ]8 c
! D9 W* b8 \# G/ W! X8 `
;;
如果所得的信任度满足条件,则进行交易. ?/ \9 }% L# z) k+ F8 U

" s5 C/ K4 b; H$ R[
. E9 _% ]4 [; R9 W8 X
# m/ m3 S0 k' Y) a" I4 h" D
rt random 360

/ [& q& i. L7 l1 K. d- H& j- }7 d, U$ S- Q$ |: i' G; `4 q+ Z
fd 1
: c" [) e' Z, D/ H4 C# O
8 i, ]2 R* }( C0 v
]
# e1 n* L$ p* Y

( o4 c- u2 i+ xend

% ]; H6 ]& @4 N- B# v5 R! e/ B5 j3 @
to do-trust 6 k6 H0 I- Q8 P4 B5 s8 c
set trust-ok False
  z3 @- v7 ^% d' i% I) z9 U, X) F, y" |# ^
( V. F2 c0 F: b5 P4 J/ G
let max-trade-times 0
% X0 m9 s  J' y1 Y; h  d( {foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]- o( v; y$ V0 o9 [
let max-trade-money 00 [3 B+ Y# O0 p. r2 X
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
+ C1 m, B- q- `" ylet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))" [1 T# y: [; t6 }- b- i- g

" d& a7 N. r* E  ^8 n8 i9 v

: D4 m4 X) a! N9 D2 ^( G: L+ Z3 Mget-global-proportion" j1 a  P* m4 \
let trust-value* D7 Y+ P4 ]8 v$ F% h
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)

# t9 B$ a8 Y! U: Z5 }: ]( Aif(trust-value > trade-trust-value)& [8 K3 c: e0 H" W  h# A9 U
[set trust-ok true]
$ B% _# T8 u( l3 q) h' j- yend) k- }2 t" `- T; e' P# X

! e0 g) t. r& z3 X- M, m* n& _+ h+ Bto get-global-proportion. `/ i2 j* ?' @, S2 c" T7 ?
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
# g7 [5 h/ F) o% C' }6 [[set global-proportion 0]
# U" t. ]; T/ ]0 {; D* c: Q/ D[let i 06 l" h4 a, d/ p
let sum-money 0
, m3 C% x! N  K5 i8 s# F  w4 Pwhile[ i < people]
! `. G! u% J$ i4 u- E. I% v- w/ H, Y/ {[) R( I, ]7 @0 b+ S" B- k# c; M
if( length (item i3 y- R. l$ P" O0 t
[trade-record-all] of customer) > 3 )
4 r/ n( S( X7 J' h2 c
[
; F: s  A' S) t7 V5 O7 ?9 G" zset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
( G' }/ o' O/ r) ^) _]
# M) ]$ W& u, U; @]
" l  ~& a* X$ e- N1 U9 Vlet j 0- T7 e7 `/ }* T# d$ V+ u5 y
let note 0
3 |9 q: k: F1 J9 Z2 A; h3 J( \while[ j < people]" I4 Z0 ?# n* l% Z5 U# X% Z4 E
[
) k' \& O7 G+ Q4 X- Q6 @if( length (item i
7 ?  n: S5 G' m[trade-record-all] of customer) > 3 )
! Z- J' I7 W  T2 [0 i+ N3 z
[" }" i7 ^' ~5 w- `% q4 X" `
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
" {" S- ?' O6 _) e[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
) {$ k. M! M1 ^% t  z9 @[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
1 m. J5 j! o6 O4 k1 R1 U" v]
' h# U3 b. N; w/ o/ O]
% c; N" s" o$ Z' C, }% e9 H- hset global-proportion note
8 h2 [8 X" Z- d( z]
) h& `- s8 d. U; k: ?, `1 `- D1 t, Dend
2 V8 O6 f+ K1 f$ d1 M$ B/ D1 ~2 M+ O
8 L$ K# @9 B  d, A' A0 Gto do-trade! K, K% `+ M! U) t/ W+ J$ {
;;
这个过程实际上是给双方作出评价的过程
& F  e+ f5 j3 ^7 s4 A0 _set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价" \3 f+ ]% w: Q! `# \. r; A
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
/ I, @9 Y; d- O+ I' O0 nset trade-record-current lput(timer) trade-record-current
' m* G8 P, `0 e8 W1 n;;
评价时间
# ]/ M! f7 t/ M3 R; Gask myself [( c1 y  A$ Q* c- \3 A: A- Q2 @) _! t2 n5 i
update-local-reputation
: n6 O* h/ b& b& aset trade-record-current lput([local-reputation] of myself) trade-record-current$ y+ a5 \7 R3 {
]! @. x2 g, E# Q
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself% T2 ^/ L6 n: p) Z6 M- w. V
;;
将此次交易的记录加入到trade-record-one
3 S: p% p1 B5 J8 Q6 vset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)) E, n, j& _8 X& Q
let note (item 2 trade-record-current )
6 p' J' s5 x% w5 d6 D6 {* pset trade-record-current  Q$ H3 i/ G4 g% m+ ~
(replace-item 2 trade-record-current (item 3 trade-record-current))
- S2 p1 B$ M7 C% {& r0 r5 Z
set trade-record-current
+ S2 |' L# S7 W) }(replace-item 3 trade-record-current note)) l; z- s. a6 I3 [+ N* z
0 x) S: g( e' s
) u: [3 a" x/ x5 w8 w) w
ask customer [# e& E" v( r( W6 s
update-local-reputation/ \; n% c% Q, |5 A
set trade-record-current! n* ^5 U6 S& L8 V
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

- |6 n4 N* \$ d9 |]+ e1 P* d3 H' N: a6 p' u
- b+ t3 v; T  H  y: A+ _( q- g

0 v2 Z2 Z/ a, J5 L+ M3 V. G/ rset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
1 s$ T( d: X# Z6 T5 j& |
& v- U: J6 K3 t( c) P2 _. m+ A
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))+ Q  |8 u/ e0 U7 d% p/ L: [8 n# z
;;
将此次交易的记录加入到customertrade-record-all1 p+ E! c/ ^* F# X
end
! r% ?7 F4 h9 _* x
: p7 W1 {' k; W) i) Nto update-local-reputation4 p* c0 V) l& F) z
set [trade-record-one-len] of myself length [trade-record-one] of myself
) ?1 ?( q$ {7 j* n9 E2 L5 _2 p1 S) N. o; N4 ^
! i; z$ ]' b0 S  H
;;if [trade-record-one-len] of myself > 3

  U) u0 B7 F  ~! R9 }3 |+ }2 Rupdate-neighbor-total5 y+ N2 v! ]0 r& z8 R
;;
更新邻居节点的数目,在此进行4 {& W2 X* ?$ _* C( S/ \5 {
let i 3
' n# ^7 o8 q* `6 y+ w" {( alet sum-time 0
" }. H: Z2 X4 }2 [. K( S: c; Hwhile[i < [trade-record-one-len] of myself]0 _/ a! o1 d' [: l8 q
[9 M+ X3 P2 E  B, S  _* Z3 U" [; E5 W
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )% Y( f! }& S7 @" I
set i* ^& v! _6 @5 P0 x
( i + 1)

+ |! H' x: G" A% H]
2 K* P% V! U' a# Alet j 3
+ ?+ A! E3 p( ]" O+ {+ M; ]let sum-money 0. V# n% R, L, p# L8 B/ k
while[j < [trade-record-one-len] of myself]6 {7 N( O$ p1 U+ @# \: n
[/ v% J( b2 V/ y( ]+ v5 o/ t
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)) ~+ C" l) ]+ h9 m" ?
set j* D- E( f8 s+ r2 N1 ~4 k5 f
( j + 1)

  w. w+ J: Q3 l$ A]+ o* J  ?0 t9 f& E, l
let k 3' U; s9 H6 j- e: L0 u# b
let power 09 o5 _3 \6 T" U6 r
let local 0' K" q  \6 b% t
while [k <[trade-record-one-len] of myself]
: q; B9 w8 O% m& g) |( i[( |4 X% D* |9 d# W" F( e  `1 N
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  L8 T/ w; g4 bset k (k + 1)
$ O9 b' t! C8 Y% F7 Y) {' b]
) L6 V0 X' O/ ~! s$ oset [local-reputation] of myself (local)
: |  e- h0 A" q; k. r% yend. `$ ^9 v7 F+ z% b% K

5 {" D' f  ~* uto update-neighbor-total& B# e+ Q) d1 H, m/ d5 v- F
& ?$ ?2 k( f" a* \( m- ^: h6 B
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
. O! T* b( j  I; l
0 l* A9 R; ]/ C
3 L+ A6 H( C8 l3 w# Z. \
end) c1 A3 U; Q( L+ m% s9 z* d, R
  T8 r6 x) h+ ^5 [6 y' i% H5 k
to update-credibility-ijl
6 ^! l2 q5 O( r0 g, l  a- V$ P3 r6 L1 R! @) h* ]" M6 ]7 k1 l
;;
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。# ]& t+ N0 d- k/ N' H
let l 0
+ J2 y' v- q) k* J" H% h6 Awhile[ l < people ]
& b. c) r  Z5 V8 H& Y5 ~+ A3 N;;
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& I- `1 K7 \/ @9 G' S- L$ l5 L
[
+ J+ i5 Z# N+ P, A: j; C/ llet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
' ^% N+ e) o+ f' `5 E. s( Sif (trade-record-one-j-l-len > 3). y2 K+ N& a+ i; y" I( `
[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
+ K# R9 D: S! J% t8 `let i 39 Y2 t( m' g8 h; ?
let sum-time 0
: b4 ?" f; |/ c. l# y. K" `while[i < trade-record-one-len]
4 I) p5 Z3 v; Q, q6 w' u[) v9 q: k7 \0 {. Q
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )4 W1 `2 L6 X* Q3 ~! b, O! I
set i' @+ |: {5 {: b4 G: Z( U
( i + 1)
+ t; A- _' D9 ?7 N2 J8 B9 j+ \
]
9 B1 N& a! h( r9 n0 Jlet credibility-i-j-l 0
9 U7 O, V) p: Z8 e) R5 [/ {5 y;;i
评价(jjl的评价)
- K  \$ p0 q' y7 h$ q6 @$ Z( plet j 3
# y- C; g9 q& Glet k 4- Q2 ^- }5 v! x" v8 d# o9 ?! T
while[j < trade-record-one-len]
# P& `) I6 X8 l: k[
4 Y' o  j& C5 C( R. awhile [((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' M: c+ x# |5 k
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)
3 a! [" j0 V% u0 j7 j& |set j
9 r& q$ Q# N8 b9 g( j + 1)

+ q. s5 z4 S) Y9 z0 V* I]
( b0 v2 L8 f. vset [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 ))
6 U7 t6 e; D5 W/ M; S
5 Q2 s$ _* a4 o7 ~
" M9 ^% `3 [5 `0 V1 n* E* A
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))) {0 b$ E( z1 W& m0 K% X
;;
及时更新il的评价质量的评价$ w; @! i3 ^! Z& G" C
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]( H& D. `1 H* d& s* h6 u/ ?- F
set l (l + 1)
0 Z: T4 `' d7 ^+ r7 u! c]
( X$ E9 j! J' ]& U" \, A! L+ nend, Z6 h" K( C! @2 K* o& |& p
7 D. Y6 e6 j3 P& d; F7 M
to update-credibility-list
9 N' D0 d/ X" J+ Elet i 08 n5 ^, k4 Q$ Y1 ?4 l0 P
while[i < people]. s( v6 R6 r& l$ d) ~2 U; y1 S+ @
[
  ^/ |8 v7 d6 Jlet j 0
- X1 [: D3 t9 Xlet note 04 _% w# r% w* y- z8 a* j: L
let k 0: P- k% f$ P& z/ T2 e( a
;;
计作出过评价的邻居节点的数目2 E. J8 \5 x0 ]
while[j < people]! a( V7 M8 A  f) e! `  e
[9 ~/ }5 N; d; p3 G& C6 C  G: T
if (item j( [credibility] of turtle (i + 1)) != -1)
, b' R  K+ b+ z/ a" S% n;;
判断是否给本turtle的评价质量做出过评价的节点
% s( G) i3 _& X( i% }[set note (note + item j ([credibility]of turtle (i + 1)))
5 G  o9 M* b0 U;;*(exp (-(people - 2)))/(people - 2))]

* Z% e; W9 f7 ]' F+ Z  Y; F  Q: tset k (k + 1)5 y- W, \, U4 O- X9 i
]' \2 J9 A2 N5 j) H
set j (j + 1)
3 N' ?$ O% t  j* n. V]& n6 x5 B7 M: k5 g6 d
set note (note *(exp (- (1 / k)))/ k)
: I, s. L# F% [# Iset credibility-list (replace-item i credibility-list note)
) y5 Y; H* s4 o3 J, Qset i (i + 1)
  {# V) y# u. Q+ t. N( i]
1 J: Y+ l, W4 H3 `6 f2 G) A3 ]3 E4 vend" D& h9 e3 S* ^9 M9 `* S$ d- J
/ J0 g/ a( m* C' M6 R
to update-global-reputation-list9 @& I- D% F! o5 i: U; m
let j 0# l5 ^8 I. U3 ?+ q" {* A
while[j < people]8 {$ Q9 H! p7 k  g' r
[
* a' q- y0 B% G3 t  \& z8 K( Nlet new 0# X: x; b' T( @5 B' ?; F0 F
;;
暂存新的一个全局声誉! q6 C4 Y3 p6 s2 R% E9 ?- |
let i 0
1 i' P* x$ _+ ]0 j8 F- c# L* dlet sum-money 0
7 h, h+ V! e% Z& U( o( y' klet credibility-money 0) E* c  i' ^% [" j
while [i < people]
* \# S0 `8 ~9 f2 b4 R6 q3 A" n[, b3 G3 d8 g. W
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))  X: _' r9 x$ L# p# P4 Q
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
0 E! A8 P5 g5 A7 k" ?set i (i + 1)7 p, i6 b  J9 z2 A; H' ^
]/ s8 |/ N$ Y+ Y& y) \8 h
let k 0# C* s8 z1 n7 C8 x  F  ~2 b1 p
let new1 0, o- _; m. [+ P, C" E
while [k < people]# Y: }+ G, r1 D
[/ G  k6 \* E! V/ W0 H
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)4 S9 @% [1 ]9 y# V& R. ?
set k (k + 1)
4 o% n0 s5 R* f; t: y/ F]
3 g: \6 y+ w0 W( n8 {9 J  lset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
2 f9 ^5 i- t4 s) a0 D( lset global-reputation-list (replace-item j global-reputation-list new)
: \( g, |2 N* ]9 ]set j (j + 1)! |: s( N5 C; e
]
) M/ ?7 \$ b% K' ?( n  iend
+ a0 |4 b9 H0 d
7 w+ ]) Y% [2 L2 @2 f. {$ J7 f: T
" |0 N2 Z6 [5 t! ]) x  H
0 r( Z) g! _. n  E# o6 `, ]to get-color* p# P1 S$ d' K

6 K( Q# e- p2 q) m: A# O% dset color blue

: t3 H  Z) A* G; ?4 C! Zend
$ Y1 E5 c3 K, y1 T3 ^: j1 o% F  c6 Y; H$ t
to poll-class
/ J) M( `% f2 \- ?4 l; Kend/ W/ b( q/ I1 f0 w- m

- ~, v4 o4 J1 }# D0 e3 Pto setup-plot1
) |9 x2 p# @! ^0 D$ f& u. ]* t+ F3 [# m
set-current-plot "Trends-of-Local-reputation"

4 ]; s7 F" F3 g  E9 Y! s
& L4 [) r% O2 X: U" Qset-plot-x-range 0 xmax
) i1 }; W! X% x5 f/ y

, W& L5 j8 g& L, ^7 l  _3 f# rset-plot-y-range 0.0 ymax
5 c: E8 H( e( F) V; X8 b
end/ w$ n2 q4 Y* h( b# |0 t

+ f" g3 j5 o% o2 Y- Q- p2 K) xto setup-plot2# C: o' Y) C2 O" u: ?

2 v5 W6 v; A. O4 kset-current-plot "Trends-of-global-reputation"

& C3 S# O: N' G0 _$ [: x  D! I0 M4 O4 W9 y9 J& g
set-plot-x-range 0 xmax
1 ?) I$ ^9 A6 s- G

+ e" E) Z; w4 R' i$ G; Y# Gset-plot-y-range 0.0 ymax

& Z( k6 f: |5 nend6 E) \4 }2 m" {+ q. v; f' f& j& Q& Q
2 n' P/ n3 ~' }, |+ B
to setup-plot38 ^& g+ B* h( L, S% N- D/ {2 p

! W9 e/ D3 H/ `/ a" B* uset-current-plot "Trends-of-credibility"

5 k) p+ P4 \# O4 E- L/ S' S9 y8 c  R, R, x8 x# n3 ~' F! ^% R% {
set-plot-x-range 0 xmax

! W0 t; ?2 ^  U% |5 D! f4 Z9 c1 |* r
; v* t) g, G, j0 h' @) ~* {2 u0 Kset-plot-y-range 0.0 ymax

2 S1 I0 h; l" h; W/ Zend
* x/ _/ i9 |6 }- e: x/ \- N& D0 ^! p8 \. l7 N1 O1 U% [
to do-plots
9 E/ P! q" k) `6 W+ J' d2 Hset-current-plot "Trends-of-Local-reputation"8 p% ~# B5 v/ u, l* h/ T
set-current-plot-pen "Honest service") n! B( j# `0 t- d) V8 {
end0 l, k1 M/ r. j6 g6 ~
/ f& r7 a" s1 m% o6 x
[ 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.
  v' [% ?, H: y/ l
8 N  t* \8 E3 v: I* 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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