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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:. d3 o, m8 }. N1 U/ Q0 ]/ ?) S3 m
to do-business ; R5 }' R- N0 ]* H' U
rt random 3602 J1 W+ K/ }/ d- A
fd 1- [6 m( Q1 g5 r1 q: |' }3 u: W- B+ l
ifelse(other turtles-here != nobody)[. O- B7 l+ y* A, G
   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.
8 q) M( y/ j+ {" l" T   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self      F& t5 [$ Z% Y& m# z- M
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer2 t# X! f$ ?- n; u% a
   set [trade-record-one-len] of self length [trade-record-one] of self/ |, ^4 N4 J( ^9 Z9 ~! I
   set trade-record-current( list (timer) (random money-upper-limit))
8 _: O/ M8 |( n' Z" ~7 s" A5 k; E8 t2 t# T  Y( ^! \
问题的提示如下:4 K9 F# Z2 s9 e6 ~. A

) M1 j2 U9 d( }/ x# nerror while turtle 50 running OF in procedure DO-BUSINESS" @9 O! `! a" J* a& J
  called by procedure GO! F! K) R1 l* ~; O
OF expected input to be a turtle agentset or turtle but got NOBODY instead.& [! x3 X% x# ?  Q9 J9 h5 x
(halted running of go)6 B. L  ?( B9 Q8 J* x
# x, _6 a' ?! ~
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~~1 V1 T4 P4 \) \- Y" {% y9 }
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7 J1 r5 V6 y  J$ b+ h
globals[5 \- `; A! _6 l6 }. i1 V
xmax% Y, \8 V: L# H$ `3 w9 C
ymax  `2 s5 b* T' ?' N7 B
global-reputation-list
  y- c- ?3 E2 F1 N. U
3 l/ j2 I& _- o) v;;
每一个turtle的全局声誉都存在此LIST+ C$ }: H0 h: e. U& e) m
credibility-list
9 I" E, v* m( _+ f% Y# m;;
每一个turtle的评价可信度# `; g* ]* [% z6 |% N
honest-service% f4 p. k) g2 H+ ^# H
unhonest-service
. s0 c/ i% H0 u! M$ uoscillation$ G$ S. l6 @4 Q7 m, o, Y$ A
rand-dynamic6 K( p8 ^6 K0 `% L  n$ B2 s& r
], s0 b, x' ]7 U

% Y; G$ e. u5 A3 qturtles-own[# l4 ~4 U/ [0 F$ F! Q2 o
trade-record-all% g+ [& g# k  \/ `% o) \
;;a list of lists,
trade-record-one组成3 h. n/ k2 B, U+ \6 D# ^  I
trade-record-one! J& a& G/ \; 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
3 \+ O$ z0 F$ J0 l+ Z. m' U) C! Q1 w0 g/ U" B3 l
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]9 c3 f: F- R% F
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]
- `& x* H2 v9 M# {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; |$ h! E/ c; Y
neighbor-total( Q2 l/ c( i- h; d
;;
记录该turtle的邻居节点的数目
; i- k4 y6 C9 f0 Z8 jtrade-time
0 k7 n- ^7 J0 T;;
当前发生交易的turtle的交易时间: V3 G! ]! o! _/ X2 w
appraise-give7 M8 q9 J+ k- ~- J
;;
当前发生交易时给出的评价, X0 s0 ~# C0 Z2 W7 w- d. b
appraise-receive) @4 L2 A% r( Y' E- @
;;
当前发生交易时收到的评价1 j' d+ M: r4 R" U
appraise-time
. ~; B% l1 j$ c# _. U& `7 L* C( a;;
当前发生交易时的评价时间: L, P! q- ^6 D: {" R
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
: r% S! B* T6 M* r3 _# htrade-times-total6 W6 @+ Z7 p+ s8 U( ?% b
;;
与当前turtle的交易总次数
/ [, E: y- N% htrade-money-total" G8 f2 b: @5 a, A! R
;;
与当前turtle的交易总金额% ~5 M1 Q0 y! j1 L! E; u8 y
local-reputation. y% l' R, m4 j' f! X
global-reputation
. ^" ^5 i' K# w* B4 s- Ncredibility
3 Z! k% V9 @+ W+ _1 |;;
评价可信度,每次交易后都需要更新$ c  z' W& i7 K) Z. l7 a% u8 q
credibility-all
+ q9 y7 L6 e% V$ h# C" }+ X5 _;;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 _0 ^9 U2 U" G1 P
9 b/ H4 |# D9 I" 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0.5
6 j4 w& P3 \# w: R. J/ mcredibility-one8 E0 n+ _7 ?9 L) A+ ~; g: s
;;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people8 a* v) h: T; a% P
global-proportion
, P3 l7 W6 g) {: d4 mcustomer
" A9 n( b0 _* ucustomer-no9 x1 Q' R( q# s  a; e2 T3 h5 F. I
trust-ok
# g8 W# X/ @. L( Q" _) ?  Otrade-record-one-len;;trade-record-one的长度
" b5 P1 D4 y' y$ C7 t' e, G/ M: Q]" n5 k* a- {) N# ~$ ?
$ N7 d9 X7 d/ C. L* w5 [9 N
;;setup procedure
( _4 F) \2 T0 i
( L; t8 z" H. j8 g3 dto setup$ J( B8 z3 h9 p# P; t1 P' k$ i+ e
+ [$ T6 z" f2 n
ca

1 E: R% K% X$ v2 x$ {. j% ~/ [7 C8 u2 F% L1 d: W( J' k* ]+ F2 x
initialize-settings
3 v$ I" l2 |/ E2 }- s
1 R- o1 ^$ z2 Q
crt people [setup-turtles]
7 r/ k, C" a$ q

6 u. f$ Y# u5 v: Dreset-timer

) T2 d) y& x5 a0 A& H( o
3 n  \) c$ Q! P3 q) N3 _) K5 j2 @poll-class

6 H0 i; t) G+ K- Q4 |# K  l# _1 u9 C$ N3 `. H, Z6 l
setup-plots
8 E" Y- z: N% H9 W
, Y/ [) A5 C) Y) c& G! T- M
do-plots
. b5 @0 \# v' O; G7 p4 g7 U7 P. _/ X
end
1 V% ]0 V2 ^/ y8 f  c) m) h2 ?1 u( o) x' B
to initialize-settings
- {9 A; z1 ^4 [' B9 h9 ^3 w
) E/ B! g) R8 @# m7 q  Gset global-reputation-list []

( U6 i) m5 W, a, r( P' Z# M7 s8 M! Y" A, G! q
set credibility-list n-values people [0.5]
, l6 M8 i/ A0 u" S+ S" S

9 @. E) s; v+ c& ^9 ^set honest-service 0
3 q7 H8 ^5 T/ x6 m3 Q% n. u" y+ H7 n

/ ~- B* Y; ?/ n0 {# z/ iset unhonest-service 0

8 B6 w/ w$ B, w/ E  f+ Y  t, l' D/ i1 C8 s: V
set oscillation 0
2 j' @$ Z- v$ M& [$ f. K/ P

" E+ x1 G: s+ Uset rand-dynamic 0
7 v$ [! @# E8 _8 f7 k, B: {9 R
end
- y1 V( {. ?9 l5 S( D
/ A5 ~, Y# [3 ito setup-turtles ! f8 k# J# j0 Y+ g- U8 l
set shape "person") N! h/ N; q+ M+ C" f# _6 ]
setxy random-xcor random-ycor
! O4 c$ k! c* x# [set trade-record-one []
# b  N; K" ?- Q  m% A  o. ]& g
# u+ A" j$ T+ _  y
set trade-record-all n-values people [(list (? + 1) 0 0)] 8 r/ X, }0 S9 e- X

0 x6 A7 m8 G* o: z. v1 ]! X! E% Mset trade-record-current []" U; G+ F1 ?+ H% j, H; n  q
set credibility-receive []6 a8 I* t) U5 q( F5 d- M
set local-reputation 0.56 ^* ]1 M5 s/ Z: f
set neighbor-total 0; b2 m! d. K7 l8 v: T! W8 S1 `
set trade-times-total 09 ~( ?0 g& L) m
set trade-money-total 0* B. K$ r1 X5 e( U* y+ L6 G
set customer nobody
4 D# p7 L3 ?& i9 ]8 jset credibility-all n-values people [creat-credibility]; L9 R! I3 B7 ]
set credibility n-values people [-1]
" F8 k. v$ j9 l+ nget-color$ B  t1 i3 g0 e6 t8 @

' \* i% `, D7 f! k, R6 D7 Yend
1 x4 D1 T' E3 X; d8 A+ W* \# M; c: m& n7 \: m8 E4 ~2 h
to-report creat-credibility3 V$ ^% F2 I6 M# a# o
report n-values people [0.5]
7 E+ K6 z2 l3 G7 wend
% W: N$ j$ k( h+ R. P: w. K
5 c; Z" x& A+ J. k* ?2 zto setup-plots# W( v) C% S/ N+ E4 Y

* B; H1 s% r! Z1 xset xmax 30

) P' @8 u- Y, j
/ B. D- {  {( O8 h! e4 h9 Zset ymax 1.0

  N7 i' m9 o; O- f
, v/ M2 Y1 Y3 m3 j/ Aclear-all-plots

( m0 Z5 {, E1 P4 ?7 _6 w- [
0 y0 D" o" o! D, H- k4 Q+ w' ~setup-plot1

8 a' R. n+ f* ]6 _0 G9 L" o* J: m* u( [" n' }2 I7 V' v6 m
setup-plot2
3 p0 G) U3 ~  l) C! ]

  H6 c9 J. o2 J# Tsetup-plot3

9 _9 v" G; r$ `6 qend  i3 p% z) ?% P- \
% m3 P0 J- v* l3 Z5 h6 u
;;run time procedures
. R& S- M4 [& N% a) h& p( U
  A: C# i6 @+ tto go' X/ L5 T. B$ z

; ^% R7 @& C, a" eask turtles [do-business]
7 Z& i3 H2 Z; \3 H9 z6 G: m3 U, ]
end. ?& ^8 F- M0 ?. c+ s% o; u
1 S- x1 ?+ [: M6 L6 M: m
to do-business
" R7 s% b  Y' X; w# R
' b# P5 D% j' ]3 S

2 {; Q* [7 b+ k: srt random 360

8 X6 S* `7 k& O% F4 o8 D2 s" ~. C
7 ~  b! P# V0 J& u2 Gfd 1
) J6 K( V, X! y! f2 W- b

: I6 |4 K' c, v; p9 N+ Kifelse(other turtles-here != nobody)[
( ^- ^& E- g. F% N" v$ x5 u, u; g
$ @( {0 _! T% B' Y3 @$ Z7 _
set customer one-of other turtles-here
: U0 r: V. t- d0 k* p
6 l/ V; X% M6 p2 K# w
;; set [customer] of customer myself
0 m$ f+ F  I6 g' D' s
& z: g% k2 n  t1 Z/ Y) j/ d
set [trade-record-one] of self item (([who] of customer) - 1)
, Q7 ~; `" b$ @# @[trade-record-all]of self) r, r8 M# y6 v6 v# R  W7 F, ]8 n. x
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

  G- D; T. I) f
% R6 `8 Z" z1 W5 {% |6 `set [trade-record-one] of customer item (([who] of self) - 1)1 y0 Q* U+ \9 A
[trade-record-all]of customer
. I5 x; `4 b# M% u% w  n( U

. u. r" R2 d5 N: D1 ?" W+ _/ dset [trade-record-one-len] of self length [trade-record-one] of self

- L3 l, U" u% `. f& B2 ]+ A) j6 ^. N- A, [" o
set trade-record-current( list (timer) (random money-upper-limit))

  }4 }5 C8 }( T) c$ g
- q, `! N- P6 I# [- H  P8 zask self [do-trust]! K; C. P; m& x, J+ s
;;
先求ij的信任度4 |; x: A1 _" ^& |0 w8 D, ^! J
0 M' j6 P& s% M& Y$ \
if ([trust-ok] of self)
: _( L3 V2 U$ ^5 ^% ?! W;;
根据ij的信任度来决定是否与j进行交易[) M9 z: H) }; o: E" V% _
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself5 I% }( R, d2 L5 `: d7 w1 [
, O. i( B+ }! v
[

3 `# T: R; A1 D+ z1 l1 m
3 x3 R6 o  V  P0 Y/ O! A* W! cdo-trade
/ R  U/ @4 b8 V/ E# _2 _8 V

7 r& L" q, Z$ vupdate-credibility-ijl

4 h3 K1 p8 P+ d7 Q0 |0 D8 T5 V% s5 M9 q
update-credibility-list
  Z0 F9 ?9 D( w8 M
& k+ p, K7 `* x, d, U
" K; B. f+ c  b" N
update-global-reputation-list
9 b7 r# L0 P0 ^5 n) L- {. M) B# s3 h4 f# A
. ?3 C+ {1 l' H9 h0 j
poll-class
$ W1 ~7 G  b" s7 V% [$ e! x
) o. B2 k) |8 i; l: O
get-color

# r3 Q% J& v+ _& B: y, i/ O6 V! E' S: E6 e1 b
]]
+ U" g: D8 G2 A1 f4 r
& ^# r% n- _; M3 [3 a9 D  T;;
如果所得的信任度满足条件,则进行交易
' B3 q6 m3 K" }& o" @1 z& Y+ ?! ~, u# a' e
[
2 F1 s( U* ]1 t% n3 F

2 G+ l4 W2 f) L1 X  u* I/ Qrt random 360
. e3 s5 E" y& N2 }4 J% ~& q8 X
3 D6 F5 ?8 f& P- O& w
fd 1
8 z& U! n0 E) a5 n) }4 R

: o% C: H# W! n0 m& ~- x0 z- T# Q]

1 C7 z; W' d8 h$ T- p+ c; ]4 s) q- r5 ^
3 }, l  f8 J: Q/ fend

( y1 J1 R3 B+ Q; T, [- c5 R! `6 l/ L5 s) f
to do-trust
* S8 N: Y: U( j7 yset trust-ok False
- b( ~$ W1 i; T+ V$ L( y9 M* s1 c8 x# {# Y# k

( ~6 W3 }! X. [: j  p( S9 qlet max-trade-times 0* F" P" x, S8 I4 S$ s* i/ o3 U$ z
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]* o1 s/ X/ D' [7 ^9 E7 i6 j
let max-trade-money 0
% \2 H9 k7 ]! s# t7 B/ |foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
0 n* `% ~" a0 g% o5 o" u' [: }3 b/ ~let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
2 B' y0 D0 k9 H* d. e
9 ~/ x$ b/ y0 L- E4 ]4 d
6 i6 @/ M7 H* d9 C$ i. p
get-global-proportion
9 z" s9 o5 t& a0 R7 Glet trust-value  M7 g, ]; p0 r6 j- 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)

# s' K0 \9 ?" fif(trust-value > trade-trust-value)- j( X8 H; R  y( C# L  m8 V
[set trust-ok true]
+ R3 n1 N/ y2 h# f4 w% R8 [end* a( O" x) U% E7 C3 E5 t0 R
+ E% I+ m' I; O; M# [/ U& l
to get-global-proportion
0 l% f; a" t4 ~; b+ z+ E2 {  \* A; aifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
& c/ T! A. K6 a" i1 k[set global-proportion 0]1 @; O! L$ _2 i) O* J  w
[let i 0
+ O  Z! H# H' k1 k8 a; Alet sum-money 0
* _( j9 y0 D: K. ]: Pwhile[ i < people]
4 d' _1 s+ M6 k[
: ]" ?( B( B9 w9 Hif( length (item i. h5 G* v0 C$ |  }, t
[trade-record-all] of customer) > 3 )

  @4 Q. Z$ y0 R% x/ |$ e. ]4 l# s[# o( e& b3 t& w. U% A1 c- ~- L8 ?
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))% `6 z; }: m& J  f' R" }/ w
]
, l/ l* Z0 B, u. ~8 O+ h8 a]' _0 t( J/ i1 O& N
let j 0) C. ?& D& c6 t/ q3 f, G& z1 J
let note 08 P$ H; W6 A4 W3 h% Q; P3 \2 \1 g- K
while[ j < people]
3 L! |1 m4 P3 Y5 z7 j[$ z( u6 k# }* X
if( length (item i8 z( Q! V* {. F' D7 A/ k
[trade-record-all] of customer) > 3 )
" v/ I. n! y- T9 s" c3 s. K0 ]
[' n/ M# Y4 J2 z; w0 {1 D: R( w
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)7 J+ ^5 Y* `9 W% {
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
! `0 }4 ?; C; U' ?( r: i: B3 P- _) a[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]/ g- ^8 W1 I* {
]
; \$ w3 h) C2 q# K( M: k/ v: p; P# e]
9 f' C( S& e8 k3 i5 f2 Z6 M. Jset global-proportion note
4 Q; m; G& ]8 ^, ^' e]
4 d1 O: {  a" x0 iend: Z& o9 U1 p8 F0 b
. p& r! |3 |) v7 o
to do-trade
0 A6 G% f+ i4 o2 ~5 F9 I;;
这个过程实际上是给双方作出评价的过程! U% e5 M: X, k7 s
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价. J3 B4 y! K( F  g
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
8 K) R  g/ `, h$ @set trade-record-current lput(timer) trade-record-current; j' |  C# f/ U/ _/ z7 p8 G
;;
评价时间3 M% l3 Y  K) ~9 J0 l) V4 m
ask myself [: v2 F1 G: @3 E+ ^: k$ Z) d
update-local-reputation
+ v/ \3 W' v, C& A) Jset trade-record-current lput([local-reputation] of myself) trade-record-current, c7 Z- Z4 u) B) E( Y# b* O
]
' Y7 b* z6 V2 e4 uset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
& r* n0 X* ^5 a9 p9 z;;
将此次交易的记录加入到trade-record-one
6 T9 ^2 w- I% F/ T; r5 E- A! ?set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself): }; E0 S7 q$ w/ ~' R
let note (item 2 trade-record-current )0 i+ x$ [2 G! g! a0 }/ T
set trade-record-current
+ G6 v7 ^. h/ E* M) _" Z! ](replace-item 2 trade-record-current (item 3 trade-record-current))

! E# z6 F' W# j% h2 k- ^set trade-record-current
$ y' ]" s9 }+ a3 c$ W8 i(replace-item 3 trade-record-current note)! V5 R# d0 l4 g7 R

, ~  O4 V5 x/ l' v

/ t' ~, v% {4 @6 X: d* [0 Iask customer [
8 K7 n5 V2 c$ Z" ]# zupdate-local-reputation
5 q- Z; a6 @( Y* _6 f- `/ {; Cset trade-record-current
3 m( @+ O* a! J- k; D(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

( R8 E6 [. s4 j, X: A* g! i  v  O2 @]9 X, Z# y- j" E9 S& i0 q

7 k- i: |  h, l. [( q

2 t" m% {9 Y. E& R% U8 E; a8 Iset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer% E9 P5 m7 e  r; Q9 p

; [- E! r% u$ gset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))* n, u2 e# m: p- x7 }  e
;;
将此次交易的记录加入到customertrade-record-all
; @& V( j- J- _, U. |: c3 O* Lend. D8 y+ ?# T5 Q2 O, c: Y

! Q  z/ S* |" x8 qto update-local-reputation
3 H5 e& v* Z6 X8 [  P2 e5 @; K; ?! Oset [trade-record-one-len] of myself length [trade-record-one] of myself6 M, \4 H9 o1 n* D! F5 H/ u
- R% c; |0 k) e" \  m5 r! X% ]3 J5 z

) ~4 C+ Q6 w  c. Y! A- q;;if [trade-record-one-len] of myself > 3

% G9 P2 i4 F- F; K4 Gupdate-neighbor-total
$ o$ C# q/ `8 x; h8 j* X' h;;
更新邻居节点的数目,在此进行
) \. B( ^& @# ~, R8 vlet i 3' J- L1 {7 I" }' D
let sum-time 0# P* j5 F) l( j0 \% H5 Z- X1 _
while[i < [trade-record-one-len] of myself]
' s  ?3 @- N) P2 w# ~$ x[+ F+ Q6 E- u7 M* B0 h  t% k) B
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )4 W$ R) q7 u% e+ {7 f3 j5 X; U
set i
' R: D/ p9 V4 z( i + 1)

$ m' \* o# T; }  G]
/ i: o: f$ S$ A# x2 b: E- d3 ~& N9 slet j 3$ H8 r. n, H: v1 f3 h, X' G
let sum-money 0
) L6 Q/ }% N8 k4 N1 n9 {while[j < [trade-record-one-len] of myself]
2 ]1 k& z9 Y: I' [7 c[$ c& x6 }$ F) T' p+ R0 J$ O
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); x3 ]! ]- f. U( g+ {" G2 F
set j: }7 J6 H; l, h  ^& C1 v7 q
( j + 1)
. _  i! \" C: ~+ F$ i' c  T! ?
]
* {7 e, ~/ A+ y& klet k 31 W) X4 j4 [2 v* A$ ^4 F" ^
let power 0
6 ^6 w4 F; N" flet local 02 w! @& T7 L) Y2 H/ v
while [k <[trade-record-one-len] of myself]1 ^2 O  }$ u* c& c
[" O5 B/ E4 [# h. N* r; Z
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) : `9 Z1 i: D0 Y: f* ~; p4 F
set k (k + 1)
/ V+ @2 {1 R$ |/ _; I]
7 W0 M% e, Y, t+ oset [local-reputation] of myself (local)$ L" Z! ~. E$ O0 I7 y; U3 I* A
end
4 i4 \. S: ]) U% l3 p+ T' b/ Q( i$ ^& w1 P) M8 V: S" T
to update-neighbor-total
! y+ }  w! V  T% H7 }0 Q
8 j5 Y0 Q! b, }; Q8 p4 G& Wif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
# l0 y% y! [9 v+ o
/ i' F7 ^$ u& h

$ y* h/ ^& f3 J# t& k0 C: Aend
; X, l$ I, i' ]9 }) X% S% D
: }; o. `2 |- g: l3 d" |$ g6 k" sto update-credibility-ijl - T7 K$ o* W2 m( ?

5 A& u. J% z" {( @4 O;;
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。0 g5 y# C* s. ?8 _2 D$ U
let l 0
8 L6 H1 L) X! I" j% Y# u* Qwhile[ l < people ]
. Y) @2 @# O! c+ W;;
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
2 n4 C) T% M& R; d  K3 H- }[( S2 Q* n9 b6 a/ O+ H
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)2 ], B4 o0 |9 T$ Y, b, ^
if (trade-record-one-j-l-len > 3)5 C9 g; O9 j7 h7 n  g+ C
[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-one6 v( w0 m. C( s2 z
let i 3+ M+ v# @- l8 N
let sum-time 0  f- z- m3 I) i. s
while[i < trade-record-one-len]
5 g$ V1 m) H) z# \! e3 @[& @6 N! `; d9 v* U
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )8 q* ?% P7 ^9 i
set i# L2 E8 k3 S, f! K- l( D/ Z
( i + 1)

! Q- i1 _* ^; y]
- b% O! X: ~  ^* X" J. \( elet credibility-i-j-l 0( q4 S8 U" J! O* B+ E. w
;;i
评价(jjl的评价)
4 |0 Q- n2 r6 z$ O+ Tlet j 3
% i1 \" V2 H, Y% K8 C8 blet k 43 S: q5 @+ Y3 [/ E3 s+ P9 }
while[j < trade-record-one-len]& J1 p9 d; F% S( z9 f
[  g. S% H1 m! E" t/ y7 `
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
7 }% b" E/ |( k8 k8 D- Sset 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)
& L4 |4 P/ Y2 g1 M  Eset j& O: Y1 C% W7 q1 d6 p  ]& y, ?
( j + 1)
$ I3 L1 ]$ g& q
]' ]; s! }7 P! H( w; J
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 ))
  m. Q# f- @9 O# }
  @0 g  q; j0 ^+ Y3 g/ H
! V4 ?! b  |8 N3 C* Q5 w
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))2 k' b1 b* C* L5 w7 c5 l7 H0 I
;;
及时更新il的评价质量的评价( ?4 ?/ x$ y# i$ W' E6 z  _4 b$ s6 s
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" V6 W; g6 Y/ B& jset l (l + 1)' U2 |' a. A4 f3 j
]* d+ C0 |* M- \8 ?( B
end& Y  a4 Q- K( o9 A- q: |2 h

7 @. z4 s4 q# X7 T$ z  J! Bto update-credibility-list4 p# ^" q: g3 Q4 o/ u9 ?: X
let i 0
/ v9 |4 r1 \8 C6 K5 ]8 E/ ^while[i < people]
) H" J9 H1 @1 e& [[
% Q: ~" Z6 P; [* F: K5 M& V2 [let j 00 t: H4 ]  s, X
let note 06 `+ I) w3 Z/ h( b) U% Z
let k 03 i2 F4 g8 Q: H8 r- n
;;
计作出过评价的邻居节点的数目
  I8 a  M- u8 ?2 Vwhile[j < people]
% }+ m7 \5 N4 Q0 j/ ]! W/ \[9 N6 P/ |& [' _0 g1 V4 ~
if (item j( [credibility] of turtle (i + 1)) != -1)  f' G" Z" o1 c. W3 {
;;
判断是否给本turtle的评价质量做出过评价的节点
; H% `7 y5 P3 c4 k) {$ S[set note (note + item j ([credibility]of turtle (i + 1))). h4 o, D+ b2 d! Y- F
;;*(exp (-(people - 2)))/(people - 2))]
! s' N; j/ k1 C
set k (k + 1)7 E7 N6 f- @7 O  C
]' F- b/ t. X; [" X* ?$ N5 K+ p
set j (j + 1)
1 i( K# j( K4 Q]
+ u2 M+ V4 R8 ^' _% X$ M8 gset note (note *(exp (- (1 / k)))/ k)
7 Y5 v! P+ U1 K0 D9 J2 @/ l* l/ yset credibility-list (replace-item i credibility-list note)( u/ q$ C( u3 b( N( G% e' I/ N9 A% B
set i (i + 1)) H/ ~) E7 p  Q! u: `- ^0 Z
], q1 U7 c5 c. @- P
end
) o: b& {5 N% }2 }- j, |  U8 L; }; Q3 H1 r' @' E! C7 D" m+ _
to update-global-reputation-list3 J* j) }" `& m6 o- u, C
let j 09 E" B, O# t  k0 m0 `  g7 K) X
while[j < people]
5 `- z; G+ V( ~' ~' b) Y5 [[" R1 }: ^( Q: h4 b# o
let new 0
! C& p3 E& M- V+ r: }& u;;
暂存新的一个全局声誉
' x2 e9 r) Z+ C! L" V5 [7 @3 flet i 0
% X! l" o) |/ B, \let sum-money 0! \' \5 Y" D  q  C
let credibility-money 0* ~. o0 z; P& G7 O- D
while [i < people]3 n+ E1 y  M. N
[8 n7 B$ N; p3 C! X
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))9 m5 B  I# Y3 \. g" Y- j8 ?- b, P
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% w6 V0 p8 F. }4 {* m1 r/ v4 Hset i (i + 1)0 o$ e3 k; Q9 {2 Q6 E' S$ y/ a- o
]
5 g* Z4 W5 [) m0 w; ^7 m2 ]let k 0
4 w2 @# G  @0 \" v2 i1 Vlet new1 0
% @5 z6 `0 K7 r% C5 ?4 Uwhile [k < people]
' u3 z1 J- |: I8 Q" a% T/ z[, z$ ?8 z! C( H: z) X9 p
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)) i; R7 P+ Z8 l! \- ~  Z+ q2 K
set k (k + 1)
5 L6 ?6 c+ }: f# d( x]
& m/ N6 Q( w) [, s$ F' }set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) * f# C3 d( r& Y6 B7 a4 Q* W
set global-reputation-list (replace-item j global-reputation-list new)0 G1 f' H8 E0 D( a# D) G  ]
set j (j + 1)
5 o* g. L" F: f]
: d! t, [$ @9 v5 Y5 z7 w1 E2 ^end
+ H( y7 I6 G' e# [0 v- w
5 z* m; r/ B1 m7 ?6 Z! o4 J, X
0 F/ r& l1 }, C0 V
# f" L( A! m0 R+ Ito get-color
; y- k: p; ?! k, w7 C/ h
5 w5 L. }6 j/ ]3 S! U) oset color blue
; o+ P, s! J, `9 X" A
end
* N/ w* J* i* G  {# k0 @$ w3 p. I/ k7 `; n# w4 y- G, \
to poll-class! B7 |: g8 g& z* `
end
: z1 D+ Y2 r# t% @
/ i7 T3 `4 `* M/ Sto setup-plot1
6 U0 w$ f9 M9 t8 i0 ^8 J# g7 _' H; ]8 F) t4 p
set-current-plot "Trends-of-Local-reputation"

) m3 N" }; f; {& d* T, _; K
# A. H3 ~' s9 C6 Z) j& tset-plot-x-range 0 xmax
" S# Q  R( O' L4 R: {7 \

, Y& G  w$ Y" \$ U) p  A: Iset-plot-y-range 0.0 ymax

' H/ p* P: J8 T+ Uend4 S  I" J( Q; Y: Z1 j' u/ G
5 a/ f, n7 }5 r! |4 Y& o, o7 R7 b) N
to setup-plot2
( I" |2 S! ?  c
2 }- F( R5 Q7 e) l/ N: V% @# h1 Zset-current-plot "Trends-of-global-reputation"

" F) l2 Y( x: D) z( w
1 @# ]& _* d5 c6 w, c+ i: Hset-plot-x-range 0 xmax
8 G! t6 s# w  S3 c

, v2 p1 ?4 R# o( x. Y5 Qset-plot-y-range 0.0 ymax

* \, j# M7 d  ]7 i( S0 }end
; x  @9 |5 u: U# D; d5 O, a. v9 B; q
* ]5 W8 h8 T- }8 i0 uto setup-plot3
* D& e4 T- b: c5 M4 R& E* i7 G" @1 Q7 p; z7 i( v1 _& t( @' p
set-current-plot "Trends-of-credibility"

+ z1 u/ e7 M, _; h8 d8 V+ j% H$ O  X3 V2 Y/ J; v
set-plot-x-range 0 xmax
8 Z; A& W- l) ~* \
7 O6 e  c4 C; u* d( q6 j
set-plot-y-range 0.0 ymax

5 n9 s* b- D  m; N( Nend
% Q+ \; C' C8 s0 m
% t& N% k9 E7 R* {, z* c) rto do-plots
* b, W; O3 z* sset-current-plot "Trends-of-Local-reputation"8 h* G4 o$ R$ q9 D
set-current-plot-pen "Honest service"
8 y) M  i6 O2 m4 z; o7 mend% |: w/ }6 t: }! |7 ~
" Q/ _$ @2 n6 }4 \$ a
[ 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.2 P' B4 E8 K4 _- M
! P" ?* o" p8 ^8 t
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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