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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:5 X- r5 l0 M. Z# f
to do-business
1 R  _7 x6 n! z5 E8 L' z rt random 360+ B  n  s; T& x, ~% K
fd 15 [: o' r  Z- C, [. s; V
ifelse(other turtles-here != nobody)[9 `* d, d! m! V" W
   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.
+ h) m1 J( X+ r2 h9 H" g$ F0 T4 d6 Z   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ! J1 Y; x* L) N( P3 W/ V1 k
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer9 ], Y- R+ C) k" i% x( m
   set [trade-record-one-len] of self length [trade-record-one] of self& p& L. W' w! H/ \1 l  N: c6 p
   set trade-record-current( list (timer) (random money-upper-limit))
8 `! R' t* l# I" I" n' ?1 W" P; h. l3 [) @- ~
问题的提示如下:3 P) [3 m" p5 _& r/ g# Y
% n8 u9 [6 m5 l  f. c" z3 c! t2 T9 Q; X2 e
error while turtle 50 running OF in procedure DO-BUSINESS  [8 D/ f* e6 u4 C) w9 v+ ~2 o7 x* k
  called by procedure GO
' l4 K% V& v5 u9 `% A9 NOF expected input to be a turtle agentset or turtle but got NOBODY instead.
( U7 I3 y) K. B
(halted running of go)* p* F0 d, O5 y" p

" Z6 F3 O% y1 G+ r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~~8 k* b$ K1 P! `' b. j
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
6 G0 n8 S3 x8 S  Z) e0 Fglobals[
1 c# A$ d+ @) r2 N( Z& {; b8 S7 rxmax: |- v4 w4 k) f! N) j6 s: W
ymax3 @: _& G- x! f
global-reputation-list5 b( b9 F: J) m7 Y$ [

) u3 I$ e8 H( g;;
每一个turtle的全局声誉都存在此LIST# V# ?9 S. Z8 Q- L, }
credibility-list
' p) x+ A; F. \& M6 j, m3 p;;
每一个turtle的评价可信度  E: N- Z7 L% {6 u
honest-service5 P+ q. l" b9 U. }, ?4 `# N: ?
unhonest-service) N, n# U3 A/ v
oscillation
3 z& t. _& P5 b0 brand-dynamic
: e. Y9 R3 G: X]1 b& B9 Q: }" J. }$ |) _2 @
, }. s2 ~& u8 @* |0 S9 _1 @
turtles-own[2 ^: W/ W( ]- e" g" _  u  l
trade-record-all
. ^' A5 w7 w5 _: }3 Z& S8 K  C# w;;a list of lists,
trade-record-one组成, O# }" ]0 C, f3 q! @
trade-record-one
0 _! g# k# w% @# R; E" h$ A) Q;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录2 F3 W6 b/ \) T# e* j% Q

8 h9 q# R7 W" }9 _. A% g;;[
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]]
+ V% ^& |/ g6 V( F8 Y& gtrade-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+ t. R6 n8 U8 t1 L$ k$ 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
: j+ n8 s/ A! Nneighbor-total
+ R. W/ K! S4 r. V) a2 ^0 j* C# |8 F;;
记录该turtle的邻居节点的数目
+ w) Q0 d: R2 S  ^/ A* ^! v2 [trade-time
" ]# _. m1 v: k( V, t  d; Z;;
当前发生交易的turtle的交易时间
# @  P, m1 i5 z, eappraise-give$ F% Y' h& n' j
;;
当前发生交易时给出的评价
: Y0 C1 T1 ]2 x* uappraise-receive- S3 L1 ?1 m# M0 Y
;;
当前发生交易时收到的评价3 ]: H: T/ `0 k* {
appraise-time* \# i& D; X# J8 v  i5 Z
;;
当前发生交易时的评价时间
& `9 F& ?+ A( u4 C" \1 W$ olocal-reputation-now;;此次交易后相对于对方turtle的局部声誉; o. o4 B5 j0 \) A3 `
trade-times-total* o4 [" U- C( _$ S6 Y  b2 w
;;
与当前turtle的交易总次数0 z& d) w3 v) A% z. j
trade-money-total
8 a) E- [6 `; Q& H2 d;;
与当前turtle的交易总金额2 }  i) H3 v) m8 a+ m7 y
local-reputation3 H1 o# K0 r6 H) g
global-reputation
" ]9 {7 {3 f, H( y8 m, Mcredibility  I6 w( j$ k% O! b7 Q
;;
评价可信度,每次交易后都需要更新: E7 G( Q; e+ \& A2 q% X
credibility-all
* w+ i" ~4 A9 e( ]) ~8 K% @0 }" ~- n;;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 Y$ N9 A! E# }6 \8 P) {% \
% Q; Q, i; _3 r2 a. h& W: ^2 k;;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
7 `8 k$ M8 P" a" Scredibility-one
9 x' |1 z; a. w% T+ v, N2 U;;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
! Z+ @/ n" t+ L& gglobal-proportion
- m# C- V0 ?7 Kcustomer
/ Q- e+ G4 v1 w& m. Tcustomer-no" c0 A1 y/ a3 W$ k4 [7 j
trust-ok
- N$ L) \) G; m  z+ u4 s, atrade-record-one-len;;trade-record-one的长度1 W" ?- P: L6 h0 b% ^- R2 E
]$ T# O, i( k( V8 `7 q

6 @3 e' l  V& s! `* E7 S' X4 g;;setup procedure" Q8 ~* w& z: _1 |1 p
8 V5 k: ~- a5 W
to setup  Y# |1 Q3 H* E% K! |

. H) Q( T' M5 aca

- B0 N6 B, X' q5 _3 k; o& D7 K8 y7 V& b  a. R) K8 {
initialize-settings
  E, y( k5 ]5 g9 |
; y& F$ Z% k. b& B7 N1 E! C  D3 d
crt people [setup-turtles]

( W) n7 t& m6 g4 V8 g: y! o/ F& h
% z' T  J: [# c* Rreset-timer

) `; R9 G6 U. k# a+ [# B+ P- J+ D2 r8 X9 @5 y4 Q
poll-class

, D1 s! s7 W6 k; l* X/ F% Y0 e6 x- `" @) l: b( J( _0 j
setup-plots

) L5 w: S: a, d  }: d( O, X6 c2 L6 f( B
do-plots

8 O* L/ M) J$ n$ _: M9 d& _end4 h: |5 A$ }  Y7 t5 l
9 v% ~$ B7 D+ P$ f& j$ F: v3 _
to initialize-settings! j& l1 x+ Y9 `9 A6 Y

; p$ j% ^  r3 K) cset global-reputation-list []

6 q3 f% }" T8 j1 i3 Y1 J0 G1 `& w% W7 e4 V# X
set credibility-list n-values people [0.5]

) n5 d6 r! l- T* }, P$ V, v- U2 d1 U, l7 n
set honest-service 0

  X" s: u/ K! C0 D  R, Y, z
3 }+ \' U0 I2 X9 l! R! bset unhonest-service 0
$ x" @! b# A5 a3 r
8 P8 ?1 X: @8 N% E2 q. ?$ d
set oscillation 0

6 A/ c/ G: j# w: k
3 H3 L! E: E8 Z# v& Q: X& u2 I2 m: @set rand-dynamic 0

  W7 ?- r- A, gend* [  s( L, I1 P% K; ^
+ u/ T4 [4 T  z
to setup-turtles 3 `. f' h' Y( }' X% N1 l. s
set shape "person"9 H$ F/ X& Q1 g  R1 p
setxy random-xcor random-ycor
3 O% ^) j: @( r3 r$ ~: b7 g/ x6 ]set trade-record-one []
$ O/ T$ z  c+ @& g4 U' t
7 a" p* @  V8 J1 p0 ^3 e# L! a
set trade-record-all n-values people [(list (? + 1) 0 0)] 1 x) r: x8 d) k" [+ F) J; D
+ [4 l/ l# L: ^+ e; _+ I
set trade-record-current []
4 M9 W6 l  s, f- v- y9 P: e: E9 Sset credibility-receive []
8 W9 J, T* O! A$ w2 ]0 U8 a$ K9 Oset local-reputation 0.5
! z5 ^  o. ?' J+ x+ ?set neighbor-total 0
) p% a& w; X& Bset trade-times-total 01 W4 }3 C1 _: m
set trade-money-total 0
& q9 S: k+ c& a; v: l+ _! K6 `set customer nobody
7 [9 E4 w0 |( t2 Bset credibility-all n-values people [creat-credibility]
: c: r1 Y1 z1 D4 Qset credibility n-values people [-1]
, t6 R( F. Y$ K# N. ]get-color
. Z4 y6 o% O5 u$ z% g8 Q

  u: H1 k5 B0 N" J0 @+ _: Gend8 [  Z* Y2 S$ o

  c, X% g! K1 B! hto-report creat-credibility" {1 `' z) U, F/ v. E; f+ T, g9 M8 P: O
report n-values people [0.5]
2 R* }4 W! z& r; c/ Hend0 ?' z4 J6 }4 Y- w% b! w6 Y
$ ]3 B+ ]3 C- M3 _4 ~
to setup-plots2 G3 G( v9 x3 N* X
# Z+ d- n" }; @$ I- n, \- o8 u
set xmax 30
. n# R% Y$ `8 \6 j7 M4 Z# }
( O8 N2 r$ @& n" x& ~# V! G6 D
set ymax 1.0

1 G1 ^( ?/ j: V  f9 F8 `( q
, t2 `8 M& \1 T. A9 Cclear-all-plots
+ z7 M" m, Y* K4 {7 X/ g

  F6 ]" r9 U" v. |! Ksetup-plot1
7 C. B7 r. T# Z0 P5 Z/ K6 l# v. D3 b

7 X+ f! Z# T9 M' Isetup-plot2

% L* F- `. H9 s$ d+ R0 |  E% q$ @1 f" X
setup-plot3
/ N: h6 X; z2 D
end3 l- [+ B. Q. |: s9 J
/ l: S9 U0 n' ~, ]
;;run time procedures8 @1 M/ f4 N( K
3 r7 T. S: y  U6 n) K
to go# L' F8 m' l& d+ W
8 n' i: k! s, i! B
ask turtles [do-business]

9 G% |# g1 d; |: |4 [end2 M$ @0 \: ^' \
2 H# \0 }  P  f' b4 i9 ~3 O' A- m
to do-business ' p( A4 {9 `1 N2 e
3 @6 e8 f. C% I! C' f+ l0 q
" H5 X) f3 H" }; o$ U( _8 A
rt random 360

- N$ I1 h! E* I) \  x# L# l% a5 k$ m: z
fd 1

0 t& L. f; @( `: ^5 |2 |
0 @- {5 q4 E- q$ f; J3 B! wifelse(other turtles-here != nobody)[

: j; Y3 Q2 I+ L% f) ]$ x
3 e- j! r% H# b" o1 `' Qset customer one-of other turtles-here
7 {' S5 ]+ j2 P: _; O8 o! X
  {1 n( @3 V: X2 s! g
;; set [customer] of customer myself
6 c: |( H9 f7 t3 [" m$ k5 Q

/ R" \" q3 x6 aset [trade-record-one] of self item (([who] of customer) - 1)
- u1 R* T) g1 v& C8 h2 G7 e( ][trade-record-all]of self$ V! s  B! M! K% @& T" `
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
- i. }: D& b, i5 w

5 C9 H5 o) H# t3 r0 Kset [trade-record-one] of customer item (([who] of self) - 1)
4 m& T) O) G; B! Y' @+ Y& ?[trade-record-all]of customer

  E- Y5 R2 B# P; {7 q
, Z/ n8 X5 Z& aset [trade-record-one-len] of self length [trade-record-one] of self
2 U3 K6 i) B+ g+ x

4 ^7 A4 [) a7 S# r0 G" `set trade-record-current( list (timer) (random money-upper-limit))

1 a% w3 i. z2 ]4 f- I6 E2 ?
$ X; c5 j+ f, r* l( [ask self [do-trust]$ B' b# Y- W/ _
;;
先求ij的信任度
  P% o6 j& T  z8 Y1 I8 s6 {3 C8 {# ], J/ W  u
if ([trust-ok] of self)( k% U5 U8 w0 e2 w2 b$ K& h
;;
根据ij的信任度来决定是否与j进行交易[
- r+ _' @# o2 t# P4 S) Oask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself  |1 D; v& m' z) ^  t6 T' y
6 V. \7 d. j9 x
[
7 E% d  _8 j" j  y2 c3 y
+ b/ j# Q. B: v6 [
do-trade

' i5 W- N, C: y5 O& F! [, F: n2 a  p( E
update-credibility-ijl
7 ]( l% X. d& q+ n5 `2 O
9 z" a; a! j; L
update-credibility-list
  X% ?' P  l* M
3 v0 C  V; o/ v( V. \+ _3 R1 K+ w
. z0 |$ U0 Q! j; Q. M) @; g; Y
update-global-reputation-list

2 X9 }/ C; a" C2 \
. n+ O, [. T1 v) @1 n% cpoll-class

& ^; M6 }  p# {  T6 o$ D  }3 w. D9 e- n( _
get-color
3 z- f$ v% D" e+ A

# n+ X& ^8 ~( t2 J2 C]]
" M' e/ C( k; ?+ _, g3 \2 H3 T
8 h! h6 a) ~6 T;;
如果所得的信任度满足条件,则进行交易
3 B- {5 d6 f9 M+ ~+ [' S# b+ U: j4 W* g9 Z, [& w
[
, R3 i# z8 ^6 ]9 B

& @3 c! [/ B( E& \rt random 360
2 s% j3 r2 E" ~1 e! e

, i9 W- q6 X# dfd 1

9 v) J' z2 I  x% E! `. {
9 J3 m4 w& q) z, R# v! N7 |; W8 @]

" p0 @% t4 E- j) _1 Q
6 `  b6 g" f" ~* ?/ s! Yend

5 w/ H* Y4 g0 Y3 g: ?( q. L9 H* g8 _9 s) H& p! p/ Y
to do-trust 7 }1 z0 _! r( f1 J9 f
set trust-ok False
, O; {: N, B2 U7 K  Q# {- Q; N/ q) @: G5 O9 T

( x. `5 f% a) J  ]6 x2 P  Glet max-trade-times 0- y0 G6 x' V& b% w. U
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]) d: G: Y8 j& Y# ?& g. I
let max-trade-money 0& m: v* _  o4 M, |
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
( X$ r; E0 S9 w7 @2 {. h0 ?" klet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))# P0 \$ Y: V' K* K6 F0 z

1 h; F8 I2 ^9 [. l8 a: U7 y  T

7 o! o  g& S8 ]8 _. vget-global-proportion- t" G' {9 B: D, @2 W
let trust-value# N3 x# n$ i2 A8 H0 i8 ?2 |( {3 f
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)
6 O; R" r4 ^. P3 d# w, o; g7 X
if(trust-value > trade-trust-value)9 [8 g( w1 g* Z
[set trust-ok true], C& @9 W& X/ h( M, j7 o
end# }/ u6 ]2 e" k. n" [- T4 ^  ]
, W. e! m( P3 E6 c' k
to get-global-proportion' E) H. S7 f$ g' v1 ~* D/ n( U0 k
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)6 i' M' H: B. o
[set global-proportion 0]* T3 R2 @3 u( p; K) S0 B
[let i 0
$ f8 o3 R, W7 T; wlet sum-money 0
- W& `2 l8 S# Q% jwhile[ i < people]
1 w6 B9 r! e, C$ V, {1 n: r5 i[
. U7 t) ^4 N; Y* m0 A( R) f! ]if( length (item i5 {. T$ F; C" r
[trade-record-all] of customer) > 3 )
, |  f- [5 W* P2 s2 L$ \; q
[4 K& \9 N4 X% k  ?6 q
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
9 r  }- }/ u" Q! z  A]
/ n0 {" E& `- @/ ]% l  O]
! K) t( H& r) P. D0 ^3 }6 hlet j 04 G, ]4 Q) I! y+ Z2 m9 z
let note 0- f3 Y# {; K! b, y/ S5 J5 b! {# s
while[ j < people]* I+ F0 ]3 o. |" H- W
[$ o* N2 B0 D' N# V0 H; p  J
if( length (item i
7 C" |0 b* t4 c7 q3 k7 S[trade-record-all] of customer) > 3 )

& N3 M& C6 i8 J! J[/ q! e6 Z; ~! ^
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)3 M* X" v+ ^+ F2 R/ A
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
1 c* F. v3 P8 b5 C: J5 N[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]! d% g. A1 X6 G% w
]
' L! `; g. K' |3 H! @5 ~1 c; b0 l]( O6 F' c' a3 _% o  v' c& ^4 a
set global-proportion note0 Q. e) r/ c. K: B2 x+ t8 o. Y+ M
]7 c# W$ ~$ K% `. g% M
end7 b% z3 ~# q' n: @9 W% N' I9 |
" M" b  ]( h9 X2 M/ w
to do-trade
& ]# M: u, S1 q) X+ C, o  y9 B;;
这个过程实际上是给双方作出评价的过程
6 S' @8 j% R* m0 e6 X. Pset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( F- i0 U9 J1 W( o- U8 v( X9 ^set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价: [3 N% l* {) r' a
set trade-record-current lput(timer) trade-record-current
) c& T, A0 p* R9 E5 K+ r;;
评价时间
" J2 ^  ^+ H- V; f' \5 }ask myself [5 b  j! l' S+ M7 C
update-local-reputation
, ?; w) G: p4 |- h, q+ _set trade-record-current lput([local-reputation] of myself) trade-record-current
: a/ A# @) s5 K% c0 i1 m]
* \: n4 C" O- \* @8 Vset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
+ T, }3 z4 M# v+ R;;
将此次交易的记录加入到trade-record-one0 U: Q5 _- Q; z5 b
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
/ q& C! ^0 a! d  alet note (item 2 trade-record-current )' k) {6 l* j: k- {1 `
set trade-record-current& I! ^8 l1 ^: d" o3 `
(replace-item 2 trade-record-current (item 3 trade-record-current))

( T' s) P1 N" C: ?/ Yset trade-record-current
1 p+ d( J) h5 _- A+ o2 `(replace-item 3 trade-record-current note)
" L, m" Z6 C' y8 t! Y
# k! G; y7 c- R( c  a  W0 o' Y" W) T
( |! x, q8 h0 X" N
ask customer [& @- s2 {( w  m4 @4 e) A  s
update-local-reputation4 [& g1 K# t: {0 C' q+ \) B! i. r
set trade-record-current
* ]+ G) U% M* f5 l) N# z3 f* ^(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

( W( J  R2 L! ~& s5 b% T. h]
2 K7 T- ]! H$ R/ g
) E' s+ D. m% M& B3 {$ T+ s
2 @0 W6 i; D4 F4 q$ t
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer" \  C8 F0 o7 C7 f
* r* T  W- `- ~# `+ t
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
$ }2 \  ?  W$ }1 R3 t- s, T) M  P;;
将此次交易的记录加入到customertrade-record-all# d( {5 E6 b7 N5 X: a7 L& v
end! r8 }+ ^- C. C( B# p4 z7 K

9 Q# N- A1 V5 gto update-local-reputation
2 w* P0 y- w/ M( j0 ?set [trade-record-one-len] of myself length [trade-record-one] of myself
4 Y6 H, q/ x% q/ D9 d, r! o0 q' P* F, r, y- N

  p- m% }8 W5 [8 q# N;;if [trade-record-one-len] of myself > 3

; u! r1 b/ z% l4 k3 @9 x2 v* xupdate-neighbor-total- G  G. C  Q+ H1 L
;;
更新邻居节点的数目,在此进行0 r& O  ]! [) a6 v6 Z! N
let i 30 A1 R8 x! N, J- S6 w, O) E
let sum-time 0
7 S; `  P3 w4 O0 @2 n6 q: @while[i < [trade-record-one-len] of myself]0 y" e6 D- q* a1 [. f
[5 O/ M9 ~. o0 u; c5 R4 y% I. M
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
' ^2 ~! \7 z. ~. _& h; F: Wset i
4 e( E# X: b6 X, {/ d( i + 1)
0 R, a, ?7 ^. h/ a) B
]/ j/ D! ^2 y2 U0 {9 w5 s
let j 38 j3 ]  d  F; H+ o1 n
let sum-money 0
7 N$ z7 `% G# W- q; M* _while[j < [trade-record-one-len] of myself]  m$ [2 {8 q9 r) j
[% O. I4 U* t% O- m- Z6 r3 E  c. _( K
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)9 H8 v8 s9 ~, \, m
set j- @5 Q; G6 o9 W9 T; {) x: O
( j + 1)
! R4 C- ?9 L/ u  ^* T0 K
]
% f& w$ [) a$ B5 X% k* Ulet k 3( O: d( y! [2 u) @0 u
let power 0
6 _' k+ L: j8 D6 plet local 0
& z6 C+ v7 t% H9 B" H  d. fwhile [k <[trade-record-one-len] of myself]. h  T4 g$ n. @9 i3 C( A5 t  D  K
[& f9 j& P5 P+ q9 `
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)
/ L0 O$ \& r2 I" d/ Q- Qset k (k + 1)/ U5 N1 Q) R. t8 f; }8 J4 L
]
9 Y8 \: f/ y7 @6 Jset [local-reputation] of myself (local)
* L) G, ]+ z; Q& x' Eend
; z: J3 t' {' ~4 [/ ?
8 F5 P7 e$ F8 S8 T& pto update-neighbor-total. S; F2 U( n/ M

8 H4 d4 _, R% {! @if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]  @. P( I# |; V/ ?" p" R

" _5 }. P8 M/ f% E) t
; g- _$ i+ m3 i7 U6 p3 N% v0 e
end9 z+ L. W( k! D" j0 T! b
9 O! O4 V7 B1 k$ @% n
to update-credibility-ijl - x  X' O  w' Q/ D. p# `

8 X9 s9 E$ t6 n" z;;
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。
# i* [  Q8 I: G% Q( {let l 0
  G6 `1 ]' ]& l( _& H. P$ p1 bwhile[ l < people ]* y; c. q7 _2 w# y% H9 M
;;
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3 F$ C' D7 v, H* g+ m
[
# U( j* p0 I. s* S# g7 W, |6 alet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
' G0 [5 `" r4 q& }: n. N8 rif (trade-record-one-j-l-len > 3)
  p1 |5 w" c6 D$ {' R" l0 X[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-one5 E+ r) V! @/ o& n, q) @( Y
let i 36 C6 H( ~9 q8 L, W4 S- u. P9 `
let sum-time 0; o) x; X7 I& F3 X6 Q
while[i < trade-record-one-len]& w/ y8 z+ A/ R9 y2 G; }
[9 S) E  U+ E& S5 \, ]. i# L
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ); w: k2 `& D/ Y+ M2 p& W
set i) m& N5 M% g; A( v# x' b+ o9 C- C
( i + 1)

& U! e# T$ u5 ^( Z  c! ]; `]
0 b1 A* [) F, k7 l* V) N. qlet credibility-i-j-l 0
% p. _. B0 c/ q6 c  Y2 b;;i
评价(jjl的评价)
. v" O0 O# s9 F& o6 n4 D# B! @/ wlet j 3; r' x3 C8 u& j( E$ T  P. F% g1 o( O
let k 4& ?5 n) `) W0 a+ w+ L, K% M
while[j < trade-record-one-len]
. {$ k$ J1 u+ N[1 }$ A6 B: E8 Q8 O: U
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! O) d4 M: e& n' {2 ?
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)
: @& n' U* |3 R" |0 r' b. Zset j
0 m. q2 h, \$ Y% O& g( j + 1)

+ `: p3 A9 ~! j3 ^' V], g# q) ~0 Z% ]/ 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 ))
- u) I, Q' _; X  V% J  L4 y2 j: i$ \) ]6 `/ ?& ?2 ]& c

$ |2 |* S9 U4 o' C: j, l) Glet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
; b2 t) n" R; k  u# n9 y;;
及时更新il的评价质量的评价7 |+ [0 A9 H7 s8 a. a+ I) U
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]8 }" p8 I( ^+ R3 R$ n
set l (l + 1): N( q# A( c5 S! n
], S/ l& p8 v8 Z5 Z6 P
end( I1 G9 J; L9 k4 V' N
5 Z+ y1 x& v: h1 l
to update-credibility-list. `* G. ?' }8 n' ~+ \
let i 0' g( K; [) {% w7 F, F% Z+ @& P3 H0 t
while[i < people]4 \: P9 [2 d8 q. v4 O4 G
[
3 O' ~/ J. C# `2 ^, X1 K: Rlet j 0- f) _  m( v) R; n# X) {7 B3 t
let note 0( N1 v1 [" G2 [9 A( C4 h
let k 0  X! F, |* J, V% Y
;;
计作出过评价的邻居节点的数目7 E4 F! m6 M& T3 Y0 \! J
while[j < people], P5 e5 n0 f+ ]' S
[
. O0 S( F( m: r2 s. g% hif (item j( [credibility] of turtle (i + 1)) != -1)( t; q  b3 v$ X+ i  @6 j
;;
判断是否给本turtle的评价质量做出过评价的节点
, V2 t6 B8 [0 z/ o+ D[set note (note + item j ([credibility]of turtle (i + 1))). Q' K- j! B; Z% K' q' G
;;*(exp (-(people - 2)))/(people - 2))]

1 A0 m' s3 p8 m0 o2 d: F% M0 wset k (k + 1)
  p# H# ]2 [' m% w8 }. d1 X]  Q: l; T4 X( d& \0 l% ~
set j (j + 1)
( e# K# V6 ^8 P5 Z]
, h7 R: A( u; Zset note (note *(exp (- (1 / k)))/ k)
7 F5 d' M& |* a" b$ ^5 Tset credibility-list (replace-item i credibility-list note)" v0 g8 N& c# p# r4 _9 J2 u
set i (i + 1)
! Q! B) |3 l( a3 n- c  P, `9 S]* A# F" e6 j& r/ ]8 P* f# }( S4 c
end5 A* t- V7 @# \2 g; V9 x' e' L

$ j/ p5 ^7 j& Y7 f& Dto update-global-reputation-list
. d' P* Q# h( t; w! Hlet j 07 `* l; g2 P& j6 ]
while[j < people]8 r5 M  R5 p' p5 ~9 m. R5 t( Y
[, s* V2 d3 Y/ K4 Z2 ]8 F6 ^$ w$ g
let new 0
9 i: Z  A" ]3 }2 w- W;;
暂存新的一个全局声誉  z1 A  c$ w/ |' R1 _
let i 0
- F0 c% Y. b" B# j8 P5 e; ~let sum-money 0
2 ?6 w& ^6 i9 O9 {9 w4 w5 B  J) @' Clet credibility-money 09 _! H5 ?  |4 d
while [i < people]3 j  W/ Y/ Q* j" A
[: h. ]8 l0 }0 @, d. c
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
# S! A* X, i; t$ H1 I4 L# y' h) dset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
. M6 j2 E7 e( ~/ dset i (i + 1)- E: z9 P4 q( Q* b& m8 k
]
5 `2 W. c# R* M( h; L$ o8 g& I% Ylet k 0. H! V' Q! }- C- n7 ]  a
let new1 0
/ c- y" v, t- J. `0 Pwhile [k < people]# P. B" {- E/ b: D  s
[
! I3 {- `% R- X9 Bset 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)
! n3 e$ [, o1 T) Q" c! Hset k (k + 1)( M( F. G# i6 G! e
]
  @8 h! H- {; S* u- `$ t/ M9 Cset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
1 Y7 n, a% f8 O- X  i  a4 ^set global-reputation-list (replace-item j global-reputation-list new)
; y: [- t* X4 t( a3 Wset j (j + 1)
5 u7 x5 T" [- ^2 e, o2 Y$ j, D]
4 G3 b0 _3 N% U# I0 Qend. R9 P7 i5 t5 Z8 E5 i$ I

7 V# y5 k; U) T. f8 f5 f& F5 J. N& Q' {2 I2 H7 `# a. F

, f& n; e& R' r! g# P+ V1 ~% qto get-color7 s9 Q- W6 Y8 }) d) L2 S
7 G, t6 t, r# k* y5 s
set color blue

5 f# D4 p; v8 e. b6 i  wend8 y5 O& e6 W6 p' W
7 d! C; U  v) i/ C7 H$ u
to poll-class! I: i' K# k+ l; d
end# r% S' U7 {1 w$ z# y

+ K$ c1 d6 n' D" Z* ]1 ]3 D" j" Rto setup-plot1; T+ h4 [$ x, k8 a) ?& b

# |6 @1 t, e) ]+ L% dset-current-plot "Trends-of-Local-reputation"

; {3 k2 U  E$ N& r* e
& }/ ~* {8 j" J; d+ R+ F/ gset-plot-x-range 0 xmax

+ k2 G4 U* C6 E7 m# W+ C( x% Q7 d# E
set-plot-y-range 0.0 ymax

- ~+ w5 A5 M: X. O) nend
1 _  S; B. z2 h- w2 t8 L4 w5 }/ n1 D% Y" t7 X7 ^
to setup-plot2! b6 W; \& Z/ E2 O% Q$ E
$ C% H# n& k; g0 z
set-current-plot "Trends-of-global-reputation"
) Z: J' |3 M) \8 _0 {

4 ?  Z5 e0 n0 l% N8 x! U' S3 f1 Eset-plot-x-range 0 xmax
, L3 {5 M" t+ z/ X, u

+ o8 q/ B1 w5 }! p* w% x6 Lset-plot-y-range 0.0 ymax
7 O7 L# I- E/ K+ k  L0 T9 H
end
3 T0 S5 [' y* X5 Q4 n6 U; J( g( G2 W1 y0 V" S; j/ _
to setup-plot3
6 U) N' a4 Q( n9 Y0 g
9 z- o. V) c; C" N$ Hset-current-plot "Trends-of-credibility"
5 E7 K8 H1 J; b& K' s0 Q; X
, m; z3 g* t0 G0 C& m/ U
set-plot-x-range 0 xmax

( W$ q; x& |8 S
+ y% Q5 S+ D$ j: c) `/ `* T# |set-plot-y-range 0.0 ymax

9 ?. s! n0 M& ]: M) ?end; ^* j1 |4 q$ |% |- ~5 v
$ U9 T; w  g6 l" m& V
to do-plots/ f7 f8 |% b2 G
set-current-plot "Trends-of-Local-reputation"4 A* K6 \0 m/ ~3 M+ @
set-current-plot-pen "Honest service", {9 V/ M9 |7 Y8 k) d0 P
end7 b6 x3 Y. P- d1 G; {3 r

. X, X" U" L& m& 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.5 K' L" v" S  F! A

$ ~5 G% h. Y2 M) \, i, D6 {% L& V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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