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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:. q, W6 @, e0 Q1 x
to do-business
4 G6 J4 n& Y3 y7 K4 s+ v rt random 3601 V/ [6 @7 j  b9 n' D
fd 1' F3 B; X' G: K( Z& t6 R0 d1 x
ifelse(other turtles-here != nobody)[' M9 A! u+ D/ M, z' ~/ u0 X
   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.
4 y: @  a4 j% Y2 [$ [" S0 C8 m! j   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    / W/ b5 Y& |' G
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer1 P0 W( B8 Z) P4 v/ c
   set [trade-record-one-len] of self length [trade-record-one] of self
7 J  t. T7 e& v% n. j   set trade-record-current( list (timer) (random money-upper-limit)); ~, }7 o* }0 ?+ Q$ w) w: Q' ~, F0 a

# p# `" ?4 g) H& n! g问题的提示如下:$ F3 p0 i% c5 F; e

1 y! ~, ~- m5 W0 S' h1 {error while turtle 50 running OF in procedure DO-BUSINESS& |( J5 o9 |0 w4 t; @% p
  called by procedure GO
! F! l7 l- k) y* ~# ZOF expected input to be a turtle agentset or turtle but got NOBODY instead.
3 c9 N# [/ O* ?3 s
(halted running of go)1 w! P0 F0 b# k( Y9 ]4 H- w$ L
& o3 w: m% H5 j% [
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~~5 }  ?" K' {# P: ?- m2 p* x
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$ O# j" ]7 Yglobals[1 ]; n. J( [! ]. b+ Q" d, f4 b* n% }
xmax
) Z+ S; G( c. F4 e- Lymax3 }4 V, Y7 E2 \/ }
global-reputation-list
" o1 f8 r& U1 ]- N  S2 o! s! k) p5 h+ X. B9 g! O5 A8 B
;;
每一个turtle的全局声誉都存在此LIST
; k/ w' ~8 y6 w0 i- G6 Xcredibility-list$ U& c5 O* U" d' Q8 V, p
;;
每一个turtle的评价可信度
" ]  r( m" a! S) f4 ehonest-service
  A3 D; {- s6 c* V* ^! ounhonest-service3 z# F& g( S. l  M4 L7 Q
oscillation% f. V9 o) m3 F2 R
rand-dynamic
2 P1 {/ }3 Y: e: |6 U! F4 t9 b% r]
# t7 \* v7 a4 n8 @8 r- I' p7 O
7 O7 S' i$ \+ p0 V! z$ y/ Rturtles-own[9 y3 b0 H) H+ [- v, v' ]* s; J
trade-record-all9 M0 A0 z' h. P& R8 c& C2 P3 e
;;a list of lists,
trade-record-one组成
3 C5 R1 Z5 D* y: g" r* ?7 Etrade-record-one' O2 r* {! t/ v3 L
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
; ^1 U+ n! T" t& q3 d+ w- V7 s. L0 L) r
;;[
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]]
0 o( N0 \$ s! Y' ztrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
" B/ i' ]' ~9 G4 L& Mcredibility-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
0 ^, Q. {9 S1 B, Eneighbor-total
# J/ l1 _, W/ _9 g9 z# Q7 b;;
记录该turtle的邻居节点的数目
" o' U; v, C+ O& Atrade-time! f% R  X1 S% H" |
;;
当前发生交易的turtle的交易时间
3 G4 E9 W" D8 S4 jappraise-give, S# s) M6 N1 Z# H) f. h7 F
;;
当前发生交易时给出的评价' \, y+ {1 Z1 T2 ?8 P2 f
appraise-receive
  Z- R  X: {) v) ?$ V;;
当前发生交易时收到的评价
0 W* v; Y, L3 m0 w. Z# k5 h( pappraise-time
: }1 T& @; r5 {;;
当前发生交易时的评价时间* J7 V/ b, I. K  p
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
9 e  T3 c9 M- C1 _! o1 L( A# ]$ Ytrade-times-total
6 c8 X9 Q3 R9 O( D. E2 w;;
与当前turtle的交易总次数8 H7 g% o: ^1 e5 r
trade-money-total8 j6 l! x, ^0 y, p. |7 h: i
;;
与当前turtle的交易总金额  D2 c7 {' O  R- S+ @
local-reputation
) t+ t+ s- `# }global-reputation( m: u( Y) ]+ O. d7 d; ?
credibility
- [; E1 h3 B* w& ~% X+ y;;
评价可信度,每次交易后都需要更新
- G/ x: t8 l: u9 g+ Vcredibility-all
/ p8 L- \5 @3 n& l* u;;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
. I1 O9 V% t% G5 C+ i+ a3 d2 ]6 E, q. q* D5 ?1 M" z
;;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
2 I0 U  q/ W- b" \) n& |; Icredibility-one
/ }6 |& B, f7 ?; S1 k;;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
  n1 U0 S+ B9 m! M$ Iglobal-proportion
* |: [2 \; O4 ]/ h$ g% dcustomer
( d; L! u9 @: g4 C+ ecustomer-no, I" ^7 G5 X$ h
trust-ok, u$ `; |4 q9 U9 _% X1 R
trade-record-one-len;;trade-record-one的长度$ ^! y% [" ~$ u2 ?3 c: _
]
  `, g4 O: N2 ?4 m2 s2 x/ C7 X! q5 X4 Y
;;setup procedure$ t( w; I6 y% ?1 x0 w

' l, g( G. j) @* N7 V: Q: E( _to setup
2 j1 y' W, ]6 I! H* u& z; T( M; ^8 \* v% M" G
ca
5 G, s# j/ L' N: f: Q

  `7 X/ @% u6 hinitialize-settings
- h5 ~$ m8 n" P" w3 f: {. J  v! {

" T! o; {. f0 D8 I5 M  Fcrt people [setup-turtles]

3 o' F3 k* x0 ^3 ~. l% F6 c( D4 e9 Y. o9 b$ X$ w- E% @
reset-timer
5 O: d; m$ v* J. a3 o' {0 B" u

' l$ {3 t) Y0 v' f- i( ~- V& s& epoll-class
+ S& u2 D' W) W6 W

5 S5 h# c+ g- {0 f6 y5 s  m- asetup-plots

6 _9 ^- s4 }6 D3 }( R+ O( O2 d& y/ U  \! M+ e; M
do-plots
$ T! S' K8 C' `" K9 K% @8 @
end
1 E4 H0 ?& `# e0 {& n5 |
0 i/ Y7 r. W& b2 u5 \to initialize-settings: i% O" J9 J# _0 {- F9 O0 h
, a, Z2 W+ \7 y/ f1 f2 T
set global-reputation-list []

, R/ }+ w- k! Q! u- ]9 j5 F9 }, O" W* c& e3 x+ z+ H0 s) F
set credibility-list n-values people [0.5]

( u) k5 k, Q; H5 O$ _4 H: c2 Y: ^' [2 e1 V2 c9 B
set honest-service 0

4 H6 e9 V6 h8 ~9 @* M
# w! N( u/ d7 J( ^set unhonest-service 0

! O4 q" C8 e, z6 ?# q# |( e. |6 S1 B: ~
set oscillation 0

. Q4 P1 `4 W% Z
6 h: s. D2 b3 ~& fset rand-dynamic 0
- M6 C8 r  x9 d0 U' `* C1 \! s
end0 }1 W6 M% z3 ]
( c+ v% n' e" F6 n( @# T$ U
to setup-turtles
! f' o" B+ l  a+ G9 h& T5 hset shape "person"4 u# P" e: R  H9 }
setxy random-xcor random-ycor
  \4 q: g  u$ [4 B* R# ]( N# Zset trade-record-one []4 H5 M. t4 l. z& h2 g# g6 Y

" o. F2 k, }; i; m, x/ @: a! i2 Qset trade-record-all n-values people [(list (? + 1) 0 0)] ! ]: o  t7 t6 u0 I
# m$ g1 Z- j2 b+ ]8 ]
set trade-record-current []
( h2 w& O2 c# `/ l: J  q/ Rset credibility-receive []
8 Q: L( f: ?3 M* Cset local-reputation 0.5
! o$ }3 s5 {5 q" {. F7 q2 lset neighbor-total 0
6 a) e% e9 F1 a" }; G; u9 ?: jset trade-times-total 0
# S" N+ n/ I, r: P$ @set trade-money-total 07 O7 y+ M7 I, _3 l
set customer nobody. g5 ^7 F7 l) y1 |. I& I; F  U) _' |
set credibility-all n-values people [creat-credibility]' \' R7 t  p9 |4 f
set credibility n-values people [-1]
1 ^8 i2 {% ^" l  i- e" j. R, Hget-color
$ |% `8 r. T% B4 c

( e' ?1 `1 V3 [/ vend+ y- L6 L8 ]* Y+ e' U/ k' ?
# a* ^9 G3 |% p% B$ Q5 W
to-report creat-credibility
, c$ y2 t, ?6 V3 h& z8 {" s! [report n-values people [0.5]
; M7 n7 e$ @2 x) gend
& d3 \8 K% _5 h2 B! q1 v! R- o( Y; [4 A5 a" n. q
to setup-plots
8 w  Z! D& h8 X) F2 v( J2 k! M& l" p; r
set xmax 30

& ]8 S; s0 t/ r  W4 b1 V( X+ A
set ymax 1.0
) k# g" y/ [  M- j

2 e6 x1 r9 i% @clear-all-plots
0 L4 @& a! b5 g* o

. Q" @9 k" |+ a% q4 p% P  k! z# Rsetup-plot1

5 l) _: W0 l+ |  d5 V
+ A; [  i  D& X3 T+ O7 V" csetup-plot2

- Y0 r' z8 k4 H$ v9 q; w& y, C% v) h
setup-plot3
, v6 f( W7 ?6 T5 I6 F4 z" {
end
5 W1 H4 g2 E3 B. L; ~# [' u
/ @/ m* L$ ]8 w# K$ s;;run time procedures
7 a+ v) ~8 n# P, i  }* w* w2 r- L6 p  f
to go
) z( `  l! f  a$ p3 Z; X7 E/ d6 v7 A4 D9 z
ask turtles [do-business]

0 o1 Y0 M5 r# m5 E: j; e$ `end/ K5 P6 d( Q: \4 s0 X$ }
1 ?" G# s5 O3 \& ~: U$ h3 p8 u% F
to do-business 8 {" r* v, C+ W; U" ^; y

# i1 I7 x- o: P6 c0 e- a! m% @5 _! J+ r. ~/ W
rt random 360
' C. N3 S, u8 U5 e% @1 o# B! F8 x
6 N9 o& j/ Z: v1 V. d2 O
fd 1

; |5 O& X$ ?3 h+ R4 h0 r5 q! v
; i4 `' j, O! ]* G# x9 ?, |& N( uifelse(other turtles-here != nobody)[
/ Q6 K+ v* b3 L8 c/ }

; R7 j* ?6 v# M. A2 Mset customer one-of other turtles-here

- s& Y0 o7 L0 K8 A" _: |4 G/ V* [" B) z7 y. M! L3 x; U7 U
;; set [customer] of customer myself

' s  @! b8 \5 b! L) \/ j; P; b& l( ?6 ]
set [trade-record-one] of self item (([who] of customer) - 1); E% W! q! d# }5 d' x
[trade-record-all]of self, _9 D6 E3 G3 W/ T( j5 W- g9 u. O
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
" o3 j+ E% j- ]) Z5 [6 _
: ^# ~9 ~9 b/ M4 I& q- n. d& [
set [trade-record-one] of customer item (([who] of self) - 1)
- s4 h9 w  d. ^) R0 D[trade-record-all]of customer
9 ?! Z+ R/ L% K$ w) _

5 @" F( b, L# K. X6 G* lset [trade-record-one-len] of self length [trade-record-one] of self

% W5 \) c+ F+ l- P4 H# j: k9 [
- `% ^/ m9 H. c4 p7 Xset trade-record-current( list (timer) (random money-upper-limit))
  \, P( u7 m1 F9 {; G/ g! s
( P6 j4 B5 C7 ~/ b: m; i' u" S
ask self [do-trust]% |$ h" b6 P3 q: \; N' `6 A
;;
先求ij的信任度" I/ q- c; l" r" u
% A2 O% Q3 H6 ^) g0 C* ^$ N
if ([trust-ok] of self)7 X* o4 z9 q" ]3 v. W( Z* c
;;
根据ij的信任度来决定是否与j进行交易[
% b2 E4 Y8 s# g. g6 Q- Task customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
4 n$ \+ N) O, E$ I' D0 E
" m) m+ z- `9 L0 N[
9 O. X3 m) H" X4 p' b- x) q
" d1 M- x4 m# U' H. Q- U! n) W* @
do-trade

+ l3 P3 [9 A5 m) v( \5 Y7 n& K( n2 ~0 g9 l- r% M
update-credibility-ijl

  }; F  @$ f6 I! v+ A
. v; b5 T5 C, B3 ~8 S: H- m, Oupdate-credibility-list
/ D8 V9 p2 K0 V  t

4 T' @2 j5 i; K4 H  d  N! G1 B: H9 Q+ R( H: u. i5 u  m
update-global-reputation-list
4 ]! r" U* R6 y& V/ u- R; h
+ S4 Z- h7 H$ b1 H0 D
poll-class
6 N! J/ m' q9 h' p0 l

7 g- K- b" D( E; X; `$ [3 Eget-color
) Z) u, J! _% Y, k6 X1 `

% \% Q. W( T! J]]7 ^' Q) u- o% {- Q
+ c- S4 E- M* h6 T
;;
如果所得的信任度满足条件,则进行交易) R1 _0 @+ ~5 f

; |' ?& ~; S1 o$ Y& F[

7 v" P$ g: i1 f" D# o0 b1 w6 S; M# G& ]9 c2 T
rt random 360

9 }" H4 x/ {( Y- F0 }5 u" }
5 f3 J! y; [* P4 u* @fd 1
8 ]0 T' c: I' E: j$ ]; s

& {8 L+ U/ f$ X$ J* ^$ v/ }]
' k4 }$ \0 T6 s+ V! c- D1 p3 G

: Q% z& A0 S1 Dend

& O0 f% n- }: [3 H' C; X; ?3 R. p; f) |+ Q
to do-trust
% |, Y# C- @; @) cset trust-ok False
$ `9 ~' n& [" a0 x' m( D- a' b! \  i9 C, C" W- n. {' r

+ q4 W" d: G: _: `let max-trade-times 09 |1 J* X/ F* w2 B- w, }& B
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
! w1 s$ s3 p5 \  qlet max-trade-money 09 A3 a; A' N. y" e' \
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]5 c, V( k$ A3 s. {- O
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
. \& R: j. M4 X3 ~& S& E% u
4 k5 U$ U9 f0 {0 S
% {+ \- R& G& c3 `
get-global-proportion
& F; ]" M' Q' Q) @; Y2 Q. m) k* zlet trust-value
, u* c5 t1 y8 Q0 l& {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)

% L9 Z& w) U3 uif(trust-value > trade-trust-value)
9 K( k, D1 r# U4 q[set trust-ok true]6 }8 _; _% ]# n' H& t! z
end
% |# N) X9 m# @4 i( N% j8 b- M* m3 z- J: T
to get-global-proportion: F; m7 M( E% y/ B) C- T& ]" A
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)  V' G) L* L* I- p6 H" E8 I& F
[set global-proportion 0]
- W7 O8 `. ~1 F" `[let i 0
5 G: f8 D  O! K4 a0 \0 x; \: |let sum-money 0
) s, O  w3 }$ Awhile[ i < people]
3 N( [4 s+ k& }5 u[
3 d, |  Q# Q6 q+ a9 Eif( length (item i
* x/ u# o, g1 w+ t/ _+ `[trade-record-all] of customer) > 3 )

: ~6 B% |) L1 Y; Q[
, b  P+ N; G! b+ t' R/ b2 p) Gset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
" m9 ~0 D4 J; X% h! g]3 b- }, I' t6 G+ E
]' Z0 K* K8 I9 _' K4 r
let j 0$ C- M# E' |2 Z( n3 E$ L% T
let note 0
5 l+ _1 \: E" M* B* cwhile[ j < people]8 K8 P! b. a  p
[% ^" E1 @$ r, r% F, l5 J9 a% a
if( length (item i
4 q1 {* [5 ~1 j% W[trade-record-all] of customer) > 3 )
( Z2 r9 U, C; g- \- p. }
[
# `* M3 m& s  X0 H4 V9 ~" Z1 Bifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)+ x- c. I8 V$ X) u
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]  o5 Y! N& s' p' v( P4 D& \. G
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]$ l4 A. h, c2 |; L3 m1 m
]7 q+ z- H% u  S3 t* Z1 T8 q
]3 c0 \0 S/ f) G" w
set global-proportion note2 g+ j0 ?6 [& ^# w9 w
]7 L0 J6 m( ]4 P' o7 m7 A- \
end! l% R; j9 ~; S. X! I8 \' b
0 H3 z  e- z1 V- `+ t8 }* ^7 T. p
to do-trade
5 E5 _: z+ w* a' @( F, f;;
这个过程实际上是给双方作出评价的过程9 m) V3 m9 ^. u
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
; I. q# _5 C$ X) n9 uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
3 ?2 S: u3 Q& qset trade-record-current lput(timer) trade-record-current
' Q  o, f- n% x1 G! ^;;
评价时间
9 i* Y5 M% T' m8 U( k; L) Vask myself [
! |! o+ D6 c. \6 Z) @9 c/ o1 zupdate-local-reputation4 z7 z6 F) ~4 d% g
set trade-record-current lput([local-reputation] of myself) trade-record-current
: Z: b* S9 A& r7 v]0 P; X3 o( j# H7 V0 M
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself/ }  V" g. w* K
;;
将此次交易的记录加入到trade-record-one3 I& f( K* o  j  K
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)* r, E& V7 U" o+ O6 J. s
let note (item 2 trade-record-current )
# w5 U0 R6 D1 C: @8 `set trade-record-current
4 i) d4 ~$ p6 {  E: S(replace-item 2 trade-record-current (item 3 trade-record-current))

% ?3 L! p8 [/ F4 p# _# A) tset trade-record-current( ]7 o3 ^$ t$ x2 T% I
(replace-item 3 trade-record-current note)
6 [) d' `+ f% o8 u/ d1 O! N& D/ o$ X* p- k, ~1 v9 R- ]

9 s. s4 }4 H$ B% zask customer [& @# {5 b( N' H4 s
update-local-reputation
5 O" }8 H) A! }( Tset trade-record-current
: N7 ~6 ?* q3 d' ?- |9 B(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
# A, D/ R0 }4 ~. @- ~
]
" W0 l3 F9 |; [: F
+ B: s* H3 N2 x) x7 w5 }

; S5 C8 I( f1 P# V. n" L  Aset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! k0 h1 e; w& G
9 T  L, e- B1 C1 _3 y! ]1 d  ?8 g
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
. }3 H2 n# N" S) ];;
将此次交易的记录加入到customertrade-record-all4 A5 y, d$ R- I  D$ X
end' P" U( P: g  ]& `
3 K$ T3 S" [& J* |6 I0 w; f4 n
to update-local-reputation) i* g: f4 x* ]+ d6 z4 i
set [trade-record-one-len] of myself length [trade-record-one] of myself& l+ G. B# n9 S$ R/ H; ~
! D( d& [; e& l) O' D& |
5 Y0 `# G& r7 v7 l) y9 K. {
;;if [trade-record-one-len] of myself > 3
# F8 N9 Y! r# H. W% ^" |  O7 H7 z3 b
update-neighbor-total$ j0 O. E* n- i9 S/ z; M# @
;;
更新邻居节点的数目,在此进行2 A0 |  j9 I/ Z
let i 35 s4 V1 \7 T0 n" ^# X+ S0 N/ q, ^
let sum-time 0
; |0 |. x3 J7 ]4 Lwhile[i < [trade-record-one-len] of myself]
, N7 v' r1 C) J: e% V$ }9 _3 V' n[+ i! T$ c* s% J6 n* f) H9 D6 Y
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
: v1 v7 {% \/ g3 v+ ?- iset i) d, Q9 c  Y) G( ^1 q
( i + 1)
# Y: c+ v2 O5 t% R" t. E) F
]- Q) I. f& A) m. B3 ]$ c
let j 38 w" z' {0 S+ s' Y- f1 ^# d
let sum-money 0/ g  }& U: L* c/ Z. x' w* ?
while[j < [trade-record-one-len] of myself]
1 l' Z+ i: ?9 O( N( v& \) r8 M[
' u9 o, Z; @# u3 E7 i6 C: qset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
7 O# U1 `% q- U: z; I0 e- N' k2 X" `  yset j% R- c5 q. Z( L5 H+ U  M2 V: r
( j + 1)
5 M$ i5 C1 {1 \) E7 L, I. ?
]
. t$ T4 M3 \& l! O3 R3 `% u! ~2 wlet k 3' j7 |- W7 i0 R  D# V
let power 0) `+ i8 Q3 O; H5 ?" l) h
let local 0
$ T" }& [, C6 D1 e2 @while [k <[trade-record-one-len] of myself]
( S/ l5 K) Y, s7 n[
* }) ^" b/ D. k8 p2 dset 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) - M0 d, d0 q( E0 u! c) o
set k (k + 1)
, K4 O  z4 m# l]: |9 q; c0 e: n7 d
set [local-reputation] of myself (local)
; S' c9 I3 @6 Wend" {9 g4 E2 o% r; h) M  D

- K- O. t/ @9 o3 z" D3 V6 L1 I* _to update-neighbor-total" o/ j+ H' p. h# e8 X+ P+ @- C

7 L: ?, H* I0 xif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
( z4 H, p5 ?, I8 k+ e0 }8 M0 @4 X' a9 E) x

' _1 ^+ S& T1 K& Zend7 H/ `) s. H- H7 r! c7 U+ Q
) U/ S! l( g5 V; k5 Q4 q
to update-credibility-ijl
# D, q7 `1 x! W' e$ ?7 u9 f0 j0 C9 i5 h
;;
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。5 o+ y' r! t! j7 D2 W# v/ |9 s# m
let l 0- M' z& ^' d( N) e
while[ l < people ]' [. m' M4 ]5 I; a1 t
;;
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
9 P4 `3 ?5 u" R4 d[# F, q2 k; r% C7 e  d. P! c
let trade-record-one-j-l-len length item l ([trade-record-all] of customer): o) |; o# e* x' N6 v( y
if (trade-record-one-j-l-len > 3)9 @& E$ c3 Y5 t; o! r' q8 G* R
[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-one1 d! O- {$ n2 {2 j
let i 3
- `- z8 E% g% vlet sum-time 0. B" I  y9 f  X: W8 S
while[i < trade-record-one-len]
1 [- D1 ^$ ]5 V. d4 c! z3 A8 B[0 U+ b% i, v; m* G
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
+ M$ A9 ?% x6 I. i/ E( j+ p  kset i! |% c3 z+ d4 |8 D3 ]7 F9 w8 }' d
( i + 1)
2 T4 V# p  }0 C2 ?! N, u
]
- Y0 n/ @8 k* c& B4 Q# Blet credibility-i-j-l 0
2 ]2 ?; z9 V* `* r" [+ f2 w;;i
评价(jjl的评价)1 Q2 G0 _. {  i2 f7 C6 O
let j 3
& t1 P! n# y+ a$ D7 t5 Q4 plet k 4% M& W( U2 F8 r- e2 D% \
while[j < trade-record-one-len]
3 j( ~( d) C6 f[/ v+ K. Q; K+ p  T. Q
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
0 T& ^( b% G& jset 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)- a) F; @/ I* f
set j
2 E& P: l9 N9 W7 @! q( j + 1)

- }4 a! P% j1 U9 {6 q]+ C5 c3 P3 a% F/ `
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 ))8 |3 h& R* W  v0 p
; h  ?& ~+ q' g, p

( ?  N! }- A2 B. r# B5 }let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
! [2 h1 b1 J' b) A8 Z;;
及时更新il的评价质量的评价
# L0 d: @, i7 o* P6 qset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
8 S: y$ [, Y- n. L9 i# uset l (l + 1)
  X+ Y9 K8 j8 x7 ]; H]
) U/ n5 o' k# x6 h' V* }end' B' }+ F9 Z6 M

+ }2 R) X+ `. I8 zto update-credibility-list
" G& u% c) x8 hlet i 0
5 m  i' s/ n8 ~6 |) Bwhile[i < people]
' }" ~" e* R) ^[! ]' Q7 s9 D8 r6 C( M: Z0 D3 a2 h
let j 0
: g' C" z1 z, n3 v% A! Olet note 04 m0 {: N1 g: D' @9 ?, Z7 I7 m
let k 0# Q: {, Q+ j7 o$ B0 ]6 U
;;
计作出过评价的邻居节点的数目  ~; C3 M- ?" q/ s
while[j < people]
! s! d' n: @/ w( b# h1 P* @[
+ A, f& A& K9 M7 \' @1 |if (item j( [credibility] of turtle (i + 1)) != -1)" [  J4 _! |0 i2 \+ ^- R* A" c; a
;;
判断是否给本turtle的评价质量做出过评价的节点
& A' c! C- n! o' v- h/ i: G[set note (note + item j ([credibility]of turtle (i + 1)))
# @* O2 ~, j# k8 k: W5 t0 v) a;;*(exp (-(people - 2)))/(people - 2))]

' w; N* l- v! }0 C( H4 |: P+ dset k (k + 1)
' q- C% T8 h0 _% `2 y$ e]
- d4 a! V6 B, V2 ~+ m0 W7 U4 ~0 M0 }! Uset j (j + 1)
# ~9 O3 I( C  s+ S3 s3 X]  P. V3 p9 f+ h( K6 R, P" j. q0 Z* }
set note (note *(exp (- (1 / k)))/ k)
: v8 {7 P# _; p! E6 u7 xset credibility-list (replace-item i credibility-list note)& s  P" z6 F' Q3 k* L! L' n
set i (i + 1)* o. e6 R3 _* g! g
]5 Q: {" y3 c. U6 F
end% a$ [( `9 r/ s5 F1 R$ t8 _$ n
. t! v6 x! e4 ]% y6 H+ F: {
to update-global-reputation-list
/ w: f0 T" U, m7 h  Glet j 0/ o$ z- ]. ]0 O" c7 ?* O
while[j < people]
! |0 p2 k9 u+ f( M9 s. U  Z, D0 k0 k% [[
- q$ L4 n+ o- |" m+ ^let new 04 B% h, R5 ~$ z; A8 P
;;
暂存新的一个全局声誉* g& {1 K; P# P0 {: q: T2 `
let i 0
5 S, h4 ?1 Z& N! E" w- elet sum-money 0
- q& e$ Q1 p+ k! t1 O6 ^& F6 ?. ]let credibility-money 0
; J1 `# V4 @6 U6 Q, y$ Wwhile [i < people]
) m" u! t( C0 D: C. X% V# _[
8 B! k3 F& U: w: I5 n; ~7 ?set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
+ M6 y+ @$ z% l3 `( K3 }1 w, @' Yset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
- \; k; \5 I2 o. kset i (i + 1)0 u) C# B* x4 p: p2 z5 U
]
* n! h* r6 X1 h) ?. {let k 0
5 S" U) p" D( i5 }3 o0 U- i9 Elet new1 0
) \! x, ]7 U7 l3 u4 k# Bwhile [k < people]
; h3 s' r* ]( W' k3 z6 ~% ?[+ Z! P8 y0 B$ V. _+ s0 g+ o
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)+ O7 n: f. {! e2 @
set k (k + 1)
3 M* X8 ?( n# e8 I]4 q) B" g% z/ P2 ]1 K$ i
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
& Z6 Z3 B' L+ C0 ~set global-reputation-list (replace-item j global-reputation-list new)
/ f8 I$ g* N4 v  `0 B7 ^set j (j + 1)) Q6 A  ?. b1 s7 f2 }
]
' s& S+ a9 x% _# Aend; K" P: M) M& G  a, w7 I8 v
% z& P1 X0 Q! j$ l! z" s0 N! [, W
. E/ V7 e& H/ A% {
6 n! _, l% {8 ^$ ~
to get-color8 }0 U8 k$ ~2 x) O

7 K5 l& a. |  l% Hset color blue

0 r7 _, ?& J' C* Aend
# @2 e! x; F5 ^- T: k) R9 K! S) U
to poll-class
. L# l. b9 r9 Wend8 E6 y+ B9 t1 ?' M& q6 g2 S7 k7 V$ X

) G1 b5 S5 O5 H+ F2 J$ {7 }to setup-plot1
7 q3 Y- D0 k% |% F+ u0 F) k6 S% Z3 }! n, \8 C1 s% Q7 b" V
set-current-plot "Trends-of-Local-reputation"

! b; v  D% [3 b+ x
, c- s) W! @1 l# u' Z' F, ~: N  Qset-plot-x-range 0 xmax
1 F4 x6 J8 Z- g) `3 a" x
' ~! V$ s2 k! H% {* c) J+ I# y+ d
set-plot-y-range 0.0 ymax
% I1 p% B, _5 {
end
% V4 y. g; S! o& D
$ x3 Z! j3 `* E" Fto setup-plot2
, ^; E) M! x, t( f, s5 k! A' _6 @; m# t1 ~1 o* A2 ]
set-current-plot "Trends-of-global-reputation"
& O7 W: A9 L0 f+ R3 }! B
; r! y. i. K" I. |( }
set-plot-x-range 0 xmax

. I0 c$ i1 v- N8 B1 s* Q: L; I$ o, |
set-plot-y-range 0.0 ymax
' o/ F$ h; S0 k/ ~7 {  c: Q  b/ P
end
% a: L0 U/ d8 U: i/ g( o# O2 f# k3 G' C2 z
to setup-plot3
3 T" N- Y/ T5 @* P, ^& s6 K/ M1 w' O" O, w) s! h: Q
set-current-plot "Trends-of-credibility"
  a" N  w/ ^6 A( a8 J

/ p+ c" U! g/ o6 g0 Dset-plot-x-range 0 xmax

5 j0 t' s7 _3 n' @5 R: l' l. P& p! V! M
set-plot-y-range 0.0 ymax
, Q# r2 }7 w" m% Q; H
end, D- C( V! v7 X1 H9 H
5 i: H' u) g1 ^& B5 C5 N
to do-plots1 r. g$ ~9 s5 n! U" J; \& G9 M( P4 S
set-current-plot "Trends-of-Local-reputation"
2 u) Y+ x2 }7 X' s, D: G- R) Mset-current-plot-pen "Honest service"
( I; |4 ]9 J5 ]# ?* G6 }# l) vend  |1 ~* s0 i1 a7 {3 g) U
% |0 p  ?; c' n; d
[ 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.
# B: y' \, d( s3 K7 O, M
- R# v* k9 n' V# T" Z) v: c9 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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