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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:9 t0 n9 Z2 m9 ~3 k- I) D
to do-business
* @, ~; M5 D! ?/ V rt random 360
% G( f" Y$ T* J( ? fd 1' _5 B0 N' F, W  ]& f8 }
ifelse(other turtles-here != nobody)[0 _6 Q6 K6 h4 e$ ^& a
   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.
% l0 n' z* ^! L- e   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
; W! B* m. e# N8 }* _' N' V   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer7 @8 X! i" M9 K" H, D+ P
   set [trade-record-one-len] of self length [trade-record-one] of self
2 U+ m) O( ^2 q3 z2 ?# q# b! s   set trade-record-current( list (timer) (random money-upper-limit))
8 w5 g, u$ h$ r+ t% H: E/ _4 w9 p( G( M2 I: }9 i( m
问题的提示如下:4 J- _* H5 `, B* X  N* b

7 A7 b4 U2 Q+ j% ?( U( Merror while turtle 50 running OF in procedure DO-BUSINESS
5 B+ ?, O- O  ^. _1 T7 Y: n2 `! C  called by procedure GO, `* a* q# {: [' q9 B
OF expected input to be a turtle agentset or turtle but got NOBODY instead.3 u; k5 I& _( F/ d& n: g% C
(halted running of go)
$ R7 a; I' j  N  U' f3 ^
6 A9 q& v6 R5 f- L( g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~~4 `& i- ^6 e0 t( X: a
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' n5 B: y! O; F2 ?6 d  U4 x2 w: x& `
globals[
" I  o3 R! }" k+ zxmax1 [- X& E; a/ _& k
ymax
5 k; z/ G) W- sglobal-reputation-list
# d) _9 e( V& ?* ?1 F
& F$ f6 c  C) `# y;;
每一个turtle的全局声誉都存在此LIST1 {, e' D) P0 K7 b, n2 W
credibility-list
/ C  x/ ~# @, Q8 j; e6 U8 T- W;;
每一个turtle的评价可信度3 ?2 @( G& d" K) M
honest-service
! }4 A8 d6 J) w; u2 nunhonest-service9 Y1 n! ~; k: P/ ]6 z/ ^
oscillation$ ?/ z0 r7 S& P2 R5 p: x
rand-dynamic# M0 \1 \. K; q: I# l
]
* t' h/ x( i0 |" F
# P" Z" J* S3 D3 [) q. s; L- Wturtles-own[
  y/ E& u4 x- }4 \trade-record-all
$ C. L8 T5 I8 \; ~# |: `;;a list of lists,
trade-record-one组成
9 N4 _# Z/ ?0 {! _0 m) N9 Btrade-record-one
8 A2 B" d! R3 w3 F+ K' C$ 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
' ~: K, h6 l- E' o0 S2 U9 @7 L. y% r3 v2 Y6 Q( @) l# [3 C
;;[
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 [, f6 t" ^& E/ }% F( v3 \
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]  p- x( H+ _% q5 l
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# o% \1 g9 w; a* o+ h% W
neighbor-total- w4 i! Z; Z. |
;;
记录该turtle的邻居节点的数目; N# L; R$ y# Y$ @3 p
trade-time
" y7 O  G7 z4 {3 ?. n7 m: z( e;;
当前发生交易的turtle的交易时间
4 W: d6 m* e1 P( Z5 d7 a5 G+ x0 Q$ nappraise-give
% U3 q3 P8 P$ x1 [8 \;;
当前发生交易时给出的评价9 e- K" C3 ^, b7 v. ]6 Q
appraise-receive
7 X* y: N$ I# _+ B: M8 s% @;;
当前发生交易时收到的评价9 W, ?8 H% i$ g2 ~/ A6 c
appraise-time( `4 f! D( e' I) ]+ T4 p5 P) }
;;
当前发生交易时的评价时间& z& e: S2 D4 j4 X4 @: i  h" c
local-reputation-now;;此次交易后相对于对方turtle的局部声誉' j- w* I3 K$ Q6 u
trade-times-total2 ^8 |- I9 ^9 t. v2 N9 D& L
;;
与当前turtle的交易总次数# d" ?7 U# ~) J& a9 p3 n" g
trade-money-total
% c0 z& I5 e8 l* k' E+ z+ s;;
与当前turtle的交易总金额' r, h, _1 L* S$ L, ~  H
local-reputation
6 b& _% I3 T2 i) R6 r2 Eglobal-reputation5 ~6 v. n; F0 R6 B: I
credibility" _  W$ c. |) I) N7 @$ L
;;
评价可信度,每次交易后都需要更新
/ V6 q* [0 \- t- a7 d! R. xcredibility-all/ b7 m$ ]6 f9 f8 G
;;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
3 V' x, Y# J% B
$ N) `4 Q, _( y$ u0 ?;;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; l# r% c* P# m6 [; g- W
credibility-one6 O) d. Z- _3 E$ X
;;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
* Z7 x6 B1 B8 [7 l, uglobal-proportion
/ ~" C& u3 ?8 U' m# j* Scustomer) S0 r; j9 G/ C& v+ C! `, v: P
customer-no
2 N+ @' V" X) P: Q" @trust-ok
1 H. M* u8 {! _; A$ Y& `1 Vtrade-record-one-len;;trade-record-one的长度
7 D$ }9 p  D- n]
% @  f2 D! [. N; |
! S9 _" `8 m( \' R: c! R;;setup procedure% X, z; `. f. t/ ?8 X) f
0 J# D$ W% ]) _. O6 E# K$ _7 ?
to setup
5 O" }0 P1 M9 a1 v! s! E" g. I6 `
ca
7 q2 h8 V" y6 z
9 f% L8 I! T) i& g
initialize-settings
* |1 V9 a8 M% K
0 V$ X/ \; \) q
crt people [setup-turtles]
7 c1 f* \# P; f- n- [7 P

+ x1 A! Z- T/ I8 L$ `3 i, areset-timer

4 L7 l$ U5 S3 M& ?2 Y, H+ `0 Z, i* T9 k* x! U! M" p; y7 Y
poll-class
+ h- n9 U1 Y' w& Y# }: c
" \2 ]5 Q7 V% s
setup-plots

' r# d  S6 K& ^7 f, x4 W+ l6 N$ f3 T+ v2 p% T* W
do-plots
. k+ a6 L# M' Y+ D: J# z
end
. G$ Q: d; w" z2 k9 A
8 g; c# _! _+ O& \! w) z# \to initialize-settings
8 _9 n  ?( F; S& u9 r7 I3 C" {( x4 G
set global-reputation-list []

4 Y7 B& r8 z% X% y( w# ]# B' R$ G8 J9 t0 T! a8 L
set credibility-list n-values people [0.5]
: f& K& ?- Y5 N

% `, R6 J0 _3 `set honest-service 0
- p, I9 S4 y3 z1 \

% b: F- O0 r* S6 k9 h' cset unhonest-service 0

" u8 E, b* L9 h9 \3 X+ x) m5 Q+ }6 ^' G0 Z' w
set oscillation 0
$ y+ z; F# @8 Y8 j' \

8 R/ W& e" z  r, l& }set rand-dynamic 0
1 `! y1 y2 \+ ^& S
end
  d' `- G1 @5 u* U
" {$ v4 \  {( z! a5 o. l2 fto setup-turtles
, d; m  [9 p8 \" P" p0 Bset shape "person"
  n$ K0 R+ ?! Q5 T6 _( c# p# Dsetxy random-xcor random-ycor( c) B- J4 T- D, d2 ^
set trade-record-one []5 S# V( s  Q3 P. i" ]

) }; G5 }  L* R3 ?1 O, nset trade-record-all n-values people [(list (? + 1) 0 0)] * {3 G$ A. A( j4 q( F

2 N7 ]" {% Q/ y! J7 q; Oset trade-record-current []
- Z  v, M) o. f' `set credibility-receive []- z1 J! g* u) F7 f; ?2 Q0 t
set local-reputation 0.5
: g5 H" _; M4 k# B& m+ x& e" qset neighbor-total 0
, W$ A( }- n; O, U) Y4 Y6 u( Sset trade-times-total 0
! k' w/ W3 K$ V: h6 Yset trade-money-total 0
' ]/ G9 y% f) k1 Wset customer nobody
, f1 S  q& Z8 \7 m! hset credibility-all n-values people [creat-credibility]
" V( ]3 ], _' t7 q( Bset credibility n-values people [-1]
% L+ F& ~* q! o/ S" v; tget-color& d: @" \7 M$ g& X5 Z' A$ \" R

  @( P" _3 G, Vend1 o! c" u6 A, g& y! ~1 k
; }/ P3 u3 m4 V2 e6 r4 L
to-report creat-credibility
! b6 @- k* _' D) \4 Freport n-values people [0.5]/ A; V7 L  x9 E" e6 {# m
end
/ h& j, X. }* _2 Z! B% |
; q4 h5 z  e4 V6 lto setup-plots
% o( d# Y7 B5 _1 D% E! v% x+ n& p: M0 d
set xmax 30
% ~/ {+ G8 ?( H4 D5 i5 C% N

" v0 H- K* }/ Y3 [2 @) pset ymax 1.0
7 j" }. R; _. @& L" T' @9 ^

% L6 G3 F* m4 w0 _3 x9 O5 d5 tclear-all-plots

3 @: b/ P) L- M! f, r, E5 V3 ~- f# |; B# v: ~
setup-plot1
, K. [6 i( m: Z. b+ j
  G; W% F# h- t+ J$ y0 a. K
setup-plot2

+ b. }" A8 [" V8 H4 U* o
& M9 y4 C( j# F+ C- ?, s8 d/ b! Qsetup-plot3

; v5 c5 N7 S7 h! Y0 cend7 Y* v9 a( R) L# D9 @

+ V) h9 D  }2 T! G% f0 Q: J; s; @9 b;;run time procedures! C* c0 |/ ?# w9 F  u4 j

- d- o2 I' F) Z7 O( r7 p+ X/ Ito go' a& r+ z) U. L0 I. H$ w2 Y

) H2 b: ]% Q6 v" vask turtles [do-business]

/ F! y( o, x) e) ~% `" bend
9 V/ I( t1 D3 F
2 @+ X3 a1 N# f8 Cto do-business
2 P* f' B. F. [0 Y, \

5 S% z2 b8 S; N! T
! g7 h6 g+ G; R5 q! `6 Y9 [rt random 360

# l4 S) {+ \3 S$ f" z4 Z2 r4 A8 c% ?- z$ G# b6 s
fd 1

! w2 ^( r  e! l5 k, Z. m8 w
  [9 f9 [3 J6 x- }. ^ifelse(other turtles-here != nobody)[

7 B& @& x3 {* O9 X9 u2 D4 [/ Q
# N8 I, P: k) n# t1 D3 C2 L( l) i8 aset customer one-of other turtles-here
  N- D3 f% n$ P0 F

& k9 u: L2 _/ O* T! {" u( `  i;; set [customer] of customer myself

# V$ I# h$ u. k- b
& {$ ]& p: k: O% Z1 e, l- M( w. Eset [trade-record-one] of self item (([who] of customer) - 1); Y7 p/ K$ v( U9 e4 X
[trade-record-all]of self
0 B; D6 P; D" W+ v. O% g;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
4 |# Z! e" L& B4 m) o) p0 ^9 J3 @5 C

) X2 D) ]4 q2 b1 \# o, D+ Iset [trade-record-one] of customer item (([who] of self) - 1)
( U& j1 X1 P+ I( Y9 c8 _[trade-record-all]of customer

" V: [6 Q2 B* a# S3 q
0 Z, f: m0 I. L$ t* dset [trade-record-one-len] of self length [trade-record-one] of self
6 k' B+ T* \5 I7 W% ^

8 K; V6 y7 b( k, J" z; d& wset trade-record-current( list (timer) (random money-upper-limit))
% d) U: g$ W1 n0 a$ q, E
- T  h( d& v2 M. V5 i7 _
ask self [do-trust]; e! S4 D! ], d& K# |
;;
先求ij的信任度
( e* x) `. x7 f( l- D5 u& q" ]" [8 i% i: o3 Y+ {" L
if ([trust-ok] of self)
. p9 `9 k, U6 o- V;;
根据ij的信任度来决定是否与j进行交易[
' }5 i5 L% G" Z7 I" w9 sask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself) V$ E0 L& q/ `) o- w

4 u6 n" z6 @4 h( B[

" g1 \2 c( ?1 S: _5 n. R" z
( X" g0 E( M0 j8 F; @' ~do-trade
% ], _2 W7 L  j1 C1 e9 u( n6 C

: D* B/ ?' B8 j. x& V" Q7 F% S$ @update-credibility-ijl
- {1 j. N, @3 @; g! B9 t

0 E+ U! ~- w3 k: E$ f8 n! a: ]; Qupdate-credibility-list1 M+ E; u" Y8 j! N7 Y9 |1 x2 w
% x- I# z4 R- o3 P' n
9 M, N4 U! i7 {' Y
update-global-reputation-list
- ^* W  w) g) w3 j

4 y7 w8 `+ N. {: d3 u+ g; f& O/ W5 Fpoll-class
* d% @( }: O' T2 @) V, I" N
# E: m6 O, M5 |$ b. h1 e
get-color

3 I& O4 E. j7 B" Z* b
  a& O% W+ e7 L5 j+ Q3 ~0 h]]1 k, P8 t4 m% J5 f1 C
3 q5 S3 S* d  S8 a$ D- y: Z
;;
如果所得的信任度满足条件,则进行交易
4 c, N" l; m6 S5 E) l- O4 R
, l7 j) v! y2 p( d5 b[

8 L, a9 F: f2 N2 W; N% }
& P& h. d( I9 U- k5 u' K) p0 H4 ert random 360

) I9 a% J$ m' k( H! v; Y' H, u3 r. Y4 Q0 ^. u( W5 I1 y+ `" F5 Z8 C
fd 1

. d2 V6 t+ W, x8 P; {! o" `/ @, f4 Z% ]) |# U9 j3 J2 Q
]

% C6 j. H; F8 ~
, q  Q! t" [3 b5 h) U* l7 |) T) uend
  k. F$ ^) E7 {6 ~3 \' }

: V7 d8 C' Y' B* q3 x5 zto do-trust
1 o0 q9 V, Y. t) K  s4 cset trust-ok False& ?: I* u2 d4 ~5 p

3 D' Q" ~7 |1 ~. I; c, w1 i

+ Z) e: Y4 [; s9 P  l6 g7 Olet max-trade-times 09 c! R9 S0 J4 }8 \  i/ [
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]# K4 x1 A& X5 ~0 D" R. O
let max-trade-money 0
# H. H( I" M$ ^  Q6 f, eforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]$ E0 R1 p4 u* \. N$ \9 y3 G
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
6 [5 @4 t+ |2 E+ G1 P3 k5 E7 v5 k7 i3 L$ Y2 m# L8 N7 U
6 j; t; z& u% X- R& f1 p5 C; R
get-global-proportion
. h# Q" S8 O% I7 D% Nlet trust-value
7 n: y# L* }, V, L# plocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

+ r7 O4 o+ p9 a8 s( o9 Qif(trust-value > trade-trust-value)& ^) l5 q0 Y- P) ], F1 o
[set trust-ok true]+ F3 u, C9 s$ w8 p4 H8 Z
end
  ~. }7 y9 y% e* c1 g' Q% L& F' V9 X
& `! O5 _% G8 G6 c8 |+ gto get-global-proportion1 p1 x3 N2 o: y9 n( r
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)% x5 z# ]( V. P6 p/ C
[set global-proportion 0]) J8 _  \/ g0 \5 {7 i/ k2 u
[let i 0% k4 H% J9 y* D" |. S# r5 U- q
let sum-money 01 O8 H' d6 n8 g6 J, ~5 U; B- n
while[ i < people]# c( r" y& O+ J/ |6 ?
[. S! S+ s+ c4 A
if( length (item i2 o. k0 F$ R% y
[trade-record-all] of customer) > 3 )
& Z& B) Z0 o& |# X/ P
[
) @( z1 ]9 P6 m1 h0 _$ Y* lset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
% w3 z% v, f( D" G; b6 Y* c]' y' D# }) y# Z4 s' F0 a' c8 S
]% ^( f. R* |+ L8 ?; A! R6 ]
let j 0
* s9 j1 P5 R/ G& ilet note 0
. ~& m* ?) H, b1 T5 ]while[ j < people]  w% p% \1 F! {8 I3 L
[
& I# E  y4 M+ A( ]6 h; B8 I- \4 Bif( length (item i* m: _: F; c' {* @. X+ o: [4 D  q
[trade-record-all] of customer) > 3 )

$ B# T( n) _% D1 I, R6 Z[
8 a% B+ T% {  G/ w9 m6 s1 B0 _ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
( \3 C- c/ v. v2 c[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
$ C) @- r6 A" r& X2 \& S6 K7 `[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
' M( J% E1 F2 w! o$ |, ^: H]
! Y9 x5 {" {) q* b]9 x$ u3 C  z' y4 G6 e' o
set global-proportion note, r$ [  d3 h/ i7 j
]
8 }2 a+ [! Y4 Q7 L9 B6 i8 Gend4 |9 C/ A' X# h" u+ I: T
. f; T/ M8 T0 ^$ E: B
to do-trade
3 l$ g/ F6 \, {1 z- j' D* j- t;;
这个过程实际上是给双方作出评价的过程, b& o; ~; P1 ?1 ]2 u: J. i
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
% o, t+ g6 n! Z3 s- u% l3 q+ _set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
' Y* T3 p, J. `' |! W  B! fset trade-record-current lput(timer) trade-record-current
' r6 r. y) U( q3 d$ ~) z/ A;;
评价时间9 N! T4 o5 R7 r) i
ask myself [$ p5 h. Z9 j& }0 t4 F% T
update-local-reputation
$ z' n0 T) G8 W5 H5 s0 }set trade-record-current lput([local-reputation] of myself) trade-record-current& X. B' C6 K0 N
]: ~( t: [) L# B5 x
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself' J+ X3 P( ~) B, S4 _% G/ b
;;
将此次交易的记录加入到trade-record-one  s$ ]  v8 ]2 |, d6 a
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)3 O. H# q9 H) K0 u9 P+ ]
let note (item 2 trade-record-current )
+ J6 M; Q, }+ u( l5 `( vset trade-record-current+ s/ _0 Y! h7 a& I2 |8 O
(replace-item 2 trade-record-current (item 3 trade-record-current))
2 X/ ~+ O6 T5 h6 }
set trade-record-current
2 q- N* t4 i5 ~" o/ _. m1 j(replace-item 3 trade-record-current note)* c2 F7 u8 S9 A; R5 V! _6 q# K3 w% o

' z7 \8 f: Q8 |  C! I- U+ |4 }& k2 G

& J6 y5 m2 j, Uask customer [, B7 @, G7 X4 Q7 Y: E6 N' ~4 I: _2 p
update-local-reputation
, ^( k: b2 y3 \, ]$ n3 gset trade-record-current
; e, A# N( s6 P% a% N; v(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
6 P, `+ l7 H0 i. e9 L' p
]
. C$ j, B) B4 B% h9 P
$ A5 a* b4 b6 e

6 t  f- |$ p2 A$ k, U+ kset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
3 M" I; W( B+ ]4 A" ?$ t

. Z  n* A1 L) ^set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)), g+ S7 C% p7 [. O( Y$ c  }4 n
;;
将此次交易的记录加入到customertrade-record-all
) O+ G; v( u' mend
% |+ {) r& O+ ~4 `; E8 v2 M! b
4 R) v% n# d; A- N7 ito update-local-reputation
) _8 L0 x$ H$ T% [* @( @% Pset [trade-record-one-len] of myself length [trade-record-one] of myself" z; h+ y: F! k5 k, H% Y$ `

: O9 ^, L# F' i/ g/ h9 Q4 Y' h' Q
9 u+ ]+ O! c( G3 Z% v;;if [trade-record-one-len] of myself > 3
1 t8 N  r1 s* i. X$ I6 v+ a5 a
update-neighbor-total
+ I/ S$ P1 V  X6 V;;
更新邻居节点的数目,在此进行! T1 {: x7 M% }6 h7 E" M
let i 31 s) u5 ~5 u2 F" s* ?' o/ T
let sum-time 0
4 @! B9 y, W% E# q& d. J5 P2 Zwhile[i < [trade-record-one-len] of myself]
5 A% u  _8 ?2 [  q  J  ~6 a[
# v: j$ Z( t1 ^# qset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )2 k. d' o* j7 F) {
set i2 F3 q' G+ w4 N+ h% Q6 H
( i + 1)
5 t' m) b% [* Q9 ?& v# f
]  Z) U8 x; n. d
let j 3
: ~: f4 k1 B, C9 ?8 j5 klet sum-money 0
8 I( L6 s1 y  K+ b7 O# Mwhile[j < [trade-record-one-len] of myself]& {4 P( v' Q  h' d% F
[& f# O+ B# u$ n* }+ C$ M
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)' X* W. ?" J; q
set j4 q" l( Q0 I5 l: D* Q  f# Y
( j + 1)

& m& Z: U9 o5 d! P. R]
/ ~7 T7 Z2 Z9 B! h+ L+ N! R; ^let k 3. i9 x: \, L& y
let power 0
1 s) a. w% h2 T" ilet local 05 |1 C0 Z7 k8 E( X: Y3 Y
while [k <[trade-record-one-len] of myself]
4 ?1 A9 P9 \' n; y. s0 X0 L9 z[
/ J1 M; r  g8 z1 E( H9 o' V' Fset 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) 8 m7 s& U5 n( c) A* u
set k (k + 1)
$ K/ w" w1 i* W9 H- d+ J' U9 e2 y]
' j+ x2 n$ d- h" J3 kset [local-reputation] of myself (local)
% L% A# v$ i( `1 V, P* S# c  Aend1 d+ m: O, n3 c- ?9 ~+ @. h
4 `  m! w- V; ?; k& z# |
to update-neighbor-total! G: L% V: B( C7 F2 O/ p' }: m# Q
  L. a% K$ D3 h. n2 L( e. W
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]- B; |5 p) ^' k! `0 e

  b1 Z$ l( G9 _8 n% ?1 w3 H

# H; X" p4 {* G: d# l; p& _: Iend. |) F) S0 ~/ ^  y, G/ |# P1 u) P
, t: x$ {) R& w: d
to update-credibility-ijl
$ k8 \3 N) i$ `3 U2 x4 o+ b7 R, N( N/ w: l, {' v: 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。
( G& L. Q3 u) h2 T, E' ulet l 0
2 h- a  T4 [* l  M4 |while[ l < people ]
+ J1 S2 E* o& o" h;;
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1 M7 J7 d1 K. Y+ q) ~$ ?5 @
[1 v, l( z4 z2 h; p0 @/ `1 Q9 v
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
9 g0 P4 k! r) x! Gif (trade-record-one-j-l-len > 3)
# ^. O) n: L2 Z" W7 s[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; _9 n) T0 c* C- w
let i 34 q& i" F; @  E, U' I
let sum-time 0
& Q$ S& t9 l) Y) Qwhile[i < trade-record-one-len]' {8 _! x7 ~- ]; L. }5 z! Y4 A" p
[1 ?% h; c) `* j
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
0 M7 f' ]1 P. Eset i# y' X! y, Z! G
( i + 1)

7 M- [; [/ N9 u" Q$ E1 {]
/ l7 p- y, R* r7 A1 y' O) d: G0 \let credibility-i-j-l 0
( Z8 }  ~- |0 H" r  j;;i
评价(jjl的评价)
( L9 x$ i: L# C+ Elet j 3/ g0 W1 V/ j* M" [3 D
let k 4
$ |7 G/ k: @* Gwhile[j < trade-record-one-len]% p( {& |$ K1 r- n' s# N2 R
[1 D0 j# Z3 {+ b% Z" _
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% j: E/ j8 F2 H0 M% U  e' h+ w" }
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)
2 O" v" D1 j2 t8 Aset j( n2 I7 h  q8 u, r6 W- k
( j + 1)
# K7 r9 _' `% u8 ]
]4 t0 q6 p4 W+ N; u- C8 ~4 {
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 ))$ K, F) v. t5 K; ~
7 ~" k3 ]4 }5 t

( p" e6 t+ T! Q2 B0 r( U( |/ Elet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
8 R3 i, m2 d& s. {;;
及时更新il的评价质量的评价
+ ~$ P3 p* e7 n$ L7 j( M6 ^set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
( K# e$ C0 g. P$ q, t: g% F8 Uset l (l + 1)
, a1 H2 n, a% ~: G4 T]
6 w9 k1 O% x) X; K0 Uend+ I8 D1 I* l1 `
1 e+ Z6 N2 S; ?# I& N0 U( v
to update-credibility-list
0 x' V3 z. T4 p7 Plet i 05 \0 }' \% O% A0 ~9 E3 W' z3 x
while[i < people]
8 @, P( N& |4 V. X6 ^; [" ~[
; w- P7 y0 E2 N% h. f  W) nlet j 0
; a0 {: o; k. k& _; u  f8 Slet note 08 T) G" |- Z0 u* a- r9 }/ t5 S- G
let k 0+ i' Y4 O/ t& Z) t- D
;;
计作出过评价的邻居节点的数目
: |5 A2 e7 D+ }% fwhile[j < people]
! |, B  u% Z- j! v* `: i+ v+ C[* x! Z/ W" y4 a! K3 X4 V* F
if (item j( [credibility] of turtle (i + 1)) != -1)0 |- J& x- x) b* v! [- S' ]% ?! j
;;
判断是否给本turtle的评价质量做出过评价的节点
  S8 u" t& N; T7 Y( f) L7 S/ w[set note (note + item j ([credibility]of turtle (i + 1)))! {# M2 b8 w. L# x; X
;;*(exp (-(people - 2)))/(people - 2))]
) S+ c7 C# c+ x& v
set k (k + 1)
  k. U* H  ]8 m3 k' J]
/ P* s! ?5 H  U1 |4 Q: Zset j (j + 1)) \3 Z& K% l. {* e" Z+ C: v
]
8 |" a3 o: X8 i0 D8 m' d, Yset note (note *(exp (- (1 / k)))/ k)' b9 R  D3 P. O, B, N) B; H* p
set credibility-list (replace-item i credibility-list note)- \5 x4 k* o0 U4 _
set i (i + 1)( g5 l* r3 z; g' z' O- |
]
( L, b: \/ |2 _- r  r6 o8 uend& {( m! @" O& |3 B  T* o
7 N8 D' V0 j; N' P4 h
to update-global-reputation-list
0 p8 z' k, ?. B9 }let j 0: O( j& J' Z# o& ?. P6 {* o
while[j < people]
$ @/ R- u8 Z. _3 _, F! J) j[
6 K& x5 _& V5 w; `" plet new 0- \  {6 c/ |5 a( c
;;
暂存新的一个全局声誉. w2 c& U9 s1 J6 X+ J
let i 0
7 Q) \) ~- Q- i, ~" w9 D3 c0 _" `let sum-money 0
( z$ c% m& Z- E0 r, i* j. e# M' wlet credibility-money 0
+ V1 P  Z& Y% Rwhile [i < people]% ]2 j7 ^- D) m& t/ T% ^
[, f4 _- \0 @7 o& X
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))% k/ r# z# T+ O% s
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))6 E! q2 Q  Z* ?* B
set i (i + 1)- _/ F' m" F$ v, z
]
5 y0 K: r. R: U0 ?0 V  O9 Z# _let k 09 E6 o5 [; |" Q" z7 w0 {
let new1 0/ v. J- a% s# ?: s* H6 d4 T' [
while [k < people]
) e+ @5 h4 \  P* D: |( A) e[5 g- Y( t+ {+ U+ i0 k
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)7 m: c2 t0 x3 }! w& |0 ^
set k (k + 1)+ h1 c5 `" d* F  Q# n( ~" P  m8 u1 A
]
" b( u9 `$ j3 y) G3 bset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
8 X0 m5 L# Q* `" j0 }; ~1 sset global-reputation-list (replace-item j global-reputation-list new)3 `6 {2 U1 c4 m; j
set j (j + 1)
) F' r. e, P0 P# L4 ?- G* n]7 ^3 @9 q/ i3 `  |% ?7 J/ t
end' W0 `$ s5 V  M+ ~
* W: m1 `1 ^) Q  ?! }5 v/ a5 m

$ o7 i) r5 C( Q8 l+ j) a5 d1 w' C& I# L5 h& m
to get-color. {  ]# O$ b7 X1 a. H

+ L/ `  e( C4 r+ ~set color blue
1 \; B2 }+ b) d9 x
end
  H- i) ]0 `& P7 K- L# M/ w. S* x; [! l& y
to poll-class5 L6 f; L/ T# R+ T
end1 e  R$ y  \, |  o3 u2 P9 P
! }1 H8 J& ]( s" B' H
to setup-plot1
6 E" m9 s8 O& T- l8 J( P. o- m4 o( g4 }( @  \" E  T. l% \  C4 B
set-current-plot "Trends-of-Local-reputation"
7 b* d/ S9 }' _; q! Z8 e' y
" z, C3 O+ a  P2 a4 u) r7 _, E8 W
set-plot-x-range 0 xmax

' a+ O- @0 D. g# D1 Y, K7 D; I5 |; K# E
set-plot-y-range 0.0 ymax

" H! y, s) K* E! R# [0 U0 nend
; k6 ?/ h1 ~7 y) S  }/ w% A8 b+ M; y' l2 s) `  H1 w+ p
to setup-plot2
/ b7 o; y1 T% J3 Y& Z! Q0 t6 z" i; }: h8 t- e" I2 c1 h2 X8 W( K
set-current-plot "Trends-of-global-reputation"

8 S$ A& e5 h2 h7 m& Z4 z8 z
; [' X6 M6 J  \) X1 i; U" w4 g9 Vset-plot-x-range 0 xmax
* a2 K% X) b: H3 T/ L
6 d$ j6 X& W) |+ b' A0 P
set-plot-y-range 0.0 ymax

% {: Q/ f$ X& N4 r7 \5 Hend+ T6 x- S# z  F
* m# F& ]' c1 z) [# V; D' {# }
to setup-plot3
! C& R# D% p: l1 B, P
' M* E4 _* M$ p' C& \" S" hset-current-plot "Trends-of-credibility"

' ]( [) E+ I* k
% [! i/ N! g6 ], Y8 Y+ Jset-plot-x-range 0 xmax

. p& Y  d+ F. J' s% p
' V7 j, V; r8 ]set-plot-y-range 0.0 ymax

$ Q. ?+ y# ~& x$ Jend$ X, c8 j7 k: G
) E7 c" _! a3 Q2 }4 d2 a: p
to do-plots
4 I3 B! T( R) P; F) M  g4 iset-current-plot "Trends-of-Local-reputation"  z- ?; l3 P: C8 e" b
set-current-plot-pen "Honest service"
/ f0 V5 h2 u: P8 b. Z* f' ]. i) Eend
, O3 z% \" c. @1 O) ~9 ^! d2 [* [8 A
% R' Q+ c2 z( G; S[ 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.' J# F; ~( x3 G3 ~; P

, a) G! \1 k! E; j7 \7 A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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