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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:
$ h  I8 P4 \: S; Tto do-business + o) |3 Q; m! b0 H; \  ]0 g
rt random 360
* Z+ T! t3 w# ~% W fd 1
, G0 ^: p  W2 D6 T2 @5 g ifelse(other turtles-here != nobody)[
5 p( H6 Q* k' H2 `   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 Q7 U0 v4 L( ?1 u2 w   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
+ }5 d  T  ^/ [   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer, b0 O4 m! I: h" c8 O& o7 ]( A6 ^
   set [trade-record-one-len] of self length [trade-record-one] of self
9 Q, K7 Z8 Z! z7 n8 {! Q   set trade-record-current( list (timer) (random money-upper-limit))
0 B# Q. G' P( @' B$ I2 N2 _1 g' K7 H+ u  E" C; d  I; [' j, d! I8 n
问题的提示如下:
1 s4 z0 j' {; \! ^
7 m/ _: |$ I2 a! r" J4 qerror while turtle 50 running OF in procedure DO-BUSINESS9 Z" o1 P: d( b
  called by procedure GO
/ I2 D. j/ ^! U2 P" `& N0 B" {OF expected input to be a turtle agentset or turtle but got NOBODY instead.- ^2 M; y8 f  e$ x. Y" G6 |
(halted running of go). I4 y/ l% v- Q4 [5 H: y

6 ~( P% R. H4 K% r: {; ?5 V( A3 f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 B$ e7 R0 o& Z# i* W$ `) `+ H
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5 j. m" @1 K' R' E- \/ c
globals[
5 x2 z2 j" N: g# G5 y! T0 oxmax/ k2 S. m) A( M( h! v' W. l
ymax
8 t7 ^( A- B+ _8 q, U; Q2 x6 W: Nglobal-reputation-list
  a* [8 e3 j! I9 B& g8 I
5 w$ J% O. O( J2 o6 Q;;
每一个turtle的全局声誉都存在此LIST
  j' R  ]6 x$ `9 h. u7 w: Mcredibility-list
( f' f# U: C; k% Z9 ^;;
每一个turtle的评价可信度
% q& M9 b* I, z2 a7 \6 {honest-service% d$ v7 k; R0 J8 o5 e2 I
unhonest-service
" g4 @  k/ F! V. |& C9 foscillation
2 K- Z: n3 y1 H  i$ A2 Z* Urand-dynamic
0 G9 p2 t. J- ]* j* Q% K]! B, }: M7 ]4 x
( O. d1 t; z" [6 N& {
turtles-own[
" y9 F6 T) f/ Q( Ltrade-record-all
' H' J" k7 }" g- Y$ {+ O; K;;a list of lists,
trade-record-one组成
& U  O" I7 {- S  Y1 t, i6 Dtrade-record-one- ^! L8 A: G' w( n- ^( c) d
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录" \9 a- C8 o( O0 ?( P0 A

$ }1 u" v; Y) K; ^7 a, T' g$ t;;[
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]]$ ~3 H- Q2 _( {. R
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]
. ~; q$ B' ^+ f( D' z( rcredibility-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) z$ q4 L% [) H! a( H0 @
neighbor-total% I$ M2 ~2 P& e9 R
;;
记录该turtle的邻居节点的数目" [4 t; h) A0 i. f& @' t$ p
trade-time6 P7 S3 h3 S" \: C1 }
;;
当前发生交易的turtle的交易时间* ^, c% d- Z7 C
appraise-give
3 {( a8 z2 x: i# M1 k! q- S;;
当前发生交易时给出的评价/ E% ~6 W2 |& n5 z. {( U5 _
appraise-receive
2 [3 i: B* b/ N* o- R/ q3 c;;
当前发生交易时收到的评价
; B# `6 e1 f5 U$ Kappraise-time
. ]1 f6 \1 C8 o7 X7 ^4 r8 K;;
当前发生交易时的评价时间" e/ T- \- q8 E! D; V/ p3 y* X4 C
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
6 Y* X" G8 c( V  g4 j- ]trade-times-total
5 x% F2 {, w% {9 C7 a8 X;;
与当前turtle的交易总次数! j; q0 O* o( W$ X6 L
trade-money-total! R2 }! e2 T* b7 B' Z$ `
;;
与当前turtle的交易总金额5 S# [7 {2 {6 ^) n9 d9 o, Y
local-reputation/ m% }! o9 \0 ~/ t6 ^$ T( Q8 q, Y
global-reputation! _2 f8 q$ Z* ~8 ]+ U: d) W
credibility
& Z- W, c4 p1 Y;;
评价可信度,每次交易后都需要更新* h6 S1 H$ H4 S4 C& F
credibility-all
) K# e5 E; `8 Q$ J0 t# F;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据
; c0 b! H: x9 T# R. }# ^$ b
2 Y9 z+ K1 s1 t1 R/ R6 o% g& O;;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
: Z5 E* ~1 x$ [credibility-one
$ K! z4 E9 o* b0 {( o; e- G;;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people4 T& ~3 {0 O/ N1 B6 V& `3 l; a
global-proportion: n  E, R# g6 z' }; Y1 y" U
customer7 v  |/ {. x9 U' P* u9 |
customer-no8 S' a8 W6 Q; s( k5 p0 l
trust-ok1 I0 m% o. g! w, w5 Y$ ^
trade-record-one-len;;trade-record-one的长度# z: k  q4 {/ a/ @5 e2 H( e2 ^
]2 J2 \4 D' x; k6 z6 Y: g. Z
4 @1 @  F& O$ @: b$ t" R% q
;;setup procedure
& Q8 ^0 U/ `* s$ @$ P+ C/ O+ Q/ m
to setup
1 m+ b9 c8 z6 _% Z2 t. d
6 |( ^( A5 X3 c9 }) Nca
; P' I2 m4 l3 l, K7 P5 I

5 f1 u1 b1 E$ V) ainitialize-settings
! H+ [9 @0 @4 J! O6 c

+ R% V) t8 {: U- ^crt people [setup-turtles]

& K# |5 }( L0 W" m3 K5 m7 }$ Z# W. x/ s
reset-timer
' N) ?) H  U  r, [3 I# m
- o8 c! [  R, ?+ G# b
poll-class

' h/ ~4 E! C7 O0 I3 F' ^9 ]; T% n! [4 p# q& i
setup-plots

, R# U# y) m) D0 O( ?' m/ W( n3 K- y4 e% w; p& ?
do-plots

5 r! a3 K5 r2 N4 v1 o& Jend
4 L1 V( h* Z& h; z( o' W  h, @8 ^7 y2 `  Y
to initialize-settings8 s5 G% p+ v6 X' d9 x7 I

0 G+ h8 V& M6 Q& p% ^! |* v! V) tset global-reputation-list []
/ u. G6 c  I' ~! N( C2 l8 E+ }
7 j" I: p1 s# U
set credibility-list n-values people [0.5]

: y0 a1 f  Z2 E# _: }: D9 G0 W) Y5 u- p* d) G( i: c
set honest-service 0
3 N- T3 j# y) C8 c# p$ B6 W

) I1 U* C( C4 P0 M2 mset unhonest-service 0
& J2 {! M7 l. l

; i& S* ~& J8 T$ F+ P* _1 Oset oscillation 0

4 {) k$ X' m* q& }
/ U3 _: M: F- O+ u1 vset rand-dynamic 0

( ^. H3 _* C& T' K, Bend- O) G, [% b  {# x( p; e

- g: q, z, b7 J2 Z' `to setup-turtles 7 C% l% t5 {8 x4 _/ ]- f
set shape "person"6 ~# U! d4 p$ ~9 C+ O$ y. W
setxy random-xcor random-ycor
  `0 G5 U4 j( K+ `set trade-record-one []  A! J4 ^' f  v; V7 a: x  |6 H

/ B  b. i" _4 F5 T/ A2 Kset trade-record-all n-values people [(list (? + 1) 0 0)] ' P3 M) a" w. O- V

. e. ^8 x2 I* \% F( A" dset trade-record-current []
0 k, Z' u  K# Q9 e! Zset credibility-receive []9 G1 j" r: y7 l: `% c
set local-reputation 0.5
" y9 L9 `! E$ Uset neighbor-total 0
' R- Z7 k( e# i7 Y% Cset trade-times-total 08 U4 I9 H# G" V4 o: z, S& O
set trade-money-total 0/ X4 {" d5 N  k3 O7 a& ^
set customer nobody
+ J% l. W+ X8 B0 Qset credibility-all n-values people [creat-credibility]
, J1 z. k! O( p6 e2 Oset credibility n-values people [-1]
% x! S: P, q0 L2 Eget-color8 ?0 H# n( q/ x' p$ T' {
3 D& G1 ~/ n! \
end5 F! ]4 |9 f7 D! ]( y
& N9 _: J3 o: {0 z
to-report creat-credibility
! a& w& E; z, q% z6 h* Kreport n-values people [0.5]
! k7 M- P+ \' g( D: q/ Kend
) e6 Z" ]1 N5 G# {# ^6 P, c" @/ T& \8 O3 q9 M# Q
to setup-plots
" i- u3 K' t) s" M6 D4 u1 J: n) a$ N  ]7 P- Q+ {# ^, [. U( m% m
set xmax 30

% ]6 |8 M0 C( }7 }+ q: J4 \/ x* T1 d4 S/ F& K6 X5 P
set ymax 1.0

- I% Q: ?1 s/ d% x* K7 q$ F; a' J# {! m! B. T8 F1 {! Y
clear-all-plots

  D$ V1 q$ g! _: G4 j2 Q4 x  M& G/ h
setup-plot1

& d) r: [, ~: M
3 V% }+ s! |# Msetup-plot2

3 k# J& \, \( A/ }8 g* |
9 o% U( n( d1 c5 ^setup-plot3
! g2 c, p  P! I" C8 {) N
end: Y1 x( I- ^1 o3 V5 S5 j6 v
/ P/ p9 I6 ~8 Z7 r
;;run time procedures
, n" N$ n% Y! w0 E4 s
8 T/ n" }6 |. vto go
( u4 Q4 ]5 [  u5 s+ z0 b  I4 H4 M2 ~; E6 |3 c+ D+ }
ask turtles [do-business]
% c+ _9 {+ U/ z# _% w
end
- W9 [" x3 X; `4 F
9 r8 N: Y# u& p$ Kto do-business 8 ]) [6 i4 g# w/ o* |' `4 y9 ]8 k8 d

' k& P( |2 c- F. Q3 o# U
6 W4 g' b' {- O5 J7 x/ a' yrt random 360
& m3 `0 A; i+ L7 f

% I' p( w5 I( ifd 1
& w1 I  s2 \2 U

( U* m# }3 y( g: O7 g8 gifelse(other turtles-here != nobody)[

+ N2 K4 q) ~: C, {4 q% z) X6 X6 S
set customer one-of other turtles-here
; E1 n/ `5 z0 W0 [/ B7 Z

8 Y3 C9 w' w; a+ R' r;; set [customer] of customer myself
* }7 y6 z0 V0 v* y  ^% [

# H: [) `7 s9 C, X' B6 iset [trade-record-one] of self item (([who] of customer) - 1)& o! s* u1 ]; T% o" h
[trade-record-all]of self
4 m( D& x* w: ]6 n4 J;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
3 w/ y9 R2 p7 ~: j
( c& a7 t. E; v+ o- g1 Z8 i
set [trade-record-one] of customer item (([who] of self) - 1)
6 m! J/ q) V5 ]6 d[trade-record-all]of customer

! l% g$ N: V. o+ d0 ~+ @- c' S/ L- Q8 s- P0 {
set [trade-record-one-len] of self length [trade-record-one] of self
: p6 P2 z1 g; M: Q# D2 m( g, f

. O' B( J2 w+ O3 Dset trade-record-current( list (timer) (random money-upper-limit))
: T- J  Y" ?4 w& H

( V/ T, b3 ~( K' Oask self [do-trust]! x; Q7 ^! _) c. p3 ^
;;
先求ij的信任度/ z5 V# ~  F! N* Z- c

7 @9 I* W$ s/ ]$ Kif ([trust-ok] of self)
% o8 \. S8 P" U) V;;
根据ij的信任度来决定是否与j进行交易[
6 s, b; B9 T! Z  ~ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
% {3 U0 T5 G: b1 w8 t8 `" {: W/ O7 t$ I. |" ~& F
[

% U( ?' q! q3 |; |/ P: g4 u
% |. B# X" j( O6 J7 i2 C6 e3 }% wdo-trade
  W: [) d! j" i. D% X% a0 F

0 {: k' S# j+ c) Aupdate-credibility-ijl
: z2 M1 y$ Q' Q7 C- \5 `

7 r2 J" G4 w! Y8 Vupdate-credibility-list5 O9 {$ |* A2 c# m  \( S
; q$ Q# I$ n) F: B& P- l. ~  L

# k& J, B) E5 v* j9 m2 P; `4 lupdate-global-reputation-list
4 ~, G; a' L1 w
% y1 v8 B( a% j; d0 L2 ^1 N0 [
poll-class
  c2 G2 l5 k" G/ J+ y8 k' v

" f& h$ I& [9 n' s3 T( Bget-color
( s$ \$ w0 k, v# L7 h3 ?

+ D* n( x! X. y! I. l; f, h]]' N- ~" A/ V' }
# v& I2 F; ]$ R- K( l# }/ h
;;
如果所得的信任度满足条件,则进行交易: P0 f3 w* i; E* R9 b  m
' ~. |# t. U6 j; z; b# [
[

! K9 r9 s- g) v$ R- t# Y" z
1 X1 Z8 K6 h) j4 f, k8 }rt random 360
. [7 A" U; {) G+ q- n

  n7 o. p  ~8 H* xfd 1

% O  E6 n+ q& \
4 x5 x( h. H6 R0 s) Z' t]
- R$ ^) R0 Z% |: b3 |8 V8 r

: T. F6 }- ?% Fend
6 W" V7 j- q* J% T

- m/ Q# N( H: z- G, f* V9 y. i  l, rto do-trust ( t4 f3 F$ d. \( h3 [( o/ B
set trust-ok False5 A. `; X+ }1 H' z8 U+ K' h1 b

2 v* E6 B1 A$ n  i3 Q

7 V# ]7 }* w; A( U  q  glet max-trade-times 0& e: F7 a: \! ~3 ]
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]8 q, X) w" y# G' }4 O
let max-trade-money 0) E+ n7 K4 O: e. q& N% k0 `
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
1 n+ `% Q2 _0 `3 b0 y5 I) }$ zlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
  Y2 ~" c+ A9 i; Q, }7 `
2 Q- H& s0 C* M1 z
8 y& }/ J# Q' ~0 _% [- }" f" ?
get-global-proportion, E9 [7 m) Z8 |5 r7 H
let trust-value- I, G% E9 M0 N6 y- x/ o
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)

$ I- O; O- Z% A) m  Rif(trust-value > trade-trust-value)
# H7 q: o- \; S% ~0 M% @7 k# U[set trust-ok true]
" J/ \  K  _, ^8 n6 Lend8 E  G& Q8 f2 z
: O* N1 t0 J# `7 u5 q8 p% U/ g
to get-global-proportion) a) F* M4 l2 \' H8 H% ~
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
0 H" o# L8 T& V7 A9 {1 [[set global-proportion 0]3 A* y. ~3 j& S' J+ H, A$ z
[let i 0
! z  i7 ?; o4 i4 W4 m& e0 elet sum-money 0+ u7 ~5 A' F6 R
while[ i < people]1 C" _$ S' Y4 k/ R/ t& `
[
, r, O4 ]  z6 _& {if( length (item i
. `/ [, c6 R' q- t6 k! v5 T0 a: u: @[trade-record-all] of customer) > 3 )
9 y: ?( m1 ?( @/ R
[6 ], C* e' w& ~" P2 _0 l/ p* c* E
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))5 p' T/ V9 P1 \2 \8 }. \7 J, r
]3 C7 q5 O7 v4 G/ N! h9 Y
]
7 r: H' Z& L( z  @: W. Llet j 0
6 _! g* {0 O5 d, Q3 Y1 w- llet note 0
" u0 @+ k, J* {( Twhile[ j < people]! Z" W" @& h1 A% ?
[
3 F0 Y  c( Z1 J/ cif( length (item i2 C. I( F& G' k( l5 l8 T" f1 [- W
[trade-record-all] of customer) > 3 )
4 r: `' W( M; _6 B$ V, a# V. o
[2 w- S: [  C) ]' u! J' K
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)- y( r2 A9 S2 |2 o" S5 g7 Z
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
  N' ]% g5 ^# P) Q* X6 `[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]9 }5 Q0 t( |( c- a$ R% Y
]
# _3 s# W; i/ z* l/ A! S% H]% y, w( _  |( |2 K" L3 `
set global-proportion note/ c6 N0 A* [" ]6 J5 K- k; }
], M* K4 e! j# n& ^3 |9 ~/ d
end
  q% `+ U3 \' |9 Z# L7 }3 p7 r; Y1 a8 I' f4 t" _0 M% C
to do-trade
4 c3 Z7 U# W5 u5 w/ P; n& H3 c- z;;
这个过程实际上是给双方作出评价的过程
3 U9 ^4 B1 b% \# j& @6 vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
$ A7 |" g! H- n. ]% fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
2 _2 B7 R5 l- Z9 d, Q6 {set trade-record-current lput(timer) trade-record-current
, b, Q4 |) S2 b. F% h9 W, j4 B;;
评价时间
  e: E9 ~0 {# Y( K8 j6 uask myself [
: F! s/ [2 r, L$ w6 k% G* Mupdate-local-reputation
) U' E# e* Y8 J4 z% ?set trade-record-current lput([local-reputation] of myself) trade-record-current
. L/ x+ t8 a/ ]" t0 a" a. _]
5 r% g5 [) O: r3 N+ }9 c- jset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
' y: j$ x& D# y2 t( g0 W;;
将此次交易的记录加入到trade-record-one* ~. o3 f8 _) R1 N( u
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
; W! I4 c7 W9 @let note (item 2 trade-record-current )5 U4 n: q' w9 l6 u& f7 p
set trade-record-current
/ U, {6 s# c5 Z$ }(replace-item 2 trade-record-current (item 3 trade-record-current))

& d( B( }) Q, Y. o% oset trade-record-current* J; E0 S5 {* M- d) X
(replace-item 3 trade-record-current note)
. d" i% d" @* d2 y  ]9 ~* A: e- v1 |

* G! q/ H: e' t( X3 Z3 ^ask customer [
& N; u* M* e2 b* R: }* jupdate-local-reputation; e: P- l. y2 ?$ c  T1 b, b
set trade-record-current
- W. N% B- B5 p8 u; U) m& a& u6 j(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
3 w0 y9 b+ g9 S/ t
]8 {5 u* ?$ V" Y# {0 i% z. ?

, x' p6 x8 m+ U% D9 T; j

: o8 T( @  Z! A# n+ zset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer" q) @: \- O0 t1 [( ?; l$ p0 `

/ L  ~5 D9 `5 W/ D# \* E" pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
, [1 q$ }# \* @. M1 A& z0 p( R1 m;;
将此次交易的记录加入到customertrade-record-all
4 p) k6 j$ z+ I$ t$ `5 zend( z7 j1 t# i3 I' y* e/ e

/ w5 y( F6 S- @# M& `( gto update-local-reputation
' `( U( X4 T/ A8 b1 [' {1 v$ m$ z6 fset [trade-record-one-len] of myself length [trade-record-one] of myself) \9 b/ r3 {4 E  e: v

0 d! ]( }0 X  O+ N# d4 I
4 m. ^! t3 C' I1 t;;if [trade-record-one-len] of myself > 3

5 o  T% H( ]! u  s" i/ I7 Rupdate-neighbor-total# V4 M0 i: p* Y' z
;;
更新邻居节点的数目,在此进行* @3 H0 s, r' @" Y! O) Y" \
let i 3
2 i- H( g' f9 v, u2 E) @* tlet sum-time 0( N  a9 {6 g7 J% K" C1 y6 d& u7 G- F
while[i < [trade-record-one-len] of myself]: k/ B& T" X1 W% e% `$ T! @
[, E/ r: p$ y9 |, Q# ^5 W
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
6 |8 J- |5 M, z1 b7 a8 F* p5 sset i
$ u# I& a  b9 u" E0 N& _5 a: r( i + 1)

6 n6 w1 D1 K6 _]
- e, }% Z2 a$ Y% vlet j 3! s$ @! d, {  r$ X4 p7 n0 N4 Q: m, ^
let sum-money 09 P& a1 d  i; L$ k: `% N1 j
while[j < [trade-record-one-len] of myself]) V( l" x3 C4 b- a2 ~
[
0 d$ O! p; ^, N5 r* q7 Fset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)+ e) d  v$ m1 O4 p3 }8 f
set j+ t* D( K$ E# J& U2 C
( j + 1)

0 e) n  e/ _+ ~6 k  U# r1 L) u7 r9 X; B' s]+ D4 y4 R4 K" s
let k 3
# Z/ S: J: O7 G4 J- M" Glet power 0
& G3 P2 }' Y& s/ ?let local 0
2 b- F; S5 i3 d% ]( @while [k <[trade-record-one-len] of myself]% {2 L$ ]* t: q: i# n
[& }. _; e( o; ?$ ?/ B2 w( P0 R
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)
2 o7 n7 U; E9 g" wset k (k + 1)& u6 L6 E3 s. f5 ?. }
]& @4 E2 \' _4 U& F) s
set [local-reputation] of myself (local); R$ n: t* ?: q: g
end4 X3 I1 S  c/ }2 f6 k7 ?
# S0 M' q3 f8 `) o! R
to update-neighbor-total5 c) Q3 n0 B4 {  W
1 V- h7 @1 ~1 |# X
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
$ k( N: n1 g  h; \8 Z1 d1 ~3 D
" f% y( {% D9 j

" h; r& g( O6 j# `, m5 x1 n* b% x' Qend
" `* Y8 s7 a  x- s
9 m9 N4 @. X6 P+ V2 d7 U! tto update-credibility-ijl ( m% _' I* c) J! M
  b5 e( Y+ v5 ~! w3 q, l0 g
;;
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% _/ l7 l0 ~$ ?! u6 k: l
let l 0# G; T# W0 P6 Q$ o4 H6 i& J! [
while[ l < people ]
; @& @/ O, C) {! B7 r7 a;;
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 L9 i/ ?7 V6 U6 U[
+ {8 }: z4 W* Xlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)) S  F4 U' X8 G; N& t/ N; W3 ]4 h
if (trade-record-one-j-l-len > 3)9 b* ?: s# x4 u! Q' [/ n
[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 [5 P8 d# h1 h$ Y' `' d1 E
let i 3$ ]9 i  C; B2 g" p& L: s
let sum-time 0
5 X% _8 c/ h8 kwhile[i < trade-record-one-len]
2 ?1 _7 S1 k$ K9 G  I[
& T  I3 w" O4 Y* _; L. T, hset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )- d# r4 x& P' E+ a  ^/ H
set i' a0 }; ~- T0 ?& m: f1 \
( i + 1)

/ j  n3 {# L1 I8 p. M4 k]. E5 ]& w$ [2 A8 i6 y. f
let credibility-i-j-l 00 a( N( t- G: }. O: |
;;i
评价(jjl的评价)" \. K2 J: z4 b" c7 j: P6 _
let j 3
& @5 }) P' B: O  E. x: h) H/ f* ilet k 4- J. i3 @4 T  z
while[j < trade-record-one-len]8 \" q! m0 E7 T' @; a% o. O2 S
[
& A/ W+ G" a  b" h. j- Awhile [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉' R1 v. [  s7 ~
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)
  R7 G( E: p0 }0 fset j; q2 @! j0 i  Z/ ?1 q
( j + 1)

, f3 a: ?: I0 Y. Y8 @]
( v& P( z0 ?" _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 ))& l+ C  u# d; e1 i2 @5 K9 u% G2 `9 w; m

3 u9 d/ o2 J7 l# v5 V& u0 [, ?
  L/ F* M8 Z* Z
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))7 O) P* y; Y) x; O) s$ ?1 {; ^0 Z& W
;;
及时更新il的评价质量的评价
0 N9 _" ^; d( V8 F5 Rset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
7 O3 c, K  L5 b' z$ h6 y7 O, f( B7 ~set l (l + 1)
/ \1 f+ O. U( G; h* R]
6 _- c$ N* c' R# u  c- qend' {! ~* @# K% q' N! y( v. m- k2 `" p

5 L7 l1 g8 g, Y* Eto update-credibility-list
$ L$ f" ^; `5 s% ?# W0 @' ^" P: e% xlet i 0
; u( g$ _" s& Q3 [/ {3 G0 s2 U/ Mwhile[i < people]$ y# m, B+ c4 Z) A6 ?
[
( C3 ^6 R- ~6 J8 vlet j 0
, {4 Q) N9 G7 k. j8 ulet note 0  r  L) }- n7 C/ T% l
let k 0
1 {+ C; R' P0 S;;
计作出过评价的邻居节点的数目
* ?& v# k6 _% Z. Twhile[j < people]
4 s- p: T& d+ H# B( G[
( O5 S9 n& |$ z- c+ |if (item j( [credibility] of turtle (i + 1)) != -1)0 j2 k& L) V; ^* ~- E7 w+ {
;;
判断是否给本turtle的评价质量做出过评价的节点# _. P2 H' ?5 _5 X* @8 _
[set note (note + item j ([credibility]of turtle (i + 1)))
* ]) A2 G/ o) ?# s) N;;*(exp (-(people - 2)))/(people - 2))]

" o" l3 N$ Y: Z; p/ n: F6 jset k (k + 1). f' l* Y- |* `% u* B: L* w
]$ B/ l1 }+ P, T! V& M/ u8 v( T
set j (j + 1)
$ b6 M+ A2 w3 q. t8 A9 I]) c% l$ d" R- e- q
set note (note *(exp (- (1 / k)))/ k)
; A) g. t3 [, ]8 S6 Lset credibility-list (replace-item i credibility-list note)$ \, s/ M6 f5 `5 D: g+ t) _
set i (i + 1)( B5 |6 r; s/ l; g% h2 |% I
]
" D- ~$ X4 ]) j$ |6 h( mend
, w7 w" u# P& v0 O. R$ l7 `* `, Y" r2 }2 h: P+ O1 M
to update-global-reputation-list
, g! q4 T' B: g5 Llet j 0
# p' ~1 i: s1 j$ t0 t. mwhile[j < people]
0 W' U% [( p& K7 F0 |[" w  J9 N& E& F+ u- }- y
let new 0: @2 `- M1 j2 K* V& G4 q! M
;;
暂存新的一个全局声誉( B: a4 m- K0 T& w, m. N
let i 0
$ F# b1 ^; H& Zlet sum-money 0* L) W. t! ?3 @  N2 w% f
let credibility-money 0* }6 S4 x9 O& u- }$ h
while [i < people]' Y) _! n" \+ b1 Q1 j5 c: n
[
! k* O3 j8 F0 o9 N- H! ^, Kset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))): Y  T8 m! @7 d6 s& T; j% c. ~
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
7 q* p  w# x4 X5 Y1 Bset i (i + 1)% g$ z- {4 m( z0 }- r
]
2 @( h$ k/ x4 A7 ]* u8 Glet k 0
9 O. f8 g. Y4 blet new1 0' T, q5 c# ?; q- i: M' y0 T+ U
while [k < people]
  B; M6 ~" B2 r& M' r4 K[$ ~0 `7 b4 a) X. @; E" U: [
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)
% {! u& v: i3 ]! W+ g  l; Nset k (k + 1)7 q1 }5 u9 A" T7 o1 y
]
) h! C1 q7 A7 x0 m5 y$ Gset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
* y2 A9 Q# k& q. Q& S  Q9 h" [set global-reputation-list (replace-item j global-reputation-list new)& s+ ]% n6 B( Z1 A2 ~
set j (j + 1)
+ q: o4 I5 q- T8 l]0 n2 G: `1 [$ b8 I5 w/ T3 ?7 u2 X
end
8 s) o( {8 C# i) s7 O8 E8 M9 w$ E( B
; M9 h9 m/ A3 f! p9 R: K% r

0 n9 j, L! z4 h" m+ A( Mto get-color- g* M3 _1 Z( G* j- f* f& Z
% J1 v4 a7 D/ Q' J
set color blue
2 Z! I, ^& B# d7 {0 |
end2 e. W. \% v! X

5 A& o4 c0 [( F" T/ e  G# Tto poll-class6 _0 `( A3 E6 F8 c# J$ o
end
) _4 h, e$ ]! {: N& V" ~+ V) I! n0 G7 j; F. a
to setup-plot1% ~; Q  d1 Y( ]( V; c& U3 j
1 o& ]' K& |  w9 w1 o5 B
set-current-plot "Trends-of-Local-reputation"

& H2 p9 }; @' \" a9 c/ y2 u7 ^. v
2 O. Y1 a( C: V( Q9 s2 Qset-plot-x-range 0 xmax
9 m. h0 q+ q% X( x

- ]( ]! m8 T* w7 U8 d9 }2 eset-plot-y-range 0.0 ymax
( o4 C8 j2 {9 U+ q, A% s9 m) k
end
- X* @' t( l$ w7 C. j+ z' e7 [9 f& H' `  W, P2 b) @& w
to setup-plot2
+ R( T0 ]9 K/ v0 G" K8 W6 I
2 |) X5 E% b5 I/ z: |: uset-current-plot "Trends-of-global-reputation"

3 ^) ^7 o9 }! f: ]0 C/ @3 _; T2 f/ r# F1 T  r
set-plot-x-range 0 xmax
3 {7 S% e5 w2 a3 Z3 _8 q$ N0 \$ P2 Q

$ B5 Y9 R4 O* p# lset-plot-y-range 0.0 ymax

9 e  D& f3 Q- W- B) L4 mend
* {1 Z" Q) }4 I! x8 L9 v6 S) W& Z0 f. T
to setup-plot3" m; Y4 L3 i9 E

) F: v4 Y2 b6 @  X1 f4 iset-current-plot "Trends-of-credibility"
/ [' @" t0 r! i+ X$ B8 K% B* ~
$ f* D/ i' P" e1 B
set-plot-x-range 0 xmax
. y& R4 Y/ b8 J9 Z% A; b6 l
4 l9 {$ a9 t7 e2 U4 e# J+ x# M5 K
set-plot-y-range 0.0 ymax
$ W) n( w) j/ [& n* ]7 S
end
! [4 A4 v# N6 M% Q/ h2 n7 e5 q! X! A" W/ ~3 X5 r# e+ K
to do-plots
( T. I" ?( t& Q$ J3 R( tset-current-plot "Trends-of-Local-reputation"
  l3 ^% ~. z( g+ C7 aset-current-plot-pen "Honest service"
" O( z2 k, I6 t  Tend
+ t' {( M5 g$ m2 h7 e5 P" A. O9 k/ L$ [% V9 T% k) b
[ 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.) O' J( w7 Q8 [6 S7 j  x
! ?: B. g, T* d9 q+ M& k
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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