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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+ |# f; ]9 n5 z3 W/ i
to do-business + |- \( A# ?6 W3 a( e: ]9 `! z
rt random 360
# O0 c9 U' O9 A" A. p fd 1
5 X! ^0 ^" V6 _; @ ifelse(other turtles-here != nobody)[
" W2 m$ H& B: C4 z# C   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.
! J! K" E, _$ b1 a2 D% @5 ?+ S5 u( t   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    + b7 R" j- ^( I* w& \+ y4 y2 q
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
1 e2 y3 C' g8 i5 A0 v   set [trade-record-one-len] of self length [trade-record-one] of self
5 s  s, q* f' c3 L# M   set trade-record-current( list (timer) (random money-upper-limit))
- @0 f" s2 F. P( ]$ R, M0 d) |$ q, r
# {" N' y; `% m1 w4 i) G2 X问题的提示如下:3 S- @6 ?" c) b$ F
, K! `! D0 G" b2 k; m  z# P
error while turtle 50 running OF in procedure DO-BUSINESS  C6 K( j/ V2 N# `; z
  called by procedure GO
1 m, J3 y# p. f6 W4 E0 UOF expected input to be a turtle agentset or turtle but got NOBODY instead.
1 z7 r, H( d6 K0 p6 s
(halted running of go)4 N7 N& f" y2 A! x5 F; |9 y

; s1 n! M" E. I1 p; X# b+ P' [+ n1 D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~~
9 y) o. ~$ B0 |9 L$ N6 f9 Y: z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
* m' R2 A8 v. rglobals[
6 l( M8 k6 p" R2 M, Oxmax$ `! T2 Z6 R, U
ymax4 ~! K, ]+ f8 ?# s
global-reputation-list4 ^, Y% }& k$ j$ t0 d

: e# }! d: t, g5 @' C- R. D;;
每一个turtle的全局声誉都存在此LIST9 W: B- O, X+ c! L* U9 J
credibility-list
& }1 }; n3 Z$ h8 H2 E/ I;;
每一个turtle的评价可信度
, m8 Q. W# Q: S; y5 f! k& i( nhonest-service
. H3 @' @3 j4 J! q6 b, i) C7 [unhonest-service) v* P* S/ e) ~, w
oscillation
1 R9 O' P/ }' E7 E* [, Crand-dynamic' M2 u0 a2 o7 l3 {2 e% k
]
4 ~3 m0 v, ^) a6 g9 Y$ y0 f
3 M% w% z" q# p& O6 T% m7 _! Rturtles-own[7 P0 n7 l# U7 w) U
trade-record-all
( i8 v, N2 J4 C( g9 Y9 s;;a list of lists,
trade-record-one组成3 X9 ?6 Z% s% l
trade-record-one3 t! A, ^+ _3 Q( i. u
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
. c- F, Q% x" \/ U* u
5 F- r% N( q- o;;[
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]]
& E1 J" ]1 s+ ^3 {3 H( ]& w  wtrade-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]1 B. ~: L% L& o
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$ m( N3 {/ \; F6 s( ^9 v
neighbor-total3 @5 K8 n" W0 k! ]
;;
记录该turtle的邻居节点的数目
7 p2 ~* v2 v( z* `( ptrade-time
; F/ x2 `# I- e$ s$ c;;
当前发生交易的turtle的交易时间* I" _" z+ D$ d
appraise-give9 n9 b' I- [5 W& U' s" {) F
;;
当前发生交易时给出的评价; U/ ^/ Z% u' l3 i" }
appraise-receive
1 g( E$ c) y9 m) C1 G5 ?" m1 o;;
当前发生交易时收到的评价
; ]9 T2 q! q+ y) `" oappraise-time
0 `7 m. a$ `6 e( w) K;;
当前发生交易时的评价时间9 B1 S, u& N  G, R# g9 f
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
+ Y" D2 A0 z1 I& u3 ^2 Ntrade-times-total
3 L' _6 S! ^: E8 @4 f) j) D;;
与当前turtle的交易总次数0 Z' w+ Z$ k- k# n. ~2 V- F# M
trade-money-total
$ t" D9 {- F1 |+ a# F/ B;;
与当前turtle的交易总金额
. a- g! h* K. q# w9 Rlocal-reputation7 @8 j) n1 A/ q3 _
global-reputation! y0 X+ n$ T. v) E+ d8 y( {
credibility- ~2 s2 h& {& E3 y1 _" f  ^
;;
评价可信度,每次交易后都需要更新9 g3 Z' d* Z6 Y- l4 J8 X
credibility-all
; I6 r9 Z+ H/ T; L8 m: c) X;;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 E* _' @# Q* @8 @. X

+ H  H0 m4 t5 K, y- 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
: c6 F& t0 L! E! T! Kcredibility-one
% n$ a7 o) q+ Q( S+ `;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people* @( g' b" M( x$ N: U8 j7 |: ^
global-proportion; i  u+ S7 e1 S
customer0 E0 S" k7 b+ U3 I/ a+ \, `
customer-no
% `6 J* l4 p) t: u$ ~trust-ok
" c& l7 [3 [, n$ W: K4 |trade-record-one-len;;trade-record-one的长度
4 m" C, f8 _# ?4 a) Y3 Z9 l, p6 Y]
: k( C. j+ o& Z" S* y0 E, k2 Z  [
;;setup procedure
& d9 o! @0 v3 M" w' d7 c6 p
# k+ w. X0 \1 kto setup7 e9 Y- Q& i% X
5 y) \6 T* x- U
ca
% ^1 _- e) ]" }) b
; K8 \! t( ?0 s2 J) R
initialize-settings

5 g2 h% L" \& J1 I( b, D# ~; `' B
crt people [setup-turtles]
' q& ~4 Q# X1 p8 b3 v% s

  X9 b; [; P3 K4 B8 T/ Yreset-timer
: K+ Z$ X1 L/ {/ k
% M% h$ J6 o4 |/ \" k5 L
poll-class

. s& ~. X8 L# S% p0 B, R1 b1 D3 I/ d. _$ _. q3 A
setup-plots

5 a6 j9 N" s2 w* b# j- g
0 _) t% V; e! w- K& [' N0 z. odo-plots
. W( I9 k1 R  p+ N2 S+ X
end0 o, I4 _: W: N, b" \0 I- g

0 B9 ]7 y1 \/ \9 q1 j5 o- P5 u  wto initialize-settings
6 Y- d* B3 B& L2 j5 P7 p! Y$ c3 T+ l' R0 [7 h+ r# v/ E
set global-reputation-list []

. P8 @. J* h" M% Q/ T; `$ t6 \  G
set credibility-list n-values people [0.5]

) d, [; @" h+ K/ [. I+ K$ I& N. d8 U' D; e# x. Y
set honest-service 0
% o9 W' {3 r8 e. A$ Y4 t
! ]5 S1 V2 @) r8 l
set unhonest-service 0
, E5 G' J" A2 S$ M* c

+ @1 r" ?1 H+ B1 W& qset oscillation 0

8 j) l1 D6 c( Q; y  y6 @; f1 q1 a2 Y: M; T! Q
set rand-dynamic 0
/ j# v- u+ h* r3 w- A7 o
end
/ ]: |0 e6 l" H, w8 H
8 j+ P+ K- s+ v  uto setup-turtles 3 j; k8 d- B! E
set shape "person"- Q# v1 O; v. b  R
setxy random-xcor random-ycor4 V! c; Z( S0 _7 w5 X
set trade-record-one []& m0 U( Q. u2 e$ K1 E( S/ v
1 J2 o8 R' m0 @4 e9 m
set trade-record-all n-values people [(list (? + 1) 0 0)]
- w# S# ]! |+ g) S$ [% B  P: Z& q7 ^

& |6 v( |! Q, b0 A  A7 G. k" V# V1 Nset trade-record-current []
3 o; G) {2 \! K! u: Wset credibility-receive []2 r6 d9 C* ?+ I2 W  p
set local-reputation 0.5
7 H4 ?7 ^3 G- ^; J; V6 d; kset neighbor-total 0
+ ^  z( N7 j$ Jset trade-times-total 0
( H  h, J* H8 D- {set trade-money-total 0. N% \4 G9 l% Y4 }/ u6 V) ~6 q
set customer nobody! l: m7 _1 H) S' m# z
set credibility-all n-values people [creat-credibility]4 z! D8 N+ A2 C- ?* D$ r! h
set credibility n-values people [-1]
2 [/ q% @6 A4 N! H+ N3 E8 n8 T6 O: Hget-color
+ U- }  Q6 Z. Q
& g% _5 z. M) z, @3 d8 @
end
$ O% [1 J; _5 D/ C" r* s
  B$ ?# m# r) {* gto-report creat-credibility
  {, b* H; D2 Ereport n-values people [0.5]3 X7 C+ F8 M. y& a0 a* `; v
end
0 v* o8 b7 Y# X# t: Y5 D+ s" k+ S& G) _" _; q0 K4 I
to setup-plots
5 b3 Y1 d: n. x# a, m: f( i& @7 O! ~# Q% C5 C6 P# d% w
set xmax 30

, T$ i$ ]# d, _2 X2 ?) L. j5 W: N0 G. Q# [8 r
set ymax 1.0

9 H9 _$ @& _, o% P0 A
/ t, A6 u' }- r. _( J; C. aclear-all-plots

* _. |4 Y- e  J. [, n1 g: O. H0 A- v# V; O% V* c1 u3 L4 {
setup-plot1
# H$ G4 I& L% p) A6 s

% U1 c& [% g5 M/ |* D0 usetup-plot2
5 y* ^# B' R1 z4 x4 m6 T
/ L# R, @5 {9 W
setup-plot3

9 m# q. Q7 n4 ^8 [" P* B1 y7 o$ Aend
- ~& x8 A2 j2 h- q4 [+ N4 M! Q1 g; q  Z" g! r8 _& X
;;run time procedures
# V6 b: Q  Y) W/ m8 e1 f3 ]* U% [8 y! v- D3 E6 o
to go% Z# _5 j6 S# r, a8 l+ |
2 d+ C* \1 W+ ^% y
ask turtles [do-business]

- I. ~% U$ x) p' {" ^( Jend
% |1 X& a+ X. F  r% w6 C6 q  U" O9 A/ c5 z* M0 Y
to do-business
' W$ P1 ?: p  t# l1 ?, G' }

/ s' f/ D2 K0 d8 O: {% G
" ^' F  P  b. M9 r+ K: c& X! k& ?7 Zrt random 360

) E; F. D# Z+ M% J& X2 G  X5 m8 u3 c* u& @( Y* O# ~- F
fd 1
" r$ V) U7 f) p* Y! b- g* e
; V$ G# i& j' O# P; I, F* F# ]
ifelse(other turtles-here != nobody)[

( W; |8 v7 n8 m% F0 u7 U+ s5 m( L% J
set customer one-of other turtles-here
* K; i! q0 ~- K' {# y- K$ M
  y+ d# C! ^4 ]2 y
;; set [customer] of customer myself
- r0 v/ _1 B6 Q# I

1 q2 P  o2 K8 c6 M( n1 e: q$ n. T; |set [trade-record-one] of self item (([who] of customer) - 1): D' _$ E: q) l* N& ~
[trade-record-all]of self; M5 F4 ^# |  a
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

* |4 \2 ^8 S% K! U/ q: Q
2 K# L( W0 q/ h: K/ p+ h7 Mset [trade-record-one] of customer item (([who] of self) - 1)( ~+ M+ v9 p5 K6 Q
[trade-record-all]of customer
4 T& o0 d% V4 P' h. F
5 q: G" L1 O6 s( i  s. [; Q& \
set [trade-record-one-len] of self length [trade-record-one] of self
8 X5 B5 {' G# K+ }. b
* l! Q/ {' q" O0 m+ |* d1 \( z
set trade-record-current( list (timer) (random money-upper-limit))
! m' J1 I; k' ]* H; m8 O- e6 Q3 X' Y+ q

* |1 Y: t  R3 H2 b3 T/ V5 `ask self [do-trust]5 c5 q" ]4 w' |& v
;;
先求ij的信任度# O9 _$ p- g9 z

# S  m3 R1 ]# S  Zif ([trust-ok] of self)* |5 X* s7 J; a
;;
根据ij的信任度来决定是否与j进行交易[
8 }7 P8 U$ j" G* Q# u! Hask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself% \# Y; [! o2 m0 o) W) B

* n4 v: b8 ^/ h' ]- D- O[
* z3 r; ^: K& i1 P, w) f

" j. u* k; R; ^8 n# ?, Cdo-trade
7 {4 p2 l' v7 f$ f
3 {, S8 _. {, I
update-credibility-ijl

6 i6 X" n: M9 C" l
' l% a2 J! a: [' [3 Qupdate-credibility-list
* N, X( A- a9 A7 }9 ?1 ]4 T

2 r8 |% s; K$ T
! k' O8 W. u: Y7 F4 j& i: ^update-global-reputation-list

& h. [, S* z. i0 [: O' S2 b6 z) M- h2 N, o
poll-class
" r% d( ?9 @8 B
0 G2 \- m9 k& M* P
get-color

9 I. P/ H% K0 e3 i+ G' T
- T( k- x' |) r9 P]]! [% ^: i' ^% O% {* P

+ e, w  V9 Q& A' A) e% p+ L;;
如果所得的信任度满足条件,则进行交易
# O) B/ v: @: n8 W( |/ m. E& q8 h6 {( K2 m+ K; c" v1 o2 Q/ C
[

8 @6 x6 ^9 ]0 M; o3 N( x- y9 A/ N& A7 b; L4 s6 K9 x& l+ K; V! y
rt random 360
# M2 d% X/ ]8 |! I0 V
' L5 m  q) ]* g9 Z* d# s
fd 1

9 H5 }, x8 T' E4 b1 p/ R* R
) a2 I- V8 x6 ^  Z5 @]
& A7 T# w9 e% W8 G
, s5 K* U+ N! m! O
end
+ O; x! x  o: N7 B6 u* I

" \6 M0 B! ?: G( A4 G7 ato do-trust
( V: _7 Y( F: Z& Q1 P3 D' f2 Fset trust-ok False$ A& ^/ G5 I, l7 W9 K+ [& s

& @- N* Q: O! o3 Y' C/ u

: Z' q; u+ C1 G' r0 ilet max-trade-times 0
: {1 U( b) M% u4 K0 J& E$ ]foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
+ H5 o; V! L1 \0 F$ x4 ]) x+ {  tlet max-trade-money 0" {+ s' K! o+ J: z: C! m' p
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
1 `  |4 W7 |: ^% V4 T4 m2 y* a# |) Zlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))# F3 T( |9 G4 X8 ^) G' M

2 M  h. e8 P/ g' V

1 ?7 Z: W' N9 P. g  Pget-global-proportion
% b! w7 D$ {; _# P$ B. M4 D1 Clet trust-value
' u1 C" Q( C7 }$ q2 ~% O  b# }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)
1 Z2 k% Z; F: f1 ?- a  S" S: m
if(trust-value > trade-trust-value)
4 D9 G+ S  K: }4 g  f[set trust-ok true]- L$ b3 G, `0 m' T
end
2 k3 _7 `  H, t# Q3 F2 X" y! Z# n
! M# L8 \4 e: _- x( M3 Z( F, Qto get-global-proportion! w6 S0 o- P4 Y, X8 v) \
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
3 Z, Q- @5 b9 q7 i[set global-proportion 0]
* e9 D& a3 r3 r7 n# H1 ~  \- W[let i 0
9 `; A  E5 T, R5 f, ?let sum-money 0( J; d2 _9 J6 _, P3 {- f
while[ i < people]0 Z6 `; _3 R. e+ c9 Y
[& u( ~6 \# g+ X/ p
if( length (item i
3 v0 U+ L2 l# l- `9 u1 d[trade-record-all] of customer) > 3 )
6 a, o- D% D- |5 W- g* J. I
[
9 K& F# d' V# q) c+ J- M; x3 Tset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
- U  v) U" R' t# h]
* [0 V. Z: \9 B]
* X9 L/ }; V$ s; K) Klet j 0! N/ r' ^( |2 R2 W) e- u2 H' r
let note 07 H* P8 c/ J5 l9 e* Q8 [/ y' {5 X" A7 T
while[ j < people]) L" T4 j) b2 f9 b& M8 D. w: |
[
- M& x7 b6 h: d8 @$ {9 wif( length (item i
$ |$ J  @2 b' r9 Y! N3 u& T[trade-record-all] of customer) > 3 )
( D# N* l' X) l; P1 M2 s7 T( D
[
% E2 {( N+ B; p* D, n% O; }4 xifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
3 e1 p8 V; L% _6 {[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
2 V% t' A8 H' T  m3 \8 W1 O  b" s[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]6 t- \5 ?" W6 K% @8 [
]2 e* @. ]3 _! s. I
]! n; p' r( V- m" t
set global-proportion note2 R# [% J2 {& e* A- O3 `
]
5 A- g- h) q$ n' \end
/ G# v. ~3 r3 g2 @
# T# D. Q( ]( e0 W- W1 {) p7 uto do-trade
+ ~2 ]7 A6 z' \. ~0 V, _7 K9 x;;
这个过程实际上是给双方作出评价的过程
) U4 a- B% I3 y* g. gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价! i" x, F, o  }* g
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价; C% a! D" s+ z' ]
set trade-record-current lput(timer) trade-record-current/ W+ J: \# ]" m- j+ f" J
;;
评价时间
1 ]6 M+ e/ M) t+ d5 X9 |4 Mask myself [
6 d% C5 j" C6 D& V1 Uupdate-local-reputation: `3 t8 Q& R% Y5 k; B' d2 ?6 R
set trade-record-current lput([local-reputation] of myself) trade-record-current
: }! @( x4 I9 i. |]$ ^& `1 i# a% _+ S; \6 \/ O- t
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself/ _/ k" S9 M& i% e  Z
;;
将此次交易的记录加入到trade-record-one
. H2 e$ E6 ?+ x+ P- Z' |( ]set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
7 e8 r* w3 v0 f* Z# s7 `- A3 Alet note (item 2 trade-record-current ). F  C3 Z) \. L2 i  I8 O, y% X
set trade-record-current
: Z6 e6 Z; @+ E6 \. H(replace-item 2 trade-record-current (item 3 trade-record-current))
' Z6 X2 V# ?" h4 e/ T+ v. U3 W
set trade-record-current
7 k# S/ f4 L1 h, Q  R& {7 r: [(replace-item 3 trade-record-current note)( ^" R* F2 w, R

2 D& e4 j. |$ \& U
% Q2 Q: h, ~. S# }6 @2 O
ask customer [$ e" H  ?! Z( O& f1 M) l
update-local-reputation
/ D  I; ?- a  j  b+ J" x) ~set trade-record-current
& _( m2 l$ O1 Y8 R9 |(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
5 ]6 d8 E* N/ s
]
3 l9 w- @/ V8 L6 e8 p) U+ W' X' D" B. A& ^3 R3 ^  M
! @+ J& r& H6 {: _( ^
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
( f* [: G' E8 r& T

; T) u" d- ^6 X! b2 l9 K1 Mset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
' a7 m8 @" K/ Q' k. P" f) y; F;;
将此次交易的记录加入到customertrade-record-all9 C) p$ J! ?( i; I0 k/ [
end
' p( @  Y# x" B5 S# L& C1 T' f1 q# B" \" ~% r
to update-local-reputation
, b2 s- K2 B7 I1 n1 M# eset [trade-record-one-len] of myself length [trade-record-one] of myself# U( G" |- x9 p! L9 l8 \

) b. @3 e9 n% H' }# P/ p6 N1 Y
0 H4 k8 W3 C" A) D4 @;;if [trade-record-one-len] of myself > 3

& l5 h6 w0 V  l0 K/ y( S! pupdate-neighbor-total
! g0 e8 T$ v/ c;;
更新邻居节点的数目,在此进行/ L" j  ?8 ?$ e" l8 }3 p$ E
let i 3' w) d# O$ k3 O( O; R- Q
let sum-time 0* M+ ?, R$ U6 [5 u8 S0 ~
while[i < [trade-record-one-len] of myself]
! \( b" |4 d  `8 D& w[
& A3 O8 ^- c, q& o% c  e9 Q! Eset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )4 d# A7 R$ A3 w
set i3 U4 x# {; [7 l" Q1 X# z7 e& R
( i + 1)

) |' D9 c1 c. p) w( _. ~3 q0 {]9 j3 E# z) H; Y
let j 34 l; a* u6 O- p3 x
let sum-money 0
1 k4 T4 I% z' K6 F" m; _% J) ywhile[j < [trade-record-one-len] of myself]: g3 i- C5 o3 j* r2 m% P
[* Q/ @/ V. j  r+ m6 x4 U5 ^' [  ?# 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)" l( u0 Z0 e0 \. ~- x2 Y
set j% m- `6 x6 ?: J! ~/ e
( j + 1)
8 c9 A6 v: f+ M7 W5 U- C2 K
]
9 V  r$ u, D) Ylet k 3
; _, e- a" h# ^let power 0
0 M& O& Z! _7 c5 c/ dlet local 02 V, @& |4 q4 p+ y
while [k <[trade-record-one-len] of myself]- ~0 y0 D# T+ k: V( Y/ f
[
9 A7 U& u" U- V. C8 m* P$ m! Xset 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 A' T! q- O! z4 @8 Q" Wset k (k + 1)1 x0 ]" p% U) k- ^
]
2 c; o7 Z" m0 f2 Q' lset [local-reputation] of myself (local)1 q1 K% C6 r3 }
end& i/ E( P/ V# a" o- }. O4 s  h0 ^/ C
- y; z* U- Y: Y3 ?) K) i1 I
to update-neighbor-total9 V# }  s$ a' O

- G3 _2 s/ c$ u2 f( zif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
9 @, B8 o. a/ E, `$ o! b* ?& v* P5 R- o0 O7 n) E. Z

) s1 c& R% w$ b6 s( l6 Uend
' q, ^" Q$ q7 B" ?' A0 i" t% k8 i/ V$ `: i) f) c: g( A5 D
to update-credibility-ijl % k2 {. ~) _( i& Z2 _9 j

$ H4 o( B) f6 _! ~. O+ M0 u;;
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。
. ?" Z0 U0 z4 ^) M* X$ Vlet l 04 I) n- S3 O2 w9 N
while[ l < people ]1 l. a$ s( e& S
;;
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
; e+ {4 L+ ~! Z6 T/ V[# R6 {% G: S& A) \' T
let trade-record-one-j-l-len length item l ([trade-record-all] of customer): R+ L; i8 t) t% j
if (trade-record-one-j-l-len > 3)
0 k  g5 I0 a) ]3 D[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: u, @: \. t$ b, ]- V" F5 u" C! ~6 i
let i 3
- x$ _! J' h& T; \' f  T2 {let sum-time 0( o4 [- M8 t2 Q4 q( Z
while[i < trade-record-one-len]
0 U! u4 x6 J- c2 ?% B+ C[& J& _. h1 e' K: J/ G
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )3 u7 Y) |# l3 U0 v  k, e1 T
set i
& x8 `) V- ]/ R) M* `1 o+ p/ C( i + 1)

2 P& n8 Q9 ]' ^- G]
$ i' z, b3 E3 qlet credibility-i-j-l 0" m% ^8 {1 O( z! o) Q5 I/ y
;;i
评价(jjl的评价)0 a. s" E* e8 {4 S* f3 N
let j 3' d" [. F  J0 e0 F
let k 4  [+ d  b4 e9 E! u2 q1 e
while[j < trade-record-one-len]
4 M  Y" l: s8 }4 u  q4 C( t  Y[
, X# j3 z3 i" `" rwhile [((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" H1 @0 _4 ?4 i0 r% r
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)
: H( V# t1 ]8 R" j( p9 p& I1 nset j
- o( X. y9 O( m% N( [* c( b2 o- @( j + 1)

" X7 ]% D9 L, E# p' d4 N3 F]
8 Z- f; n, z3 N+ i: A* nset [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+ Z2 n- t9 c! F9 Q2 x
7 W: ^$ P6 x( S2 Q! J, V
. B% u- x6 A; v
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))2 ?. M& \; r) K4 e
;;
及时更新il的评价质量的评价/ C. a2 Q/ z0 s" f' k$ ~6 u- d
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
6 l% M1 ^0 ^6 k4 _( ^! Z$ _: D; E* F) Uset l (l + 1)
7 |! |0 v* I5 p8 E% F]6 O" R. S0 `2 K& i8 h
end% U- f* B# K4 L  Y! _
4 _. D' G# F$ x; J; f
to update-credibility-list4 R7 C! H3 I; U( K% o$ C
let i 0
' i" [/ K0 ]8 k9 s9 r: x: ?7 swhile[i < people]
6 _+ H7 C! e; p; `1 x[
+ M+ s0 t0 z- D0 Z6 mlet j 0
9 ~# m/ g) r! P; _! Alet note 0
! U; |* w% Y& @% Q7 L7 ~let k 0
6 @+ ]: |; `1 T, h;;
计作出过评价的邻居节点的数目
  R; Q, L: |" |4 B& Wwhile[j < people]$ M: J: d9 K1 ]& |, r0 G
[  t+ T. ^% c+ `* Y: g$ h) [7 ~
if (item j( [credibility] of turtle (i + 1)) != -1)+ [. |, p) g8 s5 ?9 s9 {* ?+ n
;;
判断是否给本turtle的评价质量做出过评价的节点
+ [) k4 }3 O2 _) v[set note (note + item j ([credibility]of turtle (i + 1)))
6 \/ x9 ]0 }- l8 Q( Q& i% p) a;;*(exp (-(people - 2)))/(people - 2))]
; b$ X- g6 ^! r
set k (k + 1)7 T! d. d5 y- X7 F2 \
]
; p/ e+ T$ X" @2 F( X  Y9 Aset j (j + 1)
; W/ j/ i0 q3 N/ M  {]
8 w, Z" |1 d  y/ cset note (note *(exp (- (1 / k)))/ k)$ d9 |) G9 V. `8 g" [
set credibility-list (replace-item i credibility-list note)
+ a. W7 Q5 x) h; u+ d4 D) Iset i (i + 1)5 m7 Q3 [3 w5 ^5 A. O9 P! F
]& h% H* S# M0 o1 @
end
9 c$ A0 u' Q* d" w& w6 X/ E$ y0 ]9 K; j
to update-global-reputation-list" W8 _  q- B8 ?8 g! a
let j 08 v: x" Y1 G6 Q' e1 p+ B
while[j < people]
! P' q3 S6 l$ d) V( q& S: d. s[6 c2 B9 Y9 B3 u
let new 0
1 o: v/ ]1 _# Q4 i# J6 n; n;;
暂存新的一个全局声誉+ h" j6 E+ S) B8 I8 V
let i 0
6 F5 Q) v4 u$ U- d# K( l# o! w9 Xlet sum-money 09 x- I7 ?; `" r3 h
let credibility-money 0) h& A8 \1 j6 g: `9 p0 @
while [i < people]
' b  r& w$ j" s8 l7 N+ u[- @, l: ^7 Y- X. C( n: h: k
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))/ J1 V7 p" r, C1 p( T6 j/ x$ D
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
! z% J  R9 N: z  h% gset i (i + 1)  {3 E9 q1 A5 T+ M2 p$ ?" L
]3 |3 o$ ^7 W: W+ Y, X
let k 08 L7 u; W+ \1 }/ ]; m; `% X9 U9 X2 P$ J
let new1 0/ I; F. \# v! Z  _3 O( y
while [k < people]
' R- `1 k' J  p4 ][
( K9 r, w8 H  |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)& Q- h2 L8 v# d0 J
set k (k + 1)( v* @! j6 z/ q( E! ]7 h+ f% c
]
/ g- z9 N6 e( E+ X$ Kset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 8 `+ ^! Y/ _' z/ n/ C
set global-reputation-list (replace-item j global-reputation-list new)" [( ?7 |3 N" Q9 K
set j (j + 1)
" D2 q, W% T# M8 `. p' E* j8 O( a% X]; |8 Q4 O+ E7 N& t
end
1 Z3 K9 r4 p* L. x( n. H' N' F( H2 n  U& w

' _. K  {+ B  b4 Z5 a. B4 b
9 Y% N5 C9 c; ?* vto get-color
8 w9 `5 l+ l8 D- Z& k  Z
6 @$ s# K$ X) `. ^% vset color blue

4 ?  b. t: r" ~1 T# Bend7 F: l9 I9 B# O. G. s

6 X; ?# a$ S) R- C9 {" Q7 E2 \) e' yto poll-class* e" [  \  Y8 f% ~: ~) D
end2 r: X+ H1 q  b' _, d
0 g3 m+ I! i. A+ Q
to setup-plot1
9 h) ^+ h/ x9 U2 q! M
  J& Z$ F5 H2 e# v- V+ G& Y  m5 Pset-current-plot "Trends-of-Local-reputation"

  @5 Z0 e* z( v: n  b$ M- H: _/ \5 n7 d! }) y7 X0 ]% A  U
set-plot-x-range 0 xmax
, `3 q5 Y+ @( @/ u4 R

! u; T, ]+ P/ W0 Wset-plot-y-range 0.0 ymax
% d1 @$ ~. R7 _+ ]  U- W1 s
end
* Q' m; i) a0 n; r! V7 d4 T" u- Z6 L  D; p1 @2 b3 _" y
to setup-plot2
, {; p. B5 H6 @# U) H6 }
0 `. c9 l6 z1 X3 K8 Hset-current-plot "Trends-of-global-reputation"
+ O7 @  `$ V0 o
- x8 Z1 g% T: ]' A5 {- z
set-plot-x-range 0 xmax
  z0 ?! N$ e, W& U( t
( A& K" v% X: P" L- S4 T3 ?
set-plot-y-range 0.0 ymax
# k4 M* O, m; ~6 Z0 u/ k9 i
end& i) o: ?1 Y# a% H$ b5 B

2 V( T4 t4 G4 G0 e5 Gto setup-plot3
  A! K. o3 ~6 M* [2 I* H+ }# {& t7 n9 G7 u5 N) |
set-current-plot "Trends-of-credibility"

* c! Z+ H  e9 s) _6 B" U5 ]" O3 e9 g8 N
set-plot-x-range 0 xmax
% x9 W( i, m' x5 G
7 J1 e  p# Q  G6 u/ c
set-plot-y-range 0.0 ymax

- e5 R5 d: F  R( Yend
) s! d. i/ ?: ^3 _7 |3 q
" V# Z* g2 d9 @% |to do-plots
1 K1 c* i/ y4 A* [8 v; {set-current-plot "Trends-of-Local-reputation"
) h# @% Y; ^, nset-current-plot-pen "Honest service"  z% c  m& m5 Q& ]9 Q8 ]- D
end+ e7 d; K3 G8 `5 h4 @) ?: P
% s5 ]+ T0 n  A
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
6 \; ?1 f1 ^9 P  v- s: d! a% L! r$ c2 u0 H8 t: {: N
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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