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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 n- t& E5 i( V
to do-business
  I# w6 o2 @, r! O rt random 360- P6 M6 R2 C" \
fd 1
# s( M( o" ^0 E1 x9 O* d/ ~8 z' w ifelse(other turtles-here != nobody)[
& Z: r7 H7 j" d* K5 L. K$ b   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.
$ \9 M& `: F0 q- G! n( i   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
$ i% k$ C$ _) w3 C) ^& W   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer- C4 o% C0 [) c$ `/ @0 ^
   set [trade-record-one-len] of self length [trade-record-one] of self' ?7 g7 a0 i& T4 F3 w" z
   set trade-record-current( list (timer) (random money-upper-limit))) V1 a  C, j& u

7 u7 l4 r) Y1 d$ G6 I问题的提示如下:
4 Q; N. G4 C6 _+ g. K; k8 _4 h3 p% l" t$ I* ^3 t
error while turtle 50 running OF in procedure DO-BUSINESS( a* Z$ v  K# x1 ?) \
  called by procedure GO- m3 T+ O' ^2 W. g9 [' o' t; w: {
OF expected input to be a turtle agentset or turtle but got NOBODY instead.( @/ t# ~8 e* ^1 [5 u# N1 U
(halted running of go)
% h' s3 K: n( S+ }. F* q7 Z3 b8 ~* k( F& ?! 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~~
. P' X7 F) M2 u" C$ u) H$ |4 x5 g0 ?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/ C+ q! E0 P; q6 X, F
globals[  R8 e, S' G7 q2 U2 D
xmax* r+ e8 _1 Q" [9 v- G. b
ymax& l7 `. u. f: j- X1 G; d; P
global-reputation-list
6 l1 m" c0 Z- [. Q9 H9 {- O3 K3 W' i9 q0 M- e* ^
;;
每一个turtle的全局声誉都存在此LIST: Y8 b* d9 T' f( E' I0 M2 H9 S7 W/ s
credibility-list
3 Z! M: n5 G4 C8 F: @! D8 t+ C3 f8 M;;
每一个turtle的评价可信度
. d' ]2 C4 \; s/ Z9 J* P, @" ihonest-service1 y/ w% G) `. G5 y
unhonest-service9 y2 }+ F8 F* Z9 z" S( E
oscillation- O1 K- s) a6 U; q' L
rand-dynamic' y3 v( F$ E- V0 z) h! E
]
# {. ?7 W3 n$ ]( w# e% s. ~( L+ C# g" ~' i4 X; l
turtles-own[+ N$ A6 B  D# f, k' O; s
trade-record-all
/ }, P3 ^0 k5 ?4 V0 ^8 _;;a list of lists,
trade-record-one组成2 J( ~( b6 X( ~9 a3 O
trade-record-one
, J2 \1 p$ Y# C5 ]' ~1 q7 U% y  {, r;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录, M1 h: F! w" }/ M

% s9 r2 s+ b9 a( U5 u# a;;[
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 g0 A  X9 K  b) 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]3 [! O0 C# Y, ~/ Z  S! ?. {8 N
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& Y9 z& a: e9 `  h# |, d$ R
neighbor-total: O$ v$ i& `3 Z4 ?  G; J0 D% ]. D
;;
记录该turtle的邻居节点的数目
0 a9 y* E) h/ M1 c1 Strade-time
: a' K. h4 _5 u;;
当前发生交易的turtle的交易时间, i) S, j) W  g2 R: k
appraise-give, G3 z9 _# ~4 R) R. [
;;
当前发生交易时给出的评价% X2 e+ N2 g% V( r# m. J
appraise-receive
( o. W! u7 X  ?3 \1 W8 c# L+ B;;
当前发生交易时收到的评价
3 _% X2 j1 r9 e1 Lappraise-time
3 B2 t6 ], j$ T! V8 V' V;;
当前发生交易时的评价时间, Y% b  J5 K7 d* p+ u( N6 G
local-reputation-now;;此次交易后相对于对方turtle的局部声誉  h5 ]7 E( c; i% M) B* A
trade-times-total
6 i# Y! h, y) |8 t;;
与当前turtle的交易总次数
' X% d  ~8 ]* D9 ztrade-money-total
4 R3 \: \8 ~( y- x  b! R;;
与当前turtle的交易总金额
3 W2 s9 i: ^: t5 P; zlocal-reputation9 o/ K! ~% B% l) N4 p
global-reputation! T+ ~( [/ F! D$ _: _0 y5 `* T. W$ m% Z
credibility
5 M* y1 w4 G  v. d/ N/ B;;
评价可信度,每次交易后都需要更新4 F1 m: U' s$ t3 t
credibility-all: d' T6 B2 Q2 v! B  h* Y4 r5 A
;;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
4 ^3 v( {( T$ f" ^
- z, C7 R2 J- A; H& _;;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
  J7 J- T' m2 g5 fcredibility-one
2 O/ h6 \9 l& `7 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people
* L3 x+ r6 ]* Y9 c: x' D0 Sglobal-proportion3 s! K( k, \7 j; Q. z3 r  p/ s
customer( d, m! u( X! H2 Q
customer-no
  _' `, L' a# c1 V/ D- f! htrust-ok) z% c9 p1 ~0 |$ ?: m+ U
trade-record-one-len;;trade-record-one的长度( ?7 Z* x& t, {8 P4 |  i
]/ K7 s* }* H, r! B& G
( q" T+ k  D. c2 {5 L5 Y
;;setup procedure8 p# x, L5 |7 ^0 g: F9 e. J! K+ |. g

3 @- \2 y- t! D$ Dto setup
; D! b) N0 A; r7 m* f2 I: x
1 W3 U$ j3 T  u+ z6 }" Eca

& E5 w: b1 `& B( a" R) {9 T6 o  p& T& ?5 p
initialize-settings

: E6 a6 j4 b% z9 Y. x  U
* p8 ]5 a& l) A) J( i) w" T8 |crt people [setup-turtles]

. }' b9 j8 W- M' _3 Z6 d
8 a; f: \( r, F% s) A* Preset-timer
. f! Q6 v# o' r9 C5 |

2 P' V6 D5 ]2 J  fpoll-class

! M; w, H9 j6 g) T" a" V, a4 a, S! g: s
setup-plots
3 ]8 z* R( l* ^! l" M; ~
; d8 n- I4 i" v
do-plots

1 j) w" L+ W" A  v5 Z( W2 Yend& t: a9 j9 P; r) B- O
7 w0 `6 N9 S; l5 u; H6 @* w  w8 E# ^5 C
to initialize-settings3 u2 t, b! _% P3 N* U' w7 |

. \$ W2 |! ^5 j& G9 M) sset global-reputation-list []
1 F6 [. Y  O. P- N, q

2 r+ f$ |+ q6 F. }& o$ x- p- P$ i5 `set credibility-list n-values people [0.5]
6 ^! }) s2 T2 ]( Y. n3 s
7 v1 e) O5 l4 R, \- g0 n
set honest-service 0
4 Z3 R2 L. Y1 n) E. W5 f: `
0 W/ A4 N7 t4 c* Q% U# E3 z) }6 X4 L- l
set unhonest-service 0
, n4 [* t; d) j7 w# V2 w

: e# {; d5 \) g/ u' I5 f  \set oscillation 0
6 g" X" D( R" @! g. l0 L6 o& M) I
8 U- l4 d1 z" A: ]0 Z, n1 N
set rand-dynamic 0

- m- y! L0 l* r8 y# g( G  E$ {9 Dend4 l/ i4 c: {) ]6 @
( S1 b( Y" p; W- o$ U
to setup-turtles + K; A- K2 F& Q( D, b, k
set shape "person"% a, V* R0 G2 I$ |5 {' d) \4 s9 Y
setxy random-xcor random-ycor
" x5 @0 n3 v9 T, uset trade-record-one []
' M, b; I. u: S. s& T( t) \' S
5 D/ S# ~9 ~* W$ p
set trade-record-all n-values people [(list (? + 1) 0 0)]
5 y+ K4 G& t0 Z# ^" `1 e; O
" d' t6 f. x2 Y/ |
set trade-record-current []
3 z% _- G! x; F+ M$ Uset credibility-receive []; R: ?# y/ s" U  O
set local-reputation 0.5. g* w0 o: X$ Z% R
set neighbor-total 0" s) v+ n2 {" a3 y7 y( p
set trade-times-total 00 v, ~# x4 A1 S7 F/ H1 E
set trade-money-total 0
- @- c! c% Z; L1 W# H, P6 c" f' i  tset customer nobody
8 k1 M  t5 s+ |0 Fset credibility-all n-values people [creat-credibility]
' F! `% G9 I) h; Y8 X* W  Kset credibility n-values people [-1]
4 ?. {2 L+ ]7 {2 a4 C$ rget-color) j( X9 ~7 O  q9 Z" l! C
. U) `, |/ G# S: ]* J( E# f7 w
end
! q# h2 G, _: Z  c" B5 y! w, E9 G1 O$ e& d+ k; R$ t* X* O" O
to-report creat-credibility: Q- Y5 [6 _7 i
report n-values people [0.5]
* Z* S+ K0 s3 ~end! a8 Q3 c6 z* J$ a  x

7 j! Z# Y( X$ L6 z: j& Eto setup-plots
: y) x8 |  J6 ]$ Q" D5 p- {
6 s& h7 a1 Y7 ?' t& k1 D  y( Mset xmax 30
: F' r( }5 c( i
/ f; Z, k) z+ _1 @+ |* H6 Z
set ymax 1.0

, g$ v& I3 T5 d2 H- h0 z( ]7 h& |& \% r$ h
clear-all-plots
/ q2 G2 P: Y; `+ l3 @2 ^

0 [; R8 G$ F, Y: E- X: b" N* W8 t0 t' Ksetup-plot1
) V+ g2 Y5 ?6 _% [, E% r

8 I7 h' v. W) V' ~0 [5 j9 wsetup-plot2

' A) |6 ^  G" z7 o  Y, ^* h2 I0 O% d; p
setup-plot3

& Y; i  Y9 b+ Z' @) F9 J* Oend
3 V# c, o; b0 D3 U- S4 h, g1 E4 ~+ n; U( i3 f# W, K; \9 I
;;run time procedures% R) m0 W- p% T7 ?

' q/ M5 j8 N0 F7 c# ]to go. `/ q9 [2 n4 E6 g

- k& x9 ?9 F" ]! C7 M. `1 J. Vask turtles [do-business]
; |0 i. d1 A* d& B) S4 D
end* h! T% l# Q) f% T

9 \% u0 v3 j6 e+ Y& u4 g0 f; j9 [to do-business 1 b! f7 c% b0 [" N- e3 u2 G5 l

5 C1 S9 F: P8 r* a- e3 }% u8 ^- f8 T2 v. e6 M
rt random 360
1 f" f8 j9 z% z9 N
# P% H7 S" R4 v1 y" U! t% E
fd 1

' o5 N" l2 r4 K; k- g' S- y) i3 |, E1 r! `
ifelse(other turtles-here != nobody)[
) Z% c/ D; s* P; T/ d- Q

0 |- F2 `* ~! _5 [set customer one-of other turtles-here

' F1 J8 N4 N# ~. e8 z
: P6 g) |, }9 s; C' R1 d! y7 Y;; set [customer] of customer myself
3 h$ q1 p9 k5 V3 S0 e# _2 P

' h+ m! w- `) w4 i+ Y! J& e! Wset [trade-record-one] of self item (([who] of customer) - 1)
3 t) B3 }  |& N9 P$ c* {* ][trade-record-all]of self+ L1 F, h. o0 w: Y% |" M
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

; I8 r5 G! ], Y. y& a- D+ }2 w2 X1 y& Y1 z8 |) M
set [trade-record-one] of customer item (([who] of self) - 1)' H) t! ]- \/ y
[trade-record-all]of customer
: b/ Z: n* }* M
  I% k3 `9 [# R- Y5 B  l+ {
set [trade-record-one-len] of self length [trade-record-one] of self

1 ?" A% u* _( d# P7 S( }! G# F
8 p& k1 }* b6 ~, x1 t% A! {- Xset trade-record-current( list (timer) (random money-upper-limit))

% K' [* E; g9 i% @5 e: n
+ O( |) n! c" N6 eask self [do-trust]* Y4 \* x+ ^) X5 p' Q* ^8 ~
;;
先求ij的信任度
5 Z  K# s6 E" d$ l7 m& {5 R- }1 O+ M# Z
if ([trust-ok] of self)/ z0 Y- C2 \9 f. q# \8 I; p1 G
;;
根据ij的信任度来决定是否与j进行交易[
6 _% `; a9 T' K6 M2 I1 M5 [9 bask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
" s" i7 ~. ~' p# p7 `  B/ _8 \4 a5 v/ G
[

- `; m% Q' C+ P0 N* q( ?
' D& F1 j" A- ^0 M/ edo-trade

, b. `, ?* W( t  M9 P0 G
1 T9 R6 Y) p, P9 \/ R6 l: Qupdate-credibility-ijl

9 g) g  Z0 o+ D: P, O2 M: S4 n
7 b9 w9 l4 O' L# V/ y/ Rupdate-credibility-list/ `8 ?$ h/ b5 Z4 S. z8 y! ?% g

: Y. f4 x. x6 y1 m) l5 v6 W8 R# m4 ^2 l! _2 |- ~
update-global-reputation-list

* O. `  O$ F3 f7 x% a+ e) @
/ w& f  H0 t4 G- s* k* `1 H1 ^poll-class

: o* {) i$ T0 n/ _! L! [
' e* ?' N( g+ }( jget-color
/ [  n3 \# C1 j% z! @6 ^6 S
* A& U9 V5 L' o( N1 [0 \! E! k
]]1 q1 e& w5 Y% T- t

8 Q8 w( e1 X; g9 T, r( U+ b- M$ W;;
如果所得的信任度满足条件,则进行交易
! W4 Q' t$ Y+ u( H: a! o1 K- K
0 S4 g( I+ L! i6 l. J[
6 F8 `$ i! j" [: V& x

& ^& I9 s7 _2 m9 i# G0 prt random 360
# p+ y7 Z6 C0 o( {) {7 J

: K; z" k+ P/ {- f2 I# }$ sfd 1
" D& e, h; z0 T/ g6 s2 E% i/ m1 n

; e( P8 H. Q3 G2 P9 i# s]

4 H* K- {/ {9 L& w
# o0 K6 n' p8 F; c- Vend

7 e5 J& F# M1 ]* M
# a! G4 m% j, J' Xto do-trust ; M" @1 G( S+ O, U$ u: @
set trust-ok False
: t; W' `7 }% g6 N: I1 ]# e2 X+ {8 R: ~$ y* N# f8 I: ~

+ Y( ]# i7 Q$ L& ~let max-trade-times 00 [- g$ {4 N! F- q
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]6 u9 |' n% ]. a& q& k5 x3 M
let max-trade-money 0
( i% A) D) G, Wforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
5 h  f" R" r; l1 o) c1 Clet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
: V* c( [$ [8 A0 U6 m; `2 J% w. U. H9 l, i

" g6 g! Q2 b4 c0 ?" s$ @get-global-proportion; u7 z% I0 z5 q1 T& y+ m% ~
let trust-value
: Y, {8 B, D; n: Elocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
" G9 }% x& a0 Y6 ?
if(trust-value > trade-trust-value)6 p$ z" j4 R% f
[set trust-ok true]( I2 |4 T( X' D
end
2 Q- w6 z% X* b
9 q  o7 m/ S% w) ^; ^7 \; fto get-global-proportion/ I" G  Q/ C# ]9 p: @! {
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)% C. K; Z5 N8 f  h8 V" j, f. W
[set global-proportion 0]9 [) L0 c: ~0 Y1 V' {: W
[let i 0. a+ g0 u. ^# v6 Z
let sum-money 0
( n, ~/ e9 B0 \$ q" h. Uwhile[ i < people]/ ~$ S2 u( l& J: }
[
( M/ j- s7 t5 a" B8 Fif( length (item i# t1 D* k1 Z6 ]. Q
[trade-record-all] of customer) > 3 )
/ z8 F- r! i6 I
[0 R9 X# T3 M% E  ?* v. C  q
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))2 J/ ]! U$ @  F4 L
]  g& R4 e9 s  A+ H! q3 v
]
( f- D% C& y% U( m+ p3 i* V2 ~: k5 Blet j 0
  f# S: F- t/ {2 Rlet note 09 ]" B% d% ~! [+ p4 O! J
while[ j < people]
4 T& ]* ?' o' y5 W[
8 f* f- l& X& C! J  Uif( length (item i
: v2 d+ R$ v! E; d$ v) z[trade-record-all] of customer) > 3 )
2 R4 i% v, P( i* x% a; u6 V& s
[
( o- ?4 p- U$ w* g5 Aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
( [3 H1 t* X$ L1 \1 I. J5 }[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# O5 G" H8 p2 u, j[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
" ]+ j# {, K8 \  w6 N]2 j5 X$ I: V$ Y, V4 x5 h: h4 J6 t0 b
]+ N! H! C% T) ]2 `; n1 _, g1 A
set global-proportion note0 O' Y5 K5 n5 W+ B2 q* b
]
  Q$ M: A' }$ h( gend. F; x. \6 v  J) p+ ?  B5 g  j
+ x5 f  z- L* d: F5 P
to do-trade
; x8 E. V% ?1 f, T/ ?;;
这个过程实际上是给双方作出评价的过程1 @5 v+ k0 m$ J0 r+ |
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价3 Y0 x) Q4 f8 P7 k' h
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
- Q( j  r! j! m$ }8 _+ _* ]$ Eset trade-record-current lput(timer) trade-record-current2 `' @& ?& v' e, ]+ ?  `2 P6 Y
;;
评价时间+ R, ]- e5 H4 z& {1 v5 n5 n
ask myself [
3 m+ y# S4 [# F9 Tupdate-local-reputation. W, ]6 [2 |- j+ p
set trade-record-current lput([local-reputation] of myself) trade-record-current; ]+ z# P' o! L+ M3 B! z% i" E
]
4 u: y+ p# N% Zset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself" X% Z5 G9 J' y9 U# ^+ c/ E, E5 W
;;
将此次交易的记录加入到trade-record-one
, }$ B% M4 R* s/ m* g8 d1 Wset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)8 K# |* y. y1 P3 C6 Z- o: {
let note (item 2 trade-record-current )
' \- m9 r  q$ p; I7 bset trade-record-current: L9 Y2 Y+ ~- c# H. N
(replace-item 2 trade-record-current (item 3 trade-record-current))

- W- _( d6 }; U6 \% `0 ?$ Mset trade-record-current
5 U' s- B" G4 s5 N3 _5 J0 O" Q4 d: Z(replace-item 3 trade-record-current note)
: F  u8 \% H6 n$ V* d4 P$ s3 `$ a$ h3 d+ W
% h( G- E) [' t5 @8 X/ n" S0 x) X7 p
ask customer [% o; X+ y1 F# s! @
update-local-reputation3 K9 s" u; [' A3 s! R
set trade-record-current
/ n& f. Q0 j8 U% N+ w7 T: b(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
  L( x' ]' |: ?, \2 o: j) |
]- q  [  W+ s' n
8 m) ~' ^: o; I3 }2 ~
7 D" U5 J3 l4 H* J; C# I
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
; p7 W2 L  }& `7 }# D  y  @, r

+ f& L0 W6 Z: j9 n! nset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))# T6 b5 M9 `+ q! G! X, m* b: N& Z7 ~; s
;;
将此次交易的记录加入到customertrade-record-all
, v, V8 B; {8 c  P  o6 }2 V/ Fend* [2 c' r$ ^" N3 W( Z

5 |- \0 W4 t: a' E7 b- gto update-local-reputation
5 k" U$ _, j% ]  P- Mset [trade-record-one-len] of myself length [trade-record-one] of myself
) M5 ?6 b' c9 j- D; ^3 ?, l% U& k4 |& F" `! y4 S. B5 n" O

7 I1 Q6 `6 Z6 b;;if [trade-record-one-len] of myself > 3
: U: c( a: E1 X
update-neighbor-total
/ k, Y& y6 I4 e7 z+ T9 j& y5 H, e  ]+ j;;
更新邻居节点的数目,在此进行
  K2 e: z8 L6 g- E5 Glet i 3. n4 q7 V1 n! l; w+ i
let sum-time 08 G; y5 a" |8 N8 B
while[i < [trade-record-one-len] of myself]6 ^  O' O, i* w
[) U0 A1 f; z1 P8 {1 Y: ]+ x9 j7 X
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
! H# E) E' m1 V% tset i
% m1 K8 V, N1 d5 T8 w( i + 1)

  Q, E7 m8 f1 g/ j8 n4 u; ?]
$ v6 Z& H; f! ^let j 3
) w: N& V% X- ]. _, Wlet sum-money 0
" [' Y) S( }. a) Wwhile[j < [trade-record-one-len] of myself]3 m6 x( [. s$ i! J
[8 x9 g# w$ I* Z: s
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)
0 Y8 z8 z% \( z8 P; a0 t/ qset j  X! y0 ]( a4 s; |
( j + 1)

. f+ g& \5 S$ T0 `8 K3 z]& ^5 j' C& F6 e6 |1 A8 q% W
let k 3, T1 O$ p, l& U
let power 06 L0 M( z2 B: y" o* A7 ^7 B* y
let local 0( \. l2 \6 R" G+ X) i  K
while [k <[trade-record-one-len] of myself]7 H, x, H& s+ l5 D8 ~! H; }' y
[% M2 \. Y# h, d' ^/ ^( d! _7 q- P  [
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)
6 y  j; V  j8 h3 i/ y) \: nset k (k + 1)5 Z; z: {) y3 e# F  M
]
& l" P7 V" b) Z+ |+ d8 A; m' _4 gset [local-reputation] of myself (local)
& Y0 O5 p5 U% I* F7 R# F! Aend+ o& k6 `) j( ~5 q
! {2 r: n6 C7 h0 y% r$ D7 G" b
to update-neighbor-total# V! v& p1 `5 \- f4 e  g9 H0 V% A- {
  y  f- U9 Q6 u' m1 {
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
7 H- t* d! |& z* @" |. k5 L6 ^
$ ^) q# |+ Y: d' z

2 l- {; G8 U+ A! kend* v: L) k5 x  S' h' `; s7 a

5 m; ?* W- [- s, v/ F  a# zto update-credibility-ijl
* p- ]) t7 s1 k$ w7 g( q9 W7 {$ a( E( j. G7 b. f! R
;;
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。1 i' ?- r: A5 V( q  Z
let l 0* r" F( u1 c0 |8 m% Q
while[ l < people ]
, O& S0 F3 J2 U: B, I;;
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# S1 Z1 u5 h3 _6 j8 }
[: S6 @3 [# m) L; r3 V0 F) x
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
3 w  {; O8 D) t+ Y/ ~% zif (trade-record-one-j-l-len > 3)
! O, _, ?7 Z  E/ z8 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-one' y4 R' e. n/ w
let i 3/ u* W9 P, q) R0 s0 Z) F
let sum-time 0
- _; D  R* T2 Hwhile[i < trade-record-one-len]* f* r* e2 F# h4 P) [6 W
[
! |8 }, Q& P$ m, a+ q7 Tset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
) P4 l( }$ Z- R9 m* ^set i
8 J; L2 V7 R! a' ?/ t4 _( i + 1)

% E& ~1 i6 f+ ?]
: C6 @. B; N' D5 G" M) h- P, _; Vlet credibility-i-j-l 00 f7 s3 \% m8 \( z; f3 I/ |
;;i
评价(jjl的评价)
8 ]$ D0 J+ {9 A4 m: `+ j5 ~let j 3
: d5 B$ u0 c$ [7 a  L2 {0 blet k 4
  b; `7 ^2 T, xwhile[j < trade-record-one-len]) v9 Z, ~# L. w: a, }
[
  _% L4 q" M$ O& _/ }! I/ v5 qwhile [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉* _& [1 t) E/ u) \% }5 L  @7 h) v
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)" V4 O) u& X/ j1 X8 o# W
set j5 @, G; Z3 |$ J# D5 d7 p0 K# a& d
( j + 1)
9 V3 R9 R& _8 G( m) {7 L
]3 X+ m8 p8 p& ?1 P- Y) i
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))2 G0 i5 t1 N  _; ]6 x
# h# p5 d$ @7 b- d
- L& b- R  s& C1 r: U) a5 v6 x1 i' s8 ^
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
4 t/ L5 V5 t# D, O;;
及时更新il的评价质量的评价
* f. V; q$ p& }) F  {1 K7 G4 w2 ~# Pset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
! n6 G( s' p" uset l (l + 1)
/ [* l9 c- [, W/ V]
% h# T4 m: N+ G1 `3 L! X7 a7 l# pend8 d2 A* n, c1 h4 V& \
7 N$ m- [7 A8 N7 b7 g( F  o" y
to update-credibility-list) F6 p& m3 J7 A5 q- K2 O6 q
let i 0, J! D1 K5 v( f
while[i < people]
8 y: k3 m; S6 {! h[% p: K+ _' B' v& P; b1 N7 c" P0 b
let j 0
4 y" F0 U1 c" Y& {, u7 m! \) qlet note 0
& E% [5 f6 \8 Q6 alet k 04 x0 [. b: [9 h- U* ]& s
;;
计作出过评价的邻居节点的数目
- y2 q5 E% ]6 w9 x4 `$ X4 m/ qwhile[j < people]3 s; x  H) n9 s% U, q2 j6 x
[
$ ?# [# F; e/ u3 W3 |if (item j( [credibility] of turtle (i + 1)) != -1)- o# V" P* I& K
;;
判断是否给本turtle的评价质量做出过评价的节点
& C2 g( i% l7 }) j/ m6 c- A[set note (note + item j ([credibility]of turtle (i + 1)))0 C- W% ]) }6 n8 F* s
;;*(exp (-(people - 2)))/(people - 2))]

: J3 h! c$ o; o( B8 [7 H7 b5 eset k (k + 1)
; b4 e  @/ c2 h6 u# ~]) S* M1 z4 r: j8 A% e
set j (j + 1)
4 D" @# O( P7 a' T0 o- j7 I7 X]( r, l# {8 L* ]9 F" W# E
set note (note *(exp (- (1 / k)))/ k): l8 @- I( l8 u% u; G( a+ x! ~
set credibility-list (replace-item i credibility-list note)
, q7 s4 w9 t7 P% f, Fset i (i + 1)* D  J' C7 A: I3 q" q" A
]- C, {5 k0 y* z; a1 ^
end& ~. J& N+ K" @6 L6 U4 x
* d! I3 c$ c3 v1 p( _4 {( R: O
to update-global-reputation-list
/ i# o; Q- b. _/ Y( {0 Tlet j 0
4 {: Y3 W! h- m; N+ ]while[j < people]0 l, A) D  L5 B6 q4 M. ~# ?! U( N
[5 D, z4 g" G% }  @
let new 0
. s) z7 Y  l2 R/ |" h;;
暂存新的一个全局声誉" v; c- p+ p5 x  G5 u
let i 0
9 f  r( L; N, F( t1 g/ C5 Flet sum-money 0
# C2 j# r2 a% y% l  R/ c: [3 rlet credibility-money 0
+ m+ E0 x* @9 H1 R( x5 m) H- N8 Bwhile [i < people]6 `5 ~* _6 l" B0 o
[
6 ^. ]/ Q" R. K2 S0 rset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
. q3 J0 g  M% q3 ]* p7 }( x+ n4 Eset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)); }$ W$ y( _7 F5 @+ U
set i (i + 1). m1 i, R8 a8 N& O) a4 b
]* U" Q5 C5 d+ L$ R0 r
let k 08 u& @/ Y; b1 J/ d* P
let new1 0
9 }4 n4 v" r, _3 x% K4 t1 Bwhile [k < people]* x6 B  b/ d- U6 W2 }7 N$ J
[
5 T! S% E) m$ _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)2 Q( |' f+ A5 e6 e1 S  z
set k (k + 1)
7 k, S. w, W% `: K# c]
. K- \0 \* j, ]- O6 sset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
4 `3 |3 _0 O2 ?# W8 F* n; {set global-reputation-list (replace-item j global-reputation-list new)
* y: x8 M6 a( a* j" @0 @6 B- {set j (j + 1)  a4 P, t- z9 r5 k
]
6 U) r" H7 z4 A: C* h  xend
$ W6 s( y# p  N! U! l- r6 I- e( ^0 h( Q, d5 t; K

: D' e# G# U! L: n: F. L; l
! j7 G3 S0 k! \3 I( B) Rto get-color
' D. v+ W  T4 b# S+ M7 ]2 [8 E! U$ A  p, e: M  \
set color blue
- q9 p  H1 n  e) u) R
end/ N* J/ y- E2 T  I) q, k

# A! h: P9 e7 \/ S: R8 Q& f# Q6 |to poll-class
7 P- R, |, @4 r( a% z4 E8 `( Uend6 s+ j" Y) ]2 P: e  @

0 l0 Z1 x1 s. A$ T; H. a: d, W& z' Yto setup-plot1
4 P3 X( [, {' T; L5 s: y+ d- O/ M5 y. D' ~3 J. B
set-current-plot "Trends-of-Local-reputation"
4 n, N$ Z$ N8 Z! t  Y* X5 W4 U
- S% [( ~; t* n! f2 O9 H' l
set-plot-x-range 0 xmax

0 g0 u" r" ]( q( C* i
5 v' Y# p# [0 ~. vset-plot-y-range 0.0 ymax

" V0 j5 q' Q- B! t& s0 mend3 [1 D+ _+ R3 \8 F) d0 y! v
8 M5 T. K) c2 t1 R( p+ Y" z0 p
to setup-plot2
% r6 @, O3 Y* Y7 q! h& S
8 G, G2 y: x* _! D# Y& |: g. ^' `3 `set-current-plot "Trends-of-global-reputation"
5 d" h- d$ ~& a/ D
' _5 X" k: i( a; z
set-plot-x-range 0 xmax

6 h, J4 T, Z/ X. F+ [& s4 v: r9 X
. i0 ?/ c% G* V+ u6 X- Lset-plot-y-range 0.0 ymax
8 f# N" F' y9 }+ Q
end/ r8 p& _3 C( X9 O  a6 @/ @: u

4 W0 E! r" T5 T2 Y7 Z7 dto setup-plot32 Q& `& Q* j( S" R! [1 z* G& \
* E1 D9 r6 Q. }
set-current-plot "Trends-of-credibility"
* C2 c% Y* Z5 a1 ?8 u( a
+ z: x+ p1 Y7 a# R; T
set-plot-x-range 0 xmax
9 S' F- @5 Y  j/ P$ Z* n

8 e' b' E) {* Vset-plot-y-range 0.0 ymax

7 {0 b! \6 n, |* ]8 c6 l" L9 Yend
! `/ S1 ]1 k4 l+ W
* C8 c& B8 N- Y+ ^1 r! i4 hto do-plots! w8 z- p+ ]  q; c! b; ?/ F
set-current-plot "Trends-of-Local-reputation"
- m1 _. ?; }* q8 rset-current-plot-pen "Honest service"
+ X* j2 ~: m: u1 Q: a1 Vend
9 r$ d7 A1 ]- ^' K4 i$ \
/ c5 }" ]# z% F- ]) i& N[ 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.
; |4 U" m3 _( h0 S. V1 J- |3 E  T2 {1 N# `0 b+ G7 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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