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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:, G( e% i) T' W2 ]* P
to do-business
# l9 L9 j' D+ V rt random 360
- O* Z, y2 g1 T9 E& G, w* I fd 1# O$ J  P- P- \/ n% t. s
ifelse(other turtles-here != nobody)[
( K1 `" Q4 m& f: a" p# G   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.
  ]1 L3 e; @3 |   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    9 B6 o& d& |7 o) B9 i
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 B  P. {2 m; c1 |. {
   set [trade-record-one-len] of self length [trade-record-one] of self
  n' H+ n  y; n2 b2 Q0 r" `; n   set trade-record-current( list (timer) (random money-upper-limit))
/ i6 ^- P$ c: _1 t- f( s. ^# q8 t0 p% G  O5 D0 ^8 ~3 Y
问题的提示如下:
! w+ h- a; l' G, V/ L4 S1 }
; x, @7 a+ A* L( k5 Z/ Eerror while turtle 50 running OF in procedure DO-BUSINESS8 c' w5 ^- K+ P. ]1 d1 l
  called by procedure GO+ X. \2 N9 e4 ~; o, P6 p% u
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
1 p; w* o# ^/ Q$ w
(halted running of go)% \' T0 p/ Y9 D5 w0 w& Z. v
* [& y, ?. {2 h3 O$ o7 C; q
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~~
2 O0 w! K% U0 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' B* |- a. C- }) _: u# h5 ?( J
globals[
4 b" t7 o9 [# `xmax
' B4 I; q' L0 A8 O, ^- jymax
" P/ T6 b/ r4 V2 i  B1 u. zglobal-reputation-list
" |; Q4 l, H! u2 v# N
. w: _3 T" O' |, w9 v, ^: l;;
每一个turtle的全局声誉都存在此LIST
5 h3 x1 }$ E( t9 @& f, |6 `credibility-list# @/ g9 f+ T2 p* {/ m( e- x
;;
每一个turtle的评价可信度
& p6 T% _( [/ V+ c$ s( J6 ~" [honest-service, f( x9 d2 j# j% `$ ~: w7 ^
unhonest-service
  i! y0 }$ P6 [0 B' ^5 ?4 s4 \0 U0 moscillation
$ J# n7 W& o+ v: K- |$ Arand-dynamic
( ]% D, k, ~* B" z$ n]" |) ^5 c0 q7 f2 o* P
1 F) u/ v+ q" t# p4 J7 _
turtles-own[: m. F6 e6 l: F8 K8 G
trade-record-all1 x- {6 K5 Y2 Y* p+ B2 {
;;a list of lists,
trade-record-one组成1 }  R$ X5 V( l& E% T+ U
trade-record-one/ b' `, g1 K" H' u- q
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
- d" y* Y4 w7 \) W0 M9 M: i; B2 A3 P+ M
;;[
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]]* F0 z& y& T$ y# \, n- `
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]
1 |- u& y- E' B8 wcredibility-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
2 c2 J8 C" a2 i7 Z' P+ Z5 Y/ g7 sneighbor-total: k9 V7 e, c. Z) T* C# F6 X4 j
;;
记录该turtle的邻居节点的数目$ t! E1 h# h3 x( W" v
trade-time
! Z3 |8 \" Q+ @# ?" {# r, e) H8 _;;
当前发生交易的turtle的交易时间# a$ R. N% p6 h( _8 `; f4 v7 R
appraise-give  h6 r5 l( ^3 Y& ?3 |' |/ N
;;
当前发生交易时给出的评价+ L  I- }" E5 f6 z- {
appraise-receive& C: l# ?5 P1 N/ O- M- }
;;
当前发生交易时收到的评价% U0 z2 N+ a( ], ?
appraise-time
+ \- W# `2 |: ^;;
当前发生交易时的评价时间: y9 I& T0 S+ ~0 [0 f
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
0 y2 H/ ]: L* Y6 }trade-times-total; w( |! V& [6 S( M, f3 q2 S
;;
与当前turtle的交易总次数# @7 B- J7 c" B$ s% N% L# r) `
trade-money-total
9 h8 A1 _( e; i: f! s;;
与当前turtle的交易总金额9 U( M; I+ J' j& b2 ^2 d$ d
local-reputation
" J* o* w) V* r6 Y/ oglobal-reputation
5 F) f  d2 z2 J, t3 W; F9 Fcredibility
& w* r! k  o1 o! _6 t* C: O;;
评价可信度,每次交易后都需要更新
7 _9 L  H7 [' x% d$ x0 c. ^credibility-all
' [1 {2 t! m$ g' V) b;;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. O; z. E( j3 g# n3 H! Q

  z1 N' e& y& i* F4 U;;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
+ C% \5 F& H' o: jcredibility-one
/ s0 n# M9 @0 h3 p; {  `;;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/ ^: h. [, O4 G9 S) ?2 Y7 j
global-proportion- W1 V5 X' ]" x+ J4 F
customer- |8 k! W+ H* s. S* Z
customer-no
! ]( a+ e: J/ T; jtrust-ok
" {! k" q' @, T/ c; d9 Ptrade-record-one-len;;trade-record-one的长度7 z1 ]7 K/ J& s# B/ ^
]
. o- u+ Z$ x2 q- w& s+ A, C. v- V3 u7 L) r
;;setup procedure4 U( w. H* X( i' `9 P( i1 C
# E8 i- }( n9 w3 Z7 ?" U8 i
to setup
  |5 V9 I4 Q! {! p0 P* O* E8 f" ^! X
ca

0 S3 W! y" l2 h7 g3 r5 l' g
3 y7 ~/ a2 E# c3 X3 O* minitialize-settings

" b5 l/ W6 F6 \# G$ `9 L7 o( D: P+ ?- ~5 ~
crt people [setup-turtles]

+ s  Y2 {  P1 ~9 x
# v( J; R5 |7 w9 l0 Vreset-timer

; z& `, H7 h! W4 d! a9 r7 N. g1 i( p1 t6 `5 i
poll-class

$ F  _% a$ z7 s. i; ?/ V% g
/ @) O. B0 J9 F% A; a0 I" N! fsetup-plots
# I; g8 H3 D& E1 T6 {5 L& [

# y2 w1 x$ E- e7 d  c7 cdo-plots
0 i+ e+ @2 Z3 F* {
end# h& V' ^, {) e  N  v9 j( `. z+ A
4 r* f" T1 V3 e
to initialize-settings
) Q8 f& Y' f* o, L4 l
9 R* Y+ w3 K& y3 I/ G" M# a4 Dset global-reputation-list []

- J: E$ f; f- `9 J9 l. Z+ Z: _4 R# G. r- o2 u- X
set credibility-list n-values people [0.5]

! s; E. Q' h" ]% Y7 Z& Q$ _9 U% P" ^% _1 L  T* l  z/ \
set honest-service 0

; T+ I/ }3 o/ Q; g5 J$ k6 W5 k% @3 s5 }
set unhonest-service 0
- S! Y/ y  ]( a

/ }+ N# s7 ]6 }3 q& J# |, a3 o( V% h! mset oscillation 0

& ~9 L9 G: H( z- ^- G7 l8 p1 ~3 r' |
set rand-dynamic 0
1 i- t* a! r5 R* \* @& J- `
end& ]% g$ F; F7 V7 `* D

$ X7 C/ n9 T" `9 Fto setup-turtles 1 P# c% K! q% H4 w2 i
set shape "person"' g6 d( b& t: p+ t' R# T
setxy random-xcor random-ycor
1 ?  H7 X8 @4 dset trade-record-one []
; H! ?5 ^* S/ d8 l7 {; a) i; L. O. l

1 _6 F2 C0 I: z, v" U9 aset trade-record-all n-values people [(list (? + 1) 0 0)]   y4 J4 y* J% _/ p

& Y7 D; Q  D  t; j2 V7 fset trade-record-current []
# L& e. }7 m+ @( i) t, g( Bset credibility-receive []
+ D; v* K0 q( Uset local-reputation 0.5+ n, d3 F/ g* I
set neighbor-total 0; E3 a$ X; w% L' e3 P
set trade-times-total 00 I/ y  G+ _- m
set trade-money-total 0$ w8 N: a1 O; T! \
set customer nobody( e: n& U* v: y8 B' y8 }6 E
set credibility-all n-values people [creat-credibility]0 ?0 g, l; c1 p2 d7 W* \% }
set credibility n-values people [-1]
! N1 X- u: b+ |6 y4 g8 a9 zget-color; j& h* i2 M& C
7 @) t2 e6 i7 s$ D
end
1 F& C4 A: K, z, R% m
7 T, X7 H: u+ Oto-report creat-credibility3 E5 ]( F8 E7 \! L  Q
report n-values people [0.5]( U7 ~' D) W* q8 p0 z* H9 H
end
; B1 W& {- x1 k7 x; G  q7 V  S5 ?1 v0 E9 Q
to setup-plots) d' a# H* F' k: O- B6 f
# X* g, h# ~  @
set xmax 30

4 Z* G4 X/ {; A- y% t) c; V$ t9 V% d  z' Y9 q
set ymax 1.0

7 j2 i% a: x9 w) ?0 |1 f/ C, U) ]( T* d
clear-all-plots
( E* b+ b: v: J: Z8 Z' m  R1 ]5 ~
" k# S' ?$ X+ B
setup-plot1

- a# c3 t" q1 d+ Y$ x# B, i9 {9 R) w9 m# {  e. z
setup-plot2

, P1 D$ J$ c- x3 j" f. x9 X
; H' C; Q& R* }' }# M6 Esetup-plot3

  o# {# j6 v% a& i  J# Fend2 D" R) A! ?! ^

9 t) g% m) Q# m) Q, n% E3 T) V9 M;;run time procedures: C: v. r3 ]9 b0 y5 Z
: v1 I, L' x, z1 F/ c4 M
to go! [7 E) J; A. x/ y/ g) ?) s

; t- Q- \! F! k# Q8 Rask turtles [do-business]

) D  y! V* g4 T' Z% g& Jend1 o* v1 c# s, n0 S( M  J

! ?7 K4 l6 s" q9 z  W; o( `to do-business
7 e9 h# E5 K# T. l8 G
, j7 X6 ^# ^! u- C' M% C

. O, b; V) J/ C; r5 F6 L8 Mrt random 360
) I# W5 o. j# B1 C% S$ ]
5 o( G* a/ |6 M- [% K
fd 1
7 e. M# S. P; p' t( J

3 o- B" ?; N. M. K0 zifelse(other turtles-here != nobody)[
3 `& r" W+ U# K- n5 z# K
" }5 {2 d. ^4 ]- R  n, J
set customer one-of other turtles-here
1 @' m% ~7 U# ^8 w( N5 A. t  m

; X& U( h% v; f;; set [customer] of customer myself
0 `; G2 [) ^, v, Y0 m& T
' ~, `+ N7 h% k, m
set [trade-record-one] of self item (([who] of customer) - 1)6 }  ^& ^5 v3 o* j6 E/ Y
[trade-record-all]of self2 f; m) J5 j7 @( R7 M( Z1 Y
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

! D1 H, {& x+ Q( G4 s* [/ |3 D* ?  d2 e$ \
set [trade-record-one] of customer item (([who] of self) - 1)$ Y/ |2 z; R1 ^& U
[trade-record-all]of customer
) E( t5 E4 a* {/ z9 ?6 [
7 k, u  L# t+ ]* ?+ Q4 a
set [trade-record-one-len] of self length [trade-record-one] of self

" k! w* _/ r$ v  t# ^7 k
) a9 C8 ^1 H( g, l3 ]* G/ hset trade-record-current( list (timer) (random money-upper-limit))
- @, M; B. p# Q9 N+ H
0 t) Z9 n! T) y5 N$ M" c
ask self [do-trust]$ ^: R/ w1 F: t# |1 n7 K; U
;;
先求ij的信任度; h$ E. I% y/ I- U

7 k  X  t/ b# g* Jif ([trust-ok] of self)
$ t3 `8 j3 d; N;;
根据ij的信任度来决定是否与j进行交易[# a( S, _7 Z1 j, i
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
5 H: k& ~/ U+ r7 F% n
: P" [) m9 Z0 Q1 k+ n/ D7 A2 i8 y[
: f! V. n4 X. m$ l- q( ?
- ]) Q% g! ?& t# P; @1 c9 O" |
do-trade

4 E* k# m, q) B
: o; ^. E3 d2 e* |" t' _8 ?" D! u+ Supdate-credibility-ijl
2 E1 _7 A. w0 c1 @* e
) f9 {" N& V) R+ N5 S4 k
update-credibility-list
6 H& y9 y) R* ?) z* e7 ]/ w3 F* T
3 `3 N5 C1 l* ^: v' u3 I1 M7 f
( k" E7 G; J6 y  |  x9 I" A
update-global-reputation-list
7 k% W% \+ q# Y7 z5 P

* [5 s* Q0 Y' V' }0 kpoll-class
- x: K4 x$ j3 _+ Z! Q

) Z5 X2 y$ N: mget-color

5 l0 f" Q2 [" I2 y9 r' ^
1 T! y% ]' m5 c5 n8 ?- V( N]]
7 m+ |$ Y2 ~3 X& n% r' C  S9 R$ `2 m: d; ~4 n- r+ [
;;
如果所得的信任度满足条件,则进行交易& _2 ]! y: J$ o! f* A

( I+ L/ W5 u1 b  Q( r9 q[
1 @% y! @: Z1 r( I. d

% N' {" b6 R& Y3 t' zrt random 360
3 o* b. X, [5 F; S  J9 R

5 S) r! J  _) b- F  kfd 1
7 f9 s9 Q& o/ ~$ D3 A; B

! H& w: p# A, `  i! [) t, `]
4 \& {; I) N1 g
( P* ^) E2 e6 H* M3 T
end
7 {& K, ~4 f# U$ m; X# n8 v( r
. n; m+ L. D! m) ^
to do-trust . ?6 K% H  u: k# L; u
set trust-ok False8 z# p( }% O$ @  T* y
2 u- x" N% |0 ~2 k# x! j2 |

. m2 V! a1 L) ^# W, z7 L5 Slet max-trade-times 0
8 R. _3 J1 `& D' yforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
9 A5 D5 O" k- _& U0 a0 }( [# \let max-trade-money 0" y( g5 l  w% k" g- v+ Z
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
: K" A+ l! ^/ J8 klet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))+ ^7 E: `& F: |( {5 N3 S
% |! f0 m% F0 ~6 Y, ~  y1 S3 u
' x- a# k1 R0 j( B
get-global-proportion
) S( J" \, m, N$ n: {* Klet trust-value
+ L% T3 Y, z" w% z* q) Olocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

* I5 X# Y) p: m; Bif(trust-value > trade-trust-value)" s8 D) I# p  ^1 Q/ u* W
[set trust-ok true]
+ M3 b1 h' o7 U3 X" S: n4 d+ Uend
7 u  S1 ~! ^) b9 x0 c5 v9 ?5 [: b
to get-global-proportion2 ?* l# v2 w4 r# E0 H4 s" V
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)% Z: z6 T0 Z1 [& _3 J
[set global-proportion 0]
7 G3 X: r3 }1 u' w[let i 0
# Z* _3 g( L  H* Ilet sum-money 0
" k, l- V) V0 A: D5 [while[ i < people]: h; _) v$ n0 d( {
[# w) p7 B8 d! f+ c& `  G9 J! ?$ ]
if( length (item i+ c" A0 Z, V2 E- k
[trade-record-all] of customer) > 3 )
( I& [) u2 ^: O
[
' l* y, O# M$ ]2 m  Z: k/ @set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
5 Z2 h) M' a+ i3 }4 @( S4 k  `]. J3 T: u) \" q# p: N
]
/ r3 h8 d8 I$ i0 w7 B( V' A) _6 Vlet j 0) D& N0 B: R" b* v9 ?
let note 00 X3 E' a0 T, c& A& y# N
while[ j < people]) c" G+ R1 |. Y
[
0 c% h* U# P/ k7 z( P) vif( length (item i+ \1 `$ ?5 ^% |# e
[trade-record-all] of customer) > 3 )

6 [/ D8 g$ {5 t4 Y' E[8 i0 b7 E& P( _$ \2 t
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
3 ^- f: M* {' O[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
* c$ {" b3 I; v6 F  Z[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]6 T) C6 b# W/ r5 m; K
]
" Z* w$ P8 a! []) ^7 G; v9 c' f- I; k$ w
set global-proportion note
( o2 U" b/ V6 N- f. R7 W]
! [+ C' g# [# z) rend
  Z3 L( m2 @) a+ e3 r( O* C( F& }0 E, v, D/ m: w
to do-trade( Z6 U; A' T" _/ I
;;
这个过程实际上是给双方作出评价的过程, w6 P/ \% W8 @
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价4 Y2 M; b  @1 [1 I" ?( K  ?: `
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价$ ?' ~3 M" i$ O- E; Q5 q4 f4 l" p' Y5 s
set trade-record-current lput(timer) trade-record-current
7 F& \* q  ?" {! p/ [;;
评价时间6 g3 q, T7 Y0 ~( K8 i
ask myself [
1 r$ K! @  }/ Y5 |( _! Jupdate-local-reputation
- {4 g5 X9 t  t6 Xset trade-record-current lput([local-reputation] of myself) trade-record-current
/ u) S6 D0 P3 Z- W+ j% [  T# a]1 K5 c- y5 s2 W, Q* d' j0 W4 C
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself1 h6 c# b  K. I. j8 _6 z
;;
将此次交易的记录加入到trade-record-one: N0 G  _9 G) X# Y9 |1 s; ?2 I1 d! ~
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)+ d& k2 `$ X; e7 k! X
let note (item 2 trade-record-current )
# ]& S. e; H- {- nset trade-record-current
5 q5 o1 W, O( o(replace-item 2 trade-record-current (item 3 trade-record-current))

! A6 K2 |. T8 q7 w7 l% F' ~set trade-record-current
( `8 `  y. F4 H; B7 w- d4 e(replace-item 3 trade-record-current note); z9 ?2 U; y% L/ _- ?6 |% M
9 U) `: M6 p! }, ^) K' [
% h& `9 m! R2 Q6 d
ask customer [
* V# m( Y* m3 K' [update-local-reputation
( r4 G& h1 c1 \' s5 F, P' jset trade-record-current
# Q7 `: l! I! m# ~# r(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
- U- o4 P2 J% ~0 z7 o
]
0 ?$ T8 ^) {- ^* Z( {( w" W& Q9 v, K. Y

- Z" {* V* {8 k  h% ~* m. mset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer# P( }2 v8 J  }1 t/ J4 G! M

5 w+ K- I' M- J1 H, w; Bset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
3 J2 V  s! M1 e" o3 |;;
将此次交易的记录加入到customertrade-record-all( X4 P1 c! T; n  ]& U- E+ y2 S& Q
end" e' X4 ?% A0 N0 J+ ]* U$ h
; s" u- _) W2 p
to update-local-reputation
: D8 n: Y5 R, o1 n8 |$ P6 Zset [trade-record-one-len] of myself length [trade-record-one] of myself+ O! i9 I  r( c8 }2 @. n% Y' U

9 V2 ~0 K2 H& x5 H! K1 F0 t' Z; k9 F0 D: u
;;if [trade-record-one-len] of myself > 3

2 H- E+ W/ F3 N1 x: y; y0 b1 Jupdate-neighbor-total
; u! v% z# {# L' v;;
更新邻居节点的数目,在此进行
# F* L7 L) `" x# {8 {* @let i 32 w) y: ?- B8 }2 ~" V) E5 Y. N
let sum-time 0/ }& E6 ~( p0 O0 W/ B2 T: v  W3 }5 j& H
while[i < [trade-record-one-len] of myself]
$ p: O0 t: x7 ]8 L$ S. ][
4 x! H9 C4 `0 `; _set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
# l: e1 a6 X7 ^# O9 H3 ?; v( l+ tset i
" i. b; f. t5 T0 J5 [( K2 q( i + 1)

2 G3 W: i  l; g& q8 ^3 H]( Y) K$ ]4 N0 E1 U
let j 32 P8 U: l- w: Q7 W* h4 j8 H, k! E
let sum-money 0
2 e0 |  D* g5 F4 wwhile[j < [trade-record-one-len] of myself]+ f! c+ Z* L+ |1 k& {! c
[1 i3 E" W$ c4 e: C+ f6 V
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 E3 }  X; d  F0 s" N. z! f
set j. h' f+ h9 v; ^' @
( j + 1)
" q7 {* R3 N8 S$ }0 o- f6 W
]
. [' u+ k( r9 ylet k 3
1 u8 {5 S( h  ~3 ~let power 05 c' H. b4 b( P+ C- G& U
let local 0
# H/ S- p9 S4 F6 D" n# Z& D# xwhile [k <[trade-record-one-len] of myself]
, P, P2 M% t5 W( C[
1 m- [  q( _6 s! k8 G! Vset 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) 4 ]  D, k) ?! n3 h
set k (k + 1)4 I2 M" Z6 d: y2 L1 u" U
]
1 d0 r; m+ B3 n# }) n! ?/ wset [local-reputation] of myself (local)
5 t; C: U* T: n$ ?, P! d! e% Cend
' o7 D- }$ X; g) a3 \1 Q: v( S: i. k) Q" w
to update-neighbor-total
+ ~8 A' Q1 q/ X+ m/ ~. S2 I$ h5 V* M# j- r7 U
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]  k+ o9 p  ~; |

* g* x+ Q$ e% ^
* o0 d6 I: C4 m+ \
end
9 S& L$ g. U. H/ [# j, D- Y/ q+ Q; i. e; A
to update-credibility-ijl 4 H& ?4 x4 ?& Z  _7 h- Y
9 i  a0 f! c/ D! V) D& D) J* B; T
;;
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。
( f" {1 ^1 r* t+ `  flet l 03 i% n0 A& w7 C7 B$ J/ T9 y
while[ l < people ]' b: C4 R& ]$ G, Q
;;
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
* X) _7 V2 l- s! ^% Y& u* y$ G0 B[
' k+ d/ ^! D2 K+ _- R, Slet trade-record-one-j-l-len length item l ([trade-record-all] of customer)' |+ Q3 t. {' {0 D4 [" O! Z
if (trade-record-one-j-l-len > 3)
& o. U! A" E2 E! g5 ][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 J+ T! y! blet i 3- w0 E5 V. O+ d! [5 @& K; z, T
let sum-time 0
& j0 v5 r) C2 i  M$ I+ \3 j# mwhile[i < trade-record-one-len]
9 {. i6 m; \/ _: [[9 h7 i. n; v& o  U: J1 j2 Q
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )8 f4 \% M- a+ c: F- ]4 R4 u
set i6 q" u3 U$ K4 `; e, \. J0 F
( i + 1)

( {0 \2 u$ a* I3 d& y], [! s. D# I5 K/ c7 M6 A: x# M6 J. A) C
let credibility-i-j-l 0! ]/ O* \: [1 p4 p
;;i
评价(jjl的评价)# @7 M1 @# U7 I7 P" X* i
let j 3
9 D* _" u% ]- ~let k 46 k* r# z3 S- C5 X2 V! K2 c
while[j < trade-record-one-len]
0 Q8 z; Z, Q$ F5 b" z3 n& Z. ]3 l" _[! w  W% W% o, W: V9 P
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2 F0 ?5 v9 i6 a5 N- r6 n2 X" P
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)! S" M. Q7 i& N
set j
* F  G" H+ J5 o2 _( j + 1)

# Q/ i2 }$ P7 n]; e9 p: M* h1 u+ V& l3 {7 b3 w
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 ))
% M/ j: E% g. I; M" [) O7 ~5 {6 G6 H) ~) ?  q. r3 p( [

9 p1 a( Q' X/ x+ T% a0 Mlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
9 O5 b/ r3 ~. Y" g;;
及时更新il的评价质量的评价
, z! ]$ M' b+ T$ v: D% Q6 F9 d1 I" F/ pset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]) {7 v  X( m. }$ ]3 V% I
set l (l + 1)
7 x7 |2 q0 C. a0 q+ B3 i]
1 {8 p4 U/ c3 w* t. e( C! F" s6 G9 jend! O; Q$ z  ?1 u( s) p* ~7 L9 z
9 j- o* R2 K' v4 k4 S3 }" O
to update-credibility-list
$ u  \8 V3 m) f, O! ^let i 0
8 s- Y# e' [. E( mwhile[i < people]
/ I- k+ o9 }. z" D' z' A9 J[
% R% D! Y  M, U+ ]2 C  Olet j 0
3 H8 `  h  d7 K, R' qlet note 0+ `3 K) U1 C9 a8 c8 L' m
let k 0
7 h# m. T4 o3 O. n;;
计作出过评价的邻居节点的数目( w! }# [( i/ [0 Q( O- `! H  Y$ v
while[j < people]
7 V( ^: W/ `% U4 v9 m% `2 a, R& v[- r, H1 Q& o) j( ~& C! S
if (item j( [credibility] of turtle (i + 1)) != -1)
, _* \( e( j$ @;;
判断是否给本turtle的评价质量做出过评价的节点: ]2 o  I1 [" X- u6 H* U
[set note (note + item j ([credibility]of turtle (i + 1)))
  l; x  V$ o: s7 F;;*(exp (-(people - 2)))/(people - 2))]
1 a& ^6 V0 `1 H8 u! a6 ~7 T
set k (k + 1)
: q; ^" R" n8 V. x, C2 p]
- T& C1 X- i; L. C9 p0 Uset j (j + 1)
; @# V+ u% u0 `& ]; Q& p: @' e/ j  C]8 E0 M3 B/ c/ s, U# j( Y7 f
set note (note *(exp (- (1 / k)))/ k)! G+ H# O( E1 g. x) |, K1 j; B$ l
set credibility-list (replace-item i credibility-list note)
8 m+ }3 r" f4 V$ N* Q+ Cset i (i + 1)
( m, U. k. K0 m- E], }" b: |) P: ^2 d9 Y
end
0 {8 K' p# I, O7 b2 \) F% G& u3 E
) W4 J5 D$ w+ ]/ K8 q. Qto update-global-reputation-list
+ T  G7 W7 `9 Jlet j 0+ X& {  d, o/ I! B; h
while[j < people]
- r" D1 l# N& a+ U1 {7 m: l[
5 g) P, ]* T+ R( Plet new 0' c1 z1 G0 P# ~- C1 |. V
;;
暂存新的一个全局声誉
5 A5 u' p5 `4 i6 x  Y! jlet i 0
7 @+ e$ }! N& d, ilet sum-money 0
" c* O' n: s2 {2 Q7 N2 x9 L. L- Jlet credibility-money 0. k  ^# b( S; Y& I$ i' g
while [i < people]2 }3 L( m4 z, s8 v6 y
[! Z- ^' Y* G$ @3 D9 L# J4 u
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))6 L' j8 J1 u' m/ \
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))# ]- L$ E' m# y4 f
set i (i + 1)
9 f' M, P8 |) _], F' a. K" O/ w7 P# r: t* f# }
let k 06 }; D- G; A! F( y& S2 M" A8 R. I3 d
let new1 0
% o5 \" R$ Y) Hwhile [k < people]
8 q1 j( y6 {6 e; z# V1 A[  v: w5 J/ r7 R. 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)
" [0 x7 y& h* dset k (k + 1)
) J+ A! `9 }+ H' ~]
% o+ X$ r( p/ I1 ?( T$ ^: }, }set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 5 j$ u- w. a4 U- z; A# d  m
set global-reputation-list (replace-item j global-reputation-list new)+ K9 l$ y+ w! t9 w- Y
set j (j + 1)8 S. R  Q% T0 J" K3 r% f5 e+ ^
]
/ N4 B) M' Q  [: ?& J: p; mend! {  ]# x, j- C* e; L+ M

: i( j- K3 E5 Q8 s4 V* t9 q4 L, V, X* Y0 v) D

$ x. L: T6 f! U* g% qto get-color
9 m2 D' F1 g+ j+ X: w. O& P
. M1 v$ Z+ C0 X+ ?set color blue
/ V7 T. a5 w# |. _. ~6 W
end2 W. M; e) L& \) ^9 \( k, G

) @+ ?  `3 }- u; C1 X- c( a: rto poll-class) r- o, ]. r$ X$ I
end; \+ j* ?1 `4 Q& n" w

% T- G& L/ n/ H- Tto setup-plot12 ?; a4 ]5 c% m, D6 C- v
5 J# G) U6 }3 n
set-current-plot "Trends-of-Local-reputation"
/ D9 [0 z, }* L

' [- {' m  J) O/ A5 g' v" j2 Zset-plot-x-range 0 xmax
/ ^, Z' i/ D: {) B' S

  B$ t; y) j+ M$ i7 aset-plot-y-range 0.0 ymax

6 u" {5 U; N9 m- j/ t9 Lend6 f' t( P; D) n+ ^! _0 i0 z

3 \5 I7 q) W* h/ G/ L; K0 eto setup-plot2
+ O( m- t$ X" N: J- M# _9 R# f0 Z; X" Q/ U
set-current-plot "Trends-of-global-reputation"

. M5 n5 \+ X2 {2 l. K2 e9 G- o1 m& W! j- i" p" O& Q1 ]; P+ Y
set-plot-x-range 0 xmax

: @' e9 a4 R8 Y( Y' j+ n' J3 w, K5 i$ ^4 d! N5 D1 j; d, o; t/ K
set-plot-y-range 0.0 ymax
+ F$ u" j' @) ~6 L
end
/ _2 I% g5 X4 C. W7 `
  n# D2 q% v, L$ u9 Gto setup-plot3
# Z4 A, t# e' j7 }. M8 ?! d7 M  u  r- T3 {0 R
set-current-plot "Trends-of-credibility"
& t0 Z/ A' Q! m; ]4 @

" n+ p' e" n+ }; V9 ?# `set-plot-x-range 0 xmax
  e: M" _5 V# N; A
* K; W6 }7 Z3 `$ C
set-plot-y-range 0.0 ymax
1 M9 |9 j2 E: F1 J* |4 V
end
' J1 A5 h3 `7 }, r- }3 I( P$ f; c$ |% s+ Y0 b. S7 w. p  y
to do-plots+ M  V5 B' Z8 _
set-current-plot "Trends-of-Local-reputation"
% _/ z. [# l; g3 |( v/ Jset-current-plot-pen "Honest service"0 v+ }8 M; Z* z; ?
end
/ r1 T3 l; r7 e& T2 V! n
3 `4 O6 J# C( E- z1 g[ 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.9 n; s; p9 t& J4 y6 _8 I" \

' a. q# {7 j( X9 S/ ?- r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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