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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:1 A& X# L! f+ H( r3 n/ t
to do-business 7 L" x$ e, @8 m* L% F. \+ u
rt random 360) h8 r' W9 t; i) y- @
fd 1+ G$ U3 L  _7 N1 v: n7 _
ifelse(other turtles-here != nobody)[
0 c/ ?" x0 q0 |: d$ d' x   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.& L4 W/ p$ t) r2 r( C9 i, D/ A5 y
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
! v+ `( L. j0 O5 Q% H   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
. x2 Y$ g. ?+ q2 w! W   set [trade-record-one-len] of self length [trade-record-one] of self& q- h7 D- ]/ p$ S& C( |( s
   set trade-record-current( list (timer) (random money-upper-limit))
8 m; p3 Q" V0 Y9 b7 G1 t. D
/ h* F! D2 x  E; j; j* s$ B问题的提示如下:
: {8 X5 [" c) i/ p& C3 M
6 H9 Z. F; j# g  W& y8 f+ n) U) B- u( Verror while turtle 50 running OF in procedure DO-BUSINESS- n/ V& M6 Z% v- C% ]
  called by procedure GO
1 x. \1 F. p$ L2 p1 T# H: vOF expected input to be a turtle agentset or turtle but got NOBODY instead.
' K8 B  P& [  [6 E/ m  X
(halted running of go)
* I1 W% H1 |8 @0 O, ?2 i  q! T% d5 D' P$ ]) J. |% M! T' X, T
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 _9 Y3 z% w, g
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/ z6 X, ?% z5 |6 E& M
globals[
& A2 N0 s; u' Q6 ixmax
! @( E+ k, e6 {  Zymax' \$ R8 G/ b3 N) q* i# K! c$ G
global-reputation-list. Z. i# V7 p8 m; b

4 v( G4 U. z5 @- ?  ~% `' p;;
每一个turtle的全局声誉都存在此LIST* _' C! D2 a8 X# k
credibility-list4 t9 c1 _( z" }6 l
;;
每一个turtle的评价可信度
* r1 s! B3 y: k8 |$ O+ u4 n' |honest-service
$ A' R% b& q- n# xunhonest-service
' ~! U5 z% n$ K% R4 a4 ~oscillation
" |$ Y6 K' |9 T( y/ Qrand-dynamic/ E* h0 F4 q$ o
]
0 @( c+ d# R- C# \/ v* h$ T2 R4 E) _+ J
turtles-own[2 u5 y: @. A/ }% ^4 s
trade-record-all
; a* ?2 L. K) t7 ?6 @9 ~;;a list of lists,
trade-record-one组成
8 a  H- j6 Y5 x8 R" ?trade-record-one; f" L# b( R: K) Q, ^5 K
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录7 G( \  \# G8 ~- U0 b! k' k: ~9 _

0 m! S, [8 A/ t0 `" H;;[
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]]
. ?/ K; m. `( F9 P! Itrade-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]0 `3 k- F% @" o1 M  [; k" B
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# C7 p8 K0 L) ~- Z
neighbor-total
& I9 \4 w) C" q+ P& V; y;;
记录该turtle的邻居节点的数目
6 ~4 J' ]- X9 ^) jtrade-time( {+ {) o/ T& E& z! E
;;
当前发生交易的turtle的交易时间
( x* I2 `) y, c+ {3 I. K5 Vappraise-give9 q( h  J8 K3 [
;;
当前发生交易时给出的评价0 O, p6 O3 S3 r% {8 K
appraise-receive- _& s3 K, `" b& k
;;
当前发生交易时收到的评价0 r6 x! z% B* a# D6 K6 q
appraise-time
0 y$ t6 S2 T8 Q, b% Q; S+ f. S9 n;;
当前发生交易时的评价时间
2 a9 e6 \4 H+ llocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
& l) R* ?% p, a1 R% M, Wtrade-times-total7 r# ~$ d6 a$ V& t; q3 r
;;
与当前turtle的交易总次数
4 P4 i) ^1 @+ V# jtrade-money-total
" C" ]& c+ j  l;;
与当前turtle的交易总金额
- o  B, x- \" Y% r0 c1 G3 y3 Flocal-reputation
( l5 m4 ^: g8 o" m/ _% cglobal-reputation
& n, d- C, h, J; R/ q7 dcredibility+ C- B( z5 t( E; L
;;
评价可信度,每次交易后都需要更新$ [# R: R+ a; \7 U& o
credibility-all
( T: W5 F7 u) D; \2 ?( F  t! D% v;;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
5 }3 X. \: [! H4 m
' s# ~, P+ h7 P& W1 D( F;;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
' n9 v6 H. ]( I+ @7 ^( qcredibility-one# e% y' e$ {; N1 |0 b6 e0 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% n* |4 O/ t7 @7 c
global-proportion) p) b2 ]- ~: d! N5 |5 N
customer
. c2 P. E4 j- o4 D. h" vcustomer-no' h5 |. S7 P& y0 [
trust-ok
* m& {6 ~& x  b8 Mtrade-record-one-len;;trade-record-one的长度
% B5 }5 \' k$ T, X- }]
  e9 K' G+ w: _
9 g. ?. ^9 G# Q& k; h( H& U+ n, L;;setup procedure
6 l! K7 X# B1 \; F( Y
( y0 Y- T. u3 p7 ^to setup, `' T- t% j# `7 O4 Y8 I) b
4 f, M4 w, P4 \6 n0 @! D8 O
ca

/ ?9 P+ E  ?  P9 H
- h4 ?- d( Y! @1 V4 ainitialize-settings
7 x6 M8 E5 x; g1 x- b& s: S! j
2 |0 @' I9 ^. X2 N9 ]9 e; Z4 F( f+ p! q
crt people [setup-turtles]
$ p* X+ K# t, M5 ]) h

) `0 Z, [* r) U& N9 o- Areset-timer
; [* }5 i: X! ~: _/ k$ G

3 w$ p9 t9 E& p3 c+ d! A' X& kpoll-class

2 B/ h; v/ c) D, i' \  j
9 a  Z$ ^* {! V  B* i: w- O) p! wsetup-plots

; O" e! Z1 C4 A+ T: Q0 r% X: h0 X6 j2 X- |% \
do-plots

- v; p) y' ~0 {/ Mend! O' z9 z" _* v" M% V* b
$ u2 J# v' R$ {9 t* X/ [
to initialize-settings
: i8 d( _$ s" c' J- }
- ?  d- H; G9 ]" m% B: Lset global-reputation-list []

7 d( N. U! f) j, z1 ?
& ~) Y7 @; Y5 E3 Eset credibility-list n-values people [0.5]
: c% V, M( d+ w. {) r$ O0 Z
# F+ d& S, J  E: s% _. G- w
set honest-service 0
0 q0 l& ?0 z8 n- X
# d7 P% G  o; _: C; l4 t8 {, E/ @
set unhonest-service 0
! V. D% K9 N5 X9 u+ r

2 X4 F8 z4 Q- \% }( `. Z! k7 Qset oscillation 0
  ?0 Q. T& k& W1 ]- Z& _
: _3 c; x4 {; R% }8 ]( A
set rand-dynamic 0
% s& N: z* A% ~5 b
end
# }# I3 |' o4 r# I$ g; u
* t/ T, m3 c3 c) g$ Kto setup-turtles
0 ?5 L' ]: ?1 ~set shape "person"
; }: y) f% j& T8 g4 D9 }% }" T. _setxy random-xcor random-ycor
' p$ w) `9 Z% u, G( s: o- `' W/ qset trade-record-one []
4 \3 y3 p' Z* \5 |
/ u9 s( f- ]" r/ g5 |# G7 e
set trade-record-all n-values people [(list (? + 1) 0 0)]
- h- U) N' O" j8 J: ]
0 U# S8 B- r1 t# v
set trade-record-current []* e4 s3 G2 K" F! e3 r2 k; S
set credibility-receive []
& R" f6 M. Z! o- [2 @$ J8 L- vset local-reputation 0.5
  Z, A/ B3 G, w! C* m& U" R1 cset neighbor-total 0
8 d& @) U( m- l* `5 |: rset trade-times-total 0+ ~3 I3 O7 G  H9 \
set trade-money-total 0
/ R' q3 j+ y5 P8 X$ `set customer nobody5 `( N3 [- ]. N& U" p7 `- k4 \- p" x
set credibility-all n-values people [creat-credibility]
7 C, d& |9 @$ x" V7 s5 a- e6 Tset credibility n-values people [-1]
7 i; k: M- t$ e0 @7 V, Pget-color
9 a$ N, X, B3 `6 N6 m( B' l

8 F7 O5 A9 t3 E! X! H! a0 {end
( G) h0 @/ H. T# `0 F% |) [4 B$ P) o, E& D  b
to-report creat-credibility
' n2 a' D, p3 J7 A6 K& \3 Kreport n-values people [0.5]
+ r4 m( v8 w9 y1 Bend- p+ L5 @4 ?3 o# n  I) t
+ P: [1 E7 w1 R) K
to setup-plots5 u6 c% o' {0 T7 P. \
! v' s2 H1 }7 C% ^9 m7 {3 ?
set xmax 30
) E2 N3 U. w  b/ Q/ `: O6 y) x

7 s2 V/ L$ n  d/ `: N0 @( N8 uset ymax 1.0
& H: h( e* ~9 e) `: l
/ U: i# Z. k& K5 n
clear-all-plots

4 k6 Y5 P5 G* z9 B: g3 `4 F
" J0 y9 S0 m; L; @setup-plot1

, R' c& l0 `$ @8 y# B( {/ u( r3 J% Y# Z
setup-plot2
9 ~9 X4 l; B9 Z6 s  U

: i% J' e6 H& w; esetup-plot3

+ F& O5 M% L2 v* Uend
  R3 r4 B; i4 A
4 j9 U' L' W% u7 }" [5 Q) a;;run time procedures/ X  I: E. h2 r" L

8 o7 N9 [0 t. B4 M& _to go3 q: f% Y' C# U7 F* W
: [6 u& L; O1 A$ x; ]
ask turtles [do-business]

; M! E* i7 q8 E& r0 fend
* `. m5 b3 F: A& r9 d7 d5 T  m- G
5 G- J6 P9 Y! S6 Eto do-business
8 n! ]1 D# a- |. o
! V9 c" Z: A' s+ x1 J+ \+ r; I# P' o

/ C, y. j' F, ^+ \( frt random 360
9 \7 z. R* S9 G; ~( ]0 ?* f
3 r$ O/ f; ~5 K4 Y
fd 1
1 a& ^+ X  D5 M( Y

) g" y$ C3 \& ?# R2 O. Aifelse(other turtles-here != nobody)[
+ j7 S  ^; {" F! F  m9 X
1 g  N/ J7 V' _  m6 P
set customer one-of other turtles-here
, g& L* e2 i/ v. ?/ z* ^! t$ C6 i
2 n% V' g( r4 Q# h  b6 T1 E
;; set [customer] of customer myself

  l) H6 n# B' `. n/ _" G# O" Z; s' t7 F: U# m5 n
set [trade-record-one] of self item (([who] of customer) - 1)
. c) I1 I( F& m4 d[trade-record-all]of self
  y7 |, y: {! q* L# `+ X8 O9 @;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
2 q4 a- Q3 b' q5 [
! p! y  O0 r' M, O% @  E
set [trade-record-one] of customer item (([who] of self) - 1)
0 m$ B- w1 L, G# P5 R[trade-record-all]of customer
% ^: u9 ?" l6 m
, X6 r1 n! V2 s( V
set [trade-record-one-len] of self length [trade-record-one] of self

% c/ i& l. \0 {2 h% B, c
; m9 G" r& L4 [( e' G; Dset trade-record-current( list (timer) (random money-upper-limit))

! x1 ]( g# L0 G& u0 @3 L+ M% Y: \- a( N/ t, |
ask self [do-trust]# B7 d. Q3 Q1 k: @' ]
;;
先求ij的信任度( _- ^, @- ?1 P. H0 A
1 {  k. g7 D- b
if ([trust-ok] of self)# w* D! F( ^' `6 A/ H/ v$ _
;;
根据ij的信任度来决定是否与j进行交易[
. P0 l; r& m: R- F# {& yask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself$ k' u' r( q% C- U

2 e1 O6 E3 Y$ C* E[

# J) n. ?- p) T' |5 t8 ?2 Q" X3 M1 z- Q4 m& m* [) ?
do-trade

5 n$ N; C) J( P4 e; x. k& z& m; n; l. }$ A2 q; q5 x( b! E: `
update-credibility-ijl
: l% J, }# W/ N6 n, `. v3 }

, ?! C: w, Y. J* cupdate-credibility-list
( F5 F8 V3 l# R. r# c

  x1 k9 ]0 I) ~& k6 U3 z3 o6 H1 _9 A, d& `
update-global-reputation-list
* W1 _6 E7 ~3 M% J  V) ?7 L
1 y" A9 U2 e  X: m4 {
poll-class
4 I$ t4 ?  ]3 W; p- g8 V
( |4 d1 I7 E8 y. }
get-color

( m2 `7 q; p: l/ B) Y$ _; `. c5 d3 i+ j# C. s/ A
]]/ p! K6 O8 O* S) {9 k
9 F% b- s& l$ N
;;
如果所得的信任度满足条件,则进行交易) I& o6 _9 ~% e

4 n5 b6 ]# x0 g) ][

( ?2 E0 x+ Y. y, J! R0 m) a  j' b  ~; D' m6 s, I
rt random 360

; V  j& o0 }8 r$ D* y! ^" ^2 ~9 [
fd 1

( x4 s4 t4 G0 b$ o2 \1 y% h
5 f) `7 A" ]+ t8 ?# M) ~0 {  G]
0 W# H, b/ `8 N! n! a9 q. _

- y, I, |( o6 ~( ]) Lend
; j6 |* m" {/ a* H$ `9 J6 B
( Y: r7 P4 O9 H2 \; Q" B
to do-trust 2 ~5 K4 ?: k2 z. {
set trust-ok False% q# ?; |) l* S; z% \( N
9 b: P0 m% b" C& t6 B

# V4 p* m0 l$ X' h8 ?9 o$ rlet max-trade-times 0
" b# L( u  |7 S3 W7 Xforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
& M# \. @' M1 ]. k5 T2 klet max-trade-money 0
* e' P0 [: |$ e2 t& C! ~0 h' \1 {foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
2 ~2 `7 u0 S7 k/ n; Ulet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
7 X+ Z* \0 B  ^3 ~, b* v) Z5 P# {+ l8 _( |. i7 p) ^/ Z

8 P; v9 I; A$ P3 E! Tget-global-proportion' c/ r% _3 k# G* Q
let trust-value: }$ p4 P( }; [
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; k# `' u0 E/ r) h" q0 P
if(trust-value > trade-trust-value)
, n) B+ F* z' P% _2 x3 {[set trust-ok true]
) T3 r. `0 k* q4 F2 n6 I+ N1 e" Dend, f0 ~8 s$ l# `- g3 h
" N" J0 j! v6 i: g: d# R
to get-global-proportion
- k. j% \% s" Y5 |. o8 x( O! jifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)8 \5 \8 @6 i* g! b# y5 N# `% k0 Y1 D( o& J
[set global-proportion 0]
' P( R: |" c8 }3 p: k4 k[let i 0
. m& _+ L+ j8 p7 k) Z) nlet sum-money 0& b4 Z- }, n1 |& ?
while[ i < people]
0 ]8 v' ?; N* H5 z1 E[5 {; ~; C: l5 I% {1 u
if( length (item i
* }  \' r3 V) T% ]9 t+ l1 H. E4 J/ Y[trade-record-all] of customer) > 3 )

: S# ~. c% ]+ r1 H  n9 M[
$ s4 F+ t) a5 pset sum-money (sum-money + item 2(item i [trade-record-all] of myself))6 o) p* P* \8 Y, z8 H
]
6 H$ x7 `) L$ Y# `]
& p3 H% x% N' T4 \: v$ Q# U# Wlet j 0
+ W4 Y/ A4 |) m1 `% Zlet note 04 ?/ u6 i8 p/ F$ g4 ^! Y" i# h" R
while[ j < people]/ y5 ?% v* Y' E$ [+ S& O
[
/ I- G& k  O9 F' oif( length (item i6 A" }& J+ S; v% m& a: ~
[trade-record-all] of customer) > 3 )

! H6 E  h: M% p( [  k( Q% e[
7 t: |: ^$ C  y* J7 j( \5 [ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1); p' K7 U$ ^: {) T1 R: V+ E
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]+ p1 p1 F) D9 K) I# m$ L- J
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]7 Z3 M+ w5 U+ X5 L* }9 \' `
]& i: u" b( m3 i+ M2 C
]
% F& I0 A7 W1 Uset global-proportion note
3 S' b, Z" P% ?* O4 g' d]+ X4 F8 E) y% }  y0 v  n
end  H- B6 O. W9 b5 k" Q8 l  ~# }, t
6 B, P+ d( s! c5 K4 I4 ?% T/ l% F  Q. M
to do-trade0 T+ f( a( [; |( f/ c) E0 ^' r
;;
这个过程实际上是给双方作出评价的过程) |# P% m( _2 o9 t. ]( v0 J2 r) _
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( x) s# |+ o4 r4 Oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
  v0 b! R4 s) _8 L) m  uset trade-record-current lput(timer) trade-record-current
! k( k' t- l( F! N: B; J/ r;;
评价时间2 x/ H9 O. z, M0 a6 K, ~7 t1 y3 ]4 u4 M
ask myself [2 s6 q! P' w$ G! E5 }
update-local-reputation; L0 p9 F0 J7 `. N' W6 Z
set trade-record-current lput([local-reputation] of myself) trade-record-current3 e3 g* X2 `' p. {: U' D
]
7 l! Q8 b- a3 T! W8 qset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself. R8 f; f+ o* \8 z" k
;;
将此次交易的记录加入到trade-record-one
3 Q, j* g, f  r2 m4 cset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)  X9 m8 u4 H$ D9 \% f3 t1 L
let note (item 2 trade-record-current )
& \4 Z2 J  n" H6 l, pset trade-record-current
: |5 ?, L# l0 W( E(replace-item 2 trade-record-current (item 3 trade-record-current))
6 A5 ~3 J9 D( O% ^9 h
set trade-record-current) ]) G' {' Y# \( |) Q
(replace-item 3 trade-record-current note)
5 F/ Y& y% Q5 w5 k  Y. X9 w" G2 U
7 w8 i8 r  o- ^4 ~+ N+ l; ~
# t! l% ?' W9 b: f
ask customer [# y2 }7 l2 c3 G8 b
update-local-reputation
- `6 q7 K/ p5 cset trade-record-current
% j- p2 ^- \6 j0 ?" b# W( K(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

/ _1 Y' t. f* I- P4 ]  O, o]+ u  V2 J6 R" r6 A

" H& C$ [0 F  j0 z2 T/ u
. t- J& l& j  ?- s7 D- p) h5 w
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer9 A/ V0 w  e3 Q( B1 i- i
1 e9 [/ V$ D* G' s
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))7 T  i0 J0 c. {/ Z  F
;;
将此次交易的记录加入到customertrade-record-all
- ^; R! t" v5 w8 O6 e& g1 D2 }! l. Zend. l1 U1 ~; c6 d( C' ~

4 H9 L% ~+ n8 `, p+ p2 ?to update-local-reputation4 J1 S9 I# C* A
set [trade-record-one-len] of myself length [trade-record-one] of myself
: l5 ~+ F, s$ Y4 Y$ @( n  E% E# [1 n5 @, A4 y
( |( v+ O$ S+ B. o
;;if [trade-record-one-len] of myself > 3
# g* R. Q' {  M+ A
update-neighbor-total% ?1 _2 W7 Y7 D9 w3 R( s
;;
更新邻居节点的数目,在此进行) P; e# _! t2 Q$ V3 N: S- E& Y
let i 3
* j( {' y% X/ b' w& plet sum-time 02 ?, R" s& c7 f* q& j9 T" G
while[i < [trade-record-one-len] of myself]
. [$ Y  i9 ~5 d( \  J[
2 a: R3 D: E/ Z2 m6 u, bset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )% M7 [. n' `/ s. S2 a# J& y
set i+ }2 R% ]9 d; p
( i + 1)

7 B5 e5 J$ v7 k1 s]
  {/ T- o7 }2 Q9 Y# J. w3 `' g% h1 Plet j 35 @4 |& h1 L1 \" a; h  D4 X. z
let sum-money 0% A" [& I. `* J  E0 C
while[j < [trade-record-one-len] of myself]4 N- W8 s) Z# \1 S' M
[
  K7 U5 a/ K5 C" zset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)/ |( d1 j% Q  S/ b" E' b- v6 E
set j
/ I# ?0 J+ ~3 M7 g2 V0 X; `( j + 1)
3 y7 n+ r% M  ~# e
]
! |1 _4 F+ |0 f  z- z) f) ]2 j  N+ Nlet k 3  y- a7 ^) G. c6 s
let power 0
3 p" l: o$ C6 ^- H5 X4 Flet local 0
* A, \9 t& H: f5 xwhile [k <[trade-record-one-len] of myself]
: j; \& n& S/ a, Y# Z[
0 P; _& a; z' {4 P8 Gset 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)
& F: q9 }2 M( k; t" r1 N/ `set k (k + 1)
5 C) }' ~; C, |  Q9 K& A+ m]( v- }4 P' Y9 `7 r
set [local-reputation] of myself (local)
: [& i3 D+ y& s9 B# gend
3 q2 G. b$ s0 @- p7 D6 {$ ]2 u* A; @9 ~3 c3 _. S, ~( c% g! h
to update-neighbor-total1 g  ?0 N/ ]8 c7 u; v1 [: ^

. h  u* }% X0 sif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
/ c7 h, h: w$ W
' s! S& [) m3 z" f. \

+ ~5 d6 b: e. {" Kend
. ]6 O0 J0 `( E- {: D
  c& |' P; L) n* {' W% Q2 F0 \  nto update-credibility-ijl
2 j; a2 z/ Z% ]6 _. y6 K5 F' I8 }& A  K! v' N
;;
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。8 y. l: f, ]% @8 V1 I
let l 0
5 O* X7 s+ R+ t, ]/ Iwhile[ l < people ]
; {- q! M2 o# o4 k; c# ^;;
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/ d- }7 o* B* F
[' f" i. o5 t* }! h' g+ t
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
, q6 a7 O7 t4 ]- s& kif (trade-record-one-j-l-len > 3)
9 O2 y( t/ v' f( E: L. e8 x[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-one8 P; s9 R& \4 t( q" Z" t
let i 3) w" o2 m- A% O( u& ?6 O' v7 g( a
let sum-time 0
7 e/ i' V- `7 m9 B: K- Ywhile[i < trade-record-one-len]
9 {3 X2 M$ \3 B2 b5 X0 c[6 ]/ f/ }0 u/ I  [: G6 t# _
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )% Y0 B; d2 y0 `6 M* x
set i
4 w" v! [8 i6 T! [* s" V( i + 1)

6 ^: P+ T( e* ]8 u* `9 g]
: z+ \" L  W$ I- wlet credibility-i-j-l 00 \) t% K* i# l! S+ \
;;i
评价(jjl的评价)5 L" |2 C. _) K5 }3 k+ m( ~
let j 3
% ]  c5 p; R; ^" W; }$ W5 V: xlet k 4, D) ?) x: k, \2 `) k, e
while[j < trade-record-one-len]
9 b7 p( L  R( A[
5 |0 I* i$ T* s4 w% x9 mwhile [((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 A0 I; z# a; A7 F5 mset 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)5 g" a, `$ ?6 Q# g, x: _
set j
3 z' [- X2 Y5 T1 @( j + 1)
9 X4 m- `' Q' p3 T5 j8 o
]
* Z/ [% h3 L8 e) g! z0 Rset [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 ))
- B! k" d% p/ ~" g4 E/ D2 ]
" l& c7 s8 `( s6 D
2 N2 m& x) a. O% K9 s/ x2 R
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)). F$ C  G8 u4 w; l  \, s5 E% U
;;
及时更新il的评价质量的评价4 o! Z) T. t3 p$ V9 O" `% S% e4 l
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]4 C+ o) U/ j' }- [: l" R7 L
set l (l + 1)3 @  P1 |( @8 k8 \: k1 i
]% c$ E( U0 p2 y$ b: ~
end
3 A, m) a; r$ M0 w8 ]! D0 K
" Y# C2 G, D7 Q+ V& nto update-credibility-list
' H. M9 B6 |/ nlet i 05 P6 U& J( t8 E/ O
while[i < people]
+ e) x# A6 Z* k( Q0 ?9 [[, A9 J: N* U7 R- m. S+ x* J+ e
let j 0
2 ~9 M1 m% }4 y+ R; ylet note 0* R0 P" F# u- m- G
let k 0' j" c7 y( Y7 a
;;
计作出过评价的邻居节点的数目
+ u. a' g% {. E6 u" ^while[j < people]7 ]( N- ^0 T1 ^/ v0 L
[! L. w( c# q+ D* D
if (item j( [credibility] of turtle (i + 1)) != -1)
7 V* q9 t1 p  y6 w: {;;
判断是否给本turtle的评价质量做出过评价的节点
" Q% e6 R7 J: @$ E[set note (note + item j ([credibility]of turtle (i + 1)))
' `: u6 n  ^6 i;;*(exp (-(people - 2)))/(people - 2))]

, C" B6 d8 Q9 ?$ }: _6 c, |set k (k + 1). x# u( Y5 B  }: C1 N
]( s. k, J, n" b
set j (j + 1)5 t4 J2 }+ }  i, Q
]
% K& `7 \! v! c4 o1 {set note (note *(exp (- (1 / k)))/ k)7 i; @! _  R) o
set credibility-list (replace-item i credibility-list note)) o/ }/ ^7 W  b4 Q' O: b8 b3 y2 W
set i (i + 1)" l/ [% I6 x+ p* `/ V: y! {
]
! m7 Q0 T& ]. p3 a+ j0 ]6 z+ a$ Zend3 t) v! B9 t% |. d/ Q
! F, f3 @8 |* \* u( ^' u8 y. D
to update-global-reputation-list
+ I6 [' m* d2 E. S  o& tlet j 0
3 E: ], C1 p9 Bwhile[j < people]
9 X% j( E/ O0 F+ }$ i6 M+ K& [[* l, j1 l. d& n, c6 J
let new 0. C1 J1 l6 `! y+ M1 d" M4 V
;;
暂存新的一个全局声誉
  }' t) U% e# R7 Hlet i 0
8 o$ r& Y, j/ h7 E( blet sum-money 0
* _5 x4 `, G3 v! x/ C- \let credibility-money 0! P. q+ S5 p  F9 p1 w( X; ?  @1 E+ ?
while [i < people]
4 z( x! Z% e) B. q[
7 L& j$ Z, i2 f9 Z* yset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
& ?2 _& D( D# r6 Oset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))  C" Q% L; x+ c, w; W. ~
set i (i + 1)% b" m% a3 e7 S. b. z! }
]3 ^1 j* B7 D3 a! \, y- b) X2 N3 K
let k 09 U  q6 e* p3 e" x
let new1 0
, y9 B+ D& L0 f1 y) Kwhile [k < people]4 s# w+ W; M3 `9 f0 ^
[+ _+ X8 s1 b" @- a  B
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)/ b& [3 n4 c! a/ L" y1 [
set k (k + 1), S7 ?  h# t+ |# Q9 [( O; Z/ R
]
$ e" G7 w8 x- K2 W  D# Nset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
2 t3 l/ g; i* w  a# qset global-reputation-list (replace-item j global-reputation-list new)
! E5 ]5 j0 o8 s) ]6 f! v2 hset j (j + 1)# o  x  N8 P$ C, M* z% H
]
1 m$ D" i  l- E  d: zend
! {: Y" L( k, i/ w$ F$ }" n+ n3 ~9 D: L1 L" N

: Q; ~# x- ?0 d9 i. G8 r# ~* f/ }3 e5 D! C! N
to get-color
: }# d7 O1 U! N  F: `" ^0 D1 F2 p0 b' |
set color blue

6 {* g& [3 D' t) ^0 S/ rend
" I0 N% j  K% o
  o! D3 O, o& Fto poll-class
0 L6 c# o3 n/ E' s6 h+ @end
6 ?' t; ]8 C  ?: I/ s% S0 R
  O3 K! l9 I0 X/ q0 \9 G5 Ito setup-plot1
; P# L5 C  U& B9 N. n
6 a+ N. S% S8 o/ `; bset-current-plot "Trends-of-Local-reputation"

) h' Q$ @; d8 x8 S
# p- `1 j2 @  W/ A' ^" hset-plot-x-range 0 xmax
- }  |7 H3 O' u0 K
% ]# z; n5 i5 Y  E7 {# y5 I) c. Q: U: p
set-plot-y-range 0.0 ymax

4 w% v$ i6 d! I& u( }" p/ s" yend
5 c6 z/ O+ M4 E' t0 J' J) C) V; }# ?' T/ q3 Z2 l# u# j% N) D' B
to setup-plot2' K; v7 U( ^& l  j! _+ I
+ V# w5 n4 L. |
set-current-plot "Trends-of-global-reputation"
& u; N5 I8 R8 u5 A, F7 g9 U

) t! R2 f7 F, ]+ P% g8 T: c) hset-plot-x-range 0 xmax

* R/ }$ j5 M+ j7 }9 V# _  z2 E
' i1 j" k3 x1 `$ B3 X  M- iset-plot-y-range 0.0 ymax
! i8 p$ b, D7 T& `+ k% i& _5 V
end1 \3 W  l( U: t- K& {. A* j+ b0 u2 i2 O

) b0 t3 s# Q5 Q/ P! vto setup-plot3, r! _  ^8 e- r. Y; ?+ a

/ Z* B" z- H6 n5 Xset-current-plot "Trends-of-credibility"
4 b5 S/ a4 r. h: R: D( C

7 h# h9 T2 B; N! X0 q* Aset-plot-x-range 0 xmax

& i$ i: S9 ]/ q2 R- N4 p, V- c  @
, y: j  Q1 a$ h" F1 b! a" M5 sset-plot-y-range 0.0 ymax
7 e& A% K# K0 _. l: [
end
7 z! ?1 t+ d8 [' H4 @' F+ k3 H$ b4 t' k% r, t
to do-plots" |$ ]2 H) {) s- \4 j  }# V
set-current-plot "Trends-of-Local-reputation"/ h, n, G- f+ c5 [
set-current-plot-pen "Honest service"- E& X" B  A" ]2 B
end2 [" q3 S* X& @+ s
5 Y2 {- s. u0 E9 J/ G# S
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

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

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.5 Z/ y% W5 S: {8 v! w/ c
4 l4 ?0 x: D/ m) k* w5 O% e
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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