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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:
; t* q0 V4 E  s: A$ H8 Sto do-business
* A2 ~: p3 F" x! m; ~) K3 M rt random 3603 @( g/ L# O' x; @8 }9 i
fd 1
! _0 w* w8 t8 G9 N) f; ^( @4 s/ M ifelse(other turtles-here != nobody)[7 k# d9 z9 _3 N! D' l9 U
   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.
/ `5 d0 g2 o- A   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
; n" I4 s! J" V8 ^; t+ h   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
* c) t; p6 z+ }9 W   set [trade-record-one-len] of self length [trade-record-one] of self5 N2 B$ L$ k) a+ d
   set trade-record-current( list (timer) (random money-upper-limit))
& k/ ^: o8 ]3 F* g7 r7 X# k6 F3 g0 H! x
问题的提示如下:- D8 [- l3 L* T2 {  u& Q
+ Y$ Q  `" p  B/ P4 d/ V
error while turtle 50 running OF in procedure DO-BUSINESS
) e$ R6 `& {3 _  called by procedure GO
# S8 d; U: ?, d+ E5 ~) rOF expected input to be a turtle agentset or turtle but got NOBODY instead.
- b- n8 }0 p& h: j
(halted running of go): ^8 i' W- Y, U' k- \

1 ^) m, S6 y) S4 r这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
5 C9 b* t- p1 {' B. a- L5 b( _- U1 e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" R0 G3 n8 s0 E8 z8 t# u- J( l) o
globals[
# ?9 Y& r; m/ Y6 w, v8 Axmax/ ]. [/ b3 l. l1 S. ^- J$ v9 ]
ymax
' r; y5 ?$ Q) X4 j# C1 lglobal-reputation-list4 X; d1 X2 C' n- ]. [
$ L8 {/ c' o% C" `# m) h
;;
每一个turtle的全局声誉都存在此LIST0 l. p2 ]: y. K* d' G
credibility-list2 ?; n9 F5 M& j' U+ H' b
;;
每一个turtle的评价可信度
% W- K' M( |2 ?6 V' S* |honest-service
1 y0 I& K# L; r- _  r# T/ Xunhonest-service4 F" S; F& p. i9 u# A
oscillation
# }0 h- D6 U& N! a* C4 {7 Vrand-dynamic
4 ?8 z- d# a  @: w6 g) o% u- A" A]. K) R) w7 ?4 ~3 s: S
% b: x/ {! Q( m' E; P! q, U4 [
turtles-own[
: z2 T2 J. b" M/ }" itrade-record-all
9 t9 @: E8 I5 R;;a list of lists,
trade-record-one组成/ N0 j) R! {4 M+ N# h" H
trade-record-one% }! }; X% M8 \* o# ?
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
. p9 R+ N5 T$ ~2 m8 k: ^9 a# J/ j4 j8 d# g/ 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]], s8 n; Y; i+ ~  q6 d. J
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]; }0 z! m; y7 X3 V
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% K* k  b4 Q/ m8 J2 Z+ ~+ e! H6 `5 Z
neighbor-total1 N8 C" J2 g) I( e0 M" v+ h# e
;;
记录该turtle的邻居节点的数目
2 }2 ~: C! T0 [9 v3 A) u  Etrade-time
) i  ~7 `' n% m. [+ S  S;;
当前发生交易的turtle的交易时间
' C1 z: {" G# w9 Z- a# _# uappraise-give
! e- p/ X$ g" _& O: ~8 h/ W;;
当前发生交易时给出的评价& H8 \2 F) o1 d( x7 [1 i2 j+ J0 j
appraise-receive0 E5 |3 j# e' I' C
;;
当前发生交易时收到的评价
( E2 B! t. J- p# {' ?% B3 aappraise-time8 \; h4 Q" r5 N6 L
;;
当前发生交易时的评价时间
" F' b1 v- o& T+ V% Klocal-reputation-now;;此次交易后相对于对方turtle的局部声誉% I2 l/ x( F8 y0 ?; b
trade-times-total$ T! Z6 }# e7 Y  M/ F  p9 L% f
;;
与当前turtle的交易总次数# K7 d8 ]  k/ o* ^  ^9 W" q! z5 v
trade-money-total% ^5 T" J3 \$ h6 [. i4 C
;;
与当前turtle的交易总金额: I! y! X; X! t1 _. y0 {
local-reputation5 \/ E1 @7 m. m1 d+ N; ]' b5 K, U
global-reputation% i) x4 i1 z& o3 L
credibility
4 w! W* y( F2 Y8 R1 B! a& @/ t;;
评价可信度,每次交易后都需要更新9 Z* I# c/ |) j: k
credibility-all/ C5 G$ p& M7 E
;;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
+ z8 I7 t. O: @# s& }% k1 ^# h& a* 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" z" ~. X6 N1 ]
credibility-one9 c5 J: Y9 }1 x. L+ N5 ~
;;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* a  U9 P) m7 }; r3 K7 Z8 H: a0 T
global-proportion
( p2 d4 M: Q' s7 U+ ]7 U# tcustomer; k& i. P6 h2 [% x" _
customer-no
: F' S* N. c# A$ c, Z: atrust-ok. G5 X, A3 x. h  X4 X
trade-record-one-len;;trade-record-one的长度
, s3 Y& t1 R4 t/ E9 W) k" {]+ ~7 d' j$ j6 m6 U0 o" J

& L8 y* t" m- |& F+ x;;setup procedure, p, R& i+ w/ y: D

/ ^# F3 ~7 y$ p) V" ]$ Wto setup1 |  {' s5 z3 @& A
' f* r9 K: S$ J3 g: s9 W3 _
ca
: [5 X" E" k4 C  g5 i5 Z: K
. c: L9 L+ m& ?- s$ C* q
initialize-settings
8 u7 L  H, V8 e+ H
" K% i) s" R* x- r5 P( n9 i# x
crt people [setup-turtles]
1 A+ ]0 j0 H* Q) E% J/ L- _
# ?4 `+ v  L  V8 K/ \
reset-timer
5 A7 x* l+ s7 m9 K& K5 }
& R* Z2 T/ k+ b% P6 b
poll-class

' U0 n( Q% E! S) }$ ?
. n5 E0 }% U7 r. F7 Bsetup-plots

9 T' d" O+ m3 q, A$ y. R7 e9 f
9 L% g9 y" S) ?: H3 Gdo-plots

# S/ w# B( U/ y& ^/ B0 Z7 J/ yend
6 q" f% g! y8 N# V; V! g
' }* T+ o2 G1 bto initialize-settings. M& N4 F7 [, x. H

/ I/ B4 x1 y  B$ Uset global-reputation-list []
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. L( ]4 h3 [; F& H
set credibility-list n-values people [0.5]

8 i7 z  ^  V0 Y1 h2 u( ^$ d* ?* I9 n/ b8 U6 a
set honest-service 0

' h9 G) d+ a% f& z( d
$ @5 z8 v. E  ?+ Iset unhonest-service 0

3 |# B7 c+ O, Y. A6 B
& V# ~' |  o1 h- U' cset oscillation 0

% p# ]1 U' i0 ?+ K1 x! _, P
* \# X0 Y  W# b# q' G4 P/ sset rand-dynamic 0

' U3 L6 m3 O' I* |1 ?end7 R+ V" L0 ^  B# I" I
5 c, H# b8 W, u, k2 j7 d" c9 x) q
to setup-turtles $ V" }& b- L) o
set shape "person"
- {! ?7 a1 b9 M: [setxy random-xcor random-ycor
; N  o& [! g% u8 M! q* Rset trade-record-one []3 u! o5 S. Q( `

5 t2 Z5 x8 N5 i/ i+ pset trade-record-all n-values people [(list (? + 1) 0 0)] ( r# D* ?, \6 @8 C( u

9 n0 J4 y8 M" a( l+ ~& ]set trade-record-current []
: B  b; [2 o4 \4 Zset credibility-receive []
9 _& t+ }6 c& D; n) ~set local-reputation 0.54 w, k5 s7 R1 T  h  D0 R2 p
set neighbor-total 0
+ H* W1 C% }& t: cset trade-times-total 0; n% C" ^$ A0 H
set trade-money-total 0
7 Q$ o+ V# F. ?; G- Dset customer nobody
/ a+ r+ {: E+ _( B4 Z/ T' x5 Xset credibility-all n-values people [creat-credibility]1 F! a$ Y* y, j
set credibility n-values people [-1]8 w' s7 [( Y( Y& |: n( ^& A
get-color
  e; h, d* [2 A) E" _8 U) x
; l( o, G0 b5 v! C$ X3 T
end
- z7 b' s% b, U6 {& s
6 R: k; k/ _; Wto-report creat-credibility
. a+ H, Y, y  d( D, `/ ireport n-values people [0.5]
- }- O9 D/ m  }6 Y% Eend
9 v& j$ o8 B* _: g& f+ K8 c) P' x# g1 ?& j  o: Z  K9 Q
to setup-plots
9 _$ k! H* A' ]
6 r! y# s- C  V. K6 K  V, T- a) fset xmax 30

! P9 x! A8 q1 b0 `% o7 ]0 k% V6 a
8 S  E3 S1 h( c1 z) Xset ymax 1.0

+ V1 u0 R6 \7 R5 J0 j. {3 k
1 k* W: @0 M4 }5 Dclear-all-plots
1 I- T5 e! F/ B4 z' r9 {0 R
5 p( G3 p) O6 e" |% r4 m
setup-plot1

$ i6 |- Z7 _& d: F9 v4 d4 P. O! _% p! C
setup-plot2

& p% ?. t& _% _$ M: g5 Z/ ~
, C3 B( O4 o' msetup-plot3
) V# e) g( H, L3 |3 W
end
2 q" q, ]7 K* j& J! ~7 o/ T. W5 A" q
/ Z* ~4 H: r, B  l. S;;run time procedures, Z, a4 y  v7 o% `" k( y* S! ^

7 A: J3 _5 q5 t& |5 A6 Lto go/ b* \# k8 S# e7 h+ C3 [/ y) G7 T
6 P$ u+ ^% A- N3 q
ask turtles [do-business]
  F, P" U% V/ {2 `
end# ~# X+ a2 W- P7 M2 [" G

6 C" f" {; v8 q1 Zto do-business 4 a  W; F( b( t

1 V6 M( Y" `9 _
0 w9 `( P( }' Irt random 360

+ ^4 a' A$ B7 A7 [- U6 _: L# S$ ]  J0 Y& K* K) E* X
fd 1
' i, |% X; ~& Q* v
" O( K! y) a: x. m; w* x
ifelse(other turtles-here != nobody)[

! F; n) r5 l: t, x' I0 |  V" l8 [3 e3 @- c. l
set customer one-of other turtles-here

1 W! Z& G0 Y) f6 S0 q! Y
- m8 o8 }! g2 [( F6 p1 C& L. w;; set [customer] of customer myself
5 K1 B5 ^% e7 Y: P1 _
4 c  o' K* Q* L4 k/ z
set [trade-record-one] of self item (([who] of customer) - 1)# `* n7 \/ ^0 }2 l: |
[trade-record-all]of self
. ~; `& q" i3 S& k: y;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
. d1 s% k  T2 ?7 d# M9 G0 S
: A2 Q$ r+ R& h9 s7 d; c
set [trade-record-one] of customer item (([who] of self) - 1)- g- O0 x+ o# Z/ x) E7 F
[trade-record-all]of customer

- c. H* m$ C6 ]( ?1 x4 c
& a5 J9 F$ x0 Z' L, W0 j1 ]set [trade-record-one-len] of self length [trade-record-one] of self

4 w# p# z- n1 T3 C- _' {6 Q; L  y, c. F5 x2 d- ~
set trade-record-current( list (timer) (random money-upper-limit))

" z) u5 h* J! h
. V4 O7 U! D6 Y: {0 k7 e" F5 Mask self [do-trust]/ Y/ h8 I& s/ q! r3 H, {# k
;;
先求ij的信任度
& u8 C/ ^, q! |
. ^; T6 c9 Y+ O. r6 x" eif ([trust-ok] of self)
5 w" b/ y7 x* f# M' M;;
根据ij的信任度来决定是否与j进行交易[" _$ R) |4 g4 E0 I
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
- G# S0 U, [% P/ a! z
; M7 T/ V* ^8 [- C[

7 D( ]. m  X  {: B' ?$ e/ o2 g
' I/ r# C5 J% v; R& ndo-trade

9 c% T5 Q7 [# i+ `+ a- ^* w' B. t7 I$ {# L: U( ]% e
update-credibility-ijl

. h, F! m! O' O# k3 p4 C0 F2 y, x; \1 C- f& b
update-credibility-list
: d, @/ ?# h8 d9 B% N) j" p, |

0 x0 Q' [/ D1 s7 Y- b5 [- k+ q
* W/ L3 P: s' Y& q  g: _update-global-reputation-list

+ e4 c$ ^7 S' S5 C9 z
) x. }5 ^" K- c4 V' d8 z4 W! epoll-class
/ M: x. s4 z& ?# v+ A& `1 _

% X5 X5 h- n5 X% b$ Y( @get-color
( A6 k' Z* P8 F
6 F# d- Q) |3 Y( |
]]* y# K9 [: r% f. ?# R

3 M: o3 R9 E3 {;;
如果所得的信任度满足条件,则进行交易
2 b# b5 A- E, ]! r. B# u1 w8 Y. f
- L* M% b& L8 A4 N) u: ?) d[
6 N9 L: }3 B$ f- r* u( D" I6 E9 ]( W

/ {) Y/ b/ S0 s! ?; m( q& N: O5 U% Trt random 360

1 y( R' B1 h; [2 o( M" T$ S7 a  [( Y
/ r/ \0 p% ]" ~, efd 1
: E  o2 ~* b- p# z2 s) H) Q

/ l& U9 r% K* b4 P6 f# M]
2 y' h7 L( s- ~' }% |0 u6 I

9 N% s; C3 K. R) S- A9 Lend

$ r* h3 F6 x% `+ t- R3 s% O; T
$ j; d6 b( i9 {to do-trust ' A. b  {. \9 Y9 R5 u
set trust-ok False0 {/ W& P: w# q3 M0 F, C

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1 l) N' a# ]' }6 `6 b
let max-trade-times 0/ m0 y# w6 ]6 U' w
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]# }* X' c# F0 v4 x
let max-trade-money 0- U3 n' e5 X) n& O
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
9 i5 _, D- L$ j% `* @% Elet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
1 ~! `# _# ~  k2 f. |% U6 P5 g3 r. P  z

7 x! K# ]' ~, Q  Dget-global-proportion
! U+ H4 p' e- |* i- @let trust-value. ?* W7 N( b7 \2 B( k! O
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
1 B' l4 M. t' _* s0 ?% Z$ Y
if(trust-value > trade-trust-value). S1 {# }. g9 U+ _6 q( B
[set trust-ok true]
, s0 Z& _8 L* [  ]) vend# t- F) p/ o, C) x& Z
7 b0 H8 ^6 Z5 H: E/ q# |
to get-global-proportion5 }9 K5 G: ?: K6 `: |4 O# t
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
% S/ y3 X5 z+ w: L' K[set global-proportion 0]
/ j# \8 X- S! A2 p; _$ J* I- `0 p# y[let i 0! `4 z# e9 f: h& u5 _$ ]  F# P
let sum-money 0
! ?4 j  r+ d4 t7 A4 Gwhile[ i < people]
( s" W( o* F5 q1 D6 V[2 G3 f  k& a  ^) w0 e
if( length (item i
  v# M; R  E0 o3 h9 I& @" M& q3 z[trade-record-all] of customer) > 3 )
6 P; z1 }. H' c; g* f
[+ K& j/ ^( O4 O' f
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))* v; `$ V  f& e+ c- w2 v, |
]5 M' u. M( M* X" Z; G
]# T1 D" a3 j# u3 y  L
let j 0
1 T5 M6 q: B( A3 j: h" `% k2 K# h$ Slet note 0: [% A& U  Q6 V
while[ j < people]
, M' I0 J3 h; I[
9 R* h. O4 L/ e6 P4 `5 {, ?) A. K" zif( length (item i+ t6 i- ], f6 H$ g
[trade-record-all] of customer) > 3 )
/ ~: {* V: G# m7 T" ], R% N8 ]
[
/ t! v) z4 ^# s5 @ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
. u: p& B# {8 U* F[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]  r' n" |; H) F1 J% i# ~5 l
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
) H( A- }% K; p; @, e2 v/ O8 ~. k]( ?: N* a  l% f$ x5 B1 z* E
]
' W$ S& C% w1 n- ]8 C$ Bset global-proportion note
- g# T/ C# J* c! _7 X% T/ `]8 i" d, Z, ?/ S
end  A* C+ Z* T) k% L" b8 p

) J$ a% o) P& f4 o4 \# Zto do-trade2 p/ g' o2 V7 p" N' s% {( ~
;;
这个过程实际上是给双方作出评价的过程; G9 W0 l9 u  V' D& H1 e; K
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
8 F' X# S9 h! p* m/ qset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
0 j5 e9 x4 A; c* E8 Z* q  Jset trade-record-current lput(timer) trade-record-current) X( y# X; l. Z, e& z  V, \: L3 T3 B
;;
评价时间* d6 j0 E( G* _9 ~/ v
ask myself [
7 l! i1 F5 l  I( q; ~( W8 ~( _: pupdate-local-reputation! f+ F4 G  o" C( R6 i  A6 k2 F5 s
set trade-record-current lput([local-reputation] of myself) trade-record-current" |5 q! t( S4 l( J7 O+ ^
]
* Q  s0 i- N6 W0 D- V7 R% X! ?/ Cset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
. ?) [" m* E$ z; F' M4 x1 `;;
将此次交易的记录加入到trade-record-one
% s: e: ]# r' Lset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
  t: E, `4 ~1 ~3 L; Jlet note (item 2 trade-record-current )
  @% U; d$ S4 e4 d$ B' i3 yset trade-record-current
3 I3 M2 ]5 E+ ^& R  h(replace-item 2 trade-record-current (item 3 trade-record-current))

; p( d7 ~9 _% D$ pset trade-record-current( f+ S, w( z. b7 V* o
(replace-item 3 trade-record-current note)
1 z: z- e2 D1 M. U% {' J: k& P8 C* @& J  V+ T: D

+ k' [9 A6 X7 ?4 k* V9 Nask customer [
3 s6 z/ ~' b: Y- Eupdate-local-reputation9 E" I! K" }, G. l
set trade-record-current8 p* f* Q  p: p9 U8 r& C7 G
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
8 I+ I- G7 v5 O! x, y. U
]
3 c5 t, c1 v: R) q3 }; I2 P) a
: K9 q8 @2 n9 [! {# d& B  f7 l

5 |1 U" I; B7 x( k( K. Dset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer# J7 R- C# ]* s4 e
2 I4 a  H8 X, l# P  G% B9 u
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
+ r3 R  }0 V" @, t3 T) }$ c;;
将此次交易的记录加入到customertrade-record-all
" Q" e0 _4 P9 ^8 W0 iend
! {& |4 R6 a+ `* i+ N- |- I* v  E& e  m. D
to update-local-reputation
8 k# ?2 x  C( a- v: R: ]set [trade-record-one-len] of myself length [trade-record-one] of myself7 l, F1 o3 o) r# V7 p

# U& m* Q' c$ `1 x
7 @) C. i# B5 |0 \' p; a& ]$ x. u& Z;;if [trade-record-one-len] of myself > 3
# {6 h' x2 c" ~. [! q5 o% f
update-neighbor-total
$ d- Y& \( Z$ p;;
更新邻居节点的数目,在此进行
3 ?4 N! c( ~* @# {( Xlet i 33 I3 O2 a0 r" r# |7 M
let sum-time 0
( ~; x" D: u/ B! Q& h! x, v; Pwhile[i < [trade-record-one-len] of myself]  p3 x# R  T$ |) l, ]7 ~7 N- E
[
; d6 k& }  J3 ~set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
- e5 i' Q1 {5 W0 Z$ P( F' k1 \set i2 H* X0 n$ j$ u
( i + 1)

0 }, |, R0 l& h+ C- D0 {- T]
5 P$ _: }: Y  n7 |5 Z$ ~% o" F: @let j 3
  z" S" a- Z; B( _6 B2 }& zlet sum-money 0
: W. s6 R1 z4 x3 uwhile[j < [trade-record-one-len] of myself]( v' B) P6 x8 l4 e3 V6 s8 H0 T" G
[
& {5 H5 n6 ^2 o! o4 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)  y( K' M, T% ?$ {
set j) @; n' z  S+ ?7 N# m/ I) e* V
( j + 1)

6 s. c* ~) q3 T, w% f& e0 s" P]
( H9 M  y7 `3 M) G  h9 U/ clet k 3) O" c# B+ }3 C% g
let power 0
' [0 b- l1 F: }5 Y8 E: Klet local 0
* k) B8 Y- p9 P: Gwhile [k <[trade-record-one-len] of myself]
( R7 Q( @% \! g5 v[" t5 l6 O# @6 @6 F9 x0 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) ( C4 w% J# X5 D  B6 Q) `2 t: n7 ]
set k (k + 1)1 s4 u) Z$ w) L% D/ L
]5 `9 K! P, r% L% @' M& D
set [local-reputation] of myself (local)
/ w- @! {9 k# |+ ~2 d: Dend
; s; I! r5 J+ t) u9 X- M5 u
5 w1 m* V6 j% {* C1 c  t, fto update-neighbor-total
& K3 E' i5 R4 U4 n! }7 s
- \. e% [6 C* c/ [if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]- e, H- |4 A) {
( F. M- Y4 k2 R: K) k

% _. j$ M) b6 K( e' Q- K2 [end5 w9 c3 N- s3 _6 D3 P0 Q
& d2 s( M: l" F/ V& N1 ^
to update-credibility-ijl
1 G# T' V; x2 M7 {0 |0 Q
( a* ~0 e( g  a! ~) H/ z* 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。
  G2 s/ `! V7 G4 w2 m, Slet l 0
  c- M" I6 n" m. Kwhile[ l < people ]
  B" @4 B* U+ f& m& g/ ?) L;;
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  G- Z4 P6 t$ g
[
/ [, U, Q7 u% g3 p  alet trade-record-one-j-l-len length item l ([trade-record-all] of customer)0 i" }7 m" O8 ]  a8 ?* L
if (trade-record-one-j-l-len > 3)
9 ~( o5 A  b6 \4 G; N' c) 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-one% p. `2 ^9 J0 W7 Y
let i 3! t1 r& L$ r! `3 R! T
let sum-time 0
) x$ m8 K6 l8 d  s8 U5 Dwhile[i < trade-record-one-len]
- Q. V2 z3 @9 ~) ^3 N* d  {9 G3 N[
" x! g* o/ r) i$ mset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
# G- c  K& e) V; i- M8 vset i
0 S% Z" o7 S# l4 \8 Z( i + 1)

* ^* B) m. H; s) O& S]
# e) W& x, K; \; f& T, Llet credibility-i-j-l 0
( S/ b( l  N9 O% B& `/ F3 u7 U! g;;i
评价(jjl的评价)' q2 O% a. W. c7 C9 j( m3 A; m% \. b
let j 3
. V5 C0 w4 G9 O" f' ?6 clet k 4  U: H. _# x; P; h# s
while[j < trade-record-one-len]
% S7 a5 L  z, h1 }" A9 _( b; O* q[
+ Y- v2 G1 N7 G; c1 B$ xwhile [((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
: d- r. @4 J& S5 W9 j# Pset 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)
7 E% J7 k* W( S# A3 @2 O1 V) |set j
% S; F1 o* E% X. j% j* g( j + 1)

; v4 @3 B3 V. Z- X* d1 M* J]
! |" @* v$ z  Zset [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 ))
, q1 d3 l, C0 J8 b4 s" P( C5 X9 H& w; @% C5 |
5 I1 a7 w' r0 i: Z/ m& i6 t
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))7 j2 {' I+ x, n  O
;;
及时更新il的评价质量的评价# `. b/ h" ?7 J! z+ g; ?- s
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]  J( ^+ [# N2 t7 A+ c( ~* z# a- k! J
set l (l + 1)
  D/ b  X6 L9 T7 g7 Q]
1 }+ g/ X* E% e4 uend
' u/ ?) P6 J2 j' v0 W" `) ^" H4 }9 r8 Q; r( m
to update-credibility-list& j6 s( P( A" I5 D
let i 0. [& h0 U3 V+ [7 T
while[i < people]
& G' y& e  Q' U& L3 L+ ?[1 R$ T0 ^1 m. B: y: i
let j 05 e& H7 G5 Y- x, A9 Y. M9 f) P) Y
let note 0
0 }3 X! R: O4 X/ Qlet k 08 B4 G8 b( h7 w5 n* e+ e& b* f
;;
计作出过评价的邻居节点的数目' \- ^' l" \0 `* G+ L: ]
while[j < people]$ _* l! t- o; G, f; u, W* W
[
9 e3 i' K( R9 P% [9 Rif (item j( [credibility] of turtle (i + 1)) != -1): e# c" q, ~. h' X) c% H
;;
判断是否给本turtle的评价质量做出过评价的节点
1 ~/ H6 r2 B7 H; S* X) z3 w[set note (note + item j ([credibility]of turtle (i + 1))): [) q' C% B+ q' \# ?; g
;;*(exp (-(people - 2)))/(people - 2))]
, l( g' w5 b6 a' j* k8 s4 |
set k (k + 1)3 Z& R' q& Q% u1 _" B7 E
]" ?8 e- V4 R- _3 d9 X/ Z
set j (j + 1)
3 v. y  k7 D  n. q9 }" S]7 i$ _# ?1 p7 z5 l+ J! i: d3 z
set note (note *(exp (- (1 / k)))/ k)* C, U1 T; Q+ X2 K) G
set credibility-list (replace-item i credibility-list note)
- B' Q( x* I  W! I5 hset i (i + 1)
5 U: T4 _, F8 n]' N9 H5 A+ y! O) J6 E) `  y
end/ i% }  k% @! K8 s2 l; w; }3 X& d

: C5 m, F. R- q& mto update-global-reputation-list2 F; D+ D, Z) ]
let j 0
& n6 }, S2 z7 @* u' pwhile[j < people]
+ s4 e( x& a' f8 a[. j- |0 g: j5 I) g
let new 0: y3 j: _0 M. ]) o* K$ {: d. t/ q( w
;;
暂存新的一个全局声誉7 R/ }' s. u# L3 _0 ?& B- u
let i 0  G+ D- x" Y$ {. X$ i7 h
let sum-money 0
; t, t- H+ m7 z$ |* mlet credibility-money 0
5 c+ G, R1 U8 T2 C+ bwhile [i < people]: Z' U! S: b2 w4 ]
[
5 Z" Q, }6 Z! \# Bset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))( }1 _, j( C& d) }1 R/ i% J/ ^. b3 P1 D
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
$ u; t" z3 \. f, G+ C# @- d8 Zset i (i + 1)
1 a$ ~! a8 O4 r& c2 Y]+ ^3 P- c- z1 t
let k 0- f4 h! l4 d! q
let new1 0
7 t3 T; u0 @! T/ O* |while [k < people]7 ~5 F6 g6 F. N$ H% |
[
' L3 `4 k9 ^$ G" N# @: i- i( vset 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)# G4 e" S8 k; }; y8 k. I% T9 d
set k (k + 1); u5 ~0 z& k  O& R. V( d
]
5 H6 r- n+ b) }- Z( H1 b, Nset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
/ j' @0 x: k% Bset global-reputation-list (replace-item j global-reputation-list new)
. V8 T7 d6 [: h7 u* N' z! X6 wset j (j + 1)
5 \0 b7 d1 S' s! Z8 Y0 J4 r]
( G, y7 y; A8 K' x4 k7 R6 ]end! \9 i1 |2 D$ ?( [  r
" D4 k* h# q7 O0 D1 W$ ~- L) w" q! z# S

/ }+ I$ R9 `+ w# d' ?6 V  s- Q  v6 e  _
to get-color3 _# Z6 @9 Q  \. E3 e& D
2 Q8 \! R5 W6 Z, m1 ?3 z9 }; w* W
set color blue

; Q& E& D) `! K+ y, h/ l$ u, Iend
9 b( z% o3 k% O' e* y2 W) H3 u$ k
to poll-class
+ M& u# n2 I; o3 Q% ?; L5 A6 C( M; F4 send# {) |  W6 j: Y+ e" v: Y

8 W. q/ T$ R: J+ M! U/ M+ b8 vto setup-plot1
6 W- O! C& `6 C$ O% w
/ q( O( H% O7 t0 T6 \* ^. jset-current-plot "Trends-of-Local-reputation"
- Z! h) e+ U" n, o# }9 c

' Y' R9 K& P) v: {6 nset-plot-x-range 0 xmax

% E; m7 _+ x3 a" z, u
, t" R3 B9 ]8 n+ ?' W: o8 K& Qset-plot-y-range 0.0 ymax
5 h8 H9 Y8 f8 Y6 B
end* U( V4 B; w2 n) p1 p' \
) j9 V" d5 ]  o  L) W+ U- S  Y
to setup-plot2
# E! x& w" Y) A5 j3 k+ ^( I: S7 y( Y/ g& ]9 K& l- |7 W
set-current-plot "Trends-of-global-reputation"
; a" V7 e, w' q$ F% G
! M$ b6 c4 i( Z! u
set-plot-x-range 0 xmax

% {6 d  t  p: p; J- `% a! ]/ Z  V
set-plot-y-range 0.0 ymax

9 n" w- u/ _; D! t; x' Q8 {" rend, ~- N' \- L7 a2 L! B; l  h
, ^3 v6 U8 ^9 q/ ^
to setup-plot38 s$ _$ g. s  F3 B# m, W

! R! @4 _8 S' @, V0 Q6 pset-current-plot "Trends-of-credibility"

9 c9 O* t; F$ A. K
* B+ V6 ~4 C# p: ]7 h: Q! s6 |  cset-plot-x-range 0 xmax
# @/ J5 j, Y: O- f3 U. k8 U) J
) b* W3 ~5 ~% X, u8 s
set-plot-y-range 0.0 ymax

8 z2 _4 A1 l5 S% u4 p8 lend
3 v; Q3 s5 o+ ^7 w$ A3 X$ r- T- D+ j+ c9 `* k, {
to do-plots0 F( w- e* t1 |9 s$ }1 V
set-current-plot "Trends-of-Local-reputation"
/ m5 c  D( t. G" d# `set-current-plot-pen "Honest service"
. n2 d' G; V" w0 ]  @end" W8 r0 ~3 {. ~) f  f

" q5 _5 w2 S  k) _" j8 E. 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.- w6 [' |+ x; l- T: F) j

9 Z1 t4 d4 ?# i" M# T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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