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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:
) x/ \4 y: a& E8 V: U! K. x  Wto do-business
1 B" y3 h: j" n6 o rt random 360
- L  r/ U& V/ T  D fd 1
( I+ u; {/ A- y. i  B1 b0 ? ifelse(other turtles-here != nobody)[
6 @) a7 w1 d2 k7 U( N   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.( A  R8 V0 h/ q% j9 A4 H# G
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
; Q8 s7 s9 J/ x1 \   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer8 m3 B5 Y8 B3 ?/ ]: Y/ n  O$ r
   set [trade-record-one-len] of self length [trade-record-one] of self0 l3 ^6 T& i# S1 G
   set trade-record-current( list (timer) (random money-upper-limit))/ z% k; T# s5 C% u+ g" B

/ m7 G, |7 e% X7 ]问题的提示如下:
1 u4 ?6 W0 @& k2 ~
4 C. A2 V1 u# s4 T8 V# K. ~/ d3 `error while turtle 50 running OF in procedure DO-BUSINESS
2 A. }1 {$ f  W( u  ^8 N  called by procedure GO
0 |/ G  A3 k" B( o1 f  a0 FOF expected input to be a turtle agentset or turtle but got NOBODY instead.
  d- D# f. g- j3 V+ o5 q+ p
(halted running of go)
* U0 [/ T0 A0 O! e3 a; g% M% v
! |  u/ s8 ^3 v( p4 W, x# ]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~~6 }& d. a; _8 Z( F3 i: q# [
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; N0 Q1 S+ M) n
globals[8 |5 l* I3 e8 I) t  z* y4 W4 {4 w
xmax% N2 H: A* H/ X. m$ g6 O
ymax0 _7 S& {) }3 h; M  M! b+ x
global-reputation-list
- P% B' j  f5 K( D' M
& r8 f9 R9 l) t" ^( v;;
每一个turtle的全局声誉都存在此LIST5 L" ~4 ~& X' |" _: i; T+ ?
credibility-list
  ?/ [! B; q1 P5 }2 [# B;;
每一个turtle的评价可信度
# H# y; c7 ~1 }  Mhonest-service* \+ c$ k; e" Q8 [- S- o
unhonest-service' ~$ |3 |! ~% w: k% V7 N1 c
oscillation' |9 @( x. Y% D: ]
rand-dynamic: H2 y3 t, q9 J, o
]7 C$ K& f' j7 ~

/ U8 H5 x7 m" L  F, |( lturtles-own[
) Y6 B, l4 g: r* o( {+ ?* q. _' T* ]trade-record-all
9 I, e1 `1 O) F0 I2 x! u;;a list of lists,
trade-record-one组成5 l. D. F: |9 K2 L6 A. H' R; g
trade-record-one5 [2 \7 B; q; V
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
; K! }3 o8 N6 Y# `' H
) Q, `8 F$ X' L3 o;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
1 l7 g* I+ W# c6 ptrade-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]: M! V1 z$ {) G. J( I
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
4 T! D/ X1 Z' cneighbor-total
% @7 l' f& T% P9 c;;
记录该turtle的邻居节点的数目( y( k8 X# z4 B* @
trade-time& j5 V* ^1 k3 n( q( x) @
;;
当前发生交易的turtle的交易时间; [/ M: G+ S' Y+ R1 z7 m
appraise-give
& F4 S: J. o% V8 t;;
当前发生交易时给出的评价
8 x* E0 C" g* i/ Jappraise-receive
0 y; J( f6 v- q# F" L0 ];;
当前发生交易时收到的评价# r$ o+ b3 B7 I, W
appraise-time
( J8 X1 ~7 N0 x1 ]5 K2 k& J! d;;
当前发生交易时的评价时间
  X! {* h% x; [7 X8 z7 blocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
6 m0 S8 j5 g; ]- |( Ptrade-times-total6 |( f- p% t; R" Q6 F2 U) }
;;
与当前turtle的交易总次数
1 q9 B& z; W& e# x) v5 e8 vtrade-money-total
. t: H, S2 M% y- w; j( G;;
与当前turtle的交易总金额
" M+ R: T$ C- g4 G* vlocal-reputation- j; k/ B+ {0 P
global-reputation0 I) J5 w0 d7 n* Z
credibility
- R" X1 [+ m% k" t- D( F+ b;;
评价可信度,每次交易后都需要更新6 W& J0 _; s* B* K6 E' i& N, i
credibility-all
" @9 T4 j; C; l4 g& V! R1 ]( o  ~; 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
4 w; z. @9 @/ P2 {) q4 i* e; T, s/ Y* t$ n! K6 A& y
;;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
+ [: d8 Z0 d" [credibility-one
0 \9 C3 v% q- F: v2 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people2 G5 r' g- o; [. \
global-proportion' U  T6 i$ o9 T5 W
customer+ a, j) D% Z5 |6 Y: |+ V
customer-no# E  A+ u, z" h/ e/ f9 P
trust-ok
6 J/ h  n' H; @3 N) N/ A& E$ `trade-record-one-len;;trade-record-one的长度6 h' [  X2 z: C
]# ?- s# ~$ K+ a5 D0 M2 k

+ ?# L) M1 \" x$ k3 _;;setup procedure
4 S4 L( Y; r1 F9 m" v
5 ]$ X( X& K; k% D" p3 @+ }to setup
) v* x! p# m; P6 N
( C3 @$ A" U" O! u4 ^& I/ `ca
( [# T$ B( J- b$ V: ~. O
6 `; r0 F+ ?6 j; ^: V7 \$ m- E6 Y$ c& E
initialize-settings

$ c; h  q) L( a/ t' S6 W$ e. v3 k  m+ s, V
crt people [setup-turtles]
! T* [7 B/ ~! `; |+ h
! |4 V) T( Q( ?* z4 B+ q4 z: X! y, ~
reset-timer

$ N) `: w" \, |7 A
% ~! s9 C  p+ E: S- vpoll-class
5 v* ]. T( {  z
+ R# I$ z3 P: @: X- G; @$ Q
setup-plots
  w, M6 I7 ^* p9 S( U6 w6 n
4 U; `& C. H, `- O7 m( {6 e6 x+ o1 r
do-plots
2 ^1 h: o* S9 r0 y' g
end
+ T3 D# q6 Z3 a9 H/ n
& @1 s: Z8 q6 C% J, Pto initialize-settings4 y! n" c* `1 R6 @- U5 e7 I( H# q

; [# ?4 E# A1 s0 t2 Uset global-reputation-list []

4 j3 H3 u" y0 O- d4 x7 ?7 \4 Y  Q! g% u% {$ G1 Y
set credibility-list n-values people [0.5]
, E! n9 l6 Q6 P( w* T
$ E, n5 @, C; Y" H" V9 M
set honest-service 0
0 E9 v$ u+ T+ r6 g$ y  w

  j. Z( _, b! `set unhonest-service 0

) C$ k- F" ^- _7 }8 Y3 A
( Z+ A7 U" H" v- ^; ~3 {: H8 Pset oscillation 0

" F( C3 d) C* \+ q2 r; Y/ v( h2 t! \- `& n: [
set rand-dynamic 0
5 q, p5 z: y( p/ I7 m/ \8 F# I
end6 C! P+ |3 \; s& Z) ~6 L* U
* s" A1 z$ G; Z  R. d" |
to setup-turtles - z, W( w( I6 u. h- D: `1 _9 ?
set shape "person"
! f1 D& c2 d, u2 p- X" X* jsetxy random-xcor random-ycor
/ L/ v0 j9 h, D. p* {' Lset trade-record-one []
' z/ C& S+ t/ M6 N) U
) [  R1 O+ i# V( \9 H9 W
set trade-record-all n-values people [(list (? + 1) 0 0)]
4 r% s7 X/ A6 L- I: u6 _) [
8 k) M8 ?: C8 f" Y$ k% u
set trade-record-current []
0 r: \! K9 m8 V! A+ Y( ?( Jset credibility-receive []* L$ \2 y7 g) Q; P( `( v6 ?
set local-reputation 0.5
+ k% G4 O& r1 L: O1 M! Xset neighbor-total 03 l  W+ S$ B! \+ n6 Z
set trade-times-total 0
  f' X) y- C4 o) {7 a+ s; Mset trade-money-total 0
1 D$ r! A% S, @' eset customer nobody
8 E- f  s6 k# x, iset credibility-all n-values people [creat-credibility]7 }! {- O  u/ W9 q, L! Y% T, v
set credibility n-values people [-1]
- X8 m" k  F7 p1 l, r& Pget-color
% k( U6 |( d, O% i
/ n; d" u$ }# C$ F7 V
end+ z, y9 e% {6 N* r
3 o( h' n& E; e
to-report creat-credibility# v4 k4 B$ |7 k# \
report n-values people [0.5]4 S) F( o, Y+ e8 Z$ B/ e7 A
end
# s3 E; m# X/ Q& ~; |6 ~  P  Q6 u# }
to setup-plots9 {( I- M' Z3 `. g3 @6 t5 Z4 x) _
: ~5 m* \  B3 F' P: B
set xmax 30
% T' o  D) m( h: H7 d
$ V" a6 Q3 s3 D
set ymax 1.0

( a' ~/ \2 a$ N# g1 m8 ~5 _
2 F+ r# D: Z( J: mclear-all-plots
" f  X) x3 i$ g) I* f0 m

' ^, h# T& g3 r4 K% esetup-plot1

9 c5 v. i) h0 p. A# R4 |: u& y
6 B8 A, B: `) P1 ksetup-plot2

* w/ {* }$ ]" |; Z# l
4 G$ J7 ?  q* l9 l" h) |setup-plot3
5 ^$ P! v. F# b
end
9 M; Y: X0 ^! T! U- H% n5 A. D# ~
6 |$ E; m3 A7 H. u+ q;;run time procedures$ T! A. B" L1 N/ L
1 J$ Y4 [$ {9 [: P/ R! E3 ~
to go
6 b6 j" Q$ [# P6 H3 J" _+ _3 s# L
ask turtles [do-business]
: `; k3 J/ r1 L
end
5 @1 u8 W2 w& F4 \- i9 n- P+ V
5 W- b/ }9 h% E. w" S; r3 C6 _) ?& xto do-business
( ^( W* `+ }" \

8 `2 @- P; R0 Z0 Z' i/ T6 q
- G1 D2 j* X/ [9 O, Yrt random 360

& u8 k* T6 ]$ P  ]# Q1 H$ B
' n3 j+ `  E1 [fd 1
* @) a" l1 n8 P* ^% j, u6 u

; i9 m7 |# l9 }0 ?  Eifelse(other turtles-here != nobody)[

- `6 o1 _, q6 `/ P
* D$ E& Y8 F# nset customer one-of other turtles-here

: k$ ^; u4 w# w9 E
  z0 m" b: W. m3 o, A;; set [customer] of customer myself
* }9 E; x7 _6 o: y& u' w
% O- K9 y1 f4 b6 F/ b
set [trade-record-one] of self item (([who] of customer) - 1)
9 J9 A& @# @( v[trade-record-all]of self, |% |7 p9 l9 ^: i9 |# }+ y4 \
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

1 ^; X) y$ ?  P) q& X2 l% Z  C6 k0 @6 C2 Z2 A- D, N
set [trade-record-one] of customer item (([who] of self) - 1)* x8 c1 O2 ]) F7 p
[trade-record-all]of customer
* B+ T8 l+ Z  Z# I; s8 C# D; a+ ~) E

: n7 J$ e( L5 ?) E3 o& Wset [trade-record-one-len] of self length [trade-record-one] of self

. t8 ^9 _$ k! p( r% ]+ B& L- t/ U+ k! N+ O; _' N+ P
set trade-record-current( list (timer) (random money-upper-limit))

( N" M  X  M1 K2 A% r5 J
; p; V0 x0 Q( a* lask self [do-trust]4 U  [/ ?& N' Z/ r/ r9 n! D
;;
先求ij的信任度' n! r6 I0 _5 U8 b" M) m6 n

5 c" H! W+ c* a) z3 |7 G3 Q2 L/ cif ([trust-ok] of self)% f2 ~1 _! C. t8 ^# p! p5 M
;;
根据ij的信任度来决定是否与j进行交易[1 G+ E5 D: D0 x5 I+ q- m
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
  [0 B/ k2 D/ Q" w9 V2 Z- R& C2 [9 o& [
[
4 k7 z% ]1 D6 F4 k0 x
- L+ F# G/ C9 G4 ~8 x9 V( D
do-trade
* _- S2 y8 K2 t0 y8 z. K4 y1 j; B7 w
! |6 g6 z& m# t; d1 i
update-credibility-ijl
) C  U) K5 D; x9 [( T4 C) t
/ {0 `4 F/ L5 H$ L
update-credibility-list
5 \: V* ?7 R. U

% y& g# P1 B7 N8 ]5 x
4 I; V% C, Q  F# N' O6 |; xupdate-global-reputation-list

6 D$ ~5 e( R/ D5 f, i
" q2 K0 C7 l1 e7 S8 U, [poll-class

; ?+ r( Q; Q2 t. c  Y: L$ n% g: W7 f& M! [2 N
get-color

, r  K) ^. b4 q2 e* t/ ?& X: F4 [6 H( m" N6 m
]]4 ~" k1 }" J; p$ G" |

4 r& E" H7 F7 p# Q# r+ V% W; R: H8 v;;
如果所得的信任度满足条件,则进行交易
( F% w4 G- ^- f! a1 |+ f+ i. p. t, _
[
. O! M$ c: A+ |$ k! {8 f
  I) t8 U& |) @2 _5 n3 T# h4 _6 f
rt random 360
. F2 {. K+ y9 T: G9 L

6 N; d5 x) j% i* Y4 I' Q/ rfd 1
6 `& C* {: X, s2 W

0 K7 u  R, q6 R9 I+ k; v5 x% E]

  a  e; c) v. F) m" i( v' e1 b, `8 _) b3 Q
end
! Y' ]5 Q  G6 v" T/ I+ [, R! V

% c0 x- n) g  ^$ t9 H# k- A) xto do-trust ! b; p/ n  {7 U# E# O( T
set trust-ok False* D0 }- s  I) R; N' N; P

! h4 ^; T$ f0 _( i# x  C
. I+ Q3 s; D: h2 j# F) j" g
let max-trade-times 0
+ {7 Y* V/ R9 P1 K1 |# wforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]$ T, k. J3 Q0 m# T$ c" g4 |$ c
let max-trade-money 0
1 e( U  m9 z3 A4 oforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
/ D8 ^$ H& Z& Q' X: t3 G3 plet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))) ?0 Z. E4 S- a: r4 p
; d9 f% }' [7 d7 z* r# U2 y

( v' e. N. j4 p; Uget-global-proportion6 R1 W; N  U! I1 J& q
let trust-value
7 X) d1 Y5 U5 Jlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
' N& S/ l+ ]: [4 i
if(trust-value > trade-trust-value)8 i% X- W9 S2 z. U1 l4 t
[set trust-ok true]
# J: m) }, I5 a% Lend
2 ]8 U3 `! s& c3 P
# Y4 j2 H6 j* {to get-global-proportion. J; X6 l, z1 d3 z- ^# h0 {3 y
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
$ O2 y4 v" N+ ^* b[set global-proportion 0]
/ e6 X- \- T0 y: g0 V[let i 0
$ R; a  }: h2 e/ y' C1 C3 Y" wlet sum-money 0
5 {6 j5 a8 s  O5 I7 g% Zwhile[ i < people]
$ \9 T- ]2 X$ B1 `7 k4 G! D- g' w[& f" I/ W3 K: N3 P
if( length (item i* w- E4 T/ d7 V2 P& N1 `
[trade-record-all] of customer) > 3 )

+ \* `/ X% X+ a' V: q9 j' T[
6 P, [! h6 }! w8 X5 n2 r' T0 D5 u0 B  yset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
' `9 d( u* I; L4 V0 \]
! e0 i* r7 [( V$ ^]
) U; V. d& U( g# H5 ?8 k0 d. a' llet j 05 H! N* L3 m- d
let note 0
1 d1 j' @' V. l% Q5 k, G1 ]while[ j < people]
: X; Y4 f* E  G$ ?6 {[/ w" j# x9 B, I( h+ r, ?: P. {, I
if( length (item i7 `, v1 i0 }  o. h0 x
[trade-record-all] of customer) > 3 )
$ `9 E1 \5 V0 y" u
[
& I/ z7 |" O& \/ L/ Difelse(item ([who]of myself - 1) [credibility] of turtle j != -1). `& A7 q: s* K0 V" \
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
$ x- T5 e3 X% ~* _* h6 C[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]" x" S+ r% K6 Y% L; O. y: w; A
]
8 A1 B* l& ~" k, x/ E, [6 `]3 n- p# K. }1 M' f( j$ M- `8 d+ b2 n
set global-proportion note2 G: g/ B/ L4 Q* o! x
]3 P2 x4 D1 Z6 M9 a) q4 p
end+ I) I/ Y: p# K: W! B

3 Y$ V$ H/ r9 q0 x/ L; Q7 _to do-trade
* o  ]# A: g) B; Q# p  [& R5 e" N2 b;;
这个过程实际上是给双方作出评价的过程
  Z; X) F3 S. B! n) zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价" T4 t0 _" K# Z  P
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
* l8 r2 l2 \' wset trade-record-current lput(timer) trade-record-current! A0 u8 I- c$ K( m
;;
评价时间# b$ d/ c8 @) m) y$ {' K+ h0 f- s
ask myself [
: z$ n) k% }. c7 ^4 [, @update-local-reputation
" n  k0 n/ y* `9 w; d* P: E; x2 Lset trade-record-current lput([local-reputation] of myself) trade-record-current
+ f* [- s0 Q* N$ V* a6 d/ T% W]+ ~/ R( g4 E3 |; p! k( \' p) G( O
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself7 _& s7 w: B( n3 z* L
;;
将此次交易的记录加入到trade-record-one
9 u  u7 b- G; f. X' \" cset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
0 D+ p4 J. B/ @( `% [( Jlet note (item 2 trade-record-current )
- l( B) w; {3 H1 e1 b5 Yset trade-record-current
! j2 a* i7 v5 e* {4 f! g(replace-item 2 trade-record-current (item 3 trade-record-current))

: M: b/ M& H( N1 D! _& K! wset trade-record-current
& j* g( x2 j" C8 z(replace-item 3 trade-record-current note)
. P$ g! {% H3 _6 r6 s( x: y' D, C5 r1 a$ t# [* c6 ]
, L% ^" I3 M9 L; d" Y% N
ask customer [- c5 m: _! n4 c; J: T2 F& o
update-local-reputation: q0 w* K) ~3 E$ u6 J+ q7 ~3 ?
set trade-record-current
" R$ E; D% t& j% |(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

3 B2 A" z. @, k9 S% ^) Z]. X/ |* X' z2 a' D6 j. M2 _5 b
* @3 [# I" y  u' W; w: @
- ?% n% R  ~( L0 }* R% g5 y9 O
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer, ^5 i2 m1 h5 t9 R# q) ^
% b) O2 ~. l( U* u, W4 u, i/ A* D
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
  y5 `3 [; o* B; v;;
将此次交易的记录加入到customertrade-record-all
/ ~* h7 q& v% F, }" [7 U0 L0 f; iend
; I9 }& S" @0 X  q" P% W4 y4 g9 h. r7 h  V1 F9 E9 w3 D& l6 i* V2 n! [
to update-local-reputation, f2 d; \$ J9 l; \0 v+ \( v( F$ y5 q
set [trade-record-one-len] of myself length [trade-record-one] of myself% k, j; h  i& j+ q; f) j1 ^
  e3 M1 b; f0 }& w( H
) a+ v1 q- @9 a3 W* e* @; S& r
;;if [trade-record-one-len] of myself > 3
# @+ `1 t( o7 U8 P; B
update-neighbor-total5 D4 w. }6 X& O/ o
;;
更新邻居节点的数目,在此进行7 u& I8 Q( x3 A# e/ `
let i 3
* B1 n5 z$ e0 l/ Ilet sum-time 0
6 n2 `- l  c8 p1 Fwhile[i < [trade-record-one-len] of myself]
7 f; s4 n( {8 u9 S/ _8 |4 d[
2 I; Z6 \$ s3 c8 A9 H# s# n; zset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
/ C& {( Q3 T. [: d: N0 i3 M. dset i8 s7 f9 D' }1 n& B6 ]( Y* e
( i + 1)
6 l7 `. n( F& y) j. X3 `
]  k5 ?& v+ q$ I3 E. \/ p
let j 3
8 U7 ]' a5 ~- B) l, W# elet sum-money 0% \7 f1 e6 ~/ [6 e
while[j < [trade-record-one-len] of myself]
( v- G' e  U- [[5 ]$ f! B/ T/ g9 G
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)
5 e7 L0 a1 ~# l8 |6 d2 N  rset j/ Z; v$ C8 i3 q8 @8 [- f5 U
( j + 1)
( P* i8 E3 s4 ]8 t# o& k
]" p" L7 [0 C0 Y
let k 3* O% q+ g) S. d# U4 u0 H
let power 0
, C; R- f1 n% H; m, F  I. U9 d; hlet local 0
/ z' z: g- H: k4 X5 e3 `8 bwhile [k <[trade-record-one-len] of myself]8 f6 p0 Q' J$ ^/ G
[. a6 e# q5 G( D9 }/ {5 |5 s' T+ \6 T
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 `+ L* @( @1 B3 m
set k (k + 1)( H6 O, y" }6 [7 X# |$ V
]
4 P* A2 A! o6 S$ p) \set [local-reputation] of myself (local)
! z5 ~' H: y9 n; ^end. F8 o1 Q; j+ ^6 A! @

  M$ I. Q) j# n: ~$ mto update-neighbor-total
" c* ~: E5 I5 l$ F: j8 x" @0 X+ U! C- q: L3 ]4 `) D  C) F
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]4 V% c# h' [" e- K( u! H

) G$ g7 R  q4 l1 `5 R& M/ V5 }
8 j" Y3 ^" `) W6 y
end: g/ O9 ]4 V- W7 p
7 K$ z+ H$ ^3 G
to update-credibility-ijl
3 ?, E0 v! l$ D1 u) S4 q) j  [3 u# F/ y6 [4 |0 L  ~
;;
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。: P% S9 q4 K7 s1 v+ l0 q# [
let l 0# u2 y/ I1 e, ?8 D- F
while[ l < people ]  o; H: i2 _; W; b9 _6 v! N& @
;;
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
1 t6 h) X, i8 [) {% s1 v[8 y; B5 b% [5 Z, E; A( z
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
5 X. l  D% W$ mif (trade-record-one-j-l-len > 3)/ i* b( ]3 N; E& i
[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-one0 d' C2 N* I* }* g7 n  b, q' I& }
let i 3( `' r' b+ D4 J5 |6 w/ y8 m& _
let sum-time 0" Y$ w; T& v/ r( ]5 ^6 D# @9 b6 i" q$ W( c
while[i < trade-record-one-len]7 F& ^  |: N* ?2 ~5 ~  _
[/ Y) c( I+ u) [5 b
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
. o. M' V( t, Zset i  \, Y- f8 c# t$ p  l4 l
( i + 1)
+ O5 Z* ~$ J/ a) {( u# ^
]
8 v( e, f0 r9 X1 V( flet credibility-i-j-l 0
( \) u0 w. O0 \0 @4 B9 ?. O;;i
评价(jjl的评价)
' f3 x' i5 |/ l# U6 \let j 3
8 Z  I6 F8 h/ e9 I! m! H: s* T+ S) Qlet k 4
7 ~+ u$ r9 \" [+ q. g8 i7 e$ Owhile[j < trade-record-one-len], v; E! w8 [7 D5 `5 M+ v# `4 ]
[. {0 A. D, m/ Z7 B2 t* m: N
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5 k# l8 X4 F& u$ a
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)% M' i* q" h1 }8 j* y% d
set j
4 N* i  [6 w/ ]  x& B0 [# T# ^( j + 1)
. q) l6 L: T" a$ o
]# A3 K/ O0 R& V
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 ))
! }- y3 d9 l% w, _( R) K& Y
$ q( ~6 ?: }: x! |+ N
3 ]; ~3 |9 c' b9 {0 t
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))" `* l  {8 c, d
;;
及时更新il的评价质量的评价
6 E' W8 B1 u3 M; a; Vset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
! i( H3 ^6 o9 r6 O( o+ s* Sset l (l + 1)" ?# S- e2 v% X) s% `
]
2 F2 g$ l) \  q: T. Aend0 m4 }+ r6 O& K0 e8 W- ^
; M. S4 u, S" K1 ~8 i0 g
to update-credibility-list6 D$ r5 R9 b, I4 e* d6 B
let i 0$ k; g1 C4 C. F+ _2 s( T3 o
while[i < people]( L" X: K, u/ C, ~: k" a: e
[' ]: I  T1 \5 S9 Q& f
let j 0
! h8 ?5 l! L/ B, K5 plet note 0
; ~9 E* g9 K( z0 U/ F  U$ g9 e) L' glet k 01 x$ u. H6 X( S& f# @
;;
计作出过评价的邻居节点的数目
) `  d" H1 s# Rwhile[j < people]* Z/ _7 o$ {' R1 \. S$ W
[
! M6 L" U' a5 B0 Z1 A; T: g9 N% vif (item j( [credibility] of turtle (i + 1)) != -1)
( u* ^+ J2 \, k$ j2 U  H! g  e  };;
判断是否给本turtle的评价质量做出过评价的节点
4 e: |5 w5 r% `( }; q[set note (note + item j ([credibility]of turtle (i + 1)))( N; U% g( d8 G5 t3 J3 }! j( j
;;*(exp (-(people - 2)))/(people - 2))]
& F) N$ N9 T+ l* [
set k (k + 1)1 f! [: J7 ]8 e
]
7 C# b$ V- Q3 `8 J* e; gset j (j + 1)
( d0 ^7 c' [' N1 c" C+ w]
3 `$ O* T$ e' \! s+ jset note (note *(exp (- (1 / k)))/ k)& j; ?) l8 F/ {: o( T8 O/ O
set credibility-list (replace-item i credibility-list note)9 Y! m$ r& A+ Q& @$ D' R5 L4 Y
set i (i + 1)7 \4 C: X. e" A3 ~
], N- P2 [9 \5 r* b+ r( v# t0 s$ o& E
end$ H8 K" n% E  s, l3 P3 H. j9 ]

. l' Y5 t' U& j& g7 k. }+ _to update-global-reputation-list# k! g% x: k, ^9 ~, s% d& M
let j 0: B* E0 s; p" p4 i/ O/ F
while[j < people]
* x4 a- [7 E5 e+ E[
. m, ^* M% W3 r3 i/ s1 H; mlet new 0! c. C1 f0 o$ I: z
;;
暂存新的一个全局声誉
9 M7 K" @/ I2 k  p3 j4 Clet i 0+ {) a8 P+ `; z4 s8 v+ `9 W
let sum-money 0, I0 f/ A- g! ^0 l
let credibility-money 0
  [, p# p5 F0 h$ [5 N8 zwhile [i < people]1 {5 ~# ]4 Q, u
[
! V- n, Z: q  f+ E6 a5 yset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))& \# y3 Q, {; B; }* O0 N
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
# v- w& l2 |$ f- x3 ?2 Wset i (i + 1)
4 z4 O( ?7 w5 B' V0 B3 Y; p8 O* S- M]* p' P8 p% q+ v+ ]! a
let k 00 G$ f4 r: K1 I7 C4 r/ ]. Y
let new1 0! R) k7 j4 y) m% ?
while [k < people]
& ?: }1 p0 Z" J, M9 M[6 Y7 e5 y7 e+ k8 d8 n6 @
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)9 T6 O  ?, u6 I( g9 s
set k (k + 1)/ M" @" c2 D9 A/ ]- m5 u% x+ D, j
]
4 j0 J6 ^' k2 ^9 B  ~& C+ k3 R+ Sset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
. U; |- i/ H6 H4 M- D1 f" y6 }& _set global-reputation-list (replace-item j global-reputation-list new)
, A) n) w& x* i- y5 Vset j (j + 1)
7 \" u. _% P5 |. B5 s, M2 X]/ d( i0 j' P% Z5 ^
end
; Y. t2 p2 _( E, {  T# D( `0 ?$ f
: x8 E, I. s+ d/ Y6 [6 g
' w5 u: {; b. \6 w" V* U) G2 V1 ^+ |/ b/ ?% Y: `+ D
to get-color% S' V( c5 W8 g$ {8 V: R; i9 q

" M$ Q) N% G9 k9 mset color blue

" M" p! G0 j# K' y: b/ Gend
; m3 Q% s8 L% Y" W4 Z) `. p
. u' k- E5 P' w6 v/ ?6 C3 fto poll-class; U- a2 |: j$ c& P& p( k
end. p6 P$ |' T9 Z. t6 p- S2 A) G6 ^
3 Q3 H* t$ B. d( F% x& |
to setup-plot1
6 `  [! j9 f. U2 `! G! C2 A' K& P1 V7 x! r0 f
set-current-plot "Trends-of-Local-reputation"
9 W1 |* d/ o! b: a& ^( c

% F' N, W4 s# y( C+ `) X( ]set-plot-x-range 0 xmax

$ [6 {8 M# k* i7 j) |
. i' @& B. u0 V# z8 d1 F0 f( jset-plot-y-range 0.0 ymax

9 Y6 b* ^1 {$ O- B4 c! oend9 h9 m. p6 q) r$ m1 E" _

6 ]5 o+ E1 ?( |# Fto setup-plot2
' ~8 J! Z8 u( v+ D! v; H' q
8 ]! m4 W* r7 t, n* P3 R( Y$ lset-current-plot "Trends-of-global-reputation"
7 I4 ^  V/ A: F2 C

- v/ e; ?* M4 |' ^set-plot-x-range 0 xmax

8 ^$ G# |% p! T. P5 P7 X
% D9 i* b4 |, Zset-plot-y-range 0.0 ymax

! Y) |; `- ]# T; [% \- bend
3 z4 F9 B+ @1 Z0 @
3 H1 x2 x# l5 c) {0 zto setup-plot3, z6 e9 _( n6 K

( M( ]/ y+ n- g& [# Lset-current-plot "Trends-of-credibility"
4 f4 n- o4 o% F
5 H0 c5 L' j4 v: ~* H
set-plot-x-range 0 xmax

7 y9 a2 P' w$ l/ t4 u  e3 T1 X/ |5 I. h2 A) U( t
set-plot-y-range 0.0 ymax
7 k$ O; p' |; }, [, N
end; A. K$ b5 d& {

/ h; C0 v" \0 E6 N+ y/ w/ Lto do-plots5 g1 W$ k; i3 ]  @
set-current-plot "Trends-of-Local-reputation"' }9 b3 m  R6 o  ]& _6 _6 L
set-current-plot-pen "Honest service"7 Z& p5 R$ L7 B3 I2 Q
end
) o% o% D' b- i! z5 I- m' P9 K- i0 d
[ 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 a$ R4 y2 Y

' Z! M% K: o1 y/ }/ W* D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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