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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:. j7 j' d( {& Y* q5 g, f
to do-business
1 s- S) U- |6 x9 p" { rt random 3604 W. g! K: H8 F' ~6 u; h% V# E
fd 1
$ I3 |$ p3 s. L ifelse(other turtles-here != nobody)[/ N4 `" u1 i& h
   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.8 v# A2 q0 s! U4 a' D
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
' O+ P5 f, B7 ?& b% ^   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer, s8 s: V, G/ i5 }! }
   set [trade-record-one-len] of self length [trade-record-one] of self
2 [7 t& _* v- F% h/ Y7 N   set trade-record-current( list (timer) (random money-upper-limit))1 ~4 M! a; ^5 g
$ \( R; ?* L, p0 E
问题的提示如下:0 ]+ q0 S$ L3 S& n

# R( q1 s& S4 D# Terror while turtle 50 running OF in procedure DO-BUSINESS
5 ?  g0 T" h2 m8 m  called by procedure GO' `1 u. c5 P- P* F) z
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
, C  X" z& a/ R
(halted running of go)& d3 l) D# Y' R; q4 {! ]/ ]: s

$ L' K' K' Q3 j* b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 I, U" {6 x) b4 X6 C' I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
' k6 ^8 g; o5 X, H- ^globals[
5 K9 r" U, t3 n* `, h3 Jxmax
: x2 X: w5 ]0 L! C" @ymax
$ F8 _( @" D$ {. U) i, Bglobal-reputation-list
9 X4 H2 X) h6 ?8 g# A
2 B" H) e, W, {8 W;;
每一个turtle的全局声誉都存在此LIST
( D! s5 ~8 k) m# R3 bcredibility-list
9 Z' k; ^/ O0 d3 i+ }/ v& G6 E8 f;;
每一个turtle的评价可信度
% {9 f- @8 L8 d6 @! E) {9 Thonest-service
: h" E5 w8 u( K5 f" vunhonest-service* x- _% f- r# [
oscillation
7 W0 N" q' A% H" d% Zrand-dynamic. I" u5 m/ q  H# P* @; }6 C: u
]) g& o4 s! ]4 C) o/ A) u, P- G# q! I

' ^5 J9 ^( f- V* s# t  uturtles-own[, F5 j0 P9 H2 R1 A$ v3 L
trade-record-all
& c: i3 W" h6 {; W$ |;;a list of lists,
trade-record-one组成
4 u; e7 u/ [6 strade-record-one
! l0 }$ A, e1 \1 G' a;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录$ ]' |$ r5 \3 n% _# v4 n

2 n) }7 p* K6 N, }" j+ y" ~;;[
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]]
. x/ Q* m( \9 t; }" _8 [( j" Ntrade-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]
* X! r% R; B$ b, w  ecredibility-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$ m# @7 f+ m/ R/ j
neighbor-total
0 c( n4 a  e8 ^/ l;;
记录该turtle的邻居节点的数目: z! ?5 S! E" ^8 }$ i( y3 V  W" r$ g
trade-time
5 A# \: P( b- R& u( Z9 [;;
当前发生交易的turtle的交易时间
) @; L- c) t( b, Wappraise-give
& u- a+ n1 b: i' q/ n" w9 i; O;;
当前发生交易时给出的评价, |; r5 Y1 c$ [' f0 g
appraise-receive: g5 g0 ~* ~; q% o4 e
;;
当前发生交易时收到的评价
% }; {% |* i9 F+ c# V+ G5 dappraise-time
% G9 I# H/ {7 ^8 T. Z# [' n% z;;
当前发生交易时的评价时间% ^; N% F1 @% A. p
local-reputation-now;;此次交易后相对于对方turtle的局部声誉- ~7 e  a, c: d8 A- B( I, e
trade-times-total3 R- {0 r! A* o6 _9 y
;;
与当前turtle的交易总次数  w* [" L" J* v5 v3 ]
trade-money-total
; j% u  H; o0 S  c9 F- |8 n9 M;;
与当前turtle的交易总金额0 D  z, ]+ c  T& |& W% ]: W
local-reputation6 [% E4 d  l7 \4 g8 b4 Z; O
global-reputation$ ~; x# [9 h& V" J6 O
credibility1 w. m0 r/ ^( O4 S- H
;;
评价可信度,每次交易后都需要更新7 i$ P+ J# ?) e: N  I% u& f
credibility-all
5 `6 H* r( }% y( |( e) c;;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
# ?  ]! G  G2 ^! @. M% s( a8 P' Z* b4 ^- E* R- B$ _& v4 k
;;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, P; J' E- j0 H  `! f3 e
credibility-one
4 r1 r9 I/ P) q& y& w% s1 @;;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
, Z; r9 T. {. K: C, l, R  uglobal-proportion
: c$ K  W- y( K1 d# E$ Ycustomer. u, }4 ^6 E, x) u3 R/ T
customer-no
) L! o: _- i  x- {7 |trust-ok
9 ]2 y5 p7 ]! ^trade-record-one-len;;trade-record-one的长度# \8 b5 X. w5 P: `8 L+ i
]9 `6 V" H; d' w2 M( s

% P2 ^2 w: Q; i8 b' s* N;;setup procedure
: B, |3 [8 L8 s# h- ?$ y8 S6 P- I7 z4 v2 i8 ?
to setup
$ Z6 l' z- M1 a. ]+ O! j$ s. g: o, W7 C- X# {) U+ W9 x5 O; m! `  w. z
ca

( g& _& G0 H& R  @* }/ _1 J, N+ A' C' O% Z
initialize-settings
. }, ^' {4 d1 m- D- z; `6 p) j" t

; Y, x; \4 D8 ]! n" t% e, W* Scrt people [setup-turtles]
5 \9 a3 C, |9 C! o* |1 X
3 D, F9 J# S# P$ Y) l
reset-timer
% |- [6 d$ W1 W5 V& Q- S9 z1 @0 x
  J  {( e) \# w6 T& Q/ z9 c, Q# c
poll-class
; L4 K( i" K! r( S- B$ \

) W8 e  o# M9 c( f! f* D  E/ Psetup-plots

2 K) ?5 z: c1 b% r1 i
8 O+ T: V: g" Z3 p. Q& p8 qdo-plots

, X3 f0 |) U1 C6 Qend, r2 r$ ?$ e% v; |& M4 R- @* |$ C! a7 m

) G: g1 [0 }1 s* g  ~to initialize-settings5 @  c- W+ _1 V- y' T% _  b% V
, C8 A; u. w' k* l$ r- y
set global-reputation-list []

& t0 H" Y% r: n/ M- ]5 N+ d8 u! a; s3 _+ G4 A; N( p. F) H7 o+ ^* Q
set credibility-list n-values people [0.5]
; r9 i) ^( Y& f+ M( f0 R0 H; P* ?

. f8 }' \" e/ @7 ~4 U  m$ rset honest-service 0
! ^. B, T. U! ^: \6 P. c8 n9 h
2 A7 W+ }) x; [7 }
set unhonest-service 0

4 X3 }. U5 N% q% X8 S! G! n2 p# m9 ]+ K: Q
set oscillation 0

% N' e5 b( D. @1 B# Y
8 z1 U- o5 d# G/ U2 J$ }2 a7 {+ bset rand-dynamic 0

% c' @. t: L4 S) z1 f0 nend
& o" Q! d4 `" p& G
$ z( q/ ?) ?, }3 \) q2 y" nto setup-turtles , n- a2 B. W2 k: h
set shape "person"* k0 c  S* M7 g" e# i5 P+ |$ z0 h4 G
setxy random-xcor random-ycor
! d8 L& }; ~- y1 p) r2 T( F& Rset trade-record-one []
% `1 q1 P2 M: R/ D% Y2 z* a; w
) e( i/ R5 `1 X
set trade-record-all n-values people [(list (? + 1) 0 0)] 6 ^7 w3 c, ^, e4 Z* G8 \5 u

# c. T, I; ?: C7 vset trade-record-current []9 {8 T; d7 ?6 \+ c1 [9 s* X( i
set credibility-receive []" A  b3 C2 \0 x. R
set local-reputation 0.54 d0 d; z1 p  a$ b
set neighbor-total 09 h+ f) C0 y& O( |- ]
set trade-times-total 0
3 Z: v1 ~& p$ U9 p0 D! E5 v6 sset trade-money-total 0$ r& P+ B  U' y! `% G+ }
set customer nobody
1 f* l4 {) u* G/ j7 pset credibility-all n-values people [creat-credibility]
9 Y$ y# ^) M( o) L3 U# fset credibility n-values people [-1]
) f# Y; X! |1 ?get-color( \- T* x2 Y) X. M* b
# D& ^3 N1 A* F' C
end
% i$ _* U+ S; a& ?7 [+ S
! n& A2 I/ v+ k0 h* gto-report creat-credibility
+ T/ |7 H# l+ Ureport n-values people [0.5]
; o0 c# Y( S  y+ E& ^/ K3 P! J2 vend- R  X6 H; j# x0 a" N

) p3 Y9 v# M& }! Y4 ~to setup-plots
1 ~3 y7 M! }3 I/ ]
$ ^: U1 U+ L! \; C8 m! f$ Aset xmax 30

  Z$ \- F& H) R& J5 t; v
6 r9 h2 \' G2 z6 X6 P: eset ymax 1.0

7 ]: ]3 M( E7 V+ ^
- n" C8 K$ @9 L  M* [/ Oclear-all-plots

, _# V2 E+ ]) C/ Z" o" B
, g9 r1 }% r; v3 W1 }setup-plot1
3 c0 y* H% U2 H$ O- D' ?# B- I
0 A0 d/ M9 p, g+ {5 [5 ^
setup-plot2

4 M6 R1 e) I1 I" @' y  \3 ~/ |) N! [1 a, W
setup-plot3
) y3 G8 |6 h2 V; W( }7 h' a* }
end
3 P, S) k1 ]1 d* [/ T6 I9 T% \9 L% U- n* N( O  \* A
;;run time procedures
: I. {7 V  H# z/ t/ J8 A  N
# |5 s7 q9 ?5 Cto go3 A) o: n+ N3 b3 h7 A6 S
# Z3 S- i; a# B& h  f* [2 @
ask turtles [do-business]

2 Y0 C2 u/ I, U- Nend( T: r1 l+ ]' S1 A

& I' `2 ?! f5 uto do-business 1 @8 n1 C* f9 f

3 U; s+ m# m" b! o9 r# |
, @9 ^: h8 s8 g* }- U5 \rt random 360
7 Q; _9 b: u' }1 i7 ~1 l2 i7 R

. R9 p: g: z* W/ g/ \fd 1
/ s+ O3 f  M$ B' V# s
. m7 N0 d! ~% K" J% @) M- F2 d
ifelse(other turtles-here != nobody)[

  I' `1 k3 l) x8 _
5 l' m6 K8 s% Z) Q% W2 N1 ]set customer one-of other turtles-here

$ E" v5 }/ w4 h, z" P( Z
9 W" u& F# e" ?. ^1 q- l1 Q5 L;; set [customer] of customer myself
8 Z2 Z" A1 C8 d  i% L9 u% |5 g

9 \3 P' S/ l, Q% T" F; Kset [trade-record-one] of self item (([who] of customer) - 1)& e/ i4 ~! D1 m5 f; g, b
[trade-record-all]of self! f5 x! e) W5 W( S" }! G
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

1 O! |1 s1 ?7 Z5 B( H
& }0 N- B: V+ \+ Cset [trade-record-one] of customer item (([who] of self) - 1)0 I, ^/ A& O1 {* D
[trade-record-all]of customer

/ @& o% r7 N1 g$ t* ^: e
3 T" @: J5 V7 D+ M; Mset [trade-record-one-len] of self length [trade-record-one] of self
# }- y" }! }- d& F

# M+ Y2 ~  t& d2 e7 B& l, A: Sset trade-record-current( list (timer) (random money-upper-limit))

+ r" p  C7 m, M/ D# r$ f! `$ Y2 c" C
ask self [do-trust], }1 y, ~7 s  N" a( A
;;
先求ij的信任度+ P* _% Y( n! e) v4 b

6 n3 }& l# x4 n( \4 E% pif ([trust-ok] of self): L7 D$ Q2 f9 D3 [! j
;;
根据ij的信任度来决定是否与j进行交易[
" N4 B% `0 t, N  b& p% a5 }" E9 jask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
& M5 Z2 K# x7 B1 A& J4 u- v0 a
2 D: y% z6 I/ M0 C( t[
) J7 k" O# S4 f  B' T3 R9 \' p

: }2 \& s3 N- e* w4 `0 T/ pdo-trade
5 H8 Q2 j# _8 f
: C. V( L8 V$ K$ J
update-credibility-ijl

: e7 O* K& I2 `0 w
# e, U/ k( L" }: d, I% Aupdate-credibility-list7 n4 i* s( C" |9 H, Z8 Q4 N

; R# p1 r7 Y9 A1 i/ t2 w' W
7 w4 g* b1 P) d1 h/ K% u$ N# fupdate-global-reputation-list

% N6 G8 G) C7 W2 g3 r, K9 _. s4 ^3 h6 ^& j$ V6 j
poll-class
/ ~8 f& N' P+ k( j2 e" {
5 a; Q+ W2 }$ I6 q1 n0 _; Q/ i$ {. Y
get-color

1 {6 f; K, K1 B7 [4 L
- c; E* {  F% j2 l* i. _+ T]]" l( O; Q& o* w- \3 l) Q2 T

) G$ {& W% B  P3 O6 j! B7 P;;
如果所得的信任度满足条件,则进行交易# g4 _' Y! H9 t8 ?

7 y* q# b$ ]- O( k[

6 ?/ z9 Z( c5 H0 n, a9 A3 o8 o
' K, v5 {! r* m( Jrt random 360

) X  j$ f! z, W9 e, k9 k8 {' F, v
' N  P8 ~& V$ w0 ]8 G2 q8 |; p) Xfd 1

) f7 j  B# Q+ S" h6 M; j" A+ W9 |. X
]

! y/ U5 j, ^' g2 j6 r  ]. d
) d& u0 T5 ^$ o1 uend

6 j( p1 |7 y6 ~6 A; D' c# O& U6 r7 X: T+ s
to do-trust . [- f! t  j, C
set trust-ok False
0 O9 R1 }9 }2 r5 S- B" Q- G8 M, r/ `9 e( a- [; v
9 A( Y1 |6 v2 L  W# ~2 X0 Y/ ~
let max-trade-times 04 [) a% B2 O. D# B3 P$ S5 s
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
9 Y4 E% E1 P1 W8 u( Z  tlet max-trade-money 0, T; K( c3 D+ q6 t
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
' [: ?/ T! q* q- c# \2 Vlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
6 m9 D% R& E( ~8 l) R2 z# t" m  k8 ?/ [
) K4 w' \) J5 I
get-global-proportion" V* n- h9 l8 ^5 `0 W  k
let trust-value
, p" p/ w3 ?* E, l! Clocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

2 f5 P) e! W$ z6 ~7 U6 ?9 ~- ~if(trust-value > trade-trust-value)
7 e8 u# ^/ z: b7 {[set trust-ok true]
' y9 I3 `$ ~' T% l- {end
/ j" F7 g# X* @6 k5 q6 G5 |" i- O) L
  i* u! T& l; ]' ~to get-global-proportion, C) r  C  f+ |3 M  I; H7 j) q0 O
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)# l- _! U+ @0 j
[set global-proportion 0]
! c6 M) e7 ^  t" e1 |: F! \* o[let i 0* `0 v( p7 ^! ]& @0 H- E6 e* ^
let sum-money 0, b+ m. b& A7 s) F
while[ i < people]. `, p$ p+ `3 l1 h
[! e: ?& ]0 {, a$ I, E7 m0 J* y
if( length (item i& K( B" M. ^3 i. [- u+ `. B9 t
[trade-record-all] of customer) > 3 )

0 X2 f# z" a; x/ w1 Z% f[
4 ^& c1 B# n7 s- B7 d! U) `  Nset sum-money (sum-money + item 2(item i [trade-record-all] of myself)); w5 W/ W, H; \
]
+ c, z9 t) I1 W# L  G5 O" c  {( J]) F" S) P4 s0 q- D1 K: [, ^
let j 0
" p4 |, T, U2 v: a; @1 k9 Qlet note 0( ]& w/ E9 }! k9 `
while[ j < people]8 k  x6 u' `5 K+ i" \" a2 l
[
( [* d. g0 @- G+ zif( length (item i9 O5 X1 \" o' u; K! h% G
[trade-record-all] of customer) > 3 )

! \/ p" U* k0 G! Y7 C. N[7 R$ O0 P# x9 d
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)% k/ j' K; I) _% m6 ]
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
2 {. ^4 X* M3 U0 g[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
3 Q2 _1 }; l5 C. x]; g! y% C; a3 P3 R5 r1 d
]& c% T# ?2 M2 m# I( z
set global-proportion note5 k6 H2 F0 A& Q8 M2 W, S
]
  I% q  C# W: Y  R, i* b+ Hend5 @0 p6 Y: I; {3 M* N

" ]. f! x" A- w+ j+ Z7 Vto do-trade: |' Q1 \5 g5 P3 R; ]+ P- R8 k$ P9 Z
;;
这个过程实际上是给双方作出评价的过程
$ o: V5 ]5 U* ]6 [set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价* f. G: x  k( l2 @3 k9 d
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
8 z  @$ A& a4 {4 Z/ oset trade-record-current lput(timer) trade-record-current
1 `5 k+ v; n+ a0 e;;
评价时间
7 V! K" ?6 g, Gask myself [7 u, U4 |$ ~  I' i' D( U% V
update-local-reputation3 F5 E' w5 Q/ S  {8 ^) b& p
set trade-record-current lput([local-reputation] of myself) trade-record-current
! |) ?' Q4 \1 Z; _- G]% G+ Q1 c& O% I. j* p
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
$ n* N# O4 M" h;;
将此次交易的记录加入到trade-record-one
* E& f/ G" ?* t' Iset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)& l3 b9 G& m3 J6 ?4 [2 _& F
let note (item 2 trade-record-current )
8 G/ y4 y0 |. e) i& A2 bset trade-record-current
$ J% F  U2 ]& v6 h6 P(replace-item 2 trade-record-current (item 3 trade-record-current))
0 M9 J* }% ?) B( q1 K$ X. y; ?! n7 u
set trade-record-current
1 Q' _. w7 o! w; c* H(replace-item 3 trade-record-current note)
# B5 g/ g. Y$ m1 N% w6 H
& @8 f3 O- b5 G5 S2 o

: I; ~- R6 _9 |$ }, |ask customer [
; Y; {; T9 E9 R4 Bupdate-local-reputation! f4 i8 f' p- y
set trade-record-current
9 G1 ?2 v9 G# Q4 U0 S8 L(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

6 J, O9 G( e* `8 \5 ], C% B6 L* d]
7 X6 X( L! r: q5 }) Q
) M3 j# n+ r) |' A/ D6 O4 v

9 t% J9 x" ~7 q! l3 v8 m0 Zset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer- o2 C6 B, M6 z/ ~0 E
- }1 h$ l6 k" L
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)): R- A" j; j) s! A% c
;;
将此次交易的记录加入到customertrade-record-all# t, N# d2 x" P1 i1 b
end! H9 w% R8 z  W1 O
$ G* ?( D* v' y6 \: j
to update-local-reputation0 m/ l; s8 @4 k
set [trade-record-one-len] of myself length [trade-record-one] of myself
$ ~' D; |0 {  @( L- Y/ E1 ?
# S" o' X6 U6 n7 A* y7 F. c( T8 ?: y* M6 B4 P8 E: K5 P& |! }' e; {
;;if [trade-record-one-len] of myself > 3
4 [! J+ E- F+ r1 F+ e
update-neighbor-total
) ~% R1 c7 d/ M- P& E8 x;;
更新邻居节点的数目,在此进行
! o/ G0 v8 M, u: y) mlet i 3
+ }: S: f" y+ f' x) j# Clet sum-time 0
8 c' [& g: u( [& Swhile[i < [trade-record-one-len] of myself]) ?) m! Z  w* E( N. }0 `! w9 i1 Y
[
# E7 T. T$ [4 a" ]) b! Aset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
- ^6 J0 Q# S6 m. sset i3 c0 g' C4 p, i/ ]/ A4 r" F
( i + 1)
7 X3 Z7 Y6 V( K9 ]. B6 R
]
3 [. ~$ B- }$ f0 Hlet j 33 A) [# V' t( s
let sum-money 0# y- f* {# B- _  X. ?( Z
while[j < [trade-record-one-len] of myself]
" E4 M" ]: J& a[( c  L' r2 I+ ]* I
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)* p/ q8 d$ \9 `9 O" y+ B
set j
0 @+ m2 g! r+ y: g6 N. W3 O0 x7 B3 [( j + 1)
" ~3 m6 |/ i$ [" F6 r
]! D4 K. B, ~- J% ]! n& c
let k 3
& K( G/ @% g* M7 e; s5 w4 Z% @) plet power 0, \8 N$ v* {- q, K3 u
let local 0
) }3 {) H  g8 R6 Z! g4 d7 a6 s; Ewhile [k <[trade-record-one-len] of myself]
& _4 ]& y+ W) Q! J, w[! D& ^/ E& h+ f* B
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)
$ U& z. k0 }" x8 s/ qset k (k + 1)
1 c/ Y+ }' d6 ?& I+ V. m- ]]0 Q5 v/ B7 |. W1 @
set [local-reputation] of myself (local)
* o* |" j& V6 n! eend
" ?! s3 v& F% c  g2 ?- P* G, J, z: T+ \# O" i( E
to update-neighbor-total2 P8 w0 C: b/ m: M; Q3 t
$ U% [5 I1 Z0 l7 F. l  Q
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
6 R; h3 ~  z5 f$ s1 [2 W$ U  v$ H& k* c3 Q$ m

8 E6 I  ^+ x2 `& G4 S* Gend
' }* |5 \* K  ?. r0 o
, t! z8 e& P& G9 `3 \to update-credibility-ijl
, K* M  b0 h# ]( B/ s) W
; |! |. E6 [* {" ]- u;;
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。( \, y' n1 d. W2 R' d
let l 02 o9 f8 G5 U6 b1 ~% k
while[ l < people ]; V' g/ q, v( w
;;
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
" u2 D: _: w  W[
9 S" Y4 u! y( {' ?1 b( o0 slet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
; R" w$ j$ R* v; S  G  mif (trade-record-one-j-l-len > 3)
) u2 P: i) ]7 l, s$ f! J[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-one4 k% |: g7 i) p; Z& P0 L% ?+ h
let i 3, r% r: e, H% d- ^" W+ }
let sum-time 03 F' S. g7 b* w1 t1 O, A( Q. ]
while[i < trade-record-one-len]
- a* Z' }! F% X! Z[3 }$ C$ g$ m# P9 @" _2 O0 @$ d: M* K
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )* l6 d& Y+ T2 n2 K
set i
  K  N! S, v) R( i + 1)
1 P: q% {* a9 B) o5 |! C. K# Q. r
]
, \, E0 k+ Y* Q% w% ~* a' {let credibility-i-j-l 0
! h+ }3 s" |+ U;;i
评价(jjl的评价)
' y% n! n$ v5 _( L0 Slet j 3& r3 ^! V5 h- f' j  v: @
let k 4' S5 u- z. ~6 \, u
while[j < trade-record-one-len]
& i; F- _) |# k) m$ W! c0 [% t[
+ M0 c; N, E0 g+ n; m  @  s/ Ewhile [((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# G$ z" P4 U6 Y  b$ S* V( D
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)
+ t+ c9 B) p1 u" V( i  g9 v# ^set j0 q4 l3 z$ \, ]6 D
( j + 1)
+ E( l2 I6 N) w) O! v: ]* X4 a
]8 z8 V$ U  |; m
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 ))
- A/ d( b. q1 N( K/ N, P, d+ u
9 y+ C& i9 p1 Y/ T

: v" D: H4 P& y* y5 `5 f" `let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
+ P5 i- {; U. H) E9 b4 U2 U2 {5 p& l;;
及时更新il的评价质量的评价
2 w* Q& s% K0 L2 S/ t4 P1 t# Xset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]$ B& Q3 z4 R+ J
set l (l + 1)
9 S5 j3 W* g+ P]
+ d2 t% M' M- L, cend- D' ]" F. `/ F1 c% p* v

0 S4 p) z& q- F( y& Ato update-credibility-list- S7 i1 _3 l% }6 }5 Q( A. o; x1 n" N
let i 0+ V5 Y+ M- |) C1 u
while[i < people]
& |( C% ?5 p7 Y" G' H6 n[
, v. P# P0 [* clet j 0" s. ^: m# X# Z1 }
let note 0# H$ c* e$ b0 _
let k 0( O" Z, m6 @( V5 k. W2 d# d
;;
计作出过评价的邻居节点的数目
; V1 U9 S7 T" q1 hwhile[j < people]
' H3 D, W  x! D1 `8 d% Y[, t4 J, [) g  R& x1 J. d* F  d" B
if (item j( [credibility] of turtle (i + 1)) != -1)" U3 O; V. @1 k. s: L* T
;;
判断是否给本turtle的评价质量做出过评价的节点4 G4 M1 M/ j' U; w5 g. s6 ~
[set note (note + item j ([credibility]of turtle (i + 1)))
4 x( W3 R& w/ O: Y3 t$ i% f;;*(exp (-(people - 2)))/(people - 2))]

5 I# L0 _! g8 ^, b5 o8 B) Pset k (k + 1)
% }- Z/ d& s1 ^5 h]
% [; T8 r3 I: `9 [2 l! _/ Mset j (j + 1)
+ N6 R0 |# o& ?1 A. h$ `' Z]7 C& b0 c* U2 F0 @2 f, |
set note (note *(exp (- (1 / k)))/ k)
' g* P" L3 l2 ^% _3 J2 dset credibility-list (replace-item i credibility-list note)2 ], @& w; j& ?, i) W/ I8 F
set i (i + 1)# o5 P! y% r* j' K' L  n
]
% x  F5 M2 B7 i& x8 M: S, ~( rend2 f& \# Z' u0 q/ i6 H

. p6 U" V3 f6 g! o$ {0 mto update-global-reputation-list+ S" O9 C$ |4 P7 Q" F# X
let j 0. h8 E5 [! i9 H- j8 q  U
while[j < people]
# d( F( p8 r5 M7 r; v[- A* F. K! \2 d( @) n
let new 0. }1 K8 s" t1 h
;;
暂存新的一个全局声誉
$ t9 B; g9 }2 q: p1 S/ Alet i 0: [* x9 \0 P; A3 ]
let sum-money 07 s  \& b& Q) }( [) ?9 t  v' O/ M
let credibility-money 0
* N3 M8 G! f. \# _; H! U; p% L) Awhile [i < people]: m  v4 ~1 B' n# i' T6 x
[
& a% J4 }- F3 A4 yset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
3 T2 a. D! ?. C: H$ b2 oset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
. Y! f# e1 I# l' G. Fset i (i + 1)
' O9 G  w' L9 S]( ^+ \' x( f& `  @5 {1 t
let k 07 Z: o$ ?2 |9 F* M6 p9 H
let new1 0( B* d- |+ a6 @' R
while [k < people]
) A* q- a+ @& O8 s[- k% b5 G4 z) x- N
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)2 V9 z1 J! d: {, J
set k (k + 1)
, v) e, @" S7 ?) c9 ~% k]4 X/ }: S+ S, a# x3 G1 t  e9 {
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ( P0 C5 X" i8 v) S2 G; [. ]& V
set global-reputation-list (replace-item j global-reputation-list new)! U9 _2 s& X5 \# w
set j (j + 1)
& p! p# ^% ~" P]/ _, Q  H% M( q% {
end
0 {; p$ V; M5 X# N0 T* E: n! v2 N& S. S/ \& \. k* p9 u' i+ V
! f% c9 X, @6 `' q) W7 `6 U

; W! b0 _! C  A! P9 \( q5 c7 R$ P+ Qto get-color$ U8 I6 _4 z" V0 K2 P9 y

* `( ]' c) N" `4 [+ Uset color blue

1 B) w8 Q1 u% T: y9 G% uend$ ?# ^. G" y) j
" w+ ]! d4 V7 Z  o9 S/ d* W" y8 b
to poll-class% E' c) t( Q) n/ p4 u& E
end* r" d& f' e  ]% {
( S2 Q; K# N, e) e
to setup-plot1
3 o4 _/ P. J0 V2 u; H. V$ J" t2 |; i) W
set-current-plot "Trends-of-Local-reputation"

$ Q1 `' s5 U5 K7 x
- N9 E3 U3 [, v5 Xset-plot-x-range 0 xmax
4 U# y- @3 _  \% F! V  k  s2 r
7 q# l( ?8 C: p* S# X
set-plot-y-range 0.0 ymax
6 W$ p6 ?+ V9 r- x; X" _
end
2 D3 ^3 H: u" ]/ j, R" L; P' q5 K" K$ W4 O* z" T# Y& i2 X
to setup-plot2  r9 G# h# h! f7 U4 F% n
+ u% q* j; C$ b# p) y
set-current-plot "Trends-of-global-reputation"
3 {& g' z, ~! q5 M' F3 V2 F

$ m' m) p- C) L# ~4 Mset-plot-x-range 0 xmax
3 S2 o8 g0 f: J) |6 K- M

2 @" E/ e+ o% f  z; Hset-plot-y-range 0.0 ymax
! ?" `: D7 F6 U/ G# F" M
end" |' c# E; K! @& P0 C7 W( Z
) }/ ~" w9 W5 {1 I) _; h
to setup-plot3) X# C' |& x  {" |/ W

: f  n; s. w; G7 F* sset-current-plot "Trends-of-credibility"
$ Q8 ]. r  C# t+ M/ W4 Y4 G7 |

+ X2 R; S" y9 N. s; V/ Z* yset-plot-x-range 0 xmax

" Q6 S. @) F1 |) L7 ]- J3 r3 A' @7 r0 S0 S' ]5 @
set-plot-y-range 0.0 ymax
; Q4 G# f# ]' u8 y% z, d. i$ d8 `
end
0 a, `; F% q7 }9 q3 @% R
: R. T+ V6 J& I) F. k& Ito do-plots" z. K& R4 U& O6 k' h$ r. n: f
set-current-plot "Trends-of-Local-reputation"
" K: M; o3 u) _. |+ \6 V  zset-current-plot-pen "Honest service"
" o1 b& X; t- g0 e# M& ?& w$ _end
$ M" A) ~" y/ w0 [. f/ {: U$ @" h/ 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.  a' C- Z$ B4 d4 z: D( j5 G, u

- Q2 H5 M/ g& C% M: Y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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