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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:
+ I* v$ U7 R( H3 h& a0 ^to do-business ( R; }0 r# g) e7 ]$ X% O5 M9 J
rt random 3603 _4 Z/ o0 E& V% b; Z% t) T
fd 1+ `$ I7 }" E  {2 p$ n
ifelse(other turtles-here != nobody)[
9 v6 N( h* [6 j0 n$ }' h9 r: 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.' U# d7 k' P( ~' M% z% p. g
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
* W! M4 h# z) Y- z1 I* C   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 U( e! Q( H2 B7 ?/ h5 B
   set [trade-record-one-len] of self length [trade-record-one] of self1 c! f& a/ B0 a- m5 t) }2 O
   set trade-record-current( list (timer) (random money-upper-limit))
- L! V$ i% n5 l$ z7 M6 P3 k  Y8 O: B4 F* F) [1 F% P1 z
问题的提示如下:# E$ F. y" J! p

. J) Q  L4 h6 Z7 u* u9 V1 Werror while turtle 50 running OF in procedure DO-BUSINESS/ B  w. i3 L# s
  called by procedure GO
" r5 `! B/ M5 nOF expected input to be a turtle agentset or turtle but got NOBODY instead.2 z! K  f( r' O% M( R) |5 i
(halted running of go)% y7 C, i; _3 b

# {; S. O; R; H* d  e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 R) J/ J* A% X$ F" Y# w! P) 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0 w( R& E* p" c
globals[9 O# z3 _- r& X# m* G
xmax
( a* t- D* u4 t$ Q  a# x4 ^ymax
( Z. `# t( Z$ L6 `9 mglobal-reputation-list
4 {7 y& Y+ h0 t
) g! s2 D  [6 k& d! d% r9 Y, N;;
每一个turtle的全局声誉都存在此LIST' W! Z* {) |" Q6 u5 F2 d5 f
credibility-list
+ G% h6 g+ K' A$ J# v& C2 O;;
每一个turtle的评价可信度7 W7 q9 j5 Y, _0 U" n4 G4 H
honest-service. K" \$ O) t; [2 r, Y& W0 T
unhonest-service
" h* X+ r6 m4 }8 P  soscillation# P' I  B1 R! y. Z# r
rand-dynamic9 |& g! O- l  o
]
, q, X9 a4 B8 B8 j- o2 d$ @* o% l: @; b5 \
turtles-own[# X& a! v3 L! r$ T6 H, ~( v
trade-record-all
/ i$ B) H0 ~0 f( B8 d" ^; r* Y;;a list of lists,
trade-record-one组成  p/ R8 \" X; H) g( Y( d
trade-record-one  y  R3 {# C, D' r3 p
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
4 K- I( b/ P" A9 b0 l8 b8 f8 [8 l( e& f: M
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]" T" ~  H. P) @( k4 {- Z
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]3 `& y- j8 \1 w2 \) Q$ g$ `
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list3 I$ T" a  C4 H1 B4 ~* Z6 t4 T
neighbor-total
) Q* K' _: x6 Y. A1 W;;
记录该turtle的邻居节点的数目) T6 R2 c# {& F9 I0 Z$ U& _. U( A( u9 ?
trade-time( @$ D$ }( n9 F$ G2 F
;;
当前发生交易的turtle的交易时间6 k+ N  ?2 c# X1 s0 F( o( c% x! f  q
appraise-give; h  h; Q! F5 G' t) Z% S2 K, B1 Q
;;
当前发生交易时给出的评价
1 b; ~, ?. n" }0 @appraise-receive1 n4 @7 S8 L9 e  o" u
;;
当前发生交易时收到的评价
1 H+ y. Y# a3 l4 Aappraise-time
5 ^9 L# A4 }- L! d7 u;;
当前发生交易时的评价时间+ Y* ?6 o9 v9 c; n: w  o3 G" `, U- E
local-reputation-now;;此次交易后相对于对方turtle的局部声誉: k8 E* n" P- ~, R5 x- o2 P' y; o
trade-times-total: X& ]# J9 ?$ u% h
;;
与当前turtle的交易总次数
9 N9 c- `, t  N% ]; D3 j. Otrade-money-total
6 `0 Z6 y' u0 o;;
与当前turtle的交易总金额
( N3 ~+ s4 ?/ ~* Xlocal-reputation
! V2 V) K1 l  j0 o3 M& b4 E. h" u! Y- vglobal-reputation" S' r# P! s. L0 y
credibility
' ?4 W  c1 t/ o1 E8 z' a5 R: D;;
评价可信度,每次交易后都需要更新
; N, p$ L9 R# m1 c6 c. ]0 scredibility-all/ d, V- t4 M6 u' v: _' w0 K
;;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 H# T/ f* y5 V5 Q4 @! R& q# h- n) O& k8 R2 M# U8 i2 M
;;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
( `) H1 p* g: Q& I4 K5 m4 ]credibility-one7 k1 O1 s- U; N4 J9 p, b
;;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
# \6 k: g7 n! J0 ?  v$ O: dglobal-proportion
. a2 ^# W7 J$ F6 s: pcustomer
0 Y+ a- f, j; Q5 ~# Q' P8 ~  bcustomer-no
/ k' k0 f8 y6 M% {  d; Ftrust-ok# Q1 m! G2 \' ?. q# }7 A3 ^% r
trade-record-one-len;;trade-record-one的长度0 O& S# ~1 Y3 X2 j* X0 `/ ?' ^
]" g0 H9 [7 I5 K6 w
+ E' ~3 b! K3 L( A5 e0 j" i
;;setup procedure. Y* N, j* ^" f7 Q! t

5 \+ _8 ^" z) S0 Ato setup
# Z; Z- Y: S$ u7 r" b2 U$ H4 \
+ V/ v9 z8 w6 n& I4 Y( Cca
; m" R1 [+ S- Z# k

+ f( k) J% t+ E% M- I9 c! oinitialize-settings

, J8 \2 D) S5 R5 b' a# c5 x9 x
4 J: j! X) o# z7 \* jcrt people [setup-turtles]
1 }6 Q9 e5 X( K0 |2 O# o" r4 w
; U+ P! P2 Z1 C" q; b! A; n3 Y
reset-timer
/ c9 Q% l& a. b3 y7 Y: n! ]# k6 t

5 N( W" ^% Q& v8 Fpoll-class
5 ~+ ]1 _% ^  E/ ?9 }0 |

7 N0 X+ J# T, g1 X0 E4 k' _setup-plots

9 H7 {& p2 I! @8 }* s
0 K9 G9 N/ v* Sdo-plots

* y# v3 J5 B% y; b7 w+ T1 Tend
1 g9 o) P3 B, `2 a1 }7 u7 `
8 K2 [% J5 h8 I1 }to initialize-settings. j  `- S2 r+ R- B7 |1 J; x
. C! A5 u; Y7 e5 r
set global-reputation-list []
1 d5 V2 i! r7 V: `' ^

7 b( U  Q5 I- U8 eset credibility-list n-values people [0.5]
9 c4 m1 s2 w. z2 e" j3 c) v* t

( Q, ]/ I* u3 q% p; e; \$ hset honest-service 0
. f& P7 m2 N$ |) r
+ ]+ _3 P* Z! P' O, N% I: T" ?* q
set unhonest-service 0

* W$ b: {+ z8 Y8 \% Q, d% i4 n- j' p' H2 l; B
set oscillation 0
& G6 O1 j' {# {% P; T
3 L$ |" g( y6 T6 O( |! B0 ?- q7 O+ V
set rand-dynamic 0
' d- x/ s/ w) G4 v' L
end+ [) X& r4 p' U2 p

. Q* j: e" `( U7 i9 mto setup-turtles ; G  `8 f4 ~6 ~$ X# y- ~1 W! d0 ?
set shape "person". s* O6 _) d$ x$ I( W
setxy random-xcor random-ycor
/ L, }% I0 W  q" e* {$ ]8 Aset trade-record-one []
# Q/ U' ^2 u+ X

  ?  j8 o0 ?9 a0 P0 r* L1 qset trade-record-all n-values people [(list (? + 1) 0 0)] 0 {0 H3 a0 o5 [) u% E

9 L2 D7 z0 T4 ^7 U# iset trade-record-current []( W, o7 Y7 y) j# l% l. B* O: `" K
set credibility-receive []
3 v% y6 i, I8 x, `8 b9 n8 {set local-reputation 0.5  r; e. S" _, q6 p" t
set neighbor-total 0' C( R2 z( f3 M. X
set trade-times-total 0* U! f# r# f" g
set trade-money-total 0
4 W/ y7 C9 p2 B7 Y" r0 Zset customer nobody4 e3 E1 x* b: K9 q2 e" Z% Z
set credibility-all n-values people [creat-credibility]/ S; }1 i  X0 U8 E. S
set credibility n-values people [-1]( }+ |/ W3 y0 I2 ~& ~
get-color
. F" L4 v6 w! `+ ~

6 L+ l+ L! `0 oend" l2 v3 w8 m% P0 M! O0 x
* p1 |3 {) l/ @! O8 M! h
to-report creat-credibility
+ g0 K) d" X0 {9 ^# [2 x, Kreport n-values people [0.5]
* d/ C9 S+ O+ {) {8 U9 Zend' h3 }) R8 u9 y6 l  _) ?
* E1 l$ S4 N* ?% ~0 @, Q7 `% i
to setup-plots
: N7 x0 y' ^* W# j4 m0 Z) r6 X4 Q6 g. ?$ C+ z
set xmax 30
. Y' |. Z4 k$ m; F, z! u

! H  r# p' U5 j# E& W( Dset ymax 1.0
' W/ _& P$ S  H( ^& b
. c& {4 v# E4 P$ G
clear-all-plots
% U0 z9 w& O% _$ g# K/ Z5 ^: _8 J

) x) s! g; ?: e; Jsetup-plot1

) e' R' d) X, R8 F
( `; P: K+ ?/ ~2 M; K. vsetup-plot2
4 E; L- W# ^& ?: y
7 _6 v3 y1 T) t. x- c7 a
setup-plot3
5 I: ]7 o2 e6 |6 ~2 J
end
6 \1 O) {0 T6 I3 P1 g9 b+ K5 b5 _* ^9 d* P# e& j- h" X9 T
;;run time procedures' U0 X' V1 `( M! X* Y4 R
$ p6 C2 T7 {) W* S* @
to go
# f" B" o; \, g  P. u7 C" n' y: C
. \6 g1 `+ x& Eask turtles [do-business]
: v" }. _& T. L3 ]8 u5 s4 m
end
; H3 ?) k+ z8 Y' a2 G/ N# {' g
4 @! S( ?. ^1 G% x8 gto do-business ' S( t( q  H9 C$ Q* {9 {& b4 g+ n7 f

! h& o1 D- ?/ d* b" _& y3 a& l& ^  ?. Y& e5 j( y. I+ A0 ^
rt random 360
* D) a  T, F% t! U2 O
9 J- Y8 S7 T1 P
fd 1

+ M- x  {; w. g6 g9 D. T, H" O5 L( k: |4 ]
ifelse(other turtles-here != nobody)[

" i- C3 L$ u1 S7 d# D! h$ l  n& G0 x: W0 J; n) e
set customer one-of other turtles-here
" i: t5 H' n) o5 r. f/ M

' n/ e2 j, F8 \& {" L  N;; set [customer] of customer myself

9 ?4 N( Y" j+ P7 q
4 x# ]6 o: Y! P: m  cset [trade-record-one] of self item (([who] of customer) - 1)+ a1 x0 c$ h4 E( F7 R# ?
[trade-record-all]of self9 `7 J( V7 W- e6 w. n( t
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

' K; P2 L# ^/ N3 }3 }. I1 Z% A4 ~! B" D. a' E! t, I
set [trade-record-one] of customer item (([who] of self) - 1)
+ j1 e( k0 m. m: x/ P[trade-record-all]of customer
! k) C# A" @/ K4 U' M  `3 z; P

: ?( K# B# Q# D! uset [trade-record-one-len] of self length [trade-record-one] of self
) Q) x- k' D* Q; P1 A% _8 }, O

  F- g! c: H7 G8 pset trade-record-current( list (timer) (random money-upper-limit))

# D" {' d9 a1 A1 m, b
- t3 Q. i, H" x3 zask self [do-trust]
  p, O+ S! p3 \( S+ Y;;
先求ij的信任度# ~: o; C: w6 l. |8 |/ J

  E; O  P) L0 f* Z0 L1 ?if ([trust-ok] of self): B5 E) H1 }3 h
;;
根据ij的信任度来决定是否与j进行交易[! m+ U% F; f8 o2 Q
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself1 a, y4 m7 Z8 h' Z' x

5 i- j  b" H- Z. m+ Y[

7 D$ z; H1 Y4 r: h* l" ]2 E' V9 G( v, ^4 j  p* y
do-trade

0 }! c& Y; \$ y; ?" C( J$ t6 w' B3 i- ~4 D( H' N& d
update-credibility-ijl

- s  P4 \( g" F' t  j  P3 [% L3 C7 B+ Y( A
update-credibility-list. E, o9 \/ \* k8 b0 c/ K1 [
% C. P2 t+ N# q) h

2 d4 n, U, I. z& M; m& dupdate-global-reputation-list
& C7 y/ i7 ]3 q. s9 l! x

4 g2 W3 ^  y2 s- g- I5 n, \# Vpoll-class
: D9 u1 e) I+ u0 y1 [) K; `

  ]2 Y! }5 w1 g6 h) l  ^2 kget-color

) n! L2 P+ V1 i+ O+ R( E3 ?6 F# M- O" m2 H
]]$ }# n5 N5 n& n! y9 {+ u

( P9 T7 F9 d, Z& ^( _1 T9 n2 Y;;
如果所得的信任度满足条件,则进行交易0 Q5 s! L$ w, l
9 m& n; H: V3 c* a$ Y* A+ d
[
8 b& ~) X, w( n0 \8 J

: E) g3 F1 |0 S1 C& q/ P# |rt random 360
5 B: H) Z  `5 K7 |) ]" W: K
" c. k: A. a: w$ W* R/ D
fd 1
* [7 Y/ t/ W+ \. C8 g# T. i: P
/ s( Z; g" Z+ ~+ @3 D# i+ }2 B. a
]
# i4 Q" p9 N! A3 `" [5 |/ s

1 p* T& J* H) G5 iend
- }7 X! r. U' Q6 ]" t" k

9 g/ S, K% p# Z4 _to do-trust
7 t1 C4 x# N4 ^set trust-ok False
! P* b, ?  Z& Z; d" m5 r2 L
6 W4 b6 R% N; D# b
5 b1 h$ F) e0 s6 i7 M
let max-trade-times 0
( @5 T& x. d- i1 ?foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
6 d3 H1 J' x! M- n8 [, Klet max-trade-money 0
/ ^. Z: v0 c! u1 h) n3 L/ cforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
  ^- v4 F; c! C  e; w9 ?let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))2 D7 E# L; A$ f& A
6 [0 e! I" b9 y) j% o
$ k/ t! `) l% u8 r$ @: i# _
get-global-proportion7 ]" E4 L' T% ?/ o/ v/ f
let trust-value
- a* |* N* x* t4 E( `9 Hlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

  p( {# \" d2 b* D, B, _% aif(trust-value > trade-trust-value)
. C1 X- U4 F" Z0 m& b# x' K[set trust-ok true]( S4 R! ~2 e2 i- I" d8 N" T1 t1 {
end1 d$ h0 l# C- _# ?

( n6 j6 X4 a) t9 F0 vto get-global-proportion
/ d1 M& _, {* {/ o" u# Y" l1 ^ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
9 A5 `  n, k/ W3 c/ N' U0 L[set global-proportion 0]5 t& `- H% f+ j( e' M  o. K9 z$ a
[let i 0) [; L! t4 r3 k8 l, B0 G
let sum-money 0
8 _- O, j' G  Lwhile[ i < people]
* l" R5 r  m4 K+ M4 S0 M[
! X$ A; C% m7 j& Z' \3 T- }6 o  dif( length (item i
$ Z4 J. I, Z. k* G! r: o5 q[trade-record-all] of customer) > 3 )
( _# }2 A; W0 Y* x
[
# L" h" @+ d! ?9 ^, t$ Kset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
8 x* ^% ~2 l% f- \]
( t$ R; l; `7 Z8 ]/ C* P]
* \$ A  E+ T% |7 Q# b9 zlet j 0
" R8 m: q: ?' T$ }' H! Qlet note 0, K/ A7 N) {+ ^, X% S
while[ j < people]4 X2 Z: \, N( p! l, |; V7 r
[
6 ^) d$ A9 Q" q! Xif( length (item i5 K: E+ ]3 v4 g/ X% {
[trade-record-all] of customer) > 3 )

1 G, C3 w( }) m" {" z- Q[
- Q  V3 O7 N1 I& j; J* Difelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
# A1 ?2 z5 R. ~, P[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]# v: M$ L1 N# H# n' i2 J; z
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
& F* N' a7 k5 `# N7 O6 O]; L6 G7 N6 f. h4 W. K
]
, ?/ k* h* x2 b/ c7 Tset global-proportion note9 e% U% M6 P4 j" Q1 h9 R9 Z! o
]' i- m1 o6 R, V1 f( L, E+ d, J
end
* G3 |7 D2 X3 w0 a" F- j, T& k5 r$ t. l  ]
to do-trade, U/ v8 N/ I  v/ G
;;
这个过程实际上是给双方作出评价的过程0 m" v' u- q! @. n
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
/ @# a! J. ^' ~* V  B- u- {3 ], ^; qset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
% s2 M$ S) C4 K: Vset trade-record-current lput(timer) trade-record-current) U3 k0 M# D( F- N
;;
评价时间
  E/ m( i9 Y. \+ w+ xask myself [
7 ]8 h3 }$ z2 mupdate-local-reputation
+ J$ P" c5 D2 e& w) K! Rset trade-record-current lput([local-reputation] of myself) trade-record-current# g- [+ c: d! f' l
]9 I; p  k4 m" T9 a3 M& N: ]7 u: y
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself; ^/ p( a2 v  f( o8 a, o
;;
将此次交易的记录加入到trade-record-one
- N3 X' y$ e# p+ V# Z0 K7 ?/ oset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
( J- _; F. g. a6 F( Alet note (item 2 trade-record-current )0 V; N; g0 A. {4 T) X
set trade-record-current
1 j3 A2 [7 N- H7 G+ }" u7 U(replace-item 2 trade-record-current (item 3 trade-record-current))
$ ?1 `5 b# H! G( C" a
set trade-record-current
- O9 n1 R* \2 X2 X5 X# u$ k(replace-item 3 trade-record-current note)
' s6 {/ w* x: a' Z9 D
& J: L& L; k3 N- Q

: Y: l& B: C# V$ r5 n% a. U/ T3 `ask customer [
( r6 n% b" |! U, _+ R. ~, xupdate-local-reputation
( U+ n- m/ k7 b% |7 h9 Tset trade-record-current
2 I: |) ]0 L$ O) N) y" P(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
* \2 `. @; }' o' |
]7 i9 J+ y) M2 X0 h) V( Z, }

$ E5 |7 E/ L- b0 d
+ }! ^! a* ~) R5 Y' V" Y0 l. h" K
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer) Q9 c4 s, Z# m- e; q* G0 ?

5 |! R9 v, O* ?- W7 M& V/ F! U2 M4 Jset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))! v2 `' u+ O7 k/ v! c8 W1 c
;;
将此次交易的记录加入到customertrade-record-all7 a& [: w$ [! Q3 L
end7 a$ ^* }, @0 A  {  ^

9 m4 {, e9 e2 H0 c; h: D# G5 rto update-local-reputation3 _6 u$ g3 m$ a5 k8 @1 p8 i
set [trade-record-one-len] of myself length [trade-record-one] of myself
! U. G4 J. P8 O5 w' d9 ]' `% X$ a+ S( p% l1 V

: P. ^. f- ^0 z0 u;;if [trade-record-one-len] of myself > 3
  n" R1 y7 ^2 {- k1 `
update-neighbor-total" C! H5 A* I* G5 n/ k: `0 }
;;
更新邻居节点的数目,在此进行8 p6 Q2 j- F, _7 p0 }$ i% Q
let i 3
3 C% c2 ^( S# ^& n. R/ n$ }) `let sum-time 0
! K8 y6 A5 i8 b5 D# r# O, \while[i < [trade-record-one-len] of myself]' @" M6 D, }( H" E6 E5 L
[. R4 ~2 h) [( K* o. c
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )0 `& D7 O- _' q7 Q. d4 X/ Y  N
set i
, a& u% {9 Q- h, P- }/ P0 H- \( i + 1)

5 Q4 X2 Q3 S& ]/ h/ e% B; }]8 }. c; N# P5 ?
let j 3" ^7 T. d* r3 |+ \1 y7 J) `
let sum-money 0
) o: {: T+ x1 w$ h8 Awhile[j < [trade-record-one-len] of myself]
# i, ^7 C8 E2 K$ T0 |8 d% T[
$ o! _6 p3 v3 e& p( Gset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)/ e% e4 R0 f5 A6 T6 g7 z; x7 ?
set j6 I) R* c$ w% f& I9 q: }
( j + 1)

$ _; C: B# M2 a2 F4 _* x]
% z' |2 i" B( `) P' O% e" i' jlet k 33 L6 e4 e2 C$ f& b( m9 I- q
let power 04 i, }( g$ i8 N! \: b
let local 0
; X2 D: ~  }4 {, @  |while [k <[trade-record-one-len] of myself]: n1 K/ L% H) o# @# t4 A
[, k* j) F+ M1 B: B4 m
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) 1 k, M/ \, E$ `% S* ?0 @0 l
set k (k + 1)# a5 g9 G9 d, ?5 C" @& }+ u7 u. ^
]# Z. f% g: L5 x4 ^1 D  m" @
set [local-reputation] of myself (local)
" h8 U1 ~  O% V4 U2 P, {end3 V9 y/ v- f6 K% G5 Q( ?1 v
$ ^6 v3 {8 S  P: d+ w
to update-neighbor-total* v& a1 @. W1 @! s
  H. o8 z9 n9 o9 I) N1 i
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]- B( p, y# l, m% \6 f

) \, x8 Z* t+ a7 G& W* }; Z

1 Q: q- I8 K# J3 j/ @/ _# lend2 J/ Z9 ?9 e5 `  `6 `

- L+ ?6 |4 C( }8 d# J- y- oto update-credibility-ijl
1 F' f7 m$ i( j; Y/ d# B! @/ f4 m- L$ F: |/ J
;;
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。# i4 l- r! y& Q1 f
let l 0) C6 P; X6 }$ X: R
while[ l < people ]
- \1 r) o4 H+ x# N0 C( Q;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
) r0 U$ \# N$ c2 l9 f[0 ~2 z3 _0 ^  b3 D& D6 Z2 U
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)9 F- l6 |1 t. z3 [- D9 m5 c
if (trade-record-one-j-l-len > 3)7 a4 f8 `. [3 \$ g4 d
[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
: t7 [! `  w9 c: Hlet i 3' B& f% M# x+ f8 t( f2 R! M! b
let sum-time 0
& C8 n: P+ l9 C6 [% lwhile[i < trade-record-one-len]
+ `- _- L! |. m# |# q[1 ~7 a" d* r+ e9 _9 z* x
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )( A) [& x! q2 R; o6 E3 {
set i
: {6 t7 Q- M+ ~* d( i + 1)
2 a% D+ |. w# p% y: C: O0 C
]
- H% S1 K% ?* @) O6 L7 Jlet credibility-i-j-l 0. M, J1 s4 U) [# M
;;i
评价(jjl的评价)2 u* t$ N  {5 i9 I- d/ ^
let j 3
+ t3 B7 G/ d6 a# klet k 4! M. V6 \& W( z3 Y- L! e
while[j < trade-record-one-len]2 V% K9 u2 C3 n/ _( m
[
1 k5 t4 X: z& j0 P: qwhile [((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" Z  e- B4 u  O% H+ T- A! U5 c
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)
' a& s4 S7 G5 X. lset j
+ S" u" V1 j" r; P& j3 _2 w( j + 1)
7 W5 H8 r  z' K: M! d, K* r+ }
]9 N9 t$ C4 y3 v- K- R1 ~
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 ))
+ v1 e( K  r8 b& e  C. ^6 d8 b3 Z9 u8 ?6 F* i( I* H

- Q$ q- T+ X6 b  B) v( z5 P( ^let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
' v6 W, |3 W1 S/ X7 O;;
及时更新il的评价质量的评价  c8 T6 s5 q  [- ]/ Z  C
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
) N0 Q( J! ]) n9 }7 d- i: r; A7 yset l (l + 1)
9 P! D9 Y: ]9 s, r0 U/ ~]
  T$ @, j7 K+ L& P# K) [3 Jend) K8 T. h7 a! L* q8 c1 g' K: a

8 v6 [" ]1 n3 c  N2 F& Rto update-credibility-list
* r; j$ s/ \: ]' q" c7 G# Ulet i 07 k1 K4 Z, [) i: ^
while[i < people]
/ L/ \: n$ k# g) E, L" I( h+ F& d# s! g[
& B  Q& r2 C0 P3 D+ V% P+ klet j 0* ]0 k3 \  n1 ~
let note 07 t5 v- A$ `( K& Q% F7 d# L1 [
let k 0& s& d' n* ^$ M) E
;;
计作出过评价的邻居节点的数目
0 T( k! X! X* |7 b, iwhile[j < people]" A, O9 w* A0 C- X# V& j
[
6 E5 |) z4 H% H! L# Uif (item j( [credibility] of turtle (i + 1)) != -1): f9 \. \/ T' C0 ?
;;
判断是否给本turtle的评价质量做出过评价的节点
( G' m0 T* j$ Z7 O1 P$ m) x5 d8 g[set note (note + item j ([credibility]of turtle (i + 1)))
( x2 d) }  O0 X- K3 c/ D4 ?0 A;;*(exp (-(people - 2)))/(people - 2))]

% [. C& x+ I+ t( V! i8 X1 {3 ]  W+ Kset k (k + 1)
9 D% u1 b: {, c, C7 z]5 Z+ d! l* W" I" w' @
set j (j + 1)3 {; Y" h" Q8 z, [5 h8 u
]/ q% u" j, v) V" e
set note (note *(exp (- (1 / k)))/ k)
# I* N0 v  ^+ |  o: i0 v" [2 @set credibility-list (replace-item i credibility-list note)' B+ p8 \+ B; z5 I9 P# j& f
set i (i + 1)
. i/ Z9 C1 \# X4 ]]/ O: {$ l% h7 G, V
end
2 k: k. G8 a, O! e$ I
2 A7 F- X3 h( V& }to update-global-reputation-list" r# ^3 D. R' \% I' D! y3 I
let j 0! D+ M7 Y7 O! i! T5 Z& c3 L
while[j < people]3 @& O* D8 M) C6 B( P
[
9 P' M  e; L+ [# t, h! c7 ]! t/ slet new 0# o6 N- ^; R6 Q3 W
;;
暂存新的一个全局声誉
: j" |% a0 {$ _# klet i 0& H) S/ t$ M! g* r2 P6 j' J
let sum-money 0+ y4 x( c( `+ A% G# [3 L# r' g0 R( n
let credibility-money 0
' J! s9 X' Q* s' i; i* Jwhile [i < people]
' f) x0 \# j+ N6 x6 g3 W[! i  z6 A( q# ]" m$ x+ P& L
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))5 ?) Z0 J* I# v8 X2 o. t# V8 ?1 H
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& C1 _8 I( u5 f/ ?. \9 G  o, j3 zset i (i + 1)
/ }8 F7 x2 u0 u: M* i]
/ \' O# S) M/ q+ f+ j1 f- j9 ~let k 0' P( C# a! {" \" M3 a. J9 U) w4 e( q" o
let new1 0& B9 _' I' ^! k/ y4 K* U3 D! Q0 i. L
while [k < people]
0 K. @0 F' n# {5 m5 a[  W7 b: K( l2 r1 K' l! x
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)
" z) `7 {) o8 I& f! e& F- Bset k (k + 1)
& T9 f/ ]. o' o: v5 S8 i* E]
$ K/ C/ f" n! y5 Y* gset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 2 X& {: ^$ D4 R& M) u+ i* J6 T  d4 A
set global-reputation-list (replace-item j global-reputation-list new)
, w6 h3 j+ V, f  ?' T5 Vset j (j + 1)
+ d$ ~5 ^& n/ T" c5 w. e8 a/ r]
4 F+ v  f! E8 P2 m* ^end
1 V( [2 H6 o; O
/ o" I, ]- e: X: n  s
+ j# B' N, k# S, i) x8 I9 K: Q  g& ?) O
to get-color
! ?* a; |7 p+ ^. V$ z& C0 g
. L, a9 E8 F# u3 N5 v3 fset color blue
( Q8 o9 `$ G7 s/ `2 m9 ~
end
  A( O5 Q. ]6 t2 P7 R) C. J7 R3 {: f- h
to poll-class% [; ~+ U* E( Y, L
end) c1 g( o; F; t7 O$ H) U
( \' B+ h) d, j+ F& }* `
to setup-plot1" G$ J, c. P# C+ o2 [
- H! F( N+ H8 H( K
set-current-plot "Trends-of-Local-reputation"

' l* B" y1 i; y1 Z) F/ i  s1 ?" a1 K: l  a9 Y- ]! @* q! k# |8 @
set-plot-x-range 0 xmax
5 J% d8 Q% J& P7 \0 e8 H9 w% K
* t) r/ U0 A, }6 W2 B2 [; r/ U- ~/ c4 \
set-plot-y-range 0.0 ymax

0 ]$ Q' L8 l8 \4 l. n1 G' \- i# oend7 r; ~. p- I! L( _# E* @

; a9 m7 r% |, {  Jto setup-plot2
, Q$ Z  i% Y6 P
& r# F1 K9 o6 v) H- nset-current-plot "Trends-of-global-reputation"
& r$ t' C7 X3 }9 ?& e* W" F
4 Q/ F6 ?+ v/ J. q6 R) f1 A9 J
set-plot-x-range 0 xmax

6 _6 J' s9 U3 `( s" ?  p! a1 M* _3 G' j
set-plot-y-range 0.0 ymax

, F; `" ]3 Z& l% G1 \- R% \6 `# a6 U  dend# |% z5 g+ G# N& n
, U1 l6 h" B$ U  F
to setup-plot3
3 V5 _2 N9 [# p/ X  S. Z2 Y4 T: P; B
/ v3 T" G: u+ p, G' qset-current-plot "Trends-of-credibility"

+ `" A3 b  J+ R: p7 W0 v' _: N6 l2 r  k3 J6 X# e# U0 i  k' M
set-plot-x-range 0 xmax
- T1 B/ Y0 u; f0 Z
8 |0 ?) M/ f" d! v& r- c
set-plot-y-range 0.0 ymax

" T- X. J* F" tend0 M  F% p1 E9 c, N  E
; k% l5 `7 E; ]" G' w
to do-plots
; k% O3 w2 W/ v6 cset-current-plot "Trends-of-Local-reputation"& G' v) ]4 ~9 m
set-current-plot-pen "Honest service"+ {1 @* Q: h1 l% g
end2 E- g5 O8 J8 d* ?& ^# P
( l5 V# {5 y9 Y
[ 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.' P/ c- u; q4 N* d$ r) \% L
; x9 s4 H) V" G5 O1 L$ ^: V% W
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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