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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:
, D  e* P' N& j  @. ~- [6 ^" R% Bto do-business
7 {( u+ F/ W' D rt random 360
- c  }6 |% w  T/ c% I fd 1# H" G5 W; m/ A# k( l+ x  t
ifelse(other turtles-here != nobody)[
: z7 U% X, s- F6 P8 O+ y   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, V1 C* V$ a# ^2 y% I
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ; d$ b2 _8 m. Q5 @* Y2 i2 n. N
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
" Y& j: q9 q3 x   set [trade-record-one-len] of self length [trade-record-one] of self- ]+ X! {1 h9 F
   set trade-record-current( list (timer) (random money-upper-limit)): t/ M8 L' ]* {0 S5 A
. m; B* e; P' \
问题的提示如下:
. U  O5 h+ U# ?" B& f7 b$ \: V& D$ F9 \6 x$ |3 K
error while turtle 50 running OF in procedure DO-BUSINESS
2 t+ Y0 j$ p7 x+ n1 ^5 O  Y  called by procedure GO, ?% Z$ l1 |. x. H
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
7 v$ _" z1 U7 @% C. \
(halted running of go)
1 `8 F1 e/ V0 f% ^! u5 r5 @
2 \1 b: C9 t) D  N- a" Z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~~0 t/ C' u# d9 b  }
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/ L( U  ^) ~& `3 K. z0 ?! G- [9 N
globals[
$ d. T6 B" y" \xmax: P" d4 {( }+ a% J/ g% U
ymax
, E" m, V& L1 M* H" Gglobal-reputation-list3 B1 `5 X: l  x% @% B
# y4 k9 M# j8 t+ E& c3 G4 ?4 S
;;
每一个turtle的全局声誉都存在此LIST
1 Z0 E# u1 D7 d# w! V& F$ \credibility-list
9 P  \" c. O4 d5 ?2 v7 U) |' O;;
每一个turtle的评价可信度
, ~* X3 f! j+ a$ L, Zhonest-service
' t1 X; n2 T6 ^: ~+ Kunhonest-service
2 U9 R, y/ @7 Y) foscillation
0 i, F7 H* C1 u. r0 I" A4 Xrand-dynamic9 ?, N9 X; S  K/ p9 m# \" y  r
]  k5 ?" N: a8 ]2 |

3 e9 C4 a) L' o. @- X3 |7 Gturtles-own[2 Z4 @" Z' s0 V& I: i+ }
trade-record-all5 M9 y' N4 C3 m; ~
;;a list of lists,
trade-record-one组成
" J* L; g+ R: Ftrade-record-one
5 h: i4 E8 N' W! 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2 ?; K$ S  ]8 l2 [4 Q8 j

/ n$ I* u6 R% F$ l  k$ d0 a;;[
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]]
( P4 q- M  e5 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]3 _6 E" p+ l* v# ~4 l% n
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
  Z! Q7 W, z: wneighbor-total
" [: k$ V9 |8 F# o5 F* X4 X;;
记录该turtle的邻居节点的数目
) `* J" C; c7 x# _4 strade-time
8 p5 Q2 E0 B4 M3 q9 P;;
当前发生交易的turtle的交易时间5 p% U" z" N+ m/ Z3 q- I/ d
appraise-give
6 H/ V% N6 @- Y* ^5 E2 I: u  P4 I;;
当前发生交易时给出的评价! E  S0 }# A. R0 e! \
appraise-receive
1 R3 T7 W( e  N;;
当前发生交易时收到的评价) h. T$ g! e' k. G% G
appraise-time
$ `% o$ e1 J: j0 K+ @3 L;;
当前发生交易时的评价时间! p! E5 o3 z" z! @$ y+ }& N/ J3 e
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
: ]: q4 e, q0 X( C1 m! C' r7 Utrade-times-total  c& i5 ~2 b, o. n: R0 V  O
;;
与当前turtle的交易总次数9 Y$ H6 d" Y: R/ k: C
trade-money-total3 G) V( J9 Q5 j6 B* @+ e
;;
与当前turtle的交易总金额
8 I7 S6 L3 H" W: g) ^+ D: k8 elocal-reputation% k- m: V5 H3 G/ j( D
global-reputation
" R0 F( b! F" R: m) d5 P( ecredibility
; W3 K2 c6 s5 d! s;;
评价可信度,每次交易后都需要更新
! u7 [- u- _3 V5 f) b% |! pcredibility-all( M" T* I" E, W" i! f$ ^; @4 b
;;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# j  `  J" r4 t* L3 u
5 @8 d5 W2 ^6 v- Y, x* X- x
;;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: e6 V- f1 [1 r! Y- {+ B- m6 n
credibility-one) T/ g- t/ J9 m7 S; P
;;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' K& }) Z1 a3 |1 g1 q' R- v) |7 o3 p
global-proportion: j4 o) u% b2 K6 ]* J+ [7 N
customer  [/ y8 M% R  P* P
customer-no
3 {: _. @) ]0 I: g$ S# U4 H( J$ |trust-ok
& V8 g- f( r! [trade-record-one-len;;trade-record-one的长度
& e8 I8 r; m5 d) ]0 ~: r) l]2 F$ e7 A0 ^% C) y

1 z$ ^( I! z3 U# q;;setup procedure
0 a0 x3 x. E# b$ X
# k( q: O9 g$ p0 ]# W9 @/ nto setup* H* _. {) t, U5 u6 `
% Z. d5 X. R4 k) ]+ S
ca

+ e$ a, o: U' [) R( o0 f- Q
0 o4 _: @: O9 S5 R7 _initialize-settings

, r5 Z+ q# r4 Z2 h# c. M% M( h$ s$ E6 Z" i5 f
crt people [setup-turtles]
0 n  x' |" C7 ?5 H& g( k9 H
/ E) x- }$ W2 I5 @: V
reset-timer
1 N; x$ k; Z  A  n+ a3 ^

2 N! r6 {5 A3 T: Jpoll-class

, L/ I3 r6 x: S4 k; _& A) V& G7 V7 N2 l3 c  @
setup-plots

4 E' H* p3 w! @$ ^- o) ?
: v+ T/ c! Y+ S% Q& k1 h+ bdo-plots

: ~! ~* S" C& h! }end
% G2 n! x6 \) `* j
, b' Q1 O4 n3 p7 N* L) q% wto initialize-settings9 C7 h7 l1 {& @5 k

9 S: J2 x  x# ]1 J/ oset global-reputation-list []
& t9 y4 d. u) @3 c2 V
6 K5 f; V& d: \" ~  A7 [4 \
set credibility-list n-values people [0.5]

( k% w% C/ K4 B; j3 F
3 i# ?* W) o) [% Fset honest-service 0

$ E; |8 I! P* I0 J- x% d8 y) g. H3 q: r! k8 y; E& \' f
set unhonest-service 0
4 \1 G9 J9 y5 M9 q2 T
$ M& T9 V1 w) j$ D, a
set oscillation 0
6 e2 a% T  P; B3 r1 u- p

3 u" C2 v8 B6 [" _$ {set rand-dynamic 0

0 M) y/ Z" _: @, l/ Dend
) o  Q! R% U  W/ J6 J
$ s% P; w' j2 H6 }3 g+ G- Ito setup-turtles ! w4 T/ K. F+ T( F9 A, }
set shape "person"
( {  p% t/ Y% h+ ]. g( P( L# ~; Fsetxy random-xcor random-ycor
0 O2 R; d) B$ }7 P, gset trade-record-one []
& l/ X$ f! H5 {6 Q' T+ R, I
8 x6 ?4 w6 [; Z1 S3 q; o6 c3 M
set trade-record-all n-values people [(list (? + 1) 0 0)] 7 L8 c3 W( J, C

, W  r5 }5 |( u& ]" kset trade-record-current []% Z6 P) O0 @' ]  L1 G2 k
set credibility-receive []$ f) q$ f. j/ |4 I4 k* M2 m6 c
set local-reputation 0.5
$ |' ~4 G) [- ^set neighbor-total 0* {+ \7 ?3 R% c4 p7 q0 a, B; m
set trade-times-total 0# `- `0 _, ^. S- w, s
set trade-money-total 0& F' s6 p7 a! u- S, I3 C# s: d' P$ v9 p
set customer nobody
* X% J4 K# C6 Z% s/ G, T4 Fset credibility-all n-values people [creat-credibility]9 Y, ~0 Y9 Y9 ~+ G8 c
set credibility n-values people [-1]! Z7 m* C- y1 |
get-color4 e6 T; [: b, k' s
' ~1 z' B  i' Z
end4 c8 Y6 X0 P8 _, q3 M
* j9 j( G7 m7 ^8 {" H2 R5 F
to-report creat-credibility
" L: X, N. Q0 W$ wreport n-values people [0.5]+ m9 A# D8 `0 x% h; u8 }
end
* j+ Z, i9 Z+ H2 z- w) e( F- A  S2 \  f1 c; c5 t  _
to setup-plots
, ~8 n+ M% y' z1 @4 ~& Z' W' x& c& ~5 @! F) _
set xmax 30
+ [2 C: ~2 E5 K; I
, O2 ]3 N0 D( z9 O! l& A- T( [
set ymax 1.0
9 `9 D( K3 g3 P1 h( s0 ^$ P

' T/ p. d/ T$ k- J  r& e4 V/ Pclear-all-plots

/ i' R% H( t% X* w
1 h( [  i: W& W* q9 `3 Isetup-plot1
  l. f5 p2 [* X
! D8 _. N0 t2 a
setup-plot2

- B2 u# }5 a, v% H9 \! P0 L
4 k0 z3 p1 L* |4 Bsetup-plot3
* D6 u. m: n. g0 l" t$ O( t
end* N) D6 }9 e0 ~2 C; o

) G6 s/ C. Q% F: h# u;;run time procedures
) R! ~' m5 u: Y( d: m. t8 j" E' C# {, G3 \9 [
to go
! ^: W! w: }+ N& t* _: |5 a* Z
, _, C6 \9 B: F/ m5 g1 qask turtles [do-business]
! z  k& t9 v1 u3 U
end
" h& C6 X( L% f5 x! [  E: E1 ]% {. F! Y
to do-business 9 U+ Q; f5 Y8 ?# ?% z
. ~9 f) X* W$ m5 v: w5 B

# \4 N% `- d, r$ F2 l  m8 Zrt random 360

. W' k! O5 Y' b5 s. Z2 q4 Z/ T6 v9 T; V7 i2 _
fd 1

1 J$ ?/ b% V+ U8 E3 i2 O1 u
) [7 Q: X9 |2 C" l5 Hifelse(other turtles-here != nobody)[

. U1 @4 u: E# ]1 h8 A1 F
4 G1 H$ A- s3 ?/ y% fset customer one-of other turtles-here

1 b6 ^3 w% L  K& |
  R  R( m& x0 \, }' ^;; set [customer] of customer myself
" s" ?& M+ p: D; U+ f

4 q3 f4 c9 }  a7 M2 `set [trade-record-one] of self item (([who] of customer) - 1)
! {# i" `! k& s! l, L9 j[trade-record-all]of self
$ e2 _4 h- n( z( J: b" r;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
7 t9 T% m& S9 P9 R8 t, W/ W. N/ v
' d) n$ M3 D8 q
set [trade-record-one] of customer item (([who] of self) - 1)
+ L) _8 @: f3 N* @$ q6 j. }  I: j- y1 ][trade-record-all]of customer

4 M0 F% F4 l5 \: T% [6 S* s' l! n8 H* W) U6 _2 x9 s2 p1 ]
set [trade-record-one-len] of self length [trade-record-one] of self
& ?3 R4 b' G5 y, g; A" n

. K6 r' Q: }. ]: Cset trade-record-current( list (timer) (random money-upper-limit))

7 J7 q6 n$ ]5 Y8 y6 \- ^" x5 E1 Y! ]" R. ]
ask self [do-trust]
  H, V" T' U! ?: w! o9 U3 Z;;
先求ij的信任度& B# w0 @$ R, O0 `* U

" V4 l- A6 [/ K4 h5 lif ([trust-ok] of self)) L( Z4 v+ ~, [, K, c3 {
;;
根据ij的信任度来决定是否与j进行交易[7 j/ S0 _9 s' O# ?6 w1 y" m2 O
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself! R4 l. w( {4 o  `+ Q6 Y

2 L2 D- B. N6 D0 i0 U6 O& S[
0 O( F! z3 F" p+ s: b7 I
$ m5 T0 f9 {6 L1 H( v
do-trade

; A2 [/ @* [$ x& S$ {7 \! m
2 ~: E, t) U$ ?; f$ p" C- n9 n$ jupdate-credibility-ijl
+ ~& _, n1 Q9 A& n

) P# ?5 ]$ t1 b: B- r5 wupdate-credibility-list
3 A: g; C* n1 W  H8 K2 K& M9 W4 T0 b

9 Z( g& X. F: k; |6 `2 O, U8 u- V1 a
update-global-reputation-list

/ J  I; t) ]$ i3 Y3 s( O4 P7 y( e6 p, F- d( _' m! I' s
poll-class

4 C- F, F- f/ p, }" z% V4 i  ~$ d5 ]! `: d+ ?7 f) X
get-color
) |2 M( ~" U2 A  e8 v: x

7 D! X3 {! @0 l* O; q" Q]]
& u% L2 r4 t$ R* g) B+ l# j
! s  ?% m% V, p/ a% u! N4 v;;
如果所得的信任度满足条件,则进行交易- u3 H0 b) [" D. v- `! W* V

1 ]1 W+ A1 Q) n3 d+ k[

* A, J  [6 @1 r3 ^0 P* r
- ]* e. m! c; f$ crt random 360

4 i" Z8 ]% G# a9 n' \2 D! l8 n" r% {2 }& Y; s
fd 1
; T, D5 J  N, M
8 [; a2 V0 e' y4 h+ v& y0 I
]
  z2 k7 l# s2 n9 Z

' V, [' i5 d2 ?/ v4 p  B3 t. \end

. r& e% a: h. \9 S. G. R9 A
* V& L. N0 U& y# s4 |to do-trust
" m* _, f* ~6 W' Y) r1 Fset trust-ok False* S3 I9 ^& n) t+ I0 g* N! ]
' ?) Z. G: D: |5 F! o5 q4 H2 M
: _8 ^7 _7 v8 B5 g
let max-trade-times 0
3 |3 h1 h: k1 B7 E2 W) S. jforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
4 b8 O8 V# `8 z3 l# H, A4 n7 V* |let max-trade-money 0
0 o5 E) j, p, o. e* Pforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]) _* Y1 [2 J9 b: E: h
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))6 V0 j; q* R( e
9 ~6 w8 n1 y  Q( v! g: D

' b4 C) P8 C& a7 Q7 `- Lget-global-proportion2 ^; e* Q+ d' P6 a- F0 I- _
let trust-value
0 N0 h+ ]( m+ F5 Y4 olocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

% q  v/ W4 t( fif(trust-value > trade-trust-value). f& e/ {: G; b4 y
[set trust-ok true]1 h7 k8 G! X3 W" I# X9 u4 m
end' b- Q9 R5 y9 c, k& ]9 p! h2 ]/ B

/ |$ S8 |1 p. J8 Z, I4 U$ Qto get-global-proportion* p8 ~' G* N1 n# H) A
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
4 |( O/ N' q; L[set global-proportion 0]6 U9 o& b  Y2 C% c. c
[let i 0
8 W4 i8 V# a  V* N' Plet sum-money 0
5 f# K9 h2 E! a) owhile[ i < people]% N! K; Q: v6 v& A. _# k! H' Y/ j! m/ w
[7 ?$ k+ O% O( m; D! k
if( length (item i, a1 s9 Z; S2 e9 n5 a
[trade-record-all] of customer) > 3 )

, z" U( n& x. C3 g8 r3 \, _[6 M3 f  j( L  i5 h
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))* `- t7 F  z+ C5 e  K  w6 c
]4 h" L( }' X5 N' [) S
]  l( ~( O. |9 m+ v7 v
let j 0
, Y- w% j7 L6 f9 Q/ p+ o: C  `let note 0
6 g3 N: d1 e4 }, J) m4 Fwhile[ j < people]" p' V0 z6 P: f# x6 N. l# l1 t
[) @% \  k' p" ^9 K
if( length (item i* N' M; J! o, `& N! `
[trade-record-all] of customer) > 3 )
" F. M" L5 t- M* M
[
9 _9 S( s) |5 T# G7 i4 o* `& l) Xifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)/ A( n/ T& W5 S7 A3 H5 @% T/ f/ l
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
, ^: ?: q- S, M7 y8 L  K! h4 O4 F[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]: E) P. E. u) \( C" O
]" H$ g& o# ]# h. Y' M& q
]7 `' ]' q3 j0 c2 d: O6 Y( t
set global-proportion note" l% H0 G1 i6 a8 F5 a8 K- a- |
]8 N( o% {6 p9 D( @
end" a/ s( y; a& I. c9 ]8 a% m
  Y5 A, Y( |: w; X! ]( D9 p
to do-trade0 N( R$ Y: Q/ I
;;
这个过程实际上是给双方作出评价的过程4 V' a1 s! B% B  v  ~0 {
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
: l. p; q5 F* X/ q7 l4 yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
, t/ ~. F( a$ r* O6 q. c5 tset trade-record-current lput(timer) trade-record-current. f% Q. R7 }: T2 l3 J
;;
评价时间2 i3 @3 s: G: A1 N
ask myself [. o& X9 m3 J4 F: g; \9 ?! k
update-local-reputation
: J" {) J0 d! j. G: eset trade-record-current lput([local-reputation] of myself) trade-record-current% {' g' R- X% p  o
]
8 c5 a* q" X* F# P) f  ]7 Z) A" Aset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself6 c/ W/ R4 z& f" s1 ]3 Y0 N' T
;;
将此次交易的记录加入到trade-record-one
( P2 M1 X- I6 F. `* qset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
& E7 S: y# t7 g' y; [- l; Q0 B; P, |( ^let note (item 2 trade-record-current )
# o9 G; o2 k1 i) x# V( O9 Kset trade-record-current1 v. v+ k& `: \$ d5 A
(replace-item 2 trade-record-current (item 3 trade-record-current))

2 x/ S; C4 i7 K* lset trade-record-current& f: S) b9 y1 ~( x- ?
(replace-item 3 trade-record-current note)
* C1 @/ O8 `& k# l, w" M  u4 a
" P! ?! `9 W# _9 ^( ]$ Y+ H

6 n/ a( O+ W! M( P0 M, Rask customer [
$ r+ {; r$ E4 F5 T8 H! [4 iupdate-local-reputation
9 Q) M( q, [( J) D( Gset trade-record-current  h& K; I  b9 ?
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
) y2 V4 I8 g3 R+ F/ B! |
]
2 W: ]: j! \2 n8 ~" ^( q6 N
" ?0 o$ A  Z6 v" S9 s
  C+ U2 E' _' y- M
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer3 S+ {- C+ F: d) E" C0 h
) }0 {) i  y0 x: q" D4 {
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
* ~) d& L6 V# _0 d( e;;
将此次交易的记录加入到customertrade-record-all' Y: u& A& }7 F
end
* N5 Q$ s( A4 {9 v2 W" h& I) c5 u
to update-local-reputation
, |$ ^& j3 F$ d" xset [trade-record-one-len] of myself length [trade-record-one] of myself
! J/ e1 v% I" E1 c1 W1 ~4 j
5 e. g- G2 |  U0 L1 m6 S/ @: @* N9 C4 y4 j, O& w# t2 y: q
;;if [trade-record-one-len] of myself > 3
# w: w( |& B- d
update-neighbor-total& p( q$ c) R" x- r. ]: x8 e
;;
更新邻居节点的数目,在此进行9 y' K* g9 X) S- A. f0 {1 s6 ~/ a
let i 3
$ k4 T4 H4 X) i9 Mlet sum-time 0# l; j! V" B# I1 N$ A% M, p
while[i < [trade-record-one-len] of myself]
, t9 V0 d6 h' R0 p2 D[
) T$ r8 P2 q- vset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
5 l) F6 T7 v5 A. y  K  c: Uset i
( ~$ u+ V8 R, E" S5 q( i + 1)

2 q* f. ?/ v% A  h, Y3 }8 n]
6 U% ~0 I- ^, \. |5 ?. x$ Xlet j 3
0 I8 K7 F9 f# S% P: Plet sum-money 0
- a; n$ E3 `7 xwhile[j < [trade-record-one-len] of myself]
, a+ N9 Y, q8 E/ H[( I. V  x% Y. @- `* ]+ 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)3 ?/ z( `! p% o0 ^$ ]* |6 J
set j
  F0 M& G% s2 i' ^( j + 1)
+ l* s% I! X' I" w
]6 @! m9 H' U0 _1 T# P$ u( L
let k 3
4 K, u) v/ I2 N' x% M# `5 Tlet power 0
; G# l& j9 z. Ulet local 02 `: ^% l7 i$ Z3 `: L
while [k <[trade-record-one-len] of myself]
" R3 t( o4 h- e# K[/ s1 J3 C0 g. u5 R0 C% |2 A% _3 N
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) ' P. G2 l7 }3 h  V
set k (k + 1)
3 h2 Z4 g' O9 q) e) K]. R4 i5 q+ C4 C! H0 w
set [local-reputation] of myself (local)' {2 ?  j: u9 s  j8 n8 M) X3 R
end0 v1 P, l( P6 _
) a. k  v! d5 Z) q* W' E2 v
to update-neighbor-total
" `$ w5 o5 L5 f& B; I' ^: I3 ^' q8 `4 k: T+ r% d
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]" A, j9 b: {8 A7 W2 J! v5 k
& D* g* t5 I: ?; I9 i2 ~

2 o7 s1 N- a9 S$ w$ Kend# r, f* O& G; |  ^1 X
5 n2 e5 {" c+ O( g
to update-credibility-ijl
7 F* V5 ]- m" Z& F# a
0 b* S$ ]3 e. M) h4 r2 _;;
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。
6 B' I, K9 K; i, G& \let l 0
) ^0 r% `' ?7 M' Kwhile[ l < people ]
1 W7 T+ h# Q7 c. f' g* q. D. O;;
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
" o  H3 _. H) |' J, W4 m[
+ `1 O5 D9 f; {( ]3 Zlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
1 p  y( @$ |/ uif (trade-record-one-j-l-len > 3); [; T- C) W. p: r$ I" e9 L* a- q
[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- h, a6 j. m7 `& I! q
let i 3
' E- U8 S. V0 @/ d! zlet sum-time 0
' d: A& a+ v: i0 O$ Gwhile[i < trade-record-one-len]7 X# i2 s* s# `, n
[7 ?! |6 Z5 K8 k- G: @
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ). o6 @% I2 g* x; ^
set i
1 O% J( r; a2 A5 E# O( i + 1)
1 F# r; e0 H# h$ i8 E7 [' c* W# i
]
' e5 |5 y8 p: V/ g: [6 R, xlet credibility-i-j-l 0
8 `7 ?% l6 S% p;;i
评价(jjl的评价)
2 G( m5 `6 v3 l9 {let j 3
/ d6 o* @# R# Wlet k 4
! D  j2 d$ Z( a  B6 Q7 }while[j < trade-record-one-len]
" [4 W( ]1 l; h; j; H  z[
" B3 }6 N$ J/ T/ n7 V2 Uwhile [((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
6 T6 b3 J7 P% V' |1 Tset 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)/ `) W) |5 K$ w1 |5 `& d
set j/ M8 _- r# V) I- f! e
( j + 1)

! _8 U; s- v# k( R* ^], q& p: v; L: I* T8 }
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 ))
/ m2 X  O4 K1 r7 C/ S, E/ [2 I' a+ z2 P9 }
& U9 L  e0 @+ j5 U& X$ p
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
' ^  A4 _) l  x% s- L( J9 N;;
及时更新il的评价质量的评价
1 b" q( Q! @1 K3 b% J' _, Cset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
2 O! Z! l7 j8 Z" k3 B2 ?set l (l + 1)  [8 q7 O) a7 V! G: g1 A2 t# \
]0 x* F' }  o; [) {$ `  M  z
end" i6 I% t5 s7 s. r

2 G1 Q  G3 @  C5 c/ k7 Lto update-credibility-list
* o5 Q# @* u! Y) n# _5 L% |+ xlet i 0
' A! Y8 e3 y0 o( Q( Twhile[i < people]
, b% ?7 A4 ^. g5 o$ T2 p& C# J[  C0 V' u+ H. R' a  A  q0 b
let j 03 u6 x4 |: U3 B% I! ?& f: M& u& D
let note 0
; `3 L: G" ~1 H1 g7 o$ k  V# tlet k 0% S& g$ K4 F4 l. j6 m4 K
;;
计作出过评价的邻居节点的数目
( a0 A3 P3 J) Q! h( Dwhile[j < people]$ _3 S, c8 ~3 x" x5 R& R
[' ~' K% f. E6 n$ `( O
if (item j( [credibility] of turtle (i + 1)) != -1)% A" a+ J0 B9 r2 e! b
;;
判断是否给本turtle的评价质量做出过评价的节点
& ?, Y! L0 e' F[set note (note + item j ([credibility]of turtle (i + 1)))! \4 R9 C: b2 o% k( S
;;*(exp (-(people - 2)))/(people - 2))]

4 D3 ~, W- o% [9 vset k (k + 1)7 t' X, A4 M% z" s
]1 o! Q6 T: ~3 z+ |0 ^
set j (j + 1), Z% W& R3 Y. H3 C# O9 E
]2 s- Q. C& K; p$ d% n
set note (note *(exp (- (1 / k)))/ k)
* J  A  S  T+ M6 ?; mset credibility-list (replace-item i credibility-list note)
5 \9 y2 q; M9 ^! D# x( q: Zset i (i + 1)2 L9 k. }# z& V& Q9 Z6 h
]
( U7 ]2 S8 ?$ T0 L+ y1 ~end# n, s2 M2 T! u! x; ^
- j4 y; Y% ~7 V9 u* Z" [# y6 \
to update-global-reputation-list
. d. R4 p8 s, d3 k& M, y2 Qlet j 07 B+ v1 d+ l$ O; p* A& k& M
while[j < people]; R! g9 j! _. W' p
[
# ]4 T# S0 M+ k) X4 @7 o( e7 |let new 0* Q& H3 {* Q  s" x+ r
;;
暂存新的一个全局声誉: g& n# ^& o- H8 M
let i 0) y: D% A5 r& Y  F
let sum-money 0
  t6 T0 `/ y, [/ R# D! n! g7 o$ e+ Zlet credibility-money 01 c3 z$ w( @+ A6 [7 L* `
while [i < people]
& P8 L6 h/ u9 Y. J/ P[3 p" Z; _* }$ o$ t6 `, w5 T, P5 O
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))9 Q9 X! g! a0 {9 @8 ~; B1 T
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))9 H  f7 H' c6 ]" Y
set i (i + 1)
7 v% p6 P! q6 t" h8 u2 n]. k5 U: x& v; v" }+ k8 q+ |
let k 0
, Z5 H! E* d* E6 T/ x' Slet new1 0
) w2 [( P8 c$ c: @while [k < people]
4 q& H& {6 C8 P[6 y; v/ u" }* T0 F5 @
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)
1 e$ c# @9 |7 a9 I* I$ N1 F6 Bset k (k + 1)% q( D* w& R' p6 ]
]2 @  R: i6 A# ]0 c. u6 O1 l
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) # r4 @1 M  X6 A( T/ q
set global-reputation-list (replace-item j global-reputation-list new)" Z* t% z% H  S, q9 D% X4 J$ k1 k+ k
set j (j + 1)& |3 e. O4 [: s" i$ k/ C, B$ H4 _
]
) m, J& t5 k* Q- E3 ]  X# {end6 \: P. j. X" F2 a6 o
) Z* E/ D( f3 U: z! Z: p
/ P4 W3 I7 z! g' @) f4 y. m

( [+ D, i+ T" s4 i9 ^to get-color
* h9 a( P( X4 R; u# }: v: o% c
, W" M: A# B6 f2 I+ X, E( Xset color blue

/ z8 r5 X  D8 B4 q, z# I- jend/ |7 ~8 P- j" p# D! |8 _3 a

9 w9 P, t% y9 n$ V* P9 ]+ Ito poll-class
; J( Z- n( G, `$ a; @1 jend
' h1 F0 K" g# _! I* c- T$ z1 O" F# C5 D6 y* x6 K
to setup-plot1
- P: b1 R+ c% G: g* S: Z* k& J" Y
set-current-plot "Trends-of-Local-reputation"

' N% C7 I2 P' s; s% Z
( f6 J+ }% @* Xset-plot-x-range 0 xmax

4 s: @1 V; h  n0 D, k  N0 r2 B+ k( ~& Y
set-plot-y-range 0.0 ymax

% I; C1 V5 M, M# I1 x' eend
, D1 W+ H' q2 W9 [' R& v6 |8 H7 _* b1 R
to setup-plot2
; b" L* ^1 j" o9 ^  R4 Q. ?0 [& \2 v; A0 _* k
set-current-plot "Trends-of-global-reputation"

7 C: N$ s! Z: s
" ^' ~; O: z7 S2 u. `- Oset-plot-x-range 0 xmax
; m, r5 l) r0 `* H0 L. ?5 p9 c6 y

1 }& \' c" C; Aset-plot-y-range 0.0 ymax

2 K, X4 O6 k8 `" A) {- qend! e7 h" }# Y* Z- o0 L

7 W4 c9 S- X* U) ]4 `: F5 eto setup-plot39 ~; ~5 C% l" x6 g4 d' ]% W
4 l" ~, D5 R2 ?
set-current-plot "Trends-of-credibility"
( C% J5 E- b; E' V- ~

0 J  ]5 P3 L" N% _$ }$ Rset-plot-x-range 0 xmax
4 f3 C7 u! J0 p

8 B$ y" M& y& E1 T- u' Q7 v: iset-plot-y-range 0.0 ymax

4 U9 b  o. X2 H# j. ]+ [end0 p: z  t" W& _2 ]+ S. R7 o
; {, \( Y8 a+ z3 }7 F
to do-plots
- n2 f& a: @" H+ d+ J4 N, S1 Jset-current-plot "Trends-of-Local-reputation"2 k0 D" p! l  ]* z
set-current-plot-pen "Honest service"
1 \- f) [, M5 ?# d0 v9 Y" \end$ V. {' n' b7 l6 H! D7 i

: D& J8 e; D  s! v- c( u[ 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.
) i  R. j0 H) G8 F/ S$ h, a! n- t+ m" c& ]4 l% g
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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