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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:( a$ I7 l. y0 |% l& D* v5 l$ ~
to do-business + }  v* E- S$ r" O
rt random 360# I0 j8 ?. c; f# B6 u! s3 b
fd 1# Z6 i% @& Q. K6 S; J
ifelse(other turtles-here != nobody)[1 U& R& c3 T/ d* }  o6 U5 M
   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.
: B% L- g, K' J$ Y4 @# Y   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    , }! N7 K) A! y+ S# A
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer( B5 M9 \( G; f9 c. _& I4 u; d/ F
   set [trade-record-one-len] of self length [trade-record-one] of self0 y' Z+ t- c8 U/ ?4 G4 y8 [
   set trade-record-current( list (timer) (random money-upper-limit))6 {) W3 B3 G0 l2 }  F' p# y1 p( l
: t5 ~9 S! H3 K1 L4 l: U: j, F$ Y+ S
问题的提示如下:) Q6 y! p  v- h

  `2 i& o8 J; o6 q) v" `error while turtle 50 running OF in procedure DO-BUSINESS
. \/ i* @* }7 R) k9 q  called by procedure GO" a+ I7 h# j% A9 [" k. v, B
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
& Y! W0 m- l( s' A8 r0 D
(halted running of go)
' v% p4 x- a- D9 L3 b# g! G! Q1 \# d( E2 l/ w2 r
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
( ]" [% c8 l$ _0 Y$ H' t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
; O0 O: z+ L/ l8 R, W3 H! @8 ^globals[6 l" e% g3 t1 U! g9 V
xmax
0 R( x: i: r  ]: a* G+ I) r4 _& nymax
) {5 }& G/ d; u- U- I8 ^1 X+ k0 e7 aglobal-reputation-list
& Z3 S& R9 ]! O' X( n' Z7 s) f1 f3 a9 [+ i6 |. P; o4 G5 p% r" ]4 W
;;
每一个turtle的全局声誉都存在此LIST
  U: h1 l3 k, X. ?/ Kcredibility-list
+ K1 a0 ~3 A7 |4 T;;
每一个turtle的评价可信度
+ t5 Q, [+ X* [, Z8 `& {honest-service* u) m( H. a: y! t8 U* [) |$ U
unhonest-service% Y& M- P4 s# d9 c& y
oscillation
2 t4 I/ P# c* jrand-dynamic( Y7 _  s' {2 f& A1 B: N
]* N+ ?; X6 W- y. m8 j0 m

/ ~+ I% N, i6 W2 gturtles-own[1 j3 {, h: @' I+ J
trade-record-all  ~. a2 S9 I+ S* A1 C
;;a list of lists,
trade-record-one组成  R$ Q! ^4 i$ r3 L* M+ L2 B- y
trade-record-one
  F9 O( a' n4 t  M. ~  I;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
- W, Q" N2 S5 F$ M7 w+ @& N. h$ p% |
;;[
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]]
6 Q% K" b, K4 E0 S* R& q- strade-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 P9 L2 T; i8 \8 B( }$ F
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
. B8 L, U1 a! i! {: s# bneighbor-total' p7 a9 ?$ t) |+ m9 q! l2 T$ L
;;
记录该turtle的邻居节点的数目
# M* j4 A* o5 Z$ d! u! R8 @: Ntrade-time
; d- f( W, K: n) T;;
当前发生交易的turtle的交易时间
: y3 C5 n6 R/ _" ?8 L% a. S4 `appraise-give
4 r( W: P( M' @) Q4 y+ B;;
当前发生交易时给出的评价5 \/ M# Z, a! J) o. f( A
appraise-receive1 J$ h0 U0 F8 U$ u
;;
当前发生交易时收到的评价
$ ?4 i9 N$ g% B& I- ~appraise-time
0 N( @: {+ n4 g% R;;
当前发生交易时的评价时间
! R, U: B4 @4 |+ {local-reputation-now;;此次交易后相对于对方turtle的局部声誉: |7 b9 S0 n) k
trade-times-total
# N  R1 g, w1 N  c- r;;
与当前turtle的交易总次数+ Y" C+ j0 g$ \) C" Q# T+ F! _
trade-money-total8 ^0 _: u6 S. T0 E( I8 j' g: B3 B
;;
与当前turtle的交易总金额
8 T- p: y. k% vlocal-reputation1 N7 h: w4 e; I5 p( J* `* z2 Z
global-reputation% ~4 j2 A. m) Z2 _
credibility
" F' B5 ^; o( h; D6 G9 \;;
评价可信度,每次交易后都需要更新1 b0 p* Z: y  \/ Z' I7 t
credibility-all
5 B* C8 A7 B& t8 r7 K4 {" A;;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0 d; {, C0 h$ u% k0 B, }
% J/ \6 s" _: W8 E! q
;;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  R/ S' Z5 U, `$ Q2 R5 |6 T% F" l
credibility-one
5 g9 p+ N2 ~; H;;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  n) u2 G) }7 j6 D% I7 B
global-proportion
5 D( B- w5 l4 k+ y% ?2 c$ `customer
$ H, C1 T9 f- ^customer-no
0 [3 p3 {9 ]1 b" vtrust-ok" B& |9 n$ F5 _# z* X. Z. g0 X
trade-record-one-len;;trade-record-one的长度
& ?) h! t& r, K5 x]
5 K- r  s6 R$ }! a2 A3 }6 N( B3 z' X2 r; N6 t
;;setup procedure  l* P  d4 d' @0 T# `

6 V( E/ M2 Y; P1 Eto setup
( t4 M- l) `/ W5 j' y" G( I  N- b
" d# z, z, H+ D% h- rca
8 r0 }% C: a- K) d. D7 |

8 R& ], w- J$ O. o+ vinitialize-settings

1 A& W0 H' e, U8 i2 y& a
# ?8 ~4 T- I2 k+ p0 j5 bcrt people [setup-turtles]
1 ^( [0 \3 l& F( {0 |: P% X
0 z' ^9 K$ y2 h' ]
reset-timer

: P1 i( @/ c" r( r( r! s2 z
  K  i' ]+ o: zpoll-class
) F6 A8 a& ]: P# \9 A! \' O

+ A: k) Q9 ]8 Dsetup-plots

6 x1 ^; ?! f( j! O  V8 h# H+ h1 R. R# E: b/ @
do-plots
; X% u+ [( j/ M/ P
end- E  Z8 a# y4 K# u1 d! s* B
& `' M4 q! p1 A' G9 k- g( N
to initialize-settings$ V* j' W$ \% q1 w) Z

* k( |# s% [" ]2 n% m$ {$ B9 bset global-reputation-list []
6 r6 o; x$ h& e# N) }5 e, h

  L& j" @' A/ x$ \" Fset credibility-list n-values people [0.5]
2 `8 M& j, y( h# h/ T0 f

4 ]* Y( ~) p5 \9 s/ k$ o, ~( hset honest-service 0

; x8 {2 w4 L5 F5 A5 U, u& A& m& ]; y/ B  Y
set unhonest-service 0

# J6 i2 G! S7 `, J- Y$ [7 j% T7 d  j# V0 E6 s
set oscillation 0

+ a6 b# Z( n( \& C2 R0 N3 m1 S( f
2 \4 S- J% ^) h9 ~# Nset rand-dynamic 0
6 ?( W6 W2 d" T+ k, k8 o
end2 ^2 G1 K* Y( q0 q2 M
, ~8 V$ N! O  ^  c6 C' ]
to setup-turtles
' ^3 E1 S8 U1 \+ o3 C* Wset shape "person"* i- M) \* ?$ U! p% U
setxy random-xcor random-ycor% P# A' w  Z' {1 p* _" Z
set trade-record-one []* [. k, q# l# ^* w, \& ?
8 j( B& O) W& p3 S7 `) _
set trade-record-all n-values people [(list (? + 1) 0 0)]
, V9 M5 \# F  X) T
  K9 e7 q( a/ `$ _, k
set trade-record-current []
- A% V2 V9 M4 o# o$ o2 iset credibility-receive []4 ^: R! l: w/ V; b/ M$ w
set local-reputation 0.5
/ D6 e3 l2 _( J* R/ ^2 W& y# T5 iset neighbor-total 0
/ D; m  H7 P3 n6 v0 @2 v+ e0 n1 Hset trade-times-total 07 L1 T6 ]$ d, J8 O" A! y) [" ?
set trade-money-total 0( s, w! P5 j( `8 y7 L- R
set customer nobody$ E0 M% I" _& \
set credibility-all n-values people [creat-credibility]; A. V4 ^- u/ f  N( ~; @
set credibility n-values people [-1]9 _# E& q- _' B/ l
get-color
2 G; n) O) b) S

& ]+ _2 R" c/ L1 C: Z4 a  send3 I, m. N: z9 v) q' s
! u  i* T2 o/ p; k3 w9 h0 K
to-report creat-credibility( n; D& b; h5 D+ l* u& T
report n-values people [0.5]  |& @4 j& C  }* v% f
end: L- H0 z' t6 M" C& o
( V; S& {2 D* `, m5 G
to setup-plots& k- Q' @4 O5 q5 M1 H
- x: V. O) d4 V  [5 J: k' y
set xmax 30

# A5 ~/ V' J% E7 N0 l7 Y6 B
# ]+ x; C- @% N* vset ymax 1.0

- J3 l8 n# D+ h( y9 G2 u/ e) E5 U9 O, `. E9 x" X
clear-all-plots

, f. i" j% U- W0 c* C& e
! b, H8 j: f! q8 A$ _  t2 ?5 Ysetup-plot1
* }1 }( J5 Z5 [/ A, M# f
# h" v2 ]9 F5 z; v* Z6 \3 u
setup-plot2
  u; t, K8 {5 _. h' P8 d9 k7 p$ |  N
4 g7 c% q7 F9 c/ g
setup-plot3

4 W: a/ e( y# Q3 _9 h. z2 `( r1 send, R4 N+ u5 L' J4 \! q* C
; G, U& O1 S" L: F
;;run time procedures
7 R8 z: n' L! K' s7 `/ y' p, Y) k
: z+ a7 M0 n$ \, v, hto go
4 s. ]' u/ V$ T1 E' N7 T; j1 \' I8 S, O
ask turtles [do-business]
$ E% i, _3 m  w3 t8 p  o. R: b
end
1 c' X0 Q& ]0 J9 ^0 K. H3 I/ z& V. c, ^4 p7 P/ R
to do-business ' k$ F0 o! }0 t0 m8 Z7 O' }

, n% I  c9 H. U, W/ u+ `, J# y7 Y8 |: @; C) w* [7 D) R+ ~
rt random 360
$ |) b8 Z& O1 `- e# a8 [8 w. ?

8 i7 ^2 A# ]5 B! N$ g3 yfd 1
& c  x, l0 {& q: G1 F
; k0 @( P0 C+ {6 b# k1 n
ifelse(other turtles-here != nobody)[
6 k. l$ ?( {2 B% T$ G5 E/ H5 p% N
  F: k2 h, F. N7 F  T5 }3 D
set customer one-of other turtles-here
) ]+ i2 K* Y. s

; m( V3 p" Z5 l$ H& B;; set [customer] of customer myself
7 Q; ?) x3 ]" A* }  H# L

. y, _( O, I$ _$ q2 q( f) L- Zset [trade-record-one] of self item (([who] of customer) - 1)
) Y3 i4 O% N# _# L+ O3 b[trade-record-all]of self
6 @4 D; q8 U- a2 ~7 f" S- R;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
+ W, ^- Y9 Q# {; [' L- F- r
. S7 z: V) m+ i/ m, w# r& a) t. D
set [trade-record-one] of customer item (([who] of self) - 1)
+ n/ j7 ~& x$ [4 H4 L[trade-record-all]of customer

$ Q6 f' h- y, E6 Z5 L! a7 }
# ]$ O. F: a4 k% tset [trade-record-one-len] of self length [trade-record-one] of self

% W# u1 p* y9 g7 ~2 I) a/ }
- s& [) h* p: A& N( w# Gset trade-record-current( list (timer) (random money-upper-limit))

( [4 V& |# ]! I1 M+ ]6 }- s& `- }- i8 q7 W8 i, \: A5 x
ask self [do-trust]
, Q0 p  X* P( [" S;;
先求ij的信任度& e8 S* G' C  s8 E8 O2 G

# E9 q9 q1 g9 D0 @3 `if ([trust-ok] of self)" H- Z3 L" a4 ~( C1 o! q
;;
根据ij的信任度来决定是否与j进行交易[
$ o0 M6 l, {7 Aask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
1 K0 y- X0 \9 g, _5 s$ }' ]+ P, r& x  B. ]# s8 V) I2 U9 l; D1 N* T
[

5 ]4 ~9 m& z5 c( A# x! u2 T; ?# c
do-trade

) {) [8 N3 Y0 X: ?$ f) V6 R& q  y# G% g. z, w7 W' v7 m3 S1 C
update-credibility-ijl
. x: Q% f. g" s/ H) ~% R8 A
% h5 B7 e) `- t' a! q6 |3 ~
update-credibility-list
. \: J+ [; R3 X
7 B+ b% A* _9 q  }& \

' h' Z' {6 m% k/ V% [6 rupdate-global-reputation-list

1 |5 Q0 \% Y+ J
: R4 e: }7 y: zpoll-class

2 `( m8 |7 S6 Z0 S! ^& \
. p3 V7 o( s; {% |2 Hget-color

  x* M0 W" f8 d3 ?6 i9 t( ^
1 `# X* h3 e  j1 k" ?4 z]]
2 U, j5 n- C% f) V# m! c1 H& V/ k. F5 B7 X& J2 |2 C9 W
;;
如果所得的信任度满足条件,则进行交易  C/ k7 S2 j8 c6 G+ i
7 F2 z: H, O9 A2 f
[

& `% _* j2 @$ ]4 y5 d% E$ l3 x4 B( P( G6 A
rt random 360
( f, R1 E9 U/ q: k& \
0 ]4 [1 ?  {, i
fd 1
/ `+ l, D$ Y% X4 U4 W$ u

; D- U" C* D' E  i0 H4 D- D: e8 I]
2 ^6 ]1 a! A, d+ D
$ v& m4 |" F2 }; d! D( Q* a
end
# T* h( J" W. }* r: M  L

3 ~( x. F0 `2 U/ j7 \" ^, p9 C2 g9 Lto do-trust
3 y" Y6 G/ Q! Q8 o4 X, Nset trust-ok False
: V- A1 H1 G& Q! g/ m+ e3 g  q, q
, p" ^- _: F$ n) g4 t4 P9 ]
2 n7 s6 C% l1 U8 w1 Z7 R
let max-trade-times 0
7 m$ x5 g: @, A' o6 f: kforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
7 S! k' ^. E5 S+ W$ E8 P; l) Nlet max-trade-money 0
% W' Q6 i3 B+ o. wforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]  u- u. Q& N% L
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))# j& B4 Z! x# {6 k/ a

+ ]% p, b5 P& m! J
+ x+ J, @0 f0 Y) u6 r. r$ v& a8 [6 e
get-global-proportion" Q) q3 P" ?4 u& e5 H( D' T
let trust-value
! l) g7 s- K( ^. E8 ]local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

) `/ ~' [: Y" _/ Bif(trust-value > trade-trust-value)
/ @$ n% n) @- i3 K+ H[set trust-ok true]
- ~5 s! _, }% d$ \/ wend% d* j+ v( w) g# J
2 Y; r, q- N; ]
to get-global-proportion& }0 M  Y" P- j! `3 `8 }
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3); o5 q$ v  f8 w) G  \; r# Y
[set global-proportion 0]" J9 o0 i+ o) P) g8 H' B
[let i 03 Y. _. h/ k. E, a' L+ N& J/ l
let sum-money 0: l4 @" d2 S* H/ q8 B1 I
while[ i < people]' M; e: M0 R; r
[$ `. a: P! ~) U
if( length (item i" h/ b' b6 |8 R
[trade-record-all] of customer) > 3 )
* g- J) K* F" \2 N3 k
[3 x: w( `9 M3 u: x0 ~8 Y7 Y8 j# M
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
) ]7 b; Z4 I0 u5 ^; O! a]) P( z* {4 N0 r0 p
]
; l' C8 U; }; a  l7 Qlet j 0: R$ k! j" ^5 j' ?0 b
let note 0
* r* y# z  Z- r3 G6 l3 U/ e3 a8 Ywhile[ j < people]
8 \# g( K. q3 `4 C' f5 s$ J- o[
+ A& G  S" M5 ?- j2 Z6 L2 k$ Rif( length (item i' B- O) r2 J- V  c1 N% v
[trade-record-all] of customer) > 3 )
; R. D2 c; _9 L4 ]- T
[
( }) L3 `; Y0 p. J4 C- jifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
" g1 Q, Q5 z4 V" W6 W3 @" C[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)], ~& X8 B  ~* D( p7 [' w
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]( c  r0 [- k$ m0 O' Y
]
. d( T7 f' ?- {) s- }3 Z]3 E" @1 S0 G+ O$ }9 h  ]) ]
set global-proportion note) c; T" ]( V$ _) B) h6 P1 f
]2 A3 i* M7 ^/ U: B, N) c) T$ a( ^
end$ i! a- m9 L+ Z8 f
( j! Y& C' N  ]. _
to do-trade
7 P, K* l9 M5 v( J" `; Z;;
这个过程实际上是给双方作出评价的过程
" B" V$ {) O- ^  W+ W: i1 ?8 Y7 ~set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价$ y, L, x% I* L: l, e
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
9 M3 e  y) }9 L; qset trade-record-current lput(timer) trade-record-current
" v3 w" l" y1 L2 t0 Q1 b- e1 U;;
评价时间
) Z5 @  O) ?3 H  S4 sask myself [8 z( N: t8 O5 X4 Q- I# _/ b
update-local-reputation4 P* u/ e" A! q4 R) N0 }
set trade-record-current lput([local-reputation] of myself) trade-record-current6 i7 e1 j4 O3 d1 Z
]' P5 R7 t1 M6 A! N, q
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself+ ^! i& c+ j" K9 Q$ k7 z
;;
将此次交易的记录加入到trade-record-one
# q6 c* O6 n" T# ?set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
6 L, W  y2 L1 }, Olet note (item 2 trade-record-current )9 J/ A- @3 Z2 O5 ~
set trade-record-current. ^% a# p, L6 ~: @# c2 R
(replace-item 2 trade-record-current (item 3 trade-record-current))
# F' x9 c- g5 ~- J8 t' d
set trade-record-current& L: F: y; F( |/ E4 p
(replace-item 3 trade-record-current note)9 j3 X( _' i6 A5 I6 u7 y
! Y" A1 R4 n! x) o3 X. _

; J7 I. V* c6 M6 uask customer [
# C+ W0 `. _- P7 r, a- rupdate-local-reputation4 r! U: L0 P$ x, a9 E
set trade-record-current1 F: Z9 z7 |3 Q7 w7 V$ q) k1 ?6 u
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

6 m3 B6 _* d, o]
3 r, g$ \  N. R* ?5 C6 i9 X5 x* E+ U
; u2 L8 C* @6 I- t
" u2 F- ]. r1 V; v9 ~0 A2 N
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
1 H* b, F$ G' g1 p$ W- z
9 ?- b" q) A1 e% q3 T* A, g
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
$ I, R6 h2 a( m;;
将此次交易的记录加入到customertrade-record-all. [% I# f' i+ k2 Q
end
: \/ o4 Q4 ?, \4 V( f6 \0 _( w" V: E* e* h. a; p$ T7 w8 H! N+ o) D6 b
to update-local-reputation
* T# u% ]2 J! L9 w( a& j  _) Wset [trade-record-one-len] of myself length [trade-record-one] of myself; T7 b" R) ]' H. V8 _) z0 w/ V5 c
' i( O, \; G# f9 n: S
0 p$ ?8 M6 G" ~- S* T
;;if [trade-record-one-len] of myself > 3

/ {5 z6 C1 ]4 Oupdate-neighbor-total
/ a/ ~  _1 Q  d+ `) @5 S- V;;
更新邻居节点的数目,在此进行4 H, R3 w9 k8 N+ Q1 w
let i 33 N6 Z: N4 Z$ L. n
let sum-time 0
/ z% Q  d7 L2 S6 M. C/ Iwhile[i < [trade-record-one-len] of myself]
4 t* |$ F' p% P8 w. x[
$ N7 o* X* f$ i6 f6 R* B5 Z* `set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
6 j) O. Z! @' o9 nset i
) i! ~- r  V1 ^( i + 1)
2 ]7 |3 t6 ]$ O! \& U% i2 m7 s
], {; s. L& H2 W1 j/ f' X
let j 3" O- s( F3 |  m- a, n* [
let sum-money 0
0 m4 x2 E+ k9 ~" _( {5 _while[j < [trade-record-one-len] of myself]
; m" A6 H* i; q7 _8 P[1 J! m+ `+ q- q* x, b+ t
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)2 T2 q. U: {) ~) Y8 d, k$ n, Y
set j
9 _* g8 d  z. |' m  ?, B( j + 1)

# J7 `% L$ r& r. v2 c  i, L]
. L. Z9 i6 g1 H; Plet k 3
1 X- c+ ^6 [! l% L2 y  \let power 0! D& ^8 f% b  h! z
let local 0, e; @2 B% Q& T: X% q( Q7 @
while [k <[trade-record-one-len] of myself]- @6 N# s. K2 u* K
[
* [6 Z( f# b: H  d; v9 zset 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)
2 Z  E1 M3 s0 Z) I! B' R7 i, @set k (k + 1), p! I( w/ M0 I4 Q! y0 a8 r
]
5 U# l7 b0 P& l0 gset [local-reputation] of myself (local)
) U1 e, x7 y& ~% J- iend
6 s6 j; s* f- B- D8 o3 X/ J$ _+ e( i
to update-neighbor-total
& h! V9 ^# D$ {- b; {6 a, E4 b6 \6 a- O5 z( l2 b
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]" t+ Z+ o6 y; o) b

# L3 D* w8 x# B1 B! o3 n" L
/ g: j& G3 [* M, P+ W
end
% x* H& s, ]+ y1 M* u' `- \2 o: `7 p4 j
to update-credibility-ijl
  |# m7 h1 y% f8 [* u0 i4 f8 _9 L# C8 G
;;
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。- Q3 ^6 F( L0 \* s
let l 0- i9 Z, j* i4 d+ Q$ u( c! i  v" g
while[ l < people ]$ r- V+ `! i; I( t* N8 t2 s
;;
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 ~& Z, P3 o* Y' O8 i' }1 I, m[
$ Q3 d2 u" Y4 D0 G# a4 w+ rlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
; p9 a; |5 Y  t) {0 w. vif (trade-record-one-j-l-len > 3)
: n) h6 B- }# O[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 v' c3 s4 p2 d$ V- A+ l
let i 3: [3 K) c2 z# i
let sum-time 0
2 b) w" L2 V5 Z6 ~% |5 m: |# K$ W; n0 \while[i < trade-record-one-len]
- x5 h, ]9 m; P0 {. y! G& }" }[
) s1 |" c6 x! O6 v1 T& W- aset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
5 v4 S% c5 ]3 r" I$ ~0 Z% X6 mset i
* z6 L: Q) ?9 S) y3 N$ ^( i + 1)
! o' s* o# D; d5 W8 v: H% L
]8 F  C! Z) ?0 W' j5 D, j! ?' G
let credibility-i-j-l 06 }/ X# D0 M: y0 @/ s/ ^  z
;;i
评价(jjl的评价)2 G9 |5 O' W. F2 g  w" W
let j 31 i/ {* q5 v6 [1 ^
let k 4
8 n, `% s# k1 V; t! Uwhile[j < trade-record-one-len]
9 ~6 a. A' X) C/ }+ `- r  G, D[  m5 M. @, A; p% C
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# f5 R" t2 R% U. C, l
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)
; [) ^  v  E+ {/ Oset j
( I% {5 v9 f) I, j( j + 1)
$ z$ r0 U  m( g( y+ g
]6 K' I; b: {. ^9 ]
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 ))
4 g& ^: T5 _, ]
) }$ U& X5 d; V* m$ k# r0 T1 _
  k7 c' L. J  ?; j
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
* n: ?* M7 {: C: Z, E;;
及时更新il的评价质量的评价
, }8 E6 l3 p1 a; d) _set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]. p5 y# G% z3 e
set l (l + 1)
- u0 G  f# E7 M8 {) r]7 _/ i2 n$ t* W6 E! R
end0 j2 C" n$ g# z2 W% V8 L- J

- Y- a) S6 @' `7 m; Yto update-credibility-list
" E1 D9 c/ u9 E6 ]+ i3 k* l1 v5 T3 qlet i 0
2 l0 B  S: `% H: `! X' Wwhile[i < people]$ T' T3 }/ w" M% Q! z5 x0 b* Q
[1 n. i! p' ?0 O9 @+ I) ]
let j 0
5 y* x9 r3 u4 d: g0 _let note 0
1 z8 A/ [! e# d0 s( M5 o, [, Z7 Wlet k 0& V1 i; K4 X- P; v+ M2 S& c
;;
计作出过评价的邻居节点的数目
. ^4 ]" m/ s2 i2 y+ l2 Ewhile[j < people]% c* _; L0 J2 D1 l3 S) o
[
( X' f: }+ X7 q1 d& e5 Mif (item j( [credibility] of turtle (i + 1)) != -1)
! i. r3 }6 n. {4 |;;
判断是否给本turtle的评价质量做出过评价的节点: `/ G5 ?; m3 L3 Z8 l
[set note (note + item j ([credibility]of turtle (i + 1)))) ?* \+ f: [, \3 s: u
;;*(exp (-(people - 2)))/(people - 2))]

4 `- E7 ~$ {* k: @3 F5 K' |, wset k (k + 1)
  p9 I: B1 k9 L. I2 u+ N]
- V- `1 v/ j$ F& }+ ?. Y& l' tset j (j + 1)
/ l5 @8 i; Y1 R/ M  [& p]" [1 f; E, @. P) I$ z" ~; B3 ?
set note (note *(exp (- (1 / k)))/ k)
7 |4 B, O2 a8 C4 w4 U- F/ b5 lset credibility-list (replace-item i credibility-list note)
1 g( M0 B7 v8 N' K/ |set i (i + 1)" _" V3 C: p% {* K5 L4 Y, t
], B6 {% O& `8 Z- C" ^
end( g# U8 n) G5 N  N) m
8 U* a% q4 D( p* y
to update-global-reputation-list
& y* [' ^3 S0 Jlet j 06 P- L9 k) ~- U* v! X
while[j < people]
6 ^' ?9 \2 |8 e8 D* }8 A( E9 R[
8 W: d# @4 b  L1 N/ @/ C* H1 n! ]let new 0
+ f7 K( d0 t6 `0 H;;
暂存新的一个全局声誉
( D6 V( i" F; g+ `+ s7 Elet i 0
2 F( O' d( K% T$ p, Xlet sum-money 0- _& F5 x" s- }: B
let credibility-money 0* n1 ]1 \. ^# S5 {5 F
while [i < people], ?/ m: `& h0 A- C
[3 x" G% R3 c! F: i7 [3 `
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))( V( |, S6 h% G! ?
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))5 p) }: {" i; w( Y
set i (i + 1)) j4 a$ U# Y, Z$ @
]7 K; j9 g/ M9 l9 j- ~
let k 0
! T' U+ O; I% G9 A+ _3 p5 blet new1 0( c/ P" t) X' a% E. W) @5 W7 E, B% _, g
while [k < people]2 ~2 `3 u1 ?4 f" b$ E+ @+ T' o
[
, y: m* W* z+ p# o0 s/ s& ^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)  e" K- h& G, {) c: d$ I, I
set k (k + 1)( @/ ?5 A3 A2 d% e" w/ |  i  l" v# a
]# b2 @; _; R* ?4 s9 ^
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) . W% w- a# J. C
set global-reputation-list (replace-item j global-reputation-list new)
; J6 F, V3 a/ T8 m' X7 Uset j (j + 1)
6 S" D5 P3 a5 o/ G; Q5 l, a]
3 T4 a3 @4 N6 H6 [* ]end
1 }9 Q) F, W' O7 `' f! r
' w2 J% M4 x+ {6 C$ f: j' v3 K/ j# d: F" C
& k5 }0 i* a5 c$ a# }
to get-color
; p; b- |" ?& i# G
) v" f# R8 X- B+ W, Nset color blue
; W' l4 J3 ?" G) b/ \( u/ \
end- R/ ~0 `% M6 E. ~# M
" L- }9 c' q* x5 m) m4 ]0 h
to poll-class
) H  ^# A* ]5 H% U. bend
6 I0 P0 Q0 p" G" O' c# X! G8 v) f  @1 c. l. _- g/ V/ J
to setup-plot13 w, T7 X, c' l& l" O

# i' U7 [' T! Nset-current-plot "Trends-of-Local-reputation"
7 E5 ?; X9 G, |' `

1 A( L2 @3 K8 \! j8 s$ e( zset-plot-x-range 0 xmax
6 E- k( ~( y* Z+ v" O6 F

: a9 F# j4 X( zset-plot-y-range 0.0 ymax
8 l/ t+ V, T: u$ H3 a
end
8 j4 ]8 H( x" P" ]& l! `9 V+ g" I; B: L4 v0 _" C
to setup-plot2/ f8 x8 A4 O& D- E% X8 Z. Q

* U+ \2 Q8 E1 p5 A8 t9 X( {set-current-plot "Trends-of-global-reputation"
2 H6 e3 |% d% {

: K; ?5 B' D9 N) W- Iset-plot-x-range 0 xmax
/ l! I. [1 K# p$ H
' e3 H/ c: g, L/ A- J6 b6 x- N9 R
set-plot-y-range 0.0 ymax
  E/ c) }$ i& h4 b* k3 E' H
end
7 ]2 ?( P% B( a9 I- n# K  G, X5 I# d% `, c
to setup-plot3
1 M, p. l4 L; k' v8 H% h- c- s
6 k! [- O- X& ?5 p7 [" Fset-current-plot "Trends-of-credibility"

* T* i0 Q+ s. c: {; U" \% ]- f
) H6 z1 b8 R8 `set-plot-x-range 0 xmax

' ^+ y2 D3 c) |3 Q9 A8 _: H. U: Y0 D* y/ @' |5 u$ M
set-plot-y-range 0.0 ymax

1 P7 l5 a2 t" s0 h( T( M; L1 g' Pend
3 x- C$ G: Z( _' o
8 M* S! D; V% ^4 h# W. n( o4 m8 Eto do-plots, {- Q2 T3 x0 M( I2 g8 X+ d' d- M
set-current-plot "Trends-of-Local-reputation"
: V+ I  x' D1 ?0 lset-current-plot-pen "Honest service"( x3 ~+ O0 i, {; f4 Z! A$ I
end( g4 s* E4 U+ O+ c. g( f+ M

4 ]+ h( K+ C. y6 k[ 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.
* \, E9 j4 b, J0 j  R
& |, R1 `1 `" x4 r& Q; O6 @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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