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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:; J( z+ g, Y9 k! @
to do-business
- M7 e+ u% c3 M- T2 v rt random 360$ |1 h8 S- P8 p4 _
fd 1
4 t: |/ w+ m* H, j4 f5 Y' M! U ifelse(other turtles-here != nobody)[
% p' e7 n+ S0 v! A' ?   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.  H4 Z) Z2 C8 J9 u' Q
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    . U' s2 [, {* Z! F
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer" W/ v. L4 P  p0 I$ B3 D, f
   set [trade-record-one-len] of self length [trade-record-one] of self
; l3 \& @/ Z: B( u3 ~   set trade-record-current( list (timer) (random money-upper-limit))
* b1 h9 G2 ^7 M5 W2 M9 G/ o# ~
: V: N* b$ ]/ m1 C4 G: G问题的提示如下:9 t, X3 I# Z0 J3 f( x6 ^( w
. d" r* V: |$ B2 Y
error while turtle 50 running OF in procedure DO-BUSINESS- k% c  i4 G. `6 i; j
  called by procedure GO
& g7 k2 Z$ q6 E' ^! XOF expected input to be a turtle agentset or turtle but got NOBODY instead.
& A3 p& k8 q; q" u6 v# Z; ~
(halted running of go)
" t" A9 ~' a( R' N( u
: X& E% T) k5 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~~
; r2 w. S* \; T+ ]/ F4 E% c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
1 c: o. U- ]# ]6 B9 t# nglobals[6 p2 K; R; c2 P$ K4 m0 N) Q8 O
xmax' Q% L" ]3 V7 e2 i: S" q
ymax% c" ^: u7 R+ J3 y) q$ c
global-reputation-list
. U. G' S! S5 }2 K* Q( ]! s  G1 P8 ]9 @- U
;;
每一个turtle的全局声誉都存在此LIST
) P; v- K6 k! t& ?! Tcredibility-list
8 H" Z0 t' J! O. Y" I;;
每一个turtle的评价可信度
* d+ K( F( F; @! [) Y* Lhonest-service, o7 j  t+ u; B. ^2 A& y
unhonest-service
% R" a) Q( z# g4 X$ d1 [) Koscillation
0 [' e: Q  l0 T4 r' g4 H$ w6 Q+ |2 Irand-dynamic
. D& S  v8 U7 N9 h' l]
9 n$ Q7 h8 j: ~+ H9 u+ \; ]5 S- K$ N
2 O! b# @$ |* a1 b1 E: D, G8 `/ Z! qturtles-own[: G9 s4 z. R* L$ u7 u/ O6 x
trade-record-all$ O+ b0 Q" T1 g0 |' y, O: g+ c
;;a list of lists,
trade-record-one组成, {$ S- ^+ K# \0 x- c, c. ?* [
trade-record-one
0 X) {& H+ C$ h3 J2 E# l+ 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
3 l% I. u6 f; {$ }
1 e# v: e, t) q; |+ X;;[
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]]9 m& g3 o1 u# G1 y1 ?; u! v
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]7 B# S, \+ X8 R8 F0 v8 F1 p
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* o. X+ G. z3 e) a# D
neighbor-total
% e0 J- L6 W! b4 c  j;;
记录该turtle的邻居节点的数目0 b' h* T. N( {' _/ D
trade-time6 j' W4 w6 m: @4 Y0 F( E4 N
;;
当前发生交易的turtle的交易时间
( w. i) s1 [7 B8 gappraise-give" [  m5 i4 \8 b, U/ X8 q
;;
当前发生交易时给出的评价
0 a) a0 q7 T- a9 Y! V; e: }appraise-receive
$ B3 ?9 S% b4 ~+ T- z6 B. R;;
当前发生交易时收到的评价
8 f' [) k4 l# o' f9 r4 \appraise-time
5 Y8 v1 F7 p& ~- V5 i;;
当前发生交易时的评价时间6 ]" O( W% i: o( i
local-reputation-now;;此次交易后相对于对方turtle的局部声誉* S! [1 v% u% Q) Y5 V
trade-times-total
+ \& b9 w4 v, g' C" G/ Y$ X;;
与当前turtle的交易总次数+ n( L" ?+ y5 Z# K& p/ u! F( W/ i
trade-money-total% j: F% g! S3 F7 t8 G& Y; d9 t# S
;;
与当前turtle的交易总金额8 r; O& N3 M. o. F5 {, A: t
local-reputation
$ P2 ~. d' Y+ N0 rglobal-reputation
4 k4 b% e1 J$ f  Lcredibility8 \) _' N2 N* h, z8 f8 d0 R
;;
评价可信度,每次交易后都需要更新
7 K/ F. o5 \! n' x" _- f5 X& q, Scredibility-all. N2 v8 a: d# J0 j6 W
;;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
* v  A& m4 |" ?! y) y( u1 X& ^. E- B7 Q# F
;;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! O6 J0 J# v: I+ n' m2 w
credibility-one( [" O- m- ]3 I$ s$ ^
;;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
, D) _# n9 _4 Y8 }  F, L  sglobal-proportion
! c# a  P  }; \; v' Acustomer
3 e6 v! [5 `% Ocustomer-no8 g% B  j' d) Z6 w* ^% J
trust-ok
8 i, @% \2 t- w/ r+ O9 u9 gtrade-record-one-len;;trade-record-one的长度
( C0 J/ [9 H& j) _/ N0 j]
+ i  j$ U# I5 s9 d& D2 V* x3 P; x1 w& c: C# i. b* M
;;setup procedure$ g* {) y# N2 E* H; a; w
2 @- ]7 w  K/ ]; ~6 d$ K2 V4 Q
to setup& E+ ^, {* q+ B% @

% M8 ]! T# {' Q  |8 }. v# ]ca
0 d1 k( i4 |- B6 ^2 s8 J0 u% s

- v& o& l$ n5 K3 G" rinitialize-settings
9 J# c( p, N' R/ g8 T# {) T& B

2 ]7 l- o# ~4 a& J( Zcrt people [setup-turtles]
7 _: e8 x; @' l. h

! F  u7 Z! C/ ?/ Ireset-timer
  J) r/ l  Y( h. O
4 S/ j! X0 u$ D3 F5 t) G# }8 K+ }
poll-class

  w6 D6 [. E5 k% x& v* e7 e5 q8 p2 K, u) D, e
setup-plots
5 Z( P$ x' h2 Q& |  c" B/ X
& _5 {3 k" m/ X- F
do-plots

  |. V) G+ h2 `end
6 s/ o6 d- }% T* ~' e( s
1 Q& \, j( K1 o$ D; C, Mto initialize-settings( T: l8 p, W: x! ~* T; n0 ^

1 |- a( K% S5 ?/ X+ b8 ~9 [set global-reputation-list []

9 t  c8 R0 k' ^
( v: B9 M4 C: F) }3 i& tset credibility-list n-values people [0.5]

" |/ c, u* H! j9 o8 x- r
  M' {  d/ [) Yset honest-service 0
9 q! r0 G( u5 n7 z# _! B6 F3 C, Z% {

: w/ [0 e0 q' l* H) R' j0 wset unhonest-service 0

1 i( Z9 I7 n1 E' X; r2 P/ J0 w: \
set oscillation 0

- c& \) m  U6 o; J2 ~( e
6 a  R+ d) n0 L0 _/ b9 _set rand-dynamic 0
6 p9 h- q1 B0 Y( a1 `
end
% A4 T6 s- _# h3 k' c; N
4 m4 }! p9 y' U: v7 Lto setup-turtles
# i* g- H: V: t6 Pset shape "person"" l* r# k+ i) a  ~) X1 y+ ~
setxy random-xcor random-ycor* x, S/ A) G8 H+ B$ T& `0 Y' r# q( W; g
set trade-record-one []
7 R8 P% s1 G0 O# b+ {" h
; w# I' }' l+ q$ s7 n/ x$ U& Q
set trade-record-all n-values people [(list (? + 1) 0 0)] ! `/ d  K- r  P& p7 T) Y3 H" ?7 B1 Z

  [4 \) p" I0 p* N" _set trade-record-current []* Y" C+ B9 V* T: G8 _& i0 q
set credibility-receive []
. b/ t. N' O7 z' `' pset local-reputation 0.5: V6 m/ Z: [/ X$ L# E
set neighbor-total 0
2 x/ B$ N8 m1 v2 C& iset trade-times-total 0
4 ^: i; |1 g- t8 a. Rset trade-money-total 0
' N2 c( N  [$ d) @  Y6 g$ E- xset customer nobody& ]2 l3 ^* M! W  m( b/ {
set credibility-all n-values people [creat-credibility]( m% u6 ?0 T6 E  @: j9 z2 s: n  I
set credibility n-values people [-1]- U  O+ y' u3 g
get-color
% h! ^0 V( Z% e. G$ }4 J) p
. x: F  G  l. O& D1 h2 D
end
# B: q% @7 N' r% z4 Z- c, e9 ~3 O; O# Q
to-report creat-credibility
7 l2 {' g5 h( ^/ A0 n5 {report n-values people [0.5]
- R' \+ ~6 x5 n+ `1 fend; c+ K6 K; {+ X) ]' A3 n6 l

& m8 l3 G3 Q' v, Yto setup-plots9 \/ ^+ o$ `1 B! c1 d6 k2 T
! K1 l1 z* Z; V+ @
set xmax 30

( h/ P( w1 Z7 N2 y1 l& M( B9 c
8 `, t5 X/ B  Kset ymax 1.0

3 h2 Q" R# Q. O; Z2 {( L( @9 f5 R# i0 x
clear-all-plots
' j5 }% q7 Z9 `6 x! g" `' L
/ V# Z3 T5 `+ X6 \9 e. V' ]  d
setup-plot1
4 J+ I9 ?5 G  C* p2 i% e+ N
: g4 o9 ]- q- c
setup-plot2
, m+ [0 n& b' b1 c9 R/ G
6 c  d) C$ Q- k6 ^
setup-plot3

6 N- \5 [. c7 @5 Rend- x: b+ c# g3 ?
& C6 p2 r( b$ a# M& z& v4 |& D- g
;;run time procedures
# q" R4 H- h  w* j- x7 e3 c% Z+ p, ~! Y; R& r
to go
9 z, o" @* X" l- Y; q3 A4 |. b% f7 I: y
ask turtles [do-business]
& h; L( T* z$ V( D: |# a
end. U- N- ~* @* U$ K5 P6 Q' t6 d" S

  h7 B9 `0 V$ Sto do-business 4 m, }: t8 x- q0 V7 J+ C* ?
" @9 O1 h) G0 ~( `; x  b! x0 k
7 g( r4 w4 z4 Z3 q
rt random 360

+ n5 H8 g- _4 c, t1 F. ?3 ^3 {& Q* I. R+ N; H7 I
fd 1

7 V$ |) h9 R% ^- J  C( @% t
: g  }0 P: v9 sifelse(other turtles-here != nobody)[
, k( w" b2 B0 a! N: m0 }
8 }5 I/ e  u2 S) X0 }
set customer one-of other turtles-here

" Z: E3 [. I. Z3 j9 c8 ^# f
6 q: k$ E7 {# }9 n1 X;; set [customer] of customer myself

' N3 i4 T4 e# y  `) F
  a) _! ?, C7 g7 K( E( }) Sset [trade-record-one] of self item (([who] of customer) - 1)1 B9 A3 O1 A3 `2 H- E
[trade-record-all]of self
8 N0 {; ]) z9 O0 ?8 |) H;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
/ G2 m, @& P" E+ r$ e# h7 Z  s
  t3 ~$ b/ A) V' y1 _3 _9 |) d
set [trade-record-one] of customer item (([who] of self) - 1)& O5 Y2 ~4 [: K* o
[trade-record-all]of customer
4 a/ l2 k: M2 T" G

: G8 p' b( l* l2 \set [trade-record-one-len] of self length [trade-record-one] of self

' D3 h1 y" \3 F9 m. j! }" S5 E
$ Y/ W* B/ E0 F7 g* |set trade-record-current( list (timer) (random money-upper-limit))

2 c- ?) l9 |% v  Q! S* T& i5 f0 T- B; k) C+ E  ]
ask self [do-trust]
. ~$ W% {; u: H, t1 e1 o0 P4 _;;
先求ij的信任度* }! w: u% `9 z" g0 \- T+ Q

. v( D7 p% \6 j9 Q4 `if ([trust-ok] of self), ^4 L, A; ], D
;;
根据ij的信任度来决定是否与j进行交易[" K% t, A) n) ^# }6 s' [& }; w
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
/ v3 ]7 g0 B. Z' ^% q' {1 o; ]# @0 I/ N3 X+ {
[
. s) C; l: T8 m) `

' ~* A( Z( t0 m, I& t3 ]$ |1 zdo-trade

! C' K0 H( |* z* b$ o5 I1 B0 P1 {* U* R5 n7 n4 t' [
update-credibility-ijl

  c0 m# V7 Y! K4 T9 ^1 O, v
, [: h2 K& n( I, z/ L$ R# i% `) K  Qupdate-credibility-list5 n+ U& V+ P7 u* Q

% g" e, B2 w- h* R1 W/ X; j; _) l- d( e! ~0 q
update-global-reputation-list

% L$ q/ G/ q1 Y
/ e7 D; N# W% b# rpoll-class
( N$ ~9 R; ]6 R  U

1 r! q. E# b& @) {8 M, mget-color

: s- r& _) F% }7 i+ q8 v
$ y9 o; X* G+ q8 g' D]]. K" R6 h+ x$ q. E

( a  F& w. J! k$ I3 o" q/ E2 A;;
如果所得的信任度满足条件,则进行交易: \6 _5 D/ Z( j$ |
$ F# O; g3 {0 h- |& m
[

1 `3 ^- q+ ]$ d0 y$ \4 \0 Q6 o5 [% a7 u: l/ U. u0 [+ J1 @, r) _
rt random 360

' R1 H' J7 k: n. g: G( c) E) J" x
/ v: E$ g6 h5 _) c/ C6 pfd 1

% d: d' w2 I  x) t& C
8 v1 E% s, C5 r. l* w. T]

& Q: N( G& n; R0 v- O8 x8 a- E, l- p* M" |/ D
end

, w' U  h- W! j# t; x- v& w, t
1 [* ^: Y$ J5 Q; K( k; x6 Fto do-trust
1 Q. \! J" [( j) o7 W* uset trust-ok False
' E" e& j! _& ~1 j' V
7 H  Q! F9 {( v. {1 h0 l( @
$ X/ T1 G* F+ n
let max-trade-times 0: `$ K: Y) d" n
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]5 n; {! K# v4 c, A+ u2 X
let max-trade-money 0: r0 r- D9 |) g' _' t' k
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
- E* V# ?* N: c0 ^8 ~) S6 V/ [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 ~0 d! P: n$ {
# d  z9 N/ |' T$ t
, g" ]9 s0 q5 `2 W& C$ g% {
get-global-proportion
7 u% m. R8 g$ h2 I; Zlet trust-value
3 A( W5 P3 t0 S! d" Llocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
" w; p5 [: F0 a/ A# i/ a6 Q, H7 X
if(trust-value > trade-trust-value); d5 Y! W  s# W1 [4 k8 \6 K
[set trust-ok true]
6 b. x! H& Z6 P; W, C; m5 k7 ]: `0 Zend
/ q7 p/ i0 Y* Y; Z+ X0 t
1 L7 F' W: t( U9 W" S8 J; kto get-global-proportion
: n  k0 S: Y+ y# z6 Tifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
$ D4 X4 A% \; b9 T* {[set global-proportion 0]# Z& {# b; m( F8 j7 J! q4 K1 L
[let i 0
# ^2 P2 K8 Y* Alet sum-money 0  C+ d; C/ s- f. b) B. D! p3 c7 U
while[ i < people]
- r/ q% S2 F# x6 H[! q. G6 P3 a+ {. ?$ D  q( Q# k
if( length (item i
% i- N7 M  S6 Z4 Q5 j[trade-record-all] of customer) > 3 )

1 l! e% D. V% M* _[5 Q' t6 o8 l3 i, Z
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
+ v! m5 s$ ]0 ^  f' P( y" l]
1 K  s( S" T& A]$ U8 Z8 f% V/ H- y9 K5 H
let j 0
+ z1 H2 }/ w5 s- c8 x: T: clet note 0% ~6 s2 z( }6 ?6 B
while[ j < people]0 a7 H, e; I# C% C: W/ R8 g; T
[
9 i! k/ d' E: k. U+ sif( length (item i
( q. G  Z! {% h) O3 G[trade-record-all] of customer) > 3 )
; o3 X7 n- c8 C! W6 J5 n, [2 ~9 r- W
[' {0 A7 b# C5 o! |
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
# v% y& v! K1 a0 J1 L  P[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]5 |, k4 c2 Q* A) j1 ]
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]+ o3 s4 }( ~# y' f  ^5 X
]
: d. h- l9 }" f% P3 y. ^' T]% v( q6 V* b  d6 v7 i! S  \% \; v
set global-proportion note) n8 B3 j9 U2 f$ ?3 u3 ?' u/ C
]- U! w, r' @9 w
end
  h$ q/ y; p% Q+ q1 y1 L, `. M, j6 |  N' W6 G
to do-trade
8 a* A# P: y) F; Y$ J0 m9 x9 D( Y;;
这个过程实际上是给双方作出评价的过程
1 ]+ Z! |+ P1 c7 l: Cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
, g& R* q. l/ \5 u! Xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价  ?( K" ~: R* W$ o
set trade-record-current lput(timer) trade-record-current
( ?( f% V' {4 L! ~( L: d;;
评价时间" C/ m" J: B" ~8 D+ x  R
ask myself [9 D0 u4 t+ h4 f  t
update-local-reputation. G! @  {: i3 o: c9 c6 {3 u
set trade-record-current lput([local-reputation] of myself) trade-record-current: Y# a% z2 E2 |
]
+ b/ r* X/ b: d2 g. O$ u& [: Lset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself; W% Y# A% b! m6 W) v8 n" _
;;
将此次交易的记录加入到trade-record-one0 g6 M3 k$ p6 l
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
" S& `( C" e- [0 f, H* glet note (item 2 trade-record-current )7 S: C5 z5 o( ]  y8 C0 Q: k6 c
set trade-record-current
& t3 F: P( \- g- f% P9 h  k2 ~(replace-item 2 trade-record-current (item 3 trade-record-current))

; ?, x% T  {2 ^set trade-record-current3 x6 `2 p* l! d5 L* p* e0 y
(replace-item 3 trade-record-current note)
( S9 ?' o! @( a0 F, m, W2 D) q1 M2 I

, i* a! c6 A9 M6 Q. i0 `  e  Eask customer [  V3 e. v1 a+ H2 ^; J" U
update-local-reputation; p* {) n+ B! U, J
set trade-record-current# ]* Q4 l+ b. y  R* H7 z' D
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
6 i0 j) [: b' _! k( H4 `% l) Y4 ]
]  |. X7 O9 |# h) s4 q, }- [

/ ]7 c- G& l) U9 ^& C
+ S8 [  e2 Q! b8 V, c8 [5 h
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
/ ?2 i# I. `/ O: J' ~: f
) p7 c* h  U( B$ D, I# J
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
" m& l! u2 s: y# J: i;;
将此次交易的记录加入到customertrade-record-all
% N( {4 \/ G8 hend
7 E+ T2 s' h3 k1 r* \+ X2 e+ D9 E2 T) g3 S2 e( O  {# O
to update-local-reputation
$ u8 i6 n. M& j1 g" Gset [trade-record-one-len] of myself length [trade-record-one] of myself! z# g" f6 Y; S4 x3 h9 O
# u- E: x" t3 b7 z+ i$ A! c
# a) D/ S8 q1 S. q4 `
;;if [trade-record-one-len] of myself > 3
* }, |3 h7 E7 |( p1 ?
update-neighbor-total
+ i+ V% ~( N# L" @: K;;
更新邻居节点的数目,在此进行
; _9 d/ j1 _4 H5 Slet i 3* K* o) j2 u$ `+ X/ F$ N
let sum-time 0
8 l; O8 X5 g0 N! S( n; @. ewhile[i < [trade-record-one-len] of myself]
! d; d0 X# `. N# b" O# `[! |1 ]4 M( W' D& ^. ]
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
. X) a- t6 B, C- }8 e! h" O  ?set i: {" S' c: j# U% {  G& L! j
( i + 1)

5 g4 D5 [5 ?  C/ t' o& []1 T$ R# v- D4 g. A9 i: y1 a" P
let j 3
( g* L$ N" \+ x  `let sum-money 0
$ a+ G5 K; s2 cwhile[j < [trade-record-one-len] of myself]
) I) W4 P- a. C  D2 h[
7 b4 u' W9 |5 E$ G! b* l' @2 @- Cset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)9 x" v* \  G+ ?
set j+ X  }/ Z0 W, M& ~3 @  A! L
( j + 1)

; n' t+ g9 y7 p; F. g2 ?+ {& p]
" ^9 @4 r0 c) e+ Y7 r" Blet k 38 N5 f: F6 N0 C) H4 w8 K8 B0 W
let power 0
  Z) Q  Z+ Z1 b: {let local 0
7 r0 W2 \# f# F; a) [) p) }while [k <[trade-record-one-len] of myself]
5 e' K& d, z6 _! M' w* [[
/ ?0 V/ U  _: B- ?9 H- Aset 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) 3 {' U  d8 C/ s
set k (k + 1)( M- y; U$ h# t, Z* M; j7 V* W
]* m& g/ U8 Q/ _8 X( D1 G4 e
set [local-reputation] of myself (local)2 j' _$ }! p, ^
end
( J# L$ \5 V. Z7 o. y' i
( ?* ~- b1 |. g  c. p$ R! uto update-neighbor-total
5 q$ h4 X. P  y
2 U, ?* }2 C; A8 mif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]( `2 c' C: B: ?# I" [0 W
: G- u" G& r, L* w) @! o8 t+ w
0 h% P* J6 k$ Y/ V
end& @) X& Y2 o; @1 _" N9 I& V3 Z
" e! I8 Q8 \$ j% K( \8 \3 Q7 p; v" N
to update-credibility-ijl
# S5 \1 R/ Y* y/ J& U* B) b# X
5 v/ a8 Q) d  }, l6 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。6 Y5 w( T- @; j. G% Y/ Z9 d
let l 0& }! L" w* \) v% t0 E6 q
while[ l < people ]9 p& C( f; L) X# `
;;
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
! R2 E( r7 o) n8 x3 [[
) v4 b) _5 e( n0 O* ]' k- H1 Elet trade-record-one-j-l-len length item l ([trade-record-all] of customer)  ?" O2 W3 ~2 a, @3 x
if (trade-record-one-j-l-len > 3)7 y  T. g0 ]# u
[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: ?6 B- e6 y+ h& B( V! h
let i 3
; w- L$ e+ J5 @+ Dlet sum-time 0
4 }" V; v+ `1 U3 ?2 G4 F2 dwhile[i < trade-record-one-len]
5 D) ]8 b+ ^2 R[
+ r5 D, \8 u  V1 u: `4 Mset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
( @7 J( S/ {6 Oset i
# d1 T% B0 ^, B' |  B& u( i + 1)

. W2 ^' B' _+ Y, c]9 e7 O) u/ K3 j9 C0 T
let credibility-i-j-l 0
4 C* u7 I) K3 m" b' Y* L, }1 e7 U;;i
评价(jjl的评价)
8 ?) {& B1 N( u4 t! Xlet j 3. G0 O1 f. ?( l/ w' _2 G7 ?: [' \
let k 4! p" i" K3 `# g8 V" Z/ ^7 ]
while[j < trade-record-one-len]# {8 J9 I% I" e( u/ K
[
; `6 e7 }2 c1 I8 V2 Swhile [((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1 Q% k' e* u* V: ?
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)0 m3 U: N& y9 T) X# m* V
set j
  c2 }. u. {8 ], Y( j + 1)
3 f! z8 H7 l/ _) W
]* U$ g' c& a6 Q8 Q8 t
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 ))
3 X; A6 H# V* j8 E0 C* D, a$ q; C; ^4 s; T

/ M& `0 k8 m' j( Q7 I1 m$ O1 olet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
# ?( [. }. U  G- {' O3 I. _;;
及时更新il的评价质量的评价
5 ~- B9 i. c/ L) Y  q3 b9 X7 qset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]- A. \# B, ~. D6 w
set l (l + 1)
* V7 x& f* W2 K' i: V# a9 D( c]
4 E- K) m' M) t; tend7 k6 M$ l" |! O# ^- _

% K- F, N) ~7 J- S2 l$ T; F8 j5 Kto update-credibility-list) u' V9 U6 L* H7 \
let i 0% B2 e" h4 K) k
while[i < people]  D2 v5 B* N9 x
[% f1 H0 B8 {5 ]4 Y# }8 M
let j 0  t- i  W5 J& V% Y  R7 k& V1 `* \
let note 0  ~. g7 c! R1 _2 l# e& P
let k 0
* ?, v& M7 I# A$ e3 {;;
计作出过评价的邻居节点的数目: A8 o  ^7 H9 N7 a
while[j < people]
5 E: q+ F% P, ?2 p5 x[
# x* @: ?! H/ `% @7 D+ j8 bif (item j( [credibility] of turtle (i + 1)) != -1)0 E  r9 Y6 ?3 l) `2 P1 ^; M
;;
判断是否给本turtle的评价质量做出过评价的节点
% o2 A; s1 P( h& A6 x7 s' M  |$ L- ^[set note (note + item j ([credibility]of turtle (i + 1)))
5 n0 q/ N& j' K& N5 k' O;;*(exp (-(people - 2)))/(people - 2))]
8 y! U! }( [9 Z: h
set k (k + 1)8 ]+ S: [* K+ l
]
8 A9 f3 ^8 ~5 z: j1 f3 I. wset j (j + 1)
5 I/ h2 a) d. w; w- |1 b]
( X+ E* r- A) k7 X7 jset note (note *(exp (- (1 / k)))/ k)- C4 L6 n" x$ l# M. I, C6 Z
set credibility-list (replace-item i credibility-list note). O2 l+ b4 A; @/ W0 v
set i (i + 1)
3 F( ^1 ~$ Z+ Y# j]
; d. |* g3 T( k" K1 Eend
; R3 _: D: u# q1 X" s( ~9 q6 q0 [2 Q5 J# z4 a
to update-global-reputation-list9 B+ k% I/ E) H  O! d
let j 0
% S; o) S' {" O6 awhile[j < people]+ q* B& q" e4 W& w: O+ m4 ~0 n
[2 I; B$ e, H. U+ H; c
let new 0. j1 W% {3 T5 U
;;
暂存新的一个全局声誉8 P8 G, t% w, e' {
let i 0- d7 o5 F; [/ i6 X/ C; D! F+ {
let sum-money 0
$ U$ L$ h) n; z6 ylet credibility-money 0/ C' N) m! y6 M6 f
while [i < people]" n( l! x+ _' G$ U- H8 ^: J
[/ C0 |% I6 F6 O: m
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
0 A) Z  J3 f* Q% q  ~9 t1 P" iset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
9 B& v" [8 w; K9 d8 x5 h( O. Lset i (i + 1)
& v- f7 i: o, E. x& M]
; I. S* l- K1 l% X8 wlet k 0
* y# W8 U, e7 P3 `. m. ]4 t, ^let new1 0
* t: H; n/ G% Pwhile [k < people]
8 @6 p/ [  t2 L0 E2 d3 `) ^) K( R[, @$ q7 r) y8 W! V; r4 [: E+ |$ T
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)
' u, {* [4 a3 L& B' F0 J% f; ]! h1 yset k (k + 1)
' x* c: h3 @& A; y! e' ]! B# O]# \; r; c! E) Y. \" Q
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 9 s' X( X" f. ]% g* k; M! K$ k& b; K
set global-reputation-list (replace-item j global-reputation-list new)
5 z0 b: x9 a, Zset j (j + 1)  h: g1 n% C* ]1 X! l' o- b
]
+ C/ K% J8 H" u. H/ k3 Nend. V1 ]6 [! j0 r

/ a$ G$ [0 g) i. {- c7 q* z  L) t2 _
: J+ ]7 X5 s" ]4 {" ^
' _4 C% z2 T. ~to get-color. o2 X  `( w2 q
6 L2 o( W- q$ r% ]4 r% z
set color blue

& w8 F$ V* }7 U' a- S0 F+ `' Send
( ?# ?5 X( }) i/ c# q" }; k+ G) O: g/ f9 y
1 \' J% y% H' l" G: I/ g8 h5 ?2 pto poll-class
9 e3 e$ a6 g, u6 \0 a5 p, y% i4 [' {end* H3 t3 B1 d" x1 D0 T

3 {7 ?% ]1 f1 N6 L2 f/ m3 S, Uto setup-plot1
5 Q7 F; g# x  A2 d  E6 @- o. ~; K) A0 g$ D9 ?3 ^
set-current-plot "Trends-of-Local-reputation"

; ]1 R+ J1 ]: i7 p8 K( i& t% H5 q
' P, B& \5 N7 s! f6 _set-plot-x-range 0 xmax

, V% |. `  o4 l. N4 n  ^6 J7 X! j: n0 d
set-plot-y-range 0.0 ymax

, H1 c& w2 x6 K/ D4 X/ wend
% N/ S3 w' t+ A& S3 r2 ]+ a& |% i0 V% J
to setup-plot2" V/ v# K' d6 N

$ o5 ?' D: T7 ~" [1 ?set-current-plot "Trends-of-global-reputation"

3 ]1 K) \/ D: O! A, D) U0 L! K. h, H' z7 F
set-plot-x-range 0 xmax

8 p6 e6 T) }) G6 ~) Y$ D, s. n$ V! b9 B" g4 p% {& E: C
set-plot-y-range 0.0 ymax
0 @5 l* f' h/ J+ q) C( Q
end8 U8 z. h9 R# p& s4 D
  O6 p9 c) b6 K* E* C
to setup-plot3: k5 A% R- y3 S8 n

( o- B( I' Z( Qset-current-plot "Trends-of-credibility"
& l& A/ p) f9 n! H
' Y/ s6 ~$ ^- t* X! c! ~& }
set-plot-x-range 0 xmax

: p% E% q" [; I: }: M7 }/ e
6 _. [# n1 L6 q5 S) }, n7 v0 \7 rset-plot-y-range 0.0 ymax

9 |; I/ k  Q1 o# Q9 u# \! u, Mend) U  v! G& f+ x/ T

, i* i% w$ V1 W/ s8 jto do-plots
- H. |$ }1 c/ w( aset-current-plot "Trends-of-Local-reputation"% {: g, X- _7 n4 O6 d0 e+ ?* k
set-current-plot-pen "Honest service"7 O$ w( f- a  Q0 L- J; h
end5 n4 A* d2 e& @- J

% A7 B& i/ d: ]- `[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.) x4 M& p6 p' m5 q& m, D4 U
; i6 [! S7 D3 h/ q* P" Q  [- J4 Z. |
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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