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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:
- ?- Z" Q( \0 C" @: oto do-business
7 n& j8 h3 m8 G. ?" s rt random 360
: a+ {( A5 T2 ~! `3 P4 O9 o fd 14 w( s5 ^: _& C
ifelse(other turtles-here != nobody)[
7 y8 C  O3 n& l+ }* v; |$ C" |& W9 L   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.7 L% {( e3 x/ A
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
* _/ L# h% ?1 o1 }! w   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer/ g$ y& I! R3 x1 ?+ K! Q9 j6 z
   set [trade-record-one-len] of self length [trade-record-one] of self
+ l) l+ B% c  ]   set trade-record-current( list (timer) (random money-upper-limit))
) V2 l& |( \* Y
0 M# V% V; K  F2 t" R" O问题的提示如下:, t( K/ u* L* Y- d

" N9 r! i3 A! }error while turtle 50 running OF in procedure DO-BUSINESS
  u+ T9 t. a4 |5 a9 T9 e5 x  called by procedure GO# B  }5 s# g: r' q9 Y- I3 v0 q
OF expected input to be a turtle agentset or turtle but got NOBODY instead.% ^4 h# D& Y- z
(halted running of go); f, G6 D3 Q9 {
+ t; x( m2 B& W- G7 t  n
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~~9 d2 l2 z7 @; \3 ~4 M
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
+ Y; E7 z, p1 `  D0 ?' x8 ^2 |globals[- L# L3 G  x6 {8 V
xmax
' r" p6 M0 t% }4 c% cymax9 Y+ a3 j! X. A: F; b% F: m( T
global-reputation-list6 I3 i6 h3 w0 R; L9 o/ n* P
5 b8 m% l# a) I8 \! @2 I
;;
每一个turtle的全局声誉都存在此LIST
4 Q# P, E6 \& [5 ?, V0 ?credibility-list
5 d) Y" A" `7 z. q, \" s$ Z;;
每一个turtle的评价可信度
, c9 P/ {- z. C( s' Y: Fhonest-service
" \: B% X; s% ^6 \; B8 ?2 iunhonest-service+ ^2 |( P  p5 r) z; H
oscillation5 F; Y, o/ j, x0 J: t
rand-dynamic
5 X; j; ^* e- G' C) R0 a9 I]
* u, h6 D% N6 X0 z+ E
0 ?, j( P+ v  f1 n. P& i' I# z8 |turtles-own[
% e8 H; l. F5 A4 O! c$ c, Ctrade-record-all+ r0 P1 G' p2 V7 U$ L' l: }2 |& b
;;a list of lists,
trade-record-one组成9 @, j: S6 c* V( `
trade-record-one) M, E- y' y  F8 a2 \/ V, f8 ?
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录# G5 J9 X$ `1 ~: l

* ]% q6 w* u  U( O' 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]]
/ q7 m( d8 l  B8 M* {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]
2 o% X3 S& W* R0 j" hcredibility-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
6 P! S- |$ q( i2 y9 l# @' hneighbor-total' _! [4 t, O1 W. |
;;
记录该turtle的邻居节点的数目
% N: W, y, z( ttrade-time- {5 T. ]: K: U+ ~8 W
;;
当前发生交易的turtle的交易时间8 X4 v% M( F  E+ b3 e& p" Z. V
appraise-give
& G) ]3 m5 G! F# D1 K% n) y: V;;
当前发生交易时给出的评价% X" ~, d: k! S- J* u# y# ]6 e
appraise-receive
. Z/ z9 i% e2 w0 b" };;
当前发生交易时收到的评价3 s; T3 O0 Q  h2 ]
appraise-time
# ~% C* T4 W( n2 L5 p# `- w;;
当前发生交易时的评价时间
3 Q7 s: M, I+ k- w' L- z# b  }local-reputation-now;;此次交易后相对于对方turtle的局部声誉$ E- }! d$ m7 ?8 i
trade-times-total
' _. `4 Q( ?0 V' S# `5 ~' W;;
与当前turtle的交易总次数% s% O1 z  X1 e
trade-money-total& Z5 C; y6 I; d; H. w7 f, l9 Y
;;
与当前turtle的交易总金额
) v- _9 a+ Z# C  r7 Rlocal-reputation2 H: G# t$ p6 c. p3 A
global-reputation
* Q( P! I; a2 E) t7 xcredibility
- @8 S' `$ ]% R7 i+ {;;
评价可信度,每次交易后都需要更新: E+ T+ P' U" B' b; o. h
credibility-all
9 a% i+ j6 V; X1 [9 |/ I;;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- _8 k+ U7 \# d  b

7 L+ e  [9 O' U5 }# `: V;;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
# y7 W; H$ x1 a1 p4 Qcredibility-one( U0 C. s; S+ R
;;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+ j1 B  ]( ]6 r9 c5 X8 C9 R! u% Q& @
global-proportion
' V- H, }1 V. hcustomer
- h8 R1 Z, @* C/ t" V2 Z' \# Gcustomer-no3 Q0 Q; A: S# f9 Z+ w4 x0 V
trust-ok8 u! w3 [  t+ d5 N4 X. T
trade-record-one-len;;trade-record-one的长度
. F) V8 w/ O, Z  ]]
3 I3 W: O) s2 {8 Q, b- u
2 _. q! Q, c3 a. r# d;;setup procedure
6 E2 m1 t, E) \4 `) W
! s! O1 {* P4 dto setup
- |' C3 \' ?- O1 v3 M& A  c, P! B+ y" R
ca

% b% u  ?- c0 t
+ X' `6 v! @, e1 \initialize-settings
/ }5 j4 p1 y7 S8 P! J& t) \2 O
4 T! d8 b  v6 e! K) [5 b) o. X
crt people [setup-turtles]

2 w2 a6 G7 j% o# ~+ d; r4 e- J  d$ v7 A3 {+ z) [0 J
reset-timer
6 w/ @$ b+ [& u2 k0 N+ s+ W

- U6 a) N, W8 _9 f8 @7 A, Vpoll-class

& ~9 r9 |: q( C6 t$ ~6 P% o! S- B9 k5 g4 I; Z/ m' S0 E/ ~8 V
setup-plots
8 M3 w5 [; Z/ a

$ n+ C( Z* m/ J: T1 tdo-plots
. G) \) r2 b0 N
end; h: i! j. E& ^) e; y
8 k: W( l; E7 E6 P# U" [. S3 Y, h
to initialize-settings! c6 L% f$ `( D: f4 k1 V) b, P
; E. X; |1 u; m4 l1 H" j
set global-reputation-list []

0 V8 z  h' x% B3 [& x; b5 c% o
8 [5 \8 M4 m( dset credibility-list n-values people [0.5]

- p3 \) Q  Q4 H3 G
& J% r1 ?- M5 Z' g- p/ u# rset honest-service 0
$ P7 {# b8 u1 S0 |

: N/ K& X6 [) M0 N8 sset unhonest-service 0

8 O, ~' Z) U' M# ^$ g# Q) |+ T8 h% `, w; E) {8 J
set oscillation 0
- @: `" y$ W. N. p
  Q! r( q  O2 C! m
set rand-dynamic 0

% F$ a5 N2 Y- t( \8 i- M4 @end
' |9 X' Y0 \) I1 t2 \$ ^. }% t7 s
4 L: L/ N4 c& B6 x* L* ^$ R* _to setup-turtles
/ y: e4 U6 s8 @5 X/ wset shape "person"
7 \6 |( }! P/ u8 h2 Ssetxy random-xcor random-ycor) R6 O5 B. t& z7 m+ K
set trade-record-one []7 K3 q; P! Y# E* N5 S& A
& G& D* t0 j% U8 g" z9 P# ^3 U5 _( |  \
set trade-record-all n-values people [(list (? + 1) 0 0)]
6 o3 m& @9 Z. q, K5 R3 |- Y( X
7 ?: s5 q# k. t: [
set trade-record-current []0 {$ k9 H& L5 G! x, q8 d
set credibility-receive []
+ J: x  Z5 b  u+ ]  Xset local-reputation 0.5
( }7 O0 ?  a  G0 mset neighbor-total 0
1 ~$ N4 A( ?# Kset trade-times-total 0
: C% x% r. M" z- h$ T0 Zset trade-money-total 04 z, {# D  T  W. J9 w
set customer nobody$ {4 H6 Q% `# S1 b* k% |
set credibility-all n-values people [creat-credibility]
0 W/ I0 k' U. u5 }set credibility n-values people [-1]
) Y' N7 S* t: @$ e* pget-color
$ M, P& I" i( V# @+ S1 m

3 ~/ Q- l& H) [  D3 t0 q+ eend! }& h" R9 ~/ Z0 ~/ `" T2 W: }
8 K7 g; `9 O% C( c" B* U$ s* q
to-report creat-credibility
% Q4 r/ j* {9 Ireport n-values people [0.5]" ~' N9 v/ P2 l$ R+ R
end- e; V$ z+ X. v% F7 E

8 \5 |4 p+ b7 u5 h  \1 Dto setup-plots
6 E! F! y( A3 G
3 s% M5 a- t5 D9 l& Zset xmax 30

9 G7 e) ^2 a) K( m5 z# z+ l& m% `( A/ @+ _: F. O! U  Y, V: q
set ymax 1.0

$ L- U  @4 W  ~2 ^; N  A
, r2 d! i9 i4 H0 l0 H9 l- `$ [clear-all-plots
/ t2 F! \/ u( x
; r3 o+ A% W8 |# K
setup-plot1

" F3 f  }4 r2 s8 U; v" `# l7 y* T( {5 y! C- E
setup-plot2
" K1 {( v$ S/ F

1 {, G. R8 E0 T8 b0 k, Vsetup-plot3

9 \' \# q  I3 @+ d' m8 K1 _end' _% h; W1 S% E7 R! s* Y
& x4 B5 c5 i( _8 o, S
;;run time procedures
8 o7 ?1 s  A( F/ a+ Q
  G7 q" Y0 c2 `' ~to go  I! S9 y9 @: h* Q! I' \

/ T2 `( a; ?! R. V/ Bask turtles [do-business]
  {; V% X; J- I% F
end
) ]% t5 T6 h1 @2 I" F' K4 U3 e) O) x) [6 R( T7 q; V2 E7 e
to do-business 7 ?' y. ~$ x" n2 ]5 s( M
$ `" ?8 r3 D" s5 }( p
( Z$ x5 a! d! Z
rt random 360
# f2 B( \8 Q+ k" h) l
- r1 U/ Z- ]+ x5 j2 a- K$ S" }
fd 1
2 f, v' S* z+ p, B, C4 J2 o! b2 ]9 r

# p7 S  f5 q6 u' j$ h  mifelse(other turtles-here != nobody)[

( H! k( [7 g2 s0 b/ J
% i7 j3 y/ v* M7 Y+ z8 {$ Zset customer one-of other turtles-here
9 z$ P4 R0 i- ]8 h
8 _& B, E2 }$ y- k: {6 X
;; set [customer] of customer myself
) z4 |3 j4 L2 ^/ ]: ~
" ]0 ^8 V3 e% w
set [trade-record-one] of self item (([who] of customer) - 1)
' D! y% a" V+ h0 t+ S$ p6 a8 P  L[trade-record-all]of self
: V9 O- ^& L) ~$ @; @+ z% k- `: P;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

. b9 X6 k5 ~7 t; j3 e5 L3 h8 w/ U
. K  h0 ^, I: K' w" l9 mset [trade-record-one] of customer item (([who] of self) - 1)
# l3 w8 V/ g% z[trade-record-all]of customer
) g/ m: _( M  F

, ^' c4 W4 v) p) F4 Aset [trade-record-one-len] of self length [trade-record-one] of self

5 F* X" \% {" D* X" l+ _- a. P/ i. }7 G
set trade-record-current( list (timer) (random money-upper-limit))

! `" I; Q, L) Z; E
9 V5 c5 v1 L) B- W9 I) ^ask self [do-trust]# i/ N5 }- U2 l" d" a
;;
先求ij的信任度5 {; D9 V1 I8 t' Q' X) G
& _0 ~$ V: p# y
if ([trust-ok] of self)
' G1 ~! i( n% v+ G$ e7 w  e9 L# S;;
根据ij的信任度来决定是否与j进行交易[$ V* {; `9 `8 ?5 F
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
0 X' Q  M0 o8 D3 r* t; U: R/ N/ j1 \4 d
[

/ \& X# t, f$ D, z  F9 p
+ m2 c( [, r/ ]/ j" b2 hdo-trade
0 d. T3 [: g! L
( d& Z( d0 p  p+ F, Q1 }  e% W. a
update-credibility-ijl

  ^" e. ?9 J4 D0 r. r7 v6 T4 A8 @$ x; E1 p
update-credibility-list
/ t3 ~& k0 c! S6 O$ l' [
) N8 R, z: \9 G9 S$ {' W" I

" P* ^! C: e- }& x% ~update-global-reputation-list

$ ^( D. N* v5 M9 I1 b& v* d
5 Z: N! \: J. j2 D) E4 tpoll-class

: _4 ^& ?* U' H3 A, I8 E# `. ^5 |( \4 U0 N( O% t
get-color

0 o; g6 Q  X8 J' x! t% z; [6 N
]]5 o( n( O. F+ l% e5 H- t
. d; m- r) p2 W  \% z
;;
如果所得的信任度满足条件,则进行交易
1 R' A; n6 r% q" L1 M
, K% C, ~) V5 {; x, M: h[

; Y; e2 d( ?8 h. j, h0 K+ A" O. f" @: L. K6 o, X. \
rt random 360
' }1 R& k# L# p

; I& B: G% @7 B8 qfd 1
8 _+ o. v6 M7 i0 _) \* k! C/ b

# \% U0 n& G% f3 H]
9 v$ u7 o7 d6 ]# L) W7 U" T, I

+ T/ b1 [) J3 @0 v8 Vend
1 x" |3 l1 Q: C* m! m  [3 L

/ `7 i' W2 h/ s2 d$ A  @to do-trust
& l" ~- B1 g9 n+ w5 ~# Qset trust-ok False+ n: c2 n; D  Q2 m5 I
7 g9 L7 t4 L5 N  L2 o" F9 U6 ^
7 ~9 f- H7 D  |& F! {
let max-trade-times 0
4 J: a+ V3 s2 M0 I* bforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]2 a4 |4 ^( n$ e3 ?5 u
let max-trade-money 0
  J( m+ r+ E& q  L7 P. Q0 t5 h, `( ^+ ~5 Iforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
, }  [9 x/ Y: s, r; dlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))" o5 ?; L) \  s* d1 L" t
, W; Y5 P  S3 s( l" i
% q& k( n6 S( \. `- _! m/ A
get-global-proportion7 v9 C0 @9 {7 r. y1 [
let trust-value
, u. o  Q6 w: o0 ~) K# Slocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

* O& E. ^+ T! Xif(trust-value > trade-trust-value)
7 p0 R# B+ z& I[set trust-ok true]
; S8 S4 m9 J( c# w0 F1 p' g. C2 [9 _end3 {: e9 M  O, D. @
0 t6 Z3 b  d6 f# K
to get-global-proportion
+ d' t+ S0 q4 y* _4 Z! ~: @  @! qifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
9 y1 X1 s% N! S[set global-proportion 0]
, v: N- K( u% f# p: i) h[let i 00 ^- H2 c# q/ M6 W9 x( ^
let sum-money 0
6 `$ A9 o6 [2 R7 s) Z/ Hwhile[ i < people]" f% I& T5 G0 ^$ X1 w: W! p
[& G7 E1 T" G$ x
if( length (item i
* S, ]' V8 N( {3 c0 R[trade-record-all] of customer) > 3 )

; |/ v+ ?/ q2 G7 S[$ p2 |9 L3 C5 D) s: L
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
$ G% V+ X/ c0 }% H* R& I]
( Y6 E$ w% j( w. \9 d& u& ?4 g]
2 Z$ E9 t2 R7 H+ H5 Slet j 0
2 Z" U( j0 S$ G0 y  q2 |let note 0
# S2 i/ `. ], |' J& E+ F" Nwhile[ j < people]
$ A+ }; m' o. @0 B9 u, H[
, J8 ]2 y- _  o8 ]if( length (item i
2 y6 F9 M! P4 V8 t! l[trade-record-all] of customer) > 3 )
; D; C! B; O# F7 m1 t; U  y
[
+ |( F3 w9 u" Zifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
& C' ^7 T9 Y" A[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]1 F: [8 c# v1 H
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
9 h$ E* \* ~* R' |1 j- N2 N* x]
$ m- ~/ Y- G' n/ z" u- ~( r5 Q, l]
& b4 D6 t5 ?: Q8 `7 Dset global-proportion note
7 Z3 `  f2 y( h+ E3 ^2 i]" q. ^2 V$ R, [1 g' ], y, Y8 O
end& k/ K# E0 i+ p3 g! @, {

. S- Z+ s9 ?" Y! O: U( @4 u4 Ato do-trade
* O! L* Q* w1 _: K;;
这个过程实际上是给双方作出评价的过程* g. @# j2 g! X, V, i
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价% I4 b# c; u7 a2 A: N# B7 k4 K
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价" ]9 `9 e- }/ ~8 b8 k0 Q4 x9 d
set trade-record-current lput(timer) trade-record-current
; s7 w* }; D3 X; T6 e4 \1 B;;
评价时间1 v. ?. _1 t: Z3 `. b% N' p$ g
ask myself [/ S8 `. K2 |  J
update-local-reputation  K% s$ l8 A% m% p# _
set trade-record-current lput([local-reputation] of myself) trade-record-current0 a* u7 w( f) g( t
]
* ~% z! b# }6 A( ?set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself" Q) W; [( t- x8 O
;;
将此次交易的记录加入到trade-record-one
  D4 o2 j1 N  w; p, C5 lset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)/ N8 X$ _3 E# E2 I- F1 ?  B
let note (item 2 trade-record-current )' j! J' d/ x- k! a3 U
set trade-record-current; t6 D* F# \& M) e$ v% n& H
(replace-item 2 trade-record-current (item 3 trade-record-current))
; K, ?, x! h4 |- I  ~
set trade-record-current  Y  O) E+ ?5 r# j: J# [% E$ }7 I  E
(replace-item 3 trade-record-current note)
6 N0 o. ]' `. r8 z% s- w4 ?( ?8 B, p/ m% _+ L
8 J* b! [1 _' u. k; W
ask customer [3 r9 w# J3 v# v+ k6 g9 v  g
update-local-reputation
% |  I) O/ o4 T, uset trade-record-current7 J8 g9 B' D8 g. D
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

+ h: p' h; E; E3 ]+ L]
! J& `6 e% w, @& Z* ]# t1 T. U* f/ N" J2 Z
- T: j* |1 J6 E$ V5 b
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer0 x: e% v5 D6 u8 T& O% u* B$ ~& S
4 z& V# d5 z8 ^( \; P
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))% P5 ^5 O) x, G# O4 ]  o: `
;;
将此次交易的记录加入到customertrade-record-all
4 G: I4 m, P7 c2 q3 d$ Z; I6 Dend
+ P7 `: @1 t, Q. R  H1 {. S# u) O
& u1 D& ]8 v( s" v* F8 p% `2 C2 ]to update-local-reputation
- A2 s+ P: b# R( V7 l0 d# A( p; Nset [trade-record-one-len] of myself length [trade-record-one] of myself, U' L( e, ]1 P; S& D) o% J

) F; i! D. m$ e' x
$ F* W  T6 d8 Q$ q3 C;;if [trade-record-one-len] of myself > 3
$ l0 I! ^5 @3 @- p
update-neighbor-total
4 |. ]- k+ y# N/ W0 \4 I1 q3 J;;
更新邻居节点的数目,在此进行
: j4 H' z0 L" L; |1 Z! s  b( {let i 3! Y; M1 K  J# q9 X. G2 j! x! G6 K
let sum-time 0
9 Z- q6 Y" \& Pwhile[i < [trade-record-one-len] of myself]- T& v" m+ Z- P; \) _5 d
[
. a! D9 Y+ O" w% P3 p( Wset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
$ a( C  a7 d: V5 l/ T* q/ Zset i* E( P+ D1 y; M) ^1 ]' U. e
( i + 1)
+ U6 Z: P1 v# F& F+ i0 e. {* J
]
, C# o# }) ~, N7 zlet j 3
& o0 h5 D8 \) V; G: Jlet sum-money 0
6 b4 ~& l2 c" W" C1 x8 hwhile[j < [trade-record-one-len] of myself]! S3 S9 R9 a/ W, E' h2 x3 z% W; f5 W4 F
[
& n; J6 O5 x. k# t3 _$ T+ [4 mset 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 u+ H! D. f+ N' {set j$ j/ n% r, F: a: g9 e: n! \7 {  t1 Q
( j + 1)
: E( b" }6 U5 C( D+ X' m6 g
]
% [8 o9 Z" R" h( |let k 3
* Y/ e6 v+ T+ L2 Y2 E4 nlet power 00 @8 X0 g! V4 e' x0 O, j% I( v
let local 0
8 I( x6 p( x: N+ H% {; ^+ V, Rwhile [k <[trade-record-one-len] of myself]
* [2 F$ a+ m3 ~" f# s* m4 R; \[8 @8 o1 M5 u# ?
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)
) m7 \! N/ I$ M' Zset k (k + 1)
# e1 T4 w0 j% U: O$ ^# U]- ~' R% |" F0 z2 n6 r% m* {) e& B
set [local-reputation] of myself (local)
# }- o  ]- j# Y. R4 eend
6 r7 a6 A; P: B( p1 N/ [! u( A& E* Z
to update-neighbor-total; h% `3 D1 g( E7 a# t0 r
. Z: m: k+ n- J* `
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]& f/ y" @% q) Y2 Q
' o% u* N6 u) }8 o+ m9 p  ~
  k) P* N9 q, y* m
end9 d% w) p6 A, P& o

% J' Z( c0 ?$ cto update-credibility-ijl
# @5 o& m9 `  E% Y& [
% n5 a! u* h0 o' {;;
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。
1 D- e" o+ x" F- W& G. l- Hlet l 07 Z: L! d' G" M' v% {; G" _
while[ l < people ]
/ K* \# A- [) L$ @0 M  w' R;;
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+ v; y. A1 v( T  c6 d[1 V& {/ y, ?/ I7 y* ~. R
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)( s  x" n$ H6 ?
if (trade-record-one-j-l-len > 3), K/ n+ ~. Z( f
[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
+ {. l+ h: |( E) ]8 |+ Llet i 3: Z- E' P, C" y! k# `
let sum-time 0# {! }+ Q# t9 v8 _- H
while[i < trade-record-one-len]  F6 O) k" q' U9 |& E6 Q
[  P- d+ S, ^/ `+ C; ^% f0 Y9 Q
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )# |2 H# k$ H6 T0 V6 o
set i, r) y! s0 j/ d) p
( i + 1)
& V* ~- w' ~- ^2 P3 i
]
5 ~+ Y- [/ J* z" w- }let credibility-i-j-l 0
6 X% a8 W" _- G7 ];;i
评价(jjl的评价)! b5 G. j7 E( a
let j 3
" ?2 _3 y( N5 U' c  Jlet k 4+ z& s: C8 y, [: V4 o, T* X
while[j < trade-record-one-len]
% o3 u8 ^& O) U# [- M' H5 p' M[
+ E, _5 L2 D2 m' |0 x7 A2 a" awhile [((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 M" x3 x8 a: l7 ]3 Lset 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), l$ ~( _) B1 C. i
set j
+ G7 F2 |- }4 Y; {( j + 1)
* p4 n- I5 s# W; k' \% D$ H
]+ p, l- V8 f7 x% Y
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 ))2 M/ c9 `1 _. T- F) ]2 A* J
, x* b8 ?% f/ g! _7 F
6 t8 X) `$ r: d5 H- b
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
3 v, h6 D- c: w) e# V;;
及时更新il的评价质量的评价
# d5 z% |. t' U$ V7 Y( Bset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]2 g$ T$ d/ Q) g, [  ?% v7 g. A
set l (l + 1)4 h3 ?: T9 o! m2 i* C& G
]
" N2 Q' Z6 F5 p! xend
* i1 X! H# n' c; F  w2 O6 t% o" X% P" K( p( C
to update-credibility-list
9 K) k  V0 Q2 C; M# E& D7 Tlet i 0: y% C" h* R! T, ^. X. h; _
while[i < people]
) Y" t! Y7 @+ `0 J; g3 I/ b[
# o* o) ^5 D% H$ Y: {let j 0
7 J4 }$ L" q- n7 j7 _% a' w( O" Slet note 0$ i, C( c: P* T# A
let k 0
6 `3 Q% T0 x6 }0 U;;
计作出过评价的邻居节点的数目
, j( ~+ e, h6 h8 I; F5 u3 _while[j < people]% k5 D9 F" \/ ?
[
! B% E9 C  p- x! [) f3 b: c. bif (item j( [credibility] of turtle (i + 1)) != -1)
5 s5 b1 V/ M; R$ @7 K: E;;
判断是否给本turtle的评价质量做出过评价的节点3 @: |, j0 W4 n! f% w
[set note (note + item j ([credibility]of turtle (i + 1)))
& y# A) _1 x# R, Y! `( E;;*(exp (-(people - 2)))/(people - 2))]
/ {( r3 z% N& F( {+ u
set k (k + 1). E$ F& v& G4 F2 R/ x4 Z
]
$ q. j: s/ `2 Aset j (j + 1)
0 A0 c* ]% e( b( }]
4 ?1 s- i# I1 q, K8 V+ e7 T! sset note (note *(exp (- (1 / k)))/ k)7 s. j3 @, z9 V2 X- a
set credibility-list (replace-item i credibility-list note)' G& c5 X( {, m& h
set i (i + 1)
, O% G0 F4 e, J) |5 I3 r! ~' b]
! w9 n; s$ U$ u# Nend
' N. x; v4 w; k( R; G/ k& r" X* E8 S/ \0 e& ^: \0 V8 D/ v
to update-global-reputation-list
5 ?- s3 N1 C% B9 ?let j 0
% g+ M3 c" w8 E2 p9 C, a, ]7 Twhile[j < people]
$ @8 O: x' f' a[& a$ k5 P6 M4 M( f# w
let new 0+ r6 Z" z, W- w1 a
;;
暂存新的一个全局声誉; \  t+ J( g& o' n, R7 U" N
let i 0. o7 K& _- o" j4 Z: s; q9 y
let sum-money 0! u0 |5 |( ~) G3 N$ d+ H3 h
let credibility-money 0
9 P% o' V. L, R# i" F. i1 X" ^while [i < people]
/ {) r) f" Z( |0 I7 Q[
  v8 D9 {- D: `3 j. A5 tset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))* I3 ^) q' ~2 w7 |8 M) s+ j; b- q
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& u5 `# X. H" k% R) x8 v2 Hset i (i + 1)% x+ |/ q$ e. \. M, o2 g8 Y
]+ i% B2 c% \0 ?  B0 J8 ^
let k 0
  y, m! }6 L# }9 B  \4 j! Ylet new1 0/ G3 W( I9 k2 N. E% U; H
while [k < people]
) L: W8 T) q0 q- n: p[
0 O9 G& r& a/ W& Bset new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)2 X4 T* D1 a8 X# @8 F
set k (k + 1)
; t+ K- y0 w  U+ |. N7 {0 S: Q- R  |]
) G/ k5 k7 R/ o. C% ^8 |5 x' O2 sset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)   Y2 k- {2 P' t
set global-reputation-list (replace-item j global-reputation-list new)7 {) X, G+ Z- S" @+ t( d
set j (j + 1)5 U- B& n4 h- B
]1 K5 {$ ]- ~$ l
end- e5 ], z" d7 C$ P9 w$ G: X  n
( {9 G4 [: g( i1 m3 X8 T
0 e/ k) q6 P) c  n( I0 L5 @2 P- r
* X3 H, W. U6 q
to get-color$ j) y. \- u: U7 w
1 i+ c( X/ B$ f0 D
set color blue
8 G8 h4 a4 V& b- i
end0 H) j3 v7 [9 n: e1 Z
+ P. b/ V/ v" A6 q2 ^
to poll-class
9 H6 Z4 [7 @" f  g5 k$ C4 Oend
9 j6 _% \# M' H; [5 |/ Q
7 q2 B( N% h) z1 a" lto setup-plot1
5 Z* O, G$ q2 s) a0 u; R0 U1 _1 b) [( x. \/ r
set-current-plot "Trends-of-Local-reputation"

* n' [! o$ G% W9 C- c/ x' [# U) U4 Y  B5 d, c+ @3 m& G' J
set-plot-x-range 0 xmax
6 v  D4 P. Y% e3 k
9 t# F2 Y  ^" a6 q1 _- s& }0 K- g
set-plot-y-range 0.0 ymax

1 y- j! v: x' L) c2 e6 Wend& L: A# [+ P$ Y! V
8 ~' w" n2 S; @' L; i; p3 {
to setup-plot2
8 @+ p" W+ z( D! ^& f/ ]5 I3 _4 y! y, E: C' o
set-current-plot "Trends-of-global-reputation"
/ a' l, @3 Q3 n, o6 q

* n7 T) B8 `  M5 @7 @set-plot-x-range 0 xmax

: k# U& i7 k6 q. n0 U& g- L4 _
* B& T6 r: }# nset-plot-y-range 0.0 ymax

& G/ X! ]  ~2 r# t+ d2 O  |3 ]end
7 N) K+ R% x: ]. J# u  w. r$ C' L4 g
to setup-plot3
4 J  G5 ?4 F8 T& L" }# X+ K) k3 C1 s, G5 w  z
set-current-plot "Trends-of-credibility"

8 M0 E4 {( x$ U1 L7 o( b2 L/ l7 [- Z  i# Q
set-plot-x-range 0 xmax
$ R: t- K9 v. J3 S

4 x8 {: R3 Z, O, S' D% x8 u2 dset-plot-y-range 0.0 ymax

1 B, [% d1 E* w7 B9 e# c& |& t9 {" dend; p, z( K. H2 Z0 r
* J# I- M+ E# S0 o
to do-plots
7 P1 `4 g) G  \set-current-plot "Trends-of-Local-reputation"
. p+ Q9 u. N1 R, [set-current-plot-pen "Honest service"
6 @. c; n$ e0 ]+ ^8 r% p3 Vend$ L6 a- w; J7 i& H# T
& X  o1 x% p! M# r6 b
[ 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.4 m9 `) h6 H# e. r$ L+ C  D

- q* F* ^  Z1 q- `6 B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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