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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:5 H0 \& C% D1 x0 Q
to do-business
5 _5 P- s- A+ f" z& r3 g% v8 Y rt random 360' s% D$ q7 |% h3 G& c4 v
fd 1
! b, T7 i* w- _+ {$ @/ m& K# P8 I ifelse(other turtles-here != nobody)[
2 L2 w* |; n; y: b   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.
" Z2 @! K/ q' ]4 I- ?* w. c+ j   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
6 a8 x' g9 x* B   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer- S. y/ V: w# B, A
   set [trade-record-one-len] of self length [trade-record-one] of self
5 j6 E3 J+ Z# j! g) `   set trade-record-current( list (timer) (random money-upper-limit))# A9 t! d2 c9 h  d
! h0 u/ d$ j: q3 Y: j, d/ O  l
问题的提示如下:
5 B+ ~  {( R7 N. b, e: S5 l( C6 Z0 Q8 U4 B+ g
error while turtle 50 running OF in procedure DO-BUSINESS
& b6 r2 I# Q4 ~; i6 P3 o5 x( S, k  called by procedure GO
1 |5 r2 d. G. G' J3 A% H+ dOF expected input to be a turtle agentset or turtle but got NOBODY instead." o2 y5 l, I6 ], c0 c8 V
(halted running of go)
. k0 a3 z0 b1 ^5 L" Z3 _! p& [9 ~' Y/ s4 O" O/ o
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~~
* ]: B7 v( d7 ]2 x7 ~* K" l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
9 v, P) o& v/ Oglobals[
4 @# l4 a( f5 K$ p- i. W' |* Qxmax
4 B* h7 u  I6 F# ~) E$ Z, @7 @; mymax
1 j% Y; w( H3 V6 R: U# fglobal-reputation-list
2 [. X* i' t: c+ Q6 M% s+ }
; Z- U+ u& E' b* I2 s+ Z2 A;;
每一个turtle的全局声誉都存在此LIST
8 o0 h9 [  m1 W' q4 vcredibility-list
9 g/ o* \$ @5 y8 ^% r1 H;;
每一个turtle的评价可信度& Z; X6 Y8 u2 g5 P; V
honest-service
2 k+ K7 P5 Q" Xunhonest-service
9 B; _4 S5 h0 e! hoscillation2 Z. U2 p2 O8 e
rand-dynamic
  Z* D* n! r6 d; w3 U]# m% x- b( J  Z% l4 h  Z* p$ c
: j1 ~7 c* B8 E4 _
turtles-own[' n; E) c' Y& {' E
trade-record-all
6 T& b3 u+ X. D7 n. U& Q' L: c6 s;;a list of lists,
trade-record-one组成
- G# Z+ B6 F9 B% Mtrade-record-one$ T% e8 L7 |' e& q( ^
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录9 ~2 \/ Z( \6 J# \

4 B0 @' k1 r; Z' k% C' k. 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]]
- c) N) R9 ~+ c7 _# Ctrade-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]- L7 e1 V. b6 H
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list4 N+ q3 B1 D9 J
neighbor-total
5 d: \: O: a3 {$ z  b% W, [;;
记录该turtle的邻居节点的数目
8 |* x0 b. m/ d5 B4 Itrade-time- T" V& K3 c. e! ~' J
;;
当前发生交易的turtle的交易时间
' I* h" d- e1 Oappraise-give
; ]# Q% t1 J) @;;
当前发生交易时给出的评价2 m4 a( U& U" F4 \5 E4 _5 @
appraise-receive
7 f7 ^6 o  M; V8 i;;
当前发生交易时收到的评价
. a- h2 l8 Q" U( Z5 c+ zappraise-time
2 V8 n6 _+ B  I) L, U;;
当前发生交易时的评价时间
, M1 o! |4 v3 \' ~3 |local-reputation-now;;此次交易后相对于对方turtle的局部声誉
" X9 _8 W. a( itrade-times-total
" u- S. s! r) o/ b;;
与当前turtle的交易总次数
- h( [1 g  p$ wtrade-money-total
0 }4 J0 u0 O! n7 }) A;;
与当前turtle的交易总金额
4 Q7 @$ Q" v; ]' ]# Zlocal-reputation
# U, L8 w- |* c7 qglobal-reputation
' I% e7 R5 J5 Qcredibility: l" Y5 x$ P+ w# X
;;
评价可信度,每次交易后都需要更新6 V  h$ j- B' B) a
credibility-all7 {7 G* [- _  i* j, o
;;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# k  A) g1 A3 R
# k8 e' m- Y! U
;;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
  e5 n. G$ I) C- j6 ncredibility-one, h, r! \- w4 J, ]
;;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( F0 u, y. a$ n9 W3 X
global-proportion
8 I& x5 S; D8 Y5 y. Ucustomer
+ i/ Z- C5 N' m; {% @6 J) dcustomer-no
$ |! @; K# L- P2 N0 Ytrust-ok
8 Y! E% O" w" [" }+ ttrade-record-one-len;;trade-record-one的长度2 U; b) ?2 v8 Y0 R
]
$ e. D) U& R6 G
( I& u8 k9 c" `; V;;setup procedure
7 n- v+ }2 p1 `$ Q6 A8 t2 O$ g7 I1 n0 d" t! h  x
to setup
7 Q: l: e+ J' G5 ~0 Y- r+ x- S# U, @- H: V$ U) h; W
ca
' z2 b2 u& t( Z' t- h- k  k3 ^
  m0 w( k! n: X8 R5 G$ C
initialize-settings

* j+ T* m) t5 j. q  i2 N( E9 W$ T* w+ B9 m, ^/ |: x7 D
crt people [setup-turtles]

! |1 q3 t, f! |& d" }& _& x$ W( O7 H5 u1 X, ?, [9 W( [* ^
reset-timer

+ r0 Y5 v& A. F6 b+ N9 Z/ S1 @# F0 [6 H1 K( {
poll-class

1 }  h! C! ]: d' c
) b( Z3 Z6 f# V1 vsetup-plots

; H) l! n- _$ N: G
0 k: {$ }7 u0 qdo-plots
; U0 V; P8 [( [1 I+ N1 \; \- t8 x
end5 f0 N8 `( g0 x5 V, O3 S5 a

) h4 E" a6 R( Q( N# bto initialize-settings1 k7 t0 O; C3 F  a

+ {2 r1 Z0 Q5 E. [6 cset global-reputation-list []
* |) t) J# e' a1 B) Z6 j
) {( L* ~5 U0 L; R7 k6 ~( u
set credibility-list n-values people [0.5]
8 g0 W+ h% u8 k
' Z$ T* w) u2 [
set honest-service 0

$ Q& N0 L4 g' e# D: Q* j+ ~& {" e) P. F2 }  F! n
set unhonest-service 0
2 i( k, D- u! ~3 O3 [, a

% K3 B9 |: g4 n; Q8 Iset oscillation 0
0 M" p+ [- }  ~

' p5 J' C$ u/ \9 d# Pset rand-dynamic 0
2 V1 e- s0 I2 F9 Q/ A4 V: L
end6 ?( L. N4 k0 R
8 F. G1 B5 \+ m/ ?  L7 {+ h
to setup-turtles 3 G6 t* I2 q0 K4 N4 ^: f& e% {
set shape "person"
: m" f2 k. m2 e8 Y' @" rsetxy random-xcor random-ycor
7 |# o, p8 _  @set trade-record-one []" t5 {. ~# ~- z8 t) l
4 g: f# Z: g, D$ }+ x+ U
set trade-record-all n-values people [(list (? + 1) 0 0)] 8 S- R7 ?: @  j' Y7 S# |

* _# @( u( s  Oset trade-record-current []
. s3 D# |9 b, E  C1 Iset credibility-receive []
% Q/ T7 R+ {/ eset local-reputation 0.58 _, _' Z6 D9 w- ^, ~% G5 x5 x1 A, |
set neighbor-total 0" H0 z! {4 n* U; o% a6 T
set trade-times-total 0
& h+ H5 s0 a* u4 z# aset trade-money-total 0
& t; W* `* y# M' d& Q1 W7 o! Dset customer nobody
4 e( ~7 `# l( K6 N( k) K3 t8 Jset credibility-all n-values people [creat-credibility]
0 q$ A! W& h9 S+ P6 @) W/ y, l1 Nset credibility n-values people [-1]) G$ i- O, v  N. \# _" p  P" L
get-color! [2 S9 ]/ Q3 f4 G2 ]) A$ ~$ ~
& F6 Z3 f& N0 k, U
end
& H. n; q) d! P! m" d/ `
+ B' a8 [. w$ W7 k  X( j" Wto-report creat-credibility
/ ]' F7 T. A% Q1 o+ \) u- N! T& ]report n-values people [0.5]
3 S. G5 G2 F; g. e, Send
4 ^, k1 P1 e/ W
* v+ ~* E2 K8 Q3 C9 H" Uto setup-plots  v+ \. u3 G5 a' o3 g0 Z& l" H

5 r& ^( @& N* [) b6 r% @, C3 K( O% Bset xmax 30

7 v! G( B) G4 k; R& G2 d3 O* g2 y# V% U1 Z$ r( F' {; a
set ymax 1.0

4 t1 X  Z0 O3 F! w2 Q& u
  S# ~0 V% R- S( T5 Jclear-all-plots
( ^! l8 U# }  E: M

" I, W$ G! J# i. N/ |/ Hsetup-plot1
& Y  q3 C! b; ]) ?5 ?- A

. j; l* L% d% Q. [( k# N7 O. qsetup-plot2
% ?0 T/ g3 z; V' d" j! N) o4 Y

( i. X9 z* w' V& O( ?, @4 v3 _setup-plot3
5 o; |: s& f  A9 M( N% u3 @5 C5 I
end
: Y% t  D" S3 x8 M, [% ~) H' S% R, k# k+ I. B6 t
;;run time procedures
3 |" Z- B/ g; P& ]
& {: V/ e( Z) H: ]to go. Z( u9 H6 L8 u' Z

& N/ ~6 A7 m$ F9 u) a) [ask turtles [do-business]

5 a! z1 b1 Q* @" G6 P0 W5 `end
% S' F7 P4 R# \2 ^8 B0 p. c* d# k9 R& P% E) [
to do-business . ]8 D0 {# \2 @
! p# V9 |: a; j1 @
) Z: Q' |$ }# N/ e/ R
rt random 360
- o! v- d. v5 L  J, Q+ C
+ s# j1 U$ R& _' K& [$ ?
fd 1

4 G' p. b1 n, s3 N7 |6 G& b6 T3 ]8 |/ x/ c' D% I3 L
ifelse(other turtles-here != nobody)[
) C: k$ k  c0 y2 b: A
. s, J/ m/ T$ T! o" ^* x+ ?- }! n. z
set customer one-of other turtles-here

0 E. W% b, a% R( o: B2 p6 n' y+ @3 t) i
. O* n. {) A2 X- J; A2 [;; set [customer] of customer myself

% I( B" m+ A7 p8 [
: S3 H( ?7 M" ]1 Rset [trade-record-one] of self item (([who] of customer) - 1): N" L, y* N4 C* a( ?7 G- T4 q
[trade-record-all]of self$ R8 r7 x3 g8 p% W) }1 ]! C
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
8 k# f0 f$ C% T! j9 P' k
5 Y6 Z! C5 `3 u, z
set [trade-record-one] of customer item (([who] of self) - 1)
4 F& |+ v* T: w) p[trade-record-all]of customer

2 M( q2 K5 u2 i; L: r: [$ g- f3 j6 }3 a$ d! k
set [trade-record-one-len] of self length [trade-record-one] of self

- j( }6 Z7 K6 [) L: Y
/ t3 _1 X: B' _7 W3 Sset trade-record-current( list (timer) (random money-upper-limit))

8 F) L: x6 @/ V. l* r3 l( m( f
. f; Q7 x6 z) }! [# V1 Cask self [do-trust]# b3 s. C) w' B
;;
先求ij的信任度
- R4 X! v+ d8 F% [$ }* L/ N% u  V. H  n. B5 Z% N
if ([trust-ok] of self)
- O4 v# ^; J% S& r1 ?( Y( ^; ~% K! R;;
根据ij的信任度来决定是否与j进行交易[
$ f; {$ y7 T$ ~9 O2 N0 `# C5 O  zask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself# A6 L- I$ N- k; D! o2 C2 A5 i
' D: u# r( m, \* i* y$ A) A/ V& _
[
. S9 D, U9 N& c6 g+ n
; A6 L) I; k* `: O
do-trade
$ |# ?" }, S2 Z$ ]

5 o; h; C6 _1 x  c: N, Nupdate-credibility-ijl

6 F) E. ?$ d4 M. R1 y! Q! b! _: k$ X0 m# V* j! m
update-credibility-list
! M0 A9 V, k  U; }" V6 F6 k
0 b) y& [/ S( D( n5 O& s& q% k' q% i
1 m) c+ a9 E3 `- H  ?
update-global-reputation-list

: }6 N/ [' m& _6 E! G
: m! [& Y, z1 X$ h  e' [- g# ^( lpoll-class

, Y  s4 U. n& U* Q$ y7 k# ^9 _7 _1 h- I
get-color

' l1 R7 p+ h6 `: S$ r+ k/ E- ^- N( K$ Y1 ^0 C# g, {7 W7 b
]]9 C, R/ i7 j+ \- d4 |4 s5 ^
" U. p4 E1 c$ z9 Q9 c" J7 [
;;
如果所得的信任度满足条件,则进行交易
, @1 _  `: N( \- S( W5 @2 m. T0 i& F3 @% _# F% \
[
$ _' a1 P8 k- x/ v
! O. n( r# I9 Q6 u6 y# f: K4 }
rt random 360
) o. Z* P  h0 \4 B* I

4 K/ S6 \" b: W! b) Yfd 1
8 o/ [! }7 x! Y2 h$ M6 z  H
% S( x1 t  L1 y! J* k/ d+ m
]
7 t" ^/ q2 S$ ~0 T

: L& i7 s+ M+ y1 H0 _! F9 ?. R/ Rend

% Q2 t3 J+ b& q: D% p
7 m( G' U- j1 {% D; U' _1 Z7 Lto do-trust
+ o  P3 s+ W. a! Q9 z- D  r" dset trust-ok False* W0 K" Z3 ~3 U4 \) _
# b8 T% J- j9 M- \

8 D6 K- C6 ^( \let max-trade-times 0/ ?: j0 g; l, @8 h# N
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
: i3 r/ V& q1 ~: Blet max-trade-money 0! K- d* N; |+ S+ v* t
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
4 g' G- `5 \0 z0 N# R+ clet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))" V2 V6 F" E. W. b) p) s
% b5 G. ~9 ^% t' r
6 W5 i0 ^3 h4 {1 p* M
get-global-proportion
1 X# R  u+ G) d$ B) m% Mlet trust-value
: {0 m& r9 [, }. X  U; V+ 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)
! O) n) G  i, \, z7 t4 _4 C; s% j
if(trust-value > trade-trust-value)
2 T  \5 n7 R6 a0 d[set trust-ok true]# a6 @7 B: b3 C% O( l0 H1 M
end) y! }. J& ^! N, \# L  [6 h

0 O9 \: d0 ~& n' O& Fto get-global-proportion
4 r% T8 n. b4 S* Z4 a5 Y1 A7 C3 H0 wifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
7 c( _! v6 V& M$ D; n. M1 f' m: d[set global-proportion 0]$ j6 f$ u3 u; N  ~- K0 f; e9 i
[let i 0
2 c9 P, O2 r3 j' F- h) ?' i1 u4 j( rlet sum-money 0
. `# V# c+ S0 q7 Fwhile[ i < people]
- ^, a: i3 B9 c8 N! ~[
: R) t5 \8 l- @7 A: f1 X. f. wif( length (item i6 q3 \, Q' p7 ~4 {7 i7 ~6 h" _
[trade-record-all] of customer) > 3 )
- y% U2 C0 B  Q6 x
[# g; F6 |+ p6 K2 c0 n
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))! s/ @  K+ \0 q* n. l
]
, e* f/ L' ]) l) c! t! e$ X7 y& B]9 Y1 p6 U" t  C% Q& y$ q: _
let j 0, I8 A& r! P( c) k  K
let note 0
" B" S) |9 S  w0 M: Iwhile[ j < people]8 Y- Z- J- I# C7 ]% r
[
7 {- a% Z$ K9 e5 Zif( length (item i8 `, G( ]) K7 q
[trade-record-all] of customer) > 3 )
3 @7 `/ S3 W# i: N  q9 D6 \
[. D# i1 M' b( ?- Y  l
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)' Y% T4 E( ^1 m# b) O( u
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
7 k( `8 F" r3 y; L[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]$ F: q* J# C% z& w' y) |0 _
]
0 I; l0 u) t7 o% []
( v0 S/ `2 N; h) F0 \& gset global-proportion note
) i, g, {' q! _' e/ T8 |; f* d2 l]: W, \; F; A3 w4 L! e, i
end; {/ @8 g3 r5 l+ u2 P# I0 Q

3 r, a" i( Z: z( Q6 W8 Yto do-trade
) |3 j! ]! \1 A( \6 j;;
这个过程实际上是给双方作出评价的过程4 W# s/ j1 w: Q& h& P# w
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
7 G+ S8 v! Z5 G/ h7 M+ N$ _3 [# Mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价5 M  k$ k. B& A2 E0 X0 f9 h
set trade-record-current lput(timer) trade-record-current7 j8 V7 K# \2 H- _, _6 j( s! u% H+ d4 k
;;
评价时间/ v8 a; R- z. |" ~; ]& v
ask myself [2 U4 `+ L- S6 s' L- q* O  K0 i
update-local-reputation5 [& n2 ~5 v1 |( g: v9 U1 d( W
set trade-record-current lput([local-reputation] of myself) trade-record-current
  j9 ?6 z, R3 i+ F% R/ H" a]
5 t$ P5 B* j% u1 Q" j1 E3 N! y1 |set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
3 F! j: I( B1 m8 ];;
将此次交易的记录加入到trade-record-one
% J  L8 A+ g% J* a" k7 Vset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
% m2 o1 d+ M+ y: X  V6 l' Jlet note (item 2 trade-record-current )8 E7 D/ v' r6 g! i" y
set trade-record-current% l7 b& l3 n) O$ R; d: s- V
(replace-item 2 trade-record-current (item 3 trade-record-current))
% v+ T- E2 V/ `4 O
set trade-record-current$ k8 Z$ b2 Z! V
(replace-item 3 trade-record-current note)
# [0 P  X) F/ w# W$ X9 g# H
  D: W! w' o" T2 w8 j
7 @9 E( z, Z* Z) h- E" [
ask customer [
$ P1 s' y- B. E; r' aupdate-local-reputation
2 u1 w' K6 M+ R5 [set trade-record-current* P( @: {3 F. H. z% i9 L. Y# G7 ^1 b
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

- X( y4 Q( H3 v1 m]+ e' B6 \3 x; D3 [! z! X9 D
4 v& C; _5 |& d

( ~* ?% I/ d' j- |; G% C, u& Lset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
" j. X8 V8 n2 c* K: F7 Q( {2 m3 m5 K

3 f) s2 i5 r1 M( uset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))  O# t. F' p. g: r' o! D; d. i
;;
将此次交易的记录加入到customertrade-record-all
) {9 V' J( B* ^0 P- ]- e( P1 Gend
& c+ k) g9 I5 h* m( P( J' ~& l: V6 x# d! `+ q: @9 Z5 k$ X/ Y6 }0 m
to update-local-reputation
" J% p4 }+ C2 D& T+ f2 z9 j: Mset [trade-record-one-len] of myself length [trade-record-one] of myself
8 v4 k: J- P8 d4 X1 O: A! _, S- m! b" U3 L
1 [+ x+ _' }/ K" F- Q, \- d
;;if [trade-record-one-len] of myself > 3
& f- q" v8 f! e2 {+ P& w
update-neighbor-total
* x6 Y  _+ A) d: v) ~4 |# C;;
更新邻居节点的数目,在此进行7 b8 h" @* {2 H7 O1 ^& L+ w- V( Q- @7 n
let i 32 D6 L9 ^5 e* P% q7 z% \
let sum-time 05 m8 D4 L4 _  l! x
while[i < [trade-record-one-len] of myself]
0 y- k6 ~: [% w8 o6 s[! g& Q, n. p0 z! P5 N* ]
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
! N9 u1 d) k4 x4 L* H. E3 jset i' a. c0 g- x7 Y, `) ^- l
( i + 1)
' Z: S  j$ K) N# Y
]
/ Y" n1 Y- j4 w2 k3 Glet j 3
$ h) {" B4 Z. D, |2 f) C6 Xlet sum-money 0; P1 s" b0 z, i; C; M# N' O
while[j < [trade-record-one-len] of myself]
: c9 s$ C4 }! ~( U1 }# J# a" j; x5 l/ d[
" L: `$ Q/ ~! P8 sset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
+ u3 S8 b  d/ ^3 j, ]; bset j
! @' Y' q0 }, y) u' H  N& f( j + 1)

% V5 x4 v9 ~4 D; Z$ Y]  I( t; {1 w7 E0 Z3 A4 X  B
let k 3% J6 E: _) W# T5 B9 d; l
let power 0+ E8 Z0 k+ r& Z% `* ?* V
let local 0
5 i; l& P5 o# G& e/ Swhile [k <[trade-record-one-len] of myself]
) U  W9 [1 w& g3 V+ J[
. M2 ]* D0 a( M5 u$ H3 Y8 a) d+ sset 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) ! Z$ B" _" t) A) p: d$ C* A! D
set k (k + 1)# T( U' P. m' _" [
], y0 C! f9 P+ B  l* I, d: @
set [local-reputation] of myself (local)# I  y. S# L8 s
end
5 u# A- v/ A3 u6 x  L' c8 N+ i& j' W! \, _" m% M; s
to update-neighbor-total8 ^' {7 B4 o; G7 `# a

! E) g7 Q$ y  a" H& zif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
# e* R6 H: w. W" z7 q. N
. k: |) h' L- |: [& l
! s0 D+ M, h& d# i7 n7 A
end
* p3 C8 T3 V6 R/ |' ], J/ q7 u& h3 h$ U6 X& Q  j3 p
to update-credibility-ijl ( z+ I: |5 H. T( v

( ~3 X4 p! S  _6 v  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。9 S9 v% b$ J$ U1 V* j" Z- [
let l 0' G; f0 f- E* ]3 A1 g$ o7 ]
while[ l < people ]
( v/ @6 j: K, ]4 T;;
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
# [" a$ H; L# _: n7 |[8 U1 |$ l* {& v3 Z' r  r) O' |% x
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)! G- r7 U# C- i; J- d* |8 K
if (trade-record-one-j-l-len > 3)- c, A: Z9 \' ?' a8 s
[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
, A  g  O. }; N1 C; [' ylet i 3
: K! P; I0 M9 J  ?- `2 J# Xlet sum-time 03 D$ Q3 O* G: v) [
while[i < trade-record-one-len]& F+ u# M5 ^% H  V( B, f7 K
[
% q# }5 N+ o) W, c1 ^+ E3 Qset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
, x2 w% O; R/ N' Q8 Eset i
0 s4 f$ ?; a- j) s4 H# c% q( i + 1)

- W. ^, A2 Z2 O/ H7 a, I]& X# ]: j* }/ Y- W: y% C
let credibility-i-j-l 01 e4 N( V1 a& b
;;i
评价(jjl的评价)3 ]$ E* W$ E1 z
let j 3& N  e% O# O  Q5 Y" [
let k 4
( T' p2 y8 i, T3 u( A# o+ y+ Owhile[j < trade-record-one-len]
& t* X6 k6 R8 S4 H" Q2 G- t  `( e+ ~[, l) ?& A7 a: N8 d) F7 b
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2 I5 o6 P6 B$ F$ ]6 b9 [8 H2 U8 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)
1 R  d$ S9 o, R. y3 k2 V3 z& l* hset j; t. }8 ]( ~4 W) ^7 z
( j + 1)

" `# y- q$ T  h+ u0 w- j! {]
% \! }# s' ?$ \7 r/ T( g( H' Sset [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 ))
. g" ]" K5 d# ?% a; o8 O1 G! c' O: ~" v3 c) Y$ B9 ]: M6 f. e2 Q: R4 \
6 u+ \, w+ I8 s; Y* U
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))3 F2 P: o, G) }7 @8 i6 |
;;
及时更新il的评价质量的评价
$ y; k% z" U' ?set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" h1 {& e% ^" m2 g7 G9 v* J3 z  }1 Cset l (l + 1)
+ s! M$ x* U1 ~  L8 r3 l" b]
# j  E' o2 s' q" |2 Q& D8 Aend
. {& G0 ], B- I: y- I+ @3 w( J8 D: u0 r
to update-credibility-list1 E$ u$ v& B* j7 g4 D2 I
let i 0
3 [- E7 y* S- j* e! zwhile[i < people]
7 z2 I8 L" m4 Q* c, I2 a[( l% O5 t: s$ B! h
let j 0
- }* B) E3 \$ ?' N4 U6 Y/ hlet note 0
& u4 E  k& l6 \3 i& Vlet k 0, x5 i% p" {$ s6 f5 H+ q
;;
计作出过评价的邻居节点的数目7 \- J5 a; Y* E0 W- W/ [0 m
while[j < people]
1 p7 R; D  _3 H+ ^, }[4 @3 u9 S) y) w7 u* g
if (item j( [credibility] of turtle (i + 1)) != -1)
6 L) m, n# \  U' u5 J3 s;;
判断是否给本turtle的评价质量做出过评价的节点1 w) y7 n! p; }# Y/ c( F1 U( Z4 n
[set note (note + item j ([credibility]of turtle (i + 1)))- r! ~1 J) B* S( |/ I' X
;;*(exp (-(people - 2)))/(people - 2))]

" w' v0 x& F% ^set k (k + 1)  a$ ^$ G' e) q+ _
]5 N/ ^8 K$ \( |6 {
set j (j + 1)' |$ l) A* ?# F# e; z
]
9 R, ]& l8 n1 o% _5 G$ jset note (note *(exp (- (1 / k)))/ k)1 U$ B0 |; d# I  S2 B
set credibility-list (replace-item i credibility-list note)2 N, z8 D0 L8 `: t; x" e
set i (i + 1)4 W6 ^4 L1 T, C9 }5 |. @$ R. N# k. b7 K
]
8 G8 n: d6 B+ w$ ?1 [9 ^* ?* rend8 G1 z+ g& A' P% X+ X5 D

2 R0 Y2 U/ g, u& M4 eto update-global-reputation-list
* R) K3 ~0 t, v% B- Y" F' ?  Slet j 0, h9 R% |' v! J
while[j < people]! i5 T1 h+ [. C- u3 B
[# p7 G& D, \- k* v: v& V9 n
let new 0
) Q9 k) G( u( m; T$ Z;;
暂存新的一个全局声誉
9 U6 m) Z5 {: {* K' D/ ylet i 0" F, {  a* ?  u& I" K2 |
let sum-money 0) i$ |# t  V0 v0 t" Y& F  j7 N8 B6 E
let credibility-money 0
+ X5 g5 |$ M  C; ]! t/ ~! k; Wwhile [i < people]0 }& C$ S3 G8 e' B1 _9 N; H% z- P
[7 s3 u4 a) f0 \6 T/ a9 _
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))% V1 V4 B0 H% @2 S
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))% F' O" x* F; V
set i (i + 1)
4 T* K! Z1 {- z]
0 J; S/ J( E. _let k 0( i, w) E+ f' n
let new1 01 M* b- H! B' e! s- v) c
while [k < people]
3 x- P( I+ N1 L[
# z) d% d' J7 @$ D3 \$ P' G, {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 {" Y& m! _1 ]set k (k + 1)
) w) W. [/ s  G3 M) z5 s) O]% W. F4 N. @3 g4 L, O! M
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 8 |* k6 d/ e: Z
set global-reputation-list (replace-item j global-reputation-list new)  j9 a3 f/ d" S" @0 e1 B) E
set j (j + 1)6 k, J$ ^  S6 P+ r% P
]
$ a0 _( J- [+ r& T) b( X( K0 bend' ]8 g* U3 C% p4 t3 }

. {+ R# S6 v: ?( p  e% T5 g1 h4 ^3 ]" `; F& Z" `( l% c+ z; N
0 f* ^1 |! k) |# d4 a7 D
to get-color
" q0 u. g. U: k0 J# r! P$ X
% U+ G  l" K0 g- L! [set color blue

9 G8 y$ w/ ^# H, x! l, Y( ?end5 a4 o4 h5 d6 x! R9 j

8 A- R, E+ w  E2 W, S6 \to poll-class
! d5 J0 D6 o& Eend2 p: {0 H, U3 e+ J. b0 s; `* S6 v

& ?+ L- V8 l# J) c6 @. \$ {to setup-plot12 J/ S1 J: P4 Z" s: \- ~  V

# Z3 h. h9 S% j; E4 Mset-current-plot "Trends-of-Local-reputation"
" k: B4 z9 u' N! s( P& z1 j

% g) n/ q* W6 g- x3 Qset-plot-x-range 0 xmax
3 N# ]" r, N- b3 A; Y. \4 _
2 \7 a7 i4 ^  x- z6 O3 r
set-plot-y-range 0.0 ymax

$ p7 {8 N; C/ v( V6 V% ~end6 I) n5 N. Y6 Z
! m) P6 d1 j. K
to setup-plot2
8 C! @: Y, H- g0 ?% R" g8 T# \( i! ]( s, T0 T& V- X
set-current-plot "Trends-of-global-reputation"

* t% i/ M" {( L& ?8 o9 X$ z
" X) h& @. k0 ^& K9 sset-plot-x-range 0 xmax
$ R8 ]$ u0 q8 }* o" N6 O  y
9 |2 u  P2 W, w$ H$ s) p
set-plot-y-range 0.0 ymax
- f( l" q8 {  N- |' [$ y. X  l
end
+ Z. z  v0 u& \* w# v) P; Z0 A( D! K+ z# z' X7 d8 J; ~2 D+ N
to setup-plot3
* `8 K4 `, f3 W$ O* G
8 t9 c4 M; K' @5 I9 b+ _& h8 M( z7 Fset-current-plot "Trends-of-credibility"

9 `( k3 H+ g  ^8 u* I% O: w3 G' w6 g/ f& y
set-plot-x-range 0 xmax

1 H# w+ a3 A$ ?8 K3 {( Y0 ^$ }4 c
- j' B3 `- _  v3 U3 X2 {6 [) `set-plot-y-range 0.0 ymax
$ E/ G; {2 C" \7 l, E" _/ a
end
( n- a& \) W: K  U
# q% @. Z$ \# Y" v3 Yto do-plots2 f8 ~/ z! D: S! L
set-current-plot "Trends-of-Local-reputation"4 z3 }1 o1 h# V0 F
set-current-plot-pen "Honest service"
$ U: X- d, M1 cend
6 p  W% S4 }6 E+ ?: W) f! z  m- _9 I1 U' T/ 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.
2 ~$ H# ^3 u/ Q4 L7 S2 a9 g& D+ [2 h- l- f! V- q( ^6 C
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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