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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 f9 A- u; k2 T3 r& m  v# S; O7 q
to do-business
+ N/ c" i% x4 |4 K0 J( w" J rt random 360, e. s" |  o. s3 R2 `
fd 1, t6 \1 J9 k! I* e
ifelse(other turtles-here != nobody)[
  a  n8 Y( H/ z1 O/ f$ S   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 Y! R- |) E; c   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
5 k, H" j# @$ }/ E7 ^: S   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer/ y7 A" V# n$ }2 e
   set [trade-record-one-len] of self length [trade-record-one] of self
: ]: k8 N- m1 s& k* C0 Z% y8 g   set trade-record-current( list (timer) (random money-upper-limit))9 e' s" L3 F/ L% |

! c- n4 @. I8 _问题的提示如下:( l5 _( P8 h) a. x
3 C4 w8 z4 m7 J: o
error while turtle 50 running OF in procedure DO-BUSINESS2 h3 o) W9 ?6 T5 E. u: S% k: J
  called by procedure GO9 \# D) X3 s( i% w9 S) Y! m
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
% L% j* o: a: V7 o0 G
(halted running of go)- W2 P' T# T7 x2 K! q" K

1 V" h3 b# E9 {; z7 X( }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~~% }  p/ Y) }3 y3 Y' p
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
2 _! ~2 r; x/ B' s$ _3 j- y. Zglobals[
0 s  {: O- z& T2 R2 `xmax
0 n/ c: Y7 v' a; _ymax7 |- f3 ~% k# h( ?% _, g. n" G# A
global-reputation-list+ v" r0 I5 D% g8 d6 N: N0 I

1 P  u$ H4 Z+ `- H; }0 I) J! {;;
每一个turtle的全局声誉都存在此LIST
3 \+ H% d6 o0 u+ x' L+ }% Dcredibility-list
3 n0 [; I/ Y% `;;
每一个turtle的评价可信度6 i+ }. U( U$ @6 q- T# ~
honest-service0 ?- t: |2 t( A. v
unhonest-service
. ?5 f1 E7 v( z3 R: Boscillation( j3 L- I1 |9 {% U" u( z3 i% `
rand-dynamic
2 |! E$ S+ c, I8 c9 q& L' e]
' _4 y/ W" U9 e0 u% P% Z/ ?" Z/ c9 v0 K" N! N1 t" R* {" ]2 X
turtles-own[
3 X8 f: e" h" D5 W; Ntrade-record-all
: F0 M! {. l5 S. q' b* _;;a list of lists,
trade-record-one组成. X( F; O: p2 b8 N* f5 m( x
trade-record-one
; D2 d& I8 l9 P- w( R3 y$ [;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录* Q* q% W7 P! J+ ^
+ p. h5 `% e! R2 R" b3 A6 J
;;[
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]]) O% d" }- A( y( k- p
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]1 z7 _) `. }1 U5 P0 d$ C  V5 o
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list1 d) \/ S9 n7 L1 [/ ^* ?7 N/ T$ T
neighbor-total% c% t' {+ U) Y9 K' o; t
;;
记录该turtle的邻居节点的数目# ^# I& T) v9 g& O* Q+ Y: b
trade-time
0 G/ H! v& z& l7 \;;
当前发生交易的turtle的交易时间$ T  R! u* D0 _6 Y; }9 P) r9 `+ c
appraise-give
) z/ B% T6 u1 b;;
当前发生交易时给出的评价
) Q! v0 s# ^4 w8 z) S6 [- \appraise-receive
8 L' g' \. O1 U" o, ~' q$ F;;
当前发生交易时收到的评价
$ S. ]5 F3 g* A) ?4 W2 o8 K% }% C5 happraise-time* R3 b2 C! _* }7 a) t
;;
当前发生交易时的评价时间
. G7 T: n9 [; L4 f- k% i0 I) u: plocal-reputation-now;;此次交易后相对于对方turtle的局部声誉( H) @" J7 R* P/ ^* P* q( f
trade-times-total, f: L/ p/ e( w9 L" `$ n9 U' A  D# e
;;
与当前turtle的交易总次数* @- |; A$ k* t4 {1 P
trade-money-total
0 K* q/ e- p# M8 ~' ^) i# x;;
与当前turtle的交易总金额
" [. t+ y5 {5 _local-reputation
: d8 A( [1 b4 @2 w+ @( z& Aglobal-reputation1 ^/ R1 q1 q+ _. N
credibility* k! y3 Z! H2 u) N1 z' V7 J
;;
评价可信度,每次交易后都需要更新
0 N2 c& u% f+ d- S% c+ w5 \% kcredibility-all
! x$ G4 M2 t5 h: n1 b;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据1 G. ^# D  j2 _6 q

: I: p$ V+ d" ~- n5 O;;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
. f4 C2 d! H/ u4 y: B$ `! d" \credibility-one
' R3 R. B1 g, Q6 Z$ r: N8 w/ @) k8 D;;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! e! L) D9 S  [& M0 I
global-proportion4 @' H, w4 R4 I
customer. W$ I9 l5 @8 ]( @% G% G
customer-no+ D3 M! j6 q& J
trust-ok4 z6 J& F5 Y: N
trade-record-one-len;;trade-record-one的长度4 d+ ]: h) `/ E% j" A
]
2 e! f# X- M9 `  s5 `- R! k1 X. |1 v) l+ n" \; z
;;setup procedure
3 g- ?' C* D/ O, K# Q9 x
1 ]9 z' f+ l$ @# v  `to setup4 e* `; @  \- W0 O# Z8 [
$ e+ \. L% n' N2 k' T7 K0 O5 a
ca
" m5 Y0 F& W) Q+ {- w+ W

" m; O9 p6 H* m! x% s  Zinitialize-settings

5 O- W, v6 ^' Z1 H! f6 @/ a
* V1 n; U! T  E3 B0 B/ Acrt people [setup-turtles]

! T+ e4 M! S5 f6 _) k" M* G/ Y& T5 s  [* k8 s4 ^
reset-timer

& x" e" A! R; N
: q3 S+ N* l1 c) `  Z. Npoll-class

3 i' t! U( X* ~( n' k6 A, b7 a1 {* V/ Z& M5 i6 k
setup-plots
4 J. D/ }+ ~! F- @) l

* K) T6 n" O! e/ ?( Z% Qdo-plots
# e6 D1 p, r- r0 J
end; p' F9 f6 d8 R3 i. s
6 B7 u; U+ K7 r5 B. b! N7 [* ^. c
to initialize-settings
  v0 G. q+ L* p+ }8 I1 C$ @* F  J0 }! h/ ?3 u- y4 |
set global-reputation-list []

# O0 J% f- T* O( J3 t% X! @' t8 h# |1 V! h8 `( d7 O
set credibility-list n-values people [0.5]
* g9 i/ s! w9 t* t6 [0 o1 Z
; X, M" s) H3 y0 [9 V# a% q5 V3 Q
set honest-service 0
/ ?5 s6 {6 I5 V
2 k6 J$ \7 t# [3 K  f" w, j  s, ~
set unhonest-service 0

0 V4 k) c% {; C0 A2 h. K
$ B& }5 ^# ^+ q9 Pset oscillation 0
6 ~/ t9 s7 t- |0 K+ f) t
  U- N; L; \, u* [' j) A6 I; p
set rand-dynamic 0
% p5 T4 W% J7 _5 h7 s+ Z6 S
end+ h6 X' O1 S5 j+ f7 Y! Q9 a( o5 \+ H
; j6 k2 f; u% r' R
to setup-turtles % }" T% }" x4 \4 J2 }
set shape "person"
$ v- s0 j$ m. h5 e2 lsetxy random-xcor random-ycor* K7 \0 B# m# Z5 o$ h$ h/ D( \6 s
set trade-record-one []
( N) P, p. T$ m. q

3 Q& T/ H% ~, I: vset trade-record-all n-values people [(list (? + 1) 0 0)] 5 T9 W( g% \% U& P% [
; A8 W# a! u1 A5 }
set trade-record-current []6 s" J: `) v5 `: g1 t% s2 }
set credibility-receive []' ?' q6 W; P, G8 [" U/ l
set local-reputation 0.5
" a" N3 i: x) i- _set neighbor-total 08 l1 I2 w. {# N% o, n: q
set trade-times-total 0. M1 K+ U# q4 r& E, f4 X9 \
set trade-money-total 0
) ^6 v' W3 ~- U4 wset customer nobody
7 O% I  c' u, A9 ?; t, k8 Jset credibility-all n-values people [creat-credibility]
  l  R. N; V' ]0 Sset credibility n-values people [-1]) i/ N+ {+ ^7 N
get-color
: w9 ~4 m+ S% q1 {) v2 v

; W+ w7 z8 b  }end
6 @" J7 a; H' J& ?8 W
" P6 W! o* {) |1 h6 S) w0 b, X) ]% xto-report creat-credibility7 h5 M* I: N% H' Y( K
report n-values people [0.5]
; n' A' e9 k/ [7 K: z$ ?end
' d0 r2 Z& F2 O* S) z" ?2 }4 ]# H( |" }- L6 U
to setup-plots) O: R& c9 m" C5 n

# z3 f0 \' |7 X/ k+ h; r& Xset xmax 30
2 r& K' }1 q! K- K6 s

$ r, j0 d$ N0 t" k, Eset ymax 1.0

# @" G2 w" Z% E! g  Z7 y+ j. ]' U( @5 f  \" n2 A5 n
clear-all-plots
2 _! O! m: @- u8 M9 D" G

4 D) s6 D' V# J+ Qsetup-plot1
9 @( G" g: c* ~1 G

) t+ B7 j+ }$ h/ M% b6 vsetup-plot2

9 f9 o/ @7 R5 q' @% T- x7 J0 E$ ]0 @+ q+ {$ _* Z) D
setup-plot3
3 f( A8 m* z+ u
end
! n1 ^$ @/ ~# A, j, y5 L( R/ p
. M, R1 _7 v6 `, Y;;run time procedures8 Y1 j% p( @) {9 T
4 t& j) O+ |$ X# G: R( D
to go: V# _% H/ O, ^" H" A* @( \

8 m" K5 C7 l/ E4 k$ iask turtles [do-business]

& @& G# o  m, m" L2 lend
+ v& C+ h, G- u: m% h) j, i+ J. G
to do-business ; }$ `  C2 P2 C) a8 C

. V, u! q" K+ [) p7 y! D( p0 e* {. W% @% \* {, y' q3 X; D
rt random 360
( n1 x9 \) {/ O. @# J8 E
* ]4 ?" u# O& S" |3 u
fd 1

. S6 U6 b5 v# K2 J0 k1 J6 ?3 s' F! C! H0 B. y/ n0 F
ifelse(other turtles-here != nobody)[
6 D2 A3 Y/ n+ m, g* J" o% n

: H( x) e& d+ A. wset customer one-of other turtles-here
9 j5 g; w' Q* ^) e  F2 j5 x

  j8 @( |+ g* s% ^( S( m;; set [customer] of customer myself

. s1 i6 Y+ l' {9 u# `2 c
) u6 {- b1 o9 L: Y- f( I! F* gset [trade-record-one] of self item (([who] of customer) - 1)8 E; m2 [1 y# t  I7 x/ L6 a
[trade-record-all]of self
) J  n' L0 [+ i& D' [) S;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

6 K" T7 W% j# n, s4 e# F1 i. _& m3 }! B& c0 V4 d. I- s) ^3 n3 D
set [trade-record-one] of customer item (([who] of self) - 1)/ ]  s: T( B7 O. Y: K
[trade-record-all]of customer

" O* [% u+ H) E6 t, Y8 R) [
3 G1 T- k1 z8 `- H2 nset [trade-record-one-len] of self length [trade-record-one] of self

, S7 [4 @0 p/ C& N  ?1 p8 r" O$ Z% q3 O' ?8 @5 l3 k
set trade-record-current( list (timer) (random money-upper-limit))
: b" Y1 a* U. _, k1 @, Y9 D$ c
' M0 ?% z; ~  ]* Y, L8 r8 q& N
ask self [do-trust]9 I; E% }' M0 i3 t" B: ~# t- t
;;
先求ij的信任度
7 H) I+ A0 J2 Z( W( M1 H3 c7 M: x! E, P8 o% |! j) n
if ([trust-ok] of self)4 f" K1 l. r9 i5 O* [
;;
根据ij的信任度来决定是否与j进行交易[* }) v$ x# x2 V: X. G, a6 b: f
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself1 L8 w" y, P3 p

2 R  T' C" s0 l/ v. N8 B+ X[
( U: V+ g' e+ V; X

: c$ v  b. g0 s6 j3 X0 G0 Zdo-trade

3 |$ y+ V5 k+ \' }9 |- J$ X8 ?3 L+ _0 r7 h
update-credibility-ijl
4 o1 X, z" U7 j, E( ]+ S

0 R8 e, c6 c* Q7 t5 p! Jupdate-credibility-list
, w, p) L8 |+ C$ `3 v5 H
/ p/ v3 i1 y* ~. J  B! K" l0 T
* |6 b4 e: b# D8 u1 O: v
update-global-reputation-list
) N- j1 l; f- @+ U

0 J, z1 g7 K9 k6 @6 G% Qpoll-class
- S  H$ o8 ?) _4 F. q

$ S& `) [- a+ R: y2 F% `get-color
7 k, _& P( n( d5 I

$ r& t: Y. a4 K: l* v1 j) `8 B1 p]]
0 W. L- J+ M- J# B2 w
7 V: z, C7 p+ w8 S;;
如果所得的信任度满足条件,则进行交易
' ]' B4 c  |/ S8 e, |+ |. u
7 v& q. ?5 _7 {+ g8 |[
$ c, ]& I7 G% W& }+ S/ i

+ ^; J6 H8 v/ `+ S4 a  h" srt random 360

9 Q8 p& Z5 O4 U7 M4 g; C
/ X, e9 a. a8 p- ?1 Tfd 1

) j4 b: T% m9 l* S
7 m$ d. c" q5 M* u# S5 s& i]
( k8 ]  M1 j/ ?0 x

/ F, ^: q* v, ^$ X  ^! W' ^3 E' mend

( K9 B; f9 `/ d1 D4 X8 l; A
( B8 s* x; e- R0 D8 O4 Jto do-trust 5 r% ?8 C- S$ D. _, ?! o5 w
set trust-ok False
' w' g8 t- Y0 D& l
8 O4 P3 D; r; H% i" ]

1 w0 V; Q1 W/ R2 A) ]4 N; j6 Nlet max-trade-times 0
6 }- H4 p8 g' E8 ?% sforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]9 r( I; f0 {) f+ _3 E
let max-trade-money 0
' d0 M0 ?" @; I; }foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]" y2 G* _0 j6 z/ G9 g  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)). L8 k7 }+ e3 k$ J& Y, E. j

$ T" ]* i) [& I  x6 r5 `2 g, f0 {+ m

9 ^4 }/ s5 s) V  d! ]) Hget-global-proportion
' B3 l  n* l1 k$ l$ J$ B1 d+ llet trust-value. d; g# p" B1 K) T+ h2 v+ r: S
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)

0 _( W5 |: u( E. P$ E$ P) Zif(trust-value > trade-trust-value)
8 j8 Q8 Y4 v4 o7 {3 E0 C[set trust-ok true]
8 g& X5 A  J1 L, Rend1 E5 p- A) X7 d# h$ c! m; r5 H. \" |

' f2 i- t; C9 u0 Wto get-global-proportion0 `+ |5 E) _6 E' B* n0 ~- F
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
3 _$ }  c0 Z& W$ E; M[set global-proportion 0]
$ R* f& d9 ]5 Q, f1 z8 E[let i 0
+ N6 G2 c5 [1 A  N# n6 Llet sum-money 06 l& O+ K3 G, j( W. K" U% t  I
while[ i < people]
, A  A) L* L3 N7 q, \2 H[
1 l& Z" @) f$ x$ c* Dif( length (item i  v6 r8 j5 d( \* r3 ~
[trade-record-all] of customer) > 3 )
% M. S" H. l- S" J
[# a& g( E. p; D. Z4 \
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))8 Q: B: A1 O6 W8 k4 J+ O& ?* L9 `
]6 [9 `9 ]6 h' ^- w, ]
]
- b( S5 t' S1 O3 i% M2 U* N, Hlet j 0
& y# D) ^) C" J% {! u8 R6 tlet note 0
0 H. Q, i! q0 o# s" Q$ K2 mwhile[ j < people]
% P9 Y* a& c  H! h( o1 i[
/ z+ k4 X# c" k, V. sif( length (item i
. ~) ~- K4 T) x7 ]. r/ F3 }( P[trade-record-all] of customer) > 3 )

" V" b0 [/ ?! k! ~( h+ l( n[
- R' i; J& z# [ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
" W6 W& _0 C( i5 H: R) s[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]2 I0 W( w3 K  j" I7 O2 a
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
0 M( K% T, [. |, f) ]5 O]
: z; N4 ^1 r1 \5 I9 R' Z]
  j2 u% a' ]( D' X- L# Eset global-proportion note% d4 h+ N4 L) w, I# p/ F
]
$ ?9 ?; ^2 c% N* C; jend# b+ J0 Y3 s% i2 D' E$ Q8 c
5 B( s6 T/ {8 A2 z" `6 T
to do-trade1 W9 D. V- V2 ]3 f
;;
这个过程实际上是给双方作出评价的过程# j" H! v# n6 a1 b1 L. _
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价; \9 @" t+ [( B/ F
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
% L3 a; C4 E5 b& Aset trade-record-current lput(timer) trade-record-current, y5 R% D. E& H4 L2 C) F
;;
评价时间
# F, j) K- u( a( l% j  }2 vask myself [2 x" @, L: N" Y# y7 t+ z
update-local-reputation! k6 B. E) p0 r1 \! _8 b
set trade-record-current lput([local-reputation] of myself) trade-record-current
% f. C; ^- L9 O8 A( M' t]  E5 F2 ~) S5 s( }: ?) h
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
' R; U! Q- n4 x7 L) ]6 z/ j* \;;
将此次交易的记录加入到trade-record-one- O" u7 w, r% l+ o" c
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
( L/ q& I+ g1 Y. a4 x1 Olet note (item 2 trade-record-current )
% |$ k% }  B' gset trade-record-current
3 Q/ k' i' X! j(replace-item 2 trade-record-current (item 3 trade-record-current))
7 s/ x7 Z8 c& q5 u7 `$ v6 q0 Y
set trade-record-current: m, z; ^  }: F  B/ j8 l, g
(replace-item 3 trade-record-current note). B1 \8 z9 @( W6 d* y
9 `+ l' }) |" M" l
- ]( e7 s, q: E6 `
ask customer [0 ]. Z+ u  F4 y" p+ ^
update-local-reputation
, ?" L" C& Y% \set trade-record-current
  c+ t+ U. E/ q7 x) p" {(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

% S/ W  F' w3 O]5 D. o: e* s& C& @4 l+ N( R

3 }. k* e. U' s, _( |9 L

) i1 \' Z$ u5 x: ]( x$ w* y! e5 Hset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
1 z+ G: @0 g9 w  K/ o

% }9 |6 Y8 Y. d4 p+ R; |: eset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))4 w/ Z6 Z" Q2 N$ ?
;;
将此次交易的记录加入到customertrade-record-all+ K: v( P, u& l3 Y% \
end
& z- N- p" g0 o/ E8 v5 E, z& O
* e3 F2 m5 a9 e+ Xto update-local-reputation) Q; q; H* t! V" d: f
set [trade-record-one-len] of myself length [trade-record-one] of myself
* O: T6 t0 t2 s
) _# w6 n( p9 ^& a
# c3 c% @% |! v6 g4 P;;if [trade-record-one-len] of myself > 3
& k: L6 E" K0 [
update-neighbor-total
9 A8 Q# e* ^. W% Z9 p9 a, ?;;
更新邻居节点的数目,在此进行
& I: b+ b+ B) [& nlet i 39 H3 C2 `8 U4 R
let sum-time 0
" s. s* `4 o: W0 _while[i < [trade-record-one-len] of myself]* `5 T7 k" c' w0 l( ?2 F
[1 W0 Q8 U$ P& e; W6 p
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
* R! p+ }% ?0 Bset i
# `: D' v4 ]$ V6 n5 O. T0 Y$ y( i + 1)
) W+ ~& [6 c( ?/ u6 L7 ~5 G
]
' ^% U& w) ?/ Y; B( [# ]let j 3
) D. t0 B" a& c2 k! l. W! m" nlet sum-money 0
1 V& L. N" p. e( X, D: O& rwhile[j < [trade-record-one-len] of myself]
8 ^4 b7 |% |  z+ R& n+ i0 i+ B[
; G  w7 b. C" S% Wset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
3 H; s' J+ Y+ V* e% `# Cset j, j. k: K2 l& n5 e
( j + 1)

( l8 f8 P5 V: M( L* i3 [; O, z- g7 g]
4 q% V6 m* e2 k  G: z9 wlet k 3' s  g  N7 u4 ~3 c
let power 0
3 R3 u3 t9 T. x6 wlet local 0
7 t% e- L6 Y2 x8 L" v& z/ kwhile [k <[trade-record-one-len] of myself]; g3 R5 P& X  K. K- v& e& _/ d
[
  |; t( v% ]. G" W! t  Lset 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 f2 O6 t$ x3 `( J% e6 T/ A8 i: oset k (k + 1)* E6 t1 Q( F' D2 e, h
]
1 Y! L- K! A1 r* f( t- z# V; W4 ?set [local-reputation] of myself (local)
% p, M' f; [2 S7 o3 bend
$ i# _" [# F1 o- F9 X3 ?$ D9 L
4 M% S5 t2 y1 b- bto update-neighbor-total/ a0 S' G. ]. w
8 G( [6 V+ ~) l3 y9 G
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]" C: ?; G. [- e& @5 X
1 N& |' Z$ i( n

- }# _' C6 W( u( p$ c+ aend
- E: ~4 a/ D: P  }
& x# h  A) G7 h. Yto update-credibility-ijl 0 Q! y$ ]  [8 }& ?. N
: Z: [0 j# S& I4 g+ d
;;
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 C2 r! G  @- w: m: plet l 0
5 w5 ^+ u: H4 w: ^while[ l < people ]
" `% [/ N; ]: k6 R3 x. W;;
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 T: V! s, {0 J3 c  v( ]% i% y! o
[
( t) M7 @* w+ s; x# mlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)) t: [6 u- S9 f9 U0 S* p
if (trade-record-one-j-l-len > 3)9 A% `% |0 K, F( A
[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" m& u! m0 S2 A$ ?) L9 D( r
let i 31 R0 W  S  D1 i* |
let sum-time 0
! _/ f% @  y+ ~: p$ v0 Rwhile[i < trade-record-one-len]
3 x9 u1 F, U& p% k( F, e[  Z6 J6 e3 W( d( Y3 c1 u0 p
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
8 S+ I* z' ]/ ]set i
# Z: O9 Z0 h% [( i + 1)
6 [9 M9 T+ y: A* {
]
0 G* P# y, R1 K7 a) p; Glet credibility-i-j-l 0
1 a$ S9 K6 R% I1 `5 v& {! B4 j9 r4 O;;i
评价(jjl的评价)8 W* t5 R' W5 {9 ?+ {+ g# X
let j 3; P! [; R2 R' C( l: S- o
let k 4
2 ^+ E3 ?" `$ v7 i2 p( f8 Swhile[j < trade-record-one-len], R' X6 v3 |, M( n6 v
[
2 Q5 v; x! y: X; p6 U1 T* 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7 P6 R+ C6 k& Y  [' H- ~, q# b
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 e$ E: ~/ ?; P! g# E* {, C
set j
5 u  ]" \# B. m( j + 1)
0 C" f  ]3 T0 A  A
]" v  }" V8 ~4 s% y* J0 f
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 ))# M4 b2 m5 K3 r. S! T/ I( t
) Q/ j* H4 Z) a. I
0 p! h1 j" s5 o: G" a3 P
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))2 ~- }' G1 G' S7 z
;;
及时更新il的评价质量的评价
5 U2 g+ j/ ^" Zset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]5 p3 a$ U8 Q1 I/ F+ e
set l (l + 1)% E6 A; z, ?9 E5 Y1 o7 g8 P9 m
]0 d% h  O, j" A8 R# I( j
end
* f" X$ c' v+ t! c) |+ O: k9 o* ~, d5 y! G
to update-credibility-list
7 g# M8 Z. q' ^: |5 y6 zlet i 0, u5 P1 J3 N6 J: I! K' w/ G1 x- p
while[i < people]
" ?) a+ S" f( ~: a4 N[7 \7 H3 _1 }4 i' X9 |6 j. G
let j 0* {7 b: U/ a6 O! p. ]
let note 0& ]% V0 F) H0 n% \$ n
let k 0
2 J1 c/ ]2 c1 }7 R6 G;;
计作出过评价的邻居节点的数目
! A# H5 e2 _8 u$ x0 B8 Hwhile[j < people]
4 d+ j8 w/ p. H/ V  e( r+ y[
8 K0 |* d( p% b' |/ n5 Hif (item j( [credibility] of turtle (i + 1)) != -1)( R; l) k7 ?+ Q! A' P( Q# w+ ]
;;
判断是否给本turtle的评价质量做出过评价的节点9 y- ^& u  L2 {
[set note (note + item j ([credibility]of turtle (i + 1))), y4 H* a: q$ S) j
;;*(exp (-(people - 2)))/(people - 2))]

: C3 D; V$ v8 P/ F( [4 pset k (k + 1). ?9 y3 Q( z4 Z0 _# G
]
6 ^1 p9 c# x: B/ g0 Vset j (j + 1)% m0 c; p' }) `
]
0 R- C' W  m) {1 I7 B3 j- @set note (note *(exp (- (1 / k)))/ k)3 X( l1 `  {9 ]' s& C  C$ g
set credibility-list (replace-item i credibility-list note)
" E( [& L8 R- Hset i (i + 1). {) _% i2 h$ A. F8 n4 w
]6 N6 P  G  [( K) L# Q- `/ {
end
* u0 ]! D" M6 [9 R. L( }5 M5 D2 P! Y1 K; Y
to update-global-reputation-list
  Q& k7 y* }4 ?let j 06 q  `5 `" I( \$ U5 R5 T% t, i& {
while[j < people]
, g1 s# I+ P% S" K1 }5 G5 ~) [[
5 P+ X: r, r- t( d# g" E7 c' a" Blet new 04 R: `7 k/ Z1 V* S& E7 r
;;
暂存新的一个全局声誉& Y) a  i* Q1 [9 H# ?0 i) Y
let i 0) [- J- A) b4 C+ j! V
let sum-money 0
) u2 h% v3 E" }; y0 P: j$ F2 t, Elet credibility-money 05 U( d# a1 |0 n& z' [: w: b
while [i < people]: R9 Z- Y2 J5 Q# I0 s
[
: f+ `& }6 Q: g% eset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
1 b4 c" L* ~  O. P$ r# l! T+ Zset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))# k6 Z7 `3 a' V/ y1 r9 n
set i (i + 1)
5 Q$ b: f; t7 X/ C]! K; d4 F0 i+ K+ s
let k 0& u, }; i  S3 T" N! s  c( H, y
let new1 0
: A1 @- z0 w* m& O- Jwhile [k < people]1 E+ N) [8 m/ {, {% E( o
[
3 {3 _$ M) M' y' ?6 Aset 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)$ @9 z4 I8 r3 Q
set k (k + 1)6 N. E/ y3 g8 z- S0 V
]! s! t' T  S! k. w
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
8 i% F# ]1 T$ x0 h5 G2 Lset global-reputation-list (replace-item j global-reputation-list new)+ o) ]# ?+ ^4 e0 p3 x% d' b4 S
set j (j + 1)! X' u) ]1 q8 Y3 k2 s2 Z; [6 |4 t
]
6 P/ I: N' U. z$ z8 q5 e5 @end
5 e4 _5 ?# b1 ?
( M# L) f4 j2 l
. p- |! ^8 I: c& C
+ k4 j$ n( ~/ E2 X$ ?0 Ito get-color
" u3 h0 J5 T5 c6 Q! `
1 r- ^: M$ b# M  C( T' {set color blue
+ H5 ?; ]/ }% f7 A
end
0 s/ D* L- E: K, d, Z% R' |2 d2 l0 P" ^" _
to poll-class  z+ S0 [3 ~0 q; g! F6 F$ Q( a! M
end/ T9 G' G) ?7 x1 ~$ M% R

7 w2 }" h3 B. q  T5 B! l/ f( {# d; yto setup-plot1
) g$ [% M8 x) y0 c$ J  `+ ^2 ?: H" h* d* ^; N' s! y, _
set-current-plot "Trends-of-Local-reputation"

- Y5 F3 [# V: S5 T9 F: x, H/ {: R' G: @+ f$ B8 G& A
set-plot-x-range 0 xmax
, [3 @; B, |) g+ F2 J9 t! U7 U
/ ~4 A# M+ E& M' n3 t
set-plot-y-range 0.0 ymax

. D- m1 w$ D, ?/ ]5 {5 q4 Xend
# z, i) D. ?- x; V  Y9 ]: K5 B) t5 B5 @/ n# w" i( `1 f
to setup-plot2
; D: [& D! C; [  r* ]0 D
4 z) K" _4 n) f  W7 [5 j7 ?- I3 }set-current-plot "Trends-of-global-reputation"

6 G+ Y! u. o# y9 F( V; l* C, p, B
6 H: I/ B& z. J9 z4 Nset-plot-x-range 0 xmax
0 v: V. Y9 O; H' M' O

2 u3 M" y( _. F/ e+ b1 lset-plot-y-range 0.0 ymax

6 _) i: |! p2 Lend
' M- e. \( N: U* a3 _, s+ S+ }8 q) m
to setup-plot3! B2 g' i2 C) ?$ |
" m2 ?: Y( Y% x+ O9 j
set-current-plot "Trends-of-credibility"
* N! l0 n' v2 @7 @+ O- C. a1 S
. {& p4 {& \! y) {+ g. y2 c
set-plot-x-range 0 xmax
8 f- T+ `( y& ^' S$ D! v5 M
- t* U; Y9 ^8 H, j
set-plot-y-range 0.0 ymax

7 L6 F* Y8 g& S4 _, _end% r1 Q5 _. Y. q" N- i* N
& \' }8 h3 {% a2 j9 ]+ G. z
to do-plots- C) n- \+ ?$ F
set-current-plot "Trends-of-Local-reputation"
8 `: ]) K! A: d4 r# ~7 hset-current-plot-pen "Honest service"
2 |. P: `9 P; J7 ^# _end
: n8 H" [5 s+ y2 ]1 k! _& N/ r! H. |0 |
[ 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.
- v- {! S7 X, u3 }
7 p+ J: s( \  y: [: ~4 m+ n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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