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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:6 x) J- e4 D9 U9 N  Q* K. P
to do-business ! F! I" N& Z3 B
rt random 360
5 W' N* x& `: o0 E fd 1
% |* x2 C$ L* T% e/ ^ ifelse(other turtles-here != nobody)[  k: I8 t8 P1 G9 @) ]7 ~4 K+ 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.
, G  n  _, }7 e5 W- P   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
2 t1 ]( }. c8 }   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 {0 z( O& l2 z
   set [trade-record-one-len] of self length [trade-record-one] of self
1 N* t9 `( i# |- N/ m4 C, v: o) W   set trade-record-current( list (timer) (random money-upper-limit))
/ X3 g/ w  R8 p( Z% [# a/ s
! w. }8 [" E4 j1 G问题的提示如下:' u0 _2 H  }6 x% k3 r

8 [% u+ |8 B/ b9 P& g& ]error while turtle 50 running OF in procedure DO-BUSINESS
. E" {6 f, U. w  called by procedure GO( k, M0 u' |+ Y/ ^
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
9 N4 R6 G' V* Q+ R9 D; P% h
(halted running of go)2 Q4 F7 @+ @5 r3 d

) m- n4 f4 M, L% |& j: j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~~2 {$ g7 v% y9 G0 \9 v6 G
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
4 h) L7 @* F& `) r9 d; \% _8 Hglobals[& ^2 z0 w' ?3 g6 R% g' Y! l
xmax
9 @: [' A% F( w- ^& \% Y% F3 J( s7 aymax
, T. v- c( q9 [; o1 |& Lglobal-reputation-list- A+ f! _8 n( ?2 U3 S; ?: L
7 X0 L! }1 a; O9 k) L' k
;;
每一个turtle的全局声誉都存在此LIST# Y6 a- ?7 W! Z5 U
credibility-list0 d0 J% o4 H4 t4 k' V; b
;;
每一个turtle的评价可信度
. q' P6 V/ B/ F. f' s, A- Ehonest-service
. L+ I! G' H4 D/ Q" \unhonest-service
' A9 r' @; m4 r4 Ooscillation
5 m3 G/ ^2 [/ K1 e# n2 Trand-dynamic
* {) h$ a3 M% B) ~# G]6 E# x3 M! F! }3 o, Z0 R- F3 S

8 U9 r2 b7 A  k6 {* Iturtles-own[
4 D( }0 {, ~. gtrade-record-all5 h. r* a% m+ ?: t
;;a list of lists,
trade-record-one组成3 q3 o/ m2 F, \  ^$ M- ~" A6 S
trade-record-one
$ _1 v' W8 W8 d9 |( g! J;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
! q5 L: Q0 i+ M0 l3 }& n1 ?; c( s! y
;;[
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 f+ k  |: `0 _* @; atrade-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]5 y6 }9 x- y+ d/ S, V; Z" @* j2 m1 `
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
- b% V+ b+ g9 L3 Y& ]- wneighbor-total; z) E: N8 B6 g9 h6 V6 f5 I, H: j
;;
记录该turtle的邻居节点的数目) S1 b8 Q& ~* ~1 `( V
trade-time1 Z. l: B- l. W  K! y' ?
;;
当前发生交易的turtle的交易时间
; L$ k* T- L% B4 ^2 I8 n8 M7 ?. Tappraise-give
% o# A( S% r2 O! o;;
当前发生交易时给出的评价" A$ E  P  U4 L. O% x8 `
appraise-receive% H8 r& X. Z+ B5 U# T, _
;;
当前发生交易时收到的评价- w+ e6 }9 \/ n
appraise-time
7 @: D, e$ ?! e) [4 ^5 _;;
当前发生交易时的评价时间
4 F) w/ v& L4 Slocal-reputation-now;;此次交易后相对于对方turtle的局部声誉8 I- Q; k+ F' z; x# h3 V7 i6 p. V
trade-times-total
: L+ G4 H/ G- R; v' _) e( ^. C;;
与当前turtle的交易总次数$ ~3 h8 H8 s! u. t9 ^) j' s
trade-money-total% H( L$ \' J+ O1 N- ?5 ?: d
;;
与当前turtle的交易总金额
- @# J( h+ f  n- z" T/ B- Olocal-reputation, r/ U7 B! S( T3 s
global-reputation6 f- {& D3 x! A
credibility9 E1 f& Y0 G1 E' r* X$ G5 b
;;
评价可信度,每次交易后都需要更新4 b2 Y7 V9 v4 N# V1 C! U) u
credibility-all
$ ^- s! W, \2 E$ V;;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. d8 S" a3 ^9 K$ {- Y6 |' m

+ u0 C( D  `" J. r+ G9 C8 i;;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0.59 q2 ^) t% W# f% g% a6 M$ t
credibility-one
! @# V! Q! y! x, e- x' p1 P) I, e;;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, T2 {9 m' H6 S
global-proportion
0 i& S; W/ q5 P9 i5 Q0 r- Scustomer) m' t, X6 K7 }( q$ ^
customer-no7 w9 n7 a9 v/ P( L+ x
trust-ok
* ~$ |7 V, Y) q5 L  strade-record-one-len;;trade-record-one的长度. f3 d. ?3 h6 I" l# P4 Z
]; f& p; y( U$ Y% r

: @9 k- P' S2 j;;setup procedure
% [/ B  M" e( B2 S( Y# V6 o- v9 r6 u
  l; B" C, o3 Uto setup
: L2 L% C/ [3 g/ s6 @2 M0 J
7 H; m* q; v" n8 j" _ca

- ]' c, {# O1 n$ Z$ C6 n+ {& S/ d  U/ F" N* J1 O! O
initialize-settings
0 }' ^; p3 X) e" }$ d9 ~6 O
7 z+ n4 K# l$ l0 M
crt people [setup-turtles]

, @: L/ ]1 u! `! G( h0 l$ B) a4 P: d2 L
reset-timer

4 K7 Q" J5 H- k3 ?! v
4 n$ G2 C$ B( g/ Npoll-class

" |! H/ R3 p+ R
2 \0 _- R- p% O* A6 Nsetup-plots

: e+ {. i! K! I/ D4 x. O- ?9 x' ~
do-plots

# e  W5 g2 Z6 n, `end- x: ?3 N2 t& Q$ K
: B8 c7 z+ z4 }  r- x5 h) q; j* P
to initialize-settings* D+ m5 n% b" p$ ^2 J( I( a: @# M
: C* y% P$ x. N  I" m6 v
set global-reputation-list []
" k* ^+ K+ j( i  ~9 i& {( |6 U
! N9 v2 Z( y7 P( b; |
set credibility-list n-values people [0.5]

6 [9 T# R- f- m8 o; J
1 |- `* g$ _" W! kset honest-service 0
  R) ~; u( j2 N9 E; Q

" b" T1 D1 V* c9 s$ F2 p8 zset unhonest-service 0
) m) [8 `" Q: ]

" S7 B6 {$ r" G8 Cset oscillation 0
. ?7 C" h- ?% H/ l

; ]* C  _" |6 A- ^set rand-dynamic 0
5 \4 t8 ~6 c! L1 i
end" D" X* l: c) V1 B2 ^- _6 u7 U
( i5 L: w( B9 D6 \% J
to setup-turtles 2 Q2 F" s+ E" G  W, r. B1 x# p
set shape "person"
) O. H, F0 f+ V: Csetxy random-xcor random-ycor4 i) C; G. E% }! g: [! n
set trade-record-one []$ ?0 S. M; s0 @+ h6 m
8 S. `( E. S- ~+ z
set trade-record-all n-values people [(list (? + 1) 0 0)]
5 T' [2 m2 C& }
4 G6 Z: R7 ~3 _5 ?5 F( ~
set trade-record-current []+ I, [) a) U! r- |( H9 C
set credibility-receive [], H! ^+ t) V: }; |  r" t
set local-reputation 0.5
& l' p- Z& u6 ~% S3 Sset neighbor-total 0" l9 l, n4 G  _/ h+ H% c
set trade-times-total 0
5 z/ ?7 Z8 |4 X' s9 hset trade-money-total 0
% W  i$ i3 w$ y9 I4 mset customer nobody
5 Q) t/ w; W0 J  Hset credibility-all n-values people [creat-credibility]; r3 X* V' E  W. _5 h
set credibility n-values people [-1]
9 _- }. P2 l' A) n! Jget-color
6 X+ T, y+ R3 B8 L
# n6 m6 _& C$ s2 O- k1 {
end
! j  Y9 I0 v- x3 g& M: t% @7 B; h# i1 X' f9 i
to-report creat-credibility0 d) E* @# ^2 x& v
report n-values people [0.5]
& [- M6 i8 d+ kend$ G# |! q8 T) Y$ b5 J

: J4 B; [5 |/ ^to setup-plots
& e: E2 V6 B# g2 \" q# E/ @0 b' M, ]) {/ @/ ~$ z: M9 ^+ l
set xmax 30

" ^! d: G& l! k/ c+ [1 X7 y6 A. w
* y* ]0 v8 I7 V' Y0 m; yset ymax 1.0

0 o- o& h( P% I3 M0 D3 ^% j8 U$ O) J& N4 G7 p5 c9 F% v
clear-all-plots

6 M  z; J, E5 |( }4 b
& _( k! `  K2 y9 p# {3 v; O8 dsetup-plot1
# `+ v# o. Z5 b9 d* j4 T( G6 i( S' z$ v6 x
+ j) J* P+ R( ]1 ^9 G- i4 ^
setup-plot2

5 N7 H. }) R; K  R2 `, J) L8 N4 j5 D% L9 g) {9 c- _
setup-plot3
% C6 r. e3 T) n1 _! L) _6 G/ b$ j
end
/ b# g0 m4 j+ S8 \. b
( C4 [7 ]' o+ s) t7 F;;run time procedures
" Y7 b% V) h4 q* g4 E1 T
! F% m  d) l$ K$ ~to go
! y( ?6 y0 [: ~
, g" m; x* _) q% Dask turtles [do-business]

8 r8 j3 b/ ^! R$ ?$ K# |1 W3 V3 V4 oend2 z/ e0 A7 A7 w/ `6 u! |- S

# ]% c2 \$ Q0 P/ \6 ~5 c1 F5 V6 Tto do-business
6 I  H7 ]% e* }. q4 M2 a
- f! w$ z- z' R/ i2 X* a7 O8 m
! F0 V$ {( m% ^; X& }7 ~5 B
rt random 360

, u+ {7 V) T( Q% }# M/ K+ s
$ A" Q8 J& j& N8 h2 g4 Nfd 1
* v2 g4 q4 d; T3 u* l

- J/ d/ [6 M# c+ [- X" P' ~ifelse(other turtles-here != nobody)[

+ I+ W+ i7 L: @9 x) O
; P( G. M4 i4 ~: V# N7 tset customer one-of other turtles-here

6 T8 V  y" K- c/ ~5 h" w
$ `$ O5 d; y* H# y# G8 }$ K;; set [customer] of customer myself

5 Y# c7 y2 W/ U6 b+ N4 R, E. x" N0 y( j- W$ P1 n) V
set [trade-record-one] of self item (([who] of customer) - 1)& G$ F6 z2 X' q, e' t. O
[trade-record-all]of self
" ~4 s. c+ A1 X- N;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

9 y: q  B* Q5 ]- z0 t, X5 B9 W" y# \$ D
set [trade-record-one] of customer item (([who] of self) - 1)3 k; J. c6 h! E( W* P  U8 K
[trade-record-all]of customer

" v; I. v( I' I/ r3 i# E9 F" s3 g/ J# ^% l$ z+ N2 H
set [trade-record-one-len] of self length [trade-record-one] of self
3 N' L- R: g8 |1 V; N: I6 i
" r5 w& ~; {# x& N8 ], C5 [# D) G
set trade-record-current( list (timer) (random money-upper-limit))
/ @$ Q  [' Q' x" e1 @* `. s! g8 q

- v/ o" b# Q# p; Xask self [do-trust]
  h2 @# _0 \- s/ O7 h" A5 z;;
先求ij的信任度
3 j( f3 v% ^8 E0 X5 N
! O$ v7 d1 o7 p/ B) o( I7 R6 ]! s+ F6 sif ([trust-ok] of self)8 ^8 J  R, @3 c5 a
;;
根据ij的信任度来决定是否与j进行交易[
6 L4 e/ ]6 C) S$ I( Y& iask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
& m/ I  `. v; D0 l" o, z
0 S! `' C! \  h: I) J% r[

* T- l0 y) q( f3 S  H+ R% B
- y; D. V" `( v$ z/ O  s7 |do-trade
+ g. \. {7 U! l5 a; e" |
0 y! J/ Q; I4 v  ?$ L( E& t
update-credibility-ijl
( N7 Q: S, n( F7 h
6 }: \& C- U5 W" `( b
update-credibility-list2 |- t9 J* ]* Y

; R- B; d$ r% G1 i, q) j7 `- Q: Q& p4 e1 E
update-global-reputation-list
0 d- ~4 a  N& X7 j$ X

+ F# `2 P, D7 U% p" [: gpoll-class

* i3 ?6 B" Q/ [" E+ ]5 r0 v/ w' y: P1 m) H
get-color
7 y: J( y+ u- G

$ v. b4 S& V4 `* V3 H]]' N6 X; A* h& s# f8 {0 V

' L+ K# }4 V8 k;;
如果所得的信任度满足条件,则进行交易
  S. y* D: \+ ^# P$ L( M5 v! ^, X1 s5 F5 Z2 Z; D
[

& |- f5 T% N& I' o/ u( t/ R0 ^
. A, z0 ~$ X- U' }rt random 360

) ?5 w2 C4 H+ B# Y6 f
* ~' ^6 e7 M5 y- D6 [fd 1

# K& @  t2 ~- A0 t+ P
# j2 C9 H, i0 z7 t. `7 a]

! t0 Q' _0 |* p1 @2 I6 t! R- x  ^* L: {# R
end

2 R% R7 \6 l$ A% J/ g; @; }. N
( j: n# _0 W( H8 Y) N4 [to do-trust $ \4 v8 F# r+ w
set trust-ok False
5 i: d) r. ?# d% D8 l! o
( e* j+ f/ e+ j2 r+ }0 w7 W
  l( J* w3 L( G( X) S
let max-trade-times 0
- h7 S' m, \& ]; S+ Bforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]  g7 {5 \5 k+ f1 P/ b7 u1 h
let max-trade-money 0
4 r* F8 \* k9 ~8 t0 M) Cforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
. j* A7 O  d  x" {- Hlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
$ `( A1 O, D" r+ ]( J; x' V' y2 u; Q& ]1 T% {

6 O+ B  F2 [& Sget-global-proportion: w  R( G* F% m' ?4 x8 f+ F
let trust-value7 K+ H9 D5 r6 v; Q, G( L
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)

7 ]+ B# `& ]+ C, Q3 o& u# {  }, _( Xif(trust-value > trade-trust-value)% H$ l# c! s$ P' m, }( @% R6 R
[set trust-ok true]0 L0 @' F5 u, h( L3 q
end
. z: r8 d" d6 K- _9 |% k2 A. }+ T" L% g# h, |" Q
to get-global-proportion
% i, R% B; f0 j1 x( Aifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3): A/ U9 |2 g9 v* h% u
[set global-proportion 0]7 z; J$ |1 x  `0 l3 `, h$ g' B
[let i 0
8 Z5 E- N7 Q" j1 |let sum-money 0& |+ O! o1 v0 C8 |! w
while[ i < people]
% M# l& K* d0 p0 c% z; ]' O! t3 ?8 p[
) A, ]' q8 N7 a. U5 X8 j% k& Yif( length (item i
9 }7 q: @: s7 n" ?2 W4 h0 z# i, \8 ^[trade-record-all] of customer) > 3 )
6 j% @1 y( ]* L) I& o$ X+ J& ^
[
, h( y1 n" F  oset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
6 |  L$ I, p( o" Q6 A: l]
( k. F* j5 B/ @5 h. j/ v6 V]
9 p% o; d0 U  R4 ~; Y$ Z( Plet j 02 D0 O+ Q, q: I) w, h  U7 F
let note 09 E' q9 c+ w2 G- s8 {9 O$ }
while[ j < people]
/ B1 j! I5 I3 i$ ]; G+ e3 P! Q[( W* z* O; [+ q& [& e. r% p, T
if( length (item i! a: q& f) h- Z  u9 h
[trade-record-all] of customer) > 3 )
& v# K% A, B- V* n
[
" }" F1 w  \3 i7 n, |+ S- Uifelse(item ([who]of myself - 1) [credibility] of turtle j != -1), ]2 n- _+ G) Q, A$ F  C5 `9 d
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
+ j0 G; k) L9 c  ?3 E+ o[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
8 U1 i; G* }# G  G( F% f]* ]8 d4 E# i3 B- r' S6 s) j
]- C( F+ T% D$ z9 @! _1 g8 s
set global-proportion note( V2 s( M- d6 Y$ p
]& P* z0 i0 t1 ]
end) k1 r5 U/ {) c) l
1 p/ \& N: \  c# O8 o$ G1 u
to do-trade
' o8 T) T+ `, D: z9 l;;
这个过程实际上是给双方作出评价的过程+ w7 |' |9 K  d! m$ y4 e/ D
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价6 O/ a) R- X, Z4 ]6 z3 |
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价( z& Z4 M+ e9 {# _& e0 @# }) W
set trade-record-current lput(timer) trade-record-current
, S. z8 P* i) D# O. \& W+ {;;
评价时间
9 g* L+ |. M2 F: x8 Rask myself [& o& j, l2 ?1 g2 V% _* I! i' \+ A. L
update-local-reputation4 ?3 a5 \# s, G1 E/ u, R
set trade-record-current lput([local-reputation] of myself) trade-record-current2 B8 z5 g4 U8 q) T' {
]
; T4 s1 `+ _6 _& m1 v/ cset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
4 v2 f1 ^0 \/ ~$ \3 N; C;;
将此次交易的记录加入到trade-record-one7 h) m3 l" p" s8 S$ y6 n5 i# i
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
% P( n8 k( d1 D9 o2 v/ _let note (item 2 trade-record-current )7 y+ p8 n/ v1 |3 e& c
set trade-record-current) _7 M3 ]+ v/ x5 e
(replace-item 2 trade-record-current (item 3 trade-record-current))

8 p* ]' n" }+ j2 O8 Q0 hset trade-record-current
. \/ v9 h7 q1 l(replace-item 3 trade-record-current note)# x6 X5 q" l0 s' a

+ u- e. J, h+ a6 y

0 I# G* W6 U) Y1 c( o# Cask customer [, a( a# R6 u+ W: h4 B$ i4 _6 U
update-local-reputation
/ d8 B2 m: Y# u( d4 M5 Aset trade-record-current. x) i* N: d, w% _8 S
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
# n  l# z& L& @; N/ e% a
]
% e+ H- [# H0 _. l. x
) P2 I% w3 ?. C1 y
4 r& \; g9 |: J4 [, h$ k& r5 K8 n
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
; ^2 m( w1 r0 ^0 s
6 X3 t# h' D0 w, S
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))5 f7 c# X3 X8 N0 w) e
;;
将此次交易的记录加入到customertrade-record-all
1 u& ~6 j" Y. z% W- u& Send$ d0 U: Y! n5 G
/ j0 k! Q" l( ?" x, N& t0 M$ Y
to update-local-reputation' o" l1 s, ^2 h* @8 Q$ X
set [trade-record-one-len] of myself length [trade-record-one] of myself/ h/ m# V8 C% V0 j2 P

7 Y! ~3 p$ P* _! _& Z8 l. q/ p4 y& w$ Y4 V1 L5 Q5 S, n3 J
;;if [trade-record-one-len] of myself > 3
: o# o0 U4 X/ J* [0 w5 ^6 q
update-neighbor-total
3 l% N  t  f3 h% Y: C;;
更新邻居节点的数目,在此进行
; `# d8 `$ A6 ~, |# `8 Jlet i 3. L. ^2 x; ]* U, D0 Z' c
let sum-time 0, ^) ]7 v7 C! Q. b% L( B4 C
while[i < [trade-record-one-len] of myself]2 J7 x% m; ]- H+ C6 D& S, X5 e
[
3 M6 `8 w$ F8 h9 t9 m3 e, F& Vset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )1 p! q* S- H# N+ G2 H; Y" M
set i
) F4 X5 q$ T. H" n% E; i9 a: e( i + 1)

7 ^0 P, i6 z& ]) |; I! U]
' ^" ]6 w2 R) p' tlet j 3
' \( q% ~3 J! ylet sum-money 0
$ J$ v8 q, i% S7 L& owhile[j < [trade-record-one-len] of myself]+ t$ q9 M* q  U
[
' C4 `1 @, r$ `" o; o- N7 Zset 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 G; c; N) ^# s$ q  Sset j
$ V0 }8 N4 U3 d0 q$ K; o! _( j + 1)

, p, G8 `) |4 n: ~7 v8 `) _]  Q/ K9 b6 x: \4 r
let k 3. H& P$ w. d/ Q9 f8 ?
let power 0
, ^3 t8 f4 r( ]* w/ C7 E- H- o: Q  Dlet local 09 {; [9 t& `: K8 `8 I. D( q1 l# q
while [k <[trade-record-one-len] of myself]- d4 |8 m% |5 [' L
[% O% n' l! K. d& l
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)
. M' |$ ^# U2 Wset k (k + 1)
4 ?: m( U* `5 A1 P], m8 B$ s, s+ |) H% P0 N0 j
set [local-reputation] of myself (local)( Y# [- L: u! N% w/ h' E! h
end
# K$ y& _' G# y$ N1 }% M- v
9 [/ x( B- a" Y. x* ato update-neighbor-total% T$ V* V! P) e' U  H: U4 w( z

9 S+ \7 l0 g, yif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
( v4 a5 q8 i- m% {, b
* ]% O0 ]; y' i
" z4 @  p' n8 e- Z2 d
end
8 {& U8 _" q) H5 }" M' v8 }: c2 o, \7 `* a" E
to update-credibility-ijl
$ n! I2 `; x) Y0 Q( i+ ^  _9 P- w# A: y2 y
;;
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。
+ i) n- }% V1 r* y( Qlet l 03 H- w" u. r% ]6 h# S) d" \
while[ l < people ]
( y( @. a8 v0 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
; m7 I. M$ O: N* P7 s" I- x[
8 U$ J- e6 f' I! @let trade-record-one-j-l-len length item l ([trade-record-all] of customer)' w. C* R% u; u, ]2 ^( ~
if (trade-record-one-j-l-len > 3)
' E& Z0 I% h' T. v! O0 `3 I[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/ T" b9 T5 n2 T. F1 o4 m& v
let i 34 e; l2 G6 r9 ], F8 U
let sum-time 0# k' ?% U: t# i
while[i < trade-record-one-len]) |! U# Q4 P+ \& Y8 z. ^! F% ^1 O
[0 t2 q  o, W; M2 ^! s
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
, \0 O. Y+ M1 C7 H8 Sset i
8 K) @0 y; U; s9 P, W( i + 1)

7 E) e& h" |+ P! ]% E: z]
# k/ c) h1 y/ y; w7 n+ ]1 B3 a' slet credibility-i-j-l 01 [4 B  ]4 g) J, F& ?2 g
;;i
评价(jjl的评价); O& a2 P8 n# `* R  f& O" L
let j 3
5 D; o/ R3 o8 Y7 ^3 ?let k 4  B. ?. j) @/ V/ r. U+ w( @
while[j < trade-record-one-len]! K; V; n# r) Z) a# y. C2 \' ~3 w
[
" U* `2 H  n  F  }# G# hwhile [((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
# P) k0 Z, @/ B% v' d3 Sset 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)/ `7 |' x0 ~* g  X
set j
; P: [& h% i/ Q% f( j + 1)
1 P! [/ z) L5 \- g" k! O- g8 V/ v
]3 N' r8 Y$ r2 f$ U& _  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 )): b& h/ V+ h' F& b5 V1 V+ s
8 g6 Y' J+ A  V
- B; _- ^7 O( f7 l
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
& d) E, r. v2 r;;
及时更新il的评价质量的评价  x) j: c+ x( T* C) H2 @
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]8 k- M$ W9 C* d. K. l1 `
set l (l + 1)
2 z. q  ?/ Z: w$ U]5 x! f( W5 r+ g5 N$ k' M1 H: f" h
end
: k' n' W" p' Z
5 h- Z9 V/ D& F3 ito update-credibility-list$ u' v# u+ z: L
let i 06 E% F! p5 s8 N! Y7 V! _, T8 j
while[i < people]2 W) I+ W! V" F6 R5 |5 m# U
[* Q& U5 @. r( S1 l0 |2 i' I/ {
let j 00 p0 g9 d  u$ J) g) R0 ^
let note 0
5 o$ J; i4 s/ l9 elet k 0( v  U  g4 M4 K2 ?  f- @
;;
计作出过评价的邻居节点的数目
9 C9 x2 A5 Z, I' Nwhile[j < people]
$ y  ~  k5 k) j' W! M) g[
$ J1 F9 j' K- x; X* Z6 Vif (item j( [credibility] of turtle (i + 1)) != -1)8 c! `9 \! k* N0 M3 V/ R0 ~' I
;;
判断是否给本turtle的评价质量做出过评价的节点) h2 x. T( g* z( f
[set note (note + item j ([credibility]of turtle (i + 1)))9 R/ ^& P- F( Q0 Q8 z# v
;;*(exp (-(people - 2)))/(people - 2))]
2 _" Q! J7 C* b8 r4 b. k
set k (k + 1)
& P1 a6 i( `8 A' ?& d  t]6 J& n2 f0 z7 B8 b8 k5 s8 a
set j (j + 1)" Z, [3 }1 y9 d) g! V
]+ \( b0 [( V/ ?# d  ]
set note (note *(exp (- (1 / k)))/ k)
% t1 O+ s- y1 I. R- ?; Eset credibility-list (replace-item i credibility-list note)
* s' z3 X5 G4 h+ F6 M$ Zset i (i + 1)0 J1 z; z3 W$ q" B: H  e
]
* m  o# [1 i# f, D# s( uend
3 g9 Y  L1 c$ R: L4 y9 [6 z
5 J* ]7 P" `# d# U2 |: b& Mto update-global-reputation-list0 Z4 E. }. e; F" K: t
let j 0
* u9 C  w6 T( ^while[j < people]
5 C; m- c/ }' a  u# J  I: @. h+ O) |[: U9 O8 r7 [3 k4 p
let new 0, g  [' P7 X# [" C, B: o
;;
暂存新的一个全局声誉7 z  _% t5 @0 d/ w. L; r
let i 0
5 P( T1 [! u2 ]2 K0 Jlet sum-money 00 i. Z' F# @# u8 O
let credibility-money 0" u1 r8 h+ l  T% w  \# G
while [i < people]* G2 h/ }" z! B
[
$ X7 h# ?8 i* u* {. z/ h7 t6 R* Yset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))" W" h6 t( M  t7 s- H& p4 g& T
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))7 C: ?' ^" O3 X- P% c6 p/ _/ p
set i (i + 1)% P; w0 B( |+ M  x: Q1 _& O
]8 e; C7 {; {  r9 Y
let k 0
& X9 h; [( o- s; y$ llet new1 02 L* t. v& Y# k2 L) G8 ^  b
while [k < people]5 [* t' Q# Q. }1 B. |1 Y8 ]. K
[
6 |- A% g7 @- C, L, |9 ^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)
" y  K& ]3 }: R% m& A/ p/ o1 O( Rset k (k + 1)
4 \, t" s( C4 I3 Z7 _/ w& ?5 W: g( k], w* B" m5 `5 T8 E
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) + l( N1 F& n# ]- b- x
set global-reputation-list (replace-item j global-reputation-list new); Y# }& A3 f$ d
set j (j + 1)2 D4 w# X0 s; C  R. o: E1 e
]9 c0 R- r4 R9 d; i& ^5 U9 |& j5 y( ?
end
7 M- n2 F9 r) P( M7 J7 l; |1 L% D# i3 I) @9 u! P+ x& P( U- _

( p2 ?4 q' x- |, s2 X5 a5 e* o) L7 b  {2 o
to get-color$ S2 B8 f+ }- g. Y& w) x. V

# R/ x1 {- e! f7 V! Hset color blue

! ~1 g% m9 J8 A$ U0 P6 Gend- H1 [( H7 m* v. C

7 x9 |% w, x( h- R! |to poll-class
/ R* |* Q: r& r: h8 ~end
# r; h. \0 Q. @/ `6 I+ D) y( p# x
, ~* T7 y4 Y. A0 R$ [to setup-plot1
3 Z3 @5 A, T$ }7 ^* f( `7 V
5 \" |3 w5 C: k) i5 X6 D$ pset-current-plot "Trends-of-Local-reputation"
  i& ]) T1 n: H6 ]7 h

( W0 S" @/ ?7 D7 n" }set-plot-x-range 0 xmax

, U3 f( ~5 E; ]& Y( W* [* O  Z  |1 r+ i' k1 }
set-plot-y-range 0.0 ymax

' L6 F. Y# R  Q$ J0 {1 xend
7 X7 Z' E0 T# L6 ?. T7 }. V$ c  ?! C8 x6 \0 ^& k) T1 s
to setup-plot2
  d3 _. N& |$ T5 C/ r- r+ H4 r0 N5 k1 k( F# w# [' l
set-current-plot "Trends-of-global-reputation"

: r) r" C$ y: L- ?) H1 F4 J) g- a# t% V/ v# x/ z, z0 e
set-plot-x-range 0 xmax
* J: s, E( z6 Q8 G1 K# w! A

/ j& [5 F- Q7 ]4 Fset-plot-y-range 0.0 ymax

0 C* x4 \$ g1 _8 u* e4 P4 ?end) p  A) G" I( ~/ I9 K$ A1 E

9 N0 |+ _, |/ u+ ^0 n" bto setup-plot3) R. E% H  A% O; e8 x

6 u. C: O3 J# w% J: [0 yset-current-plot "Trends-of-credibility"

! h" Z: Q) N& Y9 _- y5 f; V& c& v) Y- F. w$ c6 k2 c
set-plot-x-range 0 xmax
8 J! z" V. V) [2 K! P5 x0 ]2 ^" b
+ l7 w  h  Y7 C8 m  ]; j
set-plot-y-range 0.0 ymax

8 f* E( N" i/ ~/ z  send
; i( e" F/ b  ~. H9 A5 P' I4 @$ t
3 O1 }0 W, j% _( `to do-plots
* H$ V: o# ]9 wset-current-plot "Trends-of-Local-reputation"+ g- w+ S2 |# Y" U
set-current-plot-pen "Honest service"! l6 D& [; z. h& m2 D
end
* \( u6 Q! e" m7 @# x- j) Y4 X6 m
[ 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.& O, q) v4 [# H

: y9 p! L% O0 L1 N) F( v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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