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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 v6 v* N* u! q- \( }$ w
to do-business
0 O3 r* D' Z2 y$ u9 _* \; @ rt random 360
+ O2 H0 Q) U% y9 G3 C# S: K  \ fd 1
! ?$ Y1 E+ f2 N, \' E6 d2 v ifelse(other turtles-here != nobody)[6 A9 C. ^; b3 E, \* n
   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.
1 d5 B; r+ q: P" N4 R   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ! c3 e$ K1 t2 y5 P
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer+ \, g6 [; I( K6 y4 A' n- F% q- H
   set [trade-record-one-len] of self length [trade-record-one] of self
/ C4 ~* _+ \8 W9 E1 g/ M3 N   set trade-record-current( list (timer) (random money-upper-limit))9 s% g5 w4 I$ X! Q5 j# B
% \( G- o$ p( \7 I& h
问题的提示如下:
! z# F0 g! |" v! X9 o! t3 c
6 P+ a, u1 U( y, A8 f$ werror while turtle 50 running OF in procedure DO-BUSINESS
  P" ~" J" E: L8 d* z  t: o" s  called by procedure GO
+ @+ P7 q7 d. ^7 nOF expected input to be a turtle agentset or turtle but got NOBODY instead.
* S( E; }; s8 O! o$ }7 S" g
(halted running of go)
" ]7 Y3 h/ j$ @! _' G1 h3 F  X( {
4 h+ ]$ K7 i) y! @- 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~~, f% {3 _3 i' r( u
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
5 B- j( a. ^+ K3 R( V  V, E4 kglobals[& g* w. }; j* `0 B
xmax( Y1 e3 ~- Z, s0 D0 u
ymax
. r! X$ R, _/ x& O/ hglobal-reputation-list0 {0 Q7 i( w( y( \% U% I

4 _$ |9 a: m3 U9 I5 F5 E* d5 ]* z) M;;
每一个turtle的全局声誉都存在此LIST
  q& {' ?* R& V9 x9 _7 `% Z" Vcredibility-list/ ~) d+ j2 g+ {" I
;;
每一个turtle的评价可信度
$ ^, h! ]" q# o2 d1 D& Yhonest-service1 F# x4 x  b# i8 s
unhonest-service
0 @# j3 D% I" O% voscillation6 y  R& G: y: k7 o" ?$ q1 J! u( l: h
rand-dynamic
/ X6 g7 s  @9 i9 i) Y]
4 ^% h1 s6 C, L1 `! u' J
: ~. w7 }# a* o/ Yturtles-own[
! u5 l2 G8 H  g1 g" X9 \trade-record-all  Z4 @4 G. |/ X: H% D5 R! s+ K
;;a list of lists,
trade-record-one组成
0 H" W6 y5 o! ]' s' vtrade-record-one- ?4 q5 f3 p( M9 ~. L! A, `6 {  {
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
' h8 R- e+ w" x! p) ?; q9 e' t! x9 i8 J  h
;;[
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]]
) a# P# _# E0 o# F# [6 g* etrade-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]
+ h6 p2 c4 n$ J$ P0 Q9 q. M& {& C! vcredibility-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
. U7 N8 c5 L2 r* E. Nneighbor-total
) p0 [' y# ]; ?! E, [0 ?;;
记录该turtle的邻居节点的数目
4 W2 F. K* }6 D' Y, i! v# Utrade-time5 n- |" q  x: i; h2 N; y
;;
当前发生交易的turtle的交易时间! I: W, u! _1 J0 }# L
appraise-give+ }- L4 n1 `+ _) b$ Z
;;
当前发生交易时给出的评价' y" p3 ^% X8 g# I$ K% l/ j
appraise-receive
1 f' z# T+ E' z& j" z;;
当前发生交易时收到的评价
# A* p3 n1 Y% k! u( ], V" A- p& Fappraise-time. ^+ e0 p! L& c1 P6 @
;;
当前发生交易时的评价时间4 W* E  ^, b1 T' j0 @
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
$ i. q5 W5 v7 w3 x- L9 Ftrade-times-total; C1 q/ \' i  r( k# i' ~
;;
与当前turtle的交易总次数- e" [; q5 ?2 U/ W$ K) A
trade-money-total( w9 t: Y8 w" u8 g- a* X
;;
与当前turtle的交易总金额5 J  X. z7 J. B% O% U+ e
local-reputation- t( a5 ?/ N* r- a5 \  G2 Z3 U7 x
global-reputation, [. H( p& r, L8 ~! B2 {/ s% d
credibility6 M9 A( I9 Z9 C$ n5 e" e
;;
评价可信度,每次交易后都需要更新
0 n% [# Y7 c. O7 J: i/ T: i# a+ c/ W, xcredibility-all* ?; T- E6 F1 U8 m; X" Z- }
;;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
6 Z* x6 t: R3 C- E1 o$ b; n6 P* d5 q  C) c' Z6 m2 [/ |. C
;;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0.54 `6 r- y% ~" A
credibility-one
5 h" b+ i& |, ^( M; u( p;;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& D5 I; w2 u; L( _( _
global-proportion
- P/ L" z. L  R% e6 Vcustomer2 p4 }3 {& |) R$ u( G; F+ x
customer-no! k- I: N# ?2 [0 d4 t
trust-ok
  A; _. y& q8 K4 ~trade-record-one-len;;trade-record-one的长度
5 l* a# T. _% B6 O8 b]- h6 p4 a$ M. n' x9 B; V$ }3 j7 D
. A5 I  d) I6 w2 ]+ V
;;setup procedure
- Z2 {) I* W0 n/ j( i4 Y1 X& l( |7 w2 l7 G
to setup
. c* y3 ?1 j( i$ k7 ~$ c9 \* H! Z0 I% E. Y6 e# j
ca
' `6 k# Q# v6 }- F; W" i
' A/ e1 W. y! ^
initialize-settings
! j, R# k6 B5 q# }! ?# a
* d7 f. B* O3 Z7 U
crt people [setup-turtles]

& V4 [1 M# u! q- x" ~$ x! U! ~$ i0 {
reset-timer

2 S0 z/ h- m  I% n. p& E, T4 W2 ^, o
poll-class
; x! q- m  I" O  S; a6 r- O

; F" o. _+ s, G: p& Gsetup-plots

3 q; f$ {' G. s1 |) w5 B5 M2 W" v% B4 w
do-plots

5 ^8 x1 U$ c( eend: o- @' j2 {- e, l
0 ~2 C  c& O, I- E
to initialize-settings' A) X- |9 P; P. h

" R# I5 Y; n" A) U  d5 L! b. @" Y$ G! Cset global-reputation-list []

, n) q$ h* n5 [  X. i7 ]6 n0 [/ b6 a; X! J7 V, G6 L2 P" `
set credibility-list n-values people [0.5]
  Q$ J: c# U7 _4 d5 Q: X' r
4 K; R* |% n! B: j3 G5 d  [
set honest-service 0
! q! F! `4 @, l% q. t" k0 r

' f/ A9 V$ D8 C. m2 B* B8 u# cset unhonest-service 0
$ N3 y8 G4 l$ N+ d5 w# [

8 @. J' A8 q4 Kset oscillation 0

) x9 t; j3 q. V1 x: R& U
# m9 ^* L- n$ i* iset rand-dynamic 0
( W- _" z% k+ K0 |8 b. k
end+ ]$ ^6 m! ?, _

6 `! k& u5 S, P; b1 y9 `0 v" [to setup-turtles
; O0 y0 @5 c9 j9 r. h) W% [4 Y9 fset shape "person"
/ I% l1 O/ N3 Rsetxy random-xcor random-ycor8 p4 k+ {; v1 V( P3 V) p# }
set trade-record-one []' V* k* a) t5 e: @* l
5 F- j) T+ ?& ~3 D# s2 |/ m; p
set trade-record-all n-values people [(list (? + 1) 0 0)]
/ ^( b7 t+ B% r, m- q

& G: D+ z+ U% k4 {! cset trade-record-current []& O8 V% q7 b9 n
set credibility-receive []3 L3 x8 a: F% I( b
set local-reputation 0.5: A4 X" {+ L* R  U, a
set neighbor-total 0
3 h4 b" |- b' f- o8 }3 B. kset trade-times-total 0
3 q. o* A5 ~6 Sset trade-money-total 0  Q* M0 @: K3 G# C4 n
set customer nobody
# g( ?% p1 U* D4 `4 pset credibility-all n-values people [creat-credibility]0 }% P+ q3 Z: D+ W
set credibility n-values people [-1]
3 T# _' X2 K3 }; ~, x: _7 B+ wget-color
/ R  R7 G4 u' b/ z& p
6 v& m+ X8 }. j
end
8 Y" ^) p5 W) ^/ J( T2 J- i4 Z- V5 D! Z# \8 B; b) ]- [) }& o
to-report creat-credibility4 n3 V( z: s7 E% b$ |" {
report n-values people [0.5]1 U4 N( v9 R/ @# W3 J# s
end
% G- K# }2 W* c4 |" @& y. K* Z7 p5 c- p- Q8 ?: O% m& y
to setup-plots
0 J$ k; w; B( @, b" g% `5 W5 l- P9 o. g6 [3 l
set xmax 30

" J, x6 K/ h- y  m
4 }4 C. ?3 E" B. pset ymax 1.0
' m" ^* ?' }% Y
) G8 a4 W  u5 b
clear-all-plots

  b, G. |7 r& G2 i" ^7 P8 {2 M/ M4 g# e( H+ d" b
setup-plot1
/ q" I. s# W5 {+ [4 j
+ R2 G  f9 q' D
setup-plot2

& B0 A& y! j" F: N0 e7 y2 P
; C+ T$ B, `' U% _6 Ssetup-plot3
6 F8 H, f  A) ]  Y
end
3 h% G+ @9 ?1 W: m  Z1 Q
: x! J3 d: N/ g& y! v0 t  J8 b;;run time procedures
0 q+ B5 ]( }$ g3 ]9 s7 Z1 t1 J+ G0 Y: \* q
to go
( j* u9 s5 y  A$ t/ W& X$ I7 c
" B0 M# Q6 @9 O9 `5 q: d% O8 xask turtles [do-business]
9 ?* t" w9 H' {) @; n
end
- {( S1 e. ~' `5 G1 {/ I4 }2 [- _0 O* k, j
to do-business 3 Y/ f' K' r2 L( S, B

* s; _. k+ B0 q1 }& C4 V2 I
. t  j) ]* W7 Q- @rt random 360

2 Y% _7 i) o6 y3 h& L1 |
/ V4 q$ p' U  ?! Vfd 1
/ T& G0 n3 _8 d# X, K4 ^2 e
$ _+ m4 l  h% o' y/ f
ifelse(other turtles-here != nobody)[
1 Z' D3 q, E7 ?7 w8 y

- ^( Z% E. k) H0 F2 J/ ]$ t) U1 v6 @set customer one-of other turtles-here

$ Z) U" l: D# e; ^' N8 V  x" R$ T. P
;; set [customer] of customer myself
  X/ R: }/ M7 {5 u$ d( O

# {4 _1 `* O8 Fset [trade-record-one] of self item (([who] of customer) - 1)' e5 Z; j& `. e- N* ~# e( O
[trade-record-all]of self8 n+ S0 S  U% P  f  _
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
' {1 X' q/ m9 }8 i
6 S4 S# V6 I( `6 Z
set [trade-record-one] of customer item (([who] of self) - 1)# ]2 f: m0 _! w7 k3 Z! }+ K
[trade-record-all]of customer
' s% ?- m* }5 u
1 G; Z1 ^: m0 n
set [trade-record-one-len] of self length [trade-record-one] of self

; L- M* ]; F/ |; G  V" B: K
0 f+ P6 z) F3 R; f& q5 c  I- ?/ Iset trade-record-current( list (timer) (random money-upper-limit))

" b* T2 Q& Y* |8 o4 `
8 u8 Z( j; }' u) kask self [do-trust]8 s, `" x' q6 G" ?" n4 y
;;
先求ij的信任度8 D- L4 s7 E* q/ i* A

! z- g- {% P- G* n* b" Q# W7 a, P4 @if ([trust-ok] of self): |; E1 R& L- `  d) S: {4 z
;;
根据ij的信任度来决定是否与j进行交易[. ?3 f+ F% \9 r5 I( v1 V6 i1 y/ l
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
/ k5 D" A& G6 D9 ?  W% o- {
+ t7 U4 w0 S* U8 }[
( m8 `! h1 r6 D
2 |' _# w. F5 I; r+ U
do-trade

3 c% O0 w/ S& o9 y
$ I# W: B' J5 K1 G$ K1 ]/ tupdate-credibility-ijl
$ T) D; I" L! J; }* n  `( Y
6 ^" P6 x8 o& O; ~0 H4 w% R7 g7 T
update-credibility-list
* ~" M& k% I/ t* s
. n3 t/ C* {) z5 k
  c$ \0 r2 I, r& }$ h% H+ o: `
update-global-reputation-list

% D4 `$ f, j* o- R+ H
* V" F' [  {+ y/ Q% h7 p" Gpoll-class
. Y$ ^+ e8 @  u( [/ ]

5 s) G0 _0 a* c$ F! r" |3 a7 lget-color

$ C* e. M5 g$ B3 v8 `* E# y( `* n3 }4 Y: u* _8 T
]]% J4 y# s9 R) \: ]' e, ?, z
4 y* @7 K9 L  S- W7 h1 f
;;
如果所得的信任度满足条件,则进行交易  c1 s% {1 a3 k% p
6 n8 d1 H, m0 u  l9 N! s3 L
[

* G$ Q2 P. k; X2 Q# b, Q
! G) [1 W0 p% f7 M1 u$ L# }rt random 360
; K7 J9 A% J5 @1 x3 w( y6 ^7 v

6 a% r( Q; ?6 Z9 hfd 1
# _' V' P8 Z# g  U, I( _
* ^4 r0 |% j, M8 P& j) D
]

! N4 F( {6 {1 }' S& R& I) P5 C7 H9 t. R
end

0 `+ }# ]& f- V; j7 r. Z' s9 N# n% A' `9 H8 t7 Z' p
to do-trust + F1 ~2 f: c% f- A1 _) W$ t/ D
set trust-ok False( C% S$ _1 {" `
) p2 _$ ^2 F+ y

- W- |- w8 O% A( x4 {% U0 ^) C$ Zlet max-trade-times 0
( H! u+ C; W* @' R$ Iforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]8 e5 h/ _, H5 D6 W) {% T) |
let max-trade-money 05 T1 l% i& k* v7 r) u% B
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]. T$ \, l  i3 [2 T& }5 {. C
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)), l) w5 i/ u% e" I( D1 t! r) A

" q! r# K6 o! s2 |% R
  d' ]  [! l) G4 V) p
get-global-proportion
/ z* z& U% t6 H/ T& [% ?let trust-value) ^: g* j% [. P3 G: h( m- ?
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)

1 @% R$ L' {! |. ?9 m2 ~  O, iif(trust-value > trade-trust-value)! c5 Z, |* T  k5 j. v' \: H
[set trust-ok true]
' T/ W: X( b. i& E) [) Q1 fend
  V; u. y2 V8 p  m3 a5 L: S3 R$ {
( \1 a6 e' ?! X& k' W( R4 ]" V+ I- ]to get-global-proportion
. }+ M2 u) W) o3 U* w( Gifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)- o7 W- p6 N: S
[set global-proportion 0]) _$ A- _' J  P0 T6 U
[let i 0' {) V! {9 P/ ~8 a/ _( e
let sum-money 0
4 p$ X0 `8 S! Fwhile[ i < people]
/ `# ^- F1 v5 m. ~0 ][
2 h: f. r- V% ]if( length (item i3 _/ E) {; w! T
[trade-record-all] of customer) > 3 )
4 V* P4 @! m' [/ `
[
9 `5 ^" W( Q( \- [+ O: Zset sum-money (sum-money + item 2(item i [trade-record-all] of myself))" `0 _2 w  G' y" O/ y
]+ s! K; y! v8 T+ L! X$ C, k2 C" ^
]
! V- B9 `4 l- R. Qlet j 0
3 v+ ^8 t5 n7 b, \( hlet note 0# Y% b  i8 v# j0 J* \
while[ j < people]
! C' z, y( h  n9 }[. w+ H" ?, l- I; Q/ R. W. E
if( length (item i4 r! u- O9 ?* R$ _/ ?1 o& w
[trade-record-all] of customer) > 3 )
- S4 T, F. X: B: Y. R
[! b: h; v4 z" W1 p4 e. |" F4 D
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
# m* f1 O  {+ z" s" a0 V[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]1 y' E) h  {* h/ m
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]+ k5 x$ y5 u1 T& L, J' A
]
8 X/ H- z; z* n1 @# C]
7 h9 ~7 |& j0 Y" X7 F% gset global-proportion note
  y2 v* _3 J) b1 {]( Q+ @- D# G' f! J# A& P) \
end) j! J2 [. f7 t. o" D0 ?: Y5 q) v
7 M& S4 J# r5 W4 ~2 S# C
to do-trade
% e& {3 H) l5 [, Z1 g6 U;;
这个过程实际上是给双方作出评价的过程  e. x0 ?; F5 P4 P3 y- h
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价5 O' T* B: h( H( v  c9 `
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
9 E6 {8 T, f3 y: u+ A, e& E& ]set trade-record-current lput(timer) trade-record-current, o' S& {3 t( A- O* C; z
;;
评价时间* |/ S; m5 p& m  T1 ^$ o
ask myself [" O+ C, i8 Z# R
update-local-reputation
* k+ B$ ^8 g3 Xset trade-record-current lput([local-reputation] of myself) trade-record-current2 T( i. F) X1 ~+ m; N+ |- B" A$ l
], W. c# m$ S$ U
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself" W- g- t! F# S, m* L2 @2 k" f
;;
将此次交易的记录加入到trade-record-one' D; l4 |% o6 v8 o
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)" H* I+ j2 [0 p# j
let note (item 2 trade-record-current )
) `: `+ j$ M0 U# J0 u$ F/ Lset trade-record-current
6 _/ l2 R# U& ?(replace-item 2 trade-record-current (item 3 trade-record-current))
- g& r" y: h4 t9 f& r2 S# q: M& M0 b
set trade-record-current
" {" m4 S! @% E! ~(replace-item 3 trade-record-current note)" n! }2 o/ s) K0 ]

9 P4 O7 v& ?7 \( ~. c8 v( f4 \$ U

0 D% h5 i1 C: y% P( }1 Zask customer [
$ `+ }" [: J4 s+ ?9 q1 Y  j$ cupdate-local-reputation  I/ y3 Y- ~$ r0 I1 v: q: W
set trade-record-current( _. e% e* O2 F, A$ f: g% W( J
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

9 C+ V, g4 s; y8 D+ @$ S- z]
- g/ o0 a, p* C) L
1 h5 G5 w) k0 L- C3 _2 k( i  c

% i4 [  Z! T, |- q7 Z8 wset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
8 }* P! T) s" k" C3 ]
) Q8 r8 `& \4 K) G
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))6 ~6 r! S' s$ f
;;
将此次交易的记录加入到customertrade-record-all
# F( [" ?5 J  N- ^. G7 C8 jend
; b0 L# S: |. T- {3 d' @. G7 x% E. _2 p  R8 [8 u
to update-local-reputation4 W3 }* s( B5 P* P; u. P! e
set [trade-record-one-len] of myself length [trade-record-one] of myself  _$ j& Z$ p0 w! Q' W# O/ B2 o

+ N( e8 w0 d* p( `
- l7 t- j- ]9 w% ]& u1 n8 @;;if [trade-record-one-len] of myself > 3

9 ]  k& R$ }6 n0 s1 C+ U0 supdate-neighbor-total
* {" `7 ^$ R# u;;
更新邻居节点的数目,在此进行% d" z8 k: O$ s0 Q( ~
let i 3
3 T& E9 L2 D- ~! @let sum-time 0# v2 e' ?: c, ^+ x
while[i < [trade-record-one-len] of myself]; m0 o& M+ q& `) l0 s6 f
[
% @: N& }# U8 z" n; j7 mset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )' ^! r& V# c+ z2 }% D4 G
set i
! N) {$ p% b, x$ X( i + 1)
9 F5 n1 }+ H5 A/ N
]
0 [1 k2 R- J+ olet j 3; p. B4 Z* Y% @7 `, c' r
let sum-money 0
4 T) p( J  O$ [while[j < [trade-record-one-len] of myself]
$ X, U- K5 [) P: ~4 q3 s# T[
9 c3 r: u: y: }. u3 I) h5 a2 Oset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)1 X8 M$ }' b+ N0 [( b- i$ i
set j% \2 I2 _+ Q0 n: o1 r+ U0 y; h
( j + 1)

1 m1 r6 d2 |; U' A/ x% h1 b]5 \; h& s1 H1 k
let k 3
  ~, I- z- z# J" w& z' ^let power 0
+ L/ H& z( K, v8 Z/ O% A# j9 R0 Vlet local 0+ T3 n5 j( D! b
while [k <[trade-record-one-len] of myself]6 o9 A- o, l/ n) A' Y
[
( P+ S- o" V# K( P1 hset 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) ) C) X& |: l0 X! t: ]% H6 `* Z# P
set k (k + 1)
8 C' J2 U6 R' M& d: c. D. ~+ ?]
# z3 P# x  d" E  W' I; o: Vset [local-reputation] of myself (local)+ ?( @7 W0 S" \% b  |: p
end
3 m8 P2 r% @. ]# ]2 c
, x( p+ S3 r- X  k$ s% N6 Ato update-neighbor-total* F- n) N/ i8 j1 n' b
: ]! E# q% e0 o: O
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]" s/ V7 }; B5 W" R" H

- d7 c6 k/ D( A: A8 L# k

1 `3 N# Y8 x3 ^2 G3 r) Q3 {end
+ N% |! h5 F0 B; ]- x% K* ?+ W. @
6 E3 I( Y( a9 R. M) v4 G8 ito update-credibility-ijl
, u# v6 K; O3 Z' J2 I3 Z
: [& s8 i& ~, d8 b, b6 E;;
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。- T* m, ?* B, a6 R' I, K. X
let l 0% E  o" p5 {9 g* D* N. \! `3 Z' U
while[ l < people ]
4 @% Q1 ?1 s3 {" b8 {1 f/ k;;
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
8 S/ m$ j$ @6 I0 x- E0 }$ j) D; P[; A! O8 L  ]3 g% O
let trade-record-one-j-l-len length item l ([trade-record-all] of customer), M3 Y: b8 E; B
if (trade-record-one-j-l-len > 3)
! L2 l0 B9 b6 @8 N0 z! N& C! e[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-one4 N( g- i  |6 c( U+ X6 b2 `
let i 3+ y$ t  N/ D0 A  I# ?* g
let sum-time 0
: y3 ~' N7 m+ k4 v4 }, `* qwhile[i < trade-record-one-len]- t. e+ h, O- t6 n
[
3 q, v0 T9 {9 r3 l  ~4 v# Eset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
$ x7 K4 z. a7 R) n3 l! ~set i
0 a! F4 F) J5 ?% e$ X( i + 1)

8 {( r( E/ W+ T: _) P]
3 U5 t4 |* h$ p" y" Clet credibility-i-j-l 0
2 \5 T7 L8 g( ~6 \+ L! j;;i
评价(jjl的评价)
; W  [/ a9 ~* ]( z7 V4 }let j 3
8 O% O/ s4 Z) O" A7 F6 \- _let k 42 R* ^" p# z& c; f7 Q
while[j < trade-record-one-len]
! K1 d6 k- h2 h  Z& b" {- h[3 x8 i, i. E9 p5 }$ B+ v" v. c
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' }# p; V/ p# C/ Y2 [  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)
6 ^9 O' s! R: w1 B7 j, |( p0 ^set j+ X% C9 [' e( M/ d5 t; H# l4 g
( j + 1)
5 w) f+ N! g$ q9 i1 Y' Q
]
% X3 [; K. q. _9 j' Iset [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 ))7 t. s6 i- g2 w! G. C' X
1 }3 r1 [# N/ |! S. @4 ?

+ d; f. _0 n' a5 i" }let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
6 y. G, ]9 b7 y$ E5 z;;
及时更新il的评价质量的评价3 i% c; h+ V* c( {4 D% Z2 D
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
. |2 F2 w" @# H4 J2 s! Zset l (l + 1)- @- V% V. r) W
]
. K& A) Z" t9 s0 L$ f1 _: L5 g) cend
8 H: x- x1 {* ]$ \! f3 l$ @3 c% ~
1 d& ?' B; F. K) H, ~to update-credibility-list7 t8 C( ~) ?3 j2 N. ^
let i 0
8 K- J- L5 ]4 X9 `$ c) ?% }while[i < people]
8 R9 w# ~2 p; k0 y  ][
2 A2 B1 n' c, N/ _; [$ U6 z* z6 Jlet j 0
- w: L4 Y% R7 E( ?& slet note 0
8 I2 v+ \  p- q1 ?3 p- b. ]let k 0, t1 b2 }* E: Y
;;
计作出过评价的邻居节点的数目( S; Q/ h$ A) k3 P2 Y/ c
while[j < people]" a, V. U- j2 P: m' r) p& F5 c3 g
[! a) p4 c; D$ i: [" u. `; B* K
if (item j( [credibility] of turtle (i + 1)) != -1)) E3 C% V" f' u
;;
判断是否给本turtle的评价质量做出过评价的节点$ B; Y0 {1 `' d2 e( Y+ V
[set note (note + item j ([credibility]of turtle (i + 1)))" m3 t6 p( y7 b" c% T7 t  o0 ^
;;*(exp (-(people - 2)))/(people - 2))]

, P4 _3 D5 Y9 u+ g" q. Y$ ~set k (k + 1)
' d# a( C6 E! x( C! \]
$ A; D, I3 F2 V4 n* l  Fset j (j + 1)* e+ a4 g8 i6 j& x4 G+ W0 q' E, `
]
6 n) w( o* m4 o5 eset note (note *(exp (- (1 / k)))/ k)' [- ?1 H$ k9 t. H6 h
set credibility-list (replace-item i credibility-list note)) o, p: Q0 ~" N, k5 B5 B! B) t
set i (i + 1)3 K3 N9 X- d( j3 w8 W
]) B& s; z3 Z% |: u  F9 i, Q  i
end
! {% x7 Z% z& e- `. f( z/ K8 L. a# B3 S% ?
to update-global-reputation-list- f3 k' i6 K2 \# Q6 R: A7 d& {
let j 04 Y7 z+ w) Z) K+ S
while[j < people]( o# f. k7 r# g  L8 g  p+ p) h- [7 s
[$ Z8 d) P3 e# H  I! [" ?0 t& z
let new 08 H  r  {3 ]- X, h' N0 k2 ?
;;
暂存新的一个全局声誉
- D! l, X' ^$ B9 j; A& ?7 ]let i 0
1 {. t8 t' n0 A5 nlet sum-money 0
7 B$ O$ _8 Z# X! H- nlet credibility-money 0
4 N- S& |2 b; ?( ~' Rwhile [i < people]
0 n8 W) u5 T1 T, ~  M. L' S$ R0 e[
$ c" k0 K) s' \$ C4 f0 Oset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))  \8 Q, R2 E& T/ g9 m
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& a! ?3 e5 c9 e6 s/ m% Q' ?. Lset i (i + 1)/ v( {7 H6 t, T" @0 q
]
' d% I) U: D% K+ {/ M! X( K4 glet k 07 k/ Y2 W4 E+ s1 p+ [5 e
let new1 0- d$ w9 {4 v1 U9 J% B
while [k < people]5 S7 o8 p3 e/ c& A
[: |! E; C  _. C
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)& s7 A: R* P# X
set k (k + 1)9 A$ p# n" o, k5 E( b! n
]8 r  S5 F, C* p# u, v
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
: L; b- M5 Q% v) |set global-reputation-list (replace-item j global-reputation-list new)
- ~( v3 D" y; H5 r* eset j (j + 1)
! {( n! `+ x2 [8 ^" o! k]" _* n* r% r% p2 [) q
end0 ?9 m. q  o( \. f# U; M2 t/ ~9 Z
4 q0 w' \6 \9 b$ |* X

; [! M, J" ]: w) K7 W3 T. m6 z+ V6 Y7 h* c5 p6 U! @$ N
to get-color
4 M% x5 W* B7 R* R
9 t% k- ]& V1 v$ Fset color blue

4 T, _, d: @+ I1 B- S/ \end
/ x9 m5 i. {1 b  l2 Q
6 @: ^1 s/ J; ^, y6 Pto poll-class
1 w, a; c8 N+ w) W/ O% ^8 K8 Eend% a7 |- @8 s6 U( x
9 C1 q" D% v0 e9 e- p! B
to setup-plot1
% T3 V  v# S1 v3 |0 g$ m. F/ n+ U1 w0 O% n
set-current-plot "Trends-of-Local-reputation"
& ]  z9 y$ [6 ^

# r0 u* [1 A! b  q( R2 c( D6 i  @) hset-plot-x-range 0 xmax

) K$ r4 T( W# {* X: i( o7 J9 r- \- {, G; D
set-plot-y-range 0.0 ymax

' `, c% T) o& k& d! q- E6 s) wend
# ^$ P4 r# m) m( I( S8 Q7 p4 v+ R( h4 A% Y' e$ T4 z4 m  ~
to setup-plot2
# ^; z% c0 o5 E8 z& [$ `& A4 F. Q# ]+ y, I, C( R/ O: |- W
set-current-plot "Trends-of-global-reputation"

2 u  D+ q+ c# `" ^2 u2 R% C
+ J3 C4 V, ?2 X9 {set-plot-x-range 0 xmax

3 Y9 A. X; |) F! f$ w0 ?! J2 u6 e2 Q$ h% v0 N) J) z7 \
set-plot-y-range 0.0 ymax

/ e4 V5 A6 V6 Vend1 y4 m6 K  D  v2 M7 a# w1 z

+ h' p1 j9 W: d2 Nto setup-plot3
% |& _* s) s  V/ w% M! {2 S5 x+ c* v% H1 {/ j
set-current-plot "Trends-of-credibility"
0 z/ F# E) V" ?7 f/ ^2 _
9 B8 g; Z5 h) p4 g& ~% i) z% V  z$ I
set-plot-x-range 0 xmax

! G; e, a  s8 v  y: B; j! M5 v' ^, k9 G: n. e; c
set-plot-y-range 0.0 ymax
+ W, ?0 G* [0 o. `- f# i
end
9 z/ Y0 ]  A$ Z* L7 N% X2 N
0 q& u6 H0 L3 H8 }% y+ R* u& n" q. uto do-plots
! h& P" @) ?4 ^- j" s" M# kset-current-plot "Trends-of-Local-reputation"( d. ^0 v/ ^( O& N5 M5 |1 w- j* Y
set-current-plot-pen "Honest service"
+ s; i) t. b% G( R! Uend" Q/ T  x* }7 }4 N" r) b& |

6 d9 y: m' p9 V& ~[ 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.
0 O( E& v& u# X2 f7 r+ _
( r  f# i3 g) B/ c0 `( Q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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