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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:
: b. q$ {- a+ c5 }6 c6 g% ~) sto do-business 7 C( ~& ~$ t3 R. R
rt random 3604 l& l. L4 K: X# s" M: H% e
fd 1
. l- U3 {; b4 o4 }6 t5 `5 c$ N ifelse(other turtles-here != nobody)[
; \( i: \( V+ U+ 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.( x" A1 ^* g# K8 a" q- y4 d8 R
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    . H+ h* l% o: J$ r9 X4 D
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
: x# h2 U! o: @, m& i/ N   set [trade-record-one-len] of self length [trade-record-one] of self/ K7 _- w8 c. E5 d, h
   set trade-record-current( list (timer) (random money-upper-limit))2 W2 ^& W$ V6 V7 x$ n0 ^
" B+ Q' E3 Y$ X+ M
问题的提示如下:
" g$ j& Z/ R5 c: X! i1 H; x% B$ g6 A/ N$ y  t5 P- E
error while turtle 50 running OF in procedure DO-BUSINESS, l+ D5 E; {/ O- r5 ]
  called by procedure GO
$ d7 E1 A4 i# {7 f3 c( pOF expected input to be a turtle agentset or turtle but got NOBODY instead.% T( C; V& G! ^( G  d. C# _8 |
(halted running of go)
2 B  f: K( \7 |. W) W- b! [8 E; D: ~9 R+ t6 `1 T
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~~
. N3 X. F" q) n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$ J* |5 J% `/ |% a) E% T
globals[3 O) V: M7 p7 H0 Z
xmax2 E8 j4 k& j9 @2 @
ymax! f% |* i+ y' \8 T# J6 h
global-reputation-list
) C5 N6 P/ Q* X' W1 i9 |- i. T2 _% f  Q% r
;;
每一个turtle的全局声誉都存在此LIST/ J+ ]1 y. Y9 P
credibility-list, m* h4 Q, ~. C1 \, Z
;;
每一个turtle的评价可信度8 m+ Q0 H) ~3 J5 _( Y3 a  E/ V" i
honest-service; E5 {5 f/ W- c( v- t9 W
unhonest-service* f/ B1 x# V/ r! \" T, S9 t9 `
oscillation) \6 }- {: B& n: S  }6 t
rand-dynamic
, _$ r) X9 _5 `! b4 P]
4 _# ^( \# T+ v
$ i% X7 p$ j# F3 a0 [9 wturtles-own[
5 B6 S& n! v& a: q9 k* O8 ]trade-record-all4 v9 V! l/ r: m* m$ V( q
;;a list of lists,
trade-record-one组成* H. h8 p! l7 Z. {5 c2 V
trade-record-one* @3 W9 u7 x. e# C  W7 v9 K' x
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录  S/ `( Y" f$ x9 t' |+ ~/ ?0 G

! j( v7 K; K, @* S) g$ ^;;[
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]]
5 ?* n7 q% [2 y) f7 W1 Btrade-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]
$ `: t" U+ E( f. m" z% T- \. J  C2 q' |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
8 r- \# r# ?0 O7 n2 E; Y6 \neighbor-total
; k) H# X  w/ J) q" t% g% ?6 W7 y;;
记录该turtle的邻居节点的数目. ?( ~* Q% m7 _
trade-time/ d9 P" D1 f9 _, n
;;
当前发生交易的turtle的交易时间! n9 v5 i! r2 ?; \
appraise-give
2 P" |( `) F5 j2 N;;
当前发生交易时给出的评价% Z+ L$ A8 T9 w2 _3 n
appraise-receive- i: w% C; e( B2 @$ T7 A
;;
当前发生交易时收到的评价) n3 C" H0 |& I4 }8 Q
appraise-time
  D5 B/ @' [5 r  R;;
当前发生交易时的评价时间
. j, O$ H! J5 J3 N% N6 O4 Z9 Nlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉' L+ }& ~3 j4 F( e
trade-times-total2 X! u( r0 L, E5 k9 _& {: F( i
;;
与当前turtle的交易总次数
- B6 m! u& y0 k& D/ r6 Rtrade-money-total) q# P" H0 r/ E4 s  F' L
;;
与当前turtle的交易总金额' r( @- _7 x8 [0 g5 r
local-reputation
8 ^) e4 ?2 Q6 y$ p% V' Y* Xglobal-reputation
8 l/ M9 k6 [. ^( e1 V9 Icredibility* z3 ]! ?: y9 ?2 J9 f) W/ M
;;
评价可信度,每次交易后都需要更新
  e! h' h4 N+ {. p7 I0 bcredibility-all
' F0 [  D/ B& e: D! d;;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  _  `2 S- T
9 ~. b) K* K( S4 ^
;;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# N5 y5 K/ k! [% e" b$ z
credibility-one
5 v+ @. t: _- }3 x* Q, r;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
5 [# m5 F1 M; k# o* y+ [global-proportion
+ h5 p8 f4 k$ I$ S: o& g, n+ gcustomer5 K/ A: F  E* \4 @% W9 s$ i. E6 m
customer-no
: {6 A' B3 V3 ^% o; [trust-ok  u. n) p: M4 B+ O, o; R# S
trade-record-one-len;;trade-record-one的长度  g. [- m1 N! R
]6 J  k2 H: M8 ^! ?9 t5 d
, j8 \/ z. D% W# q3 q/ o$ [8 k$ [
;;setup procedure8 t6 d8 ^3 ?$ i+ S, c

7 [  o$ T3 h0 }% w7 @/ ato setup2 x% [0 l" h6 ?
3 `6 w! r1 N- X3 `( E
ca

; K; J$ W, m9 V" z/ D5 {  z
6 e# F' i2 M8 {9 F# Y- ]: y4 \initialize-settings

$ v# h2 t* I5 j' |! _3 z  R; _
# N( L, k3 {: w2 M9 l8 {! J( Ncrt people [setup-turtles]

. P6 p0 v& E. D3 e( [- b) U, f6 _4 G* M- g1 t7 V4 k
reset-timer

" Z* [# H$ g7 D- R; r) }
" k) q$ D; J) X# Vpoll-class
' _! J8 ^( I" [! l' }! h
" v' W7 r0 z! `* C* g
setup-plots

' X. n, ?3 I1 y$ U4 W
% E9 E3 q2 `6 \- a! D- c* ~9 d- U. udo-plots

  ^; `6 q$ i$ D' v. Cend
$ j4 C, }, u' f6 S2 `
/ o6 a/ u3 d4 W7 M( R4 eto initialize-settings
! y+ B- L6 @( ~) y4 S' J2 U1 Q/ W
  l* o+ H9 S9 l% [set global-reputation-list []

) r2 l" _" n; y2 f( I0 Q
) J. @9 u. b# R0 [3 H/ ~& Lset credibility-list n-values people [0.5]
& ]* J3 \& y) |6 T- v- i
% O6 K9 k# v: ~  K+ x' M
set honest-service 0
( C: _5 {/ y: |9 u# P

, s1 h0 G1 e& J# z* oset unhonest-service 0
2 c: [( K( T3 Y0 ]( S
3 n" [0 i3 `) T- X) ~$ k2 F; H
set oscillation 0
* e& h7 ?7 ]+ e

3 ~0 t! p6 v4 W  ~set rand-dynamic 0

3 ?8 Y+ |3 q. d- o& zend
2 V9 o$ T  ~8 Z4 S6 g: V6 i1 v/ F- s- R- f
to setup-turtles
- S6 k; i3 K6 O3 K' O1 o/ ^0 sset shape "person"  B8 m! z/ e# G2 f
setxy random-xcor random-ycor
; @6 N( f) Q8 ^7 P. C9 Hset trade-record-one []' R$ b- e5 Z  g' ?. W( @
9 ]9 L2 ~3 I" R( e. W5 R' [' |
set trade-record-all n-values people [(list (? + 1) 0 0)]
; a" a5 r6 }5 _( W0 r) E
! ^! q  _# R  @. Z2 Q5 p/ {# A& |7 f
set trade-record-current []- a2 a$ L* w) N( R' c! l/ {* C
set credibility-receive []
! K3 ~' F/ j- Oset local-reputation 0.5( M- N- D/ W$ Y; Q* i7 Q: {
set neighbor-total 0
5 k* {2 ]# c6 i2 T% a3 l( S  Y9 tset trade-times-total 09 d9 o  |9 W. L6 c2 F3 V' J
set trade-money-total 0
: m4 C& v  y4 e* ~( s0 ^set customer nobody
" A* T! x* H' ~( \+ f- c1 Uset credibility-all n-values people [creat-credibility]! Z/ Q0 Y2 |7 b( p' {
set credibility n-values people [-1]
# H$ w. d7 `) |- wget-color
" r1 t$ Z7 ~" A5 r  r( f
* p1 C: u: N1 g+ b. @: q) G% L
end
2 a* L% {0 A2 {& A! u0 V; R" A# Z/ Z
3 H5 L0 `) T9 p7 o1 G/ M' I4 jto-report creat-credibility* n: q1 D5 p. H" Z- [/ |' @* \
report n-values people [0.5]7 u+ }9 j) \) ^9 O) U5 P
end2 f$ u* m/ S0 ?* Q9 d# P
2 n, |8 E* O$ u8 p& }
to setup-plots
! Y6 z) X+ h8 [. ]
% Z. d6 d- O# J4 K2 H+ P) B+ Yset xmax 30

5 R2 e! r4 s* [: j/ a- w( F
4 z7 T9 {% i0 V, K# A5 J) Dset ymax 1.0
/ s) b* F! \/ Q6 a9 W  Q/ x
9 i# P& j% N# m, ]) ^* E4 Y4 ^' p
clear-all-plots

2 o/ \5 Y) w  X! K; A( ~  u9 `% u! I  P: J0 ~0 X$ Y7 ]5 f/ h$ ^  \+ y5 z
setup-plot1

* I' x- o( W- H2 p% p$ l* S0 K% _- F- q9 x/ H
setup-plot2

" Q. n4 O4 r" X5 ~
6 e5 ~' n7 |+ |6 fsetup-plot3
8 U2 v+ z0 y6 o7 B3 g& A5 _
end, Z, w; i2 s5 c: f; M0 _

/ F2 r- z6 i8 r6 {3 s. y;;run time procedures
2 h8 `/ n2 K: g/ v# {& J7 ^: G' ]' g2 c1 [0 `. D7 `/ c
to go7 g) c+ A  ~. a2 T" l2 Z
/ d, `* F" P+ ~. J7 i
ask turtles [do-business]

$ t; I+ S! @2 d" k, ^" jend: d; _1 W8 e0 c4 l+ k! w( m3 s( o2 `

0 y7 d9 z; ?" Q: V( y" [to do-business
/ Q. f8 Q7 m* q* i/ @$ ~7 t
" ?0 r; H+ t7 e) }# v

) x- _/ h8 W) G. O4 ~+ W; ?rt random 360
* d* g1 |+ x5 t( l
& ]& p0 s: E- Z8 w+ C/ Q' l1 o
fd 1

- Z& `; t7 x3 m2 M" _3 a8 K( u$ N' l' z  g9 P
ifelse(other turtles-here != nobody)[
- C# L  _1 m9 k6 t# L

1 {  l/ m. O" e5 |' N' z/ ?5 }set customer one-of other turtles-here
8 N1 t3 L1 I' X

# H! e, f9 }6 v, t" i4 ^;; set [customer] of customer myself

+ l" z0 m9 ]; G! {1 P4 F+ ?6 ?3 U/ @/ E5 d: b# V" j
set [trade-record-one] of self item (([who] of customer) - 1)9 P0 X: Y% `- e6 U7 M3 m
[trade-record-all]of self) ?0 }! A# X6 l) ]) D7 l0 J
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
' y" \7 C: l6 e: d: t, |

' ^4 P& z# ]5 j" ?0 R5 P4 _set [trade-record-one] of customer item (([who] of self) - 1)
4 T: r4 V; J( I# `% U7 a+ o[trade-record-all]of customer
/ |1 @( A8 u( a" E8 G

% q7 D0 n: s* Gset [trade-record-one-len] of self length [trade-record-one] of self

, R% A% S" y& k  x2 d% C* a, Q: S7 J/ @6 v! ^6 U
set trade-record-current( list (timer) (random money-upper-limit))

. t3 S% k7 o( E# Y1 |
7 M/ Q1 v1 C* E' Nask self [do-trust]
# I0 b; l# l, Z, P! j- A( E/ o- ~;;
先求ij的信任度
3 O1 H" z7 z5 y5 {- F" {; A* w7 \0 P5 `3 J( i% a9 [* v0 G
if ([trust-ok] of self)
3 g3 C7 \$ w( O0 W8 ?9 I) M;;
根据ij的信任度来决定是否与j进行交易[- Q! G( [$ a9 ]" A* ^9 l! Y
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
- y5 J1 n# l( x2 n. s/ Q$ I" k9 Z& S6 t9 F4 O0 t
[
0 A4 A$ N( M& v. B5 @6 ~$ T
" F$ i' y) |; ]! C- o
do-trade
/ x1 h1 m% c5 C$ {  u- ?' j

3 M5 y8 a' ~: u5 N( {update-credibility-ijl
6 S5 `- g% X( _' w8 m

1 _! ]+ ]; u1 z6 bupdate-credibility-list1 t- k: |* p& e  o
2 {8 l, w! D& X4 W- A5 ~" R
4 F( a: I( ^$ m$ a3 R5 r5 @4 m
update-global-reputation-list
; i, u4 Q9 i4 u3 k
6 ~# B1 h* [. X0 l# D
poll-class

* g; Z3 N! I- o# s1 F" ]2 f  ]5 c3 ]% _5 [& X) U9 M( [
get-color
1 \  G+ {  w, A8 S9 s5 f3 r
# s' c3 \4 D" y
]]# `2 t: j" A, ~

9 `' ^% k2 z" c& ];;
如果所得的信任度满足条件,则进行交易
4 a4 V# p' V0 Z  y9 T* C1 U3 n7 d3 j) r: i6 _+ Z
[
# Z# X2 u6 c+ C) H2 _
& P; f9 `8 K0 U( t7 D
rt random 360
9 c% G& B* p6 h. [  _

9 w2 x5 y* P2 {- ]8 Z# b4 Pfd 1
; v. D- m/ A6 \- ?/ [5 l0 T
, }0 u/ v8 {, R9 y
]

6 }4 O$ R7 T# a5 x9 w+ I0 j
- Q  z; N  r1 [5 B- z$ G, cend

( f- j8 j# P" Q
/ E& J* t5 u1 s( I, {% Cto do-trust ' ~- k3 i+ b: V1 l
set trust-ok False/ x% X2 x$ z! _/ F. R, _7 }3 @
7 [+ M& b9 z% T& N# U2 |# c
; o" [) i  J8 V$ s; J* ]; K1 i' G
let max-trade-times 0
) S1 G0 g, ?2 dforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
" o  m0 o3 D' N+ j4 e$ blet max-trade-money 0
: D) U+ I( @& I% Vforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]& Q- q. _3 I  J4 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))
# y  A9 Z. ]6 d& z6 @, K- I& z  H- m

$ z) a1 J, `+ Q- ]5 r( mget-global-proportion( _! @! o0 ~( a8 n% z
let trust-value) v0 {, X+ l, E  s  X
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)
) V( [+ I$ e' X5 a) I* g, f0 p
if(trust-value > trade-trust-value)4 \5 E, y& {# \3 @8 T& l! E) s
[set trust-ok true]
: M) ~& H" B5 a9 A7 u' vend7 E3 _& D0 ~& Z7 a, r# G9 `
1 Z$ y  B$ k1 S7 M: F/ r0 r& p
to get-global-proportion
4 o) F2 M, E: E# s8 c/ l  K( ~+ e6 Y4 L! eifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
! f6 ?2 X1 D4 Z5 ?8 ?[set global-proportion 0]9 \1 t# N1 f( `: ?$ R" C+ Y5 e
[let i 0
) `6 ]( @8 {& L8 E' t& hlet sum-money 0; J/ y: [/ F; q0 B: h; p
while[ i < people]; F/ l" p' V0 K  P8 I; K" w0 H3 r1 t
[! a5 i& D& f9 i( u6 }; L0 p
if( length (item i+ ~! {, X7 u1 K- c: \
[trade-record-all] of customer) > 3 )

% {8 ^1 j0 Q' ~/ k' @, t6 I[* m1 @4 b' f( @
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)). e2 \% Y) M9 q+ c+ L0 d
]
% s$ R/ i: [. x! V% ]- e' }! A]" c; R' [  b) \% m/ s9 r
let j 0
5 w1 v- K1 e4 ^/ z! ~let note 09 L7 G8 x+ {/ b5 b
while[ j < people]2 @, ~$ C; U' u3 R1 h
[
" `" J8 L& B6 G" Mif( length (item i1 t/ k' X: S2 h2 {( G
[trade-record-all] of customer) > 3 )
3 z9 q& {' }' A( ?$ c, k
[
% T/ j$ b9 l& z# N+ Gifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)7 n+ [3 _: A% s5 X0 z+ o& \
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
; W7 x( H0 T- a- I2 K[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]2 f7 r" a' |2 j& c5 z; x2 k
]$ W) i; b8 M- i5 a: e6 C' q% c/ D% |
]( p' E: A/ b& L" o
set global-proportion note
$ o+ w& Y3 ?0 w( S]
+ j. J& x+ n5 T) O) ~1 l# M0 Gend3 S/ X7 \' S; N% i9 A

2 R5 X0 ?  f" n* ^. T; ]* |to do-trade
/ |" q4 G8 T8 [5 @& r;;
这个过程实际上是给双方作出评价的过程8 y2 ^5 Z7 E$ @
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价% s- h0 F5 X" k
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
3 J0 K9 W7 a1 \$ Jset trade-record-current lput(timer) trade-record-current
9 u, O; I4 }2 [;;
评价时间( Z* b$ J6 V+ R, G
ask myself [
/ J' u7 p( o/ ~) Y& V& Wupdate-local-reputation
3 i( R/ @# B2 Eset trade-record-current lput([local-reputation] of myself) trade-record-current
% V/ N; O- C* l& T1 i]. K( X- A/ u& [& `- B( x
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
% K; \' C+ X7 _# };;
将此次交易的记录加入到trade-record-one' o: i; L/ k" B( t" a9 H8 O- r
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
' U" F5 z6 R6 Clet note (item 2 trade-record-current )# U9 N5 ?: }+ _5 w6 M! c
set trade-record-current
/ _9 K! F% S( n$ k7 W(replace-item 2 trade-record-current (item 3 trade-record-current))
( o7 v0 Q1 y( b8 ]) J: L
set trade-record-current
& s1 `! c$ y2 y2 F" q0 Z+ ^(replace-item 3 trade-record-current note)( p9 M) B$ ]3 z) k- X5 t* k

, W& k' w; l- {- d/ M, `  {; F6 F

! H7 R+ n9 M% y3 X  I$ K* d( k# Y6 G! task customer [( [4 V% H  k1 r5 M" U, j
update-local-reputation' N- I) }. j1 J
set trade-record-current
  @$ v' Y, M* s' d5 p(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

8 R1 d% y& L- `4 u) i$ n& S]
( n2 H" n9 ]1 {4 U# `# n) S
3 c; J2 B- U8 V" v% N- l) c
( r- p# A+ p& T; k* @4 [% K
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
. h5 R% a) q* ]: E  @1 v( e0 J

3 U0 i4 y& a* b  @( U, hset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))8 B, g  w9 }7 N5 D5 q8 E2 D
;;
将此次交易的记录加入到customertrade-record-all' B/ d/ u9 g/ z2 O7 o4 s
end1 k* @; k2 z& o; g
5 x4 u! G& S4 x' L$ t* N
to update-local-reputation5 _8 X7 X! Y# Y+ E
set [trade-record-one-len] of myself length [trade-record-one] of myself8 c% X/ v9 X( y2 q: @  g/ f: g& M/ j
6 f1 g9 ?' w- b. d" F

" D+ T! N/ o9 |8 K3 s- U;;if [trade-record-one-len] of myself > 3
" R: H( M4 y2 ?( ?
update-neighbor-total
+ r9 m" d( z! E! j* F5 Z;;
更新邻居节点的数目,在此进行. E* _6 O: q1 |$ {0 K& G
let i 3) ^( R$ m, H: H- E
let sum-time 0
) C, D- r" n3 }5 B, q% Z5 fwhile[i < [trade-record-one-len] of myself]
. |7 d) _! d# v[
3 ?- s# A$ u2 jset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )9 o1 N' {! g8 ^- ]% P+ F
set i9 u/ B, |& m2 J( r1 }; P6 F
( i + 1)

8 z# P9 t7 Y6 p, N* \2 x' C]
' P: T5 r- V( S4 W3 V0 ulet j 3
* F/ _' o* ~& r9 L) C  rlet sum-money 0
. b* v5 |2 o& w6 @9 p; Y, A$ q% C! U$ swhile[j < [trade-record-one-len] of myself]
1 a/ ]% j! }, p" r5 a' ~[1 [/ h0 l# L6 X6 t3 D9 [
set 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 e/ b, a% r# t" t  L$ {1 hset j) l8 Q  |5 a0 h8 p. ^% ^
( j + 1)

' \, U9 h! q3 Q, ~$ @3 n* p]( X6 |3 B! [' u% q
let k 3, @, L! }$ U/ j
let power 0
2 k% c  Q8 a* [) N7 K& d) P) N+ Ulet local 09 p, n/ C4 ~" `: F' {& p0 w% L
while [k <[trade-record-one-len] of myself]
$ E' G7 X+ R- ?$ |3 D$ T[
" V1 C( d! @% w& Tset 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)
: C6 ]4 ~  E3 nset k (k + 1)6 Y: b: i0 a- A+ d  N, {6 g; u
]* E6 Q/ R# m) z* C3 ~: d4 _
set [local-reputation] of myself (local)( p8 R- R) m7 S5 u
end2 {/ P# W7 a  y( z

; z1 n7 h$ Z6 p$ m5 ^7 e$ oto update-neighbor-total
) O/ G$ K, C+ t0 U
- Q4 I8 C+ P. R4 n, F6 }if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]9 s; q* g! D6 t9 z( O
7 w, {* n# h" N

, I# S: Z: ]# y" J6 Tend, U" _5 \0 v5 a9 l

+ ~* k3 O! {, N  \2 K2 Jto update-credibility-ijl % E8 n+ n* j- g  ~  r, l! q) T
  ^! K' E$ q0 _- \' k  \
;;
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。
7 G7 s/ ]) |& P* `0 s- i6 plet l 0
7 a, _3 ?" p! d5 kwhile[ l < people ]9 H. o4 B8 a# V2 o% {  Y
;;
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
2 J: ~% L' G) P[- G5 f8 Z; |4 S7 M) }  I- M
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
2 U, Q: `3 s; M/ W+ v7 D& h( sif (trade-record-one-j-l-len > 3)7 C4 a+ a3 f$ B3 P
[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
: |6 ]* T/ `4 U+ Q0 @0 mlet i 3
' M# a" r9 `) K% v. w( Mlet sum-time 0
$ ~; g/ _) f- z9 m0 twhile[i < trade-record-one-len]
) _3 H7 E1 F- n- h! j* j0 k[7 I" l5 M2 k; f0 ^3 U
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )6 g% r! j  H+ b8 q: y1 B# ^
set i
' e& ^1 Y" r* F( i + 1)
8 f3 k6 l5 F3 X2 {
]
  k$ U/ c) z& ]% G. glet credibility-i-j-l 0/ F' R  G) {' E* B$ M( \- X
;;i
评价(jjl的评价)0 |  w- C# u1 Z( _4 Z3 Y
let j 32 v3 ]9 M9 m& u9 J2 Y3 ?  g4 N
let k 47 c. t1 Z! q% U2 P/ h& h8 ]
while[j < trade-record-one-len]
/ V4 K; i+ `' b! L* y) q7 V[3 Z# ?7 |. \3 ]8 b) R7 r6 d
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
; I" G& i7 ^7 Q" mset 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)) o! a4 b& ]' o1 Q
set j
' K, L7 ^. w* X$ p( j + 1)
9 b7 H# q0 t- P, ]2 Q! p) g. @
]
  r$ N2 z( U7 y* Mset [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 ))
. }' e" `, c1 V7 [9 _5 M$ \# c% @6 r8 E; Z
# I7 v. p  B- b1 G
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
* m/ x* K2 F3 o;;
及时更新il的评价质量的评价: m, N7 M: h! w- p5 G
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
5 s4 Y- `  ?! h) R# s3 Y" xset l (l + 1)7 V, ?! [- L& k# Q& k* \$ V) D' _
]
! F: m' x$ n$ u) M4 ^% k: qend' }8 e7 N! J0 R
8 w  r7 I7 T/ v5 ]1 Z
to update-credibility-list
" o! z% L# S1 xlet i 0
. X6 d: a! {4 s) g$ Z3 b1 fwhile[i < people]
/ C& w( j0 N/ `. u  z1 \[
0 i& p: o1 z* F0 l2 N' @let j 0
) j4 A; N# Q9 U* v8 w, E/ clet note 0* d; L* P6 A6 Y7 [: i
let k 03 ?: O, J0 B" \, o" l& x/ i. z
;;
计作出过评价的邻居节点的数目
7 `7 u/ y) B+ w5 k% E* Ewhile[j < people]
' o+ w- ?/ v  y: r. ^[
. @) P( Q$ d" a- Eif (item j( [credibility] of turtle (i + 1)) != -1)
2 M1 _7 U. `) p;;
判断是否给本turtle的评价质量做出过评价的节点
  _6 f: J* C! H" O# g: `[set note (note + item j ([credibility]of turtle (i + 1)))
6 F2 h+ a$ @. Y6 e# B) ?  x;;*(exp (-(people - 2)))/(people - 2))]
9 h* J1 W! v/ Y- F) ]$ \- \/ T
set k (k + 1); l) ^& C' j3 x: n9 M2 d* C
]* T4 Q3 Z0 S# v- p, x- ^$ l
set j (j + 1)- _  f3 ?; B7 ]# _3 J
]- z) x) A9 ?' R# \) x5 A2 k9 m/ Q
set note (note *(exp (- (1 / k)))/ k)* i0 z/ B9 w# M2 G5 ~- b
set credibility-list (replace-item i credibility-list note)
9 \* m8 d( `7 Z6 J* M) Fset i (i + 1)
2 a" p1 s$ f9 s- L]
/ F( s  ~: t* Y: _% ^* h- [# ^end, q5 u" U0 F) W1 Q4 Q5 |

# H- s, {$ Z, n4 Eto update-global-reputation-list  `- x, T/ l) }0 {  R
let j 0
4 T8 d: j! I" i4 e" V3 Q: _while[j < people]
9 }6 r# ~& H7 }) G; }* x: V[, ~( m- M/ V7 z4 t  z3 _1 ^
let new 0# G$ G% G; W' u. k( b3 Y
;;
暂存新的一个全局声誉
+ C& u4 s& g- ~9 g( Alet i 0% @, i! E; |+ Y" c% O
let sum-money 0  C( K* c& k# m/ |. I
let credibility-money 0
$ u4 c' ?7 _  W) i- Zwhile [i < people]  I- A1 |0 ^0 h' j- f5 ^
[& z! c9 ^1 U( `5 }& I* b8 J
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
! V8 y/ ~( _6 X. b* q( zset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
6 |& X! _. a3 g* bset i (i + 1)
: a. D( S) L  ~: y% x]
' x* v% _: d  B& N( p5 D( a+ plet k 0; Z' p4 n+ M% e# t' r/ d" H
let new1 0
! U- i# K5 ?9 C( A( hwhile [k < people]6 `1 p' Z7 `/ e% P' T
[( S8 T# m) j6 t/ W$ D0 Q8 e; o0 M
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)
7 a& U/ A$ a, W: `6 e8 q  V6 f) Zset k (k + 1)
7 G4 o% o$ k. H! e% z]* U4 z% A0 `( _7 s; J
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) * C  b, @' z) N5 e3 Q8 V
set global-reputation-list (replace-item j global-reputation-list new)& d2 l. z1 U6 `, x) g. ?( q6 i
set j (j + 1)* X& ?5 h! P; r9 @7 m+ A; J% T9 J0 K2 A9 G
]
$ H$ i2 M  ]! k0 W% `. M3 t# O$ Gend3 b$ f4 s. w1 Z1 s& z. a5 e( K

# g) `  B# M+ ~% d9 X
) N- r) E' f& R0 x2 u4 J4 M
6 @2 F* F: n) h8 tto get-color5 J  U; y$ J) x( D
8 i6 N4 i% p0 e
set color blue
/ _4 W0 U& ?1 w+ x% S8 s
end
8 ^9 e2 u& N! T$ a
& I2 A& s0 I3 o4 d$ x' W. Qto poll-class' v: _3 B& B# k
end
8 |8 Z+ p- B+ o: e' Z3 g2 L# m
; B5 Y3 ^, e# ^% fto setup-plot1
$ `! B' u7 s* E% w5 T5 X% h- Q8 u
4 J1 a+ P1 b$ [1 R6 I; `set-current-plot "Trends-of-Local-reputation"
9 t+ z9 D+ P- ]& W9 m

" l* I: j2 d$ I3 S7 Hset-plot-x-range 0 xmax
$ x8 r( }# K$ G4 u2 G- O
$ E9 T0 L3 p; C4 A# X9 {7 `
set-plot-y-range 0.0 ymax
! l& n! s3 ]3 R( Z( a  ^  M
end
( W2 S& d: b7 M
) }. B1 G6 O6 ?; H' S( P% ^& T8 |* kto setup-plot26 p- L2 N  T0 ]; A* ]- V% f

2 Y! d; I2 e# U* C" uset-current-plot "Trends-of-global-reputation"

3 @$ d; q" r. i/ w7 A" P1 a& e2 Q
6 q& K- c. K# ?6 r9 e. u2 @set-plot-x-range 0 xmax
( j# a) }$ W! ?
4 R0 B. \$ C1 \: ]
set-plot-y-range 0.0 ymax

7 N% U4 `+ U4 Gend" \0 X$ M& E+ h- J& y  m% B

! U& M/ Z7 n6 f$ }0 {to setup-plot3% ]  f4 W* A5 B, A, ?* J
) a7 H9 y1 X* d
set-current-plot "Trends-of-credibility"

( t" n  Y9 A$ f3 \
& b  H/ q2 C* e. [1 [! z! ^set-plot-x-range 0 xmax

6 O* v: |2 @5 T% l' _4 g) m, ?; B( j0 C
set-plot-y-range 0.0 ymax

6 f  u" x. v. d) p& Z, W; [end+ ~/ ?" s7 Y/ M' l+ [  P: l

6 g  N+ G4 Y* H) x. B' p, eto do-plots
& m( z! r$ ]6 ]set-current-plot "Trends-of-Local-reputation"  q% E  t/ o# J3 h9 B' b* O. K& o% a
set-current-plot-pen "Honest service"' b' Z# q: R6 S) C9 N+ j* X
end' P  h  T% Q3 s2 H, E

; Y4 s, [- }. W0 b; |[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
( Y* h# P" T) u/ S( y, y8 U8 u
# ^7 u0 B) k: j6 S5 j+ [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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