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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:3 \6 s7 k. G" O7 }8 }
to do-business " x/ G4 W+ |9 b$ }5 D5 ~
rt random 360: \9 g2 O3 G4 z. M
fd 1$ A2 o, p  q7 Q
ifelse(other turtles-here != nobody)[& b8 w) t5 i+ r; i$ z4 P+ c
   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.8 c% D+ z1 _, B" l+ ]* A5 T
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
: V) u8 T/ q% L; y   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
! s9 ?3 {' L; u9 [& P* |   set [trade-record-one-len] of self length [trade-record-one] of self7 ?! n9 E! u# n3 M; q4 y& @; S+ k4 f
   set trade-record-current( list (timer) (random money-upper-limit))2 l  S% W& @1 V9 g) F9 x

2 {" p2 E  k; ~1 B$ t4 I  [问题的提示如下:! c1 `7 }) M2 F! e; `( g$ G
2 V7 t2 Q- }. Z; a
error while turtle 50 running OF in procedure DO-BUSINESS! w7 Q; E/ k3 |% `+ y; x, g
  called by procedure GO/ v; C$ _# D, z% _
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
- c2 g* g. g9 Y0 p' Q  M
(halted running of go)$ A  q! ~, I' @" c. ^0 h, h

# |$ \* J" {9 k; {2 R1 d' I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~~$ b; n0 O' _7 ?$ t% |
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
  L6 p& w6 ?! k0 g# ?- w0 y- @2 T! wglobals[
3 Q0 x4 M1 L/ p+ E# p: _4 Dxmax6 t4 w- ~3 h% i- G/ ]
ymax
4 z- f, @: y& uglobal-reputation-list" [  |/ B: b3 o

3 x; m9 ^; g* c4 [; d) K9 n8 F; d# A6 R+ ?;;
每一个turtle的全局声誉都存在此LIST0 r: Q3 F& b  O8 c3 X$ Z
credibility-list
# ?8 @# m' F- p/ g  g) b;;
每一个turtle的评价可信度: B- h( Y" f" q4 k0 M5 [
honest-service
, m5 I. d! x1 k" v+ Tunhonest-service+ p4 F' V7 H7 @- E3 w
oscillation
6 d0 y. H8 N8 o. i2 ^/ _# ~" O; Lrand-dynamic
1 _& y6 o$ J& g( e]8 e3 k2 K3 x1 e6 y% u; o+ Z' G
. k& Y% j. O) u6 l4 ]6 e$ c
turtles-own[
; I" _! ~0 i! {- u3 a. `trade-record-all" P8 y/ @' R8 o$ w* }3 R
;;a list of lists,
trade-record-one组成5 n% r( _" B: o" B8 D! f; N2 [9 n
trade-record-one
6 B  U8 U2 |& l0 r;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
/ C+ n! V7 K; m& \" z
0 d6 h- K# m. J: n# h8 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]]
/ {6 _6 @; m( wtrade-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]+ ~/ e+ {9 U2 N4 @
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
" N. D$ y2 \# S1 yneighbor-total. e: ~( V1 g6 L* h/ ?
;;
记录该turtle的邻居节点的数目
9 V/ ^6 ^: Y, T3 h6 i2 `trade-time
1 ~) v( b7 R( U;;
当前发生交易的turtle的交易时间
# S5 X: S6 w' X7 Z8 _- M9 nappraise-give- o; l0 D5 I3 y& R& ]
;;
当前发生交易时给出的评价  v0 V- K  y% K1 ^- N( x8 z
appraise-receive
( e9 E- e2 r! Z;;
当前发生交易时收到的评价
4 F- p5 h- o) W# k/ Zappraise-time
( n1 I; i' d; Q) S! O3 o;;
当前发生交易时的评价时间' [! u3 G0 M: H/ a3 ~5 E
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
8 {9 d) w7 C5 ^7 R% D& u2 w+ R/ Ftrade-times-total. {2 ]: Y# r: P5 E0 r
;;
与当前turtle的交易总次数" B: y) n# \% r" H
trade-money-total) n( i( H4 A" y! d
;;
与当前turtle的交易总金额; \& j' G/ S: a  w9 E+ \5 b. y
local-reputation8 }4 n/ j: r/ z, Z5 l9 x
global-reputation0 i; N  Y2 z1 N: @
credibility
. f9 a& b# {6 n;;
评价可信度,每次交易后都需要更新4 J& L" k! J) m; w
credibility-all
' u3 \2 O6 d0 ?4 B8 r% l7 M;;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' y5 n, ^  h+ c2 U5 O

- l  K1 n( Z" I  H6 X" g" U7 b' y;;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0.53 f! q5 R. ]% @5 x9 z  z
credibility-one8 F0 O9 S' M7 [3 k
;;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/ h/ H) w! z* x, Y5 v0 X( }% d
global-proportion
% j  e4 U4 S6 E6 y! Z9 ccustomer; m8 f4 ^- c8 J1 d; f! j
customer-no
& B- L* E4 o/ A7 Rtrust-ok
0 f0 |+ K- Z# Utrade-record-one-len;;trade-record-one的长度- b8 f/ Z% ?" C6 X7 j2 `
]6 h( ~$ v9 Y2 y  ~: ]

/ ~! M9 o. u" G2 W  P$ z;;setup procedure
6 U+ Y& }- h2 J# Y# {, \; u5 k  O
7 \2 A/ T. r- [. N3 l! q, ~. Dto setup
- k0 P: g. H; \% E
) W% H4 l. t- `; ]4 Hca
9 k; r% C" s  S7 k& O6 O7 i( A
' z, l5 U# w7 f
initialize-settings

& N/ T9 a) z9 F" l. t$ `% `6 D, ]( s* V8 c
crt people [setup-turtles]

& n3 G' Q( |- B
4 ?# J7 P  B+ l' J+ s0 X* y3 Breset-timer

/ Y* t7 R! n3 `/ g0 c$ M8 B9 w, G8 I7 a
poll-class
) w# F, [# H- D( p) F

' c& W$ l- b3 z* t# ]7 fsetup-plots

6 Y: a# |, d/ X# t7 t4 V& R$ q5 e+ ]- R. ~, e! i' R4 S3 h3 q
do-plots

# x. w& U& }: S4 W6 ^2 q/ dend2 k9 s* F6 X& G2 P& i$ T  ^
; U1 j* h) T2 o$ q" \9 F
to initialize-settings# }  ]" A% v! m9 X) ]

% ?; h- r* m# jset global-reputation-list []

; x: R( G4 E% t3 c
! s- N9 t. c' Z' D& E! m& Mset credibility-list n-values people [0.5]
5 K$ s0 b, ?$ U% _

: d. u, l+ Q) x4 }; i8 ~set honest-service 0

& s& Y) [+ C9 v* ?* G
: m2 E2 g% C/ ~6 b% U: \7 y! Zset unhonest-service 0
. }6 Z; l% w! _( l
3 B2 S4 Z2 h, Q  o" j
set oscillation 0

$ b5 U8 q- h3 J9 c
( F! F: [+ o/ rset rand-dynamic 0
+ v. C( j+ x7 {) c; G
end
* A/ c5 L* {8 ~- S# _  S$ C2 |- _) s' r. x
to setup-turtles
: q& N( A: M' Mset shape "person"
2 }, a9 H% S. O0 q- l- n6 A  \setxy random-xcor random-ycor
1 L( \# Z9 s( Q# A+ u( r8 z/ Uset trade-record-one []
0 ~- f* V  q+ F  v7 m9 L; E) R1 u7 }
( w4 y$ Q6 I/ d5 v1 \" v! V
set trade-record-all n-values people [(list (? + 1) 0 0)]
7 |0 z. X2 s4 ]6 `6 H: o
2 O4 n& l7 C0 z' `
set trade-record-current []
$ L8 Y! X& C1 {1 f- }set credibility-receive []0 v- E& f( O& Z( \# D
set local-reputation 0.5
3 r4 @' e& q$ f- M- f6 h1 m. kset neighbor-total 0& J7 N6 I! R! a9 q
set trade-times-total 0) z) p, k' b1 ~0 ~4 n- M9 F
set trade-money-total 0  `5 B' n( |& B$ c3 B, `, X5 W
set customer nobody6 j/ V7 @& X. r8 ?! z' t
set credibility-all n-values people [creat-credibility]; `# r, L* f# E( G* a* h* v+ r
set credibility n-values people [-1]5 E9 f( d) D$ W8 `( h' p
get-color
, }+ r5 O0 K) d: s

/ v, R3 [& U- y8 Mend: [, R/ Z: C1 a: v+ ]

$ y: W7 Z0 S# Z1 A8 @7 _3 ?to-report creat-credibility$ U2 O3 O% S" W2 X$ V2 t3 O( ^; L
report n-values people [0.5]
& G# V9 v. d0 W1 K8 Tend
1 K7 o4 e$ T; R4 z! W2 O
0 S) V4 h7 k5 R2 V0 zto setup-plots( [  s' d* l0 s$ j+ ?# P
; M# K+ g3 A" F9 ~
set xmax 30

: ^4 V5 Y" U" g& Q" `, D: {3 e. V
set ymax 1.0
! s) P5 }% @& A7 n* C4 s
/ J6 o3 l* o6 W& V* o7 Y. p/ T
clear-all-plots

. x2 Z" M0 R* s. S4 ^6 g# d. D; i  X  D" b) l6 I7 i
setup-plot1

7 g4 _( ^! c* K- Q* k9 S, x  K7 l: m: x, {
setup-plot2

- @5 \+ |6 L; t- v
* @$ |( T4 k. ]. usetup-plot3
& t7 R* |) u1 a7 A; u
end9 n+ d# H- G' y& w  Y

1 z5 K9 a2 h5 R7 `& t& {;;run time procedures1 K. h9 {& S! l- Y7 q& `6 }
/ i3 N( D3 B" C  I% }0 X2 @% \0 T) M
to go
. p7 ^4 a6 |1 J+ Q3 _# a* ]- |. i
ask turtles [do-business]

+ l. N5 y/ A! C7 q' \# F2 E" iend2 Y, f4 v2 i& }" K& V" q3 G3 u3 N2 x

2 q+ h! ^; \" m( w: mto do-business
1 t! B, n8 b" u: u

2 [8 `3 v% B  v
2 o. ^+ G  x; \9 F0 W$ brt random 360
+ W" A6 o1 c/ s! _( s; Z$ v
" D, }  r" w6 h1 H1 {1 u5 {  S
fd 1
0 d  Y5 w8 G6 h5 h
/ K: H" t( t9 {% r1 U2 g( c& @
ifelse(other turtles-here != nobody)[
& ^7 v5 ]2 o4 `& ]  R8 G# X
; D! n0 S9 P$ D$ ]2 U! P* K& e! n
set customer one-of other turtles-here

: n9 n: Z/ u, l5 S* Y6 n* ^" Q) K# T5 N* d% L  M
;; set [customer] of customer myself
3 k+ G# c" w. Z

+ q* ]. R9 t+ ?: Vset [trade-record-one] of self item (([who] of customer) - 1)
) Q4 \& l$ ~" d' u. i( e[trade-record-all]of self
1 V7 b& k( h" w7 E6 O% p+ a;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

( D# q$ C5 j: n" J7 v* D$ F  q: [( c& P9 f
set [trade-record-one] of customer item (([who] of self) - 1)
% g: I. ]' C% r0 A[trade-record-all]of customer
) P0 d: j+ r% O: }

& T1 u) u4 Q  D, j6 H+ Zset [trade-record-one-len] of self length [trade-record-one] of self
5 P4 a$ J& ]% \& j
: i& `5 f" j! @; F/ b+ n' L
set trade-record-current( list (timer) (random money-upper-limit))
4 `! f$ X' _$ q1 u1 \9 B

; @7 K/ V+ k5 iask self [do-trust]
* R( {1 B# E/ s2 W;;
先求ij的信任度5 C1 ~/ U' R0 x- _$ @

8 r  }2 l5 Q5 S: Mif ([trust-ok] of self)% j7 d) b! x# e1 M0 m
;;
根据ij的信任度来决定是否与j进行交易[
* k) G/ B* M  q$ {8 {* O6 J+ Cask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself% H+ R6 H7 G, X) K9 O+ l( K1 l" T) X( H) M

4 v. |& s! E& v[

. }7 e0 W6 F( A/ r$ s
: d3 K" M4 x* c0 h. G& D! {9 kdo-trade

5 o/ @$ x9 H& \- _. i. P
8 L; U& S# a1 ]# t$ P+ X  N. S7 Uupdate-credibility-ijl

/ b! _! O* i! w6 t. Y9 R6 A
9 {4 H( O+ i3 k& e" T* h0 e" Aupdate-credibility-list
2 c+ O6 Z) n* `; {( s3 D

2 n$ G- c) w+ p) ^* h/ W
' ~' ~4 F% H% A- H% D/ g6 q& Gupdate-global-reputation-list
, A. y' l0 \6 O; z, G4 h+ [0 H' E

: B& O; C$ {! C/ F; npoll-class
6 y) ^' E9 o0 a+ B7 k
; Y8 t4 x5 S. }" S7 e( }# l/ a
get-color
$ d9 p# P0 ?6 e/ x! Y: O" E; S: J
, M/ |: G1 X2 [, y/ k# W2 V
]]
  X9 f" t: D: t1 H$ E2 N. q7 ?; ^2 H: k( l9 r
;;
如果所得的信任度满足条件,则进行交易# w* z) O0 l! s1 _% k  t
( I/ {9 K8 M6 c  F1 U
[

- f( ]+ i! c( @" d, [: \( w, y' U' R4 j" S
rt random 360
; y3 r$ A- e. c
% e# Y2 n: |; u
fd 1
3 `! {, O4 w/ [
( f5 w+ J( _! e8 d8 \1 v; Y, Y
]
, a; F" L8 C1 Y+ |7 Q

1 ?1 |. C( [" P: ^1 qend

/ I3 f" n' g$ V( G( u, J( e  V! l+ v) p
to do-trust
  Y/ K4 X+ i+ s. w7 |& {set trust-ok False) v$ P( I5 t4 j  y2 f
8 ]: W0 N9 s% v3 q! I% T+ V. B

+ C, x4 U% W% |7 slet max-trade-times 0
* W9 Y1 X: d3 Y7 Q8 Aforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
7 C) L; ]( z+ r6 Ilet max-trade-money 0, }& u' d" _0 g1 k$ h5 F
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]3 t" k" M& \; n  y, ^, n
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))9 ]- S( S/ A, v& ]6 o0 Y& e$ {

% D: f1 I2 X9 E- r" H
) D! Z# Z' S2 w9 l
get-global-proportion2 ]0 L& k8 F4 |2 U# _) F
let trust-value
3 _# m; e0 i/ j1 |+ w; u. @8 v/ hlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
  h! a8 D' b. ]8 Y1 P: G7 o8 l
if(trust-value > trade-trust-value)
7 t% i2 A0 j# ^* C9 {( o[set trust-ok true]+ W, \, v9 Y+ g0 ^
end/ V  W8 c  t* ]% _

1 z7 j/ M2 e! Xto get-global-proportion9 g/ P% T6 S# g
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
" R" E7 S- k" `+ _; m9 K) p[set global-proportion 0]
  r8 s5 |: o4 P8 J' t; i6 X+ N( E[let i 0
6 ^9 G) T. m* M" q/ ulet sum-money 0
* l3 B% O2 k2 k3 t# vwhile[ i < people]
$ D0 _2 F* W3 g+ y3 ?. c, a[+ c$ `6 |" D$ L8 W$ J
if( length (item i
8 B2 E& ^5 \9 F9 F6 Y[trade-record-all] of customer) > 3 )
6 a' T0 m6 `2 t2 x+ d2 C
[% l# E7 H9 S- T: }+ h. {9 W( Z+ F
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))  [) e, b( ?7 K. Z
], H* e+ x5 G% O& l/ [- E# w
]
1 q; b6 R- d1 p2 Alet j 0
: H: `9 {& s: p( i# Dlet note 0
5 }" z5 J& @2 \5 K' _9 O$ m6 `" pwhile[ j < people]/ @* }+ A- n; ]" h" i0 B3 W0 V
[
6 O9 }9 `$ T6 s2 Y( o( X/ H! P( \if( length (item i  g0 c7 B2 L/ ]6 p; j/ u9 W  N
[trade-record-all] of customer) > 3 )

& D( I! N- H$ i5 Z5 w[
/ H/ b) L! s- f0 y; T( }( j7 bifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)$ u( P% Z# p3 O7 F
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]% v) Y. ~9 G, j
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]) Y6 P* N4 q; S: x- ?
]: H) e7 @2 l: L$ S! f
]+ S- n, e- [. E$ U* s- n5 p' @, U% j
set global-proportion note4 h0 E  ?1 f" F/ V" g4 z/ t
]
" v. h- M" l7 e6 B* ?end
3 J5 o. M- M) v6 L+ ~$ M
/ C. t+ l7 f& V. w; sto do-trade
* B' }: W4 w" f. m9 k3 [* @0 S# a;;
这个过程实际上是给双方作出评价的过程0 W; S2 N. [' Y" R$ G8 s7 Q
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
3 u: }9 i; Q' X9 Kset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
; J$ x2 D- _1 V/ Qset trade-record-current lput(timer) trade-record-current, [5 X  ?# I+ J' k+ u# y
;;
评价时间7 g6 F" m5 A/ R! g) \& }% S5 s
ask myself [
6 z, H( D" X3 z% r( ?8 d- n6 \update-local-reputation8 U8 e, C+ R" E
set trade-record-current lput([local-reputation] of myself) trade-record-current
! Z& L5 Q8 V' b/ i. i% o- v]! c) D% T$ l/ ^8 i( Z$ `. J# b
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself' d. Q3 n* E% a
;;
将此次交易的记录加入到trade-record-one. h0 S2 z% s) _( {+ J
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
! |. S) ?; U' L  Qlet note (item 2 trade-record-current )- M  x; `# Y  z6 |
set trade-record-current  A  C% t9 v- a  u9 T9 e
(replace-item 2 trade-record-current (item 3 trade-record-current))

: }& k: P8 v9 d: J3 V& B9 ]" _set trade-record-current0 w; g& s5 [$ |; n* i
(replace-item 3 trade-record-current note)
) h" _- e- |* F! D/ q
: f* J$ s9 d# O9 U

( T4 t2 D; [7 x# Vask customer [- w0 c0 F/ R% S
update-local-reputation
  J6 N: K; Q7 |) j# Y8 Sset trade-record-current
0 n( d( x+ O" ^2 ~) T6 Z(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
- ^& m9 ^: L0 d
]
( ]% I% X0 w7 |3 b; E. X
- v% F; R. ?; e0 e! ]

( g) ~; K$ d6 o+ Eset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer) X3 S9 s$ D8 q9 j
. x" B- w/ ~+ q& _* A' a
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))% F* {5 B4 }; l5 ?7 Y
;;
将此次交易的记录加入到customertrade-record-all) a4 H. X+ [, i
end
  ~: R/ }4 v3 P& e( @/ F# `2 N0 R* j1 u# g: `! f% ~
to update-local-reputation5 N* [7 I- e; z- ^1 p
set [trade-record-one-len] of myself length [trade-record-one] of myself
  Q5 S% u( d: C; d$ B4 G! Z
& _' z9 b* E0 G" S+ r/ R6 m7 X& H: {) R* G  y  ~
;;if [trade-record-one-len] of myself > 3
" i3 Q% w' N3 N$ l
update-neighbor-total' U4 |. F0 d: ~. V' W. @, \; {
;;
更新邻居节点的数目,在此进行1 _2 p3 G( W' I* v' P1 F% G
let i 3
9 L5 A* h4 q# C0 S; j, Q/ Jlet sum-time 0
( }4 t) O6 [* V5 H! ?9 J4 Awhile[i < [trade-record-one-len] of myself]3 S) y3 j/ ~% @. ?: a9 F
[
/ d: G8 `4 X) a0 ], _! jset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )! Y! F  W  N3 `4 M2 g
set i/ r4 z. |! i- h
( i + 1)
) B8 c' F; x0 o+ x% x
]7 w& o6 Z' z, l/ \# J- _' U) W
let j 3! k, p5 a* z& e' ^
let sum-money 0
6 |. I4 b' E: f! P7 Vwhile[j < [trade-record-one-len] of myself]
" L2 a+ i( E3 u$ P9 u. N: s$ C[
% B0 w5 u: c  s- [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)
$ l' |0 B! d1 v6 g% g% p& Lset j
9 S$ ?$ ?$ \8 n: P& k, S( j + 1)
0 D$ r0 i2 g' [" z: ]0 M
]
. n2 V4 s* J# Y; h3 Plet k 3, B- l7 O8 z2 t
let power 07 B! X, X# ?3 Q- e! l5 H, ^  A
let local 0: c: h! ?3 C1 `5 u
while [k <[trade-record-one-len] of myself]4 m0 Y& ?2 X5 A3 f+ j5 K, x
[
7 c" J( m9 y# `4 w8 Dset 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) 7 M# m4 e5 }& H& `* {; Y
set k (k + 1)0 ]8 y4 t) Y* h9 l) [
]
% @, E- ~3 e" pset [local-reputation] of myself (local)
. n0 F1 q. H2 `, [end% b& v' g% K1 D- F
6 m5 D* @- I' t; ]
to update-neighbor-total) J8 h$ C2 l9 J- g: J: m' y; \! u

1 R, E: D- z9 u+ Eif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]6 T8 C) K' m2 @5 T9 h  V% ?# j5 t+ u

* [3 K6 y$ S2 t$ N) D4 N
# J+ d" D) D* v5 X/ B2 t. n) Y
end
3 M& u5 }$ B$ B9 E7 {) t6 y2 |! ?8 D* ?! a# I: h) f! n
to update-credibility-ijl
0 o# U2 f- p; ~# U' z. L  d6 Z$ L. d3 b8 A6 \* q
;;
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 h8 V( y) C& `2 b4 s( L, v* Z
let l 0
9 {( u* ^' u8 O2 E% `while[ l < people ]
1 x9 `' X& X+ I% |;;
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
6 O; J7 ]! A$ l0 }[
* K- T/ y5 A) n- Mlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)! H9 i+ W/ W; J5 G( D
if (trade-record-one-j-l-len > 3)8 f* G" ~! e4 G# Z* ~/ n
[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-one7 U- f3 x  ?" B1 e6 y+ \
let i 3
2 o1 D( J! t% ~5 z6 O7 e3 r9 |+ Z( |let sum-time 0
& w- |% D5 |$ P. ?, G- @/ {while[i < trade-record-one-len]
% ^/ T, r0 x2 i# N- O2 B[1 ]8 I" n9 l0 M5 f6 J; j  O: v5 R/ u
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
( I. E3 R8 f# u- q; C* Nset i1 I; y( ^+ U; |. l0 y; a5 T
( i + 1)
  D' K' c: N7 g: p; g
]
7 J3 G9 B' b( [, j9 J: zlet credibility-i-j-l 0
- N  G( J+ `6 c3 h6 G$ `;;i
评价(jjl的评价)$ U& {- q: S# o2 |/ E/ g
let j 3. y# K" Y8 B: [+ P2 r) A7 ^8 ?
let k 4
+ g3 \4 b  h3 x$ o3 `while[j < trade-record-one-len]' {$ I& K  |8 Q$ k' I
[
( s2 X; ]. D' g* L& W. i; y/ i7 }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
% G) F$ a& z+ Vset 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 Y( I$ P9 w. y4 F
set j
$ \3 j) r3 x6 C0 p8 W2 U5 w5 n7 W0 J( j + 1)

0 L, {: q  c! A7 a8 c9 a1 Y4 L" {5 p]/ Q6 {/ {4 g! s, W1 t5 `: 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 ))8 m. U6 d- O" y; z$ M1 T0 u

7 c% C! a  m2 t5 M3 E" P, r5 }

: ~' M  D6 _3 g) R( s; Xlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
4 w2 \& M& Z5 W0 \& ~;;
及时更新il的评价质量的评价
& j0 J7 x/ l/ B1 |* {' Nset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
/ r2 w- ?# h8 Mset l (l + 1)
* U3 V2 t$ U/ M2 i' J: H! H]  D$ \! X% u# l6 b  p/ N$ X) B
end
/ w3 {( B/ G" A$ d0 d6 W% r  h2 n( q8 @3 F0 _
to update-credibility-list. p( P7 P- N1 r! ~: x
let i 00 n- W& x% f: t1 d9 ^
while[i < people]; j" d, m8 A0 Z0 _
[
6 C0 ?; _3 m. k6 t  K) nlet j 0
; a: u4 X! W( K' Q5 l) d" ilet note 02 A) e: p* v$ c* S9 `
let k 0
& E5 O2 c* @+ X4 E8 A* m6 A;;
计作出过评价的邻居节点的数目4 K" Q3 c: O/ K
while[j < people]
" R3 Q% e' Q% f# b[
1 g5 r9 D7 X# J( x& S; \6 hif (item j( [credibility] of turtle (i + 1)) != -1)# F9 n+ m: A2 b- i  J4 W5 o
;;
判断是否给本turtle的评价质量做出过评价的节点! v  s1 B; q4 Z: E
[set note (note + item j ([credibility]of turtle (i + 1)))* z* v7 f# E' [- h4 V9 D2 `7 _
;;*(exp (-(people - 2)))/(people - 2))]
6 Q/ k/ L5 o* P# j
set k (k + 1)# Q: M7 l5 Z" }- L/ Y' @; Q" `7 a
]
) f5 D( p1 S5 E8 Y1 z& T0 K3 jset j (j + 1)% a5 f/ Z0 C1 }  d0 u+ a, U% ]; v
]
, S6 L* m4 D9 f8 d+ Hset note (note *(exp (- (1 / k)))/ k)# u7 Y- R* k6 l  C1 [- X
set credibility-list (replace-item i credibility-list note)
, F* g- f6 \  l- @. D6 E! t( A2 uset i (i + 1)
+ ~$ X7 z3 d8 R( }* Y5 |]
/ H/ l5 L7 L/ G. j& \end
2 z' J+ v4 S$ S# D7 K4 E+ H9 s; t3 O" c. Y4 w' A" X& F2 u
to update-global-reputation-list
" z3 q. Y+ S8 ]0 ^let j 0
; n4 x- E6 c3 q6 `! T$ Uwhile[j < people]
- l! K- _! D6 w6 b4 w. F5 r7 {0 E[8 S! A: u! \; ^5 c) |- c; Z& `
let new 00 _4 D+ i- @- f6 B
;;
暂存新的一个全局声誉
- r  `* b* F3 y/ b4 \( Z) G+ u" Mlet i 0
  E7 n. N  y, N! G! }; ulet sum-money 0
8 Q9 L8 Z# F' Alet credibility-money 0+ j: ?8 B4 j: n2 e5 X
while [i < people]
* T4 K1 ?/ i% q5 S$ R$ y' ~1 L. R[: @, o& j) f6 \. p: r- ~) }; P: R
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
4 ?. F3 A' ]0 ~- \" c4 }set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
; q4 `0 |) k8 T* ]: oset i (i + 1)- S8 H5 H8 X, Z8 v
]" `8 Y: D4 y8 @- N1 M0 E
let k 03 }# k1 P1 ?1 ~; q
let new1 0
- X; y4 k; ?& ^& L2 _. @, \while [k < people]+ ?  c& D/ v2 s$ l) c% I  a6 X; ?
[
& H( b  F% V1 i; T9 ?1 n' [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)
' K+ n3 u' s. Nset k (k + 1)4 U% j( w8 p9 f3 ?( g
]5 ~  k/ e9 f5 r; @% h
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
2 q' t) F. A( p: n4 p: bset global-reputation-list (replace-item j global-reputation-list new)
  d% x2 ~' h) x# Hset j (j + 1)
7 w3 A" H$ T/ X]/ C. o3 i: w& H/ @1 \/ p- A
end% z% v/ o  C. r8 B, K! a/ ]& T
) m" l; l- n3 p3 T; I

) A, S5 E& g% v$ F$ l3 T" b' q
/ |6 d% \4 c! t) [/ zto get-color
- }. t/ D$ z: x' F/ m
& Q$ p5 C3 o& z( t1 F; l' ~$ @$ pset color blue

5 _1 R/ D* q6 ]4 X- [( ~1 @* Send" y2 z+ }2 L8 ?8 j7 Y* r

3 H) G, H- o! S. u* Jto poll-class
( Q, F  _3 x) wend5 b. E8 O* H; I7 P( q
/ ?/ [5 R& k/ Y- R
to setup-plot1
0 E) d7 o; [- K8 A* f/ G& ~
0 \+ A( ]2 O, u2 O6 }# ]set-current-plot "Trends-of-Local-reputation"

" B6 E* f- H* N; g1 i
, z8 M: I8 @" x1 I, o* L: ~set-plot-x-range 0 xmax

+ c$ L7 f1 W- @" q/ d
7 v$ H) W# ?! Lset-plot-y-range 0.0 ymax
2 l9 v: h' k0 i5 ?3 G" H
end
4 E9 l: h7 m! e
; L, L5 j' H: U# ?; ~% W, z6 Oto setup-plot2
2 V4 H" b$ G% s0 G' I& O
3 \, m6 `# g- }! ]0 q. Aset-current-plot "Trends-of-global-reputation"

* Q+ O2 ^+ m2 ?. z5 x( B6 N6 B  M/ h3 u6 p5 B8 q; P5 K
set-plot-x-range 0 xmax
4 b" X: z1 e- M- c5 Q. g3 h
4 r6 g8 s5 m' y! s, J0 i- y
set-plot-y-range 0.0 ymax

# I/ `* c* w. Rend
& G7 f8 A/ L( E/ V/ \  v/ a
8 R0 D. g( b( j$ h) k  r! ^to setup-plot3- r/ o# P- w- }+ M4 l- w1 ~
$ m: ^) ^2 l. K
set-current-plot "Trends-of-credibility"

6 w9 \7 e: {+ W& f. g5 d4 C0 j0 m3 Y- u; m1 P9 Z. B6 |$ \, W
set-plot-x-range 0 xmax
1 b9 R& |+ [: @- i" @# ~, e
6 D7 o! h5 T, F7 v; s9 W
set-plot-y-range 0.0 ymax

% Z  b8 b8 D! ]  i3 k  u( h7 {end
3 ]$ S: ]3 {# i
, A0 I! N# x6 n0 ?  \, U. fto do-plots' H, P. I, R' e& q8 F$ R
set-current-plot "Trends-of-Local-reputation"
( e0 Y' l4 U& W5 n: W8 @6 O( Bset-current-plot-pen "Honest service"
5 H& k( i4 G6 Vend2 b1 ]/ c3 M" q4 I
  }8 Y' {* _$ _7 @7 Z
[ 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.5 T3 {  S& Q" e# F# M) U, L9 u2 _

$ C1 x4 C' h& E0 r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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