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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:
  n; ]- |4 Q( `$ {! Hto do-business
0 L$ P4 ^' [" [0 O! E' I* k rt random 360( o0 g3 a0 b4 l+ p! L% x
fd 1
+ a  R8 W- R, O& |8 \5 G& H# o ifelse(other turtles-here != nobody)[; E, f7 p/ Z; s4 {4 O2 d
   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.
% F" f. j9 e, [- P' m   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    * ^' x4 S+ V+ M
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer+ E( E4 m% j3 j7 J6 A, c: r
   set [trade-record-one-len] of self length [trade-record-one] of self2 U1 o; E$ Z& i
   set trade-record-current( list (timer) (random money-upper-limit))) o% H. y7 o$ f
, o' M$ w$ g" {' x% K
问题的提示如下:
. p  t- D) G0 ~; [, |! i' u
' F  I- W, m& Qerror while turtle 50 running OF in procedure DO-BUSINESS
6 a: f9 M3 \* k4 r) n3 X( h$ w  called by procedure GO
; ^3 f. }8 B" [, ]! M8 H9 g) n! FOF expected input to be a turtle agentset or turtle but got NOBODY instead., T  g4 D- l# Y8 N9 v3 P  O' }
(halted running of go)3 r. b) Z& s; ]  v6 {9 X
5 b4 H1 O0 K2 V2 }" e
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~~
8 q1 g- R* t* N, R* l/ F) {+ Y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
6 c, J* a- f9 H5 R, V; C  oglobals[7 O* {  q$ z5 A- e) o7 _& |
xmax
0 L; Q0 |- r9 A" c( Y0 Lymax& R$ I$ W7 W( _2 h' c, b$ u
global-reputation-list
1 b) p  h  v8 J5 b! d+ n7 g5 e1 U, }4 {
;;
每一个turtle的全局声誉都存在此LIST) _' t1 G5 X  ^# J+ j0 o) X
credibility-list
! I4 m) p( s5 v3 Q;;
每一个turtle的评价可信度8 }6 N& y$ v+ _, M5 Z6 M* U) G' j, f
honest-service
, ]9 V, @/ T+ ~' uunhonest-service
  M! U7 q! f8 g9 B, X+ Ioscillation
7 l% t' h- ]! l! W$ N( g4 S6 |rand-dynamic, Y% [! P9 z- R/ F/ X1 J: K) L
]9 b8 F- Z* F; l5 S
  d  ~4 v" S% v! x* S# O% q
turtles-own[
  R4 c! \- r& Q. ]trade-record-all7 x3 M6 v1 u0 L$ M& |
;;a list of lists,
trade-record-one组成
/ `% r. m; `' y# O* r9 ktrade-record-one
/ n9 S  h0 M# L# M;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
/ ~3 g: _6 J0 Z( J- `& Y) q( Q' Z& F, @$ K8 @0 X
;;[
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]]; h  `+ A2 [. x) z% ^# y- {
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
; G: _: g. e1 l- ?3 ?$ i8 Ocredibility-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
2 D, G. B# Q. T* h; qneighbor-total
4 \4 Z% D2 t# X. ^9 S;;
记录该turtle的邻居节点的数目
( ?$ R3 ~( M9 R3 j' \9 Qtrade-time
9 C1 Q, u# k1 E; l;;
当前发生交易的turtle的交易时间+ ]8 r% @( V  V$ Z: O
appraise-give( C7 p9 I) [3 n1 `
;;
当前发生交易时给出的评价
6 c# U" v$ @7 w, w4 [  q8 P  Rappraise-receive  P1 W6 R9 X' f6 `* s8 Z6 i
;;
当前发生交易时收到的评价9 x7 }8 T8 Y3 S9 w+ j9 r) U2 V
appraise-time
0 |. K+ E# ^7 [5 M/ [9 P;;
当前发生交易时的评价时间. N3 B# v$ x2 L# j/ ]
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
) j2 |) x0 L0 v1 Q. Q% s) ytrade-times-total
8 }, u$ W8 `0 o  O- z;;
与当前turtle的交易总次数0 @, h0 }0 ^* B
trade-money-total
+ k- k4 {; T" z;;
与当前turtle的交易总金额
( ~, y# U# J  J! r  clocal-reputation
2 f3 W* N1 V0 r, S- F; s) yglobal-reputation
$ k' k6 ]  u9 }" u: H8 wcredibility+ K2 p- |8 r# g8 _* ?
;;
评价可信度,每次交易后都需要更新
, }7 F, k- h+ R1 `" b- }5 scredibility-all
/ @+ Y( L  E$ c$ E: V: C& o;;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
9 M. B3 w$ x% P. F4 k7 z# P
7 u, {# K+ @* e3 `0 c7 d% y) a4 V;;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0.55 f3 ]: ]5 P7 ]" {
credibility-one
7 B+ s$ y- \4 q8 M;;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people8 d; N9 Q  @: z. d
global-proportion( Z5 O8 W% N- n, ?# G- Y
customer
" U2 ~0 {- M% o0 l7 K! l8 s' k* Rcustomer-no
& d3 I7 B+ B% u9 M2 itrust-ok
, z7 Q+ x' e+ U! B- @$ G# ]trade-record-one-len;;trade-record-one的长度( n, S, O- G. S5 r  [# a: i
]* F7 E7 d2 c. e/ O' F

5 y+ i8 v, N6 Z: d;;setup procedure
, U! [& ^& s2 `; A# t/ G
% R: i5 S  k. H$ x# e# O7 _4 ]to setup3 O, w  U* u! ^% c
" f  n3 X& g9 H# ?+ W
ca

; E0 }$ `1 X( S4 W
  o2 e# j2 i2 P; oinitialize-settings
% T0 v# o5 [, l# L1 H

0 ~1 V; {7 C' s- W  T+ b* `5 e, Pcrt people [setup-turtles]

8 n6 |; K( {# A: `( }4 A( \) e, B6 ]4 R. R" W4 L
reset-timer

) {; h1 Q' U! s# T7 L/ R" W" d" f8 P: W% J5 k
poll-class

2 p0 B% T1 n! H8 N; H7 \: q- A' O# T- O' @3 Y" \" y  h
setup-plots
( f5 b% u* ]( v6 r

9 s: K* k+ m" e- zdo-plots
1 j0 @7 t0 _% @7 A/ J# k& W3 K
end  m3 p! V' V: q2 K# {5 g

* G. ~( G/ e0 |5 A+ Wto initialize-settings+ D" `* g4 Y) g2 i

  i3 W& z6 `1 a& n: p- ~set global-reputation-list []
& j2 E# z  U; J4 s
1 X5 J2 X. x+ b, Q' y8 r
set credibility-list n-values people [0.5]
$ r) K: Z8 l) g4 X  [

1 t# D6 Q' e- L# e# Y9 tset honest-service 0
. z8 j# T* t9 |

* G* g% @1 }( _9 o4 Y1 |set unhonest-service 0
7 @7 h8 e: L) h4 a' H

; `" o; `9 M& m% Nset oscillation 0

' g7 R5 ]& J5 b2 ^1 N0 V
6 B% G: j( ^6 f5 o$ F3 dset rand-dynamic 0
& I* w/ h) l3 Z: C
end$ u  L# Z: n1 q. @$ T9 f! W
0 Q& _# H  ^/ J. E
to setup-turtles % q' W1 `% q% T% k1 ]# m
set shape "person"
. ]9 _& z& e" A5 e5 a3 osetxy random-xcor random-ycor
, K. l: p! s- h6 o' vset trade-record-one []0 v4 j. E5 [/ N  @3 e& }

) p( c% ~3 q- }  Fset trade-record-all n-values people [(list (? + 1) 0 0)]
8 @7 U# {8 m1 v* W
2 |0 g0 f9 ^1 V: f2 p
set trade-record-current []
' N+ O+ ^. G( k/ ~set credibility-receive []8 v! D+ Z6 @* c4 x' i
set local-reputation 0.5
8 G* M2 d$ _2 j9 r+ L' g% Pset neighbor-total 0' o1 s" K# M' _+ r  l
set trade-times-total 0" c" s# \* X. [" X6 Y- e' t9 N
set trade-money-total 0: T( s  v+ }) n, D8 h4 e  \+ l* k
set customer nobody
& w* B; L$ _" n* O' uset credibility-all n-values people [creat-credibility]
; n' J6 B. c. H; Y* u; _! aset credibility n-values people [-1]% Q. ]. T/ i6 W5 n* r
get-color
( Z' _8 m+ z! \1 q

: P; J: e6 ]9 p# nend
$ A: \2 E4 s& ^* K! A& X5 [% D
+ ?# p' ]8 X1 @  Bto-report creat-credibility
, }& Q1 [' s9 y" M( h2 a9 areport n-values people [0.5]! E: B  ]8 R; D' a
end: M2 b4 ?& ?8 U, E; Q

) ~7 j8 f( V* x/ M3 Z4 xto setup-plots
6 X- J+ g3 l' }; O2 ?
* ]! D$ T& R: ]* r) u; w: g9 _set xmax 30

8 B" u4 I* E. q$ T4 j6 b& M, l6 W  T( V; H: y6 M" `  w' o* c
set ymax 1.0

0 F* j% a: i9 D8 y$ h. O9 Q$ z, I, [7 F. i% N
clear-all-plots
8 Q. N4 {7 n# i$ c* p! }
7 r: P$ O: K) I+ q: C& W
setup-plot1

( ^  |, a+ h7 o! R; t) D8 E/ t! k8 h' u2 @; U: v- G
setup-plot2

  f8 P! ^! M# V; H4 J# C9 \# V' ?0 S# Z- J& x* U
setup-plot3
" t& ^  u( f5 i" L3 }7 c
end
' D" W  M: Q" Y  U  T
4 K+ K% B* z: X" K3 r;;run time procedures# v% g9 D, x9 K
" c8 d5 n, y- u8 z! i
to go
' q' L1 g/ [) o& r: \: `4 e+ X) R/ y" f% q( S
ask turtles [do-business]
- p. r; L6 N* v* N; c9 u: }
end
5 {4 R: i7 S, [2 X, H" [; y# Q  G9 N
to do-business ; n; O$ b5 f$ T1 G4 l, X5 f4 O" @. o
+ y2 S6 i' O  @* X; b* I/ Y/ Q

! W& _" X6 m1 W# irt random 360

( T- Q1 V, d; g; x- Y1 a2 S2 r
( M0 L1 N+ a4 m6 B! x( mfd 1
2 f6 i' O# {5 }6 f7 F
: C( m# {* m# b$ d4 C. I! Y
ifelse(other turtles-here != nobody)[

1 w  U* W9 H; S6 O9 ~! `0 m8 G7 V/ |
set customer one-of other turtles-here
5 o1 o3 y+ f4 R* A% P$ X

& I* |! R8 m2 s" A' `;; set [customer] of customer myself

& S0 g( I! m4 U9 ?4 g  O
1 _  @5 l# a# G5 Bset [trade-record-one] of self item (([who] of customer) - 1). P* c3 m' u: O/ E( q
[trade-record-all]of self! Y( T* g" w) ?4 k
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

: B0 D6 ?' G- V$ h: ^$ O4 _# |) R+ ^7 t
set [trade-record-one] of customer item (([who] of self) - 1)
# {1 Y  I5 B" u1 i[trade-record-all]of customer

3 a/ E" E4 |; H# K$ g2 K+ m4 w- M  h9 T$ y# u3 K4 U
set [trade-record-one-len] of self length [trade-record-one] of self
/ l# x8 Q2 _  ]
7 B% E( w  F$ o1 s1 `2 U
set trade-record-current( list (timer) (random money-upper-limit))
; ^( o2 u( n8 W! o6 h0 r
9 Q6 M) A2 m  o& F
ask self [do-trust]
: I, x" `, [; j+ B8 X;;
先求ij的信任度
. S' P& K3 c0 W) n, y( D
6 i8 Y6 }- H7 V/ Qif ([trust-ok] of self)
! G! Q) S9 U9 M  D# Y;;
根据ij的信任度来决定是否与j进行交易[0 X9 I3 j- {3 A- ?
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself9 M, `: M9 q8 q2 p+ h/ M4 {

" l( C5 n9 V' x[
/ z. L1 \4 ^( c( V2 ]
: E- b" _9 k3 Q# C
do-trade
& o( z& s& `) K1 X9 F/ E
- v6 P1 ^' e4 z1 j: B. P
update-credibility-ijl

; s- R3 \; s6 g) M* c6 m: o, s1 h4 K3 Q  L+ s/ k1 d9 x
update-credibility-list
1 Q) @+ u+ m4 `3 k% _+ `
) l2 e1 v) n' g/ s) Z% g3 Y

( f* P% U/ @9 d4 H" Fupdate-global-reputation-list

* }5 \# I4 U# ?" f
5 r( u2 ^! x5 }1 v4 p7 m5 Qpoll-class

" E$ Q2 s7 \" l  s/ o8 w8 {, O# H1 v7 w( m, j
get-color

. V0 ^5 j4 q0 J) Z  R8 @! p8 @' u8 C+ ?
]]
) J7 d3 w% T# U
; y, C: s& z: w1 T# t) X6 E3 F;;
如果所得的信任度满足条件,则进行交易
0 C* y! R) e- W& R; L. p; q: `7 ?% c- L/ }; Q
[

9 h  X* D: U9 {0 ]5 p7 p+ b+ l5 V- X, A3 g; G6 F
rt random 360

: o1 w; z7 |1 k4 B  K3 U) J7 d! |2 t: @
fd 1
" J! i% \2 N. B5 q* r: V
4 @; [5 O1 x; R
]

: G/ s  C3 v+ e* ]6 K) K" y" }+ g4 v
end

. q6 U$ n1 z7 @5 e7 ?/ @
: v; W/ ~/ u2 @8 {$ r! Lto do-trust - C" ^! P9 k: i6 x' h5 X8 f
set trust-ok False
1 r* T3 g/ s9 q$ d; m! L0 m, h7 T7 N9 W" p4 ?. V2 C2 B' c0 x8 a

: S9 p$ A0 n1 d: A* Zlet max-trade-times 0
% ?( }4 |) I8 c' T' wforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]3 _; J4 \7 |$ f; T. k( s9 L. K
let max-trade-money 07 S6 d. h" {" |! d- M( j! p
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
6 V) e6 x$ X  a8 clet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
+ y5 e( Y- I9 }3 b+ {# F. {8 ~
0 [  c3 d$ s; ?$ _+ s3 n

6 C7 o+ w( K) J; z4 O0 Zget-global-proportion; @( P& D# O8 q3 B, n, V* b0 }. d
let trust-value
' @& S  I, d0 G9 `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)
, `& g" X8 R( V- G
if(trust-value > trade-trust-value)- Y0 p; H7 g  N  Z9 k- H& B5 v+ ]
[set trust-ok true]
+ a* }  x- |1 R& f: E* V+ L; ]8 e: [end
+ Q- ~  v+ f" V2 _' \' Z% O) u9 E
* Q, R0 n" n: m: z6 ]9 }* Nto get-global-proportion
0 \; J. o! R& n  d8 V9 Sifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
5 b9 v# R7 O. c1 ]4 v6 Y" ^[set global-proportion 0]
$ ~7 _, V0 M+ c' r  `; L3 K. U[let i 0
& s0 F4 \! m* n; i3 ?$ alet sum-money 0% u# T( J/ j( A9 v' P
while[ i < people]
$ g4 ]4 |7 |  g% `7 c9 J/ o7 y4 j/ a[2 O7 Q# {) n) X
if( length (item i
2 e( K3 ~$ p* m3 N' S[trade-record-all] of customer) > 3 )

( p+ j+ F5 ~2 q[6 I* s( m6 `9 k8 b9 c- G6 x7 e2 c
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))' ?4 l/ t1 Z" w8 W
]7 H. M, q7 T7 Y# H8 I% D
]
/ k2 x- t* `1 m8 w7 E: _$ }let j 08 h% h& @3 b4 C0 h6 j$ d
let note 0
: k7 }0 \  a) l4 U3 swhile[ j < people]0 g! X/ l  a0 M! P# `. K3 P# t. [
[% O2 b; K- s$ a- U/ K8 }
if( length (item i
5 \% ~/ j- |6 ?/ s7 x! b[trade-record-all] of customer) > 3 )
- k& T9 H! h" _9 `# B
[
% g  G$ U/ K3 X3 F% y4 T1 s. xifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
1 q9 }( @6 w+ t7 X[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]! a1 b6 W$ U/ @9 D
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
: F6 E% q6 c# e1 h+ s]
- z6 I1 f0 p: w! D- P; O7 c6 e]
8 A  P  E7 ~" Pset global-proportion note
3 _/ H9 ~4 G7 k; B: N; U8 D, I]
, R/ q% y& a9 F( J) v1 p6 r6 p# a7 qend
- U& S! j+ w, O& ]  w- I1 k
+ h- [$ L" p7 l9 \1 Jto do-trade
% M. W$ M$ _# N* l6 [6 C& };;
这个过程实际上是给双方作出评价的过程
; q5 X. b5 I5 x: Iset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
0 G! r3 F" b" h6 W/ b0 Aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
' D: f5 F, f$ o! Y; U( C+ _set trade-record-current lput(timer) trade-record-current
9 ?1 R' W+ r. u) |! m4 q;;
评价时间
% J" m) }3 E. S  w. c- I2 ^ask myself [
( N, Z7 d; k, C; Rupdate-local-reputation
) @% r1 G9 ~# {$ e$ D; [  U/ Nset trade-record-current lput([local-reputation] of myself) trade-record-current
! i6 h* ^) l9 K9 ^2 L]8 u! g2 `" k8 V+ N
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
* r; H( V2 A) c9 k;;
将此次交易的记录加入到trade-record-one7 a! Y* D1 K% `
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)6 p2 g  u5 z$ A* `* r2 y% @
let note (item 2 trade-record-current ): p+ j( H& C- p9 |/ L5 @5 Y
set trade-record-current# y4 L; V- }- P4 {: u2 V8 K' M
(replace-item 2 trade-record-current (item 3 trade-record-current))
' F# E  N# l& l1 o9 J
set trade-record-current
- N: h" Y' T0 y/ N4 U! b! U# e(replace-item 3 trade-record-current note). z# p, O. Y8 |
: j% m- k$ T- {) j( g

# l4 F4 U8 T! R6 w8 f* I0 Uask customer [/ |1 z- D! a7 A
update-local-reputation- n( z' B, y# y; z
set trade-record-current& g  z3 _( ]5 @
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
8 o# m$ p& x/ H5 Q
]# C$ Y; I, B9 s
+ c8 }; ^8 T6 X0 ?8 X8 l$ C

% I! }# l% c0 m* gset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer+ p4 r# ^# B2 O

9 w0 r# r7 f+ h# ~5 O( H+ n/ nset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
  b4 d, n- T& H$ o5 b;;
将此次交易的记录加入到customertrade-record-all3 S6 z, v4 Y5 x2 V) o, D
end& C9 \* P# A0 w0 ^- \5 ?

' o6 \0 P, ?; F8 J9 \: Pto update-local-reputation
) c) D  K* W1 ~' w+ m, E. U) ~6 s" G/ xset [trade-record-one-len] of myself length [trade-record-one] of myself
6 @  X) e3 v$ E: j2 Y
9 {2 B2 `4 q3 j3 i/ w: z
  a1 Z& [" Y/ Q1 D7 M& Y;;if [trade-record-one-len] of myself > 3
, C6 c& X4 F: E
update-neighbor-total
$ H/ c) r, v# H;;
更新邻居节点的数目,在此进行4 G2 l' h% k; f1 Y
let i 3
7 ^" e$ d8 Y: ~, xlet sum-time 0$ O1 @! a7 p" f+ Q: u8 c9 O
while[i < [trade-record-one-len] of myself]' `1 \$ C2 w# o# u! C3 G
[
' ~. _, G3 ?/ ~4 cset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
0 b- u; f4 n  |# K" d4 Iset i
' K$ g* N2 J& s/ F' c- C0 L( i + 1)

6 u2 R0 ?2 R1 I" J% I9 q]
. h+ D# ?5 L# i$ R4 Vlet j 3
4 V* _" P. N1 Slet sum-money 0
5 M* O0 E: ~+ Y$ Lwhile[j < [trade-record-one-len] of myself]
3 r3 w" J5 S7 q9 T[" C/ p  h' j3 _/ Q9 }3 p
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)( G! b0 l3 H7 X9 C! ^: H
set j
5 M. j  a7 f  B8 J: R2 i5 }3 _- Z" S. Q( j + 1)
; }! Z6 Z3 M: m6 Y
]
4 b$ z4 @/ m2 H$ t, S! Llet k 3) j2 q/ b* Q3 p" Z
let power 0
, g8 [- p2 [* flet local 0
! k+ j- m& q0 t; t9 m+ q- X4 N! \while [k <[trade-record-one-len] of myself]
/ r% P; b( p2 @[% C7 q4 t/ T- ]+ m
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) 5 b( y7 ?) U% x7 L. M+ K5 E/ o
set k (k + 1)
7 y+ k7 c0 r0 P# B, A]( A+ E8 F9 l! u" m6 r. d
set [local-reputation] of myself (local)7 `2 D$ M) E2 l- z
end) t/ S& m3 F$ y4 E! ?
: }+ o& |6 W/ C% V) J' ^
to update-neighbor-total! f3 v' G# r, a. s
2 m. G% _/ R1 Q- U3 B
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]2 r" x/ B! {3 a
% ]. j0 G: B; g" }" D; R
/ b& N" O1 P; t' A* ^
end( a* O/ G( e1 W6 b/ m
1 Z! J  d- t* F! u. c) q' w: O
to update-credibility-ijl
7 e9 Q5 u. y; b9 C! i- H
" g& ]4 M8 k2 p# m: O;;
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。6 G- A. D# G( n) [" [8 ]
let l 0
9 I. ]& d* x! h: }" ]; X$ A; j; [while[ l < people ]
) O8 b& q; Y) q# L) _7 i" A0 x+ A;;
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0 X6 B4 V/ ~* r- N' V- A
[
4 ~) z% G; A: x( Mlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)3 l: F! K7 z% \0 j' E, `
if (trade-record-one-j-l-len > 3)
8 r  l8 i5 f5 t4 E) L5 a[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one9 B' Q5 \2 M2 L6 {  D6 {
let i 3* a2 B. J  t# ]5 ?" B/ S
let sum-time 0& J% N* j% {7 m0 \
while[i < trade-record-one-len]
6 g* M! S8 T8 [  @( w: i5 b[
& t/ }5 J7 I8 V1 j. rset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
4 w$ P! v9 l* P9 Uset i' I& }/ q4 G( b3 |- K9 P5 x
( i + 1)
* Q  X% L; q+ y0 k* o" F: I. k& w
]- f& f0 C. F9 j0 P  c
let credibility-i-j-l 0. V2 I) o5 p! `
;;i
评价(jjl的评价)
4 K0 i* Y6 ?$ H3 _3 H( x: Llet j 3
, u1 r. U9 q3 `- u( v" Elet k 45 J5 u: ~; F! _! M& m7 q5 S
while[j < trade-record-one-len]
' s0 F; y/ a6 F4 `[- r: T! p% y, {1 y
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
" l, p: z& I5 l/ I; c* S3 r( X6 Cset 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 r5 e  b; A) Hset j
- y4 ]5 _# R$ d- G- S( j + 1)

. z. S7 P. [9 C5 B" J# X- f* A]
! }' ~1 j0 H3 n5 O9 p6 a. g% bset [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 ))
! |+ e6 D. k- h7 t8 E# i! r- N( p7 m& ~, O7 Q; Q/ \/ n2 f* z( \3 w+ R

2 E  ]9 W: P( H0 ~* A/ ilet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
0 c: y. O; M, o9 g$ s' W;;
及时更新il的评价质量的评价, j: n+ J, ^+ u% C
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
0 E, E" u* ~7 Z3 U/ I, Oset l (l + 1)% K6 ~0 ^# w- t, ]5 R( i; T
]. ~& [4 n6 `2 f0 h1 b
end
( v4 C6 w! R8 S4 P! f' ?5 l' C- W" Z$ J1 u" {
to update-credibility-list
* }7 N* E( V* ]/ dlet i 0
$ C0 ?3 H! }, E  u/ T0 }5 P( }9 ~while[i < people]0 q8 j: T1 ~& g: U! _6 k
[
; y6 f3 C/ h$ e' c" }8 B9 |# w0 r( Ylet j 06 L6 W& D2 n' }0 i* [3 `
let note 0- o5 ~( C! P* g3 h' _3 \8 M
let k 0
- s" K) ^. j$ |" S0 d;;
计作出过评价的邻居节点的数目1 |9 j% O/ u4 F3 m
while[j < people]
# P# e2 Q6 F  g1 i% ~- s1 t9 Y8 O[
5 t# b* b5 Y5 d5 S* r! I8 ~if (item j( [credibility] of turtle (i + 1)) != -1); L' E* N$ V3 }* |6 K& U
;;
判断是否给本turtle的评价质量做出过评价的节点
" g, Z; z, o: J" U8 G[set note (note + item j ([credibility]of turtle (i + 1))), G0 v' F3 O; B' s/ T
;;*(exp (-(people - 2)))/(people - 2))]
) ?5 T0 E: H9 z6 o" b8 o
set k (k + 1)
0 p3 s. r. v2 V6 j. r* O]' U- J- M6 y3 F
set j (j + 1)
+ J2 b9 V! N* J( Y; n- [9 s]2 N8 `& y, q3 L3 y: Y7 m# {9 S
set note (note *(exp (- (1 / k)))/ k)
- [  ?4 n9 ^1 b  X/ G( Y; Rset credibility-list (replace-item i credibility-list note)
# U6 ~* _  w3 |0 {set i (i + 1)) {5 E* \1 Z" a: ^4 A: e
]  ]) o1 v/ O8 U/ I
end$ `9 }6 b& S! u& a8 m  N
1 i6 b3 V/ O  D4 v3 a
to update-global-reputation-list
$ N$ v3 M- {* S. j' ~let j 0
- j9 L' r" o' y% _# Wwhile[j < people]
; H% h7 l; i  D& O0 d# s$ y: e* B& k[+ J, \: r- J7 `6 _  ]
let new 0+ Z' H  ~/ `- K) B
;;
暂存新的一个全局声誉
# a/ e$ W4 E1 W- Q. e. Mlet i 01 c$ g: j( E3 i( t4 F) A- E6 \- C# `
let sum-money 0
6 W% v% a/ F! {let credibility-money 0
& t8 L' f9 ^2 ]# u3 Dwhile [i < people]
0 C$ ]5 g$ f4 c4 i) G[
6 w7 R: W, L4 n: f8 y: U- r3 `set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))): t0 m& q% x! K( ^& Q! V% d' j
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
# K% H% h3 i- kset i (i + 1)3 m0 X  c( L3 Y4 a+ e8 u* J4 ~
]
' z2 h1 D4 E0 Q$ N$ F( B7 Xlet k 0! W$ G/ a2 J& i& h' S
let new1 0
: o6 M+ n( z/ Nwhile [k < people]( a/ D" U0 O4 e  M! ^
[& X8 l& W) k0 h
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)
% ^. {" r5 Z5 Q1 D, M, Fset k (k + 1)
# [1 ]3 b: L- X0 n; B# X]0 }+ ~9 {- n) S* L8 `
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) & U- A' _" p+ S7 i; h
set global-reputation-list (replace-item j global-reputation-list new)
, x+ W  ?* U0 A9 Y+ O/ aset j (j + 1)
7 N6 N! ^$ N/ T, z7 x1 ~/ g0 C5 H]
+ y. n% ?3 q+ \9 m3 }: Bend1 T: s' M& e2 f! K; ~
6 ?# n& `  ]. f- D$ R  I
: q" c% }0 F0 U3 h. g. E, z8 P
9 y& F8 y$ s  E" V" z+ J
to get-color7 D. J: o2 R. ^2 p
! W8 u) A# x' B" y
set color blue

' [: L- W5 e# T2 i) u  b7 }end
" m  h+ ?) l8 Z. e2 z" N+ ]5 u4 _$ N2 A
, |4 ]; r& P7 g9 S$ t6 h$ T5 Xto poll-class
/ y* W& p5 p/ Yend
7 I' u  q  n9 `' b9 C
, {" T/ G& c9 h5 h) v" ~2 R4 yto setup-plot1
: J) n5 P; F  D) H$ u7 A2 p' O& v: X7 d! R5 r
set-current-plot "Trends-of-Local-reputation"

1 D  v" U* a6 M# n+ |* R* D; W" g4 \9 Y4 `8 K
set-plot-x-range 0 xmax

: H- _7 V5 d% D& j/ d7 A+ N  M9 }$ ^2 }, m# ^- v( B9 ]
set-plot-y-range 0.0 ymax
* A- S. T2 @4 s* ?; v* ^* Y# n
end
  v' I$ w$ a, y4 R# P/ e+ O  a' [; j# m2 a+ G3 W
to setup-plot2
* D) E# X+ m1 o+ D' Z, g: a/ x  _, x( x0 t/ {- K/ y1 J
set-current-plot "Trends-of-global-reputation"
8 [$ ]" j& \5 h9 ?. \: ]+ ?

: G3 o6 g# R6 N, _3 kset-plot-x-range 0 xmax

  J  `5 }* S, V  S
+ j- P. e/ Q. aset-plot-y-range 0.0 ymax

  G: y/ c8 Y1 Y5 m) Nend, S) Z$ c! T0 u0 {. M
3 d  U3 Q3 ]( w; k
to setup-plot3
% ~" d$ F( ]4 F) r$ s  G3 L( D  A, k1 q9 N& B, f
set-current-plot "Trends-of-credibility"
" I7 n& G0 S! ~2 o" w: X
9 M8 H6 H8 o" |+ _$ N& a1 I9 B
set-plot-x-range 0 xmax
! n- ?0 Z% \  B# J8 P; @/ K1 M" O1 [
5 w9 b- t& D0 x
set-plot-y-range 0.0 ymax

  @6 P' i! Z/ i: vend. P* V9 _- G' x% \! T: h( d
( q& _. q4 I  p* I' _! B3 H2 K" N
to do-plots- E8 @. s5 `6 A! ], T
set-current-plot "Trends-of-Local-reputation"4 z9 J! w) C+ K
set-current-plot-pen "Honest service"$ U- a0 W: N/ x$ {2 ~, n5 F
end
* l. F- e5 H/ {! r! m9 ]$ m; X4 V# M3 V0 R: q8 o# C" E
[ 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./ k3 X$ S: p" x( k) ?! u
6 y% m. ?6 I: Z: [; {: N  [
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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