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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:
" j2 H5 X3 M1 Vto do-business
% v( t3 {- I. Y: [ rt random 360
( d  u0 `' t8 Q+ c/ J. D fd 1
6 |" s  K8 A3 h: ` ifelse(other turtles-here != nobody)[
7 Y: c5 D8 a" ]: Q   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.
2 O  ?( o& ~5 j   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    4 W% K+ U6 i, a4 N& C: b0 V0 _
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
8 W9 {! V9 N2 h& `' r   set [trade-record-one-len] of self length [trade-record-one] of self
) X& K* m" `9 @# s7 ?/ m   set trade-record-current( list (timer) (random money-upper-limit)); G; i- s4 O# G0 M7 j: B
  Y3 `; w& `, _* u0 p) {, M
问题的提示如下:
# F' P3 F( c& Z1 }9 E  i, M8 q( Q( r% [1 }
error while turtle 50 running OF in procedure DO-BUSINESS7 |& g  t! r3 u# |' f6 e( l" X
  called by procedure GO+ `: Y) R# u! J  s  R+ J
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
; n# I" l3 c: z& X; g/ {+ f: O
(halted running of go)
3 ~7 @! a9 D7 f; S3 d2 Y4 l5 {3 w  H6 m: n. K
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~~# {0 \. l- z# M' _. 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
0 p% h- O: d5 o$ q7 M+ W5 g" fglobals[3 {7 q" a( Z4 s8 `( p9 e) J; s+ g
xmax# f2 M3 _1 F7 u9 U! ?& V! }
ymax& w# h. P7 w+ B& C1 C
global-reputation-list+ G! {/ Z2 c7 t* O% X

: G% D5 o8 ]. e% r# s9 K0 |5 _0 V. K;;
每一个turtle的全局声誉都存在此LIST
3 k- f* J" |' c, I3 I* E5 S; Vcredibility-list( \' r% Z: Q1 V. V
;;
每一个turtle的评价可信度! ^) ~( F" Y0 ]* f3 ~
honest-service
* O& h6 ?5 A2 K8 \3 l3 ]( ]+ Junhonest-service- _& q& G+ r2 j6 j4 _
oscillation
5 q! a) E" y: x$ Drand-dynamic
# a# n; E1 j1 ~* o, H5 K]
0 }! w! o8 M* _* w: G! g2 v; v& F- r4 W  T1 @
turtles-own[
2 \+ F  q  O% v3 Htrade-record-all
5 d$ Q" Q1 N. }/ \6 H$ E( \;;a list of lists,
trade-record-one组成
4 J6 z# H# d7 B2 Ptrade-record-one
# q9 @9 a1 Q4 F. @. I9 a;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录4 @9 t9 }* S/ `

7 v; ^- t7 W+ `; F2 V, K; y;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]- _+ N4 W+ H; h: n2 A
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]' F' g: I6 d/ U  S$ D( \7 Y
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list4 d) M6 P6 }0 \1 z: W
neighbor-total6 H% R" l! H$ `9 C) B
;;
记录该turtle的邻居节点的数目
! D" [2 v1 C; X2 btrade-time/ I- R- E* S+ t! |6 D2 C; v
;;
当前发生交易的turtle的交易时间: R. d8 ]2 }$ |2 a1 y
appraise-give/ t4 R2 ^/ t8 r4 O$ a
;;
当前发生交易时给出的评价$ \: E6 N8 {0 E. R) J9 d6 x" k7 n$ r' V
appraise-receive
9 c! Z9 Y1 |& B- d;;
当前发生交易时收到的评价
! C+ \# L9 F) y8 B6 Q$ o% J1 Wappraise-time8 y( O" q/ i7 ^
;;
当前发生交易时的评价时间
$ F6 O+ H6 W* \; P+ f4 t" Nlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉8 |1 C2 f6 T* O5 ~: Z0 L
trade-times-total9 k% z  s# U7 ?. |% T; r" M4 F
;;
与当前turtle的交易总次数
; j) U0 i8 C# j/ etrade-money-total
! V6 m2 y% O2 G5 ^* J, o% a;;
与当前turtle的交易总金额
( J$ d# H4 D" glocal-reputation2 u2 H$ h2 g3 K* P4 q' X9 J
global-reputation
5 D5 ^) \& g. c; X( Qcredibility$ w$ L0 L3 z9 l3 _
;;
评价可信度,每次交易后都需要更新+ |( N( T+ z2 v. W' v, J# l
credibility-all2 H/ |$ f8 H8 S/ M( u/ _3 b3 R2 x
;;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
% W0 @6 _: z# L# n: M: H
$ K2 B2 t  F6 a9 H* A: l6 T  E/ X;;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, D2 c% w# }! J& T8 a5 C
credibility-one& d" {/ F1 o* l4 Y
;;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
6 @0 |/ d* W5 d2 w+ Xglobal-proportion5 j; l, j5 [+ `+ z+ |; I$ C5 \) ~
customer5 e# o2 Y) _' D  h3 W
customer-no8 X- P: w% ~3 I( I
trust-ok
- v) C2 e, ~6 I+ N  w6 a3 F) gtrade-record-one-len;;trade-record-one的长度
# B' L" L" s( O]9 }, C' Q& f; L& r6 i9 q

1 p/ Y6 ~, G/ ?  ^; N" C: _;;setup procedure
; s9 b2 h6 L7 d/ F% G/ ^
+ a( t, X  K' k$ R* r7 v3 G' fto setup
( {/ |4 `- o8 }4 ]
* }0 O5 z8 \* M7 Mca
9 {# E, C: T. y( M
7 \, T1 A+ b' U- }
initialize-settings
0 f  v' }; W: }* D+ J" R
8 q: [) V6 S- p
crt people [setup-turtles]

" W4 y+ x& K0 Q; ]7 ?0 r
! t! H7 n8 o* X3 [4 ^reset-timer

0 L5 ?: b& y3 S3 k7 c& T
& d5 ]: F3 x) {% Wpoll-class
/ E7 p* v! q3 d1 N
( I! M% J  j, V. R5 b) Q
setup-plots

2 P5 ?. f; T3 }# O0 \- B  |
/ R% P, v* j8 H! M* W/ V3 Pdo-plots

5 |* C3 r3 J: ^2 j" jend6 \* I0 s- r8 y& r1 C3 K) U/ D/ W% ^
+ W" K1 c$ v+ Q; J$ w6 o- y8 W
to initialize-settings
; K2 e2 [  H! ?" U0 m- G9 b; U6 F) E+ v8 O& }- C3 m5 v, k
set global-reputation-list []

8 l$ ~1 Q* l( a) J! H) o) u  v& P5 u  l0 g! b: B/ q: P3 r# b% x
set credibility-list n-values people [0.5]
; F) X$ ?% b6 m  P/ [

$ c  _6 A. |! Q) a- ~9 N7 Sset honest-service 0

0 F/ J6 t3 {$ c3 b7 J8 n1 G% R
  i0 \# g6 w  G$ {  p$ i) Yset unhonest-service 0

, t. J4 j9 Z$ S+ ]4 K( d+ H9 O& a1 q) L! ]( K9 z8 D
set oscillation 0

. y( ]4 G/ }) `- k9 r% F; ?# F* s! B
set rand-dynamic 0
8 t' t' H. R: O% U
end; W3 R! e% Y, @- t

; j' ]2 |7 y  Z6 Dto setup-turtles $ D* b2 Q; ^. w
set shape "person"
# \4 S* }! _4 `0 Z# z5 X  r* usetxy random-xcor random-ycor
: m7 r& z7 h1 u* T6 U6 X0 rset trade-record-one []
: k$ k3 R4 K" x

$ A  z8 A. q9 w5 x9 E5 \set trade-record-all n-values people [(list (? + 1) 0 0)]
* X: Z8 g, v) ]2 n- U
2 ~$ V& v3 I" N) Y% W: ?
set trade-record-current []# f/ |* c4 ]8 B/ v4 t& g0 |" _
set credibility-receive []$ d% G8 L3 l8 i) o& ^
set local-reputation 0.5
+ Z  @+ T8 n- zset neighbor-total 0. S+ u, a7 D& \* @( \0 w
set trade-times-total 0: S2 a/ }" F0 Y* ?
set trade-money-total 0
7 P& x" z7 t# r3 c% @# P& z! G# Aset customer nobody1 z1 N: G/ Q) C
set credibility-all n-values people [creat-credibility]
8 M+ `# r' U. N# E) wset credibility n-values people [-1]
8 E' D/ r8 _2 S. v3 k0 X  z( Fget-color6 H0 e; z/ _  z; ]
: F4 C/ G3 V2 l# r  N% B
end; J9 F7 r6 T! m
6 V6 s; P$ U/ u
to-report creat-credibility
7 G* d5 f8 B) u' p2 X! c; kreport n-values people [0.5]7 I5 F0 N! P3 ~$ V% {. o
end
8 e% O+ O6 Y1 m1 s# m( J0 g1 d/ X1 V8 P8 Y: n# E
to setup-plots
6 r6 o' N$ s6 ]8 K8 V( @) l/ b# _+ [# }2 j5 n7 v2 `. F% N
set xmax 30
+ d% b2 X% ]: O$ |1 K9 T9 p0 y
2 ]$ g6 k  D9 L% q& z9 l
set ymax 1.0
, S4 B- A: r( X1 S: a; J- M! j9 @
" s) K9 C1 P2 P! @: b$ B% p& H
clear-all-plots
4 T' W$ s2 B; X; z
- q2 L6 a6 H2 h8 H
setup-plot1
0 a1 {/ @2 [5 `+ X/ C4 S
$ X, }1 f7 i6 f$ ]5 Q) \- N& q
setup-plot2

7 @' \: b* N2 P6 C2 ]/ J" b# j; v0 p$ E3 o6 }" [
setup-plot3

, {: B5 z8 J1 P8 y9 eend
5 g- K* [" |3 C! f
5 W5 D, K2 u4 a;;run time procedures
6 y" T9 L* X5 X1 T2 h6 _$ J) z+ p9 X% }( N2 Z( ~  T" s
to go  w, a; H. X( N/ V' ~6 t
# L; s3 Y/ b  ^' d0 u
ask turtles [do-business]

$ ?: o, A4 t6 `2 A: U5 J3 q6 l' Y! l; Iend
- ~& G) h. Z4 y" d0 h$ i2 Q1 Y* ]& Z6 E+ x
to do-business 5 `( ]1 y7 l1 {! E& l

% c' K: U2 U! ^: f: g7 E
6 N  y* V* Q+ ]2 Q# j4 ort random 360

+ C9 _$ [. _7 ^4 D$ E  N) W% E7 ?* F: ?
fd 1
- @$ P  t0 g! d: x, S
3 ~. Z! l! g) L; K# B$ X
ifelse(other turtles-here != nobody)[

# z6 a" N* ]! U3 q/ `5 _: z* R/ b5 o7 W
set customer one-of other turtles-here

, H# Y- h1 d0 U$ B- r
1 a  F/ ~) G: r0 r& [4 v9 X;; set [customer] of customer myself

1 J+ n/ H3 N, {- Z" A' b3 i0 A/ B7 v
( X  Y3 M! x) P; bset [trade-record-one] of self item (([who] of customer) - 1)  N9 z4 q  W% D) ]
[trade-record-all]of self
1 x& I+ F7 ?* \;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

6 l9 e0 P, Y3 J% X; ^9 U/ J* N2 B1 j  A$ b, z
set [trade-record-one] of customer item (([who] of self) - 1)
; f3 D! n3 f1 C, p. l[trade-record-all]of customer

2 ]6 `& [6 Q; f- ?9 T% G8 a5 ?8 }
set [trade-record-one-len] of self length [trade-record-one] of self

3 C4 e' t" [5 C8 K/ {8 ^
) W% l8 d$ K. z, K% ?4 [set trade-record-current( list (timer) (random money-upper-limit))

1 B" A$ g" ]$ `5 D& f
4 }9 x0 O8 X7 K# J5 f, \ask self [do-trust]. l# g: F0 [  g
;;
先求ij的信任度
# U# @# Y; s% Z5 C! \/ E+ H4 i6 [, ?1 C% ]2 c
if ([trust-ok] of self); u; A; a7 c" V/ v& D
;;
根据ij的信任度来决定是否与j进行交易[! ]: g* ~) T5 G# X* m7 M6 K- W0 V
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
7 W' D* p: x! s# v/ ~4 h* v+ ?- O2 ~& z
[
5 _3 p9 ]% B( h$ j4 S$ u  t) S

* z  s( B4 s( T& Ldo-trade
2 [6 d1 [& J9 N/ J  n

1 N1 R0 \$ m. H9 p5 ?update-credibility-ijl

8 b  |+ \0 U) }9 l6 q, C+ C* G' v, a. I, M3 @5 h6 c* R" a
update-credibility-list1 ~; \+ V# X" q! }! i+ o9 t
$ l6 e+ w1 g! B7 W9 h; k" W
6 ?2 [- T$ L# {
update-global-reputation-list

2 v) |* B; {8 M0 ]& \  J, ]9 w. |* s8 S* h! S+ v
poll-class

( Z1 M1 N0 o( t; G; p# n2 v4 i' @# y( E  K0 q
get-color

* O; H6 u2 r0 U9 A! F) T5 N3 l/ ~) `. l4 a9 u
]]
: p3 I' Y8 T* X! R! `% [3 G# H9 z: P- o  r" d/ Y  u
;;
如果所得的信任度满足条件,则进行交易
8 d7 @: @6 T: ~4 N! m
: {9 `/ R9 A' Z7 @$ u1 d& b[
& K3 M% w- W' b7 n2 n3 B
8 [+ n' H* ]+ o3 y3 x( l
rt random 360

* |% e$ b* m5 R  ~4 i: [( w" j* p8 l6 w: ^' O1 j+ \
fd 1
0 t1 I# _/ {" x6 o7 ~5 K- o* y
: K/ n' I& j& Z" N% k- `/ b) q! S
]

! c1 G" N* Y# M- m6 m0 \, p# h" s0 B- p* X. _: a, v
end

6 r- u! n. S, t. f# v
% ~& X2 N7 g! h/ Jto do-trust
" n7 Y  X# H/ p6 I7 a1 Y6 X5 @set trust-ok False" l- X2 r6 F6 m* I0 {( c
9 Y$ w& N8 U0 @" w  t
0 ]" Z" R" h) v# Y
let max-trade-times 0
( a# O8 w/ e/ _' D4 c8 z" oforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]  m( D+ R1 i+ r- S" E9 y3 d6 z/ R
let max-trade-money 0/ M) ]4 U5 Z/ F. i& m& x) Z
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
: F, l  D4 G: {2 `+ Y& d% tlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# w6 ^5 L- ?- V* p. \) D
2 G/ A( O0 X; ]5 R6 v3 U5 C

" f. L! j% B" z( \/ Yget-global-proportion
5 M- h* P) F0 z' E' d8 y" J( z$ qlet trust-value" S; [0 w3 p5 p* M* r1 A4 A
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)
; E5 @( N5 i9 G" R) v8 U
if(trust-value > trade-trust-value)
$ U1 \* F1 Y9 S% w4 u* ]7 @7 p[set trust-ok true]
* ^3 @+ v2 B$ c6 Aend+ h9 S1 c: e& r7 X; I3 H
# p0 q$ |8 D3 B  R1 @5 ]" ]! Q
to get-global-proportion. t' n! X* s' S* x; _; I; V
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)( y8 d/ x4 Q# d6 h( ?, f3 r( Y
[set global-proportion 0]
! j) ?! R2 s1 V[let i 0
/ H+ W; ?6 F2 V# H5 [& P& X" clet sum-money 07 t5 S1 ]3 X5 _# B* N( C
while[ i < people]0 x  Q- G( T2 [7 e' T, o8 d+ a
[  [9 d6 l) b" }" \) Q
if( length (item i
0 X' t  W- i  J[trade-record-all] of customer) > 3 )

* s- I: m/ Q" z0 C' W4 k5 Q[; d1 V- A7 s& ?; h3 m, ]
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
- k  _% g) k3 b8 t$ \& x]
# m+ r" m/ ^7 Z$ a* z6 ~3 [7 ]]
' m# n$ I# N! F$ m, Q/ U% Q% \; Wlet j 0
( b9 k, I2 T+ r, plet note 0
  F5 K8 p/ P- S+ S8 F! Q. Y" Twhile[ j < people]
( h8 H9 M- Z  o9 O% i/ C[6 X/ n5 [/ @% h
if( length (item i/ p/ U* T0 B& c. Y
[trade-record-all] of customer) > 3 )

5 n: h3 K$ `4 P% L[+ a1 W5 O+ C; o' @
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)$ L' E3 n2 e. G* ~% p$ L+ g3 d
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
  p( H5 g! u9 ?$ w: x7 E[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]% R( p  ~+ b9 |& u
]
( x- p& Q4 b$ [# i/ {* I. J% D]" H5 U: y& b1 S0 u4 I2 B& i2 o
set global-proportion note- O! [+ Z! j6 j6 N5 k
]
: i6 D: d$ a+ `& Eend
. `; A: L# f1 D$ ~1 w
* i/ E) B. \5 T4 Y! d' Nto do-trade0 |* C: Z- A9 D: k8 Z2 K
;;
这个过程实际上是给双方作出评价的过程. }$ }% u6 f4 }6 R6 A* r" h/ j
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价9 a5 Q8 K! J8 T+ v. c+ }6 ?
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价6 ~/ ]/ Q1 s# P2 S
set trade-record-current lput(timer) trade-record-current
. L% }( {# i, }/ @;;
评价时间
2 k3 B% g2 L- _  Gask myself [" J! }8 Z+ u; F# a
update-local-reputation
% w* J) ?: `! _9 |  Z  l! qset trade-record-current lput([local-reputation] of myself) trade-record-current
  F2 T, @' |: M$ z  |- M]4 X4 d- }7 l# }! {% V6 J. a
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself# A  g( |$ C* Y: z
;;
将此次交易的记录加入到trade-record-one
5 a$ X2 z1 M4 x3 ]set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself), g2 u* g) r+ f: ~  `
let note (item 2 trade-record-current )
9 f2 {" l5 _1 h# mset trade-record-current
" H! }# R. B* v4 }% Y(replace-item 2 trade-record-current (item 3 trade-record-current))
* c, n. Q7 F" `+ @9 W) K
set trade-record-current
5 m# C7 _. W) j(replace-item 3 trade-record-current note)7 m5 W. `3 {# I8 f! }5 O( w4 f
- ^- X# E! }: R$ K  x) d
) F2 m% }% L! q
ask customer [+ v" P( m& a" Y" B! d; s' m
update-local-reputation5 s6 D$ }' b& x. R
set trade-record-current
( V* Y" @4 R* |1 I* I4 x(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

5 r# o) {) ]1 g/ a]
2 W, G0 P, j: y+ y* y; t. s4 g+ G. T% k: ~' v" q% Y

2 ^: d' @% O4 k* z9 B* f) vset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer+ g! b6 g& i2 [* V, O0 n
- y' O" D% n' \% `% O( P* |. L
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
4 T, B% L0 M* t3 X7 g9 R# m;;
将此次交易的记录加入到customertrade-record-all  u; N; V3 N! N
end1 E& n; W  S- r  j- m# g  s
8 b7 s5 E$ }. w  w' S& P
to update-local-reputation3 U$ v; j  K4 ~; Q6 R% _
set [trade-record-one-len] of myself length [trade-record-one] of myself, d8 S. X2 @  h; @+ a

' r/ X& P6 w1 }$ T7 p
" Y' n: J- M5 s' t0 Q" ?( c9 ?;;if [trade-record-one-len] of myself > 3

9 S4 r& I, Z2 T0 W: c% z' K. B2 pupdate-neighbor-total: ?' u/ s* s3 W4 l. p
;;
更新邻居节点的数目,在此进行
! |! O7 y1 K' J) A! x* Q% Zlet i 3- |) l, y' U; D4 f  m* ?# }
let sum-time 0
; ?8 z# W% `/ g, o4 n9 Z  |while[i < [trade-record-one-len] of myself]
: ~2 H! Y  k0 B; U7 v" {" D, ?7 y2 R[7 Q4 k& _0 i3 K/ \' v5 o
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
" a( u0 u" A8 X7 Iset i4 d3 P! @: Z! {& D7 N
( i + 1)
6 N7 `! D9 d' J2 l
]/ g1 [( p, L$ c& N
let j 3; j8 d) n/ V# {# i( T
let sum-money 0- \; r% E& B; d
while[j < [trade-record-one-len] of myself]! V) q/ C; S! ~9 @! @- M; B
[
7 E3 Q. t: X+ `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)
9 h9 @% J, [) Cset j2 B; c8 d' |& U& `+ C
( j + 1)

( _% c  l* `* J" H]; V3 E1 ^! _$ k: E1 ?
let k 3% D1 T: p! \, W" @
let power 0
8 J+ R4 v) \* B" R1 jlet local 0& N$ E2 c0 k& k0 k8 V
while [k <[trade-record-one-len] of myself]; V% y* @! ~6 x) `. Z: b& s
[
1 L8 l  C, \4 d) s6 u) H) lset 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) . }3 T2 X) C$ h. [
set k (k + 1)
  [5 y  R/ U. @7 `$ R! M]
. g7 _3 [% w. T4 M1 z. d( M' uset [local-reputation] of myself (local)
' g3 R# v* }9 aend  [& a6 U: S+ c( K) Y( N3 T+ o1 u

3 N1 P6 Y* R" s) C# z( S% ^to update-neighbor-total
+ E/ r. Z3 H1 }2 G
' I- S3 C8 c2 `! Rif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]: f, A* h+ v, _6 ]' _6 I

+ B$ u' j, ^& n) F: ~
  |2 v$ z! Z5 I4 G3 P" ?
end& u  c3 a( V: s. ]1 c/ I( B
6 x# a5 k; k1 t! @5 c
to update-credibility-ijl + i& a, R: k# H- h* m  g% m
* A2 K+ M! C' A7 t
;;
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。0 n# j: w8 p1 Z8 Z
let l 0! s- P: W: H: u
while[ l < people ]# R9 C; j5 z) N
;;
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
1 t5 ?! T. E8 o[# ^4 P- Y9 K4 H# n+ G3 a
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)  Z& P& b: t/ o4 O9 a# B
if (trade-record-one-j-l-len > 3)
1 B; }) ?2 c0 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-one5 A; L- d$ _! j! N% `) b& z* ]
let i 3
4 y+ E' _9 H. elet sum-time 0$ E$ ^/ v& v* F8 s; T! h
while[i < trade-record-one-len]+ Q8 O4 B" r/ [5 ^0 b- d
[; ?5 N4 |" l3 Y$ n
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
  ^3 x7 }1 k, dset i
; l. Z3 K0 c3 N: i2 k  _( i + 1)
1 i& S% Y' C9 E! b6 l. b9 u
]) a  m5 a+ R/ Q$ T5 [, a
let credibility-i-j-l 0
0 D. p( v7 c, l8 o' t  L;;i
评价(jjl的评价)
" N! I4 }& U$ y5 W% C, Plet j 3
5 X" w2 I- ~, K8 V5 {1 n3 Hlet k 4& r" j: t# S; ~/ O
while[j < trade-record-one-len]
; V2 d% q+ _) }2 ?$ M7 T9 ~2 r[5 J1 U" C, z6 w
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3 F1 X! {% I& I& @! r5 V- s) ?; x
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)7 r& J- t' Q& G7 b7 q6 \  E
set j
6 y7 |9 B0 `# w. z; F( j + 1)
+ }5 F; J, e3 x! u$ `1 S
]  T3 D! e  f! \  X0 \
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 ))0 Y' I, ~/ {9 {

: [" ?' n! x4 u3 y! M; p

7 E  z: S: u7 D5 z% P' @( B$ slet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))+ s* Z. ^* ]# X! w) P; V& \
;;
及时更新il的评价质量的评价
/ F  z& v& z' ^- M* H( yset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
) ^+ z' T  ~9 aset l (l + 1)
$ `( g  R: v. q( @], k0 \; f' {  k1 t) I
end0 [4 P) ]9 W  u8 I* [6 S

4 M5 l: j0 P' L+ O: f) d/ N4 Pto update-credibility-list$ S" y* L9 I! b$ c& D
let i 0
: o+ S$ C9 N( q  [while[i < people]
- O" k- j3 `) J[  `8 r8 a0 C/ T! T  O
let j 0
. Q1 r9 g5 M1 z- }* g, i8 v! e" l( klet note 0
0 y" o/ B& z; U/ ^& k. y5 Alet k 0
3 _" ]: l% j* I9 w;;
计作出过评价的邻居节点的数目
/ U( C' q- q; H6 i" t5 Q, Lwhile[j < people]. W9 X( `, `& d. ?3 H5 {' j
[6 p5 r+ _1 _6 r  C7 F9 V
if (item j( [credibility] of turtle (i + 1)) != -1)
7 W9 E+ Z  {3 ?* O;;
判断是否给本turtle的评价质量做出过评价的节点) ?- w1 ?' N6 [, Y7 ~
[set note (note + item j ([credibility]of turtle (i + 1)))
# ^  ]% }+ x9 i: `; N; _" x;;*(exp (-(people - 2)))/(people - 2))]

/ k% E; n8 D/ D. X" ^7 T& nset k (k + 1)
5 L; L  ?7 `9 r7 ?# g' H' z3 t+ x3 p  b]" Y# c6 X( b7 z& k4 p4 s/ H
set j (j + 1)
: ^# v8 t7 L- g/ L8 P]9 S1 ^3 {% Y4 E# D* N
set note (note *(exp (- (1 / k)))/ k)  f% I5 p9 P. X& Z, f
set credibility-list (replace-item i credibility-list note)
; `4 X, A  s% s2 f/ C% Xset i (i + 1)
2 L* P, g7 d/ k' t: n]) B& u2 W- c9 y6 m, \  w
end# _; `. a4 ~6 B( w9 S1 J8 l5 ~, u
6 [3 s: |! z4 T4 Z. h& G  t
to update-global-reputation-list
% x1 e% ]$ q+ |1 c( Clet j 0: L9 A+ b$ u% L
while[j < people]
) f/ @, [  T, Z: |/ a[
& N) V2 L& P6 G1 G! xlet new 0
9 [7 F- S- \% L' t+ Q, A;;
暂存新的一个全局声誉7 R3 c  k# U, i4 M# F! o% [
let i 0
" o3 I7 |. Z& w+ o& Wlet sum-money 0) _2 W& O; _! f* }& X' g
let credibility-money 0
" ^6 l6 x! u3 wwhile [i < people]
4 \+ N6 M2 e& G) R% _$ H[# u8 U! o2 J( q6 E! b
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))' {: K, w& e  y
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
# A+ k7 |, a! |1 y1 g( E* E& x! g, Sset i (i + 1). K: m7 s) m2 K5 k* g/ N
]; \! Q* a4 \% C0 V
let k 0! o) M8 y+ O" u% r1 ?
let new1 09 j; I% ]4 O9 e5 H8 ]
while [k < people]
. ^3 _3 b- Q! e[3 D& C, n  u" S5 q' m* d
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)+ }$ S6 b: E1 O! j! N' Q
set k (k + 1)3 F9 p" G7 }* q. u
]: L% E2 L" n$ f: m
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 1 t. Z, i# |# j' G( ], E
set global-reputation-list (replace-item j global-reputation-list new)5 w! C0 w2 k: f1 W
set j (j + 1)
( |, N8 e# k- E. L+ ^]
" ?; Q; Z3 l* ], G' G/ Nend& N9 \4 P6 l/ \4 P3 P
5 v7 n7 y. ?1 Y/ D8 g
0 @6 k2 [( K' \9 W+ {+ H

8 d+ `% r; L/ u4 f- T8 Kto get-color
  T( M3 L1 x1 J( B4 `& V6 l0 J) |7 M. @: C3 v
set color blue
5 w8 E6 E& w$ C9 i  H
end
9 G$ d# [+ J4 \  _, N2 J
1 u1 w* E6 o. C/ {! Z/ G; mto poll-class+ O/ J% ]3 b0 q7 N% a2 [. `; F
end
( R, }. a  C' S- j. P. y2 n. A4 P3 Y
to setup-plot1
/ `- q& I, l. F6 n* `
& d* X, ]6 j2 H$ p8 wset-current-plot "Trends-of-Local-reputation"

5 `0 R8 m% a& u$ J0 D  n* u) e5 b, y+ M3 f# `7 ~" I" p0 Z0 B
set-plot-x-range 0 xmax
  t" A) R$ r- U2 _- A
, N# r8 C' {3 _7 N. K% i
set-plot-y-range 0.0 ymax

$ c: g8 f% v* ?$ _' Cend
' R) U3 q' N( a
! [! P2 V3 Q) f; ]1 x0 A  Xto setup-plot2
/ N) I" i+ H% k) m/ d# ~4 B; s# C
" s, F6 x8 T; }3 Hset-current-plot "Trends-of-global-reputation"

: Y# Q5 U( x( ]! _0 g8 ^8 R( t, W) E/ |1 j8 D$ ]# L# L
set-plot-x-range 0 xmax
- X4 t  C  U2 V0 S( s

8 `4 z9 K* l& ~# p0 m/ I& \set-plot-y-range 0.0 ymax
9 z: u, Q. K6 O6 X7 U; {
end
( R7 h& j  i. U- G9 H3 U5 ?) t
to setup-plot3
" v" Q7 W3 R  K0 F: Y& }
5 b( O6 m, e0 ^7 \set-current-plot "Trends-of-credibility"
' ]) y! m8 ]% W. T" k' b" W

& w0 b9 K  c- I3 U: h( F0 wset-plot-x-range 0 xmax
6 ^, u8 Q- E2 S" l( |
8 M3 }' A2 x# W8 H7 G4 ]" O
set-plot-y-range 0.0 ymax

0 v7 L  u! B3 Y! G9 W* S8 N9 Y% Kend
8 |& U6 U  X, e7 E9 K
. h  v! x. U  N+ `6 |to do-plots
" u3 L. ?7 R( X" I. Eset-current-plot "Trends-of-Local-reputation"+ s, k4 A& H  g, G+ V# D& F" m
set-current-plot-pen "Honest service"
4 C  V& W0 N. h9 }6 fend) B& f* v- z; Z5 ^4 Q4 f3 A  v' c
1 z$ ]5 F2 o! m# H$ ^- g! 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.
6 F9 w2 c0 Z+ d& m( R5 D  ~, a% r' a$ ]
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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