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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:* q! d8 ?5 }) c: w1 Q
to do-business " A! n9 ~# x4 k) q+ c& G5 |" @! X/ D
rt random 360
6 d: ~* K& P& P* ]- y3 c3 X fd 1' O3 K$ L& a5 u4 r6 o9 x: v
ifelse(other turtles-here != nobody)[
  N; a( B) V0 q2 \' t4 o   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 e, B/ j5 Z, O3 N$ i/ U* _; e( ^- J   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    # R6 Z) i* Y- y( q  ?& B
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
% F$ }+ _  N" [) F+ H5 H   set [trade-record-one-len] of self length [trade-record-one] of self
- }& a  X- V! S0 d   set trade-record-current( list (timer) (random money-upper-limit))
* T. \7 r1 C! X- D6 M+ F2 s
; H9 c5 u) J- G& K问题的提示如下:
; x; k! [* e. ~- r! h: t; L- u- O- U' `6 @+ i- q+ K& m
error while turtle 50 running OF in procedure DO-BUSINESS) H4 O1 A) s- J; S; Y6 [
  called by procedure GO
/ b! M' M1 g# V+ ?OF expected input to be a turtle agentset or turtle but got NOBODY instead.
' M  W& Z  Y: G& b1 ^
(halted running of go)& k, Y" l; ?' a. j2 t, ?

7 I) }, h* B  q- v. Y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~~
! D6 [/ o  E3 V7 |9 s6 j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) i- D2 t2 n4 i' l7 j+ ?. R' W
globals[6 f! J( I9 v3 Z# U) @
xmax
8 ~1 e. X: r  J  Q$ P' Vymax
- `! R& S2 C! q; I- C! W! @8 G: Vglobal-reputation-list0 H( o$ H( \7 a. f2 N

  c& m0 a( |; c: n; \5 p- ^1 @( D;;
每一个turtle的全局声誉都存在此LIST
& C9 N6 V# d0 F$ x% Mcredibility-list
, n3 p$ F% O9 g6 Y, q;;
每一个turtle的评价可信度& ]0 I5 |7 @7 m
honest-service
% W8 s2 g) w9 ]unhonest-service
9 R9 N- Q. Y3 o0 ~; L& [oscillation
& o! P6 V8 q1 \, C. s, X4 @' Yrand-dynamic
5 i2 b1 x/ V! C]
: Z. R! W2 l8 X2 ?
+ y) g$ U: L! d2 jturtles-own[6 ~1 r* S& W6 C+ D
trade-record-all
  W/ M1 x# h, m1 X;;a list of lists,
trade-record-one组成
4 X1 U6 h4 U8 Q7 T$ Mtrade-record-one
$ z  m5 j5 D: 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/ ~9 q7 p5 X6 C, Z$ D1 c
6 h2 ^5 k2 `' N2 X/ ]5 m
;;[
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]]
/ J0 @" E: R" J5 _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]
, u. @/ ?  C2 a+ ^1 N# Zcredibility-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
! o. q( k/ Q3 T( C* Dneighbor-total
4 S$ `9 `, w% m7 F+ c;;
记录该turtle的邻居节点的数目
( ^# |7 k# D2 [; j& @' j6 k4 Z/ itrade-time) G8 [- j7 V) \8 U9 [9 N' P8 B
;;
当前发生交易的turtle的交易时间
/ X3 F' j0 r5 ?1 e$ gappraise-give
, r: U+ }6 o! b;;
当前发生交易时给出的评价6 ?6 ]; u. |1 r. ]- a  _! H
appraise-receive
5 d. L: s% x: r3 }# Y;;
当前发生交易时收到的评价
1 b) F8 H- w5 happraise-time
- E! T. i4 |1 c) |8 D- j;;
当前发生交易时的评价时间/ C+ ^! y9 t+ L! c. \: I+ \1 o6 r
local-reputation-now;;此次交易后相对于对方turtle的局部声誉0 n" v7 ~5 X. C/ Z9 L( q
trade-times-total5 T  Q& [- M; W- M9 u
;;
与当前turtle的交易总次数
3 g5 x+ S7 f3 Vtrade-money-total$ J  Q9 n5 v; I5 }
;;
与当前turtle的交易总金额
' @6 F/ o- v( R/ mlocal-reputation
9 o( p+ O8 ~+ @3 A" ]/ ?6 i- aglobal-reputation
# ~4 J. _/ ~$ C% T3 S* ucredibility! a  u: z, ]: n$ V
;;
评价可信度,每次交易后都需要更新
4 B! n/ g6 n2 L, A( s# t# rcredibility-all
' s  w% A! j4 }, a$ w# ?( a;;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1 X1 C, R$ I& N* p
3 |4 e3 J7 x4 p9 ~/ [
;;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0.56 h: f( i! J4 {. O+ a# d
credibility-one
  P8 z* M+ v* f  H5 g- {+ d: t* D;;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% _  _8 q% r8 \( }# T$ ]0 H1 Z$ `
global-proportion! I5 l- `6 j+ G- i6 e- p
customer+ Z$ V( f1 z1 D; u
customer-no; _8 ^' w, L: Z9 I+ V  d, y, v
trust-ok
; G% a5 d0 ]0 E; R5 S6 D: Wtrade-record-one-len;;trade-record-one的长度
5 C  [9 y2 O2 w]
2 c5 `& J# M0 T
2 I  D; Q- }5 K! l7 |;;setup procedure
$ U5 d8 f( }  D* }" B$ u# ^+ t2 ~5 C- _9 k# A
to setup2 g% r2 J! v3 u2 C  m0 d% M
: k" F) T1 V4 Q  v( f! s
ca

5 |. \6 ]$ B- s# o
3 |, R- J; A0 @0 minitialize-settings

% G8 I( L* o& u; V' K- P
8 S( D- v% H( B5 f! N: Jcrt people [setup-turtles]

; [2 _% x- o; E, A
9 h4 l+ Y6 }1 O% creset-timer

. K- i+ U8 c2 C' B7 X
( H. l* H$ L1 apoll-class
" W# F/ h; F4 r4 H

1 T! {$ ]7 m9 esetup-plots

1 O6 o+ B6 j: [% ~6 O. c/ z1 }& v& V3 Q
do-plots

( c( m; Z2 @0 d! {/ Dend
0 n" G: I* @6 [
$ F+ w( j  V3 U) Hto initialize-settings
$ H% \  l. A+ B( s5 M, Q2 y0 S0 Z7 _3 b8 M$ q+ O# e8 B. B
set global-reputation-list []
+ y& J$ Q0 {2 s/ k
4 N- J. K8 f) p, p( q7 k
set credibility-list n-values people [0.5]
2 p0 q- S, ?1 B, {- ^' {
* w' G8 K2 {: t% _
set honest-service 0
$ n; L* L. }  ]# v1 Q
1 j* u6 ~1 L" L5 k
set unhonest-service 0
& U' }$ s& c4 J' r- A' e6 k- J
9 s4 l  E" M3 A* S
set oscillation 0

% f. M1 F! W) S  J  G" h
7 t( Q# h, Q2 m% wset rand-dynamic 0
5 {: _" b# x5 D3 ~% C! {# D/ {. ?! \# }
end
4 Y" x) t% U2 _6 u: m# p# x0 ~2 T) t$ U3 f$ I: q6 x
to setup-turtles 8 V  J: i0 r& i" `
set shape "person"# V$ j# i2 X$ f- T! l, o- U
setxy random-xcor random-ycor+ q8 X2 s1 K" p- o9 _/ g  I
set trade-record-one []
$ O0 ~- S( c- q/ n, t! z" S& X
" X% Z( \+ ?6 R9 P" H& J
set trade-record-all n-values people [(list (? + 1) 0 0)]
, d6 n# C8 v" d( `

. t0 z$ w. f; U5 K* p# p  nset trade-record-current []8 K! K1 s. n- l9 c0 U6 l1 N
set credibility-receive []
; g7 y: }& ?3 C0 qset local-reputation 0.50 c% g9 R; K5 o7 q# m7 r
set neighbor-total 0
' E8 w, ?) q; E) J+ M* @( {" Sset trade-times-total 05 H% ?; H& n& d, `
set trade-money-total 04 ]7 M% {. {( c  w+ t/ s
set customer nobody6 j4 r6 g  r. H$ E
set credibility-all n-values people [creat-credibility]* S4 d5 a2 e  H# q! ]" U
set credibility n-values people [-1]
  y. _2 B' p! Y0 Q, uget-color3 Y# `, M) S6 B. h; L/ g

; b/ h: M" \. Xend
. l2 A: c! h1 g& S4 o$ j& U7 _* ?* u
to-report creat-credibility
% z3 x* R& D( k3 M: ureport n-values people [0.5]
4 a0 a" E  O7 J( O! U- I0 hend  b6 o* v4 v3 g. W) t9 j
7 Y+ d' d$ B3 l$ \4 g: m
to setup-plots& L6 I: |" ?% l% i! \- }
( ^3 g/ Y( c* C# `# {  w, {
set xmax 30
6 f5 u- K" E6 V0 |  x& X* d8 X
% V  f+ D4 @5 B6 `- N5 R* s
set ymax 1.0
$ h' h4 S0 |# g) W

) {/ A7 X2 h- _clear-all-plots
3 w/ X0 O- z: t' F1 `# i

- V8 n# j9 l+ d. Bsetup-plot1

" }3 }1 \) a  I: ~& ?  A, c$ A( D1 r+ A. g+ q
setup-plot2

0 J. o: a) K' q. \* \4 m5 Q; h% u
' o8 @# p, g3 D, xsetup-plot3

8 ^+ k8 o9 f3 x$ b5 S! w. zend4 P* ~2 `/ C4 A+ F- X

* b0 G; z+ s3 D# n! y;;run time procedures! }0 N! P/ e( B' p- x. B" K" \; X

. @( h) K9 q' p) G# {# zto go; J5 h5 \6 B; O$ E2 A8 A
* |: A+ f) N# D0 t- e. n
ask turtles [do-business]
- e: E1 x7 `" [5 p  u) e
end  |9 t1 }9 K3 Q- r2 n' K

$ `9 J! A! a+ T/ `' u) F  Uto do-business
  ]/ B; C4 D+ k! N5 O5 K

: ?2 r* G8 @- K! N4 H; \
. @9 F! c( P7 S" t2 L4 mrt random 360

; ~. y' h2 X& q7 ~. y! P
9 g) U7 O6 t/ x: v+ P+ jfd 1
: g& d0 R& H7 q" j6 m& _7 v

2 ]; ^& j2 \/ a6 wifelse(other turtles-here != nobody)[
5 {9 f5 ~3 C! I( f
) T% b! {/ g8 I2 U( N5 C, Y, {& u
set customer one-of other turtles-here
9 _2 |& j1 O4 N2 v8 _( Y( Y5 e

, e6 }3 B* D- ]" Z' s5 j  N" E;; set [customer] of customer myself

. H/ a1 _! _! G6 \* a5 s* M$ {2 `  D4 ^- v
set [trade-record-one] of self item (([who] of customer) - 1)/ A% |6 l% W$ I3 H
[trade-record-all]of self
4 I- v7 }  `+ u1 H5 K7 u4 A( w" Q;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

0 U  J% o% o0 G- q8 h
5 V7 S9 P* R, Q, ~* e) F+ eset [trade-record-one] of customer item (([who] of self) - 1)
. P4 P6 q- k, d1 Y: I2 I7 q6 t[trade-record-all]of customer
+ b, C. e1 ^7 ]) M. ]  U
; x: l) T$ R) |: n" G
set [trade-record-one-len] of self length [trade-record-one] of self
2 h  K  H- S* t" T
' U  j3 Y# c& S( x1 B3 O# m2 M/ I
set trade-record-current( list (timer) (random money-upper-limit))

% b$ F, N+ u6 [; r- |. }2 d( N  g$ O8 P  }& p1 R/ Q9 z: ~) y6 I/ r
ask self [do-trust]
) @, J8 K$ b" q4 i9 H1 u  R" t6 s;;
先求ij的信任度
* ^1 B" ]: R! k( s2 O
; F0 \! W4 J  ]2 iif ([trust-ok] of self)( p! K7 s# G* W% b2 h
;;
根据ij的信任度来决定是否与j进行交易[
2 _( a' X! B, y! z, ~ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself' Q. M" v4 |* D& n

: h/ K$ ~: h' x. }; c/ L+ u[

% p8 E2 S5 {2 i2 [) ^/ ?
7 D; M) j1 E; A: D5 N3 `* P( ?do-trade

1 I- m: J9 m( @* M. R* z3 }, A, l3 a2 b1 V( K# G
update-credibility-ijl
) q. t' H; r" {5 }! r3 `

+ j( L' ?( f0 ^- iupdate-credibility-list0 e$ ^  g( _9 R( X2 _5 }. o

" g# ]! Q5 e2 i5 c: {! [
4 C3 a) u+ z1 C% ]update-global-reputation-list

9 g; j/ B7 \8 v- v6 W5 V
% Z" x, ?4 s, P5 r& O0 P/ qpoll-class

0 D1 b6 x7 h! _5 N; C) M& U/ u! N0 D
9 {8 u2 z" f# t/ ?( Wget-color

1 Q2 t3 s, Z# }( T6 S
6 M# q9 \9 X4 j8 Z. y) c]]5 @2 @! N! j: p( g! i- P* h9 Q

  I& Y, f3 {# ]7 n' ?;;
如果所得的信任度满足条件,则进行交易
8 `* A, v% O7 w( z% l% C1 B" D6 ~/ ?9 L+ W
[

, L  d3 I$ h* ]3 d' F+ ^# A: o0 ~
9 Y5 d2 {: \* e2 ?rt random 360
6 W4 B& E; @/ r

5 C3 y1 {2 L1 E' @* p8 y- yfd 1

. S% m  v" S/ w( W+ {' k
! ]" a. y& ^1 n. O" m, r1 Q]

& M& n/ _8 w! k9 D
) [* ~/ j9 H$ J% X4 T4 Mend

8 G. A% h. c3 ^7 F0 w* L, @1 j$ j+ Z: i( I" W
to do-trust . C) {1 r6 p7 N" `% j/ `; `
set trust-ok False
) p' L" m3 q$ C! Q6 Z+ Y3 K
4 ^- E, S4 W( N: e9 H
" p4 K/ P4 S1 {! k, F4 f
let max-trade-times 08 p! h) B; t( Q0 `& `2 P
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]% q$ U6 Y: w: M! k6 S: a4 ~
let max-trade-money 0. }4 u) w% q: U2 s. N
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
2 H: Y. I1 a: n. I9 e$ X/ Hlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))& m6 v' o  e, F- t
# g1 e  E9 D% ~% J$ p. B+ b" F9 ?
/ X- w3 v/ L( W8 x7 T3 f, @3 p
get-global-proportion
5 l* n% T7 b% Qlet trust-value
2 R& o: H, j0 ]5 [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)

$ m' F( ~- _! Z, d8 z5 h: Q0 gif(trust-value > trade-trust-value)$ F( A" i& |/ u( U/ t
[set trust-ok true]- J2 A4 V1 I- T) g0 f3 V0 `) s
end
6 h7 P! p8 E0 D  e% V; H# J& G# m. V% J, {; y8 G4 @# ]9 U
to get-global-proportion) x( H" v3 n+ O4 M/ }# P7 q
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)) D) F! t" H$ B- M8 `! ]6 l3 n
[set global-proportion 0]
6 s& ~" t0 w' |[let i 0
0 j) P) W, w. W3 Q$ H% F  f: alet sum-money 0
8 V9 x2 L5 g7 a4 ewhile[ i < people]
0 t2 b7 C; X- T8 Y[
. \' |0 h4 u1 I! B! Q) ]if( length (item i
, j# D( L' H& N. A" Y: v4 n[trade-record-all] of customer) > 3 )
$ k) w1 A- J: h2 r
[" I% r( J) L7 o. ]! b
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))' a" ]! U8 n# y: Q# K# q  u" B' J& F0 O
]% C6 c0 q+ w) A; K0 y  u- V7 q
]
! p# S! C+ j9 O, M+ B: x( w! H# A/ |& Mlet j 0* z5 M3 S9 V! \3 h8 p# k
let note 08 s- s# X1 T2 K9 k8 Q7 H
while[ j < people]; n7 ?# {/ v# h! w" G+ L
[
7 F& D2 f, K- \. q+ I$ I( uif( length (item i
1 u" t4 Q5 R* l. w) x[trade-record-all] of customer) > 3 )
/ O( ]6 t' J! B# v
[
9 u, N1 u3 S7 v1 Y  ~3 j& l" ?$ Aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)) p6 b5 V' j- l
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
. {" E1 q  q* Z$ ^+ u% `/ m[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]3 M+ U9 c$ `& O% Z3 X
]
  `0 M/ B+ }" P) A]
2 u% p3 m# k, m7 eset global-proportion note' E! r5 t  F2 k4 K- C# e
]
% a" y7 V( e* S! k! Cend
/ I. y7 b" V& T
& \# t1 U3 Z7 u* @! L8 f. v5 Oto do-trade
! b; \$ w4 @! D* ^;;
这个过程实际上是给双方作出评价的过程( o( f; C$ q% i7 U
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
" a8 f) u, e5 T; _- Q% d( Q5 [set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价2 z( w  Q- w7 J9 T1 K
set trade-record-current lput(timer) trade-record-current
+ f' J2 v& P: K& B;;
评价时间
$ @$ F/ y! R% Bask myself [
+ d5 `0 ^+ T) c" Z/ b( L5 _3 Nupdate-local-reputation' h& S* ]( ~5 t  \1 k; M" b7 [
set trade-record-current lput([local-reputation] of myself) trade-record-current$ ~- s) W. ~9 b) t; M) W6 W9 X
]
' p8 W* u7 X& t3 B8 h/ _# v/ F0 uset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself. o3 `4 o' {5 G0 u
;;
将此次交易的记录加入到trade-record-one$ c, r4 D& u- F/ v+ @$ [9 e# J
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself). {9 A0 _$ K& i' ~7 X
let note (item 2 trade-record-current )9 t8 h3 W$ v+ ^( ?0 m
set trade-record-current) m+ v3 q2 C* j/ d+ Q; E+ X
(replace-item 2 trade-record-current (item 3 trade-record-current))
' D2 i, q# o- r' R, I
set trade-record-current- ~/ T( H9 K1 v. T
(replace-item 3 trade-record-current note): t; k6 J% G: Z
. R  z+ q, N. q9 y# g
/ m% O8 x0 u5 w$ p: N4 J' t2 ^
ask customer [
/ I8 a& _/ `- U$ F8 @" Supdate-local-reputation
0 R  P/ N5 b" oset trade-record-current
* u! e9 J! b* _( ^7 v2 B4 o(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
- [6 v, I: O6 ]2 M6 \
]$ p9 D) b, B  K" Z, b

8 ~6 ?3 r. t) i$ {: z
6 g$ N' a4 U, y
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
7 Q! _; H7 z- o  L- r( g8 K
/ _0 y) `0 F6 o/ t- W4 d5 @0 o
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
( i# C7 R% s/ J% E) a8 k" j;;
将此次交易的记录加入到customertrade-record-all2 |* e3 T& U5 U5 ?& k
end
8 w0 {) Y6 Y* c& f) c! g9 G7 ~
& }3 q  J: g& e. ]to update-local-reputation0 v* e) ~% V  L. d8 K( u4 D+ }
set [trade-record-one-len] of myself length [trade-record-one] of myself2 o$ T# ]% x. N" D- c* G$ [/ X
6 ^9 U. O+ e, P$ Z- X8 i0 C
+ I$ R' M/ I4 }* A& m$ p
;;if [trade-record-one-len] of myself > 3
* x4 i% w' E% W
update-neighbor-total: V+ a. R$ X& P. ^
;;
更新邻居节点的数目,在此进行8 }7 {5 p& H  q* S3 f
let i 3
- a- ]- U" i, W4 ?. r  e; l. `0 tlet sum-time 0
; G  c# I- ]  k! g4 ^while[i < [trade-record-one-len] of myself]  y4 J8 k2 S4 i0 q
[
+ E3 O5 R! s) y6 T' N1 Hset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )9 l$ y+ x. `2 t3 [
set i6 u- b4 A3 k$ O' |
( i + 1)

0 Y3 U- X) u' s. L1 L0 u! T]
' y8 m: F0 Q6 q/ ?/ u) X0 W4 Tlet j 3. m+ r5 t2 F, p- }. `
let sum-money 0
: x6 E" l; S2 G$ ]while[j < [trade-record-one-len] of myself]* b' o3 K; h7 W
[, ~' g- ~; a5 Q6 n3 `% N
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)" C' ^' R- F. z% ^, W. r0 h4 U
set j
. E% {6 ]1 N1 Q% f( j + 1)
/ h3 N4 q+ D2 ?4 S) E+ u6 t
]. x$ p/ u1 n3 f* d' n. N/ ?- l
let k 3
" K% e8 h; h2 m* t( w+ z4 @* |- klet power 0
  W$ ?6 e. V% }2 s  v8 z9 klet local 0! t  O0 H* f9 j& x) \7 P8 G
while [k <[trade-record-one-len] of myself]  d; F- Y* a" ~4 r  ?
[4 A0 P, K$ k2 R  z; [$ u# {6 K3 `
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) ) X" S8 d/ B& l7 ?8 F$ O5 M9 ]2 k
set k (k + 1)0 O8 K$ u6 E. u% N' W, ~, Y
]7 E6 z5 _9 k& ?9 ~8 j% r
set [local-reputation] of myself (local); p& {* m" h$ p% \+ ~$ |
end
( K; B/ r# w" z  t" d0 _8 @( ]: }5 f  J0 |8 @
to update-neighbor-total3 N6 e& _' K8 `/ h* y3 C

# Z2 a( i6 w/ cif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]$ `/ d! J6 U& ^0 [8 K8 H* S  Z! p

) T( W" F1 k) J

% C! T# I# [: H; \  b4 Y1 Wend( Z4 C1 X5 i- g, J7 s! i. t
4 M# L7 {2 n/ Q) w- `: a: \
to update-credibility-ijl 0 K. }! K; w! K% a, o( x: ?
  C7 w, `% v! h- x/ v
;;
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。' V  E9 b3 p& i+ t# `$ Z' q
let l 0
- ~& }  b9 G' n& M: e$ swhile[ l < people ]
' N; O8 z6 h# |4 l% 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 `' l, q  R+ }; r2 ~( w* x[% R' N3 I3 l: c( A7 T
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
! _& d. n, X- q5 C* i* H4 ~if (trade-record-one-j-l-len > 3): ^( E8 l7 d5 H& t* }$ B2 g
[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-one3 U: i8 B9 r; F2 d5 H: L
let i 3
' ?, I' s9 y( p/ ]let sum-time 0
( T3 ]& U1 T2 r, b9 @while[i < trade-record-one-len], ~" s4 y) X( d, @: Y' m2 @
[
3 e* {: h, g# s% Y1 f9 {2 Hset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )( q+ V. b3 g  H& `" a6 U" i" Z
set i7 m4 g0 K' A9 v  @2 h  q
( i + 1)
: F! y# J  y" p! P( b5 Q
]) g9 r) f; O& R/ s, X2 X
let credibility-i-j-l 08 i* J) J, t% Z( u" x! a
;;i
评价(jjl的评价)8 O/ G; x- M. S
let j 3/ V! a1 k9 w/ o' m+ d
let k 4
8 ~) v5 p8 Q. w# kwhile[j < trade-record-one-len]0 q4 [  u$ E" ^; g6 w! M
[
: u+ i2 M! e( Bwhile [((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+ K" X+ p; }  h( w5 F8 e7 L
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)# G! w- _% X3 y. v) C2 n; f
set j
7 k+ K- g- M: T( {( j + 1)
5 L' ~  j' o" ?' \) k/ n7 j
]
4 \4 L! e2 U5 x/ L2 G0 ]7 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 ))  n, g; q) M: J# P+ C. |

8 m$ M! ^6 i! J5 i; W) E

9 f$ j# l  g: D' I/ Alet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))  s9 Q! _; q; c3 c) k. l( H
;;
及时更新il的评价质量的评价
! R6 l  H  g" |8 fset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" C3 R- g+ T# G! Qset l (l + 1)  L) u3 Y( f* Q* [8 f* Z) k
]" r1 k9 E$ ]! o, w: G: |2 T* L& q
end( T! t$ [( S+ ~% w7 A

4 x7 J( s% H& e9 `: Kto update-credibility-list' y* T: h) B& x: u
let i 0# n$ }8 P# f) V- z1 J
while[i < people]
2 R) b' v, U  t' t$ _# r[
; _- D. p" e* d2 Hlet j 0& x! n0 A4 A$ H- E: c. P
let note 0! R3 z6 B( Y) b
let k 0
! B& m& e( E- ]8 c;;
计作出过评价的邻居节点的数目
1 Z- N/ b( o6 L( C$ @$ mwhile[j < people]
4 Z4 A) B+ ]8 N, j$ x[- w& ?7 U: F! V; I
if (item j( [credibility] of turtle (i + 1)) != -1)$ B4 s8 j6 X' o' K
;;
判断是否给本turtle的评价质量做出过评价的节点
7 h2 U0 p" J7 M6 T- J+ Q[set note (note + item j ([credibility]of turtle (i + 1)))
2 Z- S& T% @# o) `/ {% Z;;*(exp (-(people - 2)))/(people - 2))]

  ?5 k# Z7 [* B: a9 ?set k (k + 1)0 b8 F5 D9 \/ I
]
: Z; U0 E, |1 o' e; {/ t4 yset j (j + 1)
4 n: h' C* h9 W( n% c]' w* |6 V# H! H- f: j1 o
set note (note *(exp (- (1 / k)))/ k)
; a# R+ V+ J0 L1 O9 u8 Jset credibility-list (replace-item i credibility-list note)
+ T0 i, @( ~; u/ c( _: C) tset i (i + 1)' \$ F* H( {1 }' j$ w: u, [
]6 B8 f4 I% T6 O' h, Q/ x7 `  y
end
8 O! a: M$ G7 x, L6 }2 I9 }5 W1 n7 x6 v  o2 B8 J0 b) P6 X
to update-global-reputation-list
( j' r0 L# y. _( T2 j6 Olet j 03 t  v6 P* M7 H; T& N2 O$ B
while[j < people]
7 \1 \1 ?8 o& T* y- L0 P: k/ @" O8 }[+ W9 p$ U- T9 z2 a1 \$ s- [/ E
let new 0
1 D& w$ K7 n' K;;
暂存新的一个全局声誉+ {# `" @: t6 T
let i 0
) W" q! |4 B# @4 J8 }$ xlet sum-money 0
" W& p7 u2 v) q/ O: R$ qlet credibility-money 0
. o! N0 L. _! e+ P* X- p8 Bwhile [i < people]
3 o0 [, \9 W' t3 G[
* M1 b+ x7 E9 H$ l4 S. Wset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))$ n4 H$ t. D- K: o5 G
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
, f  F# h, L- s9 n6 r2 a' S1 Pset i (i + 1)+ q; j0 e8 [4 k0 }7 N! `
]
; c' L' c  q7 N$ slet k 0
; c: g2 E; I& ~7 V/ Blet new1 0
3 p7 ^  x; b- U  kwhile [k < people]
& C0 }7 `' Y& W* f9 o# ^' g[( E6 m8 G# ?4 O
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)
% h7 T$ r0 ?# M  B' l" F( {- z" }set k (k + 1)+ \* _3 D4 h7 {% n
]
' Z7 w! E/ l( x* Fset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 7 B9 ?/ ]+ a, C3 O
set global-reputation-list (replace-item j global-reputation-list new)9 u/ ^* N% ~4 S0 D+ O5 Q- ^7 A
set j (j + 1)4 q7 u3 @4 v9 f6 P* z
]
& m! |% H6 v( Y" l9 r: `end
& n+ x/ `7 F2 F( ~9 U7 v4 \# U, @+ G: n: h* U3 [; n
  ~6 {4 F9 K8 U. F8 J. v
: f0 p: h2 k8 B4 K, |
to get-color
) C* Q" Z( D: e9 ^/ x) ^1 u6 G7 F0 S* B' ]# T9 ?! P" Y# B! [* G' u
set color blue
2 C* \+ y& N% o" S0 r+ ~6 g
end6 P$ u% @( R, A( R* x

0 q5 p7 T; X6 J. x% l3 kto poll-class' }! M& p2 N* J& l
end
- |) u, N/ O0 l2 [. Z( f3 {9 D/ o( p2 @  c* w- q( [# P
to setup-plot1
+ `: x4 M4 B2 p# s" {$ ~2 Q( z/ ^  h: G$ _% y
set-current-plot "Trends-of-Local-reputation"

+ f8 \' O  a, k
! a9 B1 j- p! j& n- xset-plot-x-range 0 xmax

- R! D& o; y( g0 Q, A! s2 k! P0 ^8 r7 c; [% i6 @7 ^( }
set-plot-y-range 0.0 ymax
$ L) {  l6 i* i1 l' i7 x4 Y$ W
end
' v. z* @  k0 s# v; b; `. o  @( S2 f* u6 S% s+ }  p0 \
to setup-plot2# J4 @; _7 ~' Y+ H- Q$ \: F5 `

  X  L% i0 q5 h; `! P/ pset-current-plot "Trends-of-global-reputation"

/ X- E& X6 d. L/ ^7 e, `$ y, U0 q7 I0 R3 I2 z
set-plot-x-range 0 xmax

$ v) _4 x4 A) W8 R' q4 j
/ O1 G& V' ~# j# K- dset-plot-y-range 0.0 ymax
- @+ h" @1 o- `/ o; e
end
6 F) `% d$ j' p
$ Q% N4 x: v8 O* e  F+ Hto setup-plot3
: H0 `) v, V$ x8 U6 y0 S! `: ^% J; V5 A; _" B' C4 l& z8 u! c! ~
set-current-plot "Trends-of-credibility"
! A8 }2 f7 B7 |! S0 f
4 m" X3 j) j. p4 b# y( B9 `
set-plot-x-range 0 xmax
6 [# O' v# z1 O
; \7 Q0 l3 Y9 g( f' X# g( \
set-plot-y-range 0.0 ymax

9 f2 I: ^8 b  X( b7 I* X" j' Y+ oend
4 X8 }: S# K( u1 a, y+ f. G: w. O& V- L  i1 J. v
to do-plots
! O) ]. x4 q$ y" @* v  v: hset-current-plot "Trends-of-Local-reputation"1 G, ~# T) A  d$ p& r5 V- B, L
set-current-plot-pen "Honest service"
9 r) ]$ a3 h+ D: O) a+ ]end
, e7 m, U" g8 C# i* l% W; o& o0 _6 M/ k; o7 v$ F8 W4 X
[ 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.7 u# Q+ p9 q: ]: t9 j' _  `

- g8 S) I* _$ ], {# H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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