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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:
; m- h2 e% I) m- f" ato do-business
: d& J* \2 Q; h! M5 l  o rt random 3608 A: `( u3 o' [5 A, u6 q+ R
fd 1$ b) k: H4 F9 |) Z6 Y5 J+ k
ifelse(other turtles-here != nobody)[
& V; y4 i$ F" V   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.* U6 E4 A1 i$ L5 N
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    0 Q- F4 _& |# K7 {( e' P6 l, |1 ^
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
  c5 I- e7 c" O( E1 e) B   set [trade-record-one-len] of self length [trade-record-one] of self
) z7 u4 G9 Z) D* |" L   set trade-record-current( list (timer) (random money-upper-limit))
) A- ~* s( V/ b4 q, I6 u9 b. w) ^) q& l8 o6 U  Y. y
问题的提示如下:
" Z. ^# m3 G9 a; X$ I0 S, I
3 G4 s0 N6 O" ]7 yerror while turtle 50 running OF in procedure DO-BUSINESS
, l  y% ]3 C  `. j* ~4 Y0 B3 J9 X  called by procedure GO+ i( C, x: z# T
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
( E$ D# n6 l* j/ i/ m# s
(halted running of go)
( p. ]2 m0 D( E* k/ E) e7 m* I1 E, p8 N. @
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~~
4 r  n+ m2 E+ [. l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# `2 F. ?$ y2 `) o' L& `/ u& c! g
globals[7 n6 i! R4 w& Y
xmax
' w4 T) V5 i( fymax+ I- M2 }: f, v* P$ ]
global-reputation-list
" F) n5 C2 h+ z9 C
7 b* J  l: M  B# v8 s9 b, @;;
每一个turtle的全局声誉都存在此LIST
6 W: U2 r  A- v6 ^4 I1 icredibility-list( w* D# M4 I/ c1 e% K3 [
;;
每一个turtle的评价可信度
% Z/ C  X6 O- Z. O, a! E3 qhonest-service
4 n% G4 A8 H4 i' @* K$ V7 a* bunhonest-service
; G' h3 w/ M6 S8 i4 ]5 |$ Poscillation
, p4 _; V* i0 T4 A4 xrand-dynamic
; L' e0 t4 k- J+ h, Q' N$ V4 ?]5 B3 N, Y, `+ u! }3 U3 {4 I
; X: J, ]" g4 U, A8 B
turtles-own[
6 {9 Z3 C4 m) _3 X2 S+ l9 e6 c5 g& p) Mtrade-record-all7 U" n' e: s" h  z2 D# I+ n
;;a list of lists,
trade-record-one组成
5 G4 m- x1 z9 ltrade-record-one
' l' Y2 m& }' ?4 ~  N$ G) [& C% J;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
. Q0 j  M1 n. f/ S9 b1 g# @" Z/ q' {; |0 w: g3 t8 A% B6 F
;;[
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]]+ x; h# ^8 M3 V
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]: Q6 z, O- i% |7 C. R# K
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# O' G" q# H# D' E; M/ {
neighbor-total( K+ o8 L9 I0 e: P
;;
记录该turtle的邻居节点的数目; J4 l0 g, X: ]1 B9 \1 M# o0 b/ l
trade-time3 a+ T  g4 R# i4 n6 m6 y
;;
当前发生交易的turtle的交易时间
  r9 H/ L. U. |appraise-give; @8 j, I7 m  J! L: d
;;
当前发生交易时给出的评价
  [& f( [1 f% |  H- Aappraise-receive0 C# g' }& L$ B- ^* @1 V8 t
;;
当前发生交易时收到的评价
9 Q4 v$ T7 r) m  h: [( Tappraise-time
$ i; s1 R& G0 u! j; `6 W) S; P6 c;;
当前发生交易时的评价时间
% E$ {9 l; u8 q/ d/ `) S* [* Z9 rlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
( \! e; q; f7 t7 Rtrade-times-total
' @, J0 H- j7 {% m9 G. [5 k;;
与当前turtle的交易总次数9 B' \2 g# L7 Q
trade-money-total9 o) C1 \+ Q: w0 k% F
;;
与当前turtle的交易总金额! z7 [/ ^& h4 J' v
local-reputation
+ @9 U- u4 e# G0 |4 f6 v4 E5 dglobal-reputation
* S- @# g$ a! o/ L. lcredibility
* d2 u  T1 G# O;;
评价可信度,每次交易后都需要更新8 q4 Z; ]0 p3 Q: A1 d* D
credibility-all, a8 y* V4 i- _5 K0 F! H- V1 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
) i4 L8 Y! f/ u7 Z' v& Y: z, j, S' z' Q
;;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0.51 p1 q. U  ]( U7 Z% {
credibility-one
! K. w' e# C9 t3 I* r) p+ v& c;;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) K8 @3 M# K/ t3 |9 F8 J, }
global-proportion
3 M9 Y- n! W8 J5 s/ `# H8 Ncustomer( M, `1 p  P* n- e
customer-no! j# G0 o5 g2 n7 i) R3 X5 b# p
trust-ok3 \9 E2 ]4 C$ ?5 e
trade-record-one-len;;trade-record-one的长度
7 K2 W5 y% W  U8 H9 I]
+ @( {9 J+ K% ~/ a( ^
: J) j9 C) D* L. }' ^) g! n;;setup procedure4 U& p& t8 y! f0 e% U. p
* }- |0 A9 Y. ]. ~: K1 W
to setup$ E/ r5 E1 d7 z
! O8 a; e: s2 q; q; L9 c1 S5 o
ca

/ T2 g; k2 K# p& M1 b$ [
3 I1 c7 m# H1 X! c3 T% Winitialize-settings

7 V  d" z( y* N/ }
) T+ G4 y4 W2 F" Xcrt people [setup-turtles]

" v3 i2 F5 n$ d, q3 c- a1 M1 {* G, }: d" J
$ R1 k4 `, S* freset-timer

. ?) Z" N4 t6 x; W0 d) r6 R
4 G- Y1 T5 z$ P+ ^; lpoll-class
- C3 @! q$ V( g: k

# l: g5 A1 h: M  {: @setup-plots

* m9 b! @2 r+ V! r, _
( w  \! l- @0 @. {; ?& J" Z: Vdo-plots
/ y9 F5 f: V8 v! Q# w$ X9 I0 y
end
( f3 o  O8 h, l
; m' R2 n$ K/ t1 ]+ C. bto initialize-settings
8 Y- L7 Y: v! x
. v" u5 R3 r- ~3 e' m( bset global-reputation-list []

1 A2 a$ r2 W2 A  |
- I5 ]( w. c7 S9 I% K; mset credibility-list n-values people [0.5]
+ ?  o, r) S: o7 n$ {9 x6 X
) u- a% n) n' k! F+ z; U
set honest-service 0

! U* A5 i. [0 ~, t$ r) j& W
0 X! o, [5 ~: m; e1 |" w: Sset unhonest-service 0

* q3 s$ i) v' G5 [. F# q9 `/ B  U
7 L- H0 J' J; t- H# uset oscillation 0
4 C8 e: H! B3 d3 f- N
+ b5 A6 z& V, M
set rand-dynamic 0
" O! |& i6 O5 |- E4 z( _/ j2 i
end( k/ L7 d# F2 X4 ]2 n8 u
/ d  }. {' Y7 C! M. f% X! `/ S
to setup-turtles
+ e. X, _, u8 hset shape "person"
$ q$ }( |; v; l1 ~% X" |setxy random-xcor random-ycor1 Z% T8 R0 G! j  Z0 t" [2 f
set trade-record-one []
! Z7 l: w5 s9 W
. y4 k. R3 g; f4 `
set trade-record-all n-values people [(list (? + 1) 0 0)]
& r2 d1 h. l" q, e8 e6 C
$ m, J# Q+ t" a8 y9 f* T/ T
set trade-record-current []
9 e- A3 V4 M- e2 X5 l) X/ bset credibility-receive []  u, i  k2 [# X. g* w4 m  s/ y
set local-reputation 0.5
  V0 m4 U8 Q" O2 ^1 Gset neighbor-total 00 {9 k, _$ i2 O: x6 O. ^
set trade-times-total 0
+ q! w& L' Y  t0 Nset trade-money-total 0
" b1 K; b" F1 C/ B' e* ^7 V* L* lset customer nobody! F4 O- i' e7 [0 C0 ~2 ]* m
set credibility-all n-values people [creat-credibility]
2 H  p" b- w2 Z; Rset credibility n-values people [-1]
% c# T) k/ Y6 J4 n: S4 F0 {. Z/ lget-color
5 G& D. B6 @+ W4 v0 X; y
. N. ^8 Y% o( A& P) {" M
end) W% o' N' W5 ]

7 M- j6 z+ j* X3 ^" P  Y* Y: gto-report creat-credibility# c: R1 S$ \  r0 D9 x" |- k: ^
report n-values people [0.5]
9 @* t" y& I. U1 Q4 nend
, ^/ |5 ^% _/ Z: m5 q7 E( R# I  p3 F, u0 A
to setup-plots
9 `6 A: c/ F* _. {7 t2 `
9 k" q- ]$ c/ F) r$ g. fset xmax 30
) T  X/ a- ~# u# o+ W* v7 p

6 w! ]6 {8 d6 l9 y, l) y  Q" qset ymax 1.0

* S+ s5 ~  `# p+ j" g' l1 ]
) Q. z( k5 |' T( V/ u) Aclear-all-plots
( n, I( P1 Q# a, I) K
/ }6 R: l* R* P. Z0 f* V) N
setup-plot1
6 r7 V& _# L6 p1 @+ a2 e) c( o

1 L6 _( E& s$ s% f: [setup-plot2
& W9 X& |/ s. f

4 F: Y9 [" R9 @& N, }5 g9 msetup-plot3
& f4 @9 Q0 U! _( A5 x% q
end- G( Q. l5 L; N9 \* R: Z4 K$ ~
( c6 L0 T0 Y# `# F! [  J- D
;;run time procedures
7 H2 A0 E+ h, Q8 z4 x( [7 I6 o' G9 O
to go8 d8 K* C$ `" j6 A! }: r. a
6 m+ [; N$ ?; G0 z6 i1 `
ask turtles [do-business]

& w7 E+ p0 k* d$ B1 X/ gend. R' g! ?9 L. Z9 D% c$ ~1 a$ j

: z& |2 I; e8 C8 |+ s* m' F( Dto do-business
* v; r) Z* N  q- e8 S; A# T# w2 k
9 Z# g1 e4 Y. F( X1 k
8 N1 ]# W  C+ I
rt random 360

! u" O( I: O7 f2 ?6 }
8 B# Y& q' i  yfd 1
$ ~7 Y" U# V6 a% q

/ }: N7 P, q2 rifelse(other turtles-here != nobody)[

, f2 Q/ L0 a3 @* o: ^& w; r3 M- U# h8 T% s. T0 `# u/ \
set customer one-of other turtles-here

+ S2 Y' j& B2 G# ?9 j7 V4 C5 u/ D  ]4 V7 k( ]
;; set [customer] of customer myself
5 _% L  n( r3 r- Q- a& z/ F7 c

! X( m6 F# `+ ~; k% eset [trade-record-one] of self item (([who] of customer) - 1)' ^* i* j$ |" h$ i% Q0 n
[trade-record-all]of self
: n8 B7 B# e% t6 v9 s8 ?% _: n;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

) ]4 v+ B, B  ^' z- U! H1 f+ V6 b4 x' n, s% ~$ b
set [trade-record-one] of customer item (([who] of self) - 1)' l  n) G5 \  {0 c" H6 p+ e
[trade-record-all]of customer
7 R$ ^# o! J/ l1 q" k' C( c
0 F, u9 g0 y* W: F
set [trade-record-one-len] of self length [trade-record-one] of self

- l" ~( n. C" r. c9 u) a$ H1 Z+ B( a" F( d5 n
set trade-record-current( list (timer) (random money-upper-limit))
" c  [: w( h% Q8 C
: n" K- x- q! K5 v: X
ask self [do-trust]
# H! g9 g7 ]7 F* G;;
先求ij的信任度: a& l1 M# I9 `6 i- z9 S( z8 ?
5 L0 Z( k$ A- ]0 e3 a) S4 M/ V
if ([trust-ok] of self)
, R) ?0 d5 y$ U# E;;
根据ij的信任度来决定是否与j进行交易[7 n7 e5 G" W0 ]5 r
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself7 h% c% c7 c0 g- P& j2 ^8 N, u/ e
* K# [" ]& m) R) {5 O( p) d
[

4 O( }7 H" e" t# q+ m
/ B% I9 q) g5 I  `- bdo-trade
6 H. ~, x. S" ]" V2 R

, {* J3 \/ L( _: M3 X7 G( Rupdate-credibility-ijl

% a4 S* f  ?" \$ B8 g* [5 h% l$ z5 J; k/ X0 X. {5 x0 q. [/ S
update-credibility-list
: n) x8 @! z  x( _
5 }% p4 Q2 j* B, ?. C1 f
8 x  q5 q2 c2 Y& n& w! s! Y) {
update-global-reputation-list

. e1 t( c) _4 {# ^' [1 l: Z+ k+ y: D, @6 o$ C
poll-class
* i: y+ ]* h& h0 X

- V4 z+ x9 L5 t3 O: Eget-color

( p, K, w0 |1 h! r( o5 \6 M3 y6 M8 u8 u4 C( r- W* _( K/ U' I
]]
; E4 K5 a/ l5 q
5 ~; q1 Y- O! i; y) ]/ t3 G;;
如果所得的信任度满足条件,则进行交易
1 {1 F3 i* K* Q& J
# K% m+ l) @9 @1 m  g[

7 ~6 n6 j1 M* f" ?
" V; [+ w; N) frt random 360
* }  u% }, j  ^$ K6 j* G
, v7 l3 ?. R  L  \( v7 p
fd 1

  m, q* d6 i% n- U  f0 i' P
8 Y  |5 B+ y) Y# Q]

/ v; F; j- N' V( j8 w. e2 p9 {! r  Z; j1 T
end

' S+ j: L+ ^7 [) a: B
8 ^7 y1 @" L; X6 G$ B4 Z& Xto do-trust
9 v& i' N9 H) rset trust-ok False
4 O; l) P4 \9 v4 q, d, g8 h
  e! M* u7 G2 c
8 R" k) Q; {' @! R/ \
let max-trade-times 0+ J7 v6 l( Y" p/ L. G0 p
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
, c0 I! I' y5 _7 i' |: h& |* Vlet max-trade-money 0! Y0 I  p! R* P& H2 A" a
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
% y4 W" Z5 z7 {' J* Olet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
/ C/ T) S, r% x, }2 T/ v7 k, g$ h$ O9 U7 L. u5 t" J$ {

& [9 y' ~4 \+ c- e! c4 I, {/ Sget-global-proportion
  c7 P9 O; Z0 X" A" {- X4 Elet trust-value
8 c3 ?2 A" M$ g5 ^; ]2 ?+ o$ p9 [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)
; o* }5 K: x# W! K7 `: e
if(trust-value > trade-trust-value)1 T( o' Z* K0 P  l/ }
[set trust-ok true]) t* R  r; J% o9 T
end* ?; W1 e6 ^3 F, a9 P
) K9 ?0 E1 L" i) _2 K( H
to get-global-proportion  P( ~4 t- K$ r( X/ w5 h8 o
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)7 f( w( E+ n1 d, O" j
[set global-proportion 0]
1 z; M! \4 T) j( ]4 _% I. C[let i 0( B2 j$ ^5 H' {7 r7 G# l
let sum-money 0, O- s( w- `9 f( @  x& s/ h# I
while[ i < people]0 o) F1 ?% b) h* b0 P
[
9 o: i1 r. n6 n2 l0 B  L8 m2 \if( length (item i/ Z1 R0 n6 K& H& I% v
[trade-record-all] of customer) > 3 )

8 U( r0 Q* w1 k* ?4 B2 n[
; t+ a5 P& g8 vset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
8 v% S! }% I( P$ O# W' T! R]" X) Y4 y' w# @3 J" t6 J
]7 l. N  `9 r  K1 m& B+ S
let j 0$ Z$ D- Z5 f: q  Q
let note 0. Q) S5 ?4 P. B2 x# a( C0 r
while[ j < people]
% v% C/ [3 U3 Y$ v9 c9 Z[3 s1 g1 J7 G) e
if( length (item i
/ `2 ?4 R, g: p0 A. x* T9 a. [[trade-record-all] of customer) > 3 )

+ ]8 I1 ?) b% l# o[4 [# F8 k) t6 n, A. q( M
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
3 B5 k$ a7 K# Y4 ^[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
, L, l# v5 r% a8 z# s, b* I# u# l- }[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
0 P( |" c# A% @" K# S' K]
% V7 [: K( H6 U; o. T]
. _9 v2 ?* M/ S* ^set global-proportion note; d5 s) t( F& K2 u2 ]! Z
]' Y* L: G+ Y5 U* N' j7 A# }
end# ~5 o: x$ f* {. Z  M3 z

( r7 p2 r* e; L, |. b. X3 V8 lto do-trade
0 c: F8 A6 D7 }! f$ {' i- O- H3 W;;
这个过程实际上是给双方作出评价的过程% g7 j9 E0 A8 n, ~3 p! G  z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价+ t; x: I( a) D" T5 K" H; Y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
% u. A  G5 u$ U* aset trade-record-current lput(timer) trade-record-current
5 M9 z9 v$ j+ X# V, S1 [;;
评价时间; k+ C2 t9 W) ?7 l7 M/ L
ask myself [7 g- A) Q0 x$ `. @& e
update-local-reputation
8 o5 e  \& g( `# Fset trade-record-current lput([local-reputation] of myself) trade-record-current& b- d. y0 H' V7 U3 z% E' V/ k
]8 O# e0 i: i2 m6 a: u" X
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
& J/ X# Y  W' h4 Y" J;;
将此次交易的记录加入到trade-record-one0 Z' _4 k2 C8 a& H
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
- C( |) v: A2 O/ Z! klet note (item 2 trade-record-current )  `/ |6 Z& c0 f6 r
set trade-record-current
9 E* E6 K, X' _(replace-item 2 trade-record-current (item 3 trade-record-current))
( f/ K( l- n* {% C
set trade-record-current# F" B+ f) [: r0 n2 t9 B7 P* F
(replace-item 3 trade-record-current note)
: _- z8 k- p* r1 `" L* @; F+ [# @) e6 `0 Y6 K& s; J5 z

  @# U: l+ _5 E4 V/ _$ U4 Mask customer [
; X- s+ Z  A" N* Eupdate-local-reputation& E7 ?; s; M4 v
set trade-record-current
" `. a6 c+ f- w( h9 V, F: H(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

9 o# u4 q! s6 T% []" m& b: {4 j+ q" p$ @3 s( i

3 b1 Y4 G& A: a  f0 |3 d. j# C

  D. k1 }, W& {0 b& `set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer1 X  l0 K% o* B% x& b

  m5 k5 o% S! p' pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))7 D, O: M+ n# p" o
;;
将此次交易的记录加入到customertrade-record-all
1 d( A# E/ Y+ ~3 l8 |3 Nend
, u) n! l" ?8 l
/ e% Z2 r* Y7 @7 j8 z* Z- M6 Bto update-local-reputation, n# a) ]6 r: n+ b" @0 O$ B
set [trade-record-one-len] of myself length [trade-record-one] of myself/ N/ e: Z' n( o2 ]1 h* \

- n' r. n  v( I" O. e) g) P7 z
; a. g9 [3 e3 b0 ?% r3 b3 h/ U% L;;if [trade-record-one-len] of myself > 3

, n* M+ _  n; |& R& Y& Mupdate-neighbor-total
" o# S7 p8 c3 |' o;;
更新邻居节点的数目,在此进行
! ?* r  ^5 V2 M- E' rlet i 35 I% C! P; H: ~: Z% m& o
let sum-time 0( k/ D! h# f8 m- R
while[i < [trade-record-one-len] of myself]: h2 z8 q  i* V0 X  w4 a& h1 Z
[* {* `5 A( }; |
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
- f5 `' f" }$ p) f# [9 \3 k" iset i
  S" @( ?! ~& v9 U& C6 c( i + 1)

6 Z8 }% a* D8 \% s  {5 p) _* N+ |]
0 A$ m5 o3 N- Blet j 3
. P1 q: m1 t/ [" s! elet sum-money 05 g& Q5 [* H/ @% g. i
while[j < [trade-record-one-len] of myself]
+ c+ U; ~+ }0 a% @[
! m; i6 t+ h& D) u3 e7 t3 w- nset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
7 c- ?' Q1 T  R$ Tset j* R9 E1 [9 ]& ]* @
( j + 1)

" z% c4 a. d! m, I6 x) d! S]
5 x' s4 ~4 C% F" {$ r+ klet k 3
' @, R- j# j$ g4 Llet power 0
2 d$ J' t& h7 y5 [) k  Olet local 0
  Z) \% s( _- G1 `. Jwhile [k <[trade-record-one-len] of myself]
8 A- z/ V4 O3 F, V; |4 U/ x4 z( B[
: O& l6 ]. R0 e' d; y; j+ z# ?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)
0 N' ^/ n( G3 X) a# m" j- Sset k (k + 1)
4 S/ k# M' Y. w/ a. U# C]2 ^$ a3 |, S9 f' z2 y/ _
set [local-reputation] of myself (local)
9 R  z: e8 Z' Rend
2 {; z" a! e, u& j4 |! y8 `1 s0 u) _" ^  |- K6 B$ D: Z
to update-neighbor-total
6 R' d2 H$ j  i8 r3 c8 J2 G' Q( Z1 R5 D  f
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
) \0 }8 {, u. ^3 I! p
4 U4 g! O# w4 @  `

7 h' o5 [( L- o, R, Yend3 d. i: {' q9 [# _9 D6 x+ h; a! ^
2 P) `  O6 V( |  X7 S  V2 i
to update-credibility-ijl 6 X+ q) Q" I1 P
0 e, Q# A- `) r; f" k
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
* U& g5 h+ H0 f, U$ @* plet l 0( x. |& o. a; i% [% o- y0 W' N
while[ l < people ]6 l5 _% W' g  P
;;
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 ^3 a& I2 }[5 g0 `0 s4 c/ x( V/ p* Q* }9 A
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)" g# F9 V2 }1 J& K& Z; o
if (trade-record-one-j-l-len > 3)& k4 p$ O: c  G/ `9 p$ B" f
[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 v6 H+ }6 t1 b9 x8 V
let i 3
0 P- M! s2 j( a% nlet sum-time 0! X- s  \/ N0 ]
while[i < trade-record-one-len]
+ M( [0 D7 t5 n8 ]8 C! z[
* H9 j! y* V! J6 gset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
: j( v8 i  c8 }9 i! v8 \set i
, y1 m  v9 |+ q; b" Z7 \, p( i + 1)

7 U( Q" z5 b, Y1 x]: F& m* Z5 P1 f! z8 T5 d/ w
let credibility-i-j-l 07 t. F: P. Q7 e( c5 g6 i. ~! _
;;i
评价(jjl的评价)
- o  J* s: m$ Tlet j 3
7 H9 N8 E8 s& Nlet k 4
9 ~( `% F" a2 Vwhile[j < trade-record-one-len]$ v" J" @! E: X/ j- J5 e
[
! M+ l" [" `5 hwhile [((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 _% b) j1 i! p8 X0 Qset 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 @& R4 |- L3 S+ Xset j
7 M: t+ o1 \% h4 Z3 p( j + 1)
! o1 a1 [; B( E/ C  d! w
]( ~' W) K& N' F+ e7 n
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 ))# m3 o$ B4 o7 I

" B9 y( a! F1 C" I1 M6 Y

  f: i. b* T0 _" h5 Clet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))2 d: e9 m4 m4 J
;;
及时更新il的评价质量的评价
2 D" K, P% O5 K7 rset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]( l5 A5 v  t+ C, `; F' h
set l (l + 1)! Q! j8 f- ^; t( |' N* Q
]
9 \% O+ ~- [) Nend1 p$ J2 }# {& V' v

% k8 t$ E0 z7 L7 L8 X+ S( Wto update-credibility-list
% U6 N1 ]3 g4 v, O6 {# I( [let i 0
5 \3 B( J) \$ D5 w' [+ ywhile[i < people]
( v' f/ {- R; N6 b+ D0 n0 A[/ \: ^; ?6 _4 p9 Q9 g, L5 m4 v
let j 0  M& b& u& P  _' v$ ]# i  ?  W6 J
let note 0! h. u( J  g4 y% V8 \
let k 06 y9 c+ f! u- f9 N/ h7 H1 y* a
;;
计作出过评价的邻居节点的数目
. G$ a2 H0 Y3 v7 `: Awhile[j < people]
2 t2 Q* ?2 J3 p! Q% s5 R[  f! u/ A% T1 I9 }: k, X7 j/ W
if (item j( [credibility] of turtle (i + 1)) != -1)$ q' x% ?, p, r* g; _
;;
判断是否给本turtle的评价质量做出过评价的节点# W  Z! ^. ^1 [; \  Q, |. k4 D
[set note (note + item j ([credibility]of turtle (i + 1)))
; w5 N2 O/ Q6 g2 I- j% _;;*(exp (-(people - 2)))/(people - 2))]
; B' z: }# |6 Z% }6 C( s
set k (k + 1)7 S0 ~, {3 ^# F
]! L# D  K' [7 {6 q! z
set j (j + 1)
1 G' j& a: ^* I6 }# }0 ~]
/ H, z5 \, `9 B$ V1 n9 ^; Rset note (note *(exp (- (1 / k)))/ k)
8 E$ |, {0 _) S4 Z) ~9 u; Tset credibility-list (replace-item i credibility-list note)! Y+ S* \; ]$ ~7 X% A
set i (i + 1)3 B' U: H% k% Z( J% |! y; S; P' G
]
( ~* f" E6 [2 \- Kend
* R" Q& I7 @) t4 K0 @- n* Q+ T% l- l6 Y6 p/ w- a
to update-global-reputation-list0 _/ @3 }5 g3 v: {
let j 0; v6 M3 }. l: |+ g8 v# p
while[j < people]
. o3 o( a' A% q7 \; J[
% f$ s. U, H# _3 h1 ^let new 00 d1 h- o% _$ S) ~4 `
;;
暂存新的一个全局声誉
9 G2 X5 [. V) f8 j* Slet i 05 I$ T. a7 u6 q8 g' F2 ^: o/ j7 y
let sum-money 0
! v, q$ i2 M* n7 z$ Y6 Z# u; nlet credibility-money 0
. [; g8 Z. v1 g: @1 p; i0 C0 }* iwhile [i < people]8 Z) ~5 J; |- e
[+ i+ ~# a5 t- X' u' }: Q1 F6 q
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
# U- y$ ^* y7 W- o7 K  L$ Cset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))" b$ Z! D$ A5 y4 p
set i (i + 1)
0 W! y7 _2 f' {]" K7 P, ]1 S  a- _/ n
let k 0
, `+ }  W( I' k6 T8 K, Y4 ^let new1 0
- I4 |. Y9 c' w$ ywhile [k < people]: K4 q$ E) G5 @3 G" Y
[
; \) |  G5 z! t$ W: T; yset 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)3 S, _) t2 s. {" V5 K
set k (k + 1)* A0 R# l% I, n( a2 G) _: R
]5 `% t1 S% ?/ q5 j/ I
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
7 i! t# [6 [! n2 t& Cset global-reputation-list (replace-item j global-reputation-list new)1 f2 O% ?, q9 D9 @, f) y
set j (j + 1)
. ?2 C6 y6 `& L]6 r  v4 @; t1 C6 |
end
& _: K3 a9 X& w+ X/ R6 T2 m8 g$ U7 r
2 x3 S+ K: W- V$ l9 S. W( r1 J
5 d1 I& _+ H0 W: l0 u
* w. M1 p1 k, Cto get-color
# W+ M  W8 k& ~5 I  `
" f3 M/ M% ]% `: F0 v# iset color blue
( U% D$ |5 U# t! M6 n  I7 U$ [
end
9 I6 ^2 V# f7 Y& G# H9 o: J, u/ X) |2 V8 }9 x
to poll-class" D- b7 F7 V. s6 E
end" c  _- m( v1 `5 p

5 g% P$ n: g1 U  a7 G2 Wto setup-plot1  }6 ~* u1 O# L$ A# x

5 B' @! s3 C5 h6 G* V0 @3 _set-current-plot "Trends-of-Local-reputation"
: p0 p! W: V4 X; ]" Q% K/ i- W
: z3 w) ~6 k2 J. d
set-plot-x-range 0 xmax

" [. K; a- @" h% T
8 o! k$ t# ]1 _' _  Iset-plot-y-range 0.0 ymax

- q# C* R4 o0 l# Pend5 ~# A0 K- c8 @+ A- w6 o

) ?  Y5 q* e- bto setup-plot2
' D" y+ s; A! \! M" R) K7 K. i
9 Z# h- e" S' V0 Pset-current-plot "Trends-of-global-reputation"
( `$ V- ^8 |4 }4 \! `: H% x
, G, s5 v- E- G& J
set-plot-x-range 0 xmax

* c6 {1 |* a- Y/ R
9 L) r8 |7 Z, {8 `, _3 Oset-plot-y-range 0.0 ymax
6 E! J% O6 P2 a
end2 @9 [% I, I* X& u/ T5 @
! d* C3 P9 `/ w% W) i( G
to setup-plot3! O0 S7 l, P& H8 t0 [6 a8 P  I7 a/ @9 y) w2 ~
  F* ~( ^5 C/ K2 C
set-current-plot "Trends-of-credibility"

  z. s6 `) r4 D- a+ i! i0 c2 X6 j
! j" t- ^4 E7 a9 t: C7 ~2 I# Q8 Kset-plot-x-range 0 xmax
, j+ B. j1 G2 a* J, R$ R
* V8 Q: D4 K* B. h- Q' y% |1 i
set-plot-y-range 0.0 ymax

. z2 o1 j& M" ^1 s, t) @) Kend
( _3 ~1 s7 J6 d+ y2 c
0 K/ M$ {  k; W$ B' t  \: y; \8 U' I4 Ato do-plots. j2 C5 s' x+ I% b9 @
set-current-plot "Trends-of-Local-reputation"
, g2 p$ T# \+ \. x0 \6 D+ S) N$ Tset-current-plot-pen "Honest service"- _7 s5 |7 d$ V! L" p, M: F, \# m. A
end& y. U. F( Z! g1 A  ^9 X4 N
% c7 `1 P8 C9 [6 Z  u1 s6 w+ S9 j3 g
[ 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 B( n2 p! ?* o0 }6 m2 U$ i7 }% y7 [0 P
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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