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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:
7 o  T5 n3 b/ P1 sto do-business 2 z8 j% O1 G! L7 z! Y
rt random 360
( [/ G4 ]2 b9 S4 ]& }0 C7 n9 q fd 1
  N; N2 |7 ?1 |; L! j3 I% ~ ifelse(other turtles-here != nobody)[
! a- J& S8 q, L1 x: Z   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.
, j1 h! s, D& B* ?   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    & Y7 a8 F1 a6 c' Z* @
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer% A" @- F/ }# k
   set [trade-record-one-len] of self length [trade-record-one] of self
8 C/ R, C! o; y& T3 ]   set trade-record-current( list (timer) (random money-upper-limit))$ {) w8 b. F! Q4 w, t, s
, d& e4 A0 G- J- l4 n
问题的提示如下:
! b9 w* V1 Z- F. w
  Y. Q8 W) a! G6 k  R, perror while turtle 50 running OF in procedure DO-BUSINESS
9 g& s. a0 w# L0 U9 `0 J( u  called by procedure GO! A  B" k+ p  _8 R4 i2 d
OF expected input to be a turtle agentset or turtle but got NOBODY instead., o- ^- ]) Z; c
(halted running of go): [4 A# ^" l4 a6 w( O) w+ W& s

5 W& Q" m! C3 w1 u$ W  o. d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~~
# P. S0 Y4 A9 ]3 w- S& @& G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" ], X: ?4 F3 C7 \" ^, o; ?
globals[% M) e5 z# E9 q, R( I4 f0 O
xmax
* g) k- D9 J; i9 symax& E; W1 M, H7 X% o+ @" S
global-reputation-list7 _6 l. [4 ]' D) T5 u" G' M
. q6 ]6 P9 _9 y; T
;;
每一个turtle的全局声誉都存在此LIST1 W+ M; v  V) `- S  ?: T
credibility-list. J9 U& O5 A8 B# U6 u# k5 N
;;
每一个turtle的评价可信度
( E% S6 R! _+ ]5 y: \" Shonest-service
/ ~8 L# X; m7 O1 Y3 punhonest-service
' ~; X+ e0 F6 f  j! E" c6 Y# S: M' l; toscillation
* o$ b$ z+ M* z0 Zrand-dynamic. u5 n" y6 P8 y8 y8 _/ D, x- z& C: R
]5 x9 k5 A; U3 i: T: e
3 Y' a9 l- e% w7 \  }
turtles-own[
0 \7 Q# p1 c+ {trade-record-all" U: }3 n( q& _/ j% ?
;;a list of lists,
trade-record-one组成4 g8 u5 D1 d4 P2 S; z* l
trade-record-one" Y# i4 ?9 [7 Q+ |- ]
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录7 O+ a7 B& r9 K" l# J/ j4 K. p+ @
& ^3 O7 a& U- f. D! C$ J/ r
;;[
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]]+ f1 n6 J" {. R/ E1 a. d- f1 u3 \
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]
) S9 L, h& G5 `- W) h! Bcredibility-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
# {) g# }" D, b- \% Bneighbor-total3 O. v$ w5 i/ K$ Y  _
;;
记录该turtle的邻居节点的数目
5 z' `( L6 l+ l: E( utrade-time
8 ]5 ?& p7 Y. };;
当前发生交易的turtle的交易时间. M& @# Z) C4 F
appraise-give
  i: n9 o. W1 t, _6 V+ d;;
当前发生交易时给出的评价
% s1 u# g- @: R/ @) c' A5 O' u" Mappraise-receive
! c9 A' ]/ \& {2 y;;
当前发生交易时收到的评价  |- X. Z) v( y( `
appraise-time8 n- g, p8 n' F5 _
;;
当前发生交易时的评价时间* _# q/ D& {' b
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
8 w! _" A4 v/ I& qtrade-times-total
% S# H* Q4 X- `9 t  C;;
与当前turtle的交易总次数0 B/ B. I; H2 n7 ^# ]
trade-money-total
& M# `  V" Q$ J- D8 B;;
与当前turtle的交易总金额8 I1 k  D: w4 e1 u# J$ }: s/ I4 ]
local-reputation
! y1 @% x1 l. s! x+ ^4 yglobal-reputation& _0 U  c; a2 S1 r* y! O
credibility
( |+ a4 i1 u, R;;
评价可信度,每次交易后都需要更新
1 m% u) M/ D0 P' F: Tcredibility-all
: `$ \. C" W  i6 m. r" H) };;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, F1 U+ y4 r. T5 x
2 i+ f; ~& z: q0 t) q$ {3 u' J
;;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
# R/ u( _. Z- i2 i! H# Y6 C" xcredibility-one1 ]' t5 N4 a. |3 K
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
" m% |; w1 ?8 c) n/ Y  o! \global-proportion7 h  q  ^: [4 Q1 K" w
customer* _1 p$ I5 e& n; f
customer-no8 I9 u% F$ {/ d) g# e
trust-ok( h7 O3 c4 M$ w
trade-record-one-len;;trade-record-one的长度3 j7 r0 d. W% D- I& ~( _. M. f
]
1 `  d( h4 A7 b. n. [7 ?4 `5 e+ m, s- F9 Z) ~9 G4 j% c) @- O
;;setup procedure
" e* r1 U1 H6 e& Y4 s" V4 k& L& `# x% a+ D4 m: z: |& r
to setup
; ]" _- C6 Y4 {+ L8 R# i" G
( z6 u' b/ U* E8 Z6 o* }ca
7 }% L& w" Q* u1 T& ~! M' [2 l
9 D3 h$ y9 T% D2 S' A3 ~9 c! u0 s
initialize-settings
$ n; \1 m1 m% ~: a& r' B" _
4 G% @, I: j: u# m3 }7 v
crt people [setup-turtles]
+ m1 g: E" R: w

" {5 C) N- C2 G9 V0 {" D5 ]& b4 ]! Rreset-timer
! t$ ?" B/ F5 `# P  a

6 T9 f1 b2 G" xpoll-class
. i. w3 r" z& S6 \6 M
) r( R" j$ E4 _1 w! D
setup-plots
' X! n( W1 g& Y+ R7 p1 e8 l
: ^2 a2 K& a$ r% @2 G
do-plots
4 N. [2 _" X: W& g1 S5 ~' k
end3 X/ g$ @& w; n( a0 N) b; u

5 V+ M6 P+ Y0 uto initialize-settings
' D9 h5 z+ U/ Q% L8 E& ]) v& D& `* b4 Z% j* n
set global-reputation-list []

' W! D; E' t% E+ F! Q: i6 O7 K/ L* \  Z: R# |' u; _6 d
set credibility-list n-values people [0.5]

: ^) M5 E9 k& j
" L! H$ R* i8 _* B) U' \set honest-service 0

3 E1 ^# X% s' g4 w0 o
  w$ h) V5 A! h* {3 G4 U/ Gset unhonest-service 0

0 L: M+ F1 o/ O3 a& O8 T  E) v1 o
set oscillation 0

3 W) i& Y6 Z7 o  b8 D+ X# J5 d# j
set rand-dynamic 0
# e! N0 m% G* i* O6 n9 ]6 j; t2 p
end+ x" s( l8 M1 g' u/ u

2 I  C9 L7 P4 J/ tto setup-turtles
9 t, A) C" Q4 U( b) I& B( qset shape "person"- ]' r2 \0 l4 }. x- W  q* l
setxy random-xcor random-ycor
' z* r6 d8 W+ T, O4 Zset trade-record-one []. I. r/ \6 E, v
# ?6 b9 h6 h* j, e! @5 W
set trade-record-all n-values people [(list (? + 1) 0 0)] . F. ]/ M) F) W" [7 z

7 N. L/ R, q' c2 v" f5 V! Dset trade-record-current []
: q/ ~( B; F) f) V. gset credibility-receive []
. I' P/ ]* T% C9 s+ k1 Uset local-reputation 0.5
/ ]0 {3 I  z/ K. e# Y# Vset neighbor-total 05 x- E' ~9 G8 i" c) s  [! P/ Q
set trade-times-total 0
! l0 i( u8 L8 gset trade-money-total 03 _/ g* }. [" \+ j
set customer nobody% V$ D4 L4 b2 I3 ~: W/ J7 H
set credibility-all n-values people [creat-credibility]
/ E$ u! \: [0 p7 @set credibility n-values people [-1]8 ]" [7 o# |0 [6 t. v
get-color5 O; z/ J$ f8 H5 Q4 t8 U8 R% D4 m
7 M  @4 C) P5 z: Q
end
  j& h* [2 [7 P% F  b" d& ]% l5 s  d$ S
to-report creat-credibility
7 U" N3 S# N7 ]; |. }  Kreport n-values people [0.5]
7 f# K: M, A- g# z+ K$ qend$ y- }( r5 L; X7 l
8 R* A. ^  z" Z1 G# M( j* [( }0 h# Q
to setup-plots  `6 g* J$ u% r  u2 j1 I0 Q
, X5 m8 Q6 A- I0 g
set xmax 30
9 @; a+ h  @- ]  ~+ P

$ _- b- z7 ?% b, _! m3 K6 F, mset ymax 1.0

6 E- b8 H$ E* k7 U! s0 ~$ C& A
% A* W, m; p) A6 w' J4 Gclear-all-plots

" S; a0 z# e# e- }$ O/ Q: ~
( ]4 C+ `6 F& ~& n6 j, \- jsetup-plot1
1 E6 y' X; q! X, V+ x. d8 M
! m3 f' }5 A* V, I& p
setup-plot2
6 y8 O1 K0 ~; V) G3 P# p8 @' l5 M

0 z$ z: B! K7 M3 C* K7 csetup-plot3
; F% U3 a8 l2 `: Y
end
; W8 K; r2 I4 _: @& i! M4 q' g8 ?7 z! p1 t% n0 s2 t1 c
;;run time procedures
; g; x7 m! D8 e$ T2 z- q) h' {) W* b$ |! f& S. j
to go9 d) E# w, L/ Z( Z# Q. \9 \
9 f4 `& f$ ?0 r# G2 l. S- T
ask turtles [do-business]
; X9 R  H: X/ X$ V) L, j3 P1 K
end
( \5 S! {9 L; w1 X# s/ z' D- y2 d* H( b. b
to do-business 3 a5 M4 f7 m% ]0 M

6 L# h& y! L' }3 d: m
  E2 [9 d+ a0 X6 @" n- e; Nrt random 360
8 s& k- i: S) b
6 J9 i$ V8 D0 G* A1 E4 v
fd 1
9 J8 w$ h) K' L- D# a

) s  t5 ?; k- Q$ a) o3 [, V9 }ifelse(other turtles-here != nobody)[
, ~/ Y2 ?) M% @

1 `1 g: Z  V9 z% `6 Bset customer one-of other turtles-here
; R( M4 R' |5 o) V! N2 C' t

$ c# h9 F" ]. p/ j, C% i* t;; set [customer] of customer myself

# Q! a4 E! O: c4 h) J: j9 x4 @! S4 \% d* b% R  N
set [trade-record-one] of self item (([who] of customer) - 1)+ \( |: e, m. \# Q1 @
[trade-record-all]of self
% m! n( u: s" i. N/ T6 u/ b, z;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

+ L' w- Q5 @: R5 u! y# X; Z: E: q( h- r
4 g0 R3 r0 }; e) {, sset [trade-record-one] of customer item (([who] of self) - 1)
# l9 b! s" z- r7 v; y: O[trade-record-all]of customer
6 k: c0 A7 c) C

' M1 A( p% B6 v* b3 Hset [trade-record-one-len] of self length [trade-record-one] of self
1 T/ S8 g7 e8 [% Z0 B  S4 N

1 K' k! D1 t8 g+ I' Nset trade-record-current( list (timer) (random money-upper-limit))
. ?, q& \$ l; y  x# s1 U1 t
2 t: n7 Z$ v2 Y* W" f0 b4 R
ask self [do-trust]4 s4 w* [9 c6 \7 @5 y
;;
先求ij的信任度9 s" @' e2 n' q
* C* S6 x. k3 v" n/ f
if ([trust-ok] of self)6 @; R) ~4 \& r
;;
根据ij的信任度来决定是否与j进行交易[
* m) U9 Q+ c- G( E) J( uask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself9 j& M7 }6 @  f: N3 c/ Q, z
" k6 C) P; m% z6 S! h) w9 P0 D
[

- X4 M/ C! B; G; x7 ~. r8 k; _: j- m- K- Y. i+ @0 q, W. u* |5 T
do-trade
6 Y3 l$ D+ ^; {( ~% u
: ~9 H5 w# Q  v( U
update-credibility-ijl
$ }. [, g0 `5 g
: E% {6 u! \. B0 h
update-credibility-list
2 V4 K+ {; W, M/ k
2 o! `0 B5 x; P

' Y: s0 K' X" u1 O1 y1 p6 X( h2 lupdate-global-reputation-list
* ^" t9 z/ h. ^4 v' ]

. L/ @" {$ z) _- [$ a( zpoll-class

4 c# f" a$ K( W% U( U7 ~/ }2 c8 c6 b' t! \$ j% x
get-color

; k0 V$ ~7 X8 P  i. `# ~% i
" p% D& ~, f  [8 f]]" b& \4 V% }% ?9 \6 l

* n' m, N: g/ v! a;;
如果所得的信任度满足条件,则进行交易
8 Q" s: l% a) N  z* `) k( E& b3 l2 N" M0 [" b
[
, t; L; E# O" t$ U

; H, x5 m7 }. r( W$ a5 [rt random 360

6 |! [7 L- x! N* d+ Q3 Y* m# m/ [" Z8 {  i3 e, U* e. `
fd 1

+ O- W4 l; U* I* T: f4 S" A4 s" I* i4 y8 {
]
; v4 t! C6 @7 Q5 O

, }. m4 ]) A  N% pend
! V0 D, `: l) q+ |  U
! ?3 I- P0 V" A. i# _0 s  K6 `
to do-trust   n0 g% q4 B6 H; t
set trust-ok False7 f, q) u5 C0 F( h1 q2 f( e

* I' Y6 W0 U: [# _) b' @
4 e8 x+ m0 H# a; c6 x: e! L: Q9 G2 i
let max-trade-times 0
; @9 |: o; @+ A3 d! [foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
0 P6 q8 _0 J% d- }* G2 q4 L" Zlet max-trade-money 0
6 [* H4 i0 U* z0 s* Uforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
3 Q. g7 G: u0 p% S! O/ f0 Ulet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
/ p/ e8 D# C. p! F1 C
: H$ r9 j2 e4 f
, x9 `: w( g+ u' z- H
get-global-proportion+ h! ]# @4 e5 Y$ r# _
let trust-value
6 A* N  V- }7 E1 \6 Alocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

& N1 ?: c) T7 U' z7 {if(trust-value > trade-trust-value)
4 z1 e1 J6 v. l" m9 h% f: m; l[set trust-ok true]
( B" l) [( E. L( D) l! G- ^end
' K: M$ @5 m% L, }4 R, U; @- r: q3 i+ P3 f0 V& s
to get-global-proportion
+ n% k3 ~7 T* o! i% x& hifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)( o2 o0 b! V' H+ w+ t: l
[set global-proportion 0]
1 a% [! s! L  v+ Z( c" Q[let i 0
" V, ~4 p5 c' P, ylet sum-money 0
4 g$ r8 s% I8 v( `: ewhile[ i < people]
& j- T' L% H3 T$ s" \) a/ R[
2 ~4 X# ~9 `7 g* C% x$ j$ v# z6 @if( length (item i6 c5 H. z4 L# t, ~$ _& C$ ]
[trade-record-all] of customer) > 3 )

' ^* u: c0 s* \/ y% g# {[
% }" m; }. U7 M! o2 g3 Mset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
+ W! C4 S- l' b, f4 H, }]1 N9 k/ Q& c$ Y. d
]2 X  m/ |7 B+ v1 m; y6 o% D
let j 0
+ i8 K) q# o+ R9 _' vlet note 00 i2 s. b5 Y9 x1 i$ {
while[ j < people]7 O: A# }/ [0 ^$ W
[' i, d/ M* D( C# d$ S' Y  t: U2 B
if( length (item i
2 X; t5 n6 W; X  {. A  [0 `[trade-record-all] of customer) > 3 )
- W! z* D+ o. G$ v* m1 k. L, q# `
[$ i  z" p4 W/ S
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)3 A; |5 k: G# w
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
) B0 }4 m1 l& ^8 U' Q[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
% T) k) N6 p$ f4 `1 F]
: s4 z+ J5 i1 Y: j+ L" C5 C& j( g]% A( C- G$ [  |5 y7 h. H" q2 g+ W
set global-proportion note8 g8 m( B# J7 ^, L# s
]
: _( t9 m; X  V/ h; @( bend* I3 ]) l7 s2 B6 E7 F& o3 `# x

- b! Q5 l, l% U3 sto do-trade
/ n# Z' y! B+ J;;
这个过程实际上是给双方作出评价的过程
& C7 V: i( r4 o4 Y" U4 `$ Uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
$ m" X8 T% O5 l* u/ ?. jset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价" \& I! i3 h; p+ O
set trade-record-current lput(timer) trade-record-current) @  E  ^* O( I; u3 {& e6 l' P
;;
评价时间
) @$ k* V/ Z: C1 jask myself [
( O% w8 R; W/ b9 bupdate-local-reputation
4 ^8 g0 N$ \' N; ]/ Q1 s9 I+ iset trade-record-current lput([local-reputation] of myself) trade-record-current
  v- h+ F9 I9 I% |/ y, w  \1 f]. G) Z  L% n3 d  K. V8 N1 n
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself$ h+ e$ ^: h  a& _0 V0 q- J
;;
将此次交易的记录加入到trade-record-one- l7 m8 d# b8 |8 s3 u4 T& v! o
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)7 k4 C* f( Q  z# \; R" _2 {% {1 {
let note (item 2 trade-record-current )6 l6 D1 h5 `' [8 X0 j+ {0 L/ j
set trade-record-current% d- z3 n3 P. ~/ E5 K. d( Q
(replace-item 2 trade-record-current (item 3 trade-record-current))
& i0 v0 z# t3 a( F
set trade-record-current0 _- Q9 {1 Y  q+ Z9 p, t
(replace-item 3 trade-record-current note)
  B. J, `7 P4 @7 y+ v* [- n2 }% Q
2 B( U; ~% O$ s8 p
ask customer [) V: w* S1 ]; M
update-local-reputation
% u& C% ?# ?$ x" W- A$ N( d  eset trade-record-current/ q- b9 y8 h+ {' P8 l
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
$ f6 E4 k% d/ Q0 ]3 k8 M- [
]( r# G. z; y' O/ c
1 i$ M. E2 q4 n5 ?& D

. B2 z- g$ i3 r* }3 gset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer- y1 U8 X5 T5 ?( A6 Z& {  n6 m
, `2 g' }( \" }9 b3 B! l
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
" C; }3 Q, H+ R;;
将此次交易的记录加入到customertrade-record-all, O( x( h' q, m% V1 }4 B' h& Z
end
7 h$ W' G* }' A& Z2 \+ q) c" a3 m4 i& r: G
to update-local-reputation/ }$ i1 t- w  ?" z8 W
set [trade-record-one-len] of myself length [trade-record-one] of myself
. s) S$ y- o# J: a2 G$ w2 ^5 V' A6 R2 |+ A

& o& Z' V2 q- X2 t+ I, ^;;if [trade-record-one-len] of myself > 3

1 ]7 H) T  l, L* W% |2 T) J& A/ ?update-neighbor-total
# B3 ]7 D: W' `+ S( H1 @7 O! S) z;;
更新邻居节点的数目,在此进行
+ {* g" _2 x% _& i% ~0 F, Wlet i 34 ?$ z5 v! m  b
let sum-time 0; K0 i& G/ G6 K+ z) k0 Y; K# A8 D
while[i < [trade-record-one-len] of myself]5 d" M4 u8 a' m
[+ \% {- W: X. a/ v4 d3 C6 ~, Y6 F
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )+ D# r* d) E1 [/ Y! S1 m
set i
4 O: |1 f) ?, ?$ h( i + 1)

. w! D# u& H% j+ N]1 q$ U1 f- h1 D9 K8 Z! H
let j 3
& U# H" `4 B* B% P9 {) \  Y8 glet sum-money 0
' |2 k* i+ \0 z; Uwhile[j < [trade-record-one-len] of myself]" p  _0 W8 C! l! t  a2 n0 m
[3 r  a9 S$ H8 E( m; k/ ?
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)( k+ ~! V1 S+ x# d! h
set j! K- z$ g) {: h5 K# ?! \6 W
( j + 1)
% Q5 r2 f8 W2 |2 j9 Q
]2 d. q, V2 j, j( ?) i
let k 3
4 n: U2 ^, s# |4 j5 Qlet power 0' n0 B  S. P5 y1 U2 A
let local 0+ Q, m- H' c7 y0 x8 b
while [k <[trade-record-one-len] of myself]3 E0 ?4 v$ S2 Q, |( B! j1 G
[, ^# D( [/ \, ~6 E/ Z- [, L1 q
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) - E$ i9 v+ Q  s0 l" c
set k (k + 1)& T4 ?) k7 ?/ J( {+ u
]
# E5 t" ~3 h3 b2 X( f5 ^set [local-reputation] of myself (local)
0 ^( {. e; z4 u5 s, q$ _' lend
2 Z2 {2 w6 M% Q; I0 A! ]3 X  X/ K) d% c) Z. l6 ?- F9 ]% |( ?9 x, p1 v( K
to update-neighbor-total6 d2 u: O6 C: H6 `/ @: R
) N, ]' w$ S# Y
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
1 B7 k" U3 j- S  q# ~( F
: m  P3 A' o9 }; P+ g

& ?' W) b( p$ t. f+ ?/ T+ C0 gend: s* F! ~/ R/ B: F$ L$ G% N
4 u0 u( R, g6 v
to update-credibility-ijl
+ O' B9 i( z# ~% K9 ]5 f5 Z" C( z$ U$ j+ H; d; N4 s" V6 b
;;
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。8 e5 E0 \* r. `' f, O
let l 0- [* S5 n: t8 M' D
while[ l < people ]
# W) D2 g: }2 x  ]3 K;;
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* |9 ?8 L, `$ q2 N6 y% R; u
[
$ ^* m8 v8 x( ?let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
) A0 B1 H! ?( t! a: c, ~( Oif (trade-record-one-j-l-len > 3)' b: a7 w3 \3 B4 [  Q, b
[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-one% m5 }' _& B% x* A
let i 3; Y& ^  [" p' i9 I8 h
let sum-time 0
4 l' \% B+ E! A# _while[i < trade-record-one-len]" {6 F' I3 s  E( c
[
9 R- y9 X1 d) ^6 [2 m" Hset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )% t) |+ {7 [  W
set i5 Q" b/ n9 [8 E' s& R
( i + 1)
. P3 |$ ?( u9 @6 h* b, B
]
' a& y9 s0 l0 h2 [+ Zlet credibility-i-j-l 0
6 x6 s2 C5 F" {+ v3 f7 n+ C. \;;i
评价(jjl的评价)
" v9 H4 v3 X' {" A/ Ylet j 3
( c* A- \9 N* ]& R+ h9 d# w$ tlet k 4
2 P2 n; @5 m" iwhile[j < trade-record-one-len]
3 s1 L: P+ T1 e5 V" B- u8 G/ w[! \+ x' f1 u: T: B% x$ T
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- \4 B6 ?- K1 S2 k
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)
* R# I  t0 n8 [$ B8 R, V4 G# rset j0 n, U# H! o" G
( j + 1)
! X8 P5 P( P* T: [% x. t3 m
]+ Y$ F( V0 f. r: p
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 ))
& j4 r3 Z5 e) S7 ]( d3 d# u; i" _
+ i7 S8 E$ g& O* h2 l
8 G, @$ F* j& n. S
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))5 Y' U7 P2 W8 q$ b; O, A  i( ?" B) N
;;
及时更新il的评价质量的评价( m0 _' h! Z/ y! q* }/ D$ b$ v
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]$ z- I/ d# {2 s0 w6 w
set l (l + 1)
$ c) m0 y4 r% b  Q$ W]' Z+ _* N* A+ D( u0 D) q! I
end# P# Q& \, p  O$ o# u$ C

4 d5 \. r) u; m. `$ r& Vto update-credibility-list8 E. z5 o! |+ x
let i 0
; O5 x( `" ~2 d. o( \+ @while[i < people]
. Y: z5 O8 f* r3 a( Q, z. K[* }# L( P0 X# Q1 k2 K1 J
let j 0
4 l9 ~0 k' W' _$ N7 I. L- ]" dlet note 0$ ?( l! Z4 W/ D# l8 V9 `
let k 0! P* G( W  }( d# d4 @$ Z
;;
计作出过评价的邻居节点的数目
+ w5 j  `5 q. a8 dwhile[j < people]
- J+ ?3 m3 @' ]# ^[
4 a. R" Z: B+ \# Aif (item j( [credibility] of turtle (i + 1)) != -1)2 `: F. u! W1 c
;;
判断是否给本turtle的评价质量做出过评价的节点
$ T0 t) B9 g  g5 d  u8 R+ q[set note (note + item j ([credibility]of turtle (i + 1)))9 D7 H! g* I+ r! S, J
;;*(exp (-(people - 2)))/(people - 2))]

( q* {( h# y4 aset k (k + 1)
# c6 e/ {& t6 }- `$ L& Q]7 y4 }7 c5 o6 x+ q6 ]- z: o
set j (j + 1)3 @, W, B9 j. R+ N& o2 @" o  C1 v- K
]3 N& u* \( ?/ w( h" O8 `, _
set note (note *(exp (- (1 / k)))/ k)( Q$ U, T& {2 H' L
set credibility-list (replace-item i credibility-list note)
1 C( M& E8 s% |( T8 gset i (i + 1)
/ \# a" o4 z$ D8 }( Z]
! a  d4 F! B! |# U+ {end
) I( L3 z( C; e& b: M' h
% }$ b, _/ ?/ L2 A5 e6 j# P+ A5 Xto update-global-reputation-list
3 W. D) u' a, U. c8 p, U  klet j 0
/ @' f' v0 K; u& Z5 d8 Nwhile[j < people]1 D; h7 Q: n% y
[; W4 f8 ~& Y, w' u7 w
let new 0
) b8 n6 T6 z8 I! p7 H. u3 v;;
暂存新的一个全局声誉
4 U" K& e! [" q# u' Ilet i 0
' a/ V: }2 ^& t; M7 ]let sum-money 09 d3 b, K9 k; ~4 e5 Q7 M2 \  M
let credibility-money 0
' Y) }" l# A- B- r7 F# Fwhile [i < people]
0 l0 b3 L; o4 C[
# _6 x: @% Q- m; p; Pset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))/ y, c4 G; w1 O. P" g/ k8 F
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
+ A1 }0 L! u0 f' F# E& x0 Mset i (i + 1)( w5 _3 s4 n& O+ o/ C
]% g' D0 H- A; b7 V. m( Z
let k 0& W+ Y3 k, Z; p" v. _; _
let new1 0
$ g8 |& r  M+ |while [k < people]
! J8 o" @" ?' e) t7 R2 {2 W4 h[2 d: E8 k! i7 N; }
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
( g" |* O- b( R3 F* I, }! \set k (k + 1)
* V+ O4 V+ J1 M2 k" g' X8 t( U$ @]
2 ~& c, e# b8 S* `9 ^set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
) p# Y1 Q6 B6 b+ fset global-reputation-list (replace-item j global-reputation-list new)
9 X. Z2 a' F5 Y4 d3 L1 ^# xset j (j + 1)7 q0 Q$ |2 ]8 u* y, ?6 S
]
+ ^6 K) l5 |  X7 W- W1 [9 s% Dend, i! ?  ]& }. j
( g5 F* x, e3 ^' K
) ]) q/ Y/ m( E8 H9 q

$ }$ ^! [8 r' f+ a9 tto get-color
9 R8 E1 Y2 t5 Y5 C5 a# `. ]9 ?) s4 P; M' ^- B) L7 d; x# O* r( v" z! n
set color blue

( }& O( ^0 ]; M6 ]5 T/ \8 [end' |/ m& o; [0 ^( v9 p! G
, X+ j' F0 r7 v: c+ ^7 `! g
to poll-class
' j& e0 a  I: B2 yend0 U0 d1 J) u  f; U

8 M% A+ ^9 d+ n8 P8 n3 P+ ?to setup-plot1
; T  P; q# y8 ^5 c6 x' ^* J& W: z, P' ^1 U
set-current-plot "Trends-of-Local-reputation"
' u6 n: D7 F8 x' Y& P1 I4 }

" i+ M$ \( O  k3 H2 o5 i' Uset-plot-x-range 0 xmax
% ]: D& J: m6 R

3 H. g( V* E- }+ r4 S; h  [7 x) S& tset-plot-y-range 0.0 ymax
0 `3 t0 m; r# b/ S) n
end5 \6 {: F/ `. G) F( i. w

: D( V$ M" _% c* C, G  ito setup-plot24 [& w* B, C2 N$ I1 D3 A

$ J$ |3 P0 Q$ R. e3 Q1 l3 Yset-current-plot "Trends-of-global-reputation"
: ]: ~) d: F% X& N
$ w: ^* _( H! P% K0 A* Y- x- h
set-plot-x-range 0 xmax
  S2 }9 p+ M, e, `. k
! ^# |2 Q$ d( W: z$ Q
set-plot-y-range 0.0 ymax

5 L( @! j: Q- M5 X, Gend
6 h$ Z2 ^1 s+ h+ {$ {
+ Z* |, Y( E0 O1 R) B& H+ @2 _to setup-plot3, R# K- m5 y. v
! U, @8 E+ o9 q
set-current-plot "Trends-of-credibility"
' E' h/ j- ]- I4 o- t  Z% s
, L+ v, z! K: v6 H- b0 k# w  L
set-plot-x-range 0 xmax
) I  I- R6 j! H" `, X

7 x8 M+ C; {' h# y( Fset-plot-y-range 0.0 ymax

6 W9 t  ~9 N7 j/ @8 e' V% E' cend
! }5 J# O( |: D0 O  j. R! T' M" u* M) _
to do-plots
) e! K6 D0 B6 m) W6 M* x; mset-current-plot "Trends-of-Local-reputation"
; z* c" j3 j5 F0 u% }/ b) x! V$ P% Pset-current-plot-pen "Honest service"
! w% t0 K4 d( q/ u3 W5 Q$ B9 [end
2 ~- ^0 S3 ?9 D
  g/ e/ S3 F4 h  }6 A[ 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." H6 j5 s; N1 J+ d1 b

; E( h4 N  c5 v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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