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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:& b4 ?% M8 N! H' w% n
to do-business
) U- P5 r% B. E/ @1 p rt random 360
7 \2 _* M" _; P" g# k fd 1
( B+ L# |# [% `7 @4 D3 |% x3 J+ ~ ifelse(other turtles-here != nobody)[
; l* c0 A9 x4 |   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.
, S8 G, ]' q, g   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
; ?& z3 F* c) @/ ?! o% ?( j" w   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
7 ^) F4 n  u9 a3 n' l6 \6 L0 R( F5 O   set [trade-record-one-len] of self length [trade-record-one] of self
/ P; C3 f+ O' e; r$ |5 V   set trade-record-current( list (timer) (random money-upper-limit))8 ]; W' ]6 a9 [5 ~; X" m+ [

' f5 O  I3 ^% _1 [+ c- g, @9 N6 h问题的提示如下:
! J& A4 f- p' D) I2 t, {, A
8 L. Z0 T1 l; t2 F( {1 c9 c- t6 ?) Eerror while turtle 50 running OF in procedure DO-BUSINESS
6 X- W, ?9 ]" T  called by procedure GO
$ R( @( O, d+ a* ?: t2 V5 UOF expected input to be a turtle agentset or turtle but got NOBODY instead.
# U- O4 e/ e8 E9 v1 e
(halted running of go)# _# `) J: r7 n+ L

+ ?! v* w: y* D- l. o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~~
! ?* }7 M1 Z0 @  I; ]& X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
5 y$ Y$ b0 ?; Y6 I$ c$ Qglobals[! e/ }5 d7 ~* L1 t1 A
xmax7 f8 ]3 A. G3 {$ S
ymax
7 w% T# A$ m5 j  pglobal-reputation-list7 q/ s( o2 q1 F$ O

; S5 @" m, }5 C% U' O! F; }; M5 f) @) P;;
每一个turtle的全局声誉都存在此LIST
6 e# v, D) I8 _& z) h6 Qcredibility-list% ]3 H: I: p8 V
;;
每一个turtle的评价可信度" k& I4 m& S9 b# V7 C5 V& O
honest-service
! g8 Z+ ]- E: Z% X: Junhonest-service
0 K* {: Y8 N" P7 [$ I3 Coscillation
1 X8 ~" v4 m- o" u' crand-dynamic, p3 `; q  H: ]# [; c, x
]: E( y5 {  T; j2 A( \5 r
. q) Z& K$ C9 W6 z) u. e0 M
turtles-own[
, O. {% Z6 q# l* |( j1 a' S# {trade-record-all
9 L: {4 s' L" t2 j6 f;;a list of lists,
trade-record-one组成% h" E" M- e8 r3 ^( i7 u
trade-record-one3 [+ F& ^% h) V# W/ @; D
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录2 M8 |4 e3 Q7 v) x2 j
# D  N0 y3 P$ g0 \
;;[
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]]# q! d: P0 _( c
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]
' w! b9 d# {' k* S) H, s1 W# fcredibility-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
( z9 X* B0 P: O% p9 ~% ^$ r  sneighbor-total3 k4 u2 l+ ~4 ?0 B! y+ X) @
;;
记录该turtle的邻居节点的数目
& p% v, R- h9 o( Q8 ]trade-time& i) a" {; ?, N% W( l
;;
当前发生交易的turtle的交易时间: a& S( D$ n+ Y) e
appraise-give
3 h$ q1 W4 R/ B' G% {& ^2 S;;
当前发生交易时给出的评价0 L3 V- h- L0 H) Z1 i# n5 {
appraise-receive
# A/ k& W) F# [1 N, Y;;
当前发生交易时收到的评价
' u; L( B0 [0 y3 P+ H/ L9 wappraise-time8 b: Z; p" c% }
;;
当前发生交易时的评价时间/ F% L0 ~# `7 P1 D  `: j/ ]9 u( [
local-reputation-now;;此次交易后相对于对方turtle的局部声誉4 Y% ]; L9 R6 v
trade-times-total7 `/ M1 R8 F0 \$ B( W& ^8 S9 l4 M
;;
与当前turtle的交易总次数
  J% f0 J$ n( A- @5 L, J$ atrade-money-total( O3 p# Q! @4 [* P& H2 m, K
;;
与当前turtle的交易总金额- a( p, j& z. W# z
local-reputation
3 {  }; N! B+ A# z1 u" b% {; s) v/ }global-reputation! B0 S+ s9 e, L$ m7 s  ]) e+ |
credibility* s9 k7 D8 [% W' U* p$ T1 \) K
;;
评价可信度,每次交易后都需要更新* k1 `$ q8 I% D3 s. j
credibility-all2 M* z1 S% T) e0 |# K
;;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
7 m; W: m' U# J; F+ K
$ Q) z& Q# v8 T, d" k8 C! ^9 N* q. k;;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0.50 m' a  m3 ]. d5 l- P
credibility-one
# l7 v3 B' S5 v( u8 G;;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people0 W" L6 X2 f# K8 O; j' k
global-proportion
8 {, x9 K& D3 g6 Icustomer
5 T( v9 l' P  j' _. icustomer-no. x# T* q% A+ d7 i
trust-ok; V: m" @( i2 v, ~4 Y
trade-record-one-len;;trade-record-one的长度) h3 ~+ I6 w& [
]
# p8 z: k9 y1 b& I
# I2 B5 ?3 ^) r# a. H$ ^  |;;setup procedure
; d8 |, k. G3 s: k
0 F4 T' P1 Y9 `- ^to setup
) B9 J2 |5 q+ P
  f  `0 L+ t4 J/ f9 `' x3 `ca
7 l6 e5 L/ h& S) C( }3 n/ p
3 T. g& o' r  H& o6 O* q
initialize-settings

( k. P0 M- P5 t9 g6 O' G% ^, O
4 R8 J! O$ W; B+ w4 d# scrt people [setup-turtles]
8 H& A8 ~1 P0 S. E6 W! n% F4 u

0 S3 J% y* Z: r, q- freset-timer

, h, I. ?1 P* ]0 [( `7 f
: A3 x7 \! r/ E: S& V9 F) u0 B0 Zpoll-class

" Q, @- U: _) a
% s, e' e! W" t! d% Ksetup-plots
5 b) e3 @4 |  y- R( }$ M) Q- P
7 m! F( ~) A/ P" ^6 V* i. R9 P
do-plots

8 K* a% K( Q/ Uend" }9 k  @3 Y; w0 v2 f3 c+ @
8 [2 S# w8 w$ V" O  [8 q
to initialize-settings3 C: O4 _5 A8 v' {  W
; w7 n6 u8 c( s
set global-reputation-list []

& o- K$ ^0 t: O3 B, t
  t& M8 ~2 v8 `* W2 G: b" iset credibility-list n-values people [0.5]
( }( K/ N# m- ?$ X/ U" k3 h* W

( }& N# Q: a, ~1 u9 J8 q" w* Bset honest-service 0
0 n8 `' e  l1 V/ b! V
+ Z; B  X  A% O3 A3 y# j7 p2 J/ N
set unhonest-service 0
! [- x2 N! K1 Q* `

, }1 c4 ]5 b3 P  R0 Sset oscillation 0
: S; ]1 y+ Y  s- B  B* n

! ?: `6 w. ?5 L. U0 hset rand-dynamic 0

: r0 M. X/ |) Q. f7 Nend
  o* H  j/ }3 ~4 e9 p) \: @8 r5 X! r2 a$ d) L
to setup-turtles
) p) u9 J- a# M' z1 j- e' dset shape "person"# V( x1 d, M/ p, l
setxy random-xcor random-ycor
+ F& b# L  W: r7 A% i# \set trade-record-one []& K2 j, R3 w) n0 q2 [

# P# n9 q; u5 j( s+ eset trade-record-all n-values people [(list (? + 1) 0 0)] 9 |: J* _$ l+ S1 h) J
6 R/ P$ V- W/ C, t; \/ {
set trade-record-current []
: J3 m! F+ K4 mset credibility-receive []2 m5 X4 ?+ u2 N
set local-reputation 0.5
; c: m: W2 v" h7 J9 V9 Jset neighbor-total 0' \& |( F% v  k7 o' u& i
set trade-times-total 0, A0 U7 {$ S2 t  |: v; x
set trade-money-total 0
5 H0 B4 ?# h/ r- U+ }6 w3 t0 w2 lset customer nobody
+ [" Q$ [6 v7 i1 h. j; `set credibility-all n-values people [creat-credibility]
: u: G6 [& a4 m- o( ?9 o' Rset credibility n-values people [-1]
4 g! W( ^4 [5 }: S* ], H$ ^' Gget-color! b" t3 u: Q1 v' D0 G& z: w
: A9 }4 F, A# c" v/ J5 e
end
! j# A8 p. O5 T2 [1 }
' g3 L" T: ^& J  X, ito-report creat-credibility# }6 }/ P" o* u" D* W- N6 w& H! \, V
report n-values people [0.5]
+ T) f7 U  y' F/ I9 i; U# zend* c' J$ c9 ]; P4 t4 X1 a& H  M' P( Q3 R4 h

# q! u' n* q9 t( eto setup-plots
! p2 |. {" a- [. k
6 I* H' k! U4 {7 h4 Dset xmax 30
" m# m2 d7 F1 b& J3 L+ K( N
. @- N) C" U4 _- B9 X' w0 S) V
set ymax 1.0
, Q' ~( t0 Z: w7 O
; T+ V: ?2 s+ \. G
clear-all-plots
/ q) H! j9 z* v( n

3 H2 K( n' F  o' L  |0 M" G" f( Jsetup-plot1

9 e' {# I9 c0 ]! d. J! A' F: J
1 O0 T, F- h1 g2 s" X# h+ \setup-plot2
5 z0 x6 X! k+ D, l( L

6 N0 r0 w; ^6 fsetup-plot3
, A1 t+ |1 |6 _' D! Y
end. V( f! k: J8 o
+ f9 O4 a% t; O% R
;;run time procedures
; X* F3 ?0 U2 z3 S9 C0 c4 f/ F6 L/ H* |6 [8 d7 s
to go
9 y! l* c0 ^0 G6 ^
$ F/ x1 J! P9 F/ [* lask turtles [do-business]

' h) [6 g& c; D+ Fend1 K- Y. {0 C" ]/ R

& B7 c9 p* x3 {) x3 p# g* Sto do-business - r3 O' Q1 k  g5 C
6 `1 `2 p1 J3 T6 d' y

3 C" m: d$ O' a& j0 Xrt random 360

. J6 V, a/ [  _4 X- Q9 R" e8 ?8 T3 H9 {
fd 1
- S  I4 f6 |0 _& E) m
! X4 |- J9 P$ o$ G; Z, ^& x
ifelse(other turtles-here != nobody)[

9 z* ~; G+ V$ g. N7 U( W0 V, |' e1 M. E
set customer one-of other turtles-here
0 }1 E/ V/ f7 N0 h

3 K+ Y6 Q4 F, Y;; set [customer] of customer myself

, g0 \7 ]! K! f
* b+ n; b; h  ~5 i" V$ _set [trade-record-one] of self item (([who] of customer) - 1)7 p" k* u/ R1 p3 a' f  K0 B
[trade-record-all]of self
. M9 ^' g$ e* R+ M" {) x; q;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

/ P- |& ]* j" d" G% `: |4 f6 `$ [% I$ [! }3 I% x- u
set [trade-record-one] of customer item (([who] of self) - 1)) J2 c" |2 {8 f0 j/ H/ C
[trade-record-all]of customer
  I+ S' W. [7 D# C

0 E3 c( u4 y4 t9 O2 X8 I8 P8 }% F( Aset [trade-record-one-len] of self length [trade-record-one] of self
! P- s# c- X9 r8 x

9 g* [5 f' \# U! ^: G" C  [* |. eset trade-record-current( list (timer) (random money-upper-limit))

* c# c2 O" J: l2 [8 o; j3 K# p3 s& t5 n, W
ask self [do-trust]
. x) F; i. e. u;;
先求ij的信任度
" n, Z$ k' D1 t3 h2 R$ \, A$ G  v& O. u- m7 G+ |: M* j
if ([trust-ok] of self)
+ M. `4 n  e$ F$ M( ^;;
根据ij的信任度来决定是否与j进行交易[
0 T, t# J8 ^  x! `! f+ X# a: Task customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself' g+ }# ~0 e% m$ r$ ], G
1 V+ e  e" G+ o# R6 ]
[
1 g2 |5 g# S& v! k3 @1 V
7 A( k: N5 N, ^- i& g+ K) m7 A
do-trade

% }- L+ J! S1 m, d: a' B
/ n& |) Z  a  l  mupdate-credibility-ijl

3 R  ?6 s( m8 o- _) L5 {# i& t0 Z/ {( v) \4 ~
update-credibility-list: N( ^/ d/ \3 a( R6 ^
7 f, Y/ l7 ~7 u* v- |+ Y

  F3 S' o* b5 d! Aupdate-global-reputation-list
0 j3 F- D) O( z- P

: ?5 |0 ~2 _1 Z. Qpoll-class
0 D8 W) J, R& J% W

% Y$ L+ K# F7 M2 v& b6 d5 Y+ D6 G' T7 Bget-color

  ^2 E9 |, ~5 Z7 H6 Q9 u4 w
! L% w2 P1 D  X" Q! f]]
4 k0 y8 q  n) D
' C) o0 J; Y. h; Y- T1 s2 T5 q;;
如果所得的信任度满足条件,则进行交易
5 x+ [! A' p2 M# L6 d$ N( E$ t+ [) m( _
[
0 a- }) P0 \4 O: i9 E
- K, a' k* t1 U! `
rt random 360
+ e$ N/ c  H, `1 R% X" t* E
0 a* l; ^2 B+ m4 d: D- F" c
fd 1

+ l' r3 R9 c- \' f* E
! [3 ]: f6 `/ T+ k]
4 T6 ^/ J7 n# S* K% d

) X' @# ]4 B8 E. W4 |, _0 Bend

7 H: {) N; g- \8 v: J5 U  x. Y' [
to do-trust 2 \! |& T0 d. Z& G9 G' S
set trust-ok False
- ^% H/ N7 Y" j% Z* k9 l' ]6 o& B# ]; f! E7 P

% C0 ]5 m# n5 `let max-trade-times 0
+ q) [" A# ^) C0 ^foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]1 E  ?7 o" {: ]: Z" v
let max-trade-money 0
( \% S! i; R1 k2 x6 L, O: X' gforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]' \2 C4 @/ w* ?8 n' C2 Z9 ?
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))0 r: F6 ]: b* r! J' I+ {
, c# C7 }1 V- Y. l3 i: J
5 |; t0 n* L" {* _: n
get-global-proportion: M. F# c. R- O$ _6 C- ?
let trust-value
' A) |- q, }; [5 _7 h1 s, blocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

5 f; N- U$ n0 N" Y+ Eif(trust-value > trade-trust-value)
4 `# F) h1 E" x! a5 A[set trust-ok true]
+ z* w+ m. h9 t) ~end8 u$ O5 D, E1 w4 N! I6 Q
0 e# k5 K' c1 |1 U
to get-global-proportion& |& C4 Z$ i" V' J% ~/ ?' L
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)6 O3 _( L: |6 a. f* Y7 @
[set global-proportion 0]' C4 S7 o# n5 y2 n8 f6 w- L1 k8 x3 f
[let i 0+ F( Q1 k& i) j) A- w# p+ y
let sum-money 0
5 y' p! d) T; s" V6 p+ Y3 a7 owhile[ i < people]
/ H8 j* B4 Q/ C+ R[( g7 |: S5 l( q3 r. g+ f! t7 P
if( length (item i' @( R, X& R/ A* D
[trade-record-all] of customer) > 3 )

2 d7 T5 a8 {8 n3 V) l& v[/ S8 ^% n8 ~( @# i
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
) j, ]* w$ Y8 `& [3 b7 W' \4 O! S]) g3 j( T1 R% C7 }; L
]
2 w. h7 z  K# a' Z6 n# @let j 09 b9 p5 L% L% j. T: ?1 [% I
let note 0# c. m' r2 v( |/ R! Q3 L
while[ j < people]
+ b0 \& k0 C$ p" g3 n[3 G" e" T$ M% a/ `/ b) Z
if( length (item i( g0 a8 i, m7 h' h7 p' l* l
[trade-record-all] of customer) > 3 )

- }; h6 d7 t" n' c/ ~/ {[4 f$ ~; F) C; h2 _# {; a
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1), ]% Q$ F+ J6 ?% s) r% Q9 i5 c
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
3 R, O# L, J- ][set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]  B) R% f6 @4 F2 G
]" B8 t5 G) L1 ?# c. u
]
2 I4 ^, Q6 J9 yset global-proportion note
; p' f) @: c4 U6 M1 y]
  q0 |7 d4 ^: R6 Yend6 R5 z" R+ |8 H, O- P! T$ g7 y
+ ^0 @3 G  Q) e( N; J/ O, Y
to do-trade
; T  ]3 T. F; ^3 N* G;;
这个过程实际上是给双方作出评价的过程/ M( p. P% n! P3 Z4 I$ M( b
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价! i  U, u" W5 {& r/ ]
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
: Q8 H+ I3 R2 V" s; dset trade-record-current lput(timer) trade-record-current
0 X7 ?) _% ]" J; {;;
评价时间* _% L* [. U. e4 E& @3 O% x2 g
ask myself [" Q3 f. w! W: o- P0 S  d0 u' ~6 H
update-local-reputation
2 x! {6 H1 J+ r6 W( `4 I8 Lset trade-record-current lput([local-reputation] of myself) trade-record-current1 k9 s: g' d: B+ e9 q/ \% a
]& N+ y  C, T; V: V, O1 F# e& [
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
/ r: B+ \- h0 A$ P/ r) ]- h( l;;
将此次交易的记录加入到trade-record-one* ], R3 t1 e9 T$ T' o# g8 `
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
4 O, ^! T. t$ M8 u& n3 Y' ]( o+ Clet note (item 2 trade-record-current )
' p' Y7 ]7 L0 k# f9 W2 |3 p& I3 j. Y9 Eset trade-record-current
2 n8 k# X* f' n(replace-item 2 trade-record-current (item 3 trade-record-current))

/ s6 F3 T  [- {: j1 ~- q! E. zset trade-record-current+ a7 h6 Y  p& b% g) V5 ], K
(replace-item 3 trade-record-current note)
1 F5 ?" ^( f+ o/ R8 K
; f- [$ k( l" f; h
' h# W0 o  k; p7 s* p
ask customer [
: I* q1 y; D' I& Xupdate-local-reputation, [* t; h& `4 E( K5 o8 g
set trade-record-current$ o+ G: s' W# J
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
' ?9 R2 d+ Y* J
]
: S/ c1 j( m: L
/ M, ]' a4 Q$ [

! X2 t$ t* o6 l' K/ S$ A! Nset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, W6 j2 I. _' `3 E/ ]% g, X; G; @
" n1 F4 b- R2 x1 _$ u  d
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
8 @  j) n4 A3 X! }% Z# K) R5 P;;
将此次交易的记录加入到customertrade-record-all
8 o) B" C% K: ~6 eend4 C0 x1 w6 c% X6 i2 w$ \" ?( r0 l
. Y# H7 b, _8 f. q+ b9 g( Q5 D
to update-local-reputation
% v* K: B/ N  s( ^set [trade-record-one-len] of myself length [trade-record-one] of myself
) j" W3 J5 I2 {8 ?
+ ~6 h& K" K, ?* f: r7 e4 _, `6 u: p  Y( }# ?8 q& @. \
;;if [trade-record-one-len] of myself > 3
- F7 e( u+ M& H
update-neighbor-total
* R* Y# f0 l3 Q1 [  [# n+ S;;
更新邻居节点的数目,在此进行
, V" L+ l; `# l1 C+ g3 \let i 31 H& @$ @- Q; g& n3 v
let sum-time 0
+ k3 J$ ~, I; s/ a* Lwhile[i < [trade-record-one-len] of myself]2 M9 j3 g& M& ]7 F6 D& U
[
7 x* Y- S: |9 d9 k! s7 Hset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )9 z' ?+ r8 a  p" g
set i" k& z. d  m4 @% [6 u2 Y
( i + 1)
4 Q: ?+ v& T6 N. \7 l
]0 \) k, f# \+ b* u% y
let j 3
1 M3 y- v) j* ?, L+ _let sum-money 09 Z$ P! R# Y% j
while[j < [trade-record-one-len] of myself]0 K" C* t, P( k# K: ~  H; t
[( f( M# V: k) V
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)
; a3 f$ l5 s4 yset j% V  S' [& T" m: w) Q
( j + 1)

3 @4 P/ ?+ t* O2 [- M" U, s9 y1 v" P1 L]4 s+ N. X% x9 Q; D/ t. b
let k 3
  h) C$ ?) @/ E! flet power 0* m, K2 `, Q' w5 f
let local 0
6 r$ O; b. x% E$ a; Ewhile [k <[trade-record-one-len] of myself]
4 d0 F) G3 W, v/ ?# p+ O5 Y[5 s6 F" L* l0 }
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) # W. c: q7 H% W
set k (k + 1)' }% B- _' {( ^# W
]
, e" b9 @: i5 Bset [local-reputation] of myself (local)# ^7 I' H7 i- k! S  v- L. O- v
end9 o: T$ i+ ]9 w* n6 U8 g+ d

/ v! c; B9 F( o3 J- I$ mto update-neighbor-total. T- }* [  r0 `, x

+ @/ o+ E/ s) G3 S) p9 N4 r& Lif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ], [2 T+ i& @8 r6 X/ l
3 n6 Y. O  u- N. t+ {# x
  b. u7 Q- _5 s2 M6 f% j
end
7 C! K/ F" N5 F9 h8 p8 i: P+ I. p0 P1 e: d" P
to update-credibility-ijl
1 z6 f2 u: p, S/ p& N5 @- [1 q3 S% H. f% o( G+ 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。
4 {  H2 u. m  J" D) l9 k2 Plet l 0- x. v4 V1 p, U9 D
while[ l < people ]. O" j4 p' V* E1 U% L0 A# m
;;
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
% ^4 k  G6 m+ M2 b$ o1 h[
+ z$ W% w+ u+ j! [let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
8 u, R1 `$ K$ ~  {if (trade-record-one-j-l-len > 3)
' |' X( @% ]! V$ W  }# p% ~[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-one8 ?; x' C6 h( y1 x6 m: n3 ^
let i 3% Q% p* \  k; A& o- P
let sum-time 0
, B- T; R2 {2 j" E2 p3 ywhile[i < trade-record-one-len]
& e% P9 x. R& P) L[& P8 h) S+ Z5 e7 `1 z
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )/ Y0 R; O, b. K1 k8 g
set i
: m, B5 Y9 z* H* P4 h( i + 1)
: I. ^1 J3 \; i) A
]
, y& P2 r- H- V! m/ ?1 Slet credibility-i-j-l 0
4 N) J, y" u6 Q6 |  Q;;i
评价(jjl的评价)0 _9 y" e! N2 ?  q7 N1 Q& q
let j 3  Z( a9 r, Y; |5 P7 c7 a8 @* _
let k 49 y  Y7 K% p) j- y. Y/ ~
while[j < trade-record-one-len]5 |- v' E5 G1 m0 [7 o6 F
[: Z) p) J+ l( L6 P+ ]6 M/ ^
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
6 _/ U7 J) h2 Sset 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); H7 E7 c0 @0 S1 m7 c5 z
set j
$ I5 @9 h4 y$ [+ \% f8 Q( j + 1)
# r. l% r, u  n
]
5 `  |, b/ f; N* o* pset [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 ))5 ^0 D$ r7 k) H  |  s
8 A2 ^4 M. f7 R( {( ]. e

8 d3 F; a! Z( I7 h5 h7 C. @let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
5 j4 j- A8 ~# _- ^* N& ^;;
及时更新il的评价质量的评价
. U- o4 S( `2 P, R2 d! u- hset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
. P( m: |1 w$ H. _& G6 tset l (l + 1)
. a$ T6 ^2 t/ l]
7 |: y, `/ j1 S! X) U3 E) Qend, X% A7 g5 e$ f: v8 p
  Y4 M+ e5 W3 [& a
to update-credibility-list
8 b. }) N0 o9 q4 [  ylet i 02 z" m3 l7 L4 w* ?
while[i < people]: n; L3 f& W( P$ r
[9 G/ h: P+ n" m* y8 q; d
let j 0& W! a* ~$ n  }3 V
let note 01 Z1 a: X. U6 P5 }8 d7 }
let k 00 s5 i% J( j3 M% a: y
;;
计作出过评价的邻居节点的数目
; t  Q6 i3 D) G3 O2 [while[j < people]1 B' p3 H: `( ?& s* |. q
[
) O& M  P! ^% l) d3 l$ C9 Oif (item j( [credibility] of turtle (i + 1)) != -1); D! X& O9 C3 p( T
;;
判断是否给本turtle的评价质量做出过评价的节点' `) k! [) N" ?/ L! z. T' G3 Y/ N& k2 v
[set note (note + item j ([credibility]of turtle (i + 1)))
0 I! Z' J% W; e$ Y0 K" a! b;;*(exp (-(people - 2)))/(people - 2))]

' v; y' Y2 R5 l: k; N3 C- Kset k (k + 1)
* K# a/ l" M' [, P7 J( H3 w]4 P' B/ {: v+ ]* f8 Y' O
set j (j + 1)
. z) w- R- X5 O]* ~( S1 n% O* K4 i, @
set note (note *(exp (- (1 / k)))/ k)
: i9 E+ H3 G. R3 J- Q' E6 ~set credibility-list (replace-item i credibility-list note)5 Q0 `( X" X0 v4 P4 ~4 X. {% a
set i (i + 1)
8 Q, G" x/ F$ g! t% A/ e  j]2 p6 E2 Q+ k: W: V* N
end" k: q" e' Q# E) u1 _

7 Y/ @* K$ Z, yto update-global-reputation-list
, q' ~* R5 a! Ylet j 0/ D. ?" U. L; R, u0 s
while[j < people], U' w4 E# x" d  E: L
[5 t/ j" N) u- z" E1 k- k0 c
let new 0* w0 g1 s3 z6 R% E# A0 G1 ], {
;;
暂存新的一个全局声誉
3 V7 D' [; {& g, _% y- G! x/ ^let i 0
: m, t* m; s. T) Tlet sum-money 0
% ~# k# \5 e' a. J7 M/ plet credibility-money 08 D  j9 _0 g" g; E( C4 k) k6 p# j
while [i < people]- `) M3 _$ c* j: L% _8 [
[
9 O) o/ N' O4 u7 N+ T/ Yset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))$ h+ W% l& C( z5 i
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
  ]) b$ x- ~3 ~# w2 Iset i (i + 1)
7 c0 A- P9 t+ |& F: x- K]
' j& z; }" z  K% Q% X- Q( alet k 07 K1 q/ E% D) J7 {) P; i+ f
let new1 0+ d8 e6 v3 U* `: O0 v: ^
while [k < people]
9 W2 `; P7 f8 V$ @$ B1 O[
% B1 G7 T% I- ]: z* [6 S  T' Nset 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). n8 d# U& `% L
set k (k + 1)
1 _* G) A4 `" z# D: W]7 ~( m1 S& n5 R9 ?* N" |1 G
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
6 p- i9 s! V4 D8 bset global-reputation-list (replace-item j global-reputation-list new)
7 ]2 G+ x% [$ d# Z2 ^1 fset j (j + 1)2 U  t5 Z* P/ _
]1 m; S; \( V) z% A8 Q1 i
end; ^$ ]7 B- M: F6 f; D
1 C- E4 e: F& M  ~

0 n# @2 k1 ~7 ~- c+ [; \, v2 _' d, G* f2 g: B
to get-color6 L6 \! F# t. S

: C1 o6 j* Q5 q/ I# F2 Z3 sset color blue

0 F  _* B- c4 n. Cend
; u) i" @- ]  U2 y7 a( z  x" ~8 [6 @
to poll-class
2 L8 c- `% h1 k7 i& g, uend
" z7 a0 k+ T8 \5 B4 d5 c6 I; t! M7 h/ m* H4 o& H' h6 {0 r
to setup-plot1
  ^6 D# v7 E  t8 L, V3 x4 q1 k* l/ o0 `" H' N8 V3 _/ b, s
set-current-plot "Trends-of-Local-reputation"
8 P1 n4 E; I! Y1 r

2 [% D! T' H' Iset-plot-x-range 0 xmax
: t8 O: p$ J/ K
6 a' v& |, i! J& C1 h7 f0 @
set-plot-y-range 0.0 ymax
5 M4 H) T: a+ I
end- A9 K4 C, e; L0 H. C6 |
, K  p, e2 s! _$ n( w6 R( [6 Y/ E) G& M
to setup-plot2
8 y4 \" K/ B: ]
$ F6 {% Z; E/ p2 K6 w4 [; L0 mset-current-plot "Trends-of-global-reputation"

% h7 ?# P& j* g, w0 _) y1 x/ f% a, }+ I0 }
set-plot-x-range 0 xmax
8 B3 s4 [( i* t& r2 K4 R7 W

: B" \3 w* ~/ D) L# Z# yset-plot-y-range 0.0 ymax

' ]( L, x2 V! r/ D: N0 rend
$ Z4 \6 d" y: T% ]4 O! G  s0 s
( d- u* o1 z9 H) T( P9 K- Y1 t- Y" Ato setup-plot3* w( V& M3 o6 ?9 f& N) \! c
$ q0 g% \8 z  r; E" |
set-current-plot "Trends-of-credibility"
' V& W2 |3 y- G+ [6 M
+ y0 l; Z; F5 C3 V" h2 Q( E- v
set-plot-x-range 0 xmax

: G7 \8 E6 a1 ~. s6 ~& v( O# o; q7 _( n" S
set-plot-y-range 0.0 ymax
) \# E) s! x4 Z! H
end1 a  ~7 d" y9 s6 ~  D
6 b4 T9 ^3 b% e" I! G2 F  W
to do-plots2 Z: d! ]) v, j, h
set-current-plot "Trends-of-Local-reputation"! P1 z0 u  K0 M
set-current-plot-pen "Honest service"
+ H7 a' D% h3 kend3 `# ?! k0 I$ L  V, Y" m

/ }! I- w! w; f6 y0 E$ \0 Y[ 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.+ e' q3 @5 N! U( d

% u) W& j5 v4 L3 i6 M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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