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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:
: j6 Y1 K, M  w# {+ }/ ito do-business
4 w1 h9 i3 ]" r5 D+ ]1 ^4 [3 v rt random 360+ k/ L6 R- ]; ]  D# l
fd 1
/ h; |' M  h  H6 }* f. g0 r: m2 W ifelse(other turtles-here != nobody)[
5 P6 u6 n/ n8 z1 \   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.# X2 {7 r: D0 d; m2 h" B
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    2 Q- d' F( j* @& A& L% w1 k
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer8 `2 `6 R/ [9 J; e
   set [trade-record-one-len] of self length [trade-record-one] of self; ~1 F. L# J( p+ w* Z
   set trade-record-current( list (timer) (random money-upper-limit))3 O% Q% L& k/ M% h6 _
3 q3 q9 J+ V& `! G# U6 x0 w4 F
问题的提示如下:
  Q7 l6 A* T# S9 d6 t' Q% M! y8 k0 o3 U. o( B1 L' o$ r: B/ S
error while turtle 50 running OF in procedure DO-BUSINESS
8 ^) S5 B+ r3 T6 c" B  A. v- @  called by procedure GO
9 X5 z3 B0 |' K  v2 [8 q! nOF expected input to be a turtle agentset or turtle but got NOBODY instead.1 q; k. i! B# W
(halted running of go)1 t, x- o* D6 D* j# o

# E$ T3 o3 Z* H* p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 ^1 ?: W! j9 a3 T+ T
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
" A9 [9 y7 I2 lglobals[
$ s0 |/ W' ]1 ^" w) j4 Wxmax1 V" A4 E  V" d$ }2 S
ymax8 c' u. C( r# ~
global-reputation-list
8 R% N' ^; d% @8 Q3 {0 ~% q5 K" H' U( h; k5 X
;;
每一个turtle的全局声誉都存在此LIST. B2 {+ L; x( b! d) C$ N+ `# x$ b
credibility-list' g# F: t" H3 ^* ^3 {
;;
每一个turtle的评价可信度* N0 j- v$ {; i, W( l+ o6 C
honest-service
. N9 z" |$ O, p5 Gunhonest-service+ N6 R" z6 d% @) s2 z4 Z
oscillation
# w- L/ `% r8 S- ]! Q+ w, jrand-dynamic
; s* n! u8 {. N' R, K2 b]+ [  o: q/ v# c: ]7 z$ E0 {

/ V+ U8 ^: Q; t+ y5 H. H6 F( q0 A; `  Qturtles-own[
: y! \& T3 C: @( z9 k: _  h: R) Itrade-record-all1 o5 x% P- I2 S7 _
;;a list of lists,
trade-record-one组成
" E5 _& `' Q# M% w: i$ j+ C- B+ h" G9 Itrade-record-one/ _3 x' E2 L5 L; R; ^
;;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 ?) B) h3 L8 @" R& Z
- H: }  U1 u* \1 S; Q) }
;;[
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]]& l0 H- Y! L0 H! V5 K
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]
& y9 _5 V8 D( |1 ycredibility-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; m/ t5 B: m! ~6 t$ Y, b
neighbor-total7 E/ O. \% m  b9 C! J
;;
记录该turtle的邻居节点的数目/ F7 z5 c5 j4 A. u% }, [' \: E5 q
trade-time, f. d) @: n( r2 b
;;
当前发生交易的turtle的交易时间& N1 f0 N/ |5 B3 R$ q
appraise-give
, b" r" r' y* y. s" P5 d;;
当前发生交易时给出的评价3 }( A/ X9 m4 w0 u
appraise-receive
& X# M" B' c2 T9 W: ]5 w;;
当前发生交易时收到的评价
# b. L5 U3 w1 m3 G% zappraise-time( c& N' z0 U; v& V3 B
;;
当前发生交易时的评价时间" D( j# B+ A+ g6 b. ?7 _" A$ r( B* }
local-reputation-now;;此次交易后相对于对方turtle的局部声誉& E+ j( D5 e3 ?6 [8 `
trade-times-total
, P( p; L8 m; e+ i;;
与当前turtle的交易总次数# p4 W) b  ]2 F9 O1 ^
trade-money-total6 ?& E# ^1 D; z5 ^  M7 @
;;
与当前turtle的交易总金额& s; X% _! K& g4 ^8 d# d9 X
local-reputation# Q) e2 M% v( [
global-reputation. V6 K3 H2 T8 [# q. p
credibility. G$ j* u* A7 {( T2 u2 g
;;
评价可信度,每次交易后都需要更新
% I0 n2 c* {, A) Ucredibility-all
4 y$ ^8 c4 ^1 w7 A8 ~1 {;;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; q) Q) \: H3 _  V! u' L$ ]' O
& [' E! l& w% K& d* P, }( q- N7 G
;;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* c5 _+ U' i9 h3 jcredibility-one
8 P+ T; h9 d8 @;;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people5 k& R  K9 T# U- `  A9 O' j
global-proportion: O4 z2 k* K# M( X$ ?
customer( m7 g7 l8 x( @9 z" u& i
customer-no7 D% J- R! Y% J6 E8 {; Y
trust-ok
1 o7 x+ \* k. g3 Y  Etrade-record-one-len;;trade-record-one的长度
, n$ R% T- D- f1 Y% Y/ \( Z]# N! g2 u6 J+ P, e/ q' e7 C9 r
- x# o$ o* ~, X1 J' y
;;setup procedure: T) E5 z4 |$ R* H) H( b* m  K
( L1 q' x+ z7 j) p; j' n
to setup- c$ Z# a* s, ~4 U; B

' j( _8 O9 Z2 I& j* a( Qca
$ y4 Z6 |% W1 R: x# a

0 d( v9 z2 |$ a( _' O+ e" X; linitialize-settings
2 N& i# z: Z/ ]; |; X; P

' ]0 v' H9 e$ h" }( z+ ~6 w" Bcrt people [setup-turtles]
7 S8 N0 E" w/ K' W
/ |( J5 |7 [  T6 G* m' z
reset-timer

5 h2 @, v# q9 G3 o: ^" ~; e6 M
" Q% Z  w; w( c3 m. Y5 Fpoll-class
; e' F/ N7 }- `% H+ X
9 f3 p5 E! z, g  y" ?3 ?5 G+ g! J
setup-plots

& }4 U+ T, _/ _4 x
, D( S+ g0 Q! @" U# h. D4 O6 v/ c" ^, fdo-plots

% t" L( A& U, d# ^- qend
, ~3 Y3 O4 }" \" H' E! L8 q$ ?7 P2 x" J! c+ F
to initialize-settings
; [' S! }: y3 t/ g7 n
5 Q& f  g, ?, a+ cset global-reputation-list []
5 z8 K0 K* u! T

" A7 m' k  [( ^set credibility-list n-values people [0.5]
9 ]) F  E. q' p# p# w3 o

* N+ k# U. a9 M" Y( x0 Qset honest-service 0
, v; K/ R4 V6 I+ ], [' P, ~! k& U+ @5 P
$ Z# T2 S: N) w/ m; P
set unhonest-service 0
, e( y7 y6 G  [! G
6 o# m- N* z+ [3 j* L
set oscillation 0
5 w( T: A/ ~' s- U2 o
7 U, B- u- b8 `0 P; {
set rand-dynamic 0
* [8 b! r0 _4 g7 J& w$ H
end" d6 _9 {% q9 K  S0 l0 ^' q* t1 T

: h! K, n8 Y( ]2 D+ B+ S( gto setup-turtles
% E' {* G' x5 ~5 N6 Eset shape "person"
; a' v  |2 {1 o  N2 {& Isetxy random-xcor random-ycor
# U( G  e: o( {) Eset trade-record-one []. Z/ D7 F5 v2 P$ O
/ s0 Y2 J8 Y* r) W3 ]/ h- y
set trade-record-all n-values people [(list (? + 1) 0 0)]
( b3 h, j* v, a* C  N" L

- B7 b5 x9 o" a, W8 [set trade-record-current []
# E7 v! Y$ T# p% Y5 Bset credibility-receive []
% {. G; N. J) x/ X# D$ y& [' Rset local-reputation 0.56 y8 y2 ]$ p! n# z
set neighbor-total 08 s5 f. m7 l9 b8 c& k& s
set trade-times-total 0+ q8 N. T, A0 o  n2 B3 a9 [" @
set trade-money-total 07 P( H: J9 B* g* l
set customer nobody& |" v& x' \3 w7 A
set credibility-all n-values people [creat-credibility]
; X4 D+ a1 u! f) Qset credibility n-values people [-1]& Y' \5 C) d$ c3 m$ Y; V1 C( }
get-color, `1 e! s6 D* }5 L& S8 T
5 g2 N0 Q5 X% i3 h$ P6 [! r. M
end" I8 H9 C; P" q7 E' x
# @1 o8 C) A' j3 [3 n5 k: A5 R
to-report creat-credibility2 J, X/ W% e. T) y' I3 g. r6 V
report n-values people [0.5]
% F% q' O& k% X/ {' @# Q+ Iend
& g6 {  b/ a# [5 Z- A& b" j
/ `$ W1 B+ F4 H4 ~to setup-plots
/ Q4 c, s, ], S/ ^$ N, j6 h& W) b4 o2 o
set xmax 30
3 u0 J( I1 A- _4 ^$ q% \5 \
- u) W5 ^! d' Y2 E2 m
set ymax 1.0

. P% @* |. E, \# }+ o+ H3 y# n9 |( r, ~! w& \
clear-all-plots
# L: t6 Y. t3 g
: c3 e. ^4 O5 y7 X) c
setup-plot1
2 G8 w9 ]: j$ U- s

4 U3 C9 U; N! a5 ysetup-plot2
* R/ s  Q: [% u/ [# j7 T8 }! t

, ]- E8 S: D+ b% Rsetup-plot3

( L0 `0 s- z' y. J# ~end1 P2 Q2 l/ P$ t$ [) [" L2 r

9 N- ~3 n3 |2 R  i7 ?;;run time procedures, ]! r# k* h6 e2 X

* k: w; Z: B; u+ Vto go0 Q7 U, q, Y& K) s" w% }

4 G4 s& T7 s3 N5 N# e, ^2 Jask turtles [do-business]

+ Q. a) z3 f3 bend) ^! @$ k" S  T% p
7 Z1 \: l+ r$ M
to do-business ' b4 d, ^/ T, V# M- n1 Z
# V( u+ r: ^5 J- }1 Z' [2 d

( x  v% P& C4 U0 f$ m6 w0 \rt random 360

3 q  K$ H# {% Q3 m) ?: D# U  Q  R2 Q2 i
fd 1
7 L4 J: Z3 `+ h: U4 i) l# b

! ^2 D6 A# h! J! ?4 |ifelse(other turtles-here != nobody)[
& `2 X) l. [( |$ N" L1 M4 d" J

! K/ O+ o8 G% C1 D9 ~set customer one-of other turtles-here
2 H6 s. W: n" B, T8 v+ v8 v
5 u, d+ k0 c. Z( O
;; set [customer] of customer myself
( I& ~& Z5 I% c- i/ K" u+ Q
0 Y# }- x# a0 d# q2 n3 x  W' w
set [trade-record-one] of self item (([who] of customer) - 1)3 ]" m) x4 c, B# j" S0 H
[trade-record-all]of self
) E$ Z5 M! B8 {  p& |, _3 M;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

' f) ~: M, [+ V' j$ `  S# v% S# F% F* C+ ^/ M+ c( T
set [trade-record-one] of customer item (([who] of self) - 1)
* S, l4 L7 ]. ][trade-record-all]of customer
, K$ n2 i1 w6 E9 h$ ^% b

" ~( \8 D- q6 k' o  ]5 Yset [trade-record-one-len] of self length [trade-record-one] of self
2 q# R! \7 l0 ~. e
5 ?7 W/ m* q/ r9 O: b( J# o
set trade-record-current( list (timer) (random money-upper-limit))

5 O7 w5 I4 m( r& n9 T4 w9 a/ q0 c
+ w8 f9 ~* l) N$ U7 {ask self [do-trust]8 {: C8 j. P3 @# L, N. M
;;
先求ij的信任度# v  I6 v7 e) Q0 m# `+ M6 L  x1 N' x
% T; z# Y, I5 Z) w0 n% c& o; j
if ([trust-ok] of self)
1 H# `' h1 G. @5 ]/ K; [6 C;;
根据ij的信任度来决定是否与j进行交易[
, V/ ~# E% h) O- U% d% n# gask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
* E( C. I1 I3 {9 P/ k6 f4 t
1 E1 y: |; I5 Q: p' {[

4 C/ F, p- @! o! Z" a: a6 l7 ~, I3 p# ~: Z* y! ~+ q  M7 f- M
do-trade
& M  D( c- |; b( m9 C- J0 v, n
% L  t2 A$ _: R# m8 \/ x( g# U) `
update-credibility-ijl

& H. H2 d3 M  C- W
: ^, ~5 d9 u; j2 \" c' |update-credibility-list2 @; Y$ v2 M0 b

9 k% T) n5 c( r
+ |' @( i8 n0 k- }" p2 [update-global-reputation-list
) f$ Z; K4 C% Z, D5 E: D
4 y' w8 b/ k3 q- A5 P- B
poll-class
& r+ ~5 _; M) |- }/ k( u+ ]7 e
7 n* X& y7 j* K" O% C9 E
get-color
( g5 d) D2 k  T8 O5 e
1 U# u4 @+ U+ {" ]4 C
]]
2 R; V/ v9 R, S4 S
- x" N. p5 S7 C2 e, t: B# b;;
如果所得的信任度满足条件,则进行交易! _! \& u, f- n6 g  f4 d7 M0 I
. M* h. Q; p% X; F. b# B
[

. Q- A. @6 ~$ R& f  t2 C" r* [/ ?& b( Z( O
rt random 360
3 `7 T7 d& F2 j/ y! k7 i  j, t
; N2 g. Q; U8 U6 J& F# K# r
fd 1

& o( |% B) `- t3 U" }2 {/ Q6 e# P
/ Y% T5 ^! D+ v; m' _" A]

# V* P$ v# {2 u6 y4 `, z8 |0 t- g
5 \1 c) N1 F9 W2 X! @5 \; ~- X7 Nend

5 ]% N. l4 G  ]3 T% j9 ~! x, r6 I! c% J9 X) D) F+ L
to do-trust $ D8 s- }$ H& l  V2 r
set trust-ok False
* I! i" I4 j" S! E5 Y( y# l) c
' J. c3 \, s3 w3 r2 e
3 V5 P1 N6 O) L4 I
let max-trade-times 0
8 @: b0 g6 I8 m$ ^' S9 mforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
8 v/ I5 N$ U# ]' f( olet max-trade-money 0
& n2 d! A- L+ H2 }1 S) K; F9 Kforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
3 m- N: s: v5 q% g+ t8 k4 Slet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
& \$ ?% i8 `+ c! v% e% [3 K6 P* B5 i% L  U  m. c8 T4 s* h0 j

2 h' o$ [/ E! t2 n' lget-global-proportion
2 i) i2 h5 B( t' w4 K% S5 o# Mlet trust-value
# C! z) P& N' Glocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

2 Q" f& S& q( X5 M% _if(trust-value > trade-trust-value)
) ~0 @2 P# j. ^/ M[set trust-ok true]
2 L/ N+ F) Y2 y) p$ g0 fend0 b9 q3 {  ]1 E; h

! G! P9 a% P) q$ u, i3 Xto get-global-proportion0 S3 ^3 D* C: ?1 q) q3 o' t
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
2 X1 ^- }' x, Y1 x" {[set global-proportion 0]
1 f* I& l: t& U$ }[let i 0% K/ [) {8 n/ v' q
let sum-money 0
! c/ @# M8 D# M- ~% X1 Qwhile[ i < people]6 b& v2 y+ w% K1 F, T6 f" S
[* x( w% v0 C, E7 F
if( length (item i+ Q; ]0 p( ?0 [( V0 v
[trade-record-all] of customer) > 3 )

: X/ o- _2 F  m7 G9 y[
. j# o% z8 r8 Aset sum-money (sum-money + item 2(item i [trade-record-all] of myself))  s7 ?& i7 I. W- {. q9 G
]1 a, c( N- G% W, n/ t
]
/ d4 a) w& r8 o% r) }" Klet j 0# u1 M- l  |% K8 G6 u
let note 0' ?7 z6 s2 J9 m
while[ j < people]$ O4 d/ C! X/ p1 Z0 }
[
' {& ]: K9 `& [2 y! Rif( length (item i
- r  I4 E4 d" t, s[trade-record-all] of customer) > 3 )

8 {4 {& v/ ?& V; W9 j) F# y[. [' w5 p* w5 ], N
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 M. O* @& I0 V' j7 [: q, _[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]- d' n# Y0 p% ]! k
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]5 v' Y" ~! {0 Y6 {% I2 ~
]
8 H- i" X" C% N]- H$ |8 I% j* ^) v
set global-proportion note' P0 _8 ^! E2 o- X/ r7 M4 i
]
' {! m4 U  V" ]) q  W: z7 tend; ~9 r1 S! _3 Z% ]- l
# d: z% ?( B, q* j* N/ n
to do-trade
! L! S6 `: o+ u2 H! ^) V;;
这个过程实际上是给双方作出评价的过程
+ r4 {; ]- ^& _* y( @4 O2 F. wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
5 S% |) V: U, L* \9 @set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
. p0 q6 o' @* q) Lset trade-record-current lput(timer) trade-record-current. m# [5 u/ a( i/ d9 E3 @8 b0 p8 y
;;
评价时间$ l3 `( Q8 C5 a/ P/ f6 _, a& z& J
ask myself [* H2 l5 f3 _. o1 O2 S7 S
update-local-reputation
$ ]2 m( V% x# t4 L1 f- _6 E/ @, Bset trade-record-current lput([local-reputation] of myself) trade-record-current
/ B. Q7 A. I7 }- C1 v' l+ }; Y  ~]7 A. _* D3 q" b0 a8 S0 R
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
% M  \& }! _! d% n; M! y;;
将此次交易的记录加入到trade-record-one" Z0 c2 y3 ?: v0 w
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)! Q, Z4 B) h* l! r
let note (item 2 trade-record-current )9 C' @: e, N9 |& I1 w8 g9 V
set trade-record-current
) R0 m; J5 [: Y: v(replace-item 2 trade-record-current (item 3 trade-record-current))

- F$ G1 |' G* G7 oset trade-record-current) ?  z: \1 V' Q( |) n
(replace-item 3 trade-record-current note)
4 P6 l, m( M8 w9 ]9 ?
) [3 {8 n9 T$ k. m& [% `6 f3 D
0 ~5 Q2 h' O8 k& a3 W0 i
ask customer [7 B) q0 E9 g( B# r, A/ m& M
update-local-reputation, \# m3 ^( S: S1 D4 i% x! E
set trade-record-current3 w4 Q/ L' ^& m4 }2 q1 V7 t5 @
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
: b$ A( v. @9 e& C- s: W
]) e2 ?# r3 M* s& @
. {$ t' E0 v* _: e. Y' F0 b0 \
1 o7 V3 b0 F5 l5 g7 v9 j2 X
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer  o7 }  ^4 z8 R" K  C( F- E* x' e  ]

! x7 h  o% W1 O# N! Jset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))7 Y- x( F& g- V) N
;;
将此次交易的记录加入到customertrade-record-all
9 j- v/ f3 I$ E7 z0 Iend, `) |* J9 F1 l$ O0 h3 }% E! Z6 ?% c/ @

3 Q! l; O$ i- I& h2 @) O# Ato update-local-reputation2 i' g! ]3 I9 k2 z
set [trade-record-one-len] of myself length [trade-record-one] of myself
$ t/ C( }% I  e+ y6 M7 N# V: Z3 c
7 D+ p4 u$ g6 ~7 Y8 G
! J, H+ m4 ^9 j) M7 O;;if [trade-record-one-len] of myself > 3

0 h3 T( e" s5 Y( z( l" Gupdate-neighbor-total6 w) }; Y. N3 A& Q
;;
更新邻居节点的数目,在此进行
+ q7 f3 g  H" Rlet i 3& c5 V, P: m* Z9 H3 M
let sum-time 0
. O8 U7 h) l7 j% N. ~# Q2 V8 I5 twhile[i < [trade-record-one-len] of myself]
0 D+ J5 J1 p' D3 Y( R[  `0 \+ D3 t6 I# H) u* j$ [1 b
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
/ ]& r& p' `. d( x/ C$ Rset i/ ~9 b8 i8 Q( z4 ^3 G4 o
( i + 1)

- O/ A1 t! H' z]
0 k. B  d, ?- u+ F( o4 N" Jlet j 3
  b/ ?5 c& }9 {+ g& mlet sum-money 0
9 Q! E: s2 p/ K- q4 o5 P$ fwhile[j < [trade-record-one-len] of myself]& }) v/ W1 Z) {* B+ l/ o
[
# F; s3 q/ x  e7 B3 Eset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)" F2 f, r! w7 a9 F7 A& c# S# G
set j
; c6 Z2 S; [8 G8 P9 |( ^( j + 1)

! J7 L6 u+ T5 y. U]# l$ P4 A- ?3 i5 l
let k 3
" O6 m5 o$ g( |8 Tlet power 0
2 N) ^9 |* M9 s* B0 l+ ylet local 0
8 ?4 ^* s' g: z" J+ M- U  ~while [k <[trade-record-one-len] of myself]+ K, g/ p! a* s7 |
[4 W0 w7 u* h5 G9 \' U$ p9 y; M+ P
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)
# p1 X! b+ c; q0 p8 Lset k (k + 1)
( i# h4 T. E4 g$ i0 K]
2 f+ t8 C7 I. D* j5 P, Rset [local-reputation] of myself (local)
- w6 C+ C) j8 O- z9 j2 B0 m9 ?end: D2 l* J8 v) N6 f. q% ~; k
5 g; @4 q9 \' a- f
to update-neighbor-total# z  M; J& P2 b# r& q# P/ F

  G2 U% g& D/ `+ s  i  aif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
- E! M$ I. A: z( h( [
4 w' n, K( A. Z, _5 U
) c& I, D, I/ p0 p- _2 e! e
end
9 d$ z0 X6 o' E6 w" `! A1 D  b! R; v# {: e7 P  r4 W, H$ v
to update-credibility-ijl . R# w1 @4 R" Z

9 |. |- H! ^$ ~% z! q; `' @* W;;
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。6 n1 \$ o- A# R
let l 0; N6 ^% s! [1 V0 p4 s
while[ l < people ]6 f8 l* A, V% E3 ?7 B
;;
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$ b& V1 z; a8 C1 h! A; ], H
[
: d1 j/ E' f5 P. P* k$ `8 vlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)' ~( _5 y, o$ ~. g0 o8 a/ S+ C$ ?4 v6 N
if (trade-record-one-j-l-len > 3)
, c4 s# R" i/ d0 D: [[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$ I; _; _% t- `
let i 3
/ ]5 z: r: i, Flet sum-time 0
5 Z2 e# k. A( d1 O0 B* qwhile[i < trade-record-one-len]
/ u0 V/ k, b5 R' B8 @9 d[6 X- E/ B) p4 N7 ]; I' v- u
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
) A; J: x8 Q1 O3 ~set i
; N* Y! [+ v* {2 Q% ?9 q( i + 1)
% T& \$ ~9 C2 \* Z- j; K4 g  a
]
5 K7 n0 X4 i+ }$ z4 K$ r+ Ulet credibility-i-j-l 0# w6 \8 ?; F, m) V9 ^
;;i
评价(jjl的评价)* e  H' n" Z9 M
let j 3, g3 Y3 Y$ ]1 ?4 s( w: j, s
let k 4
$ i3 I; [( s3 S8 V3 owhile[j < trade-record-one-len]
6 v+ u' S' ?) {+ [[. o( M+ |8 G1 c2 n9 H* t! C. G, W
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉: |% q' e' Y! q: \
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)
3 L: z/ O4 h' c' ?8 ^9 ?set j
0 D4 S- k+ m2 F& d& k0 F( j + 1)
0 ~# I: k3 K2 P% h* \
]
; B5 Q/ i2 y' J3 H& Tset [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 ))
4 x1 W  u; q/ k$ b/ d
* y& B1 m  ^+ K& Q& D6 p* s6 H

2 S8 Y' g; `. I0 clet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
! Q2 N7 u7 T1 S0 a" o  {* Y' q;;
及时更新il的评价质量的评价: E. {1 y2 @8 \8 x
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
2 \, m+ S) ^% X3 Q  Lset l (l + 1)
+ Q7 d$ S6 _- X  O]
& F+ u3 p' s% _1 ~  G4 }; |end
# X* K3 L# l4 X/ {9 s  O
6 q1 P- v/ }2 i6 q. ato update-credibility-list& [: _; e' e, Z9 H2 i' u
let i 0
0 ]: P$ E9 D/ x' J9 D+ Xwhile[i < people]% a3 p; x5 L! v8 V
[
' z4 l) j( O- v) Ilet j 0
% y: L- E' ^* Y3 ilet note 0
/ i! o) u8 @; W- \& \& |let k 0& K. b% S+ m; @6 K8 T6 U3 s; a  N
;;
计作出过评价的邻居节点的数目
- b0 y5 j/ ?% x7 xwhile[j < people]
( u; m5 F; }& r6 V! f' u[
3 d& j: }0 ~: K  hif (item j( [credibility] of turtle (i + 1)) != -1)
" h. E7 c7 @0 m;;
判断是否给本turtle的评价质量做出过评价的节点
7 U- N. I/ g. b- N[set note (note + item j ([credibility]of turtle (i + 1)))
/ \1 \$ Y: ]1 `;;*(exp (-(people - 2)))/(people - 2))]

+ t' A0 D& _6 _; A, v; `2 U  Lset k (k + 1)
/ z! h/ _% i/ ?) Z]
% Q: L0 ]  q! l: O5 {4 [) oset j (j + 1)
3 L- O) |* I/ x  f]$ x7 G6 I: z) f) D# U" o1 E0 c
set note (note *(exp (- (1 / k)))/ k)2 f9 R! f" G& Z7 r9 X
set credibility-list (replace-item i credibility-list note)
: ]3 W, I5 W5 M; U( z( d/ _set i (i + 1)
2 O0 @& ]; z+ R; K], X6 `0 m  o9 X# N  k# Y
end6 E9 ]! _! P$ ]6 D, d* p* v4 x/ N
" O1 o- x& F3 k0 _8 l& k
to update-global-reputation-list
/ D7 _( E1 t6 C+ @7 C8 i  ~3 ?9 A! p+ Rlet j 0
$ D! l2 G/ n% Gwhile[j < people]2 Y9 e  _& P$ ?3 U3 Z! _3 `
[
8 c+ e- \7 V* }2 k7 o9 U3 qlet new 0! z7 G; h, C$ C4 t, \8 J
;;
暂存新的一个全局声誉
5 d5 {0 G7 n5 _; Q, ilet i 0& t/ {# _  L1 T& J( b) q0 S( {
let sum-money 0. N( ~0 T1 O1 P* E2 k
let credibility-money 0
/ G' W+ q: y; N& e2 fwhile [i < people]8 r7 ]6 s9 U7 \' C& ^
[1 y- f- F  Y; L
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
6 c1 [% ?) M$ j4 }$ A' A" \  yset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))( o" x! z  \' @+ @* Z
set i (i + 1)9 \. w, S/ J1 j. i1 i6 |
]0 p/ T5 m. ]8 X  W; i* o8 i8 R
let k 0
9 a( c+ m" c7 p9 h+ ?let new1 0
% l: P5 ^$ \% z+ M. Ewhile [k < people]) v; s6 @' N+ i$ o) Q
[( Z8 [' ^$ G% A: p3 ]5 f  d4 w) R
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)% x* a; T/ g/ J; ~' \
set k (k + 1)
3 Z5 k8 ^  B. \8 D]5 o. ~  D8 \# d
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
. t" J. `" G" N  X; h8 G7 jset global-reputation-list (replace-item j global-reputation-list new)4 M( z6 T3 k3 T' H: a3 d1 A! V7 t" ]
set j (j + 1)1 R# M; Y  k5 A* b2 W5 K6 G3 w
]2 V$ ]% d0 @# A- z
end6 @" p1 X+ R8 o

# V; _  i0 g+ J( T' R2 B4 B! I5 K- R2 J; O/ U) ]. P

, K9 `6 N3 F  U7 `1 P) i9 b* K% T9 Xto get-color( e- g9 m, F) B% _! e
  G5 @1 F" [+ Y
set color blue

  [, A5 t2 C* h. G. _end
" W1 V* S3 t" C3 A/ `$ I- d5 E
$ m: y& _, J0 j) E+ Q% qto poll-class
- M" Y9 i( U5 a0 C3 v+ P% x) yend
/ d1 k, J0 S/ O8 ]' Q) {  D% P4 V$ ]3 m) ?
to setup-plot1
2 h* F! P( {, c2 P) Z) L0 t" K# [0 l6 T; |9 O
set-current-plot "Trends-of-Local-reputation"
' z+ S5 F; z1 {* v# Z

4 b: n% h8 Z5 F. B5 Xset-plot-x-range 0 xmax
3 ~% K, ~: m( d& J9 O& m

4 P0 z# N1 T, _9 A% X$ H: \1 k% pset-plot-y-range 0.0 ymax
  G; V! Y8 Q" Q( ]" X+ C* q& ?+ H
end
8 Y6 \6 z- X' i  N) [3 y$ [' s' T, _$ c- x4 A) g" n0 o; r; L& f
to setup-plot2
$ X- x. Q1 w3 O: Z8 M
. h" f( }' O9 A+ y1 sset-current-plot "Trends-of-global-reputation"
" C0 E' V# ^) q0 N* F( B
' d9 M( }, j, r8 G# p; g
set-plot-x-range 0 xmax

! Y' l8 H. V8 G: G$ ~) e
8 k2 z+ C3 s3 T/ X: `" X6 r) sset-plot-y-range 0.0 ymax

& M4 t. s4 R1 Zend
- x+ d4 N- f1 i# x9 R1 O9 V1 I
1 A. i& v% K( `, d; N9 F9 ?to setup-plot3* e: H; R0 V0 |* ^( `+ v

1 t/ I( ~4 l  W+ Iset-current-plot "Trends-of-credibility"

6 I% `3 `5 G% R5 P, Q
1 [/ j2 y$ X- ?; k) vset-plot-x-range 0 xmax

4 l/ o6 F, Q- _* f2 F$ D/ [- \
% t3 I% B" v! N1 r! V' T3 \4 ?- Pset-plot-y-range 0.0 ymax
  U0 u4 [( S  y2 i" b: Z4 G* Q
end1 N: S6 g  c' k  q; ?! ?

, E- Y" M, V! ]6 O# D7 Nto do-plots; d& a$ }1 t4 w: D' A: y& f
set-current-plot "Trends-of-Local-reputation"
2 S/ U6 d$ F3 |# k# l5 ~0 {8 wset-current-plot-pen "Honest service"2 o; J9 b2 h1 l$ d( T' _5 m
end
5 p2 t8 e8 d$ ~  n$ T9 h0 _  X2 r2 S1 g$ M8 d& B# ?
[ 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.
4 j5 F/ e, Q* I3 I3 W6 |* b' u0 N
" |' s6 A  a4 k# T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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