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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:" c) j. L* O; Y0 y
to do-business
, Y4 {1 a; w5 y/ W  N$ b+ U rt random 3605 y; C4 x- g+ d* r$ i7 l
fd 1
  b  \: z) F7 }# k; X ifelse(other turtles-here != nobody)[  H6 P5 p- e3 `+ S( p2 c4 ~* g4 b
   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.5 h0 q" K! v/ q) q- U
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ) ~* t4 |# p- }. |' J- p
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
1 M" ~6 M+ ^" [9 V/ T4 W3 \/ B$ h7 a. c   set [trade-record-one-len] of self length [trade-record-one] of self
9 S; p! e& @1 ~6 ?- c! V   set trade-record-current( list (timer) (random money-upper-limit))
- q% T/ G* Z) z) t6 m( o; T
1 W) B  z" t$ G* z- s1 i问题的提示如下:
3 Q: A7 n1 `+ V2 [% C7 A  y( H* {# {' K8 O4 ?6 t1 N/ E
error while turtle 50 running OF in procedure DO-BUSINESS
1 o$ R, M' w4 J' L, C  D6 Q  called by procedure GO
# H3 Y: m" q5 ~5 uOF expected input to be a turtle agentset or turtle but got NOBODY instead.
7 w4 n( R$ ~) ]! E( i8 g& H; ^' T
(halted running of go)
. z/ @/ x, h$ F0 b% O
6 M" H" U7 h; K; l/ g" B6 ^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/ m/ n$ A; G. P/ w( 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1 R# Z  ]; x0 ]- N
globals[  g5 p4 z9 o) _9 z7 n0 f, U9 G, h
xmax
2 a8 M! p& l6 _" n0 C3 \, H; nymax
3 g( n' E# M2 _0 ?6 c! jglobal-reputation-list* J; }3 F, o, o! D) D6 N& z2 K

# t. o+ b4 P- S8 v0 r;;
每一个turtle的全局声誉都存在此LIST
! Q1 `- S' |: O& s. F* rcredibility-list
4 m" j8 f2 @& K% O4 `) Y4 q;;
每一个turtle的评价可信度) j. o+ y6 {# q& ]- }2 q
honest-service
3 L; n( G- a3 d4 K6 m( Z1 x" w' ]unhonest-service5 [, K2 v( w" X" P
oscillation
% n# i( O; l9 brand-dynamic2 H% @& ~/ J% {$ k# o# i" s
]/ R: O: i2 z$ p+ P7 N! z* k. W/ U8 w

! I2 w- `* K% v& Z  \! pturtles-own[0 r6 e$ K/ B( R9 l- m9 y5 j' u4 \* n
trade-record-all6 ~+ R8 P5 {" D" I  x
;;a list of lists,
trade-record-one组成
" |  m$ A" J2 O: n/ b* d5 U1 a( wtrade-record-one
1 ]* I5 O* D: u+ w4 e! U7 G;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
* x  s! q1 f6 \
" f+ `. s& Q, ~3 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]]
( o' p4 M# W# [+ _0 e) J' t6 {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]
: l0 g5 l  h9 W9 tcredibility-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* L. j/ D: q4 i
neighbor-total! U7 e: I. g( m; ?- y0 B
;;
记录该turtle的邻居节点的数目/ g- m8 \/ E3 s: p( w; ?
trade-time  q* n0 c0 I. h# R/ k' z/ i& I
;;
当前发生交易的turtle的交易时间
% b! R1 X' r5 o* V: K. c* g# l0 Iappraise-give4 X1 g7 F8 O8 p' d
;;
当前发生交易时给出的评价. X7 C4 ?2 t; h" e/ l' a9 @
appraise-receive
) a3 }8 B2 C. A' x3 q2 ?+ U;;
当前发生交易时收到的评价, V9 `, S* w$ L, [
appraise-time8 P2 J+ I% O. @* B+ Z1 h- ~
;;
当前发生交易时的评价时间
- e% O$ q+ R' I# S' W- S9 clocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
4 s4 f0 x) S; v5 a5 htrade-times-total2 b( {) k: c0 o5 ~- T3 C
;;
与当前turtle的交易总次数7 l$ j% `1 U, T+ l
trade-money-total* H) ~( X5 U( n
;;
与当前turtle的交易总金额, W3 n  k: {; R) n+ t; z6 `( L
local-reputation
) @4 q  ?$ A  e1 o2 {global-reputation  N" q) o5 c* I" K/ P
credibility0 J% Y+ z& b  ?& V
;;
评价可信度,每次交易后都需要更新
$ j5 F  x- Z3 D3 Tcredibility-all
2 e3 W$ {4 q5 I3 r0 g, {;;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
2 H  s8 Z  ]  W) }& I8 X( u
4 _, a1 Y6 A$ y3 h: W5 k3 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0.59 A& \) B. k0 T  u: v" }4 M0 W5 y9 u
credibility-one* F) W- K+ b7 I
;;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+ x, f& M& D, W; j4 d/ z% }
global-proportion$ {9 v+ ^/ \  G9 Z1 @1 s, Y) q
customer  i- k, y' K8 @# z. {2 v
customer-no
9 A' D" ?3 I/ J0 _- p1 m$ _- utrust-ok
) N* o" p; e8 g' {/ ktrade-record-one-len;;trade-record-one的长度/ ~3 e+ g# _. `: `$ n/ r6 y; d
]  m* o7 U' q8 T1 k( ^# ~
! w' ]+ C/ _2 @* k0 t  P6 c' V
;;setup procedure4 N) ^+ d2 b0 y1 `+ m7 `0 L
, W# T- p/ `& d* V( t% i" [
to setup
7 Z( e, E6 ]- F& e8 Y6 d4 l8 p3 f
) E  I  J, ]+ |6 O3 I# T. k; e6 Nca
# ^. a3 y" }  a# r/ Y( Q
1 j/ I3 i0 l5 }1 p& P
initialize-settings
# h% N* u' L' E: q' `
. n9 _& j7 ?( d( p/ n
crt people [setup-turtles]

, z4 B7 B9 U; Y! o  \  z0 X1 p# T" b" G; |- |
reset-timer
9 I1 ^$ C/ N$ R2 Y: H
' L9 U% v+ \6 q4 o+ T+ v! ]
poll-class
- e8 J+ [# K6 a- h
$ r1 I5 B) h  R' X$ h5 {6 o( L
setup-plots
/ I5 D  r( O4 x6 J$ L% \9 D

5 C  z/ f7 P. F4 y+ Rdo-plots

) [7 l& i+ k5 F, u* x1 }end
! Q8 ^- H1 i% b& \6 h- G  u$ i: Y& {+ z
to initialize-settings
* B& y/ J, ^5 t- Q( O  h; H/ ~# [$ z' B1 B+ {* t
set global-reputation-list []

% G4 `5 }, t3 I, }9 t6 n8 k3 N  V9 h: ^( s% |, W/ i6 d
set credibility-list n-values people [0.5]

( i. L: ^. H( g- F  `! K4 h* Q: g( w: J  q, i! m' ?  L
set honest-service 0
, m3 x/ V; ^" L; X

4 r5 z. s4 f+ {" O( Mset unhonest-service 0

) n1 E/ n' b) Q7 r7 _0 w+ r7 `+ d5 K: J0 \( e. w' e
set oscillation 0
! Z' y) l4 ?, v2 P. U9 u6 K. m4 V. a& t

# P3 r% q& o# F# Iset rand-dynamic 0
" f# L" l' b- G# v- u7 H) p) c
end
; t- V0 k5 J& ^( S1 o- ^1 u. Z- @1 C
to setup-turtles
. Q3 w. k& V, Iset shape "person"6 O) F6 t- U5 q  j4 a
setxy random-xcor random-ycor0 D9 l, R& y# |8 q3 u, ^
set trade-record-one []
3 @; ]6 t, Y( ^1 B
0 S4 Q. w0 f" V4 [0 J* V
set trade-record-all n-values people [(list (? + 1) 0 0)]
  i% n( ], l/ q  C& b, k1 e3 e8 f

& o( @- ]% X' y$ s! V" f" F% o) ^6 iset trade-record-current []$ G  e! m5 M( y0 ]  S4 x
set credibility-receive []
# V0 k4 ~$ a( u! ]7 p/ Wset local-reputation 0.58 W, b; F* B0 w' ?# I) G7 C
set neighbor-total 0
  j0 L8 c! B7 Q! O2 r) Y0 O$ v  Xset trade-times-total 07 d* ~8 }) G6 |4 ^
set trade-money-total 06 o5 A0 F1 {/ @+ [& t5 n% l
set customer nobody
% ~; H: [& c1 J7 ~$ n+ I  Z+ Xset credibility-all n-values people [creat-credibility]
7 W. k& n2 S1 W$ y! m0 ?2 t: fset credibility n-values people [-1]
; ]) l/ q# e+ m0 u4 gget-color
& H5 E4 y: H6 F: U6 x% N' O

+ d- H1 d' D1 j+ Jend
1 {7 F9 l; n# T, w' Y2 q
% U4 h' _( `8 \5 i& o6 K! Vto-report creat-credibility
0 C7 N! f+ j+ o# Y) Ereport n-values people [0.5]
9 f7 }8 o" b( |5 y' {end
! }- {9 r  {- d2 i8 Z6 l6 t) B2 Y, U. Q4 ~  I2 e4 K
to setup-plots
% }' L8 G# n7 K* T" F& t; J) _. d" C! p/ y4 m5 `
set xmax 30
. N# q9 b9 f. L$ m0 r: K
- L0 t- u; x% @0 v0 C! k
set ymax 1.0

/ p: u+ f/ Y- K8 A# h' F6 u8 T! E. z: f0 s" ~& c$ C
clear-all-plots
! f9 A( [, d8 A4 W* Q6 {
: K; ]3 M% u: i& H- n- e
setup-plot1
3 ]9 G2 A" O+ ]6 l1 }7 R3 z$ J

% r, T5 H/ N8 x; W+ \setup-plot2
! h4 r5 R  D0 Q, ]9 \1 @

- c. d4 H% l/ J# ?8 k* rsetup-plot3
" w( x. L+ C2 C6 a2 h; |- l6 L2 \
end% S6 j  u! `! k+ H8 r( Y
5 {9 e. i8 \7 U3 w3 \
;;run time procedures+ r. P8 ?& V- S" j! f2 _
. u* L/ I( c# z- X2 ?0 j% Y
to go8 R, a: e9 q9 l8 A$ t

- }6 A( S0 ~# f! Q. C$ g6 V; l! T  Jask turtles [do-business]

# C$ U* H# M: w+ T! f) Tend
8 V4 J! G0 u3 `# C: r* v
' T* R, l0 c; Q3 |0 q# P1 Bto do-business $ g' U  U$ G& N
" i: A0 b  q) [3 V$ C' z' z2 n8 n
: a) A! P- S/ q0 ]" `
rt random 360
7 b3 L. O$ L- U2 |
- f2 Z! m. ^' B: C. I
fd 1
/ R! c$ P) ]* `* f$ \1 P1 @7 d1 _

9 A" g1 ^2 P7 Q, O2 S. ?% bifelse(other turtles-here != nobody)[

( D; D6 u2 ^! ^# `* T  q" w9 V4 i! [' m% z* @* ?4 f4 o/ F, o
set customer one-of other turtles-here
1 i4 a+ r. n( l5 P

" Z& h& b6 T* p8 _;; set [customer] of customer myself

) o& B! r9 W, g: f$ s0 X8 i; ~$ k9 G0 |, l/ r2 r; p# w% ]" |
set [trade-record-one] of self item (([who] of customer) - 1)
0 A" f, x1 B4 [% D: Z! ~[trade-record-all]of self; R0 I4 T& i% q- ~  p, |5 J
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
, F  E/ i& I, G1 y) n- Z6 V

" p0 O4 D$ ]/ m5 {9 n; Tset [trade-record-one] of customer item (([who] of self) - 1)7 u- m$ Y$ N1 b, w. h/ l
[trade-record-all]of customer

2 A  R/ p" q+ B' q, B2 G& I
/ j5 F5 V3 v0 ^$ U' f2 o) I8 Dset [trade-record-one-len] of self length [trade-record-one] of self

( P7 w- |. C, k4 c( ?( m
" Z7 E/ M( r" ?5 Jset trade-record-current( list (timer) (random money-upper-limit))
( k3 C. A! w0 c' Z- B  ~

( i9 p. F6 w3 K9 s$ [5 hask self [do-trust]" J1 e+ g6 d8 Z1 c; ?* L. L
;;
先求ij的信任度
8 M0 U2 E5 I: y0 n. M
! G3 m8 ]% ?3 Vif ([trust-ok] of self)2 p$ d0 e! Q0 G& J' P# _, U6 z! k
;;
根据ij的信任度来决定是否与j进行交易[
) r- z+ c' `4 S3 h; n$ [( n' `% h3 Oask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself; n  |" ]2 E/ e
* q  _" [8 ]( T( u, @# W+ }
[

4 G. U: e$ e" ]$ f
( Z2 q4 ?# U" R; I8 L6 T2 ido-trade
) w: M. o% X: X/ a
( x: `: `* W% W& A
update-credibility-ijl
2 K8 v% i$ h& ~2 s. m9 M

& H" c; g* g6 v. ]update-credibility-list, ~( k+ x4 E, }$ \* [
. O* b3 F8 ]4 l" K( i2 `6 p
; m1 n9 m/ c& C+ v. V3 X
update-global-reputation-list

. ~3 r" c  a0 u8 }: S6 t0 Q) f" F
7 H. Z2 [! P7 E# A. `( L5 H$ qpoll-class
; @' A& h0 X% ^" `( C5 B" V/ p
. ]* s" \9 a( \. S0 R
get-color
7 S8 j) m1 d: f/ V0 K

, {  G/ K: x8 p$ x5 D: j]]
0 T4 D5 y' j1 y+ T, D& O- d  g6 o. s, r- F( @
;;
如果所得的信任度满足条件,则进行交易) @& Z* O3 ?6 Q
- W2 P$ Y9 }1 `
[

7 ~) z! j. o* h( C  p" Z* C* c: b/ G- R) `( U: e' X
rt random 360

; D1 e6 ?6 P8 f/ p$ ^! V- g  m' ^
" c* C% L! @& w4 h, P2 N: efd 1
  B  v. v2 p/ J3 m' J, M, d/ c! F
. L  `9 }% m8 z
]
1 K, `+ h1 R/ ^/ ~

" L/ ^% C. V2 ]) e7 _9 F- Xend
9 w! j0 y- n8 [) w. \

0 b4 [+ o& ^2 I* C8 Y9 Zto do-trust 8 Z7 h: z, {1 \, S9 N
set trust-ok False
- V  s) R6 O- K6 t) K$ S7 m) d' J* H6 x) r) z: I' c
* U9 f3 |; n- C3 v* \" C
let max-trade-times 0
( f% ?1 {  k1 o$ d! }foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]" x$ {# M8 V8 U$ {' r; {
let max-trade-money 0
* x$ d1 [4 u+ v4 J* g! o2 fforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]: `4 o5 O9 T: a: c! \4 I
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))( M$ N# n8 z9 M1 t2 @4 s
, O4 K+ V" j3 K) Z

8 Z* B5 {  P: o- N/ s6 Hget-global-proportion
2 Q5 G0 L5 K0 P6 Tlet trust-value5 {" Y2 F" s& q# h
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)
1 C4 H& j1 `7 b" N
if(trust-value > trade-trust-value)# y3 G+ {& N9 ^5 ^: G5 m3 @
[set trust-ok true]
4 x6 i* v4 y7 d  Eend3 x0 c4 t  A1 J( w( _- T
, e1 e/ f/ ]0 @/ v6 |- a
to get-global-proportion
/ A6 H* W, n0 k' v. k* q( Sifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)! y2 @7 B: P' X# Q) U
[set global-proportion 0]
+ L9 ^5 H& z5 c6 U. [9 S! K[let i 0: ^( `4 l2 O# z. S0 ?
let sum-money 0
' B8 G) o4 @- r" Gwhile[ i < people]
: p) I3 `, L) D( W" S: g$ M[
4 V+ K; ~8 o4 l- v" `, _- d. tif( length (item i) I* ]( Q) ]' }# ]! Y! Z! D( V
[trade-record-all] of customer) > 3 )
7 D; q+ t& h  H) x+ S4 e
[
+ C' }: A0 ]% R9 V0 ]set sum-money (sum-money + item 2(item i [trade-record-all] of myself))8 y* q* q% h) e6 _- d) e
]4 }) A) A# t9 E, U# c% o
]
$ Q8 J1 b& f5 |$ glet j 04 y7 P. ?9 y- @9 f
let note 02 T/ }* g. Y, V0 D1 _
while[ j < people]3 t3 P3 ^8 [- k' L" j9 F
[
. H% F% l+ F9 W; n& |/ Q8 O# o3 ^) `9 yif( length (item i
4 Q7 {" X) A7 X$ Y8 }$ i[trade-record-all] of customer) > 3 )
6 }4 c- i. k3 y5 g
[0 r$ M; O4 [( K2 m3 N: s
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1), O- g) v3 z$ O9 f1 a
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]6 |+ L' P- l  ]% G) E  m( `
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]# d7 E8 Q2 S; r
]
# q. P) f* s8 d( @/ u: F( r7 i]* H3 Q7 x5 W7 F- `( W6 D
set global-proportion note
8 h+ M5 w! Z, s3 B* F+ r]; Z! H* A, v3 Z. `
end
7 W1 n' S2 _& i9 s. m
8 g0 M: j! }6 G8 }% B5 e" gto do-trade1 P- X0 I9 _* `0 r' x5 a9 W
;;
这个过程实际上是给双方作出评价的过程
2 `2 G( O" Y! Y8 |& u4 l! ?set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价3 l: E* B0 l; o- w1 U* {
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
  s5 U* Y: R6 H" i! pset trade-record-current lput(timer) trade-record-current, G6 D+ P# ~( ^0 q; I4 E1 ~+ a) Q
;;
评价时间
3 Y4 q" r( a1 Rask myself [
/ [/ D& s0 a; G2 m8 a# @update-local-reputation. t1 |( k' H' n5 Q" b% w
set trade-record-current lput([local-reputation] of myself) trade-record-current
2 _3 R7 n! A5 ], b- i; y! B. Y]
% f0 {4 A) g$ S) U% Rset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
: F8 S2 n' z! U/ ^# n/ ?;;
将此次交易的记录加入到trade-record-one) o" U" N1 ]( f, O* O- E# ?. F
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself); F7 J$ m! X" i$ D, z7 w: y+ n
let note (item 2 trade-record-current )* B1 |- G* E' \  t% \* Q
set trade-record-current4 [. h" k+ _! |
(replace-item 2 trade-record-current (item 3 trade-record-current))

: s8 n, y& q: G" b' M0 A$ C9 Yset trade-record-current# `8 ^( F* n5 o$ R
(replace-item 3 trade-record-current note)% D6 x% w$ ?7 x
, ?4 E: v- p6 ~5 C

# ]0 O3 p2 \  Q' dask customer [
( ?0 k; T# q  pupdate-local-reputation
  V  B8 @' S1 }8 q7 Eset trade-record-current( o" P* e2 _! I  ~$ p
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
+ O9 h3 U$ T# ^! i* S
]
) N9 `/ T. D: t, i0 z- I
/ b0 }" [* h/ B5 U/ U. N! v6 j

; E( S0 f* c# b2 v- ]* G" A$ Rset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
/ {- F2 I6 f, Y2 ^5 U! s" A! y
2 ]9 i  `8 Y; h3 S$ L
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
6 u" w6 V. ~; D- P. ^;;
将此次交易的记录加入到customertrade-record-all
9 U$ ~" u; a& \8 |0 Fend0 W8 r9 Y, n6 M6 z! `& H
* e! Q, g$ \* u' ?, u3 ~; V4 E5 {
to update-local-reputation
& `5 M! A  i8 q8 pset [trade-record-one-len] of myself length [trade-record-one] of myself
, U& J  D' s1 S; f& P% P, J; p- _2 f) c; v/ B$ G! h9 I
2 d& E8 p. t7 `+ c
;;if [trade-record-one-len] of myself > 3

) B- w. V: q, l3 X9 z7 U' Bupdate-neighbor-total
5 M; r# x8 o- B# b8 n' \; i;;
更新邻居节点的数目,在此进行
. p, S6 b4 V" Tlet i 3
1 r! b* ~; `, ^! b$ G4 Glet sum-time 0
8 j" O9 E+ X! _, ^% Dwhile[i < [trade-record-one-len] of myself]; d3 w' D; w" R2 @
[
8 i5 H4 K0 y! c3 `/ Zset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
; j6 z0 z6 H- Q. r1 f- rset i
( U) I; C# N0 a  g- y- T9 P  C( i + 1)
; O, }0 y/ `, A
]  v8 e- O8 U% h2 L3 @7 {8 j; {; N
let j 39 n/ ^- j7 I- _. i9 I7 K
let sum-money 0
  r+ A) E. C/ a5 R/ ]9 nwhile[j < [trade-record-one-len] of myself]9 {1 R# w5 U- `& j8 C4 h+ T
[* p) Z7 Q& v$ @  Y4 i
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)
3 ^+ W7 _: _- n. u. Bset j
$ m) u! \" N3 `0 C1 b8 [2 P( j + 1)

! {/ @3 Y: I9 {% j, g]7 b  h' U* D6 A& ]0 `
let k 3
! m1 o9 {3 o' q) q5 a) A7 klet power 0
8 c0 {4 \: j0 W' r( P( r( v8 S9 Z6 K5 Jlet local 03 c: N9 G- C2 w  {
while [k <[trade-record-one-len] of myself]
, T% ]5 W9 D2 S5 E[
0 q6 n; @% U! @( G4 u3 A6 wset 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)
5 U; u" U: O: N6 rset k (k + 1). `8 y9 q. Q- k
]
* n+ G; u. X" Vset [local-reputation] of myself (local)
0 q0 s, ?+ O& tend
6 _- t; |4 x, L% P( d
& W" b! l6 t1 L8 Tto update-neighbor-total) F! `+ ?7 P: P+ ^
3 v- u2 I1 O" ~3 ^
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]; |& J* B6 I/ q, G8 I
/ I( R+ t! a3 P0 e
: y1 q+ Y) o1 [" e. [
end1 H, e6 C# Y" b3 X* Y! v

+ T8 W" j  z, o" J' u. Lto update-credibility-ijl 9 Z0 }5 L7 k) {

$ e6 l0 J) N0 e# ^! |;;
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。+ `5 x% Q( N$ K/ J4 G5 H8 W! L
let l 01 h6 [5 }0 Q8 W0 g* O* f
while[ l < people ]
, I6 J+ e# Q+ C1 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/ X( S& x6 X; k. A" }9 f  E( ?
[
: y/ _% @8 @% H+ b0 f+ s- vlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
0 G% i/ _' N! A+ k9 eif (trade-record-one-j-l-len > 3)  o7 V% g6 `9 `7 I
[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
; F. n8 c# N! v4 v0 u0 L3 d1 ~let i 37 v" M/ z+ K! [3 s& S  N
let sum-time 0) J; O( w8 F# _: ~
while[i < trade-record-one-len]2 B, U" e# T4 W4 ?( h% B1 Y$ T2 E
[8 c5 k& \' ?3 }2 s, y  U
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )! G7 }7 G7 z. b
set i2 f* H0 j8 o& j# ?, w0 H  h
( i + 1)
3 t8 [: m% H# V7 P. a
]7 P8 i. z. i& \, a7 ~5 q5 m
let credibility-i-j-l 0
8 ]% p' w) `3 |: T* p;;i
评价(jjl的评价)4 b, w) A  E, F# S
let j 3- S% j3 R/ L1 n$ u
let k 4* i% d; A# q2 y5 l) M$ R7 ^
while[j < trade-record-one-len]
: \: y" k) F% s. b8 \[
5 Z, h" I( i( Z! 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
& A, q7 b6 S' M( H$ [/ ^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)  b7 U0 |  F$ ~  K( U
set j: ?# S# j% p' H5 a3 S1 b
( j + 1)

4 A+ F" F$ R" N# P7 w]
- ?4 I$ s( F2 D% 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 ))
2 o3 c9 z0 X3 }! m; d$ {1 T/ @- v2 u6 A

4 n. i+ q5 t2 W0 I4 alet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
9 O( j# a; G0 c; A! k1 e  ];;
及时更新il的评价质量的评价
5 w$ }2 p4 T9 V- d3 D9 Uset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]$ ^7 z/ g2 u4 @' p
set l (l + 1)
& N8 ?7 z0 {5 h0 B6 v]
, e3 }3 s0 r  V% `) Pend
8 `& K" q' D6 f1 r2 N( i
4 V- c1 P. _, G3 l' ?  eto update-credibility-list
% C2 Q, q" F5 Elet i 04 U9 u& S) p$ c/ B. u1 ~
while[i < people]+ N" T% M* U' @! i$ W3 @' E9 z
[6 W0 q( K% L, w* ^2 o
let j 02 a, K5 E. u; l$ _$ \
let note 0
0 o1 X! Z' y) ?" p- ilet k 0
$ V# _8 ?6 @4 L: Z; ~, [;;
计作出过评价的邻居节点的数目
/ x7 T% ~; U) h' l! A% [while[j < people]
% c+ K  A/ h. E: T6 U  z: \[
. K. i+ G2 K: ]$ xif (item j( [credibility] of turtle (i + 1)) != -1)
, X- n, y+ c/ w$ N: w;;
判断是否给本turtle的评价质量做出过评价的节点
4 t9 ]! a% z& ]" p' Z6 r[set note (note + item j ([credibility]of turtle (i + 1)))
1 \# A* U4 v; b, Q' |3 m- p+ i, G- X;;*(exp (-(people - 2)))/(people - 2))]
. Q$ n) P; g4 U: _7 l( [1 f6 Q
set k (k + 1)
0 _+ y7 J! f* L]# J/ r' D9 U( P/ B! `/ X! _' G5 l
set j (j + 1)
: C$ ?) s/ B- O- S6 m# z  {]
+ n1 a9 ^( X: L# Uset note (note *(exp (- (1 / k)))/ k)- O; ^' n4 e& N- E- \
set credibility-list (replace-item i credibility-list note)
7 X3 N' ]6 {) E/ y& ^  zset i (i + 1)
( _+ z3 v  ~$ k/ L6 a/ [1 ~8 E]5 j( L6 z- J! c' f$ Z1 j1 ]
end
  Z, S1 g0 W- c. [: Y; @- Q- s
7 n* ?' ~$ N1 l6 sto update-global-reputation-list( N0 A/ @- W  l) g4 u) _
let j 01 L+ W" f. r# C9 K) A: H
while[j < people]
8 Y' ^* v# C2 m& L0 K[
+ u* O. g/ w$ r5 T& ]! Rlet new 0
4 e8 H1 k7 a% [% E$ a( G;;
暂存新的一个全局声誉3 @. R1 H3 ~4 ^( O& K9 w
let i 0
1 a. S+ O$ q3 z, j1 D! Ulet sum-money 0
% w. m  g: A* r+ W% H$ Ilet credibility-money 0* A5 D- e/ l2 k% ]4 o6 s8 [/ y* R
while [i < people]8 h" w, L6 t: b! N# ?( i% D* V
[
2 L: S- y# H6 M! Q" }9 O% u& U4 oset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))0 d, j( g: }! M4 s; d- {( q
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))* Q" M  J/ j0 _# \! W
set i (i + 1)5 X( h5 B0 a. Y- L
]& f1 P. M* `8 ~6 \3 |" b8 j% v
let k 0
/ d" J( ]- }& m3 @( Dlet new1 0$ p) v4 v' `! G3 y' g9 ?" Y7 D
while [k < people]1 u! w  S# Z8 w! E1 X
[3 l& g. l, a  P5 }$ `5 L
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)
8 ^4 R) K- ?. i4 c* Q! T) Qset k (k + 1)- l" h5 {- X7 E
]- p4 T  O5 D+ [1 }* M! e
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
6 o; }1 g- e- d' _3 bset global-reputation-list (replace-item j global-reputation-list new)
3 Z" @( ^$ ~5 z  tset j (j + 1); Z) ?6 r  k8 P6 R+ y
]$ {( G7 A" [  X
end
, ?: \3 F& R  [! r. @/ y
$ _( z4 q1 d0 O/ s0 c) `1 x0 c! ^2 M- Y  H
# z2 c- B' G; P) v# o: I
to get-color
6 s- `+ N, `+ p( p  T3 K$ m! a4 X( T) |1 _- J  n! B
set color blue

8 [; c3 C0 ]1 i2 B8 z6 m7 q/ \end/ i' b! S( B% P

# z8 d* f  q! D! H, [to poll-class
* J+ A9 u. k2 F: Dend1 S+ D2 F: T- @! o- i4 f9 t

) W; v3 a, M- A5 Ato setup-plot1
8 K5 o; g% ^4 g: w2 _, ]+ l2 Y, X
set-current-plot "Trends-of-Local-reputation"
, h; |! v% n* O- u

- o3 O" B8 X3 q4 Eset-plot-x-range 0 xmax

! X8 u6 B8 Y1 w4 _7 r) G3 |. U& H/ ~5 e7 E* S! r
set-plot-y-range 0.0 ymax
! l" Z+ W( [  F# T
end' x; N& K2 X9 E3 d7 R; I$ e& r
/ Q: I8 O* T$ }& I" v9 p4 X$ V
to setup-plot2/ r: N/ N: i: j
; J7 S$ `/ ^# z
set-current-plot "Trends-of-global-reputation"
* [  K, O9 w. T5 P
9 b0 @8 Q& a! ?& [5 u7 ?
set-plot-x-range 0 xmax

# a7 l. a6 u; o4 p5 n% x$ r5 p
8 T& _. S8 d2 s" G( ^* n: Lset-plot-y-range 0.0 ymax

& b: Q3 P0 y# k, z6 G! F9 q" D* nend7 U/ B4 c; F( Y( _) V
# I& `8 S, \6 c7 ^. P
to setup-plot3. C* T! h$ _8 Q) N6 ?4 @% ]
2 E3 o8 R" f3 f( b; {
set-current-plot "Trends-of-credibility"
/ }2 Y1 n* G- N

4 I- V4 Q' c5 V3 C. S9 ?/ @" bset-plot-x-range 0 xmax
% E  x2 S, }+ o7 Z2 @: C; j* c# T
. X4 R  X( x. T: S9 g
set-plot-y-range 0.0 ymax
: R/ Z" q7 |: f/ E0 _. ~( t
end
$ S( k& s1 V  I, z1 Q% G; E6 W8 G
+ z0 x: L  z2 e% i8 Rto do-plots
5 e: g8 G  H- |2 i: g, H. \/ ~9 O) vset-current-plot "Trends-of-Local-reputation"
2 A3 V0 a  b' ]/ m1 ~4 gset-current-plot-pen "Honest service"
' T* }8 g9 p7 ~! j/ ]end
3 Z& Z; y+ T3 L5 x: G' R  G' h+ S) W$ ?- a  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.
& M4 x  ~- m  A2 r+ A) z" N8 D! a
0 _  Q' N( o& ]- T* U3 a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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