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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:
. k- V3 t" |7 Gto do-business
- U( a+ l8 w: K1 y  Y3 A+ m rt random 360' u. {! D0 P/ |2 Y! K8 i. N" p% @
fd 1
8 x% Q! t- `. X2 N, s' k4 A$ l% R ifelse(other turtles-here != nobody)[, V4 U$ y0 j/ }3 l/ @
   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.& f$ X1 B1 k+ y; F* ]
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ! R2 D& i* A% i) D, O2 X* i
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
3 O9 H! f- R3 Z  E' |+ ~( T   set [trade-record-one-len] of self length [trade-record-one] of self7 a2 _8 u1 A/ ^; V# x
   set trade-record-current( list (timer) (random money-upper-limit))
/ V/ y$ O7 L( ]* ~: c5 Y- l8 C9 b
问题的提示如下:# O% S( ~. O! v. m- T. O9 M$ g

4 {3 ^( B3 G1 Rerror while turtle 50 running OF in procedure DO-BUSINESS
/ f3 B+ E! i6 w  called by procedure GO
: v  O' a$ S) _+ E' mOF expected input to be a turtle agentset or turtle but got NOBODY instead.
6 `! h0 h! w5 ]- f  ]
(halted running of go)( J( ?7 e- E0 `! s
- Q3 C5 e6 D* t! V2 R  \
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~~* G7 c) V- _9 u6 k2 U4 A" ^; _6 R
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 G5 `- P2 ~2 m) Z+ Z( Y! u& _
globals[" ]: H* x" V$ L/ g- O. G
xmax
( o: \6 k4 V6 J  ^# t5 xymax: ?6 v3 O7 N' p8 d9 d( r( u
global-reputation-list
! X( M* I1 O0 |% e$ z/ E, L! H! S! Z, w+ X' ?
;;
每一个turtle的全局声誉都存在此LIST$ W8 j/ Q  p9 L" v, R1 O- k( R
credibility-list2 T; c/ }; y8 I
;;
每一个turtle的评价可信度' P4 [9 V. \& a/ H
honest-service# @: y1 a$ t$ J1 E6 U) X+ b0 A( {
unhonest-service) T3 j' ]) ^. F5 W2 e$ w
oscillation
5 x8 ^' R* F9 Y; U" V% Erand-dynamic# Z% ?" c9 |" P' v4 }3 n
]1 H3 l& A( t1 @& ]* I: |, H' k
2 p- u* ~  T% i8 @
turtles-own[
! ?' `! e6 s2 Z. b! L4 Etrade-record-all
+ w3 @- {% h5 A; B6 k;;a list of lists,
trade-record-one组成
/ F1 w/ l' m* Q- y2 h& ~trade-record-one! m3 L$ Q( f! y
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录" |# k9 v' g+ D  r

$ T: _; M$ f( B$ g# Y. G3 C5 I;;[
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]], {5 E% A9 a& T. \4 F2 J
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]
+ i$ u7 k. K3 c' y: i3 icredibility-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
; f' J% Z$ ?. uneighbor-total
6 ?: P/ D) @4 `) B- L( l;;
记录该turtle的邻居节点的数目" s, F+ `. l$ W% |
trade-time( T7 u. v+ c* B7 i8 b
;;
当前发生交易的turtle的交易时间
8 d6 o/ h+ l, x8 k8 n1 Nappraise-give
* H( f$ T6 |4 Y% }; X% V9 d! w+ V' J/ U9 K;;
当前发生交易时给出的评价
% c3 d: A. ]7 {appraise-receive
* {% X) C0 K/ `5 G2 Z;;
当前发生交易时收到的评价
8 i% H4 n- L" D9 j2 g- n) Gappraise-time; m& U' l3 m4 K( j3 v
;;
当前发生交易时的评价时间
2 x6 y( l& @5 y+ ?* J  }. hlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
* Z/ C# w) l! x) ^" T& @trade-times-total
# ], q( _. M2 Y;;
与当前turtle的交易总次数
8 t; q6 r, t. g5 g; [: h  j% i" ctrade-money-total/ E. Q; }: z; T2 ^/ u
;;
与当前turtle的交易总金额6 ?4 R9 Y9 B  F5 E) h+ e5 f7 L
local-reputation* h* v* _- f* `0 E
global-reputation
0 B" g9 _2 U# L# S" ~credibility
/ w' d7 ^9 y8 t1 N; X$ j7 g;;
评价可信度,每次交易后都需要更新
1 \: V' q  f" ]- q% ?" l7 X* [3 Scredibility-all& B) V$ s! \. N0 o5 Q+ b( D7 j
;;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( M/ @' J1 @' e3 U

# H" ^! z6 _* ]5 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# {! J, Q. j  \1 Q8 r
credibility-one7 F4 k0 m  h! ~, Z& k4 I3 Z
;;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
0 M: G9 W, J+ S3 h& Z! ^# yglobal-proportion
2 D) @, X# Y! J8 Y! Y; Y8 Ucustomer
8 Y, _5 r2 t" c$ s( Ucustomer-no5 R) }- \. C6 S
trust-ok
4 z* r6 C, x; etrade-record-one-len;;trade-record-one的长度1 g. @: t/ q) w4 H
]3 M, e5 ^/ M+ q9 w# [
% o) V$ h$ q; W' l1 B( h
;;setup procedure
8 J" O; C- K7 O8 ]" j0 s; e& j* V- @6 n
to setup
8 Z" e. n' g" g" w+ I8 f- q2 {9 r1 g
8 _' b' V" }# l5 Yca

8 s) i  k+ n0 L0 _& ]* V: l2 d
0 x  k% d+ W2 T1 G# I: H  Q* b/ ninitialize-settings
. D6 o# b! _. x! X# t; `
. h0 D3 |- B  x' t: U7 \
crt people [setup-turtles]
& v7 e/ t/ I" R9 E. w2 f

% D9 x7 G! |* N( S8 ^# q4 Wreset-timer
8 d( F; H5 g1 o
) h9 Q# r: ]. C8 X
poll-class
) H3 d3 `. v# ?$ X2 }" k* ?) C
2 q* H, y, T; h' C
setup-plots
) i' S, d; Y+ }2 B) n& x* ~

5 r& R. _) Y0 q( ndo-plots

' K$ e9 r0 @) x) P0 ?8 nend1 g6 K0 r. m% j8 s) _- w: V0 y7 |

' p, R9 C) t$ q+ ], A  p: F: P, H5 _to initialize-settings
5 c# U; ?: x# k7 k0 P
) V6 q4 i' l' k" Cset global-reputation-list []

2 D4 o/ N- d. N3 s0 E  X, q; [3 c7 O) P5 y- M6 R+ k$ h
set credibility-list n-values people [0.5]

' q  Q1 n, v% X7 A) p0 O* Y3 {5 e+ ^" ]% e4 ^0 Z0 u0 Z
set honest-service 0
3 v' \9 [4 g- d
$ v9 j2 l3 G. N6 n- x
set unhonest-service 0

; d/ \3 P* M+ b7 R. c' Y
; S/ m1 `0 i% Y" i$ f- |- P; Pset oscillation 0

% m, k1 v& O+ z7 N1 `, R) F) i3 h% H
$ v7 b; Q$ [  u3 dset rand-dynamic 0
; n. m6 H# \0 E1 L/ l9 {
end
7 s. J2 \2 ^* D# O8 s  D$ a
) X( g7 c5 n5 P* t- U8 l! gto setup-turtles 4 H/ s; p* ^/ Z; p1 ~9 b
set shape "person"% `) z: e+ ]. q0 O
setxy random-xcor random-ycor0 j( R! A) k+ P% F# k9 N
set trade-record-one []
2 B0 q( H6 b; E- z7 H) V
0 m  Z1 r0 l; T% h( F% b6 {
set trade-record-all n-values people [(list (? + 1) 0 0)] ( W: S( l; L- K( O

/ F$ o# M' ~7 ~; hset trade-record-current []) A: g5 ^2 P/ g2 [9 g$ g) p& I% {
set credibility-receive []
, U% n3 X. t- z. q9 Hset local-reputation 0.5# t6 U0 m. M8 V" \" B$ u; h
set neighbor-total 0
; ?( F: Z0 G% wset trade-times-total 09 Q" R1 W- Y$ h' H) R+ Q
set trade-money-total 0  v- t4 h/ {6 `2 N( s, @8 z8 J
set customer nobody
" D/ o( b  j5 @+ `0 y& `set credibility-all n-values people [creat-credibility]4 k: B$ U2 n+ S9 ]1 F$ e# p
set credibility n-values people [-1]
4 ?- S) _* X8 S0 p  {5 D& ^get-color% _9 D/ @3 l  L* G' @1 L' }

" K  v7 ~: C  |1 Y" lend
# Z: R% [5 P# U" `, v: p( E4 h
9 k3 C& Q+ _" U; kto-report creat-credibility3 O/ R# Q- ~  X( h9 p
report n-values people [0.5]3 Y/ s. Y* w* K4 L; ]- a
end# Y/ J* i  j& \2 p$ ?; _
8 T: E0 D9 n9 a1 O
to setup-plots
/ l9 x& H  d7 V4 W. O4 ~6 f: e( J; [* ?+ |' d8 j
set xmax 30
. \' d0 k" M. J* h

$ N  O5 C: T3 w8 p4 Fset ymax 1.0
' X; p9 U" |& _; X4 o

3 L& ?+ G6 V6 ^clear-all-plots

8 B0 G9 G- w. S, s8 y4 l& A  p5 a% X. {) E$ b5 P
setup-plot1

+ f* [: v5 w; H0 V" E! ^8 ^2 [: f: E: s6 L! G
setup-plot2

$ Q1 n# W6 b& ]. V4 p: [* {6 d) h/ ~, {5 o2 b
setup-plot3

3 l2 z4 g2 _, [# i6 f& a/ s3 qend
( d5 Z$ d. G9 ]% `
% D+ M% ^( f* C. c;;run time procedures& x; m0 p& v3 Q& O+ O& t

2 w. |7 y6 w4 Jto go% O/ I8 I" h& u
- G+ H' Z0 U) X/ H; d+ B
ask turtles [do-business]

' M7 g* w6 @/ @: }end% Z9 P1 E/ S5 k) A; Q  Z, ]. o

9 u: L  n( {  N9 g  ?9 e0 L' vto do-business 3 k+ M' X; q: D+ }9 B

) K. d( S5 L) V* n/ r& \: d
* v* `8 X  Y6 C) q7 R6 ~rt random 360
; R  T% F6 p+ N9 `" |$ G* }$ U
% R, V$ W6 O: q: M) _8 U
fd 1
2 `' K& S! X' V/ b5 O! ]/ p

5 ~5 k, Q" q; ?, C+ \+ a6 Hifelse(other turtles-here != nobody)[

/ y; G' h1 J; S) P: n8 A9 X1 A$ w  f" Y* d
set customer one-of other turtles-here

" A( R+ r) D1 c$ m9 b' q
7 `* {- v$ R0 V$ E;; set [customer] of customer myself

) k( D2 ^" P+ W+ v5 u
- o$ M6 ^" a: J+ jset [trade-record-one] of self item (([who] of customer) - 1)
% |- P& r( {/ u8 W# V[trade-record-all]of self& ?) |4 M6 M" E9 x5 ?8 D; \
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
9 W6 m, _$ ~4 i6 _1 v* g7 G
! O& [3 Y: T$ V* q
set [trade-record-one] of customer item (([who] of self) - 1)* |! W) M$ i$ X4 @. n2 c7 S: D
[trade-record-all]of customer

, A8 M- {( J1 A( `' b' R% h& ~
. v' Y" Q% |8 |( V+ o" vset [trade-record-one-len] of self length [trade-record-one] of self
4 F% G" `! O; ]; ~& C7 C

' h) j2 j# H5 [  ?1 W2 Kset trade-record-current( list (timer) (random money-upper-limit))

+ l9 x5 q% P# A* K+ Q2 s: r9 m
( C  q0 [8 o, U; x- a9 q  |6 vask self [do-trust]
- P8 E6 h5 }9 @, r. ^;;
先求ij的信任度" ~( c8 t. v: N% S

  q$ q: _; z, |% ~7 X) Kif ([trust-ok] of self)
4 D. n& S3 I9 N3 f;;
根据ij的信任度来决定是否与j进行交易[( k. S9 P4 ]$ J9 T% d5 d( g
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
- f  _+ S, c; R1 L
: Q& z0 }2 |& r$ h  \: G[

+ g2 C! h# M* L+ O3 i" O
7 {* [0 g+ w9 Y! ldo-trade

3 E: O, J+ @6 |3 o
+ ]1 V, f- M) f# R/ z; R+ v/ Eupdate-credibility-ijl

3 E$ |  W& l  L/ T  V5 ?- P
  C8 e* o$ m" B5 z9 e1 c2 Zupdate-credibility-list3 o  O( T- s: x1 e! V. |

5 |) h6 \3 b& Q( S! q9 H4 B0 m& C1 d; B  v+ }- w" X3 t
update-global-reputation-list

$ i! L! }# J, w3 F0 q. H+ y) f) e! N
poll-class
9 f2 A4 O1 Q  H8 f, H% ^" L, o9 G
" ]' `" n  l. N1 l' I( L
get-color

5 b1 }2 t2 V- n' N% l
7 Q/ }! B& W4 u* ^5 t]]
4 n6 D# x4 ^2 j% T  D% I/ T% X/ c% }9 b
;;
如果所得的信任度满足条件,则进行交易
2 ]! m1 t$ Q$ D0 a( P. i3 R
% h, V8 d0 [1 V5 y& p9 r1 G6 U$ T( s[

2 }4 Z. n" b4 v7 e# t# P" [, `: U3 r# a  i
rt random 360
) L3 R2 }) d& z/ h
& S, `8 s; \6 U
fd 1

" e0 A5 e) U+ @( W4 f
# q( |  I, x: a# F( S]

. M% U" b" p) I0 J5 A
, L2 L3 ^/ d- V4 R: \! l6 y  x+ |end
. A- m+ M( Z* i/ H- {

9 S2 V/ q* }: O& O& Uto do-trust
' _5 L5 `2 l1 ^8 o% Xset trust-ok False
8 B' E" R* z0 V( k8 ^! z1 x
0 \% E6 p1 }: m
+ U! L" \  ]& r1 O' p( \
let max-trade-times 0
# |3 E$ e8 r, ]1 |9 kforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
5 ]$ V: l3 [7 C3 {$ [9 f% P8 wlet max-trade-money 0
! n9 v8 G7 i" Tforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]& d- o& o% ?. k; J3 Q8 R
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
3 U% _  s9 a( `: Q! U
4 \* q2 M. I4 z$ N& [7 S

, L8 z( i) f  fget-global-proportion7 D% K6 m& d; C' P
let trust-value
! T  K' F6 x+ llocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

. r/ q6 y0 i7 g' F$ J+ m* }$ \+ bif(trust-value > trade-trust-value)
; ^* ]& ?. c0 K2 Z0 l9 j[set trust-ok true]
7 J: z8 A) ~# C3 s/ l* hend
1 M( q, R9 b7 n
2 ?' O- t4 @; Wto get-global-proportion/ r2 `, f" d! z3 k' U1 x
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)3 V! f$ B8 I' p$ q
[set global-proportion 0]
! s# V- W0 W" v! |  p[let i 0! B' Q4 S/ o1 x8 w9 I. o
let sum-money 0
) t  |: F* N2 \) w; _while[ i < people]
( n/ @. |9 W! r' l) a[( n; c+ s  z2 f
if( length (item i7 r5 G) @' t. W) u
[trade-record-all] of customer) > 3 )
# d3 q. ^% X1 K; X1 H- K
[- \, V7 u5 J1 \4 V1 k* P5 n; c2 I0 H
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
# I+ A' i9 _, |& d( R7 }]
) e+ C* t) l4 M  e, l- [2 X* I]; S* d! X7 t! H" W
let j 0( x% J& S8 a" o6 Y. h7 h
let note 0# T9 @0 U% q5 L( }, ~+ L9 ^, c
while[ j < people]8 k0 e5 ~0 a: B, G) ^$ h/ Y9 s
[+ J( H2 v" G8 I, E: X
if( length (item i
% [7 E# T% g; v: q) E! j& M[trade-record-all] of customer) > 3 )

( d! `. w! [0 f: H1 B7 g[' l, N% D8 _& b' H
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)" @4 F' A$ L1 P( V$ a6 C
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]2 E9 K$ P! A0 [- M
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]% Q! Q. ^" {) U1 X$ c8 g) Z% {9 B
]) j* s; Z7 p0 W( @. x' _
]( @1 z/ |* v% ^+ j  B- {9 f9 {3 S
set global-proportion note( `4 A: ]3 [' ~9 w+ H. e1 Y0 o$ B
]
/ E& _) E5 ]- P( r% ~5 z+ f8 yend' n6 @; z# G; {) `# O
1 v5 T8 [1 U# `* O0 K/ E
to do-trade/ L: }* `2 M; V/ W+ w
;;
这个过程实际上是给双方作出评价的过程
  |( d' c1 W1 s* K! |/ Z4 B5 ~set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价5 w+ z) f! h3 \
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
6 C$ g4 m, g, J" T2 }set trade-record-current lput(timer) trade-record-current
( z2 p9 W8 p& A7 K" ?9 \1 t5 I;;
评价时间# u! Q, @  x) z+ t
ask myself [
4 V  w! p( X# v9 _update-local-reputation# _5 q1 s9 i" g4 a
set trade-record-current lput([local-reputation] of myself) trade-record-current
7 H# A! N+ C) ]9 r( D) Q! X]
! `1 X; \4 S, S( P8 v+ J  Bset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
1 b1 {7 x, v) B* f) };;
将此次交易的记录加入到trade-record-one
/ L8 z2 N' [! N' g, f9 ]1 uset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)6 u3 D; {' g$ ~. s! N  p
let note (item 2 trade-record-current )5 R6 ^4 n  }; L; }3 `3 N
set trade-record-current, ], Y. x$ X/ w" r
(replace-item 2 trade-record-current (item 3 trade-record-current))
  A6 g% f% K! W# u! v
set trade-record-current7 {7 n- w7 y. a# _9 @1 O0 q  F1 L
(replace-item 3 trade-record-current note)
% {3 F! n/ F3 U* z/ V; R, p: w* N1 X
( R8 U! e+ Q) i9 U; n# A; T* k
9 u" Q- c( D7 J* E3 x0 h, S
ask customer [
$ |4 ^! j: X8 @4 z5 Hupdate-local-reputation, N; ?, F% O1 O) D, ^3 `% h: u1 c
set trade-record-current
, o* s8 E7 D3 h2 B(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

4 p6 t! k+ h( `; A]
2 A- _( k" }4 y( t. w# P
$ z+ P; G3 E7 \# J, F
/ [6 c' i2 y$ B0 p# ]; U0 @# o8 @1 A
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer+ R: e* N, V) E7 e1 e4 U
- X1 K$ t7 Q9 T' N
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))+ \4 F# ]$ O3 F* K! U6 Y. K$ z
;;
将此次交易的记录加入到customertrade-record-all
' E2 r' j. u; T6 send
$ u6 x. ?, f3 w0 I( x3 S3 w5 J5 a; N1 R' A  `& y7 T
to update-local-reputation
) w/ a: q6 c2 N! _7 p0 r( pset [trade-record-one-len] of myself length [trade-record-one] of myself
# e+ c8 ~. y: c: D$ J' @
2 m; v0 P; M  P. @) l. g, L! |
;;if [trade-record-one-len] of myself > 3

0 G" i# N3 W+ @. m6 E7 _update-neighbor-total
$ _9 v. k/ D; }/ W( m$ F  d; c;;
更新邻居节点的数目,在此进行
5 a+ k4 J7 o0 X6 d, ^+ @6 nlet i 33 p% a2 c* b+ J$ u; l$ ~* j" W
let sum-time 0
& Y, u; X. S( z' wwhile[i < [trade-record-one-len] of myself]
; b5 O' w; J9 E5 z[
6 y  ~8 h" }( Sset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )/ r4 Y; a. d- F6 F) m
set i5 p8 y" m2 y+ R  r7 p# C
( i + 1)
! R8 [& X/ w9 c
]* X9 X. Q& S& F# j# \9 L, a
let j 3
3 x6 j4 F$ d( }$ [4 alet sum-money 0! Q5 p) Y6 A! I
while[j < [trade-record-one-len] of myself]
  L; ?0 J' u( I+ h[9 D; u1 ?/ a( b# \
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)8 r: {8 O% @+ d' V% }! ]
set j: L' }7 E( Z  \+ e* h2 S7 y
( j + 1)
2 Y* j8 ~+ |+ u0 [4 q
]& j% r+ Z/ V5 p: n6 w
let k 3
# n* s/ G. Z+ r" ?, w; g8 M( C1 ulet power 0
3 d/ {" v; T0 f1 d' E; Klet local 01 g# F4 o7 ]5 \8 o. E) v
while [k <[trade-record-one-len] of myself]0 X5 I" C& q" ?1 t" B* e
[
! ?4 o% t5 x) a2 f; v- zset 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)
, j" U: Y/ j- c: c: [. ]8 lset k (k + 1)9 T- G( S! b, l; V
]
  _7 r# u/ x) T' w7 F2 A& nset [local-reputation] of myself (local), V' c) Y! d3 a1 k
end- y+ k* ^3 {+ o6 D9 {

  q8 T- K7 M+ u) j" H9 G* Qto update-neighbor-total
8 W) k* u6 b) W4 D8 ^% j+ d7 f: O0 K2 t
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
1 D0 O: P# L& v/ x; f$ j; R* F7 C
% u! c1 c3 R' t! A9 v

: m( Q% A* h  J- Yend
  R3 N0 V/ d0 Y, `' u( ~
1 |3 z0 N( L, u; |. h* Uto update-credibility-ijl
6 ~" u. h6 Y7 p6 U( z* _
& g5 G: W) G! ^6 q" [; @;;
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。
# ]* L3 y8 b# V& \$ n3 V7 alet l 0
, {, k) [: {( c% J! t7 P# m! `( X/ gwhile[ l < people ]5 ^8 t. i" Z  d9 i" q9 j
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
& ^6 m$ s% h; S9 o5 q  }) t$ [[
0 ^' ]9 z* G7 [, H5 Glet trade-record-one-j-l-len length item l ([trade-record-all] of customer)$ C% `4 W$ ?6 ~+ D  W& q) U6 A
if (trade-record-one-j-l-len > 3)% Q1 b( P0 ^, n. l
[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
1 {2 ?+ S; }1 B2 S+ T3 ?, t  Dlet i 38 x  `  f9 J3 A% Z, n
let sum-time 0
0 f. R' u: M* t0 {% jwhile[i < trade-record-one-len]
- i! a5 ~* I/ o3 o1 D0 `[
* z+ F; M) b/ }$ I* J; C: ?3 B4 Zset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )& z- D) _0 _8 h  k
set i/ d; l) X, A5 k7 B
( i + 1)

* [8 |! Z9 n6 R- l# I]) s# c' c7 s* M7 o2 ^/ K5 P; i
let credibility-i-j-l 08 a- _( u6 S1 Z/ @3 h: v
;;i
评价(jjl的评价)
9 B$ j5 T4 P# Olet j 3( V: q0 a; Q% ~* d- D" |9 c
let k 4+ D  I( R4 X1 ]+ }* h, j! O! m
while[j < trade-record-one-len]
. p4 ^+ `- L  Y* h4 R+ L# ~6 T[
( n/ f; h& [( fwhile [((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
% L  R1 X& q7 U3 L$ c, q6 gset 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: S3 p3 n# r/ Lset j
7 A6 c8 ~0 ?5 p! }  V( j + 1)
9 K; I$ J; o! O
]
" n4 a6 C/ T+ ~" b. `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 ))6 S4 L/ H* J  R) ~6 Z' Z8 L, F4 k
% N/ E6 z8 X% [; \. C9 P+ q
9 J7 m) ?) K8 M3 ]: f4 z3 z+ P4 y
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ l$ V) Z! ~. _$ x* S) o2 {1 w;;
及时更新il的评价质量的评价1 C4 @# w. O5 ]' a! X
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]2 \9 [* U! g3 v( [7 l# h
set l (l + 1)
* x4 V: P; J0 Q4 {]
) I: a; @7 I: f# q- m: I  Uend
6 E6 J2 I( ~7 S- R; l. X4 W# T% T- z
to update-credibility-list
6 |! k7 s* Y, B! C* Glet i 0  C3 x8 ~8 y5 q+ t% R
while[i < people]
% ^+ J; v& g" K  [9 f[. P, T6 g$ J6 `2 y
let j 0
" t8 b! J5 N6 y; ^6 C; Q$ Ulet note 07 R' |1 ^5 K) ^3 |6 X8 v8 [
let k 0
6 e5 d) M3 y3 z9 [;;
计作出过评价的邻居节点的数目
, @* _' F/ q2 Z- Y4 Q: nwhile[j < people]
: W9 b0 T- m4 y3 r# e[
7 L4 N  F+ d6 Wif (item j( [credibility] of turtle (i + 1)) != -1)
% k. i6 x1 @. f; B;;
判断是否给本turtle的评价质量做出过评价的节点" ]2 X' m# Q( ?
[set note (note + item j ([credibility]of turtle (i + 1)))
3 |7 T: U  H5 O- |+ V% ~;;*(exp (-(people - 2)))/(people - 2))]

7 P( \0 O, R  ~8 c, Yset k (k + 1)
- B" x/ O2 g- g2 M+ t]
0 N2 U5 j0 W5 y/ _  X2 ]' W, j/ hset j (j + 1)
2 G0 Z7 {4 p' E]; Q" l3 c) F* y) ?$ Q7 k0 U2 \; ]% _! |$ v
set note (note *(exp (- (1 / k)))/ k)
2 d% a4 I  ~6 \# e& _) W0 fset credibility-list (replace-item i credibility-list note)1 C5 s, b5 N. I2 r, A8 p8 [0 K
set i (i + 1)+ C, J4 h3 t8 }, J+ c0 t! {! u
]& X+ X! N6 V& D3 w6 B" G
end+ u+ `3 V! U7 X

+ _& b: \. s" d, vto update-global-reputation-list: o. i0 @" Q% {  H8 P
let j 03 n+ z5 [' u+ k6 @9 h' C5 b* S
while[j < people]% H# A* _+ v* [! e  U$ x
[4 r* \( H9 {5 P! r  P- A% w# G7 h
let new 0, j, N' }& m6 R( `. x; \1 D
;;
暂存新的一个全局声誉
, O$ Q+ Z- G! [1 a/ wlet i 0
; s5 b8 w# S4 F# i, E3 I4 Klet sum-money 0
  T' {0 [, O4 Plet credibility-money 0; H7 Q3 z, ]" s/ }( h, M% ], x
while [i < people]
! ?" j/ n  c% ~) I5 X/ ~+ r[
( M" k( l; G' K8 T5 Nset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
: l  U/ c) ?2 r! L1 t7 kset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))+ ~# `) E7 {! b$ K
set i (i + 1)3 v4 k$ f8 h. ^
]  V; S  o7 k9 B6 h% k
let k 0
8 y+ ?: }0 T  `6 E6 I7 glet new1 01 I) J( V9 L4 u: ?
while [k < people]
4 \) U1 g/ H$ A' d[
% j' W6 D5 x, l( J% w, K. Uset 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)
# `, w, p  U6 |* u9 Sset k (k + 1)* g: r( D/ P) b7 p& o
]1 F; L4 k5 P; o
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
& m: V* B$ Y$ [( l( z, ?set global-reputation-list (replace-item j global-reputation-list new)
5 `  T. x1 V3 C: c, A* U3 _5 cset j (j + 1)
: w. M& V. S. v7 g]
4 U; I  B7 g; q/ rend
6 E) O4 y0 I6 \5 L1 K
6 z( ?4 k5 Z6 J/ V
9 E1 L( r) I8 f- n5 I; t5 u6 M& O  W3 x7 o- m. H8 s; i
to get-color. Q  w) [) c7 t" P3 f6 ^
" L% g# x6 B1 Y4 ^$ \
set color blue

9 `# |/ q; e- E* nend
& s) F1 l8 T! Q& K! ?8 O: N9 Z1 `4 p, e1 k# l5 \" a
to poll-class! o) C" V: @7 _6 o, F' n5 |
end
, O8 K4 d* a- X+ \. C) ?5 K' t) G4 H9 i- Y3 X8 I6 ?/ {
to setup-plot1) R. g2 S2 V8 [' i- Q* x

) p) k# x) v* D3 g( ~( ?set-current-plot "Trends-of-Local-reputation"

  N6 R' W! o3 C5 p) G7 ~5 c- T- a* _$ s
set-plot-x-range 0 xmax
& x6 L% Y: x; M. e; S; \; ]
9 q7 E& t* z( X- R; |
set-plot-y-range 0.0 ymax

; D' P, ~$ |9 ?0 w* ]# K) yend( G" D/ M  M. A

! X" h' y7 h$ }+ V" S" D2 \, l" Cto setup-plot2
, D7 O6 F0 S8 Q/ B0 t* W2 V' K, H! v, z+ @! W
set-current-plot "Trends-of-global-reputation"

; {& R" g* m* d; D
5 {6 m$ f. q$ \, _7 xset-plot-x-range 0 xmax
3 C, F( W. c( _1 E9 o$ i
0 L* i+ N! \  X- d4 k6 F4 X
set-plot-y-range 0.0 ymax
+ E3 z9 z& h* O/ \% E5 w  S
end5 g1 U' O- g5 B% j' P

6 U3 Z" G+ {0 d; `9 X( Cto setup-plot3
( y1 O' A% x! ^3 b( ^: |8 C9 U) M2 t4 Z' _! J1 X, L
set-current-plot "Trends-of-credibility"

9 l) X$ ^" x7 j* t3 l9 x3 F* e+ x" }$ @* W! G* e
set-plot-x-range 0 xmax
& |2 _1 b% d% o' Q- e" b& d! w+ ^
6 w2 I# d$ D- e- r( t  V+ x
set-plot-y-range 0.0 ymax

# X4 k0 C0 b- l, ]" n: v! cend
& Z; A% A5 Q7 t* I
9 }: N* o" c$ Dto do-plots, d; Z# D' y' E( W3 @; q+ u
set-current-plot "Trends-of-Local-reputation"
' q. H( A! n4 C" xset-current-plot-pen "Honest service"
' k* F3 u0 H6 z! A" Z* lend
( _" ~' Q; F: t  J5 t/ }  X, Z7 t# `; J! _
2 v) u% E1 J/ Z. }2 @" w[ 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.
& v3 x$ c1 L! u" Y% A, j# C
/ O- ^" `0 g: K6 w6 A1 d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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