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楼主 |
发表于 2008-3-18 13:10:54
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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+ V$ @3 R& w; Y, u# N
globals[
! R/ W4 U1 o' D2 ixmax V5 E1 |2 H; p) G
ymax
" {# h( l( O. }! s1 E% j! ?4 qglobal-reputation-list
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* L& X5 T5 x+ b) o2 \3 P: X" I;;每一个turtle的全局声誉都存在此LIST中) m3 s8 t" u! Z4 s( ~) I
credibility-list
; @' w, B& }* P3 p: e;;每一个turtle的评价可信度
' l' L" H( x- h& I7 S. d$ yhonest-service3 d a* R# z/ v1 h
unhonest-service
& g/ p9 v W9 d2 Roscillation
: w# V/ u8 ]1 D2 S% srand-dynamic
1 S9 J2 X3 `" t' d]" T/ ^( H2 }+ c: N- l6 K! G
' A$ K, B/ l/ ~ _turtles-own[& e' k. L! f( o1 y$ _; [
trade-record-all
) Y3 h8 x+ W) D9 e- T. w* T& k0 E;;a list of lists,由trade-record-one组成
1 X) u+ n% {' s$ O: [0 n+ ]trade-record-one: H8 Y1 X9 U9 p @
;;list,trade-record-all 中的一个list,作为暂存用,记录两个turtles的交易记录7 G0 h- [4 h+ u' q
8 N! i1 I: d* H7 M, }% g: 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]]1 q5 G# ?- e5 \& M% H
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]
7 Y7 a4 q( W5 F0 S1 _- ucredibility-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
5 A8 i$ f+ C( C# v2 cneighbor-total
+ Q% x! P" p) E. M$ @' I;;记录该turtle的邻居节点的数目
# \7 u* Z- U% A2 F8 T6 G# K+ P$ strade-time8 @0 N. e2 [5 E& _( Y. V* H) c
;;当前发生交易的turtle的交易时间2 h2 ~/ N) ~# _9 x- u
appraise-give3 Z6 p$ [" Z0 `4 B9 z7 p
;;当前发生交易时给出的评价
, k& L" {. G$ x: S. T1 s! Iappraise-receive
. y- F) V8 x7 L7 U; f;;当前发生交易时收到的评价% k4 w) _0 A8 ]
appraise-time
& {. N, `7 _/ H6 g3 S9 n; S;;当前发生交易时的评价时间$ m! M/ V2 u! S' `$ s
local-reputation-now;;此次交易后相对于对方turtle的局部声誉3 y N' I5 U( M% \. P: @
trade-times-total
1 D3 B7 z/ ^2 M# ?9 F M;;与当前turtle的交易总次数
2 Q& z* D9 ~8 l" {trade-money-total3 H3 e0 n( _& T7 l: F2 C
;;与当前turtle的交易总金额
7 g) M0 y! d" @) i2 Olocal-reputation1 s' g# o x5 A+ v" p: H% K- U
global-reputation
+ Q3 M; e$ ?7 e) Scredibility
6 w9 ~$ @1 s& U$ u Y: o+ F;;评价可信度,每次交易后都需要更新+ k+ ]( |8 ]# d' u+ F: k
credibility-all
4 h- q7 V& G5 S' T6 ^;;a list of lists,由credibility-one组成。[[1对j的评价质量的评价][2对j的评价质量的评价]……[i对j的评价质量的评价]……],其中一共有people项,根据; C# P* k: f& j9 U8 }
6 B) [5 ]% b" R$ j0 Q( v;;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" _" D! B: ^3 t3 U3 ~) I( c* g: {
credibility-one
' p3 X1 \/ l2 e8 E8 U- b;;a list [i对j给1的评价的质量评价,i对j给2的评价的质量评价……],其中一共有people项& Y4 P0 Q4 d! c
global-proportion5 L. K" Z/ y- h+ q
customer; q7 ^8 {% v( N+ B$ E+ }
customer-no: O& k- p1 @0 R
trust-ok0 j. i3 X/ {- Z$ g
trade-record-one-len;;trade-record-one的长度% M. v" r0 w7 `* K0 [) F4 K
]
- x9 V0 i1 V8 y' F& W( d/ p) [
1 s7 f. T6 ?: o: R;;setup procedure" B$ O. A) h: q9 @( _( S
6 I4 `5 i. }: T" Y
to setup6 @' f# ~4 A: k. Z. S
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ca2 ]9 k* d0 N5 H+ e! j
$ x( p1 l4 m( v6 H
initialize-settings2 x3 e$ c- E4 t0 w: O" K6 _
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crt people [setup-turtles]
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reset-timer' {1 v: u) ~6 }3 k' P$ g3 K3 J
+ [4 T. i' S! G T" f/ f+ Fpoll-class
# K/ j w* P) G( f' _* S7 O3 ^; p" I8 {, U* l, [
setup-plots
: c* Y* I! _$ V: ]
% @# e* D x& }4 m' l; S0 vdo-plots/ k+ G. w) z3 {7 C$ {4 v+ T) r
end3 ?. f+ J/ }! R* Z. u% |7 p& C
, w% g7 S5 ~9 U& E3 a5 e7 X% z6 u
to initialize-settings; S9 V3 |: H* t8 J
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set global-reputation-list []
2 K; H7 Z6 B2 h$ `7 s" [4 m0 T: o" g5 c" c
set credibility-list n-values people [0.5]$ |. C: P# M- v1 D
6 @: F' T `" u' S. M- D
set honest-service 0
4 y: d: w) S9 L7 W9 `, ?6 k
) f1 D) @5 C" T! X* C! U2 Uset unhonest-service 03 v# Y+ `4 z8 T" C% X0 t
6 u2 k1 F2 |7 h9 Q! Fset oscillation 0
. ~$ d1 i8 P8 `; ^' {
5 F W9 A ^: ^1 Yset rand-dynamic 0
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2 A0 U9 f+ Z+ v# M9 N
to setup-turtles : d) i3 J7 b' w j; C$ }! q
set shape "person"0 |7 ~' v: g; U
setxy random-xcor random-ycor
7 z" O5 {" K# k: f; v$ mset trade-record-one []8 Q& s0 G. v- d2 B4 h/ Q4 V: v5 S) u \- l
4 N. h* l9 m( r9 {* M4 X% ?9 gset trade-record-all n-values people [(list (? + 1) 0 0)] + q" @% I1 t6 Q( y, l
( B7 _' A- l3 s: g) J
set trade-record-current []
8 y% Z5 `1 N! f; p$ `set credibility-receive []: `$ d# z v0 e2 D. P6 E3 X3 T
set local-reputation 0.5
9 K" x+ P) i" o& B5 ` vset neighbor-total 0" i( K" g/ |; Q! z- W& L% G
set trade-times-total 0) Z- E- a. _) V2 Q$ @) a
set trade-money-total 0
" {: C& b8 K$ t" E$ c ]5 Eset customer nobody
6 E' t; |1 P0 U; [7 i. xset credibility-all n-values people [creat-credibility]3 e+ q& D5 c* F1 K: E
set credibility n-values people [-1]
' @! d1 ]: O) @- X7 iget-color
5 I+ y* x. e5 l2 S* P4 g
% ^, g; D# \9 iend
8 }5 z6 E2 |! U9 h9 L$ r* [
8 F1 r, k/ J. |" Ato-report creat-credibility+ ~. c. B' l* Z
report n-values people [0.5]
L. V+ d5 Q4 u$ K/ ~5 F) q$ iend
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to setup-plots
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/ ~3 c* Y! |, Y. h9 A' r. mset xmax 30( g/ O8 g$ }% b. r- R& y2 ~* ?( F% L( H
% `( A' O% [ v% _set ymax 1.0! A* V0 \0 n- q. }/ W
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clear-all-plots* C, g. L8 z: a4 |) D& P! I
) g# W/ m8 a/ n+ C+ S5 vsetup-plot1
2 b. J1 ?/ T. K2 F" h& R' h' `
. @% X$ ^8 x4 D: w3 R* z2 Q6 U# ysetup-plot2
+ j8 J1 N2 [; K* T9 A" ~9 [* X- Z$ c% y6 |2 q3 V( b2 b F
setup-plot3
0 {$ u4 r# x9 ? P- Hend
+ K2 |: O) A; c$ N
9 R5 x) u& `4 g# N$ i4 k;;run time procedures2 ^2 U+ l( v8 S O# y
( A# I2 f: M) [! Q1 Q3 B7 S. Oto go8 t# r' T2 d1 i/ N7 `& D& k" o8 H1 m
7 f7 z3 V& I6 I& ^% c7 K6 Yask turtles [do-business]3 ?# x s: C' Z x
end* b1 o8 h, ~5 J* m3 `$ h# ?
7 v, C" I' M" w+ O8 R5 T. ato do-business
( M% `( R5 J5 M* O j' H Y4 `8 P( K; q7 ?+ [: k* I" s: l
! y0 k' {8 Q( M6 n8 S# c
rt random 360: N9 e) \/ z9 q
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fd 1- [: B+ c6 I6 |% J, R" Z, C1 v
. g0 {( s. E m* }' O: v) H7 zifelse(other turtles-here != nobody)[ W o1 o5 L' W. Z" b
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set customer one-of other turtles-here
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;; set [customer] of customer myself# _9 Y; [6 K, m- y5 |4 F% g5 E
4 Y4 L7 Q; C+ T, Y' @% tset [trade-record-one] of self item (([who] of customer) - 1)
! P0 X9 n7 H! K9 z, f9 m. [2 C2 u[trade-record-all]of self# {5 T) u' n) }) E4 ^: ]/ p
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self' }# ^3 {4 L$ r5 Q
- i! O2 o% G% _" b4 c, Q# Lset [trade-record-one] of customer item (([who] of self) - 1)9 t* o+ M, N3 Y( h
[trade-record-all]of customer
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) r& C8 N# Q1 G9 Cset [trade-record-one-len] of self length [trade-record-one] of self% f+ s6 c% z1 N1 I
- e# o+ m! }' W3 ~set trade-record-current( list (timer) (random money-upper-limit))
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ask self [do-trust]& ]& L0 G: U; x6 ~- Y: F
;;先求i对j的信任度
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if ([trust-ok] of self)
4 W" V# i; f6 t0 U- G& t9 t;;根据i对j的信任度来决定是否与j进行交易[
. q) [, R+ Y% F5 B: ]8 s7 xask customer [do-trust] if ([trust-ok] of customer);;这里可能会用到myself. \: E' J- l- {5 ^2 t
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# l# ~; ?% x, C4 `
" o) E" }& k7 X, O6 U4 Edo-trade
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update-credibility-ijl
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update-credibility-list
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9 Y2 {5 p8 U/ @update-global-reputation-list6 @! ^, E. r, {& S7 t3 f# Z( B( z ^
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poll-class
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get-color
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]]$ T8 V! l, F, H7 d
( k% D8 y, v+ c) z; Q4 ?: K;;如果所得的信任度满足条件,则进行交易9 d( y$ h" s5 d* A }7 I
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[0 p% X T6 |; x8 n i5 l
! H7 R, I/ l; X3 qrt random 360
: Y1 \( @, O5 x: e) D& q
8 A( E% J1 l% v) r4 }4 {8 V4 Kfd 1/ U `8 L. d3 [4 e: ?! r
! K" k( }$ K6 N0 y# I+ P* K]
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end
/ K- K' c- n/ L5 |# R! B0 R- G
/ X% ]- K$ ]1 W: M, eto do-trust
7 Q E* H1 U, [9 E8 A: m5 e) J9 s( @set trust-ok False
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( ]/ ]$ q6 ]4 i' J4 L- E: Mlet max-trade-times 0
5 G8 \3 Z/ M' R' A8 |9 k( R3 j1 hforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]& D q+ R H/ P5 J- k k
let max-trade-money 0
2 v0 ?: \5 O. U( f% q% Tforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]! r: o4 L6 x$ j8 o% S9 x5 d: _
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))$ {8 [$ E7 r, }0 ^( b3 c% {- R
/ } H- j, p7 V- `, X" R) c0 } e, G. C( T
get-global-proportion) `4 d) q) Q% \5 g
let trust-value2 s3 u9 t. P0 ]: X9 i3 X7 c0 l
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)
0 R$ D' V# ]) f zif(trust-value > trade-trust-value)/ v) l, W' i; }8 t; J3 @6 S! V; n
[set trust-ok true]
& p5 ~9 W2 e" ^) g E' w4 {6 jend
; q$ E" H$ _) d7 m5 f8 E# O3 P4 Z8 q' i) z
to get-global-proportion; u' S4 j9 _) ^' n
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
7 t( b3 x- i V( Z- G6 P[set global-proportion 0]
7 P X8 v) `# r: j( x r5 |[let i 0
8 ^) l& d3 N0 J" |6 Ulet sum-money 04 ` D- T7 F9 f R3 l# z
while[ i < people]4 O' `: t: X: q1 V) F( c
[) o' `- H1 Z- g* N# |. \4 H
if( length (item i& [+ C; T$ l5 ?, ], n' l; R
[trade-record-all] of customer) > 3 )
3 L0 \. S% |$ y- Y[: M( h& h0 o3 x" n2 a/ G
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))( ?5 L) f1 }/ K
]8 d; Z% a# j- L6 E. D1 N
]
0 C# ?3 h" S7 F2 Slet j 0! }; ~: A( u6 \! M; `9 X
let note 0
9 s4 U9 O; s6 K% q$ dwhile[ j < people]
! [1 g; m' p8 Q: F4 ]: v[# K( V$ s$ i! [; ^
if( length (item i5 }, J/ Z) P! C* i
[trade-record-all] of customer) > 3 )) _3 |: G0 D1 B2 }1 R
[; B/ D) E& ]8 b! z5 q/ @ I4 j
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)3 ]- t4 x$ l( Y. A) I; b
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
* o+ Q5 r4 {0 m5 ~6 @[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]/ R: c/ }7 y. P3 k+ Z7 B; x
]2 @1 C0 i$ p! C% W' m
]
( \5 s3 z+ E2 c7 z* cset global-proportion note5 W4 \9 f% @* _4 |& b$ w5 c
]. z% l' d) N) ^) f1 ?8 E
end: H P Y( E" o" h! L
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to do-trade e3 r/ @, a/ `/ |8 I
;;这个过程实际上是给双方作出评价的过程5 c* y( m {$ b8 _# t
set trade-record-current lput( random-float 1) trade-record-current ;;本turtle 得到的评价
) E% x( w& `4 _; ~6 B2 M5 G% I0 Qset trade-record-current lput( random-float 1) trade-record-current ;;本turtle 给出的评价
# y |' s8 I0 q0 R Mset trade-record-current lput(timer) trade-record-current
! L5 k& Q& v- A;;评价时间
, l4 U: r% A! c# _: Z, Vask myself [
4 B, a; \$ N$ T2 r& jupdate-local-reputation
& h& O& _- s- s& ]set trade-record-current lput([local-reputation] of myself) trade-record-current7 l5 D" d$ W; I8 \1 R0 u8 T
]
t, T0 j+ w4 @( Q; D s2 dset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
3 c! D7 r7 A/ Q6 p5 C2 L;;将此次交易的记录加入到trade-record-one中
7 I m* n6 ~8 Nset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
8 k4 p' ?+ t# C6 g7 Y, glet note (item 2 trade-record-current )
$ [1 i. i- i1 e3 {, I& F* {8 ^set trade-record-current" r0 E* J) s5 p% A
(replace-item 2 trade-record-current (item 3 trade-record-current))
7 k% F" v9 y5 x' h+ Tset trade-record-current
4 @3 `7 p' {$ f4 @- f5 l(replace-item 3 trade-record-current note)2 H2 q2 Z! q1 [# P0 ?" t8 b
7 t* l& x0 `; B
" d2 l; I$ G7 s r! J9 p' `: {
ask customer [
# l# u# B5 e) v. rupdate-local-reputation
% k) o$ F2 {5 w: v; ]set trade-record-current
' Y; p$ |* s* d {, Q(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer)) 7 r3 ?0 L- _' k- H/ [
]
$ U7 Y4 T7 B- g! N+ X
4 a) w9 M* s; K
$ H) B! j& a& F& Uset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer0 v' l1 x6 r& [: U( N) ]- m
a0 B6 y6 t( f9 R: Vset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
7 k. {, R# }; e6 };;将此次交易的记录加入到customer的trade-record-all中
! N: ]/ P1 m+ R) t2 p7 }0 nend
" n% A& Y# L S' Z
w; p5 L8 J( M7 U* cto update-local-reputation
# V0 O/ P6 R& Z! nset [trade-record-one-len] of myself length [trade-record-one] of myself% u$ \. n: z& n4 F
3 r9 U: N% w; V
1 G2 V U7 }5 U6 L6 f;;if [trade-record-one-len] of myself > 3 & V2 P7 [1 E! L
update-neighbor-total, z1 `8 C- q( l ^) e7 Y
;;更新邻居节点的数目,在此进行
, ?& P7 E+ S+ klet i 36 V0 M( i9 Y# P; X
let sum-time 0
3 N9 h5 R* q5 u: z! Gwhile[i < [trade-record-one-len] of myself]/ T2 ^# I# D5 ]7 J
[
; ]6 p, N7 a& a' w+ d; Fset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
Q, W0 g9 K9 q3 `9 [/ v; Jset i
1 n# u& Z! v% ~: g( i + 1)! P7 f+ T& g! @& w9 w' y) s0 I. x
]
: ?9 P* ~( E1 Y8 M) U; ulet j 3
; ^: N& n6 z3 q& Olet sum-money 0
5 r: _: Z D6 @6 Swhile[j < [trade-record-one-len] of myself]
7 n2 P3 ]& S+ I[. {- e3 g6 _$ T; Q) D
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)
$ b& |( k( l& e5 t) qset j
" }/ O6 N2 d& \: e9 c8 b& a( j + 1)! }$ p- c' R& j6 ~8 L5 V, e. s
]* D: i: S; ~( Q& ~. x' @2 ]
let k 3
) @3 L. ~9 D. x0 d$ I4 W2 a" Nlet power 0
% n, |- D4 M* }( o Y& o$ v: Dlet local 0! ?# Y1 e( O8 j- O' i7 S
while [k <[trade-record-one-len] of myself]
' f8 d# _- n% Y4 B- D0 M9 K[
7 Y- o: t8 H( H2 z7 e8 [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) % n0 G; C. v$ @" |" U
set k (k + 1)
) e- j+ M& c, A]
4 x9 L* w$ }" W$ b: iset [local-reputation] of myself (local)1 _% }" j' u+ i+ ~5 r" n. A" w- D
end: q8 J' b+ Z M# L+ s
' Z8 v' B" m* M& ^3 G7 E7 i. D+ qto update-neighbor-total
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if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
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/ g! @. ]% U; I8 y$ r3 O- H: vend
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to update-credibility-ijl
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;;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 q4 m8 T2 }* B: q% J( L/ d0 z- l
let l 0$ D+ d7 U5 e w! U
while[ l < people ]
1 u1 z+ i2 F; d7 G;;对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( @+ x2 C3 f( e, O1 x9 s
[: X* ` ^9 V! m8 O, `
let trade-record-one-j-l-len length item l ([trade-record-all] of customer), `, L y( C0 a3 D* a6 [
if (trade-record-one-j-l-len > 3)
# u; {( a( j# j4 k7 J[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l的trade-record-one; V% ^3 E% t; i0 x% \
let i 3% d n1 v5 [1 p" s
let sum-time 08 P: g/ A$ Q% {
while[i < trade-record-one-len]
* o2 f& J4 c0 C% v- _3 `[% M L" s% K6 x
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
O r! s1 |& u6 H2 H; wset i& J9 ?8 M1 m- i; p! a
( i + 1)+ l& [. A' P' S- g4 k7 R, l0 a& L
]# y. C3 n5 p' E
let credibility-i-j-l 0
8 U5 z2 C Z5 D9 U' @- U) S+ L;;i评价(j对jl的评价)9 [) }0 N1 v! K/ n# k( B
let j 31 n: y- |' h+ X7 f
let k 4
+ ]# b3 o# |" wwhile[j < trade-record-one-len]7 v9 E' I! b# V, S: v4 }2 X
[
/ _$ t1 [# F) r/ F2 mwhile [((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i第k次给l评价的这一时刻,l相对于j的局部声誉
/ X' d k4 \1 G! v* E 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)
9 E7 `, r+ }: Q7 i% Bset j
1 f$ c2 v' T/ U( j + 1)
4 L7 ?7 @$ C" l0 M# ]" V- []) y( y) \5 j6 i/ w$ E: V
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 ))- \2 B* h! B% T' N
! }0 {$ D3 L c; Q7 [5 ?8 p' V u
@1 E. T5 L8 ^8 R* c
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))) ?6 G9 j) N: c8 D3 H, @+ r/ q
;;及时更新i对l的评价质量的评价8 t0 q# S3 X v' N4 v6 [
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
( r: E/ ]: J$ c/ u% |set l (l + 1): s; [6 J9 r9 X" b9 w6 b' g
]
5 L% r+ J! ~3 N# b) Jend
- v, \ f. o( J8 ?+ _/ v4 W) ?# G' r
to update-credibility-list
8 X1 M( U: ?! mlet i 0
( z9 g# L0 X( X1 n8 A- }, u$ Dwhile[i < people]& i0 `& s1 X$ E
[
4 q! c, O7 |) s* ~+ @let j 0
9 m- O" l/ U5 x! ?9 klet note 0# w' Y" q. e7 o- C: ^
let k 0
" _& V0 ?+ x- e/ {/ E;;计作出过评价的邻居节点的数目
- Z5 | k% V. Q0 rwhile[j < people]
6 n- }% B/ X) g+ P y[: Q* [ D5 C, c3 I8 j; b- m0 U
if (item j( [credibility] of turtle (i + 1)) != -1)% R+ V5 j# h: ]% d4 c" l
;;判断是否给本turtle的评价质量做出过评价的节点 L( ~4 Q* @" r, m' x- z
[set note (note + item j ([credibility]of turtle (i + 1)))# h/ e7 d- o+ E+ ^& c: u1 S
;;*(exp (-(people - 2)))/(people - 2))]
2 D, M8 z' _8 D l- |% C! n) ~+ u7 Yset k (k + 1)4 \8 ~0 W3 I! s( B! K! K, M/ V1 d# M
]! o0 T2 d" B3 Z) Z8 [; }
set j (j + 1)% r7 l* s) p- h2 `% P( R
]- S$ g/ S2 a" k! u1 ^7 \; E- l% ]6 v
set note (note *(exp (- (1 / k)))/ k)) v0 [4 C( L$ P+ B, s
set credibility-list (replace-item i credibility-list note)& Z5 Q2 I+ B% S8 c
set i (i + 1)
; S) H# X* A5 l- _; o) {7 M: R]1 s5 e: I/ y0 j$ M! M4 |, |) r* S8 Y
end, p) F& B# V2 r. ?
( V: {0 t6 {# ?3 n: }3 h6 sto update-global-reputation-list
; D0 D. Q3 g9 elet j 0/ P6 F" ?; R2 S" a8 g% T/ M
while[j < people]( Q7 m# i8 O8 G
[: R M% z* \. h& A8 r
let new 0
( @3 x1 _. G; _$ e7 v# i! B3 p;;暂存新的一个全局声誉
5 j! e( m$ C) S6 l2 ?, Plet i 0
9 @5 g0 b" a1 `% jlet sum-money 0" T4 d$ k# G% ^' w; s: i
let credibility-money 0# p5 s) T$ y' S: r' r
while [i < people]
9 \. a2 O. l3 Q* H- x[# ~+ m5 H0 @0 A
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))$ L( d' W( f H( x$ r, G
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
' V6 @5 ?% R0 n2 O" Dset i (i + 1)
+ P2 g7 {- D. E+ i& @% @& X1 W]' H! g2 T; @, Q0 M( K: Z
let k 0
* R0 y% @; [- \4 T& [( U6 blet new1 04 A; F. H; D- L
while [k < people], m! U! {5 d) r% @2 z: ~
[
% H3 b* J! d& C2 t! K& xset 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)7 x- N4 s# ?; B; w3 l
set k (k + 1)
0 M3 s" O0 q# O" }8 ~: d8 Z2 V3 e]
/ ^7 \# W7 e hset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
8 Z+ x7 C5 z0 \& lset global-reputation-list (replace-item j global-reputation-list new)- h: S9 P- l; F% r( A: v$ _; K
set j (j + 1)
- V( K9 `7 d: i]
7 t) q4 q7 M9 k- y) j- N, X+ G# D3 rend- }. z+ |" ~" O' c( U
. M- L' A \4 `* \2 j6 Y, t
1 ?+ l, T. I2 q& R( K3 L) R) A' d' L) Z, |" t3 T( u! x
to get-color* H. |: Y/ Z) G
% {7 T# _8 w& O, e; N, H
set color blue
- f# {. o0 n( N$ i& w! `/ Xend
: ]/ h$ T' r) Y2 `* e6 y0 l3 t, b- @- q' }! ^ U8 j
to poll-class6 D; `9 k9 z; @
end6 t, o7 f0 Q: {: F$ {; l
5 q1 c( O) n, v
to setup-plot15 E. c, T0 h( Q7 g, X, h! Y
' S* j1 W9 {' O1 eset-current-plot "Trends-of-Local-reputation"
# L; O9 C: q. i+ p
1 L. p! g/ ?- E, ]8 g, v) }set-plot-x-range 0 xmax4 B* h5 p2 l$ }
3 }' T2 j9 f3 V! D o) y
set-plot-y-range 0.0 ymax
5 \' h: C+ a. V9 P: jend9 M9 I. f+ G! w
. I2 b+ f, R$ _& Y% p7 O+ v# Ito setup-plot2
. ~, c3 q1 g* R7 Y1 L+ Z6 h
1 ?0 L/ v: O2 [; T. Q% n3 ?set-current-plot "Trends-of-global-reputation"- K- Y5 ^7 ~3 s) m. u
9 i! ?$ i0 F- b% q; i4 Aset-plot-x-range 0 xmax) h$ ]) Q( O# X
3 n0 h- l$ |" yset-plot-y-range 0.0 ymax5 o8 P2 C& ?. R |9 N; ~2 S+ h
end
" b. h" x( J, }% W/ T
, i! \/ J* @" f" g5 J* Mto setup-plot3& ]' ^# n" N0 m: y
; {/ m* r9 h- E* hset-current-plot "Trends-of-credibility"1 Y6 B/ M' s- u1 L3 w
$ b+ D! O J0 ?, [7 B- E/ @+ yset-plot-x-range 0 xmax
. Y' b# O. |& b- X
+ |9 C, `$ o% c8 [. \$ a( jset-plot-y-range 0.0 ymax H$ B% {/ {2 u
end
. C. H( p8 t. z4 F
: v' W. W* W) W* N# ?to do-plots
) {8 S+ q' Z' V' T2 g5 {6 Rset-current-plot "Trends-of-Local-reputation"% ?4 H) y. R4 {& k A) T2 `
set-current-plot-pen "Honest service"
* ^. ~) }; C bend
2 q }3 D# B# H L/ _* Z, D0 U9 c' ?! Q+ d9 e( r- {" D4 s6 q# g
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ] |
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