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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
1 ]! c0 n$ @: k" S# S# mglobals[
/ u0 e% v+ k: F, ^9 l9 g/ X/ uxmax5 y, P6 Y8 t+ V, R
ymax+ g2 [& D# t- C v* p
global-reputation-list: Y' D: C* t' S
5 X/ s' j/ o) N: A
;;每一个turtle的全局声誉都存在此LIST中
! x) w! N9 l" k3 W/ wcredibility-list3 I( l8 ?1 N$ k) T
;;每一个turtle的评价可信度
- A/ O/ |9 W M3 [7 `5 ?8 uhonest-service, ]6 H0 g2 a0 a: |1 Z& y0 c
unhonest-service U d# h0 v9 Y' W+ J. k* ]5 V
oscillation0 |* W/ i' g* h, _9 U. F2 r+ i
rand-dynamic% c5 a5 c# G, [8 ]1 q
]
( b/ B# F5 u; d6 p8 R$ Z
8 n4 s5 X1 `$ L* @8 _: [turtles-own[# B' }2 M" m+ T: K1 R
trade-record-all
0 f( L8 n4 c$ C4 s6 g% T0 z; P;;a list of lists,由trade-record-one组成. j, f+ N r' K! o, a
trade-record-one
) e2 j* K" I9 g, l, n;;list,trade-record-all 中的一个list,作为暂存用,记录两个turtles的交易记录$ [$ C) a. K0 l- y
' R: y- _; [3 ^5 x4 A. \3 v1 M
;;[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]]7 D/ }' Z% I9 i% u5 y
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], n& W/ x1 p5 ?1 X0 v5 g7 ^$ r
credibility-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
' p: e7 C9 v. s& K" b- bneighbor-total; Y; d6 x: {8 n# m# ?. X
;;记录该turtle的邻居节点的数目# F- y- d0 J$ I
trade-time
7 \' \0 S4 H2 N! x;;当前发生交易的turtle的交易时间' Q4 a' w! P9 Z O7 V
appraise-give: [' L; _1 k. W2 y( q: x
;;当前发生交易时给出的评价; v: x! y, T( h. S2 l# R# T
appraise-receive5 R9 k- {0 }" y; e9 ^
;;当前发生交易时收到的评价$ W x/ E# x2 [) M
appraise-time O; R" [. F6 Q K d) Z1 n( v6 h/ ~+ o
;;当前发生交易时的评价时间' _( J4 G G1 o
local-reputation-now;;此次交易后相对于对方turtle的局部声誉5 I/ k3 G4 Q: \ |+ ]! R7 P$ L, X
trade-times-total
: q2 b8 g4 I7 a" H$ q& B;;与当前turtle的交易总次数1 s/ z7 p. Q1 b! x
trade-money-total% L! z: W6 R6 @. z& t; P2 O. ~" n! `
;;与当前turtle的交易总金额
' ^. C4 L0 H9 h/ W! r8 |local-reputation
+ _* g# f$ Q6 Mglobal-reputation
9 s1 n2 J" m) j) k) v' h6 lcredibility
% _; r# d: o/ X1 v6 ?* D# {6 d;;评价可信度,每次交易后都需要更新$ |0 C: m" h2 U1 ]4 j
credibility-all
/ v' ]; }5 q/ B+ i R;;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1 k4 }5 Z; u7 m. o" R1 ?
) z z$ Z$ j; K7 P( f; p% C( M;;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0.55 V0 W* }% r, Y7 L: V
credibility-one
; z q) k6 \- f;;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
9 e3 P0 y! V5 N% O9 \, }; zglobal-proportion
: l" D( Q4 d7 G/ ~3 `# b, D8 u- O1 lcustomer
+ `$ x7 Q, f. q# n- [; pcustomer-no
s* ~6 A4 v) jtrust-ok
$ {' |+ i6 s/ y: \& ?6 jtrade-record-one-len;;trade-record-one的长度# D/ `" q1 {$ `7 `7 S' a
]
- ]+ L! s% v2 U7 j* A/ x# x5 _8 e4 O0 ^" F" u
;;setup procedure
6 j4 h+ C" y+ ^6 V5 w$ }# n( s! X' T" ~/ Z/ V
to setup
# e0 a' J& W% c# n! b" e' j1 J# Z8 n5 w2 {3 [# A; n- }
ca3 v( m$ J$ K8 `- ?/ k" ]$ I
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initialize-settings
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# {: _4 l0 U) Zcrt people [setup-turtles]. n5 v+ @& [* ?/ C; Q
$ o9 Z0 V1 {# a' O$ p3 \; b
reset-timer% I( D6 q5 k5 L# J, J
, b4 _7 l3 h/ A b/ `4 r( e3 N
poll-class
) k2 u q* s5 A) p* @ s' ?" @; Q# r% y* @! L! O
setup-plots
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do-plots# o9 V, Q$ F5 x
end3 v" i6 ]/ W$ o. w4 L% f0 x
- c' [' e6 R9 \7 H, v3 Yto initialize-settings9 p. C! C+ l3 n) A9 _8 A7 g
, H% {* B, B0 D" O0 Bset global-reputation-list []2 l3 \" E3 m6 d. u
! {5 R N: q2 d; P# D! j! {+ sset credibility-list n-values people [0.5]% z* Y- {9 s2 `: `! E3 |
$ H9 R: K/ F8 ?4 k8 `
set honest-service 0
c, U/ o: N% r7 f8 ]1 p; R) H+ K+ r5 T. P( P( v& t
set unhonest-service 03 `7 x6 _/ h8 M( C- x' ]7 I+ S
0 c' ~9 k# u/ t& l5 Y; pset oscillation 0
4 ]3 y* A' V1 {1 Y, B8 v' E
$ y! P# e% m' J6 G+ nset rand-dynamic 0
7 L4 D z1 c& ]end
. j6 V# H) H: [0 `
* y& z6 Y! f9 Qto setup-turtles
' @' e; p( F& V4 [8 d+ Aset shape "person"7 \+ ]! x$ P" |
setxy random-xcor random-ycor3 [5 x( f/ R! [6 B+ m
set trade-record-one []1 p- g. c7 k$ R$ V
! x1 [3 {% s0 C' _9 A$ V* kset trade-record-all n-values people [(list (? + 1) 0 0)]
. z. f+ e" ?9 E4 a9 H8 o9 d9 t$ h
$ m" @/ B9 \) ~set trade-record-current []+ T; R* V/ _5 q) h1 d
set credibility-receive [] _* p. h9 _/ J# i/ X @, v9 s2 P
set local-reputation 0.5
# t* ^: s/ G0 N% w8 Jset neighbor-total 0
; Z, p: P/ [3 b9 V5 e( {+ cset trade-times-total 0' B+ `/ s1 i6 B# A5 C7 W8 R
set trade-money-total 0
7 j/ |( u' t5 |( Zset customer nobody+ Q# ~. J+ Z* [6 ~9 B
set credibility-all n-values people [creat-credibility]6 ?: E+ d9 n1 E6 \ p- W
set credibility n-values people [-1]6 \/ v* t1 ?. @ B7 P7 ^
get-color
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end$ [2 G2 {6 t" T3 g
# ?' D$ O1 D" k$ J
to-report creat-credibility
0 D+ ]: f9 D' C5 M1 L( Q- `4 ]report n-values people [0.5]
& q! H7 H9 v. e2 p* P! S" Mend
9 c# b9 h: H0 M
( P8 e$ q2 J+ z) i- `to setup-plots; U- ]$ b& e: H* c
* O; n4 V: Z. N1 A7 G0 b
set xmax 30
: o9 P! f& z3 c# R7 u2 F
' F' R W. q1 Qset ymax 1.0
2 C2 Y% @+ Z) }6 a7 [7 z" A
; g) C2 F/ ?$ j: H# \) W+ |clear-all-plots
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! I" t6 Q2 h0 s; f! ~setup-plot1
l+ W+ t! i O9 d3 z8 n4 h( Z" O) U9 K# m' C- ^0 ]; q
setup-plot2& |4 u0 R! t, D" b
5 }8 X6 v8 a. ]% Csetup-plot3
' m" F' ?4 d0 L, jend& x' z% |' ]5 N) v: H
: g- Q9 D) D& e+ B2 |6 D% k- s3 b;;run time procedures1 S( i4 b; @7 v& r
' ~8 Q+ A) }9 q! L3 H2 Fto go+ P0 m' t/ Q& s2 O. R. N1 L8 r* g
, D; L7 c" ?: C7 u$ N3 \, Y1 j
ask turtles [do-business]
2 a) J- H( o% O& s" ]& `end
+ q, Q, B9 O( B
. s0 q Y7 ^* m5 ?/ F0 t0 o8 @to do-business
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: l. t1 S$ ~' H9 @ k+ x" j# p3 ?& W1 Z9 q9 d
rt random 3605 l" f4 v8 i9 J: j( w1 X; E0 \
8 K" W" i. U2 T6 a0 Z( Jfd 1! q+ a% j3 M8 W: A: @7 p# n
4 P q) E* M. D2 i% v( j* }3 @ifelse(other turtles-here != nobody)[7 i$ c1 t2 N2 S5 Q
2 i% T4 ]; A" r- e# B, K \
set customer one-of other turtles-here
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;; set [customer] of customer myself V# H7 G u% W- }8 S& \$ `
4 G& g; R6 i9 W& D! Hset [trade-record-one] of self item (([who] of customer) - 1)
" n) L% D' z7 u[trade-record-all]of self
^1 w: |- T- u# Q. J; ^8 L7 |;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
' l4 g* Q- x, E9 ^
& ]9 j1 _- B' ^! s9 h% dset [trade-record-one] of customer item (([who] of self) - 1)
) V1 ~3 p0 O: o[trade-record-all]of customer: H* W' q4 V4 x& r
: B3 r# o1 P. I) u0 l' ?1 [. `set [trade-record-one-len] of self length [trade-record-one] of self5 h( [. V e. m% ]2 Q* b) J# U3 o0 T' L
$ O3 c- u9 [; Y# X Rset trade-record-current( list (timer) (random money-upper-limit))/ h) I5 g9 h% v7 L' F
4 H+ d. D! a: ~- S, q' p, \
ask self [do-trust]! J. {0 A! u+ X; h1 g: m7 q) N9 V
;;先求i对j的信任度
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if ([trust-ok] of self)
; U x$ I0 w/ I, v8 G7 \;;根据i对j的信任度来决定是否与j进行交易[
$ h# s1 u, V2 @; M1 w: {6 j/ Rask customer [do-trust] if ([trust-ok] of customer);;这里可能会用到myself' }: g+ j D9 c, b: N7 F
5 D: {" d/ x/ s& s- j) D
[
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do-trade
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update-credibility-ijl
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2 f" ~# r7 e9 b. Z$ b- Cupdate-credibility-list( O* |, Y" t2 R7 v5 y# ?
2 t3 _: ~. p: V( U p$ l
# \. h4 E2 K1 D$ l& }) W3 ]! `update-global-reputation-list3 G" T T* g1 J- L8 y
, Z. f3 m. ~$ a0 c: n7 a+ t- ypoll-class; [( J# ?" G# H: f# m: p, g) N
' w; ?5 T6 ?! c3 S. c Q% D% b/ B
get-color
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]]
7 P0 u. j* U& j3 S; D) r1 e/ @ b: Y, g
;;如果所得的信任度满足条件,则进行交易
' h# [, U7 [& } e9 x) y1 z) d1 }
_* j5 x* c1 m[
0 E: M. g" i5 {) I4 l
- _. q- A2 ~; D- @4 b% W0 Urt random 360
/ k' ~5 Z; V `, c2 o* I" Y A) O3 V
7 D/ k, i- r$ Yfd 1+ k9 s* R, o; k4 q; S6 }3 q
& e# U d; N. S' m8 S8 i2 P( w]
/ h4 w9 [4 _6 G$ j) H$ q
/ V2 x; y6 \8 m8 ~end7 c8 }2 i' W5 q0 X, U) [
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to do-trust 8 d) m8 ~8 P( A) y6 z7 d6 X
set trust-ok False1 @& o+ S; X' o8 n( W
' Z7 @: J3 U( y* F ^+ z1 y" u# ~5 S( D' J1 ^ F3 S
let max-trade-times 0
; ]. j+ \- N0 h. S* hforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
8 g6 a: P& _+ W7 Blet max-trade-money 0
" d# F3 f0 {; k& b2 ~foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
+ A/ j' V) J/ V% ~: P# y! r4 Wlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))1 o; L4 g8 k3 h8 Y2 O s) Z
# ]4 G7 J1 c s* _3 t6 C
1 y7 c" @5 A' ?3 c! u( c" Oget-global-proportion
# M: L1 M1 h: Clet trust-value/ B0 y* ]5 t4 a$ O; x- B/ I
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)
% h0 j- u. A2 F' }; @' q6 fif(trust-value > trade-trust-value)
% \9 g j' F/ t% u[set trust-ok true] C3 @1 { Q. P( ]4 x
end
0 `6 J% q! O* _' p! x
6 f( _( N4 D D2 V' y% c0 x) @* d7 Nto get-global-proportion4 B8 {% s8 w$ ]5 r# O
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
# D1 H$ O: U, j0 r8 N) ?* D" j[set global-proportion 0]
! S% D/ Q( c) \; y/ v! y; j- I[let i 0
v9 W O5 D0 ^! `let sum-money 0
2 j7 A. A8 P- O( D* R- Bwhile[ i < people]' c/ ?$ t8 A% G& y3 l
[
2 R/ ]6 Q8 n) T0 Q4 d$ O1 jif( length (item i( G' W) C# m, [2 u0 g3 y9 k# A! j, l
[trade-record-all] of customer) > 3 )8 d% B# W& z# |) p
[6 f: \8 P; T" [# a! `
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
+ S. {0 N7 r% d$ }! {]1 [1 |3 F2 B, j
]* m+ V0 g. n0 [! m
let j 0
" a. G* i+ O2 J; k" R! w: Flet note 0) B! L* L5 j' U) s/ x' Q
while[ j < people]
" J& v6 N* R- Z" z8 _7 G$ R[
' U3 ?: n; F; V8 q9 L$ \if( length (item i
2 u% |7 i& Z7 W5 C& E[trade-record-all] of customer) > 3 ). X, m, ^3 P; Z
[ r1 c, ?$ m. \
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1): A" |4 W' @5 Q. c- p2 i
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
2 B! |( A' G4 |' L[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
- K; w0 h2 b6 Z! j5 E]. H3 a% ]' A4 j0 L& u) C* \+ A
]
5 ?# Q, J& g6 Z6 D8 u! ~9 qset global-proportion note( x5 ?3 P. V7 A. ~4 R8 F* E
]7 K$ c: k7 x8 M8 B* o. G
end
" D- Y% K" l, I- J- `" u1 L# ]/ F
3 V# g& j/ y4 qto do-trade
4 }+ F9 q3 H' A: M9 c" t;;这个过程实际上是给双方作出评价的过程: D9 ]3 n8 I. y4 u# _/ \& J$ H/ }
set trade-record-current lput( random-float 1) trade-record-current ;;本turtle 得到的评价
3 C: w9 [4 K7 h) V" kset trade-record-current lput( random-float 1) trade-record-current ;;本turtle 给出的评价5 [1 r- s7 J7 V1 B
set trade-record-current lput(timer) trade-record-current9 H) N7 r" d9 O& n: |( N
;;评价时间/ w- R* z5 d' B* y& b9 z+ C$ Y3 J
ask myself [* d2 e$ q. N% P4 O/ R5 \
update-local-reputation* A4 f4 ^! \; O) I1 B
set trade-record-current lput([local-reputation] of myself) trade-record-current$ P3 G' M9 C$ B4 U
]
- L, z1 e/ A! M: O; z5 d9 Kset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself9 r3 N4 O+ h P
;;将此次交易的记录加入到trade-record-one中
$ K4 `2 W1 B- `/ Lset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)4 H& |. n3 ]: R' ^' u' x( f
let note (item 2 trade-record-current )
9 X# T3 A$ M6 O" e- D7 I5 g, `2 p' i$ ?set trade-record-current
# Y- e$ I, M& e8 f(replace-item 2 trade-record-current (item 3 trade-record-current))3 N, Q B; o1 \' s9 f* _
set trade-record-current
7 X, d5 x+ S( K8 V* o2 G( C3 d(replace-item 3 trade-record-current note)
" Q& v; F& [5 r2 f: f, o1 |
- A. p# P+ ^4 v. C" A& j% N X
3 K7 P' z$ _! I# t' gask customer [0 a% k; F- f7 k
update-local-reputation& Z3 ~( M; [1 b1 o; I5 Z6 Y" m
set trade-record-current4 a5 b3 ?: ^0 z& B
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
3 _. o7 T" \: W* []0 | r6 w( i7 M
$ s, o0 b" B. b1 o- U) e" i
0 ~4 x S* K9 Hset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer& |' I R9 E' U
+ O B H8 g! I, c9 \set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
$ ?- J% n* h' j* {; k( y- N;;将此次交易的记录加入到customer的trade-record-all中
7 ?3 j7 v2 |3 P2 @: D5 b& u& V H, wend
, V4 N$ C4 ?% _7 R
S& v# H* v* m/ }* y1 kto update-local-reputation7 Q) D+ |: A7 @& ]9 E7 N" N9 e* g( n
set [trade-record-one-len] of myself length [trade-record-one] of myself
$ o7 g7 R9 [ D& v* j5 {/ b, a# o' I& }! R- D' k
; {1 z0 e4 f7 @( }
;;if [trade-record-one-len] of myself > 3 $ K: g0 M$ \8 U# p6 }8 ]: k
update-neighbor-total1 a+ q1 {+ @- o
;;更新邻居节点的数目,在此进行
6 c+ o4 ~0 I% z( z! d& Glet i 3
3 \1 e- ~; {! B& m' _let sum-time 0
0 a$ W: g- [0 f6 p6 j+ U( P4 I! Awhile[i < [trade-record-one-len] of myself]! j2 [- T4 O, p" M- |
[
4 h5 k( e+ z1 `/ ^5 Bset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ) }% r, {* M3 R9 R9 a) e( ]
set i2 i& [6 s; o( i, B6 X
( i + 1)7 ?" B6 f5 H4 g/ B `
]" }: ]1 E6 `% F2 ]
let j 3
2 Y8 F( H2 G. |4 x! Y& h" `let sum-money 04 f$ d. a* _( G7 Q' H
while[j < [trade-record-one-len] of myself]6 d& I: A( `( U2 O D) Z
[
% u! c: ]) l$ C y/ E3 `7 D! p" Yset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
5 R* v4 ?! M2 nset j4 a7 R- s0 {% S# Q. [
( j + 1)+ h: x: b6 k2 q# y
]0 O" T& r- g1 s
let k 3
9 x: N/ E5 d! x$ @let power 0
7 s) F) s+ H* G6 Tlet local 0
+ z4 r1 }& o7 b, {' I- Z2 L% i/ gwhile [k <[trade-record-one-len] of myself]& I( {: n3 M; {: e) L6 S
[
- H6 x, p& u |2 l) q; q/ p& `2 L+ vset 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)
P- t0 ?( @9 k$ [ Y8 \, ?) O/ Zset k (k + 1)
6 U8 l# `' C5 U& u2 V]
% W! w1 d$ j4 @set [local-reputation] of myself (local)
! h$ m. L, e" m4 {$ L6 Q/ Pend6 V; B0 k- X& U8 Z" |! W
* ^* s1 P* j6 h$ L- h2 ~+ ?
to update-neighbor-total3 ]) ~- Q3 f% }6 H0 ^2 a6 |
; Z# _, _( R0 j2 i" b' e* Aif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
: c, B2 h& A. g1 k: Q Z) R8 x
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" n% s# U7 r) g' \; Send; R' R8 D, A+ ^1 O
6 `) C" X. c* W2 ]2 Y% j4 V( U$ i) A
to update-credibility-ijl ( e% a& e+ W5 ^' b4 [( j% |7 V
8 F8 _; G6 D4 k* `1 [/ M;;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。
0 l7 C* Y. y3 ]9 ?% ?) \5 ~let l 0
+ p1 G3 U) \+ h1 U0 P9 ~$ z) }while[ l < people ]
$ Q1 M3 G) h$ J! h;;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
& g$ V7 Z# D5 F' D+ f[
6 v- z* \8 E3 K5 F+ v! `5 clet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
+ ^6 d6 c0 K/ L4 Z1 o6 h; j$ qif (trade-record-one-j-l-len > 3)
) l# N4 \- G+ v4 q9 z0 l) 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
4 D) A7 {; _! ]" ~; Qlet i 36 F5 i T$ l$ G* w: k X" L- g
let sum-time 0& p* m. I& t# A8 ^. L
while[i < trade-record-one-len]2 `. w" g6 Z0 \6 h) |& q$ }7 H& b3 ]
[
$ L% l# ?8 x$ h3 P x) Q' kset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
* P9 s8 g, p) m2 `set i0 s0 N. V4 ?4 y6 l( {
( i + 1)
3 I* f& S/ |# o]2 k: E- O6 ?% y; O
let credibility-i-j-l 0& Q5 {' n: S8 ^4 l: Y
;;i评价(j对jl的评价)
7 }: a: i: Q2 `" k0 C; q6 @ v- {let j 3
1 F3 R. B' z9 D9 X: [let k 4& ]7 |& ^6 w! l' ]; u" S, |7 Q
while[j < trade-record-one-len] O9 v) k0 Z9 o% ?4 I$ i# H
[
z: c3 a$ ~. j4 G* ?3 kwhile [((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' w9 o5 ]0 B# j, v! T6 l, ^* D# U$ u+ C
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)
( L) Z' T& Q1 Q4 c8 U6 t4 _7 u0 N/ vset j
+ Y' l& S- r! I$ @( j + 1)
k+ v; ?+ A/ S4 ]( J+ g! e$ A]0 N9 l+ Q$ |& 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 ))
- f+ ]5 U7 w/ g3 p
8 F1 {9 ]) ^! P! u$ o! e
/ n1 u" N, J: D0 j$ Hlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))! x; f' q+ K$ c7 R+ _
;;及时更新i对l的评价质量的评价/ X1 ^+ Z* O+ W8 ]! n2 v
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
4 M; |; J6 L3 K! W" p$ ^" hset l (l + 1)& {8 W7 x' y" L. L7 Y" Q
]! ]+ `6 m* j. Q5 P6 L) }2 z
end
x- V* o6 c I4 x; K8 Y# T
% N0 l* k3 `: B- q9 bto update-credibility-list7 `0 ]# V7 u0 a+ |" M' C+ @
let i 0
9 b# ]3 T, ^( i- E1 p8 s8 A8 Uwhile[i < people]
6 x$ o2 c: e7 Z/ h% d1 e1 z[
! \9 K+ }4 X. v. S6 H* q% c( Vlet j 0
' T' y+ T: A8 }9 l) \ p4 Elet note 0
2 x& i* c7 M6 s1 nlet k 08 o9 d2 }1 z9 `0 d6 `
;;计作出过评价的邻居节点的数目
9 L! @! @( H# N U9 \) Y, [while[j < people]
- ^: q9 D* Q0 o, f' c8 W+ G[
: {0 X7 Z, y; N- {1 v/ Dif (item j( [credibility] of turtle (i + 1)) != -1)# d' k' m. D$ s* {
;;判断是否给本turtle的评价质量做出过评价的节点
' z5 v4 E% O; Q: B[set note (note + item j ([credibility]of turtle (i + 1)))- I& d1 j/ m3 f% {
;;*(exp (-(people - 2)))/(people - 2))], r+ [8 N1 R4 s0 o9 w/ `
set k (k + 1)
' r6 R( v( W9 R( u; ^2 _, ]: W* h/ d]9 q( b# Y0 q% R7 q. b1 n5 g
set j (j + 1)& R4 D% @4 i m- j9 y
] k& r' P4 q7 L2 T3 U
set note (note *(exp (- (1 / k)))/ k)3 \& e' Y9 P& I0 [
set credibility-list (replace-item i credibility-list note)+ n4 u4 k( m0 y7 h# o! k8 G- n
set i (i + 1); \# F# ^! ?% m8 M# i x
]
# l0 ]+ i% m6 {2 `: y/ e$ f* T; dend: f, ^( ?: X, k$ n: B- j
) V) w, y: T* k& l% i# s# n3 |to update-global-reputation-list
' ?& q) T+ v, n9 e2 }let j 0
# [, U# T$ M1 D% owhile[j < people]
; U5 Q( b* U4 j, H& e[0 p5 T! s) K# Y6 X& J; y8 p" ^
let new 0# l7 _2 D) }' }
;;暂存新的一个全局声誉; ~3 @6 u8 h: `- N
let i 0. W9 p! Z- U' ~. p
let sum-money 09 O! X) s1 F U, Z, d1 K9 A
let credibility-money 05 g( b$ Q" n0 [ i# h7 p8 l) B, ]
while [i < people]$ i7 o3 M0 M9 I- X7 h
[
& y4 u( @; C% v* X2 G1 [/ lset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))2 Q5 K+ h2 ?; }3 s+ P5 S2 Q
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
$ b8 E6 U3 Y2 G2 Lset i (i + 1)& M; `( W; ?, b
]' `6 ~+ M1 U# z
let k 0+ R9 B7 j* p: ?6 `+ c
let new1 0
1 _9 P9 S( h" m7 Owhile [k < people]
0 V* m. j9 }/ ?$ j[
) c, K5 X! k: t& X! @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)$ M2 M( ^" {0 \1 R$ u
set k (k + 1)
H$ w# h( l& d]
; b0 E- Z. a! w# }' tset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 1 E2 v3 M, R5 x. l' F
set global-reputation-list (replace-item j global-reputation-list new)' s$ i0 ~% K' p' b" X- w2 x2 H1 {
set j (j + 1)
5 O1 c% S4 d& V1 V7 X]
5 {+ N$ b+ ]1 Vend# E4 A1 k3 _4 }) r" l
# ]+ j5 E9 t3 B) i( J( k2 M2 K# V. s l1 C" G5 p' ?
3 X3 X& P V6 r+ D0 j! ?
to get-color' j3 \3 V0 ?) h) ]- q7 o
8 o6 N+ N. a4 K* e- f$ A
set color blue. h8 Y9 u; ]5 j: d0 X* _, N
end& n" N8 ]. W2 h6 V
, i; W+ g6 z; m4 e+ n3 zto poll-class
$ O p; u: O9 T2 Q6 Nend6 d# Z, E) V- P1 f4 D# E% x% s: O
& f3 Q! R! y* rto setup-plot1! I7 u8 M% J" I- x1 i! p% ^& c: e
% p- \) J _" e/ M6 Hset-current-plot "Trends-of-Local-reputation"
! k/ h, G; P) W. K' B# U4 w% C" g3 S) `$ Z! m4 N0 o
set-plot-x-range 0 xmax
* O! n# K9 ] Z1 x4 Y0 v1 O% i! c, l# ], I8 S
set-plot-y-range 0.0 ymax
8 n$ `7 O. ^0 {% l0 Aend0 u1 }' ?+ c8 \) ]
! l1 d l# i) M9 O! r' v
to setup-plot2
$ [! y5 g5 J) H0 [" S4 t2 B' g7 d
) G3 i+ d* }& p* v. Z( ^8 cset-current-plot "Trends-of-global-reputation"
+ W P# p3 `8 p7 a7 r* W
% z. p0 n, v8 G; X, S V5 eset-plot-x-range 0 xmax) M0 Z" V2 B7 J
5 N( Y2 A! e7 G0 `3 I( z. S
set-plot-y-range 0.0 ymax2 C) m( j A0 @- `% m- R
end
* M& D# W/ T! l
, t. y# Q' O7 d9 n! Dto setup-plot3
" _6 {( G& _$ C3 F' K4 x( D$ x8 q) d* N" [' _# e
set-current-plot "Trends-of-credibility"
3 t8 |3 @# E, F0 p: T; F
! s( \( ?4 O! e, b7 o6 ?# nset-plot-x-range 0 xmax
4 u, A% @0 \/ x1 v0 V" `: {4 J! Y( v, ?# ]" z: z
set-plot-y-range 0.0 ymax6 W( n3 H9 |7 V3 S
end
" E" l. J/ ]2 _ \. H# [- M. h9 M1 ^4 g5 u) v3 \
to do-plots! b* \( ^& ^$ m# ~7 A& |
set-current-plot "Trends-of-Local-reputation"8 a! L: r# z t- X
set-current-plot-pen "Honest service". U. o( p! e; V. Z" C! [
end
# {8 h( Q7 r3 `# ?0 @+ H
! r( Q3 e) f" {7 [0 U( l[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ] |
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