
\documentclass[a4j,12pt]{jarticle}
\usepackage[dvips]{graphicx}

% \setlength{\topmargin}{0mm}
% \setlength{\oddsidemargin}{0mm}
% \setlength{\evensidemargin}{0mm}
% \setlength{\textheight}{240mm}
% \setlength{\textwidth}{160mm}
% \setlength{\headheight}{0mm}
% \setlength{\headsep}{0mm}
% \setlength{\parskip}{0mm}
% \setlength{\columnsep}{6mm}
% \setlength{\baselineskip}{6mm}
% \setlength{\parindent}{5mm}

% top margin
% \voffset=-8mm

\voffset=3mm

% left margin
\oddsidemargin=2mm

% width length
\setlength{\textwidth}{39zw}

% height length
\setlength{\textheight}{38\baselineskip}
\addtolength{\textheight}{\topskip}

\footskip=10mm

\begin{document}

\setlength{\baselineskip}{20pt}

\pagenumbering{roman}
\setcounter{page}{0}

\begin{center}
\section*{$B35MW(B}
\end{center}

$B5!3#K]Lu$J$I$N<+A38@8l=hM}$K$*$$$F!";HMQIQEY$N9b$$I=8=$dDj7?E*$J8@$$2s(B
$B$7$J$I$r<}=8$7$?F|K\8l6&5/I=8=<-=q$,I,MW$H$5$l$F$$$k!#=>Mh!"<-=q(B
$B$KEPO?$9$kI=8=$O?M<j$GCj=P$5$l$F$$$?$,!"KDBg$J%G!<%?$,I,MW$H$J$k$?$a!"(B
$B7W;;5!$K$h$C$F<+F0E*$KCj=P$9$kJ}K!$,9M$($i$l$F$-$?!#(B
$B8=:_!"(B$N$-gram$BE}7W=hM}$r1~MQ$7$F;HMQIQEY$N9b$$I=8=$dDj7?E*$J8@$$2s(B
$B$7$rCj=P$9$kJ}K!$,Ds0F$5$l$F$$$k!#(B
$B$7$+$7Bg5,LO%3!<%Q%9$X$NE,MQ$O%3!<%Q%9<+BN$,:n$i$l$F$$$J$+$C$?$N$G$^$@(B
$B9T$o$l$F$$$J$$!#(B

$B$=$3$GK\8&5f$G$O!"=EJ8J#J8$r<}=8$7$?(BCREST$B%3!<%Q%9Ls(B9$BK|J8$KBP$7$F!"8zN($h$/%Q%?!<%s$rCj=P$9$k$?$a!"3FIJ;l$NCV$-49$($r(B
$B9T$$!"O":?6&5/(B$N$-gram$BCj=PJ}K!!"N%;66&5/(B$N$-gram$BCj=PJ}K!$rMQ$$$F=EJ8J#J8$N9=B$%Q%?!<%s$NCj=P$r;n$_$?!#(B


$B$=$N7k2L!"IJ;l$NCV$-49$($r9T$&$3$H$G(B
$B8zN($h$/%Q%?!<%s$,Cj=P$5$l$k$3$H$,3NG'$G$-$?!#(B
$BO":?6&5/!"N%;66&5/(B$N$-gram$BCj=PJ}K!$NN>J}$GBg5,LO(B
$B%3!<%Q%9$+$i=EJ8J#J8$N9=B$%Q%?!<%s$rCj=P$9$k$3$H$,$G$-$?!#(B
\clearpage

\tableofcontents
\clearpage

\listoffigures
\clearpage
\listoftables
\clearpage

\pagenumbering{arabic}

\section{$B$^$($,$-(B}
$B5!3#K]Lu$J$I$N<+A38@8l=hM}$K$*$$$F!";HMQIQEY$N9b$$I=8=$dDj7?E*$J8@$$2s(B
$B$7$J$I$r<}=8$7$?F|K\8l6&5/I=8=<-=q$,I,MW$H$5$l$F$$$k!#=>Mh!"<-=q(B
$B$KEPO?$9$kI=8=$O?M<j$GCj=P$5$l$F$$$?$,!"KDBg$J%G!<%?$r07$&$?$a$KHs>o$K(B
$B:$Fq$G$"$k!#(B

$B$=$3$G7W;;5!$K$h$C$F<+F0E*$KCj=P$9$kJ}(B
$BK!$,9M$($i$l$F$-$?!#(B
$B$7$+$7$=$N<jK!$G$O(B
$BKDBg$J%G!<%?$,I,MW$H$J$j!"ITMW$JI=8=$,B??t:.:_$7$F$7$^$&$H$$$&LdBjE@$,$"$C(B
$B$?!#(B

$B=>Mh$NJ}K!$H$7$F!"(B[1]$B$NJ}K!$,Ds0F$5$l$F$$$k!#$3(B
$B$NJ}K!$OBgNL$N8@8l%G!<%?$+$i!";HMQIQEY$N9b$$I=8=$*$h$SI=8=$NAH$r<+F0E*(B
$B$KH/8+$7=87W$9$kJ}K!$G$"$k!#(B
$B$3$NJ}K!$GCj=P$5$l(B
$B$?J8;zNs$rAH$_9g$o$;$F!"J8Cf$NN%$l$?0LCV$K6&5/$9$kJ8;zNs$NAH(B($BN%;67?6&(B
$B5/I=8=(B)$B$rCj=P$7!"IQEY$r5a$a$kJ}K!$b(B[1]$B$GDs0F$5$l$F$$$k!#(B
[1]$B$r1~MQ$7$?8&5f$H$7$FC18lC10L$KJQ49$7$?86J8$rMQ$$$kJ}K!(B[2]$B$d!"=EJ8J#J8$KE*$r9J$C$FE,@Z$JC18l$NCV$-49$($r9T$&J}K!(B[3]$B$,9T$o$l$F$$$k!#(B

$B$7$+$7Bg5,LO%3!<%Q%9$+$i$NCj=P$O%3!<%Q%9$,L5$+$C$?$?$a$K$^$@9T$o$l$F$$$J$+$C$?!#$7$+$7:G6a$K$J$jEE;R<-=q$d?7J95-;v%G!<%?Ey$,=PHG$5$l!"$=$l$r4p$K<}=8$9$k$3$H$,2DG=$K$J$C$?(B[4]$B!#(B




$B$=$3$G!"K\8&5f$G$O3FIJ;l$NCV$-49$($r9T$$!"(B{\small [1]}$B$N<jK!$rMQ$$$FBg5,LO%3!<%Q%9$+$i=EJ8J#J8$N9=B$%Q%?!<%s$NCj=P$r;n$_$k!#(B

$B7k2L!"IJ;l$NCV$-49$($r9T$&$3$H$G(B
$B8zN($h$/%Q%?!<%s$,Cj=P$5$l$k$3$H$,3NG'$G$-$?!#(B
$BO":?6&5/!"N%;66&5/(B$N$-gram$BCj=PJ}K!$NN>J}$GBg5,LO(B
$B%3!<%Q%9$+$i=EJ8J#J8$N9=B$%Q%?!<%s$rCj=P$9$k$3$H$,$G$-$?!#(B


$B0J2<!"(B2$B>O$G$O(B$N$-gram$BE}7W=hM}$K$h$kI=8=Cj=PK!$K$D$$$F!"(B3$B>O$G$OK\8&5f$G9T$&Cj=P<B83$K$D$$$F!"(B4$B>O$G$O<B837k2L$K$D$$$F!"$=$7$F(B5$B>O$G$O9M;!$K$D$$$F!":G8e$K(B6$B>O$G$O7kO@$H:#8e$N2]Bj$K$D$$$F=R$Y$k!#(B


\clearpage

\section{$N$-gram$BE}7W=hM}$K$h$kI=8=Cj=PK!(B}
$BK\8&5f$G;HMQ$9$k!"(B$N$-gram$B$r;HMQ$7$?J8;zNsCj=PK!$H$7$F!"(B{\small [1]}$B$NJ}K!(B
$B$r;HMQ$9$k!#0J2<$K$=$NJ}K!$rMWLs$7$F@bL@$9$k!#6&5/I=8=$K$O!"O":?7?6&5/I=(B
$B8=$HN%;67?6&5/I=8=$N(B2$B<oN`$,$"$k!#(B


\subsection{$BO":?6&5/(B$N$-gram$BCj=PJ}K!(B}

$BO":?6&5/(B$N$-gram$BCj=PJ}K!(B{\small [1]}$B$H$O!"?^(B1$B$G<($9J#?tJ8Cf$K(B2$B2s0J>e$N=P8=2s?t$r;}$DO"B3$7$?J8;zNs&A$rCj=P$9$kJ}K!$G$"$k!#0lEYCj=P$5$l$?J8;zNsFbIt$K4^$^$l$kItJ,J8;zNs&B$rCj=P$9$k$+H]$+$K$h$C$F!"<!$NM^@)K!$,$"$k!#(B\\

\vspace{-4mm}

\begin{description}

\vspace{-4mm}

\item [$B!&L5M^@)7?(B]  $BItJ,J8;zNs$G$bCj=PBP>]$H$9$k!#?^(B1$B$K<($9J8$r=hM}$7$?7k2L$rNc(B1$B$H$7$F<($9!#(B
\vspace{-2mm}
\begin{quote}

($BNc(B1)$B!VH`$O$$$$!W!"!VH`$O!W!"!V$$$$!WEy(B
\end{quote}

\item [$B!&<eM^@)7?(B]  $BItJ,J8;zNs$G$b!"B>$N>l=j$GFHN)$7$F=P8=$7$F$$$l$P!"Cj=P$NBP>]$H$9$k!#?^(B1$B$K<($9J8$r=hM}$7$?7k2L$rNc(B2$B$H$7$F<($9!#(B
\vspace{-2mm}
\begin{quote}

($BNc(B2)$B!VH`$O$$$$!W!"!VH`$O!W(B
\end{quote}
\item [$B!&6/M^@)7?(B]  $BItJ,J8;zNs$O0l@ZCj=P$7$J$$!#?^(B1$B$K<($9J8$r=hM}$7$?7k2L$rNc(B3$B$H$7$F<($9!#(B
\vspace{-2mm}
\begin{quote}
($BNc(B3)$B!VH`$O$$$$!W(B
\end{quote}
\end{description}

\vspace{-8mm}

\begin{figure}[h]
\begin{center}
\includegraphics[scale=1.1]{fig3.eps}
\vspace{-4mm}

\caption{$BO":?6&5/I=8=$NNc(B}
\end{center}
\end{figure}


\vspace{5mm}
$BO":?6&5/(B$N$-gram$BCj=PJ}K!$O$^$H$^$C$?I=8=$r$H$k$N$KE,$7$F(B
$B$$$k!#(B

\clearpage

$B<!$KO":?6&5/(B$N$-gram$BCj=PJ}K!$N%"%k%4%j%:%`$K$D$$$F@bL@$9$k!#(B
$BO":?6&5/(B$N$-gram$BCj=PJ}K!$N%"%k%4%j%:%`$O0J2<$N<j=g$G9T$o$l$k!#(B($B;2>HO@J8(B[1])

\begin{description}

\item [$B<j=g(B1$B!'!V86J8HVCO%U%!%$%k$N:n@.!W(B]

$B3F%l%3!<%I$K86J8HVCO$r$"$?$($k!#86J8HVCO$O!"8@8l%G!<%?>e$NJ8;zHV9f$+$iKvHx$^$G$NItJ,J8;zNs$X$N%]%$%s%?$rI=$9!#(B

\item [$B<j=g(B2$B!'!VHFMQ%=!<%H%U%!%$%k$N:n@.!W(B]

$B86J8HVCO%U%!%$%k$N3F%l%3!<%I$r!"J8;zNs$NJ8;z%3!<%I=g$K%=!<%H$7$?%U%!%$%k$r$D$/$k!#(B

\item [$B<j=g(B3$B!'!V0lCWJ8;z?t$N%+%&%s%H!W(B]

$BHFMQ%=!<%H%U%!%$%k$N3F%l%3!<%I$N<($9J8;zNs$r!"$=$ND>8e$N%l%3!<%I$NJ8;zNs$H@hF,J8;z$+$iHf3S$7!"0lCW$7$?J8;z?t$r=q$-9~$`!#(B

\item [$B<j=g(B4$B!'!VCj=PJ8;z?t$N5-F~!W(B]

$BHFMQ%=!<%H%U%!%$%k$N3F%l%3!<%I$NJ8;zNs$,!"@hF,$+$i2?J8;zCj=PBP>]$H$J$k$+$r5-=R!#(B

\item [$B<j=g(B5$B!'!V3HD%86J8HVCO%U%!%$%k$N:n@.!W(B]

$BHFMQ%=!<%H%U%!%$%k$r86J8HVCO=g$K%=!<%H$7D>$9(B($B3HD%86J8HVCO%U%!%$%k(B)$B!#(B

\item [$B<j=g(B6$B!'!VM-8zL58zH=Dj=hM}!W(B]

$B3HD%86J8HVCO%U%!%$%k$N3F%l%3!<%I$NCj=PJ8;z?t$rD4$Y!"M-8zL58zH=Dj$r9T$&!#(B
$BL58zH=Dj$NJ}K!$O(B
$BO@J8(B[1]$B;2>H!#(B

\item [$B<j=g(B7$B!'!V:F3HD%HFMQ%=!<%H%U%!%$%k$N:n@.!W(B]

$B:FEY!"HFMQ%=!<%H%U%!%$%k$N%l%3!<%I=g$K%=!<%H$9$k(B($B:F3HD%HFMQ%=!<%H%U%!%$%k(B)$B!#(B

\item [$B<j=g(B8$B!'!VCj=PJ8;zNs=87W=hM}!W(B]

$B:F3HD%HFMQ%=!<%H%U%!%$%k$N:NH]I=<(!"Cj=PJ8;z?t!"0lCWJ8;z?t$N4X78$rD4$Y$FCj=PJ8;zNs$r7hDj$9$k!#(B

\end{description}

$B<!$NNcJ8(B4$B$r0J>e$G@bL@$7$?%"%k%4%j%:%`$KE,MQ$5$;$?Nc$r<!%Z!<%8$N?^(B2$B$K<($9!#(B
\vspace{10mm}

($BNcJ8(B4)
\vspace{-5mm}
\begin{quote}
$B$5$$$?$5$/$i$,$5$$$?!#$5$/$i$N$O$J$,$5$$$?!#(B
\end{quote}

\clearpage

\begin{figure}[h]
\begin{center}
\includegraphics[scale=0.9]{fig9.eps}
\vspace{-4mm}

\caption{$BO":?6&5/I=8=Cj=P%"%k%4%j%:%`$N<B;\Nc(B}
\end{center}
\end{figure}


\clearpage




\vspace{3mm}

\subsection{$BN%;66&5/(B$N$-gram$BCj=PJ}K!(B}
$BN%;66&5/(B$N$-gram$BCj=PJ}K!(B{\small [1]}$B$H$O!"?^(B3$B$N&C$N$h$&$K86J8%G!<%?$NN%$l$?>l=j$K8=$l!"6&5/$9$kFs$D0J>e$NJ8;zNs$NAH9g$o$;$rCj=P$9$kJ}K!$G$"$k!#AH9g$o$;?t$H$ON%$l$?>l=j$K8=$l$?J8;zNs$NAH9g$;$N8D?t$G$"$k!#?^(B3$B$N&C$OAH$_9g$o$;?t#3$NJ8;zNs$NCj=P$G$"$k!#6&5/$N;EJ}$K$h$j!"<!$NM^@)K!$,$"$k!#(B\\

\vspace{-5mm}


\begin{description}

\item [$B!&L5M^@)7?(B]$B6&5/$9$kJ8;zNs$,J8Cf$K$"$k$3$H$@$1$r>r7o$H$7$FCj=P$9$k!#?^(B3$B$r=hM}$7$?7k2L$rNc(B4$B$H$7$F<($9!#(B
\vspace{-2mm}
\begin{quote}
\begin{verbatim}
($BNc(B4)
$B!VH`$O!AH`$O!AA*<j!W(B,$B!VA*<j!AM-L>!AA*<j!WEy(B
\end{verbatim}
\end{quote}
\vspace{-2mm}
\item [$B!&<eM^@)7?(B]$B>e5-$N>r7o$K2C$(!"Cj=P$9$kJ8;zNs$O8_$$$K0[$J$k$b$N$N$_Cj=P$9$k!#?^(B3$B$r=hM}$7$?7k2L$rNc(B5$B$H$7$F<($9!#(B
\vspace{-2mm}
\begin{quote}
\begin{verbatim}
($BNc(B5)
$B!VH`$O!AM-L>!AA*<j!W(B,$B!VA*<j!AH`$O!AM-L>!W!VM-L>!AA*<j!AH`$O!W(B,$B!VH`$O!AA*<j!AM-L>!W!VM-L>!AH`$O!AA*<j!W(B
\end{verbatim}
\end{quote}

\vspace{-2mm}
\item [$B!&6/M^@)7?(B]$B>e5-$NFs$D$N>r7o$K2C$($F$5$i$K!"Cj=P$9$kI=8=$N@hF,$NJ8;zNs$HKvHx$NJ8;zNs$H$N4V$K$O!"CeL\$9$kJ8;zNs$,Fs2s0J>e8=$l$J$$$b$N$rCj=P$9$k!#?^(B3$B$r=hM}$7$?7k2L$rNc(B6$B$H$7$F<($9!#(B
\vspace{-2mm}
\begin{quote}
\begin{verbatim}
($BNc(B6)
$B!VH`$O!AM-L>!AA*<j!W!"!VA*<j!AH`$O!AM-L>!W!"!VM-L>!AA*<j!AH`$O!W(B
\end{verbatim}
\end{quote}
\end{description}

\vspace{-2mm}

\begin{figure}[h]
\begin{center}
\includegraphics[scale=0.8]{fig4.eps}
\vspace{-3mm}

\caption{$BN%;66&5/I=8=$NNc(B}
\end{center}
\end{figure}

\clearpage

$B<!$K3FM^@)$K$*$$$F!"?^(B3$B$r=hM}$7$?7k2L$rI=(B1$B$K$^$H$a$F<($9!#(B

\begin{table}[h]
\begin{center}
\caption{$BN%;66&5/I=8=$NAH$_9g$o$;Nc(B}
\begin{tabular}{|c|c|c|c|}
\hline
$BCj=PI=8=(B&$BL5M^@)(B&$B<eM^@)(B&$B6/M^@)(B\\
\hline
$BH`$O(B $B!A(B $BH`$O(B $B!A(B $BM-L>(B&$B"~(B&  &\\
$BH`$O(B $B!A(B $BH`$O(B $B!A(B $BA*<j(B&$B"~(B&  &\\
$BH`$O(B $B!A(B $BM-L>(B $B!A(B $BH`$O(B&$B"~(B&  &\\
$BH`$O(B $B!A(B $BM-L>(B $B!A(B $BM-L>(B&$B"~(B&  &\\
$BH`$O(B $B!A(B $BM-L>(B $B!A(B $BA*<j(B&$B"~(B&$B"~(B&$B"~(B\\
$BH`$O(B $B!A(B $BA*<j(B $B!A(B $BH`$O(B&$B"~(B&  &\\
$BH`$O(B $B!A(B $BA*<j(B $B!A(B $BM-L>(B&$B"~(B&$B"~(B&\\
$BH`$O(B $B!A(B $BA*<j(B $B!A(B $BA*<j(B&$B"~(B&  &\\
$BM-L>(B $B!A(B $BH`$O(B $B!A(B $BM-L>(B&$B"~(B&  &\\
$BM-L>(B $B!A(B $BH`$O(B $B!A(B $BA*<j(B&$B"~(B&$B"~(B&\\
$BM-L>(B $B!A(B $BM-L>(B $B!A(B $BA*<j(B&$B"~(B&  &\\
$BM-L>(B $B!A(B $BA*<j(B $B!A(B $BH`$O(B&$B"~(B&$B"~(B&$B"~(B\\
$BM-L>(B $B!A(B $BA*<j(B $B!A(B $BM-L>(B&$B"~(B&  &\\
$BM-L>(B $B!A(B $BA*<j(B $B!A(B $BA*<j(B&$B"~(B&  &\\
$BA*<j(B $B!A(B $BH`$O(B $B!A(B $BM-L>(B&$B"~(B&$B"~(B&$B"~(B\\
$BA*<j(B $B!A(B $BH`$O(B $B!A(B $BA*<j(B&$B"~(B&  &\\
$BA*<j(B $B!A(B $BM-L>(B $B!A(B $BA*<j(B&$B"~(B&  &\\
\hline

\end{tabular}

\end{center}
\end{table}

$B$3$N$h$&$K$7$F!"N%;66&5/Cj=PJ}K!$OD9$$J8$K$*$1$k(B
$BN%$l$?>l=j$K$"$kI=8=$rCj=P$9$k$3$H$,$G$-$k$?$a!"=EJ8!&J#J8$K$*$1$kI=8=$b(B
$BH/8+2DG=$G$"$k!#(B


$B<!$KN%;66&5/(B$N$-gram$BCj=PJ}K!$N%"%k%4%j%:%`$K$D$$$F@bL@$9$k!#(B
$BN%;66&5/(B$N$-gram$BCj=PJ}K!$OO":?6&5/(B$N$-gram$BCj=PJ}K!$N%"%k%4%j%:%`$G=R$Y$?<j=g(B7$B$^$GF1$8(B
$B<j=g$G9T$&!#(B
$B$=$7$FA0=`Hw$H$7$FO":?6&5/(B$N$-gram$BCj=PJ}K!$GCj=P$5$l$?J8;zNs$KJ8;zNsHV9f$rIUM?$9$k!#(B
$B<!$K0J2<$N<j=g$G9T$&!#(B

\begin{description}

\item [$B<j=g(B9$B!'!V:F3HD%HFMQ%=!<%H%U%!%$%k$N:F%=!<%H!W(B]

$B:F3HD%HFMQ%=!<%H%U%!%$%k$r86J8HVCO=g$K%=!<%H$7!"3HD%86J8HVCO%U%!%$%k$N%l%3!<%I=g$KLa$9!#(B

\item [$B<j=g(B10$B!'!VJ8HV9f$NIUM?!W(B]

$B3F%l%3!<%I$KJ8HV9f$rIUM?$9$k!#(B

\item [$B<j=g(B11$B!'!V%U%!%$%k$N05=L!W(B]

$BJ8HV9f!"J8;zNsHV9f!"Cj=PJ8;z?t!"86J8HVCO$N(B4$B$D$NMs0J30$O:o=|$9$k!#$=$7$FJ8;zNsHV9fMs$NCM$,$J$$%l%3!<%I$r:o=|$9$k(B($BN%;66&5/7?05=L%U%!%$%k(B)
$B!#(B

\item [$B<j=g(B12$B!'N%;67?6&5/I=8=$NCj=P$H%+%&%s%H(B]

$BJ8;zNsHV9f$NA4$F$NAH9g$;$r=q$-=P$7!"F10l$NAH?t$r%+%&%s%H$9$k!#(B

\end{description}

$B0J>e$G@bL@$7$?%"%k%4%j%:%`$rO":?6&5/Cj=PK!%"%k%4%j%:%`$GMQ$$$?NcJ8(B4$B$GE,MQ$5$;$?Nc$r?^(B4$B$K<($9!#(B

\vspace{20mm}

\begin{figure}[h]
\begin{center}
\includegraphics[scale=0.9]{fig10.eps}
\caption{$BN%;66&5/I=8=Cj=P%"%k%4%j%:%`$N<B;\Nc(B}
\end{center}
\end{figure}


\clearpage


\subsection{$BC18l$KCeL\$7$?Cj=P(B}

$N$-gram$BCj=PK!$G$O86J8%G!<%?$KBP$7$FJ8;zC10L$b$7$/$OC18lC10L$K$h$kCj=P$r9T$&$3$H$,$G$-$k!#K\8&5f$G$OCGJRE*$JJ8;zNs$NCj=P$r>/$J$/$9$k$?$a$K!"86J8%G!<%?$KBP$7$F$"$i$+$8$a7ABVAG2r@O$r9T$$!"C18lC10L$K$h$kCj=P$r9T$J$&!#K\8&5f$G9T$&C18lC10L$K$h$kCj=P$O!"$"$k(B1$BJ8;z$NA43QJ8;z$rC18l$K3dM?$($kJ}K!$G9T$&!#C18lC10L$K$*$1$k%Q%?!<%sCj=P$^$G$NN.$l$r0J2<$N?^(B5$B$K<($9!#?^(B5$BFb$NC18l%F!<%V%k$O$"$kC18l$KBP$7$FM?$($kJ8;z$rBP1~$5$;$?%F!<%V%k$r0UL#$9$k!#?^(B5$BFb$N2<@~It$O7W;;5!$K$h$k=hM}$rI=$7$F$$$k!#?^(B5$BFb$NFs=EOHFb$OF~=PNO%G!<%?$r0UL#$9$k!#(B

\vspace{10mm}
\begin{figure}[h]
\begin{center}
\includegraphics[scale=1.0]{fig5.eps}
\caption{$BC18lC10L$K$h$k%Q%?!<%sCj=P$NN.$l(B}
\end{center}
\end{figure}

$B?^(B5$B$h$j!"$^$:86J8%G!<%?$KBP$77ABVAG2r@O$r9T$&!#$=$7$FC18l%F!<%V%k$h$j;2>H$7$FC18l$KBP1~$7$?0lJ8;z$KCV$-49$($k!#$=$7$FCV$-49$($?%G!<%?$G(B$N$-gram$BCj=P$r9T$&!#$=$7$FF@$i$l$?7k2L$O!"0lJ8;z$KCV$-49$(8e$N%G!<%?$,=PNO$5$l$k!#$=$3$G$b$&0lEYC18l%F!<%V%k$r;2>H$7$F!"0lJ8;z$+$iBP1~$7$?C18l$KCV$-49$($k!#0J>e$N2aDx$G!"C18lC10L$K$h$kCj=P$r9T$&!#(B



\clearpage


\section{$BCj=P<B83(B}


\subsection{$BO":?6&5/(B$N$-gram$BCj=PK!$K$h$k<B83(B}

$BK\<B83$G$OO":?6&5/(B$N$-gram$BCj=PK!$G$O<eM^@)7?$NCj=P$r9T$&!#L5M^@)7?$G$OA4$F$NItJ,J8;zNs$rCj=P$7$F$7$^$$!"6/M^@)$G$OItJ,J8;zNs$,Cj=P$G$-$J$$LdBj$,$"$k$?$a9T$o$J$$!#K\<B83$G$OD4::BP>]$rC18l?t$,(B5$B0J>e$G9=@.$5$l$kC18lNs$G9T$$!"IJ;l$NCV$-49$($r9T$C$?>l9g(B(3.3$B@a;2>H(B)$B$K$D$$$F$bD4::$r$9$k!#$^$?C18lNs$r9=@.$9$kC18l?t$rA}$d$9$3$H$G%Q%?!<%sCj=P@:EY$N8~>e$,4|BT$G$-$k$H9M$(!"C18lNs$r9=@.$9$kC18l?t$,(B7$B0J>e!"(B9$B0J>e$K$D$$$F$bD4::$r9T$&!#(B5$B0J2<$G9=@.$5$l$kC18lNs$OJ87?%Q%?!<%s$r@.$9Cj=P$,>/$J$$$?$aK\<B83$G$O9T$o$J$$$3$H$H$9$k!#(B

$B$3$3$G$$$&C18l?t$H$O!"<!$NNc(B7,$BNc(B8$B$K<($9MM$JC18lNs$r9=@.$9$kC18l$N?t$r0UL#$9$k!#NcCf$N(B'/'$B$OC18l6-3&@~$r0UL#$9$k!#(B

\begin{quote}
($BNc(B7)~~ $BH`(B/$B$O(B/$B30(B/$B$K(B/$B9T$/(B ~~~~~ $BC18l?t(B5

($BNc(B8) ~~ $BH`=w(B/$B$O(B/$B:#F|(B/$B$O(B/$BD.(B/$B$K(B/$BGcJ*(B/$B$K(B/$B9T$/(B ~~~~~ $BC18l?t(B9
\end{quote}


\subsection{$BN%;66&5/(B$N$-gram$BCj=PK!$K$h$k<B83(B}


$BN%;66&5/(B$N$-gram$BCj=PK!$K$h$k<B83$O0J2<$N(B3$B$D$N<oN`$G9T$$!"IJ;l$NCV$-49$($r9T$C$?>l9g(B(3.3$B@a;2>H(B)$B$K$*$$$F$bD4::$9$k!#(B

\begin{description}
\item [\bf $B<B83>r7o(B1)] $B<eM^@)7?$GC18lNs$NAH$_9g$o$;?t(B3

\item [\bf $B<B83>r7o(B2)] $B<eM^@)7?$GC18lNs$NAH$_9g$o$;?t(B4

\item [\bf $B<B83>r7o(B3)] $B6/M^@)7?$GC18lNs$NAH$_9g$o$;?t(B3
\end{description}

$B$3$3$G$$$&AH$_9g$o$;?t$H$O!"<!$NNc(B9,10$B$K<($9MM$JC18lNs$NAH$_9g$o$;$N?t$G$"$k!#NcCf$N(B'/'$B$OC18l6-3&@~$r0UL#$9$k!#(B

\begin{quote}
($BNc(B9)~~ $BH`(B/$B$O(B~$B!A(B~$B$r(B/$B$7$F(B~$B!A(B~$B$r(B/$B$9$k(B ~~~~~$BAH$_9g$o$;?t(B3

($BNc(B10)~~ $BH`(B/$B$O(B~$B!A(B~$B$G(B/$B$"$j(B~$B!A(B~$BH`=w(B/$B$O(B~$B!A(B~$B$G(B/$B$"$k(B ~~~~~$BAH$_9g$o$;?t(B4 
\end{quote}



\clearpage

\subsection{$BIJ;l$NCV$-49$((B}

$BK\8&5f$G$O=EJ8J#J8$N%Q%?!<%sCj=P$r8zN(NI$/9T$&$?$a$K!"O":?6&5/(B$N$-gram$BCj=PK!$K$h$k<B83!"N%;66&5/(B$N$-gram$BCj=PK!$K$h$k<B83$=$l$>$l$KIJ;l$NCV$-49$($r0J2<$N(B5$B$D$N<oN`$G9T$&!#(B
\begin{description}
\item [$BCV$-49$((BA)]$BC18lC10L(B

\item [$BCV$-49$((BB)]$BL>;l"*(BN

\item [$BCV$-49$((BC)]$BL>;l"*(BN$B!"F0;l"*(BV

\item [$BCV$-49$((BD)]$BL>;l"*(BN$B!"!V(BN$B$N(BN$B!W"*(BN$B!"!V(BNN$B!D!W"*(BN$B!"!V7AMF;l(B+N$B!W"*(BN

\item [$BCV$-49$((BE)]($BCV$-49$((BD)$B$+$DF0;l"*(BV
\end{description}

$BK\8&5f$G9T$&IJ;lCV$-49$($K$D$$$F(B
$BL>;l$dO"B3L>;l$J$I$O=EJ8J#J8$N9=B$$K4X78$NL5$$IJ;l$G$"$k$H9M$($i$l$k$?$aCV$-49$($F$$$k!#F0;l$K$D$$$F$OJ8$N3K$r$J$9IJ;l$G$"$k$?$a!"CV$-49$($OITE,$G$"$k$H9M$($i$l$k$,!"J8$N9=B$$r8zN($h$/Cj=P$9$k$?$a$KCV$-49$($F$$$k!#(B

$B<!$K0J2<$K<($9NcJ8$r>e$N3FIJ;lCV$-49$($r9T$C$?>l9g$NNc$r<($9!#NcCf$N(B'/'$B$OC18l6-3&$r0UL#$9$k!#(B

\begin{quote}
($BNcJ8(B7)$B;d$N8&5f$O$I$&$d$i8+DL$7$,L@$k$/$J$j$^$7$?$N$GC`<!8&5f7k2L$r$*CN$i$;$7$^$9!#(B
\end{quote}

\begin{description}

\item [$BCV$-49$((BA)]
$B;d(B/$B$N(B/$B8&5f(B/$B$O(B/$B$I$&$d$i(B/$B8+DL$7(B/$B$,(B/$BL@$k(B/$B$/$J$j(B/$B$^$7(B/$B$?(B/$B$N$G(B/$BC`<!(B/$B8&5f(B/$B7k2L(B/$B$r(B/$B$*CN$i$;$7(B/$B$^$9(B/$B!#(B

\item [$BCV$-49$((BB)]N/$B$N(B/N/$B$O(B/$B$I$&$d$i(B/N/$B$,(B/$BL@$k(B/$B$/$J$j(B/$B$^$7(B/$B$?(B/$B$N$G(B/N/N/N/$B$r(B/$B$*CN$i$;$7(B/$B$^$9(B/$B!#(B

\item [$BCV$-49$((BC)]N/$B$N(B/N/$B$O(B/$B$I$&$d$i(B/N/$B$,(B/$BL@$k(B/V/$B$^$7(B/$B$?(B/$B$N$G(B/N/N/N/$B$r(B/V/$B$^$9(B/$B!#(B

\item [$BCV$-49$((BD)]N/$B$O(B/$B$I$&$d$i(B/N/$B$,(B/$BL@$k(B/$B$/$J$j(B/$B$^$7(B/$B$?(B/$B$N$G(B/N/$B$r(B/$B$*CN$i$;$7(B/$B$^$9(B/$B!#(B

\item [$BCV$-49$((BE)]N/$B$O(B/$B$I$&$d$i(B/N/$B$,(B/$BL@$k(B/V/$B$^$7(B/$B$?(B/$B$N$G(B/N/$B$r(B/V/$B$^$9(B/$B!#(B
\end{description}

\clearpage


\subsection{$B@:EYD4::J}K!(B}

$BK\8&5f$G$O=EJ8J#J8$rCf?4$K<}=8$7$?(BCREST$BNcJ8Ls(B9$BK|J8(B{\small [4]}$B$KBP$7$F(B$N$-gram$B$r1~MQ$7$?J8;zNsCj=PK!(B{\small [1]}$B$r9T$&!#(BCREST$BNcJ8$OD9C;MM!9$J=EJ8J#J8$r<}=8$7$F$$$k!#99$K(BCREST$BNcJ8$K$O1Q8l$NBPLu$b7G:\$5$l$F$$$k!#(BCREST$BNcJ8$K$*$$$F!"F|K\J80lJ8$r9=@.$9$kJ?6QC18l?t$OLs(B10.6$BC18l$G$"$k!#(BCREST$BNcJ8$N0lIt$r0J2<$K<($9!#(B

\vspace{1mm}

\begin{quote}
($BNcJ8(B8)
$B;d$O7D1~5A=NBg3X$G650i$r<u$1$?$N$G!"%S%8%M%9$K4X$9$kM}2r!"$H$/$K:bL3!"%^!<%1%F%#%s%05Z$S@oN,7W2h$NJ,Ln$K$*$1$kM}2r$,?<$^$j$^$7$?!#(B

$BBPLu!d!d(BMy education at Keio has enhanced my understanding of business, especially in the areas of finance, marketing and strategic planning.

($BNcJ8(B9)
$B;d$O$=$&8@$C$F$$$k?M$rCN$C$F$$$k!#(B

$BBPLu!d!d(BI know a man who says so.

($BNcJ8(B10)
$BH`$O;m?M$G$b$"$j308r41$G$b$"$k!#(B

$BBPLu!d!d(BHe is a poet and diplomat.


($BNcJ8(B11)
$B;d$O=q$/%Z%s$,$J$$!#(B

$BBPLu!d!d(BI have no pen to write with.

\end{quote}

\vspace{1mm}


$B<!$K3F<B83$r9T$$!"=PNO$5$l$?%G!<%?$+$iCj=PIQEY?t$NB?$$>e0L(B100$B%G!<%?$rBP>]$K!"<j:n6H$K$h$j=EJ8J#J8$N%Q%?!<%s$G$"$k$+$rD4::$9$k!#D4::$NNc$H$7$F<!$NNc(B11$B!"Nc(B12$B$NMM$J%G!<%?$rCj=P$7$?$H$9$k!#(B

\begin{quote}
($BNc(B11)~~~$B$rJ9$$$F4n$s$@(B

($BNc(B12)~~~$BH`$N8@$&$3$H$O(B
\end{quote}

$BNc(B11$B$N>l9g!"!V!A$rJ9$$$F!"!A4n$s$@!W$H$$$C$?JBNs$7$?J8$KJ,2r$G$-$k$?$a!"=EJ8$N%Q%?!<%s$G$"$k$HH=CG$9$k!#(B
$BNc(B12$B$N>l9g!"!V8@$&$3$H!W$GKd$a9~$_J8$H$J$C$F$$$k$?$a!"J#J8$N%Q%?!<%s$G$"$k$HH=CG$9$k!#(B


\clearpage

\section{$B<B837k2L(B}
\subsection{$BO":?6&5/(B$N$-gram$BCj=PK!$K$h$k<B837k2L(B}

$BO":?6&5/(B$N$-gram$BCj=PK!$K$h$k<B83$r9T$C$?!#O":?6&5/(B$N$-gram$BCj=PK!$K$h$C$FCj=P$7$?%Q%?!<%sNc$rI=(B2$B$K<($9!#I=(B2$B$NCj=P%Q%?!<%sCf$N(B'/'$B$OC18l6-3&$r0UL#$9$k!#I=(B2$B$NC18l?t$OCj=P$7$?%Q%?!<%s$,9=@.$9$kC18l?t$r0UL#$9$k!#I=(B2$B$NCV$-49$(Fb$N!V(BA,B$B!WEy$OIJ;l$NCV$-49$((B(3.3$B@a;2>H(B)$BFb$N!VCV$-49$((BA,$BCV$-49$((BB$B!W$KBP1~$7$F$$$k!#I=(B2$B$N!VI>2A!W$O=EJ8J#J8$N%Q%?!<%s$r9=@.$7$F$$$k$H;W$o$l$kI=8=$r"~$H$7!"$=$&$G$J$$$b$N$r!_$H$7$F$$$k!#(B



\begin{table}[h]
\caption{$BO":?6&5/(B$N$-gram$BCj=PK!$K$h$kCj=P%Q%?!<%sNc(B}
\begin{center}
\begin{tabular}{|c|c|c|c|}
\hline
$BCj=P%Q%?!<%s(B&$BC18l?t(B&$BCV$-49$((B&$BI>2A(B\\
\hline
 $B$K(B/$B$J$k(B/$B$H(B/$B;W$$(B/$B$^$9(B &    5&A & $B"~(B\\
\hline
$BLr(B/$B$K(B/$BN)$D(B/$B$b$N(B/$B$H(B/$B;W$$(B/$B$^$9(B & 7 & A &$B"~(B\\
\hline
$B<j(B/$B$K(B/$B4@(B/$B$r(B/$B0.$C(B/$B$F(B/$B>!Ii(B/$B$r(B/$BD/$a(B & 9 & A &$B"~(B\\
\hline
$B$H(B/$B$$$&(B/N/$B$,(B/$B$"$k(B & 5 & B & $B"~(B\\
\hline
 N/$B$O(B/N/$B$N(B/$B$"$k(B/N/$B$@(B&  7&B & $B"~(B\\
\hline
N/$B$N(B/N/$B$K(B/$BEv$?$C(B/$B$F(B/N/$B$,(B/$B$"$k(B & 9 & B &$B"~(B\\
\hline       
 V/$B$F(B/N/$B$r(B/V/      &    5&C & $B"~(B\\
\hline
N/$B$K(B/V/$B$F(B/V/V/$B$?(B & 7 & C & $B"~(B\\
\hline
N/$B$r(B/V/N/$B$K(B/N/$B$r(B/V/$B$?(B & 9 & C &$B"~(B\\
\hline
N/$B$H(B/$B$$$&(B/N/$B$@(B & 5 & D & $B"~(B\\
\hline
N/$B$O(B/N/$B$K(B/$BBP$9$k(B/N/$B$,(B &7& D &$B"~(B\\
\hline
N/$B$r(B/V/$B$F(B/V &5&E&$B"~(B\\
\hline
N/$B$r(B/V/$B$F(B/N/$B$r(B/V &7 &E&$B"~(B\\

\hline
$B$K(B/$B5$(B/$B$,(B/$BCe$$(B/$B$?(B &   5&A & $B!_(B\\
\hline
$B8f(B/$BLBOG(B/$B$r(B/$B$*(B/$B$+$1(B/$B$7(B/$B$F(B & 7 &A&$B!_(B\\
\hline
$BBg2H(B/$B$O(B/$BH`(B/$B$K(B/$BIt20(B/$B$r(B/$B=P$F(B/$B9T$/(B/$B$h$&(B & 9 &A&$B!_(B\\
\hline
N/N/$B$N(B/N/$B$r(B & 5 & B &$B!_(B\\
\hline
N/$B$O(B/N/$B$N(B/N/$B$r(B/N & 7&B & $B!_(B \\
\hline
N/$B$N(B/N/$B$K(B/$B$O(B/N/$B$N(B/N/$B$,(B & 9 &B&$B!_(B\\
\hline
N/$B$N(B/N/$B$r(B/V & 5&C & $B!_(B\\
\hline
N/$B$N(B/N/$B$,(B/V/V/$B$?(B &7&C&$B!_(B\\
\hline
\end{tabular}
\end{center}
\end{table}

\clearpage

$B<!$KI=(B3$B$KO":?6&5/(B$N$-gram$BCj=PK!$K$h$kA4Cj=P<oN`?t$r<($9!#(B

\begin{table}[h]
\caption{$BO":?6&5/%G!<%?$NA4Cj=P<oN`?t(B}
\begin{center}
\begin{tabular}{|c|c|c|c|c|c|}
\hline
$BC18l?t(B &$BCV$-49$((BA&$BCV$-49$((BB&$BCV$-49$((BC&$BCV$-49$((BD&$BCV$-49$((BE\\
\hline
$B#50J>e(B&4,698&40,259&77,562&33,792 &64,562\\
\hline
$B#70J>e(B&1,031&11,784&38,374&9,194 &30,523 \\
\hline
$B#90J>e(B&252&2,401&10,900&2,165 &8,403 \\
\hline
\end{tabular}
\end{center}
\end{table}

$BI=(B3$B$h$j!"C18l?t$rA}$d$9$3$H$GA4Cj=P<oN`?t$,2<$,$k$3$H$,<($5$l$?!#(B

$B<!%Z!<%8$NI=(B4$B$KO":?6&5/(B$N$-gram$BCj=PK!$K$h$kCj=P%Q%?!<%s$ND4::7k2L$r<($9!#(B



\begin{table}[h]

\caption{$BO":?6&5/%G!<%?$ND4::7k2L(B}\hspace{12cm}{\scriptsize $B>e0L(B100$B%G!<%?BP>](B}
\vspace{-2mm}
\begin{center}
\begin{tabular}{|c|c|c|c|c|c|}
\hline
$BC18l?t(B &$BCV$-49$((BA&$BCV$-49$((BB&$BCV$-49$((BC&$BCV$-49$((BD&$BCV$-49$((BE\\
\hline
$B#50J>e(B&21$B!s(B&2$B!s(B&57$B!s(B&14$B!s(B&63$B!s(B\\
\hline
$B#70J>e(B&45$B!s(B&9$B!s(B&89$B!s(B&49$B!s(B&93$B!s(B \\
\hline
$B#90J>e(B&57$B!s(B&46$B!s(B&100$B!s(B&69$B!s(B&100$B!s(B\\
\hline
\end{tabular}
\end{center}
\end{table}

$BI=(B4$B$h$j!"Cj=P$9$kC18l?t$,B?$$Dx!"%Q%?!<%s$NCj=P@:EY$,8~>e$9$k$3$H$,<($5$l$?!#I=(B4$B$h$j!"L>;l$rCV$-49$($k!VCV$-49$((BB$B!W$r9T$&$HCj=P@:EY$,0-$/$J$C$?$,!"L>;l$HF0;l$rCV$-49$($k!VCV$-49$((BC$B!W$G$OCj=P@:EY$,NI$/$J$C$?!#99$K!VCV$-49$((BB$B!W!"!VCV$-49$((BC$B!W$h$j$b!"O"B3$7$?L>;l$d!V(BN$B$N(BN$B!WEy$NCV$-49$($r9T$C$?!VCV$-49$((BD$B!W!"!VCV$-49$((BE$B!W$G@:EY$,8~>e$9$k$3$H$,<($5$l$?!#(B

\clearpage


\subsection{$BN%;66&5/(B$N$-gram$BCj=PK!$K$h$k<B837k2L(B}

$BN%;66&5/(B$N$-gram$BCj=PK!$K$h$k<B83$r9T$C$?!#N%;66&5/(B$N$-gram$BCj=PK!$K$h$kCj=P%Q%?!<%sNc$rI=(B5$B$K<($9!#I=(B5$B$N>r7oFb$N!V(B1,2$B!WEy$ON%;66&5/(B$N$-gram$BCj=PK!$K$h$k<B83(B(3.2)$BFb$N!V<B83>r7o(B1,$B<B83>r7o(B2$B!W$KBP1~$7$F$$$k!#I=(B5$B$NCV$-49$(Fb$N!V(BA,B$B!WEy$OIJ;l$NCV$-49$((B(3.3)$BFb$N!VCV$-49$((BA,$BCV$-49$((BB$B!W$KBP1~$7$F$$$k!#I=(B5$B$N!VI>2A!W$O=EJ8J#J8$N%Q%?!<%s$r9=@.$7$F$$$k$H;W$o$l$kI=8=$r"~$H$7!"$=$&$G$J$+$C$?$b$N$r!_$H$7$F$$$k!#(B


\begin{table}[h]
\begin{center}
\caption{$BN%;66&5/(B$N$-gram$BCj=PK!$K$h$kCj=P%Q%?!<%sNc(B}
\end{center}

\hspace{-5mm}
\begin{tabular}{|c|c|c|c|}
\hline
$BCj=P%Q%?!<%s(B & $B>r7o(B&$BCV$-49$((B& $BI>2A(B\\
\hline
$B2F5Y$_$K!A$X$J$j!A$?$$$H;W$&(B  & 1&A & $B"~(B\\
\hline
$B$K$O<+J,$N!A$KBP$9$k8"Mx$,$"$k!A$N$OEvA3$N$3$H$@(B & 1 &A&$B"~(B\\
\hline
$B$rJQ$($F!A$F2?EY!A2?EY$b!A7+$jJV$7$?(B&2&A&$B"~(B\\
\hline
$BH`$KJ'$&$Y$-!A$rJ'$C$?!A>e$KNi$r(B &3&A & $B"~(B \\
\hline
N$B$K8~$1!A(BN$B@I!A(BN$B$K=1$o$l$?(B&1&B&$B"~(B\\
\hline
$B$N(BNNNN$B!A(BN$B?t$r(BN$B!A$X$H(BNN$B$7!A$H(BNN$B$7$?(B&2&B&$B"~(B\\
\hline
N$B$O(BN$B$h$j$?$H$$!A$H$7$F$b!A$O$J$$(B&3&B&$B"~(B\\
\hline
N$B$N(BN$B%@!<%9$O!A(BNN$BF|$^$G$K!"(BN$B$N(BN$B!A$K(BV$B$l$J$1$l$P(BV$B$^$;$s(B&1&C&$B"~(B\\
\hline
N$B$O(BN$B$D$N(BN$B$K(BV$B!A!"(BN$BHV!A$N(BN$B$K$O!A(BN$B$,(BVV & 2 &C&$B"~(B\\
\hline
$B$N(BN$B$G!A(BV$B$l$k!A(BN$B=5!A$G(BV & 3&C & $B"~(B \\
\hline
N$B$GH/9T$5!A(BN$B=5!A$G$"$k(B & 1 &D &$B"~(B\\
\hline
N$B$O!"(BN$BG/(BN$BF|$K!A(BN$BF|$K(BN$B$G!"(BN$BF|!A!"(BN$BF|$K(BN$B!A(BN$B$G3+:E$5$l$k(BN &2&D&$B"~(B\\
\hline
VN$B$K$h$C$F(BN$B!A(BN$B0l(BN$B$,(BV$B$l!A(BN$B$,(BV$B$l(BV$B$^$9(B&1&E&$B"~(B\\
\hline
N$B$O!V(BN$B!W(BN$B!A$N(BN$B$G(BV$B$l$k!A(BN$B$G!A(BN$B=5!A$G(BV&2&E&$B"~(B\\
\hline

$BIt$H!A$NItJ,!A9=@.$5$l$F$$$k(B & 1&A & $B!_(B\\
\hline
$B$N2r7h:v!A0l$D$N@oN,!A$N@oN,$X(B & 1&A & $B!_(B\\
\hline
$B$r;O$a$?$N!A$?$N$,!A$,#5!A#5;~(B & 2&A & $B!_(B\\
\hline
N$B$O(BN$B>e$G!A(BN$B?t$r(BN$B!A$X$H(BN$B$7(B & 1&D & $B!_(B\\
\hline
\end{tabular}

\end{table}

\clearpage

$B<!$KN%;66&5/(B$N$-gram$BCj=PK!$K$h$kA4Cj=P<oN`?t$rI=(B6$B$K<($9!#(B


\begin{table}[h]
\begin{center}
\caption{$BN%;66&5/%G!<%?$NA4Cj=P<oN`?t(B}

\begin{tabular}{|c|c|c|c|c|c|}
\hline
$B<B83>r7o(B &$BCV$-49$((BA&$BCV$-49$((BB&$BCV$-49$((BC&$BCV$-49$((BD&$BCV$-49$((BE\\
\hline
$B<eM^@)7?(B,$BAH$_9g$o$;?t(B3&913&1,805&1,935&1,105&1,291\\
\hline
$B<eM^@)7?(B,$BAH$_9g$o$;?t(B4&1,259&4,281&4,077&1,702&2,268 \\
\hline
$B6/M^@)7?(B,$BAH$_9g$o$;?t(B3&13&5&3&9&4\\
\hline
\end{tabular}
\end{center}
\end{table}

$BI=(B6$B$h$j!"6/M^@)$K$h$kA4Cj=P<oN`?t$,>/$J$/$J$k$3$H$,<($5$l$?!#<!$KN%;66&5/(B$N$-gram$BCj=PK!$K$h$kCj=P%Q%?!<%s$ND4::7k2L$r<!%Z!<%8$NI=(B7$B$K<($9!#(B




\begin{table}[h]

\caption{$BN%;66&5/%G!<%?$ND4::7k2L(B} \hspace{12cm}{\scriptsize $B>e0L(B100$B%G!<%?BP>](B}
\vspace{-8mm}
\begin{center}
\begin{tabular}{|c|c|c|c|c|c|}
\hline
$B<B83>r7o(B &$BCV$-49$((BA&$BCV$-49$((BB&$BCV$-49$((BC&$BCV$-49$((BD&$BCV$-49$((BE\\
\hline
$B<eM^@)7?(B,$BAH$_9g$o$;?t(B3&29$B!s(B&10$B!s(B&30$B!s(B&19$B!s(B&41$B!s(B\\
\hline
$B<eM^@)7?(B,$BAH$_9g$o$;?t(B4&34$B!s(B&14$B!s(B&37$B!s(B&29$B!s(B&46$B!s(B \\
\hline
$B6/M^@)7?(B,$BAH$_9g$o$;?t(B3&35$B!s(B(5)&60$B!s(B(3)&100$B!s(B(3)&66$B!s(B(6)&100$B!s(B(4)\\
\hline
\end{tabular}
\end{center}
\end{table}

$BI=(B7$B$h$j!"IJ;l$NCV$-49$($K$h$kCj=P@:EY$N798~$OO":?6&5/I=8=$K$h$k<B837k2L$HN`;w$7$F$$$?!#C18lNs$NAH$_9g$o$;?t$rA}$d$9$3$H$G!"@:EY$,B?>/$"$,$k$3$H$b$o$+$C$?!#6/M^@)$KCmL\$9$k$H!"Cj=P<oN`?t$O>/$J$$$,Cj=P@:EY$O9b$$$3$H$,$o$+$k!#(B

\clearpage

\section{$B9M;!(B}


\subsection{$BL>;l$NCV$-49$($K$D$$$F$N9M;!(B}

$BI=(B4$B!"I=(B7$B$h$jL>;l$rCV$-49$($k!VCV$-49$((BB$B!W$G%Q%?!<%sCj=P@:EY$,0-$/$J$C$?!#CV$-49$(8e$NCj=P%G!<%?$rD4$Y$k$HBgH>$,!V(BN$B$O(BN$B$N(BNN$B$K!WEy$NL>;l6g$NCj=P$G$"$C$?!#$=$N$?$aL>;l$dO"B3L>;l$rCV$-49$($k!VCV$-49$((BD$B!W$r9T$&$3$H$G@:EY$,8~>e$7$?$H9M$($i$l$k!#(B



\subsection{$BF0;l$NCV$-49$($K$D$$$F$N9M;!(B}



$BI=(B4$B!"I=(B7$B$h$jF0;l$rCV$-49$($k$3$H$K$h$j%Q%?!<%sCj=P@:EY$,8~>e$7$?!#$7$+$7Cj=P$7$?%Q%?!<%s$+$i0UL#$^$GM}2r$9$k$N$O!"F0;l$OJ8$NCf?4$H$J$kIJ;l$G$"$k$?$a:$Fq$J>l9g$,B?$$!#Nc$rNc(B13$B!"Nc(B14$B$K<($7!"3FNc$N86J8$b<($9!#(B

\begin{quote}
($BNc(B13)~~V/$B$F(B/V/V/$B$?(B

($B86J8(B)
\vspace{-4mm}
\begin{description}
\item $B$O$M(B/$B$F(B/$BHt$s(B/$B$G$$$C(B/$B$?(B

\item $B$7(B/$B$F(B/$BF($2(B/$B$F$7$^$C(B/$B$?(B

\item $BEv$?$C(B/$B$F(B/ $B51$$(B/$B$F$$(B/$B$?(B

\item $BO"$l(B/$B$F(B/$B9T$C(B/$B$F$/$l(B/$B$?(B

\item $B$D$+$C(B/$B$F(B/$BN)$C(B/$B$F$$(B/$B$?(B
\end{description}
($BNc(B14)~~N/$B$r(B/V/$B$F(B/N/$B$r(B/V/$B$?(B

($B86J8(B)
\vspace{-4mm}
\begin{description}
\item $BCN$i$;(B/$B$r(B/$BJ9$$(B/$B$F(B/$B4N(B/$B$r(B/$B$D$V$7(B/$B$?(B

\item $B;d(B/$B$r(B/$B$@$^$7(B/$B$F(B/$B6b(B/$B$r(B/$BC%$C(B/$B$?(B

\item $B4i(B/$B$r(B/$B8+(B/$B$F(B/$B@N(B/$B$r(B/$B;W$$=P$7(B/$B$?(B

\item $BCc$o$s(B/$B$r(B/$BMn$H$7(B/$B$F(B/$B$R$S(B/$B$r(B/$BF~$l(B/$B$?(B

\item $BLTJY6/(B/$B$r(B/$B$7(B/$B$F(B/$B7r9/(B/$B$r(B/$B32$7(B/$B$?(B
\end{description}

\end{quote}

$BNc(B13$B!"Nc(B14$B$O=EJ8J#J8$N9=B$$G$"$j!"86J8$r8+$k$H9=B$E*$K$bN`;w$7$F$$$k$,!"0UL#E*$KN`;w$7$F$$$J$$$b$N$,B?$$$H9M$($i$l$k!#(B






\clearpage

\subsection{$BN%;66&5/(B$N$-gram$BCj=PK!$N6/M^@)$K$D$$$F$N9M;!(B}


$BI=(B6$B$h$j6/M^@)$K$h$kA4Cj=P<oN`?t$,>/$J$+$C$?!#860x$OK\8&5f$G;HMQ$7$?%3!<%Q%9$,0lHLE*$KMQ$$$i$l$k=EJ8J#J8$r<}=8$7$?$?$a!"(B1$BJ8$r9=@.$9$kC18l?t$,>/$J$$$H9M$($i$l$k!#$=$N$?$a<B83$r9T$&:]$K!"!VN%;66&5/(B$N$-gram$BCj=PK!$K$*$1$k6/M^@)7?AH$_9g$o$;?t#3!W$NCj=P>r7o$rK~$?$;$J$+$C$?$H9M$($F$$$k!#Cj=P>r7o$rK~$?$;$J$+$C$?Nc$H$7$F0J2<$N?^(B6$BCf$NJ8$r<($9!#(B

\vspace{10mm}
\begin{figure}[h]
\begin{center}
\includegraphics[scale=1.0]{fig6.eps}

\caption{$BN%;66&5/(B$N$-gram$BCj=PK!$N6/M^@)$K$h$kCj=PNc(B1}
\end{center}
\end{figure}



$B?^(B6$BCf$NJ8$OC18l?t(B6$B$+$i$J$kJ8$HC18l?t(B8$B$+$i$J$kJ8$G$"$k!#?^(B6$BCf$NJ8$N>l9g!"N%;66&5/(B$N$-gram$BCj=P$r9T$C$F$b%Q%?!<%s$OCj=P$5$l$:!"O":?6&5/(B$N$-gram$BCj=P$H$7$F!V;d$N8@$&$H$*$j$K$;$h!W$,Cj=P$5$l$k!#<!$K0J2<$N?^(B7$BCf$NJ8$r<($9!#(B

\vspace{10mm}
\begin{figure}[h]
\begin{center}
\includegraphics[scale=1.0]{fig7.eps}

\caption{$BN%;66&5/(B$N$-gram$BCj=PK!$N6/M^@)$K$h$kCj=PNc(B2}
\end{center}
\end{figure}


$B$3$N?^(B7$BCf$NJ8$bC18l?t(B6$B$+$i$J$kJ8$HC18l?t(B8$B$+$i$J$kJ8$G$"$k!#$3$N>l9g$G$bN%;66&5/(B$N$-gram$BCj=P$r9T$C$F$b%Q%?!<%s$OCj=P$5$l$:!"O":?6&5/(B$N$-gram$BCj=P$H$7$F!V;d$N8@$&$H$*$j!W$H!V$K$;$h!W$,Cj=P$5$l$k!#(B



\clearpage

$B<!$K0J2<$N?^(B8$BCf$NJ8$r<($9!#(B

\vspace{10mm}
\begin{figure}[h]
\begin{center}
\includegraphics[scale=1.0]{fig8.eps}

\caption{$BN%;66&5/(B$N$-gram$BCj=PK!$N6/M^@)$K$h$kCj=PNc(B3}
\end{center}
\end{figure}


$B$3$N?^(B8$BCf$NJ8$OC18l?t(B6$B$+$i$J$kJ8$HC18l?t(B11$B$+$i$J$kJ8$G$"$k!#$3$N>l9g$GN%;66&5/(B$N$-gram$BCj=P$H$7$F!V;d$N!A8@$&$H$*$j!A$K$;$h!W$,Cj=P$5$l$k!#0J>e$G<($9$h$&$K!"K\<B83$K$*$$$F$ON%;66&5/(B$N$-gram$BCj=P$N6/M^@)$K$h$kCj=P$OJ8$r9=@.$9$kC18l?t!"9=B$Ey$K$h$j@)8B$r<u$1$F!"Cj=P?t$,>/$J$/$J$C$?$H9M$($i$l$k!#(B


$B$7$+$7N%;66&5/(B$N$-gram$BCj=P$N6/M^@)$K$h$kCj=P$OCj=P<oN`?t$,>/$J$$$b$N$NCj=P@:EY$O9b$+$C$?!#(B

\subsection{$BN%;66&5/(B$N$-gram$BCj=PK!$N<eM^@)$K$D$$$F$N9M;!(B}


$BN%;66&5/I=8=(B$N$-gram$BCj=PK!$K$*$1$k<eM^@)$G$O!"=E$J$C$?I=8=$,B??tCj=P$5$l$?!#(B
$BI=(B6$B$h$j!"!VAH$_9g$o$;?t(B4$B!W$K$h$kA4Cj=P?t$O!VAH$_9g$o$;?t(B3$B!W$K$h$kA4Cj=P?t$N!"Ls(B2$BG\Cj=P$5$l$?$3$H$,$o$+$k!#$7$+$7!VAH$_9g$o$;?t(B4$B!W$K$h$k<B83$GCj=P$5$l$?%G!<%?$rD4::$7$?$H$3$m!"=E$J$C$?I=8=$NCj=P$,!VAH$_9g$o$;?t(B3$B!W$K$h$kCj=P%G!<%?$h$j$b99$KB?$/8+$i$l$?!#$7$?$,$C$F=E$J$C$?I=8=$NCj=P$K$h$jA4Cj=P?t$NA}2C$K1F6A$7$?$H9M$($F$$$k!#K\<B83$K$*$$$F!VAH$_9g$o$;?t(B4$B!W$K$h$kCj=P$O8z2L$,$"$^$j8+$i$l$J$+$C$?$H;W$o$l$k!#(B

\clearpage

\subsection{$BCj=PIQEY$K$D$$$F$N9M;!(B}

$BK\8&5f$GCj=P@:EY$ND4::$r9T$C$?:]$K!"Cj=PIQEY>e0L$KC1J8Ey$N%Q%?!<%s$,B?$/8=$l!"IQEY2<0L$NJ}$K$O=EJ8J#J8%Q%?!<%s$,B?$/8=$l$?MM$K46$8$i$l$?!#$3$N798~$NM}M3$H$7$F!"0lHLE*$K=EJ8J#J8$N%Q%?!<%s$OJ#?t$NC1J8%Q%?!<%s$r=E$M$?$b$N$G$"$k$?$a!"C1J8%Q%?!<%s$,IQEY>e0L$K$I$&$7$F$b=8$^$C$F$7$^$$!"J#?t$NC1J8%Q%?!<%s$,=E$J$C$?=EJ8J#J8%Q%?!<%s$,2<0L$K=8$^$C$F$7$^$C$?$H9M$($i$l$k!#$=$N$?$aK\8&5f$G9T$C$?!"Cj=PIQEY>e0L(B100$B%G!<%?$KBP$9$kD4::$@$1$G$O!"IQEY2<0L$K8=$l$?=EMW$J%Q%?!<%s$,Cj=P$G$-$F$$$J$$$3$H$,9M$($i$l$k!#$3$NLdBj$r2r7h$9$k$?$a$K$O!"%G!<%?Cf$N$I$NIQEY$K$I$l$[$I=EJ8J#J8%Q%?!<%s$,=P8=$7$?$N$+$H$$$C$?J,I[L)EYEy$ND4::$r9T$$!"%?!<%2%C%H$r9J$C$?Cj=P$,I,MW$G$"$k!#(B


\clearpage

\section{$B$*$o$j$K(B}

\subsection{$B7kO@(B}

$BK\8&5f$G$O!"3FIJ;l$NCV$-49$($r9T$$(B$N$-gram$BCj=PK!(B{\small [1]}$B$rMQ$$$F!"Bg5,LO%3!<%Q%9$+$i=EJ8J#J8$N9=B$%Q%?!<%s$NCj=P$r9T$C$?!#(B

$B<B83$N7k2L!"IJ;l$NCV$-49$($K$*$$$F:G$b%Q%?!<%s$NCj=P@:EY$,NI9%$@$C$?$N$OL>;l$dO"B3L>;l$dF0;l$rCV$-49$($k!VCV$-49$((BE$B!W$G$"$C$?!#$7$+$7Cj=P$7$?%Q%?!<%s$+$iJ8$N0UL#Ey$rM}2r$9$k$N$O:$Fq$G$"$k$H;W$o$l$k!#$=$3$GJ8$N0UL#$r;D$9$3$H$r9MN8$9$k$H!"K\8&5f$G$OL>;l$dO"B3$7$?L>;l$rCV$-49$($k!VCV$-49$((BD$B!W$,:G$b8zN(NI$/%Q%?!<%s$rCj=P$G$-$?$H9M$($F$$$k!#@:EY$H$7$F$OO":?6&5/(B$N$-gram$BCj=PK!$K$*$$$F!"C18l$N$^$^$G9T$&!VCV$-49$((BA$B!W$h$jLs(B10$B!s8~>e$7$?!#(B

$BN%;66&5/(B$N$-gram$BCj=PK!$N6/M^@)$K$h$k<B83$G$O%Q%?!<%s$NCj=P?t$,>/$J$/$J$j!"NI9%$J7k2L$rF@$i$l$J$+$C$?!#$7$+$7Cj=P?t$O>/$J$$$b$N$N!"Cj=P$7$?%Q%?!<%s$O@0$C$?9=B$$G$"$C$?!#(B



\subsection{$B:#8e$N2]Bj(B}

$B:#8e$N2]Bj$H$7$F!"%3!<%Q%9$r$5$i$K3HBg2=$7Cj=P%Q%?!<%s<oN`$N=<<B2=$,I,MW$G$"$k!#$=$7$FN%;66&5/(B$N$-gram$BCj=PK!$N6/M^@)$NCj=P?t$N8=>]$r2~A1$9$k$?$a$N?7$?$JC18lC10L$G$NCj=PK!$N9M0F$,I,MW$G$"$k!#(B

$B$^$?!"K\<jK!$r1Q8l$KE,MQ$7$F$$$/$3$H$G!"1Q8l$HBP1~$E$1$?=EJ8J#J8%Q%?!<%s$rCj=P$9$kI,MW$,$"$k!#(B

\clearpage

\section*{$B;29MJ88%(B}

[1]$BCS86!"Gr0f!"2O2,!'Bg5,LO%3!<%Q%9$+$iO":?7?$*$h$SN%;67?$N6&5/I=8=$N<+F0Cj=PK!(B,$B>pJs=hM}3X2qO@J8;o(BVol.36(1995)\\

[2]$B;3ED!'(BN-gram$BE}7W$r1~MQ$7$?J87?%Q%?!<%s$N<+F0Cj=PK!$N8&5f(B,$BD;<hBg3XB46HO@J8(B(1998)\\

[3]$B:XF#!'Bg5,LO%3!<%Q%9$+$i$N=EJ8I|J8$NE}8l9=B$$N<+F0Cj=P(B,$BD;<hBg3XB46HO@J8(B(2000)\\

[4]$BB<>e!"CS86!"FA5W!'F|K\8l1Q8l$NJ8BP1~$NBPLu%G!<%?%Y!<%9$N:n@.(B,$B!V8@8l!"G'<1!"I=8=!WBh#72sG/<!8&5f2q(B,(2002.11)

\end{document}
