BÀI TẬP LỚN MÔN XỬ LÝ NGÔN NGỮ TỰ NHIÊN Tìm hiểu về bài toán phân loại văn bản và thu thập thông tin

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Bài tập lớn môn Xử lý ngôn ngữ tự nhiên
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3+F+620ST.BFA5^_O8++&=H0ST.BFA4U0P
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8,_<]+3$A+5"R6A+6+0@N0+4[08++&=3+
Sc0OIOv5G0*78H08++&=V+3H,_HwU*
0+_H00+6+4[0WJF\+62,_<]4A+JH2m><H2
>OF8++&=,N+l04*0POe+5a4PH0Z0c,W1.d00
060/8.BFA,_<]+3$A+44[03+Sc00+&`5&<
+'O=PO>OW+&'<00,C4"4U+'O=,",C4" 
$%&',%&'(
POQR) >3









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Bài tập lớn môn Xử lý ngôn ngữ tự nhiên
23 4-56(78
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.I+FA,_<]5R0+6+4P0P+=F00<<H00+FAV.H

00+6+V+3H00<Z0cV`05G!8./RST.BFA,
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WJF\H+V6+=2Z4[0&x0k&C+".I+6+V04[0
F+&B.N.I,_<]57O0-0]+&00+6+4[0F+&00
0ST.BFA+'8FN+&Sl0j0%4[0+h0c0.N.I,_<]5
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,_C+XH,-./00A+lSJ./+S.>5Z4P0Y+d0SdF
002]F\F;.BFA,_<]H00C800060/V0cH0k.BFA,y
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B+6+B-0+a00;+FA,_<]P05R0;.BFA
8]4[0WJF\+34=X.!0P+=0PB060/+d4*
+&[j8+&,A08+A+&+c0,V+0+6+5Mz&H0j+
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<]H+08]0PBV\+7+ON4=0P+=+7./4[0B+3
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$A0SJ./0ST.BFA,I+4*0@O*++h0c04U4[08++&=

+&,k_O+&TFI415$N.BFA4[0++78+&Sl+2+&'I+
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ST.BFA5X+7+C&x0P&C+"+&+c0O0j+V6FX
POQR) >4









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Bài tập lớn môn Xử lý ngôn ngữ tự nhiên
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+&00A0ZA{+&[23+45
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? o3/+)Z0P+=1&O*+Sl<A44q
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,708]0PB06+&'Z0c,"+&-+A1+I+Z+35
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80C+&j0,".I0P0C+&j05$-./H,N,_<]/232-
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D.+OE+&"+l5
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Bài tập lớn môn Xử lý ngôn ngữ tự nhiên
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FZV3+0P+=0%4[0SJ./4=F`0,+h[80@4"0@
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243,A0&23+4WJF\5$NO{WJF\81POHV4&O*++
FAHO*+23+44[04&P0P+*0O*+FN8V653P+*0
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.IDWHET4PWF+d0+=4[081FN8HFUD81FN8E4[00
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0lfS&O*+O+`0+a+784+IOy,WI+d0+=ON4P,
O*+81FN851FN8,_<]F<+,40PB<N08++&=
3+Sc02+&`OZ10@3.Sd8++&=OIOv410@
00+6+Z+&d0+35
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0C+&j04]5a4=0P+=.I4[0..+&ZO*++78[8+FA
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Bài tập lớn môn Xử lý ngôn ngữ tự nhiên
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5
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V6+4[0B0@4"+a+10@+FA+,4PHPFZA+
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4"H000`Fd,00SJ./00+&`Sl0@00j+&ZFƒ+&810C8H
,O*+SlV-+d0+3,",A0<ZSI4=0@4"5
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+0-0@O*++FA„…5$"Oe+Vt+7+H+a4=<;O8(00PO
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4"5
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+'+&I+O03<T+Z0@0@4"5$-./H0@4"+6FA+VZ00+a
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O*+OIDV4PO*+Sl0@4"0P+=+*0O*+,j+0@01810C8E5
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S+Tj+FH8![8,N0@4","B4*,7+H00S,7+Sl,+dZ
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Bài tập lớn môn Xử lý ngôn ngữ tự nhiên

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+78+6+Dsp&O+M>+&>,FEFO*++&B<+V
8.BFA,_<]5 +0@3+78+&,,A0+'O&00+FA
+&O*++78[800+FA0PS}+>O*+4"VA4P5R04"VA
0P+=FO*++&,CO*+,_<]5
4"VA4,FO*++&,CH<+Sv4&00SF74=+'O
&4e0+&0@01+&,C4PHS4PSS,N004e0+&0@00+FA
0PS}4=+'O&00+FA8![8C+,N01+&,C4P5&<+H
O6'0@<+,N<+^>&0b>5ZH<+++78
+6+F<+4[08++&=TOc04*05:l,N<+^>&0
b>H01+&,C4,F+78[800AO5,N<+++78
+6+H01+&,C4,0P+=FO*+01,_0PBu5A+lSv+'O
0081+-0Bu0@01+&,C4=+'O&4e0+&0@P5
POQR) >12

2
0
1
1
2
Bài tập lớn môn Xử lý ngôn ngữ tự nhiên
++78.BFAH0j++X0lf+'OV3O00.BFA0-W05
&00+&X[8V0H0j+V=O+&4=W>OO*++6+0P+&O*+
+A8+V65++78+6+HV3+2]0-W0+X4[02+1OH
+6+X0j+Ol+'OV3OO*+00+4l0-W0,NO*+
+6+4e0<A+4[04,5^4P0j+Sv+d0`+6+8![8C+
+a00V3+2]0@8n8WJF\+&N04P530j+SSP,N00V=A
+lV0H0j+Sv+C&x+&*.00+&,C0ST.BFAH
O*+8n8+'OV3O+d00C+F4=FO+]OUO*++&,CHF01•4=+'O&
01+&]FXD4[0<3+43,NVAO+&-0WC++6+E4e0<A+F,NO*+01
•4e0<A+5&++78+6+HO*+8n8+'OV3OxO+'O&O*++FA
OX.!405R0A+l++78+6+DsMSS+>OSE4[0SJ
./4=++7800+FAFZ24300Z0&z&5$C4",N++78
+6+F,A0WJF\00,_<]0P*.FZ2*+I4300,_<]
4[0SJ./+&N04P5'4&O*+O6'++0++78+6+
095=ZH,A0++78+6+F2+&'WJF\Fe8FIH,NWJF\4
,,4&<;O,kFe8+-+FIZ05
+00=4h+&,C+>O*+03F[00PS}xO+_+-
8![80@+FA4U74[05
POQR) >13
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2
0
1
1
2
Bài tập lớn môn Xử lý ngôn ngữ tự nhiên
$A0++78+6+0P+=4[04u0<C+0cO*+FI+6+
,-./V=,_<]H']H1O+555ZHT410j+0Y4"
07843,A0++78,_<]<T,_<]FO*+FI+6+O8+c0
+d0A,Vt+7+WJF\4]5RP+=COI&x00Vt+7+
0%0P+=4[08./0++78+6+48+A5
R0Vt+7+++78+6+0P+=4[00&+FI(
? R0Vt+7+09

? R0Vt+7+0P8./+&-+A1+I5
PO4+Z<;O00Vt+7+.d+&Z008+c0+7++,
+`0+&"+l5PO+c0lf++78+&+c0<x00Vt+7+8
./+&-+A1+I4=4[000V3+2]+l+5
B1! 2 ! $C D
H00+6+44[08++&=OIOv,"SlF[,0@
3F+as+>&>+5s+>&>+4U+&T+F+&BH2]F\,4e0<A+F+
7+6+0P,+AF[5[-0+&+1OF00+6++7
4[08![8,N0X.!5:PFF\.0@00Z0c0ZS1
+&  00  Fu ,d0   V  8  .B FA  DG+)EH  +&-0  WC+  +6 +
Dsp&O+bW+&0+EH++78+6+Dsp&O+M>+&>,FE5
MC+"00888++78+6+4[08++&=,V3+2]O
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4=4&\+T0<]00003F[W„…53+4;\&x+C+0]
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R3F[04[0SJ./+&<*<34h0@8n8+'OV3O F>HT
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Bài tập lớn môn Xử lý ngôn ngữ tự nhiên
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+7+BOZ+]*.0@+FZ5R0+7+B+X4[0`F
00+7+B4Uf0YO/000+aV5:=,A0++784[0+d0A
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R0[04=O0@Vt+7+F(
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+=A00+7+B0@+FA„…5•lO6' F>H0j+
U00+FA<T+7800+7+B5+&Z+d0+3H4=OV04[0
9+&,A0<=.+FZ5FAG4[0<=.<TO*+ M2P;P
2,N00+6Slc,NO{0"F+&`Slc,N+a+7+B0/
+=5&+&X[8HOF+hS6+7+B4[04u4=W04
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Bài tập lớn môn Xử lý ngôn ngữ tự nhiên

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+&O{<<5FA#
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H+7+B_8A9HK8`WC+A,NW0SC+
FF[+F5H55FA#

H+7+B_8A9HK8`WC+A,NW0
SC+FF[+F5H55
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00+7+B5^V+d0A,A081+-001+&,C+Sv+4[0O*+,>0?
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,N00,>0?+4I.A000+FA+>O*++Z094P53+2]+Sv+
4[0O*+.S000+FA0P2Ao9,N01+&,C4U4&5C+
ZH00+FA4PSv4[0Sf8W38+>+&'+d]O.,Sv<0f+TO*+
6[4P5
:=+-,>0?+<=.O*++FAH00+a&Z<A++&+FA4[0+h
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D
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Hình 3. Đồ thị biểu diễn các vec-tơ của bài báo D
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Hình 4: Đồ thị biểu diễn quan hệ giữa truy vấn (query) và các tài liệu
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2
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Bài tập lớn môn Xử lý ngôn ngữ tự nhiên
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25AL85
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&`Sl0@O*++7+B0P+=4[0W04+>"005R0+38
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Sl8n8WC8WY4]4[0SJ./5=ZF<=A0@00,>0?+0Y
+;+IVAOB5&+d0+3H00,>0?+3OV4[0F+&B44@.
.+-+0@0j5$-./H0P+C+0]+7+BH+FAG0Y4"07843
+7+BH,7V60+3+8]F+&B+C+0]00+6Slc,N,>0?+
+c,N+FA5
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O*++A8+4U4[00=4h5A8++&],"O*+.S000+FA,N
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O/0H+A8+0=4h0%0]+A004e0+-+X0@,A0SS00
,>0?+5t+7+0&O*+8n8+-+0C874[0,NB+&,C
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09SV0PSd+4h0@%d5:"4P&C+0P+=W]&+&+d0+3H,-./
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2
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1
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2
Bài tập lớn môn Xử lý ngôn ngữ tự nhiên
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F[00+7+B+&O*++FA81Sl095$N00+&X[8
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0PO*+Sl4=OS(
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0PSd+d4"0Y+&I+4*5 Z0I]+7++-0FtEH'0%00P
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(Q( ( (ghU;PENUME8MJE0O
RP+=P+4lOI&xH00Z0c41,"sMV+
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+l0P+=8./00Fu,d0+&+c0000WJF\4=+'OV3O,++78
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:=0P+==FO+3OI?&0P+=8./0WJF\++78
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OI?&5
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OISvD3004,4"D5P4[0+d0A<T8n8SS,N
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Hình 5. Mạng nơ-ron: toán tử AND (a) và toán tử OR (b)
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Bài tập lớn môn Xử lý ngôn ngữ tự nhiên
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g4I4+ZH0PSd+_+&0@00V3+l+d00C+FV-0I+
00_,N00+FA8![8,,A0]O+&300V3+B00_,N
+FAFV68![85g4I+cH2+&'CFA+I&V3+l
B00+7+B,V-0I+00_,N00+FA8![85
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+N+FA+&Z0!0@4"5
R0CFA0PV]_N,A0OT&*004lWJ0@00
OI?&H4e0<A++&Fu,d0++78+6+5

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Bài tập lớn môn Xử lý ngôn ngữ tự nhiên
h3BP)+a+I*BIBIMk()P*&+D-(^CD;DDE-+(+()
h324P-RW()Pc^5_(`a(-+A()+,-
3$A+FO*+&A;„…H4e04=O<2++<*4e0
+&+3$A+,"Oe+B1OHBu,B885G4PH0j+8]+3
Z0c4e04=O0@+3$A+4=0P+=0P4[0BN
Z0c0/+=,",_<]+3$A+5
B1!72?:>O
B+>7P78:>
&+3$A+H0%+&00,_<]+3$A+H+0P+=+C1
FO*++8V2+&`5&V-88HO{+34c4*0F78H,+0P
+=8+A4[0001+&0]+3P0%+&,_<]„…5
Q((((1EL&
B1O0-FOe+1O0@6B5IS+FI8]Z0cV-
0I0@6B+3$A+5:PF,'+&Z+d0+3H00c./FZ243

+3$A+.0+7+HF+&BX+,yFI1O+.I,_<]HS
4PON+300++0WJF\5){+30-FO*+1O+3+,4[0FI
+O*+0/O+&,_<]5
Q(((( 1EL&l8
3Wn+,"Oe+Bu+'1A;Lm?2.2.l8„…5
d0&+0P+=+C&x4,B1O+C8C+F1O,+'+V60P
uD,-./000B04c&Z&vE5Z0%0PB+30P
uD,-./3E5
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? R0+3+dP0PuD,-./2H0HHiE0P+=4[0
.!4=`+ZSd,7+HA+[H0P+=4[0.!O*++a5
? R0+30PuV6.!4=`+ZSd,7+HA+[D,-
./nH<2EO0Y4[0.!,N+00F<*874=0C
+Z+a0PuT<7005V6+=P<2O0Y
0P+=PH0PB+a<2j(
? R0+3<]+1V6"0PuO0Y.!4=V3+[8+I
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oAo+dPV60Pu0P+=+I++a0PuF
oAo5
Q((((Q1EL&
-0IB88<;OB2+f00C+I+aH0C+I015$+0P
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