???? ONLINE

1
???? ONLINE
????
????
Littlestone 1988
1. ?? ???? ?????? ???? ???????????
2. ???? ???? ??????????? ?? ????? ( ) ????? ??
???? ?"? ???? ?-
2
???? EXACT
????
????
Angluin 1987
EQEquivalence Query
????? ???????
1. ?? ???? ?????? ???? ???????????
2. ???? ???? ??????????? ?? EQ ????? ???? ??
?"? ???? ?-
3
????? 1
2
3
4
5
1
????? ????? ONLINE
????? ?????
????? ????? EXACT
????? ?????
4
???? ???? ????? C ????? EXACT ??"? ???? ?????
?? C ????? ONLINE
????? ??? A ???????? ????? EXACT ?- C
????
????
???? ?? A
?? ?????? no ????? ?? ?????? ? A
???? ???...
5
???? ?? ???? ????? C ????? EXACT ??? ???? ?????
?? C ????? ?????? ????????
????? ??? A ???????? ????? EXACT ?- C ??? ????
poly(s,sizeC( f ))
????? ???????? B ????? ??? S ???? ??
???????
???? ?? A ??? ??? ?-A ???? EQ(h)
????????? ???? ????? ????? ?- S ?"?
???? ?
??? ???? ?????? ??
???? ? A ???? ?????? ?????? ???????? ?-
6
ONLINE
EXACT
EXAMPLE
7
????? 2 ??? ??????? Term
8
???????? ?- Term
Input S
Lx1,x1,x2,x2,,xn ,xn
EQ(L) ? a If a YES return(L) Remove l from
L if l(ai)0
???? EQ
???
????? ?????? Proper
9
????
???? i
?????? ?????? ??????
?? ???? ????? ????? ?-f
???? ?- h ????? ????? ???
10
???? ???????? 1 ?? ???? ????? C ?-EXACT ???? T
?- q ?????? ??? ???? ????? CD ???????? ???? O(T)
?- q ??????.
???? ???????? 2 C ????? ?????? ?-EXACT ??"? CD
????? ?????? ?-EXACT .
???? ?- CD
????
???? ?- C
11
???? ??????
??? C ????? ???????? ????????
???
???? ????????
?? ??? gi ????? ?????? ???? TG.
?? C ????? ?????? ?-EXACT ???? T(n) ?-q(n)
?????? ???
???? ?????? ?-EXACT ???? O( T(t)q(t) t TG )
?- O(q(t)) ??????
???????? ??????? ????? ??????? ????? poly(t)
12
????? ??? A(n) ???????? ?????? ?- C
????? ???????? B
13
????? 3
??? ?????? Term
???? EQ
???
14
WINNOW
??? P ???? ???????? ???????? (??? 3) ?- N
???????? (??? 4)
15
?????? ??????
?????? ??????
????? ?-
?????? ??????
?????? ??????
???? ???????
16
???? ?????? 3
??? ?????? Term
???? EQ
???
17
????? 4 ????? ????? (DL) Decision list
????? ????? ?????? ????? ?????????

????? ????? ????????? ?????.
??
??? ?? ???? ????? ????? ????????? ????? ??? ????
????? ????? ?????
18

???? ???? ????? ????????? ?? ??? ??????

????
???? ??????
19
????
???? ??????
?? ??????? ?- ??? ?-
???? ????? ?- ??? ?-
????? ?? ?? ???? ?-
????? ????? ?? ?-
????? ??????? ??????
20
????? ?? ??????

???? ?? EQ ???? ??? ???????? ???? ??-
??? ???? ?- EQ ??? ??? ?????
???
21
???? ???? ????? DT ?-EXACT ????
????????? ????? log s-DL ?????
???? ???? ????? DNF ???????? ????
????????? ?????
?????
22
??? ????? ?? ???? ?????? ???????
???? ???? ????? ?? ????? C ?-EXACT ?? logC
?????? ?????? (???? ????????????).
????? ?????? ??????? S ?????
23
0
000000000000011111111
24
????? DNF
DNF ????? s
???? ???? ????? DNF ?-EXACT ??
?????? ?????? (???? ????????????).
25
???????? PERCEPTRON
26
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27
???????? PERCEPTRON
28
???? PERCEPTRON
?????
29
???? PERCEPTRON
?????
30
???? PERCEPTRON
?????
31
????? ????????? PERCEPTRON
?? ???????
The Department of Computer Science is the second
largest academic unit in the Technion, with
about 1,300 under-graduate students ( about
one-eighth of the total number of Technion
students) and more than 200 graduate students.
It comprises about 50 faculty members of
international repute with expertise in a wide
variety of fields. It is the largest department
of computer science in Israel and supplies the
Israeli hi-tech industry with the highest
caliber manpower
???
Spam 1 Not Spam -1
????? ??????
Attributes
32
Spam 1
Not Spam -1
33
Expert Advice
?????? n ??????
Exp 1
Exp 2
Exp 3
ME
Exp n
34
Weighted Majority Algorithm
1.
Exp 1
2.
Exp 2
Exp 3
3.
3.1.
Exp n
3.2.
35
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(No Transcript)