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BM25 TF*IDF
儲存副本
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Ceiling of saturation curve (phraseCeil)
Ceiling of saturation curve (phraseCeil)
3
運算式 4: "k" equals 10
k
=
1
0
4
Floor of saturation curve (phraseFloor)
Floor of saturation curve (phraseFloor)
5
運算式 6: "m" equals 0.5
m
=
0
.
5
6
7
技術支援
技術支援
"x"
x
"y"
y
"a" squared
a
2
"a" Superscript, "b" , Baseline
a
b
7
7
8
8
9
9
divided by
÷
功能
(
(
)
)
less than
<
greater than
>
4
4
5
5
6
6
times
×
| "a" |
|
a
|
,
,
less than or equal to
≤
greater than or equal to
≥
1
1
2
2
3
3
negative
−
A B C
StartRoot, , EndRoot
pi
π
0
0
.
.
equals
=
positive
+
