Table 1:
Biosignature and OCR recognition results (Unit: counts of patterns correctly recognized in one test dataset. OCR: each test dataset contains 100 characters. BIO: biosignature recognition task, each test dataset contains 20 patterns.)
Gray level to original data
Transfer function (learning rate)
Hybrid sigmoid-logarithmic
1
/
(
1
+
e
x
p
(
−
ℎ
)
)
1
/
(
1
+
e
x
p
(
−
5
ℎ
)
)
(
𝜂
=
0
.
0
3
)
(
𝜂
=
0
.
0
3
)
(
𝜂
=
0
.
0
0
1
8
)
BIO
OCR
BIO
OCR
BIO
OCR
1 (original)
20
64
20
79
20
63
1/3.16
20
58
6
48
13
65
1/10
20
58
1
25
1
37
1/31.6
20
47
1
25
1
25
1/100
19
32
—
—
—
25
1/316
17
26
—
—
—
—
1/1000
17
25
—
—
—
—
1/10000
17
25
—
—
—
—