Activation Functions
Complete the activation functions below:
import numpy as np
class Activation:
def sigmoid(self,x):
y = 1.0 / (1.0 + np.exp(-x))
return y
def tanh(self,x):
y = (np.exp(x) - np.exp(-x)) / (np.exp(x) + np.exp(-x))
return y
def relu(self,x):
if x >= 0:
y = x
else:
y = 0
return y
def leaky_relu(self,alpha,x):
if x >= 0:
y = x
else:
y = alpha*x
return y
def elu(self,alpha,x):
if x >= 0:
y = x
else:
y = alpha*(np.exp(x)-1)
return y
activation = Activation()
print(activation.sigmoid(10))
print(activation.relu(20))
print(activation.tanh(-1))
print(activation.leaky_relu(0.1,-1))
print(activation.elu(0.1,-1))
0.9999546021312976
20
-0.7615941559557649
-0.1
-0.06321205588285576
Faces
Print out all the images’ name and the files’ length.
import os
def listdir(path, list_name):
for file in os.listdir(path):
file_path = os.path.join(path, file)
if os.path.isdir(file_path):
listdir(file_path,list_name)
elif os.path.splitext(file_path)[1]=='.jpg':
file_name= os.path.split(file_path)[-1][0:-4]
list_name.append(file_name)
'''
def writefile(list):
f=open("faces.xlsx","w+")
for i in list:
f.writelines(i+'\n')
f.close()
'''
path="face"
list=[]
listdir(path,list)
for i in list:
print('\n'+'\"'+i+'\"'+'\n')
#writefile(set(list))
f=open("length.txt","w")
print("\nTotal files number: "+str(len(list))+"\n\n")
f.writelines("Total files number: "+str(len(list))+"\n\n")
f.close()
"2370961440_6bc8ce346c"
"2956581526_cd803f2daa"
"303808204_1f744bc407"
"3152653555_68322314f3"
"92053278_be61a225d2"
"343583208_e986824d77"
"299733036_fff5ea6f8e"
"57635685_d41c98f8ca"
"10comm-decarlo"
"809285949_6889026b53"
"1383023626_8a49e4879a"
"1084239450_e76e00b7e7"
"529447797_0f9d2fb756"
"2328398005_d328a70b4c"
"2173711035_dbd53b4f9f"
"2046713398_91aaa6fe1c"
"1878519279_f905d4f34e"
"2210514040_6b03ff2629"
"2322901504_08122b01ba"
"2327253037_66a61ea6fe"
"1549040388_b99e9fa295" "363149951_8be04dc6c0" "1198_0_861" "2382SJ8" "96063776_bdb3617b64" "97308305_4b737d0873" "110276240_bec305da91" "297448785_b2dda4b2c0" "137341995_e7c48e9a75" "144044282_87cf3ff76e" "252418361_440b75751b" "262007783_943bbcf613" "152601997_ec6429a43c" "0805personali01" "348272697_832ce65324" "362167809_d5a5dcbfdb" "2633371780_45b740b670" "2902760364_89c50bde40" "3298715079_5af7c78fcb" "3074791551_baee7fa0c1" "2902323565_100017b63c" "2795838930_0cc5aa5f41" "2722779845_7fcb64a096" "2711409561_a0786a3d3d" "3273658251_b95f65c244" "3264867945_fe18d442c1" "2647088981_60e9fe40cd" "3325611505_ddc7beffa1" "deeny.peggy" "matt-mathes" "person" "person_TjahjonoDGondhowiardjo" "3855944735_e252959937" "3856149136_d4595ffdd4" "3872768751_e60d7fdbd5" "3638950581_3387685d3a" "3790616528_297c0ac935" "3718903026_c1bf5dfcf8" "3574737496_6ee8207045" "3689162471_5f9ffb5aa0" "3646828311_bfeb429ef7" "person-7" "3534189272_8ef88ba368" "3555944509_7b477069c6" "britney-bald" "3461016494_56cce9c984" "3534188114_2108895291" "3362762930_24f76cb89c" "personalpic" Total files number: 69
