What is Activation function in neural networks??

What is Activation function in neural networks??

Activation function are the mathematical equations that determine the output of the neural network. This equations are attached to all the neurons in the neural network and determines whether this particular neuron must be activated or not.

When we compare this Activation function with the brain it acts as the receptor  to send important information to the neuron.

The main function of the Activation function in the neural network is to extract all the important information for the given weights and features.

There are various types of Activation Functions some of the important Activation functions are mentioned below:

1.RELU ACTIVATION FUNCTION: The main advantage of  RELU ACTIVATION FUNCTION is that it does not activate all the neurons at the same time. Due to it all weights and biases are not updated .This makes neurons dead which never gets activated. As only some of the neurons are activated which contains important information it also reduces the problem of overfitting.

2.SIGMOID ACTIVATION FUNCTION: It is also called as logistic activation function. It is used for getting probability of the classes. So the probabilities vary between 0 to 1.It is mainly used for binary classification problems.

3.SOFTMAX ACTIVATION FUNCTION: It is similar to the sigmoid activation function it is also used for classification problems. It mainly classifies multiclass problems.

4.Tanh Activation function: It is also called as Hyperbolic activation function. It is similar to the  sigmoid activation function. The advantage of tanh Activation function is that for a negative input that the negative inputs will be mapped strongly negative and the zero inputs will be mapped nearly zero in the tanh graph.

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Here Winter comes.

Here Winter Comes!

Anticipating for it to come 

Pleasant days with tea of season

Waking late under the snowfall days

Covering the sun, Here winter comes.

 

Lovely weather awakening twilight.

Breaking the silence filling up the night.

whip up with those winter dresses, urging to revel in

Praise the winter! Here it comes.

Sleeping early to bathing late 

days just pass in all haste.

Let's love it all and bring those boots on!

Hey! Praise the winter! Here it comes.

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WHATSAPP DATA: IS IT SAFE WITH YOU ?

Image by Wikimedia

https://thelogicalindian.com/mentalhealth/private-whatsapp-messages-deepika-padukone-23909

Your chats, your text messages, call - Are they safe? Can it be read or heard by someone else?  

The answer here is NO!!

The simple text messages you send to someone can be intercepted by your own telecom operator such as JIO, AIRTEL etc. as your message first reaches the transmission tower and then to the recipient, also this information can be sent to the government if they ask the operator to do so.

The same goes for your E-mail too!

 

And, haven't you saw a scene in which a detective listens to a phone call to catch the person who committed the crime. This can happen in real life too. Some scammer or hacker may intercept your call and may listen to everything you talk to the other person.

Take care when you send something, for example, your ATM PIN in your messages or Email otherwise you know what!

After Deepika Padukone's WhatsApp Chats were leaked, the same question was for WhatsApp-Is it safe with you?

Here we have WhatsApp's privacy feature as the end to end encryption which means that no one from anywhere else can read your messages while it is sent to the other person personally be it WhatsApp employees too! 

Relief!Right! This can be taken for an example as the lock and key feature where you and your friend only have the key to the messages that you send to each other.

But, there are some ways by which your chats can be read by someone else.

• If you have enabled the auto-download media feature in your WhatsApp then disable it in the very first moment because someone can send you some virus in form of image or videos which will get downloaded and someone may hack your phone.
• If you talk in a group of some people where you are not the admin, then someone else can be added in the group where your chats get leaked-Hope, you all don't join any random WhatsApp groups.
• The Auto-backup feature. This downloads all your chats, media and stores it in a cloud or your phone and if someone gains access to your phone then they may have access to all your privacy.

This last reason has been predicted as the reason for Deepika Padukone's WhatsApp chats leak.

(though it is not correct to leak someone's private chats on media rather we don't talk about it here since our country has some privacy law in the Article 21 section 43A but I guess we aren't allowed to speak of it. As our government had banned the apps such as PUBG and more than 100 apps under the data violation act but here we go with our Indian Media showing someone's chats on big screens).

 

So, we request you all to disable the mentioned in the above three points otherwise your data is safe with you and now you can have a breath of peace.

Thank you

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