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• Face Lock in Smartphones: Nowadays smartphones come with a new security system of using face
                 recognition to lock and unlock phones. It uses the front camera to detect the features of the face and
                 save it. Once it is stored, every time to unlock it matches the input face with the features already stored
                 in it.
                 • Self-driving Cars: CV is used in self-driving cars to recognize lamp posts and to tell the difference between
                 pedestrians and stop signs. Image classification technique allows self-driving cars to identify where the road
                 is and what all obstacles are, when to stop or keep driving on the road. Companies like Tesla and Google are
                 building self-driving cars.

                 • Unusual behavior Detection: CV is used to identify faces in CCTV footage and also in real time at airports to
                 help identify and track unusual activities or behavior.


              Natural Language Processing (NLP)

              Natural language is the language used by humans to communicate with each other by writing or speaking.
              Natural  Language  Processing  is  the  domain  of  artificial  intelligence  where  a  machine  uses  algorithms  to
              understand, analyse, and interact with humans using natural language. The types of data that can be used
              by NLP are text and speech. It combines the fields of linguistics and computer science to decipher language
              structure and provide guidelines to make models which can comprehend, break down and separate significant
              details from text and speech. For example, Twitter uses NLP to identify and filter out terrorist languages in their
              tweets. Amazon uses NLP to understand customer reviews and improve user experience.





















              Some of the real-time applications of NLP are:
                 • Autocorrect Feature: It uses NLP to give you suggestions and correct your spellings in a document. Google
                 also has the feature of auto-sentence completion, where it uses AI to predict the next word to complete
                 the sentence. For example, if you write “Good”, based on the system clock it will predict “Morning” or
                 “Afternoon”.
                 • Plagiarism Checker: It uses NLP to search through the web and find any cases of published documents that
                 may match your work line by line and warn you for the same.
                 • Email  Filters:  Your  mails  in  Gmail  accounts  are  categorized  under  three  heads  “Primary”,  “Social”  and
                 “Promotions”. It uses NLP to identify certain phrases from the mails and categorize them. The mails marked as
                 “Spam” also follow the same concept.
                 • Chatbots:  They  are  software  applications  that  use  NLP  to  communicate  with  humans  using  text  to
                 speech.  Smart  assistants  like  Alexa  and  Siri  understand  the  speech  pattern  of  the  instructions  and
                 execute them.





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