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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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