likes = {'rajat': {'music', 'x-men', 'programming', 'hindi', 'english',
    'himesh', 'lil wayne', 'rap', 'travelling', 'coding'}, 'steve': {
    'travelling', 'pop', 'hanging out', 'friends', 'facebook', 'tv',
    'skating', 'religion', 'english', 'chocolate'}, 'toby': {'programming',
    'pop', 'rap', 'gardens', 'flowers', 'birthday', 'tv', 'summer',
    'youtube', 'eminem'}, 'ravi': {'skating', 'opera', 'sony', 'apple',
    'iphone', 'music', 'winter', 'mango shake', 'heart', 'microsoft'},
    'katy': {'music', 'pics', 'guitar', 'glamour', 'paris', 'fun',
    'lip sticks', 'cute guys', 'rap', 'winter'}, 'paul': {'office', 'women',
    'dress', 'casuals', 'action movies', 'fun', 'public speaking',
    'microsoft', 'developer'}, 'sheila': {'heart', 'beach', 'summer',
    'laptops', 'youtube', 'movies', 'hindi', 'english', 'cute guys', 'love'
    }, 'saif': {'women', 'beach', 'laptops', 'movies', 'himesh', 'world',
    'earth', 'rap', 'fun', 'eminem'}, 'mark': {'pilgrimage', 'programming',
    'house', 'world', 'books', 'country music', 'bob', 'tom hanks',
    'beauty', 'tigers'}, 'stuart': {'rap', 'smart girls', 'music',
    'wrestling', 'brock lesnar', 'country music', 'public speaking',
    'women', 'coding', 'iphone'}, 'grover': {'skating', 'mountaineering',
    'racing', 'athletics', 'sports', 'adidas', 'nike', 'women', 'apple',
    'pop'}, 'anita': {'heart', 'sunidhi', 'hindi', 'love', 'love songs',
    'cooking', 'adidas', 'beach', 'travelling', 'flowers'}, 'kelly': {
    'travelling', 'comedy', 'tv', 'facebook', 'youtube', 'cooking',
    'horror', 'movies', 'dublin', 'animals'}, 'dino': {'women', 'games',
    'xbox', 'x-men', "assassin's creed", 'pop', 'rap', 'opera',
    'need for speed', 'jeans'}, 'priya': {'heart', 'mountaineering',
    'sky diving', 'sony', 'apple', 'pop', 'perfumes', 'luxury', 'eminem',
    'lil wayne'}, 'brenda': {'cute guys', 'xbox', 'shower', 'beach',
    'summer', 'english', 'french', 'country music', 'office', 'birds'}}
User based filtering:Recommendation system