week 1:

Question 1

This is java programming build a recommendation system week 1 quiz answers. You will not need any other answers to solve this java programming questions.

First, You need to know about this java programming course that make you good in learning how to build a recommendation system.

   introduction...

Ever wonder how Netflix decides what movies to recommend for you? Or how Amazon recommends books? We can get a feel for how it works by building a simplified recommender of our own!

In this capstone, you will show off your problem solving and Java programming skills by creating recommender systems. You will work with data for movies, including ratings, but the principles involved can easily be adapted to books, restaurants, and more. You will write a program to answer questions about the data, including which items should be recommended to a user based on their ratings of several movies. Given input files on users ratings and movie titles, You will be able to make filtering to the movies or any data to make perfect recommender system, not movies only you can do music or literally any data...

You have many recommendations languages to help to code with it but java programing is the most used to do this, it has many algorithm theories making this easer. build a systems for recommendation is very known with java programming.

java programing build a recommendation system graded quiz answers..

1.The Movie class includes a toString method. Suppose another class is using the Movie class and has declared m as a Movie and initialized m. Which TWO of the following would use the toString method correctly to print out information about the movie m?

the answer is here:

   system.out.println(m.toString());

Question 2

   2.In the class FirstRatings, run the method testLoadMovies on the file ratedmoviesfull.csv. Note there are 3143 movies in this file. 
How many of the movies include the Comedy genre?
    the answer is here:   960


   3.In the class FirstRatings, run the method testLoadMovies on the file ratedmoviesfull.csv. Note there are 3143 movies in this file. 
How many of these movies run longer than 150 minutes?
   the answer is here:   143


Question 4
   4.In the class FirstRatings, run the method testLoadMovies on the file ratedmoviesfull.csv. Note there are 3143 movies in this file. 
What is the maximum number of films directed by one director?
   the answer is here:    23


Question 5
   5.In the class FirstRatings, run the method testLoadMovies on the file ratedmoviesfull.csv. Note there are 3143 movies in this file. 
What is the name of the director who directed more films than any other director? (There is only one.)
   the answer is here:   Woody Allen


Question 6
   6.In the class FirstRatings, run the method testLoadRaters on the file ratings.csv. Note there are 1048 raters in this file. How many ratings does the rater number 193 have?
   the answer is here:   193

Question 7
   7.In the class FirstRatings, run the method testLoadRaters on the file ratings.csv. Note there are 1048 raters in this file. 
What is the maximum number of ratings by any rater?
   the answer is here:   314

Question 8
   8.In the class FirstRatings, run the method testLoadRaters on the file ratings.csv. Note there are 1048 raters in this file. 
Which rater rated the most number of movies?
  the answer is here:   735

Question 9
   9.In the class FirstRatings, run the method testLoadRaters on the file ratings.csv. Note there are 1048 raters in this file. 
How many ratings does the movie “1798709” have?
  the answer is here:   38

Question 10
   10.In the class FirstRatings, run the method testLoadRaters on the file ratings.csv. Note there are 1048 raters in this file. 
What is the total number of unique movies that have been rated?
   the answer is here:   3143





cited for generate and engine building collaborative machine, using software programming techniques.
this course show you skills you need to solve any problem in programing language with some algorithms, by example doing a recommendation system for music, movies any way.  and with this course you will also be able to:

1. Read in and parse data into lists and maps.
2. Calculate average ratings.
3. Calculate how similar a given rater is to another user based on ratings. 
4. Recommend movies to a given user based on ratings. 
5. Display recommended movies for a given user on a webpage.

  some task  you will learn to solve anther time graph needed to wright with coding. anther courses help you explore high level tools to make development and help any web site developed  by adding new features. and computer science is very enjoyable capturing various information, it's like university to you help you practice getting natural job. you can look or search about java programing, and you can choose to start today or not developing android, but you have to make correct decision  and discover projects (written specialization, designed content), end.

Question In the class FirstRatings, run the method testLoadMovies on the file ratedmoviesfull.csv. Note there are 3143 movies in this file. How many of the movies include the Comedy genre?