FilmMissingIndices.txt:  row i  contains the film in the first column (1 to 500) and the user in the second column (1 to 3000).  The ith row of the solution file should then contain the prediction for the corresponding ith row of FilmMissingIndices.txt
FilmPositiveNegative.mat contains a 3000x500 matrix for the 3000 users and 500 films. The positive indices on row i contains the films that user i liked and the negative indices are the indices of the films that user i did not like.