Repeated this 100 times, that's the plot. In these graphs, we performed a Principal Component Analysis on the movies, extracting the top 6 eigenvectors. Not much to see here, though. The following are four images of the data at different angles. The colors are derived from clustering the movies using k-means with 200 clusters.
Same color means same cluster, but the color for a cluster is arbitrary.
Here are the MatLab files used to generate these graphs. Pre-indexed data, filters, predictors, and evaluation . Each of the four parts is, for the most part, loosely coupled and interchangeable. A system block-diagram is depicted below. The Pre-indexed data is generated from the EachMovie dataset, which organizes the votes to make them fast to retrieve by user or by movie.