This tool can create a 3D scatter plot representing a summary of the ratings available in a recommender system dataset.

You can use a built-in dataset or choose to upload a custom one. The code of this application runs entirely in your browser, so no private information is sent to remote servers.

The custom dataset should be available in a CSV file, where the first column represents the user, the second the item, and the third the rating, following a MovieLens-like format. Please use as field separator only one of the supported characters.

You also need to specify the rating threshold between relevant and irrelevant items for binarizing the dataset and the number of normalized users and items shown in the scatter plot, that is the size of a squared rating matrix in the transformed space as displayed in the visualization.

The resulting plot can be explored by interacting with the camera and also exported as a PNG file.