Very inefficient. Like wildly so. Specifically if you have a very small database and you preprocess it with their techniques, the resulting database is petabytes in size. But the results are very beautiful.
There are no obvious ways to improve on this work, so it is not a matter of engineering. We really do need another breakthrough result to get us closer to practicality.
There are no obvious ways to improve on this work, so it is not a matter of engineering. We really do need another breakthrough result to get us closer to practicality.