MovieLens

And you just have to look for the cues in what they're doing.

And circling back to what you said about performing user studies and distilling what users might perceive as useful and what not, your name has been associated, I guess, the most with the GroupLens research group and especially with MovieLens and the MovieLens data sets being, I guess, some of the most widely used data sets in REX's research.

If you look on this long history of the GroupLance group, which has been doing more than just running MovieLance, what do you think has been going well and what has been going not so well? Or which objectives have you been able to reach with this project? And yeah, how does this also tie possibly into the new project that is called PopRox?

That's a big question, but let me try to... offer three answers i think one of the things that we have done remarkably well in the group from its beginning to today has been to pivot our research to what's needed as the field evolves if you look at the early group lens papers they were mostly algorithmic and you know when you introduced me you said oh he's known for algorithmic work If you ask how many algorithms I've done any significant changes in in the last 15 years, it's probably none.