4 ms·
There are more complex models than the one you described. That query / item tower is cheap and cache-friendly. These tend to be used for high recall. You can
by mrfox321 5y ago
There are more complex models than the one you described.
That query / item tower is cheap and cache-friendly. These tend to be used for high recall.
You can echew those performance benefits in favor of neural networks that allow for the features of the query and item to interact. These models are goaling for high precision.
- Mehdi2277 5y agoTwo towers are not independent of neural networks. Most two tower models I encounter are neural networks for each tower with optionally a mixing towering/layer after the two. And sometimes it's not two but even more towers depending on how your features are grouped. I would consider two towers pretty much a necessity for large corpus retrieval as step 1 in any rec system with many items and many requests. Stage 2 or later models can be heavier and be whatever you like.