Ask HN: How technically complex are social media algorithms?
I'm curious about the technical complexity of social media algorithms, specifically the ones driving the feeds on TikTok and Instagram. How complex are these systems? Are they a standard recommendation system and the complexity comes from the large amount of signals being used? Is it a fancy neural network?
You can look at Twitter's recommendation system [here](https://github.com/twitter/the-algorithm) to get an idea.