It's various measures of recall rate. Recall@500 means what percentage of the time does the target document show up in the top 500 results from the retrieval system.
But the base model, when its trained on the whole internet, will have some extreme biases on topics where there's a large and vocal group on one side and the other side is very silent. So RLHF is the attempt to correct for the biases on the internet.
Seeing a lot of folks criticize the claim about needing side projects/GitHub. I think if you already have experience it doesn't matter too much, but if you have a nontraditional background/lacking experience, it is totally the difference between an offer and never hearing back. I've experienced this from both sides of the table.
But the bigger thing is generally how advanced the existing finance infra is. Lots of countries have really slow bank transfers, processing a refund requires handing in physical paperwork, etc. Stripe relies on having underlying bank infra that's somewhat functional.
As far as the EU, the regulatory environment is manageble, but the payment landscape is very different from the US where Stripe originated. For example, in Germany only around 30% of users pay for stuff online via card [https://askwonder.com/research/german-market-what-s-breakdow...], that means for every country a ton of new payment methods have to be added for the service to be actually useful.
Coverage is spotty. It's crazy how much people here underestimate the lack of willingness of many business to use these systems. I live 45 minutes away from SF and recently got a haircut at a decently popular place and it was cash only. Adoption of new technology by small businesses is really slow.
I agree with the sentiment about slow adoption, but in this case, it might not make sense to switch.
If it's decently popular and is fully booked, going cash only would reduce their costs and either give them healthier profits or let them charge less. Most businesses accept cash and card, so they likely already have the daily task of taking money to the bank or having it picked up by a secure truck.
They already do this actually, but the coverage is pretty spotty. There are still restaurants that don't have websites and you're asking them to set up a digital booking system through Google. It's just not going to happen. Also, I see this tech as more of a way of training up their AIs on tasks that provide a bit of value while they wait for people to connect to the official booking APIs and such.