I would suggest getting your feet wet with HuggingFace Spaces free/Pro plan to get started & then their APIs once you get the hang of setting up things there. After that you can start with setting up LangChain pipelines or direct vector DB queries for which sort of columns or SQL queries to formulate(for the latter).
As for the former classifier you can try doing zero-shot classification between n number of categories + others. Models like Flan-T5/T5/Flan-UL2/DistillBART(also ~7B-40B param LLMs can also do this but would be overkill).
As for the former classifier you can try doing zero-shot classification between n number of categories + others. Models like Flan-T5/T5/Flan-UL2/DistillBART(also ~7B-40B param LLMs can also do this but would be overkill).