I would like to get the name from a user. For example, “Hello my name is Adrian.” or just “Adrian”. What is the best way to extract this entity? For example, should I just add a lot more training examples, or is there a custom pipeline that helps extract names?

Spacy has PERSON which is a built-in name entity. It works well for common names.

What if I have some unusual names then? I made a .txt file and added lot of names in that and linked a lookup table in nlu data. Seemed to be working but is this a good way of doing it? I also want to add respective Id with the names. What kind of format we can add in lookup table file? Can we link other type of files in lookup table like excel or maybe something else?

Yes, lookup table is another option. It works well if you have unusual names. Names are difficult to extract in general so look-up table is a good way to do that. Look up tables can only be in form of list in the code or new line seperated .txt files. I don’t think adding the ID here would work.

Could I have a quick example of using the PERSON entity with spacy?

Your nlu.md should contain the PERSON as the entity and also you should have spacy in your config file. For example intent:greet_user Hello my name is [Adrian](PERSON) I am [John](PERSON) Hi, I am [Arya](PERSON)

So I have to use associated Id for the name as when a user says “How is John doing” I need to call multiple API’s to get information on John. So when NLU detects John as a named entity then I need to pass a user_id to my database server (basically pass user_id as a parameter in API call) where i get a json response of data on john! So how can I map an id to a name! Do you have any idea for this?

Maybe you could use store the names and corresponding IDs in a database and once you extract the name, use it to get the ID and in-turn use that for your API calls?

Okay like send the name as a parameter and get back the id in another API ? @srikar_1996

What is the best method for entity extraction for names?

Rasa Open Source

luofanghao (Fanghao) June 18, 2019, 9:14pm 14

also believe that a “input box” widget (like you input your name in web pages) can help.

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What is the best method for entity extraction for names?

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