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Rasa NLU: Open-source bot tool for natural language understanding

rasa.ai

1–10 of 23 posts

Re: Rasa NLU: Open-source bot tool for natural language understanding

#3
This is interesting, I've been using LUIS for some time now and an open source alternative - especially one that is drop-in API compatible - is very welcome.

However I can't find any information in the docs on how comparable the results are (i.e. does it have built-in date and time entity recognition like LUIS?). Most importantly: what languages does this support? All examples are in english-only. Is it even language aware, or do you train a model in any language? I'd be very interested if this were to support languages that LUIS does not have (like my language: Dutch)

Re: Rasa NLU: Open-source bot tool for natural language understanding

#5
A while ago I looked for information on how Alexa, Wit.ai, Nuance Mix etc. do this intent classification and didn't find anything.

These guys have posted a nice blog post about their approach:

https://conversations.golastmile.com/do-it-yourself-nlp-for-...

They suggest that they add the word vectors in the sentence. But it seems to me that that would make the result independent of the order of words (i.e. "when does Tesco open?" and "Open Tesco when does" are the same). I thought I had tested that and it didn't work but actually I just tried saying "Tesco open does when?" to Alexa and it said "Sorry, I don't have the business hours for Tesco". Inconclusive I'd say but interesting anyway!

Re: Rasa NLU: Open-source bot tool for natural language understanding

#8

This is interesting, I've been using LUIS for some time now and an open source alternative - especially one that is drop-in API compatible - is very welcome. However I can't find any information in the docs on how comparable the results are (i.e. does it have built-in date and time entity recognition like LUIS?). Most importantly: what languages does this support? All examples are in english-only. Is it even language…

Currently it supports english and german. In general we need a word embedding for each language. If that has been created by someone else, it's rather easy to integrate new languages.

Re: Rasa NLU: Open-source bot tool for natural language understanding

#9
post #5

A while ago I looked for information on how Alexa, Wit.ai, Nuance Mix etc. do this intent classification and didn't find anything. These guys have posted a nice blog post about their approach: https://conversations.golastmile.com/do-it-yourself-nlp-for-... They suggest that they add the word vectors in the sentence. But it seems to me that that would make the result independent of the order of words (i.e. "when does…

yeah you're quite right, intents are built with a bag of words model & doesn't take order into account. Entity extraction does though. If you find a case where word order is really important for getting intents right I'd love to know about it! We could find a way to make that work.

Re: Rasa NLU: Open-source bot tool for natural language understanding

#10

This is interesting, I've been using LUIS for some time now and an open source alternative - especially one that is drop-in API compatible - is very welcome. However I can't find any information in the docs on how comparable the results are (i.e. does it have built-in date and time entity recognition like LUIS?). Most importantly: what languages does this support? All examples are in english-only. Is it even language…

currently there are no built-in entities like dates, times, locations etc. But really keen to set up a way for users to share models, and that would definitely include these things as well
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