Intent returning Null for Rasa nlu - rasa-nlu

Question

I am currently running into an issue where if the user types a word that has not been trained in the nlu file, the nlu will return this:
"intent": {
"name": null,
"confidence": 0.0
}
With other scenarios, it works great! Is there a way to capture these errors and have rasa return the default error message? Please let me know. Thank you!

Answer 1

It is unclear how you are using this nlu response.
If you are using it in rasa_core, you can capture & handle any such intent beforehand in your Custom Action Class.
e.g.
def run(self, dispatcher, tracker, domain):
intent = tracker.latest_message.intent["name"]
If you want to do it at rasa_nlu level itself, go to rasa_nlu installation directory (usually it is in "Python install folder"\Lib\site-packages\rasa_nlu\ and make below changes in model.py
def default_output_attributes():
return {"intent": {"name": None, "confidence": 0.0}, "entities": []}
to
def default_output_attributes():
return {"intent": {"name": "YOUR_CUSTOM_NAME", "confidence": 0.0}, "entities": []}
But please be cautioned in using second one. You may have to take care while upgrading rasa_nlu python package.