Applying pipeline “tensorflow_embedding” of Rasa NLU

According to this nice article, there was a new pipeline released using a different approach from the standard one (spacy_sklearn). I wanted to give it a try to see whether it can help with improving bot’s accuracy.

After applying done, I gave an evaluation of “tensorflow_embedding”. It seemed to work better a bit. For example, I defined intents “greet” and “goodbye” with some following messages in my training data.


## intent:greet
- Hey! How are you?
- Hi! How can I help you?
- Good to see you!
- Nice to see you!
- Hi
- Hello
- Hi there

## intent:goodbye
- Bye
- Bye Bye
- See you later
- Take care
- Peace

In order to play around with Rasa NLU, I created a project here. You can have a look at this change from this pull request. Yay!

When I entered message “hi bot”, then bot with “tensorflow_embedding” could detect intent “greet” with better confidence scores rather than bot with “spacy_sklearn”. The following are responses after executing curl -X POST localhost:5000/parse -d '{"q": "Hi bot", "project": "ctraubot", "model": "nlu"}' | python -m json.tool
A response of bot with pipeline spacy_sklearn

{

"intent": {

"name": "greet",

"confidence": 0.8687479112327237

},

"entities": [],

"intent_ranking": [

{

"name": "greet",

"confidence": 0.8687479112327237

},

{

"name": "goodbye",

"confidence": 0.13125208876727643

}

],

"text": "Hi bot",

"project": "ctraubot",

"model": "nlu"

}

A response of bot with pipeline tensorflow_embedding

{

"intent": {

"name": "greet",

"confidence": 0.9777982831001282

},

"entities": [],

"intent_ranking": [

{

"name": "greet",

"confidence": 0.9777982831001282

},

{

"name": "goodbye",

"confidence": -0.08299092948436737

}

],

"text": "Hi bot",

"project": "ctraubot",

"model": "nlu"

}

By the way, I still need modules spacy and sklearn for a further usage of entity extraction.

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