Rasa 3.0 filling slots with forms using "from_text" - no entities

Rasa Open Source
1

I am trying to replicate filling a form with “first_name” and “last_name” similar to the rasa2.0 version of https://github.com/RasaHQ/rasa-2.x-form-examples/tree/main/03-simple-form.

I cannot use an entity because differentiating between first_name and last_name is difficult.

When I try to run the bot in interactive mode I can trigger the form, but I cannot provide the user input for the first and last name, because the names are getting interpreted as intents.

Chat History

 #    Bot                                                       You       
───────────────────────────────────────────────────────────────────────────
 1    action_listen
───────────────────────────────────────────────────────────────────────────
 2                                                            give my name
                                                intent: request_names 1.00
───────────────────────────────────────────────────────────────────────────
 3    name_form 1.00
      active_loop{"name": "name_form"}
      slot{"requested_slot": "first_name"}
      What is your first name?


Current slots:
        first_name: None, last_name: None, requested_slot: first_name, session_started_metadata: None   

------
? The bot wants to run 'action_listen', correct? Yes
? Your input -> Miko
? Your NLU model classified 'Miko' with intent 'deny' and there are no entities, is this correct? No    
? What intent is it? (Use arrow keys)

domain.yml:

slots:
  first_name:
    type: text
    influence_conversation: true
    mappings:
    - type: from_text
      intent: request_names
      conditions:
      - active_loop: name_form
        requested_slot: first_name
  last_name:
    type: text
    influence_conversation: true
    mappings:
    - type: from_text
      intent: request_names
      conditions:
      - active_loop: name_form
        requested_slot: last_name

forms:
  name_form:
    required_slots:
    - first_name
    - last_name

rules.yml

- rule: Activate form
  steps:
  - intent: request_names
  - action: name_form
  - active_loop: name_form

- rule: Submit form
  condition: 
  - active_loop: name_form
  steps:
  - action: name_form
  - active_loop: null
  - slot_was_set: 
    - requested_slots: null
  - action: utter_submit
  - action: utter_slot_values

Any ideas on what is missing, so that the names get picked up? Do I need an “inform” intent?

Thanks for your help

2

from_text will still try to map the input to an intent, but the slot should be filled anyway

3

Unfortunately no slots are filled. See the example dialogue in rasa interactive below:

? The bot wants to run 'name_form', correct? Yes
------
Chat History

 #    Bot                                                       You        
───────────────────────────────────────────────────────────────────────────
 1    action_listen
───────────────────────────────────────────────────────────────────────────
 2                                                  i want to give my name
                                                intent: request_names 1.00
───────────────────────────────────────────────────────────────────────────
 3    name_form 1.00
      active_loop{"name": "name_form"}
      slot{"requested_slot": "first_name"}
      What is your first name?
      action_listen 1.00
───────────────────────────────────────────────────────────────────────────
 4                                                                  Mickey
                                                       intent: affirm 0.66


Current slots:
        first_name: None, last_name: None, requested_slot: first_name, session_started_metadata: None   

------
? The bot wants to run 'utter_happy', correct? Yes
------
Chat History

 #    Bot                                                       You        
───────────────────────────────────────────────────────────────────────────
 1    action_listen
───────────────────────────────────────────────────────────────────────────
 2                                                  i want to give my name
                                                intent: request_names 1.00
───────────────────────────────────────────────────────────────────────────
 3    name_form 1.00
      active_loop{"name": "name_form"}
      slot{"requested_slot": "first_name"}
      What is your first name?
      action_listen 1.00
───────────────────────────────────────────────────────────────────────────
 4                                                                  Mickey
                                                       intent: affirm 0.66
───────────────────────────────────────────────────────────────────────────
 5    utter_happy 0.32
      Great, carry on!


Current slots:
        first_name: None, last_name: None, requested_slot: first_name, session_started_metadata: None   

------
? The bot wants to run 'action_listen', correct? Yes
? Your input -> Mike
? Your NLU model classified 'Mike' with intent 'deny' and there are no entities, is this correct? Yes   
------
Chat History

 #    Bot                                                       You        
───────────────────────────────────────────────────────────────────────────
 1    action_listen
───────────────────────────────────────────────────────────────────────────
 2                                                  i want to give my name
                                                intent: request_names 1.00
───────────────────────────────────────────────────────────────────────────
 3    name_form 1.00
      active_loop{"name": "name_form"}
      slot{"requested_slot": "first_name"}
      What is your first name?
      action_listen 1.00
───────────────────────────────────────────────────────────────────────────
 4                                                                  Mickey
                                                       intent: affirm 0.66
───────────────────────────────────────────────────────────────────────────
 5    utter_happy 0.32
      Great, carry on!
      action_listen 0.99
───────────────────────────────────────────────────────────────────────────
 6                                                                    Mike
                                                         intent: deny 0.75


Current slots:
        first_name: None, last_name: None, requested_slot: first_name, session_started_metadata: None   

------
? The bot wants to run 'action_unlikely_intent' to indicate that the last user message was unexpected a 
t this point in the conversation. Check out UnexpecTEDIntentPolicy (https://rasa.com/docs/rasa/policies 
#unexpected-intent-policy) to learn more. Is that correct? (Y/n)

Here is also my config.yml:

# The config recipe.
# https://rasa.com/docs/rasa/model-configuration/
recipe: default.v1

# Configuration for Rasa NLU.
# https://rasa.com/docs/rasa/nlu/components/
language: en

pipeline:
# # No configuration for the NLU pipeline was provided. The following default pipeline was used to train your model.
# # If you'd like to customize it, uncomment and adjust the pipeline.
# # See https://rasa.com/docs/rasa/tuning-your-model for more information.
  - name: WhitespaceTokenizer
  - name: RegexFeaturizer
  - name: LexicalSyntacticFeaturizer
  - name: CountVectorsFeaturizer
    analyzer: char_wb
    min_ngram: 1
    max_ngram: 4
  - name: DIETClassifier
    epochs: 100
    constrain_similarities: true
  - name: EntitySynonymMapper
  - name: ResponseSelector
    epochs: 100
    constrain_similarities: true
  - name: FallbackClassifier
    threshold: 0.3
    ambiguity_threshold: 0.1



# Configuration for Rasa Core.
# https://rasa.com/docs/rasa/core/policies/
policies:
# # No configuration for policies was provided. The following default policies were used to train your model.
# # If you'd like to customize them, uncomment and adjust the policies.
# # See https://rasa.com/docs/rasa/policies for more information.
  - name: MemoizationPolicy
  - name: RulePolicy
  - name: UnexpecTEDIntentPolicy
    max_history: 5
    epochs: 100
  - name: TEDPolicy
    max_history: 5
    epochs: 100
    constrain_similarities: true
 
```
Rasa version:
```
Rasa Version      :         3.0.9
Minimum Compatible Version: 3.0.0
Rasa SDK Version  :         3.0.6
Rasa X Version    :         None
Python Version    :         3.8.5
Operating System  :         Windows-10-10.0.19041-SP0
Python Path       :         D:\Anaconda\python.exe
(rasa3_n) 
```
```
Thanks for any useful hints.
4

Based on the info above, you should try spacy. See this blog post on entity recognition.

Without spacy, you would need lots of example utterances showing the entity extraction.

5

@stephens Thanks for your input. According to the title of this thread I want to do slot filling without entities because machine learning for distinguishing first and last names will be a big topic.

I am currently trying to find out, how Rasa 3.0 can just pick up the provided answers once the system has decided that we want to fill slots with information “from_text”. Unfortunately the “active loop” does not start to fill the slots.

6

I am still stuck on this issue, without any changes. I reinstalled rasa several times but this did not solve the issue. The active_loop starts, the question for the first slot is uttered, but nothing is filled into the slots. I would appreciate if anyone has references / tutorials for a simple rasa 3.x bot that is just filling a simple form with “from_text”.

7

Hi @newinmunich,

my files look exactly like yours and I have the same problem. I tried a lot and can’t resolve it by myself. Hope someone can help :frowning:

8

I have finally found the solution. It is in this official RASA tutorial that is unfortunately not linked in the RASA 3 playlist.

“Slots filled by Text | Rasa Tutorial” Slots filled by Text | Rasa Tutorial

@botsi155 This has worked for me.