Action_default_fallback returned when not required

[Deprecated] Rasa X Community Edition
1

I’m using Rasa X for improving my chatbot. I’m getting some conversational errors… the intents are correctly recognised, but the response is often wrong. In particular, many times it returns action_default_fallback even if the intent appears in the stories only before a particular action.

Like in this example:

image
image859×594 14.2 KB

Where the intent feedback appears only in this story:

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image785×291 8.46 KB

This is my config file:

language: en
pipeline: supervised_embeddings
policies:
  - name: MemoizationPolicy
  - name: KerasPolicy
  - name: MappingPolicy
  - name: TwoStageFallbackPolicy
    nlu_threshold: 0.15
    ambiguity_threshold: 0.1
    core_threshold: 0.15
    fallback_core_action_name: action_default_fallback
    fallback_nlu_action_name: action_default_fallback
    deny_suggestion_intent_name: out_of_scope
  - name: FormPolicy

I kept the threshold very low for trying to solve the issue, but it didn’t work

I tried to train the model multiple times but didn’t help

2

Please provide the debug log output so we can see the prediction. Also, if your bot is primarily an FAQ bot with single-turn interactions, switch from the MemoizationPolicy to the AugmentedMemoizationPolicy