Some messages getting wrong intent

Rasa Open Source
1

Can anyone see the below code and suggest me what changes are to be made ? While giving random inputs like ‘Is this a human?’ giving me product_size intent response…

nlu.yml

version: "3.0"

nlu:
- intent: greet
  examples: |
    - hey
    - hello
    - hi


- intent: know_more
  examples: |
    - Know more
    - know more

- intent: buy_now
  examples: |
    - Buy now
    - buy now
    - Buy this item
    - buy this item

- intent: product_size
  examples: |
    - [xs](product_size)
    - [s](product_size)
    - [m](product_size)
    - [l](product_size)
    - [xl](product_size)
    - [xxl](product_size)

- lookup: size
  examples: |
    - xs
    - s
    - m
    - l
    - xl
    - xxl

config.yml

pipeline:
  - 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

policies:
  - name: RulePolicy
    core_fallback_threshold: 0.9
    core_fallback_action_name: "action_default_fallback"
    enable_fallback_prediction: True
  - name: TEDPolicy
    max_history: 15
    epochs: 100
    constrain_similarities: true
  - name: UnexpecTEDIntentPolicy
    max_history: 5
    epochs: 100

stoies.yml

stories:
- story: order path 1
  steps:
  - intent: greet
  - action: utter_greet
  - intent: buy_now
  - action: utter_buy_now
  - intent: product_size
  - action: utter_ask_user_profile_form_product_size
  - intent: color_list
  - action: utter_ask_user_profile_form_color_list
  - intent: checkout
  - action: utter_checkout
  
- story: checkout path
  steps:
  - intent: mobile_number
  - action: utter_ask_user_profile_form_mobile_number
  - intent: share_mail
  - action: utter_ask_user_profile_form_email_id

rules.yml

rules:
- rule: checkout rule
  steps:
  - intent: checkout
  - action: utter_checkout
- rule: address rule
  steps:
  - intent: address
  - action: utter_ask_user_profile_form_address
- rule: image rule
  steps:
  - intent: image
  - action: utter_image
2

The best thing to do is to make an intent that captures user input like: “is this a human”. Weird thing is that your fallback is on 0.9 which is very high. Did you provide a fallback answer?