Time between testing two questions

Rasa Open Source
1

Hi,

Is there a way to determine the time elapsed between two consecutive test questions for a rasa chatbot?

Let’s say, I have a trained model and I am testing it out and I need to find how much time it took for the bot to give the response for 5th question (subtracting the timestamp of 4th from that of the 5th question).

2

Yes, Rasa Action server

3

Welcome to the forum! :slight_smile:

As @InnoOmnia mentioned, you should use Custom Actions. This lets you write custom Python code as a response to intents.

In these actions, you can set a Slot representing the timestamp of the last question by returning [SlotSet('time_slot': timestamp_now)] (see Events).

And you can use tracker.get_slot(‘time_slot’) to retrieve the value of the slot.

1 Like
4

Hi Chris and @InnoOmnia,

Thanks for your inputs. Based on your recommendations we tried the custom actions at our end and we have a hunch we are definitely close to achieving our aim. Below is how our custom action class looks like :

Custom_Actions
Custom_Actions1034×360 64.4 KB

But this throws an error

File “/home/intel/Desktop/chatbot_tgl/venv/rasa_chatbot/WW40.3/actions/actions.py”, line 49 event = SlotSet(‘time_slot’, timestamp: Optional[float] = None) ^ SyntaxError: invalid syntax

Our understanding is we are missing on initialization of the timestamp parameter. We would appreciate if you can help us out to correct it.

5

Please, don’t use pictures but block quote formatting

anyway this

event = SlotSet('time_slot, timestamp: Optional[float] = none)

should be something like this

evt = [SlotSet(‘time_slot’: timestamp_now)]

1 Like
6

First, Python syntax issue:

You cannot use type hinting (: Optional[float]) and default arguments (= None) when passing arguments. SlotSet is not a function definition, it’s a constructor for an existing class.

  • Wrong:
    SlotSet('time_slot', timestamp: Optional[float] = None)
  • Correct:
    SlotSet('time_slot', timestamp)

Second, Rasa usage issue:

You should return a list of events at the end of the run() method as I mentioned above

The slot will be set after the whole actions runs.

  • Wrong:
    event = SlotSet('time_slot', timestamp)
return []
  • Correct:
    event = SlotSet('time_slot', timestamp)
return [event]

Third, Python issue again:

You want to set the variable timestamp inside the time_slot, but you haven’t defined it anywhere.

  • Wrong:
    event = SlotSet('time_slot', timestamp)
return [event]
  • Correct:
    timestamp = datetime.datetime.now()
event = SlotSet('time_slot', timestamp)
return [event]

Fourth, logic issue:

You are trying to set the slot, then retrieve the value back right after. Even if SlotSet worked inside a run() method, that would be like doing b = a then c = b. Just do c = a.

  • Wrong:

    timestamp = datetime.datetime.now()
event = SlotSet('time_slot', timestamp)
time = tracker.get_slot('time_slot')
return [event]

  • Correct:

    time = datetime.datetime.now()
return []

Finally, if you want to use the time inside the run() method AND save it for future use:

time = datetime.datetime.now()
dispatcher.utter_message(time)
event = SlotSet('time_slot', time)
return [event]

Then, in the next action, your retrieve that slot using tracker.get_slot():

previous_time = tracker.get_slot('time_slot')

Or, if you want to retrieve the slot and set it again both in every action:

previous_time = tracker.get_slot('time_slot')
dispatcher.utter_message(f'The time of the previous action was {previous_time}')

new_time = datetime.datetime.now()
return [SlotSet('time_slot', new_time)]

And as @InnoOmnia said, please don’t paste pictures to help those who help you copy your code. Instead, use block quote formatting by placing three backticks (```) and not apostrophes (‘’') a line before and a line after the code

```
like this
```