# Tracker

Trackers maintain the state of a dialogue between the assistant and the user in the form of conversation sessions. To learn more about how to configure the session behavior, check out the docs on [Session configuration](https://legacy-docs-v1.rasa.com/1.10.11/core/domains/#session-config).

## `class rasa.core.trackers.DialogueStateTracker(sender_id, slots, max_event_history=None, sender_source=None)`
Maintains the state of a conversation.

### Methods

- `applied_events()`  
  Returns all actions that should be applied - w/o reverted events.
  
- `as_dialogue()`  
  Return a `Dialogue` object containing all of the turns.
  This can be serialized and later used to recover the state
  of this tracker exactly.

- `change_form_to(form_name)`  
  Activate or deactivate a form

- `clear_followup_action()`  
  Clears follow up action when it was executed.

- `copy()`  
  Creates a duplicate of this tracker

- `current_slot_values()`  
  Return the currently set values of the slots

- `current_state(event_verbosity=<EventVerbosity.NONE: 1>)`  
  Return the current tracker state as an object.

- `events_after_latest_restart()`  
  Return a list of events after the most recent restart.

- `export_stories(e2e=False, include_source=False)`  
  Dump the tracker as a story in the Rasa Core story format.

- `export_stories_to_file(export_path='debug.md')`  
  Dump the tracker as a story to a file.

- `from_dict(sender_id, events_as_dict, slots=None, max_event_history=None)`  
  Create a tracker from dump.

...  
(Additional methods follow in the same format)

## Note on Images
  
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