open-spaced-repetition/anki-revlogs-10k

Introduction

Anki Revlogs 10K is a dataset of 10k collections from Anki for FSRS project. It is a random sample of collections with 5000+ revlog entries, so it should contain a mix of older (still active) users, and newer users.

The dataset contains three parts: revlogs, cards, and decks.

Revlogs

This dataset contains flashcard review records with the following fields:

• card_id: Unique identifier for each flashcard
• day_offset: Number of days since the start of user's first review
• rating: User's rating of their recall performance (1: again, 2: hard, 3: good, 4: easy)
• state: Card's learning state (0: new, 1: learning, 2: review, 3: relearning)
• duration: Time spent on the card review in milliseconds (range: 0-60000)
• elapsed_days: Days since the last review (-1 for new cards)
• elapsed_seconds: Seconds since the last review (-1 for new cards)

The records have been pre-sorted in chronological order.

Cards

This dataset contains card-note-deck relationship mappings with the following fields:

• card_id: Unique identifier for each flashcard
• note_id: Unique identifier for each note, where a note can contain multiple cards
• deck_id: Unique identifier for each deck, representing different study categories or subjects

Decks

This dataset contains deck hierarchy information with the following fields:

• deck_id: Unique identifier for each deck
• parent_id: ID of the parent deck, indicating the deck's position in the hierarchy
• preset_id: ID of the preset configuration applied to the deck

License

This dataset is released under the anki-revlogs-10k License.

Related Projects

Anki Revlogs Dataset Builder

SRS Benchmark