habedi/kaggle-knowledge-graph

Kaggle Knowledge Graph

A knowledge graph built from Kaggle's public Meta Kaggle (and Meta Kaggle Code datasets). It links competitions, teams, submissions, users, notebooks, datasets, discussion forums, tags, organizations, and notebook code invocations.

See the project repository for build scripts and documentation on the graph schema, data model, and usage examples.

Release

Field	Value
Version	2026-09-30
Meta Kaggle snapshot	2026-09-30
Build code	https://github.com/IssunDB/kaggle-knowledge-graph at commit 3730e8a
Nodes	2,497,893
Edges	7,256,856
Size	328 MiB

File counts, byte sizes, and SHA-256 digests are recorded in manifest.json.

Scope

The graph covers competitions enabled on or after 2020-01-01 (excluding Community events) and their associated entities:

• Ranked and medal-winning teams, their members, leaders, and leaderboard submissions.
• The 50 most-voted notebooks per competition, notebook version lineage, and referenced datasets.
• Competition discussion forums with topics, team write-ups, and messages (in raw HTML and Markdown).
• Tag taxonomy, host and owner organizations, imported libraries, and parsed Python API calls.

All edge endpoints resolve to nodes present in this release.

Tables

Nodes

Label	File	Rows	Columns
Competition	nodes_competition.parquet	372	Id, Slug, Title, Subtitle, HostSegmentTitle, HostName, ForumId, OrganizationId, EnabledDate, DeadlineDate, EvaluationAlgorithmName, EvaluationAlgorithmDescription, EvaluationAlgorithmIsMax, RewardType, RewardQuantity, MaxTeamSize, TotalTeams, TotalCompetitors, TotalSubmissions, Overview, Rules, DatasetDescription
Team	nodes_team.parquet	519,214	Id, CompetitionId, TeamName, Medal, PublicLeaderboardRank, PrivateLeaderboardRank, ScoreFirstSubmittedDate, LastSubmissionDate, IsBenchmark
User	nodes_user.parquet	272,287	Id, UserName, DisplayName, RegisterDate, PerformanceTier, Country
Submission	nodes_submission.parquet	718,275	Id, TeamId, SubmittedUserId, SourceKernelVersionId, SubmissionDate, ScoreDate, IsAfterDeadline, IsSelected, PublicScoreFullPrecision, PrivateScoreFullPrecision
Kernel	nodes_kernel.parquet	16,995	Id, AuthorUserId, CurrentKernelVersionId, FirstKernelVersionId, ForumTopicId, CreationDate, Medal, TotalViews, TotalComments, TotalVotes, CurrentUrlSlug
KernelVersion	nodes_kernel_version.parquet	429,114	Id, ScriptId, VersionNumber, Title, CreationDate, TotalLines, TotalVotes, IsInternetEnabled, RunningTimeInMilliseconds, DockerImage, AuthorUserId, ScriptLanguage, AcceleratorType
Dataset	nodes_dataset.parquet	6,878	Id, CreatorUserId, OwnerUserId, OwnerOrganizationId, CurrentDatasetVersionId, ForumId, Type, CreationDate, LastActivityDate, TotalViews, TotalDownloads, TotalVotes, TotalKernels, Medal
DatasetVersion	nodes_dataset_version.parquet	14,707	Id, DatasetId, CreatorUserId, LicenseName, CreationDate, VersionNumber, Title, Slug, Subtitle, Description, VersionNotes, TotalCompressedBytes, TotalUncompressedBytes
Tag	nodes_tag.parquet	833	Id, ParentTagId, Name, Slug, FullPath, Description
Forum	nodes_forum.parquet	333	Id, ParentForumId, Title
ForumTopic	nodes_forum_topic.parquet	63,355	Id, ForumId, KernelId, CreationDate, LastCommentDate, Title, IsSticky, TotalViews, Score, TotalMessages, TotalReplies
ForumMessage	nodes_forum_message.parquet	455,373	Id, ForumTopicId, PostUserId, PostDate, ReplyToForumMessageId, Message, RawMarkdown, Medal, MedalAwardDate
Library	nodes_library.parquet	0	Id
ApiCall	nodes_api_call.parquet	0	Id, Library
Organization	nodes_organization.parquet	157	Id, Name, Slug, CreationDate, Description

Edges

Type	From	To	File	Rows
COMPETED_IN	Team	Competition	edges_team_competed_in_competition.parquet	519,214
MEMBER_OF_TEAM	User	Team	edges_user_member_of_team.parquet	585,895
LED_TEAM	User	Team	edges_user_led_team.parquet	505,354
FOR_TEAM	Submission	Team	edges_submission_for_team.parquet	718,275
SUBMITTED	User	Submission	edges_user_submitted.parquet	699,453
FROM_KERNEL_VERSION	Submission	KernelVersion	edges_submission_from_kernel_version.parquet	3,644
PUBLIC_LEADERBOARD_SUBMISSION	Team	Submission	edges_team_public_leaderboard_submission.parquet	519,098
PRIVATE_LEADERBOARD_SUBMISSION	Team	Submission	edges_team_private_leaderboard_submission.parquet	519,098
AUTHORED_KERNEL	User	Kernel	edges_user_authored_kernel.parquet	16,290
HAS_VERSION	Kernel	KernelVersion	edges_kernel_has_version.parquet	429,114
CURRENT_VERSION	Kernel	KernelVersion	edges_kernel_current_version.parquet	16,623
AUTHORED_BY	KernelVersion	User	edges_kernel_version_authored_by_user.parquet	415,300
FORKED_FROM	KernelVersion	KernelVersion	edges_kernel_version_forked_from.parquet	76,237
USES_COMPETITION	KernelVersion	Competition	edges_kernel_version_uses_competition.parquet	440,914
IMPORTS	KernelVersion	Library	edges_kernel_version_imports_library.parquet	0
CALLS	KernelVersion	ApiCall	edges_kernel_version_calls_api_call.parquet	0
IN_LIBRARY	ApiCall	Library	edges_api_call_in_library.parquet	0
USES_DATASET_VERSION	KernelVersion	DatasetVersion	edges_kernel_version_uses_dataset_version.parquet	393,780
HAS_VERSION	Dataset	DatasetVersion	edges_dataset_has_version.parquet	14,707
CURRENT_VERSION	Dataset	DatasetVersion	edges_dataset_current_version.parquet	6,513
OWNED_BY_ORGANIZATION	Dataset	Organization	edges_dataset_owned_by_organization.parquet	108
TAGGED_WITH	Kernel	Tag	edges_kernel_tagged_with_tag.parquet	22,911
TAGGED_WITH	Dataset	Tag	edges_dataset_tagged_with_tag.parquet	8,533
TAGGED_WITH	Competition	Tag	edges_competition_tagged_with_tag.parquet	855
HAS_FORUM	Competition	Forum	edges_competition_has_forum.parquet	335
HAS_ORGANIZATION	Competition	Organization	edges_competition_has_organization.parquet	370
MEMBER_OF_ORGANIZATION	User	Organization	edges_user_member_of_organization.parquet	294
HAS_TOPIC	Forum	ForumTopic	edges_forum_has_topic.parquet	63,355
HAS_WRITEUP	Team	ForumTopic	edges_team_has_writeup_topic.parquet	4,364
HAS_MESSAGE	ForumTopic	ForumMessage	edges_forum_topic_has_message.parquet	455,373
POSTED_MESSAGE	User	ForumMessage	edges_user_posted_message.parquet	450,808
REPLIES_TO	ForumMessage	ForumMessage	edges_forum_message_replies_to.parquet	370,041

Usage

Query directly with DuckDB:

import duckdb

duckdb.sql("""
    SELECT c.Title, COUNT(*) AS teams
    FROM 'data/edges_team_competed_in_competition.parquet' e
    JOIN 'data/nodes_competition.parquet' c ON c.Id = e.to_competition_id
    GROUP BY c.Title
    ORDER BY teams DESC
    LIMIT 10
""").show()

Load with Hugging Face datasets:

from datasets import load_dataset

competitions = load_dataset("habedi/kaggle-knowledge-graph", "nodes_competition", split="train")

To query with Cypher, load the files into IssunDB or any other graph database of your choice.

Limitations

• Snapshot from 2026-09-30; later Kaggle activity is not included.
• Covers competitions enabled on or after 2020-01-01 and at most 50 most-voted notebooks per competition.
• Library and API call tables cover only notebook versions available in Meta Kaggle Code.
• Forum messages are stored as raw Kaggle HTML and Markdown.

Licensing and Privacy

Meta Kaggle data is licensed under CC BY-NC-SA 4.0 for non-commercial use with attribution. Build scripts at https://github.com/IssunDB/kaggle-knowledge-graph are licensed under the MIT License. The dataset includes only public profile attributes and forum posts published by Kaggle.