Entities (Nodes)

Overview

Entities are the fundamental building blocks of ResearchArcade's knowledge graph. Each entity type represents a distinct concept in academic research, from papers and authors to reviews and revisions. This page provides a comprehensive reference for all entity types, their attributes, and data types.

Note: Entities are stored across both ArXiv and OpenReview datasets. See Schema Details for information on schema organization.

Entity Categories

ArXiv Entities

Papers, Authors, Categories, Sections, Paragraphs, Figures, Tables

OpenReview Entities

Papers, Authors, Paragraphs, Reviews, Revisions

Cross-Platform Links

OpenReview-ArXiv mappings connecting papers across platforms

arxiv.papers

Academic papers from ArXiv with comprehensive metadata including version tracking and submission dates.

Attributes

Attribute	Type	Required	Description
`id`	integer	Yes	Auto-generated unique identifier (primary key)
`arxiv_id`	string	Yes	Full ArXiv identifier with version (e.g., 1706.03762v7)
`base_arxiv_id`	string	Yes	Base ArXiv identifier without version (e.g., 1706.03762)
`version`	integer	Yes	Version number of the paper
`title`	string	Yes	Paper title
`abstract`	text	No	Paper abstract
`submit_date`	date	No	Publication or submission date
`metadata`	json	No	Additional metadata in JSON format

arxiv.authors

Authors of ArXiv papers with Semantic Scholar integration for persistent identification.

Attributes

Attribute	Type	Required	Description
`id`	integer	Yes	Auto-generated unique identifier (primary key)
`semantic_scholar_id`	string	Yes	Semantic Scholar author identifier (unique key)
`name`	string	Yes	Author full name
`homepage`	string	No	Author's homepage URL from Semantic Scholar

arxiv.categories

ArXiv subject categories (e.g., cs.AI, cs.LG, math.CO) for classifying papers.

Attributes

Attribute	Type	Required	Description
`id`	integer	Yes	Auto-generated unique identifier (primary key)
`name`	string	Yes	Category name (e.g., cs.AI, cs.LG)
`description`	text	No	Category description

arxiv.sections

Hierarchical sections within ArXiv papers (e.g., Introduction, Methods, Results) with full text content.

Attributes

Attribute	Type	Required	Description
`id`	integer	Yes	Auto-generated unique identifier (primary key)
`content`	text	Yes	Full text content of the section
`title`	string	Yes	Section heading/title
`appendix`	boolean	Yes	Whether this section is part of the appendix
`paper_arxiv_id`	string	Yes	Reference to parent paper (foreign key)
`section_in_paper_id`	integer	No	Sequential order within the paper

arxiv.paragraphs

Individual paragraphs within ArXiv paper sections, enabling fine-grained text analysis and citation tracking.

Attributes

Attribute	Type	Required	Description
`id`	integer	Yes	Auto-generated unique identifier (primary key)
`section_id`	integer	Yes	Reference to parent section (foreign key)
`content`	text	Yes	Paragraph text content
`paragraph_in_section_id`	integer	No	Sequential order within the section

arxiv.figures

Images, diagrams, and visualizations within ArXiv papers with captions and labels.

Attributes

Attribute	Type	Required	Description
`id`	integer	Yes	Auto-generated unique identifier (primary key)
`paper_arxiv_id`	string	Yes	Reference to parent paper (foreign key)
`path`	string	Yes	File path to the figure image
`caption`	text	No	Figure caption text
`label`	string	No	LaTeX label for cross-referencing (e.g., fig:architecture)
`name`	string	No	Figure identifier or name

arxiv.tables

Tabular data and structured information within ArXiv papers.

Attributes

Attribute	Type	Required	Description
`id`	integer	Yes	Auto-generated unique identifier (primary key)
`paper_arxiv_id`	string	Yes	Reference to parent paper (foreign key)
`path`	string	No	File path to table source
`caption`	text	No	Table caption text
`label`	string	No	LaTeX label for cross-referencing (e.g., tab:results)
`table_text`	text	No	Table content in text format

openreview.papers

Academic papers submitted to OpenReview venues with review decisions and PDF links.

Attributes

Attribute	Type	Required	Description
`venue`	string	Yes	Conference or venue identifier (e.g., ICLR.cc/2024)
`paper_openreview_id`	string	Yes	Unique OpenReview paper identifier (composite key with venue)
`title`	string	Yes	Paper title
`abstract`	text	Yes	Paper abstract
`paper_decision`	string	Yes	Editorial decision (Accept, Reject, etc.)
`paper_pdf_link`	string	Yes	URL to paper PDF

openreview.authors

Authors of OpenReview papers with affiliation and contact information.

Attributes

Attribute	Type	Required	Description
`venue`	string	Yes	Conference or venue identifier
`author_openreview_id`	string	Yes	Unique OpenReview author identifier (composite key with venue)
`author_full_name`	string	Yes	Author full name
`email`	string	Yes	Contact email address
`affiliation`	string	Yes	Institutional affiliation
`homepage`	string	Yes	Personal homepage URL
`dblp`	string	Yes	DBLP profile identifier

openreview.paragraphs

Individual paragraphs extracted from OpenReview papers, organized by section for detailed content analysis.

Attributes

Attribute	Type	Required	Description
`venue`	string	Yes	Conference or venue identifier
`paper_openreview_id`	string	Yes	Reference to parent paper (foreign key)
`paragraph_idx`	integer	Yes	Sequential index of paragraph (composite key with venue and paper_id)
`section`	string	Yes	Section name where paragraph appears
`content`	text	Yes	Paragraph text content

openreview.reviews

Peer reviews and comments from OpenReview with structured content including ratings, strengths, and weaknesses.

Attributes

Attribute	Type	Required	Description
`venue`	string	Yes	Conference or venue identifier
`review_openreview_id`	string	Yes	Unique review identifier (composite key with venue)
`replyto_openreview_id`	string	Yes	ID of the paper or comment being replied to (foreign key)
`writer`	string	Yes	Reviewer identifier (may be anonymous)
`title`	string	Yes	Review title
`content`	json	Yes	Structured review content (ratings, summary, strengths, weaknesses, questions)
`time`	string	Yes	Timestamp when review was submitted

openreview.revisions

Different versions of OpenReview papers as they are updated and revised during the review process.

Attributes

Attribute	Type	Required	Description
`venue`	string	Yes	Conference or venue identifier
`original_openreview_id`	string	Yes	Reference to original paper (foreign key)
`revision_openreview_id`	string	Yes	Unique revision identifier (composite key with venue)
`content`	json	Yes	Revision content and metadata as structured data
`time`	string	Yes	Timestamp when revision was made

openreview.arxiv

Cross-platform links connecting OpenReview papers to their corresponding ArXiv versions.

Attributes

Attribute	Type	Required	Description
`venue`	string	Yes	OpenReview venue identifier
`paper_openreview_id`	string	Yes	OpenReview paper identifier (composite key with venue)
`arxiv_id`	string	Yes	Corresponding ArXiv identifier
`title`	string	Yes	Paper title for reference

Overview

Entity Categories

ArXiv Entities

OpenReview Entities

Cross-Platform Links

arxiv.papers

Attributes

arxiv.authors

Attributes

arxiv.categories

Attributes

arxiv.sections

Attributes

arxiv.paragraphs

Attributes

arxiv.figures

Attributes

arxiv.tables

Attributes

openreview.papers

Attributes

openreview.authors

Attributes

openreview.paragraphs

Attributes

openreview.reviews

Attributes

openreview.revisions

Attributes

openreview.arxiv

Attributes

Related Resources

Relations Reference

Schema Details