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Documentation
  • Tutorials
  • How-to guides
  • Reference
  • Explanation
Getting started
  • Start here
  • Your first research project in Atlas
  • Add your first source
Projects
  • Work with the three-panel workspace
  • Create and manage projects
  • Project structure
Sources
  • Import a PDF into Atlas
  • Add a website source
  • Add a YouTube source
  • Search and add academic papers
  • Read PDFs
  • Source types
  • PDF viewer
Chat & citations
  • Ask a grounded question
  • Synthesize across multiple sources
  • Follow citations back to source
  • Use mentions in chat and notes
  • Use web search
  • Add files to chat
  • Citation system
  • Search modes
  • How Atlas grounds answers in sources
  • Verifiable AI: the citation trust model
Notes
  • Write your first note
  • Import Markdown notes
  • Note editor
  • Note editor formatting
Knowledge maps
  • Generate a knowledge map
  • Edit and export a knowledge map
  • Knowledge map controls
  • Map node types
  • Why visual knowledge maps
Semantic maps
  • Read the semantic map
  • Semantic map controls
Search, summaries & questions
  • Find research in a project
  • Use summaries to triage sources
  • Summaries
  • Question suggestions
Workspace
  • Use tabs and split view
  • Workspace layout
  • Command palette
  • Keyboard shortcuts
  • Mobile app
Account, billing & limits
  • Sign in and reset your password
  • Manage billing
  • Delete your account
  • Plans and limits
  • Attachments
Troubleshooting
  • Troubleshoot source processing
  • Troubleshoot citations and weak answers
  • Troubleshoot billing and limits
  • Troubleshoot mobile and browser issues

Search modes

Atlas uses search in several places: finding project material, retrieving context for chat, matching related concepts, and optionally bringing in web context.

Project search

Project search finds material already inside the active project:

  • source titles and content
  • note titles and content
  • chats or generated outputs
  • map concepts
  • project artifacts.

Use project search when you know the answer should come from your existing research workspace.

Keyword search

Keyword search is best when exact wording matters:

  • author names
  • article titles
  • technical terms
  • acronyms
  • quoted phrases
  • IDs such as DOI or arXiv identifiers.

If keyword search fails, check spelling, variants, plural forms, and abbreviations.

Semantic search

Semantic search is best when the idea matters more than the exact words. It can find related concepts even when the source uses different vocabulary.

Use semantic search for exploratory work, literature review clustering, broad questions, and finding adjacent ideas.

Web search

Web search brings in outside information that is not already in the project. Use it when the project does not contain enough evidence, when information may be current, or when you intentionally want external context.

For source-grounded research, be explicit about whether web search is allowed. If you need project-only answers, say so.

Mode comparison

ModeBest for
Project searchFinding material already in the project.
Semantic searchFinding related ideas with different wording.
Keyword searchFinding exact terms, titles, authors, or phrases.
Web searchCurrent or outside information not in the project.

Verification rule

Search finds candidates. Citations and source review verify claims. Do not treat a retrieved result as correct until you have checked the underlying source.

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for understanding research papers.

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