OpenAlex technical documentation
  • Overview
  • Quickstart tutorial
  • API Entities
    • Entities overview
    • 📄Works
      • Work object
        • Authorship object
        • Location object
      • Get a single work
      • Get lists of works
      • Filter works
      • Search works
      • Group works
      • Get N-grams
    • 👩Authors
      • Author object
      • Get a single author
      • Get lists of authors
      • Filter authors
      • Search authors
      • Group authors
      • Limitations
      • Author disambiguation
    • 📚Sources
      • Source object
      • Get a single source
      • Get lists of sources
      • Filter sources
      • Search sources
      • Group sources
    • 🏫Institutions
      • Institution object
      • Get a single institution
      • Get lists of institutions
      • Filter institutions
      • Search institutions
      • Group institutions
    • 💡Topics
      • Topic object
      • Get a single topic
      • Get lists of topics
      • Filter topics
      • Search topics
      • Group topics
    • 🗝️Keywords
    • 🏢Publishers
      • Publisher object
      • Get a single publisher
      • Get lists of publishers
      • Filter publishers
      • Search publishers
      • Group publishers
    • 💰Funders
      • Funder object
      • Get a single funder
      • Get lists of funders
      • Filter funders
      • Search funders
      • Group funders
    • 🌎Geo
      • Continents
      • Regions
    • Concepts
      • Concept object
      • Get a single concept
      • Get lists of concepts
      • Filter concepts
      • Search concepts
      • Group concepts
    • Aboutness endpoint (/text)
  • How to use the API
    • API Overview
    • Get single entities
      • Random result
      • Select fields
    • Get lists of entities
      • Paging
      • Filter entity lists
      • Search entities
      • Sort entity lists
      • Select fields
      • Sample entity lists
      • Autocomplete entities
    • Get groups of entities
    • Rate limits and authentication
  • Download all data
    • OpenAlex snapshot
    • Snapshot data format
    • Download to your machine
    • Upload to your database
      • Load to a data warehouse
      • Load to a relational database
        • Postgres schema diagram
  • Additional Help
    • Tutorials
    • Report bugs
    • FAQ
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  1. API Entities

Topics

Topics assigned to works

PreviousGroup institutionsNextTopic object

Last updated 1 year ago

Works in OpenAlex are tagged with Topics using an automated system that takes into account the available information about the work, including title, abstract, source (journal) name, and citations. There are around 4,500 Topics. Works are assigned topics using a model that assigns scores for each topic for a work. The highest-scoring topic is that work's . We also provide additional highly ranked topics for works, in .

To learn more about how OpenAlex topics work in general, see .

For a detailed description of the methods behind OpenAlex Topics, see our paper: . The code and model are available at .

What's next

Learn more about what you can do with topics:

💡
the Topics page at OpenAlex help pages
"OpenAlex: End-to-End Process for Topic Classification"
https://github.com/ourresearch/openalex-topic-classification
The Topic object
Get a single topic
Get lists of topics
Filter topics
Search topics
Group topics
primary_topic
Work.topics