Topic object
Last updated
Last updated
These are the fields in a topic object. When you use the API to get a or , this is what's returned.
description
String: A description of this topic, .
display_name
String: The English-language label of the topic.
domain
Object: The ID and the name (display_name
) for the domain of this topic. The domain is the highest level in the "domain, field, subfield, topic" system, which means it is the least granular. See the for more explanation and a diagram.
field
Object: The ID and the name (display_name
) for the field of this topic. The field is the second-highest level in the "domain, field, subfield, topic" system, which means it is the second-least granular. See the for more explanation and a diagram.
id
String: The OpenAlex ID for this topic.
ids
Object: All the external identifiers that we know about for this topic. IDs are expressed as URIs whenever possible. Possible ID types:
wikipedia
(String: this topic's Wikipedia page URL)
keywords
subfield
updated_date
works_count
Integer: The number of works tagged with this topic.
openalex
(String: this topic's . Same as )
List: Keywords consisting of one or several words each, meant to represent the content of the papers in the topic. These keywords were generated as part of the . For now, they are provided as-is, but we will be providing more support and documenting them more thoroughly.
Object: The ID and the name (display_name
) for the subfield of this topic. The subfield is the third-highest level in the "domain, field, subfield, topic" system, which means it is the third-least granular. See the for more explanation and a diagram.
String: The last time anything in this topic object changed, expressed as an date string. This date is updated for any change at all, including increases in various counts.