Data Sources

This section provides information about each source currently supported by the DSL (version 1.31.0) in its default configuration, listing each field available for that source with details about the field value type, including whether it may be used as a facet and whether it is a multi-value field. The page also lists the fields included in each fieldset available for a given source, and each aggregation indicator available for each source.

There are eight primary content types that can be queried via the API:

Two additional sources consist of curated lists of disambiguated researchers and organizations. These objects are referenced in all of the content types above.

The figure below provides an overview of the main document sources and their respective cross links.

The figure below provides an overview of the main relatioships between document sources and researchers / organizations.

cross source links - documents and researchers-organizations

Finally, a number of auxiliary entities exists, which cannot be queried directly but are available as structured fields or facets attached to the primary sources. The next

Auxiliary Entities

Auxiliary entities are subsidiary objects that cannot be queried directly, but are available as structured data attached to primary sources via fields or facets.

States

States Literal Fields

Field	Literal Type	Multi?	Filter? Entity Filter?	Description
`name`	string		✓ ✓	GeoNames state name (ISO‌-3166-2).
`id`	string		✓ ✓	GeoNames state code (ISO‌-3166-2). E.g., ‘US.CA’ for geonames:5332921 .

States Fieldsets

Fieldset	Fields
`basics`	`id` `name`

Publication Links

Publication Links Literal Fields

Field	Literal Type	Filter? Entity Filter?	Description
`pmid`	string	✓ ✓	PubMed ID
`pmcid`	string	✓ ✓	PubMed Central ID
`id`	string	✓ ✓	Dimensions publication id
`doi`	string	✓ ✓	Digital object identifier

Publication Links Fieldsets

Fieldset	Fields
`basics`	`doi` `id` `pmcid` `pmid`

Open Access

Open Access Literal Fields

Field	Literal Type	Filter? Entity Filter?	Description
`name`	string	✓ ✓	Name of the open access category. E.g., ‘Closed’ or ‘Pure Gold’.
`id`	string	✓ ✓	Dimensions ID of the open access category. E.g., one of ‘closed’, ‘oa_all’, ‘gold_bronze’, ‘gold_pure’, ‘green_sub’, ‘gold_hybrid’, ‘green_pub’, ‘green_acc’. (see also the Publications field `open_access`).
`description`	string		Description of the open access category.

Open Access Fieldsets

Fieldset	Fields
`basics`	`description` `id` `name`

Journals

Journals Literal Fields

Field	Literal Type	Multi?	Filter? Entity Filter?	Description
`title`	string		✓ ✓	Title of a journal publication. E.g. ‘Nature’ or ‘The Lancet’
`id`	string		✓ ✓	Dimensions ID of a journal. E.g., jour.1016355 or jour.1077219 .

Journals Fieldsets

Fieldset	Fields
`basics`	`id` `title`

Countries

Countries Literal Fields

Field	Literal Type	Multi?	Filter? Entity Filter?	Description
`name`	string		✓ ✓	GeoNames country name.
`id`	string		✓ ✓	GeoNames country code (eg ‘US’ for geonames:6252001 )

Countries Fieldsets

Fieldset	Fields
`basics`	`id` `name`

Cities

Cities Literal Fields

Field	Literal Type	Multi?	Filter? Entity Filter?	Description
`name`	string		✓ ✓	GeoNames city name.
`id`	string		✓ ✓	GeoNames city ID (eg ‘5391811’ for geonames:5391811 )

Cities Fieldsets

Fieldset	Fields
`basics`	`id` `name`

Categories

Categories Literal Fields

Field	Literal Type	Multi?	Filter? Entity Filter?	Description
`name`	string		✓ ✓	Name of the category. Note: this may include an identifier from the original source. E.g., ‘2.1 Biological and endogenous factors’ (HRCS_RAC codes) or ‘1103 Clinical Sciences’ (FOR codes).
`id`	string		✓ ✓	Dimensions ID of the category.

Categories Fieldsets

Fieldset	Fields
`basics`	`id` `name`

Literal Field Types

This section provides information about the most basic field types currently supported by the DSL (version 1.31.0).

Field type	Description
`date`	String that represents a precise date. Format is `"YYYY-MM-DD"`, if `MM` or `DD` are omitted, they are considered to be `01` automatically.
`float`	Floating decimal point number
`integer`	Whole number
`string`	Short piece of text a few characters/words long, e.g. journal issue
`json`	Nested unstructured data

Metadata API

The DSL exposes programmatically metadata, such as supported sources and entities, along with their fields, facets, fieldsets, metrics and search fields.

This is available via the describe command. This can be used in the following ways:

describe - returns list of all sources and entities
describe version - returns information about the DSL version and release
describe source <source_name> - returns information about fields, fieldsets, metrics and search_fields of a source
describe entity <entity_name> - returns information about fields and fieldsets of an entity
describe schema - returns information about all sources and all entities at once
describe service <service_name> - returns information about a service. Supported services: grid

For example, the following query will retrieve metadata about all the fields relevant to the publications source.

describe source publications

The metadata is returned as JSON.