A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.
Indicates a request for relevant open data sources. Please read "[How a good data-request question should look](https://opendata.meta.stackexchange.com/q/284/17438)" for writing a good request.
Geospatial pertains to the geographic location and characteristics of natural or constructed features and boundaries on, above, or below the Earth's surface, particularly referring to data that is geo…
For questions related to the United States of America or regions within it.
For questions related to application programming interfaces. Use 'api-request' instead if you're looking for an API that provides specific open data.
Healthcare, the body, medicine, medical research, pharmacology, anatomy, etc
Questions and answers surrounding the U.S. Food and Drug Administration's OpenFDA program.
Algorithmic learning from data. A form of Pattern Recognition.
For questions related to data.gov, the home of the U.S. Government’s open data.
For questions about government-related datasets. If relevant, please also specify the country in a separate tag.
Uses of Open Data consists of ways and methods to utilize Open Data in attempts to achieve its maximum benefits
Natural language processing (NLP) is a subfield of artificial intelligence and machine learning that involves transforming or extracting useful information from natural language data.
For questions about data related to a physical likeness or representation of a person, animal, or thing, photographed, painted, sculptured, or otherwise made visible
For questions related to weather and climatic data trends and anomalies, storms, wind patterns, tornadoes, and other short-term meteorological events.
For questions related to making data available for others to use.
Finance – addresses the ways in which individuals and organizations raise and allocate monetary resources over time, taking into account the risks entailed in their projects.
The U.S. Census Bureau's mission "is to serve as the leading source of quality data about the nation's people and economy." Use this tag for data collected and/or published by the US Census Bureau.
For questions about historical data.
The [MIMIC-III (Medical Information Mart for Intensive Care) database](https://mimic.physionet.org/about/mimic/) contains physiologic signals, vital signs time series, and comprehensive clinical data …
For questions related to research.
Wikidata is a project of the Wikimedia foundation related to open data
For questions related to human language. Use 'programming' instead for questions related to programming languages.
UK is short for the United Kingdom, which itself is short for the United Kingdom of Great Britain and Northern Ireland; also called Britain
Transportation is the movement of people, animals and goods from one location to another.
For open data related questions about computer programming, programming languages (such as Python, R, or Java), and application development.
Economics is a social science concerned with the factors that determine the production, distribution, and consumption of goods and services.
Questions related to the US goverment 'College Scorecard', a tool to compare cost and value of higher education institutions.
For questions related to cities and similar municipal levels of government.
Competitive physical activity, for instance competition or tournament results, practice statistics, athletic performance and non-medical physical performance attributes, statistics or data.
For questions about data related to schools, universities, students, teaching.
For questions related to Europe and the European Union.
Metadata is data/information that provides data/information about other data. Metadata is essentially documentation of data.
For questions about data sets that include observations or predictions with a time interval.
Quantifiable information that concerns the age, sex, cultural makeup, or other characteristics of a group or population. Can also include demographic change, the predicted quantitative makeup of a pop…
A comprehensive count of the population.
For questions concerning open data examining global-scale trends and characteristics.
US Department of Labor developer portal, data and APIs