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  2. Dataframe - Wikipedia

    en.wikipedia.org/wiki/Dataframe

    A tabular data structure common to many data processing libraries: ... Data frames in the R programming language; Frame (networking) This page was last edited on ...

  3. R (programming language) - Wikipedia

    en.wikipedia.org/wiki/R_(programming_language)

    R is a programming language for statistical computing and data visualization. It has been adopted in the fields of data mining, bioinformatics and data analysis. [9] The core R language is augmented by a large number of extension packages, containing reusable code, documentation, and sample data. R software is open-source and free software.

  4. Resource Description Framework - Wikipedia

    en.wikipedia.org/wiki/Resource_Description_Framework

    The Resource Description Framework (RDF) is a method to describe and exchange graph data. It was originally designed as a data model for metadata by the World Wide Web Consortium (W3C). It provides a variety of syntax notations and formats, of which the most widely used is Turtle (Terse RDF Triple Language).

  5. Data - Wikipedia

    en.wikipedia.org/wiki/Data

    Data are commonly used in scientific research, economics, and virtually every other form of human organizational activity. Examples of data sets include price indices (such as the consumer price index), unemployment rates, literacy rates, and census data. In this context, data represent the raw facts and figures from which useful information ...

  6. Data model - Wikipedia

    en.wikipedia.org/wiki/Data_model

    Overview of a data-modeling context: Data model is based on Data, Data relationship, Data semantic and Data constraint. A data model provides the details of information to be stored, and is of primary use when the final product is the generation of computer software code for an application or the preparation of a functional specification to aid a computer software make-or-buy decision.

  7. Cardinality (data modeling) - Wikipedia

    en.wikipedia.org/wiki/Cardinality_(data_modeling)

    Within data modelling, cardinality is the numerical relationship between rows of one table and rows in another. Common cardinalities include one-to-one, one-to-many, and many-to-many. Cardinality can be used to define data models as well as analyze entities within datasets.

  8. Frame - Wikipedia

    en.wikipedia.org/wiki/Frame

    Frame (artificial intelligence), machine-usable formalizations of concepts or schemata that can be used for knowledge representation; Frame (networking), a data transmission unit or network packet that includes frame synchronization information; Distribution frame, in telecommunications; Mainframe computer; Page frame, an available chunk of memory

  9. Frame of reference - Wikipedia

    en.wikipedia.org/wiki/Frame_of_reference

    Sometimes frames are distinguished by the scale of their observations, as in macroscopic and microscopic frames of reference. [2] In this article, the term observational frame of reference is used when emphasis is upon the state of motion rather than upon the coordinate choice or the character of the observations or observational apparatus. In ...