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  2. pandas (software) - Wikipedia

    en.wikipedia.org/wiki/Pandas_(software)

    [4]: 114 A DataFrame is a 2-dimensional data structure of rows and columns, similar to a spreadsheet, and analogous to a Python dictionary mapping column names (keys) to Series (values), with each Series sharing an index. [4]: 115 DataFrames can be concatenated together or "merged" on columns or indices in a manner similar to joins in SQL.

  3. Row and column vectors - Wikipedia

    en.wikipedia.org/wiki/Row_and_column_vectors

    The transpose (indicated by T) of any row vector is a column vector, and the transpose of any column vector is a row vector: […] = [] and [] = […]. The set of all row vectors with n entries in a given field (such as the real numbers ) forms an n -dimensional vector space ; similarly, the set of all column vectors with m entries forms an m ...

  4. Dataframe - Wikipedia

    en.wikipedia.org/wiki/Dataframe

    Dataframe may refer to: A tabular data structure common to many data processing libraries: pandas (software) § DataFrames; The Dataframe API in Apache Spark; Data frames in the R programming language; Frame (networking)

  5. President-elect Donald Trump notched a 54% approval rating, one of his all-time highest, compared to about 46% who disapprove of him, an Emerson College poll found.

  6. 8 shot, 1 man killed in mass shooting and crash in Baltimore ...

    www.aol.com/1-killed-9-injured-mass-025900918.html

    A Baltimore City man died and nine other people were injured after a shooting and fiery crash in the Baltimore suburb of Towson Tuesday night, authorities said.

  7. Tennessee Onions Are Good Enough To Make You Cry - AOL

    www.aol.com/tennessee-onions-good-enough-cry...

    Add 1/2 c. water to bottom of pan and tightly cover with foil. Bake onions until tender, 75 to 90 minutes (the centers should be easily pierced with a fork or a metal cake tester). Remove from ...

  8. Category:Polars (cataclysmic variable stars) - Wikipedia

    en.wikipedia.org/wiki/Category:Polars...

    Polars, also known as AM Herculis stars, are a type of cataclysmic variable star. Pages in category "Polars (cataclysmic variable stars)" The following 11 pages are in this category, out of 11 total.

  9. Data orientation - Wikipedia

    en.wikipedia.org/wiki/Data_orientation

    Data orientation refers to how tabular data is represented in a linear memory model such as in-disk or in-memory.The two most common representations are column-oriented (columnar format) and row-oriented (row format). [1] [2] The choice of data orientation is a trade-off and an architectural decision in databases, query engines, and numerical ...