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  2. pandas (software) - Wikipedia

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

    As such, a DataFrame can be thought of as having two indices: one column-based and one row-based. Because column names are stored as an index, these are not required to be unique. [9]: 103–105 If data is a Series, then data['a'] returns all values with the index value of a. However, if data is a DataFrame, then data['a'] returns all values in ...

  3. Register renaming - Wikipedia

    en.wikipedia.org/wiki/Register_renaming

    The rename file must have a read port for every input of every instruction renamed every cycle, and a write port for every output of every instruction renamed every cycle. Because the size of a register file generally grows as the square of the number of ports, the rename file is usually physically large and consumes significant power.

  4. Rename (relational algebra) - Wikipedia

    en.wikipedia.org/wiki/Rename_(relational_algebra)

    In relational algebra, a rename is a unary operation written as / where: . R is a relation; a and b are attribute names; b is an attribute of R; The result is identical to R except that the b attribute in all tuples is renamed to a. [1]

  5. Select (SQL) - Wikipedia

    en.wikipedia.org/wiki/Select_(SQL)

    SELECT list is the list of columns or SQL expressions to be returned by the query. This is approximately the relational algebra projection operation. AS optionally provides an alias for each column or expression in the SELECT list. This is the relational algebra rename operation. FROM specifies from which table to get the data. [3]

  6. RIS (file format) - Wikipedia

    en.wikipedia.org/wiki/RIS_(file_format)

    There are two major versions of the RIS specification, one from 2001, and one from the end of 2011 with different lists of tags for each type of record, sometimes with different meanings. [4] [5] [12] [13] Below is an excerpt of the main RIS tags, from both versions. Except for TY - and ER -, order of tags is free and their inclusion is optional.

  7. List of IBM products - Wikipedia

    en.wikipedia.org/wiki/List_of_IBM_products

    Products, services, and subsidiaries have been offered from International Business Machines (IBM) Corporation and its predecessor corporations since the 1890s. [1] This list comprises those offerings and is eclectic; it includes, for example, the AN/FSQ-7, which was not a product in the sense of offered for sale, but was a product in the sense of manufactured—produced by the labor of IBM.

  8. Spline interpolation - Wikipedia

    en.wikipedia.org/wiki/Spline_interpolation

    For the elastic rulers being the model for the spline interpolation, one has that to the left of the left-most "knot" and to the right of the right-most "knot" the ruler can move freely and will therefore take the form of a straight line with q′′ = 0.

  9. Wikipedia:Village pump (technical) - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Village_pump...

    The provided "IP" value is only the one that your computer uses to talk to the VPN (and sometimes wrong), not the one used for the VPN to talk to Wikipedia/external internet - this requires testing to uncover. The bot will iterate through each config file and use OpenVPN to test if it can connect.