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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. Polar code (coding theory) - Wikipedia

    en.wikipedia.org/wiki/Polar_code_(coding_theory)

    In information theory, polar codes are a linear block error-correcting codes. The code construction is based on a multiple recursive concatenation of a short kernel code which transforms the physical channel into virtual outer channels.

  4. File:Polar coordinates integration Riemann sum.svg - Wikipedia

    en.wikipedia.org/wiki/File:Polar_coordinates...

    The following other wikis use this file: Usage on af.wikipedia.org Poolkoördinatestelsel; Usage on ast.wikipedia.org Coordenaes polares; Usage on ba.wikipedia.org

  5. US agency warns extended government shutdown could lead to ...

    www.aol.com/news/us-agency-warns-extended...

    By David Shepardson. WASHINGTON (Reuters) - The head of the Transportation Security Administration on Thursday warned that an extended partial U.S. government shutdown could lead to longer wait ...

  6. Massachusetts police charge 3 teenagers in alleged assault of ...

    www.aol.com/massachusetts-police-charge-3...

    Police responded to report of an assault during a party in a wooded area in Gloucester, approximately 38 miles northeast of Boston, on Aug. 30, according to the press release.

  7. Wisconsin school shooting press conference: How to watch ...

    www.aol.com/news/wisconsin-school-shooting-press...

    A news conference was scheduled for 3:30 p.m. ET. 'Sad day': Live updates on shooting at Madison, Wisconsin school . How to watch Madison, Wisconsin school shooting.

  8. Line element - Wikipedia

    en.wikipedia.org/wiki/Line_element

    The coordinate-independent definition of the square of the line element ds in an n-dimensional Riemannian or Pseudo Riemannian manifold (in physics usually a Lorentzian manifold) is the "square of the length" of an infinitesimal displacement [2] (in pseudo Riemannian manifolds possibly negative) whose square root should be used for computing curve length: = = (,) where g is the metric tensor ...

  9. Tips pour in over 5,000 drone sightings. Reason to worry ...

    www.aol.com/tips-pour-over-5-000-131033198.html

    Editor's Note: This page is a summary of news on drone sightings for Tuesday, Dec. 17. For the latest news, view our story for Wednesday, Dec. 18. The FBI has received tips involving over 5,000 ...

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