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  2. Wide and narrow data - Wikipedia

    en.wikipedia.org/wiki/Wide_and_narrow_data

    Many statistical and data processing systems have functions to convert between these two presentations, for instance the R programming language has several packages such as the tidyr package. The pandas package in Python implements this operation as "melt" function which converts a wide table to a narrow one. The process of converting a narrow ...

  3. Smoothsort - Wikipedia

    en.wikipedia.org/wiki/Smoothsort

    In computer science, smoothsort is a comparison-based sorting algorithm.A variant of heapsort, it was invented and published by Edsger Dijkstra in 1981. [1] Like heapsort, smoothsort is an in-place algorithm with an upper bound of O(n log n) operations (see big O notation), [2] but it is not a stable sort.

  4. Hilbert R-tree - Wikipedia

    en.wikipedia.org/wiki/Hilbert_R-tree

    Algorithm Insert(node Root, rect r): /* Inserts a new rectangle r in the Hilbert R-tree. h is the Hilbert value of the rectangle*/ I1. Find the appropriate leaf node: Invoke ChooseLeaf(r, h) to select a leaf node L in which to place r. I2. Insert r in a leaf node L: If L has an empty slot, insert r in L in the

  5. pandas (software) - Wikipedia

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

    Pandas (styled as pandas) is a software library written for the Python programming language for data manipulation and analysis. In particular, it offers data structures and operations for manipulating numerical tables and time series .

  6. Sorting algorithm - Wikipedia

    en.wikipedia.org/wiki/Sorting_algorithm

    A sorting algorithm is stable if whenever there are two records R and S with the same key, and R appears before S in the original list, then R will always appear before S in the sorted list. When equal elements are indistinguishable, such as with integers, or more generally, any data where the entire element is the key, stability is not an issue.

  7. College Football Playoff quarterfinal schedule, matchups ...

    www.aol.com/sports/college-football-playoff-odds...

    Here are the title odds for each of the eight remaining teams, along with an early look at the lines and totals for each of the four quarterfinal matchups. College Football Playoff odds Texas (+300)

  8. Sort your emails in AOL Mail

    help.aol.com/articles/sort-your-emails-in-aol-mail

    Sorting your emails from your folders has never been easier in AOL Mail. Use the sorting feature regardless of the folder you are in to rearrange the emails and find the ones important, click on Sort on top right of your emails list and choose the option that best suits your need. • Date - Newest on top. • Date - Oldest on top.

  9. Comparison sort - Wikipedia

    en.wikipedia.org/wiki/Comparison_sort

    Sorting a set of unlabelled weights by weight using only a balance scale requires a comparison sort algorithm. A comparison sort is a type of sorting algorithm that only reads the list elements through a single abstract comparison operation (often a "less than or equal to" operator or a three-way comparison) that determines which of two elements should occur first in the final sorted list.