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  2. pandas (software) - Wikipedia

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

    Pandas supports hierarchical indices with multiple values per data point. An index with this structure, called a "MultiIndex", allows a single DataFrame to represent multiple dimensions, similar to a pivot table in Microsoft Excel. [4]: 147–148 Each level of a MultiIndex can be given a unique name.

  3. Index mapping - Wikipedia

    en.wikipedia.org/wiki/Index_mapping

    Index mapping (or direct addressing, or a trivial hash function) in computer science describes using an array, in which each position corresponds to a key in the universe of possible values. [1] The technique is most effective when the universe of keys is reasonably small, such that allocating an array with one position for every possible key ...

  4. Index notation - Wikipedia

    en.wikipedia.org/wiki/Index_notation

    The compiler computes the total number of memory cells occupied by each row, uses the first index to find the address of the desired row, and then uses the second index to find the address of the desired element in the row. When the third method is used, the programmer declares the table to be an array of pointers, like in elementtype ...

  5. Database index - Wikipedia

    en.wikipedia.org/wiki/Database_index

    A database index is a data structure that improves the speed of data retrieval operations on a database table at the cost of additional writes and storage space to maintain the index data structure. Indexes are used to quickly locate data without having to search every row in a database table every time said table is accessed.

  6. 4.78 tons of cocaine, $193,000 in cash found in shipping ...

    www.aol.com/nearly-5-tons-cocaine-found...

    Belgian authorities said on Friday they had seized almost five tons of cocaine stashed in shipping containers at Antwerp port, as part of a cross-border investigation into a drug-trafficking ring.

  7. I’ve been scammed — will my bank refund the money? - AOL

    www.aol.com/finance/do-banks-refund-scammed...

    Whether your bank refunds money lost in a scam depends on several factors: the type of scam, how you sent the funds, the bank’s policies and if you authorized the transaction. Learn more in our ...

  8. Explainer-Who are the immigrants who could be targeted in ...

    www.aol.com/news/explainer-immigrants-could...

    President-elect Donald Trump plans to launch a mass deportation operation targeting millions of immigrants living in the U.S. illegally and with temporary protections once he takes office on Jan ...

  9. Multi-index notation - Wikipedia

    en.wikipedia.org/wiki/Multi-index_notation

    Note that, since x + y is a vector and α is a multi-index, the expression on the left is short for (x 1 + y 1) α 1 ⋯(x n + y n) α n. Leibniz formula For smooth functions f {\textstyle f} and g {\textstyle g} , ∂ α ( f g ) = ∑ ν ≤ α ( α ν ) ∂ ν f ∂ α − ν g . {\displaystyle \partial ^{\alpha }(fg)=\sum _{\nu \leq \alpha ...