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  2. Table (database) - Wikipedia

    en.wikipedia.org/wiki/Table_(database)

    In a database, a table is a collection of related data organized in table format; consisting of columns and rows.. In relational databases, and flat file databases, a table is a set of data elements (values) using a model of vertical columns (identifiable by name) and horizontal rows, the cell being the unit where a row and column intersect. [1]

  3. 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 .

  4. Column family - Wikipedia

    en.wikipedia.org/wiki/Column_family

    In analogy with relational databases, a column family is as a "table", each key-value pair being a "row". Each column is a tuple consisting of a column name, a value, and a timestamp. In a relational database table, this data would be grouped together within a table with other non-related data. Two types of column families exist:

  5. Count-distinct problem - Wikipedia

    en.wikipedia.org/wiki/Count-distinct_problem

    In computer science, the count-distinct problem [1] (also known in applied mathematics as the cardinality estimation problem) is the problem of finding the number of distinct elements in a data stream with repeated elements. This is a well-known problem with numerous applications.

  6. Woman Rescues Hundreds Of Disabled Pups, Builds Them A Dog ...

    www.aol.com/woman-rescues-hundreds-disabled-pups...

    Image credits: kopekvelisiii / Facebook The woman created a non-profit organization in the countryside, which now gives a second chance at life to over 800 dogs who get to explore and play happily

  7. 'Nothing nefarious': Biden seeks to reassure US over drone ...

    www.aol.com/nothing-nefarious-biden-seeks...

    A puzzling flurry of apparent drone sightings along the US east coast is "nothing nefarious", says President Joe Biden. The sightings in recent weeks have occurred in New Jersey and a number of ...

  8. How To Find The Right Type Of Therapy For You - AOL

    www.aol.com/type-therapy-120000234.html

    Experts share about all the different therapy types and formats that you can access for mental health help: CBT, EMDR, walk-and-talk, and more.

  9. Flajolet–Martin algorithm - Wikipedia

    en.wikipedia.org/wiki/Flajolet–Martin_algorithm

    Within each group use the mean for aggregating together the results, and finally take the median of the group estimates as the final estimate. [ 5 ] The 2007 HyperLogLog algorithm splits the multiset into subsets and estimates their cardinalities, then it uses the harmonic mean to combine them into an estimate for the original cardinality.