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  2. Associative array - Wikipedia

    en.wikipedia.org/wiki/Associative_array

    [3] [4] [5] [11] In separate chaining, the array does not store the value itself but stores a pointer to another container, usually an association list, that stores all the values matching the hash. By contrast, in open addressing, if a hash collision is found, the table seeks an empty spot in an array to store the value in a deterministic ...

  3. Spark (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Spark_(mathematics)

    Equivalently, the spark of a matrix is the size of its smallest circuit (a subset of column indices such that = has a nonzero solution, but every subset of it does not [1]). If all the columns are linearly independent, s p a r k ( A ) {\displaystyle \mathrm {spark} (A)} is usually defined to be m + 1 {\displaystyle m+1} (if A {\displaystyle A ...

  4. Aggregate function - Wikipedia

    en.wikipedia.org/wiki/Aggregate_function

    Sum; Others include: Nanmean (mean ignoring NaN values, also known as "nil" or "null") Stddev; Formally, an aggregate function takes as input a set, a multiset (bag), or a list from some input domain I and outputs an element of an output domain O. [1] The input and output domains may be the same, such as for SUM, or may be different, such as ...

  5. k-means clustering - Wikipedia

    en.wikipedia.org/wiki/K-means_clustering

    When for example applying k-means with a value of = onto the well-known Iris flower data set, the result often fails to separate the three Iris species contained in the data set. With k = 2 {\displaystyle k=2} , the two visible clusters (one containing two species) will be discovered, whereas with k = 3 {\displaystyle k=3} one of the two ...

  6. Here are 12 well-known companies that went bankrupt in 2024 - AOL

    www.aol.com/finance/12-well-known-companies-went...

    In court filings, True Value said it faces a significant cash crunch as the housing market has stalled and consumers have become far more picky about discretionary purchases like hardware.

  7. Word2vec - Wikipedia

    en.wikipedia.org/wiki/Word2vec

    The idea of skip-gram is that the vector of a word should be close to the vector of each of its neighbors. The idea of CBOW is that the vector-sum of a word's neighbors should be close to the vector of the word. In the original publication, "closeness" is measured by softmax, but the framework allows other ways to measure closeness.

  8. Champion cyclist pleads guilty over Olympian wife's car death

    www.aol.com/champion-cyclist-pleads-guilty-over...

    Former world champion cyclist Rohan Dennis has pleaded guilty over a car incident in Australia which killed his wife, fellow Olympian Melissa Hoskins.

  9. Teacher Who Got Pregnant After Raping Boy, 12, Gets 25 ... - AOL

    www.aol.com/lifestyle/teacher-got-pregnant...

    A former Tennessee teacher who got pregnant after raping a 12-year-old boy pleaded guilty and has been sentenced to 25 years in prison with no parole. On Dec. 20, Alissa McCommon, 39, of Covington ...