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  2. Data transformation (statistics) - Wikipedia

    en.wikipedia.org/wiki/Data_transformation...

    The logarithm transformation and square root transformation are commonly used for positive data, and the multiplicative inverse transformation (reciprocal transformation) can be used for non-zero data. The power transformation is a family of transformations parameterized by a non-negative value λ that includes the logarithm, square root, and ...

  3. Log-structured merge-tree - Wikipedia

    en.wikipedia.org/wiki/Log-structured_merge-tree

    In computer science, the log-structured merge-tree (also known as LSM tree, or LSMT [1]) is a data structure with performance characteristics that make it attractive for providing indexed access to files with high insert volume, such as transactional log data. LSM trees, like other search trees, maintain key-value pairs. LSM trees maintain data ...

  4. Logarithm - Wikipedia

    en.wikipedia.org/wiki/Logarithm

    The logarithm transformation is a type of data transformation used to bring the empirical ... This makes the Hausdorff dimension of this structure ln(3 ...

  5. Data transformation (computing) - Wikipedia

    en.wikipedia.org/wiki/Data_transformation...

    In computing, data transformation is the process of converting data from one format or structure into another format or structure. It is a fundamental aspect of most data integration [ 1 ] and data management tasks such as data wrangling , data warehousing , data integration and application integration.

  6. Dynamization - Wikipedia

    en.wikipedia.org/wiki/Dynamization

    In computer science, dynamization is the process of transforming a static data structure into a dynamic one. Although static data structures may provide very good functionality and fast queries, their utility is limited because of their inability to grow/shrink quickly, thus making them inapplicable for the solution of dynamic problems, where the input data changes.

  7. Log structure - Wikipedia

    en.wikipedia.org/wiki/Log_structure

    In addition, log structures serve to define the mixed Hodge structure on any smooth complex variety X, by taking a compactification with boundary a normal crossings divisor D, and writing down the corresponding logarithmic de Rham complex. [2] Log objects also naturally appear as the objects at the boundary of moduli spaces, i.e. from ...

  8. Doubly logarithmic tree - Wikipedia

    en.wikipedia.org/wiki/Doubly_logarithmic_tree

    In computer science, a doubly logarithmic tree is a tree where each internal node of height 1, the tree layer above the leaves, has two children, and each internal node of height > has children. Each child of the root contains n {\displaystyle {\sqrt {n}}} leaves. [ 1 ]

  9. Data structure - Wikipedia

    en.wikipedia.org/wiki/Data_structure

    A data structure known as a hash table.. In computer science, a data structure is a data organization and storage format that is usually chosen for efficient access to data. [1] [2] [3] More precisely, a data structure is a collection of data values, the relationships among them, and the functions or operations that can be applied to the data, [4] i.e., it is an algebraic structure about data.