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  2. Python syntax and semantics - Wikipedia

    en.wikipedia.org/wiki/Python_syntax_and_semantics

    Python sets are very much like mathematical sets, and support operations like set intersection and union. Python also features a frozenset class for immutable sets, see Collection types. Dictionaries (class dict) are mutable mappings tying keys and corresponding values. Python has special syntax to create dictionaries ({key: value})

  3. Singleton pattern - Wikipedia

    en.wikipedia.org/wiki/Singleton_pattern

    In multithreaded programs, this can cause race conditions that result in the creation of multiple instances. The following Java 5+ example [ 6 ] is a thread-safe implementation, using lazy initialization with double-checked locking .

  4. Bag-of-words model - Wikipedia

    en.wikipedia.org/wiki/Bag-of-words_model

    It disregards word order (and thus most of syntax or grammar) but captures multiplicity. The bag-of-words model is commonly used in methods of document classification where, for example, the (frequency of) occurrence of each word is used as a feature for training a classifier. [1] It has also been used for computer vision. [2]

  5. Word2vec - Wikipedia

    en.wikipedia.org/wiki/Word2vec

    The word embedding approach is able to capture multiple different degrees of similarity between words. Mikolov et al. (2013) [ 26 ] found that semantic and syntactic patterns can be reproduced using vector arithmetic.

  6. Function (computer programming) - Wikipedia

    en.wikipedia.org/wiki/Function_(computer...

    Enabling reuse of code across multiple programs; Dividing a large programming task among various programmers or various stages of a project; Hiding implementation details from users of the function; Improving readability of code by replacing a block of code with a function call where a descriptive function name serves to describe the block of ...

  7. Data structure alignment - Wikipedia

    en.wikipedia.org/wiki/Data_structure_alignment

    Word, which means a segment can only be located at an address that is a multiple of two, starting from address 0H. […] Paragraph, which means a segment can only be located at an address that is a multiple of 16, starting from address 0. […] Page, which means a segment can only be located at an address that is a multiple of 256, starting ...

  8. Instance selection - Wikipedia

    en.wikipedia.org/wiki/Instance_selection

    For example, the algorithms LDIS, [6] CDIS [7] and XLDIS [8] select the densest instances in a given arbitrary neighborhood. The selected instances can include both, border and internal instances. The LDIS and CDIS algorithms are very simple and select subsets that are very representative of the original dataset.

  9. Block (programming) - Wikipedia

    en.wikipedia.org/wiki/Block_(programming)

    In computer programming, a block or code block or block of code is a lexical structure of source code which is grouped together. Blocks consist of one or more declarations and statements . A programming language that permits the creation of blocks, including blocks nested within other blocks, is called a block-structured programming language .