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Row-major Order
In computing, row-major order and column-major order are methods for storing multidimensional arrays in linear storage such as random access memory. The difference between the orders lies in which elements of an array are contiguous in memory. In row-major order, the consecutive elements of a row reside next to each other, whereas the same holds true for consecutive elements of a column in column-major order. While the terms allude to the rows and columns of a two-dimensional array, i.e. a matrix, the orders can be generalized to arrays of any dimension by noting that the terms row-major and column-major are equivalent to lexicographic and colexicographic orders, respectively. It is also worth noting that matrices, being commonly represented as collections of row or column vectors, using this approach are effectively stored as consecutive vectors or consecutive vector components. Such ways of storing data are referred to as AoS and SoA respectively. Data layout is critical for c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Row And Column Major Order
Row or ROW may refer to: Exercise * Rowing, or a form of aquatic movement using oars * Row (weight-lifting), a form of weight-lifting exercise Mathematics and informatics * Row vector, a 1 × ''n'' matrix in linear algebra * Row(s) in a table (information), a data arrangement with rows and columns * Row (database), a single, implicitly structured data item in a database table * Tone row, an arrangement of the twelve notes of the chromatic scale Places * Rów, Pomeranian Voivodeship, north Poland * Rów, Warmian-Masurian Voivodeship, north Poland * Rów, West Pomeranian Voivodeship, northwest Poland * Roswell International Air Center's IATA code * Row, a former spelling of Rhu, Dunbartonshire, Scotland * The Row (Lyme, New York), a set of historic homes * The Row, Virginia, an unincorporated community * Rest of the world (RoW) * The Row or The Row Fulton Market, 900 West Randolph, a Chicago Skyscraper on Chicago's Restaurant Row Other * Reality of Wrestling, an American profess ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Speakeasy (computational Environment)
Speakeasy was a numerical computing interactive environment also featuring an interpreted programming language. It was initially developed for internal use at the Physics Division of Argonne National Laboratory by the theoretical physicist Stanley Cohen. He eventually founded Speakeasy Computing Corporation to make the program available commercially. Speakeasy is a very long-lasting numerical package. In fact, the original version of the environment was built around a core dynamic data repository called "Named storage" developed in the early 1960s, while the most recent version has been released in 2006. Speakeasy was aimed to make the computational work of the physicists at the Argonne National Laboratory easier. History ''Speakeasy'' was initially conceived to work on mainframes (the only kind of computers at that time), and was subsequently ported to new platforms ( minicomputers, personal computers) as they became available. The porting of the same code on different pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Java (programming Language)
Java is a High-level programming language, high-level, General-purpose programming language, general-purpose, Memory safety, memory-safe, object-oriented programming, object-oriented programming language. It is intended to let programmers ''write once, run anywhere'' (Write once, run anywhere, WORA), meaning that compiler, compiled Java code can run on all platforms that support Java without the need to recompile. Java applications are typically compiled to Java bytecode, bytecode that can run on any Java virtual machine (JVM) regardless of the underlying computer architecture. The syntax (programming languages), syntax of Java is similar to C (programming language), C and C++, but has fewer low-level programming language, low-level facilities than either of them. The Java runtime provides dynamic capabilities (such as Reflective programming, reflection and runtime code modification) that are typically not available in traditional compiled languages. Java gained popularity sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iliffe Vector
In computer programming, an Iliffe vector, also known as a display, is a data structure used to implement multi-dimensional array data structure, arrays. Data structure An Iliffe vector for an ''n''-dimensional array (where ''n'' ≥ 2) consists of a vector (or 1-dimensional array) of pointer (computer programming), pointers to (''n'' − 1)-dimensional arrays. They are often used to avoid the need for expensive multiplication operations when performing address calculation on an array element. They can also be used to implement jagged arrays, such as triangular arrays, triangular matrix, triangular matrices and other kinds of irregularly shaped arrays. The data structure is named after John Iliffe (computer designer), John K. Iliffe. Their disadvantages include the need for multiple chained pointer indirections to access an element, and the extra work required to determine the next row in an ''n''-dimensional array to allow an optimising compiler to prefetch it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rasdaman
rasdaman ("raster data manager") is an Array DBMS, that is: a Database Management System which adds capabilities for storage and retrieval of massive multi-dimensional arrays, such as sensor, image, simulation, and statistics data. A frequently used synonym to arrays is ''raster data'', such as in 2-D raster graphics; this actually has motivated the name ''rasdaman''. However, rasdaman has no limitation in the number of dimensions - it can serve, for example, 1-D measurement data, 2-D satellite imagery, 3-D x/y/t image time series and x/y/z exploration data, 4-D ocean and climate data, and even beyond spatio-temporal dimensions. History In 1989, Peter Baumann started a research on database support for images, then at Fraunhofer Computer Graphics Institute. Following an in-depth investigation on raster data formalizations in imaging, in particular the AFATL Image Algebra, he established a database model for multi-dimensional arrays, including a data model and declarative que ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yorick (programming Language)
Yorick is an interpreted programming language designed for numerics, graph plotting, and steering large scientific simulation codes. It is quite fast due to array syntax, and extensible via C or Fortran routines. It was created in 1996 by David H. Munro of Lawrence Livermore National Laboratory. Features Indexing Yorick is good at manipulating elements in N-dimensional arrays conveniently with its powerful syntax. Several elements can be accessed all at once: > x= ,2,3,4,5,6 > x ,2,3,4,5,6> x(3:6) ,4,5,6> x(3:6:2) ,5> x(6:3:-2) ,4 ;Arbitrary elements > x= 1,2,3 ,5,6 > x 1,2,3 ,5,6 > x( ,1 ,2 ,4">,1 list=where(1 list [2,3,4,5,6> y=x(list) > y [2,3,4,5,6">,4 > list=where(1 list [2,3,4,5,6">,4">,1 list=where(1 list [2,3,4,5,6> y=x(list) > y [2,3,4,5,6 ;Pseudo-index Like "theading" in Perl Data Language">PDL and "broadcasting" in Numpy">,4 > list=where(1 list [2,3,4,5,6> y=x(list) > y [2,3,4,5,6 ;Pseudo-index Like "theading" in Perl Data Language">PDL and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scilab
Scilab is a free and open-source, cross-platform numerical computational package and a high-level, numerically oriented programming language. It can be used for signal processing, statistical analysis, image enhancement, fluid dynamics simulations, numerical optimization, and modeling, simulation of explicit and implicit dynamical systems and (if the corresponding toolbox is installed) symbolic manipulations. Scilab is one of the two major open-source alternatives to MATLAB, the other one being GNU Octave. Scilab puts less emphasis on syntactic compatibility with MATLAB than Octave does, but it is similar enough that some authors suggest that it is easy to transfer skills between the two systems. Introduction Scilab is a high-level, numerically oriented programming language. The language provides an interpreted programming environment, with matrices as the main data type. By using matrix-based computation, dynamic typing, and automatic memory management, many numerical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
R (programming Language)
R is a programming language for statistical computing and Data and information visualization, data visualization. It has been widely adopted in the fields of data mining, bioinformatics, data analysis, and data science. The core R language is extended by a large number of R package, software packages, which contain Reusability, reusable code, documentation, and sample data. Some of the most popular R packages are in the tidyverse collection, which enhances functionality for visualizing, transforming, and modelling data, as well as improves the ease of programming (according to the authors and users). R is free and open-source software distributed under the GNU General Public License. The language is implemented primarily in C (programming language), C, Fortran, and Self-hosting (compilers), R itself. Preprocessor, Precompiled executables are available for the major operating systems (including Linux, MacOS, and Microsoft Windows). Its core is an interpreted language with a na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
S-PLUS
S-PLUS is a commercial implementation of the S (programming language), S programming language sold by TIBCO Software Inc. It features object-oriented programming capabilities and advanced analytical algorithms. Its statistical analysis capabilities are commonly used by Econometrics, econometricians. The S-PLUS FinMetrics software package was developed for econometric time series analysis. Due to the increasing popularity of the open source S successor R (programming language), R, TIBCO Software released thTIBCO Enterprise Runtime for R (TERR)as an alternative R interpreter. It is available on Windows and UNIX operating systems. Historical timeline In 1988, S-PLUS was first developed and released by a Seattle-based start-up company called Statistical Sciences, Inc. The company's founder and sole owner is R. Douglas Martin, professor of statistics at the University of Washington, Seattle. Martin originally learned S while working at Bell Laboratories, where the S language was or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
S (programming Language)
S is a statistical programming language developed primarily by John Chambers (statistician), John Chambers and (in earlier versions) Rick Becker, Trevor Hastie, William S. Cleveland, William Cleveland and Allan Wilks of Bell Labs, Bell Laboratories. The aim of the language, as expressed by John Chambers, is "to turn ideas into software, quickly and faithfully". It was formerly widely used by academic researchers., but has now been superseded by the partially backwards compatible R (programming language), R language, a part of the GNU free software project. S-PLUS was a widely used commercial implementation of S that was formerly sold by TIBCO Software. History "Old S" S is one of several statistical computing languages that were designed at Bell Laboratories, and first took form between 1975–1976. Up to that time, much of the statistical computing was done by directly calling Fortran subroutines; however, S was designed to offer an alternate and more interactive approach, moti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Julia (programming Language)
Julia is a high-level programming language, high-level, general-purpose programming language, general-purpose dynamic programming language, dynamic programming language, designed to be fast and productive, for e.g. data science, artificial intelligence, machine learning, modeling and simulation, most commonly used for numerical analysis and computational science. Distinctive aspects of Julia's design include a type system with parametric polymorphism and the use of multiple dispatch as a core programming paradigm, a default just-in-time compilation, just-in-time (JIT) compiler (with support for ahead-of-time compilation) and an tracing garbage collection, efficient (multi-threaded) garbage collection implementation. Notably Julia does not support classes with encapsulated methods and instead it relies on structs with generic methods/functions not tied to them. By default, Julia is run similarly to scripting languages, using its runtime, and allows for read–eval–print loop, i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GNU Octave
GNU Octave is a scientific programming language for scientific computing and numerical computation. Octave helps in solving linear and nonlinear problems numerically, and for performing other numerical experiments using a language that is mostly compatible with MATLAB. It may also be used as a Batch processing, batch-oriented language. As part of the GNU Project, it is free software under the terms of the GNU General Public License. History The project was conceived around 1988. At first it was intended to be a companion to a chemical reactor design course. Full development was started by John W. Eaton in 1992. The first alpha release dates back to 4 January 1993 and on 17 February 1994 version 1.0 was released. Version 9.2.0 was released on 7 June 2024. The program is named after Octave Levenspiel, a former professor of the principal author. Levenspiel was known for his ability to perform quick back-of-the-envelope calculations. Development history Developments In addition ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
