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Canonicalization
In computer science, canonicalization (sometimes standardization or Normalization (statistics), normalization) is a process for converting data that has more than one possible representation into a "standard", "normal", or canonical form. This can be done to compare different representations for equivalence, to count the number of distinct data structures, to improve the efficiency of various algorithms by eliminating repeated calculations, or to make it possible to impose a meaningful sorting order. Usage cases Filenames Files in file systems may in most cases be accessed through multiple filenames. For instance in Unix-like systems, the string "/./" can be replaced by "/". In the C standard library, the function realpath() performs this task. Other operations performed by this function to canonicalize filenames are the handling of /.. components referring to parent directories, simplification of sequences of multiple slashes, removal of trailing slashes, and the resoluti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canonical Form
In mathematics and computer science, a canonical, normal, or standard form of a mathematical object is a standard way of presenting that object as a mathematical expression. Often, it is one which provides the simplest representation of an object and allows it to be identified in a unique way. The distinction between "canonical" and "normal" forms varies from subfield to subfield. In most fields, a canonical form specifies a ''unique'' representation for every object, while a normal form simply specifies its form, without the requirement of uniqueness. The canonical form of a positive integer in decimal representation is a finite sequence of digits that does not begin with zero. More generally, for a class of objects on which an equivalence relation is defined, a canonical form consists in the choice of a specific object in each class. For example: *Jordan normal form is a canonical form for matrix similarity. *The row echelon form is a canonical form, when one considers as equ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canonical XML
Canonical XML is a normal form of XML, intended to allow relatively simple comparison of pairs of XML documents for equivalence; for this purpose, the Canonical XML transformation removes non-meaningful differences between the documents. Any XML document can be converted to Canonical XML. For example, XML permits whitespace to occur at various points within start-tags, and attributes to be specified in any order. Such differences are seldom if ever used to convey meaning, and so these forms are generally considered equivalent: <p class="a" secure="1"> <p secure = "1" class='a' > In converting an arbitrary XML document to Canonical XML, attributes are encoded in a normative order (alphabetical by name), and with normative spacing and quoting (though with all namespace declarations placed ahead of regular attributes, and namespaced attributes sorted by namespace rather than prefix or qualified name). Thus, the second form above would be converted ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canonical Link Element
A canonical link element is an HTML element that helps webmasters prevent duplicate content issues in search engine optimization by specifying the " canonical" or "preferred" version of a web page. It is described in RFC 6596, which went live in April 2012. Purpose A major problem for search engines is to determine the original source for documents that are available on multiple URLs. Content duplication can happen in many ways, including: * Duplication due to GET-parameters * Duplication with multiple URLs due to CMS * Duplication due to accessibility on different hosts/protocols * Duplication due to print versions of websites Duplicate content issues occur when the same content is accessible from multiple URLs. For example, would be considered by search engines to be an entirely different page from , even though both URLs may reference the same content. In February 2009, Google, Yahoo and Microsoft announced support for the canonical link element, which can be inse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
URL Canonicalization
A canonical link element is an HTML element that helps webmasters prevent duplicate content issues in search engine optimization by specifying the " canonical" or "preferred" version of a web page. It is described in RFC 6596, which went live in April 2012. Purpose A major problem for search engines is to determine the original source for documents that are available on multiple URLs. Content duplication can happen in many ways, including: * Duplication due to GET-parameters * Duplication with multiple URLs due to CMS * Duplication due to accessibility on different hosts/protocols * Duplication due to print versions of websites Duplicate content issues occur when the same content is accessible from multiple URLs. For example, would be considered by search engines to be an entirely different page from , even though both URLs may reference the same content. In February 2009, Google, Yahoo and Microsoft announced support for the canonical link element, which can be inserte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canonical Link Element
A canonical link element is an HTML element that helps webmasters prevent duplicate content issues in search engine optimization by specifying the " canonical" or "preferred" version of a web page. It is described in RFC 6596, which went live in April 2012. Purpose A major problem for search engines is to determine the original source for documents that are available on multiple URLs. Content duplication can happen in many ways, including: * Duplication due to GET-parameters * Duplication with multiple URLs due to CMS * Duplication due to accessibility on different hosts/protocols * Duplication due to print versions of websites Duplicate content issues occur when the same content is accessible from multiple URLs. For example, would be considered by search engines to be an entirely different page from , even though both URLs may reference the same content. In February 2009, Google, Yahoo and Microsoft announced support for the canonical link element, which can be inse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer Science
Computer science is the study of computation, information, and automation. Computer science spans Theoretical computer science, theoretical disciplines (such as algorithms, theory of computation, and information theory) to Applied science, applied disciplines (including the design and implementation of Computer architecture, hardware and Software engineering, software). Algorithms and data structures are central to computer science. The theory of computation concerns abstract models of computation and general classes of computational problem, problems that can be solved using them. The fields of cryptography and computer security involve studying the means for secure communication and preventing security vulnerabilities. Computer graphics (computer science), Computer graphics and computational geometry address the generation of images. Programming language theory considers different ways to describe computational processes, and database theory concerns the management of re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Single Source Of Truth
In information science and information technology, single source of truth (SSOT) architecture, or single point of truth (SPOT) architecture, for information systems is the practice of structuring information models and associated data schemas such that every data element is mastered (or edited) in only one place, providing data normalization to a canonical form (for example, in database normalization or content transclusion). There are several scenarios with respect to copies and updates: * The master data is never copied and instead only references to it are made; this means that all reads and updates go directly to the SSOT. * The master data is copied but the copies are only read and only the master data is updated; if requests to read data are only made on copies, this is an instance of CQRS. *The master data is copied and the copies are updated; this needs a reconciliation mechanism when there are concurrent updates. **Updates on copies can be thrown out whenever a co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lexicography
Lexicography is the study of lexicons and the art of compiling dictionaries. It is divided into two separate academic disciplines: * Practical lexicography is the art or craft of compiling, writing and editing dictionaries. * Theoretical lexicography is the scholarly study of semantic, orthography, orthographic, syntagma (linguistics), syntagmatic and paradigmatic features of lexemes of the lexicon (vocabulary) of a language, developing theories of dictionary components and structures linking the data in dictionaries, the needs for information by users in specific types of situations, and how users may best access the data incorporated in printed and Electronic dictionary, electronic dictionaries. This is sometimes referred to as "metalexicography". There is some disagreement on the definition of lexicology, as distinct from lexicography. Some use "lexicology" as a synonym for theoretical lexicography; others use it to mean a branch of linguistics pertaining to the inventor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morphology (linguistics)
In linguistics, morphology is the study of words, including the principles by which they are formed, and how they relate to one another within a language. Most approaches to morphology investigate the structure of words in terms of morphemes, which are the smallest units in a language with some independent meaning. Morphemes include roots that can exist as words by themselves, but also categories such as affixes that can only appear as part of a larger word. For example, in English the root ''catch'' and the suffix ''-ing'' are both morphemes; ''catch'' may appear as its own word, or it may be combined with ''-ing'' to form the new word ''catching''. Morphology also analyzes how words behave as parts of speech, and how they may be inflected to express grammatical categories including number, tense, and aspect. Concepts such as productivity are concerned with how speakers create words in specific contexts, which evolves over the history of a language. The basic fields of ling ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Noindex
The noindex value of an HTML robots meta tag requests that automated Internet bots avoid Search engine indexing, indexing a web page.Robots and the META element Official W3 specification It is also a value of the HTTP response header X-Robots-Tag. Reasons why one might want to use this meta tag include advising robots not to index a very large database, web pages that are very transitory, web pages that are under development, web pages that one wishes to keep slightly more private, or the printer and mobile-friendly versions of pages. Since the burden of honoring a website's noindex tag lies with the author of the search robot, sometimes these tags are ignored. Also the interpretation of the noindex tag is sometimes slightly different from one search engine company to the next. Noindexing entire ...
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Search Engine Optimization
Search engine optimization (SEO) is the process of improving the quality and quantity of Web traffic, website traffic to a website or a web page from web search engine, search engines. SEO targets unpaid search traffic (usually referred to as "Organic search, organic" results) rather than direct traffic, referral traffic, social media traffic, or Online advertising, paid traffic. Unpaid search engine traffic may originate from a variety of kinds of searches, including image search, video search, academic databases and search engines, academic search, news search, and industry-specific vertical search engines. As an Internet marketing strategy, SEO considers how search engines work, the computer-programmed algorithms that dictate search engine results, what people search for, the actual search queries or Keyword research, keywords typed into search engines, and which search engines are preferred by a target audience. SEO is performed because a website will receive more visito ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landing Page
In online marketing, a landing page, sometimes known as a "lead capture page", "single property page", "static page", "squeeze page" or a "destination page", is a single web page that appears in response to clicking on a search engine optimized search result, marketing promotion, marketing email or an online advertisement. The landing page will usually display directed sales copy that is a logical extension of the advertisement, search result or link. Landing pages are used for lead generation. The actions that a visitor takes on a landing page are what determine an advertiser's conversion rate. A landing page may be part of a microsite or a single page within an organization's main web site. Landing pages are often linked to social media, e-mail campaigns, search engine marketing campaigns, high-quality articles or "affiliate account" in order to enhance the effectiveness of the advertisements. The general goal of a landing page is to convert site visitors into sales or l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
