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Usage Share Of Web Browsers
The usage share of web browsers is the portion, often expressed as a percentage, of visitors to a group of web sites that use a particular web browser. Accuracy Measuring browser usage in the number of requests (page hits) made by each user agent can be misleading. Overestimation Not all requests are generated by a user, as a user agent can make requests at regular time intervals without user input. In this case, the user's activity might be overestimated. Some examples: * Certain anti-virus products fake their user agent string to appear to be popular browsers. This is done to trick attack sites that might display clean content to the scanner, but not to the browser.'' The Register'' reported in June 2008 that traffic from AVG Linkscanner, using an IE6 user agent string, outstripped human link clicks by nearly 10 to 1. * A user who revisits a site shortly after changing or upgrading browsers may be double-counted under some methods; overall numbers at the time of a new ...
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StatCounter
StatCounter is a web traffic analysis website started in 1999. Access to basic services is free to use and advanced services can cost between and US$119 a month. StatCounter is based in Dublin, Ireland. The statistics from StatCounter are used to compute web usage share for example. , StatCounter is used on 0.9% of all websites. StatCounter statistics are directly derived from hits—as opposed to unique visitors—from 3 million sites, which use StatCounter, resulting in total hits of more than 15 billion per month. No artificial weightings are used to correct for sampling bias, thus the numbers in the statistics can not be considered to be representative samples. The company was founded by Aodhán Cullen at the age of 16. Cullen received the "Internet Hero" award at the 2008 Eircom Golden Spider Awards. He was also named the 2007 ''BusinessWeek ''Bloomberg Businessweek'', previously known as ''BusinessWeek'', is an American weekly business magazine published fifty time ...
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KHTML
KHTML is a browser engine developed by the KDE project. It is the default engine of the Konqueror browser, but it has not been actively worked on since 2016. Moreover, KHTML will be discontinued for KDE Frameworks 6. Built on the KParts framework and written in C++, KHTML had relatively good support for Web standards during its prime. Engines forked from KHTML are used by some of the world's most widely used browsers, among them Google Chrome, Safari, Opera, Vivaldi, and Microsoft Edge. History Origins KHTML was preceded by an earlier engine called ''khtmlw'' or ''the KDE HTML Widget'', developed by Torben Weis and Martin Jones, which implemented support for HTML 3.2, HTTP 1.0, and HTML frames, but not the W3C DOM, CSS, or JavaScript. KHTML itself came into existence on November 4, 1998, as a fork of the khtmlw library, with some slight refactoring and the addition of Unicode support and changes to support the move to Qt 2. Waldo Bastian was among those who did the ...
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Firefox
Mozilla Firefox, or simply Firefox, is a free and open-source web browser developed by the Mozilla Foundation and its subsidiary, the Mozilla Corporation. It uses the Gecko rendering engine to display web pages, which implements current and anticipated web standards. In November 2017, Firefox began incorporating new technology under the code name " Quantum" to promote parallelism and a more intuitive user interface. Firefox is available for Windows 7 and later versions, macOS, and Linux. Its unofficial ports are available for various Unix and Unix-like operating systems, including FreeBSD, OpenBSD, NetBSD, illumos, and Solaris Unix. It is also available for Android and iOS. However, as with all other iOS web browsers, the iOS version uses the WebKit layout engine instead of Gecko due to platform requirements. An optimized version is also available on the Amazon Fire TV as one of the two main browsers available with Amazon's Silk Browser. Firefox was create ...
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Microsoft Edge
Microsoft Edge is a proprietary, cross-platform web browser created by Microsoft. It was first released in 2015 as part of Windows 10 and Xbox One and later ported to other platforms as a fork of Google's Chromium open-source project: Android and iOS, macOS, older Windows versions (Windows 7 and later), and most recently Linux. It was created as the successor to Internet Explorer (IE). Edge was initially built with Microsoft's own proprietary browser engine, EdgeHTML, and their Chakra JavaScript engine. In late 2018, it was announced that Edge would be completely rebuilt as a Chromium-based browser with Blink and V8 engines. The new Edge was publicly released in January 2020, and on Xbox platforms in 2021. Microsoft has since terminated security support for the original browser (now referred to as Microsoft Edge Legacy), and in Windows 11 it is the default web browser (for compatibility with Google Chrome). In May 2022, according to StatCounter, Microsoft Edge became th ...
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Safari (web Browser)
Safari is a web browser developed by Apple. It is built into macOS, iOS, and iPadOS, and uses Apple's open-source browser engine, WebKit, which was derived from KHTML. Safari was introduced in Mac OS X Panther in January 2003. It was included with the iPhone since the latter's first generation, which came out in 2007. At that time, Safari was the fastest browser on the Mac. Between 2007 and 2012, Apple maintained a Windows version, but abandoned it due to low market share. In 2010, Safari 5 introduced a reader mode, extensions, and developer tools. Safari 11, released in 2017, added Intelligent Tracking Prevention, which uses artificial intelligence to block web tracking. Safari 13 added support Apple Pay, and authentication with FIDO2 security keys. Its interface was redesigned in Safari 15. In May 2022, Safari became the third most popular desktop browser after being overtaken by Microsoft Edge. Safari was then used by 9.61 percent of desktop computers worldwide. ...
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Google Chrome
Google Chrome is a cross-platform web browser developed by Google. It was first released in 2008 for Microsoft Windows, built with free software components from Apple WebKit and Mozilla Firefox. Versions were later released for Linux, macOS, iOS, and also for Android, where it is the default browser. The browser is also the main component of ChromeOS, where it serves as the platform for web applications. Most of Chrome's source code comes from Google's free and open-source software project ''Chromium'', but Chrome is licensed as proprietary freeware. WebKit was the original rendering engine, but Google eventually forked it to create the Blink engine; all Chrome variants except iOS now use Blink. , StatCounter estimates that Chrome has a 67% worldwide browser market share (after peaking at 72.38% in November 2018) on personal computers (PC), is most used on tablets (having surpassed Safari), and is also dominant on smartphones and at 65% across all platforms combined. ...
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Sampling Bias
In statistics, sampling bias is a bias in which a sample is collected in such a way that some members of the intended population have a lower or higher sampling probability than others. It results in a biased sample of a population (or non-human factors) in which all individuals, or instances, were not equally likely to have been selected. If this is not accounted for, results can be erroneously attributed to the phenomenon under study rather than to the method of sampling. Medical sources sometimes refer to sampling bias as ascertainment bias. Ascertainment bias has basically the same definition, but is still sometimes classified as a separate type of bias. Distinction from selection bias Sampling bias is usually classified as a subtype of selection bias, sometimes specifically termed sample selection bias, but some classify it as a separate type of bias. A distinction, albeit not universally accepted, of sampling bias is that it undermines the external validity of a test (th ...
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Weight Function
A weight function is a mathematical device used when performing a sum, integral, or average to give some elements more "weight" or influence on the result than other elements in the same set. The result of this application of a weight function is a weighted sum or weighted average. Weight functions occur frequently in statistics and analysis, and are closely related to the concept of a measure. Weight functions can be employed in both discrete and continuous settings. They can be used to construct systems of calculus called "weighted calculus" and "meta-calculus".Jane Grossma''Meta-Calculus: Differential and Integral'' , 1981. Discrete weights General definition In the discrete setting, a weight function w \colon A \to \R^+ is a positive function defined on a discrete set A, which is typically finite or countable. The weight function w(a) := 1 corresponds to the ''unweighted'' situation in which all elements have equal weight. One can then apply this weight to various co ...
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Unique Visitors
Website popularity is commonly determined using the number of unique users, and the metric is often quoted to potential advertisers or investors. A website's number of unique users is usually measured over a standard period of time, typically a month. Limitations Use of performance indicators like unique visitors/users has been criticized. Greg Harmon of Belden Research inferred that many companies reporting their online performance "may overstate" the number of unique visitors due to the limitations of the metric. This is because an increasing number of people now access websites through multiple physical devices with different IP addresses, and thus may be counted multiple times. Websites that track users using cookies instead of IP addresses are not safe either, as some users regularly delete cookies from their devices, and others may use multiple web browsers to access a single website. This means that for a typical news site, for example, which people might visit more than o ...
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Net Applications
Net Applications is a web analytics firm. The company is commonly known in the web browser development and technology news communities for its global market share statistics. History Since 1999, Net Applications is a source of applications for webmasters and eMarketers. Headquartered in Aliso Viejo, California, Net Applications distributes its services through over 7,000 partners and affiliates. Criticism While the statistics released by the company routinely place operating systems sold by Microsoft (Windows) and Apple (Mac OS X) with a high market share in the desktop computer category (through 2013), Vincent Vizzaccaro (EVP – Marketing and Strategic Alliances, Net Applications, 2002–present) has stated that Microsoft and Apple are among the company's clients. The company has also admitted that their statistics are skewed. See also *Usage share of web browsers *Usage share of operating systems *Web browser *Market share *Browser wars A browser war is competition for ...
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