kik

Artificial intelligence was founded as an academic discipline in 1956.

This growth accelerated further after 2017 with the transformer architecture.

The field went through multiple cycles of optimism throughout its history, followed by periods of disappointment and loss of funding, known as AI winters.

== Goals == The general problem of simulating (or creating) intelligence has been broken down into subproblems.

Statistics and mathematical optimisation methods compose the foundations of machine learning.

From a theoretical viewpoint, probably approximately correct learning provides a mathematical and statistical framework for describing machine learning.

Most traditional machine learning and deep learning algorithms can be described as empirical risk minimisation under this framework.

Interest related to pattern recognition continued into the 1970s, as described by Duda and Hart in 1973.

Data mining is a related field of study, focusing on exploratory data analysis (EDA) through unsupervised learning.

This process is known as doping, and the resulting semiconductors are known as doped or extrinsic semiconductors.

When a semiconductor is doped by Group V elements, they will behave like donors creating free electrons, known as "n-type" doping.

When a semiconductor is doped by Group III elements, they will behave like acceptors creating free holes, known as "p-type" doping.

Some examples of semiconductors are silicon, germanium, gallium arsenide, and elements near the so-called "metalloid staircase" on the periodic table.

When two regions with different doping levels are present in the same crystal, they form a semiconductor junction.

Apart from doping, the conductivity of a semiconductor can be improved by increasing its temperature.

Consumer devices such as smartphones can be accurate to 4.9 m (16 ft) or better when used with assistive services like Wi-Fi positioning.

military had also developed methods to perform local GPS jamming, meaning that the ability to globally degrade the system was no longer necessary.

The prototype spacecraft was launched in 1978 and the full constellation of 24 satellites became operational in 1993.

It provides critical positioning capabilities to military, civil, and commercial users around the world.

The first decentralized blockchain was conceptualized by a person (or group of people) known as Satoshi Nakamoto in 2008.

Further work on a cryptographically secured chain of blocks was described in 1991 by Stuart Haber and W.

Under their company Surety, their document certificate hashes have been published in The New York Times every week since 1995.

The bitcoin design has inspired other applications and blockchains that are readable by the public and are widely used by cryptocurrencies.

The blockchain may be considered a type of payment rail.

Private blockchains have been proposed for business use.

"arithmetic"), the Latin word was altered to algorithmus.

By 1596, this form of the word was used in English, as algorithm, by Thomas Hood.

In general, a program is an algorithm only if it stops eventually.

The Web was invented by English computer scientist Tim Berners-Lee while at CERN in 1989 and opened to the public in 1993.

Servers and resources on the World Wide Web are identified and located through a character string called a uniform resource locator (URL).

The World Wide Web has become the world's dominant information systems platform.

It is the primary tool that billions of people worldwide use to interact with the Internet.

== History == The Web was invented by English computer scientist Tim Berners-Lee while working at CERN.

Instead, he adopted concepts he had put into practice with his private ENQUIRE system (1980), which was built at CERN.

The word Internet was used in 1945 by the United States War Department in a radio operator's manual, and in 1974 as the shorthand form of Internetwork.

The Internet has enabled and accelerated new forms of personal interaction through instant messaging, Internet forums, and social networking services.

Business-to-business and financial services on the Internet affect supply chains across entire industries.

The Internet has no single centralized governance in either technological implementation or policies for access and usage.

The technical underpinning and standardization of the core protocols is an activity of the non-profit Internet Engineering Task Force (IETF).

== Terminology == The word internetted was used as early as 1849, meaning interconnected or interwoven.