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Search-engine
A search engine is a software system designed to carry out web searches. They search the World Wide Web in a systematic way for particular information specified in a textual web search query. The search results are generally presented in a line of results, often referred to as search engine results pages (SERPs). When a user enters a query into a search engine, the engine scans its index of web pages to find those that are relevant to the user's query. The results are then ranked by relevancy and displayed to the user. The information may be a mix of links to web pages, images, videos, infographics, articles, research papers, and other types of files. Some search engines also mine data available in databases or open directories. Unlike web directories and social bookmarking sites, which are maintained by human editors, search engines also maintain real-time information by running an algorithm on a web crawler. Any internet-based content that can't be indexed and searched b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WebCrawler
WebCrawler is a search engine, and one of the oldest surviving search engines on the web today. For many years, it operated as a metasearch engine. WebCrawler was the first web search engine to provide full text search. History Brian Pinkerton first started working on WebCrawler, which was originally a desktop application, on January 27, 1994 at the University of Washington. On March 15, 1994, he generated a list of the top 25 websites. WebCrawler launched on April 21, 1994, with more than 4,000 different websites in its database and on November 14, 1994, WebCrawler served its 1 millionth search query for "nuclear weapons design and research". On December 1, 1994, WebCrawler acquired two sponsors, DealerNet and Starwave, which provided money to keep WebCrawler operating. Starting on October 3, 1995, WebCrawler was fully supported by advertising, but separated the adverts from search results. On June 1, 1995, America Online (AOL) acquired WebCrawler. After being acquired by A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deep Web
The deep web, invisible web, or hidden web are parts of the World Wide Web whose contents are not indexed by standard web search-engine programs. This is in contrast to the " surface web", which is accessible to anyone using the Internet. Computer-scientist Michael K. Bergman is credited with inventing the term in 2001 as a search-indexing term. Deep web sites can be accessed by a direct URL or IP address, but may require entering a password or other security information to access actual content. Such sites have uses such as web mail, online banking, cloud storage, restricted-access social-media pages and profiles, some web forums and code language that require registration for viewing content. It also includes paywalled services such as video on demand and some online magazines and newspapers. Terminology The first conflation of the terms "deep web" with "dark web" happened during 2009 when deep web search terminology was discussed together with illegal activities occurr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lycos
Lycos, Inc., is a web search engine and web portal established in 1994, spun out of Carnegie Mellon University. Lycos also encompasses a network of email, web hosting, social networking, and entertainment websites. The company is based in Waltham, Massachusetts, and is a subsidiary of Kakao. Etymology The word "Lycos" is short for "Lycosidae", which is Latin for "wolf spider". History Lycos is a university spin-off that began in May 1994 as a research project by Michael Loren Mauldin of Carnegie Mellon University in Pittsburgh. Lycos Inc. was formed with approximately US$2 million in venture capital funding from CMGI. Bob Davis became the CEO and first employee of the new company in 1995, and concentrated on building the company into an advertising-supported web portal, led by Bill Townsend, who served as Vice President, Advertising. Lycos enjoyed several years of growth during the 1990s and became the most visited online destination in the world in 1999, with a global pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Web Crawler
A Web crawler, sometimes called a spider or spiderbot and often shortened to crawler, is an Internet bot that systematically browses the World Wide Web and that is typically operated by search engines for the purpose of Web indexing (''web spidering''). Web search engines and some other websites use Web crawling or spidering software to update their web content or indices of other sites' web content. Web crawlers copy pages for processing by a search engine, which indexes the downloaded pages so that users can search more efficiently. Crawlers consume resources on visited systems and often visit sites unprompted. Issues of schedule, load, and "politeness" come into play when large collections of pages are accessed. Mechanisms exist for public sites not wishing to be crawled to make this known to the crawling agent. For example, including a robots.txt file can request bots to index only parts of a website, or nothing at all. The number of Internet pages is extremely large; ev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yahoo! Search
Yahoo! Search is a Yahoo! internet search provider that uses Microsoft's Microsoft Bing, Bing search engine to power results, since 2009, apart from four years with Google Search, Google until 2019. Originally, "Yahoo! Search" referred to a Yahoo!-provided interface that sent Web search query, queries to a searchable index of pages supplemented with its directory of websites. The results were presented to the user under the Yahoo! brand. Originally, none of the actual Web crawler, web crawling and Data warehouse, data housing was done by Yahoo! itself. In 2001, the searchable index was powered by Inktomi (company), Inktomi and later by Google until 2004, when Yahoo! Search became independent. On July 29, 2009, Microsoft and Yahoo! announced a deal in which Bing would henceforth power Yahoo! Search. As of July 2018, Microsoft Sites handled 24.2 percent of all search queries in the United States. During the same period of time, Verizon Media, Oath (the then-owner of the Yahoo bran ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
