Deep Web. From Wikipedia, the free encyclopedia (Redirected from Deep Web)
Database search engine. There are several categories of search engine software: Web search or full-text search (example: Lucene), database or structured data search (example: Dieselpoint), and mixed or enterprise search (example: Google Search Appliance).
The largest web search engines such as Google and Yahoo! Utilize tens or hundreds of thousands of computers to process billions of web pages and return results for thousands of searches per second. High volume of queries and text processing requires the software to run in highly distributed environment with high degree of redundancy. Modern search engines have the following main components: Searching for text-based content in databases or other structured data formats (XML, CSV, etc.) presents some special challenges and opportunities which a number of specialized search engines resolve. Database search engines were initially (and still usually are) included with major database software products.
See also External links List of online databases. List of academic databases and search engines. The general list of search engines for all-purpose search engines that can be used for academic purposesbibliographic databases for information about databases giving bibliographic information about finding books and journal articles.
Note that "free" or "subscription" can refer both to the availability of the database or of the journal articles included. This has been indicated as precisely as possible in the lists below. See also References Jump up ^ "List of EBSCO databases". 99 Resources to Research & Mine the Invisible Web. College researchers often need more than Google and Wikipedia to get the job done.
To find what you're looking for, it may be necessary to tap into the invisible web, the sites that don't get indexed by broad search engines. The following resources were designed to help you do just that, offering specialized search engines, directories, and more places to find the complex and obscure. Search Engines Whether you're looking for specific science research or business data, these search engines will point you in the right direction. Turbo10: On Turbo10, you'll be able to search more than 800 deep web search engines at a time. Databases Tap into these databases to access government information, business data, demographics, and beyond. GPOAccess: If you're looking for US government information, tap into this tool that searches multiple databases at a time. "The Invisible Web" by Chris Sherman. The Invisible Web. What is the Invisible Web?
How can you find it online? What makes the Invisible Web search engines and Invisible Web databases so special? Find out the answers to these questions and learn more about this section of the Web that's so much larger than what you can uncover with an ordinary Web search. IncyWincy: The Invisible Web Search Engine. Search Socially. For scientific information. DeepDyve - Research. Rent. Read.
Hakia. Welcome to INFOMINE: Scholarly Internet Resource Collections. Discover over 70,000+ databases and specially search engines. 100 Useful Tips and Tools to Research the Deep Web. By Alisa Miller Experts say that typical search engines like Yahoo!
And Google only pick up about 1% of the information available on the Internet. The rest of that information is considered to be hidden in the deep web, also referred to as the invisible web. So how can you find all the rest of this information? This list offers 100 tips and tools to help you get the most out of your Internet searches. Meta-Search Engines Meta-search engines use the resources of many different search engines to gather the most results possible.
SurfWax. Semantic Search Tools and Databases Semantic search tools depend on replicating the way the human brain thinks and categorizes information to ensure more relevant searches. Hakia. IncyWincy: The Invisible Web Search Engine. Encyclopedia, Almanac, Atlas, Biographies, Dictionary, Thesaurus. Free online reference, research & homework help. TechXtra: Engineering, Mathematics, and Computing. Business Solutions & Software for Legal, Education and Government. The Guide DB. Find your guide to any topic. ERIC – World’s largest digital library of education literature. E-Print Network 3.0 - Advanced Search. For scientific information. Search the Original Directory Worldwide.