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Gonzalo San Gil, PhD.

Invisible Web: What it is, Why it exists, How to find it, and Its inherent ambiguity - 1 views

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    [What is the "Invisible Web", a.k.a. the "Deep Web"? The "visible web" is what you can find using general web search engines. It's also what you see in almost all subject directories. The "invisible web" is what you cannot find using these types of tools. The first version of this web page was written in 2000, when this topic was new and baffling to many web searchers. Since then, search engines' crawlers and indexing programs have overcome many of the technical barriers that made it impossible for them to find "invisible" web pages. These types of pages used to be invisible but can now be found in most search engine results: Pages in non-HTML formats (pdf, Word, Excel, PowerPoint), now converted into HTML. Script-based pages, whose URLs contain a ? or other script coding. Pages generated dynamically by other types of database software (e.g., Active Server Pages, Cold Fusion). These can be indexed if there is a stable URL somewhere that search engine crawlers can find. ]
Gonzalo San Gil, PhD.

CompletePlanet - Discover over 70,000+ databases and specially search engines - 2 views

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    Node Level All Topics >> Agriculture Games & Hobbies Military Religion Arts & Design Government Music Science Business Health News Search Engines Computing & Internet Home & Garden Newspapers Shopping Education Humanities People Social Sciences Energy Jobs & Careers Places Sports Engineering Law Politics Transportation Environment Literature Products & Technology Travel Family Living things Recreation Weather Finance & Economics Magazines & Journals References Food & Drink Media & Entertainment Regional
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