September 6, 2003

There is in fact a search engine world beyond Google, AltaVista and the other well known brands. Gigablast is one of them.

Gigablast is run by Matt Wells, an American mathematician. Wells originally worked with the search team at the now defunct Infoseek search engine before starting coding Gigablast. A test version was ready in March last year, and the search engine has managed to spider some 200 million web pages.

Wells has now added true Boolean searching to Gigablast's advanced search functions, something which is bound to please librarians and other professional researchers.

By searching for cats AND dogs for instance, you will get pages that include both words, not only one of them. Boolean is a simple set of search terms that lets you combine keywords in a way the search engines can understand. The readers of Pandia can easily learn how to "speak Boolean" by reading the Goalgetter search tutorial.

Gigablast asks you use to use AND NOT to exclude a word (cats AND NOT dogs). Alternatively you may - of course - use the minus sign instead (cats -dogs). Please note that Gigablast defaults to OR, meaning that the search dogs cats will bring you pages that includes one or both of the words.

You do not have to learn Boolean to make use of Gigablast's advanced features, however. You may also make use of the site's advanced search form, which lets you combine keywords by using different form fields. You may restrict searches to sites, URLs, titles, IP numbers, and links, as well as to PDF, doc, xls, ppt, ps and text files.

Source: Pandia

        

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