Google Special Search Features by xld14276


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									                                                                Web Search Engine FAQs                                                                              1
Feature                                  Google                                     AllTheWeb                                          Alta Vista
URL           (Basic Search), (Basic Search),      (Basic Interface),
                       (Advanced Search),                         (Advanced Search)                                  (Advanced Interface),
              (Google Toolbar)                                          
                                                                                                                     (Search Assistant)
Size (as of 12/11/01) 1.5 billion                                    625 million                                     550 million

Update Frequency       Monthly overall but daily for a few million Entire site every 9-11 Days                       Approximately every 45-60 days but more
                       time-sensitive pages                                                                          frequently for News.
Depth of Crawling      All pages are crawled and indexed up to Entire content on a web page is crawled and           All pages are crawled up to 100k of content.
and Indexing           110k of content. After that, any remaining indexed.                                           After that, any remaining content is not
                       content is not searchable. All pages in                                                       searchable. Up to 4MB of links are crawled
                       cache are also limited to 110k.                                                               and indexed.

Default Search         AND                                           AND                                             OR (in Basic Interface), Phrase (in Advanced
Phrase Searching       Yes, put terms inside "quotation marks"       Yes, put terms inside "quotation marks"         Yes, put terms inside "quotation marks"

Stemming or            No.                                           No.                                             Yes, use * (asterisk) in middle or at end of
Truncation                                                                                                           term. Can also use * to represent an entire
                                                                                                                     word inside a phrase.
Stop Words or          Yes by placing a + (plus) sign in front of    No Stop Words (all words searched).             Stop Words cannot be searched in Basic
Common Terms           term. Example: to search the phrase                                                           Interface but all words are searchable,
                       Vitamin A, enter "Vitamin +A"                                                                 including Stop Words, in Advanced Interface.

Case Sensitive         No.                                           No.                                             Yes.
Boolean Logic          Yes Use - (minus) sign to exclude a term.     Yes. Use + (plus) sign, - (minus) sign or       Yes. Boolean (+, -, AND, OR, AND NOT) in
                       Use OR to search either term. AND is          Boolean (AND, OR, NOT)                          Basic Interface. Boolean (and, or, and not) in
                       default so don't need to use it between                                                       Advanced Interface.
                       terms. The + (plus) sign is used only to
                       search Stop Words.
Proximity              No.                                           No.                                             Yes, NEAR (Basic Interface), near
                                                                                                                     (Advanced Interface) (10 words in either
                                                                                                                     direction of term).
Nesting Search         No.                                           Yes.                                            Yes.
Terms (in

   Sources: (1) G Price. Web Search Engine FAQs Searcher 9 (9): 38-51, 2001. (2) D. Sullivan, Search Engine Sizes. Search Engine Report, (3)
                                                                Web Search Engine FAQs                                                                             2
Search by Field         Yes. Use Advanced search form to            Yes. Use Advanced Search form to specify          Yes. Fields include: (1) anchor: (2) applet:
                        specify: language, file format, date, where language, where terms occur, domain, date,        (3) domain: (4) host: (5) image: (6) like: (7)
                        terms occur, domain, filter for adult       and filter for adult content.                     link: (8) text: (9) title: (10): url: For more
                        content, find similar pages, and links to a                                                   details, see
                                                                                                                      Also limit search by language and date (in
                                                                                                                      Advanced Interface only)
Directory             Yes, Open Directory Project                   No.                                               Yes, LookSmart.
Other Databases or Image Search, Google Groups, and                 News, Pictures, Videos, MP3 Files, and FTP News, Comparison shop, Yellow Pages,
Directories Available Google Web Directory. From Advanced           files plus Scirus (Elsevier scientific            People Finder, Maps, Education Search,
at Web Site           Search page search: U.S. government           information) and Soccer Search.                   Government Search, Text Only Search,
                      and military sites, university sites (such as                                                   Images, Video, and MP3/Audio. See:
                      Stanford), mail order catalogs, Linux, BSD                                            
                      Unix, and Apple Macintosh.
Special Features      Google is the only search engine to crawl Customize search, language, filter,                   Ticker symbols provide direct links to stock
                      and make the content of 12 main file          intelligence, results, search tips, and flash in quote, news, SEC filings. Translate web
                      types, including PDF, PostScript, and         results. Note that News, Pictures, Videos, documents.
                      Microsoft Office, searchable. Translation MP3 Files, and FTP files are all searched
                      of web documents. Telephone Search            simultaneously. At bottom of results page,
                      (U.S. Home and Business Numbers),             click on tab to view. Folders grouped by
                      Address Search (for Maps). Results            category as well as suggested terms to
                      include cached versions of web pages,         narrow a search result are also available
                      Dictionary Definitions (for underlined        near the top of the results page.
                      terms), and Similar pages.
Sorting               Results are sorted by relevance which is By default, sites are sorted in order of               In Basic Interface, results are ranked by Alta
                      determined by Google's PageRank               perceived relevance. Only one page per            Vista's relevance ranking formula. Results
                      analysis, determined by links from other      domain is displayed unless the Customize are also clustered by site and only one record
                      pages with a greater weight given to          option for site collapsing (in results) is turned per site appears on the main results page. In
                      authoritative sites. Pages are also           off. Sites clustered under the one page per the Advanced Interface, results are NOT
                      clustered by site. Only two pages per site domain are not marked, and most users will sorted unless one or more terms is in the
                      will be displayed.                            not realize more hits from that domain might "sort by" box. In Basic Interface, only 200
                                                                    be available.                                     records can be displayed. In Advanced
                                                                                                                      Interface, up to 1000 records can be

   Sources: (1) G Price. Web Search Engine FAQs Searcher 9 (9): 38-51, 2001. (2) D. Sullivan, Search Engine Sizes. Search Engine Report, (3)

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