a new term / correction to
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A set of agreed-upon principles according to which
information can more logically be stored in an information
retrieval system. The term is used in science to describe the classification
of natural elements.
A fairly new search engine (compared
to oldies like AltaVista).
A measure of how often a term is found in a collection
of documents. TF is combined with inverse
document frequency (IDF) as a means of determining which documents
are most relevant to a query.
TF is sometimes also used to measure how often a word appears in a specific
According to Chris Sherman's "New Web Map
Reveals Previously Unseen Bow Tie Organizational Structure",
termination pages can be accessed via links from the core (heavily inter-linked
part of the Web) but do not link back into the core.
For example, most businesses want their sites to be end destinations
and do not link to outside pages.
Also see origination page.
In the classic vector-space retrieval model (Salton),
documents and queries are converted to term
vectors to allow documents to be matched
to queries and ranked based on the number
of times the search terms occur in
A type of search
engine that attempts to automatically classify sites based on the
keywords they contain.
Similar to a dictionary, but containing lists
of synonyms rather than definitions. Some search
engines use a thesaurus in addition to things like stemming
and fuzzy matching in an effort
to improve recall.
A domain where the
name itself has little value to the owner. Throwaway domains are typically
used to experiment with. It's common among search
engine spammers to rigister throwaway domains to experiment with
things like cloaking. Unethical SEO
providers sometimes use throwaway domains to build link
popularity to a client's site. This can backfire though as search
engines are continually finding better ways to combat spam.
It's worth noting that Google specifically
warns against the use of throwaway domains. See their information
for webmasters for details.
The title of a page is displayed in the title
bar right at the top of the browser window.
Almost all search engines consider
the title when determining a document's relevance
to a query and most search engines consider
the title the most important element. In the page, the title is specified
as an HTML element and placed in the header
section of the page. For a details on what spiders
are looking for when indexing pages and
the varying importance of different elements, please refer to the Search
Top Level Domain. See domain.
With reference to search
engines, toolbars are browser add-ons
provided by the search engines. These toolbars often include a search
box, shortcuts to the different sections of the search engine, additional
page information etc.
Some search engines
call your default page (usually something like index.html, index.htm,
default.asp etc.) your top-level page. When they say "submit only
your top-level page", it means that they probably have a spider
that will find the rest of your pages from there. It's always a good
idea to have a link from your top-level page
to your sitemap.
Often used as a synonym for "visitors".
The term is used to describe activity on a web site - be it hits,
page views or unique
This sudden and dramatic loss of traffic
occurs when a web site is re-designed and the page names all change.
The result is that aside from the main URL, none of the old pages exist
anymore, and anyone clicking on a search
engine listing gets a 404, or "page not found" error unless
other measures are taken.
- May 30, 2003
by Christian Nielsen of
The name of the Lycos
A meta search engine that searches
both the surface-web (normal documents) and the invisible
web or, as they call it, the DeepNet (documents not indexed
by normal search engines).
engine that perform searches via voice recognition, clicks of a
mouse or any means other than typing a keyword.
Example site: http://perfext.com
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