Making Queries
Query Basics
Advanced Query Tips
Do Another Search
Making Queries
Excite for Web Servers gives
web users access to a sophisticated concept-based searching engine. But
even though the search engine is advanced, users can form queries without
using a complicated query language. This page will help you to choose
the queries that will give you the best results.
Query Basics
A query is simply a description
of an information need. Unlike Boolean systems that search for just those
documents containing all the words in your query, Excite for Web
Servers will search for documents that are a best match for the words
in your query. Excite for Web Servers will also search for documents that
are about the same concepts that your query describes, so sometimes Excite
for Web Servers will bring back articles that don't mention any
of the words in your original query.
What this means is that
your query -- the description of your information need -- can be as
detailed as you like. Don't worry about providing too many words; the
more words, the better. Additional words in your query will help Excite
for Web Servers figure out what concepts you're really interested in.
On the other hand, Excite for Web Servers will do a pretty good job
of figuring out what documents are interesting to you even if your query
is vague.
For example, let's say you're
searching this web site for documents about contract. A good starting
point would be
contract law
If you have a question about
a particular feature of contract law, for example contract law and bankruptcy,
you might choose a query like
contract law bankruptcy
Even if there are no documents
that are actually about bankruptcy (in our example - there are!), the
Excite for Web Servers engine will still show you documents about contract
law.
Advanced Query Tips
Here are some suggestions for
getting the best results out of Excite for Web Servers.
Use More Words
The easiest way to narrow your Excite for Web Servers search and the
first thing you should try is to simply use more words in your query.
The greater the detail you provide, the better Excite for Web Servers
is able to find precisely what you're looking for. Also try using the
Query By Example option on the search results page.
Use + to Require Words
Put a plus sign (+) in front of a search word
and Excite for Web Servers will make sure that ALL of the documents
it returns contain the word. Example search: arrest +cocaine.
Use - to Exclude Words
Put a minus sign (-) in front of a search word
and Excite for Web Servers will make sure that NONE of the documents
it returns contain the word. Example search: arrest -cocaine.
Use AND, OR, NOT, AND
NOT, ( )
Excite for Web Servers supports full Boolean operators and syntax. You c an use the AND, OR, NOT, and AND NOT operators, and
parentheses ( ) for grouping . Example search: arrest AND search.
Using
a Plus Sign (+) to Require Words
What it does:
Excite for Web Servers will make sure that ALL of the documents it finds
include the word(s) you specify as being required.
How to use it:
In your search text, put a plus sign (+) in front of words that must
be in documents that Excite for Web Servers finds. Do not put a space
between the plus sign (+) and the word. For example, to find documents
about hockey, but only those with the term NHL in them you could enter:
estate +tx
What's different about
it:
Without the plus sign (+), Excite for Web Servers looks for documents
about any of the words in your search text. Excite for Web Servers will
rank documents that have all of the words higher, but will also list
documents that have only some of your search words as well as documents
that may have none of your search words, but that appear to be conceptually
related.
The downside:
You may miss related documents that don't have the words you specify
as required. For example, the search estate +IRS; would not
include documents that have the words Internal Revenue Service, but
not IRS.
Using
a Minus Sign (-) to Exclude Words
What it does:
Excite for Web Servers will make sure that NONE of the documents it
finds contain any word(s) you specify to exclude.
How to do it:
In your search text, put a minus sign (-) in front of words that must
not be in documents that Excite for Web Servers finds. Do not put any
space between the minus sign (-) and the word. For example, if you want
to find documents about estate law but not about taxes, you could enter:
estate -taxBR>
What's different about
it:
Without the minus sign (-), Excite for Web Servers looks for documents
that are conceptually-related to all the search words you provide, rather
than looking for items to exclude from the results.
The downside:
It's easy to exclude too much. For example, if you were looking for
information on greyhound dogs and not the bus company, the search "greyhound
-bus" would exclude a document that was all about greyhounds, but
that had the sentence "the greyhound trainers arrived by bus."
Boolean
Operators: AND, OR, NOT and ()
What they do/How to use
them:
AND - Documents found must contain all words joined by the AND
operator. Note that this is equivalent to putting a plus sign (+) in
front of the word. For example, to find documents that have all of the
words wizard, oz and movie, you could enter: wizard AND oz AND movie
OR - Documents found
must contain at least one of the words joined by OR. For example, to
find documents that have either the words cat or kitten you could enter:
cat OR kitten
AND NOT - Documents
found cannot contain the word after the term AND NOT. Note that this
is equivalent to putting a minus sign (-) in front of the word. For
example, to find documents that have the word pets, but not the word
dogs, you could enter: pets AND NOT dogs
( ) - Parentheses
are used to group portions of Boolean queries together. For example,
to find documents that have the word fruit, and either the word banana
or the word apple in them, you could enter: fruit AND (banana OR apple)
What's different about
it:
Allows for excluding and requiring words, and complex combinations of
words.
The downside:
It's often difficult to specify exactly what you want to include or
exclude. You can also get unexpected results if you are not careful
about your use of operators and parentheses. For example, the search
bananas OR apples AND oranges is the same as the search bananas OR (apples
AND oranges). Both queries will find documents that contain both apples
and oranges, together with documents that contain the word bananas.
However, the query (bananas OR apples) AND oranges is not the same.
It will find documents containing the word oranges and, in the same
document, either bananas or apples. Be careful out there!
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