The documents are returned sorted on
relevance depending on order, proximity, frequency of terms.
Default search behavior
By default, all search terms are optional. It
behaves like an OR logic. Objects that contain the more terms are
rated higher in the results and will appear first in their type. For
example, wiki forum will find:
- objects that include both terms
- objects that include the term wiki
- objects that include the term forum
Requiring terms
Add a plus sign ( + ) before a term to indicate that the term must
appear in results. Example: +wiki forum will
find objects containing at least wiki. Objects with
both terms and many occurences of the terms will appear first.
Excluding terms
Add a minus sign ( - ) before a term to indicate that the term must
not appear in the results. To reduce a term's value without
completely excluding it, use a tilde. Example: -wiki
forum will find objects that do not contain wiki
but contain forum
Grouping terms
Use parenthesis ( ) to group terms into
subexpressions. Example: +wiki +(forum blog)
will find objects that contain wiki and forum
or that contain wiki and blog in
any order.
Finding phrases
Use double quotes ( " " ) around a phrase to find terms in the exact
order, exactly as typed. Example: "Alex Bell"
will not find Bell Alex or Alex G. Bell.
Using wildcards
Add an asterisk ( * ) after a term to find objects that include the
root word. For example, run* will find:
- objects that include the term run
- objects that include the term runner
- objects that include the term running
Reducing a term's value
Add a tilde
( ~ ) before a term to reduce its value indicate to the ranking of the
results. Objects that contain the term will appear lower than
other objects (unlike the minus
sign which will completely exclude a term). Example: +wiki
~forum will rate an object with only wiki
higher that an object with wiki and forum.
Changing relevance value
Add
a less than ( < ) or greater than ( > ) sign before a term to
change the term's contribution to the overall relevance value assigned
to a object. Example: +wiki +(>forum < blog)
will find objects that contain wiki and forum
or wiki and blog in any order. wiki
forum will be rated higher.