Prefix search allows you to find documents based on the
beginning of a word. This operator allows for instance,
to find a proper noun from its shortened version, or to
search on the linguistic root of a word.
Searches for documents containing words starting with
Jenn: Jennifer, Jennie, Jenni, Jenna, etc.
developing, developed, development, develops, etc.
The OPT operator allows you to specify a
term without making its presence mandatory for a document
to appear in the search results. Use it to specify
several terms so as to make the search more precise,
without narrowing it.
cow OPT mad
Search for documents containing "cow" with preferably
OR allows you to specify several disjunctive
terms. This means that the search engine will retrieve
any document that contains either one term or the other.
For example, use it to specify a list of similar terms
that may occur in the type of document you are looking
(movie star) OR (famous people)
Searches for documents containing either movie
star or famous people.
Exalead supports regular expression patterns. Patterns
are introduced by a slash ('/') character. Within a
regular expression, '.' is a special character that can
represent any character, '*' stands for character
repetition, '|' stands for 'or', and parenthesis are used
to group characters. '?' is placed the end of a character
group to make it optional.
Searches for documents with words that match the
pattern S . R EN .. PI . Y -- this can be very useful
to finish your crossword puzzles!
Searches for documents containing any of the following:
mpg, mpg1, mpg2, or mpg3.