The search terms can be simple - with only one word -
or composed - with two or more words.
Words with accent marks or the "ç" (used in Portuguese)
The search for words with accent marks can be done by
including or excluding the accent marks. This is also true for words with "ç":
exportacao = exportação
(exportation in Portuguese is written with a ç)
Words Out of Index - Stop Words
Commonly used words in Portuguese and in English
are ignored by the search tool:
Portuguese Stop Words:
"a", "as", "ao", "aos", "até", "de", "da", "das", "do",
"dos", "e", "em", "mas", "na", "nas", "nem", "no", "nos", "o", "os", "ou", "para", "pelo", "pelos", "pois", "por", "que", "se", "um", "uma",
English Stop Words:
"and", "are", "at", "be", "but", "by",
"for", "if", "in", "into", "is", "it", "not", "of", "on", "or", "such", "the", "to", "was"
Use the asterisk (*) symbol to the right side of a word to
replace any remaining number of characters.
hypot* = hypothalamus, hypotension,
IT SHOULD BE STRESSED THAT WITHOUT THE USE OF THE (*) SYMBOL,
THE SIMPLE PLURAL FORM, FOR EXAMPLE, WILL NOT BE INCLUDED IN THE SEARCH.
"cat" will not be linked with results
Necessary words in a result
To ensure the presence of a word in the result,
use the symbol (+) in front of the word. In the example below, the word "educate" is optional, but the word "cat" is obligatory.
Words banned in a result
To guarantee that a word will not appear in
the results, use the minus (-) symbol or the exclamation mark (!) or the word NOT in front of the word you do not want
to appear. In the example below, the word "educate" is optional, and the word "cat" should not appear.
educate -cat = educate
!cats = educate NOT cats
Three boolean operators can be used to specify the
terms of a search: AND, OR and NOT. The boolean operators must be typed in uppercase letters.
AND - Retrieves documents that contain
all the search terms. AND can also be replaced by the symbol &&. This is the standard operator in Lume searches; therefore,
if nothing is written between the search terms, it will be as if AND had been used.
In the example below all documents that contain
the terms "irrigation" and "rice" are retrieved.
rice = irrigation && rice = irrigation rice
OR - Retrieves documents that contain
at least one of the search terms. OR can also be replaced by the symbol ||.
In the example below all documents that
contain either "education" or "university" or both terms are retrieved.
university = education || university
NOT - Eliminates a specific term,
see Words banned in a result section.
Combinations of Boolean operators
You can combine Boolean operators
by using parenthesis.
In the search below, the following items
are consulted: items that contain the term "reptiles" and do not contain the term "iguana", as well as items that contain the term
"marsupials" and the term "Australia".
(reptiles NOT iguana)
OR (marsupials AND Australia) =
(reptiles ! iguana) || (marsupials && Australia) =
(reptiles -iguana) OR (marsupials Australia)
The search results are sorted by the relevance of the term
consulted on the retrieved item(s). That is, it corresponds to the proportion of the number of occurrences of the term and the size of the
document or field (metadata). The first items to appear on the list are those that contain the largest number of occurrences of the