To search with multiple keywords, separate each word with a space
such as "fruit size". This will search for images with either of the
keywords. If you want to search for images with all of the keywords,
use the AND operator, such as "fruit AND size".
2.
Searching with a phrase
If you surround several words with double quotes such as "mutagenesis
lines", a search for that particular phrase will be performed.
Without the double quotes, a search for either of the words will be
performed.
3.
Including or excluding words from your search
You can use operators to include or exclude specific words from your
search.
A union using sets - OR operator or || symbol
This will search for images with either of the keywords. For
example, "fruit OR size" or "fruit || size" will search for images
related to either brown or leaf.
An intersection using sets – AND operator or && symbol
This will search for images which contain both of the keywords.
For example, if you type "fruit AND size" or "fruit && size", a
search for images which contain both keywords "fruit" and "size"
will be performed.
A difference using sets – NOT operator or ! symbol
The NOT operator excludes images that contain the keyword after
the NOT operator. For example, if you type "plant NOT habit" or
"plant !habit", a search for images which contain brown but does
not contain leaf will be performed.
Plus (+) symbol
The "+" symbol performs a search for images that must contain the
keyword which comes after the "+" symbol. For example, use "fruit
+seed" to search for images that may contain "fruit" but must
contain "seed".
Minus (-) symbol
The "-" symbol excludes images that contain the keyword which
comes after the "-" symbol. For example, use "-EMS –mutagenesis" to
search for images without "brown" and without "leaf".
4.
Wildcard searches
You can use the following characters for wildcard searches.
Question mark (?) for single character wildcard search
The single character wildcard search will look for images with
keywords which match that with the single character replaced. For
example, use "sho?t" to search for "short" or "shoot".
Asterisk (*) for multiple characters wildcard search
The multiple character wildcard search will look for images with
keywords that match that with 0 or more characters replaced. For
example, use "muta*" to search for "mutant" or "mutagenesis".
5.
Fuzzy searches
You can use the tilde (~) symbol at the end of a single keyword to
perform a fuzzy search which will look for other words with spelling
similar to the keyword. For example, use "flower~" to search for
images related to flower or flowers.
You can also specify a value after the tilde (~) symbol to indicate
the required similarity such as "flower~0.2". The value is between
0 and 1, excluding 1. The closer the value is to 1, the higher the
similarity and if a value is not specified, the default would be
0.5.
6.
Proximity Searches
You can add the tilde (~) symbol and a number at the end of a phrase
to specify the distance of the keywords with one another. For
example, use "width size"~10 to search for information
with "width" and "size" within 10 words of each other.
7.
Grouping
Keywords grouped together with parentheses () will be prioritized in
the search. For example, use "(gamma OR mutant) AND seed" to search
for leaves that are white or brown.
8.
Searching with keywords that contain special characters
You can escape the supported special characters (+ - && || ! ( ) { }
[] ^ " ~ * ? : \) with a backslash (\) to search for
keywords which contains special characters. For example, use
"\[298\]" to search for [298].
