Search type | How it's done | Examples |
---|---|---|
Full-text keyword search | Just type in the keywords you want to use. To look for alternate forms of keywords, use the * (asterisk) operator. All keywords separated by spaces will be required to appear in the results. They will be matched against all content fields in the database if no specific content fields are provided (see below). To search for a specific phrase, enclose it in double quotes. | gaussian process regression Kepler exoplanet* (matches exoplanet, exoplanets, exoplanetary) "M dwarf" flar* |
Boolean operators | Use NOT keyword to make sure keyword doesn't show up in the results. Use keyword1 OR keyword2 to match either keyword1 or keyword2. Use keyword1 AND keyword2 to make sure both or all keywords show up in the results. You can use parentheses to specify the operator precedence. | Kepler NOT transit* (K2 OR Gaia) AND supernova* |