Browsing Αποσπάσματα απο μονογραφίες by Author "Μάστορα, Άννα"
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Query expansion of zero-hit subject searches: using a thesaurus in conjunction with NLP techniques
Καπιδάκης, Σαράντος; Μάστορα, Άννα; Πεπονάκης, Μανώλης; Kapidakis, Sarantos; Mastora, Anna; Peponakis, Manolis (2012)The focus of our study is zero-hit queries in keyword subject searches and the effort of increasing recall in these cases by reformulating and, then, expanding the initial queries using an external source of knowledge, ...