This, the
24th issue of Transactions on Large-Scale Data- and Knowledge-Centered Systems,
contains extended and revised versions of seven papers presented at the 25th
International Conference on Database and Expert Systems Applications, DEXA
2014, held in Munich, Germany, in September 2014. Following the conference, and
two further rounds of reviewing and selection, six extended papers and one
invited keynote paper were chosen for inclusion in this special issue. Topics
covered include systems modeling, similarity search, bioinformatics, data
pricing, k-nearest neighbor querying, database replication, and data
anonymization.