Query optimizer is at the heart of the database systems. Cost-based optimizer studied in this
paper is adopted in almost all current database systems. A cost-based optimizer introduces …

Microaggregation is a disclosure control method used to protect microdata. We introduce a
local search method and employ it in an iterated local search algorithm for the NP-hard …

We are in the era of Big Data. Enormous amount of data are being collected everyday in
business transactions, mobile sensors, social interactions, bioinformatics, astronomy, etc …