Abstract: A high-precision data search function is provided by calculating feature values of time series data in a unit that is different from the unit of compression, while conserving data storage capacity. A data management apparatus 100 comprises a data reception unit 111 which acquires data in a first unit from time series data that was input, a data compression unit 114 which compresses the data acquired in the first unit, and a feature value calculation unit 113 which calculates a feature value indicating a feature of data acquired in a second unit that differs from the first unit.

Abstract: A bisoxadiazolidine dione derivative represented by the following general formula (I) or a pharmaceutically acceptable salt thereof, which is useful as an insulin sensitivity-increasing drug, and a pharmaceutical composition thereof. ##STR1## each represents a phenylene groupL:(1) an oxygen,(2) a ##STR2## (3) a --S(O).sub.n --, (4) a --CO--,(5) a ##STR3## (6) an alkylene group or an alkenylene group which may respectively be interrupted with an oxygen atom and/or a sulfur atom.