Abstract: A combined data creating unit, a map creating unit, and a first state analyzer. The combined data creating unit is configured to obtain a device datum. The device datum includes an issued information issued from any device and an issued time of the issued information. The combined data creating unit is configured to create a combined datum by combining the device data related to a state determination target. The map creating unit is configured to map the combined data based on a similarity of the combined data to create a map. The first state analyzer is configured to analyze a determination target state using positions of the combined data disposed in the map.

Abstract: A method of extracting subsets from the whole population of data configured by values of many elements in a case where the subsets have a correlation for a plurality of elements and finding out correlated elements. More specifically, the method comprises modeling data as a vector based on values of all the elements configuring individual data, and, in a multidimensional space in which all the data included in the population is plotted, extracting subsets each having a multidimensional correlation based on the densities of plots, and finding out featured elements having a correlation in the subsets.