Patent ID: 11874854
Assignee: KABUSHIKI KAISHA TOSHIBA
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 18:
19. A non-transitory computer readable medium having a computer program stored therein which causes a computer executing the computer program to perform processes, comprising:
acquiring time-series data of at least one sensor on an observation target for a first period of time from a start time to an end time, the first period including a plurality of first time sections;
sequentially advancing a time from the start time to the end time at a time interval to acquire a target time at each time interval;
extracting partial data of the target time in the time-series data;
identifying a first time section that includes the target time among the plurality of first time sections;
accessing a memory which stores a plurality of classification models corresponding to the plurality of first time sections, each of the plurality of classification models being a machine learning model for classifying a state of the observation target at a certain time in the first time section corresponding to a respective one of the plurality of classification models from partial data at the certain time in the time-series data;
specifying a classification model corresponding to the identified first time section from the plurality of classification models in the memory;
estimating the state of the observation target at the target time, based on the partial data at the target time in time-series data and the specified classification model; and
generating output data including estimated states of the observation target at each target time,
wherein
each of the classification models associates an input variable with an output variable representing one state of a plurality of states able to be had by the observation target,
the output variable indicates a class of a plurality of classes representing the states able to be had by the observation target, and
the class is a first class where the state on the first time is right, or a second class where the state on the first time is wrong.