ANOMALY FACTOR ESTIMATION METHOD, ANOMALY FACTOR ESTIMATING DEVICE, AND PROGRAM

ANOMALY FACTOR ESTIMATION METHOD, ANOMALY FACTOR ESTIMATING DEVICE, AND PROGRAM

An anomaly factor estimation method includes the steps of: calculating, based on a factor table indicating an occurrence frequency of each of factors for each of events, a prior probability that is a probability for each factor to occur; calculating a posterior probability that is a probability for...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: SHIDA, Masato, SONODA, Takashi, KUMANO, Shintaro
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:An anomaly factor estimation method includes the steps of: calculating, based on a factor table indicating an occurrence frequency of each of factors for each of events, a prior probability that is a probability for each factor to occur; calculating a posterior probability that is a probability for a certain event to be caused by a certain factor; and multiplying the posterior probability by a weighting coefficient relating to a signal-to-noise ratio gain value of a sensor measurement value, and calculating an index indicating an occurrence probability for each combination of the factors and the events.