Flow rate prediction device, flow rate prediction method, and flow rate prediction program
First Claim
1. A flow rate prediction device, the device comprising:
- a determining unit configured to determine, based on time-series data of a measured flow rate, whether a state of the flow rate is stationary or non-stationary;
an identifying unit configured toidentify a first stochastic process model defining the flow rate as a first stochastic variable if the state of the flow rate is stationary and a second stochastic process model defining the flow rate as a second stochastic variable if the state of the flow rate is non-stationary; and
calculates a first parameter for use in the identified first stochastic process model based on the time-series data and a second parameter for use in the identified second stochastic process model based on the time-series data; and
a calculating unit configured tocalculate a probability distribution function or a probability density function defining a first pedicted flow rate as the first stochastic variable based on the first stochastic process model identified by the identifying unit and the first parameter calculated by the identifying unit, andcalculate a probability distribution function or a probability density function defining a second predicted flow rate as the second stochastic variable based on the second stochastic process model identified by the identifying unit and the second parameter calculated by the identifying unit;
wherein the determining unit, the identifying unit, and the calculating unit are each implemented by at least one hardware processor.
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Accused Products
Abstract
A flow rate prediction device to predict a flow rate determines, based on time-series data of a measured flow rate, whether the state of the flow rate is stationary or non-stationary. The flow rate prediction device identifies a stochastic process model defining the flow rate as a stochastic variable based on the result of determination of whether the state is stationary or non-stationary and calculates a parameter for use in the identified stochastic process model based on the time-series data. The flow rate prediction device calculates a probability distribution function or a probability density function defining the flow rate to be predicted as the stochastic variable based on the identified stochastic process model and the parameter.
6 Citations
11 Claims
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1. A flow rate prediction device, the device comprising:
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a determining unit configured to determine, based on time-series data of a measured flow rate, whether a state of the flow rate is stationary or non-stationary; an identifying unit configured to identify a first stochastic process model defining the flow rate as a first stochastic variable if the state of the flow rate is stationary and a second stochastic process model defining the flow rate as a second stochastic variable if the state of the flow rate is non-stationary; and calculates a first parameter for use in the identified first stochastic process model based on the time-series data and a second parameter for use in the identified second stochastic process model based on the time-series data; and a calculating unit configured to calculate a probability distribution function or a probability density function defining a first pedicted flow rate as the first stochastic variable based on the first stochastic process model identified by the identifying unit and the first parameter calculated by the identifying unit, and calculate a probability distribution function or a probability density function defining a second predicted flow rate as the second stochastic variable based on the second stochastic process model identified by the identifying unit and the second parameter calculated by the identifying unit; wherein the determining unit, the identifying unit, and the calculating unit are each implemented by at least one hardware processor. - View Dependent Claims (2, 3, 4, 5, 6, 9)
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7. A flow rate prediction method implemented by one or more processors, the method comprising:
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determining, based on time-series data of a measured flow rate, whether a state of the flow rate is stationary or non-stationary; identifying a first stochastic process model defining the flow rate as a first stochastic variable if the state of the flow rate is stationary and a second stochastic process model defining the flow rate as a second stochastic variable if the state of the flow rate is non-stationary; calculating a first parameter for use in the identified first stochastic process model based on the time-series data and a second parameter for use in the identified second stochastic process model based on the time-series data; and calculating a probability distribution function or a probability density function defining a first predicted flow rate as the first stochastic variable based on the identified first stochastic process model and the first calculated parameter, and calculating a probability distribution function or a probability density function defining a second predicted flow rate as the second stochastic variable based on the identified second stochastic process model and the second calculated parameter. - View Dependent Claims (10)
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8. A non-transitory computer readable medium embodying instructions for controlling a device to implement a flow rate prediction method, the flow rate prediction method comprising:
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determining, based on time-series data of a measured flow rate, whether a state of the flow rate is stationary or non-stationary; identifying a first stochastic process model defining the flow rate as a first stochastic variable if the state of the flow rate is stationary and a second stochastic process model defining the flow rate as a second stochastic variable if the state of the flow rate is non-stationary; calculating a first parameter for use in the identified first stochastic process model based on the time-series data and a second parameter for use in the identified second stochastic process model based on the time-series data; and calculating a probability distribution function or a probability density function defining a first predicted flow rate as the first stochastic variable based on the identified first stochastic process model and the first calculated parameter, and calculating a probability distribution function or a probability density function defining a second predicted flow rate as the second stochastic variable based on the identified second stochastic process model and the second calculated parameter. - View Dependent Claims (11)
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Specification