Apparatus and method for augmenting training data using notch filter
AssigneesElectronics and Telecommunications Research Institute, Kyungpook National University Industry-Academic Cooperation Foundation
InventorsYoung Ho JEONG, Soo Young PARK, Sang Won SUH, Woo-taek LIM, Minhan KIM, Seokjin LEE
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Abstract
Disclosed is an apparatus and method for augmenting training data using a notch filter. The method may include obtaining original data, and obtaining training data having a modified frequency component from the original data by filtering the original data using a filter configured to remove a component of a predetermined frequency band.
Claims15
A method of augmenting training data, the method comprising:
- obtaining original data;
- and
- obtaining training data having a transformed frequency component from the original data by filtering the original data using a filter configured to remove a component of a predetermined frequency band.
A method of augmenting training data, the method comprising:
- obtaining original data;
- and
- obtaining training data having a transformed time component from the original data by deleting a predetermined range of data on a time axis of the original data.
A method of training a classifier, the method comprising:
- generating a random number;
- augmenting training data by transforming input data and generating an estimate for a ground truth by inputting the augmented training data into a classifier, if the random number exceeds a threshold;
- generating an estimate for the ground truth by inputting the input data into the classifier, if the random number is less than or equal to the threshold;
- calculating a loss function by comparing the estimate for the ground truth to a real ground truth included in the input data;
- and
- updating a parameter of the classifier using the loss function.
Dependencies are inferred from the claim text.