Electronic device and controlling method of electronic device for applying a logical constraint to a neural network model

Abstract

A controlling method of an electronic device are provided. The controlling method includes obtaining, a first feature value corresponding to the input data, mapping information included in the first feature value to a symbolic value corresponding to each of a logically certain information and uncertain information, tweaking a gradient corresponding to the uncertain information, obtaining a second feature value in which the first feature value and the symbolic value are merged, obtaining temporary answer information including the certain information and the uncertain information, obtaining score information related to a level the temporary answer information matches a pre-defined logic rule, training the neural network model based on the tweaked gradient when the score information is less than a pre-set threshold value, and obtaining an output data on the input data based on the obtained second feature value when the score information is greater than or equal to the pre-set threshold value.