Learning

Whiletheseapproaches arewidely used inpractice andachieveimpressiveempirical gains, their theoretical understanding largely lags behind. Towards bridging this gap, we present a unifying perspectivewhere several such approaches can beviewed asimposing a regularization on the representation via alearnable function using unlabeled data. Wepropose adiscriminativetheoretical framework for analyzing the sample complexity of these approaches, which generalizes the framework of [3] to allow learnable regularization functions.