Learning Word-Like Units from Joint Audio-Visual Analylsis

David Harwath, James R. Glass

Abstract: Given a collection of images and spoken audio captions, we present a method for discovering word-like acoustic units in the continuous speech signal and grounding them to semantically relevant image regions. For example, our model is able to detect spoken instances of the words ``lighthouse'' within an utterance and associate them with image regions containing lighthouses. We do not use any form of conventional automatic speech recognition, nor do we use any text transcriptions or conventional linguistic annotations. Our model effectively implements a form of spoken language acquisition, in which the computer learns not only to recognize word categories by sound, but also to enrich the words it learns with semantics by grounding them in images.

Conflicts: mit.edu

Keywords: Speech, Computer vision, Deep learning, Multi-modal learning, Unsupervised Learning, Semi-Supervised Learning