Big data and deep learning are two major trends that will impact and influence the future of data science. We have entered the era of Big Data. The exponential growth and wide availability of digital data offer great potentials and also bring new challenges in various disciplines. Harnessing the power of Big Data is not an ordinary task. On the other hand, deep learning is a fast-growing field and one of the most promising methods for data analytics. It has been successfully applied to a wide range of application domains such as speech recognition, computer vision, natural language processing, and analytics for large-scale business data. To take advantage of the unprecedented scale of big data, developments in deep learning that can scale up are urgently needed.