It is our great honour to welcome you to the 2015 Big Data Analytics Forum(BDA2015), hosted jointly by Computer Network Information Center,Chinese Academy of Sciences and NVIDIA Corporation. This year’s forum brings many high-ranking guests from research funding and performing organizations from around the world.This year, the Forum will focus on the following topics:deep learning and GPU computing, big data analytics and supercomputing,smart hardware,data collection and mobile GPU . We invited many outstanding scientists in the big data field to present their recent findings. Young faculties, postdocs, and graduate students working in the related fields are encouraged to participate in this exciting conference. All attendee are welcome to submit abstracts and present your recent results . BDA2015 will be a great conference for sharing the state-of-the-art research and scientific exchange on bid data and GPU computing, as well as to experience the unique environment of Beijing, a city which is an ancient capital with a history of more than 3000 years. Beijing has various tourist attractions and is an ideal place for a relaxed and professionally rewarding exchange of technical ideas and deliberations. The forum contributed greatly to the development of the big data and GPU computing.We are confident that the forum will benefit from the same dedicated effort and spirit of cooperation established at the regional level.On behalf of CNIC and NVIDIA, we are pleased that you have accepted the invitation to join us in Software Park Chinese Academy of Science,Beijing, We are look forward to the engaging discussions, exchanges of ideas.Again, we extend our warmest welcome to all, and hope that you enjoy the meeting.