The BD whose volume increases rapidly over time, could be generated in real-time/near real-time, batches, streams or bits. The variety refers to the nature of the data. This could be structured, semi-structured or unstructured. Structured data are those that are well-organized and can be ...
[48] have proposed a new way to look at cognitive access in underwater acoustic communication, and consider it a new research field. We will also improve our approach for this theme in the near future.Acknowledgments This work is sponsored by the National Natural Science Foundation of China ...