In scenarios in which a small data set is being joined with a larger data set, Spark offers an optimization technique called broadcasting. If one of the data sets is small enough to fit into the memory of each worker node, it can be sent to all nodes, reducing the need for costly shuf...
It is a tomographic technique based on the phenomenon of nuclear magnetic resonance. It produces high-quality images having excellent spatial resolution in the order of millimeters and is more suited for imaging soft tissues (e.g., distinguishing white and grey matter in the human brain) due to...