Sentence examples for mean prefix sum from inspiring English sources
In the algorithm, the arrays PSUM and SSUM mean prefix sum and suffix sum, respectively.
15 Note that the cumulative sum is sometimes referred to as a prefix sum: there is no difference between a prefix sum and a cumulative sum.
Various algorithms including matrix multiplication, DFT computation, sorting, prefix sum have been successfully mapped on this architecture.
The basis of our solution involves several variations of prefix sum in parallel [7].
In this approach, the fitness values are grouped into SIMD lanes and the prefix sum is computed in vector-parallel mode.
We adopt parallel prefix sum algorithm which could dramatically reduce the computational complexity of calculating the cumulative sum [ 40].
The computational complexity of the parallel prefix sum algorithm is O log2 N), which is much more efficient than the serial version above whose computational complexity is O(N).
The basic idea is to build a balanced binary tree based on the input data; then the prefix sum can be computed by sweeping the tree to and from its root.
It also experimented with binary scan and reduction primitives in large binary prefix sums, stream compaction, and radix sort, with average speed-ups of 3%, 2%, and 4%, respectively.
Furthermore, we show that the optimal algorithms for prefix summing for these two types of operators are not equivalent.
Moreover, we present optimal or near-optimal algorithms for prefix summing for both non-commutative and commutative binary operators.
