Research on Railway Safety Common Data Model and DDS Topic for Real-time Railway Safety Data Transmission
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Given a minimum support s, then sets of items that appear in at least s baskets are called frequent itemsets.
Learn the definition and properties of SVD, one of the most important tools in data mining!. Learn how to interpret the results of SVD, and how to use it
Drineas et al., Fast Monte Carlo Algorithms for Matrices III: Com puting a Compressed Approximate Matrix Decomposition, SIAM Journal on Computing,
Communication cost = input file size + 2 × (sum of the sizes of all files passed from Map processes to Reduce processes) + the sum of the output sizes of the Reduce
Because output is spread across R files (each reduce task creates one file in DFS).. Task
Step 2: label each node by the # of shortest paths from the root E..
Data stream consists of a universe of elements chosen from a set of size N. Maintain a count of the number of distinct elements
I.e., if competitive ratio is 0.4, we are assured that the greedy algorithm gives an answer which is >= 40% good compared to optimal alg, for ANY input... Analyzing