Complexity / 2018 / Article / Alg 3

Research Article

Dynamic Prediction Research of Silicon Content in Hot Metal Driven by Big Data in Blast Furnace Smelting Process under Hadoop Cloud Platform

Algorithm 3

Parallel design of sample covariance matrix for training set.
//Map
Input: The sample on the current node;
Output: , , .
Main procedure:
1. Scan the current node sample, accumulate the number of samples of the current node ;
2. Calculate ;
3. Calculate ;
//Reduce
Input: Each node , , . ;
Output: .
Main procedure:
1. Summarize the output of the Map node;
2. Find the covariance matrix of the whole sample according to Eq. (26).

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