Improved product quality abnormal data FP-Growth correlation analysis method
A correlation analysis and product quality technology, applied in data processing applications, electronic digital data processing, digital data information retrieval, etc., can solve the problem of lack of in-depth data analysis and data mining for data and quality inspection data, and insufficient production data Use and other issues
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[0046] The present invention will be described in further detail below in conjunction with the implementation examples.
[0047] 1. Improvement of the FP-Tree data structure in the FP-Growth algorithm: When executing the FP-Tree construction algorithm, the optimized item header table is used to avoid cumbersome loop traversal operations, and the specific execution is performed according to the code in Appendix 2.
[0048] 2. Improvement of FP-Growth algorithm parallelization strategy:
[0049] In the second step, first, through flatMap conversion, each transaction in the transaction set is converted into the form of , where key represents the transaction, and the value of value is set to 1. On this basis, use the reduceByKey operation to make the key value the same The values of all elements are summed to obtain a data set stored in the format of , named Trans; again use flatMap to split the key of Trans into Shard the data, and then use the reduceByKey conversion to sum t...
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