how to install R package-ridge

ridge: Ridge Regression with Automatic Selection of the Penalty Parameter Linear and logistic ridge regression functions. Additionally includes special functions for genome-wide single-nucleotide polymorphism (SNP) data. When

I got the following message, Error: package or namespace load failed for ‘ridge’ in dyn.load(file, DLLpath = DLLpath, …): unable to load …

Pay attention to union function of pyspark

In SQL the UNION clause combines the results of two SQL queries into a single table of all matching rows. The two queries must result in the same number of columns and compatible data types in order to unite. Any duplicate records are automatically removed unless UNION ALL is used. UNION can be useful in data warehouse applications where tables aren’t perfectly normalized.[2] A simple example would be …

How two read SAS data with PySpark

For some reason, I have to convert sas data to hdfs then analyse with  pyspark. after some research I found spark-sas7bdat is …