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Some classes that use Hadoop to scan weather data from NOAA MADIS. The record reader assumes a sequence file whose entries are gzipped netcdf METAR data. This also includes just enough of matrix library to support BFGS. That is, a pure Java implementation of the default algorithm behind fminunc is a tidbit here. In this context it was a fast enough way to fix a polynomial surface by least squares.
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Hadoop and Hive I/O for netcdf METAR extracts, a small matrix library, BGFS and naive gradient descent optimizers
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