THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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The files for this exercise can be found in the hello world folder of the source code repository. Please note that __init__.py is not included in this folder as an empty file will be sufficient for the purposes of this exercise.
1. Overview
The overall logic is split into three parts. All the UDF and UDA are defined in simple_logistic.sql_in. The transition, merge and final functions are implemented in C++. Those functions together constitute the UDA called __logregr_simple_step which takes one step from the current state to decrease the logistic regression objective. And finally in simple_logistic.py_in the plpy package is used to implement in python a UDF called logregr_simple_train which invokes __logregr_simple_step iteratively until convergence.
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