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REF: has_constant, k_constant, include implicit constant detection in base #1794

josef-pkt opened this issue Jun 26, 2014 · 2 comments


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commented Jun 26, 2014

see comments at the end of #1792

RegressionModel does no implicit constant detection.
The data handling code in base only detects explicit constant (and has a bug for multiple zero variance columns

TODO: merge the use of RegressionModel._has_constant, into

Note: we will end up with possible repeated matrix_rank calculations that users can avoid by explicitly providing hasconst in the model creation (__init__).


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commented Jun 28, 2014

I have the PR almost finished and will push tonight.

@josef-pkt josef-pkt referenced this issue Jun 28, 2014


BUG/ENH: fix and improve constant detection #1797

1 of 4 tasks complete

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commented Jul 28, 2014

changed in #1797

@josef-pkt josef-pkt closed this Jul 28, 2014

@josef-pkt josef-pkt added this to the 0.6 milestone Jul 28, 2014

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