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Full Discussion: Help with identify gradient and the coefficient of determination of a straight line
Top Forums Shell Programming and Scripting Help with identify gradient and the coefficient of determination of a straight line Post 302895945 by blakeoft on Thursday 3rd of April 2014 11:39:51 AM
Old 04-03-2014
Sorry if this looks awful. It seems to work though.
Code:
>awk '{sumy=$2+$3+$4+$5} {sumxy=$3*3+$4*6+$5*10} {sumy2=$2*$2+$3*$3+$4*$4+$5*$5}
{denomy=(4.0*sumy2-sumy*sumy)} {slope=(4.0*sumxy-19*sumy)/(4.0*145-361)}
{if(denomy!=0) print $0,slope,(4.0*sumxy-19*sumy)*(4.0*sumxy-19*sumy)/((4.0*145-361)*denomy) ;
else print $0,slope,"#N/A"}' file.txt

Output:
Code:
t1 2 3 5 8 0.611872 0.976082
t2 0 2 0 2 0.127854 0.223744
t3 1 1 1 1 0 #N/A
t4 50 70 80 90 3.88128 0.942596

You might want to consider looking into R (I prefer to use R Studio as an interface). It's pretty easy to use and does stuff like this. Just something to think about if you have more work along the same lines.
Last edited by blakeoft; 04-03-2014 at 12:41 PM.. Reason: added the output that I got
This User Gave Thanks to blakeoft For This Post:
perl_beginner
 

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LEARN ABOUT MOJAVE

mpsnnconcatenationgradientnode

MPSNNConcatenationGradientNode(3)			 MetalPerformanceShaders.framework			 MPSNNConcatenationGradientNode(3)

NAME

       MPSNNConcatenationGradientNode

SYNOPSIS

       #import <MPSNNGraphNodes.h>

       Inherits MPSNNGradientFilterNode.

   Instance Methods
       (nonnull instancetype) - initWithSourceGradient:sourceImage:gradientState:

   Class Methods
       (nonnull instancetype) + nodeWithSourceGradient:sourceImage:gradientState:

   Additional Inherited Members
Detailed Description
       A MPSNNSlice filter that operates as the conjugate computation for concatentation operators during training  As concatenation is formally
       just a copy and not a computation, there isn't a lot of arithmetic for the slice operator to do, but we still need to extract out the
       relevant portion of the gradient of the input signal that went into the corresponding concatenation destination image.

Method Documentation
   - (nonnull instancetype) initWithSourceGradient: (MPSNNImageNode *__nonnull) gradientSourceNode(MPSNNImageNode *__nonnull)
       sourceImage(MPSNNGradientStateNode *__nonnull) gradientState
       Init a MPSNNConcatenationGradientNode  Generally you should use [MPSNNConcatenationNode gradientFiltersWithSources:] instead.

       Parameters:
	   gradientSourceNode The gradient image functioning as input for the operator
	   sourceImage The particular input image to the concatentation, if any, that the slice corresponds with
	   gradientState The gradient state produced by the concatenation filter, consumed by this filter

   + (nonnull instancetype) nodeWithSourceGradient: (MPSNNImageNode *__nonnull) gradientSourceNode(MPSNNImageNode *__nonnull)
       sourceImage(MPSNNGradientStateNode *__nonnull) gradientState
       create a MPSNNConcatenationGradientNode	Generally you should use [MPSNNConcatenationNode gradientFiltersWithSources:] instead.

       Parameters:
	   gradientSourceNode The gradient image functioning as input for the operator
	   sourceImage The particular input image to the concatentation, if any, that the slice corresponds with
	   gradientState The gradient state produced by the concatenation filter, consumed by this filter

Author
       Generated automatically by Doxygen for MetalPerformanceShaders.framework from the source code.

Version MetalPerformanceShaders-100				  Thu Feb 8 2018				 MPSNNConcatenationGradientNode(3)
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