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chris-santiago / decomposition

Simple ISOMAP and PCA decomposition algorithms
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ISOMAP invers mapping #1

Open marcrocasalonso opened 3 years ago

marcrocasalonso commented 3 years ago

Dear Chris,

I have a question about the inverse transform of isomap. Do you have implemented any technique to return from the reduced space of ISOMAP to the input space?

Thank you in advance, Regards Marc

chris-santiago commented 3 years ago

Hi Marc,

Unfortunately, no. Because we're not just performing a matrix transformation (like PCA) there isn't a quick & easy way to invert transformed data to the original space. See original paper, here.

marcrocasalonso commented 3 years ago

Thank you Chris! I appreaciate your time!