What is the Difference between SVD (singular value decomposition) and Extract Topics from Data (LDA)

LevenD

Hi;

I'm new with Text Mining and Rapidminer. I  want to learn difference between these two operators. 
and also, is LSA (Latent Semantic Analysis) different technique or same as SVD.

[Deleted User]

Hello

@LevenD

Look at these links please I think you can find a lot of information for these operators

https://docs.rapidminer.com/latest/studio/operators/modeling/predictive/discriminant_analysis/linear_discriminant_analysis.html


https://docs.rapidminer.com/latest/studio/operators/cleansing/dimensionality_reduction/singular_value_decomposition.html

I hope this helps
mbs

MartinLiebig

Hi @LevenD,
those to operators are totally different algorithms. You can use SVD in the LSA to do the same thing (topic detection) but algorithmically they don't have anything in common.
Best,
Martin

LevenD

thank you for replies.

mschmitz "You can use SVD in the LSA to do the same" actually this is exactly what i'm looking for. Do i have a chance to do in Rapidminer with operators ?