LDA is vastly slower than LSA because LSA can use large scale SVD algorithms.
LDA may be better for some applications, but even the fastest implementations tend to be much slower than large scale SVD. The LDA implementations in Mahout are not particularly fast. On Wed, Dec 26, 2012 at 5:01 PM, Vince Wei (jianwei) <[email protected]>wrote: > LDA(Latent Dirichlet Allocation) is implemented in Mahout, and LDA is > better than LSA. > I cannot see the necessary to implement LSA in Mahout. > > > Sincerely > Vince Wei > > -----Original Message----- > From: [email protected] [mailto:[email protected]] On Behalf Of Osman > Ba?kaya > Sent: 2012年12月27日 2:58 > To: [email protected] > Subject: LSA in Mahout > > Greetings everyone, > > I want to use Latent Semantic Analysis in Mahout. Is there any > implementation for this algorithm. I checked but I couldn't find. LSA is > very similar to SVD, so I thought the reason why there is no concrete LSA > implementation. Could you clarify this for me, please? > > Thank you so much. > > Cordially, > Osman baskaya >
