Re: Row Similarity

2015-05-15 Thread Pat Ferrel
similarity problem where I have stars instead of users, wavelengths instead of items, and intensities instead of ratings/clicks. But I'm having difficulty using mahout's row similarity package (I'm new to this, and these days astronomers code pretty exclusively in python). I know that I must have to 1

Re: Row Similarity

2015-05-14 Thread Ted Dunning
similarity problem where I have stars instead of users, wavelengths instead of items, and intensities instead of ratings/clicks. But I'm having difficulty using mahout's row similarity package (I'm new to this, and these days astronomers code pretty exclusively in python). I know that I must

Re: Row Similarity

2015-05-14 Thread Jonathan Seale
. But I'm having difficulty using mahout's row similarity package (I'm new to this, and these days astronomers code pretty exclusively in python). I know that I must have to 1) create a sparse matrix where each row is a star, columns are wavelengths, and the values

Re: Row Similarity

2015-05-14 Thread Suneel Marthi
instead of users, wavelengths instead of items, and intensities instead of ratings/clicks. But I'm having difficulty using mahout's row similarity package (I'm new to this, and these days astronomers code pretty exclusively in python). I know that I must have

Re: Row Similarity

2015-05-13 Thread Suneel Marthi
the cosine similarity between ALL pairs of stars. Seems to me this is simply a user-user similarity problem where I have stars instead of users, wavelengths instead of items, and intensities instead of ratings/clicks. But I'm having difficulty using mahout's row similarity package

Re: Row Similarity

2015-05-13 Thread Jonathan Seale
have stars instead of users, wavelengths instead of items, and intensities instead of ratings/clicks. But I'm having difficulty using mahout's row similarity package (I'm new to this, and these days astronomers code pretty exclusively in python). I know that I must have to 1) create

Row Similarity

2015-05-13 Thread Jonathan Seale
of stars. Seems to me this is simply a user-user similarity problem where I have stars instead of users, wavelengths instead of items, and intensities instead of ratings/clicks. But I'm having difficulty using mahout's row similarity package (I'm new to this, and these days astronomers code pretty

Re: Row Similarity

2015-05-13 Thread Charlie Hack
stars instead of users, wavelengths instead of items, and intensities instead of ratings/clicks. But I'm having difficulty using mahout's row similarity package (I'm new to this, and these days astronomers code pretty exclusively in python). I know that I must have to 1) create a sparse matrix

Row Similarity

2014-08-18 Thread Pat Ferrel
The spark version of itemsimilarity only has LLR as a metric. But what about RSJ? it’s a pretty simple thing to convert itemsimilarity to rowsimilarity but RSJ has some uses beyond collaborative filtering. Are some of the other similarity metrics needed? Specifically text comparison typically