I saw this exception from Colt OpenLongObjectHashMap: It's not reproduceable. This is indexOfKey: So the only divisors used are length and (len ...

I'm doing Colt Steele's The Web Developer Bootcamp and I've got to the point where we're going to start a database for the YelpCamp app. Problem is, h ...

I have a Java simulation in which I need to use Uniform, Exponential, Poisson, and Gamma distributions - and I need to initialize the random stream an ...

I'm new to dealing with SparseVector. I want to subtract two SparseVectors and return result as SparseVector too. What is the difference between Vect ...

The math library colt (version 1.2) depends on the library EDU.oswego.cs.dl.util.concurrent (gee.cs.oswego.edu/dl/classes/EDU/oswego/cs/dl/util/concur ...

I'm using java colt library for sparse matrix. Inputs are the two sparse matrix with the same row number, e.g., SparseDoubleMatrix1D v1; //[1 2] Spa ...

I would like to multiply a vector (1 x n) with a matrix (m x n) in java and the library parallel colt. I guess I have chosen it because it has paralle ...

Brand new to Apache Spark and I'm a little confused how to make updates to a value that sits outside of a .mapTriplets iteration in GraphX. See below: ...

I'm writing Java and using colt as my matrix library and would like to find a (any) vector in the kernel of a matrix. I can do this in python using sy ...

I am using parallel colt wherein I need to find the rank of a matrix. The API documentation says the following about the following about DoubleAlgebra ...

I want to benchmark the best 2 or 3 libraries to compute a truncated singular value decomposition (SVD), i.e. an SVD where only the k largest singular ...

I want to perform simple matrix operations in my code and I use the Colt library (see in here: http://acs.lbl.gov/software/colt/api/index.html) I wa ...

I want to solve the linear equation matrix*X=D using Colt library. I tried : but I get an error "The method solve(DoubleMatrix2D, DoubleMatrix2D) i ...

How can I transpose an array using functions from libraries? I have downloaded and used the library Colt from here: http://acs.lbl.gov/software/colt/a ...

I want to perform matrix operation (for example find the transpose matrix of a given matrix A) I found some libraries to do so, for example Colt: ht ...

I want to perform Singular Value Decomposition on a large (sparse) matrix. In order to choose the best(most accurate) library, I tried replicating the ...

I am writing a java program which involves working with a 1058 X 1058 matrix containing float values. This matrix contains many zero values and so I n ...

In Parallel Colt, how do I add a vector to every row of a matrix, preferably in-place? In particular, I have a DoubleMatrix1D I'd like to add to each ...

under this link, we can see several versions of old colt libraries. I'm wondering what library mahout statistical users use today? I need it for a big ...

I was using Jama for matrix operation in java but since they don't have sparse matrix then I start to use Parallel Cold Library (PColt) . It is a mult ...