There are 2 repositories under libsvm-format topic.
Package provides the direct java conversion of the origin libsvm C codes as well as a number of adapter to make it easier to program with libsvm on Java
A lightweight and user friendly CUDA-based C++ library for deep and convolutional neural network which allows for the implementation of any computation network and multi-task learning as in the CNTK toolkit
Python script used to transform data to LibSVM format