An Efficient Dual-Hierarchy t-SNE Minimization

t-distributed Stochastic Neighbour Embedding (t-SNE) has become a standard for exploratory data analysis, as it is capable of revealing clusters even in complex data while requiring minimal user input. While its run-time complexity limited it to small datasets in the past, recent efforts improved upon the expensive similarity computations and...

GPGPU Linear Complexity t-SNE Optimization

In recent years the t-distributed Stochastic Neighbor Embedding (t-SNE) algorithm has become one of the most used and insightful techniques for exploratory data analysis of high-dimensional data. It reveals clusters of high-dimensional data points at different scales while only requiring minimal tuning of its parameters. However, the...

Untestable faults identification in GPGPUs for safety-critical applications

Nowadays, General Purpose Graphics Processing Units (GPGPUs) devices are considered as promising solutions for high-performance safety-critical applications, such as those in the automotive field. However, their adoption requires solutions to effectively detect faults arising in the device during the operative life. Hence, effective in-field...

GPU-based stochastic-gradient optimization for non-rigid medical image registration in time-critical applications

Currently, non-rigid image registration algorithms are too computationally intensive to use in time-critical applications. Existing implementations that focus on speed typically address this by either parallelization on GPU-hardware, or by introducing methodically novel techniques into CPU-oriented algorithms. Stochastic gradient descent (SGD...

Custom Architecture for Immersive-Audio Applications

In this dissertation, we propose a new approach for rapid development of multi-core immersive-audio systems. We study two popular immersive-audio techniques, namely the Beamforming and the Wave Field Synthesis (WFS). Beamforming utilizes microphone arrays to extract acoustic sources recorded in a noisy environment. WFS employs large loudspeaker...

GPU implementation of deflated preconditioned conjugate gradient