Neural Data Augmentation Techniques for Time Series Data and its Benefits

Exploring adversarial attacks and studying their effects on machine learning algorithms has been of interest to researchers. Deep neural networks working with time series data have received lesser interest compared to their image counterparts in this context. In a recent finding, it has been revealed that current state-of-the-art deep learning time series classifiers are vulnerable to adversarial attacks. In this paper, we introduce neural data augmentation techniques and show that classifier trained with such augmented data obtains state-of-the-art classification accuracy as well as adversarial accuracy against Fast Gradient Sign Method (FGSM) and Basic Iterative Method (BIM) on various time series benchmarks. © 2020 IEEE

MPI Parallelization of NEUROiD Models Using Docker Swarm

NEURON along with other systems simulators is increasingly being used to simulate neural systems where the complexity demands massive parallel implementations. NEURON's ParallelContext allows parallelizing models using MPI. However, when using NEURON models in a docker container, this parallelization does not work out-of-the-box. We propose an architecture for MPI parallelization of NEURON models using docker swarm. We integrate this on our NEUROiD platform and obtain almost 16x improvement in simulation time on our cluster

Curated Model Development Using NEUROiD: A Web-Based NEUROmotor Integration and Design Platform

Decades of research on neuromotor circuits and systems has provided valuable information on neuronal control of movement. Computational models of several elements of the neuromotor system have been developed at various scales, from sub-cellular to system. While several small models abound, their structured integration is the key to building larger and more biologically realistic models which can predict the behavior of the system in different scenarios. This effort calls for integration of elements across neuroscience and musculoskeletal biomechanics. There is also a need for development of methods and tools for structured integration that yield larger in silico models demonstrating a set of desired system responses. We take a small step in this direction with the NEUROmotor integration and Design (NEUROiD) platform. NEUROiD helps integrate results from motor systems anatomy, physiology, and biomechanics into an integrated neuromotor system model. Simulation and visualization of the model across multiple scales is supported. Standard electrophysiological operations such as slicing, current injection, recording of membrane potential, and local field potential are part of NEUROiD. The platform allows traceability of model parameters to primary literature. We illustrate the power and utility of NEUROiD by building a simple ankle model and its controlling neural circuitry by curating a set of published components. NEUROiD allows researchers to utilize remote high-performance computers for simulation, while controlling the model using a web browser

Tool for image annotation based on gaze

Supervised learning on image data demands availability of large amounts of annotated image data. Annotation is predominantly a tool assisted manual activity and increasingly accounts for a large share of budget in machine learning systems development. This is due to the time involved and the need for large manpower to annotate large databases. Instead of the predominantly bounding box drawing using mouse cursor, we propose a more natural human computer interface-the human gaze. We hereby propose a technique of image annotation by using a novel protocol for acquiring gaze data to create a polygon around the object rather than bounding boxes. In this study the method is outlined and the results are compared with manually created annotations. The technique can be used to annotate existing image databases or create new annotated databases by simultaneous image acquisition and annotation