Bulgaria

2021, Bulgaria, Engineering / 19.07.2021

We study the creation of physical adversarial examples, which are robust to real-world transformations, using a limited number of queries to the target black-box neural networks. We observe that robust models tend to be especially susceptible to foreground manipulations, which motivates our novel Foreground attack. We demonstrate that gradient priors are a useful signal for black-box attacks and therefore introduce...

2021, Bulgaria, Computing / 19.07.2021

Abstract reasoning and logic inference are difficult problems for neural networks, yet essential to their applicability in highly structured domains. In this work we demonstrate that a well known technique such as spectral regularization can significantly boost the capabilities of a neural learner. We introduce the Neural Abstract Reasoner (NAR), a memory augmented architecture capable of learning and using abstract...

2021, Biology, Bulgaria / 19.07.2021

The most accurate method for studying DNA replication is the labeling of newly synthesized DNA molecules with halogenated nucleosides followed by immunofluorescence and microscopy detection, known as DNA fiber labeling. The major difficulty of the method is the labor-intensive analysis, which requires measuring the lengths of a large number of labelled fragments. There are very few attempts to automate this...

2020, Bulgaria, Engineering / 15.07.2021

This project in the field of robotics demonstrates the application of a neural network that uses the sinusoidal activation function for the task of perturbed walking. The usage of such networks is analysed. Furthermore, the most common local minima and the methods of resolving them are presented. The small number of neurons allows the network to be deployed on a...