Research Assistant at The Research Center for Logic, Optimization and Security, Department of Computer Science, Faculty of Mathematics and Computer Science, University of Bucharest.

Currently working on unsupervised anomaly detection methods, in particular for network applications (see Projects).

Writing a PhD on dictionary learning under the supervision of profesor Bogdan Dumitrescu, Faculty of Automatic Control and Computers, University Politehnica of Bucharest (see Publications).

Teaching mostly numerical linear algebra and signal processing (see Teaching).

Contact me at andra [dot] baltoiu [at] unibuc [dot] ro.

PROJECTS [↑]

Graphomaly - Software package for anomaly detection in graphs modeling financial transactions

The project involves creating (unsupervised) anomaly detection methods and implementing a Python toolbox for detecting fraudulent finacial activities ocurring in graphs of transactions.

MASSA - Advanced security mechanisms for autonomous systems

My work consists in adapting dictionary learning methods for the problem of urban traffic prediction and optimization.

ATLAS - Innovation hub for advanced cyber-security technologies

My group's contribution to the project is the first application of unsupervised, online dictionary learning to detecting malware.

Previously worked as research scientist at the National Institute for Sport Research and Institute of Space Science, both in Bucharest, Romania.

PUBLICATIONS [↑]

Book Chapters

P. Irofti, A. Pătrașcu and A. Băltoiu, "Fraud Detection in Networks", in Hassanien et al (eds.): Enabling AI Applications in Data Science, Springer, 2020

Andra Băltoiu, Catalin Buiu, "Representing emotions as dynamic interactions of symbols. A case study on literary texts", in Jordi Vallverdu (ed.): Synthesizing Human Emotion in Intelligent Systems and Robotics, UAB, 2014

Journals

A. Băltoiu and B. Dumitrescu, "Sparse Bayesian Learning Algorithm for Separable Dictionaries", Digital Signal Processing, Vol 111, 2021

Conferences

A. Băltoiu, A. Pătrașcu and P. Irofti, "Graph Anomaly Detection using Dictionary Learning", International Federation of Automatic Control (IFAC), 2020

P. Irofti and A. Băltoiu, "Unsupervised Dictionary Learning for Anomaly Detection", International Traveling Workshop on Interactions between low-complexity data models and Sensing Techniques, 2020

P. Irofti and A. Băltoiu, "Malware Identification with Dictionary Learning", 27th European Signal Processing Conference (EUSIPCO), pages 1-5, IEEE, 2019

A. Băltoiu and B. Dumitrescu, "Size Adaptation of Separable Dictionary Learning with Information-Theoretic Criteria", 22th International Conference on Control Systems and Computer Science, 2019

A. Dinculescu, A. Baltoiu, C.Strungaru, L. Petrescu, C.Vizitiu, A. Mandu, V. Văleanu, "Automatic Identification of Anthropological Face Landmarks for Emotion Detection", 9th International Conference on Recent Advances in Space Technologies (RAST), pages 585-59, 2019

A. Băltoiu, L.Petrica, A. Dinculescu, C. Vizitiu, "Framework for an Embedded Emotion Assessment System for Space Science Applications", 6th IEEE International Conference on E-Health and Bioengineering, 2017

A.Nistorescu, P. Hillerin, A. Băltoiu, C. Marin, "Case Study on Muscular Response to Pulse Mechanical Stimulation after Immobilization", 6th IEEE International Conference on E-Health and Bioengineering, 2017

A. Dragomir, A. Băltoiu, P. Hillerin, "Proposal for a rate of force development (RFD) assessment methodology in dynamic conditions testing, with application in Judo." 2016

A. Dragomir, A. Băltoiu, "On the particularities of dynamic muscle force development in different judo throwing techniques. A case study." Physical Education, Sport and Health, 9th Anual International Conference, 2016

P. Hillerin, A. Băltoiu, C. Botezatu, C. Ciurea, A. Nistorescu, V. Văleanu, "Preliminary study of the mechanical properties of striated muscle in humans", International Conference of Human Movement Sciences (ICHMS), 2015

A. Băltoiu, P. Hillerin, A. Nistorescu, M. Vasiliu, V. Văleanu, T. Ion, C. Marin, "Preliminary qualitative analysis of mechanical impulse propagation dynamics in human striated muscle", EHB 2015 - IEEE International Conference on E-Health and Bioengineering, 2015

A. Dragomir, A. Băltoiu, "On the compensation phenomenon in muscle activation during a neuromuscular control exercise in swimming - A case study", Physical Education, Sport and Health, 8th Anual International Conference, 2015

V. Lungu, A. Băltoiu, Ș. Radu, "Using Emotion as Motivation in the Newtonian Emotion System", Intelligent Distributed Computing VII, Proceedings of the 7th International Symposium on Intelligent Distributed Computing, Springer, 2013

TEACHING [↑]

Since 2016 I've been a teaching assistant at the Faculty of Automatic Control and Computers, University Politehnica of Bucharest (UPB) and Faculty of Mathematics and Computer Science, University of Bucharest (UB).

Courses include Numerical Methods (UPB), Signal Processing and Using Operating Systems (UB).