Alexandru Lucian Georgescu

PhD Student Researcher, Faculty of Electronics, Telecommunications and Information Technology,
University Politehnica of Bucharest

Email: lucian.georgescu@speed.pub.ro


Last update: November 2019


Research Interests

  • Spoken Language Technology (Automatic Speech/Speaker Recognition, Speech Indexing, Spoken Term Detection)
  • Natural Language Processing (Statistical Language Modeling, Phonetization, Diacritics Restoration)

Education and Professional Experience

Education

  • 07.2018 – present: PhD Student
    • Faculty of Electronics, Telecommunications and Information Technology
      University Politehnica of Bucharest, Romania
    • Thesis: Methods and technologies of artificial intelligence applied in speech technology
  • 10.2016 – 06.2018:  Master of Science
    • Faculty of Electronics, Telecommunications and Information Technology
      University Politehnica of Bucharest, Romania
    • Specialty: Multimedia Technologies in Biometrics and Information Security Applications (BIOSINF)
  • 10.2011 – 09.2016:  Bachelor of Science
    • Faculty of Electronics, Telecommunications and Information Technology
      University Politehnica of Bucharest, Romania
    • Specialty: Computers and Information Technology (CTI)
  • 07.2014 – 09.2014:  Certificate Linux 1 – Fundamentals
    • Telecom Academy, Bucharest, Romania
  • 10.2011 – 06.2014:  Psycho – Pedagogical Module
    • Teacher Training Department, University Politehnica of Bucharest, Romania
  • 09.2007 – 06.2011:  Baccalaureate diploma
    • St. Sava National College, Bucharest, Romania
    • Specialty: Mathematics – Informatics
  • 05.2011:  Certificate of professional competence (Informatics)
    • St. Sava National College, Bucharest, Romania

Professional experience

  • Oct 2016 – present: Research Engineer
    •  Speech & Dialogue Laboratory (SpeeD), University Politehnica of Bucharest, Romania
  • 01.2019 – 07.2019: Research Intern
    • Xilinx Research Labs, Dublin (Ireland)
    • Automatic Speech Recognition experiments using various state-of-the-art neural network based algorithms
    • In-depth profiling in terms of model size, number of operations, number of activations
    • Dataflow simulation in order to extract some parallelism and parametrization info
    • Survey paper on deep learning architectures for automatic speech recognition
  • 10.2015 – 12.2015: Intern
    • Ixia, Bucharest (Romania)
    • Development of a keyword spotting application
  • 01.2015 – 03.2015: Intern
    • Ixia, Bucharest (Romania)
    • Development of an automatic speech recognition system with reduced vocabulary for English language
  • 06.2014 – 08.2014: Summer Intern
    • Speech & Dialogue Laboratory (SpeeD), University Politehnica of Bucharest, Romania
    • Development of automatic speech recognition systems
    • Development of web service systems

Research & Development Activity

Scientific research trace-route and achievements

  • Automatic speech recognition for Romanian language (2015 – 2017). Key role in a team which improved the first Large Vocabulary Continuous Speech Recognition (LVCSR) system for Romanian. Added acoustic modeling based on deep neural networks (DNN). More info: https://speed.pub.ro/live-transcriber-2017/
  • Speaker recognition (2014 – 2015). Key role in a team which developed a voice login web service based on speaker verification and speech recognition. More info: https://speed.pub.ro/voice-login

National research projects

  • Research assistant (2018 – present) at University Politehnica of Bucharest, in the ReTeRom project, TADARAV sub-project (research and development project funded by the Romanian Government through UEFISCDI, project coordinator Research Institute for Artificial Intelligence, Romanian Academy).
  • Research assistant (2017 – present) at University Politehnica of Bucharest, in the SPIA-VA project (research and development project funded by the Romanian Government through UEFISCDI, project coordinator University Politehnica of Bucharest, Bucharest, Romania).
  • 2016 – 2017: participated as research engineer in  project ANVSIB (“Natural-language, Voice-controlled Assistive System for Intelligent Buildings”), funded by the Romanian Government through UEFISCDI, project coordinator University Politehnica of Bucharest, ID PN-II-PT-PCCA-2013-4-0789.
  • 2016 – 2017: participated as research engineer in project SPLANN (“Automatic Baby-Language Recognition System”), funded by the Romanian Government through UEFISCDI, project coordinator Softwin Group, ID PN-II-PT-PCCA-2013-4-1443.

Awards and Participations

  • Prize of the category at the innovation contest in the field of national security, PatriotFest: “Speech Transcriber” (https://transcriptions.speed.pub.ro), Agility of Knowledge section, organized by the Ministry of National Defence, the Ministry of Internal Affairs, the Romanian Intelligence Service, Special Communications Service, and the Protocol and Guard Service, in partnership with the Association New Strategy Center, Bucharest 2019.
  • Second prize at the innovation contest in the field of national security, PatriotFest: “Live Transcriber” (https://speed.pub.ro/live-transcriber-2017), Agility of Knowledge section, organized by the Ministry of National Defence, the Ministry of Internal Affairs, the Romanian Intelligence Service, Special Communications Service, and the Protocol and Guard Service, in partnership with the Association New Strategy Center, Bucharest, 2018.
  • Participation at the Session of Scientific Papers: “Autommatic annotation of speech corpora using complementary GMM and DNN acoustic models”, organized by the Electronic Devices, Circuits and Architectures (DCAE) department from Faculty of Electronics, Telecommunications and Information Technology, University Politehnica of Bucharest, 2018.
  • Second prize at the Session of Scientific Papers: “Speaker recongnition based on GMM-UBM models using a Romanian speech corpora”, organized by the Electronic Devices, Circuits and Architectures (DCAE) department from Faculty of Electronics, Telecommunications and Information Technology, University Politehnica of Bucharest, 2018.
  • Second prize at the innovation contest in the field of national security, PatriotFest: “Web authentication service based on vocal mark”, Human Machine Interface section, organized by the Ministry of National Defence, the Ministry of Internal Affairs, the Romanian Intelligence Service, Special Communications Service, and the Protocol and Guard Service, in partnership with the Association New Strategy Center, Bucharest, 2017.
  • Third prize at the Session of Scientific Papers: “SpeeD’s DNN approach to Romanian speech recognition”, organized by the Electronic Devices, Circuits and Architectures (DCAE) department from Faculty of Electronics, Telecommunications and Information Technology, University Politehnica of Bucharest, 2016.
  • Second prize at the Session of Scientific Papers: “Web authentication service based on vocal mark”, organized by the Telecommunications department from Faculty of Electronics, Telecommunications and Information Technology, University Politehnica of Bucharest, 2015.

List of publications

Journal papers

2018

Conference papers

2019

  • Florin Iordache, Alexandru-Lucian Georgescu, Dan Oneaţă, Horia Cucu “Romanian Automatic Diacritics Restoration Challenge”, in the Proceedings of the 14th International Conference on Linguistics Resources and Tools for Natural Language Processing, Cluj-Napoca, Romania, 2019.
  • Alexandru-Lucian Georgescu, Horia Cucu, Corneliu Burileanu, “Kaldi-based DNN architectures for speech recognition in Romanian,” in the Proceedings of the 10th Conference on Speech Technology and Human-Computer Dialogue (SpeD), Timișoara, Romania, 2019.
  • Alexandru-Lucian Georgescu, Horia Cucu, Corneliu Burileanu, “Progress on automatic annotation of speech corpora using complementary ASR systems,”  in the Proceedings of the 42nd International Conference on Telecommunications and Signal Processing (TSP), 2019, Budapest, Hungary.

2018

2017

  • Alexandru-Lucian Georgescu, Horia Cucu, Corneliu Burileanu, “SpeeD’s DNN Approach to Romanian Speech Recognition,” in the Proceedings of the 9th Conference on Speech Technology and Human-Computer Dialogue (SpeD), Bucharest, Romania, 2017, 8p, ISBN 978-1-5090-6496-0.

Dissertation Thesis

Alexandru Lucian Georgescu, “Automatic Speech Recognition System in Romanian Language based on Deep Neural Networks“, Dissertation Thesis, University Politehnica of Bucharest, 2018 (scientific coordinators: Assoc. Prof. Horia Cucu), graded 10/10 [demo].

Bachelor Thesis

Alexandru Lucian Georgescu, “Software applications in spoken language technology”, Bachelor Thesis, University Politehnica of Bucharest, 2016 (scientific coordinators: Lect. Horia Cucu, Prof. Corneliu Burileanu), graded 9.70/10 [demo].