Recent Advances on Bootstrap for Signal Processing

Prof. Abdelhak M. Zoubir

Signal Processing Group
Department of Electrical Engineering and Information Technology
Technische Universität Darmstadt
Germany

Abstract:

The use of more accurate models in signal processing applications such as communications, radar, sonar, biomedical engineering, speech and image processing and machine learning has become a fundamental requirement. With an improved accuracy the models have become more complex and inferential statistical signal processing required in parameter estimation, signal detection and classification, for example, has become intractable. The signal processing practitioner requires a simple but accurate method for assessing errors of estimates and answering inferential questions. Asymptotic approximations are useful only when enough data is available, which is not always possible due to time constraints, the nature of the signal or the measurement setting. In place of the formulae and tables of parametric and non-parametric procedures based on complicated mathematics and asymptotic approximations, tools such as the bootstrap are powerful for solving complex engineering problems. It is the method of an engineer's choice for solving inferential signal processing problems, such as signal detection, confidence limits estimation and model selection, to mention a few. In this talk, we first give a brief overview of the basic principle underlying the bootstrap methodology. We then discuss bootstrap techniques for independent data, followed by bootstrap techniques for dependent data. Bootstrap methods for signal detection and model selection are presented along with frequency domain bootstrap methods for spectral analysis. Real-data examples are given throughout the talk.

About the Keynote Speaker:

Abdelhak M. Zoubir is a Fellow of the IEEE and IEEE Distinguished Lecturer (Class 2010- 2011). He received his Dr.-Ing. from Ruhr- Universität Bochum, Germany in 1992. He was with Queensland University of Technology, Australia from 1992-1998 where he was Associate Professor. In 1999, he joined Curtin University of Technology, Australia as a Professor of Telecommunications and was Interim Head of the School of Electrical & Computer Engineering from 2001 until 2003. In 2003, he moved to Technische Universität Darmstadt, Germany as Professor of Signal Processing and Head of the Signal Processing Group. His research interest lies in statistical methods for signal processing with emphasis on bootstrap techniques, robust detection and estimation and array processing applied to telecommunications, radar, sonar, car engine monitoring and biomedicine. He published over 300 journal and conference papers on these areas. Professor Zoubir was Technical Chair of the 11th IEEE Workshop on Statistical Signal Processing (SSP 2001), General Co-Chair of the 3rd IEEE International Symposium on Signal Processing & Information Technology (ISSPIT 2003) and of the 5th IEEE Workshop on Sensor Array and Multi-channel Signal Processing (SAM 2008). He is the Technical Co-Chair of ICASSP-14 to be held in Florence, Italy. Dr Zoubir was an Associate Editor of the IEEE Transactions on Signal Processing (1999-2005), a Member of the Senior Editorial Board of the IEEE Journal on Selected Topics in Signal Processing (2009-2011) and he currently serves on the Editorial Boards of the EURASIP journals Signal Processing and the Journal on Advances in Signal Processing (JASP). He is the Editor-In-Chief of the IEEE Signal Processing Magazine (2012-2014). Dr Zoubir was the Chair of the IEEE SPS Technical Committee Signal Processing Theory and Methods (SPTM) (2010-2011) and a Member of the IEEE SPS Technical Committee Sensor Array and Multi-channel Signal Processing (SAM) (2007-2012). He also serves on the Board of Directors of the European Association of Signal Processing (EURASIP). He was the Guest Co-Editor of 3 special issues on topics in statistical signal processing, one of which is on the bootstrap that appeared in the IEEE Signal Processing Magazine SI 24(4) in 2007.

Keynote Speaker's web-page:

http://www.spg.tu-darmstadt.de/spg/staff_1/currentstaffmembers/zoubir.en.jsp

Advances in Multimedia Information Retrieval

Prof. Alan Hanjalic

Department of Intelligent Systems
Faculty of Electrical Engineering, Mathematics and Computer Science
Delft University of Technology
The Netherlands

Abstract:

Research in Multimedia Information Retrieval (MIR) aims at matching multimedia content and user needs and so at bringing image, audio and video content together with users. Users’ expectations regarding multimedia content access in terms of semantically rich and personalized relevance criteria have always been high and have imposed high demands on the level of sophistication of MIR solutions. The potential to develop MIR technology that meets such high demands has rapidly grown over the past twenty years by building on intensive international research effort. This growth accelerated, however, with the increasing contextualization of images, video and music in rapidly expanding social networks that link distributed content, diverse metadata and users of various profiles and interests. It is clear that user demands regarding the sophistication of MIR technology have further grown in the social network context in view of new ways of interacting with multimedia content and with other people via and about this content. However, this new context has also brought vast new opportunities for improving the quality of MIR solutions. These opportunities lie in synergetic integrations of multidisciplinary scientific contributions and rich information resources found there. In this talk, I will discuss how pursuing these opportunities can help the field not only resolve the problems that impeded its development in the past, but also address new emerging demands regarding multimedia content access.

About the Keynote Speaker:

Alan Hanjalic is a full professor and holder of the Antoni van Leeuwenhoek Chair at the Department of Intelligent Systems, Faculty of Electrical Engineering, Mathematics and Computer Science, Delft University of Technology, The Netherlands. He is also a founder and head of the Multimedia Information Retrieval Lab at the Delft University of Technology, currently hosting 10 Ph.D. students and a number of senior researchers. He received his Ph.D. in 1999 from the Delft University of Technology, Delft, The Netherlands, and his Diplom-Ingenieur (Dipl.-Ing.) degree in 1995 from the Friedrich-Alexander University in Erlangen, Germany, both in Electrical Engineering. He was a visiting scientist at Hewlett-Packard Labs, British Telecom Labs, Philips Research and Microsoft Research Asia. Research interests of Prof. Hanjalic are in the broad field of multimedia signal processing, with focus on multimedia information retrieval. He (co-)authored/edited more than 100 publications, including three books. Prof. Hanjalic was a Keynote Speaker at the Pacific-Rim Conference on Multimedia, Hong-Kong, December 2007, and at the International Conference on Multimedia Modeling, Klagenfurt, Austria, January 2012. He is an elected member of the IEEE TC on Multimedia Signal Processing and an appointed member of the Steering Committee of the IEEE Transactions on Multimedia. Prof. Hanjalic has been on editorial boards of several scientific journals, among which the IEEE Transactions on Multimedia, IEEE Transactions on Affective Computing and the International Journal of Multimedia Information Retrieval (Springer). He has served in the organization committees of the leading conferences in the multimedia field, such as ACM Multimedia (General Chair 2009, Program Chair 2007), ACM CIVR (Program Chair 2008), ACM ICMR (Program Chair 2011) and IEEE ICME (Program Chair 2012). He is a Senior Member of the IEEE.

Keynote Speaker's web-page:

http://dmirlab.tudelft.nl/users/alan-hanjalic

New Developments in Optical Technology at University of Zagreb

Prof. Zvonimir Sipus

Department of Wireless Communications
Faculty of Electrical Engineering and Computing
University of Zagreb
Croatia

Abstract:

This talk presents recent advances in optical technology performed at the Department of Wireless Communications, Faculty of Electrical Engineering and Computing, University of Zagreb. The first part of a talk briefly introduces design challenges of a new type of optical source suitable for next generation access networks. Wavelength-agnostic transceivers at the user end in colorless passive optical networks with wavelength division multiplexing (WDM-PON) offer significant cost reduction as each of the optical network units is identical. The cost and complexity of the system is further reduced by using self-seeded WDM-PON architectures in which a reflector at a remote node allows the amplified-spontaneous-emission signal emitted from the reflective semiconductor optical amplifier to seed itself. This latter type of system, although demonstrated, has not yet been adopted in the industry because it does not have sufficient link margin for commercial adoption. We have demonstrated that a new component, a modulation averaging reflector, can be used to improve the link margin and to broaden the operating conditions of the semiconductor source to warrant commercial adoption of self seeded WDM-PON communication systems. In the second part of the talk recent results in development of fiber-optic sensor systems are presented and discussed. The properties of temperature and strain sensors based on Fiber Bragg Gratings (FBG) are well known, however interrogation techniques are still not standardized and usually present a critical factor in pushing users away from optical sensors due to high price. By carefully studying the properties of several interrogation techniques and developing our own technique we will demonstrate that it is possible to significantly reduce the price of these interrogation units.

About the Keynote Speaker:

Zvonimir Sipus was born in Zagreb, Croatia, in 1964. He received the B.Sc. and M.Sc. degrees in electrical engineering from the University of Zagreb, Croatia, in 1988 and 1991, respectively, and the Ph.D. degree in electrical engineering from Chalmers University of Technology, Gothenburg, Sweden, in 1997. From 1988 to 1994, he worked at Rudjer Boskovic Institute, Zagreb, Croatia, as Research Assistant, involved in the development of detectors for explosive gases. In 1994, he joined the Antenna Group at Chalmers University of Technology, where he was involved in research projects concerning conformal antennas and soft and hard surfaces. In 1997 he joined the Faculty of Electrical Engineering and Computing, University of Zagreb, where he is now a Professor. Since 2008 he is the Head of the Department of Wireless Communications there. From 1999-2005 he was also an adjunct researcher at the Department of Electromagnetics, Chalmers University of Technology. His main research interests include numerical electromagnetics with application to antennas, microwaves, and optical communications.

Keynote Speaker's web-page:

http://www.fer.unizg.hr/zvonimir.sipus