# MSc E. Isufi

*PhD student*

Signal Processing Systems (SPS), Department of Microelectronics

**PhD thesis** (Jan 2019): Graph-time signal processing: Filtering and sampling strategies

Promotor: Geert Leus

**Expertise:** Signal Processing on Graphs

**Themes:**XG - Next Generation Sensing and Communication

### Biography

Elvin Isufi was born in Albania in 1989. He received his Master of Science degree (cum laude) in Electronic and Telecommunication Engineering from University of Perugia, Italy, in 2014. From November 2013 to August 2014 he was a visiting member at Circuits and Systems group, Delft University of Technology, where he worked on his master thesis. From November 2014 until January 2019 he pursued the Ph. D. degree on signal processing on graphs at Delft University of Technology. His research interests include signal processing on graphs, specifically implementation of graph filters by ARMA recursion and stochastic signal processing on graphs, network coding and underwater communications.

### Graph Signal Processing in Action

Graph signal processing, Graph topology identification, Graph filtering, Dynamic graphs, Graph learning, Functional ultrasound, Recommender systems

**Learning Time-Varying Graphs From Online Data**

Natali, A.; Isufi, E.; Coutino, M.; Leus, G.;*IEEE Open Journal of Signal Processing*,

Volume 3, pp. 212--228, 2022. DOI: 10.1109/OJSP.2022.3178901**Simplicial Convolutional Neural Networks**

Yang, Maosheng; Isufi, E.; Leus, G.;

In*Proc. of IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)*,

Singapore, pp. 8847--8851, May 2022. DOI: 10.1109/ICASSP43922.2022.9746017**Node-Adaptive Regularization for Graph Signal Reconstruction**

Yang, Maosheng; Coutino, M.; Leus, G.; Isufi, E.;*IEEE Open Journal of Signal Processing*,

Volume 2, pp. 85--98, 2021. DOI: 10.1109/OJSP.2021.3056897**Online Graph Learning From Time-Varying Structural Equation Models**

Natali, A.; Isufi, E.; Coutino, M.; Leus, G.;

In*Proc. of Asilomar Conference on Signals, Systems, and Computers (Asilomar)*,

Monterey, California, USA, pp. 1579--1585, October 2021. DOI: 10.1109/IEEECONF53345.2021.9723163**Finite Impulse Response Filters for Simplicial Complexes**

Yang, Maosheng; Isufi, E.; Schaub, M.T.; Leus, G.;

In*Proc. of European Signal Processing Conference (EUSIPCO)*,

Dublin, Ireland, pp. 2005--2009, August 2021. DOI: 10.23919/EUSIPCO54536.2021.9616185**Topological Volterra Filters**

Leus, G.; Yang, Maosheng; Coutino, M.; Isufi, E.;

In*Proc. of IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)*,

Toronto, Ontario, Canada, pp. 5385--5399, June 2021. DOI: 10.1109/ICASSP39728.2021.9414275**Online Time-Varying Topology Identification Via Prediction-Correction Algorithms**

Natali, A.; Coutino, M.; Isufi, E.; Leus, G.;

In*Proc. of IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)*,

Rio de Janeiro, Brazil, pp. 5400--5404, July 2021. DOI: 10.1109/ICASSP39728.2021.9415053**Graph-Time Spectral Analysis for Atrial Fibrillation**

Miao Sun; Elvin Isufi; Natasja M.S. de Groot; Richard C. Hendriks;*Biomedical Signal Processing and Control*,

Volume 59, May 2020. DOI: https://doi.org/10.1016/j.bspc.2020.101915

document**Graphs, Convolutions, and Neural Networks: From Graph Filters to Graph Neural Networks**

F. Gama; E. Isufi; G. Leus; A. Ribeiro;*IEEE Signal Processing Magazine*,

Volume 37, Issue 6, pp. 128-138, 2020. DOI: 10.1109/MSP.2020.3016143

document**State-Space Network Topology Identification From Partial Observations**

M. Coutino; E. Isufi; T. Maehara; G. Leus;*IEEE Transactions on Signal and Information Processing over Networks*,

Volume 6, pp. 211-225, 2020. DOI: 10.1109/TSIPN.2020.2975393

document**Observing and Tracking Bandlimited Graph Processes from Sampled Measurements**

E. Isufi; P. Banelli; P. Di Lorenzo; G. Leus;*Signal Processing*,

Volume 177, pp. 107749, December 2020.**Node varying regularization for graph signals**

Maosheng Yang; M. Coutino; E. Isufi; G. Leus;

In*29th European Signal Processing Conference (EUSIPCO 2020)*,

Amsterdam (Netherlands), EURASIP, pp. 845-849, August 2020.

document**State-space based network topology identification**

M. Coutino; E. Isufi; T. Maehara; G. Leus;

In*29th European Signal Processing Conference (EUSIPCO 2020)*,

Amsterdam (Netherlands), EURASIP, pp. 1055-1059, August 2020.

document**Forecasting multi-dimensional processes over graphs**

Alberto Natali; Elvin Isufi; Geert Leus;

In*Proc. IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP)*,

Barcelona (Spain), May 2020. DOI: 10.1109/ICASSP40776.2020.9053522

document**Active Semi-Supervised Learning for Diffusions on Graphs**

B. Das; E. Isufi; G. Leus;

In*ICASSP 2020 - 2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)*,

pp. 9075-9079, 2020. DOI: 10.1109/ICASSP40776.2020.9054300

document**Advances in Distributed Graph Filtering**

M. Coutino; E. Isufi; G. Leus;*IEEE Tr. Signal Processing*,

Volume 67, Issue 9, pp. 2320-2333, May 2019. DOI: 10.1109/TSP.2019.2904925

document**Filter Design for Autoregressive Moving Average Graph Filters**

Jiani Liu; E. Isufi; G. Leus;*IEEE Transactions on Signal and Information Processing over Networks*,

Volume 5, Issue 1, pp. 47-60, March 2019. DOI: 10.1109/TSIPN.2018.2854627

document**Controllability of Bandlimited Graph Processes Over Random Time Varying Graphs**

F. Gama; E. Isufi; A. Ribeiro; G. Leus;*IEEE Trans. on Signal Processing*,

Volume 67, Issue 24, pp. 6440--6454, December 2019. DOI: 10.1109/TSP.2019.2952053**Forecasting Time Series With VARMA Recursions on Graphs**

E. Isufi; A. Loukas; N. Perraudin; G. Leus;*IEEE Trans. on Signal Processing*,

Volume 67, Issue 18, pp. 4870--4885, September 2019. DOI: 10.1109/TSP.2019.2929930**A Graph Signal Processing Framework for Atrial Activity Extraction**

Miao Sun; Elvin Isufi; M.S de Groot; Richard C. Hendriks;

In*27th European Signal Processing Conference (EUSIPCO 2019)*,

2019.

document**Design Strategies for Sparse Control of Random Time-Varying Networks**

M. Coutino; E. Isufi; F. Gama; A. Ribeiro; G. Leus;

In*Proc. of Asilomar Conf. on Signals, Systems, and Computers (Asilomar)*,

Pacific Grove, California, USA, pp. 184--188, November 2019. DOI: 10.1109/IEEECONF44664.2019.9049024**Graph-time signal processing**

E. Isufi;

PhD thesis, TU Delft, Fac. EEMCS, January 2019. ISBN: 978-94-028-1353-1. DOI: 10.4233/uuid:e52cc182-457c-4687-baee-d0f72af36950

document**Filter design for autoregressive moving average graph filters**

Jiani Liu; E. Isufi; G. Leus;*IEEE Transactions on Signal and Information Processing over Networks*,

2018. ISSN: 2373-776X. DOI: 10.1109/TSIPN.2018.2854627

document**Adaptive Graph Signal Processing: Algorithms and Optimal Sampling Strategies**

P. Di Lorenzo; P. Banelli; E. Isufi; S. Barbarossa; G. Leus;*IEEE Transactions on Signal Processing*,

Volume 66, Issue 13, pp. 3584-3598, July 2018. ISSN: 1053-587X. DOI: 10.1109/TSP.2018.2835384

document**Blind Graph Topology Change Detection**

E. Isufi; A. S. U. Mahabir; G. Leus;*IEEE Signal Processing Letters*,

Volume 25, Issue 5, pp. 655-659, May 2018. ISSN: 1070-9908. DOI: 10.1109/LSP.2018.2819127

document**Control of graph signals over random time-varying graphs**

F. Gama; E. Isufi; G. Leus; A. Ribeiro;

In*2018 IEEE Int. Conf. on Acoustics, Speech and Signal Processing (ICASSP)*,

Calgary (Canada), IEEE, pp. 4169-4173, April 2018. ISSN: 2379-190X. DOI: 10.1109/ICASSP.2018.8462381

document**Edge-Variant Graph Filters**

G. Leus; M. Coutino; E. Isufi;

In*Graph Signal Processing Workshop (GSP18)*,

Lausanne (CH), IEEE, June 2018.**Observing Bandlimited Graph Processes**

E. Isufi; G. Leus; P. Banelli; P. Di Lorenzo;

In*Graph Signal Processing Workshop (GSP18)*,

Lausanne (CH), June 2018.**Blind Graph Topology Change Detection**

E. Isufi; G. Leus;

In*Graph Signal Processing Workshop (GSP18)*,

Lausanne (CH), June 2018.**Distributed Wiener-Based Reconstruction of Graph Signals**

E. Isufi; P. Di Lorenzo; P. Banelli; G. Leus;

In*2018 IEEE Statistical Signal Processing Workshop (SSP)*,

pp. 21-25, June 2018. DOI: 10.1109/SSP.2018.8450828

document**Observing Bandlimited Graph Processes from Subsampled Measurements**

E. Isufi; P. Banelli; P. Di Lorenzo; G. Leus;

In*52nd Asilomar Conference on Signals, Systems and Computers*,

IEEE, November 2018.**On the Limits of Finite-Time Distributed Consensus through Successive Local Linear Operations**

M. Coutino; E. Isufi; G. Leus;

In*52nd Asilomar Conference on Signals, Systems and Computers*,

IEEE, November 2018.**Autoregressive Moving Average Graph Filtering**

E. Isufi; A. Loukas; A. Simonetto; G. Leus;*IEEE Trans. Signal Processing*,

Volume 65, Issue 2, pp. 274-288, January 2017. DOI: 10.1109/TSP.2016.2614793

document**Filtering Random Graph Processes Over Random Time-Varying Graphs**

E. Isufi; A. Loukas; A. Simonetto; G. Leus;*IEEE Transactions on Signal Processing*,

Volume 65, Issue 16, pp. 4406-4421, August 2017. ISSN: 1053-587X. DOI: 10.1109/TSP.2017.2706186

document**Autoregressive moving average graph filters--a stable distributed implementation**

E. Isufi; A. Loukas; G. Leus;

In*Int. Conf. Audio Speech Signal Proc. (ICASSP)*,

New Orleans (USA), IEEE, pp. 4119-4123, March 2017. DOI: 10.1109/ICASSP.2017.7952931

document**Distributed sparsified graph filters for denoising and diffusion tasks**

E. Isufi; G. Leus;

In*Int. Conf. Audio Speech Signal Proc. (ICASSP)*,

New Orleans (USA), IEEE, pp. 5865-5869, March 2017. DOI: 10.1109/ICASSP.2017.7953281

document**Distributed Recursive Least Squares Strategies for Adaptive Reconstruction of Graph Signals**

P. Di Lorenzo; E. Isufi; P. Banelli; S. Barbarossa; G. Leus;

In*25th European Signal Processing Conference (EUSIPCO 2017)*,

Kos (Greece), EURASIP, pp. 2353-2357, August 2017. ISBN 978-0-9928626-7-1. DOI: 10.23919/EUSIPCO.2017.8081618

document**Autoregressive moving average graph filter design**

Jiani Liu; E. Isufi; G. Leus;

In*2017 5th IEEE Global Conference on Signal and Information Processing (GlobalSIP)*,

Montreal, Canada, IEEE, pp. 593-597, November 2017.

document**Distributed Edge-Variant Graph Filters**

M. Coutino; E. Isufi; G. Leus;

In*2017 IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP)*,

Curacao, IEEE, December 2017. ISBN 978-1-5386-1250-7.**Advanced flooding-based routing protocols for underwater sensor networks**

E. Isufi; H. Dol; G. Leus;*EURASIP Journal on Advances in Signal Processing*,

Volume 2016:52, Issue 1, pp. 1-12, January 2016. DOI: 10.1186/s13634-016-0346-y

document**Separable Autoregressive Moving Average Graph-Temporal Filters**

E. Isufi; A. Loukas; A. Simonetto; G. Leus;

In*EUSIPCO*,

Budapest (Hungary), August 2016.

document**2-Dimensional Finite Impulse Response Graph-Temporal Filters**

E. Isufi; G. Leus; P. Banelli;

In*IEEE Global Conference on Signal and Information Processing (GlobalSIP)*,

Washington DC, USA, IEEE, December 2016.

document**Autoregressive Moving Average Graph Filter Design**

Jiani Liu; E. Isufi; G. Leus;

In*6th Joint WIC/IEEE Symposium on Information Theory and Signal Processing in the Benelux*,

IEEE, 2016.

document**Stochastic Signal Processing on Time-Varying Graphs**

E. Isufi; A. Simonetto; A. Loukas; G. Leus;

In*Proc. of the IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP 2015)*,

Cancun, Mexico, December 2015.

document

Extended version**Network Coding for Flooding-Based Routing in Underwater Sensor Networks**

E. Isufi; G. Leus; H. Dol;

In*Proceedings of the International Conference on Underwater Networks and Systems (WUWNET'14)*,

Rome, Italy, ACM, November 2014. ISBN 978-1-4503-3277-4. DOI: 10.1145/2671490.2674570

document

## BibTeX support

Last updated: 4 Apr 2019

### Elvin Isufi

Alumnus- Left in 2018
- Now: Postdoc at Penn State, USA
- Personal webpage

### MSc students

### Alumni

- Gaia Zin (SPS) (2021)