Publications | Dr. Christos Tzagkarakishttps://ctzag.github.io/publications/PublicationsHugo Blox Builder (https://hugoblox.com)en-usTue, 01 Sep 2026 00:00:00 +0000https://ctzag.github.io/media/icon.svgPublicationshttps://ctzag.github.io/publications/When Does Conformalization Help? A Cross-Paradigm Analysis of Probabilistic Electricity Price Forecastinghttps://ctzag.github.io/publications/setn-2026-conformalization/Tue, 01 Sep 2026 00:00:00 +0000https://ctzag.github.io/publications/setn-2026-conformalization/A Comparative Evaluation of Probabilistic Electricity Price Forecasting Across Market Regimeshttps://ctzag.github.io/publications/helors-2025-price-forecasting/Sat, 01 Nov 2025 00:00:00 +0000https://ctzag.github.io/publications/helors-2025-price-forecasting/Efficient Pattern-Based Analysis of Network Flows in IoT Systemshttps://ctzag.github.io/publications/balkancom-2025-efficient/Tue, 01 Jul 2025 00:00:00 +0000https://ctzag.github.io/publications/balkancom-2025-efficient/A Machine Learning Approach for the NLP-Based Analysis of Cyber Threats and Vulnerabilities of the Healthcare Ecosystemhttps://ctzag.github.io/publications/mdpi-sensors-2023-ml/Sun, 01 Jan 2023 00:00:00 +0000https://ctzag.github.io/publications/mdpi-sensors-2023-ml/Evaluating Short-Term Forecasting of Multiple Time Series in IoT Environmentshttps://ctzag.github.io/publications/eusipco-2022-evaluating/Mon, 01 Aug 2022 00:00:00 +0000https://ctzag.github.io/publications/eusipco-2022-evaluating/Explainable Machine Learning Pipeline for Twitter Bot Detection During the 2020 US Presidential Electionshttps://ctzag.github.io/publications/elsevier-si-2022-explainable/Wed, 01 Jun 2022 00:00:00 +0000https://ctzag.github.io/publications/elsevier-si-2022-explainable/Outcome Prediction in Critically-Ill Patients with Venous Thromboembolism and/or Cancer Using Machine Learning Algorithms: External Validation and Comparison with Scoring Systemshttps://ctzag.github.io/publications/mdpi-ijms-2022-outcome/Wed, 01 Jun 2022 00:00:00 +0000https://ctzag.github.io/publications/mdpi-ijms-2022-outcome/Identification of Twitter Bots Based on an Explainable Machine Learning Framework: The US 2020 Elections Case Studyhttps://ctzag.github.io/publications/aaai-icwsm-2022-identification/Sat, 01 Jan 2022 00:00:00 +0000https://ctzag.github.io/publications/aaai-icwsm-2022-identification/Automated Mortality Prediction in Critically-Ill Patients with Thrombosis using Machine Learninghttps://ctzag.github.io/publications/bibe-2020-automated/Thu, 01 Oct 2020 00:00:00 +0000https://ctzag.github.io/publications/bibe-2020-automated/Impact Sounds Classification for Interactive Applications via Discriminative Dictionary Learninghttps://ctzag.github.io/publications/eusipco-2019-impact/Sun, 01 Sep 2019 00:00:00 +0000https://ctzag.github.io/publications/eusipco-2019-impact/Botnet Attack Detection at the IoT Edge Based on Sparse Representationhttps://ctzag.github.io/publications/giots-2019-botnet/Sat, 01 Jun 2019 00:00:00 +0000https://ctzag.github.io/publications/giots-2019-botnet/The CE-IoT Framework for Green ICT Organizationshttps://ctzag.github.io/publications/smace-2019-ceiot/Wed, 01 May 2019 00:00:00 +0000https://ctzag.github.io/publications/smace-2019-ceiot/Joint Wideband Source Localization and Acquisition Based on a Grid-Shift Approachhttps://ctzag.github.io/publications/waspaa-2017-joint/Sun, 01 Oct 2017 00:00:00 +0000https://ctzag.github.io/publications/waspaa-2017-joint/Joint Low-Rank Representation and Matrix Completion Under a Singular Value Thresholding Frameworkhttps://ctzag.github.io/publications/eusipco-2014-jointlrmc/Mon, 01 Sep 2014 00:00:00 +0000https://ctzag.github.io/publications/eusipco-2014-jointlrmc/Reconstruction of Missing Features Based on a Low-Rank Assumption for Robust Speaker Identificationhttps://ctzag.github.io/publications/iisa-2014-reconstruction/Tue, 01 Jul 2014 00:00:00 +0000https://ctzag.github.io/publications/iisa-2014-reconstruction/Sparsity Based Robust Speaker Identification Using a Discriminative Dictionary Learning Approachhttps://ctzag.github.io/publications/eusipco-2013-sparsity/Sun, 01 Sep 2013 00:00:00 +0000https://ctzag.github.io/publications/eusipco-2013-sparsity/Robust Speaker Identification Using Matrix Completion Under a Missing Data Imputation Frameworkhttps://ctzag.github.io/publications/spars-2013-robust/Mon, 01 Jul 2013 00:00:00 +0000https://ctzag.github.io/publications/spars-2013-robust/Single-Channel and Multi-Channel Sinusoidal Audio Coding Using Compressed Sensinghttps://ctzag.github.io/publications/ieee-taslp-2011-mccs/Fri, 01 Jul 2011 00:00:00 +0000https://ctzag.github.io/publications/ieee-taslp-2011-mccs/Robust Text-Independent Speaker Identification Using Short Test and Training Sessionshttps://ctzag.github.io/publications/eusipco-2010-robust/Sun, 01 Aug 2010 00:00:00 +0000https://ctzag.github.io/publications/eusipco-2010-robust/A Multichannel Sinusoidal Model Applied to Spot Microphone Signals for Immersive Audiohttps://ctzag.github.io/publications/ieee-taslp-2009-multichannel/Sun, 01 Nov 2009 00:00:00 +0000https://ctzag.github.io/publications/ieee-taslp-2009-multichannel/Exploiting the Sparsity of the Sinusoidal Model Using Compressed Sensing for Audio Codinghttps://ctzag.github.io/publications/spars-2009-exploiting/Wed, 01 Apr 2009 00:00:00 +0000https://ctzag.github.io/publications/spars-2009-exploiting/Modeling and Coding of Spot Microphone Signals for Immersive Audio Based on the Sinusoidal Modelhttps://ctzag.github.io/publications/eusipco-2008-modeling/Fri, 01 Aug 2008 00:00:00 +0000https://ctzag.github.io/publications/eusipco-2008-modeling/Low Bitrate Coding of Spot Audio Signals for Interactive and Immersive Audio Applicationshttps://ctzag.github.io/publications/springer-2008-lowbitrate/Tue, 01 Jan 2008 00:00:00 +0000https://ctzag.github.io/publications/springer-2008-lowbitrate/Modeling Spot Microphone Signals Using the Sinusoidal Plus Noise Approachhttps://ctzag.github.io/publications/waspaa-2007-modeling/Mon, 01 Oct 2007 00:00:00 +0000https://ctzag.github.io/publications/waspaa-2007-modeling/Sinusoidal Modeling of Spot Microphone Signals Based on Noise Transplantation for Multichannel Audio Codinghttps://ctzag.github.io/publications/eusipco-2007-sinusoidal/Sat, 01 Sep 2007 00:00:00 +0000https://ctzag.github.io/publications/eusipco-2007-sinusoidal/Musical Genre Classification via Generalized Gaussian and Alpha-Stable Modelinghttps://ctzag.github.io/publications/icassp-2006-musical/Mon, 01 May 2006 00:00:00 +0000https://ctzag.github.io/publications/icassp-2006-musical/