Andrea Vitaletti

102 papers A* 1A 3B 9C 5Misc 6Journal 40Unranked 36

Year	Rank	Type	Title / Venue / Authors
2026	J	`jnl`	A Proof of Concept for a Digital Twin of an Ultrasonic Fermentation System. CoRR Francesco Saverio Sconocchia Pisoni, Andrea Vitaletti, Davide Appolloni, Federico Ortenzi, Blasco Morozzo della Rocca, Mariano José Guillén, Alessandro Contaldo
2026	J	`jnl`	A thorough assessment of the non-IID data impact in federated learning. J. Ind. Inf. Integr. Daniel Mauricio Jimenez Gutierrez, Mehrdad Hassanzadeh, Aris Anagnostopoulos, Ioannis Chatzigiannakis, Andrea Vitaletti
2026	J	`jnl`	Blockchain for the supply chain of the Italian craft beer sector: tracking and discount coupons. Int. J. Parallel Emergent Distributed Syst. Lorenzo Ariemma, Niccolò De Carlo, Diego Pennino, Maurizio Pizzonia, Andrea Vitaletti, Marco Zecchini
2026	J	`jnl`	FedLECC: Cluster- and Loss-Guided Client Selection for Federated Learning under Non-IID Data. CoRR Daniel Mauricio Jimenez Gutierrez, Giovanni Giunta, Mehrdad Hassanzadeh, Aris Anagnostopoulos, Ioannis Chatzigiannakis, Andrea Vitaletti
2026	J	`jnl`	On the security and privacy of federated learning: A survey with attacks, defenses, frameworks, applications, and future directions. Inf. Fusion Daniel Mauricio Jimenez Gutierrez, Yelizaveta Falkouskaya, José Luis Hernández-Ramos, Aris Anagnostopoulos, Ioannis Chatzigiannakis, Andrea Vitaletti
2026	J	`jnl`	On-chain global maintenance services: technical, legal and managerial implications. Int. J. Parallel Emergent Distributed Syst. Andrea Vitaletti, Maurizio Pizzonia, Marco Zecchini, Diego Pennino, Salvatore Esposito De Falco, Francesco Pacileo, Alessandro Bellini, Antonio Bonifacio, Domenico Sardanelli, Pietro Vito, Simone Naldini
2025	J	`jnl`	A Thorough Assessment of the Non-IID Data Impact in Federated Learning. CoRR Daniel Mauricio Jimenez Gutierrez, Mehrdad Hassanzadeh, Aris Anagnostopoulos, Ioannis Chatzigiannakis, Andrea Vitaletti
2025	J	`jnl`	Clust-PSI-PFL: A Population Stability Index Approach for Clustered Non-IID Personalized Federated Learning. CoRR Daniel Mauricio Jimenez Gutierrez, Mehrdad Hassanzadeh, Aris Anagnostopoulos, Ioannis Chatzigiannakis, Andrea Vitaletti
2025	B	`conf`	Decentralized Fair Exchange with Advertising. CANS Pierpaolo Della Monica, Ivan Visconti, Andrea Vitaletti, Marco Zecchini
2025	J	`jnl`	Efficient Query Verification for Blockchain Superlight Clients Using SNARKs. CoRR Stefano De Angelis, Ivan Visconti, Andrea Vitaletti, Marco Zecchini
2025	J	`jnl`	On the Security and Privacy of Federated Learning: A Survey with Attacks, Defenses, Frameworks, Applications, and Future Directions. CoRR Daniel Mauricio Jimenez Gutierrez, Yelizaveta Falkouskaya, José Luis Hernández-Ramos, Aris Anagnostopoulos, Ioannis Chatzigiannakis, Andrea Vitaletti
2025	J	`jnl`	Public Channel-Based Fair Exchange Protocols with Advertising. CoRR Pierpaolo Della Monica, Ivan Visconti, Andrea Vitaletti, Marco Zecchini
2025	J	`jnl`	Share a Tiny Space of Your Freezer to Preserve Seed Diversity. CoRR Andrea Vitaletti
2025	—	`conf`	Towards an operative definition of creative writing: a preliminary assessment of creativeness in AI and human texts. COLING Workshops Chiara Maggi, Andrea Vitaletti
2025	A*	`conf`	Trust Nobody: Privacy-Preserving Proofs for Edited Photos with Your Laptop. SP Pierpaolo Della Monica, Ivan Visconti, Andrea Vitaletti, Marco Zecchini
2024	B	`conf`	BOTQUAS: Blockchain-based Solutions for Trustworthy Data Sharing in Sustainable and Circular Economy. SEAA Alberto Amico, Vincenzo Apicella, Devis Bianchini, Alberto Butera, Matteo Cesana, Gabriele Digregorio, Massimiliano Garda, Valentina Gatteschi, Corrado Innamorati, Francesco Leotta, Stefano Longari, Maria Rosa Pizzo, Pierluigi Plebani, Noemi Romani, Letizia Tanca, Andrea Vitaletti, Stefano Zanero
2024	J	`jnl`	FedArtML: A Tool to Facilitate the Generation of Non-IID Datasets in a Controlled Way to Support Federated Learning Research. IEEE Access Daniel Mauricio Jimenez Gutierrez, Aris Anagnostopoulos, Ioannis Chatzigiannakis, Andrea Vitaletti
2024	J	`jnl`	Non-IID data in Federated Learning: A Survey with Taxonomy, Metrics, Methods, Frameworks and Future Directions. CoRR Daniel Mauricio Jimenez Gutierrez, David Solans, Mikko A. Heikkilä, Andrea Vitaletti, Nicolas Kourtellis, Aris Anagnostopoulos, Ioannis Chatzigiannakis
2024	J	`jnl`	Predicting Award Winning Research Papers at Publication Time. CoRR Riccardo Vella, Andrea Vitaletti, Fabrizio Silvestri
2024	C	`ed.`	Proceedings of the Sixth Distributed Ledger Technology Workshop (DLT 2024), Turin, Italy, May 14-15, 2024. DLT Massimo Bartoletti, Claudio Schifanella, Andrea Vitaletti
2024	J	`jnl`	Trust Nobody: Privacy-Preserving Proofs for Edited Photos with Your Laptop. IACR Cryptol. ePrint Arch. Pierpaolo Della Monica, Ivan Visconti, Andrea Vitaletti, Marco Zecchini
2023	C	`conf`	A Tale on Decentralizing an App: the Case of Copyright Management. DLT Andrea Vitaletti, Marco Zecchini
2023	—	`conf`	Application of Federated Learning Techniques for Arrhythmia Classification Using 12-Lead ECG Signals. ALGOCLOUD Daniel Mauricio Jimenez Gutierrez, Hafiz Muuhammad Hassan, Lorella Landi, Andrea Vitaletti, Ioannis Chatzigiannakis
2023	—	`conf`	Building a Cross-Chain Identity: A Self-Sovereign Identity-Based Framework. DAPPS Marco Zecchini, Michael Sober, Stefan Schulte, Andrea Vitaletti
2023	—	`conf`	Preventing Content Cloning in NFT Collections. ACNS Workshops Ivan Visconti, Andrea Vitaletti, Marco Zecchini
2022	J	`jnl`	Application of federated learning techniques for arrhythmia classification using 12-lead ECG signals. CoRR Daniel Mauricio Jimenez Gutierrez, Hafiz Muuhammad Hassan, Lorella Landi, Andrea Vitaletti, Ioannis Chatzigiannakis
2022	J	`jnl`	Blockchain as IoT Economy Enabler: A Review of Architectural Aspects. J. Sens. Actuator Networks Diego Pennino, Maurizio Pizzonia, Andrea Vitaletti, Marco Zecchini
2022	—	`conf`	Blockchain-Based Tracking of the Supply Chain of the Italian Craft Beer Sector. DLT@ITASEC Lorenzo Ariemma, Niccolò De Carlo, Diego Pennino, Maurizio Pizzonia, Andrea Vitaletti, Marco Zecchini
2022	—	`conf`	Monitoring Water Quality with a Spectrophotometer: a Proof of Concept of a Smart Buoy. PerCom Workshops Roberto Bruzzese, Ioannis Chatzigiannakis, Andrea Vitaletti
2022	—	`conf`	On-Chain Global Maintenance Services. DLT@ITASEC Alessandro Bellini, Antonio Bonifacio, Salvatore Esposito De Falco, Simone Naldini, Francesco Pacileo, Diego Pennino, Maurizio Pizzonia, Domenico Sardanelli, Andrea Vitaletti, Pietro Vito, Marco Zecchini
2022	—	`ed.`	Proceedings of the 4th Workshop on Distributed Ledger Technology co-located with the Italian Conference on Cybersecurity 2022 (ITASEC 2022), Rome, Italy, June 20, 2022. DLT@ITASEC Maurizio Pizzonia, Andrea Vitaletti
2021	J	`jnl`	Efficient Certification of Endpoint Control on Blockchain. IEEE Access Diego Pennino, Maurizio Pizzonia, Andrea Vitaletti, Marco Zecchini
2021	J	`jnl`	Empowering Citizens by a Blockchain-Based Robinson List. CoRR Albenzio Cirillo, Vito Dalena, Antonio Mauro, Francesco Mogavero, Diego Pennino, Maurizio Pizzonia, Andrea Vitaletti, Marco Zecchini
2021	C	`conf`	The Blockchain Quadrilemma: When Also Computational Effectiveness Matters. ISCC Francesco Mogavero, Ivan Visconti, Andrea Vitaletti, Marco Zecchini
2020	C	`conf`	Binding of Endpoints to Identifiers by On-Chain Proofs. ISCC Diego Pennino, Maurizio Pizzonia, Andrea Vitaletti, Marco Zecchini
2020	J	`jnl`	Binding of Endpoints to Identifiers by On-Chain Proofs. CoRR Diego Pennino, Maurizio Pizzonia, Andrea Vitaletti, Marco Zecchini
2020	—	`conf`	Decentralized robinson list. CryBlock@MOBICOM Albenzio Cirillo, Antonio Mauro, Diego Pennino, Maurizio Pizzonia, Andrea Vitaletti, Marco Zecchini
2020	J	`jnl`	From Consensus to Innovation. Evolving Towards Crowd-based User-Centered Design. Int. J. Hum. Comput. Interact. Tiziana Catarci, Andrea Marrella, Giuseppe Santucci, Mahmoud Sharf, Andrea Vitaletti, Loredana Di Lucchio, Lorenzo Imbesi, Viktor Malakuczi
2019	—	`conf`	A Case of Genetic Algorithms Supporting the Design of Collaboratively Shaped, Genetically Evolving, Products. SA Andrea Vitaletti, Ioannis Chatzigiannakis, Viktor Malakuczi, Irene Mavrommati
2019	—	`conf`	Citizens Vote to Act: smart contracts for the management of water resources in smart cities. SA Andrea Bracciali, Ioannis Chatzigiannakis, Andrea Vitaletti, Marco Zecchini
2019	—	`conf`	On Refining Design Patterns for Smart Contracts. Euro-Par Workshops Marco Zecchini, Andrea Bracciali, Ioannis Chatzigiannakis, Andrea Vitaletti
2019	J	`jnl`	Scenarios for Educational and Game Activities using Internet of Things Data. CoRR Chrysanthi Tziortzioti, Irene Mavrommati, Georgios Mylonas, Andrea Vitaletti, Ioannis Chatzigiannakis
2018	—	`conf`	Raising Awareness for Water Polution Based on Game Activities Using Internet of Things. AmI Chrysanthi Tziortzioti, Giuseppe Andreetti, Lucia Rodinò, Irene Mavrommati, Andrea Vitaletti, Ioannis Chatzigiannakis
2018	—	`conf`	Random Projection to Preserve Patient Privacy. CIKM Workshops Aris Anagnostopoulos, Fabio Angeletti, Federico Arcangeli, Chris Schwiegelshohn, Andrea Vitaletti
2018	—	`conf`	Scenarios for Educational and Game Activities using Internet of Things Data. CIG Chrysanthi Tziortzioti, Irene Mavrommati, Georgios Mylonas, Andrea Vitaletti, Ioannis Chatzigiannakis
2018	J	`jnl`	Towards an Architecture to Guarantee Both Data Privacy and Utility in the First Phases of Digital Clinical Trials. Sensors Fabio Angeletti, Ioannis Chatzigiannakis, Andrea Vitaletti
2017	J	`jnl`	Comparison of Decision Tree Based Classification Strategies to Detect External Chemical Stimuli from Raw and Filtered Plant Electrical Response. CoRR Shre Kumar Chatterjee, Saptarshi Das, Koushik Maharatna, Elisa Masi, Luisa Santopolo, Ilaria Colzi, Stefano Mancuso, Andrea Vitaletti
2017	J	`jnl`	Delivering elder-care environments utilizing TV-channel based mechanisms. J. Ambient Intell. Smart Environ. Dimitrios Amaxilatis, Ioannis Chatzigiannakis, Irene Mavrommati, Evdoxia Vasileiou, Andrea Vitaletti
2017	—	`conf`	Privacy preserving data management in recruiting participants for digital clinical trials. HumanSys@SenSys Fabio Angeletti, Ioannis Chatzigiannakis, Andrea Vitaletti
2017	Misc	`conf`	The role of blockchain and IoT in recruiting participants for digital clinical trials. SoftCOM Fabio Angeletti, Ioannis Chatzigiannakis, Andrea Vitaletti
2016	J	`jnl`	A privacy-preserving smart parking system using an IoT elliptic curve based security platform. Comput. Commun. Ioannis Chatzigiannakis, Andrea Vitaletti, Apostolos Pyrgelis
2016	J	`jnl`	Drift Removal in Plant Electrical Signals via IIR Filtering Using Wavelet Energy. CoRR Saptarshi Das, Barry Juans Ajiwibawa, Shre Kumar Chatterjee, Sanmitra Ghosh, Koushik Maharatna, Srinandan Dasmahapatra, Andrea Vitaletti, Elisa Masi, Stefano Mancuso
2016	J	`jnl`	Routing Protocols for Delay Tolerant Networks: A Reference Architecture and a Thorough Quantitative Evaluation. J. Sens. Actuator Networks Khalil Massri, Andrea Vitaletti, Alessandro Vernata, Ioannis Chatzigiannakis
2015	C	`conf`	Capturing Interactions in Face-To-Face Social Networks. WEBIST Francesco Ficarola, Andrea Vitaletti
2015	J	`jnl`	Drift removal in plant electrical signals via IIR filtering using wavelet energy. Comput. Electron. Agric. Saptarshi Das, Barry Juans Ajiwibawa, Shre Kumar Chatterjee, Sanmitra Ghosh, Koushik Maharatna, Srinandan Dasmahapatra, Andrea Vitaletti, Elisa Masi, Stefano Mancuso
2015	J	`jnl`	Extending TETRA with wireless sensor networks. Int. J. Intell. Eng. Informatics Mario Paoli, Francesco Ficarola, Ugo Maria Colesanti, Andrea Vitaletti, Simona Citrigno, Domenico Saccà
2015	—	`ch.`	Multi-robot Surveillance Through a Distributed Sensor Network. Advances in Social Media Analysis Andrea Pennisi, Fabio Previtali, Cristiano Gennari, Domenico Daniele Bloisi, Luca Iocchi, Francesco Ficarola, Andrea Vitaletti, Daniele Nardi
2015	J	`jnl`	Resource and service virtualisation in M2M and IoT platforms. Int. J. Intell. Eng. Informatics Panagiotis Karkazis, Panagiotis Trakadas, Theodore B. Zahariadis, Ioannis Chatzigiannakis, Mischa Dohler, Andrea Vitaletti, Athanasios Antoniou, Helen-Catherine Leligou, Lambros Sarakis
2014	J	`jnl`	A lightweight privacy preserving SMS-based recommendation system for mobile users. Knowl. Inf. Syst. Luca Becchetti, Lorenzo Bergamini, Ugo Maria Colesanti, Luca Filipponi, Giuseppe Persiano, Andrea Vitaletti
2014	—	`conf`	Distributed Sensor Network for Multi-robot Surveillance. ANT/SEIT Andrea Pennisi, Fabio Previtali, Francesco Ficarola, Domenico Daniele Bloisi, Luca Iocchi, Andrea Vitaletti
2014	—	`conf`	Efficient Neighbor Discovery in RFID based devices over resource-constrained DTN networks. ICC Danilo Amendola, Floriano De Rango, Khalil Massri, Andrea Vitaletti
2014	B	`conf`	REACTIVE: A peaceful coexistence between deluge and Low Power Listening. WiOpt Andrea di Cagno, Mario Paoli, Ugo Maria Colesanti, Andrea Vitaletti
2013	Misc	`conf`	DTN routing protocols on resource constrained devices: Design, implementation and first experiments. SoftCOM Khalil Massri, Andrea Vitaletti
2013	—	`conf`	Erasure-Coding Based Data Delivery in Delay Tolerant Networks. NEW2AN Khalil Massri, Roberto Beraldi, Andrea Vitaletti
2013	Misc	`conf`	Introducing the MagoNode platform. SenSys Ugo Maria Colesanti, Antonio Lo Russo, Mario Paoli, Chiara Petrioli, Andrea Vitaletti
2013	—	`conf`	MagoNode: Advantages of RF Front-ends in Wireless Sensor Networks. REALWSN Mario Paoli, Antonio Lo Russo, Ugo Maria Colesanti, Andrea Vitaletti
2013	—	`conf`	Neighbor discovery in delay tolerant networking using resource-constraint devices. Wireless Days Danilo Amendola, Floriano De Rango, Khalil Massri, Andrea Vitaletti
2013	Misc	`conf`	Plants as sensing devices: the PLEASED experience. SenSys V. Manzella, Claudio Gaz, Andrea Vitaletti, Elisa Masi, Luisa Santopolo, Stefano Mancuso, D. Salazar, J. J. de las Heras
2013	Misc	`conf`	ProvinciaSense: extending the capillary WiFi infrastructure of Lazio region with static and mobile sensor networks. SenSys Tommaso Arzilli, Francesco Ficarola, Khalil Massri, Andrea Vitaletti, Francesco Loriga, Ilaria De Marinis, Andrea Ferraresi, Riccardo Bloise, Maurizio Goretti
2013	Misc	`conf`	Structural health monitoring in an underground construction site: the roman experience. SenSys Ugo Maria Colesanti, Antonio Lo Russo, Mario Paoli, Chiara Petrioli, Andrea Vitaletti
2012	—	`conf`	First Experiences with the Implementation and Evaluation of Population Protocols on Physical Devices. GreenCom Luca Becchetti, Lorenzo Bergamini, Francesco Ficarola, Francesco Salvatore, Andrea Vitaletti
2012	—	`conf`	Population protocols on real social networks. PE-WASUN Luca Becchetti, Lorenzo Bergamini, Francesco Ficarola, Andrea Vitaletti
2012	—	`conf`	Population protocols on real social networks. SNS Luca Becchetti, Lorenzo Bergamini, Francesco Ficarola, Andrea Vitaletti
2012	J	`jnl`	Privacy support in people-centric sensing. J. Commun. Luca Becchetti, Luca Filipponi, Andrea Vitaletti
2012	—	`conf`	Routing protocols for delay tolerant networks: a quantitative evaluation. PM2HW2N@MSWiM Khalil Massri, Alessandro Vernata, Andrea Vitaletti
2011	—	`conf`	A user-centric approach to eCertificate for electronic identities (eIDs) management in mobile environment. WorldCIS Michele Schiano di Zenise, Andrea Vitaletti, David Argles
2011	B	`conf`	DISSense: An adaptive ultralow-power communication protocol for wireless sensor networks. DCOSS Ugo Maria Colesanti, Silvia Santini, Andrea Vitaletti
2011	—	`conf`	Privacy-Preserving Environment Monitoring in Networks of Mobile Devices. Networking Workshops Lorenzo Bergamini, Luca Becchetti, Andrea Vitaletti
2011	J	`jnl`	Recommending items in pervasive scenarios: models and experimental analysis. Knowl. Inf. Syst. Luca Becchetti, Ugo Maria Colesanti, Alberto Marchetti-Spaccamela, Andrea Vitaletti
2011	J	`jnl`	Urban pervasive applications: Challenges, scenarios and case studies. Comput. Sci. Rev. Ioannis Chatzigiannakis, Georgios Mylonas, Andrea Vitaletti
2010	A	`conf`	A lightweight privacy preserving SMS-based recommendation system for mobile users. RecSys Elisa Baglioni, Luca Becchetti, Lorenzo Bergamini, Ugo Maria Colesanti, Luca Filipponi, Andrea Vitaletti, Giuseppe Persiano
2010	—	`conf`	Validation of WSN simulators through a comparison with a real testbed. PE-WASUN Lorenzo Bergamini, Carlo Crociani, Andrea Vitaletti, Michele Nati
2009	J	`jnl`	Data aggregation in sensor networks: Balancing communication and delay costs. Theor. Comput. Sci. Peter Korteweg, Alberto Marchetti-Spaccamela, Leen Stougie, Andrea Vitaletti
2009	J	`jnl`	Latency-constrained aggregation in sensor networks. ACM Trans. Algorithms Luca Becchetti, Alberto Marchetti-Spaccamela, Andrea Vitaletti, Peter Korteweg, Martin Skutella, Leen Stougie
2008	B	`conf`	Data Collection in Wireless Sensor Networks for Noise Pollution Monitoring. DCOSS Luca Filipponi, Silvia Santini, Andrea Vitaletti
2008	—	`conf`	First experiences using wireless sensor networks for noise pollution monitoring. REALWSN@EuroSys Silvia Santini, Benedikt Ostermaier, Andrea Vitaletti
2008	—	`conf`	Self-Adaptive Recommendation Systems: Models and Experimental Analysis. SASO Luca Becchetti, Ugo Maria Colesanti, Alberto Marchetti-Spaccamela, Andrea Vitaletti
2007	B	`conf`	Data Aggregation in Sensor Networks: Balancing Communication and Delay Costs. SIROCCO Peter Korteweg, Alberto Marchetti-Spaccamela, Leen Stougie, Andrea Vitaletti
2007	J	`jnl`	Localized Techniques for Broadcasting in Wireless Sensor Networks. Algorithmica Devdatt P. Dubhashi, Olle Häggström, Lorenzo Orecchia, Alessandro Panconesi, Chiara Petrioli, Andrea Vitaletti
2007	—	`conf`	On the accuracy of omnet++ in the wireless sensornetworks domain: simulation vs. testbed. PE-WASUN Ugo Maria Colesanti, Carlo Crociani, Andrea Vitaletti
2007	B	`conf`	Passive Inspection of Sensor Networks. DCOSS Matthias Ringwald, Kay Römer, Andrea Vitaletti
2006	B	`conf`	Integrated Data Delivery and Interest Dissemination Techniques for Wireless Sensor Networks. GLOBECOM Michele Mastrogiovanni, Chiara Petrioli, Michele Rossi, Andrea Vitaletti, Michele Zorzi
2006	A	`conf`	Latency Constrained Aggregation in Sensor Networks. ESA Luca Becchetti, Peter Korteweg, Alberto Marchetti-Spaccamela, Martin Skutella, Leen Stougie, Andrea Vitaletti
2006	—	`conf`	Rijndael for Sensor Networks: Is Speed the Main Issue? WCAN@ICALP Andrea Vitaletti, Gianni Palombizio
2005	J	`jnl`	Parallel scheduling problems in next generation wireless networks. Networks Luca Becchetti, Stefano Leonardi, Alberto Marchetti-Spaccamela, Andrea Vitaletti, Suhas N. Diggavi, S. Muthukrishnan, Thyagarajan Nandagopal
2004	—	`conf`	Cell-ID Location Technique, Limits and Benefits: An Experimental Study. WMCSA Emiliano Trevisani, Andrea Vitaletti
2004	—	`conf`	Localized techniques for broadcasting in wireless sensor networks. DIALM-POMC Lorenzo Orecchia, Alessandro Panconesi, Chiara Petrioli, Andrea Vitaletti
2002	A	`conf`	An Experimental Study of Prefetching and Caching Algorithms for the World Wide Web. ALENEX Massimiliano Curcio, Stefano Leonardi, Andrea Vitaletti
2002	B	`conf`	Parallel scheduling problems in next generation wireless networks. SPAA Luca Becchetti, Suhas N. Diggavi, Stefano Leonardi, Alberto Marchetti-Spaccamela, S. Muthukrishnan, Thyagarajan Nandagopal, Andrea Vitaletti
2001	—	`conf`	Location based services in a wireless WAN using cellular digital packet data (CDPD). MobiDE Rittwik Jana, Theodore Johnson, S. Muthukrishnan, Andrea Vitaletti
2000	—	`conf`	Approximation Algorithms for Bandwidth and Storage Allocation Problems under Real Time Constraints. FSTTCS Stefano Leonardi, Alberto Marchetti-Spaccamela, Andrea Vitaletti
1998	—	`conf`	Randomized Lower Bounds for Online Path Coloring. RANDOM Stefano Leonardi, Andrea Vitaletti