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246 results on '"Lax, Gianluca"'

2. Enabling Lawful Interception in Environments Protected by IoT Safeguard

Author

Canino, Aurelio Loris, Lax, Gianluca, Goos, Gerhard, Series Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Kö, Andrea, editor, Kotsis, Gabriele, editor, Tjoa, A Min, editor, and Khalil, Ismail, editor

Published
2024
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4. A Blockchain-Based Solution to Chain (Im)Material Art

Author

Arena, Marinella, Lax, Gianluca, Russo, Antonia, Ribeiro, Diogo, Series Editor, Naser, M. Z., Series Editor, Stouffs, Rudi, Series Editor, Bolpagni, Marzia, Series Editor, Giordano, Andrea, editor, Russo, Michele, editor, and Spallone, Roberta, editor

Published
2024
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6. Improving Opinion Spam Detection by Cumulative Relative Frequency Distribution

Author

Fazzolari, Michela, Buccafurri, Francesco, Lax, Gianluca, and Petrocchi, Marinella

Subjects
Computer Science - Social and Information Networks, Computer Science - Computation and Language, Computer Science - Machine Learning
Abstract

Over the last years, online reviews became very important since they can influence the purchase decision of consumers and the reputation of businesses, therefore, the practice of writing fake reviews can have severe consequences on customers and service providers. Various approaches have been proposed for detecting opinion spam in online reviews, especially based on supervised classifiers. In this contribution, we start from a set of effective features used for classifying opinion spam and we re-engineered them, by considering the Cumulative Relative Frequency Distribution of each feature. By an experimental evaluation carried out on real data from Yelp.com, we show that the use of the distributional features is able to improve the performances of classifiers., Comment: Manuscript accepted for publication in ACM Journal of Data and Information Quality. This is the pre-final version, before proofs checking

Published
2020

9. A Graph-Based Approach to Detect Anomalies Based on Shared Attribute Values

Author

Brauer, Steffen, Fisichella, Marco, Lax, Gianluca, Romeo, Carlo, Russo, Antonia, Filipe, Joaquim, Editorial Board Member, Ghosh, Ashish, Editorial Board Member, Prates, Raquel Oliveira, Editorial Board Member, Zhou, Lizhu, Editorial Board Member, Mahmud, Mufti, editor, Ieracitano, Cosimo, editor, Kaiser, M. Shamim, editor, Mammone, Nadia, editor, and Morabito, Francesco Carlo, editor

Published
2022
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18. eIDAS Public Digital Identity Systems: Beyond Online Authentication to Support Urban Security

Author

Buccafurri, Francesco, Lax, Gianluca, Nicolazzo, Serena, Nocera, Antonino, Akan, Ozgur, Series editor, Bellavista, Paolo, Series editor, Cao, Jiannong, Series editor, Coulson, Geoffrey, Series editor, Dressler, Falko, Series editor, Ferrari, Domenico, Series editor, Gerla, Mario, Series editor, Kobayashi, Hisashi, Series editor, Palazzo, Sergio, Series editor, Sahni, Sartaj, Series editor, Shen, Xuemin Sherman, Series editor, Stan, Mircea, Series editor, Xiaohua, Jia, Series editor, Zomaya, Albert Y., Series editor, Longo, Antonella, editor, Zappatore, Marco, editor, Villari, Massimo, editor, Rana, Omer, editor, Bruneo, Dario, editor, Ranjan, Rajiv, editor, Fazio, Maria, editor, and Massonet, Philippe, editor

Published
2018
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19. A System for Privacy-Preserving Analysis of Vehicle Movements

Author

Lax, Gianluca, Buccafurri, Francesco, Nicolazzo, Serena, Nocera, Antonino, Ermidio, Filippo, Akan, Ozgur, Series editor, Bellavista, Paolo, Series editor, Cao, Jiannong, Series editor, Coulson, Geoffrey, Series editor, Dressler, Falko, Series editor, Ferrari, Domenico, Series editor, Gerla, Mario, Series editor, Kobayashi, Hisashi, Series editor, Palazzo, Sergio, Series editor, Sahni, Sartaj, Series editor, Shen, Xuemin Sherman, Series editor, Stan, Mircea, Series editor, Xiaohua, Jia, Series editor, Zomaya, Albert Y., Series editor, Longo, Antonella, editor, Zappatore, Marco, editor, Villari, Massimo, editor, Rana, Omer, editor, Bruneo, Dario, editor, Ranjan, Rajiv, editor, Fazio, Maria, editor, and Massonet, Philippe, editor

Published
2018
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21. Integrating Digital Identity and Blockchain

Author

Buccafurri, Francesco, Lax, Gianluca, Russo, Antonia, Zunino, Guillaume, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Panetto, Hervé, editor, Debruyne, Christophe, editor, Proper, Henderik A., editor, Ardagna, Claudio Agostino, editor, Roman, Dumitru, editor, and Meersman, Robert, editor

Published
2018
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22. Enhancing Histograms by Tree-Like Bucket Indices

Author

Buccafurri, Francesco, Lax, Gianluca, Sacca', Domenico, Pontieri, Luigi, and Rosaci, Domenico

Subjects
Computer Science - Data Structures and Algorithms
Abstract

Histograms are used to summarize the contents of relations into a number of buckets for the estimation of query result sizes. Several techniques (e.g., MaxDiff and V-Optimal) have been proposed in the past for determining bucket boundaries which provide accurate estimations. However, while search strategies for optimal bucket boundaries are rather sophisticated, no much attention has been paid for estimating queries inside buckets and all of the above techniques adopt naive methods for such an estimation. This paper focuses on the problem of improving the estimation inside a bucket once its boundaries have been fixed. The proposed technique is based on the addition, to each bucket, of 32-bit additional information (organized into a 4-level tree index), storing approximate cumulative frequencies at 7 internal intervals of the bucket. Both theoretical analysis and experimental results show that, among a number of alternative ways to organize the additional information, the 4-level tree index provides the best frequency estimation inside a bucket. The index is later added to two well-known histograms, MaxDiff and V-Optimal, obtaining the non-obvious result that despite the spatial cost of 4LT which reduces the number of allowed buckets once the storage space has been fixed, the original methods are strongly improved in terms of accuracy., Comment: 26 pages, 9 figures

Published
2005

23. Tweetchain: An Alternative to Blockchain for Crowd-Based Applications

Author

Buccafurri, Francesco, Lax, Gianluca, Nicolazzo, Serena, Nocera, Antonino, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Cabot, Jordi, editor, De Virgilio, Roberto, editor, and Torlone, Riccardo, editor

Published
2017
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24. A Threat to Friendship Privacy in Facebook

Author

Buccafurri, Francesco, Lax, Gianluca, Nicolazzo, Serena, Nocera, Antonino, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Buccafurri, Francesco, editor, Holzinger, Andreas, editor, Kieseberg, Peter, editor, Tjoa, A Min, editor, and Weippl, Edgar, editor

Published
2016
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25. Implementing Advanced Electronic Signature by Public Digital Identity System (SPID)

Author

Buccafurri, Francesco, Fotia, Lidia, Lax, Gianluca, Hutchison, David, Editorial Board Member, Kanade, Takeo, Editorial Board Member, Kittler, Josef, Editorial Board Member, Kleinberg, Jon M., Editorial Board Member, Mattern, Friedemann, Editorial Board Member, Mitchell, John C., Editorial Board Member, Naor, Moni, Editorial Board Member, Pandu Rangan, C., Editorial Board Member, Terzopoulos, Demetri, Editorial Board Member, Tygar, Doug, Editorial Board Member, Weikum, Gerhard, Series Editor, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Kő, Andrea, editor, and Francesconi, Enrico, editor

Published
2016
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26. A Middleware to Allow Fine-Grained Access Control of Twitter Applications

Author

Buccafurri, Francesco, Lax, Gianluca, Nicolazzo, Serena, Nocera, Antonino, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Boumerdassi, Selma, editor, Renault, Éric, editor, and Bouzefrane, Samia, editor

Published
2016
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27. Range Query Integrity in Cloud Data Streams with Efficient Insertion

Author

Buccafurri, Francesco, Lax, Gianluca, Nicolazzo, Serena, Nocera, Antonino, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Foresti, Sara, editor, and Persiano, Giuseppe, editor

Published
2016
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36. A Model to Support Multi-Social-Network Applications

Author

Buccafurri, Francesco, Lax, Gianluca, Nicolazzo, Serena, Nocera, Antonino, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Kobsa, Alfred, Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Meersman, Robert, editor, Panetto, Hervé, editor, Dillon, Tharam, editor, Missikoff, Michele, editor, Liu, Lin, editor, Pastor, Oscar, editor, Cuzzocrea, Alfredo, editor, and Sellis, Timos, editor

Published
2014
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37. Trust-Based Intrusion Tolerant Routing in Wireless Sensor Networks

Author

Buccafurri, Francesco, Coppolino, Luigi, D’Antonio, Salvatore, Garofalo, Alessia, Lax, Gianluca, Nocera, Antonino, Romano, Luigi, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Kobsa, Alfred, Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Bondavalli, Andrea, editor, and Di Giandomenico, Felicita, editor

Published
2014
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39. Driving Global Team Formation in Social Networks to Obtain Diversity

Author

Buccafurri, Francesco, Lax, Gianluca, Nicolazzo, Serena, Nocera, Antonino, Ursino, Domenico, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Kobsa, Alfred, Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Casteleyn, Sven, editor, Rossi, Gustavo, editor, and Winckler, Marco, editor

Published
2014
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40. Measuring Betweenness Centrality in Social Internetworking Scenarios

Author

Buccafurri, Francesco, Lax, Gianluca, Nicolazzo, Serena, Nocera, Antonino, Ursino, Domenico, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Demey, Yan Tang, editor, and Panetto, Hervé, editor

Published
2013
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41. A Trust-Based Approach for Detecting Compromised Nodes in SCADA Systems

Author

Buccafurri, Francesco, Comi, Antonello, Lax, Gianluca, Rosaci, Domenico, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, Klusch, Matthias, editor, Thimm, Matthias, editor, and Paprzycki, Marcin, editor

Published
2013
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43. Supporting Information Spread in a Social Internetworking Scenario

Author

Buccafurri, Francesco, Lax, Gianluca, Nocera, Antonino, Ursino, Domenico, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, Appice, Annalisa, editor, Ceci, Michelangelo, editor, Loglisci, Corrado, editor, Manco, Giuseppe, editor, Masciari, Elio, editor, and Ras, Zbigniew W., editor

Published
2013
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44. Enhancing Trust-Based Competitive Multi Agent Systems by Certified Reputation : (Short Paper)

Author

Buccafurri, Francesco, Comi, Antonello, Lax, Gianluca, Rosaci, Domenico, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Meersman, Robert, editor, Panetto, Hervé, editor, Dillon, Tharam, editor, Rinderle-Ma, Stefanie, editor, Dadam, Peter, editor, Zhou, Xiaofang, editor, Pearson, Siani, editor, Ferscha, Alois, editor, Bergamaschi, Sonia, editor, and Cruz, Isabel F., editor

Published
2012
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45. Discovering Links among Social Networks

Author

Buccafurri, Francesco, Lax, Gianluca, Nocera, Antonino, Ursino, Domenico, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, Flach, Peter A., editor, De Bie, Tijl, editor, and Cristianini, Nello, editor

Published
2012
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