Sifaleras Angelo
  • +30 2310 891.884
  • sifalera uom.gr
  • Office: C4, 428
  • +30 2310 891.881

    Sifaleras Angelo

    Professor
    Department of Applied Informatics

    Professor, Director (MSc in Artificial Intelligence and Data Analytics)


    Academic Area

    Mathematical Programming - Network Optimization

    Curriculum Vitae
    Academic Titles
    • B.Sc. in Mathematics, School of Sciences, Aristotle University of Thessaloniki, Greece, (1999).
    • Ph.D. in Applied Informatics, University of Macedonia, Thessaloniki, Greece, (2007).
    Research Interests

    Mathematical Programming
    Network Optimization
    Heuristic Methods

    Teaching


    • COMMUNICATION NETWORKS MODELING AND OPTIMIZATION
      (SD0103)

    Type
    ELECTIVE

    Department Abbreviation
    MAI

    Department
    MASTER IN APPLIED INFORMATICS

    Course Outlines

    Η περιγραφή του μαθήματος δεν είναι διαθέσιμη

    • COMPUTATIONAL OPTIMIZATION
      (AIDA103)

    Type
    COMPULSORY

    Department Abbreviation
    ΜΤΝΑΔ

    Department
    MSC IN ARTIFICIAL INTELLIGENCE AND DATA ANALYTICS

    Course Outlines

    Η περιγραφή του μαθήματος δεν είναι διαθέσιμη

    • LINEAR ALGEBRA
      (AIC102)

    Type
    COMPULSORY

    Department Abbreviation
    AI

    Department
    DEPARTMENT OF APPLIED INFORMATICS

    Course Outlines

    Εξάμηνο: 1ο (Χειμερινό) | Κατεύθυνση: ΕΤΥ-ΠΣ | Υποχρεωτικό Κορμού | Εβδ.διδασκαλία: 3 | Πιστωτικές Μονάδες (ECTS): 5

    Διδάσκοντες: Σιφαλέρας Άγγελος

    Μαθησιακά αποτελέσματα

    Η Γραμμική Άλγεβρα, έχει συνεισφέρει σημαντικά στην ανάπτυξη διαφόρων κλάδων των Μαθηματικών, ενώ επίσης βρίσκει εφαρμογές στην Οικονομία, την Πληροφορική, και τη Μηχανική. Ο λογισμός των πινάκων καθώς και άλλες βασικές έννοιες όπως π.χ. οι διανυσματικοί χώροι, αποτελούν βασικά εργαλεία για την κατανόησή και μελέτη των γραμμικών συναρτήσεων. Οι φοιτητές/τριες που ολοκληρώνουν με επιτυχία το μάθημα θα έχουν αποκτήσει:

    i. κατανόηση των βασικών εννοιών της Γραμμικής Άλγεβρας,
    ii. ικανότητα διαμόρφωσης και επίλυσης προβλημάτων Γραμμικής Άλγεβρας χρησιμοποιώντας αναλυτικές μεθόδους.
    iii. ικανότητα χρήσης λογισμικού σε σύγχρονες γλώσσες προγραμματισμού (π.χ. SageMath) για την επίλυση προβλημάτων Γραμμικής Άλγεβρας.

    Το μάθημα αποσκοπεί στις ακόλουθες γενικές ικανότητες:

    • Λήψη αποφάσεων
    • Εργασία σε διεπιστημονικό περιβάλλον
    • Αναζήτηση, ανάλυση και σύνθεση δεδομένων και πληροφοριών, με τη χρήση και των απαραίτητων τεχνολογιών
    • Παράγωγή νέων ερευνητικών ιδεών

    Περιεχόμενο μαθήματος

    Στην πρώτη ενότητα του μαθήματος παρουσιάζονται ορισμένες θεμελιώδεις εισαγωγικές έννοιες, σχετικά με πίνακες. Στη δεύτερη ενότητα εισάγονται και μελετώνται οι διανυσματικοί χώροι και οι υπόχωροι τους, καθώς επίσης περιγράφεται και η σχέση της γραμμικής εξάρτησης. Τέλος, στην τρίτη ενότητα μελετάται το πρόβλημα των ιδιοτιμών, καθώς και θέματα που αφορούν στη διαγωνιοποίηση πίνακα και στον υπολογισμό των δυνάμεων ενός πίνακα.

    • βασικά στοιχεία Γραμμικής Άλγεβρας,
    • πίνακες (ορισμοί - ιδιότητες πράξεων),
    • γραμμικά συστήματα,
    • διανυσματικοί χώροι - εφαρμογές,
    • προβολές – γραμμικοί μετασχηματισμοί,
    • ιδιοτιμές – ιδιοδιανύσματα, και
    • εξοικείωση με το λογισμικό SageMath.

    Αξιολόγηση φοιτητών

    Η γλώσσα αξιολόγησης είναι στην Ελληνική. Η μέθοδος αξιολόγησης αφορά σε γραπτή εξέταση στο τέλος του εξαμήνου.

    Τα κριτήρια αξιολόγησης είναι αναρτημένα στην ιστοσελίδα του μαθήματος (Compus), ώστε να είναι προσβάσιμα στους φοιτητές.

    Βιβλιογραφία

    (Ένα από τα παρακάτω:)
    41960366 ΓΡΑΜΜΙΚΗ ΑΛΓΕΒΡΑ ΜΕ ΤΟ MATLAB : ΝΕΑ ΕΚΔΟΣΗ, Τύπος: Σύγγραμμα, Στεφανίδης Γιώργος, 2014, ΖΥΓΟΣ, ISBN: 978-618-5063-08-5

    31174 Γραμμική άλγεβρα, Τύπος: Σύγγραμμα, Δονάτος Γεώργιος Σ., Αδάμ Μαρία Χ., 2008, Gutenberg, ISBN: 978-960-01-1193-4

    50659814 Γραμμική Άλγεβρα, Τύπος: Σύγγραμμα, Μάργαρης Αθανάσιος, 2015, ΤΖΙΟΛΑ, ISBN: 978-960-418-471-2

    Συμπληρωματικό υλικό

    Σημειώσεις και Ασκήσεις

    • OPERATIONS RESEARCH
      (AIC602)

    Type
    COMPULSORY

    Department Abbreviation
    AI

    Department
    DEPARTMENT OF APPLIED INFORMATICS

    Course Outlines

    Η περιγραφή του μαθήματος δεν είναι διαθέσιμη

    Publications


    • Books (37 records)

    Περιλαμβάνει Βιβλία ή/και μονογραφίες σε διεθνείς ή ελληνικούς εκδοτικούς οίκους. Κεφάλαια ή άρθρα συλλογικών τόμων ή επιμέλεια τόμων σε διεθνείς ή ελληνικούς εκδοτικούς οίκους.

      2023

      • Mladenović N., Sifaleras A., and Sleptchenko A.(Eds.), "Special issue dedicated to the 8th International Conference on Variable Neighborhood Search (ICVNS 2021)", Optimization Letters, Springer, Vol. 17, No. 9, pp. 1979-1980, 2023.

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      • Sleptchenko A., Sifaleras A., and Hansen P. (Eds.), Variable Neighborhood Search, 9th International Conference, ICVNS 2022, Abu Dhabi, U.A.E., October 25-28, 2022, Revised Selected Papers, LNCS, Vol. 13863, Springer-Verlag, 2023.

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      • Karakostas P. and Sifaleras A., "Recent trends in sustainable supply chain optimization", in M. Fathi, E. Zio, and P.M. Pardalos (Eds.), Handbook of Smart Energy Systems, Springer, pp. 3095-3117, 2023.

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      2022

      • Mladenović N., Pardalos P. M., Sifaleras A., and Benmansour R. (Eds.), "Preface to the Special issue on Variable Neighborhood Search", Optimization Letters, Springer, Vol. 16, No. 1, pp. 1-4, 2022.

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      2021

      • Benmansour R. and Sifaleras A., "Scheduling in parallel machines with two servers: the restrictive case", Variable Neighborhood Search (ICVNS 2021), Lecture Notes in Computer Science, Springer, Cham, Vol. 12559, pp. 71-82, 2021.

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      • Mladenović N., Sleptchenko A., Sifaleras A., and Omar M. (Eds.), Variable Neighborhood Search, 8th International Conference, ICVNS 2021, Abu Dhabi, U.A.E., March 15-19, 2021, Revised Selected Papers, LNCS, Vol. 12559, Springer-Verlag, 2021.

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      2020

      • Sifaleras A. and Stephanides G., Linear Algebra with MATLAB and SageMath (in Greek), TZIOLA Publications, Thessaloniki, ISBN: 978-960-418-487-3, 2020.

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      • Sifaleras A., Mladenović N., and Pardalos P. M. (Eds.), "Preface to the Special Issue ICVNS 2018", Journal of Global Optimization, Springer, Vol. 78, No. 2, pp. 239-240, 2020.

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      • Benmansour R., Sifaleras A., and Mladenović N., (Eds.), Variable Neighborhood Search, 7th International Conference, ICVNS 2019, Rabat, Morocco, October 3-5, 2019, Revised Selected Papers, LNCS, Vol. 12010, Springer Cham, 2020.

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      • Pentelas A., Sifaleras A., and Koloniari G., "A reduced variable neighborhood search approach for feature selection in cancer classification", Variable Neighborhood Search (ICVNS 2019), Lecture Notes in Computer Science, Springer, Cham, Vol. 12010, pp. 1-16, 2020.

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      • Kalatzantonakis P., Sifaleras A., and Samaras N., "On a cooperative VNS parallelization strategy for the capacitated vehicle routing problem", in N. Matsatsinis, Y. Marinakis, and P. M. Pardalos (Eds.), Learning and Intelligent Optimization (LION13), Lecture Notes in Computer Science, Springer, Cham, Vol. 11968, pp. 231-239, 2020.

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      • Karakostas P., Sifaleras A., and Georgiadis M. C., "Adaptive GVNS heuristics for solving the Pollution Location Inventory Routing Problem", in N. Matsatsinis, Y. Marinakis, and P. M. Pardalos (Eds.), Learning and Intelligent Optimization (LION13), Lecture Notes in Computer Science, Springer, Cham, Vol. 11968, pp. 157-170, 2020.

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      • Antoniadis N., Cordy M., Sifaleras A., and Le Traon Y., "Preventing overloading incidents on smart grids: A multiobjective combinatorial optimisation approach", in B. Dorronsoro, P. Ruiz, J.C. de la Torre, D. Urda, and E.G. Talbi (Eds.), Optimization and Learning (OLA 2020), Springer Communications in Computer and Information Science, Vol. 1173, pp. 269-281, 2020.

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      • Sifaleras A. and Konstantaras I., "A survey on variable neighborhood search methods for supply network inventory", in I. Bychkov, V. A. Kalyagin, P. M. Pardalos, and O. Prokopyev (Eds.), Network Algorithms, Data Mining, and Applications (NET 2018), Springer Proceedings in Mathematics & Statistics, Vol. 315, pp. 71-82, 2020.

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      • Mladenović N., Sifaleras A., and Kuzmanović M., (Eds.), Advances in Operational Research in the Balkans, Springer Proceedings in Business and Economics, Springer International Publishing, 2020.

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      2019

      • Karakostas P., Sifaleras A., and Georgiadis M.C., "Basic VNS algorithms for solving the pollution location inventory routing problem", Variable Neighborhood Search. Lecture Notes in Computer Science, Vol. 11328. Springer, Cham, pp. 64-76, 2019.

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      • Sifaleras A., Salhi S., and Brimberg J., (Eds.), Variable Neighborhood Search, 6th International Conference, ICVNS 2018, Sithonia, Greece, October 4–7, 2018, Revised Selected Papers, LNCS, Vol. 11328, Springer International Publishing, 2019.

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      • Sifaleras A. and Petridis K. (Eds.), Operational Research in the Digital Era - ICT Challenges, Springer Proceedings in Business and Economics, Springer, Cham, 2019.

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      • Skouri K., Sifaleras A., and Konstantaras I., "Open problems in green supply chain modeling and optimization with carbon emission targets", in P. M. Pardalos and A. Migdalas (Eds.), Open Problems in Optimization and Data Analysis, Springer Optimization and Its Applications, Springer, Cham, Vol. 141, pp. 83-90, 2018.

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      • Koloniari G. and Sifaleras A., "Game-theoretic approaches in cloud and P2P networks: Issues and challenges", in A. Sifaleras and K. Petridis (Eds.), Operational Research in the Digital Era – ICT Challenges, Springer Proceedings in Business and Economics, Springer, Cham, pp. 11-22, 2019.

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      2018

      • Coelho V.N., Santos H.G., Coelho I.M., Oliveira T.A., Penna P.H.V., Souza M.J.F., and Sifaleras A. (Eds.), "5th International Conference on Variable Neighborhood Search (ICVNS'17)", Electronic Notes in Discrete Mathematics, Elsevier B.V., Vol. 66, pp. 1-5, 2018.

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      2017

      • Souravlas S. and Sifaleras A., "Network load balancing using modular arithmetic computations", in P. Vlamos (Ed.), Advances in Experimental Medicine and Biology, Vol. 988, Springer, Cham, pp. 271-280, 2017.

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      • Souravlas S. and Sifaleras A., "On the detection of overlapped network communities via weight redistributions", in P. Vlamos (Ed.), Advances in Experimental Medicine and Biology, Vol. 988, Springer, Cham, pp. 205-214, 2017.

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      • Pardo E.G. and Sifaleras A. (Eds.), "4th International Conference on Variable Neighborhood Search (ICVNS'16)", Electronic Notes in Discrete Mathematics, Elsevier B.V., Vol. 58, pp. 1-5, 2017

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      • Mladenović N., Sifaleras A., and Sörensen K. (Eds.), "Editorial to the Special Cluster on Variable Neighborhood Search, Variants and Recent Applications", International Transactions in Operational Research, Wiley, Vol. 24, No. 3, pp. 507-508, 2017.

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      • Karakalidis A. and Sifaleras A., "Solving Portfolio Optimization Problems using AMPL", in E. Grigoroudis and M. Doumpos (Eds.), Operational Research in Business & Economics, Springer Proceedings in Business and Economics, pp. 167-184, 2017.

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      2015

      • Jarboui B., Sifaleras A., and Rebai A. (Eds.), "3rd International Conference on Variable Neighborhood Search (VNS'14)", Electronic Notes in Discrete Mathematics, Elsevier B.V., Vol. 47, pp. 1-4, 2015.

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      • Sifaleras A., "Classification of Network Optimization Software Packages", in Mehdi Khosrow-Pour (Ed.), Encyclopedia of Information Science and Technology, 3rd ed., IGI Global, Hershey, PA, USA, pp. 7054-7062, 2015.

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      2013

      • Sifaleras A., Paparrizos K., and Demyanov V.F. (Guest Eds.), "Advances in Discrete Optimization", Optimization. A Journal of Mathematical Programming and Operations Research, Taylor & Francis Publications, Vol.62, No. 8, pp. 1003-1006, 2013.

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      • Migdalas A., Sifaleras A., Georgiadis C.K., Papathanasiou J., and Stiakakis E. (Eds.), Optimization Theory, Decision Making, and Operations Research Applications, Springer Proceedings in Mathematics & Statistics, Vol. 31, Springer New York, ISBN: 978-1-4614-5133-4, 322 p., 2013.

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      2012

      • Sifaleras A., Urošević D., and Mladenović N. (Guest Eds.), "EURO Mini Conference (MEC XXVIII) on Variable Neighborhood Search", Electronic Notes in Discrete Mathematics, Elsevier B.V., Vol. 39, pp. 1-4, 2012.

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      • Sifaleras A., Urošević D., and Mladenović N. (Eds.), "Book of Proceedings of the 28th EURO Mini Conference on Variable Neighborhood Search (MEC XXVIII - VNS)", Belgrade, Serbia, ISBN: 978-86-7680-260-9, 296 p., 2012.
      • Sifaleras A., Papathanasiou J. and Demange M. (Guest Eds), "Editorial: Special issue on New Combinatorial Optimisation Models for Decision Making", International Journal of Applied Management Science, Inderscience Enterprises Ltd., Vol. 4, No. 3, pp. 219-223, 2012.

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      2010

      • Stiakakis E. and Sifaleras A., "Evaluating the performance of decision making units in the food production industry", in B. Manos, K. Paparrizos, N. Matsatsinis and J. Papathanasiou (Eds), Decision Support Systems in Agriculture, Food and the Environment: Trends, Applications and Advances, IGI Global, Chapter 9, pp. 173-192, 2010.

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      2009

      • Maros I, Arampatzis G. and Sifaleras A. (Guest Eds) "Editorial: Special issue οn Optimization Models in Environment and Sustainable Development", Operational Research, Springer Berlin/Heidelberg, Vol. 9, No 3, pp. 225-227, 2009.

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      • Παπαρρίζος Κ., Σαμαράς Ν. και Σιφαλέρας Α., "Δικτυακή Βελτιστοποίηση", Εκδόσεις Ζυγός, Θεσσαλονίκη, ISBN: 978-960-8065-68-0, 2009.

      2007

      • Σιφαλέρας Α., "Ανάπτυξη και Υλοποίηση Αλγορίθμων Εξωτερικών Σημείων Τύπου Simplex για Προβλήματα Δικτυακής Βελτιστοποίησης", Διδακτορική Διατριβή, Τμήμα Εφαρμοσμένης Πληροφορικής, Πανεπιστήμιο Μακεδονίας Οικονομικών και Κοινωνικών Επιστημών, 2007.

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      • Scientific Journals (47 records)

      Περιλαμβάνει Άρθρα σε διεθνή ή ελληνικά επιστημονικά περιοδικά (με κριτές).

        2024

        • Karakostas P. and Sifaleras A., "The pollution traveling salesman problem with refueling", to appear in Computers & Operations Research, Elsevier, Article ID 106661, 2024.

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        • Tadaros M., Sifaleras A., and Migdalas A., "A variable neighborhood search approach for solving a real-world hierarchical multi-echelon vehicle routing problem involving HCT Vehicles", Computers & Operations Research, Elsevier, Vol. 165, Article ID 106594, 2024.

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        2023

        • Souravlas S., Anastasiadou S., and Sifaleras A., “Mathematical modeling for further improving task scheduling on Big Data systems”, Vol. 20, No. 1, Article ID 40, Computational Management Science, Springer, 2023.

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        • Sifaleras A., "In memory of Professor Nenad Mladenović (1951–2022)", Operations Research Forum, Springer, Vol. 4, No. 1, Article ID 6, 2023.

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        • Kalatzantonakis P., Sifaleras A., and Samaras N., "A Reinforcement Learning - Variable Neighborhood Search Method for the Capacitated Vehicle Routing Problem", Expert Systems with Applications, Elsevier, Vol. 213, Article ID 118812, 2023.

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        • Elidrissi A., Benmansour R., and Sifaleras A., "General variable neighborhood search for the parallel machine scheduling problem with two common servers", Optimization Letters, Springer, Vol. 17, No. 9, pp. 2201-2231, 2023.

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        2022

        • Karakostas P. and Sifaleras A., "A double-adaptive general variable neighborhood search algorithm for the solution of the traveling salesman problem", Applied Soft Computing, Elsevier, Vol. 121, Article ID 108746, 2022.

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        • Antoniadis N., Cordy M., Sifaleras A., and Le Traon Y., "A variable neighborhood search simheuristic algorithm for reliability optimization of smart grids under uncertainty", International Transactions in Operational Research, John Wiley & Sons Ltd, Vol. 29, No. 4, pp. 2172-2200, 2022.

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        • Sifaleras A., Karakalidis A., and Nikolaidis Y., "Shift scheduling in multi-item production lines: A case study of a mineral water bottling company", International Journal of Systems Science: Operations & Logistics, Taylor & Francis Publications, Vol. 9, No. 1, pp. 75-86, 2022.

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        • Karakostas P., Sifaleras A., and Georgiadis M. C., "Variable neighborhood search-based solution methods for the pollution location-inventory-routing problem", Optimization Letters, Springer, Vol. 16, No. 1, pp. 211-235, 2022.

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        2021

        • Kamanas P.A., Sifaleras A., and Samaras N., "Slot machine RTP optimization using variable neighborhood search", Mathematical Problems in Engineering, Hindawi, Vol. 2021, Article ID 8784065, 2021.

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        • Souravlas S., Sifaleras A., Tsintogianni M., and Katsavounis S., "A classification of community detection methods in social networks: A survey", International Journal of General Systems, Taylor & Francis Publications, Vol. 50, No. 1, pp. 63-91, 2021.

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        2020

        • Karakostas P., Sifaleras A., and Georgiadis M. C., "Adaptive variable neighborhood search solution methods for the fleet size and mix pollution location-inventory-routing problem", Expert Systems with Applications, Elsevier BV, Vol. 153, Article ID 113444, 2020.

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        • Souravlas S., Sifaleras A., and Katsavounis S., "Hybrid CPU-GPU community detection in weighted networks", IEEE Access, Vol. 8, pp. 57527-57551, 2020.

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        • Kalatzantonakis P., Sifaleras A., and Samaras N., "Cooperative versus non-cooperative parallel variable neighborhood search strategies: a case study on the capacitated vehicle routing problem", Journal of Global Optimization, Springer, Vol. 78, No. 2, pp. 327-348, 2020.

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        • Petridis K., Arabatzis G., and Sifaleras A., "Mathematical optimization models for fuelwood production", Annals of Operations Research, Springer, Vol. 294, pp. 59-74, 2020.

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        2019

        • Roussou I., Stiakakis E., and Sifaleras A., "An empirical study on the commercial adoption of digital currencies", Information Systems and e-Business Management, Springer, Vol. 17, pp. 223-259, 2019.

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        • Karakostas P., Sifaleras A., and Georgiadis M. C., "A general variable neighborhood search-based solution approach for the location-inventory-routing problem with distribution outsourcing", Computers & Chemical Engineering, Elsevier Ltd., Vol. 126, pp. 263-279, 2019.

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        • Souravlas S., Sifaleras A., and Katsavounis S., "A parallel algorithm for community detection in social networks, based on path analysis and threaded binary trees", IEEE Access, Vol. 7, No. 1, pp. 20499-20519, 2019.

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        • Souravlas S. and Sifaleras A., "Trends in data replication strategies: A survey", International Journal of Parallel, Emergent and Distributed Systems, Taylor & Francis Publications, Vol. 34, No. 2, pp. 222-239, 2019

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        • Voulgaropoulou S., Samaras N., and Sifaleras A., "Computational complexity of the Exterior Point Simplex Algorithm", Operational Research. An International Journal, Springer Berlin / Heidelberg, Vol. 19, No. 2, pp, 297-316, 2019.

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        2018

        • Souravlas S., Sifaleras A., and Katsavounis S., "A novel, interdisciplinary, approach for community detection based on remote file request", IEEE Access, Vol. 6, No. 1, pp. 68415-68428, 2018

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        • Souravlas S. and Sifaleras A., "Efficient community-based data distribution over multicast trees", IEEE Transactions on Computational Social Systems, Vol. 5, No. 1, pp. 229-243, 2018.

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        2017

        • Marinakis Y., Migdalas A., and Sifaleras A., "A hybrid particle swarm optimization - variable neighborhood search algorithm for constrained shortest path problems", European Journal of Operational Research, Elsevier Ltd., Vol. 261, No. 3, pp. 819-834, 2017.

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        • Antoniadis N. and Sifaleras A., "A hybrid CPU-GPU parallelization scheme of variable neighborhood search for inventory optimization problems", Electronic Notes in Discrete Mathematics, Elsevier B.V., Vol. 58, pp. 47-54, 2017

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        • Souravlas S. and Sifaleras A., "Binary-tree based estimation of file requests for efficient data replication", IEEE Transactions on Parallel and Distributed Systems, Vol. 28, No. 7, pp. 1839-1852, 2017.

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        • Cunha J. Ο., Konstantaras I., Melo R. Α., and Sifaleras A., "On multi-item economic lot-sizing with remanufacturing and uncapacitated production", Applied Mathematical Modelling, Elsevier Ltd., Vol. 50, pp. 772-780, 2017.

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        • Sifaleras A. and Konstantaras I., "Variable neighborhood descent heuristic for solving reverse logistics multi-item dynamic lot-sizing problems", Computers & Operations Research, Elsevier Ltd., Vol. 78, pp. 385-392, 2017.

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        2015

        • Sifaleras A. and Konstantaras I., "General variable neighborhood search for the multi-product dynamic lot sizing problem in closed-loop supply chain", Electronic Notes in Discrete Mathematics, Elsevier B.V., Vol. 47, pp. 69-76, 2015.

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        • Paparrizos K., Samaras N., and Sifaleras A., "Exterior Point Simplex-type Algorithms for Linear and Network Optimization Problems", Annals of Operations Research, Springer US, Vol. 229, No. 1, pp 607-633, 2015.

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        • Sifaleras A., Konstantaras I., and Mladenović N., "Variable neighborhood search for the economic lot sizing problem with product returns and recovery", International Journal of Production Economics, Elsevier Ltd., Vol. 160, pp. 133-143, 2015.

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        2014

        • Psannis K.E., Xinogalos S., and Sifaleras A., "Convergence of Internet of things and mobile cloud computing", Systems Science & Control Engineering: An Open Access Journal, Taylor & Francis Publications, Vol. 2, No. 1, pp. 476-483, 2014

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        2013

        • Geranis G. and Sifaleras A., "Dynamic trees in exterior-point Simplex-type algorithms for network flow problems", Electronic Notes in Discrete Mathematics, Elsevier B.V., Vol. 41, pp. 93-100, 2013.

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        • Sifaleras A., "Minimum cost network flows: Problems, algorithms, and software", Yugoslav Journal of Operations Research, Vol. 23, No. 1, pp.3-17, 2013.

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        • Stiakakis E. and Sifaleras A., "Combining the Priority Rankings of DEA and AHP Methodologies: A Case Study on an ICT Industry", International Journal of Data Analysis Techniques and Strategies, Inderscience Enterprises Ltd., Vol. 5, No. 1, pp. 101-114, 2013.

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        • Lazaridis V., Samaras N., and Sifaleras A., "An empirical study on factors influencing the effectiveness of algorithm visualization", Computer Applications in Engineering Education, Wiley Periodicals, Inc., Vol. 21, No. 3, pp. 410-420, 2013.

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        2012

        • Geranis G., Paparrizos K., and Sifaleras A., "On a dual network exterior point simplex type algorithm and its computational behavior", RAIRO - Operations Research, EDP Sciences, Vol. 46, No. 3, pp. 211-234, 2012.

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        2010

        • Voudouris K., Polemio M., Kazakis N. and Sifaleras A., "An agricultural decision support system for optimal land use regarding groundwater vulnerability", International Journal of Information Systems and Social Change, IGI Global, Vol. 1, No. 4, pp. 66-79, 2010.

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        • Papamanthou Ch., Paparrizos K., Samaras N. and Sifaleras A., "On the initialization methods of an exterior point algorithm for the assignment problem", International Journal of Computer Mathematics, Taylor & Francis Publications, Vol. 87, No. 8, pp. 1831-1846, 2010.

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        2009

        • Paparrizos K., Samaras N. and Sifaleras A., "An exterior simplex type algorithm for the minimum cost network flow problem", Computers & Operations Research, Elsevier Ltd., Vol. 36, No. 4, pp. 1176-1190, 2009.

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        • Samaras N., Sifaleras A. and Triantafyllidis C., "A primal - dual exterior point algorithm for linear programming problems", Yugoslav Journal of Operations Research, Vol. 19, No. 1, pp. 123-132, 2009.

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        • Geranis G., Paparrizos K. and Sifaleras A., "A dual exterior point simplex type algorithm for the minimum cost network flow problem", Yugoslav Journal of Operations Research, Vol. 19, No. 1, pp. 157-170, 2009.

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        • Baloukas Th., Paparrizos K. and Sifaleras A., "An Animated Demonstration of the Uncapacitated Network Simplex Algorithm", INFORMS Transactions on Education, INFORMS, Vol. 10, No. 1, pp. 34-40, 2009.

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        2007

        • Lazaridis V, Paparrizos K., Samaras N. and Sifaleras A., "Visual LinProg: A web-based educational software for linear programming", Computer Applications in Engineering Education, Wiley Periodicals, Inc., Vol. 15, No. 1, pp. 1-14, 2007.

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        • Andreou D., Paparrizos K., Samaras N. and Sifaleras A., "Visualization of the network exterior primal simplex algorithm for the minimum cost network flow problem", Operational Research. An International Journal, Springer Berlin/Heidelberg, Vol. 7, No. 3, pp. 449-464, 2007.

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        2006

        • Karagiannis P., Markelis I., Paparrizos K., Samaras N. and Sifaleras A., "E - learning technologies: employing matlab web server to facilitate the education of mathematical programming", The International Journal of Mathematical Education in Science and Technology, Taylor & Francis Publications, Vol. 37, No. 7, pp. 765-782, 2006.

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        2005

        • Andreou D., Paparrizos K., Samaras N. and Sifaleras A., "Application of a new network - enabled solver for the assignment problem in computer - aided education", Journal of Computer Science, Science Publications, New York, USA, Vol. 1, No. 1, pp. 19-23, 2005.

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        • Conferences (26 records)

        Περιλαμβάνει Άρθρα σε δημοσιευμένα πρακτικά διεθνών ή ελληνικών συνεδρίων (με κριτές).

          2017

          • Souravlas S. and Sifaleras A., "On minimizing memory and computation overheads for binary-tree based data replication", in Proc. of the 22nd IEEE Symposium on Computers and Communications (ISCC 2017), 3-6 July, Heraklion, Greece, pp. 1296-1299, 2017.

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          2015

          • Papalitsas Ch., Giannakis K., Andronikos Th., Theotokis D., and Sifaleras A., "Initialization methods for the TSP with time windows using variable neighborhood search", in IEEE Proc. of the 6th International Conference on Information, Intelligence, Systems and Applications (IISA 2015), 6-8 July, Corfu, Greece, 2015.

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          • Stiakakis E. and Sifaleras A., "Comparison of DEA Models Relating e-Health and Hospital Efficiency", in Proc. of the XLII International Symposium on Operations Research (SYM-OP-IS 2015), 15-18 September, Silver Lake Resort, Serbia, pp. 659-662, 2015.
          • Karakalidis A. and Sifaleras A., "Solving Portfolio Optimization Problems using AMPL", in Proc. of the 4th International Symposium and 26th National Conference on Operational Research (HELORS), 4-6 June, Chania, Greece, pp. 267-271, 2015.

          2013

          • Argyriou G. and Sifaleras A., "An AMPL optimization software library for Data Envelopment Analysis", in Proc. of the XI Balkan Conference on Operational Research (BALCOR 2013), 7-10 September, Belgrade-Zlatibor, Serbia, pp. 105-113, 2013.

          2012

          • Xinogalos S., Psannis K., and Sifaleras A., "Recent advances delivered by HTML 5 in mobile cloud computing applications: a survey", in ACM Proc. of the 5th Balkan Conference in Informatics (BCI 2012), 16-20 September, Novi Sad, Serbia, pp. 199-204, 2012.

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          2010

          • Karakostas P., Lazaridis A. and Sifaleras A., "Design & Optimization of Large Scale Networks: A Case Study on Electricity Transportation Networks", in Proc. of the Student Conference, organized by the University of Macedonia, Thessaloniki, 5 November, pp. 87-100, 2010.

          2009

          • Stiakakis E., Sifaleras A. and Samaras N., "The transition from traditional healthcare to e-health: A case study on the evaluation of the performance of e-health providers", in Proc. of the 21st National Conference of Hellenic Operational Research Society (HELORS), 28-30 May, Athens, Greece, Vol. 1, pp. 48-70, 2009.
          • Ploskas N., Samaras N. and Sifaleras A., "A parallel implementation of an exterior point algorithm for linear programming problems", in Proc. of the 9th Balkan Conference on Operational Research (BALCOR 2009), 2-6 September, Constanta, Romania, 2009.
          • Geranis G., Paparrizos K. and Sifaleras A., "On the Computational Behavior of a Dual Network Exterior Point Simplex Algorithm for the Minimum Cost Network Flow Problem", in Proc. of the International Network Optimization Conference (INOC 2009), 26-29 April, Pisa, Italy, 2009.

          2007

          • Samaras N. and Sifaleras A., "A Comparative Computational Study of Exterior Point Algorithms for the Assignment Problem, in Proc. of the 19th National Conference of Hellenic Operational Research Society (HELORS), 21-23 June, Arta, Greece, 2007.
          • Geranis G., Paparrizos K. and Sifaleras A., "A dual exterior point simplex type algorithm for the minimum cost network flow problem", in Proc. of the 8th Balkan Conference on Operational Research (BALCOR 2007), 14-17 September, Belgrade-Zlatibor, Serbia, pp. 137-147, 2007.
          • Samaras N., Sifaleras A. and Triantafyllidis C., "A primal - dual exterior point algorithm for linear programming problems", in Proc. of the 8th Balkan Conference on Operational Research (BALCOR 2007), 14-17 September, Belgrade-Zlatibor, Serbia, pp. 75-83, 2007.
          • Rossiou E. and Sifaleras A., "Blended Methods to Enhance Learning: An Empirical Study of Factors Affecting Student Participation in the use of e-Tools to Complement F2F Teaching of Algorithms", in Proc. of the 6th European Conference on e-Learning (ECEL 2007), 4-5 October, Copenhagen, Denmark, pp. 519-528, 2007.

          2006

          • Paparrizos K., Samaras N. and Sifaleras A., "Some preliminary results on the cycling problem for the network exterior point simplex algorithm", in Proc. of the Seventh International Conference on Operations and Quantitative Management (ICOQM-VII), 3-5 August, Jaipur, India, pp. 536-540, 2006.
          • Badr E. S, Moussa M., Paparrizos K., Samaras N. and Sifaleras A., "Some computational results on MPI Parallel Implementation of Dense Simplex Method", in Proc. of World Academy of Science, Engineering and Technology (PWASET), Vol. 23, pp. 39-42, (presented in the Seventeenth International Conference on Computer & Information Science and Engineering (CISE 2006), 8-10 December, Cairo, Egypt, 2006.

          2005

          • Badr E. S, Paparrizos K., Samaras N. and Sifaleras A., "On the basis inverse of the exterior point simplex algorithm", in Proc. of the 17th National Conference of Hellenic Operational Research Society (HELORS), 16-18 June, Rio, Greece, pp. 677-687, 2005.
          • Doulamis N., Karagiannis P., Paparrizos K., Sifaleras A. and Doulamis A., "A Reconfigurable Mobile Agent Architecture Enhanced with Recursive Relevance Feedback Mechanism for Interactive Multimedia Retrieval", in Proc. of the 7th International Workshop of the EU Network of Excellence DELOS on Audio-Visual Content and Information Visualization in Digital Libraries (AVIVDiLib 2005), 4-6 May, Cortona, Italy, pp. 188-191, 2005.
          • Doulamis N., Karagiannis P., Sifaleras A. and Paparrizos K., "Dynamic video content decomposition: an efficient scheme for personalized video content navigation over the web", in Proc. of the 6th International Workshop on Image Analysis for Multimedia Interactive Services (WIAMIS '05), 13-15 April, Montreux, Switzerland, 2005.
          • Baloukas Th., Paparrizos K. and Sifaleras A., "Promoting Operations Research education using a new web - accessible didactic tool", in Proc. of the 7th Balkan Conference on Operational Research (BACOR '05), 25-28 May, Constanta, Romania, pp. 393-398, 2005.
          • Karagiannis P., Paparrizos K., Samaras N. and Sifaleras A., "A new simplex type algorithm for the minimum cost network flow problem", in Proc. of the 7th Balkan Conference on Operational Research (BACOR '05), 25-28 May, Constanta, Romania, pp. 133-139, 2005.

          2004

          • Karagiannis P., Paparrizos K., Samaras N. and Sifaleras A., "Employing Mobile Agents to Secure Local Networks", in Proc. of the 1st IEEE International Conference on Information & Communication Technologies: From Theory to Applications (ICTTA' 04), 19-23 April, Damascus, Syria, pp. 501-502, 2004.

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          • Paparrizos K., Samaras N. and Sifaleras A., "A learning tool for the visualization of general, directed or undirected rooted trees", WIT Transactions on Information and Communication Technologies, Vol. 30, WIT Press, in K. Morgan & J.M. Spector (Eds), pp. 205-213, 2004, presented at the 1st International Conference on New Learning Paradigms and New Learning Tools (New Learning 2004), 10-12 May, Skiathos, Greece.

          2003

          • Dosios K., Paparrizos K., Samaras N. and Sifaleras A., "NetPro, An Educational Platform for Network Optimization", in Proc. of 16th National Conference of Hellenic Operational Research Society (HELORS), 25-27 September, Larissa, Greece, Vol. 1, pp. 287-295, 2003.
          • Dosios K., Paparrizos K., Samaras N. and Sifaleras A., "An Efficient Modification of the Primal-Dual Two Paths Simplex Algorithm", in T.E. Simos (Ed), World Scientific Publishing Co., River Edge, NJ, Vol. 1, pp. 144-147, presented at the International Conference on Computational Methods in Sciences and Engineering (ICCMSE 2003), 12-16 September, Kastoria, Greece, 2003.

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          2002

          • Dosios K., Paparrizos K., Papatzikos N and Sifaleras A., "LinPro, an Educational Informational System for Linear Programming", in Proc. of 15th National Conference of Hellenic Operational Research Society (HELORS), 31/10-1/11, Tripoli, Greece, pp. 182-189, 2002.
          • Other (17 records)

          Περιλαμβάνει Παρουσιάσεις σε διεθνή ή ελληνικά συνέδρια χωρίς δημοσίευση σε πρακτικά.

            2023

            • Kalatzantonakis P., Sifaleras A., and Samaras N., "Al-Driven Optimization strategies exploring combinatorial landscape with Al/ML-Driven Metaheuristics", presented at the International Conference on Mathematical Models, Engineering and Environment, 26-28 May, Thessaloniki, Greece, pp. 13, (book of abstracts), 2023.
            • Karakostas P., Alexiou D., and Sifaleras A., "Optimal design of an urban air-pollution monitoring network", presented at the International Conference on Mathematical Models, Engineering and Environment, 26-28 May, Thessaloniki, Greece, pp. 9, (book of abstracts), 2023.

            2018

            • Samaras N. and Sifaleras A., "On a new method for generating random, optimal, linear optimization problems", presented at the XIII Balkan Conference on Operational Research (BALCOR 2018), 25-28 May, Belgrade, Serbia, pp. 35, (book of abstracts), 2018.
            • Petridis K., Sifaleras A., and Arabatzis G., "A bilevel scheduling algorithm for maximizing NPV in forests with different rotation ages", presented at the 5th Conference οn Economics of Natural Resources and the Environment (5th ENVECON), 1-3 November, Volos, Greece, pp. 40, (book of abstracts), 2018.

            2015

            • Lelaki K. and Sifaleras A., "Facility location: Mathematical models and applications", presented in the 12th Student Conference on Management Science and Technology, 14 May, Athens, Greece, pp. 97-99 (book of abstracts), 2015, (in Greek).

            2013

            • Sifaleras A. and Koloniari G., "A survey of game-theoretic approaches in P2P networks", presented at the XI Balkan Conference on Operational Research (BALCOR 2013), 7-10 September, Belgrade-Zlatibor, Serbia, pp. 9 (book of abstracts), 2013.
            • Argyriou G. and Sifaleras A., "Solving data envelopment analysis problems using AMPL", presented at the Workshop on Efficiency in Higher Education, 24-25 June, Thessaloniki, Greece, pp. 11 (book of abstracts), 2013.

            2012

            • Marinakis Y., Migdalas A., and Sifaleras A., "A hybrid Particle Swarm Optimization - Variable Neighborhood Search Algorithm for Constrained Shortest Path Problems", presented at the 28th EURO Mini Conference on Variable Neighborhood Search (MEC XXVIII - VNS), 4-7 October, pp. 21-22 (book of abstracts), Herceg Novi, Montenegro, 2012.
            • Samaras N. and Sifaleras A., "Exterior Point Simplex-type Algorithms for Linear and Network Optimization Problems", In: 21st International Symposium on Mathematical Programming (ISMP 2012), 19-24 August, Berlin, Germany, pp. 107 (book of abstracts), 2012.

            2011

            • Sifaleras A. and Davidović T., "Invited Report on BALCOR 2011 - 10th Balkan Conference on Operational Research", Yugoslav Journal of Operations Research, Vol. 21, No. 2, pp. 329-331, 2011.
            • Geranis G.,Paparrizos K. and Sifaleras A., Use of dynamic trees in the dual network exterior point simplex algorithm for the minimum cost network flow problem, presented in the 1st International Symposium and 10th Balkan Conference on Operational Research (BALCOR 2011), 22-24 September, Thessaloniki, Greece, pp. 99 (book of abstracts), 2011.

            2010

            • Stiakakis E. and Sifaleras A., "Comparing DEA and AHP Methodologies: A Case Study on Information and Communication Technology Industries", presented at the 7th Multicriteria Decision Analysis meeting, 30/9-2/10, Orestiada, (book of abstracts), 2010.

            2008

            • Geranis G., Paparrizos K. and Sifaleras A., "Computational experience with a dual network exterior point simplex algorithm for the minimum cost network flow problem", in Proc. of the 20th National Conference of Hellenic Operational Research Society (HELORS), 19-21 June, Spetses, Greece, pp. 25-26 (book of abstracts), 2008.
            • Geranis G., Paparrizos K. and Sifaleras A., "On a dual network exterior point simplex algorithm for the minimum cost network flow problem and its empirical behavior", in Proc. of the 21st Conference of the European Chapter on Combinatorial Optimization (ECCO XXI), 29-31 May, Dubrovnik, Croatia, pp. 48 (book of abstracts), 2008.
            • Παπαρρίζος Κ. και Σιφαλέρας Α., "Αλγόριθμοι Επιχειρησιακής Έρευνας και Εφαρμογές τους στις Ένοπλες Δυνάμεις", Διακλαδική Επιθεώρηση, Περιοδικό Ανώτατης Διακλαδικής Σχολής Πολέμου, Τεύχος 11, σελ. 90-99, 2008.
            • Παπαρρίζος Κ. και Σιφαλέρας Α., "Η Συνδυαστική Βελτιστοποίηση και η χρήση αυτής στη Μοντελοποίηση Στρατιωτικών Εφαρμογών", Διακλαδική Επιθεώρηση, Περιοδικό Ανώτατης Διακλαδικής Σχολής Πολέμου, Τεύχος 12, σελ. 51-62, 2008.

            2006

            • Paparrizos K., Samaras N. and Sifaleras A., "On the empirical behavior of a new network exterior point simplex algorithm for the minimum cost network flow problem", in Proc. of the Veszprem Optimization Conference: Advanced Algorithms (VOCAL 2006), 13-15 December, Veszprem, Hungary, pp. 66 (book of abstracts), 2006.
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