Now showing items 181-200 of 1952

    • Conference Object  

      Don’t Correct the Tags in a Cache, Just Check Their Hamming Distance from the Lookup Tag 

      Gendler, Alex; Bramnik, Arkady; Szapiro, Ariel; Sazeides, Yiannakis (2018)
      This paper describes the design of an efficient technique for correcting errors in the tag array of set-associative caches. The main idea behind this scheme is that for a cache tag array protected with ECC code, the stored ...
    • Article  

      Comprehensive Characterization of an Open Source Document Search Engine 

      Hadjilambrou, Zacharias; Kleanthous, Marios; Antoniou, Georgia; Portero, Antoni; Sazeides, Yiannakis (2019)
      This work performs a thorough characterization and analysis of the open source Lucene search library. The article describes in detail the architecture, functionality, and micro-architectural behavior of the search engine, ...
    • Article  

      A Decentralized Approach for Self-Coexistence Among Heterogeneous Networks in TVWS 

      Maloku, Hëna; Hamiti, Enver; Fazliu, Zana Limani; Lesta, Vicky Papadopoulou; Pitsillides, Andreas; Rajarajan, Muttukrishnan (2018)
      This paper focuses on coexistence and self-coexistence challenges between secondary heterogeneous wireless networks/users sharing TV Whitespace spectrum. The coexistence problems arise from having several primary and ...
    • Conference Object  

      Experiences and future perspectives – how the EIT Community can assist in enhancing innovation capacity in Cyprus? 

      Keravnou-Papailiou, Elpida (European Institute of Innovation and Technology, 2019)
    • Conference Object  

      Measuring and Exploiting Guardbands of Server-Grade ARMv8 CPU Cores and DRAMs 

      Tovletoglou, Konstantinos; Mukhanov, Lev; Karakonstantis, Georgios; Chatzidimitriou, Athanasios; Papadimitriou, George; Kaliorakis, Manolis; Gizopoulos, Dimitris; Hadjilambrou, Zacharias; Sazeides, Yiannakis; Lampropulos, Alejandro; Das, Shidhartha; Vo, Phong (2018)
      In this paper, we present the results of our comprehensive measurement study of the timing and voltage guardbands in memories and cores of a commodity ARMv8 based micro-server. Using various synthetic micro-benchmarks, we ...
    • Conference Object  

      Decaying Telco Big Data with Data Postdiction 

      Costa, Constantinos; Charalampous, Andreas; Konstantinidis, Andreas; Zeinalipour-Yazti, Demetrios; Mokbel, Mohamed F. (2018)
      In this paper, we present a novel decaying operator for Telco Big Data (TBD), coined TBD-DP (Data Postdiction). Unlike data prediction, which aims to make a statement about the future value of some tuple, our formulated ...
    • Article  

      Self-similarity Analysis for Motion Capture Cleaning 

      Aristidou, Andreas; Cohen‐Or, D.; Hodgins, J. K.; Shamir, A. (2018)
      Motion capture sequences may contain erroneous data, especially when the motion is complex or performers are interacting closely and occlusions are frequent. Common practice is to have specialists visually detect the ...
    • Conference Object  

      Panthera: holistic memory management for big data processing over hybrid memories 

      Wang, Chenxi; Cui, Huimin; Cao, Ting; Zigman, John; Volos, Haris; Mutlu, Onur; Lv, Fang; Feng, Xiaobing; Xu, Guoqing Harry (Association for Computing Machinery, 2019)
      Modern data-parallel systems such as Spark rely increasingly on in-memory computing that can significantly improve the efficiency of iterative algorithms. To process real-world datasets, modern data-parallel systems often ...
    • Article  

      Conditional Value-at-Risk: Structure and complexity of equilibria 

      Mavronicolas, Marios; Monien, Burkhard (2020)
      Conditional Value-at-Risk, denoted as CVaRα, is becoming the prevailing measure of risk over two paramount economic domains: the insurance domain and the financial domain
    • Article  

      Security Agent Location in the Internet of Things 

      Ioannou, Christiana; Vassiliou, Vasos (2019)
      The Internet of Things (IoT) provides the ability to extend the Internet into devices and everyday objects, in a way that they are uniquely addressable. Sensors, actuators, as well as everyday devices and objects, such as ...
    • Article  

      MANDOLA: A Big-Data Processing and Visualization Platform for Monitoring and Detecting Online Hate Speech 

      Paschalides, Demetris; Stephanidis, Dimosthenis; Andreou, Andreas; Orphanou, Kalia; Pallis, George; Dikaiakos, Marios D.; Markatos, Evangelos (2020)
      In recent years, the increasing propagation of hate speech in online social networks and the need for effective counter-measures have drawn significant investment from social network companies and researchers. This has ...
    • Article  

      Inverse Kinematics Techniques in Computer Graphics: A Survey 

      Aristidou, A.; Lasenby, J.; Chrysanthou, Yiorgos; Shamir, A. (2018)
      Inverse kinematics (IK) is the use of kinematic equations to determine the joint parameters of a manipulator so that the end effector moves to a desired position
    • Conference Object  

      Why did the human cross the road? 

      Charalambous, Panayiotis; Chrysanthou, Yiorgos (Association for Computing Machinery, 2019)
      ‘‘Humans at rest tend to stay at rest. Humans in motion tend to cross the road – Isaac Newton.” Even though this response is meant to be a joke to indicate the answer is quite obvious, this important feature of real world ...
    • Conference Object  

      Automatic Environment Map Registration 

      Larvy, Ulysse; Loscos, Céline; Chrysanthou, Yiorgos (Eurographics, 2019)
      In this paper, a method to automatically register an environment map (EM) around a local scene is presented. In the literature, this step is most of the time manually processed by a user. However, it is an essential step ...
    • Conference Object  

      StreamSight: A Query-Driven Framework for Streaming Analytics in Edge Computing 

      Georgiou, Zacharias; Symeonides, Moysis; Trihinas, Demetris; Pallis, George; Dikaiakos, Marios D. (2018)
      Edge computing is the emerging architectural paradigm extending cloud technologies to the logical extremes of the network for on-demand and delay-sensitive services. However, once service placement on edge-enabling resources ...
    • Article  

      Digital Dance Ethnography: Organizing Large Dance Collections 

      Aristidou, Andreas; Shamir, Ariel; Chrysanthou, Yiorgos (2019)
      Folk dances often reflect the socio-cultural influences prevailing in different periods and nations
    • Article  

      Real-time 3D human pose and motion reconstruction from monocular RGB videos 

      Yiannakides, Anastasios; Aristidou, Andreas; Chrysanthou, Yiorgos (2019)
      Real-time three-dimensional (3D) pose estimation is of high interest in interactive applications, virtual reality, activity recognition, and most importantly, in the growing gaming industry. In this work, we present a ...
    • Book Chapter  

      NP-hardness of equilibria in case of risk-averse players 

      Mavronicolas, Marios; Monien, Burkhard (Springer International Publishing, 2018)
      We study the complexity of deciding the existence of mixed equilibria for minimization games where players use valuations other than expectation to evaluate their costs. We consider risk-averse players seeking to minimize ...
    • Conference Object  

      Convolutional Neural Networks in Combination with Support Vector Machines for Complex Sequential Data Classification 

      Dionysiou, Antreas; Agathocleous, Michalis; Christodoulou, Chris; Promponas, Vasilis (Springer International Publishing, 2018)
      Trying to extract features from complex sequential data for classification and prediction problems is an extremely difficult task. Deep Machine Learning techniques, such as Convolutional Neural Networks (CNNs), have been ...
    • Conference Object  

      SELECT: A Distributed Publish/Subscribe Notification System for Online Social Networks 

      Apolónia, Nuno; Antaris, Stefanos; Girdzijauskas, Sarunas; Pallis, George; Dikaiakos, Marios (2018)
      Publish/subscribe (pub/sub) mechanisms constitute an attractive communication paradigm in the design of large-scale notification systems for Online Social Networks (OSNs). To accommodate the large-scale workloads of ...