Browsing by Subject "Search engines"

Now showing items 1-19 of 19

    • Conference Object  

      Characterization and analysis of a web search benchmark 

      Hadjilambrou, Zacharias; Kleanthous, Marios M.; Sazeides, Yiannakis (Institute of Electrical and Electronics Engineers Inc., 2015)
      Web search as a service is very impressive. Web search runs on thousands of servers which perform search on an index of billions of web pages. The search results must be both relevant to the user queries and reach the user ...
    • Article  

      Characterizing crawler behavior from web server access logs 

      Dikaiakos, Marios D.; Stassopoulou, Athena; Papageorgiou, Loizos (2003)
      In this paper, we present a study of crawler behavior based on Web-server access logs. To this end, we use logs from five different academic sites in three countries. Based on these logs, we analyze the activity of different ...
    • Conference Object  

      Cultural journeys in the information society 

      Fakas, Georgios John; Kakas, Antonis C.; Dionisiou, D.; Dionisiou, M.; Kentonis, Achilleas; Pattichis, Constantinos S.; Pitsillides, Andreas; Schizas, Christos N. (IEEE, 2000)
      This paper describes the Cultural Journeys in the Information Society (CJIS) project. CJIS project is an INCO project (973324) funded by the ECC and its aims to address the problem of electronic information roads at various ...
    • Article  

      Design and implementation of a distributed crawler and filtering processor 

      Zeinalipour-Yazdi, Constantinos D.; Dikaiakos, Marios D. (2002)
      Web crawlers are the key component of services running on Internet and providing searching and indexing support for the entire Web, for corporate Intranets and large portal sites. More recently, crawlers have also been ...
    • Conference Object  

      Effective keyword search for software resources installed in large-scale Grid infrastructures 

      Pallis, George C.; Katsifodimos, A.; Dikaiakos, Marios D. (2009)
      In this paper, we investigate the problem of supporting keyword-based searching for the discovery of software resources that are installed on the nodes of largescale, federated Grid computing infrastructures. We address a ...
    • Article  

      The Electronic Road: Personalized Content Browsing 

      Wallace, M.; Karpouzis, K.; Stamou, G.; Moschovitis, G.; Kollias, S.; Schizas, Christos N. (2003)
      The effectiveness of a content browsing system, based on semantic content analysis, user profiling, and adaptation, is discussed. The various aspects of electronic road are also described. An user's navigation path through ...
    • Article  

      Information markets for product attributes: A game theoretic, dual pricing mechanism 

      Markopoulos, Panos M.; Aron, Ravi; Ungar, Lyle H. (2010)
      We model the availability of information about product attributes in Internet-based markets, focusing on a phenomenon that we term as information deficit (availability of less than perfect information about product attributes) ...
    • Article  

      An investigation of web crawler behavior: Characterization and metrics 

      Dikaiakos, Marios D.; Stassopoulou, Athena; Papageorgiou, Loizos (2005)
      In this paper, we present a characterization study of search-engine crawlers. For the purposes of our work, we use Web-server access logs from five academic sites in three different countries. Based on these logs, we analyze ...
    • Conference Object  

      IPMicra: An IP-address based location aware distributed web crawler 

      Papapetrou, Odysseas; Samaras, George S. (2004)
      Distributed crawling is able to overcome Important limitations of the traditional single-sourced web crawling systems. However, the optimal benefit of distributed crawling is usually limited to the sites hosting the crawlers, ...
    • Article  

      LMA-based motion retrieval for folk dance cultural heritage 

      Aristidou, Andreas; Stavrakis, E.; Chrysanthou, Yiorgos L. (2014)
      Motion capture (mocap) technology is an efficient method for digitizing art-performances, and it is becoming a popular method for the preservation and dissemination of dances. However, stylistic variations of human motion ...
    • Article  

      Minersoft: Software retrieval in grid and cloud computing infrastructures 

      Dikaiakos, Marios D.; Katsifodimos, A.; Pallis, George C. (2012)
      One of the main goals of Cloud and Grid infrastructures is to make their services easily accessible and attractive to end-users. In this article we investigate the problem of supporting keyword-based searching for the ...
    • Article  

      Mobile agents for World Wide Web distributed database access 

      Papastavrou, Stavros; Samaras, George S.; Pitoura, Evaggelia 1967- (2000)
      The popularity of the Web as a universal access mechanism for network information has created the need for developing web-based DBMS client/server applications. However, the current commercial applet-based approaches for ...
    • Article  

      A pragmatic and pervasive methodology to web service discovery 

      Tamani, E.; Evripidou, Paraskevas (2006)
      Service-Oriented computing can be characterized as the motivating force for interoperable web applications. Businesses that embark on service-oriented technology are inclined to an effective interoperation with other ...
    • Conference Object  

      A scalable hash-based mobile agent location mechanism 

      Kastidou, G.; Pitoura, Evaggelia 1967-; Samaras, George S. (Institute of Electrical and Electronics Engineers Inc., 2003)
      In this paper, we propose a novel mobile agent tracking mechanism based on hashing. To allow our system to adapt to variable workloads, dynamic rehashing is supported The proposed mechanism scales well with both the number ...
    • Article  

      Search Engines for the Grid: A Research Agenda 

      Dikaiakos, Marios D.; Ioannidis, Y.; Sakellariou, R. (2004)
      A preliminary study of the issues surrounding a seach engine for Grid environments, GRISEN, that would enable the provision of a variety of Grid information services, such as locating useful resources, learning about their ...
    • Conference Object  

      Towards user-centric social networks 

      Andreou, Panayiotis G.; Germanakos, Panagiotis; Konstantinidis, Andreas; Georgiadis, Dimosthenis; Belk, Marios; Samaras, George S. (2012)
      Social network portals, such as Facebook and Twitter, often discover and deliver relevant social data to a user's query, considering only system-oriented conflicting objectives (e.g., time, energy, recall) and frequently ...
    • Article  

      UCYMICRA: Distributed indexing of the web using migrating crawlers 

      Papapetrou, Odysseas; Papastavrou, Stavros; Samaras, George S. (2003)
      Due to the tremendous increase rate and the high change frequency of Web documents, maintaining an up-to-date index for searching purposes (search engines) is becoming a challenge. The traditional crawling methods are no ...
    • Conference Object  

      USN: An optimization framework for user-centric social networks 

      Andreou, Panayiotis G.; Germanakos, Panagiotis; Konstantinidis, Andreas; Georgiadis, Dimosthenis; Belk, Marios; Samaras, George S. (2012)
      Social network portals, such as Facebook and Twitter, often discover and deliver relevant social data to a user's query, considering only system-oriented conflicting objectives (e.g., time, energy, recall) and frequently ...
    • Article  

      Weighted boolean formula games 

      Mavronicolas, Marios; Monien, Burkhard; Wagner, K. W. (2007)
      We introduce a new class of succinct games, called weighted boolean formula games. Here, each player has a set of boolean formulas he wants to get satisfied. The boolean formulas of all players involve a ground set of ...