Now showing items 1-20 of 22

  • Biological-inspired algorithms for dynamic search in web graphs 

    Kouzas, G.; Anagnostopoulos, I. (2011)
    We propose a biological-inspired algorithmic procedure for improving the precision level in respect to a web user's query. This algorithm is capable of tracing relevant information in web graphs, imitating the mission of ...
  • A comparable study employing weka clustering/classification algorithms for web page classification 

    Charalampopoulos, I.; Anagnostopoulos, I. (2011)
    Documents and web pages share many similarities. Thus classification methods used in documents can be applied to advanced web content, with or even without modifications. Algorithms for document and web classification are ...
  • A comparison over focused web crawling strategies 

    Avraam, I.; Anagnostopoulos, I. (2011)
    In this paper we review and compare focused crawling strategies, studied and published during the past decade. Despite giant leaps in communication, storage and computing power in recent years, crawlers have always struggled ...
  • Editorial on "QoS and service provisioning for integrated wireless networks" 

    Anagnostopoulos, I.; Tinnirello, I.; Douligeris, C. (2011)
  • Exploratory analysis of a terabyte scale web corpus 

    Kolias, V.; Anagnostopoulos, I.; Kayafas, E. (2014)
    In this paper we present a preliminary analysis over the largest publicly accessible web dataset: The Common Crawl Corpus. We measure nine web characteristics from two levels of granularity using MapReduce and we comment ...
  • Fair TDMA scheduling in wireless multihop networks 

    Vergados, D. J.; Sgora, A.; Vergados, D. D.; Vouyioukas, D.; Anagnostopoulos, I. (2012)
    In wireless multihop networks, communication between two end-nodes is carried out by hopping over multiple wireless links. However, the fact that each node has to transmit not only its own traffic, but also traffic on ...
  • InfluenceTracker: Rating the impact of a twitter account 

    Razis, G.; Anagnostopoulos, I. (2014)
    This paper describes a methodology for rating the influence of a Twitter account in this famous microblogging service. Then it is evaluated over real accounts, under the belief that influence is not only a matter of quantity ...
  • Interconnecting distributed virtual worlds using Metabots: Performance evaluation against the traditional client-server model 

    Kotsilieris, T.; Karetsos, G. T.; Anagnostopoulos, I.; Dimopoulou, N. A. (2014)
    Virtual Worlds evolution is breaking the barriers of virtual isolation, thus allowing users to participate in geographically dispersed and culturally diverse places. At the same time, mobile agents have been established ...
  • Lifespan and propagation of information in On-line Social Networks: A case study based on Reddit 

    Haralabopoulos, G.; Anagnostopoulos, I.; Zeadally, S. (2015)
    Since 1950, information flows have been in the center of scientific research. Up until the Internet penetration in the late 1990s, these information flow studies were based on traditional offline social networks. From the ...
  • A methodology for internal Web ethics 

    Vafopoulos, M.; Stefaneas, P.; Anagnostopoulos, I.; O'Hara, K. (2012)
    The vigorous impact of the Web in time and space arises from the fact that it motivates massive creation, editing and distribution of information by Users with little knowledge. This unprecedented continuum provides novel ...
  • A personalized audio server using MPEG-7 and MPEG-21 standards 

    Skondras, E.; Michalas, A.; Louta, M.; Anagnostopoulos, I. (2010)
    This paper presents a semantic model which delivers personalized audio information. The personalization process is automated and decentralized. The metadata which support personalization are separated in two categories: ...
  • THE PREVALENCE OF OSTEOARTHRITIS IN CENTRAL GREECE 

    Anagnostopoulos, I.; Zintzaras, E.; Alexiou, I.; Koutroumpas, A.; Papathanasiou, A.; Barouta, G.; Sakkas, L. (2009)
  • The prevalence of rheumatic diseases in central Greece: a population survey 

    Anagnostopoulos, I.; Zinzaras, E.; Alexiou, I.; Papathanasiou, A. A.; Davas, E.; Koutroumpas, A.; Barouta, G.; Sakkas, L. I. (2010)
    Background: Rheumatic diseases are a major health and financial burden for societies. The prevalence of rheumatic diseases may change over time, and therefore, we sought to estimate the prevalence of rheumatic diseases in ...
  • Query expansion with a little help from twitter 

    Anagnostopoulos, I.; Razis, G.; Mylonas, P.; Anagnostopoulos, C. N. (2013)
    With the advent and rapid spread of microblogging services, web information management finds a new research topic. Although classical information retrieval methods and techniques help search engines and services to present ...
  • Real time enhanced random sampling of online social networks 

    Haralabopoulos, G.; Anagnostopoulos, I. (2014)
    Social graphs can be easily extracted from Online Social Networks (OSNs). However, as the size and evolution of this kind of networks increases over time, conventional sampling methods used to evaluate large graph information ...
  • RuleMR: Classification rule discovery with MapReduce 

    Kolias, V.; Kolias, C.; Anagnostopoulos, I.; Kayafas, E. (2014)
    The vast amounts of data generated, exchanged and consumed on a daily basis by contemporary networks and devices renders their analysis a cumbersome procedure with inherent difficulties. On the one hand, the need for ...
  • Semantic query suggestion using Twitter Entities 

    Anagnostopoulos, I.; Razis, G.; Mylonas, P.; Anagnostopoulos, C. N. (2015)
    There are many web information management methods and techniques that help search engines and news services to provide useful suggestions with respect to queries, thus facilitating the users' search. However, the penetration ...
  • Semantifying twitter: The influence tracker ontology 

    Razis, G.; Anagnostopoulos, I. (2014)
    In this paper, we propose an ontology schema towards semantification provision of Twitter social analytics. The ontology is deployed over a publicly available service that measures how influential a Twitter account is, by ...
  • Social networking and on-line communities: Classification and research trends 

    Ioannidou, M.; Raptotasiou, E.; Anagnostopoulos, I. (2011)
    We investigate the birth and evolution of the on-line social networks research field as it is outlined in several recent works published within the last four years. Our goal is to present how this particular subject attracts ...
  • Socio-semantic query expansion using Twitter hashtags 

    Anagnostopoulos, I.; Kolias, V.; Mylonas, P. (2012)
    In this paper we introduce an algorithmic approach, capable of creating a semantic network with concatenated terms and phrases (hashtags) from collectively postings on the Twittersphere. This network could be exploited for ...