Now showing items 1-20 of 389

    • Analysis of Data Mining Algorithms 

      Joshi, Karuna Pande (1997-03-30)
      A comparative study of algorithms used in Data Mining. This paper was written as part of the MS course work for Advanced Algorithms.
    • Communicating neural network knowledge between agents in a simulated aerial reconnaissance system 

      Quirolgico, Stephen; Canfield, Kip; Finin, Timothy; Smith, James A. (IEEE, 1999-10-03)
      In order to maintain their performance in a dynamic environment, agents may be required to modify their learning behavior during run-time. If an agent utilizes a rule-based system for learning, new rules may be easily ...
    • On Mining Web Access Logs 

      Joshi, Anupam; Joshi, Karuna; Krishnapuram, Raghu (1999-10-24)
      The proliferation of information on the world wide web has made the personalization of this information space a necessity. One possible approach to web personalization is to mine typical user profiles from the vast amount ...
    • Warehousing and Mining Web Logs 

      Joshi, Karuna P.; Joshi, Anupam; Yesha, Yelena; Krishnapuram, Raghu (ACM, 1999-11-02)
      Analyzing Web Logs for usage and access trends can not only provide important information to web site developers and administrators, but also help in creating adaptive web sites. While there are many existing tools that ...
    • Modeling the Dynamics of Using a Collaborative Hypertext 

      Chen, Chaomei; Rada, Roy (Walter de Gruyter GmbH, 2000-12-01)
      The dynamics of using a collaborative hypertext system is analyzed and modeled, based on time series data from the real users. First, we studied how users access a shared workspace simultaneously. Traditional time series ...
    • Organizational roles and communication modes in team work 

      Michailidis, Antonios; Rada, Roy (IEEE, 2001-01-06)
      We have surveyed ten collaborators' perceptions on the value of nine communication modes: email, telephone, pen-and-paper, computer conferencing, telephone conferencing, face-to-face, fax, post, and whiteboard. Eight roles ...
    • An overview of online trust: Concepts, elements, and implications 

      Wang, Ye Diana; Emurian, Henry H. (Elsevier Ltd., 2004-02-18)
      Lack of trust has been repeatedly identified as one of the most formidable barriers to people for engaging in e-commerce, involving transactions in which financial and personal information is submitted to merchants via the ...
    • The Aging of a Clinical Information System 

      Rada, Roy; Finley, Scott (Elsevier, 2004-07-30)
      The senescence of a clinical information system is more likely to have administrative than technical bases. Supporting this claim is a case study of one aging oncology information system. The case study is qualitative, as ...
    • How the Semantic Web is Being Used:An Analysis of FOAF Documents 

      Ding, Li; Zhou, Lina; Finin, Tim; Joshi, Anupam (2005-01-03)
      Semantic Web researchers have initially focused on the representation, development and use of ontologies but paid less attention to the social and structural relationships involved. The past year has seen a dramatic increase ...
    • DM-AMS: employing data mining techniques for alert management 

      Janeja, Vandana P.; Atluri, Vijayalakshmi; Gomaa, Ahmed; Adam, Nabil; Bornhoevd, Christof; Lin, Tao (Association for Computing Machinery, 2005-05)
      Alert management plays a critical role in many application domains including homeland security and natural disaster management, to allow timely and well-informed decisions. The major challenge faced by these systems is ...

      Murphy, Emma; McAllister, Graham; Strain, Philip; Kuber, Ravi; Yu, Wai (2005-07)
    • An Examination of Vote Verification Technologies: Findings and Experiences from the Maryland Study 

      Sherman, Alan T.; Gangopadhyay, Aryya; Holden, Stephen H.; Karabatis, George; Koru, A. Gunes; Law, Chris M.; Norris, Donald F.; Pinkston, John; Sears, Andrew; Zhang, Dongsong (2006-04-15)
      We describe our findings and experiences from our technical review of vote verification systems for the Maryland State Board of Elections (SBE). The review included the following four systems for possible use together ...
    • A Non-visual Approach to Improving Collaboration Between Blind and Sighted Internet Users 

      Kuber, Ravi; Yu, Wai; McAllister, Graham (Springer, Berlin, Heidelberg, 2007)
      Assistive technologies have widened access to the Web, by providing a non-visual representation of page content for blind individuals. However, restrictions imposed by screen readers and Braille output devices have led to ...
    • Towards developing assistive haptic feedback for visually impaired internet users 

      Kuber, Ravi; Yu, Wai; McAllister, Graham (Association for Computing Machinery, 2007-04)
      Haptic technologies are thought to have the potential to help blind individuals overcome the challenges experienced when accessing the Web. This paper proposes a structured participatory-based approach for developing ...
    • A grid-based extension to an assistive multimodal interface 

      Strain, Philip; McAllister, Graham; Murphy, Emma; Kuber, Ravi; Yu, Wai (Association for Computing Machinery, 2007-04)
      This paper describes an extension to a multimodal system designed to improve Internet accessibility for the visually impaired. Here we discuss the novel application of a grid (patent pending) to our assistive web interface. ...
    • Approach for Discovering and Handling Crisis in a Service-Oriented Environment 

      Adam, Nabil; Janeja, Vandana P.; Paliwal, Aabhas V.; Shafiq, Basit; Ulmer, Cedric; Gersabeck, Volker; Hardy, Anne; Bornhoevd, Christof; Schaper, Joachim (IEEE, 2007-06-25)
      In an emergency situation failure to respond in a timely manner poses a significant threat. Data needed for timely response comes from various sources and sensors. These individual data streams when viewed in isolation may ...
    • Spatiotemporal Neighborhood Discovery for Sensor Data 

      McGuire, Michael P.; Janeja, Vandana P.; Gangopadhyay, Aryya (Springer, Berlin, Heidelberg, 2008-01)
      The focus of this paper is the discovery of spatiotemporal neighborhoods in sensor datasets where a time series of data is collected at many spatial locations. The purpose of the spatiotemporal neighborhoods is to provide ...
    • Discretized Spatio-Temporal Scan Window 

      Mohammadi, Seyed H.; Janeja, Vandana P.; Gangopadhyay, Aryya (SIAM Publications, 2009)
      The focus of this paper is the discovery of anomalous spatio-temporal windows. We propose a Discretized Spatio-Temporal Scan Window approach to address the question of how we can treat Space and Time together without ...
    • Three Different Modes of Avatars as Virtual Lecturers in E-learning Interfaces: A Comparative Usability Study 

      Hamidi, Foad; Kapralos, Bill (Bentham Open, 2009-01-09)
      The generation of spatial audio and audio processing in general using traditional software-based methods and techniques is computationally prohibitive thereby limiting the number of, and type of auditory effects that can ...
    • A Framework for Relating Frontstage and Backstage Quality in Virtualized Services 

      Joshi, Karuna Pande; Joshi, Anupam; Yesha, Yelena; Kothari, Ravi (University of Maryland, Baltimore County, 2009-05-20)
      Virtualized service models are now emerging and redefining the way Information technology is delivered to end users. In this paper, we propose a framework to measure and track quality delivered by a Virtualized service ...