Computer Science (PhD Theses): Recent submissions

Now showing items 81-100 of 298

    • Discovery of autonomous semantic services in mobile ad hoc networks 

      Nedos, Andronikos (Trinity College (Dublin, Ireland). School of Computer Science & Statistics, 2007)
      Mobile Ad Hoc Networks (MANETs) are dynamic networks in which mobile devices with wireless connnunication capabilities cooperate to provide spontaneous connectivity. In particular, a mobile ad hoc network can be considered ...

    • Perceptually guided authoring of image based representations 

      Morvan, Yann (Trinity College (Dublin, Ireland). School of Computer Science & Statistics, 2007)
      The creation of digital visual content has become a major activity in a broad range of industries. A huge quantity of labour is invested in related tasks, from modeling to de-noising of captured data. There has been ...

    • Realistic crowd animation : a perceptual approach 

      McDonnell, Rachel (Trinity College (Dublin, Ireland). School of Computer Science & Statistics, 2006)
      Real-time applications such as games or urban simulations arc often highly complex in nature. User expectations grow year by year, along with a concomitant desire for added realism. Due to the performance limitations of ...

    • Correlation-based stereoscopic disparity estimation with high-performance commodity hardware 

      McCullagh, Barry Joseph (Trinity College (Dublin, Ireland). School of Computer Science & Statistics, 2008)
      Stereoscopic depth reconstruction is the estimation of scene depth from at least two images of the scene taken at different viewpoints. The main computational problem is identification of matching pixels between the images. ...

    • Reducing overfitting in wrapper-based search 

      Loughrey, John (Trinity College (Dublin, Ireland). School of Computer Science & Statistics, 2006)
      The benefits of wrapper-based techniques for feature selection are well established. However, it is acknowledged that overfitting can occur in feature selection using the wrapper method when there is a limited amount of ...

    • Multiresolution liquid simulation and rendering 

      Lee, Richard (Trinity College (Dublin, Ireland). School of Computer Science & Statistics, 2008)
      Current approaches to real-time liquid simulation are based on solutions to the two-dimensional wave equation. In this thesis, we introduce a new, explicit solution method for the shallow water equations that achieves more ...

    • A policy based framework for real time charging in next generation networks 

      Lee, Brian (Trinity College (Dublin, Ireland). School of Computer Science & Statistics, 2005)
      The telecommunications landscape is undergoing a period of dramatic change. This change has been ongoing for a number of years and is driven by a combination of industry deregulation and technology advance. The net effect ...

    • Identifying and interpreting context on the Web : an application-driven approach 

      Kelleher, Daniel (Trinity College (Dublin, Ireland). School of Computer Science & Statistics, 2008)
      This work describes the use of contextual information in Web document processing. Contextual information is defined as the contents of a 'context set' of a document of interest on the Web. The context set of a document is ...

    • Saliency determination for computer graphics : an experimental approach 

      Howlett, Sarah (Trinity College (Dublin, Ireland). School of Computer Science & Statistics, 2006)
      In the computer graphics realm complex objects are abundant, but often need to be simplified in order to be displayed interactively. As the human visual system is far from flawless, advantage can be taken of its weaknesses ...

    • On coordination disambiguation in a generative parsing model, with memory-based techniques for parameter estimation. 

      Hogan, Deirdre (Trinity College (Dublin, Ireland). School of Computer Science & Statistics, 2007)
      This thesis is concerned with improving existing generative history-based probability models' treatment of noun phrase coordination and the development of memory based techniques for model parameter estimation. Lexicalised ...

    • Towards automatic and dynamic meta-object protocol composition in a compiled, reflective programming language 

      Haraszti, Péter (Trinity College (Dublin, Ireland). School of Computer Science & Statistics, 2005)
      This thesis describes a reflective programming model that provides a solution to the problem of automatic and dynamic metaobject composition in a compiled reflective prograrnming language, Iguana/C++. Meta-object protocols ...

    • Level of detail techniques for real-time urban simulation 

      Hamill, John (Trinity College (Dublin, Ireland). School of Computer Science & Statistics, 2005)
      Real-time urban simulation is an area of computer graphics with many applications, from city planning and emergency response to computer gaming. The task of creating and running a believable simulation of an urban area is ...

    • A state-of-the-art toolkit for document clustering 

      Greene, Derek (Trinity College (Dublin, Ireland). School of Computer Science & Statistics, 2007)
      Cluster analysis refers to a family of procedures which are fundamentally concerned with automatically arranging data into meaningful groups. These procedures are increasingly being employed in knowledge discovery tasks ...

    • Learning to annotate music files using content based retrieval systems and wavelet packet approximations of the input signals 

      Grimaldi, Marco (Trinity College (Dublin, Ireland). School of Computer Science & Statistics, 2005)
      This thesis presents an inter-disciplinary approach to the problem of music parametrisation for information representation and retrieval. Signal analysis and machine learning techniques are combined in the context of ...

    • Link quality prediction in mobile ad hoc networks 

      Gaertner, Gregor (Trinity College (Dublin, Ireland). School of Computer Science & Statistics, 2007)
      Link quality prediction (LQP) is effective in masking topology changes in wireless mobile ad hoc networks (MANETs) as previously shown in reducing packet latency in proactive routing. However, most existing LQP algorithms ...

    • Good reasons for noting bad grammar : empirical investigations into the parsing of ungrammatical written English 

      Foster, Jennifer (Trinity College (Dublin, Ireland). School of Computer Science & Statistics, 2005)
      This thesis is concerned with the parsing of ungrammatical written English sentences. Over a period of eighteen months, a 20,000 word corpus was developed which consists of ungrammatical sentences which were noticed ...

    • On the dynamic multiple intelligence informed personalization of the learning environment 

      Kelly, Declan (Trinity College (Dublin, Ireland). School of Computer Science & Statistics, 2006)
      Educational research informs us "one size does not fit all" (Reigeluth, 1996). It states that learners, reflecting individual traits, possess different learning characteristics, process and represent knowledge in different ...

    • A delay and disruption tolerant transport layer protocol 

      Farrell, Stephen (Trinity College (Dublin, Ireland). School of Computer Science & Statistics, 2008)
      The area of delay-tolerant networking (DTN) is concerned with highly challenged networks in which application layer "sessions" commonly lack contemporaneous end-toend connectivity. For example, efforts to create networks ...

    • Hybrid representations and perceptual metrics for scalable human simulation 

      Dobbyn, Simon (Trinity College (Dublin, Ireland). School of Computer Science & Statistics, 2006)
      The simulation of large crowds of humans is important in many fields of computer graphics, including real-time applications such as games, as they can breathe life into otherwise static scenes and enhance believability. ...

    • Methods for meaningful text representation and comparison 

      Devitt, Ann (Trinity College (Dublin, Ireland). School of Computer Science & Statistics, 2005)
      This thesis investigates methods of text representation and comparison using WordNet as a real world knowledge base. The research is carried out within the framework of lexical cohesive theory which defines the cohesive ...