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  • Adaptive Offset Subspace Self-Organizing Map: An Application to Handwritten Digit Recognition 

    Zheng, Huicheng; Cunningham, Padraig; Tsymbal, Alexey (Trinity College Dublin, Department of Computer Science, 2006-06-23)
    An Adaptive-Subspace Self-Organizing Map (ASSOM) can learn a set of ordered linear subspaces which correspond to invariant classes. However the basic ASSOMcannot properly learn linear manifolds that are shifted away ...
  • Agent Mediated Collaborative Web Page Filtering 

    Green, Shaw; Cunningham, Padraig (Trinity College Dublin, Department of Computer Science, 1998-07)
    Intelligent filtering of multimedia documents such as World Wide Web (WWW) pages is an extremely difficult task to automate. However, the determination of a page?s relevance to one?s interests is a skill that comes ...
  • AI Structuralist Storytelling In Computer Games 

    Fairclough, Chris; Cunningham, Padraig (Trinity College Dublin, Department of Computer Science, 2004-10)
    This paper is a description of our work in creating a story director agent which utilises AI techniques. The story director controls the storyline in an adventure computer game, with the player controlling the hero ...
  • An Analysis of Case-Base Editing in a Spam Filtering System 

    Delany, Sarah Jane; Cunningham, Padraig (Trinity College Dublin, Department of Computer Science, 2004-08)
    Because of the volume of spam email and its evolving nature, any deployed Machine Learning-based spam filtering system will need to have procedures for case-base maintenance. Key to this will be procedures to edit ...
  • The Application of Case-Based Reasoning to Early Software Project Cost Estimation and Risk Assessment 

    Delany, Sarah Jane; Cunningham, Padraig (Trinity College Dublin, Department of Computer Science, 2000-02)
    In this paper we assess the applicability of case-based reasoning to the difficult problem of early software project cost estimation. We conclude that a comprehensive case representation is not available early in the ...
  • An Approach to Aggregating Ensembles of Lazy Learners that Supports Explanation 

    Zenobi, Gabriele; Cunningham, Padraig (Trinity College Dublin, Department of Computer Science, 2002-04)
    Ensemble research has shown that the aggregated output of an ensemble of predictors can be more accurate than a single predictor. This is true also for lazy learning systems like Case-Based Reasoning (CBR) and ...
  • An Assessment of Case-Based Reasoning for Spam Filtering 

    Delany, Sarah Jane; Cunningham, Padraig; Coyle, Lorcan (Trinity College Dublin, Department of Computer Science, 2004-11)
    Because of the changing nature of spam, a spam filtering system that uses machine learning will need to be dynamic. This suggests that a case-based (memory-based) approach may work well. Case-Based Reasoning (CBR) is a ...
  • Automated Case Generation for Recommender Systems Using Knowledge Discovery Techniques 

    Clerkin, Patrick; Hayes, Conor; Cunningham, Padraig (Trinity College Dublin, Department of Computer Science, 2002-04)
    One approach to product recommendation in ecommerce is collaborative filtering, which is based on data of users? consumption of assets. The alternative case-based approach is based on a more semantically rich representation ...
  • The Benefits of Using a Complete Probability Distribution when Decision Making: An Example in Anticoagulant Drug Therapy 

    Carney, Michael; Cunningham, Padraig (Trinity College Dublin, Department of Computer Science, 2005-08-06)
    In this paper we aim to show how probabilistic prediction of a continuous variable could be more beneficial to a medical practitioner than classification or numeric/point prediction of the same variable in many scenarios. ...
  • The Best Way to Instil Confidence is by Being Right An Evaluation of the Effectiveness of Case-Based Explanations in providing User Confidence 

    Nugent, Conor; Cunningham, Padraig; Doyle, Donal (Trinity College Dublin, Department of Computer Science, 2005-02-07)
    Instilling confidence in the abilities of machine learning systems in end-users is seen as critical to their success in real world problems. One way in which this can be achieved is by providing users with interpretable ...
  • Blame-Based Noise Reduction: An Alternative Perspective on Noise Reduction for Lazy Learning 

    Pasquier, Francois-Xavier; Delany, Sarah Jane; Cunningham, Padraig (Trinity College Dublin, Department of Computer Science, 2005-02-22)
    In this paper we present a new perspective on noise reduction for nearest-neighbour classifiers. Classic noise reduction algorithms such as Repeated Edited Nearest Neighbour remove cases from the training set if they are ...
  • Calibrating Probability Density Forecasts with Multi-objective Search 

    Carney, Michael; Cunningham, Padraig (Trinity College Dublin, Department of Computer Science, 2006-02-10)
    In this paper, we show that the optimization of density forecasting models for regression in machine learning can be formulated as a multi-objective problem.We describe the two objectives of sharpness and calibration and ...
  • Case Representation Issues for Case-Based Reasoning from Ensemble Research 

    Cunningham, Padraig; Zenobi, Gabriele (Trinity College Dublin, Department of Computer Science, 2001-03)
    Ensembles of classifiers will produce lower errors than the member classifiers if there is diversity in the ensemble. One means of producing this diversity in nearest neighbour classifiers is to base the member classifiers ...
  • A Case-Based Explanation System for `Black-Box? Systems 

    Nugent, Conor; Cunningham, Padraig (Trinity College Dublin, Department of Computer Science, 2004-06-23)
    Most users of machine-learning products are reluctant to use the systems without any sense of the underlying logic that has led to the system?s predictions. Unfortunately many of these systems lack any transparency in the ...
  • A Case-Based Personal Travel Assistant for Elaborating User Requirements and Assessing Offers 

    Coyle, Lorcan; Cunningham, Padraig; Hayes, Conor (Trinity College Dublin, Department of Computer Science, 2002-04)
    This paper describes a case-based approach to user profiling in a Personal Travel assistant (based on the 1998 FIPA Travel Scenario). The ap-proach is novel in that the user profile is made up of a set of cases capturing ...
  • Case-Based Plan Recognition in Computer Games 

    Fagan, Michael; Cunningham, Padraig (Trinity College Dublin, Department of Computer Science, 2003)
    In this paper we explore the use of case-based plan recognition to predict a player?s actions in a computer game. The game we work with is the classic Space Invaders game and we show that case-based plan recognition ...
  • Case-Based Reasoning in Scheduling: Reusing Solution Components 

    Cunningham, Padraig; Smyth, Barry (Trinity College Dublin, Department of Computer Science, 1996-08)
    In this paper we explore the reuse of components of known good schedules in new scheduling problems. This involves accumulating a case-base of good quality schedules, retrieving a case (or cases) similar to a new scheduling ...
  • A Case-Based Reasoning View of Automated Collaborative Filtering 

    Hayes, Conor; Cunningham, Padraig; Smyth, Barry (Trinity College Dublin, Department of Computer Science, 2001-03)
    From some perspectives Automated Collaborative Filtering (ACF) appears quite similar to Case-Based Reasoning (CBR). It works on data organised around users and assets that might be considered case descriptions. In addition, ...
  • A Case-Based Technique for Tracking Concept Drift in Spam Filtering 

    Delany, Sarah Jane; Cunningham, Padraig; Tsymbal, Alexey; Coyle, Lorcan (Trinity College Dublin, Department of Computer Science, 2004-08-17)
    Clearly, machine learning techiques can play an important role in filtering spam email because ample training data is available to build a robust classifier. However, spam filtering is a particularly challenging task as ...
  • Case-based User Profiling in a Personal Travel Assistant 

    Waszkiewicz, Pawel; Cunningham, Padraig (Trinity College Dublin, Department of Computer Science, 1999-03)
    [Introduction] In this paper we present an architecture for a Personal Travel Assistant (PTA). We focus on the ability of this PTA to elaborate a user?s travel requirements and evaluate offers. These decisions are based ...