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  • Editorial : exploratory research in machine learning

    Creator:
    Dietterich, Thomas G.
    Abstract:
    Exploratory research contributes to the continued vitality of every discipline. The aim of exploratory research is to identify new tasks-tasks that cannot be solved by existing methods. Once a new task has been found, exploratory research seeks to develop a precise definition of the task and to understand the factors...
    Resource Type:
    Technical Report
    Full Text:
    Research in Machine Learning Thomas Dietterich Computer Science Department Oregon State University

  • Learning at the knowledge level

    Creator:
    Dietterich, Thomas G.
    Abstract:
    When Newell introduced the concept of the knowledge level as a useful level of description for computer systems, he focused on the representation of knowl­edge. This paper applies the knowledge level notion to the problem of knowl­edge acquisition. Two interesting issues arise. First, some existing machine learning programs appear to...
    Resource Type:
    Technical Report
    Full Text:
    Knowledge Level Thomas G. Dietterich Department of Computer Science Oregon State University Corvallis

  • A knowledge level analysis of learning programs

    Creator:
    Dietterich, Thomas G.
    Abstract:
    This chapter develops a taxonomy of learning methods using techniques based on Newell’s knowledge level. Two properties of each system are defined: knowl­edge level predictability and knowledge level learning. A system is predictable at the knowledge level if the principle of rationality can be applied to predict its behavior. A...
    Resource Type:
    Technical Report
    Full Text:
    ANALYSIS OF LEARNING PROGRAMS1 Thomas G. Dietterich Department of Computer Science Oregon State

  • Concept coverage and its application to two learning tasks

    Creator:
    Almuallim, Hussein Saleh
    Abstract:
    The coverage of a learning algorithm is the number of concepts that can be learned by that algorithm from samples of a given size for given accuracy and confidence parameters. This thesis begins by asking whether good learning algorithms can be designed by maximizing their coverage. There are three questions...
    Resource Type:
    Dissertation
    Full Text:
    Tasks Abstract approved Thomas G. Dietterich The coverage of a learning algorithm is the number of

  • Protein secondary structure prediction using conditional random fields and profiles

    Creator:
    Shen, Rongkun
    Abstract:
    Protein secondary structure prediction plays a pivotal role in predicting protein folding in three-dimensions. Its task is to assign each residue one of the three secondary structure classes helix, strand, or random coil. This is an instance of the problem of sequential supervised learning in machine learning. This thesis describes...
    Resource Type:
    Masters Thesis
    Full Text:
    Fields and Profiles Abstract approved: Thomas G. Dietterich

  • Evaluating online text classification algorithms for email prediction in TaskTracer

    Creator:
    Keiser, Victoria L.
    Abstract:
    This paper examines how six online multiclass text classification algorithms perform in the domain of email tagging within the TaskTracer system. TaskTracer is a project-oriented user interface for the desktop knowledge worker. TaskTracer attempts to tag all documents, web pages, and email messages with the projects to which they are...
    Resource Type:
    Masters Thesis
    Full Text:
    TaskTracer Abstract approved: Thomas G. Dietterich This paper examines how six online

  • Understanding and improving error-correcting output coding

    Creator:
    Kong, Eun Bae
    Abstract:
    Error-correcting output coding (ECOC) is a method for converting a k-classsupervised learning problem into a large number L of two-class supervised learningproblems and then combining the results of these L evaluations. Previous researchhas shown that ECOC can dramatically improve the classi cation accuracy of supervisedlearning algorithms that learn to classify...
    Resource Type:
    Dissertation
    Full Text:
    and Improving Error-Correcting Output Coding Abstract approved: Thomas G. Dietterich Error

  • Shrunken learning rates do not improve AdaBoost on benchmark datasets

    Creator:
    Forrest, Daniel L. K.
    Abstract:
    Recent work has shown that AdaBoost can be viewed as an algorithm that maximizes the margin on the training data via functional gradient descent. Under this interpretation, the weight computed by AdaBoost, for each hypothesis generated, can be viewed as a step size parameter in a gradient descent search. Friedman...
    Resource Type:
    Masters Thesis
    Full Text:
    Learning Rates Do Not Improve AdaBoost On Benchmark Datasets. Abstract approved: Thomas G. Dietterich

  • An implementation and initial test of generalized radial basis functions

    Creator:
    Wettschereck, Dietrich
    Abstract:
    Generalized Radial Basis Functions were used to construct networks that learn input-output mappings from given data. They are developed out of a theoretical framework for approximation based on regularization techniques and represent a class of three-layer networks similar to backpropagation networks with one hidden layer. A network using Gaussian base...
    Resource Type:
    Masters Thesis
    Full Text:
    Generalized Radial Basis Functions A,/ Redacted for Privacy Abstract approved: _ Thomas G. Dietterich

  • Image features and learning algorithms for biological, generic and social object recognition

    Creator:
    Zhang, Wei
    Abstract:
    Automated recognition of object categories in images is a critical step for many real-world computer vision applications. Interest region detectors and region descriptors have been widely employed to tackle the variability of objects in pose, scale, lighting, texture, color, and so on. Different types of object recognition problems usually require...
    Resource Type:
    Dissertation
    Full Text:
    : ______________________________________________________ Thomas G. Dietterich Automated recognition of object categories in images is a critical