Index Catalog // ScholarsArchive@OSU

Learning cost-sensitive diagnostic policies from data

Creator:: Zubek, Valentina Bayer
Abstract:: In its simplest form, the process of diagnosis is a decision-making process in which the diagnostician performs a sequence of tests culminating in a diagnostic decision. For example, a physician might perform a series of simple measurements (body tem- perature, weight, etc.) and laboratory measurements (white blood count, CT scan,...
Resource Type:: Dissertation
Full Text:: corrected_thesis.dvi AN ABSTRACT OF THE DISSERTATION OF Valentina

Complex patterns in gender HCI : a data mining study of factors leading to end-user debugging success for females and males

Creator:: Grigoreanu, Valentina I.
Abstract:: Most of the work so far in the subfield of Gender HCI has followed a theory-driven approach. Established theories, however, do not take into account specific issues that arise in end-user debugging. We suspected that there may be important information that we were overlooking. We therefore employed a methodology change:...
Resource Type:: Masters Thesis
Full Text:: OF THE THESIS OF Valentina Grigoreanu for the degree of Master of Science in Computer Science

Understanding and supporting end-user debugging strategies

Creator:: Grigoreanu, Valentina I.
Abstract:: End users' programs are fraught with errors, costing companies millions of dollars. One reason may be that researchers and tool designers have not yet focused on end-user debugging strategies. To investigate this possibility, this dissertation presents eight empirical studies and a new strategy-based end-user debugging tool for Excel, called StratCel....
Resource Type:: Dissertation
Full Text:: Valentina I. Grigoreanu for the degree of Doctor of Philosophy in Computer Science presented on December 1

AO* revisited

Creator:: Bayer-Zubek, Valentina and Dietterich, Thomas Glen
Abstract:: Preprint submitted to Elsevier Science 30 June 2004.
Resource Type:: Article
Full Text:: paper.dvi AO � Revisited Valentina Bayer Zubek �� Thomas G

Design implications for end-user debugging tools : a strategy-based view

Creator:: Grigoreanu, Valentina I., Burnett, Margaret, and Robertson, George
Abstract:: End-user programmers’ code (e.g., accountants’ spreadsheet formulas) is fraught with errors. To help mitigate this problem, end-user software engineering research is becoming established. However, most of this work has focused on feature usage, rather than debugging strategies. If a debugging tool were to support end-user programmers’ specific debugging strategy needs,...
Resource Type:: Technical Report
Full Text:: for End-User Debugging Tools: A Strategy-Based View Valentina Grigoreanu, Margaret Burnett

A strategy-centric approach to the design of end-user debugging tools

Creator:: Grigoreanu, Valentina I., Burnett, Margaret, and Robertson, George
Abstract:: End-user programmers’ code is notoriously buggy. This problem is amplified by the increasing complexity of end users’ programs. To help end users catch errors early and reliably, we employ a novel approach for the design of end-user debugging tools: a focus on supporting end users’ effective debugging strategies. This paper...
Resource Type:: Technical Report
Full Text:: Approach to the Design of End-User Debugging Tools Valentina Grigoreanu, Margaret Burnett Oregon

Learning diagnostic policies from examples by systematic search

Creator:: Oregon State University. Dept. of Computer Science and Zubek, Valentina Bayer
Abstract:: A diagnostic policy species what test to perform next based on the results of previous tests and when to stop and make a diagnosis. Cost-sensitive diagnostic policies perform tradeoffs between (a) the costs of tests and (b) the costs of misdiagnoses. An optimal diagnostic policy minimizes the expected total cost....
Resource Type:: Research Paper
Full Text:: Systematic Search Valentina Bayer�Zubek School of Electrical Engineering and Computer Science Oregon State

Integrating learning from examples into the search for diagnostic policies

Creator:: Oregon State University. Dept. of Computer Science, Bayer-Zubek, Valentina, and Dietterich, Thomas Glen
Abstract:: This paper studies the problem of learning diagnostic policies from training examples. A diagnostic policy is a complete description of the decision-making actions of a diagnostician (i.e., tests followed by a diagnostic decision) for all possible combinations of test results. An optimal diagnostic policy is one that minimizes the expected...
Resource Type:: Research Paper
Full Text:: ∗ Valentina Bayer-Zubek bayer@cs.orst.edu Thomas G. Dietterich tgd@cs.orst.edu School of Electrical

A POMDP approximation algorithm that anticipates the need to observe

Creator:: Oregon State University. Dept. of Computer Science, Bayer, Valentina, and Dietterich, Thomas Glen
Abstract:: This paper introduces the even-odd POMDP, an approximation to POMDPs in which the world is assumed to be fully observable every other time step. The even-odd POMDP can be converted into an equivalent MDP, the 2MDP, whose value function, V*[subscript 2MDP], can be combined online with a 2-step lookahead search...
Resource Type:: Research Paper
Full Text:: Observe Valentina Bayer bayer@cs.orst.edu Thomas Dietterich tgd@cs.orst.edu Department of Computer

A POMDP approximation algorithm that anticipates the need to observe

Creator:: Oregon State University. Dept. of Computer Science, Zubek, Valentina Bayer, and Dietterich, Thomas Glen
Abstract:: This paper introduces the even-odd POMDP an approximation to POMDPs Partially Observable Markov Decision Problems in which the world is assumed to be fully observable every other time step. This approximation works well for problems with a delayed need to observe. The even-odd POMDP can be converted into an equivalent...
Resource Type:: Research Paper
Full Text:: Need to Observe Valentina Bayer Zubek and Thomas Dietterich Department of Computer Science� Oregon

ScholarsArchive@OSU

Learning cost-sensitive diagnostic policies from data

Complex patterns in gender HCI : a data mining study of factors leading to end-user debugging success for females and males

Understanding and supporting end-user debugging strategies

AO* revisited

Design implications for end-user debugging tools : a strategy-based view

A strategy-centric approach to the design of end-user debugging tools

Learning diagnostic policies from examples by systematic search

Integrating learning from examples into the search for diagnostic policies

A POMDP approximation algorithm that anticipates the need to observe

A POMDP approximation algorithm that anticipates the need to observe

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