Peter Mark Hastings

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This thesis presents an automatic, incremental lexical acquisition mechanism that uses the context of example sentences to guide inference of the meanings of unknown words. The goal of this line of research is to allow a Natural Language Processing NLP system to cope with words that it does not know | not just to gloss over them, but to try to infer what(More)
Research Methods Tutor (RMT) is a dialogue-based intelligent tutoring system for use in conjunction with undergraduate psychology research methods courses. RMT includes five topics that correspond to the curriculum of introductory research methods courses: ethics, variables, reliability, validity, and experimental design. We evaluated the effectiveness of(More)
The present study explored different approaches for automatically scoring student essays that were written on the basis of multiple texts. Specifically, these approaches were developed to classify whether or not important elements of the texts were present in the essays. The first was a simple pattern-matching approach called "multi-word" that allowed for(More)
This paper describes the design of a game which is aimed at teaching argumentation skills to college students. Ability to understand and generate arguments is critical for STEM and a broad range of other fields, but it is sorely lacking in students today. Building on our prior experience creating intelligent tutoring systems for teaching argumen-tation(More)
Research Methods Tutor (RMT) is a dialog-based intelligent tutoring system designed for use in conjunction with courses in psychology research methods. The current RMT system includes five topic sections: ethics, variables, reliability, validity, and experimental design. The tutor can be used in an " agent mode, " which utilizes synthesized speech and an(More)
Integral-field spectroscopy is the most effective method of exploiting the superb image quality of the ESO–VLT, allowing complex astrophysical processes to be probed on the angular scales currently accessible only for imaging data, but with the addition of information in the spectral dimension. We discuss science drivers and requirements for multiple(More)
This article describes several approaches to assessing student understanding using written explanations that students generate as part of a multiple-document inquiry activity on a scientific topic (global warming). The current work attempts to capture the causal structure of student explanations as a way to detect the quality of the students’ mental models(More)
Consider the assignment that teachers have been giving their students for years: " Write an expository essay on a scientific topic. Example topics may include global warming, human memory, or the spread of infectious diseases. You must have at least three references. " The instructor makes it clear that the paper should have a thesis or claim that is(More)
August 2001 – Present Taught courses in computer science, human-computer interaction, and introductory statistics. Major research projects involve intelligent tutoring for research methods and natural language processing.