509 research outputs found

    A vehicle classification algorithm based on telematics data

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    Thesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2018.This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.Cataloged from student-submitted PDF version of thesis.Includes bibliographical references (pages 45-46).In the thesis, I develop an algorithm to identify the vehicle model from telematics data. By extracting the features from the accelerometer and GPS data, we obtain the classification features, which then goes through a multiclass random forest classifier. We apply this results into problems of driver and vehicle identification. The result shows that, while the algorithm could identify the vehicle models to some extent, the dominating signal comes from driving style, and an approach running purely unsupervised learning is harder to achieve good classification results compared to supervised methods.by Linh Vuong Nguyen.M. Eng

    Random matrices and random boxes

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    This thesis concerns two questions on random structures: the semi-circular law for adjacency matrix of regular random graph and the piercing number for random boxes. Random matrices: We proved in full generality the semi-circular law for random d-regular graph model in the case d tends to infinity as n does. Our result complements the McKay law [19], which applied for the case d is an absolute constant. Random boxes. Take n random boxes with axis-parallel edges inside the unit cube [0; 1][superscript]d, the piercing number is the minimum number of points needed to pierce all boxes. Using hypergraph setting, we was able to prove a near sharp estimation for the piercing number. This thesis is based on two papers by the author [31] and [30] (joint work with Van Vu and Ke Wang).Ph.D.Includes bibliographical referencesIncludes vitaby Linh V. Tra

    Interview with Mai-Linh Hong

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    Mai-Linh Hong is a Vietnamese American woman, she was born in Vietnam and grew up near Washington D.C. Hong is an author, editor, and Assistant Professor of Literature at UC Merced. Prior to joining the Auntie Sewing Squad, she ran an Etsy shop and its proceeds went to anti-racist and feminist organizations. As an Auntie, she actively donates masks but is also currently co-editing the Auntie Sewing Squad’s new book.https://digitalcommons.csumb.edu/auntiesewing_interviews/1040/thumbnail.jp

    Supplemental Material - Development of minimum reporting sets of patient characteristics in epidemiological research: A methodological systematic review

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    Supplemental Material for Development of minimum reporting sets of patient characteristics in epidemiological research: A methodological systematic review by My Luong Vuong, Pham Hien Trang Tu, Khanh Linh Duong and Tat-Thang Vo in Research Methods in Medicine & Health Sciences</p

    Supplemental Material - Development of minimum reporting sets of patient characteristics in epidemiological research: A methodological systematic review

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    Supplemental Material for Development of minimum reporting sets of patient characteristics in epidemiological research: A methodological systematic review by My Luong Vuong, Pham Hien Trang Tu, Khanh Linh Duong and Tat-Thang Vo in Research Methods in Medicine & Health Sciences</p

    Supplemental Material - Development of minimum reporting sets of patient characteristics in epidemiological research: A methodological systematic review

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    Supplemental Material for Development of minimum reporting sets of patient characteristics in epidemiological research: A methodological systematic review by My Luong Vuong, Pham Hien Trang Tu, Khanh Linh Duong and Tat-Thang Vo in Research Methods in Medicine & Health Sciences</p

    Supplemental Material - Development of minimum reporting sets of patient characteristics in epidemiological research: A methodological systematic review

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    Supplemental Material for Development of minimum reporting sets of patient characteristics in epidemiological research: A methodological systematic review by My Luong Vuong, Pham Hien Trang Tu, Khanh Linh Duong and Tat-Thang Vo in Research Methods in Medicine & Health Sciences</p

    Supplemental Material - Development of minimum reporting sets of patient characteristics in epidemiological research: A methodological systematic review

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    Supplemental Material for Development of minimum reporting sets of patient characteristics in epidemiological research: A methodological systematic review by My Luong Vuong, Pham Hien Trang Tu, Khanh Linh Duong and Tat-Thang Vo in Research Methods in Medicine & Health Sciences</p
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