Browsing RPI Theses Open Access by Author "Magdon-Ismail, Malik"
Now showing items 21-27 of 27
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Simultaneous orbit fitting of stellar streams: constraining the galactic dark matter halo
Willett, Benjamin Arthur (Rensselaer Polytechnic Institute, Troy, NY, 2010-12) -
Topics in matrix approximation
Nambirajan, Srinivas (Rensselaer Polytechnic Institute, Troy, NY, 2015-12)A fundamental need in computational linear algebra is computing with matrices quickly but approximately. This is commonly achieved by approximating matrices, either deterministically or randomly such that the structure in ... -
Understanding prominence on massive and anonymous social news sites
Kimball, Dan (Rensselaer Polytechnic Institute, Troy, NY, 2013-05)Many algorithms have been proposed to measure prominence of individuals in social networks. However, these algorithms are highly dependent on the underlying mechanisms for judging how individuals gain prominence in a given ... -
Unsupervised learning : evaluation, distributed setting, and privacy
Tsikhanovich, Maksim (Rensselaer Polytechnic Institute, Troy, NY, 2018-05)Chapter 1 is an overview of topic modeling as a set of unsupervised learning tasks. We present the Latent Dirichlet Allocation (LDA) model, and show how k-means as well as non- negative matrix factorization (NMF) can also ... -
Unweaving the tangled web : using BHB stars to trace tidal streams in the Galactic halo
Amy, Paul M. (Rensselaer Polytechnic Institute, Troy, NY, 2019-08)Mapping and analyzing substructure in the halo of the Milky Way is our primary way of investigating the morphology and composition of the Milky Way's dark matter halo, the Galaxy's accretion history, and ultimately, models ... -
Using Milkyway@home to measure the mass of the orphan-chenab stream progenitor dwarf galaxy
Mendelsohn, Eric J. (Rensselaer Polytechnic Institute, Troy, NY, 2022-08)We fit the mass and radial profile of the Orphan-Chenab Stream's (OCS) dwarf galaxy progenitor by using turnoff stars in the Sloan Digital Sky Survey (SDSS) and the Dark Energy Camera (DEC) to constrain N-body simulations ... -
Virtual learning and planning toward autonomous object manipulation
Dong, Jun (Rensselaer Polytechnic Institute, Troy, NY, 2018-08)Another contribution of the dissertation is our virtual learning from demonstration system, which helps robots learn task knowledge and perform informed motion planning. Successful task motions are demonstrated using human ...