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Classification of Stellar Spectra with LLE
Scott F. Daniel, Andrew J. Connolly, Jeff Schneider +2
We investigate the use of dimensionality reduction techniques for the classification of stellar spectra selected from the SDSS. Using local linear embedding (LLE), a technique that…
Interpolating Masked Weak Lensing Signal with Karhunen-Loeve Analysis
Jake Vanderplas, Andrew Connolly, Bhuvnesh Jain +1
We explore the utility of Karhunen Loeve (KL) analysis in solving practical problems in the analysis of gravitational shear surveys. Shear catalogs from large-field weak lensing su…
Tests of Modified Gravity with Dwarf Galaxies
Bhuvnesh Jain, Jake Vanderplas
In modified gravity theories that seek to explain cosmic acceleration, dwarf galaxies in low density environments can be subject to enhanced forces. The class of scalar-tensor theo…