PinnedLinear Regression and Bayesian Inference: An Astrophysics PerspectiveI recently had the excellent experience of being a mentor at a machine learning + astrophysics summer school for undergraduate students at l’Université de Montréal (https://www.astro.umontreal.ca/astromatic/). As part of my duties (which were really a pleasure), I was asked to put together a hands-on example for students to learn about…Coding4 min readCoding4 min read
Published inThe Startup·PinnedA Gentle Introduction to Bayesian Inference using PyMC3: Detecting a Signal in Astronomical DataA very common question in astronomy is the following: is that blip I see in my data actually a detection of something or have I been staring at my screen for too long? This seemingly simple question can actually be a difficult one to answer using a Frequentist (i.e. not…Bayesian Statistics5 min readBayesian Statistics5 min read
Published inThe Startup·PinnedClassification in Astronomy: Galaxies vs QuasarsMachine Learning and Astronomy go together beautifully. Several astronomical problems involve solving large classification problems with a minimal amount of information. Today, we are going to explore an interesting problem: how to tell if an object is a galaxy or a quasar (an active galactic nucleus accreting an extreme amount…Astronomy4 min readAstronomy4 min read
Jun 2Using Machine Learning to Interpolate ValuesMachine learning is bursting with potential applications, but one important (and simple!) usage is using a machine learning algorithm for interpolation. In this post, I will demonstrate how a simple neural network can be used to interpolate on 1D or 2D grids. …Interpolation4 min readInterpolation4 min read
May 31Understanding Covid-19 Stay-At-Home Orders: A Machine Learning ApproachIn January 2020, the COVID-19 pandemic rocked the world by sending many countries across the globe into lockdown and curfews and instilling a general sense of fear of the viral infection in every neighborhood. While the repercussions of this event are still being felt in everyday life, we collectively have…Machine Learning4 min readMachine Learning4 min read
Published inThe Startup·Nov 14, 2020Astronomical Images for Machine Learning ApplicationsHubble Space Telescope The Hubble Space Telescope has revealed an enormous wealth of astronomical information over the past several decades. That being said, this article is not going to focus on the HST’s scientific prowess. Instead, I will describe how to query the Hubble Legacy Archive for use in statistical or machine learning…Hubble Space Telescope4 min readHubble Space Telescope4 min read
Published inThe Startup·Nov 1, 2020Another Principal Component Analysis Post: A simple python exampleThere are dozens (if not hundreds) of posts on the principal component analysis on Medium. So why have I decided to write another post on this topic? The answer is simple, I wanted to provide the community with a very simple explanation and example of the principal component analysis. This…Machine Learning2 min readMachine Learning2 min read
