T.J. Gaffney

Contract processing I did some side work on a project which attempted to automatically process contracts. For my part, I scraped the FCC EDGAR database to find contracts to be used by human and machine labelers.Data scrapingBig data

Sports betting market sizing I conducted surveys and matched to Census data to model demand. I used this in a gravity model to estimate market size of sports betting in states that were considering legalizing.ModelingModelingData scrapingRegression

ICD-9 to ICD-10 migration Wrote a web scraper to get a ICD-9 to ICD-10 crosswalk.SQL / DatabaseData scraping

Project Titan is a set of software I wrote to make predictions for sports. This is a large project with web scraping, modeling, and architecture components. See linked doc for way more details.

ProgrammingMarkov ChainWorkflow ManagerRegressionDesign / ArchPageRankStatsData scrapingAgile developmentModelingSQL / Database

This is a now-defunct website I’ve made to track predictions made for NHL games, by experts on the internet.

The front-end is built with Angular, which uses a PHP handler to access the MySQL database, which gets populated with a library of Python scrapers.

Note: The linked codebase is not very well documented. This was initially intended to be private.

Data scrapingAgile developmentPHPSQL / DatabaseDesign / ArchNetworking (CS)BayesFront-end

There's a subreddit where people ask for high-risk, high-yield, short-term loans, and various lenders fulfill these loans. My friend and I tried to make money doing this, by underwriting users based on their borrowing and user history. We scraped a ton of data from the site, modeled on this, and set up a service to notify us of good risk to lend to.

ModelingData scrapingRandom ForestProgramming

Over the years, I've used March Madness as a playground for some of my ideas on how to model two teams who have never played each other but have shared opponents or opponents of opponents.

ModelingData scrapingMonte CarloGenetic AlgorithmQuadratic ProgrammingProgrammingMarkov Chain

I had a friend in grad school who used to look for collectibles on eBay to buy and resell on Amazon at a higher price. Since fewer people shopped on eBay, sometimes there we price differences. Inspired by this, I got a list of movie UPCs and wrote a script that searched these on both sites, and notified me of descrepancies. For a while I made some money, but this was lost to a couple of purchases that weren't as advertised. I abandonned the pursuit.

Data scraping