Github Dating Simulator college pupil, finding love could be difficult. Similarly, findi

Github Dating Simulator college pupil, finding love could be difficult. Similarly, findi

As being a school that is high, finding love could be difficult. Similarly, finding people happy to invest their week-end teaming up beside me at a hackathon may be hard as well.

An application that analyzes compatibility between Github users by using graph theory and the power of love at hackCooper 2016, I worked with Isabella Berry to solve these two problems with Github Dating Simulator. It is maybe not really a dating simulator into the old-fashioned sense—rather , it is a internet application which allows people in search of hackathon groups discover individuals with comparable coding backgrounds in order to avoid the effort of scrambling to get a group in the minute that is last.


Github Dating Simulator will come in two tastes. “Dating mode” permits a user to input two Github usernames to find out exactly exactly how suitable they truly are. “Team generation mode” (the greater practical mode) permits a person to enter a list of Github usernames, will get back the perfect pairings for every single associated with users. Moreover it permits them setting a few options, such as for instance just how many people must certanly be a part of each group.

For every single match that Github Dating Simulator analyzes, it outputs a “compatibility” percentage, that is fundamentally the program’s confidence level why these two different people should be able to interact well.

Simply for enjoyable, moreover it creates a summary of “first date ideas”, that are essentially arbitrarily generated task tips in line with the typical languages provided between each individual to simply help kickstart the ideation procedure. (as soon as it discovers really appropriate matches, in addition outputs a listing of “first date areas”—a.k.a. upcoming hackathons.)


I happened to be accountable for the UI design additionally the implementation that is technical this task. One of the most statistically intensive jobs I’ve labored on up to now, Github Dating Simulator depends on a variety of the Github API and graph algorithms to effortlessly and accurately set users.

Pairing Algorithm

To produce matchings, it appears to be during the language use of each individual and compares it for a level that is experience-based those associated with the other users. Which means someone who possesses lot of repositories printed in Ruby will undoubtedly be marked as an “expert” while an individual who just has only written 70 lines of Ruby will undoubtedly be marked as being a “beginner”. This permits users become matched along with other coders proportional with their level of skill, allowing programmers to utilize individuals of comparable coding backgrounds, making for a much simpler hackathon experience overall.

(this really is a thing that had been extremely contested, as you might choose to match people with an increase of experiences with particular development languages with those people who have less experience for a far more academic experience. Maybe an alternative for this kind of matching algorithm comes into play the next enhance.)

My records and sketches for the UI design.

For a graph, each individual is plotted off their users with various paths of varying “lengths”. Each individual is really a node in the graph, and every course represents a common language between two users. (If two users don’t share any typical languages, they’ll not have paths among them.) Path length is determined because of the mean square distinction of each and every of the languages a person understands.

The algorithm attempts to discover the path that is shortest (essentially, comparable experiences with particular languages) between two users. After that it aggregates most of the paths between two users right into a single “compatibility” metric according to a logarithmic scale, after which starts producing matches beginning the compatibility percentage that is highest. When a user happens to be matched with another individual, it’ll delete both users through the graph so that they cannot be matched once again. The algorithm continues until all users have already been matched or there aren’t any more available users to match.


One of many challenges that are major we went into ended up being that the Github API has price restricting, which stops one from making a lot of API needs in a provided period of time. To fix this nagging issue, we applied a pseudo-caching mechanism with a PostgreSQL database. Making use of the Github API’s conditional demand function, we just make the full demand to Github when they inform us that the information at each and every location happens to be changed. Otherwise, we medepend depend on formerly kept data since we understand so it hasn’t changed.

Presenting Github Dating Simulator at the judging expo.

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