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

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

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

At hackCooper 2016, we caused Isabella Berry to resolve those two issues with Github Dating Simulator, a credit card applicatoin that analyzes compatibility between Github users making use of graph concept in addition to energy of love. It is perhaps perhaps not just a dating simulator into the old-fashioned sense—rather, it is an internet application which allows people seeking hackathon groups to locate people who have comparable coding backgrounds in order to avoid the trouble of scrambling to get a group during the minute that is last.


Github Dating Simulator is available in two tastes. “Dating mode” permits a user to input two Github usernames to ascertain exactly just how appropriate these are generally. “Team generation mode” (the greater practical mode) allows a person to enter a list of Github usernames, will get back the perfect pairings for every associated with users. Moreover it enables them setting a few choices, such as for instance what number of individuals must certanly be contained in each group.

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

Only for enjoyable, in addition yields a summary of “first date ideas”, that are essentially arbitrarily created task some ideas in line with the languages that are common between each individual to simply help kickstart the ideation procedure. (so when it discovers really matches that are compatible moreover it outputs a summary of “first date places”—a.k.a. upcoming hackathons.)


I happened to be in charge of the UI design as well as the implementation that is technical this task. Probably one of the most projects that are statistically intensive labored on thus far, Github Dating Simulator depends on a mixture of the Github API and graph algorithms to effectively and accurately set users.

Pairing Algorithm

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

(this is certainly something which had been extremely contested, as you might choose to match people with an increase of experiences with particular development languages with individuals who have less experience for a far more experience that is educational. Perhaps an alternative for this kind of matching algorithm will be the next enhance.)

My notes and sketches for the UI design.

For a graph, each individual is plotted off their users with various paths of varying “lengths”. Each user is a node regarding the graph, and every course represents a typical language between two users. (If two users usually do not share any languages that are common they’ll not have paths between 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 quickest course (essentially, comparable experiences with specific languages) between two users. After that it aggregates all the paths between two users as a single “compatibility” metric centered on a logarithmic scale, after which starts producing matches beginning with the compatibility percentage that is highest. As soon as a person happens to be matched with another individual, it’s going to delete both users through the graph so they really cannot again be matched. The algorithm continues until all users have already been matched or there are no more available users to match.


Among the challenges that are major we went into had been that the Github API has price limiting, which prevents one from making way too many API demands in a offered period of time. To resolve this problem, we applied a pseudo-caching system with a PostgreSQL database. Utilizing the Github API’s conditional demand function, we just make the full demand to Github that the data at each location has been changed if they tell us. Otherwise, we merely rely on formerly kept data that it hasn’t changed since we know.

Presenting Github Dating Simulator at the expo that is judging.

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