Turns out machine learning is a champ at fixing buggy code

It can fix 10 times as many errors as other systems can, MIT says

Here's yet another new application of machine learning:  MIT has developed a system for fixing errors in bug-riddled code.

The new machine-learning system developed by researchers at MIT can fix roughly 10 times as many errors as its predecessors could, the researchers say. They presented a paper describing the new system, dubbed "Prophet," at the Principles of Programming Languages symposium last month.

Essentially, the system works by studying patches already made to open-source computer programs in the past in order to learn their general properties. Prophet was given 777 errors and fixes in eight common open-source applications stored in the online repository GitHub.

The system then applies that knowledge to produce new repairs for new bugs in a different set of programs.

Fan Long, a graduate student in electrical engineering and computer science who was co-author on the paper, had actually already developed an algorithm that attempts to repair program bugs by systematically modifying program code. The only problem was, it could take a prohibitively long time.

The new machine-learning system works in conjunction with that earlier algorithm but ranks possible patches according to the probability that they are correct before subjecting them to time-consuming tests.

The researchers tested the system on a set of 69 real-world errors that had cropped up in eight popular open-source programs. Where earlier bug-repair systems were able to repair one or two of the bugs, the new system repaired between 15 and 18, depending on whether it settled on the first solution it found or was allowed to run longer.

That's certainly useful, but the implications could be even bigger, according to Martin Rinard, a professor of electrical engineering and computer science who was also co-author on the paper.

“One of the most intriguing aspects of this research is that we’ve found that there are indeed universal properties of correct code that you can learn from one set of applications and apply to another set of applications,” Rinard explained. “If you can recognize correct code, that has enormous implications across all software engineering. This is just the first application of what we hope will be a brand-new, fabulous technique.”

Join the newsletter!

Error: Please check your email address.
Rocket to Success - Your 10 Tips for Smarter ERP System Selection
Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Katherine Noyes

IDG News Service
Show Comments

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Ben Ramsden

Sharp PN-40TC1 Huddle Board

Brainstorming, innovation, problem solving, and negotiation have all become much more productive and valuable if people can easily collaborate in real time with minimal friction.

Sarah Ieroianni

Brother QL-820NWB Professional Label Printer

The print quality also does not disappoint, it’s clear, bold, doesn’t smudge and the text is perfectly sized.

Ratchada Dunn

Sharp PN-40TC1 Huddle Board

The Huddle Board’s built in program; Sharp Touch Viewing software allows us to easily manipulate and edit our documents (jpegs and PDFs) all at the same time on the dashboard.

George Khoury

Sharp PN-40TC1 Huddle Board

The biggest perks for me would be that it comes with easy to use and comprehensive programs that make the collaboration process a whole lot more intuitive and organic

David Coyle

Brother PocketJet PJ-773 A4 Portable Thermal Printer

I rate the printer as a 5 out of 5 stars as it has been able to fit seamlessly into my busy and mobile lifestyle.

Kurt Hegetschweiler

Brother PocketJet PJ-773 A4 Portable Thermal Printer

It’s perfect for mobile workers. Just take it out — it’s small enough to sit anywhere — turn it on, load a sheet of paper, and start printing.

Featured Content

Product Launch Showcase

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?