MTSU Data Science and Amazon Partner to Host Machine Learning Competition –

As the model race car drove in fits and starts along the mock road course on the MTSU Science Building Atrium floor, an MTSU data science team member had to frequently pick it up and redirect it to stay on the roadway.

Not at all what the team planned, yet it was a problem that flummoxed all five teams who had spent the past two months dabbling in the increasingly important field of machine learning. It was part of a friendly competition of autonomously driven model race cars hosted by the MTSU Data Science Institute in partnership with Amazon Web Services.

“We’re testing this all together so we can get better,” said biology professor Ryan Otter, director of MTSU’s Data Science Institute. “This is the real world, so it’s not always pretty and perfect. … This is just the start.”

Otter made this matter-of-fact observation as he looked on from the steps of the atrium, which was recently transformed into a hands-on exploratory lab for the first of what Otter plans to be many “AWS DeepRacer” events hosted by the university.

DeepRacer allows developers of all skill levels to “get hands on with machine learning through a cloud-based 3D racing simulator, fully autonomous 1/18 scale race car driven by reinforcement learning.” Amazon Web Services describes it as “an interesting and fun way to get started” with machine learning.

MTSU’s Data Science program fielded two teams of students in the Nov. 13 competition along with two teams from Central Magnet School in Murfreesboro and a team from Smyrna High School. The goal was to see which team had developed the best computer training model to help their race car autonomously navigate the small track set up in the atrium.

Otter said student team members have “been teaching their cars how to drive” for the past two months. How? The car is equipped with cameras that constantly take photos of its environment and that information is used to develop a driving model that is then uploaded into the race car, first in a virtual environment and then for the ultimate test on the atrium track.

MTSU computer science major Kendra Givens, a sophomore from Murfreesboro and a member of the MTSU “Dream Team,” was a bit disappointed in the outcome because of the model car struggles on the atrium course despite much better outcomes in the virtual simulations leading up the Nov. 13 competition.

To her and everyone’s surprise, even the Amazon engineers in attendance, the enormous amount of natural light inside the Science Building Atrium on this sunny Saturday afternoon adversely affected the models’ performance, making it difficult for any of them to complete a lap on the track. Whereas students created simulated racers that could navigate the virtual course anywhere from 11 to 15 seconds, the real-life model racers were taking more than a minute to complete a lap — if they completed a lap at all.

A makeshift black curtain was eventually employed to shield the models from all the natural light, with limited success. Despite the letdown, Givens said she would definitely participate in similar events in the future — as long as things were tested in advance, she said with a smile.

“We spent a lot of time working on it. … I do want to do machine learning as a career, which is what this was,” she added. “It was fun. The ending wasn’t fun, but the working on it and seeing the model get better and better …….


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