May 19, 2018
What street legal cars taught me about Machine learning? It's all about the right data being available and the RDW data can't be trusted!
I impulsively signed up for an Artificial Intelligence certification track 2 months ago, So I've been experimenting with Artificial Intelligence for a while now and in the beginning of the course it was one though cookie! Those formula's to interpreted the data predictability really freaked me out!
But once I got past the formula's and I saw the resemblance of the workspace with Microsoft products like SSIS and BI I see endless possibilities. This takes the data to a whole new level.
Preparing the data:
I did a test on all cars that are currently on the road in the Netherlands and combined it with performance data. I wanted to find the fastest street legal car. I guess I just wanted to find out what kind of cars I should fancy these days according to the performance stats.
I used an open data set from the dutch RWD (Driver and Vehicle Standards Agency). It contained 14m rows and it's 7GB in size. So I had to prepare the data in order to keep the experiment basic and performance high. I imported it into my SQL server and I filtered out the the stationwagons, campers, scooters and trailers, So I was left with a 900000 rows data set.
I use a SQL Server 2017 and the Microsoft Azure machine learning studio to create a new experiment.
In order to make a prediction I needed to combine the brand data with the engine displacement data, because horsepower data was not available, to see which models are high performance based on the engine capacity. So sadly the smaller engines which are supercharged are not correctly represented in the prediction.
The calculation based on above rules, took a local SQL server on an i5 laptop about 15 minutes. I needed more data preparation.
Based on engine displacement, a top 3 came up. But I didn't like the results at all. Sure, the engine displacement was high, but the cars are heavy and their performance isn't the best. Super charged Turbo's and gearing make all the difference, but aren't properly represented in this data result.
I had to filter out a lot of data, next up I added the weight of the car, but it wasn't trust worthy either. I found a data set which contained the Kw of the cars and top speed and joined the data with my current results and added a calculation in SQL on the Kw row * 1,362 to calculate the Hp of the car. The Hp outcome looks pretty accurate. After 4 hours of combining data and filtering the queries I gave up. Based on this data there is no way you can truly point out the fastest cars. I had to change my plans. Too many uncertain variables to make a decent prediction and not even close to the start of an IA project 🙁
After more data crunching, The results are still not really worth to display. So here is a TOP 21 of "fastest" cars...based on...well the obvious HP and Weight sorting:
Ok, I got a little bit carried away with data prepping.
Now let's import it into an IA experiment: First you need to create a resource in the Azure Portal for your workspace. I won't get into details, we did this before!
Verify that you created the following new resources: A Machine Learning Workspace, A Machine Learning Plan and A Storage Account.
Browse to the Machine learning workspace you created and launch Machine Learning Studio. This opens a new browser page.
Go to experiments and down in the left corner click NEW.
Rename the experiment and add a dataset. Upload a new dataset. Datasets --> NEW--> Select data to upload. Now that you have the dataset ready, you can drag it into your experiment and start running tests and variables on the data.
In my next post we will dive deeper into Artificial Intelligence