The Keys to Assembling Your AI Datasets

Assemble your datasets

Once you clearly define the purpose of your AI initiative, you can focus on the data your model will need to meet the business objective.

Select inputs and outputs

The function of AI is simple — transform specific inputs into outputs (also called targets). Once you determine your business case, you will know what those inputs and outputs should be. For example, a spam filter will turn an input (an email) into one of two outputs: spam or not spam.

Your inputs and outputs should be simple. Don’t overthink them.

Identify relevant variables

A feature (or variable) is any attribute of the object you’re trying to analyze. Take the above example of an algorithm designed to weed out spam. Features can include words used in an email message, the sender’s address, the date it was sent, the presence of attachments and so on.

Your algorithm should use specific and relevant features to weed out spammy or dangerous messages. This requires you to identify the variables you want your model to pay the most attention to, such as messages with specific explicit or spammy language as well as suspicious attachments.

Refine variables

When you’re refining your feature choices, winnow your selections down to the most relevant features rather than add new features. Remove irrelevant features — such as the length of an email — to train your model to focus on the features that matter.

Why is this important? The quality of the features you choose prevents your model from overfitting — making correlations specific to your training values — which will save you grief during validation and testing.

Label outputs

Your target, or output, is the piece in your dataset that you want to learn more about. For example, is an email spam? For an image recognition model, who (or what) is in the picture? The only way for the machine to learn and adapt is to properly label each output.

During model training, your initial dataset should contain inputs and clearly labeled outputs. This is how your model learns to identify outputs correctly when it’s operating independently in the real world. If your initial targets are not labeled properly, your model won’t understand the correlations it’s supposed to make.

Understanding the nuances of your datasets and how they apply to the bigger picture is half the battle. Now comes the hard part — ensuring you collect quality data, then train and test your model with it.

Without quality data, your algorithm will give you more problems than answers. Only high-quality data can produce meaningful AI initiatives. Quality is always the answer, so prioritize it from the start.

See what you need to ensure quality data and how to segment it for training and testing in our next blog.