Many people know Google first and foremost as a search engine company. But really it’s a machine-learning company, using data to make predictions that get incorporated into applications like search and advertising without people even realizing it.

Today Google is announcing in a blog post that people can now choose to apply its machine-learning savvy to Google Sheets, the company’s spreadsheet app, to make educated guesses and fill in blank cells.

This applied use of machine learning follows Microsoft’s recent announcement of a cloud-based service for that purpose, Azure Machine Learning.

Google has previously offered Autofill capability that could figure out obvious information like the day of the week, a date in a month, or a number in sequential order. Now, with the Smart Autofill add-on, Google is do much more with numbers and words by drawing on its Prediction API, an application programming interface that considers existing numbers or categories and then creates a model to make reasonable approximations.

“The best model is automatically chosen for your problem by finding the one with the smallest misclassification error (for categorical data) or root-mean-squared error (for numeric data) calculated by using cross-validation on the labeled (non-empty) set of examples,” software engineer Konstantin Davydov and research scientist Afshin Rostamizadeh wrote in the blog post.

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The service provides an error rate, so you can see how certain Google is in making its predictions with Smart Autofill, Davydov and Rostamizadeh wrote.