Skip to main content
All Questions

What is the closed-form solution of OLS linear regression? If the design matrix is large because there are many features, how do you speed up the calculation?

Unlock detailed company stats for this questionUpgrade

Community answers

No answers contributed by the community yet.

Related questions

Give the closed-form solution of linear regression, with and without L2 regularisation.Write a MapReduce algorithm for the closed-form OLS solution when the number of rows n is far too large for one machine, the number of features k is small and you have m machines.The design matrix in a least squares regression is rank deficient. How do you deal with it?

Related courses

Course

SQL Interview Prep Course

Prepare for SQL interviews with lessons on joins, aggregations, and window functions, then practice real SQL interview questions in an interactive editor with expert solutions.

Course

Data Science Interview Prep

Land your dream data science role at Google, Amazon, Microsoft, Meta, Apple, and other top companies. Learn from mock interviews, frameworks, and advice from senior candidates. Practice statistics, experimentation, coding, SQL, machine learning, behavioral interviews, and more.