# General methods outlier detection

What are general methods for outlier detection that do not assume any underlying distribution in the data? I have a dataset with the prizes of the rents in London, as well as their location, number of bedrooms, living rooms and bathrooms. I want to identify outliers in this data, where some of the variables are discrete and some of them are continuous. Any ideas on how to do this?

• are you familiar with influential points? Apr 19, 2018 at 11:39
• Yes, but only in the context of linear models Apr 19, 2018 at 11:41
• They are probable outliers. Apr 19, 2018 at 12:10

Dbscan seems a great choice for you, look at scikit-learn implementation for further discovery.
About being discrete or continuous, it actually doesn't matter, what you have to look at it is if the scale is the best suited for the algorithm in hand (and scikit-learn has algorithms to handle that).