Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Associating or clustering data based on common attributes or properties.

Grouping is the association of data based on common attributes or properties. For example a set of points might be placed in a group because they all have the same value for a given attribute, or are all within x distance of one another.

history | excerpt history