# What is the meaning of spherical dataset?

In the following article, one of the statement is as follows:

The K-means algorithm is effective only for spherical datasets

What does spherical dataset mean?

• In this context it means the clusters are spherical in shape.
– Emre
Sep 6 '17 at 18:06
• Second what Emre said, k-means is (more) effective for spherical clusters, not spherical datasets. The paper may be wrong or just not very precisely worded. By the way: sufficiently high-dimensional datasets tends to have some surprising distance properties: stats.stackexchange.com/questions/99171/… Dec 7 '18 at 19:02