Web sites are found by their addresses on the World Wide Web. These addresses are known as URLs, or Uniform Resource Locators. Every website has a URL assigned to it, so both searchers and Web servers can find them quickly and easily.
Cluster analysis or clustering is the task of grouping a set of objects in such a way that objects in the same group (called a cluster) are more similar (in some sense or another) to each other than to those in other groups (clusters).
Tieing, commonly spelled as tying, is defined as forming a knot or a connection between two or more people. An example of tieing is to form a bow in a scarf. tieing. Present participle of tie; alternative spelling of tying.