What is katz?

Katz can refer to a variety of topics or names, including people, businesses, or concepts. Here are a few possibilities:

1. Katz Deli: Katz's Delicatessen is a famous deli located in New York City, known for its pastrami sandwiches and historical significance. It has been a staple in the Lower East Side since 1888 and gained international fame due to its appearance in movies, most notably the iconic scene from "When Harry Met Sally."

2. KATZ Radio Group: KATZ is also a radio station group or call sign for various radio stations across the United States. In St. Louis, Missouri, for instance, KATZ-FM and KATZ-AM are notable stations, with KATZ-FM primarily playing urban contemporary music and KATZ-AM broadcasting gospel music.

3. David Katz: The name Katz is shared by several notable individuals. For example, David Katz is a well-known American physician and health expert who has written extensively on public health and nutrition.

4. Katz Distribution and Transmission Models: In probability theory and statistics, Katz's models, like the Katz back-off model, are used in natural language processing. The back-off model is a type of n-gram language model that deals with infrequent and unseen n-grams.

5. Katz Centrality: In network theory, Katz centrality is a measure of node importance in a network. It evaluates the relative influence of a node by considering the number of paths leading to it, with longer paths having exponentially diminishing weight.

6. Katz's Law: Katz's law is a humorous adage often stated as "Men and nations behave wisely once they have exhausted all other alternatives."

If you have a specific Katz in mind, please provide additional context for a more targeted response.