Read Text Contents from a URL The class java.net.URL represents a URL (Uniform Resource Locator), a pointer to a “resource” on the Internet. For example, the following is a URL: http://www.example.com/index.html “http” stands for HyperText Transfer Protocol “www.example.com” is the …
Parameters of a method are specified in the method declaration. When we call a method, we must provide values that match with the types of the parameters. In the following example, the sum method accepts two integers and returns their …
Linear Functions A function \(f\colon F_2^n \to F_2\) is linear if \(f(x+y) = f(x) +f(y)\) for all \(x,y\in F_2^n\). Equivalently, \(f\) is linear if and only if there exists \(a\in F_2^n\) such that \(f(x) = ax\), or there exists \(S\subseteq …
Nearest neighbor search is common in geographical databases. Here we consider searching for nearby locations in a large geographical database. Many commercial databases have geographical indexes supporting such queries; however, in MySQL there is no simple implementation. We show a …
Nearest Neighbor Search by Distance in Large Datasets with MySQL Read more »