||It has been suggested that this article be merged into Indicator function. (Discuss) Proposed since February 2014.|
If S is countable and its elements are numbered so that , then where if and if
To put it more simply, the indicator vector vector of T is a vector with one element for each element in S, with that element being one if the corresponding element of S is in T, and zero if it is not.
An indicator vector is a special (countable) case of an indicator function.
- Mirkin, Boris Grigorʹevich (1996). Mathematical Classification and Clustering. p. 112. ISBN 0-7923-4159-7. Retrieved 10 February 2014.
- von Luxburg, Ulrike (2007). "A Tutorial on Spectral Clustering" (PDF). Statistics and Computing 17 (4): 2. Retrieved 10 February 2014.
- Decoding Linear Codes Via Optimization and Graph-based Techniques. ProQuest. 2008. p. 21. Retrieved 10 February 2014.