A tail inequality for quadratic forms of subgaussian random vectors
@article{ECP2079, author = {Daniel Hsu and Sham Kakade and Tong Zhang}, title = {A tail inequality for quadratic forms of subgaussian random vectors}, journal = {Electron. Commun. Probab.}, fjournal = {Electronic Communications in Probability}, volume = {17}, year = {2012}, keywords = {Tail inequality; quadratic form; subgaussian random vectors; subgaussian chaos}, abstract = {This article proves an exponential probability tail inequality for positive semidefinite quadratic forms in a subgaussian random vector. The bound is analogous to one that holds when the vector has independent Gaussian entries.
}, pages = {no. 52, 1-6}, issn = {1083-589X}, doi = {10.1214/ECP.v17-2079}, url = {http://ecp.ejpecp.org/article/view/2079}}