All Stories

  1. Fast Direct Methods for Gaussian Processes

    Article • IEEE Transactions on Pattern Analysis and Machine Intelligence, February 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Sivaram Ambikasaran

  2. O(N) Fast direct inverse and determinant computation of a dense structured matrix.

    Article • Numerical Linear Algebra with Applications, June 2015, Wiley

    Professor Sivaram Ambikasaran

  3. Fast O(N) Kalman filtering

    Article • Water Resources Research, May 2014, American Geophysical Union (AGU)

    Professor Sivaram Ambikasaran

  4. A Fast Direct Solver for High Frequency Scattering from a Large Cavity in Two Dimensions

    Article • SIAM Journal on Scientific Computing, January 2014, Society for Industrial & Applied Mathematics (SIAM)

    Professor Sivaram Ambikasaran

  5. Large-scale stochastic linear inversion using hierarchical matrices

    Article • Computational Geosciences, July 2013, Springer Science + Business Media

    Professor Sivaram Ambikasaran

  6. An $$\mathcal O (N \log N)$$ O ( N log N )   Fast Direct Solver for Partial Hierarchically Semi-Separable Matrices

    Article • Journal of Scientific Computing, April 2013, Springer Science + Business Media

    Professor Sivaram Ambikasaran

  7. Fast Algorithms for Bayesian Inversion

    Article • January 2013, Springer Science + Business Media

    Professor Sivaram Ambikasaran

  8. Deterministic matrices matching the compressed sensing phase transitions of Gaussian random matrices

    Article • Proceedings of the National Academy of Sciences, December 2012, Proceedings of the National Academy of Sciences

    Professor Sivaram Ambikasaran

  9. Application of Hierarchical Matrices to Linear Inverse Problems in Geostatistics

    Article • Oil & Gas Science and Technology – Revue d’IFP Energies nouvelles, September 2012, EDP Sciences

    Professor Sivaram Ambikasaran