Search Results for author: Mehmet Eren Ahsen

Found 4 papers, 1 papers with code

Unsupervised Evaluation and Weighted Aggregation of Ranked Predictions

2 code implementations13 Feb 2018 Mehmet Eren Ahsen, Robert Vogel, Gustavo Stolovitzky

Learning algorithms that aggregate predictions from an ensemble of diverse base classifiers consistently outperform individual methods.

Binary Classification Ensemble Learning +1

An Approach to One-Bit Compressed Sensing Based on Probably Approximately Correct Learning Theory

no code implementations22 Oct 2017 Mehmet Eren Ahsen, Mathukumalli Vidyasagar

By coupling this estimate with well-established results in PAC learning theory, we show that a consistent algorithm can recover a $k$-sparse vector with $O(k \lg (n/k))$ measurements, given only the signs of the measurement vector.

2k Learning Theory +1

Two New Approaches to Compressed Sensing Exhibiting Both Robust Sparse Recovery and the Grouping Effect

no code implementations30 Oct 2014 Mehmet Eren Ahsen, Niharika Challapalli, Mathukumalli Vidyasagar

It is shown here that SGL achieves robust sparse recovery, and also achieves a version of the grouping effect in that coefficients of highly correlated columns belonging to the same group of the measurement (or design) matrix are assigned roughly comparable values.

Near-Ideal Behavior of Compressed Sensing Algorithms

no code implementations26 Jan 2014 Mehmet Eren Ahsen, Mathukumalli Vidyasagar

In a recent paper, it is shown that the LASSO algorithm exhibits "near-ideal behavior," in the following sense: Suppose $y = Az + \eta$ where $A$ satisfies the restricted isometry property (RIP) with a sufficiently small constant, and $\Vert \eta \Vert_2 \leq \epsilon$.

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