no code implementations • 10 May 2023 • Prabhu Babu, Petre Stoica
We also propose two important reformulations of the fair PCA problem: a) fair robust PCA -- which can handle outliers in the data, and b) fair sparse PCA -- which can enforce sparsity on the estimated fair principal components.
no code implementations • 10 May 2023 • Petre Stoica, Prabhu Babu
We also present an additional new metric for multinary classification which can be viewed as a direct extension of MCC.
1 code implementation • 20 Jan 2023 • Sofia Ek, Dave Zachariah, Fredrik D. Johansson, Petre Stoica
We consider the problem of evaluating the performance of a decision policy using past observational data.
no code implementations • 27 Sep 2022 • Petre Stoica, Xiaolei Shang, Yuanbo Cheng
Moreover, the CRB is an achievable limit, for instance it is asymptotically attained by the maximum likelihood estimator (under regularity conditions), and thus it is a useful benchmark to which the accuracy of any parameter estimator can and should be compared.
1 code implementation • 22 Jun 2022 • Ludvig Hult, Dave Zachariah, Petre Stoica
Assessment of model fitness is a key part of machine learning.
no code implementations • 6 Feb 2022 • Ghania Fatima, Aakash Arora, Prabhu Babu, Petre Stoica
The proposed algorithm does not require tuning of any hyperparameter and it has the desirable feature of eliminating the inactive variables in the course of the iterations - which can help speeding up the algorithm.
no code implementations • 21 Jan 2022 • Per Mattsson, Dave Zachariah, Petre Stoica
We start by showing that three known optimal linear estimators belong to a wider class of estimators that can be formulated as a solution to a weighted and constrained minimization problem.
no code implementations • 19 Oct 2021 • Sofia Ek, Dave Zachariah, Petre Stoica
The paper considers the problem of multi-objective decision support when outcomes are uncertain.
no code implementations • 18 May 2021 • Muhammad Osama, Dave Zachariah, Petre Stoica
We consider the problem of learning from training data obtained in different contexts, where the underlying context distribution is unknown and is estimated empirically.
no code implementations • 31 Mar 2021 • Xiaolei Shang, Jian Li, Petre Stoica
The recently proposed hyperparameter-free (and hence user friendly) weighted SPICE algorithms, including SPICE, LIKES, SLIM and IAA, achieve excellent parameter estimation performance for data sampled with high precision.
no code implementations • 21 Mar 2021 • Jiaying Ren, Tianyi Zhang, Jian Li, Petre Stoica
In a previous paper, a relaxation-based algorithm, referred to as 1bRELAX, has been proposed to iteratively maximize the likelihood function.
no code implementations • 19 Mar 2021 • Tianyi Zhang, Jiaying Ren, Jian Li, Lam H. Nguyen, Petre Stoica
Radio frequency interference (RFI) mitigation and radar echo recovery are critically important for the proper functioning of ultra-wideband (UWB) radar systems using one-bit sampling techniques.
no code implementations • 17 Feb 2021 • Tianyi Zhang, Jiaying Ren, Jian Li, Lam H. Nguyen, Petre Stoica
A one-bit UWB system obtains its signed measurements via a low-cost and high rate sampling scheme, referred to as the Continuous Time Binary Value (CTBV) technology.
1 code implementation • 9 Oct 2020 • Muhammad Osama, Dave Zachariah, Satyam Dwivedi, Petre Stoica
We address the problem of timing-based localization in wireless networks, when an unknown fraction of data is corrupted by nonideal signal conditions.
1 code implementation • NeurIPS 2019 • Muhammad Osama, Dave Zachariah, Petre Stoica
A spatial point process can be characterized by an intensity function which predicts the number of events that occur across space.
no code implementations • 16 Dec 2019 • Xiuming Liu, Dave Zachariah, Petre Stoica
The robustness properties of the approach are demonstrated on both real and synthetic data.
1 code implementation • 26 Feb 2019 • Dave Zachariah, Petre Stoica
In many applications, different populations are compared using data that are sampled in a biased manner.
1 code implementation • 17 Aug 2018 • Andreas Svensson, Dave Zachariah, Petre Stoica, Thomas B. Schön
The contribution in this paper is a general criterion to evaluate the consistency of a set of statistical models with respect to observed data.
1 code implementation • 19 May 2017 • Dave Zachariah, Petre Stoica
We develop a novel method for counterfactual analysis based on observational data using prediction intervals for units under different exposures.
1 code implementation • 15 Mar 2017 • Dave Zachariah, Petre Stoica, Thomas B. Schön
We develop an online learning method for prediction, which is important in problems with large and/or streaming data sets.
1 code implementation • 14 Jun 2016 • Per Mattsson, Dave Zachariah, Petre Stoica
In this paper we develop a method for learning nonlinear systems with multiple outputs and inputs.
no code implementations • 13 Jun 2016 • Johan Wågberg, Dave Zachariah, Thomas B. Schön, Petre Stoica
Starting from a generalization of the Cram\'er-Rao bound, we derive a more accurate MSE bound which provides a measure of uncertainty for prediction of Gaussian processes.