no code implementations • 31 Jan 2023 • Changlong Wu, Ananth Grama, Wojciech Szpankowski
We study the problem of online learning and online regret minimization when samples are drawn from a general unknown non-stationary process.
no code implementations • 9 Sep 2022 • Changlong Wu, Mohsen Heidari, Ananth Grama, Wojciech Szpankowski
We show that for a hypothesis class of VC-dimension $\mathsf{VC}$ and $i. i. d.$ generated features of length $T$, the cardinality of the stochastic global sequential covering can be upper bounded with high probability (whp) by $e^{O(\mathsf{VC} \cdot \log^2 T)}$.
no code implementations • 7 May 2022 • Changlong Wu, Mohsen Heidari, Ananth Grama, Wojciech Szpankowski
We study the sequential general online regression, known also as the sequential probability assignments, under logarithmic loss when compared against a broad class of experts.
no code implementations • 28 Apr 2022 • Riddhiman Adib, Md Mobasshir Arshed Naved, Chih-Hao Fang, Md Osman Gani, Ananth Grama, Paul Griffin, Sheikh Iqbal Ahamed, Mohammad Adibuzzaman
Using CKH, we present a methodological framework for encoding causal priors from various information sources and combining them to derive an SCM.
no code implementations • 22 Mar 2022 • Mohsen Heidari, Ananth Grama, Wojciech Szpankowski
Current solutions for QNNs pose significant challenges concerning their scalability, ensuring that the postulates of quantum mechanics are satisfied and that the networks are physically realizable.
1 code implementation • 21 Sep 2020 • Chih-Hao Fang, Vikram Ravindra, Salma Akhter, Mohammad Adibuzzaman, Paul Griffin, Shankar Subramaniam, Ananth Grama
Sepsis accounts for more than 50% of hospital deaths, and the associated cost ranks the highest among hospital admissions in the US.
no code implementations • 21 Sep 2018 • Huda Nassar, Georgios Kollias, Ananth Grama, David F. Gleich
While there are a large number of effective techniques for pairwise problems with two networks that scale in terms of edges, these cannot be readily extended to align multiple networks as the computational complexity will tend to grow exponentially with the number of networks. In this paper we introduce a new multiple network alignment algorithm and framework that is effective at aligning thousands of networks with thousands of nodes.
1 code implementation • 18 Jul 2018 • Chih-Hao Fang, Sudhir B. Kylasa, Fred Roosta, Michael W. Mahoney, Ananth Grama
First-order optimization methods, such as stochastic gradient descent (SGD) and its variants, are widely used in machine learning applications due to their simplicity and low per-iteration costs.
no code implementations • 22 May 2018 • Vikram Ravindra, Petros Drineas, Ananth Grama
Recent neuroimaging studies have shown that functional connectomes are unique to individuals, i. e., two distinct fMRIs taken over different sessions of the same subject are more similar in terms of their connectomes than those from two different subjects.
no code implementations • 26 Feb 2018 • Sudhir B. Kylasa, Farbod Roosta-Khorasani, Michael W. Mahoney, Ananth Grama
In particular, in convex settings, we consider variants of classical Newton\textsf{'}s method in which the Hessian and/or the gradient are randomly sub-sampled.