Search Results for author: Damian Straszak

Found 9 papers, 4 papers with code

Highway: Efficient Consensus with Flexible Finality

no code implementations6 Jan 2021 Daniel Kane, Andreas Fackler, Adam Gągol, Damian Straszak, Vlad Zamfir

We propose Highway, a new consensus protocol that is safe and live in the classical partially synchronous BFT model, while at the same time offering practical improvements over existing solutions.

Distributed, Parallel, and Cluster Computing Cryptography and Security

Aleph: Efficient Atomic Broadcast in Asynchronous Networks with Byzantine Nodes

1 code implementation14 Aug 2019 Adam Gągol, Damian Leśniak, Damian Straszak, Michał Świętek

Virtually every cryptocurrency system has such a protocol at its core, and it is the efficiency of this protocol that determines the overall throughput and latency of the system.

Distributed, Parallel, and Cluster Computing Cryptography and Security

Fair and Diverse DPP-based Data Summarization

1 code implementation ICML 2018 L. Elisa Celis, Vijay Keswani, Damian Straszak, Amit Deshpande, Tarun Kathuria, Nisheeth K. Vishnoi

Sampling methods that choose a subset of the data proportional to its diversity in the feature space are popular for data summarization.

Data Summarization Fairness

Maximum Entropy Distributions: Bit Complexity and Stability

no code implementations6 Nov 2017 Damian Straszak, Nisheeth K. Vishnoi

Our main result shows a ${\rm poly}(m, \log 1/\varepsilon)$ bound on the bit complexity of $\varepsilon$-optimal dual solutions to the maximum entropy convex program -- for very general support sets and with no restriction on the marginal vector.

Belief Propagation, Bethe Approximation and Polynomials

no code implementations8 Aug 2017 Damian Straszak, Nisheeth K. Vishnoi

While it is known that the stationary points of the Bethe approximation coincide with the fixed points of belief propagation, in general, the relation between the Bethe approximation and the partition function is not well understood.

Subdeterminant Maximization via Nonconvex Relaxations and Anti-concentration

no code implementations10 Jul 2017 Javad B. Ebrahimi, Damian Straszak, Nisheeth K. Vishnoi

The volume of a set of vectors is used as a measure of their diversity, and partition or matroid constraints over $[m]$ are imposed in order to ensure resource or fairness constraints.

Data Summarization Fairness

Ranking with Fairness Constraints

2 code implementations22 Apr 2017 L. Elisa Celis, Damian Straszak, Nisheeth K. Vishnoi

Ranking algorithms are deployed widely to order a set of items in applications such as search engines, news feeds, and recommendation systems.

Attribute Fairness +2

On the Complexity of Constrained Determinantal Point Processes

no code implementations1 Aug 2016 L. Elisa Celis, Amit Deshpande, Tarun Kathuria, Damian Straszak, Nisheeth K. Vishnoi

Consequently, we obtain a few algorithms of independent interest: 1) to count over the base polytope of regular matroids when there are additional (succinct) budget constraints and, 2) to evaluate and compute the mixed characteristic polynomials, that played a central role in the resolution of the Kadison-Singer problem, for certain special cases.

Fairness Point Processes

IRLS and Slime Mold: Equivalence and Convergence

1 code implementation12 Jan 2016 Damian Straszak, Nisheeth K. Vishnoi

In this paper we present a connection between two dynamical systems arising in entirely different contexts: one in signal processing and the other in biology.

Cannot find the paper you are looking for? You can Submit a new open access paper.