Results 31 to 40 of about 996,357 (278)

Lower Bounds on the Redundancy of Huffman Codes With Known and Unknown Probabilities

open access: yesIEEE Access, 2019
In this paper, we provide a method to obtain tight lower bounds on the minimum redundancy achievable by a Huffman code when the probability distribution underlying an alphabet is only partially known.
Ian Blanes   +3 more
doaj   +1 more source

On lower bounds for the Kirchhoff index [PDF]

open access: yesKragujevac Journal of Science, 2017
Let G be a simple graph of order n ≥ 2 with m edges. Denote by d1 ≥ d2 ≥ · · · ≥ dn > 0 the sequence of vertex degrees and by μ1 ≥ μ2 ≥ · · · ≥ μn−1 > μn = 0 the Laplacian eigenvalues of the graph G. Lower bounds for the Kirchhoff index, Kf(G) = n Σ −1 i=
Milovanović I.Ž. 0000-0003-2209-9606   +1 more
doaj   +1 more source

Model Checking Lower Bounds for Simple Graphs [PDF]

open access: yesLogical Methods in Computer Science, 2014
A well-known result by Frick and Grohe shows that deciding FO logic on trees involves a parameter dependence that is a tower of exponentials. Though this lower bound is tight for Courcelle's theorem, it has been evaded by a series of recent meta-theorems
Michael Lampis
doaj   +1 more source

Lower bounds for adaptive linearity tests [PDF]

open access: yes, 2008
Linearity tests are randomized algorithms which have oracle access to the truth table of some function f, and are supposed to distinguish between linear functions and functions which are far from linear.
Lovett, Shachar
core   +5 more sources

Effective Lower Bound Risk [PDF]

open access: yesFinance and Economics Discussion Series, 2019
Even when the policy rate is currently not constrained by its effective lower bound (ELB), the possibility that the policy rate will become constrained in the future lowers today's inflation by creating tail risk in future inflation and thus reducing expected inflation.
Timothy S. Hills   +2 more
openaire   +1 more source

Quantum SDP-Solvers: Better upper and lower bounds [PDF]

open access: yesQuantum, 2020
Brandão and Svore \cite{brandao2016QSDPSpeedup} recently gave quantum algorithms for approximately solving semidefinite programs, which in some regimes are faster than the best-possible classical algorithms in terms of the dimension $n$ of the problem ...
Joran van Apeldoorn   +3 more
doaj   +1 more source

Lower Complexity Bounds for Lifted Inference [PDF]

open access: yes, 2012
One of the big challenges in the development of probabilistic relational (or probabilistic logical) modeling and learning frameworks is the design of inference techniques that operate on the level of the abstract model representation language, rather ...
Apsel   +21 more
core   +1 more source

The global rate of convergence for optimal tensor methods in smooth convex optimization [PDF]

open access: yesКомпьютерные исследования и моделирование, 2018
In this work we consider Monteiro - Svaiter accelerated hybrid proximal extragradient (A-HPE) framework and accelerated Newton proximal extragradient (A-NPE) framework.
Alexander Vladimirovich Gasnikov   +4 more
doaj   +1 more source

Distribution-sensitive set multi-partitioning [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2005
Given a set $\mathcal{S}$ with real-valued members, associated with each member one of two possible types; a multi-partitioning of $\mathcal{S}$ is a sequence of the members of $\mathcal{S}$ such that if $x,y \in \mathcal{S}$ have different types and $x <
Amr Elmasry
doaj   +1 more source

Special Issue “New Frontiers in Parameterized Complexity and Algorithms”: Foreward by the Guest Editors

open access: yesAlgorithms, 2020
This Special Issue contains eleven articles—surveys and research papers—that represent fresh and ambitious new directions in the area of Parameterized Complexity. They provide ground-breaking research at the frontiers of knowledge, and they contribute to
Neeldhara Misra   +2 more
doaj   +1 more source

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