Results 41 to 50 of about 190,858 (265)

A Heuristic for Graph Coloring Based on the Ising Model

open access: yesMathematics
We propose a dynamic extension of the Petford–Welsh coloring algorithm that estimates the chromatic number of a graph without requiring k as an input.
Omkar Bihani, Janez Žerovnik
doaj   +1 more source

Improved Generalized Cross-Validation and Unbiased Predictive Risk Estimator Methods Using the RGSVD: Application to Inversion of Potential Field Data

open access: yesApplied Sciences, 2021
The inversion of potential field data has widely utilized the generalized cross-validation (GCV) and the unbiased predictive risk estimator (UPRE) methods to determine the regularization parameter.
Yuan Fang   +3 more
doaj   +1 more source

Keratin 19 as a prognostic marker and contributing factor of metastasis and chemoresistance in high‐grade serous ovarian cancer

open access: yesMolecular Oncology, EarlyView.
Keratin 19 (KRT19) is overexpressed in high‐grade serous ovarian cancer with high levels of Kallikrein‐related peptidases (KLK) 4–7 and is associated with poor survival. In vivo analyses demonstrate that elevated KRT19 increases peritoneal tumour burden.
Sophia Bielesch   +13 more
wiley   +1 more source

An introduction to randomized algorithms

open access: yesDiscrete Applied Mathematics, 1991
The concept of randomization is known to be an extremely important tool for the design of algorithms. Its use often yields better time or space complexity compared with the best deterministic algorithms we know of for the same problem; moreover resulting randomized algorithms are often very simple to understand and implement.
openaire   +1 more source

A randomized maximum-flow algorithm [PDF]

open access: yes30th Annual Symposium on Foundations of Computer Science, 1989
Summary: A randomized algorithm for computing a maximum flow is presented. For an \(n\)-vertex \(m\)-edge network, the running time is \(O(nm + n^2 (\log n)^2)\) with probability at least \(1 - 2^{- \sqrt {nm}}\). The algorithm is always correct, and in the worst case runs in \(O(nm \log n)\) time.
Cheriyan, J., Hagerup, T.
openaire   +2 more sources

Randomized and Optimal Algorithms for k-Lifetime Dominating Set in Wireless Sensor Networks

open access: yesIEEE Access, 2022
In wireless sensor networks, rotating dominating set is an efficient method for balancing the energy consumption of nodes, and thereby extending the network operational time.
Weizhong Luo, Junbin Liang, Tianshu Wang
doaj   +1 more source

Deciphering transcriptional plasticity in pancreatic ductal adenocarcinoma reveals alterations in sensory neuron innervation

open access: yesMolecular Oncology, EarlyView.
Pancreatic sensory neurons innervating healthy and PDAC tissue were retrogradely labeled and profiled by single‐cell RNA sequencing. Tumor‐associated innervation showed a dominant neurofilament‐positive subtype, altered mitochondrial gene signatures, and reduced non‐peptidergic neurons.
Elena Genova   +14 more
wiley   +1 more source

A Monad for Randomized Algorithms

open access: yesElectronic Notes in Theoretical Computer Science, 2016
AbstractIn this paper, we introduce a monad of random choice for domains that does not suffer from the main two drawbacks of the probabilistic powerdomain. It is not known whether any Cartesian closed category of domains is closed under the probabilistic powerdomain, but the Cartesian closed category BCD is closed under this monad of random choice ...
openaire   +1 more source

General Position Subset Selection in Line Arrangements

open access: yesAlgorithms
Given a set of n points in a plane, the General Position Subset Selection problem is that of finding a maximum-size subset of points in general position, i.e., with no three points collinear.
Adrian Dumitrescu
doaj   +1 more source

Heterozygous loss‐of‐function alleles associate the conserved 3′‐5′ exoribonuclease EXOSC10 with hypersensitivity to the anticancer drug 5‐fluorouracil

open access: yesMolecular Oncology, EarlyView.
EXOSC10, an essential nuclear RNA exosome‐associated 3′‐5′ exoribonuclease, is inhibited by the anticancer drug 5‐fluorouracil (5‐FU), and EXOSC10 depletion increases 5‐FU sensitivity. The colon‐cancer variant EXOSC10S402T, located in a proteolysis motif, is stable and nuclear but nonfunctional in vivo.
Radhika Sain   +10 more
wiley   +1 more source

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