Results 51 to 60 of about 193,490 (288)

经典组合优化问题的概率极限定理(Probability limit theorems of classical combinatorial optimization problems)

Zhejiang Daxue xuebao. Lixue ban, 2000
A review was given of the principal probability limit theorems of solutions to classical combinatorial optimization problems.The emphasis was on the travelling salesman problems,minimal spanning trees,matching and lengths of the longest increasing ...
SUZhong-gen(苏中根)
doaj   +1 more source

Subtype‐specific enhancer RNAs define transcriptional regulators and prognosis in breast cancers

Molecular Oncology, EarlyView.
This study employed machine learning methodologies to perform the subtype‐specific classification of RNA‐seq data sets, which are mapped on enhancers from TCGA‐derived breast cancer patients. Their integration with gene expression (referred to as ProxCReAM eRNAs) and chromatin accessibility profiles has the potential to identify lineage‐specific and ...
Aamena Y. Patel, Peyman Zarrineh, Nathnael T. Tuffa, Jigar H. Sheth, Sumitra Mohan, Mudassar Iqbal, Sankari Nagarajan   +6 more
wiley   +1 more source

Sampling with removal in LP-type problems

Journal of Computational Geometry, 2015
Random sampling is an important tool in optimization subject to finitely or infinitely many constraints. Here we are interested in obtaining solutions of low cost that violate only few constraints.
Bernd Gärtner
doaj   +1 more source

Genetic attenuation of ALDH1A1 increases metastatic potential and aggressiveness in colorectal cancer

Molecular Oncology, EarlyView.
Aldehyde dehydrogenase 1A1 (ALDH1A1) is a cancer stem cell marker in several malignancies. We established a novel epithelial cell line from rectal adenocarcinoma with unique overexpression of this enzyme. Genetic attenuation of ALDH1A1 led to increased invasive capacity and metastatic potential, the inhibition of proliferation activity, and ultimately ...
Martina Poturnajova, Zuzana Kozovska, Ondrej Pos, Kristina Pavlov, Sachin Gulati, Peter Makovicky, Kristina Jakic, Monika Burikova, Eva Sedlackova, Barbora Svitkova, Silvia Tyciakova, Vojtech Bystry, Nicolas Blavet, Boris Tichy, Matej Hrnciar, Jaroslav Budis, Miroslav Tomas, Peter Dubovan, Georgina Kolnikova, Veronika Repaska, Nikoleta Mojzesova, Eva Zomborska, Daniel Pindak, Michal Mego, Tomas Szemes, Miroslava Matuskova   +25 more
wiley   +1 more source

Distance-based exponential probability models on constrained combinatorial optimization problems [PDF]

Proceedings of the Genetic and Evolutionary Computation Conference Companion, 2018
Estimation of distribution algorithms have already demonstrated their utility when solving a broad range of combinatorial problems. However, there is still room for methodological improvements when approaching constrained type problems. The great majority of works in the literature implement external repairing or penalty schemes, or use ad-hoc sampling
Ceberio, J., Mendiburu, A., Lozano, J.A.
openaire   +2 more sources

Probability Mechanism Based Particle Swarm Optimization Algorithm and Its Application in Resource-Constrained Project Scheduling Problems

Discrete Dynamics in Nature and Society, 2019
In this paper, a new probability mechanism based particle swarm optimization (PMPSO) algorithm is proposed to solve combinatorial optimization problems.
Shuai Li, Zhicong Zhang, Xiaohui Yan, Liangwei Zhang   +3 more
doaj   +1 more source

COMP–PMEPA1 axis promotes epithelial‐to‐mesenchymal transition in breast cancer cells

Molecular Oncology, EarlyView.
This study reveals that cartilage oligomeric matrix protein (COMP) promotes epithelial‐to‐mesenchymal transition (EMT) in breast cancer. We identify PMEPA1 (protein TMEPAI) as a novel COMP‐binding partner that mediates EMT via binding to the TSP domains of COMP, establishing the COMP–PMEPA1 axis as a key EMT driver in breast cancer.
Konstantinos S. Papadakos, Gilar Gorji‐bahri, Lejla Gradjan, Julia Zajac, Kacper Gil, Yvonne Thokozile Nduku, Anna M. Blom   +6 more
wiley   +1 more source

Amenability of groups and $G$-sets

, 2017
This text surveys classical and recent results in the field of amenability of groups, from a combinatorial standpoint. It has served as the support of courses at the University of G\"ottingen and the \'Ecole Normale Sup\'erieure.
A. Hulanicki, A. W. Goldie, Adolf Hurwitz, Antoine Gournay, Antonio Machì, B Seward, B Weiss, Barry Edward Johnson, Bruce Hughes, Bruce Kleiner, C. St J. A. Nash-Williams, Dave Witte Morris, Donald S. Ornstein, Erling Folner, Erling Følner, Etienne Ghys, F. Hausdorff, F.P. Greenleaf, G. A. Hedlund, GA Willis, Gregori Aleksandrovitch Margulis, H Reiter, H. Bass, Harry Furstenberg, Harry Kesten, Irving Kaplansky, Itai Benjamini, Itai Benjamini, J Tits, J. Kelley, Joel M Cohen, John Milnor, John Myhill, Jérémie Brieussel, K Whyte, Kate Juschenko, Kate Juschenko, Lars Ahlfors, Laurent Bartholdi, Laurent Bartholdi, Laurent Bartholdi, M. Gromov, M. H. Stone, MCH Tointon, Michael Keane, Mikhael Gromov, N. L. Biggs, N. Monod, Olle Häggström, Oystein Ore, P. Hall, Paul J. Cohen, R Rado, RICHARD H. HERMAN, Ryszard Szwarc, S. C. Coutinho, S. GOUEZEL, Shizuo Kakutani, Shmuel Glasner, Stefan Banach, T. Y. Lam, Tullio G. Ceccherini-Silberstein, V. A. Kaimanovich, Vadim A. Kaimanovich, Volodymyr Nekrashevych, W Rudin, W Woess, W Woess, W. H. Gottschalk, William L. Paschke, Y Shalom, Y. Glasner, Yash Lodha   +72 more
core   +1 more source

The Concepts of Pseudo Compound Poisson and Partition Representations in Discrete Probability

Journal of Probability and Statistics, 2015
The mathematical/statistical concepts of pseudo compound Poisson and partition representations in discrete probability are reviewed and clarified. A combinatorial interpretation of the convolution of geometric distributions in terms of a variant of ...
Werner Hürlimann
doaj   +1 more source

SINGULARITY OF RANDOM SYMMETRIC MATRICES—A COMBINATORIAL APPROACH TO IMPROVED BOUNDS

Forum of Mathematics, Sigma, 2019
Let $M_{n}$ denote a random symmetric $n\times n$ matrix whose upper-diagonal entries are independent and identically distributed Bernoulli random variables (which take values $1$ and $-1$ with probability $1/2$ each). It is widely conjectured that $M_{n}
ASAF FERBER, VISHESH JAIN
doaj   +1 more source