We propose a novel variant of the UCB algorithm (referred to as Efficient-UCB-Variance (EUCBV)) for minimizing cumulative regret in the stochastic multi-armed bandit (MAB) setting. EUCBV incorporates the arm elimination strategy proposed in UCB-Improved (Auer and Ortner, 2010), while taking into account the variance estimates to compute the arms’ confidence bounds, similar to UCBV (Audibert, Mu...

1Castelo Branco University (UCB), Laboratory of Human Motricity Biosciences (LABIMH), Rio de Janeiro, Brazil; 2Castelo Branco University (UCB), Laboratory of Human Motricity Biosciences (LABIMH), Rio de Janeiro, Brazil; 3Estácio de Sá University (UNESA), Rio de Janeiro, Brazil; 4National Institute of Cancer (INCA), Rio de Janeiro, Brazil; 5Castelo Branco University (UCB), Laboratory of Human Mo...

To quickly recap the setup: we have 1, · · · , n arms and for each arm i, we have an associated random variable Xi bounded in [0, 1] and our goal is to minimize regret (maximize reward) where regret is defined wrt the best fixed strategy a posteriori. Every time we play arm i, the reward is picked independently and randomly with distribution Xi. We have shown in previous lectures that if we res...

2.4 Principal Investigators: Professor David Auslander, Department of Mechanical Engineering, U.C. Berkeley (UCB) Professor David Culler, Department of Electrical Engineering, U.C. Berkeley (UCB) Professor Paul K. Wright, Director, Center for Information Technology Research in the Interest of Society (CITRIS) and the Department of Mechanical Engineering, U.C. Berkeley (UCB) Dr. Yan Lu, Siemens ...

Unrelated cord blood (UCB) is being used as a source of alternative hematopoietic stem cells for transplantation with increasing frequency. From November 1994 to February 1999, 30 UCB transplant procedures were performed for both malignant and nonmalignant diseases in 27 children, aged 0.4 to 17.1 years. Patients received either HLA-matched (n = 3) or 1- or 2-antigen-mismatched (n = 27) UCB fol...

Submit Manuscript | http://medcraveonline.com Abbreviations: UCB-SCs: Umbilical Cord Blood-Derived Stem Cells; HSCs: Hematopoietic Stem Cells; MSCs: Mesenchymal Stem Cells; UCB-MSCs: Umbilical Cord Blood-derived Mesenchymal Stem Cells; UCB-MSCs: Umbilical Cord Blood-derived MSCs; hUCB-MSCs: Human Umbilical Cord Blood-derived MSCs; GvHD: Graft-versus-Host Disease; HIV: Human Immunodeficiency Virus.

OBJECTIVE To investigate the correlation between ultrasound measured placental volume and collected umbilical cord blood (UCB) volume in term pregnancy. MATERIAL AND METHODS An observational cross-sectional study of term singleton pregnant women in the labor ward at Maha Chakri Sirindhorn Medical Center was conducted. Placental thickness, height, and width were measured using two-dimensional ...

In the recent years, umbilical cord blood (UCB) has emerged as an alternative source of hematopoietic progenitors (CD34+) for allogeneic stem cell transplantation, mainly in patients lacking an HLA-matched marrow donor. Since 1998, about 2500 patients have received UCB transplants for a variety of malignant and non-malignant diseases. The vast majority of recipients were children with an averag...

In multi-robot systems, efficient navigation is challenging as agents need to adjust their paths to account for potential collisions with other agents and static obstacles. In this paper, we present an online machine learning approach, -UCB, which improves global efficiency in the motions of multiple agents by building on ORCA, an existing multiagent navigation algorithm, and on UCB, a widely u...

Use of umbilical unrelated cord-blood (UCB) cells as an alternative source of hematopoietic cell transplantation has been widely used mainly for patients lacking an HLA-matched donor. UCB present many advantages over bone marrow or mobilized peripheral blood from volunteer donors, such as rapid availability, absence of risk for the donor, and decreased incidence of acute graft-versus-host disea...