Search Results - "Michael Wolf"

Nonlinear Shrinkage of the Covariance Matrix for Portfolio Selection: Markowitz Meets Goldilocks by Ledoit, Olivier, Wolf, Michael

“…Markowitz (1952) portfolio selection requires an estimator of the covariance matrix of returns. To address this problem, we promote a nonlinear shrinkage…”
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An improved Landauer principle with finite-size corrections by Reeb, David, Wolf, Michael M

“…Landauerʼs principle relates entropy decrease and heat dissipation during logically irreversible processes. Most theoretical justifications of Landauerʼs…”
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Nonlinear shrinkage estimation of large-dimensional covariance matrices by Ledoit, Olivier, Wolf, Michael

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Undecidability of the spectral gap by Cubitt, Toby S., Perez-Garcia, David, Wolf, Michael M.

“…The spectral gap—the energy difference between the ground state and first excited state of a system—is central to quantum many-body physics. Many challenging…”
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The Romano–Wolf multiple-hypothesis correction in Stata by Clarke, Damian, Romano, Joseph P., Wolf, Michael

“…When considering multiple-hypothesis tests simultaneously, standard statistical techniques will lead to overrejection of null hypotheses unless the…”
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Development of the Patient Education Materials Assessment Tool (PEMAT): A new measure of understandability and actionability for print and audiovisual patient information by Shoemaker, Sarah J, Wolf, Michael S, Brach, Cindy

“…Highlights • The PEMAT a new instrument to assess patient education materials. • It assesses understandability and actionability of print and audiovisual…”
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Optimal estimation of a large-dimensional covariance matrix under Stein's loss by LEDOIT, OLIVIER, WOLF, MICHAEL

“…This paper introduces a new method for deriving covariance matrix estimators that are decision-theoretically optimal within a class of nonlinear shrinkage…”
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Spectrum estimation: A unified framework for covariance matrix estimation and PCA in large dimensions by Ledoit, Olivier, Wolf, Michael

“…Covariance matrix estimation and principal component analysis (PCA) are two cornerstones of multivariate analysis. Classic textbook solutions perform poorly…”
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I Make a Lap by Wolf, Michael S.

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Quantum computation and quantum-state engineering driven by dissipation by Verstraete, Frank, Ignacio Cirac, J, Wolf, Michael M

“…The strongest adversary in quantum information science is decoherence, which arises owing to the coupling of a system with its environment. The induced…”
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Hay from the Haystack: Explicit Examples of Exponential Quantum Circuit Complexity by Jia, Yifan, Wolf, Michael M.

“…The vast majority of quantum states and unitaries have circuit complexity exponential in the number of qubits. In a similar vein, most of them also have…”
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Awareness, Attitudes, and Actions Related to COVID-19 Among Adults With Chronic Conditions at the Onset of the U.S. Outbreak: A Cross-sectional Survey by Wolf, Michael S, Serper, Marina, Opsasnick, Lauren, O'Conor, Rachel M, Curtis, Laura, Benavente, Julia Yoshino, Wismer, Guisselle, Batio, Stephanie, Eifler, Morgan, Zheng, Pauline, Russell, Andrea, Arvanitis, Marina, Ladner, Daniela, Kwasny, Mary, Persell, Stephen D, Rowe, Theresa, Linder, Jeffrey A, Bailey, Stacy C

“…The evolving outbreak of coronavirus disease 2019 (COVID-19) is requiring social distancing and other measures to protect public health. However, messaging has…”
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Efficient Organic Tandem Solar Cells based on Small Molecules by Riede, Moritz, Uhrich, Christian, Widmer, Johannes, Timmreck, Ronny, Wynands, David, Schwartz, Gregor, Gnehr, Wolf-Michael, Hildebrandt, Dirk, Weiss, Andre, Hwang, Jaehyung, Sundarraj, Sudhakar, Erk, Peter, Pfeiffer, Martin, Leo, Karl

“…In this paper, two vacuum processed single heterojunction organic solar cells with complementary absorption are described and the construction and optimization…”
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Health literacy and disparities in COVID-19-related knowledge, attitudes, beliefs and behaviours in Australia by McCaffery, Kirsten J, Dodd, Rachael H, Cvejic, Erin, Ayrek, Julie, Batcup, Carys, Isautier, Jennifer Mj, Copp, Tessa, Bonner, Carissa, Pickles, Kristen, Nickel, Brooke, Dakin, Thomas, Cornell, Samuel, Wolf, Michael S

“…To explore the variation in understanding of, attitudes towards, and uptake of, health advice on coronavirus disease 2019 (COVID-19) during the 2020 pandemic…”
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Sulfur-bridged chromophores for photofunctional materials: using sulfur oxidation state to tune electronic and structural properties by Yuan, Jennifer, Xu, Zhen, Wolf, Michael O

“…The use of a heteroatom, such as sulfur, as a linker or bridge, in -conjugated materials has advantages over purely carbon-based ones due to the accessibility…”
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Violation of the entropic area law for fermions by Wolf, Michael M

“…We investigate the scaling of the entanglement entropy in an infinite translational invariant fermionic system of any spatial dimension. The states under…”
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Dynamic anti-counterfeiting security features using multicolor dianthryl sulfoxides by Yuan, Jennifer, Christensen, Peter R, Wolf, Michael O

“…A new concept for difficult-to-replicate security inks for use in advanced anti-counterfeiting applications is presented. Inks fabricated from a mixture of…”
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Targeted Integration of a Super-Exon into the CFTR Locus Leads to Functional Correction of a Cystic Fibrosis Cell Line Model by Bednarski, Christien, Tomczak, Katja, Vom Hövel, Beate, Weber, Wolf-Michael, Cathomen, Toni

“…In vitro disease models have enabled insights into the pathophysiology of human disease as well as the functional evaluation of new therapies, such as novel…”
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Improving procedural and one-year outcome after contact force-guided pulmonary vein isolation: the role of interlesion distance, ablation index, and contact force variability in the 'CLOSE'-protocol by Phlips, Thomas, Taghji, Philippe, El Haddad, Milad, Wolf, Michael, Knecht, Sébastien, Vandekerckhove, Yves, Tavernier, René, Duytschaever, Mattias

“…We have recently shown that a contact force (CF)-guided ablation protocol respecting region-specific criteria of lesion contiguity and lesion depth ('CLOSE'…”
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Measurements incompatible in quantum theory cannot be measured jointly in any other no-signaling theory by Wolf, Michael M, Perez-Garcia, David, Fernandez, Carlos

“…It is well known that jointly measurable observables cannot lead to a violation of any Bell inequality--independent of the state and the measurements chosen at…”
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