Results 61 to 70 of about 952,460 (194)

An Improved Bound for First-Fit on Posets Without Two Long Incomparable Chains

, 2012
It is known that the First-Fit algorithm for partitioning a poset P into chains uses relatively few chains when P does not have two incomparable chains each of size k. In particular, if P has width w then Bosek, Krawczyk, and Szczypka (SIAM J.
Bosek B., Chrobak M., David R. Wood, Downey R. G., Fijavž G., Gwenaël Joret, Kierstead H. A., Pemmaraju S. V., Vida Dujmović   +8 more
core   +1 more source

Nutrient addition, but not vertebrate predator exclusion, shapes arthropod communities and herbivory in a temperate forest

Ecological Entomology, EarlyView.
We experimentally manipulated top‐down (predator exclusion) and bottom‐up (fertilisation) forces in a temperate forest understory to test effects on arthropod densities, body sizes and herbivory. Predator exclusion had no detectable effect on arthropod density, herbivory damage or body size, whereas fertilisation increased herbivory damage and ...
Jan Kollross, Leonardo Re Jorge, Jakub Pawlik, Katerina Sam   +3 more
wiley   +1 more source

A series of (un)fortunate events: Commercial bank interest rates and deposit reallocation during the Great Depression in the Netherlands

The Economic History Review, EarlyView.
Abstract During the global economic crisis of 1929–33, deposits in the Dutch commercial banking sector sharply declined as funds shifted to the government‐guaranteed Post Office Savings Bank and other savings institutions. Unlike earlier studies for neighbouring countries, we demonstrate that this shift was driven less by a flight to safety and more by
Ruben Peeters, Amaury de Vicq de Cumptich   +1 more
wiley   +1 more source

A Theory of the Boundaries of Banks With Implications for Financial Integration and Regulation

Financial Management, EarlyView.
ABSTRACT We offer a theory of the “boundary of the firm” that is tailored to banks, recognizing the relevance of deposit financing and interbank lending as a substitute for integration. It is based on a single inefficiency that has been at the core of banking theory: risk‐shifting incentives in the interest of bank shareholders.
Falko Fecht, Roman Inderst, Sebastian Pfeil   +2 more
wiley   +1 more source

Skew Premiums Around Earnings Announcements

Financial Review, EarlyView.
ABSTRACT We examine skew premiums in equity options around earnings announcements. We use the realized returns to delta‐neutral risk reversal option spreads as a proxy for the skew premiums. We find skew premiums are economically significant around earnings announcements and are not explained by changes in variance risk premiums.
Thaddeus Neururer, George Papadakis
wiley   +1 more source

Attacking Graph Neural Networks with Bit Flips: Weisfeiler and Leman Go Indifferent

Proceedings of the 30th ACM SIGKDD Conference on Knowledge Discovery and Data Mining
Prior attacks on graph neural networks have mostly focused on graph poisoning and evasion, neglecting the network's weights and biases. Traditional weight-based fault injection attacks, such as bit flip attacks used for convolutional neural networks, do not consider the unique properties of graph neural networks.
Kummer, Lorenz, Moustafa, Samir, Schrittwieser, Sebastian, Gansterer, Wilfried, Kriege, Nils   +4 more
openaire   +4 more sources

Skiba points for small discount rates [PDF]

The present article uses perturbation techniques to approximate the value function of an economic minimisation problem for small values of the discount rate. This can be used to obtain the approximate location of Skiba states (or indifference thresholds)
Wagener, F.O.O.
core  

Do Human Rights Work? Evidence From Prison Death Investigations in Scotland

The Howard Journal of Crime and Justice, EarlyView.
ABSTRACT It seems self‐evident that countries which have embraced human rights would have better human rights compliance. This article examines this assumption in prison death investigations in Scotland (called fatal accident inquiries or FAIs). The right to life (Article 2 ECHR) includes a procedural right to an effective investigation of deaths ...
Sarah Armstrong, Betsy Barkas, Linda Allan, Deborah Russo   +3 more
wiley   +1 more source

Strategic Flip‐Flopping in Political Competition

International Economic Review, EarlyView.
ABSTRACT We study candidates' position adjustments in response to information about voters' preferences. Repositioning allows candidates to move closer to the median voter, but it incurs financial and electoral costs. In a subgame‐perfect equilibrium, candidates diverge from the center ex ante if the costs of adjustment are sufficiently large.
Gaëtan Fournier, Alberto Grillo, Yevgeny Tsodikovich   +2 more
wiley   +1 more source

Evaluating Allocations of Opportunities

International Economic Review, EarlyView.
ABSTRACT This paper provides a robust criterion for comparing lists of probability distributions—interpreted as allocations of opportunities—faced by different social groups. We axiomatically argue in favor of comparing those lists of probability distributions on the basis of a uniform—among groups—valuation of their expected utility.
Francesco Andreoli, Mathieu Faure, Nicolas Gravel, Tista Kundu   +3 more
wiley   +1 more source