Results 71 to 80 of about 448,512 (202)

CBDC as Imperfect Substitute to Bank Deposits: A Macroeconomic Perspective

Journal of Money, Credit and Banking, EarlyView.
Abstract The impact of Central Bank Digital Currency (CBDC) is analyzed in a closed‐economy model with monopolistic competition in banking and where CBDC is an imperfect substitute with bank deposits. The design of CBDC is characterized by its interest rate, its substitutability with bank deposits, and its relative liquidity.
PHILIPPE BACCHETTA, ELENA PERAZZI
wiley   +1 more source

Implementing Nonmonotonic Reasoning From Weakly Consistent Conditional Belief Bases

Proceedings of the International Florida Artificial Intelligence Research Society Conference
In this paper, we develop implementations of nonmonotonic reasoning from conditional belief bases that may contain both defeasible and undefeasible, strict beliefs.
Christoph Beierle, Aron Spang, Lars-Phillip Spiegel, Jonas Haldimann   +3 more
doaj  

When indemnity insurance fails: Parametric coverage under binding budget and risk constraints

Journal of Risk and Insurance, EarlyView.
Abstract In high‐risk environments, traditional indemnity insurance is often unaffordable or ineffective, despite its well‐known optimality under expected utility. We compare excess‐of‐loss indemnity insurance with parametric insurance within a common mean‐variance framework, allowing for fixed costs, heterogeneous premium loadings, and binding budget ...
Benjamin Avanzi, Debbie Kusch Falden, Mogens Steffensen   +2 more
wiley   +1 more source

Parametric Time‐Variation in the Unconditional Volatility: Estimation and Inference

Journal of Time Series Analysis, EarlyView.
ABSTRACT We propose modeling time‐variation in the unconditional volatility by augmenting the standard GARCH model by a deterministic time‐varying intercept. The model, called the additive time‐varying (ATV‐)GARCH model, can be interpreted as a reduced form of a model including covariates and can be derived from a multiplicative decomposition of ...
Niklas Ahlgren, Alexander Back, Timo Teräsvirta   +2 more
wiley   +1 more source

Robust Mean–Variance Portfolio Optimization: Mean–Variance–Variance Criterion Versus Mean–Variance–Standard Deviation Criterion

Mathematical Finance, EarlyView.
ABSTRACT We study a dynamic portfolio optimization problem under the mean–variance–variance (M‐V‐V) criterion proposed by Maccheroni et al. It is an analogue of the Arrow–Pratt approximation to the well‐known smooth ambiguity model. Under the standard Black–Scholes framework, we derive fully explicit equilibrium investment strategies in which a DM's ...
David Landriault, Bin Li, Yuanyuan Zhang
wiley   +1 more source

Nonmonotonic Reasoning forAdaptive Information Filtering

, 2001
The general goal of information retrieval (IR) and information filtering (IF) is to dispatch relevant information objects to a user with respect to his/her specific information need.
Lau, Raymond, Bruza, P. D., Bruza, Peter, Lau, R., ter Hofstede, Arthur, Ter Hofstede, A. H.M.   +5 more
core   +1 more source

Normative benchmarks are useful for studying individual differences in reasoning [PDF]

, 2011
We applaud many aspects of Elqayam & Evans' (E&E's) call for a descriptivist research programme in studying reasoning. Nevertheless, we contend that normative benchmarks are vital for understanding individual differences in performance. We argue that the
Stupple, Edward J. N., Linden J. Ball, Ball, Linden J., Stupple, Edward, Ball, Linden, Edward J. N. Stupple   +5 more
core   +1 more source

View Order With Arbitrary Center Echoes

Magnetic Resonance in Medicine, Volume 96, Issue 5, Page 2127-2139, November 2026.
ABSTRACT Purpose To provide explicit, vendor‐independent view‐order constructions that enable selection of an arbitrary center echo in multi‐shot imaging, with a focus on RARE and MPRAGE. Methods Vendor‐independent view‐order methods were developed to assign echo and shot indices to a prescribed set of phase encodes, enabling explicit selection of the ...
Henric Rydén, Ola Norbeck, Sophie Schauman, Mikael Skorpil, Adam van Niekerk   +4 more
wiley   +1 more source

A Compositional Reasoning System for Executing Nonmonotonic Theories of Reasoning

, 2003
In this paper the framework DESIRE for the design of compositional reasoning systems and multi-agent systems was applied to build a generic nonmonotonic reasoning system.
J. Engelfriet, Engelfriet, J., J. Treur, Treur, J., Treur, J.; id_orcid   +4 more
core   +1 more source

Stochastic Gradient Descent in High Dimensions for Multi‐Spiked Tensor PCA

Communications on Pure and Applied Mathematics, Volume 79, Issue 10, Page 2291-2369, October 2026.
ABSTRACT We study the high‐dimensional dynamics of online stochastic gradient descent (SGD) for the multi‐spiked tensor model. This multi‐index model arises from the tensor principal component analysis (PCA) problem with multiple spikes, where the goal is to estimate the unknown signal vectors within the N$N$‐dimensional unit sphere through maximum ...
Gérard Ben Arous, Cédric Gerbelot, Vanessa Piccolo   +2 more
wiley   +1 more source