Results 181 to 190 of about 9,950,038 (297)

Multi‐Objective Optimisation Framework for Heterogeneous Federated Learning

open access: yesCAAI Transactions on Intelligence Technology, EarlyView.
ABSTRACT Federated learning is a distributed framework that trains a centralised model using data from multiple clients without transferring that data to a central server. Despite rapid progress, federated learning still faces several unsolved challenges. Specifically, communication costs and system heterogeneity, such as nonidentical data distribution,
Jamshid Tursunboev   +4 more
wiley   +1 more source

Signal‐to‐noise and spatial resolution in in‐line imaging. 3. Optimization using a simple model

open access: yesJournal of Synchrotron Radiation, EarlyView.
Geometrical magnification and X‐ray energy are optimized with respect to spatial resolution, contrast, noise, radiation dose and other image quality characteristics. The optimization is performed using a simple theoretical model of a homogeneous edge feature embedded in a bulk uniform sample, and the resulting generic analytical expressions for image ...
Timur E. Gureyev   +2 more
wiley   +1 more source

A Structural Model of Mortgage Offset Accounts in the Australian Housing Market*

open access: yesEconomic Record, EarlyView.
I study a novel institutional feature of Australian housing markets: the widespread use of mortgage offset accounts. These accounts reduce mortgage interest costs and increase mortgage liquidity. I build a heterogeneous agent life‐cycle model of the Australian housing market to study who uses and benefits from these mortgage products.
James Graham
wiley   +1 more source

Estimating Causal Effects With Observational Data: Guidelines for Agricultural and Applied Economists

open access: yesJournal of Agricultural Economics, EarlyView.
ABSTRACT Most research questions in agricultural and applied economics are causal in nature: they study how changes in one or more variables (such as policies, prices or weather) affect one or more other variables (e.g., income, crop yields or pollution).
Arne Henningsen   +6 more
wiley   +1 more source

Asymmetric Platform Oligopoly

open access: yesThe RAND Journal of Economics, EarlyView.
ABSTRACT We propose a tractable model of asymmetric platform oligopoly with logit demand in which users from two distinct groups are subject to within‐group and cross‐group network effects and decide which platform to join. We characterize the equilibrium when platforms manage user access by setting participation fees for each user group.
Martin Peitz, Susumu Sato
wiley   +1 more source

Why Is Exclusivity in Broadcasting Rights Prevalent and Why Does Simple Regulation Fail?

open access: yesThe RAND Journal of Economics, EarlyView.
ABSTRACT Pay‐TV firms compete both downstream to attract viewers and upstream to acquire broadcasting rights. Because profits inherited from downstream competition satisfy a convexity property, allocating rights to the dominant firm maximizes the industry profit.
David Martimort, Jerome Pouyet
wiley   +1 more source

Efficient statistical inference of turning points in animal movement data

open access: yesMethods in Ecology and Evolution, EarlyView.
Abstract Recent years have seen a proliferation of high‐frequency animal movement data, often at greater than 1 Hz, allowing us to gain much greater insight into behaviour than with lower frequency data. In particular, it is becoming possible to detect the precise points at which animals are making decisions to turn, thus placing the idea that the ...
Abdulmajeed F. Alharbi   +5 more
wiley   +1 more source

Farmers' pro‐social motivations and willingness‐to‐accept in markets with public goods

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract To explain how some farmers' decisions may diverge from profit‐maximization, we incorporate proactive social preferences for public goods in an expected utility framework, in addition to reactive risk preferences to uncertainty. We offer empirical evidence that proactive preferences influence farmers' decisions alongside reactive preferences ...
Jill Fitzsimmons   +2 more
wiley   +1 more source

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