Results 1 to 10 of about 3,510,286 (148)
Parametric matrix models [PDF]
Nature CommunicationsWe present a general class of machine learning algorithms called parametric matrix models. In contrast with most existing machine learning models that imitate the biology of neurons, parametric matrix models use matrix equations that emulate physical ...
Patrick Cook +4 more
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Matrix models at large charge [PDF]
Journal of High Energy Physics, 2017 We show that the large-charge formalism can be successfully applied to models that go beyond the vector models discussed so far in the literature. We study the explicit example of a conformal SU(3) matrix model in 2+1 space-time dimensions at fixed ...
Orestis Loukas +2 more
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Universe, 2017 We propose a hybrid class of theories for higher spin gravity and matrix models, i.e., which handle simultaneously higher spin gravity fields and matrix models.
Mauricio Valenzuela
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The formal demography of kinship V: Kin loss, bereavement, and causes of death [PDF]
Demographic Research, 2023 BACKGROUND: The loss of kin by death has medical, psychological, and social effects on other members of a kinship network. Recent formal demographic models can account for deaths of kin, but not causes of those deaths.
Hal Caswell +2 more
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Animals, 2023 The European hedgehog is in decline, triggering a need to monitor population dynamics to optimise conservation initiatives directed at this species.
Sophie Lund Rasmussen +3 more
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The formal demography of kinship IV: Two-sex models and their approximations
Demographic Research, 2022 Background: Previous kinship models analyze female kin through female lines of descent, neglecting male kin and male lines of descent. Because males and females differ in mortality and fertility, including both sexes in kinship models is an important ...
Hal Caswell
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The effect of habitat transformation on a twig epiphytic orchid: Evidence from population dynamics
Frontiers in Ecology and Evolution, 2023 The tropical Andean landscape has been dramatically transformed over the last century with remaining native forest limited to small fragments within a heterogeneous matrix of crops, cattle pastures, and urban environments.
Nhora Helena Ospina-Calderón +4 more
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The formal demography of kinship II: Multistate models, parity, and sibship
Demographic Research, 2020 Background: Recent kinship models focus on the age structures of kin as a function of the age of the focal individual. However, variables in addition to age have important impacts.
Hal Caswell
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From biodiversity to health: Quantifying the impact of diverse ecosystems on human well‐being
People and Nature, 2023 Ample evidence suggests positive effects of species diversity on ecosystem functioning and services in natural and agricultural landscapes. Less obvious and even contested are the effects of such diversity on human well‐being.
Werner Ulrich +13 more
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, 1995 The star-matrix models are difficult to solve due to the multiple powers of the Vandermonde determinants in the partition function. We apply to these models a modified Q-matrix approach and we get results consistent with those obtained by other methods ...
Vinteler, E.
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