Multinomial Principal Component Logistic Regression on Shape Data

Moghimbeygi, Meisam; Nodehi, Anahita

doi:10.1007/s00357-022-09423-x

Cited by 6 publications

(2 citation statements)

References 48 publications

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“…We computed Multinomial Principal Component Logistic Regression (MLR) models (Moghimbeygi & Nodehi, 2022), in order to estimate the morphological affinities of the specimens of our study group with the groups of the comparative sample. As a multinomial logistic regression, MLR is used to classify several possible outcomes, that is, the different groups of our comparative sample, using predictor variables, that is, the PC scores and the residuals from the linear regression of the PC scores on the natural logarithm of the centroid size of the specimens.…”

Section: Discussionmentioning

confidence: 99%

Quantifying hominin morphological diversity at the end of the middle Pleistocene: Implications for the origin of Homo sapiens

Hautavoine,

Arnaud,

Balzeau

et al. 2024

American Journal of Biological Anthropology

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ObjectivesThe Middle Pleistocene (MP) saw the emergence of new species of hominins: Homo sapiens in Africa, H. neanderthalensis, and possibly Denisovans in Eurasia, whose most recent common ancestor is thought to have lived in Africa around 600 ka ago. However, hominin remains from this period present a wide range of morphological variation making it difficult to securely determine their taxonomic attribution and their phylogenetic position within the Homo genus. This study proposes to reconsider the phenetic relationships between MP hominin fossils in order to clarify evolutionary trends and contacts between the populations they represent.Materials and MethodsWe used a Geometric Morphometrics approach to quantify the morphological variation of the calvarium of controversial MP specimens from Africa and Eurasia by using a comparative sample that can be divided into 5 groups: H. ergaster, H. erectus, H. neanderthalensis, and H. sapiens, as well as individuals from current modern human populations. We performed a Generalized Procrustes Analysis, a Principal Component Analysis, and Multinomial Principal Component Logistic Regressions to determine the phenetic affinities of the controversial Middle Pleistocene specimens with the other groups.ResultsMP African and Eurasian specimens represent several populations, some of which show strong affinities with H. neanderthalensis in Europe or H. sapiens in Africa, others presenting multiple affinities.DiscussionThese MP populations might have contributed to the emergence of these two species in different proportions. This study proposes a new framework for the human evolutionary history during the MP.

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Section: Discussionmentioning

confidence: 99%

Quantifying hominin morphological diversity at the end of the middle Pleistocene: Implications for the origin of Homo sapiens

Hautavoine,

Arnaud,

Balzeau

et al. 2024

American Journal of Biological Anthropology

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“…(2020), Dadakas and Tatsi (2021), Heng et al . (2023), Moghimbeygi and Nodehi (2022), Trinh et al . (2021) and Zhang et al.…”

Section: Methodology and Datamentioning

confidence: 99%

Natural disasters and agricultural trade in China: analyzing the role of transportation, government and diplomacy

Zhao,

Cheng,

Chai

2024

CAER

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PurposeNatural disasters profoundly influence agricultural trade sustainability. This study investigates the effects of natural disasters on agricultural production imports in China within 2002 and 2018. This exploration estimates the mediating role of transportation infrastructure and agriculture value-added and the moderating role of government effectiveness and diplomatic relations.Design/methodology/approachThis investigation uses Probit, Logit, Cloglog and Ordinary Least Squares (OLS) models.FindingsThe results confirm the mediating role of transportation infrastructure and agriculture value-added and the moderating role of government effectiveness and diplomatic relations in China. According to the findings, natural disasters in trading partners heighten the risk to the agricultural imports. This risk raises, if disasters damage overall agricultural yield or transportation infrastructure. Moreover, governments’ effective response or diplomatic ties with China mitigate the risk. Finally, the effect of disasters varies by the developmental status of the country involved, with events in developed nations posing a greater risk to China’s imports than those in developing nations.Originality/valueChina should devise an early warning system to protect its agricultural imports by using advanced technologies such as data analytics, remote sensing and artificial intelligence. In addition, it can leverage this system by improving its collaboration with trading partners, involvement in international forums and agreement for mutual support in crisis.

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Effect of cement type and water-to-cement (w/c) ratio on characteristics of lightweight mortars produced with pumice: a comparative study on calcium aluminate (rapid hardening) and ordinary Portland cements

Nodehi,

Gencel,

Erdogmus

et al. 2024

Innov. Infrastruct. Solut.

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Multinomial Principal Component Logistic Regression on Shape Data

Cited by 6 publications

References 48 publications

Quantifying hominin morphological diversity at the end of the middle Pleistocene: Implications for the origin of Homo sapiens

Quantifying hominin morphological diversity at the end of the middle Pleistocene: Implications for the origin of Homo sapiens

Natural disasters and agricultural trade in China: analyzing the role of transportation, government and diplomacy

Effect of cement type and water-to-cement (w/c) ratio on characteristics of lightweight mortars produced with pumice: a comparative study on calcium aluminate (rapid hardening) and ordinary Portland cements

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