Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Giovanni M. Marchetti"'
Autor:
Giovanni M. Marchetti
Publikováno v:
Journal of Statistical Software, Vol 15, Iss 1, Pp 1-15 (2006)
We describe some functions in the R package ggm to derive from a given Markov model, represented by a directed acyclic graph, different types of graphs induced after marginalizing over and conditioning on some of the variables. The package has a few
Externí odkaz:
https://doaj.org/article/a197e2e9a2cd4563bff49bce6f955384
Publikováno v:
Biometrical Journal. 62:1564-1573
Tree-based models are a popular tool for predicting a response given a set of explanatory variables when the regression function is characterized by a certain degree of complexity. Sometimes, they are also used to identify important variables and for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f6c58c844ad5ba4cff6f82ae6f94c66a
https://doi.org/10.1002/bimj.201900195
https://doi.org/10.1002/bimj.201900195
Publikováno v:
Marine Pollution Bulletin. 169:112525
Awareness raising and public engagement are key steps towards the reduction of demand, use and pollution related to plastic in everyday life. However, people not already active in this respect, nor seeking information about, may remain excluded from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ecae8db3beb5d32e24115bda02ce1f2b
https://doi.org/10.1016/j.marpolbul.2021.112525
https://doi.org/10.1016/j.marpolbul.2021.112525
Autor:
Giovanni M. Marchetti, Diego Lercari, G. Zampicinini, Omar Defeo, Juan Pablo Lozoya, Francisco R. Barboza, Lucia Fanini, Costas S. Tsigenopoulos, Eleonora Celentano, Julio Gómez
Publikováno v:
Estuarine, Coastal and Shelf Science. 187:152-159
Life-history, substrate choice and Cytochrome Oxidase I (COI) sequences were analysed in populations of two peracaridans, the supralittoral talitrid Atlantorchestoidea brasiliensis and the intertidal cirolanid Excirolana armata. Three populations of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a86c69169aa1ab0a6bd8d3cfe6cef815
https://doi.org/10.1016/j.ecss.2017.01.007
https://doi.org/10.1016/j.ecss.2017.01.007
Autor:
Nanny Wermuth, Giovanni M. Marchetti
Publikováno v:
Stat. 6:282-291
Cyclic models are a subclass of graphical Markov models with simple, undirected probability graphs that are chordless cycles. In general, all currently known distributions require iterative procedures to obtain maximum likelihood estimates in such cy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3544508813bd0e015734f0ef456589c4
https://doi.org/10.1002/sta4.155
https://doi.org/10.1002/sta4.155
Publikováno v:
PLoS ONE
PLoS ONE, Vol 12, Iss 8, p e0181305 (2017)
PloS one 12 (2017): 1–20. doi:10.1371/journal.pone.0181305
info:cnr-pdr/source/autori:Lombardi S.; Santini G.; Marchetti G.M.; Focardi S./titolo:Generalized structural equations improve sexual-selection analyses/doi:10.1371%2Fjournal.pone.0181305/rivista:PloS one/anno:2017/pagina_da:1/pagina_a:20/intervallo_pagine:1–20/volume:12
PLoS ONE, Vol 12, Iss 8, p e0181305 (2017)
PloS one 12 (2017): 1–20. doi:10.1371/journal.pone.0181305
info:cnr-pdr/source/autori:Lombardi S.; Santini G.; Marchetti G.M.; Focardi S./titolo:Generalized structural equations improve sexual-selection analyses/doi:10.1371%2Fjournal.pone.0181305/rivista:PloS one/anno:2017/pagina_da:1/pagina_a:20/intervallo_pagine:1–20/volume:12
Sexual selection is an intense evolutionary force, which operates through competition for the access to breeding resources. There are many cases where male copulatory success is highly asymmetric, and few males are able to sire most females. Two main
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::517be41f84c7009eac23a78b0624b244
http://hdl.handle.net/2158/1109261
http://hdl.handle.net/2158/1109261
Publikováno v:
Journal of Multivariate Analysis. 130:252-260
We introduce families of jointly symmetric, binary distributions that are generated over directed star graphs whose nodes represent variables and whose edges indicate positive dependences. The families are parametrized in terms of a single parameter.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1aa69d2793b9d443478fad2c5b94df7
https://doi.org/10.1016/j.jmva.2014.05.010
https://doi.org/10.1016/j.jmva.2014.05.010
Autor:
Nanny Wermuth, Giovanni M. Marchetti
Publikováno v:
Electron. J. Statist. 10, no. 2 (2016), 2435-2460
We introduce and study a subclass of joint Bernoulli distributions which has the palindromic property. For such distributions the vector of joint probabilities is unchanged when the order of the elements is reversed. We prove for binary variables tha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dcab230210591e93ed2e762bd64788bf
https://projecteuclid.org/euclid.ejs/1473276076
https://projecteuclid.org/euclid.ejs/1473276076
Publikováno v:
Ecological Indicators. 9:167-178
For decades beach nourishment and groyne building have been used to combat sandy beach erosion, but their effects on sandy beach macrofauna are often neglected. Here, we analysed the effects of beach nourishment and groyne building on a sandy beach w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79a08429bf56694c18a7624364ca57d4
https://doi.org/10.1016/j.ecolind.2008.03.004
https://doi.org/10.1016/j.ecolind.2008.03.004
Publikováno v:
Statistics & Probability Letters. 78:824-829
We explore the effects of truncation on the joint distribution of the observable random variables. A general formula for the distortion induced by truncation in the least-squares coefficients is presented. The implications of our derivations are illu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7e8df3481e11aacb0ef768604bb6a01b
https://doi.org/10.1016/j.spl.2007.09.050
https://doi.org/10.1016/j.spl.2007.09.050