Results 251 to 260 of about 9,161 (293)
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Selective Logging in the Brazilian Amazon
Science, 2005Amazon deforestation has been measured by remote sensing for three decades. In comparison, selective logging has been mostly invisible to satellites. We developed a large-scale, high-resolution, automated remote-sensing analysis of selective logging in the top five timber-producing states of the Brazilian Amazon.
Gregory P, Asner +5 more
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Strategies for the Selection of Log-Linear Models
Biometrics, 1978In a multidimensional contingency table strategies have been proposed to build log-linear models using either stepwise methods or standardized estimates of the parameters of the saturated model. Brown (1976) proposed a two-step procedure to screen effects and then test a subset of models.
Benedetti, Jacqueline K. +1 more
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Impacts of selective logging management on butterflies in the Amazon
Biological Conservation, 2018 Selective logging for timber production affects vast areas across the tropics, yet we lack detailed understanding of the impacts of logging intensity on biodiversity. These impacts can be studied at two levels: the impacts of logging intensity on overall
Gabriela Montejo-Kovacevich +2 more
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Table selection and log-linear models
Journal of Chronic Diseases, 1980Abstract The use of multi-dimensional contingency tables has become commonplace in the analysis of epidemiological data. This paper examines two problems in this methodology. First, for data having many response or dependent variables, it is often unclear as to which of many possible tables should be analyzed.
D H, Freeman, J F, Jekel
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Bayesian selection of log‐linear models
Canadian Journal of Statistics, 1996AbstractA general methodology is presented for finding suitable Poisson log‐linear models with applications to multiway contingency tables. Mixtures of multivariate normal distributions are used to model prior opinion when a subset of the regression vector is believed to be nonzero.
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Journal of Petroleum Technology, 1950
Abstract An earlier paper on the general subject of the SP log has analyzed thelimitations of that log, in particular when dealing with thin permeable bedsenclosed in thick highly resistive ones. Under such conditions, the SP log doesnot give a good definition of the permeable beds.
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Abstract An earlier paper on the general subject of the SP log has analyzed thelimitations of that log, in particular when dealing with thin permeable bedsenclosed in thick highly resistive ones. Under such conditions, the SP log doesnot give a good definition of the permeable beds.
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Wrappers for web access logs feature selection
Proceedings of the 2nd International Conference on Web Intelligence, Mining and Semantics, 2012The Web Usage Mining (WUM), a rather recent research field, corresponds to the process of knowledge discovery from databases (KDD) applied to the Web usage data. The quantity of the Web usage data to be analyzed and its poor quality (in particular the abundance of features to be analyzed) are the main problems in WUM.Considering the characteristics of ...
Maria Muntean, Honoriu Valean
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Bandwidth selection for kernel log-density estimation
Computational Statistics & Data Analysis, 2016zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Martin L. Hazelton, Murray P. Cox
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Generalized Selection Combining Based on the Log-Likelihood Ratio
IEEE Transactions on Communications, 2004We propose a generalized selection combining (GSC) scheme for binary signaling in which a subset of diversity branches providing the largest magnitude of log-likelihood ratio (LLR) are selected and combined. It is shown that the bit-error probability with maximum ratio combining (MRC) or square-law combining of L branches is identical to that with LLR ...
Sang Wu Kim +2 more
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Vertebrate responses to selective logging: implications for the design of logging systems
Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences, 1992Abstract The adoption of tropical rain forest management systems that conserve both timber stocks and the environment is increasingly viewed as a necessary development to maintain both the tropical timber trade and the forests themselves. There are no theoretical reasons why such systems should not be achievable. Ecological studies of
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