1,721,000 research outputs found
layeranalyzer v0.1.0
No full text<p>This is an R package for causal and correlative time series analysis with hidden layers, using linear stochastic differential equations. The project's Github page is https://github.com/trondreitan/layeranalyzer.</p>
<p>In addition to the R package itself, this page presents the C++ code (used in a standalone program as well as the R package), documentation and example datasets and code for multi-layered analysis using vectorial linear stochastic differential equations. The reason for using stochastic differential equation is to facilitate studying irregularly spaced observations like those we find in our study dataset of micro-fossils. This work was performed in conjuction with doing the research for and writing the manuscript "Phenotypic Evolution studied by Layered Stochastic Differential Equations" by T. Reitan, T. Schweder and J. Henderiks.</p>
<p>Originally, this was used for modelling phenotypic evolution towards a optima that itself could be a stochastic process depending responding to layers below it (climate or primary optimum). However, the method have be used for other applications as well.</p>
<p>Code:</p>
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<p>The R package, layeranalyzer_0.1.0.tar.gz, uses the same underlying C++ code (layeranalyzer.cpp). It can be installed with the R code: install.packages("<a href="https://github.com/trondreitan/layeranalyzer/raw/master/layeranalyzer_0.1.0.tar.gz%22,type=%22source">https://github.com/trondreitan/layeranalyzer/raw/master/layeranalyzer_0.1.0.tar.gz",type="source</a>") or install_github(repo="trondreitan/layeranalyzer",dependencies=FALSE,build_vignettes=TRUE) if devtools is installed.</p>
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<p>layeranalyzer.cpp. This is the current source version of the program. This version does not depend on any library but the Lapack library (for linear algebra operations), which typically can be found in an R installation. The program can then typically be compiled on a Linux machine like this: "g++ -DMAIN -DENGLISH_LANGUAGE -I/usr/include/R -I/usr/include/R/R_ext -o layeranalyzer layeranalyzer.cpp -lm -llapack". If the Lapack library files or header files are somewhere else on your computer, you should change the "-I" (which tells the compiler where to look for header files) and "-L" (which tells the compiler where to search for library files other than in the /usr/lib directory). This has already been tested on multiple platforms. See "help" texts on Github for more on usage.</p>
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RAMO-MSOM: Relative Abundance estiMation with Unidentified individuals using Multi-Species Occupancy Modelling
No full textThis Zenodo publication contains the necessary R scripts and data files to run our analyses on our empirical dataset associated with the manuscript “Estimating relative species abundance using fossil data identified to different taxonomic levels”. It will also allow the same analyses to be done on other similarly structured datasets, which we call RAMU-MSOM (short for Relative Abundance estiMation with Unidentified individuals using Multi-Species Occupancy Modelling)), to be done on other similarly structured datasets.
Within this folder, we provide two subfolders with empirical data (zipped format), two subfolders containing code for the two sets of simulations described in the manuscript and a subfolder with extra data and scripts files for a part of the empirical study presented only in the supplementary information of the manuscript. MCMC files are provided separately
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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