1,721,064 research outputs found
Terry Gaasterland
No full textThis paper describes an approach that uses methods for automated sequence analysis [GLMC94] and multiple databases accessed through an object+attribute view of the data [BDG + 92], together with metabolic pathways, reaction equations, and compounds parsed into a logical representation from the Enzyme and Metabolic Pathway Database [SYet.al.94], as the sources of data for automatically reconstructing a weighted partial metabolic network for a prokaryotic organism. Additional information can be provided interactively by the expert user to guide reconstruction. 1 Introduction As available genome sequence data for microbial organisms increases both in the amount of data for individual organisms and in the number of organisms with data, we ask: how much of an organism's metabolic structure can be pieced together using sequence evidence, knowledge about metabolism, and encoded metabolic pathways? How much of this process can be automated? How can the resulting tool be used to help people ..
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
Making Discoveries that Transform Science
Get PDFWritten and designed by the Office of Communications and Public Affairs for The Rockefeller University, this publication spotlights pathbreaking research of a few of the university\u27s 75 major laboratories: Roderick MacKinnon, Maria Karayirgou, Elaine Fuchs, Jan Breslow Jeffrey Friedman, Markus Stoffel, Terry Gaasterland, Madhav Dhodapkar, Marry Hatten, Nathaniel Heintz, and Tom Muir.https://digitalcommons.rockefeller.edu/making-discoveries/1000/thumbnail.jp
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
Cooperative Explanation in Deductive Databases
No full textthis paper, we will discuss two mechanisms to augment an initial logic formula which has been produced by the basic cooperative answering system of Gal. The first mechanism ensures that each piece of cooperative information in the formula is properly motivated. If cooperative information is not linked to the original query in some way, it can be surprising to the user. Further information which links the cooperative information to the user's query can be found in the search tree and incorporated into the logic formula. The second mechanism lets the user guide the presentation of the response. The user may only be interested in parts of the collected cooperative information; after seeing part of the extra information, the user may want to see more. A mechanism to "query" the cooperative logic formula allows it to be presented as the user desires. Finally, we briefly mention some of the transformations that we have developed to organize the logic formula and prepare it for natural language generation. In addition, we provide a chart that details the sources and uses of cooperative information available in a deductive database system. 2 Definition
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