1,720,954 research outputs found
Clasificación translingue para la detección de depresión en usuarios de twitter
Get PDFDepression is a mental disorder with strong social and economic implications. The symptoms of this disorder are closely related to the conduct and the way of expressing of the people who suffer it. In recent years, social media had become in a popular media where people share their feelings. Recently several works have explored the analysis of social media content to identify and track depressed users following a supervised learning strategy supported on the availability of labeled training data. Unfortunately, acquiring such data is very complex and costly. To handle this problem and based on the idea that despite of their cultural diversity, people with depression tend to share similar information and to express in an analogous way, this investigation proposes a crosslingual approach based on the idea that data already labeled in a specific language can be leveraged to classify depression in other languages. The proposed method is based on a word-level alignment process. Particularly, we propose two representations for the alignment; whose capture correspondences between languages. For evaluating the proposed approach, we faced the detection of depression by employing English and Spanish tweets as the source and target data respectively. After a first attempt at classification, a second stage of re-labeling is proposed. It uses the labels thrown by the first classifier, next submits them to a refining process based on word dictionaries to generate a new training set and subsequently build a new classifier. The results outperformed solutions based on automatic translation of texts, confirming the usefulness of the proposed approach. Also it shows the usefulness of the dictionaries in the re-labeling stage and how this can inuence to improve the label of the data.La depresión es un desorden mental con fuerte impacto en la vida social y económica de las personas. Los síntomas que presentan las personas que la padecen están relacionados con su comportamiento diario incluyendo la forma en la que se expresan. En los últimos añnos, las redes sociales han sido un medio a través del cual las personas comparten sus sentimientos y estados de ánimo. Esto ha propiciado el desarrollo de varias investigaciones, las cuales han explorado el análisis del contenido de las redes sociales para identificar usuarios con depresión. Todas ellas siguiendo una estrategia de aprendizaje supervisado soportado en la disponibilidad de los datos etiquetados para el entrenamiento. Desafortunadamente, el proceso de recolectar y etiquetar datos para el entrenamiento es muy complejo y costoso. Motivados por este problema, y basados en la idea de que a pesar de las diferencias entre lenguajes las personas que padecen de depresión comparten y expresan información similar, en este trabajo, se propone un enfoque translingue basado en la idea de que los datos etiquetados ya existentes en un idioma específico, pueden ser aprovechados para detectar depresión en otros idiomas. El método propuesto está basado en un proceso de alineación a nivel de palabra. Particularmente se proponen dos representaciones, las cuales permiten capturar la correspondencia entre ambos idiomas. Para evaluar el enfoque propuesto, fueron utilizados Tweets en inglés y español como los datos fuente y objetivo respectivamente. Después de una primera etapa de clasificación, se propone una segunda etapa de re-etiquetado con el objetivo de mejorar las etiquetas de clase de cada documento. Este proceso de re-etiquetado usa las etiquetas asignadas por el primer clasificador, las somete a un proceso de refinación basado en diccionarios de palabras para generar un nuevo conjunto de entrenamiento, y posteriormente construir un nuevo clasificador. Los resultados obtenidos superan la solución basada en la traducción automática de textos, confirmando la utilidad del enfoque propuesto. Mostrando además el beneficio de los diccionarios en la etapa de re-etiquetado y su inuencia en el mejoramiento de las etiquetas de los datos
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
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