1,721,022 research outputs found
Predicting Human Interactive Learning by Regret-Driven Neural Networks
Full text linkMuch of human learning in a social context has an interactive nature: What an individual learns is affected by what other individuals are learning at the same time. Games represent a widely accepted paradigm for representing interactive decision-making. We explored the potential value of neural networks for modeling and predicting human interactive learning in repeated games. We found that even very simple learning networks, driven by regret-based feedback, accurately predict observed human behavior in different experiments on 21 games with unique equilibria in mixed strategies. Introducing regret in the feedback dramatically improved the performance of the neural network. We show that regret-based models provide better predictions of learning than established economic models
Roadmap to Challenges in Limited Cellularity Specimens from Pancreatic Neuroendocrine Neoplasms: Diagnostic Tools for the Most Appropriate Management of Limited Material
No full textFine needle aspiration (FNA) and fine needle biopsy (FNB) procedures are increasingly employed in the diagnostic work-up of pancreatic masses. These procedures represent a challenge for pathologists who have to adapt to handling specimens of limited cellularity. In several cases, FNA and FNB specimens are the only available material, as many pancreatic neoplasms are surgically unresectable at the time of the initial diagnosis. In the present review paper, the diagnosis of pancreatic neuroendocrine neoplasms in limited cellularity specimens is presented using a morphology-based approach. The aim is to provide a practical guide for pathologists to select the most appropriate ancillary techniques to be used for the diagnostic work-up, while conserving precious material. The integration of morphology, immunohistochemistry, and molecular biology will be discussed to provide the reader with practical tools to solve the main differential diagnostic problems encountered in routine practice when working with cytological samples or small biopsies
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Constructing shared interpretations in a team of intelligent agents: the effects of communication intensity and structure
No full textA case of multicentric Castleman's disease mimicking non-Hodgkin lymphoma: when splenectomy is diagnostic and therapeutic
No full textPelvic floor rehabilitation for continence recovery after radical prostatectomy: Role of a personal training re-educational program
No full textPurpose: radical prostatectomy (RP) is affected by urinary incontinence (UI) that, even if temporary, can severely impact patients quality of life. We investigated if a post surgery tutored and personal trained pelvic floor re-educational program improves continence recovery more than pelvic floor exercises performed by patients on their own. Patients and Methods: 332 incontinent (>1 pad/daily) patients (pts) submitted to RP between 2006 and 2008 were prospectively randomized in group A (166 pts) and group B (166 pts). The first group performed an intensive tutored pelvic training program and the second formed the control group. The follow-up was at one year and the self report of recovery of continence was measured every 3, 6 and 12 months. Results: the median time of continence recovery in group A was 44±2 days, while in group B it was 76±4 days. Patients enrolled in the pelvic floor re-educational dedicated program (group A) achieved continence earlier than the control group (group B). In fact, the number of incontinent patients at the different follow-up intervals was higher for the control group than for the treatment group. Conclusion: We have demonstrated that a post RP personal training program of pelvic muscle re-education supported by a physician and nurses expert in continence disorders have a benefit in future continence
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe 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
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