1,720,955 research outputs found
Interpretable clustering of PS-InSAR time series for ground deformation detection
No full textPersistent Scatterer Interferometry Synthetic Aperture Radar (PS-InSAR) provides high-precision ground deformation measurements over wide areas. However, analyzing PS time series remains challenging due to complex temporal patterns and the need to consider comprehensive displacement fields to fully characterize ground deformation processes. This study evaluates and compares unsupervised clustering approaches for PS time series analysis, contrasting feature extraction techniques against raw time series methods. We developed an online optimization algorithm for cluster number determination and introduced a custom density-based score (MLRD) for evaluating clustering quality in sparse geospatial datasets. The approaches were tested on Sentinel-1-derived PS data from the landslide-prone Offida municipality (Marche region, Italy), where feature-based methodologies demonstrated superior performance, achieving improvements of one to two orders of magnitude in clustering quality metrics compared to conventional approaches. The multivariate analysis notably outperformed univariate methods, with optimal MLRD (2.59⋅10−5) and Calinski–Harabasz scores (194.73) at 50% explained variance, while preserving the physical interpretability of the results. This comprehensive analysis identified coherent deformation clusters extending beyond previously mapped landslide boundaries, demonstrating the effectiveness of multivariate clustering in detecting potentially unstable areas. This methodological framework advances PS time series analysis through robust pattern recognition while enhancing geohazard assessment capabilities, offering a robust foundation for identifying unstable areas and providing quantitative support for improving our understanding of complex ground deformation mechanisms
Interpretable Entity Matching with WYM
Get PDFThis paper introduces WYM (Why do You Match?), an intrinsically explainable model designed for Entity Matching (EM). WYM is built upon decision units, which are basic information units formed by either pairs of similar terms belonging to different entity descriptions, or unique terms present in only one of the descriptions. Decision units enable the definition of a new feature space that can compactly and meaningfully represent pairs of entity descriptions. By training an explainable binary classification model on these features, WYM generates customized and effective explanations for EM datasets
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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