1,720,956 research outputs found
Making Automatic Movement Features Extraction Suitable for Non-engineer Students
No full textAnalysis of movement expression is a multidisciplinary research domain, that exploits the contributions from a wide variety of research fields, ranging from biomedical, computer science and robotic engineering, moving through psychology, to dance and performing arts. That is why there is the need to make tools also accessible to students and researchers with a non-technical background to foster their insights and facilitate their contribution. Since corpora are usually multi-modal, when they come as motion capture (MoCap) data, they could be quite difficult to analyze and annotate by people with a non-technical background. Therefore, the present work shows the prototype of a software tool that collects a library of algorithms, to process raw MoCap data. The tool allows the user to extract movement features through an easy workflow, interacting with a user-friendly graphical interface (GUI). The GUI usability has been preliminary user-tested with participants having different expertise in human movement features extraction. During the execution of three tasks, users' attitudes have been collected to assess GUI's ease of use and we found that it is perceived as a useful tool, but it requires basic previous knowledge to be fully understood
Let's Play: Early Explorations of Child-Caregiver Embodied Interactions
No full textWe report on the initial design steps of an audio-visual installation to be set up in a hospital guest house for children and their caregivers. The goal of the project is twofold: on one hand we aim to design a playful experience which can support children physical activity and their communication skills. On the other, we intend to develop an automated tool to assess a few basic qualities of child-caregiver interaction by interpreting users' upper-body motion. We focus on the early stages of the project, situating it in the context of a collaboration between two institutions: an HCI lab and a paediatric hospital. We describe our efforts for the identification of a suitable dyadic activity to be first analysed using motion capture techniques and later augmented with audio-visual feedback. We also outline the strategies identified for the evaluation of the automated measurements of embodied child-caregiver interactions. Finally, we present two basic prototypes developed to stimulate a hands-on debate within our research team on the project's design challenges and outcomes
Few Labels are Enough! Semi-supervised Graph Learning for Social Interaction
No full textEndowing machines with social intelligence is a fundamental goal of artificial social intelligence. Dealing with human-centered phenomena requires, however, a considerable amount of manually annotated data, making data annotation a costly and challenging task that hinders the training of supervised learning algorithms. In this study, we apply an approach grounded on Graph Convolutional Network (GCN) to alleviate the annotation burden. As a test bed, we select emergent states analysis with specific reference to the team potency. At first, we build the POTENCY dataset by fusing three datasets on social interaction. Next, we compute a set of multimodal features characterizing the social behavior of the team members and the team as one. Finally, we feed the POTENCY dataset to a semi-supervised GCN, trained on a binary node classification task, with variable amounts of labels. We show that GCN can assign team potency labels to an unlabeled team in the dataset by using only a few labeled examples (i.e., 10% of data), with performances comparable to or higher than those of two baseline algorithms carrying out the same task in a fully supervised way
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
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
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
- …
