1,720,957 research outputs found
Peer Matching Tool
No full textMassive open online courses (MOOCs) all around the world are growing in size. Therefore, the practical assignments needs to be easy to manage. The growth also means that it is more difficult for participants to find a possible practical partner due to the large amount of people. The difficulty is also affected by the fact that students do not see each other during courses, and most of the time haven’t met any of the participants from the course. For this Bachelor Project we have improved upon this process by creating an application that can be used to create practical groups without the participants being required to search intensively through all the participants. Participants are able to easily access the application, fill in some relevant information about themselves and then get recommendations of possible practical partners or practical groups. We have divided the project in three phases: \u95 Research and set-up (phase 1) \u95 Design and implementation (phase 2) \u95 Testing, documentation and presentation (phase 3) Each of these phases describes the things that needed to be done during that phase. During the implementation phase we used a known software development framework. This develop- ment framework is known as scrum. Scrum is based on the agile software development framework which can be used to manage software projects. We use the Play framework for development of the application. The Play framework gives us the possibility to easily create a web application using Java. This frameworks follows the Model View Controller (MVC) architectural pattern applied to the Web architecture. For our recommendation algorithm we used our custom designed algorithm. This algorithm uses the skills defined by the user and the teacher to find the best recommendation with the preferences of the teacher. Creating code with good quality, maintainability and extendability of the system was important during the project. We achieved this using several tools, like Findbugs and Checkstyle. Another important aspect of the project was testing the code. We have performed different kind of tests to ensure good functioning code, to ensure everything is functioning appropriately. For the maintenance of our code we uploaded our code to the Software Improvement Group (SIG) and received an above average rating. During the implementation phase, we already started with testing. Because the system was not com- pleted during this phase, only parts of the system could be tested. We performed different kind of unit tests to provide a basic code coverage. We also used continuous integration, which executed the tests ever time we pushed our code to git. Besides the unit tests we have performed integration tests to ensure the connection between the different components. The testing of the entire system is done after the implementation phase was completed. This was partly done by checking if the final product matches the requirements that were set. It is also done by letting the target audience use the system and document the findings. A working beta implementation of the complete system was delivered as a proof of concept and most of the initially set requirements were fulfilled.Technische InformaticaComputer ScienceElectrical Engineering, Mathematics and Computer Scienc
Creating a Virtual Shopping Platform
No full textVirtual Reality has many more applications next to gaming, to which it is currently associated mostly. Ordina SMART Technologies was looking for a way to combine virtual reality with shopping, to create a Virtual Shopping Platform where users could shop and be immersed using virtual reality. An application had to be designed and implemented from scratch, combining elements from both shopping and virtual reality. An application like that has a huge potential scope, which is why the focus of the project was put on maintainability and extendability. The application supports multiple shops which reside on a server, and interaction with products. The groundworks of a Virtual Shopping Platform were created, intended to be expanded upon by Ordina developers.Computer ScienceElectrical Engineering, Mathematics and Computer Scienc
Multimodal recognition of emotions
No full textThis thesis proposes algorithms and techniques to be used for automatic recognition of six prototypic emotion categories by computer programs, based on the recognition of facial expressions and emotion patterns in voice. Considering the applicability in real-life conditions, the research is carried in the context of devising person independent methods that should be robust to various factors given the specificity of the considered modalities. An immediate focus represents the development of audio-visual algorithms and their implementation in form of software applications for automatic recognition of emotions.MediamaticaElectrical Engineering, Mathematics and Computer Scienc
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
The recognition of emotions from speech using GentleBoost classifier: A comparison approach
No full textThe recognition of the internal emotional state of one person plays an important role in several human-related fields. Among them, human-computer interaction has recently received special attention. The current research is aimed at the analysis of segmentation methods and of the performance of the GentleBoost classifier on emotion recognition from speech. The data set used for emotion analysis is Berlin - a database of German emotional speech. A second data set is DES – Danish Emotional Speech data set is used for comparison purposes. Our contribution for the research community consists in a novel extensive study on the efficiency of using distinct numbers of frames per speech utterance for emotion recognition. Eventually, a set of GentleBoost 'committees' with optimal classification rates is determined based on an exhaustive study on the generated classifiers and on different types of segmentation.Intelligent SystemsElectrical Engineering, Mathematics and Computer Scienc
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