1,721,060 research outputs found
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
Enhanced Population Estimation beyond Counts: Modelling Age Patterns
No full textFine-scale population distribution and demographic knowledge are essential to support efficient urban monitoring, planning and decision making. In particular, urban areas face many future challenges concerning rapidly growing and ageing societies. Recent studies have extensively disaggregated population counts, while information on demographic measures including age have remained unattended. In this work, we develop methods to enhance demographic prediction by estimating not only population numbers, but also average age and the proportion of the elderly (65 years and older). By implementing and comparing different ML-algorithms (Random Forest, Support Vector Machines and Linear Regression), we show that enhanced demographic patterns can be estimated using Points-of-Interest (POI) and real estate data. Linear Regression has proven to perform best and most constantly throughout the predictions, while Random Forest and Support Vector Machines are more sensitive to the training data. Our results reveal that there is a strong relationship between a) population counts and the number of POI and information on real estate (block and transaction counts), and b) age distributions and real estate metadata (property age and flat type). This study highlights the potential of a small set of detailed, strong predictors in combination with appropriate models for population estimations beyond counts in urban areas
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
GeoAI for Urban Sensing
No full text10.1201/9781003308423-17Handbook of Geospatial Artificial Intelligence351-36
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
Procedurální modelování a realismus v počítačové grafice
Full text linkJedním z cílů počítačové grafiky je vytváření realistických obrázků. Tento realismus je mimo jiné podmíněn dostupností kvalitního obsahu a možností real- ismus tohoto obsahu ověřit. Realismus a především realismus v procedurálním modelování ale bohužel nejsou v současné literatuře dostatečně zastoupeny. V důsledku toho se právě na tato dvě témata zaměřujeme. Zkoumáme definice obecného realismu v počítačové grafice a také zavádíme teoretický rámec pro uvažování a diskuzi o realismu v procedurálním modelování. Abychom tento teor- etický rámec doplnili konkrétními daty, předkládáme uživatelskou studii realismu procedurálně generovaných budov. V ní zjišťujeme, že realismus této konkrétní třídy procedurálních modelů je obsažen v různých škálách obrazu a docházíme k závěru, že si autoři procedurálních pravidel pro budovy musejí všímat ne- jen drobných detailů, ale také celkového tvaru generovaných modelů. Nakonec popisujeme metodu pro generování procedurálních silničních sítí ve městech a jejich okolí. Za pomoci simulace dopravy a poznatků přejatých z existující lit- eratury necháváme města růst v průběhu simulovaného času. Výsledná města jsou utvářena srůstem menších silnic...One of the long-standing goals of computer graphics is to generate realistic imagery. This realism is predicated, among other things, on having access to high- quality content to display, and being able to verify its realism. Unfortunately, realism and especially realism in procedural modeling are under-represented in current literature. Consequently, we address these two topics by investigating the definitions of general realism in computer graphics and by providing a basic framework for thinking and talking about realism in procedural modeling. In or- der to provide this framework with initial tangible data, we present a user study of the realism of procedural buildings. We find that realism of this specific class of procedural models is carried on different scales and conclude that authors of procedural rules for buildings need to beware of not only the fine details, but also the overall shape of the generated models. Finally, we present a method for growing procedural road networks in and close to cities. We use a traffic simula- tion and adapt existing research to grow cities over time. The cities are formed by letting several meaningfully positioned smaller settlements' minor roads grow in step with additional major roads. As a result, we are able to generate cities with rich, complex and realistic...Katedra softwaru a výuky informatikyDepartment of Software and Computer Science EducationMatematicko-fyzikální fakultaFaculty of Mathematics and Physic
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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