1,721,124 research outputs found
Clustering spatio-functional data: a method based on a nonparametric variogram estimation for functional data
No full textIn this paper we propose an extended version of a model-based strategy
for clustering spatio-functional data. The original proposed method considers the
problem of clustering curves that are realization of a random stochastic process and
aims to discover functional sub-processes and their generating models in unsampled
location of the space. The estimates of these model implies a fitting of the
trace-variogram function for each cluster that is done by ordinary least squares or
weighted least squares. In this paper we propose a more general estimator for the
variogram function that is a kernel estimator. It is a more general weighted average
than the classical estimator and it is robust in the sense that nearst-neighbour
parameter selection is distribution free
Hixosfs_Music: A Filesystem in Linux Kernel Space for Musical Files
No full textHixosfs_music is a Linux filesystem that could be included in the standard Linux kernel. Differences respect to the widely used ext2 filesystem are additional features for storing and efficiently retrieving musical data. Specialty it extends the inode for each musical file with new proprieties relatives to the file content such as album, author, title, year. Beside standard user mode tools (stats, chmod, Is and so (in), specific command are needed to directly handle with new file tags (statmusic, chmusic, orderby, and so on)
Educational path on the recursion from nature to coding,Percorso didattico sulla ricorsione dalla natura al coding
No full textIl presente lavoro è un percorso educativo didattico destinato ad una classe terza di un Liceo Scientifico. Partendo dall'osservazione di casi di ricorsione presenti in natura, e poi in quasi tutte le discipline umane, giunge alla sua definizione formale. L’obiettivo è insegnare agli allievi l’applicazione della ricorsione,come tecnica di programmazione alternativa, e il suo potere espressivo
Mining implicit data association from Tripadvisor hotel reviews
No full textIn this paper, we analyse a dataset of hotel reviews. In details, we enrich the review dataset, by extracting additional features, consisting of information on the reviewers’ profiles and the reviewed hotels. We argue that the enriched data can gain insights on the factors that most influence consumers when composing reviews (e.g., if the appreciation for a certain kind of hotel is tied to specific users’ profiles). Thus, we apply statistical analyses to reveal if there are specific characteristics of reviewers (almost) always related to specific characteristics of hotels. Our experiments are carried out on a very large dataset, consisting of around 190k hotel reviews, collected from the Tripadvisor websit
Mining implicit data association from Tripadvisor hotel reviews
No full textIn this paper, we analyse a dataset of hotel reviews. In details, we enrich the review dataset, by extracting additional features, consisting of information on the reviewers' profiles and the reviewed hotels. We argue that the enriched data can gain insights on the factors that most influence consumers when composing reviews (e.g., if the appreciation for a certain kind of hotel is tied to specific users' profiles). Thus, we apply statistical analyses to reveal if there are specific characteristics of reviewers (almost) always related to specific characteristics of hotels. Our experiments are carried out on a very large dataset, consisting of around 190k hotel reviews, collected from the Tripadvisor website
Google web searches and Wikipedia results: A measurement study
No full textHow are users exposed to Wikipedia results, in return to their web searches? Where are such results positioned on the screen? In this study, we experimentally measure the ranking of Wikipedia pages on Google Italia
Corroborating the effectiveness of PCV7/PCV13 vaccination program among children aged less than 5 years, Puglia, Italy, 2006-2012
No full text
Letter to the editor: Measles on the cruise ship: links with virus spreading into an emergency department in Southern Italy
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