Public Articles
Elementos de conteo Martin Seveso 180043 Fernando Rodriguez 198238
Conteo y Grafos - Obligatorio 2
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Este principio también llamado ”principio de Dirichlet ”, en honor a un matemático alemán de principios del siglo XIX; establece que : "Si tenemos p palomas, las que se disponen en n nidos , donde p \(\)> n , entonces por lo menos dos palomas se deben ubicar en el mismo nido."
Entrega 2 Conteo y Grafos Sebastián Machiñena (165010) Gonzalo Lamela (152427)
and 1 collaborator
Relaciones de orden, equivalencia y Hasse
and 2 collaborators
A continuacion se presenta un resumen breve sobre relaciones de equivalencia y relaciones de orden parcial, esto implica definir una relación y exponer sus propiedades. El material elaborado por la Cátedra de Matemática de Universidad ORT, se utiliza como referencia para extraer conceptos e imágenes.
“El concepto de relacion implica la idea de correspondencia entre los elementos de dos conjuntos que forman parejas ordenadas” (Enciclopedia, 2011). Teniendo en cuenta el concepto anteriormente expresado, veremos las relaciones binarias de un conjunto en si mismo. nos centraremos en explicar sus propiedades y cómo reconocerlas a través de las distintas formas de representación de una relación.
Tomemos un conjunto X no vacío, de allí surge que una relación es un subconjunto del mismo. Estas serán relaciones binarias en el conjunto X. Existen cuatro formas de representar una relación binaria: Extensión, Comprensión, Diagrama y Matricial. En el primer caso, se muestra cada pareja de la relación, a través de pares ordenados. Si lo expresamos por comprensión, se muestran todos los elementos del conjunto y además, se determinan las condiciones que tendrán las parejas para pertenecer a la relación. En el diagrama, se muestra la relación a través de vértices y aristas. Por último, se representa a través de una matriz cuadrada dónde solo se ingresan unos (cuando hay relación) y ceros (cuando no hay relación).
A modo de ejemplo:
Sea C = {1,2,3}, tal que: (x, y)∈R ↔ x ≤ y
R = {(1,1), (1,2), (1,3) (2,2), (2,3), (3,3)}
\[ M_r =
\left( \begin{array}{ccc}
1 & 1 & 1 \\
0 & 1 & 1 \\
0 & 0 & 1
\end{array} \right) \]
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and 1 collaborator
Elementos de conteo Martin Sevese Fernando Rodriguez 198238\(s;:wer\)
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5. Theory of three-electrone bond in the four works with brief comments
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Multi-class Adaboost
The name of the analysed article is “Multi-class AdaBoost” witch is a special issue on data mining and machine learning. It was written by Ji Zhu who is a professor of statistics and EECS in department of statistics at Michigan University, Hui Zou who is a professor of statistics at Minnesota University, Saharon Rosset who is associate professor in the department of statistics and Operations research at Tel Aviv University and TREVOR HASTIE who is a professor of statistics and biomedical data science at Stanford University.
The article was published in the “Statistics and Its Interface (2009)”, Volume 2 p(349–360). This journal as defined in [5]: "is a quarterly peer-reviewed open access scientific journal covering the interface between the field of statistics and other disciplines. The journal was established in 2008 and is published by International Press. The editor-in-chief is Heping Zhang (Yale University)".
In this paper, the authors develops a new algorithm that directly extends the AdaBoost algorithm from solving the two-class classification problems to solving the multi-class classification problems. Before the authors spoke about their new algorithm, they started by giving us some information about other similar existent algorithms and their problems, then some information about the AdaBoost algorithm .
The paper is organized as follows: In section 2 , we will see the scientific context of the article. Some of the existing works on the subject are listed in section 3 . Section 4 will present the contribution of the article. In section 5, we will see the experiments and the validations that are presented in the article. The last Section (section 6) will summarize all the work.
Implementing Socially Aware LSTMs for effective Crowd Navigation
and 1 collaborator
gui_es_06_strumenti_per_il_web
and 2 collaborators
A microbial survey of the International Space Station (ISS)
and 8 collaborators
#Abstract
Background: Modern advances in sequencing technology have enabled the census of microbial members of many natural ecosystems. Recently, attention is increasingly being paid to the microbial residents of human-made, built ecosystems, both private (homes) and public (subways, office buildings, and hospitals). Here, we report results of the characterization of the microbial ecology of a singular built environment, the International Space Station (ISS). This ISS sampling involved the collection and microbial analysis (via 16S rDNA PCR) of 15 surfaces sampled by swabs onboard the ISS. This sampling was a component of Project MERCCURI (Microbial Ecology Research Combining Citizen and University Researchers on ISS). Learning more about the microbial inhabitants of the "buildings" in which we travel through space will take on increasing importance, as plans for human exploration and colonization of the solar system come to fruition.
Results: Sterile swabs were used to sample 15 surfaces onboard the ISS. The sites sampled were designed to be analogous to samples collected for 1) the Wildlife of Our Homes project and 2) a study of cell phones and shoes that were concurrently being collected for another component of Project MERCCURI. Sequencing of the 16S rDNA genes amplified from DNA extracted from each swab was used to produce a census of the microbes present on each surface sampled. We compared the microbes found on the ISS swabs to those from both Earth homes and data from the Human Microbiome Project.
Conclusions: While significantly different from homes on Earth and the Human Microbiome Project samples analyzed here, the microbial community composition on the ISS was more similar to home surfaces than to the human microbiome samples. The ISS surfaces are species-rich with 1036-4294 operational taxonomic units (OTUs per sample). There was no discernible biogeography of microbes on the 15 ISS surfaces, although this may be a reflection of the small sample size we were able to obtain.
Relaciones de Orden, equivalencia y Diagrama de Hasse
and 1 collaborator
Exploring the relationship between the usage of the CitiBike(s) when used by Customers and Subscribers
and 5 collaborators
Stellar Ultrasound
7 ways on how to differentiate your small business from the competition
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Leighton-Linslade and the new energy landscape
What are the green credentials of South Bedfordshire? I’ve been spurred into researching this question and to compare how that fits with national requirements, because of a new wind turbine application happening near Leighton-Linslade. The town has been formed and built its personality about substantial national infrastructure - Watling St; the Grand Union Canal; the West Coast Main Line Railway. Personally I see that we have an opportunity to help tackle the next infrastructure change and to lead on the realisation of Britain’s future energy landscape.