[Alumnos-ii-cs] Coloquio Departamental, Jueves 24 de Septiembre 11:30 Hrs, LPA, CSSJ y F106, CC

Ricardo Nanculef jnancu at inf.utfsm.cl
Mon Sep 21 10:27:47 CLST 2015


Estimad at s, 

El próximo *Jueves 24 de Septiembre a las 11:30*, Alejandro Barrientos, Ingeniero Informático en ALMA y estudiante de Doctorado en Ingeniería Informática del DI, nos ofrecerá un coloquio titulado:

"Using DBSCAN and MPI4Py to Detect Regions of Interest in ALMA FITS Files"

La charla tendrá lugar en el Auditorio Claudio Matamoros (F-106) en Casa Central y se transmitirá por videoconferencia al Laboratorio de Programación Avanzada (LPA) del Campus San Joaquín. 

¡Quedan todos cordialmente invitados! 

*Resumen:* As astronomical instruments are growing in size, so is the data they deliver, the time will come when the data files will no longer be able to be analyzed manually due to the sheer size of the data cube, this talk, intended for audience without background in astronomy, is about my research to create an algorithm that is able to detect the "interesting" regions inside an ALMA data cube (a FITS file) and generate spectra where different types of molecules could be found, I have developed a basic model where I use the DBSCAN clustering algorithm to detect regions of high emission, and for each cluster, generate an integrated emission spectrum that is analyzed for peaks, an astronomical catalogue called Splatalogue is queried for molecular information in the peak frequencies.

In order to enhance the processing capabilities of the algorithm, an implementation of the MPI approach was made, using the mpi4py libraries, allowing a 3.78x speed increase in the testing environment.

*Mini Bio:* Alejandro Barrientos is an Archive Specialist at the Joint ALMA Observatory since 2010, working in the ALMA Department of Computing. Degree on Informatics Engineering at the Universidad Central de Chile, joined the PhD. in Computer Science program at UTFSM in late 2012, his research interests lie within the Astro-informatics field and Astronomical Archiving Systems.

Cordiales Saludos, 

Comité de Coloquio
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