QLS guest seminar - Wednesday 11 October at 11:00

[Sarnataro Erica]

>>
>> *QLS  guest seminar  -  Wednesday 11 October at 11:00
>> *ICTP, Central Area, 2nd floor, old SISSA building, Via Beirut*
>> *
>> Title: Automatic topography of complex data sets by accurate density 
>> estimation
>>
>> Speaker: Alex Rodriguez - Statistical and Biological Physics, SISSA
>>
>> Abstract:
>> Data sets can be considered an ensemble of realizations drawn from a 
>> density distribution. Obtaining a synthetic description of this 
>> distribution allows to rationalize the underlying generating process 
>> and building human-readable models. In simple cases, visualizing the 
>> distribution in a suitable low-dimensional projection is enough to 
>> capture its main features but real-world data sets are often embedded 
>> in a high-dimensional space.
>> I present a procedure that allows to obtain such a synthetic 
>> description in an automatic way with the only information of pairwise 
>> data distances (or similarities). This methodology is based on a 
>> reliable estimation of the intrinsic dimension of the dataset and the 
>> probability density function coupled with a modified Density Peaks 
>> clustering algorithm.
>> The final outcome of all this machinery working together is a 
>> hierarchical tree that summarizes the main features of the data set 
>> and a classification of the data that maps which of these features 
>> they belong to.
>>
>> Everyone interested is most welcome to attend!
>> -- 
>> Erica Sarnataro
>> Group Secretary
>> Quantitative Life Sciences
>> The Abdus Salam International Centre for Theoretical Physics (ICTP)
>> Trieste,  Italy
>> Tel. +39-040-2240623
>> www.ictp.it/research/qls.aspx
>> e-mail:qls at ictp.it  
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