Feature Selection Strategies for Classifying High Dimensional Astronomical Data Sets
This addresses classification challenges in astronomy for researchers dealing with massive, multi-parametric datasets, but it appears incremental as it applies existing feature selection techniques to new astronomical data.
The paper tackles the problem of classifying high-dimensional astronomical data by applying feature selection strategies to identify informative subsets, achieving results on three major astronomical problems using data from CRTS and Kepler surveys.
The amount of collected data in many scientific fields is increasing, all of them requiring a common task: extract knowledge from massive, multi parametric data sets, as rapidly and efficiently possible. This is especially true in astronomy where synoptic sky surveys are enabling new research frontiers in the time domain astronomy and posing several new object classification challenges in multi dimensional spaces; given the high number of parameters available for each object, feature selection is quickly becoming a crucial task in analyzing astronomical data sets. Using data sets extracted from the ongoing Catalina Real-Time Transient Surveys (CRTS) and the Kepler Mission we illustrate a variety of feature selection strategies used to identify the subsets that give the most information and the results achieved applying these techniques to three major astronomical problems.