SOLEV is a solar event video generation framework that integrates multiple data sources of solar images. This is the first framework that visualizes spatial solar event boundaries of the tracked and interpolated spatiotemporal trajectories over time. The video generator takes the interpolated trajectories as well as images from the SDO from the DMLab server at Georgia […]
Over the last decade, the volume of solar big data have increased immensely. However, the availability and standardization of solar data resources has not received much attention because of the scattered structure among different data providers, lack of consensus on data format, and lack of querying capabilities on metadata. Moreover, there is limited access to […]
Spatiotemporal event sequences (STESs) are the ordered series of event types whose spatiotemporal instances frequently follow each other in time and are located close-by. Previous studies on STES mining require significance and prevalence thresholds for the discovery, which is often a very difficult even for domain experts. As the quality of the discovered STESs is […]
Mining spatiotemporal co-occurrence patterns requires assessing the strength of co- occurrences among the instances of different feature types. Currently, a spatiotemporal version of the Jaccard measure is used for measuring the strength of spatiotemporal co- occurrences. We present an extended spatiotemporal version of the Jaccard measure (J*) that is more relevant and efficient for the […]
Spatio-temporal co-occuring patterns represent subsets of event types that occur together in both time and space. This project provides a general framework to mining spatio-temporal co-occurring patterns for spatio-temporal events.
Modern databases and data mining tasks are often faced with costly data retrieval tasks in very high dimensional data. We present an open source implementation of the multi-dimensional indexing method iDistance and our extensions. It includes many customizable algorithm options and a set of basic test files (and dataset) with instructions to use and install […]
Managing and accommodating the evolution of database schema (the metadata describing the structure of a database) poses a number of interesting problems. Some of these problems are particularly acute in Online Transaction Processing (OLTP) databases that serve as the data store for large, extremely active data processing systems, especially in systems that use a Software […]
The solar CBIR system is the first ever Content-Based Image Retrieval system specifically suited for solar image archives. Our Feature Finding Team (FFT) — part of NASA’s SDO Mission — is currently creating this system and a publicly accessible website to interact with it. Users will be able to use images of interest to search […]