[Dmbu-l] Indexing for Interactive Exploration of Big Data Series, this Friday at 11am in MCS 148

Charalampos Mavroforakis cmav at bu.edu
Wed Apr 23 11:04:06 EDT 2014

Hello everyone,

Here's the announcement for this Friday's talk.


*Title: *Indexing for Interactive Exploration of Big Data Series
*Speaker: *Kostas Zoumpatianos, University of Trento
*When: *Friday, April 25, 2014 at 11am in MCS 148

*Abstract:* Numerous applications continuously produce big amounts of data
series, and in several time critical scenarios analysts need to be able to
query these data as soon as they become available, which is not currently
possible with the state-of-the-art indexing methods and for very large data
series collections. In this paper, we present the first adaptive indexing
mechanism, specifically tailored to solve the problem of indexing and
querying very large data series collections. The main idea is that instead
of building the complete index over the complete data set up-front and
querying only later, we interactively and adaptively build parts of the
index, only for the parts of the data on which the users pose queries. The
net effect is that instead of waiting for extended periods of time for the
index creation, users can immediately start exploring the data series. We
present a detailed design and evaluation of adaptive data series indexing
over both synthetic data and real-world workloads. The results show that
our approach can gracefully handle large data series collections, while
drastically reducing the data to query de- lay: by the time
state-of-the-art indexing techniques finish indexing 1 billion data series
(and before answering even a single query), adaptive data series indexing
has already answered 300000 queries.

This is joint work with Prof. Stratos Idreos (Harvard University) and Prof.
Themis Palpanas (Paris Descartes University).

*Short Bio:* Kostas Zoumpatianos is a PhD student at the dbTrento lab of
the University of Trento in Italy, working on management of large
collections of data series.
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