April Meetup in Karlsruhe
Details
Die nächste Veranstaltung der Big Data User Group Karlsruhe/Stuttgart findet am 10. April 2014 um 18:30 Uhr im Pizzahaus Oststadt, Rintheimer Straße 2, Karlsruhe statt.
Wir freuen uns auf Dr. Emmanuel Müller (http://www.ipd.kit.edu/~muellere/), Senior Researcher am KIT im Bereich Data Mining und Heterogeneous Data Spaces, sowie auf Dr. Valentin Zacharias, Senior Consultant Big Data, codecentric
Flexible Subspace Search for Outlier Detection and Description
Dr. Emmanuel Müller
Abstract: Outlier analysis is an important data mining task that aims to detect unexpected, rare, and suspicious objects in large and complex databases. Consistency checks in sensor networks, fraud detection in financial transactions, and emergency detection in health surveillance are only some of today’s application domains for outlier analysis. This talk will cover a flexible and adaptive subspace selection scheme allowing instantiations with different outlier models. We utilize the differences of outlier scores in random subspaces to perform a combinatorial refinement of relevant subspaces. Our refinement allows an individual selection of subspaces for each outlier, which is tailored to the underlying outlier model. This flexibility ensures that the approach directly benefits from any research progress in future outlier models. It allows search for relevant subspaces individually for each outlier, and hence, enables to describe each outlier by its specific outlier properties. In our empirical evaluation we show the flexibility of our subspace search w.r.t. various outlier models such as distance, angle, and local-density based outlier detection.
Realtime Big Data Step By Step mit Kafka, Storm und Hadoop
Dr. Valentin Zacharias, Senior Consultant Big Data, codecentric
Abstract: Die Lambda Architektur ist eine neue abstrakte Architektur für die Realisierung von Realtime Big Data Anwendungen. In dieser Präsentation soll diese Architektur, ihre Motivation und eine konkrete technische Umsetzung mit Open Source Technologien kurz vorgestellt werden.
April Meetup in Karlsruhe