Time series provide massive data of multiple input sources. The implemented descriptor helps to reduce the amount of data, allows better comparison and visualization to the user. It uses the Piecewise Aggregate Approximation (PAA) to reduce the amount of data and the Symbolic Aggregate approXimation (SAX) to transforms the data into a symbolic representation. Finally, the project displays the representation of the series as a color-matrix to the user.
The time-series descriptor was developed together with Jan Riemann and Michael Stoica. It was part of the seminar Visual Analytics at Fraunhofer IGD and TU Darmstadt during the summer term 2010. The project was supervised by Dr. Tobias Schreck and Jürgen Bernard.