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GEPOC Parameters -- Open Source Parametrisation and Validation for Austria, Version 2.0

Bicher, Martin, Viehauser, Maximilian, Giannandrea, Daniele, Kastinger, Hannah, Brunmeir, Dominik, Rippinger, Claire, Urach, Christoph, Popper, Niki

arXiv.org Artificial Intelligence

GEPOC, short for Generic Population Concept, is a collection of models and methods for analysing population-level research questions. For the valid application of the models for a specific country or region, stable and reproducible data processes are necessary, which provide valid and ready-to-use model parameters. This work contains a complete description of the data-processing methods for computation of model parameters for Austria, based exclusively on freely and publicly accessible data. In addition to the description of the source data used, this includes all algorithms used for aggregation, disaggregation, fusion, cleansing or scaling of the data, as well as a description of the resulting parameter files. The document places particular emphasis on the computation of parameters for the most important GEPOC model, GEPOC ABM, a continuous-time agent-based population model. An extensive validation study using this particular model was made and is presented at the end of this work.


A Sparse Non-Parametric Approach for Single Channel Separation of Known Sounds

Smaragdis, Paris, Shashanka, Madhusudana, Raj, Bhiksha

Neural Information Processing Systems

In this paper we present an algorithm for separating mixed sounds from a monophonic recording. Our approach makes use of training data which allows us to learn representations of the types of sounds that compose the mixture. In contrast to popular methods that attempt to extract com- pact generalizable models for each sound from training data, we employ the training data itself as a representation of the sources in the mixture. We show that mixtures of known sounds can be described as sparse com- binations of the training data itself, and in doing so produce significantly better separation results as compared to similar systems based on compact statistical models.