In this paper, we construct new families of convolutional codes. Such codes are obtained by means of algebraic geometry codes. Additionally, more families of convolutional codes are constructed by means of puncturing, extending, expanding and by the direct product code construction applied to algebraic geometry codes. The parameters of the new convolutional codes are better than or comparable t...

This paper describes the methodology used by the TALP-UPC team for the SEPLN 2013 shared task of tweet normalization (Tweet-Norm). The system uses a set of modules that propose different corrections for each out-of-vocabulary word. The final correction is chosen by weighted voting according to each module accuracy.

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This paper presents the evaluation of Ogmios, the UPC TTS system carried out within the Blizzard Challenge Initiative, 2007. Ogmios is a unit-selection based system. Prosodic models are used to select the units using acoustic measures in the target cost but the selected units are not modified. Most of the modules of Ogmios rely on data driven techniques. This evaluation confirms that this frame...

1 Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering, Technical University of Catalonia (UPC), Barcelona, Spain. 2 Biomedical Research Networking Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Zaragoza, Spain. 3 Centre for Research in NanoEngineering (CRNE) UPC, Barcelona, Spain. 4 Institute for Advanced S...

As a result of rapidly changing traffic characteristics in QoS-enabled networks oftentimes renegotiating the bandwidth requirements are needed. Once renegotiation is started, the sender keeps this process of invoking renegotiation until new requirements can be fulfilled (or until connection is eventually terminated.) The frequency of polling the network is delicate balance between huge traffic ...

Collective communication has been a part of the UPC standard since having been introduced in 2005 with the UPC Specification version 1.2. However, unlike MPI collectives, UPC collectives have never caught on and are rarely used. In this paper we identify and discuss several fundamental limitations and important missing features in the design of the existing UPC collectives that make them inconv...

We examine the effect of number of bidders and units on demand reduction effect in the uniform-price auction and the Vickrey auction. We found that increasing the number of bidders increases the first and the second-unit bids in a 2-unit setting and the third and the fourth-unit bids in a 4-unit setting. Increasing the number of units increases the first and the second-unit bids when the number...

This paper describes Ogmios, the UPC TTS system that was used in the 2010 Albayzin Evaluation. Ogmios is a concatenation system that builds the synthetic sentence from demiphones selected from the training database. In this evaluation round, the database was provided by the organization and it has been phonetically transcribed and segmented automatically using using the development tools includ...