Ortiz, Pablo
SiamTST: A Novel Representation Learning Framework for Enhanced Multivariate Time Series Forecasting applied to Telco Networks
Kristoffersen, Simen, Nordby, Peter Skaar, Malacarne, Sara, Ruocco, Massimiliano, Ortiz, Pablo
We introduce SiamTST, a novel representation learning framework for multivariate time series. SiamTST integrates a Siamese network with attention, channel-independent patching, and normalization techniques to achieve superior performance. Evaluated on a real-world industrial telecommunication dataset, SiamTST demonstrates significant improvements in forecasting accuracy over existing methods. Notably, a simple linear network also shows competitive performance, achieving the second-best results, just behind SiamTST.
The Norwegian Parliamentary Speech Corpus
Solberg, Per Erik, Ortiz, Pablo
The Norwegian Parliamentary Speech Corpus (NPSC) is a speech dataset with recordings of meetings from Stortinget, the Norwegian parliament. It is the first, publicly available dataset containing unscripted, Norwegian speech designed for training of automatic speech recognition (ASR) systems. The recordings are manually transcribed and annotated with language codes and speakers, and there are detailed metadata about the speakers. The transcriptions exist in both normalized and non-normalized form, and non-standardized words are explicitly marked and annotated with standardized equivalents. To test the usefulness of this dataset, we have compared an ASR system trained on the NPSC with a baseline system trained on only manuscript-read speech. These systems were tested on an independent dataset containing spontaneous, dialectal speech. The NPSC-trained system performed significantly better, with a 22.9% relative improvement in word error rate (WER). Moreover, training on the NPSC is shown to have a "democratizing" effect in terms of dialects, as improvements are generally larger for dialects with higher WER from the baseline system.
Playable Experiences at AIIDE 2017
Treanor, Mike (American University) | Warren, Nicholas (University of California, Santa Cruz) | Reed, Mason (University of California, Santa Cruz) | Smith, Adam M. (University of California, Santa Cruz) | Ortiz, Pablo (Massachusetts Institute of Technology) | Coney, Laurel (Massachusetts Institute of Technology) | Sherman, Loren (Massachusetts Institute of Technology) | Carré, Elizabeth ( Massachusetts College of Art and Design ) | Vivatvisha, Nadya ( Harvard University ) | Harrell, D. Fox (Massachusetts Institute of Technology) | Mardo, Paola ( University of Southern California ) | Gordon, Andrew (University of Southern California) | Dormans, Joris (Ludomotion) | Robison, Barrie (Polymorphic Games) | Gomez, Spencer (University of Idaho) | Heck, Samantha (University of Idaho) | Wright, Landon (University of Idaho) | Soule, Terence (University of Idaho)