1 code implementation • 29 Apr 2024 • Vitor Cerqueira, Nuno Moniz, Ricardo Inácio, Carlos Soares
We use these techniques to create synthetic time series observations and improve the accuracy of forecasting models.
no code implementations • 28 Apr 2024 • Rodrigo Tuna, Yassine Baghoussi, Carlos Soares, João Mendes-Moreira
We empirically evaluate the forecasting accuracy and the training time of the new algorithm and compare it with cLSTM and LSTM.
no code implementations • 25 Apr 2024 • Vitor Cerqueira, Moisés Santos, Yassine Baghoussi, Carlos Soares
We validated the proposed approach using a state-of-the-art deep learning forecasting method and 8 benchmark datasets containing a total of 75797 time series.
no code implementations • 3 Dec 2023 • Moisés Santos, André de Carvalho, Carlos Soares
In this paper, we demonstrate the utility of tsMorph by assessing the performance of the Long Short-Term Memory Network forecasting algorithm.
no code implementations • 10 Jul 2021 • Tarsicio Lucas, Teresa Ludermir, Ricardo Prudencio, Carlos Soares
In the current work, we performed a case study using meta-learning to choose the number of hidden nodes for MLP networks, which is an important parameter to be defined aiming a good networks performance.
no code implementations • 25 Jun 2021 • André Baptista, Yassine Baghoussi, Carlos Soares, João Mendes-Moreira, Miguel Arantes
Forecasting accuracy is reliant on the quality of available past data.
1 code implementation • 5 Apr 2021 • Vitor Cerqueira, Luis Torgo, Carlos Soares, Albert Bifet
In this paper, we leverage the idea of model compression to address this problem in time series forecasting tasks.
1 code implementation • 1 Apr 2021 • Vitor Cerqueira, Luis Torgo, Carlos Soares
We address this issue and compare a set of estimation methods for model selection in time series forecasting tasks.
2 code implementations • 23 Mar 2021 • André F. Cruz, Pedro Saleiro, Catarina Belém, Carlos Soares, Pedro Bizarro
Considerable research effort has been guided towards algorithmic fairness but real-world adoption of bias reduction techniques is still scarce.
no code implementations • 9 Mar 2021 • Tomas Sousa-Pereira, Tiago Cunha, Carlos Soares
In the meta level, the meta learning model will use the metafeatures to extract knowledge that will be used to predict the best algorithm for each user.
1 code implementation • 22 Oct 2020 • Vitor Cerqueira, Luis Torgo, Carlos Soares
The early detection of anomalous events in time series data is essential in many domains of application.
3 code implementations • 14 Oct 2020 • Vitor Cerqueira, Nuno Moniz, Carlos Soares
Time series forecasting is a challenging task with applications in a wide range of domains.
no code implementations • 7 Oct 2020 • André F. Cruz, Pedro Saleiro, Catarina Belém, Carlos Soares, Pedro Bizarro
Hence, coupled with the lack of tools for ML practitioners, real-world adoption of bias reduction methods is still scarce.
1 code implementation • 29 Sep 2019 • Vitor Cerqueira, Luis Torgo, Carlos Soares
Using a learning curve method, our results suggest that machine learning methods improve their relative predictive performance as the sample size grows.
no code implementations • 20 Mar 2019 • Cláudio Rebelo de Sá, Paulo Azevedo, Carlos Soares, Alípio Mário Jorge, Arno Knobbe
In CAR, the consequent is a single class, to which the example is expected to belong to.
2 code implementations • 30 Aug 2018 • Adriano Rivolli, Luís P. F. Garcia, Carlos Soares, Joaquin Vanschoren, André C. P. L. F. de Carvalho
These characterizations, also called meta-features, describe properties of the data which are predictive for the performance of machine learning algorithms trained on them.
3 code implementations • 23 Jul 2018 • Tiago Cunha, Carlos Soares, André C. P. L. F. de Carvalho
However, the results have shown that the feature selection procedure used to create the comprehensive metafeatures is is not effective, since there is no gain in predictive performance.
no code implementations • 16 Apr 2018 • Arvind Kumar Shekar, Cláudio Rebelo de Sá, Hugo Ferreira, Carlos Soares
Predicting the health of components in complex dynamic systems such as an automobile poses numerous challenges.
no code implementations • 8 Feb 2018 • Dylan te Lindert, Cláudio Rebelo de Sá, Carlos Soares, Arno J. Knobbe
The costs associated with refrigerator equipment often represent more than half of the total energy costs in supermarkets.
no code implementations • 4 Sep 2017 • Pedro Saleiro, Luís Sarmento, Eduarda Mendes Rodrigues, Carlos Soares, Eugénio Oliveira
Using a single GPU, we were able to scale up vocabulary size from 2048 words embedded and 500K training examples to 32768 words over 10M training examples while keeping a stable validation loss and approximately linear trend on training time per epoch.
no code implementations • 28 Jun 2017 • Fábio Pinto, Vítor Cerqueira, Carlos Soares, João Mendes-Moreira
Automated machine learning (autoML) is the field of ML that attempts to answers these needs.
2 code implementations • SEMEVAL 2017 • Pedro Saleiro, Eduarda Mendes Rodrigues, Carlos Soares, Eugénio Oliveira
This paper presents the approach developed at the Faculty of Engineering of University of Porto, to participate in SemEval 2017, Task 5: Fine-grained Sentiment Analysis on Financial Microblogs and News.