4,900 research outputs found
Wind energy forecasting with neural networks: a literature review
Renewable energy is intermittent by nature and to integrate this energy into the Grid while assuring safety and stability the accurate forecasting of there newable energy generation is critical. Wind Energy prediction is based on the ability to forecast wind. There are many methods for wind forecasting based on the statistical properties of the wind time series and in the integration of meteorological information, these methods are being used commercially around the world. But one family of new methods for wind power fore castingis surging based on Machine Learning Deep Learning techniques. This paper analyses the characteristics of the Wind Speed time series data and performs a literature review of recently published works of wind power forecasting using Machine Learning approaches (neural and deep learning networks), which have been published in the last few years.Peer ReviewedPostprint (published version
Ensemble Committees for Stock Return Classification and Prediction
This paper considers a portfolio trading strategy formulated by algorithms in
the field of machine learning. The profitability of the strategy is measured by
the algorithm's capability to consistently and accurately identify stock
indices with positive or negative returns, and to generate a preferred
portfolio allocation on the basis of a learned model. Stocks are characterized
by time series data sets consisting of technical variables that reflect market
conditions in a previous time interval, which are utilized produce binary
classification decisions in subsequent intervals. The learned model is
constructed as a committee of random forest classifiers, a non-linear support
vector machine classifier, a relevance vector machine classifier, and a
constituent ensemble of k-nearest neighbors classifiers. The Global Industry
Classification Standard (GICS) is used to explore the ensemble model's efficacy
within the context of various fields of investment including Energy, Materials,
Financials, and Information Technology. Data from 2006 to 2012, inclusive, are
considered, which are chosen for providing a range of market circumstances for
evaluating the model. The model is observed to achieve an accuracy of
approximately 70% when predicting stock price returns three months in advance.Comment: 15 pages, 4 figures, Neukom Institute Computational Undergraduate
Research prize - second plac
Transform Diabetes - Harnessing Transformer-Based Machine Learning and Layered Ensemble with Enhanced Training for Improved Glucose Prediction.
Type 1 diabetes is a common chronic disease characterized by the body’s inability to regulate the blood glucose level, leading to severe health consequences if not handled manually. Accurate blood glucose level predictions can enable better disease management and inform subsequent treatment decisions. However, predicting future blood glucose levels is a complex problem due to the inherent complexity and variability of the human body.
This thesis investigates using a Transformer model to outperform a state-of-the-art Convolutional Recurrent Neural Network model by forecasting blood glucose levels on the same dataset. The problem is structured, and the data is preprocessed as a multivariate multi-step time series. A unique Layered Ensemble technique that Enhances the Training of the final model is introduced. This technique manages missing data and counters potential issues from other techniques by employing both a Long Short-Term Memory model and a Transformer model together. The experimental results show that this novel ensemble technique reduces the root mean squared error by approximately 14.28% when predicting the blood glucose level 30 minutes in the future compared to the state-of-the-art model. This improvement highlights the potential of this approach to assist diabetes patients with effective disease management
Transform Diabetes - Harnessing Transformer-Based Machine Learning and Layered Ensemble with Enhanced Training for Improved Glucose Prediction.
Type 1 diabetes is a common chronic disease characterized by the body’s inability to regulate the blood glucose level, leading to severe health consequences if not handled manually. Accurate blood glucose level predictions can enable better disease management and inform subsequent treatment decisions. However, predicting future blood glucose levels is a complex problem due to the inherent complexity and variability of the human body.
This thesis investigates using a Transformer model to outperform a state-of-the-art Convolutional Recurrent Neural Network model by forecasting blood glucose levels on the same dataset. The problem is structured, and the data is preprocessed as a multivariate multi-step time series. A unique Layered Ensemble technique that Enhances the Training of the final model is introduced. This technique manages missing data and counters potential issues from other techniques by employing both a Long Short-Term Memory model and a Transformer model together. The experimental results show that this novel ensemble technique reduces the root mean squared error by approximately 14.28% when predicting the blood glucose level 30 minutes in the future compared to the state-of-the-art model. This improvement highlights the potential of this approach to assist diabetes patients with effective disease management
Development of Grid e-Infrastructure in South-Eastern Europe
Over the period of 6 years and three phases, the SEE-GRID programme has
established a strong regional human network in the area of distributed
scientific computing and has set up a powerful regional Grid infrastructure. It
attracted a number of user communities and applications from diverse fields
from countries throughout the South-Eastern Europe. From the infrastructure
point view, the first project phase has established a pilot Grid infrastructure
with more than 20 resource centers in 11 countries. During the subsequent two
phases of the project, the infrastructure has grown to currently 55 resource
centers with more than 6600 CPUs and 750 TBs of disk storage, distributed in 16
participating countries. Inclusion of new resource centers to the existing
infrastructure, as well as a support to new user communities, has demanded
setup of regionally distributed core services, development of new monitoring
and operational tools, and close collaboration of all partner institution in
managing such a complex infrastructure. In this paper we give an overview of
the development and current status of SEE-GRID regional infrastructure and
describe its transition to the NGI-based Grid model in EGI, with the strong SEE
regional collaboration.Comment: 22 pages, 12 figures, 4 table
- …