Browsing by Subject "Previsão"

Now showing items 1-16 of 16

    • Time series forecasting : advances on Theta method 

      Fiorucci, José Augusto (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Estatística - PPGEs, Câmpus São Carlos, 13/05/2016)
      Accurate and robust forecasting methods for univariate time series are critical as the historical data can be used in the strategic planning of such future operations as buying and selling to ensure product inventory and ...

    • Análise de séries temporais fuzzy para previsão e identificação de padrões comportamentais dinâmicos 

      Santos, Fábio José Justo dos (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Ciência da Computação - PPGCC, Câmpus São Carlos, 30/04/2015)
      The good results obtained by the fuzzy approaches applied in the analysis of time series (TS) has contributed significantly to the growth of the area. Although there are satisfactory results in TS analysis with methods ...

    • Aplicação de metodologias para análise e previsão do preço do fruto de açaí 

      Eder, Karina (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Biotecnologia - PPGBiotec, , 13/09/2011)
      Açaí is the fruit of a palm tree found throughout the North of Brazil that has been gaining attention due to its high energetic potential, applications in pharmaceuticals, dentistry, medicine and food industries. So, ...

    • Método bagging para aprimoramento de previsões de séries temporais 

      Camargo, Juliana Shibaki (Universidade Federal de São Carlos, UFSCar, Programa Interinstitucional de Pós-Graduação em Estatística - PIPGEs, Câmpus São Carlos, 22/10/2021)
      Different methodologies are proposed and explored aiming to reduce time series forecasting error. A promising approach consists in combining different forecasts from different models in order to get a better accuracy, ...

    • Uma arquitetura de Gateway com QoS para gerenciamento de tráfego de rede considerando restrições temporais das aplicações 

      Marcello, Juliano (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Ciência da Computação - PPGCC, , 27/08/2009)
      Applications with time restrictions are becoming common in our daily lives. These applications range from games to applications for controlling air traffic. Applications with time restrictions that use the Internet / ...

    • Análise e previsão de séries temporais via Facebook Prophet 

      Borges, Mateus Penteado (Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 29/01/2024)
      Forecasting is an estimate or projection of what may happen in the future based on information and data available from the past and present. In other words, it is an attempt to make an informed guess about what is likely ...

    • Um estudo sobre a provisão de consórcio com séries temporais e machine learning 

      Lima, Thais Maíra Gonçalves de (Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 07/04/2022)
      The consortium sector of a particular company works by dividing its customers into groups that start and finish at the same time the payment of installments of a combined amount to obtain their own vehicle. The acquisition ...

    • Enhancing solar flare forecasting: a multi-class and multi-label classification approach to handle imbalanced time series 

      Discola Junior, Sérgio Luisir (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Ciência da Computação - PPGCC, Câmpus São Carlos, 21/06/2019)
      Solar flares are huge releases of energy from the Sun. They are categorized in five levels according to their potential damage to Earth (A, B, C, M, and X) and may produce strong impacts to communication systems, threatening ...

    • Uma avaliação de métodos de previsão aplicados à grandes quantidades de séries temporais univariadas 

      Pellegrini, Tiago Ribeiro (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Estatística - PPGEs, , 06/12/2012)
      Time series forecasting is probably one of the most primordial interests on economics and econometrics, and the literature on this subject is extremely vast. Due to technological growth in recent decades, large amounts of ...

    • Redes neurais recorrentes e XGBoost aplicados à previsão de radiação solar no horizonte de curto prazo 

      Heinen, Eduarth Dapper (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Ciência da Computação - PPGCC, Câmpus São Carlos, 28/08/2018)
      Precise estimates of energy production and consumption are essential to promote the integration of renewable energy sources to the electrical grid, guiding power supply balance through cycles and fluctuations inherent to ...

    • Previsão de viscosidade e temperatura liquidus de vidros óxidos via redes neurais artificiais 

      Bessa, Graziela Pentean (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Ciência e Engenharia de Materiais - PPGCEM, Câmpus São Carlos, 30/04/2020)
      The number of glass compositions that have already been studied (~10^5) is many times smaller than the potential glass compositions (~10^52). The traditional method “cook and look” all of the potential compositions to ...

    • Modelo de Séries Temporais Autorregressivo Periódico - PAR 

      Cavalaro, Natália Leite (Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 20/06/2021)
      This work presents the study of a type of time series model, called of periodic autoregressive model, which emerged from the researches of Thomas and Fiering (1962), according to Hipel and McLeod (1994). Its use is mainly ...

    • Onto Solar Flare - uma ontologia de domínio/aplicação sobre explosões solares sob escopo do método ECID 

      França, Natália de Souza (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Ciência da Computação - PPGCC, Câmpus São Carlos, 14/08/2020)
      Solar flares are phenomena capable of causing several damages in radio systems, communication satellites, global positioning systems (GPS), among others. The possible damage can vary according to the intensity of the ...

    • Detecção de alteração no regime pluviométrico da Serra da Cantareira via modelo de espaço de Estados 

      Souza, Robert Luís Alves de (Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 20/01/2021)
      In the period between 2014 and 2016, the Southeast region suffered from a severe drought process. According to the 2014 special insert, prepared by the National Water Agency (2014) of the Ministry of the Environment, the ...

    • Previsão de MP10 através de redes neurais: estudos de caso no Estado de São Paulo 

      Shibuya, Rudiger Yuujiro Mukuno (Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 19/04/2022)
      Air pollution is an ever-present and increasingly worrying health problem. and well-being of the population, in particular, the Mp10 particulate matter has become a target of studies because of the problems that their ...

    • Filtração do ar: análise de dados da poluição ambiental e controle da poluição do ar por membranas de r-PET com CuNP 

      Machry, Karine (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Engenharia Química - PPGEQ, Câmpus São Carlos, 01/07/2024)
      The growing concern about the risks to human health due to increasing pollution makes the use of efficient filters in ventilation systems essential for maintaining indoor air quality. Thus, the general objective of this ...