Housing prices in California: an approach to forecasting in the real estate sector

Authors
Keywords:
Machine Learning, Price Prediction, Real Estate Sector, Random Forest, Linear Regression
Abstract

This paper presents a comparative analysis of machine learning techniques applied to price forecasting in the California real estate sector. The models investigated were Multiple Linear Regression, Polynomial Regression, Robust Regression (RANSAC) and Random Forest, each one being evaluated based on statistical metrics such as Mean Absolute Error (MAE), Root Mean Square Error (RMSE) and Coefficient of Determination (R²). The dataset used was obtained from the StatLib repository and contains information on property characteristics, location and socioeconomic profile of the population. The results indicate that, although Random Forest presents better predictive performance, there are signs of overfitting, suggesting that an increase in the number of samples could improve the generalization of the model. On the other hand, the Linear Regression and Polynomial Regression models demonstrated greater stability and generalization capacity, although with a slight loss of accuracy. This study contributes to the understanding of the applicability of these techniques in real estate price modeling and discusses the impacts of sample size on model accuracy.

Author Biography
  1. Christian Gianelli da Silva, Federal University of Ouro Preto

    Atuou como Pesquisador Bolsista IEL e FAPESC modalidade DTIB em projeto de desenvolvimento tecnológico industrial para produção de novos resistores automotivos. Possui Pós-Graduação em Metrologia aplicada a qualidade industrial, Pós-Graduação em Indústria 4.0, Pós-Graduação em Engenharia da Qualidade aplicada a gestão de pessoas, Engenheiro de Segurança do Trabalho e MBA Global Business Administration and Management, General realizado em Madrid na Espanha. Participou de um projeto para análise da atmosfera em ambientes industriais (AMBIOSFERA) em Portugal. Mestrado em Pesquisa Operacional do Instituto Tecnológico de Aeronáutica (ITA, 2021) e Mestrado também em Pesquisa Operacional pela Universidade Federal de São Paulo (UNIFESP, 2021). É graduado em Engenharia de Controle e Automação pela Faculdade (FPI, 2018), Técnico em Mecânica pelo (SENAI, 2010) e Aprendizagem Industrial pelo SENAI. Adquiriu experiência de 7 anos na área de Robótica, Mecatrônica e Automação industrial com passagem pelas principais multinacionais em fabricação de aço ( Arcelor Mittal e Usiminas ). Além disso, realizou intercâmbio como Engineer Global Volunteer no país do Paraguai e Argentina onde desenvolveu habilidades de Impressão 3D e Eletrônica.Tem interesse na área de Otimização aplicadas a Indústria 4.0. http://lattes.cnpq.br/2924540172423849

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Published
2025-03-17
Section
OPERATIONAL RESEARCH
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Copyright (c) 2025 Christian Gianelli da Silva (Autor)

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How to Cite

Silva, C. G. da. (2025). Housing prices in California: an approach to forecasting in the real estate sector. Brazilian Journal of Production Engineering, 11(1), 346-356. https://doi.org/10.47456/bjpe.v11i1.47469