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• W4281483290 abstract "Risk management of electric power transmission lines requires knowledge from different areas such as the environment, land, investors, regulations, and engineering. Despite the widespread availability of databases for most of those areas, integrating them into a single database or model is a challenging problem. Instead, in this paper, we propose a novel method to calculate risk probabilities on the implementation of transmission lines based on unstructured text from a single source. It uses the Brazilian National Electric Energy Agency’s (ANEEL) weekly reports, which contain decisions about the electrical grid comprising most of the aforementioned areas. Since the data are unstructured (text), we employed NLP techniques such as stemming and tokenization to identify keywords related to common causes of risks provided by an expert group on energy transmission. Then, we used models to estimate the probability of each risk. This method differs from previous works, which were based on structured data (numerical or categorical) from single or multiple sources. Our results show that we were able to extract relevant keywords from the ANEEL reports that enabled our proposed method to estimate the probability of 97 risks out of 233 listed by an expert." @default.
• W4281483290 created "2022-05-26" @default.
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• W4281483290 date "2022-05-24" @default.
• W4281483290 modified "2023-09-26" @default.
• W4281483290 title "Unstructured Data Analysis for Risk Management of Electric Power Transmission Lines" @default.
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• W4281483290 doi "https://doi.org/10.3390/app12115292" @default.
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