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Previsão do risco empresarial e investigação da interpretabilidade com base em GNNs

Previsão do risco empresarial e investigação da interpretabilidade com base em GNNs

Huaming Du

105,19 €
IVA incluido
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Editorial:
KS OmniScriptum Publishing
Año de edición:
2025
Materia
Teoría general del derecho
ISBN:
9786136346250
105,19 €
IVA incluido
Disponible

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Este livro integra a investigação sobre o risco financeiro das empresas com a tecnologia de redes neuronais gráficas (GNN) para enfrentar os desafios da análise de dados financeiros complexos e as interligações entre empresas. Explora três áreas-chave: 1. Representação dinâmica de gráficos: Propõe-se um quadro para a aprendizagem de representações gráficas dinâmicas com base em papéis estruturais, capturando a evolução temporal e as dependências topológicas globais, marcando a primeira utilização da aprendizagem recorrente neste contexto: Um algoritmo GNN duplo é introduzido para modelar as relações dinâmicas e complexas entre empresas e os efeitos de transbordamento de impulso, oferecendo uma nova abordagem para analisar o seu impacto na volatilidade do mercado de valores mobiliários.3. Interpretabilidade do risco financeiro: Para ultrapassar a natureza de caixa negra dos modelos de aprendizagem profunda, é desenvolvida uma estrutura GNN heterogénea para gerar subgrafos de provas que revelam factores internos e externos que afectam o risco financeiro das empresas, aumentando a transparência do modelo. Os resultados experimentais validam os métodos propostos, mostrando melhorias em várias tarefas, ao mesmo tempo que aumentam significativamente a interpretabilidade do modelo com tempos de inferência mais rápidos.

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