6 CONCLUSÕES E SUGESTÕES PARA TRABALHOS FUTUROS
6.1 SUGESTÕES PARA TRABALHOS FUTUROS
A expansão dos testes para demais instrumentos financeiros – além dos fundos de investimento – seria a principal sugestão para trabalhos futuros. Apesar do modelo, a princípio, comportar tal modificação, os devidos testes não foram efetuados, não sendo, assim, possível confirmar a usabilidade. Ampliando o modelo para outros produtos – como títulos de renda fixa, ações e derivativos –, o sistema teria mais robustez e seria de maior utilidade para o problema de seleção de portfólios na vida real.
O aumento do número de objetivos ou do número de critérios para classificação das alternativas, talvez, exijam ferramentas computacionais mais robustas para resolução do problema – testes adicionais precisam ser efetuados para comprovar a afirmação. Novas restrições, também, poderiam ser inseridas em trabalhos futuros, como, por exemplo estipular um valor máximo em dias para o prazo médio da carteira, medida obtida a partir da ponderação do peso das alternativas na carteira e os seus respectivos tempos de resgate.
O teste com diferentes métricas de risco é, também, um possível cenário a se abordar em trabalhos futuros. Para o trabalho em questão, foi utilizado o desvio médio absoluto (MAD), mas, como métricas a testar, poderão ser usadas, por exemplo, o próprio desvio-padrão ou a variância da carteira, o value-at-risk (VaR), o VaR Condicional, dentre várias outras opções que se enquadrariam na resolução do problema.
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