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André Gonçalves

Publications and source records attributed to André Gonçalves.

2 recordsLinked to original sources

Uma extensão de Raft com propagação epidémica

The Raft agreement algorithm is recognized for its ease of understanding and practical implementation, and is currently adopted in systems such as Kubernetes. However, it has some limitations in terms of scalability and performance as it concentrates effort on the leader. In this paper we present a new algorithm that expands Raft by incorporating epidemic propagation mechanisms to decentralize the replication effort. Our proposal is evaluated experimentally with a Go implementation and tested with a significant number of processes. -- -- O algoritmo de acordo Raft é reconhecido pela sua facilidade de compreensão e implementação prática, sendo atualmente adotado em sistemas como o Kubernetes. No entanto, tem algumas limitações em termos de escalabilidade e desempenho por concentrar o esforço no líder. Neste trabalho apresentamos um novo algoritmo que expande o Raft com a incorporação de mecanismos de propagação epidémica para descentralizar o esforço da replicação. A nossa proposta é avaliada experimentalmente com uma implementação em Go e testada com um número significativo de processos.

cs.DC↗

Rethinking Financial Service Promotion With Hybrid Recommender Systems at PicPay

The fintech PicPay offers a wide range of financial services to its 30 million monthly active users, with more than 50 thousand items recommended in the PicPay mobile app. In this scenario, promoting specific items that are strategic to the company can be very challenging. In this work, we present a Switching Hybrid Recommender System that combines two algorithms to effectively promote items without negatively impacting the user's experience. The results of our A/B tests show an uplift of up to 3.2\% when compared to a default recommendation strategy.

cs.IR↗