Software Engineering

In this paper, we show that the unsoundness discovered by Amin and Tate (2016) in Java’s wildcards is avoidable, even in the absence of a nullness-aware type system. The key insight of this paper is that soundness in type systems that implicitly introduce existential types through subtyping hinges on still making sure there are suitable witness types when introducing existentially quantified...

This chapter explores the possibility of building a unified assessment methodology for software reliability and security. The fault injection methodology originally designed for reliability assessment is extended to quantify and characterize the security defense aspect of native applications. Native application refers to system software written in C/C++ programming language. Specifically,...

Over the years, the mobile devices landscape has grown to hundreds of OEMs and tens of thousands of device models. This landscape has made it difficult to develop quality mobile applications that are user-friendly, stable, and performant. To accelerate mobile development and to help developers build better performing, more stable apps, Google built a large Mobile Device Farm that allows...

Federated learning is a machine learning technique that enables training across decentralized data. Recently, federated learning has become an active area of research due to an increased focus on privacy and security. In light of this, a variety of open source federated learning libraries have been developed and released. We introduce FedJAX, a JAX-based open source library for federated...