This paper provides an overview of the Speaker Antispoofing Competition organized by Biometric group at Idiap Research Institute for the IEEE International Conference on Biometrics: Theory, Applications, and Systems (BTAS 2016). The competition used AVspoof database, which contains a comprehensive set of presentation attacks, including, (i) direct replay attacks when a genuine data is played back using a laptop and two phones (Samsung Galaxy S4 and iPhone 3G), (ii) synthesized speech replayed with a laptop, and (iii) speech created with a voice conversion algorithm, also replayed with a laptop.The paper states competition goals, describes the database and the evaluation protocol, discusses solutions for spoofing or presentation attack detection submitted by the participants, and presents the results of the evaluation.

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All of the three risk assessment tools had the ability to discriminate fracture status among hemodialysis patients; FRAX BMD model did not improve the discriminative ability of BMD or FRAX non-BMD model alone.

An analytic expression is developed to predict grain boundary void growth in bamboo interconnect under thermal residual stress field. The rate process is controlled by grain boundary and interconnect/passivation interface diffusions. The thermal residual stress field relaxes during void growth. Based on the present analysis, the behaviors of the void growth and the stress redistribution are characterized as a function of the microstructure of the interconnect, the state of the thermal residual stress, the initial size of the void, as well as the diffusivity ratio between the interface and the grain boundary.