This paper presents a Speech Technology Center (STC) system submitted to the NIST i-vector Challenge. The system includes different subsystems based on PLDA, LDA-SVM, RBM-PLDA and DBN-PLDA. We propose an original iterative scheme for clustering the NIST i-vector Challenge devset. We also introduce the RBM-PLDA subsystem in the NIST i-vector Challenge. Experiments performed on the progress datas...

Introduction This report was developed for the National Institute of Standards and Technology (NIST) as the first deliverable under Purchase Order 43SBNB067018. It is intended to suggest one or more strategies that the Computer Security Division at NIST can use to 1) systematically organize and analyze public comments on the AES finalists and the AES process, and 2) prepare a Round 2 status rep...

This paper summarizes the BUT-AGNITIO system for NIST Language Recognition Evaluation 2009. The post-evaluation analysis aimed mainly at improving the quality of the data (fixing language label problems and detecting overlapping speakers in the training and development sets) and investigation of different compositions of the development set. The paper further investigates into JFA-based acousti...

The air-kerma standards used for the measurement of medium-energy x rays were compared at the National Institute of Standards and Technology (NIST) and at the Bureau International des Poids et Mesures (BIPM). The comparison involved a series of measurements at the BIPM and the NIST using the air-kerma standards and two NIST reference-class transfer ionization standards. Reference beam qualities...

The major technical issues regarding the calibration of Surface Scanning Inspection Systems (SSIS) are presented including descriptions of the salient features of SSISs and the deposition system using the differential mobility analyzer. The role of the NIST SRM 1963 (100 nm) as a calibration standard is discussed. Data from round robin experiments, which NIST has helped the SEMI SSIS Task Forc...

O uso softwares como Microsoft Excel ou LibreOffice Calc para ensinar e exemplificar exercícios envolvendo modelos termodinâmicos é de fácil implementação em sala aula. Dessa forma, o objetivo do presente estudo foi avaliar a densidade dióxido carbono (CO2) estado supercrítico através 4 equações distintas (Peng-Robinson, Redlich–Kwong, Soave Redlich–Kwong van der Waals) dos parâmetros temperatu...