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ICASSP
2011
IEEE
14 years 8 months ago
Factored covariance modeling for text-independent speaker verification
Gaussian mixture models (GMMs) are commonly used to model the spectral distribution of speech signals for text-independent speaker verification. Mean vectors of the GMM, used in c...
Eryu Wang, Kong-Aik Lee, Bin Ma, Haizhou Li, Wu Gu...
INFOCOM
2011
IEEE
14 years 8 months ago
Fine-grained location-free planarization in wireless sensor networks
—Extracting planar graph from network topologies is of great importance for efficient protocol design in wireless ad hoc and sensor networks. Previous techniques of planar topol...
Dezun Dong, Yunhao Liu, Xiangke Liao, Xiang-Yang L...
PERCOM
2011
ACM
14 years 8 months ago
Privacy preservation schemes for querying wireless sensor networks
—In this work we study the problem of query privacy in large scale sensor networks. Motivated by a novel trust model in which clients query networks owned by trusted entities but...
Tassos Dimitriou, Ahmad Sabouri
EUROSYS
2011
ACM
14 years 8 months ago
Scarlett: coping with skewed content popularity in mapreduce clusters
To improve data availability and resilience MapReduce frameworks use file systems that replicate data uniformly. However, analysis of job logs from a large production cluster show...
Ganesh Ananthanarayanan, Sameer Agarwal, Srikanth ...
EUROSYS
2011
ACM
14 years 8 months ago
Increasing performance in byzantine fault-tolerant systems with on-demand replica consistency
Traditional agreement-based Byzantine fault-tolerant (BFT) systems process all requests on all replicas to ensure consistency. In addition to the overhead for BFT protocol and sta...
Tobias Distler, Rüdiger Kapitza