4,802 research outputs found
A note on the extended dToda hierarchy
We give a derivation of dispersionless Hirota equations for the extended
dispersionless Toda hierarchy. We show that the dispersionless Hirota equations
are nothing but a direct consequence of the genus-zero topological recursion
relation for the topological model. Using the dispersionless Hirota
equations we compute the two point functions and express the result in terms of
Catalan number.Comment: Latex, 16 page
Binary Darboux-Backlund Transformations for the Manin-Radul Super KdV Hierarchy
We construct the supersymmetric extensions of the Darboux-Backlund
transformations (DBTs) for the Manin-Radul super KdV hierarchy using the
super-pseudo-differential operators. The elementary DBTs are triggered by the
gauge operators constructed from the wave functions and adjoint wave functions
of the hierarchy. Iterating these elementary DBTs, we obtain not only Wronskian
type but also binary type superdeterminant representations of the solutions.Comment: 14 pages, Revtex, no figures, some typos corrected, two references
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Simulating dysarthric speech for training data augmentation in clinical speech applications
Training machine learning algorithms for speech applications requires large,
labeled training data sets. This is problematic for clinical applications where
obtaining such data is prohibitively expensive because of privacy concerns or
lack of access. As a result, clinical speech applications are typically
developed using small data sets with only tens of speakers. In this paper, we
propose a method for simulating training data for clinical applications by
transforming healthy speech to dysarthric speech using adversarial training. We
evaluate the efficacy of our approach using both objective and subjective
criteria. We present the transformed samples to five experienced
speech-language pathologists (SLPs) and ask them to identify the samples as
healthy or dysarthric. The results reveal that the SLPs identify the
transformed speech as dysarthric 65% of the time. In a pilot classification
experiment, we show that by using the simulated speech samples to balance an
existing dataset, the classification accuracy improves by about 10% after data
augmentation.Comment: Will appear in Proc. of ICASSP 201
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