Download Automatic Speech and Speaker Recognition: Large Margin and by Joseph Keshet, Samy Bengio PDF

By Joseph Keshet, Samy Bengio

This e-book discusses huge margin and kernel tools for speech and speaker attractiveness

Speech and Speaker reputation: huge Margin and Kernel tools is a collation of analysis within the fresh advances in huge margin and kernel equipment, as utilized to the sector of speech and speaker acceptance. It provides theoretical and sensible foundations of those equipment, from aid vector machines to massive margin tools for based studying. It additionally presents examples of enormous margin established acoustic modelling for non-stop speech recognizers, the place the grounds for functional huge margin series studying are set. huge margin tools for discriminative language modelling and textual content autonomous speaker verification also are addressed during this publication.

Key gains:

  • Provides an updated photo of the present country of analysis during this box
  • Covers very important facets of extending the binary aid vector computer to speech and speaker popularity functions
  • Discusses huge margin and kernel technique algorithms for series prediction required for acoustic modeling
  • Reviews previous and current paintings on discriminative education of language types, and describes varied huge margin algorithms for the appliance of part-of-speech tagging
  • Surveys contemporary paintings at the use of kernel techniques to text-independent speaker verification, and introduces the most thoughts and algorithms
  • Surveys fresh paintings on kernel ways to studying a similarity matrix from information

This publication could be of curiosity to researchers, practitioners, engineers, and scientists in speech processing and laptop studying fields.

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Extra resources for Automatic Speech and Speaker Recognition: Large Margin and Kernel Methods

Sample text

Initially, we set α 1 = 0. At iteration t, we define wt = 1 λm m j =1 αjt yj φ(xj ). Choose i ∈ [m] uniformly at random and let \i wt = wt − 1 t 1 α yi φ(xi ) = λm i λm j =i αjt yj φ(xj ). We can rewrite the dual objective function as follows: D(α) = = 1 m m αj − j =1 λ \i 1 w + αi yi φ(xi ) 2 t λm αi \i 1 − yi wt , φ(xi ) m − 2 φ(xi ) 2 2 α + C, 2λm2 i where C does not depend on αi . Optimizing D(α) with respect to αi over the domain [0, 1] gives the update rule αit +1 = max 0, min 1, \i λm(1 − yi wt , φ(xi ) ) φ(xi ) 2 .

Each prediction yˆ ∈ Yˆ naturally induces a total-order. If the pth coordinate of the vector yˆ is greater than the qth coordinate of yˆ we set the pair order (p, q) to belong to the total-order. Formally: yˆ ∈ Yˆ = Rk −→ {(p, q) : yˆ p > yˆ q }. Ties are broken arbitrarily. We will abuse the notation and think of the prediction yˆ as the total-ordering it induces, rather than a vector of k elements, and write (p, q) ∈ yˆ , which is equivalent to yˆ p > yˆ q . There is a many-to-many relation between the target space Y and the prediction space ˆ A given prediction (k dimensional vector) corresponds to some total-order, which may Y.

1 we formally define this notion and show how to easily calculate a sub-gradient for several loss functions. Following Shalev-Shwartz et al. (2007), we set ηt = (1/λ (t + 1)). Additionally, since the gradient of the function (λ/2) w 2 at wt is λwt , we can rewrite ∇t = λwt + vt , where vt is a sub-gradient of ( w, (xi ) , yi ) at wt . Therefore, the update of the SGD procedure can be written as wt +1 = 1 − 1 1 vt . 8) THEORY AND PRACTICE OF SUPPORT VECTOR MACHINES OPTIMIZATION 19 Unraveling the recursive definition of wt +1 we can also rewrite wt +1 as wt +1 = − =− 1 λ t t =1 1 t +1 1 λ (t + 1) t +1 1− j =t +2 1 1 v =− j t λ t t =1 1 t +1 t +1 j =t +2 j −1 vt j t vt .

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