منابع مشابه
Sequence to Sequence Training of CTC-RNNs with Partial Windowing
Connectionist temporal classification (CTC) based supervised sequence training of recurrent neural networks (RNNs) has shown great success in many machine learning areas including endto-end speech and handwritten character recognition. For the CTC training, however, it is required to unroll (or unfold) the RNN by the length of an input sequence. This unrolling requires a lot of memory and hinde...
متن کاملSequence to Sequence Training of CTC-RNNs with Partial Windowing – Supplementary Material –
Appendices A. Derivation of the CTC-EM Equations In the maximization step, the objective is to obtain the derivative of Q τ (w|x, z, w (n)) with respect to the input of the softmax layer, a t k , at time t. We first differentiate Q τ with respect to y t k at w = w (n) : ∂Q τ (w|x, z, w (n)) ∂y t k w=w (n) = |z| m=0 p(z 1:m |Z, x 1:τ , w (n)) ∂ ln p(z 1:m |x 1:τ , w (n)) ∂y t k. (1) With Bayes' ...
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We compare the performance of a recurrent neural network with the best results published so far on phoneme recognition in the TIMIT database. These published results have been obtained with a combination of classifiers. However, in this paper we apply a single recurrent neural network to the same task. Our recurrent neural network attains an error rate of 24.6%. This result is not significantly...
متن کاملPhone Synchronous Decoding with CTC Lattice
Connectionist Temporal Classification (CTC) has recently shown improved efficiency in LVCSR decoding. One popular implementation is to use a CTC model to predict the phone posteriors at each frame which are then used for Viterbi beam search on a modified WFST network. This is still within the traditional frame synchronous decoding framework. In this paper, the peaky posterior property of a CTC ...
متن کاملLinear Cryptanalysis of CTC
CTC is a toy cipher designed by Courtois in order to prove the strength of algebraic attacks. In this paper we study the differential and the linear behavior of the 85 S-boxes version, which is attacked using algebraic techniques faster than exhaustive key search. We show that an n-round variant of the cipher can be attacked by a linear attack using only 2 known plaintexts, with a negligible ti...
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ژورنال
عنوان ژورنال: Distill
سال: 2017
ISSN: 2476-0757
DOI: 10.23915/distill.00008