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Proceedings ArticleDOI

Connectionist temporal classification: labelling unsegmented sequence data with recurrent neural networks

TLDR
This paper presents a novel method for training RNNs to label unsegmented sequences directly, thereby solving both problems of sequence learning and post-processing.
Abstract
Many real-world sequence learning tasks require the prediction of sequences of labels from noisy, unsegmented input data. In speech recognition, for example, an acoustic signal is transcribed into words or sub-word units. Recurrent neural networks (RNNs) are powerful sequence learners that would seem well suited to such tasks. However, because they require pre-segmented training data, and post-processing to transform their outputs into label sequences, their applicability has so far been limited. This paper presents a novel method for training RNNs to label unsegmented sequences directly, thereby solving both problems. An experiment on the TIMIT speech corpus demonstrates its advantages over both a baseline HMM and a hybrid HMM-RNN.

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Proceedings ArticleDOI

On Vocabulary Reliance in Scene Text Recognition

TL;DR: Zhang et al. as mentioned in this paper established an analytical framework, in which different datasets, metrics and module combinations for quantitative comparisons are devised, to conduct an in-depth study on the problem of vocabulary reliance in scene text recognition.
Proceedings ArticleDOI

Exploring Pre-Training with Alignments for RNN Transducer Based End-to-End Speech Recognition

TL;DR: Two different pre-training solutions are explored, referred to as encoder pre- Training, and whole-network pre- training respectively, which significantly reduce the RNN-T model latency from the baseline.
Posted Content

Unconstrained Scene Text and Video Text Recognition for Arabic Script

TL;DR: In this article, an end-to-end trainable CNN-RNN hybrid architecture was proposed for Arabic text recognition in videos and natural scenes, which outperformed previous state-of-the-art on two publicly available video text datasets - ALIF and ACTIV.
Journal ArticleDOI

MSP-MFCC: Energy-Efficient MFCC Feature Extraction Method With Mixed-Signal Processing Architecture for Wearable Speech Recognition Applications

TL;DR: By using the features extracted by the proposed Mixed-Signal Processing (MSP) architecture, speech recognition simulation reaches the accuracy of 98.2%, which also keeps the leading performance to its current counterparts.
Proceedings ArticleDOI

Where to apply dropout in recurrent neural networks for handwriting recognition

TL;DR: This paper shows that further improvement can be achieved by implementing dropout differently, more specifically by applying it at better positions relative to the LSTM units.
References
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Journal ArticleDOI

Long short-term memory

TL;DR: A novel, efficient, gradient based method called long short-term memory (LSTM) is introduced, which can learn to bridge minimal time lags in excess of 1000 discrete-time steps by enforcing constant error flow through constant error carousels within special units.
Journal ArticleDOI

A tutorial on hidden Markov models and selected applications in speech recognition

TL;DR: In this paper, the authors provide an overview of the basic theory of hidden Markov models (HMMs) as originated by L.E. Baum and T. Petrie (1966) and give practical details on methods of implementation of the theory along with a description of selected applications of HMMs to distinct problems in speech recognition.
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Neural networks for pattern recognition

TL;DR: This is the first comprehensive treatment of feed-forward neural networks from the perspective of statistical pattern recognition, and is designed as a text, with over 100 exercises, to benefit anyone involved in the fields of neural computation and pattern recognition.
Proceedings Article

Conditional Random Fields: Probabilistic Models for Segmenting and Labeling Sequence Data

TL;DR: This work presents iterative parameter estimation algorithms for conditional random fields and compares the performance of the resulting models to HMMs and MEMMs on synthetic and natural-language data.
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