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Supervised sequence labelling with recurrent neural networks. (English) Zbl 1235.68014
Studies in Computational Intelligence 385. Berlin: Springer (ISBN 978-3-642-24796-5/hbk; 978-3-642-24797-2/ebook). xiii, 143 p. (2012).
Publisher’s description: Supervised sequence labelling is a vital area of machine learning, encompassing tasks such as speech, handwriting and gesture recognition, protein secondary structure prediction and part-of-speech tagging. Recurrent neural networks are powerful sequence learning tools – robust to input noise and distortion, able to exploit long-range contextual information – that would seem ideally suited to such problems. However, their role in large-scale sequence labelling systems has so far been auxiliary.
The goal of this book is a complete framework for classifying and transcribing sequential data with recurrent neural networks only. Three main innovations are introduced in order to realise this goal. Firstly, the connectionist temporal classification output layer allows the framework to be trained with unsegmented target sequences, such as phoneme-level speech transcriptions; this is in contrast to previous connectionist approaches, which were dependent on error-prone prior segmentation. Secondly, multidimensional recurrent neural networks extend the framework in a natural way to data with more than one spatio-temporal dimension, such as images and videos. Thirdly, the use of hierarchical subsampling makes it feasible to apply the framework to very large or high resolution sequences, such as raw audio or video.

68-02 Research exposition (monographs, survey articles) pertaining to computer science
68T05 Learning and adaptive systems in artificial intelligence
68T10 Pattern recognition, speech recognition
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