کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
404506 677431 2008 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A model for learning to segment temporal sequences, utilizing a mixture of RNN experts together with adaptive variance
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر هوش مصنوعی
پیش نمایش صفحه اول مقاله
A model for learning to segment temporal sequences, utilizing a mixture of RNN experts together with adaptive variance
چکیده انگلیسی

This paper proposes a novel learning method for a mixture of recurrent neural network (RNN) experts model, which can acquire the ability to generate desired sequences by dynamically switching between experts. Our method is based on maximum likelihood estimation, using a gradient descent algorithm. This approach is similar to that used in conventional methods; however, we modify the likelihood function by adding a mechanism to alter the variance for each expert. The proposed method is demonstrated to successfully learn Markov chain switching among a set of 9 Lissajous curves, for which the conventional method fails. The learning performance, analyzed in terms of the generalization capability, of the proposed method is also shown to be superior to that of the conventional method. With the addition of a gating network, the proposed method is successfully applied to the learning of sensory–motor flows for a small humanoid robot as a realistic problem of time series prediction and generation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neural Networks - Volume 21, Issue 10, December 2008, Pages 1466–1475
نویسندگان
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