Papers › On Evaluating the Generalization of LSTM Models in Formal Languages
On Evaluating the Generalization of LSTM Models in Formal Languages
Mirac Suzgun, Yonatan Belinkov, Stuart M. Shieber
Recurrent Neural Networks (RNNs) are theoretically Turing-complete and established themselves as a dominant model for language processing. Yet, there still remains an uncertainty regarding their language learning capabilities. In this paper, we empirically evaluate the inductive learning capabilities of Long Short-Term Memory networks, a popular extension of simple RNNs, to learn simple formal languages, in particular aⁿbⁿ, aⁿbⁿcⁿ, and aⁿbⁿcⁿdⁿ. We investigate the influence of various aspects of learning, such as training data regimes and model capacity, on the generalization to unobserved samples. We find striking differences in model performances under different training settings and highlight the need for careful analysis and assessment when making claims about the learning capabilities of neural network models.
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