Representation Learning of Logic Words by an RNN: From Word Sequences to Robot Actions

Frontiers in Neurorobotics
Tatsuro YamadaTetsuya Ogata

Abstract

An important characteristic of human language is compositionality. We can efficiently express a wide variety of real-world situations, events, and behaviors by compositionally constructing the meaning of a complex expression from a finite number of elements. Previous studies have analyzed how machine-learning models, particularly neural networks, can learn from experience to represent compositional relationships between language and robot actions with the aim of understanding the symbol grounding structure and achieving intelligent communicative agents. Such studies have mainly dealt with the words (nouns, adjectives, and verbs) that directly refer to real-world matters. In addition to these words, the current study deals with logic words, such as "not," "and," and "or" simultaneously. These words are not directly referring to the real world, but are logical operators that contribute to the construction of meaning in sentences. In human-robot communication, these words may be used often. The current study builds a recurrent neural network model with long short-term memory units and trains it to learn to translate sentences including logic words into robot actions. We investigate what kind of compositional representations, which...Continue Reading

References

Oct 23, 1997·Neural Computation·S Hochreiter, J Schmidhuber
Aug 13, 2002·Artificial Life·Simon Kirby
Jan 29, 2011·Neural Networks : the Official Journal of the International Neural Network Society·Wataru HinoshitaTetsuya Ogata
Oct 27, 2011·PLoS Computational Biology·Jun NamikawaJun Tani
Mar 6, 2012·Neural Networks : the Official Journal of the International Neural Network Society·Francesca StramandinoliAngelo Cangelosi
May 4, 2012·Neural Networks : the Official Journal of the International Neural Network Society·Jean-Philippe ThiviergeMichael Geourgiopoulos
Feb 20, 2014·Frontiers in Behavioral Neuroscience·Junpei ZhongStefan Wermter

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Citations

Jun 1, 2021·Frontiers in Neurorobotics·Ioanna GiorgiGiovanni L Masala

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Methods Mentioned

BETA
PCA

Software Mentioned

HIT
R
SLOWLY

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