Some Approaches for Russian Speech Recognition

In this paper we present an overview of the state-of-the-art approaches for speech recognition of the Russian language. Since Russian is a highly inflective language with a complex mechanism of word formation, the main approaches for English speech recognition are not optimally applicable for Russian speech, at least directly and without appropriate adaptation. We make here an overview of some modern methods designed specially for Russian and other languages with similar word formation mechanism and grammar basis. Among them there are morpheme based speech recognition and compound language modeling. We also describe here our direction for possible subsequent Russian speech recognizer improvements.