Table of Contents

 1     Scope            
 2     References 
 3     Definitions  
        3.1     Terms defined elsewhere            
        3.2     Terms defined in this Recommendation  
 4     Abbreviations and acronyms 
 5     Conventions
 6     Introduction
        6.1     Basic concept of speech interface and NLP technology       
        6.2     Advanced technology for dialogue-based speech interface
 7     Requirements for language learning system    
 8     Functional components and interfaces of a language learning system      
        8.1     Speech recognition module         
        8.2     Natural language processing module       
        8.3     Speech synthesis module             
        8.4     Pronunciation fluency evaluation module
        8.5     Dialogue processing module       
        8.6     Dialogue understanding evaluation module           
        8.7     Dialogue knowledge learning module       
        8.8     Language learning module