Munehiko Sasajima

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Although a lot of researchers have pointed out the signicance of functional representation, the general relations between function and behavior is not fully understood yet. We consider the knowledge of each component in a system as consisting of two elements. One is a necessary and sucient information for simulation of the component which we call behavior.(More)
This paper proposes a metadata schema relating to func-tionality based on Semantic Web technology for the management of the information content of engineering design documents. The schema enables us to annotate web-documents with RDF metadata, which represents devices as having specific functions. The metadata provide a clear and operational semantics for(More)
Ten years have passed since the concept of the semantic web was proposed by Tim Berners-Lee. For these years, basic technologies for them such as RDF(S) and OWL were published. As a result, many systems using semantic technologies have been developed. Some of them are not prototype systems for researches but real systems for practical use. The authors(More)
As a step to realize usable mobile internet services , this paper proposes a task ontology-based description method for the model of mobile phone users. The new method supports the description of users' activity and related knowledge such as planning, prevention method for accidents and how to solve problems that occurs on the users. Such models contribute(More)
This paper presents a new parsing algorithm, BTH, which is capable of efficiently parsing a keyword lattice that contains a large number of false alarms. The BTH parser runs without unfolding the given keyword lattice, and thus it can efficiently obtain a set of word sequences acceptable to the given grammar as the parser result. The algorithm has been(More)
This paper discusses ontology mapping between two taxonomies of functions of artifacts for the engineering knowledge management. The mapping is of two ways and has been manually established with deep semantic analysis based on a reference ontology of function for bridging the ontological gaps between the taxonomies. We report on the successful results(More)
Voice interfaces are not popular since they are neither useful nor user-friendly for non-specialist users. In this paper, EUROPA, a new framework for developing spoken dialogue systems, is introduced. In developing EUROPA, the authors focused on three points : (1) acceptance of spoken language, (2) portability in terms of domain and task, and (3) practical(More)
Growth in the mobile internet services industry has seen a marked increase in the number of mobile internet services provided, and this has made proper structuring and organization of the services difficult. Present methods of service provision have proven insufficient to guide users efficiently to the services they need. To solve this problem, a(More)
For the improvement of usability of mobile internet services for mobile handsets based on the semantic web technology, one of promising ways is to realize task-oriented menu system which enables users search for mobile internet services by "what they want to do", not by "name of the category". To realize such task-oriented menu system, this paper proposes a(More)