Auflistung nach Autor:in "Keberle, Natalya"
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- KonferenzbeitragAn approach to dynamic ontology modification in mediator service-oriented information systems(Information Systems Technology and its Applications, international conference ISTA'2001, 2001) Keberle, Natalya; Ermolayev, VadimThe paper proposes the approach to cope with the maintenance of dynamically changing resource ontologies of autonomously maintained, distributed, heterogeneous, wrapped information resources and their mappings to common mediator IS ontology. The approach intends to do the work in economical way reducing efforts to matching and aligning only modified ontology elements. Proposed is ontology model comprising both descriptive part and the set of modification primitives for each ontology structural element. The set of ontology modification invariants and the corresponding set of modification conflicts resolution rules are formulated for taxonomies. The way to provide IS services for ontology changes monitoring, matching and alignment is outlined.
- KonferenzbeitragCapturing semantics from search phrases: Incremental user personification and ontology-driven query transformation(2003) Ermolayev, Vadim; Keberle, Natalya; Plaksin, Sergey; Vladimirov, VladimirReported is the methodology of the semantic transformation of an initial user's search query in the form of key words or key phrases to the resulting query composed of the relevant concepts of the domain ontology. Transformation methodology is based on incremental user profiling. The mapping of a user's keywords to the concepts of the domain ontology is built according to the presented transformation rules. These rules are based on the usage of the rich set of the semantic relationships comprising subsumption, synonymy, instantiation and meronymy provided as the DAML+OIL ontology. ACM research papers domain is chosen for the methodology evaluation. Transformation algorithm is implemented in the research prototype as the combined capability of the query transformation agent and the ontology agent of the intelligent multi-agent information retrieval mediator1.
- KonferenzbeitragEvaluating PSI Ontologies by Mapping to the Common Sense(Information systems technology and its applications – 6th international conference – ISTA 2007, 2007) Keberle, Natalya; Ermolayev, Vadim; Matzke, Wolf-EkkehardThe paper presents the results of mapping of PSI Ontologies family to the foundational ontologies: WordNet, SUMO and DOLCE. The two main outcomes of the presented research are: reported manual technique may be used as initial evaluation of ontology claiming to be a golden standard for a new domain; and: usage of mentioned foundational ontologies for alignment of ontologies family of a given domain has shown differences between SUMO and DOLCE, two formal upper-level ontologies of common sense knowledge. The research reported was performed in the frame of our PSI project1.
- KonferenzbeitragA generic ontology of rational negotiation(Information Systems Technology and its Applications, 5th International Conference ISTA 2006, 2006) Ermolayev, Vadim; Keberle, NatalyaThe paper presents the generic conceptual framework for modeling rational negotiation processes. The central piece of the presented work is the upper-level negotiation ontology. This ontology is designed to be capable to model the arbitrary types of negotiation dialogues by providing the upper-level namespace for that. The models of the specific negotiation types refine this namespace by providing the instances of its concepts, applying additional restrictions on the properties, possibly adding new subclasses and properties. The approach to model negotiations with the Generic Negotiation Ontology (GNO) is initially evaluated by applying to contracting negotiation type. The choice of the negotiation type for the evaluation is suggested by the fact that contracting negotiations are the typical encounters among the agents taking part in the simulation of a Dynamic Engineering Design Process (DEDP). This modeling activity is performed in the frame of our PSI project1.
- KonferenzbeitragOntology-driven sub-query extraction for distributed autonomous information resources in UnIT-Net IEDI(Information systems technology and its applications, 3rd international conference ISTA'2004, 2004) Ermolayev, Vadim; Keberle, Natalya; Shapar, Vladimir; Vladimirov, VladimirThe paper reports on the development of UnIT-Net1 Infrastructure for Electronic Data Interchange (IEDI). The main task of IEDI is to provide a uniform framework for authorized and secure information retrieval from heterogeneous, distributed, autonomous Information Resources (IRs) among the higher educational establishments and state bodies in Ukraine. The focus of the paper is the algorithm for ontology-driven sub-query extraction. The algorithm performs terminological mapping of an initial query in terms of domain ontology to the set of the sub-queries to different IRs in terms of respective IR ontologies. Mapping procedure is based on the raw mappings knowledge taken from mediator mapping ontology and the so called Late Binding technique for determining concepts. Finally, sub-queries are refined to become correct RDQL queries with respect to the specific IR. This algorithm will be used by IEDI mediator to decompose the user queries. Sub-queries will then be executed by the wrappers of the respective IRs. Initial proof-of-concept evaluation and the semi-formal proofs of ontologydriven sub-query extraction algorithm correctness are provided in the discussion part of the paper.