Wyniki wyszukiwania - BazTech

1

Designing medical production rules from semantically integrated data

Jankowska B., Szymkowiak M.

Journal of Medical Informatics & Technologies

|

2010

|

Vol. 16

95--102

EN

In the paper an algorithm for automatic knowledge acquisition is proposed. The knowledge is acquired from aggregate data stored in different repositories. The algorithm operates by means of semantic data integration, allowing both syntax and semantic differences between data coming from different sources. If only we know data taxonomies, can interpret data schemas and design schema mappings, then the differences are not an obstacle to integration. The acquired knowledge is being defined in a form of production rules with uncertainty. The considerations are illustrated with medical examples.

2

Koncepcja Elastycznego Systemu Sieciowych Usług Rekomendacyjnych

Marciniak A.

Inżynieria Rolnicza

|

2010

|

R. 14, nr 5

159-164

PL

W pracy przedstawiono koncepcję elastycznego systemu sieciowych usług rekomendacyjnych. Usługi rekomendacyjne są rodzajem usług informacyjnych świadczonych również przez systemy doradztwa rolniczego. Zakłada się, że algorytm tworzący ranking rekomendowanych produktów będzie powstawał w wyniku maszynowego uczenia na zweryfikowanych danych. Aplikacja modelująca taki algorytm może być wykonana w technologii typowej dla sieciowych baz wiedzy. Problemem jest to, że aktualne systemy sieciowych usług informacyjnych są niewystarczająco odporne na zakłócenia w dostępie do danych, z których syntetyzowana jest usługa. Stąd pomysł uelastycznienia systemu poprzez semantyczną integrację zasobów sieciowych.

EN

The work presents the conception of the flexible system of network recommendation services. Recommendation services are a kind of information services provided also by agricultural consultancy services. It is assumed that the algorithm creating the ranking of recommended products will be formed as a result of machine learning on the basis of verified data. The application modelling such an algorithm can be created in a technology which is characteristic of network knowledge bases. The problem is that current systems of network information services are insufficiently resistant to interruptions of access to data from which the service is synthesized. Consequently, an idea of making the system more flexible through semantic integration of network resources was created.

3

Schema mapping and query reformulation in peer-to-peer XML data integration system

Pankowski T.

Control and Cybernetics

|

2009

|

Vol. 38, no 1

173-192

EN

In the paper we discuss the problem of XML data integration in a P2P environment. In this setting each peer stores schema of its local data, mappings between the schema and schemas of some other peers (peer's partners), and schema constraints. The goal of the integration is to answer the queries formulated against arbitrarily chosen peers. The answer consists of data stored in the queried peer as well as data of its direct and indirect partners. We focus on denning and using mappings, schema constraints, and query reformulation in such scenario. We discuss a strategy that allows us to obtain a complete answer with the possibility of discovering missing values. The method is the theoretical foundation of the implementation of SixP2P system (Semantic Integration of XML data in P2P environment).