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SO2DB

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Information about SO2DB
Education

Published on February 6, 2008

Author: Marietta1

Source: authorstream.com

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SO2DB From Symbolic Objects to Database Donato Malerba – University of Bari, Italy 6-8 October 2003:  SO2DB From Symbolic Objects to Database Donato Malerba – University of Bari, Italy 6-8 October 2003 SO 2DB:  SO 2DB The goal of SO2DB module is that of retrieving individuals with some characteristics described by a set of SO’s in a relational database and of storing them in a database table. SO2DB: INPUT/OUTPUT:  SO2DB: INPUT/OUTPUT INPUT  - sds or xml file containing symbolic objects - Access Database OUTPUT  an Access Database table reporting the name of selected symbolic variables and one record for “single” matching or one record for “multiple” matchings, according the user selected option SO2DB Goal:  SO2DB Goal …graphically SO2DB: input / output:  Users choose an input SODAS file, from which they select one or more SO’s, and composing/storing/retrieving/modifying a query (stored in a XML file) for the description of individuals. SO2DB: input / output Retrieved individuals are stored in a relational database table. Compute the extension of a SO (SOs), which was originally defined on a set , on another set ' (possibly coincident with ) of individuals. Possible if the variable used to described the individuals on ' allow to compute the extension of the SO (Sos). SO2DB: Matching operators:  SO2DB: Matching operators SO Canonical Matching Flexible Matching Boolean Probabilistic Boolean The user may introduce a threshold T[0, 1[ that represents the degree of flexible matching. Retrieved individuals are those whose degree of match against the selected SO’s is greater than or equal to T. retrieved individuals are those whose canonical matching against selected SO returns 1 Slide7:  An Example… ' SO  [maker_name  {Audi,Bmw}]  [type_fuel  {Gas, Diesel}]  [body_style  {wagon,sedan}] Slide8:  SO  [maker_name  {Audi,Bmw}]  [type_fuel  {Gas, Diesel}]  [body_style  {wagon,sedan}] We can calculate the extension of A on ' through the SQL query SELECT * FROM Car WHERE make = “Audi” OR make = “Bmw” AND fueltype = “Gas” OR fueltype = “Diesel” AND bodystyle = “wagon” OR bodystyle = “sedan”; … An Example … Slide9:  … An Example     ' SO2DB: Matching operators:  SO2DB: Matching operators Slide11:  Solution: Select a set of SO’s; Determine the set ' through a database query; Establish the association variable names-database attributes; Select a matching function. Compute matching A GUI is developed to support users in propagating SO to DB

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