Patent ID: 7353226

Claim:
A method for schema matching with data dictionaries performed on a computing device, the method comprising: generating lexical graphs for at least two data dictionaries, the lexical graphs including terms with definitions and identified links between terms; determining matches between the generated lexical graphs, the determining including applying respective weighting values to terms within the lexical graphs, the respective weighting values calculated as a product of a corresponding term certainty and a corresponding term informativeness, wherein each term certainty is based on an entropy function, and wherein each term informativeness is based on a logarithmic function; and wherein: the entropy function is of the form: H ⁡ ( W ) = - ∑ w ∈ V ⁡ ( W ) ⁢ ⁢ P ⁡ ( w ) ⁢ log ⁢ ⁢ P ⁡ ( w ) ; ⁢ and the logarithmic function is of the form: I ⁡ ( w ) = log ⁡ [ n - log ⁡ [ f ⁡ ( w ) df ⁡ ( w ) ] ] ; ⁢ and presenting determined matches by way of an image displayed on an output device.