SUBJECT COMPOSITION OF RELATIONS ARISING WHEN USING GENOME INFORMATION

Subject Composition by Roles

Subjects model diierent perspectives on a problem domain by collections of related class hierarchies. Subjects can be seen as the result of separate and possibly independent development processes for partial models. The subjects can be eeciently composed by a technique that builds on the notion of roles. The composition allows already combined subjects to be further combined or to be dissolved ...

Suggesting Subject Headings Using Web Information Sources

We proposed a method that suggests subject headings based on user queries when a pattern-matching algorithm fails to locate subject searches for Online Public Access Catalogs (OPAC). We combined information obtained from Wikipedia, Amazon, and Google for query expansion. Our method has two main advantages: (1) availability for any library without customizing OPACs, and (2) ability to suggest su...

Relations between Renyi Distance and Fisher Information

In this paper, we first show that Renyi distance between any member of a parametric family and its perturbations, is proportional to its Fisher information. We, then, prove some relations between the Renyi distance of two distributions and the Fisher information of their exponentially twisted family of densities. Finally, we show that the partial ordering of families induced by Renyi dis...

Composition of Database Relations

The “standard” method of implementing composition is to perform join and projection as one combined operation and then to remove the duplicates from the result of this operation as a separate step. When a hash-based or sort-merge algorithm is used for the join operation and the size of the result is large, duplicates cannot be eliminated at the same time the join is being performed. In this pap...

Treasuring identity : subject-object relations in Beowulf