منابع مشابه
User - De ned Association
Discovering interesting associations of events is an important data mining task. In many real applications, the notion of association, which deenes how events are associated, often depends on the particular application and user requirements. This motivates the need for a general framework that allows the user to specify the notion of association of his/her own choices. In this paper we present ...
متن کاملUser - De ned Aggregates in Database
User-deened aggregates can be the linchpin of sophisticated datamining functions and other advanced database applications , but they nd little support in current database systems including Object-Relational databases. Three serious limitations of current databases are (i) the inability of introducing new aggregates (e.g., by coding them in a procedural language as proposed in SQL3), (ii) the in...
متن کاملUser - De ned Aggregates for DataminingHaixun
User-deened aggregates can be the linchpin of sophisticated datamining functions and other advanced database applications. This is demonstrated by our eecient implementation on DB2 of SQL3 user-deened aggregates extended with early returns, which we have used to implement several data mining algorithms. Aggregates with early returns are monotonic and can thus be used freely in recursive queries.
متن کاملEvolving Control Structures with Automatically De ned
Koza has previously shown that the power of a genetic programming system can often be enhanced by allowing for the simultaneous evolution of a main program and a collection of automatically deened functions (ADFs). In this paper I show how related techniques can be used to simultaneously evolve a collection of automatically deened macros (ADMs). I show how ADMs can be used to produce new contro...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Tidsskrift for omsorgsforskning
سال: 2019
ISSN: 2387-5984,2387-5976
DOI: 10.18261/issn.2387-5984-2019-02-03