Titlebook: Database and Expert Systems Applications; 17th International C Stéphane Bressan,Josef Küng,Roland Wagner Conference proceedings 2006 Spring

B-cell

提升

瘙痒

Rewriting Queries for XML Integration Systems A user poses a query over the target schema, and the system rewrites the query into a set of queries over the data sources. Existing algorithms generate a set of static rules based on the target schema and mappings, and rewrite the target query using these rules. We design a flexible and dynamic ap

注射器

做作

Visual Specification and Optimization of XQuery Using VXQbecoming a standard for querying such systems. However, the complexity of XQuery prevents its usage by broad audience. This paper proposes a visual XQuery specification language called VXQ to address this issue. By intuitive abstractions of XML and XQuery, the proposed system can generate XQueries f

circuit

天真

monopoly

Evaluation of a Probabilistic Approach to Classify Incomplete Objects Using Decision Treesod, proposed by Lobo and Numao in 2000, which builds a decision tree for each attribute and uses these trees to fill the missing attribute values. Both our approach and theirs are based on the Mutual Information between the attributes and the class. Our method takes the dependence between attributes

细颈瓶

Blasphemy