We propose query optimization techniques that fully utilize the advantages ojpath indexes in object-oriented database systems. Although path indexes provide an eficient access to complex objects, little research has been done on query optimization that fully utilize path indexes. We first devise a generalized index intersection technique, adapted to the structure of the path index extended from...

We propose query optimization techniques that fully utilize the advantages of path indexes in object-oriented database systems. Although path indexes provide an eecient access to complex objects, little research has been done on query optimization that fully utilize path indexes. We rst devise a generalized index intersection technique, adapted to the structure of the path index extended from c...

The Banzhaf power index was introduced in cooperative game theory to measure the real power of players in a game. The Banzhaf interaction index was then proposed to measure the interaction degree inside coalitions of players. It was shown that the power and interaction indexes can be obtained as solutions of a standard least squares approximation problem for pseudo-Boolean functions. Considerin...

The queries defined on data warehouses are complex and use several join operations that induce an expensive computational cost. This cost becomes even more prohibitive when queries access very large volumes of data. To improve response time, data warehouse administrators generally use indexing techniques such as star join indexes or bitmap join indexes. This task is nevertheless complex and fas...

A compressed full-text self-index for a text T is a data structure requiring reduced space and able to search for patterns P in T . It can also reproduce any substring of T , thus actually replacing T . Despite the recent explosion of interest on compressed indexes, there has not been much progress on functionalities beyond the basic exact search. In this paper we focus on indexed approximate s...

PURPOSE This study examined whether any of a series of segmental and whole-word measures of articulatory competence captured more of the variance in impressionistic ratings of severity of involvement in speech delay. It also examined whether knowing the age of the child affected severity ratings. METHOD Ten very experienced speech-language pathologists rated severity of involvement from conve...

Tourism has become a very important and dynamic sector both in the world economy and particular in the developing countries. Its growth affects not only the activities directly linked to tourism but also other sectors. Tourism is already an important sector in some developing countries and will become so for others. Developing countries have been fast growing in tourism industry terms in the wo...

A comparative study was performed on the initial and final bacillary indexes of 213 multibacillary leprosy patients who received 12 doses (Group 1: 128 patients) or 24 doses (Group 2: 85 patients) of multidrug therapy (MDT/WHO) to measure the effectiveness of the two regimens. All patients were evaluated at treatment baseline, 12 months, and 24 months. The reduction in bacillary levels and mean...