Salesian Journal on Information Systems

3

Authors: Finger, M.

We show that recent known advances in Computer Science have allowed us to enter in regions of data "imensity" that we thought were unreachable. Besides, formal and precise models of specific parts of the worls that we are building are increasingly detailed and allow us to simulate more accurately both human and natural phenomena. Paradoxically, we argue that this growth both of size and precision will take us to a Computer Science that is closer to humanization.

6

Authors: BARBOSA, G. C.; SILVA, B. Z.; DALPRA, H. L. O; VILARINO, I. F., PAIVA. M. M., ARBEX, W.

Distributed computing systems are used for high performance computing tasks, taking advantage of join processing power of multiple independent computers, but they are interconnected by network. These high performance systems can be divided into two classes of distributed computing systems: computer cluster and grid computing. The FightAIDS@Home is a distributed system toward the search for solutions for the AIDS treatment, and this project is led by the Olson Laboratory, California. Nowadays, this project use computing resources of the Grid World Community Grid, which consist mostly of computers of ordinary users, using open and non-specific standard protocols and interfaces to ensure interoperability between different systems. These paper presents informations from a case study about FightAIDS@Home and its implementation, using aspects of distributed systems such as grid computer and cloud computing to support implementation of collaborative computing.

10

Authors: YOKOME, E. A.; ARANTES, F. L.

Ontologies have been used in various research areas from computer science, including data mining. This article describes the development of a domain ontology for data mining. Meta-DM ontology provides a common terminology that can be shared and processed by data mining tools. The ontology also indicates the KDD phases where human knowledge is necessary - this is its greatest differential. With ontologies as the Meta-DM, it is possible to add semantics in the data mining process in order to improve the interaction and cooperation between experts and mining systems.