To My Parents iv ACKNOWLEDGEMENTS I express my sincere gratitude to HIM for everything. I extend my sincere thanks to my advisor Prof. Cassiano R. E. de Oliveira, working with whom was a very pleasing experience, both personally and intellectually. I appreciate his help in guiding me in learning new subject matters. I would also like to thank Ryosuke, whom I bothered the most while trying to un...

Several techniques exist to select and materialize a proper set of data in a suitable structure that manage the queries submitted to the online analytical processing systems. These techniques are called view management techniques, which consist of three research areas: 1) view selection to materialize, 2) query processing and rewriting using the materialized views, and 3) maintaining materializ...

Most existing approaches address multi-view subspace clustering problem by constructing the affinity matrix on each view separately and afterwards propose how to extend spectral clustering algorithm to handle multi-view data. This paper presents an approach to multi-view subspace clustering that learns a joint subspace representation by constructing affinity matrix shared among all views. Relyi...

Previous work describes the use of formal commitments to mediate the communication between autonomous agents through commitment-based protocols. I extend that work to examine the conditions that encourage the success of agents that use commitments. I define a parameterized and iterated Committer’s Dilemma game that extends the well-known Prisoner’s Dilemma game, and then use this game and diffe...

One method to solve topology optimization problems is the topological derivative. This approach has some drawbacks: it is limited to simple problems, we do not know how to fill holes, ... To overcome these limitations, an extension of the adjoint method is presented. Named the numerical vault, it allows us to consider new fields of applications and to explore new theoretical investigations in t...