Not since its decision in Wisconsin v. Mitchell, has the United States Supreme Court squarely addressed whether hate crimes legislation regulates protected speech in violation of the First Amendment.1 However, the United States House of Representatives' passage of the Local Law Enforcement Hate Crimes Prevention Act of 2007 ("House Bill 1592" or "Hate Crimes Prevention Act of 2007") on May 3, 2...

Artificial agents have been deployed in simulating social or economic phenomena in order to find optimal policy to govern agents’ society. However, with an increase of the complexity of agents’ internal behaviors as well as their social interactions, modeling social behaviors and tracking down optimal policies in mathematical form become intractable. In this paper, genetic algorithm is used to ...

We present a description of the PhD thesis which aims to propose a rule-based query answering method for relational data. In this approach we use an additional knowledge which is represented as a set of rules and describes the source data at concept (ontological) level. Queries are posed in the terms of abstract level. We present two methods. The first one uses hybrid reasoning and the second o...