Alberto Sardinha

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Existing supply chain management practices consist primarily of static interactions between established partners. Global competition, shorter product life cycles and the emergence of Internet-mediated business solutions create an incentive for exploring more dynamic supply chain practices. The Supply Chain Trading Agent Competition (TAC SCM) was designed to(More)
The Supply Chain Trading Agent Competition (TAC SCM) was designed to explore approaches to dynamic supply chain trading. During the course of each year's competition historical data is logged describing more than 800 games played by different agents from around the world. In this paper, we present analysis that is fo-cused on determining which features of(More)
This paper addresses the problem of ad hoc teamwork, where a learning agent engages in a cooperative task with other (unknown) agents. The agent must effectively coordinate with the other agents towards completion of the intended task, not relying on any pre-defined coordination strategy. We contribute a new perspective on the ad hoc teamwork problem and(More)
The platform for the procurement challenge is based on the baseline Supply Chain Trading Agent Competition game originally designed by Carnegie Mellon's e-Supply Chain Management Laboratory in collaboration with the Swedish Institute of Computer Science (SICS). The game was later refined with the help of the University of Minnesota. The first four authors,(More)
This document contains the specifications of the 2007 Supply Chain Trading Agent Competition – Procurement Challenge (SCM-PC-07). The Challenge revolves around a PC assembly scenario, where trading agents developed by different teams compete for components required to assemble different types of PCs. The Challenge requires agents to manage supply chain risk(More)
Characters that cross dimensions have elicited an avid interest in literature and cinema. In analogy to these characters, we explore the concept of migration: process by which an agent moves between embodiments, being active in only one at a time. We developed an autonomous artificial pet with two embodiments: a virtual within a smartphone and a physical(More)
One of the aims of Aspect-Oriented Requirements Engineering is to address the composability and subsequent analysis of crosscutting and non-crosscutting concerns during requirements engineering. A composition definition explicitly represents interdependencies and interactions between concerns. Subsequent analysis of such compositions helps to reveal(More)
There is increasing demand from both organizations and individuals for technology capable of enforcing sophisticated, context-sensitive policies, whether security and privacy policies, corporate policies or policies reflecting various regulatory requirements. In open environments, enforcing such policies requires the ability to reason about the policies(More)
The Supply Chain Trading Agent Competition (TAC SCM) was designed to explore approaches to dynamic supply chain trading. During the course of each year's competition historical data is logged describing more than 800 games played by different agents from around the world. In this paper, we present analysis that is focused on determining which features of(More)
Early aspects are crosscutting concerns that are identified and addressed at the requirements and architecture level, while code aspects are crosscutting concerns that manifest at the code level. Currently, there are many approaches to address the identification and modularization of these cross-cutting concerns at each level, but very few techniques try to(More)