INESC-ID

About: INESC-ID is a nonprofit organization based out in Lisbon, Portugal. It is known for research contribution in the topics: Computer science & Context (language use). The organization has 932 authors who have published 2618 publications receiving 37658 citations.

A media monitoring solution

Abstract: There are large amounts of information as video and audio not searchable. In a time where Business Intelligence is fundamental for all areas doing this kind of analysis only on text sources is a limiting factor. The use of large vocabulary speech recognition systems with increasing performance is giving rise to different applications. Despite the diversity, these applications share the extensive use of the contents of the transcription. In this paper we describe the results of a development project between a startup company and a research lab to build a full automatic system for monitoring TV and Radio channels. This system is composed by three main blocks: a recording block (records the selected channels in high and web streaming quality and broadcast to the next block), a processing block (generate metadata information) and a storage and accessing block (make available the metadata and videos). There is an optional block, the delivering, that could be customized according to the use and client needs. The processing block receives the video from the recording block time filtered by a scheduling interface. For that video the goal is to generate a full annotation with metadata describing the content and semantic information. This metadata make possible a filtering process for selective dissemination of information.

Performance study of interference on GPU and CPU resources with multiple applications

Abstract: In the last years, the performance and capabilities of Graphics Processing Units (GPUs) improved drastically, mostly due to the demands of the entertainment market, with consumers and companies alike pushing for improvements in the level of visual fidelity, which is only achieved with high performing GPU solutions. Beside the entertainment market, there is an ongoing global research effort for using such immense computing power for applications beyond graphics, such as the domain of general purpose computing. Efficiently combining these GPUs resources with existing CPU resources is also an important and open research task. This paper is a contribution to that effort, focusing on analysis of performance factors of combining both resource types, while introducing also a novel job scheduler that manages these two resources. Through experimental performance evaluation, this paper reports what are the most important factors and design considerations that must be taken into account while designing such job scheduler.

An Enhanced Wiki for Requirements Engineering

Abstract: The high number of unsuccessful IT projects, due to the inconsistent and ambiguous requirements specifications, justifies the proposal of new socio-technical approaches to overcome these software quality issues. To address these problems it is required a platform that simultaneously enforces Requirements Engineering best practices, fosters stakeholders' participation, and supports requirements negotiation and management. In this paper, we present the rationale and design of an enhanced Wiki for dealing with Requirements Engineering aspects, according to a CSCW approach. Moreover, we discuss the benefits of this Wiki-based solution in the broader context of ProjectIT initiative, and how it can leverage the quality and rigor of requirements specifications through its integration with CASE tools.

Are there so many sons per node in a wireless sensor network data aggregation tree

Abstract: Some authors seem to believe that the average number of sons in a Wireless Sensor Network (WSN) data aggregation tree can be kept constant, even when the distances from the sink increase. But this assumption is impossible to stand in a dense and uniformly deployed network, as the number of nodes in a given level would grow exponentially, while the perimeter just grows linearly. In this letter, it is shown that the average number of sons of a given tree node is in average a quite low number, slightly higher than one, and that it tends to 1, as the distance to sink, or node depth, increases, both for 2-D, and for 3-D WSNs.

An airport decision support system for mobiles surveillance & alerting

Abstract: The improvement of safety on airport surface movements requires an integrated management of the entire airport, which is hard because usually that management is performed independently. This scenario sometimes compromises the overall efficiency of airport operations. The continuous increase of airport traffic has also lead to an escalating number of accidents and incidents on airport surface movements. In case of crisis situations, airport operators involved in the decision-making process have a limited knowledge of the overall traffic situation, thus leading to ground movement hazards. Therefore, the safety of vehicles on the movement area is seen as a major issue. The AIRNET project contributes to the solution of this problem by developing a new low-cost and modular platform for safety management on airport surface movements.The paper presents the AIRNET platform architecture focussing into its innovative characteristics to provide, in an airport environment, the surveillance, control, guidance, and most of all the decision support services for airport operators. The paper also outlines the dataflow within the Ground System and how the data are send/received to/from the on-board systems, which correspond to a simplified version of the corresponding modules on the Ground System.