Giampaolo Mazzini

Learn More
In this paper we propose a novel data dissemination protocol for multisink wireless sensor networks based on a geographic random forwarding routing approach. The proposed protocol exploits the intrinsic broadcast nature of the wireless channel in order to allow a reliable and efficient data delivery to a set of data sink in networks with an aggressive(More)
In recent years there has been a growing interest in the commercial deployment of NLP technologies. This paper presents SiSSA, a project whose main aim is that of developing an infrastructure for prototyping, editing and validation of NLP application architectures. The system will provide the user with a graphical environment for (1) selecting the NLP(More)
In this paper we present an application of information extraction technologies to data mining. The system has the goal of producing reliable reports on opinions that customers express about companies and/or products. Information extraction is regarded as an enabling technology by which structured databases can be populated from unstructured texts available(More)
In recent years, automated audio recognition is arising as a relevant issue. One of the most successful approaches has proved to be the Philips method [1], by Haitsma et al.. Our work exploits this framework in order to allow for a better tuning of the algorithm. In particular, we show that more accurate hashes do not always lead to a better performance,(More)
We propose a new decentralized signaling protocol based on multicast and anycast communications, that substitutes the centralized tracker required by classic BitTorrent implementation. The proposed solution allows to fully exploit the decentralized data sharing among BitTorrent peers, by maintaining all its benefits, without the need of the centralized(More)
Energy consumption minimization onWSN (wireless sensors network) is an open challenge. WSN is typically composed by an elevated number of battery powered devices that cooperate to forward data to a rendezvous point. In order to maximize network lifetime many protocols implement sleeps policy and try to reduce devices idle times. Unfortunately a trade off(More)
In this paper, a distributed power control mechanism for ad hoc networks is proposed and investigated. This mechanism, acting at different layers, reduces the power consumption maintaining similar behavior, in terms of delay and throughput, as classic schemes. In the proposed strategy, the generic sender uses an appropriate power level to transmit its(More)
In this paper we investigate the behaviour of M-GeRaf, Multisink GeRaf, a data dissemination protocol for multisink wireless sensor network environments based on a geographic random forwarding routing approach. The protocol exploits the intrinsic broadcast nature of the wireless channel in order to allow a reliable and efficient data delivery to a set of(More)
The DepAuDE project wants to develop a design framework to evaluate which techniques, tools and methodologies are best suited to obtain dependability for embedded applications that are distributed on multiple levels. In a second step, it will develop and evaluate elements (both intra-site and inter-site) of an architecture to make these applications more(More)
We will present a new model of grammar documentation which exploits the potentialities of an hypertextual representation of lingware. As we will show this model insures the following benefits: • Constant coherence between the documentation and the various pieces of linguistic information. • Valuable organization of the linguistic knowledge, in order to(More)