Records |
Author |
Cesta, Amedeo; Finzi, Alberto; Fratini, Simone; Orlandini, Andrea; Tronci, Enrico |
Title |
Flexible Timeline-Based Plan Verification |
Type |
Conference Article |
Year |
2009 |
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KI 2009: Advances in Artificial Intelligence, 32nd Annual German Conference on AI, Paderborn, Germany, September 15-18, 2009. Proceedings |
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49-56 |
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Springer |
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Mertsching, Bärbel; Hund, M.; Aziz, M.Z. |
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Lecture Notes in Computer Science |
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5803 |
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978-3-642-04616-2 |
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yes |
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Sapienza @ mari @ Cffot09 |
Serial |
21 |
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Author |
Cesta, Amedeo; Finzi, Alberto; Fratini, Simone; Orlandini, Andrea; Tronci, Enrico |
Title |
Flexible Plan Verification: Feasibility Results |
Type |
Conference Article |
Year |
2009 |
Publication |
16th RCRA International Workshop on “Experimental evaluation of algorithms for solving problems with combinatorial explosion” (RCRA). Proceedings |
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yes |
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Sapienza @ mari @ Rcra09 |
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22 |
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Author |
Cesta, Amedeo; Finzi, Alberto; Fratini, Simone; Orlandini, Andrea; Tronci, Enrico |
Title |
Verifying Flexible Timeline-based Plans |
Type |
Conference Article |
Year |
2009 |
Publication |
E-Proc. of ICAPS Workshop on Validation and Verification of Planning and Scheduling Systems |
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Abstract |
The synthesis of flexible temporal plans has demonstrated wide applications possibilities in heterogeneous domains. We are currently studying the connection between plan generation and execution from the particular perspective of verifying a flexible plan before actual execution. This paper explores how a model-checking verification tool, based on UPPAAL-TIGA, is suitable for verifying flexible temporal plans. We first describe the formal model, the formalism, and the verification method. Furthermore we discuss our own approach and some preliminary empirical results using a real-world case study. |
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yes |
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Sapienza @ mari @ Vvps09 |
Serial |
23 |
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Author |
Cesta, Amedeo; Fratini, Simone; Orlandini, Andrea; Finzi, Alberto; Tronci, Enrico |
Title |
Flexible Plan Verification: Feasibility Results |
Type |
Journal Article |
Year |
2011 |
Publication |
Fundamenta Informaticae |
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Volume |
107 |
Issue |
2 |
Pages |
111-137 |
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yes |
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Sapienza @ mari @ fi11 |
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15 |
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Author |
Chen, Q.M.; Finzi, A.; Mancini, T.; Melatti, I.; Tronci, E. |
Title |
MILP, Pseudo-Boolean, and OMT Solvers for Optimal Fault-Tolerant Placements of Relay Nodes in Mission Critical Wireless Networks |
Type |
Journal Article |
Year |
2020 |
Publication |
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Abbreviated Journal |
Fundamenta Informaticae |
Volume |
174 |
Issue |
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Pages |
229-258 |
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Abstract |
In critical infrastructures like airports, much care has to be devoted in protecting radio communication networks from external electromagnetic interference. Protection of such mission-critical radio communication networks is usually tackled by exploiting radiogoniometers: at least three suitably deployed radiogoniometers, and a gateway gathering information from them, permit to monitor and localise sources of electromagnetic emissions that are not supposed to be present in the monitored area. Typically, radiogoniometers are connected to the gateway through relay nodes . As a result, some degree of fault-tolerance for the network of relay nodes is essential in order to offer a reliable monitoring. On the other hand, deployment of relay nodes is typically quite expensive. As a result, we have two conflicting requirements: minimise costs while guaranteeing a given fault-tolerance. In this paper, we address the problem of computing a deployment for relay nodes that minimises the overall cost while at the same time guaranteeing proper working of the network even when some of the relay nodes (up to a given maximum number) become faulty (fault-tolerance ). We show that, by means of a computation-intensive pre-processing on a HPC infrastructure, the above optimisation problem can be encoded as a 0/1 Linear Program, becoming suitable to be approached with standard Artificial Intelligence reasoners like MILP, PB-SAT, and SMT/OMT solvers. Our problem formulation enables us to present experimental results comparing the performance of these three solving technologies on a real case study of a relay node network deployment in areas of the Leonardo da Vinci Airport in Rome, Italy. |
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IOS Press |
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1875-8681 |
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no |
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MCLab @ davi @ |
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188 |
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Author |
Chierichetti, Flavio; Lattanzi, Silvio; Mari, Federico; Panconesi, Alessandro |
Title |
On Placing Skips Optimally in Expectation |
Type |
Conference Article |
Year |
2008 |
Publication |
Web Search and Web Data Mining (WSDM 2008) |
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Pages |
15-24 |
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Information Retrieval |
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We study the problem of optimal skip placement in an inverted list. Assuming the query distribution to be known in advance, we formally prove that an optimal skip placement can be computed quite efficiently. Our best algorithm runs in time O(n log n), n being the length of the list. The placement is optimal in the sense that it minimizes the expected time to process a query. Our theoretical results are matched by experiments with a real corpus, showing that substantial savings can be obtained with respect to the tra- ditional skip placement strategy, that of placing consecutive skips, each spanning sqrt(n) many locations. |
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Acm |
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Najork, M.; Broder, A.Z.; Chakrabarti, S. |
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yes |
Call Number |
Sapienza @ mari @ ChiLatMar08 |
Serial |
94 |
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Author |
Ciancamerla, Ester; Minichino, Michele; Serro, Stefano; Tronci, Enrico |
Title |
Automatic Timeliness Verification of a Public Mobile Network |
Type |
Conference Article |
Year |
2003 |
Publication |
22nd International Conference on Computer Safety, Reliability, and Security (SAFECOMP) |
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Pages |
35-48 |
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Abstract |
This paper deals with the automatic verification of the timeliness of Public Mobile Network (PMN), consisting of Mobile Nodes (MNs) and Base Stations (BSs). We use the Mur$\varphi$ Model Checker to verify that the waiting access time of each MN, under different PMN configurations and loads, and different inter arrival times of MNs in a BS cell, is always below a preassigned threshold. Our experimental results show that Model Checking can be successfully used to generate worst case scenarios and nicely complements probabilistic methods and simulation which are typically used for performance evaluation. |
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Springer |
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Edinburgh, UK |
Editor |
Anderson, S.; Felici, M.; Littlewood, B. |
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Lecture Notes in Computer Science |
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Series Volume |
2788 |
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ISSN |
978-3-540-20126-7 |
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yes |
Call Number |
Sapienza @ mari @ safecomp03 |
Serial |
38 |
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Author |
Coppo, Mario; Dezani-Ciancaglini, Mariangiola; Giovannetti, Elio; Salvo, Ivano |
Title |
Mobility Types for Mobile Processes in Mobile Ambients |
Type |
Journal Article |
Year |
2003 |
Publication |
Electr. Notes Theor. Comput. Sci. |
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Volume |
78 |
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Abstract |
We present an ambient-like calculus in which the open capability is dropped, and a new form of “lightweightÃ¢â‚¬Âť process mobility is introduced. The calculus comes equipped with a type system that allows the kind of values exchanged in communications and the access and mobility properties of processes to be controlled. A type inference procedure determines the “minimalÃ¢â‚¬Âť requirements to accept a system or a component as well typed. This gives a kind of principal typing. As an expressiveness test, we show that some well known calculi of concurrency and mobility can be encoded in our calculus in a natural way. |
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yes |
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Sapienza @ mari @ Coppo-Dezani-Giovannetti-Salvo:03 |
Serial |
74 |
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Author |
Della Penna, Giuseppe; Di Marco, Antinisca; Intrigila, Benedetto; Melatti, Igor; Pierantonio, Alfonso |
Title |
Interoperability mapping from XML schemas to ER diagrams |
Type |
Journal Article |
Year |
2006 |
Publication |
Data Knowl. Eng. |
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Volume |
59 |
Issue |
1 |
Pages |
166-188 |
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Abstract |
The eXtensible Markup Language (XML) is a de facto standard on the Internet and is now being used to exchange a variety of data structures. This leads to the problem of efficiently storing, querying and retrieving a great amount of data contained in XML documents. Unfortunately, XML data often need to coexist with historical data. At present, the best solution for storing XML into pre-existing data structures is to extract the information from the XML documents and adapt it to the data structures’ logical model (e.g., the relational model of a DBMS). In this paper, we introduce a technique called Xere (XML entity–relationship exchange) to assist the integration of XML data with other data sources. To this aim, we present an algorithm that maps XML schemas into entity–relationship diagrams, discuss its soundness and completeness and show its implementation in XSLT. |
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Elsevier Science Publishers B. V. |
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Amsterdam, The Netherlands, The Netherlands |
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0169-023x |
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yes |
Call Number |
Sapienza @ mari @ Ddimp06 |
Serial |
77 |
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Author |
Della Penna, Giuseppe; Di Marco, Antinisca; Intrigila, Benedetto; Melatti, Igor; Pierantonio, Alfonso |
Title |
Xere: Towards a Natural Interoperability between XML and ER Diagrams |
Type |
Conference Article |
Year |
2003 |
Publication |
Fundamental Approaches to Software Engineering, 6th International Conference, FASE 2003, Held as Part of the Joint European Conferences on Theory and Practice of Software, ETAPS 2003, Warsaw, Poland, April 7-11, 2003, Proceedings |
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Volume |
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Pages |
356-371 |
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XML (eXtensible Markup Language) is becoming the standard format for documents on Internet and is widely used to exchange data. Often, the relevant information contained in XML documents needs to be also stored in legacy databases (DB) in order to integrate the new data with the pre-existing ones. In this paper, we introduce a technique for the automatic XML-DB integration, which we call Xere. In particular we present, as the first step of Xere, the mapping algorithm which allows the translation of XML Schemas into Entity-Relationship diagrams. |
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Springer |
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Editor |
Pezzè, M. |
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Lecture Notes in Computer Science |
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Series Volume |
2621 |
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3-540-00899-3 |
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yes |
Call Number |
Sapienza @ mari @ Ddimp03 |
Serial |
86 |
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