Records |
Author |
Tronci, Enrico |
Title |
Equational Programming in lambda-calculus |
Type |
Conference Article |
Year |
1991 |
Publication |
Sixth Annual IEEE Symposium on Logic in Computer Science (LICS) |
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Pages |
191-202 |
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IEEE Computer Society |
Place of Publication |
Amsterdam, The Netherlands |
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Approved |
yes |
Call Number |
Sapienza @ mari @ lics91 |
Serial |
58 |
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Author |
Piperno, Adolfo; Tronci, Enrico |
Title |
Regular Systems of Equations in λ-calculus |
Type |
Conference Article |
Year |
1989 |
Publication |
Ictcs |
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Abstract |
Many problems arising in equational theories like Lambda-calculus and Combinatory Logic can be expressed by combinatory equations or systems of equations. However, the solvability problem for an arbitrarily given class of systems is in general undecidable. In this paper we shall focus our attention on a decidable class of systems, which will be called regular systems, and we shall analyse some classical problems and well-known properties of Lambda-calculus that can be described and solved by means of regular systems. The significance of such class will be emphasized showing that for slight extensions of it the solvability problem turns out to be undecidable. |
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Place of Publication |
Mantova - Italy |
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yes |
Call Number |
Sapienza @ mari @ ictcs89 |
Serial |
61 |
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Author |
Böhm, Corrado; Piperno, Adolfo; Tronci, Enrico |
Title |
Solving Equations in λ-calculus |
Type |
Conference Article |
Year |
1989 |
Publication |
Proc. of: Logic Colloquium 88 |
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Place of Publication |
Padova - Italy |
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yes |
Call Number |
Sapienza @ mari @ logic-colloquium-88 |
Serial |
62 |
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Author |
Böhm, Corrado; Tronci, Enrico |
Title |
X-Separability and Left-Invertibility in lambda-calculus |
Type |
Conference Article |
Year |
1987 |
Publication |
Symposium on Logic in Computer Science (LICS) |
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Volume |
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Issue |
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Pages |
320-328 |
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IEEE Computer Society |
Place of Publication |
Ithaca, New York, USA |
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yes |
Call Number |
Sapienza @ mari @ lics87 |
Serial |
63 |
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Author |
Böhm, Corrado; Tronci, Enrico |
Title |
X-separability and left-invertibility in the λ-calculus (extended abstract, invited paper) |
Type |
Conference Article |
Year |
1987 |
Publication |
Proceedings of: Temi e prospettive della Logica e della Filosofia della Scienza contemporanea |
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Place of Publication |
Cesena - Italy |
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yes |
Call Number |
Sapienza @ mari @ cesena87 |
Serial |
64 |
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Author |
Bobbio, Andrea; Bologna, Sandro; Minichino, Michele; Ciancamerla, Ester; Incalcaterra, Piero; Kropp, Corrado; Tronci, Enrico |
Title |
Advanced techniques for safety analysis applied to the gas turbine control system of Icaro co generative plant |
Type |
Conference Article |
Year |
2001 |
Publication |
X Convegno Tecnologie e Sistemi Energetici Complessi |
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Pages |
339-350 |
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The paper describes two complementary and integrable approaches, a probabilistic one and a deterministic one, based on classic and advanced modelling techniques for safety analysis of complex computer based systems. The probabilistic approach is based on classical and innovative probabilistic analysis methods. The deterministic approach is based on formal verification methods. Such approaches are applied to the gas turbine control system of ICARO co generative plant, in operation at ENEA CR Casaccia. The main difference between the two approaches, behind the underlining different theories, is that the probabilistic one addresses the control system by itself, as the set of sensors, processing units and actuators, while the deterministic one also includes the behaviour of the equipment under control which interacts with the control system. The final aim of the research, documented in this paper, is to explore an innovative method which put the probabilistic and deterministic approaches in a strong relation to overcome the drawbacks of their isolated, selective and fragmented use which can lead to inconsistencies in the evaluation results. |
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Genova, Italy |
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yes |
Call Number |
Sapienza @ mari @ tesec01 |
Serial |
65 |
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Author |
Tronci, Enrico |
Title |
On Computing Optimal Controllers for Finite State Systems |
Type |
Conference Article |
Year |
1997 |
Publication |
CDC '97: Proceedings of the 36th IEEE International Conference on Decision and Control |
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IEEE Computer Society |
Place of Publication |
Washington, DC, USA |
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yes |
Call Number |
Sapienza @ mari @ cdc97 |
Serial |
66 |
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Author |
Tronci, Enrico |
Title |
Optimal Finite State Supervisory Control |
Type |
Conference Article |
Year |
1996 |
Publication |
CDC '96: Proceedings of the 35th IEEE International Conference on Decision and Control |
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Abstract |
Supervisory Controllers are Discrete Event Dynamic Systems (DEDSs) forming the discrete core of a Hybrid Control System. We address the problem of automatic synthesis of Optimal Finite State Supervisory Controllers (OSCs). We show that Boolean First Order Logic (BFOL) and Binary Decision Diagrams (BDDs) are an effective methodological and practical framework for Optimal Finite State Supervisory Control. Using BFOL programs (i.e. systems of boolean functional equations) and BDDs we give a symbolic (i.e. BDD based) algorithm for automatic synthesis of OSCs. Our OSC synthesis algorithm can handle arbitrary sets of final states as well as plant transition relations containing loops and uncontrollable events (e.g. failures). We report on experimental results on the use of our OSC synthesis algorithm to synthesize a C program implementing a minimum fuel OSC for two autonomous vehicles moving on a 4 x 4 grid. |
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IEEE Computer Society |
Place of Publication |
Washington, DC, USA |
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yes |
Call Number |
Sapienza @ mari @ cdc96 |
Serial |
67 |
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Author |
Bucciarelli, Antonio; de Lorenzis, Silvia; Piperno, Adolfo; Salvo, Ivano |
Title |
Some Computational Properties of Intersection Types (Extended Abstract) |
Type |
Journal Article |
Year |
1999 |
Publication |
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Volume |
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Issue |
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Pages |
109-118 |
Keywords |
lambda calculusCurry types, intersection types, lambda-definability, lambda-terms, strong normalization |
Abstract |
This paper presents a new method for comparing computation-properties of λ-terms typeable with intersection types with respect to terms typeable with Curry types. In particular, strong normalization and λ-definability are investigated. A translation is introduced from intersection typing derivations to Curry typeable terms; the main feature of the proposed technique is that the translation is preserved by β-reduction. This allows to simulate a computation starting from a term typeable in the intersection discipline by means of a computation starting from a simply typeable term. Our approach naturally leads to prove strong normalization in the intersection system by means of purely syntactical techniques. In addition, the presented method enables us to give a proof of a conjecture proposed by Leivant in 1990, namely that all functions uniformly definable using intersection types are already definable using Curry types. |
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IEEE Computer Society |
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yes |
Call Number |
Sapienza @ mari @ bucciarelli-delorenzis-piperno-salvo:99 |
Serial |
71 |
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Author |
Intrigila, Benedetto; Magazzeni, Daniele; Melatti, Igor; Tronci, Enrico |
Title |
A Model Checking Technique for the Verification of Fuzzy Control Systems |
Type |
Conference Article |
Year |
2005 |
Publication |
CIMCA '05: Proceedings of the International Conference on Computational Intelligence for Modelling, Control and Automation and International Conference on Intelligent Agents, Web Technologies and Internet Commerce Vol-1 (CIMCA-IAWTIC'06) |
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Pages |
536-542 |
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Abstract |
Fuzzy control is well known as a powerful technique for designing and realizing control systems. However, statistical evidence for their correct behavior may be not enough, even when it is based on a large number of samplings. In order to provide a more systematic verification process, the cell-to-cell mapping technology has been used in a number of cases as a verification tool for fuzzy control systems and, more recently, to assess their optimality and robustness. However, cell-to-cell mapping is typically limited in the number of cells it can explore. To overcome this limitation, in this paper we show how model checking techniques may be instead used to verify the correct behavior of a fuzzy control system. To this end, we use a modified version of theMurphi verifier, which ease the modeling phase by allowing to use finite precision real numbers and external C functions. In this way, also already designed simulators may be used for the verification phase. With respect to the cell mapping technique, our approach appears to be complementary; indeed, it explores a much larger number of states, at the cost of being less informative on the global dynamic of the system. |
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IEEE Computer Society |
Place of Publication |
Washington, DC, USA |
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0-7695-2504-0-01 |
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yes |
Call Number |
Sapienza @ mari @ Immt05 |
Serial |
75 |
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