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| Author | Alimguzhin, V.; Mari, F.; Melatti, I.; Salvo, I.; Tronci, E. | ||||
| Title | Linearising Discrete Time Hybrid Systems | Type | Journal Article | ||
| Year | 2017 | Publication | IEEE Transactions on Automatic Control | Abbreviated Journal | |
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62 | Issue | 10 | Pages | 5357-5364 |
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| Abstract | Model Based Design approaches for embedded systems aim at generating correct-by-construction control software, guaranteeing that the closed loop system (controller and plant) meets given system level formal specifications. This technical note addresses control synthesis for safety and reachability properties of possibly non-linear discrete time hybrid systems. By means of syntactical transformations that require non-linear terms to be Lipschitz continuous functions, we over-approximate non-linear dynamics with a linear system whose controllers are guaranteed to be controllers of the original system. We evaluate performance of our approach on meaningful control synthesis benchmarks, also comparing it to a state-of-the-art tool. | ||||
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| ISSN | 0018-9286 | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | Sapienza @ mari @ ref7902199 | Serial | 164 | ||
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| Author | Barbanera, Franco; Dezani-Ciancaglini, Mariangiola; Salvo, Ivano; Sassone, Vladimiro | ||||
| Title | A Type Inference Algorithm for Secure Ambients | Type | Journal Article | ||
| Year | 2002 | Publication | Electronic Notes in Theoretical Computer Science | Abbreviated Journal | |
| Volume |
62 | Issue | Pages | 83-101 | |
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| Abstract | We consider a type discipline for the Ambient Calculus that associates ambients with security levels and constrains them to be traversed by or opened in ambients of higher security clearance only. We present a bottom-up algorithm that, given an untyped process P, computes a minimal set of constraints on security levels such that all actions during runs of P are performed without violating the security level priorities. Such an algorithm appears to be a prerequisite to use type systems to ensure security properties in the web scenario. | ||||
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| Publisher | Elsevier | Place of Publication | Editor | ||
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| Notes | TOSCA 2001, Theory of Concurrency, Higher Order Languages and Types | Approved | yes | ||
| Call Number | Sapienza @ mari @ Barbanera-Dezani-Salvo-Sassone:01 | Serial | 73 | ||
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| Author | Bono, V.; Salvo, I. | ||||
| Title | A CuCh Interpretation of an Object-Oriented Language | Type | Journal Article | ||
| Year | 2001 | Publication | Electronic Notes in Theoretical Computer Science | Abbreviated Journal | |
| Volume |
50 | Issue | 2 | Pages | 159-177 |
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| Abstract | CuCh machine extends pure lambda–calculus with algebraic data types and provides a the possibility of defining functions over the disjoint sum of algebras. We exploit such natural form of overloading to define a functional interpretation of a simple, but significant fragment of a typical object-oriented language. | ||||
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| Publisher | Elsevier | Place of Publication | Editor | ||
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| Notes | BOTH 2001, Bohm’s theorem: applications to Computer Science Theory (Satellite Workshop of ICALP 2001) | Approved | yes | ||
| Call Number | Sapienza @ mari @ Bono-Salvo:BOTH01 | Serial | 72 | ||
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| Author | Mari, Federico; Melatti, Igor; Salvo, Ivano; Tronci, Enrico | ||||
| Title | Model Based Synthesis of Control Software from System Level Formal Specifications | Type | Journal Article | ||
| Year | 2014 | Publication | ACM TRANSACTIONS ON SOFTWARE ENGINEERING AND METHODOLOGY | Abbreviated Journal | ACM TRANSACTIONS ON SOFTWARE ENGINEERING AND METHODOLOGY |
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23 | Issue | 1 | Pages | Article 6 |
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| Publisher | ACM | Place of Publication | Editor | ||
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| ISSN | 1049-331X | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | Sapienza @ melatti @ | Serial | 110 | ||
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| Author | Bucciarelli, Antonio; Piperno, Adolfo; Salvo, Ivano | ||||
| Title | Intersection types and λ-definability | Type | Journal Article | ||
| Year | 2003 | Publication | Mathematical Structures in Computer Science | Abbreviated Journal | |
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13 | Issue | 1 | Pages | 15-53 |
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| Abstract | This paper presents a novel method for comparing computational properties of λ-terms that are typeable with intersection types, with respect to terms that are typeable with Curry types. We introduce a translation from intersection typing derivations to Curry typeable terms that is preserved by β-reduction: this allows the simulation of a computation starting from a term typeable in the intersection discipline by means of a computation starting from a simply typeable term. Our approach proves strong normalisation for the intersection system naturally by means of purely syntactical techniques. The paper extends the results presented in Bucciarelli et al. (1999) to the whole intersection type system of Barendregt, Coppo and Dezani, thus providing a complete proof of the conjecture, proposed in Leivant (1990), that all functions uniformly definable using intersection types are already definable using Curry types. | ||||
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| Publisher | Cambridge University Press | Place of Publication | New York, NY, USA | Editor | |
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0960-1295 | ISBN | Medium | ||
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| Notes | Approved | yes | |||
| Call Number | Sapienza @ mari @ Bucciarelli-Piperno-Salvo:MSCS-03 | Serial | 69 | ||
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| Author | Mari, Federico; Melatti, Igor; Salvo, Ivano; Tronci, Enrico | ||||
| Title | Linear Constraints and Guarded Predicates as a Modeling Language for Discrete Time Hybrid Systems | Type | Journal Article | ||
| Year | 2013 | Publication | International Journal on Advances in Software | Abbreviated Journal | Intern. Journal on Advances in SW |
| Volume |
vol. 6, nr 1&2 | Issue | Pages | 155-169 | |
| Keywords | Model-based software design; Linear predicates; Hybrid systems | ||||
| Abstract | Model based design is particularly appealing in
software based control systems (e.g., embedded software) design, since in such a case system level specifications are much easier to define than the control software behavior itself. In turn, model based design of embedded systems requires modeling both continuous subsystems (typically, the plant) as well as discrete subsystems (the controller). This is typically done using hybrid systems. Mixed Integer Linear Programming (MILP) based abstraction techniques have been successfully applied to automatically synthesize correct-by-construction control software for discrete time linear hybrid systems, where plant dynamics is modeled as a linear predicate over state, input, and next state variables. Unfortunately, MILP solvers require such linear predicates to be conjunctions of linear constraints, which is not a natural way of modeling hybrid systems. In this paper we show that, under the hypothesis that each variable ranges over a bounded interval, any linear predicate built upon conjunction and disjunction of linear constraints can be automatically translated into an equivalent conjunctive predicate. Since variable bounds play a key role in this translation, our algorithm includes a procedure to compute all implicit variable bounds of the given linear predicate. Furthermore, we show that a particular form of linear predicates, namely guarded predicates, are a natural and powerful language to succinctly model discrete time linear hybrid systems dynamics. Finally, we experimentally show the feasibility of our approach on an important and challenging case study taken from the literature, namely the multi-input Buck DC-DC Converter. As an example, the guarded predicate that models (with 57 constraints) a 6-inputs Buck DC-DC Converter is translated in a conjunctive predicate (with 102 linear constraints) in about 40 minutes. |
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| Publisher | IARIA | Place of Publication | Editor | Luigi Lavazza | |
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| Series Volume | Series Issue | Edition | |||
| ISSN | 1942-2628 | ISBN | Medium | ||
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| Notes | Approved | yes | |||
| Call Number | Sapienza @ melatti @ | Serial | 115 | ||
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| Author | Mari, Federico; Melatti, Igor; Salvo, Ivano; Tronci, Enrico | ||||
| Title | Synthesizing Control Software from Boolean Relations | Type | Journal Article | ||
| Year | 2012 | Publication | International Journal on Advances in Software | Abbreviated Journal | Intern. Journal on Advances in SW |
| Volume |
vol. 5, nr 3&4 | Issue | Pages | 212-223 | |
| Keywords | Control Software Synthesis; Embedded Systems; Model Checking | ||||
| Abstract | Many software as well digital hardware automatic
synthesis methods define the set of implementations meeting the given system specifications with a boolean relation K. In such a context a fundamental step in the software (hardware) synthesis process is finding effective solutions to the functional equation defined by K. This entails finding a (set of) boolean function(s) F (typically represented using OBDDs, Ordered Binary Decision Diagrams) such that: 1) for all x for which K is satisfiable, K(x, F(x)) = 1 holds; 2) the implementation of F is efficient with respect to given implementation parameters such as code size or execution time. While this problem has been widely studied in digital hardware synthesis, little has been done in a software synthesis context. Unfortunately, the approaches developed for hardware synthesis cannot be directly used in a software context. This motivates investigation of effective methods to solve the above problem when F has to be implemented with software. In this paper, we present an algorithm that, from an OBDD representation for K, generates a C code implementation for F that has the same size as the OBDD for F and a worst case execution time linear in nr, being n = |x| the number of input arguments for functions in F and r the number of functions in F. Moreover, a formal proof of the proposed algorithm correctness is also shown. Finally, we present experimental results showing effectiveness of the proposed algorithm. |
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| Publisher | IARIA | Place of Publication | Editor | Luigi Lavazza | |
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| ISSN | 1942-2628 | ISBN | Medium | ||
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| Notes | Approved | yes | |||
| Call Number | Sapienza @ melatti @ | Serial | 108 | ||
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| Author | Mancini, T.; Mari, F.; Melatti, I.; Salvo, I.; Tronci, E. | ||||
| Title | An Efficient Algorithm for Network Vulnerability Analysis Under Malicious Attacks | Type | Conference Article | ||
| Year | 2018 | Publication | Foundations of Intelligent Systems – 24th International Symposium, ISMIS 2018, Limassol, Cyprus, October 29-31, 2018, Proceedings | Abbreviated Journal | |
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Issue | Pages | 302-312 | ||
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| Notes | Best Paper | Approved | no | ||
| Call Number | MCLab @ davi @ DBLP:conf/ismis/ManciniMMST18 | Serial | 176 | ||
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| Author | Verzino Giovanni ; Cavaliere, Federico; Mari, Federico; Melatti, Igor; Minei, Giovanni; Salvo, Ivano; Yushtein, Yuri; Tronci, Enrico | ||||
| Title | Model checking driven simulation of sat procedures | Type | Conference Article | ||
| Year | 2012 | Publication | Proceedings of 12th International Conference on Space Operations (SpaceOps 2012) | Abbreviated Journal | International Conference on Space Operations |
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| Notes | Approved | no | |||
| Call Number | Sapienza @ melatti @ | Serial | 117 | ||
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| Author | Tronci, E.; Mancini, T.; Salvo, I.; Mari, F.; Melatti, I.; Massini, A.; Sinisi, S.; Davì, F.; Dierkes, T.; Ehrig, R.; Röblitz, S.; Leeners, B.; Krüger, T.; Egli, M.; Ille, F. | ||||
| Title | Patient-Specific Models from Inter-Patient Biological Models and Clinical Records | Type | Conference Article | ||
| Year | 2014 | Publication | Formal Methods in Computer-Aided Design (FMCAD) | Abbreviated Journal | |
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| Notes | Approved | no | |||
| Call Number | Sapienza @ mari @ | Serial | 120 | ||
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