| Records |
| Author |
Intrigila, Benedetto; Salvo, Ivano; Sorgi, Stefano |
| Title |
A characterization of weakly Church-Rosser abstract reduction systems that are not Church-Rosser |
Type |
Journal Article |
Year  |
2001 |
Publication |
Information and Computation |
Abbreviated Journal |
|
| Volume |
171 |
Issue |
2 |
Pages |
137-155 |
| Keywords |
|
| Abstract |
Basic properties of rewriting systems can be stated in the framework of abstract reduction systems (ARS). Properties like confluence (or Church-Rosser, CR) and weak confluence (or weak Church-Rosser, WCR) and their relationships can be studied in this setting: as a matter of fact, well-known counterexamples to the implication WCR CR have been formulated as ARS. In this paper, starting from the observation that such counterexamples are structurally similar, we set out a graph-theoretic characterization of WCR ARS that is not CR in terms of a suitable class of reduction graphs, such that in every WCR not CR ARS, we can embed at least one element of this class. Moreover, we give a tighter characterization for a restricted class of ARS enjoying a suitable regularity condition. Finally, as a consequence of our approach, we prove some interesting results about ARS using the mathematical tools developed. In particular, we prove an extension of the Newman’s lemma and we find out conditions that, once assumed together with WCR property, ensure the unique normal form property. The Appendix treats two interesting examples, both generated by graph-rewriting rules, with specific combinatorial properties. |
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
Academic Press, Inc. |
Place of Publication |
Duluth, MN, USA |
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
0890-5401 |
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
yes |
| Call Number |
Sapienza @ mari @ Intrigila-Salvo-Sorgi:01 |
Serial |
68 |
| Permanent link to this record |
| |
|
| |
| 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 |
| Keywords |
|
| 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. |
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
Elsevier |
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
|
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| 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 |
| Permanent link to this record |
| |
|
| |
| Author |
Cecconi, Michele; Tronci, Enrico |
| Title |
Requirements Formalization and Validation for a Telecommunication Equipment Protection Switcher |
Type |
Conference Article |
| Year |
2000 |
Publication |
Hase |
Abbreviated Journal |
|
| Volume |
|
Issue |
|
Pages |
|
| Keywords |
|
| Abstract |
|
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
IEEE Computer Society |
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
0-7695-0927-4 |
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
yes |
| Call Number |
Sapienza @ mari @ CeTro00 |
Serial |
29 |
| Permanent link to this record |
| |
|
| |
| Author |
Tronci, Enrico |
| Title |
Automatic Synthesis of Control Software for an Industrial Automation Control System |
Type |
Conference Article |
| Year |
1999 |
Publication |
Proc.of: 14th IEEE International Conference on: Automated Software Engineering (ASE) |
Abbreviated Journal |
|
| Volume |
|
Issue |
|
Pages |
247-250 |
| Keywords |
|
| Abstract |
We present a case study on automatic synthesis of control software from formal specifications for an industrial automation control system. Our aim is to compare the effectiveness (i.e. design effort and controller quality) of automatic controller synthesis from closed loop formal specifications with that of manual controller design, followed by automatic verification. Our experimental results show that for industrial automation control systems, automatic synthesis is a viable and profitable (especially as far as design effort is concerned) alternative to manual design, followed by automatic verification. |
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
Cocoa Beach, Florida, USA |
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
|
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
yes |
| Call Number |
Sapienza @ mari @ ase99 |
Serial |
49 |
| Permanent link to this record |
| |
|
| |
| Author |
Tronci, Enrico |
| Title |
Formally Modeling a Metal Processing Plant and its Closed Loop Specifications |
Type |
Conference Article |
| Year |
1999 |
Publication |
4th IEEE International Symposium on High-Assurance Systems Engineering (HASE) |
Abbreviated Journal |
|
| Volume |
|
Issue |
|
Pages |
151 |
| Keywords |
|
| Abstract |
We present a case study on automatic synthesis of control software from formal specifications for an industrial automation control system. Our aim is to compare the effectiveness (i.e. design effort and controller quality) of automatic controller synthesis from closed loop formal specifications with that of manual controller design followed by automatic verification. The system to be controlled (plant) models a metal processing facility near Karlsruhe. We succeeded in automatically generating C code implementing a (correct by construction) embedded controller for such a plant from closed loop formal specifications. Our experimental results show that for industrial automation control systems automatic synthesis is a viable and profitable (especially as far as design effort is concerned) alternative to manual design followed by automatic verification. |
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
IEEE Computer Society |
Place of Publication |
Washington, D.C, USA |
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
0-7695-0418-3 |
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
yes |
| Call Number |
Sapienza @ mari @ hase99 |
Serial |
50 |
| Permanent link to this record |
| |
|
| |
| 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 |
|
Abbreviated Journal |
|
| Volume |
|
Issue |
|
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. |
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
IEEE Computer Society |
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
|
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
yes |
| Call Number |
Sapienza @ mari @ bucciarelli-delorenzis-piperno-salvo:99 |
Serial |
71 |
| Permanent link to this record |
| |
|
| |
| Author |
Fantechi, Alessandro; Gnesi, Stefania; Mazzanti, Franco; Pugliese, Rosario; Tronci, Enrico |
| Title |
A Symbolic Model Checker for ACTL |
Type |
Conference Article |
| Year |
1998 |
Publication |
International Workshop on Current Trends in Applied Formal Method (FM-Trends) |
Abbreviated Journal |
|
| Volume |
|
Issue |
|
Pages |
228-242 |
| Keywords |
|
| Abstract |
We present SAM, a symbolic model checker for ACTL, the action-based version of CTL. SAM relies on implicit representations of Labeled Transition Systems (LTSs), the semantic domain for ACTL formulae, and uses symbolic manipulation algorithms. SAM has been realized by translating (networks of) LTSs and, possibly recursive, ACTL formulae into BSP (Boolean Symbolic Programming), a programming language aiming at defining computations on boolean functions, and by using the BSP interpreter to carry out computations (i.e. verifications). |
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
Springer |
Place of Publication |
Boppard, Germany |
Editor |
Hutter, D.; Stephan, W.; Traverso, P.; Ullmann, M. |
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
Lecture Notes in Computer Science |
Abbreviated Series Title |
|
| Series Volume |
1641 |
Series Issue |
|
Edition |
|
| ISSN |
3-540-66462-9 |
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
yes |
| Call Number |
Sapienza @ mari @ fm-trends98 |
Serial |
51 |
| Permanent link to this record |
| |
|
| |
| Author |
Tronci, Enrico |
| Title |
Automatic Synthesis of Controllers from Formal Specifications |
Type |
Conference Article |
| Year |
1998 |
Publication |
Proc of 2nd IEEE International Conference on Formal Engineering Methods (ICFEM) |
Abbreviated Journal |
|
| Volume |
|
Issue |
|
Pages |
134-143 |
| Keywords |
|
| Abstract |
Many safety critical reactive systems are indeed embedded control systems. Usually a control system can be partitioned into two main subsystems: a controller and a plant. Roughly speaking: the controller observes the state of the plant and sends commands (stimulus) to the plant to achieve predefined goals. We show that when the plant can be modeled as a deterministic finite state system (FSS) it is possible to effectively use formal methods to automatically synthesize the program implementing the controller from the plant model and the given formal specifications for the closed loop system (plant+controller). This guarantees that the controller program is correct by construction. To the best of our knowledge there is no previously published effective algorithm to extract executable code for the controller from closed loop formal specifications. We show practical usefulness of our techniques by giving experimental results on their use to synthesize C programs implementing optimal controllers (OCs) for plants with more than 109 states. |
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
Brisbane, Queensland, Australia |
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
|
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
yes |
| Call Number |
Sapienza @ mari @ icfem98 |
Serial |
52 |
| Permanent link to this record |
| |
|
| |
| Author |
Bucciarelli, Antonio; Salvo, Ivano |
| Title |
Totality, Definability and Boolean Circuits |
Type |
Journal Article |
| Year |
1998 |
Publication |
|
Abbreviated Journal |
|
| Volume |
1443 |
Issue |
|
Pages |
808-819 |
| Keywords |
|
| Abstract |
In the type frame originating from the flat domain of boolean values, we single out elements which are hereditarily total. We show that these elements can be defined, up to total equivalence, by sequential programs. The elements of an equivalence class of the totality equivalence relation (totality class) can be seen as different algorithms for computing a given set-theoretic boolean function. We show that the bottom element of a totality class, which is sequential, corresponds to the most eager algorithm, and the top to the laziest one. Finally we suggest a link between size of totality classes and a well known measure of complexity of boolean functions, namely their sensitivity. |
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
Springer |
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
|
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
yes |
| Call Number |
Sapienza @ mari @ bucciarelli-salvo:98 |
Serial |
70 |
| Permanent link to this record |
| |
|
| |
| 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 |
Abbreviated Journal |
|
| Volume |
|
Issue |
|
Pages |
|
| Keywords |
|
| Abstract |
|
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
IEEE Computer Society |
Place of Publication |
Washington, DC, USA |
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
|
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
yes |
| Call Number |
Sapienza @ mari @ cdc97 |
Serial |
66 |
| Permanent link to this record |
