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Klimchik A.,Innopolis University | Pashkevich A.,Ecole des Mines de Nantes | Pashkevich A.,CNRS Research Institute of Communication and Cybernetics of Nantes
Mechanism and Machine Theory | Year: 2017

The paper deals with comparison of industrial manipulators of serial and quasi-serial architecture. It proposes a new methodology that is based on estimation of the robot accuracy for three typical manufacturing tasks that are optimally located within the robot workspace. To cover wide range of applications, the set of isotropic, quasi-isotropic and extended benchmark tasks are considered and relevant compliance errors are evaluated taking into account the end-effector deflections caused by the external forces. It is shown that regardless of the benchmark task, the serial manipulators are preferable for small and medium tasks while the quasi-serial ones’ better suit to large-dimensional tasks only. The proposed technique was applied to the architecture comparison analysis of 15 industrial robots of both serial and quasi-serial manipulators with similar working radius and payload about 200 kg. © 2016 International Federation for the Promotion of Mechanism and Machine Science


DE CARVALHO D.,Innopolis University
Mathematical Structures in Computer Science | Year: 2017

The multiset-based relational model of linear logic induces a semantics of the untyped λ-calculus, which corresponds with a non-idempotent intersection type system, System R. We prove that, in System R, the size of type derivations and the size of types are closely related to the execution time of λ-terms in a particular environment machine, Krivine's machine. Copyright © Cambridge University Press 2017


Brown J.A.,Innopolis University | Ashlock D.A.,University of Guelph
2016 IEEE Symposium Series on Computational Intelligence, SSCI 2016 | Year: 2016

This study presents an application of the Multiple Worlds Model of Evolution. The goal is to model radio stations in a given market. The model captures listener demographics and maximizes listeners, while securing advertising revenue. Listener preferences for different types of content are set as positive (like) and negative (dislike) integers, allowing surveys of the demographic to act as the model parameters directly. Fitness evaluation is performed with a modeled hour of radio playtime where stations can select between a set of content types and advertisements. Advertisements provide fitness in the form of advertising revenues; however, listeners will only stay on a station which provides content they enjoy. The Multiple Worlds Model is a form of multiple population evolutionary algorithm. It evaluates fitness based on the actions of one member from each population, and has no genetic transfer of information between populations. Each population can thus specialize. In the current study, such specialization is a self-organization of focused (e.g. rock or country) stations via adaption to listener preferences. The model is examined using different numbers of independent populations with even splits among demographic types. The evolved stations show differences in playlists where the profiles differ in their enjoyments and convergence between stations where the listener profiles are similar. © 2016 IEEE.


Remencius T.,Connexx S.r.L. | Sillitti A.,Free University of Bozen Bolzano | Succi G.,Innopolis University
Information Sciences | Year: 2016

Most of the research effort in the area of software analysis is focused on the perspective of the developer (as in "software developing company") and the ways how the software development process could be improved. However, that is not the only type of software assessment common in the industry. There are also assessments that are commissioned by other parties, such as the primary recipients of the software solutions or courts dealing with legal cases that are related to software products or services. This work presents one such case-study that was performed for a public administration in Italy. The paper describes the assessment itself and also points out the need for more focused research by providing a comparison between developer-oriented and customer-oriented assessment types. © 2015 Elsevier Inc. All rights reserved.


Catano N.,Innopolis University | Rivera V.,Innopolis University
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2016

Event-B is a formal specification language and a methodology used to build software systems. Formal specifications are more useful when they can be executed. An executable formal specification provides insight on the behaviour of the system being modelled w.r.t an expected behaviour. This paper presents a tool that generates executable implementations of Event-B models. The tool is implemented as a plug-in of the Rodin platform, an Eclipse IDE that provides a set of tools to work with Event-B models. Our tool has extensively been used for generating code for Event-B models of Android applications, reactive systems, Smart Cards, searching algorithms, among others. The first author regularly uses EventB2Java in teaching to help master students of Software Engineering to get a better grasp of the behaviour of a model in Event-B and to detect inconsistencies in the model. © Springer International Publishing Switzerland 2016.


Johard L.,Innopolis University | Ruffaldi E.,Sant'Anna School of Advanced Studies
Pattern Recognition Letters | Year: 2016

Trajectories and parameterized curves are data types of growing importance. Many measures for such data have been proposed in order to provide analogues to the mean and variance of vectors. We identify a counterintuitive oscillating behavior of dynamic time warp-based averages on certain data sets. We present an algorithm that combines ideas from both self-organizing maps and dynamic time warping that avoids these oscillations and hence promises more representative curve averages. These improvements also allow for accurate estimation of the piece-wise variance for a set of general N-dimensional trajectories. The run-time performance is demonstrated on movement data from rowing, where we are able to provide performance feedback in real-time to users in a simulator. © 2016 Elsevier B.V.


Meyer B.,ETH Zurich | Meyer B.,Innopolis University
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2015

Deadlocks remain one of the biggest threats to concurrent programming. Usually, the best programmers can expect is dynamic deadlock detection, which is only a palliative. Object-oriented programs, with their rich reference structure and the resulting presence of aliasing, raise additional problems. The technique developed in this paper relies on the “alias calculus” to offer a completely static and completely automatic analysis of concurrent object-oriented programs. The discussion illustrates the technique by applying it to two versions of the “dining philosophers” program, of which it proves that the first is deadlock-free and the second deadlock-prone. © Springer-Verlag Berlin Heidelberg 2015.


Brown J.A.,Innopolis University
2015 IEEE Conference on Computational Intelligence in Bioinformatics and Computational Biology, CIBCB 2015 | Year: 2015

Side Effect Machines (SEMs) have been used as a evolutionary representation in a variety of studies dealing with the classification of data for bioinformatic studies. However, up to this point there has been no formalism of the SEM in terms of its representational ability and placement within the Chomsky hierarchy; only a statement that it is a generalization of a Deterministic Finite Automation (DFA), without proof, has been provided. This paper aims to rectify that situation by presenting a formal look at SEMs in terms of the languages which they are known to accept. We give a constructive proof of how a SEM is a generalization of a DFA and are therefore able to be used to accept languages. Constructive proofs for SEMs accepting families of context-free and context-sensitive languages are also provided. © 2015 IEEE.


Brown J.A.,Innopolis University
2015 IEEE Conference on Computational Intelligence and Games, CIG 2015 - Proceedings | Year: 2015

Recent evaluations of Procedural Content Generation (PCG) methods have examined the use of personas as part of there evaluative functions. Personas, models of a user, have a number of complaints leveled against them by researchers as to their use as design tools: That there is poor empirical proof that they improve the design process, poor definitions lead to them not modeling actual uses, and they do not give any quantitative information for evaluation using a scientific approach. Examined is a framework in which a persona is not just defined as a model of a user, but is a contract list of player goals and actions available in the game. By defining a persona as a goal driven AI, it joins the idea of personas with a more qualitative evaluative method as well as not allowing developers to apply their own biases. Further, it allows for a persona to work beyond the design stage of the development, and into the maintenance stages. Taking into account game-play telemetry, it allows for personas to be used as tools for lessons learned for future developments. © 2015 IEEE.


De Carvalho D.,Innopolis University | Tortora De Falco L.,Third University of Rome
Information and Computation | Year: 2016

We prove that given two cut-free nets of linear logic, by means of their relational interpretations one can determine: 1) whether or not the net obtained by cutting the two nets is strongly normalizable, 2) (in case it is strongly normalizable) the maximum length of the reduction sequences starting from that net. As a by-product of our semantic approach, we obtain a new proof of the conservation theorem for Multiplicative Exponential Linear Logic (MELL) which does not rely on confluence; this yields an alternative proof of strong normalization for MELL. © 2016 Elsevier Inc. All rights reserved.

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