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conference on Imaging and Multimedia Analytics in a Web and Mobile World

作者： Savakis, Andreas Quraishi, Mohammad Faiz Minnehan, Breton Rochester Inst Technol Dept Comp Engn Rochester NY 14623 USA

ISBN: (纸本)9781628414981

With the growing ubiquity of mobile devices, advanced applications are relying on computer vision techniques to provide novel experiences for users. Currently, few tracking approaches take into consideration the resource constraints on mobile devices. Designing efficient tracking algorithms and optimizing performance for mobile devices can result in better and more efficient tracking for applications, such as augmented reality. In this paper, we use binary descriptors, including Fast Retina Keypoint (FREAK), oriented FAST and Rotated BRIEF (ORB), Binary Robust Independent Features (BRIEF), and Binary Robust Invariant Scalable Keypoints (BRISK) to obtain real time tracking performance on mobile devices. We consider both Google's Android and Apple's iOS operating systems to implement our tracking approach. The Android implementation is done using Android's Native Development Kit (NDK), which gives the performance benefits of using native code as well as access to legacy libraries. The iOS implementation was created using both the native objective-C and the C++ programing languages. We also introduce simplified versions of the BRIEF and BRISK descriptors that improve processing speed without compromising tracking accuracy.

关键词： Binary Descriptors object Tracking Mobile Processing Android iOS

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Static Analysis of Event-Driven *** JavaScript applications

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ACM SIGPLAN NOTICES 2015年第10期50卷 505-519页

作者： Madsen, Magnus Tip, Frank Lhotak, Ondrej Univ Waterloo Waterloo ON N2L 3G1 Canada Samsung Res Amer Mountain View CA USA

Many JavaScript programs are written in an event-driven style. In particular, in server-side Node. js applications, operations involving sockets, streams, and files are typically performed in an asynchronous manner, where the execution of listeners is triggered by events. Several types of programming errors are specific to such event-based programs (e.g., unhandled events, and listeners that are registered too late). We present the event-based call graph, a program representation that can be used to detect bugs related to event handling. We have designed and implemented three analyses for constructing event-based call graphs. Our results show that these analyses are capable of detecting problems reported on StackOverflow. Moreover, we show that the number of false positives reported by the analysis on a suite of small Node. js applications is manageable.

关键词： event based-systems static analysis JavaScript

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How Scale Affects Structure in Java Programs

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ACM SIGPLAN NOTICES 2015年第10期50卷 675-694页

作者： Lopes, Cristina V. Ossher, Joel Univ Calif Irvine Bren Sch Informat & Comp Sci Irvine CA 92697 USA

Many internal software metrics and external quality attributes of Java programs correlate strongly with program size. This knowledge has been used pervasively in quantitative studies of software through practices such as normalization on size metrics. This paper reports size-related super- and sublinear effects that have not been known before. Findings obtained on a very large collection of Java programs - 30,911 projects hosted at Google Code as of Summer 2011 - unveils how certain characteristics of programs vary disproportionately with program size, sometimes even non-monotonically. Many of the specific parameters of nonlinear relations are reported. This result gives further in-sights for the differences of "programming in the small" vs. "programming in the large." The reported findings carry important consequences for OO software metrics, and software research in general: metrics that have been known to correlate with size can now be properly normalized so that all the information that is left in them is size-independent.

关键词： object oriented Programs Metrics Linear Regression Models

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On Component-Based Software Development for Multiprocessor Real-Time systems 21

On Component-Based Software Development for Multiprocessor R...

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21st IEEE International conference on Embedded and Real-Time Computing systems and applications (RTCSA)

作者： Khalilzad, Nima Behnam, Moris Nolte, Thomas Malardalen Univ MRTC Vasteras Sweden

ISBN: (纸本)9781467378550

Component-based software development provides a modular approach to develop complex software systems. In the context of real-time systems, it is desirable to abstract the timing properties of software components using an interface for each component. The timing properties of the whole system, composed of multiple components, is studied using the component interfaces. In this paper we focus on periodic interface models. In the case of components developed for single processor platforms, for examining the system schedulability, the interfaces can be regarded as periodic tasks. Thus, making it possible to use the conventional schedulability analyses for the system level schedulability test. In the case of components developed for multiprocessors, since interfaces may have utilization larger than 100 % of a single processor, it is not possible to directly use the component interfaces for the system schedulability test. Therefore, the interfaces have to be decomposed before performing the system level schedulability test. In this paper, we target the special case of partitioned EDF for scheduling the components integrated on a multiprocessor. Therefore, the system level schedulability test is equivalent to finding a feasible allocation of component interfaces on the multiprocessor. We propose two algorithms for allocating the multiprocessor periodic interfaces. In addition, we propose an orthogonal approach for developing component-based real-time systems on multiprocessors in which components with utilization more than 100 % of a single processor are divided into smaller subcomponents before abstracting their interfaces. We show, through extensive evaluations, that our alternative approach significantly reduces the interface overhead.

关键词： Multiprocessor object oriented programming Uniprocessor real-time systems Interface Interfaces computer software Software design Software systems system level

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Extracting more object usage scenarios for API protocol mining 27

Extracting more object usage scenarios for API protocol mini...

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27th International conference on Software Engineering and Knowledge Engineering, SEKE 2015

作者： Chen, Deng Zhang, Yanduo Wang, Rongcun Qu, Binbin Ju, Jianping Wei, Wei Industrial Robot Engineering Center Wuhan Institute of Technology Wuhan China Hubei Provincial Key Laboratory of Intelligent Robot Wuhan Institute of Technology Wuhan China School of Computer Science and Technology China University of Mining and Technology Xuzhou China School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China School of Electronic Information Wuhan University Wuhan China

ISBN: (纸本)1891706373

Automatic protocol mining is a promising approach to infer precise and complete API protocols. However, the effect of the approach largely depends upon the quality of input object usage scenarios, in terms of noise and diversity. This paper aims to extract as many object usage scenarios as possible from object-oriented programs for automatic protocol mining. A large corpus of object usage scenarios can help with eliminating noise accurately and is likely to be diverse. Therefore, precise and complete protocols may be achieved. Given an object-oriented program p, generally, object usage scenarios that can be collected from a run of p is not more than the number of instances used in p. Relying on the inheritance relationship among classes, our technique can extract a maximum of n times more object usage scenarios from p, where n is the average inheritance depth of all object usage scenarios in p. In order to investigate the effect of our technique on mining protocols, we implement it in our previous prototype tool ISpecMiner and use the tool to mine protocols from several real-world applications. The experimental results show that our technique is promising to achieve complete and precise API protocols. In addition, protocols of classes that have not been used in programs can be also achieved, which is helpful for program documentation and understanding.

关键词： object oriented programming

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ACM International conference Proceeding Series

ACM International Conference Proceeding Series

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8th India Software Engineering conference, ISEC 2015

ISBN: (纸本)9781450334327

The proceedings contain 25 papers. The topics discussed include: Pravaaha: mining android applications for discovering API call usage patterns and trends;verb-based semantic modeling and analysis of textual requirements;reengineering enterprise wide legacy BFSI systems industrial case study;SARATHI: characterization study on regression bugs and identification of regression bug inducing changes: a case-study on Google chromium project;analyzing dependencies in an industrial automation engineering system;simplifying web programming;an automated approach for bug categorization using fuzzy logic;predicting object-oriented software maintainability using hybrid neural network with parallel computing concept;and lack of conceptual cohesion of methods : a new alternative to lack of cohesion of methods.

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An Opportunistic Approach to Retaining Use Cases in object-oriented Source Code

An Opportunistic Approach to Retaining Use Cases in Object-O...

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IEEE Eastern European conference on the Engineering of Computer Based systems, ECBS-EERC

作者： Ján Greppel Valentino Vranic Faculty of Informatics and Information Technologies Slovak University of Technology in Bratislava Bratislava Slovakia

Use cases are widely used to express what software systems are supposed to provide in terms of an interaction between the users and the system. Without a particular effort to preserve them, use cases dissolve in source code turning the task of locating their implementation into a major problem of change request realization. While aspect-oriented programming offers one solution to retaining use cases, there are also opportunities in the mainstream object-oriented programming languages that have no reliable support for aspect-oriented programming. This paper brings an approach to retaining use cases in source code by object-oriented means that employs three techniques: traits, the Event pattern (extracted from the Zend's framework EventManager component), and the Front Controller pattern. By these techniques, all possible kinds of use cases with the exception of specialization use cases are addressed: peer use cases, extension use cases, and inclusion use cases. Use cases are not fully modularized as in aspect-oriented software development with use cases, but the approach ensures their parts can be easily traced. The approach has been evaluated with respect to traceability on an online shop application demonstrating how a use case can be added, removed, or altered.

关键词： Registers Software Computer aided software engineering Libraries object oriented programming Computer languages

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Categories of Ontologies' applications in the Realm of Enterprise Modeling

Categories of Ontologies' Applications in the Realm of Enter...

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IEEE conference on Commerce and Enterprise Computing, CEC

作者： Monika Kaczmarek Information Systems and Enterprise Modeling University of Duisburg-Essen Essen Germany

The field of enterprise modeling (EM) is facing a number of challenges. Some of them result out of the application of informal or semi-formal modeling languages having usually semantics similar to object-oriented programming languages. The EM community has recognized ontologies as a promising way to address some of the existing problems. There is, however, a striking lack of consensus about understanding of ontology in the Information systems domain. The multiplicity of different understandings leads to an increased diversity of proposed approaches. To contribute to a better understanding of the role of ontologies in the realm of EM and of requirements they would need to meet, we distinguish and discuss different categories of applications of ontologies in the EM field. Based on their analysis, we identify the main benefits resulting out of the application of ontologies and point to the main challenges hampering their adoption. This allows to assess the maturity of this field and to identify directions of future research.

关键词： Ontologies object oriented modeling Semantics Analytical models Vocabulary Pragmatics Terminology

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Designing Camera Networks by Convex Quadratic programming

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COMPUTER GRAPHICS FORUM 2015年第2期34卷 69-80页

作者： Ghanem, Bernard Cao, Yuanhao Wonka, Peter King Abdullah Univ Sci & Technol Thuwal Saudi Arabia

In this paper, we study the problem of automatic camera placement for computer graphics and computer vision applications. We extend the problem formulations of previous work by proposing a novel way to incorporate visibility constraints and camera-to-camera relationships. For example, the placement solution can be encouraged to have cameras that image the same important locations from different viewing directions, which can enable reconstruction and surveillance tasks to perform better. We show that the general camera placement problem can be formulated mathematically as a convex binary quadratic program (BQP) under linear constraints. Moreover, we propose an optimization strategy with a favorable trade-off between speed and solution quality. Our solution is almost as fast as a greedy treatment of the problem, but the quality is significantly higher, so much so that it is comparable to exact solutions that take orders of magnitude more computation time. Because it is computationally attractive, our method also allows users to explore the space of solutions for variations in input parameters. To evaluate its effectiveness, we show a range of 3D results on real-world floorplans (garage, hotel, mall, and airport).

关键词： Categories and Subject Descriptors (according to ACM CCS) I.3.5 [Computer Graphics]: Computational Geometry and object Modeling&mdash Geometric algorithms languages and systems

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GRENAD, a Modular and Generic Smart-Grid Framework

GRENAD, a Modular and Generic Smart-Grid Framework

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3rd International conference on Innovative Network systems and applications (iNetSApp) held in conjunction with Federated conference on Computer Science and Information systems (FedCSIS)

作者： Ductor, Sylvain Gil-Quijano, Jesus-Javier Stefanovitch, Nicolas Mele, Pierrick Roger CEA LIST DM2I LADIS Digiteo Lab Bat 565Point Courrier 192Bat 425 F-91191 Gif Sur Yvette France

ISBN: (纸本)9788360810668

We present in this paper GRENAD, a Multi-Agent System based framework for the simulation and piloting of power-grids and particularly smart grids. Exploiting a component-based approach, it allows a flexible design of complex smart grid applications by providing a generic canvas where extensible, modular and reusable components, defined on the basis of their functionalities, can be easily combined and connected. Thanks to Multi-Agent approach, a set of such components can naturally be integrated into a coherent economical agent. GRENAD makes no assumption on the energy definition and eases the development of MAS control algorithms for smart grids. The level of details of the energy-related information is controllable. This information is computed either through internal physical models or by interfacing with external simulators. We present here our model, illustrate its features with a rich example which exhibits its genericity, and demonstrate how a coordination protocol can easily be integrated to it.

关键词： multi-agent systems object-oriented programming power system simulation smart power grids GRENAD MAS control algorithms complex smart grid flexible design component-based approach coordination protocol energy-related information external simulators generic smart-grid framework internal physical models multiagent system based framework power-grids Biological system modeling Buildings Cogeneration Generators Production Smart grids Software

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