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International Journal of Database Theory and Application 2016年第7期9卷 121-134页

作者： Li, Xiangyu He, Shuibing Xu, Xianbin Wang, Yang School of computer Wuhan University Wuhan Hubei430072 China State Key Laboratory of High Performance Computing National University of Defense Technology Changsha Hunan410073 China Shenzhen Institute of Advanced Technology China Academy of Science Shenzhen518055 China Wuhan Donghu University Wuhan Hubei430212 China

We propose JAS, a JVM-based active storage framework for object-based storage systems. JAS programs the active storage functions of users as java codes, and allows them to be executed on different OSD platforms (Operating systems and hardware) without recompiling. JAS offloads the active storage code from a client to the OSD by extending the standard OSD command set, and execute the java code on the OSD on-demand by triggering them through extended client interfaces. We have implemented JAS under an object-based storage system. Experimental results show that the JVM-based active storage framework has been successfully set up, and this cross-platform design can largely improve system performance. © 2016 SERSC.

关键词： java programming language

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Incorporating software agents in automated personal software process (PSP) tools

Incorporating software agents in automated personal software...

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International Symposium on Communications and Information Technologies (ISCIT)

作者： Hazrina Hassan Mohd Hairul Nizam Md. Nasir Shukor Sanim Mohd Fauzi Department of Software Engineering Faculty of Computer Science & Information Technology University of Malaya Kuala Lumpur Malaysia Faculty of Information Technology and Quantitative Science Universiti Teknologi MARA Perlis Malaysia

ISBN: (纸本)9781424445219

The PSP-Expert Visualization Agent (EVA) is designed for software engineers specifically to introduce the agent-oriented concept, as well as to automate all the processes and fields involved in PSP. Currently, some developers of PSP automated tools include the agent's element in their system that focuses on sensor-based tracking of lines of code. However, none of them fully utilize this element for other purposes or provide the agent with a personal assistant for the software engineer. This sensor-based tracking is limited to Eclipse environments such as java and is not compatible with the use of web platforms as a PSP automated tool. The PSP-EVA system is required to perform several tasks. There are three agents that exist within the system: Interface Agent (IA), TaskAgent (TA), and SearchAgent (SA). By incorporating the multi-software agent in this automation system, PSP-EVA is able to have ready-access to applications and also to provide a visual representation of performance to the user. Additionally, evaluation of software engineers and team performance can be easily derived and evaluated statistically.

关键词： Intelligent agents Software engineering REG1A gene Postsynaptic Potentials BPIFA2 gene RIDA gene Agents Automation personal assistant visual representation computer software java java programming language Elements

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Identifying reference objects by hierarchical clustering in java environment

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International Journal of Computer Science Issues 2011年第5 5-3期8卷 480-485页

作者： Saha, Rahul Geetha, G. Department of Computer Science and Engineering Lovely Professional University Phagwara Punjab India Department of Computer Sciences and Applications Lovely Professional University Phagwara Punjab India

Recently java programming environment has become so popular. java programming language is a language that is designedto be portable enough to be executed in wide range of computers ranging from cell phones to supercomputers. Computer programs written in java are compiled into java Byte code instructions that are suitable for execution by a java Virtual Machine implementation. java virtual Machine is commonly implemented in software by means of an interpreter for the java VirtualMachine instruction set. As an object oriented language, java utilizes the concept of objects. Our idea is to identify thecandidate objects' references in a java environment through hierarchical cluster analysis using reference stack and execution stack.

关键词： java programming language

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Portable resource control in java 01

Portable resource control in Java

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ACM SIGPLAN Conference on Object-oriented programming, Systems, languages, and Applications

作者： Walter Binder Jane G. Hulaas Alex Villazon CoCo Software Engineering Margaretenstr. 22/9 A-1040 Vienna Austria University of Geneva rue G?n?ral Dufour 24 CH-1211 Geneva 4 Switzerland

ISBN: (纸本)1581133359

Preventing abusive resource consumption is indispensable for all kinds of systems that execute untrusted mobile coee, such as mobile object sytems, extensible web servers, and web browsers. To implement the required defense mechanisms, some support for resource control must be available: accounting and limiting the usage of physical resources like CPU and memory, and of logical resources like threads. java is the predominant implementation language for the kind of systems envisaged here, even though resource control is a missing feature on standard java platforms. This paper describes the model and implementation mechanisms underlying the new resource-aware version of the J-SEAL2 mobile object kernel. Our fundamental objective is to achieve complete portability, and our approach is therefore based on java bytecode transformations. Whereas resource control may be targeted towards the provision of quality of service or of usage-based billing, the focus of this paper is on security, and more specificlly on prevention of denial-of-service attacks orginating from hostile or poorly implemented mobile code.

关键词： security management of resources java java programming language Security Resource utilization Web Browser mobile codes Online resources Mobile Defence mechanisms central processing units

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Search4Code: Code search intent classification using weak supervision

arXiv

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arXiv 2020年

作者： Rao, Nikitha Bansal, Chetan Guan, Joe Microsoft Research United States Microsoft United States

Developers use search for various tasks such as finding code, documentation, debugging information, etc. In particular, web search is heavily used by developers for finding code examples and snippets during the coding process. Recently, natural language based code search has been an active area of research. However, the lack of real-world large-scale datasets is a significant bottleneck. In this work, we propose a weak supervision based approach for detecting code search intent in search queries for C# and java programming languages. We evaluate the approach against several baselines on a real-world dataset comprised of over 1 million queries mined from Bing web search engine and show that the CNN based model can achieve an accuracy of 77% and 76% for C# and java respectively. Furthermore, we are also releasing Search4Code, the first large-scale real-world dataset of code search queries mined from Bing web search engine. We hope that the dataset will aid future research on code search. Copyright © 2020, The Authors. All rights reserved.

关键词： java programming language

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GEOLOCATION OF PHOTOGRAPHS BY MEANS OF HORIZON MATCHING WITH DIGITAL ELEVATION MODELS

GEOLOCATION OF PHOTOGRAPHS BY MEANS OF HORIZON MATCHING WITH...

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IEEE International Geoscience and Remote Sensing Symposium

作者： Samuel W. Pritt Frederick Community College

ISBN: (纸本)9781467311601

Geolocation is the process of assigning geographic coordinates to photographs. It is important in counter terrorism, photo tourism, community remote sensing, and robot navigation. Prior work has focused on matching photographs against a database of already geolocated photographs. This project adopts a different approach, extracting a horizon curve from the photograph and searching for the best match with horizon curves generated from digital elevation models. A wide variety of photographs were tested from eastern and western regions of the U.S. They included landscapes, beach scenes, and even indoor scenes with the horizon visible through a window. The horizons differed in length, orientation, distinctiveness, visibility, and vegetation cover. The geographic search regions were extensive and covered over 500,000 square kilometers. Of 100 photographs tested, the algorithm successfully geolocated 83%, with a mean error of only 300 meters. It was learned that successful geolocation must account for the curvature of the earth, atmospheric refraction, and terrain elevation inaccuracies. Implemented in java on a PC, the execution time is proportional to the search area and averages 7600 square kilometers per minute.

关键词： Image processing Geolocation Horizon Digital elevation model Photographs Horizon Geographical Locations mean errors Mobile robot navigation Optimal matching execution time java java programming language

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Dependability as a Cloud Service - A Modular Approach

Dependability as a Cloud Service - A Modular Approach

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IEEE/IFIP International Conference on Dependable Systems and Networks Workshops

作者： Jan S. Rellermeyer Saurabh Bagchi IBM Research Austin Research Lab Purdue University School of Electrical and Computer Engineering

ISBN: (纸本)9781467322645

Failures of services on cloud platforms are only to be expected. To deal with such failures, one is naturally inclined to use the traditional measure of replication. However, replication of services on distributed cloud platforms poses several challenges that are not well met by today's java middleware systems. These challenges are the need to isolate state in the application components so that easy migration and recovery are possible and the requirement for client transparency when dealing with different replicated service instances. For example, java Enterprise Edition (JEE) makes it difficult to have transparent replication of services due to the above two reasons plus the fine-grained nature of interactions between its components (the Enterprise java Beans). In this paper, we show parts of the design of OSGi, a specification defining a dynamic component system in java, that make it suitable for the above task. We then propose two extensions to OSGi which will allow exposing and exporting application component state and transparent invocation of service instances. These two together can enable easy replication and recovery from failures in cloud environments. We show through experiments that our prototype can migrate a failed service quickly enough to a new machine so that a client experiences only a moderate increase in service invocation time during system recovery.

关键词： modular approach java java programming language Legal Services system recovery part design CALLING(programming) Clients customers CLOUDS Clouds failures Replication

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Compiling a High-Level language for GPUs 12

Compiling a High-Level Language for GPUs

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ACM SIGPLAN Conference on programming language Design and Implementation

作者： Christophe Dubach Perry Cheng Rodric Rabbah David F. Bacon Stephen J. Fink University of Edinburgh IBM Research

ISBN: (纸本)9781450312059

languages such as OpenCL and CUDA offer a standard interface for general-purpose programming of GPUs. However, with these languages, programmers must explicitly manage numerous low-level details involving communication and synchronization. This burden makes programming GPUs difficult and error-prone, rendering these powerful devices inaccessible to most programmers. We desire a higher-level programming model that makes GPUs more accessible while also effectively exploiting their computational power. This paper presents features of Lime, a new java-compatible language targeting heterogeneous systems, that allow an optimizing compiler to generate high quality GPU code. The key insight is that the language type system enforces isolation and immutability invariants that allow the compiler to optimize for a GPU without heroic compiler analysis. Our compiler attains GPU speedups between 75% and 140% of the performance of native OpenCL code.

关键词： Design languages Performance GPU OpenCL java Lime Streaming Map Reduce language Streaming GRAPPER PICK UP Graphics Processing Unit lime Reduce java java programming language compilers MAPPING(MATHEMATICAL) language form Computer personnel high level language(hll) Optimising compilers general purpose programming

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Lessons learned from an Internet GP information system

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MEDICAL INFORMATICS 1998年第3期23卷 245-252页

作者： Briggs, JS Bradley, MP Univ Portsmouth Sch Comp Sci & Math Object People Southsea PO4 8JF England

We describe the prototype of an application that in actual use would allow GPs to find out more information about consultants at hospitals. This would aid the GP in making the decision about which consultant a patient should be referred to. The requirements of the application from the GP's perspective are described, together with some of the issues that have to be resolved before hospitals can provide the necessary information in a standard format. The application is implemented as a client-server system using standard Internet technologies such as java and HTML. This architecture has a number of advantages but also revealed some issues concerning security and the format of data, among other things. The project showed that there is a desire for such a system and that that desire can be fulfilled at a relatively low cost.

关键词： Internet application java programming language primary healthcare patient referral

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Cache and energy efficient algorithms for Nussinov RNA folding

Cache and energy efficient algorithms for Nussinov RNA foldi...

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IEEE International Conference on Computational Advances in Bio and Medical Sciences (ICCABS)

作者： Chunchun Zhao Sartaj Sahni Department of Computer and Information Science and Engineering University of Florida USA

ISBN: (纸本)9781509042005

We propose three cache-efficient algorithms, ByRow, ByRowSegment and ByBox, for RNA folding using Nussinov's dynamic programming equations [1]. These algorithms, along with the cache-efficient Transpose algorithm of Li et al [2]. and the Classical algorithm of Nussinov are analyzed using a simple LRU cache model. For this model, Classical has the highest number of cache misses followed by Transpose, ByRow, ByRowSegment, and ByBox (in this order). Extensive experiments conducted on a single core of a Xeon E5 server, using two programming languages-C and java-show that cache efficiency translates into time and energy efficiency. For example, our benchmarking shows that, when the algorithms are programmed in C, our ByBox algorithm reduces run time by as much as 91∶3% and energy consumption by as much as 90∶8% relative to Classical and by as much as 56∶3% and 57∶9%, respectively, relative to Transpose. In the java programming language, ByBox takes up to 88∶9% less time than Classical and up to 74∶9% less than Transpose. Also, using the same amount of memory, the algorithms proposed by us can solve problems up to 40% larger than those solvable by Transpose.

关键词： Transpose Cache memory RNA Folding Energy efficiency efficient algorithm algorithms java programming language Runtime BENCHMARKS

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