Numer czasopisma
Computer Science
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ISSN: 1508-2806
e-ISSN:
Data wydania
2012
Rocznik
Vol. 13
Numer
No. 4
Prawa dostępu
Dostęp: otwarty dostęp
Uwagi:
Prawa: CC BY 4.0 
Uznanie autorstwa 4.0 Międzynarodowe (CC BY 4.0)
Strony
Opis
Rocznik czasopisma (rel.)
Rocznik czasopisma
Computer Science
Vol. 13 (2012)
Artykuły numeru (rel.)
Artykuł
Dostęp ograniczony
Distributed web-scale infrastructure for crawling, indexing and search with semantic support
(2012) Dlugolinský, Štefan; Šeleng, Martin; Laclavík, Michal; Hluchý, Ladislav
In this paper, we describe our work in progress in the scope of web-scale information extraction and information retrieval utilizing distributed computing. We present a distributed architecture built on top of the MapReduce paradigm for information retrieval, information processing and intelligent search supported by spatial capabilities. Proposed architecture is focused on crawling documents in several different formats, information extraction, lightweight semantic annotation of the extracted information, indexing of extracted information and finally on indexing of documents based on the geo-spatial information found in a document. We demonstrate the architecture on two use cases, where the first is search in job offers retrieved from the LinkedIn portal and the second is search in BBC news feeds and discuss several problems we had to face during the implementation. We also discuss spatial search applications for both cases because both LinkedIn job offer pages and BBC news feeds contain a lot of spatial information to extract and process.
Artykuł
Dostęp ograniczony
Towards implementing virtual data infrastructures - a case study with iRODS
(2012) Röblitz, Thomas
Scientists demand easy-to-use, scalable and flexible infrastructures for sharing, managing and processing their data spread over multiple resources accessible via different technologies and interfaces. In our previous work, we developed the conceptual framework VISPA for addressing these requirements. This paper provides a case study assessing the integrated Rule-Oriented Data System (iRODS) for implementing the key concepts of VISPA. We found that iRODS is already well suited for handling metadata and sharing data. Although it does not directly support provenance information of data and the temporal provisioning of data, basic forms of these capabilities may be provided through its customization mechanisms, ie rules and micro-services.
Artykuł
Dostęp ograniczony
Translation of use case scenarios to Java code
(2012) Śmiałek, Michał; Jarzębowski, Norbert; Nowakowski, Wiktor
Use cases are usually treated as second class citizens in the software development chain based on models. Their textual descriptions (scenarios) are treated as informal input to more formal design models that can then be (semi-)automatically transformed down to code. In this paper we will show that use case scenarios can gain precise metamodel-based notation and semantics enabling automatic processing. What is more, we will show transformation algorithms that can transform use case scenarios directly to dynamic code in Java. The presented transformation can generate the full structure of the system following the MVP architectural pattern, including complete method contents for the application logic (Presenter) and presentation (View) layers. It also provides a code skeleton for the domain logic (Model) layer. The use case notation and the transformation were implemented within a sophisticated tool suite. Based on this, the paper discusses the evaluation efforts based on a case study.
Artykuł
Dostęp ograniczony
Recovery and migration of application logic from legacy systems
(2012) Nowakowski, Wiktor; Śmiałek, Michał; Ambroziewicz, Albert; Jarzębowski, Norbert; Straszak, Tomasz
Future Internet technologies necessitate dramatic changes in system design, delivery and usage patterns. For many legacy applications it means that their further development and transition to the Internet becomes problematic or even impossible due to the obsolescence of technologies they use. Replacement of the old system with the new one, built from scratch, is usually economically unacceptable. Therefore, there is a call for methods and tools supporting the automated migration of legacy systems into a new paradigm. This paper proposes a tool supported method for recovery and migration of application logic information from legacy systems. The information extracted from a legacy application is stored in the form of precise requirement-level models enabling automated transformation into a new system structure in a model-driven way. Evaluation of the approach is based on a case study legacy system.
Artykuł
Dostęp ograniczony
An evolution process for service-oriented systems
(2012) Zalewski, Andrzej; Szlenk, Marcin; Kijas, Szymon
Evolution of service-oriented systems is quite a new research area, which becomes more and more important as engineering challenges move from enabling service-orientation onto the maintenance and evolution of already developed service-oriented systems. However, the development of suitable evolution processes and methodologies is still an open research problem. The evolution process presented in this paper has been designed to address the evolution of service-oriented systems, which are technically built out of a set of service compositions. The presented process comprises phases and tasks compliant with ISO 20000. The underlying model of service-oriented system consisting of business processes and corresponding service composition models has also been presented. A traceability model and tools supporting change impact analysis have also been provisioned for. Preliminary industrial validation indicates that the evolution process should be easy to adapt by the industry.
Artykuł
Dostęp ograniczony
Mobile social networks for live meetings
(2012) Wrzeszcz, Michał; Kitowski, Jacek
In this article, we present an idea of combining social networking websites and modern mobile devices abilities to transfer social networking activity to a higher level. Nowadays, these devices and websites are used to offer ability of remote communication (phone calls, message exchange etc.), which potentially can be used to notify people about meetings in the real world. Since the current social network models do not provide enough information for such notification (social networking websites are examples of social networks) a new social network model that will be suitable for the above mentioned application is proposed and a new social platform that base on mobile devices is introduced. This platform can notify users when their friends are nearby. The paper presents the model and the simulation that verifies the approach
Artykuł
Dostęp ograniczony
Enriching WSN environment with context information
(2012) Konieczny, Marek
Currently the Internet of Things environment suffer from a variety of unique problems such as low throughput, inadequate support for mobility and notcompatible (and often close) application environments. However, characteristic of physical environment often provides opportunities to address these problems. This paper explores concepts of enriching the WNS environment with context-based information. By context we consider all data available in sensors environment, not only data processed by them. Currently this data are not utilized by sensors, but we think that they can improve overall functionality of the sensor network. We also discuss the practical challenges facing the integration of such an approach into the sensor application stack.
Artykuł
Dostęp ograniczony
An analysis of methods for sharing an electronic platform of public administration services using cloud computing and service oriented architecture
(2012) Hamiga, Maciej; Jarząb, Marcin
This paper presents a case study on how to design and implement a public administration services platforms, using the SOA paradigm and cloud model for sharing among citizens belonging to particular districts and provinces, providing tight integration with an existing ePUAP system. The basic requirements, architecture and implementation of the platform are all discussed. Practical evaluation of the solution is elaborated using real-case scenario of the Business Process Management related activities.
Artykuł
Dostęp ograniczony
Consensus as a tool supporting customer behaviour prediction in Social CRM systems
(2012) Czyszczoń, Adam; Zgrzywa, Aleksander
Social Customer Relationship Management systems represent a new area in the field of CRM which together with rapid development of Social Networks and Social Media has acquired strategic importance for many companies. As a response to ongoing challenges related to growing customer expectations, in this paper we present intelligent tools for customer behaviour prediction in Social CRM systems. The use of the consensus approach is aimed at resolving contradictory forecasts of customer behaviour provided by different agents working as independent Artificial Neural Networks systems. The goal of the presented tool is to improve prediction functionality of customer behaviour.
Artykuł
Dostęp ograniczony
Consideration of the specifics of understanding textual communiqués in designing dialogues with a user of an information system
(2012) Susłow, Walery
The paper presents a proposal to take into account the language comprehension paradigm in an attempt to improve the design methodology of human-computer dialogues. It is assumed that the user treats a system as a subject, i.e. perceives communication with the system as a kind of discourse and intuitively treats it as cognition of the world through a fixed image of objective linguistic signs. Due to the fact that every end-user of a computer system has an individual linguistic competence, thesaurus, habits, previous experiences, one can never guarantee that identical semantic references arise in a variety of audiences. The situation becomes more stable if one considers the communication aspect of comprehension on the basis of practice (familiarity of things). It may be expected that a qualified professional user will commit fewer errors, caused by a poor dialogue understanding while interacting with the system. Therefore, the main task of a designer is to speed up and facilitate the learning process, which can be achieved by running the process of constructive rational understanding.