IADIS INTERNATIONAL JOURNAL ON WWW/INTERNET

16-28

Authors: Bahareh Zarei and Martin Gaedke

An increasing number of companies offer their capabilities as Web services and publish them through public registries. Such Web services enable users to access and manipulate online data programmatically. Moreover, they can be deployed in service-based systems (SBS) or composite web applications and mashups to offer value-added services. A crucial step in deploying Web services is the Web service Discovery. Selecting the best Web service candidates to address the needs of service requesters (e.g., SBS designers) is an important task in SBSs and can influence the quality of the resulting composite web application. So far proposed solutions for addressing this challenge, which are mainly categorized into Syntactic-based and Semantic-based, are either too complex for end-users which hinders their large-scale adaptation or suffer from low precision and recall. Considering the recent trend of shifting the development activities more and more towards the end-users, we propose an approach based on chat-bot technology to allow end-users to select a set of best-fitting Web services according to their goals. Conversational Interfaces also known as chatbots aim at providing users a more natural framework to interact with web applications and devices. The advantage of DISCO compared to the state-of-the-art approaches is leveraging the natural language as the communication medium and alleviating the need for end-users to have technical knowledge about the service’s structure and location. We conducted sets of experiments by recruiting 8 test subjects to query the chatbot. The results achieve high precision and recall.

41-56

Authors: Bráulio Alturas and Junior Marimbique

Higher education institutions are characterized by the growth of the student population, the need to align their programs with market demand, and the adoption of new management and service delivery techniques, making it essential to use information technologies. This research project aims to design an information system prototype for a higher education admission management information system and propose open source software engineering tools that can assist its development. This paper presents the main concepts related to information systems, higher education and open source software. The prototype was designed following the object-oriented software development methodology and the software engineering tools were based on the comparison of two tools to three information system software elements namely forms, reports and web portal.

76-88

Authors: Roumen Vragov and Nanda Kumar

Over the last 20 years scientists from many disciplines have proposed mechanisms that allow decision-makers to negotiate directly on common outcomes. The Internet-enabled versions of these mechanisms can allow citizens to practice direct democracy and thus increase participation in governance. This study investigates the information requirements of one of these mechanisms – the Online Compensation Election. More specifically the study tests if the level of detail of the information available to a voter about the preference intensities of other voters affects voting behavior. We find that a decrease in the granularity of the real preference intensity information about others does not affect voting behavior and the referendum’s compensation outcomes We discuss the implications of these results and possible future directions for research.

101-115

Authors: Hideki Okita, Hayato Hoshihara, Norihisa Komoda and Toru Fujiwara

We propose a dynamically prioritized failure management method according to the reliability model that the failure rate of virtual machine varies in its life cycle. When using a combination of server monitoring with ping and network connection check with Ethernet OAM, the system sets higher priorities to the port connected to a long running server, and the port within a certain time after the connection change or virtual machine addition is set. The system then selects the ports from the higher priority port to be monitored by Ethernet OAM. As a result of the evaluation by the simulation, by dynamically selecting the port to be monitored for Ethernet OAM using the proposed method, it was confirmed that more than a third of all failures were detected with Maintenance End Points which number is only a tenth of that of servers in a data center. In the data center for cloud services running many VMs, it is possible to shorten the recovery from VM failure while suppressing the number of objects monitored by Ethernet OAM by using this method.