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1 – 2 of 2Khai Tan Huynh, Tho Thanh Quan and Thang Hoai Bui
Service-oriented architecture is an emerging software architecture, in which web service (WS) plays a crucial role. In this architecture, the task of WS composition and…
Abstract
Purpose
Service-oriented architecture is an emerging software architecture, in which web service (WS) plays a crucial role. In this architecture, the task of WS composition and verification is required when handling complex requirement of services from users. When the number of WS becomes very huge in practice, the complexity of the composition and verification is also correspondingly high. In this paper, the authors aim to propose a logic-based clustering approach to solve this problem by separating the original repository of WS into clusters. Moreover, they also propose a so-called quality-controlled clustering approach to ensure the quality of generated clusters in a reasonable execution time.
Design/methodology/approach
The approach represents WSs as logical formulas on which the authors conduct the clustering task. They also combine two most popular clustering approaches of hierarchical agglomerative clustering (HAC) and k-means to ensure the quality of generated clusters.
Findings
This logic-based clustering approach really helps to increase the performance of the WS composition and verification significantly. Furthermore, the logic-based approach helps us to maintain the soundness and completeness of the composition solution. Eventually, the quality-controlled strategy can ensure the quality of generated clusters in low complexity time.
Research limitations/implications
The work discussed in this paper is just implemented as a research tool known as WSCOVER. More work is needed to make it a practical and usable system for real life applications.
Originality/value
In this paper, the authors propose a logic-based paradigm to represent and cluster WSs. Moreover, they also propose an approach of quality-controlled clustering which combines and takes advantages of two most popular clustering approaches of HAC and k-means.
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Keywords
Nguyen Trong Hoai, Luong Vinh Quoc Duy and Damien Cassells
Internationalization is viewed as an important strategy in the context of a country in transition from central planning to market orientation. Efforts to internationalize…
Abstract
Purpose
Internationalization is viewed as an important strategy in the context of a country in transition from central planning to market orientation. Efforts to internationalize universities are being carried out at both national and institutional levels. However, to the best of the authors’ knowledge, there has been no study to investigate how individual institutions approach internationalization and what they gain from that process. This paper aims to investigate the enhancement of teachers’ and students’ knowledge and skills using internationalization in Vietnam universities as a strategy.
Design/methodology/approach
Semi-structured interviews with leaders from 12 universities were conducted to investigate their perceptions, strategies and perceived outcomes of the internationalization process of their universities. Data analysis involved coding the transcripts of interviews into themes.
Findings
Results show that current approaches to internationalized activities in Vietnamese universities are ad hoc in nature, while resources and language incompetence of staff and students are limited. In line with other previous studies, limited resources and lack of English competence among educators and students were found to be the key obstacles and challenges for internationalized activities. The authors also note an issue that apparently has not been raised elsewhere in the relevant research literature, which is the challenge for the sustainability of knowledge production via research and publications.
Originality/value
Findings from this study not only contribute to Vietnamese universities but also to other developing institutions which do not have strong international exchange programs or have not experienced strong benefits from international exchange programs.
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