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Content available Dependability aspects of language technology infrastructure
Walkowiak T., Pol M.
Journal of Polish Safety and Reliability Association
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2018
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Vol. 9, No. 3
101--108
EN
The paper presents dependability analysis of CLARIN-PL Centre of Language Technology (CLT). It describes infrastructure, high availability aspects and micro-service architecture used in CLARIN-PL applications. Microservices architecture improves dependability in respect to availability and reliability and to some extent safety. It is comprised of the mechanisms of reliable communication of applications, replication, recovery, and transaction processing. CLT has also a set of components for failure detection, monitoring and autonomic management, and distributed security policy enforcement.
2
Content available The impact of administrator working hours on the reliability of the Centre of Language Technology
Walkowiak T., Pol M.
Journal of Polish Safety and Reliability Association
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2017
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Vol. 8, No. 1
167--174
EN
The paper presents reliability analysis of CLARIN-PL Centre of Language Technology (CLT). The CLT is a Polish part of the language technology infrastructure developed by CLARIN project. The main goal of which is to support researchers in humanities and social sciences. The infrastructure is a complex computer system that enables combining language tools with language resources into processing chains. Authors present the system structure, analyse types of faults and define the CLT reliability model. The model takes into account the fact the time gap, between the failure and the repair of the system is not exponential since repair actions are taken only when administrators are at work (assuming that administrators are not working 24/7). The model is used to estimate reliability metrics (mean time and 90th percentile of relative down time and relative partial operational time) by a use of Monte-Carlo simulation. Moreover, analysis of possible improvement in the CLT organisation and its influence on the estimated metrics is given.
3
Content available remote Jeszcze jeden zespół. Fundusz obroniony
Pol M.
Geodeta : magazyn geoinformacyjny
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2003
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nr 1
58--60
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