Network Functions Virtualization is focused on\ud
migrating traditional hardware-based network functions to\ud
software-based appliances running on standard high volume\ud
severs. There are a variety of challenges facing early adopters of\ud
Network Function Virtualizations; key among them are resource\ud
and service mapping, to support virtual network function orchestration.\ud
Service providers need efficient and effective mapping\ud
capabilities to optimally deploy network services. This paper\ud
describes TeNOR, a micro-service based network function virtualisation\ud
orchestrator capable of effectively addressing resource\ud
and network service mapping. The functional architecture and\ud
data models of TeNOR are described, as well as two proposed\ud
approaches to address the resource mapping problem. Key\ud
evaluation results are discussed and an assessment of the mapping\ud
approaches is performed in terms of the service acceptance ratio\ud
and scalability of the proposed approaches
This paper presents a study of European Portuguese elderly speech, in which the acoustic characteristics of two groups of elderly speakers (aged 60-75 and over 75) are compared with those of young adult speakers (aged 19-30). The correlation between age and a set of 14 acoustic features was investigated, and decision trees were used to establish the relative importance of the features. A greater use of pauses characterized speakers aged 60 and over. For female speakers, speech rate also appeared to correlate with age. For male speakers, jitter distinguished between speakers aged 60-75 and older. The correlation between the features and speech recognition performance was also investigated. Word error rate correlated mostly with the use of pauses, speech rate, and the ratio of long phone realizations. Finally, by comparing the phone sequences used by the recognizer on the most frequent words, we observed that the young adult speakers reduced schwas more than the elderly speakers. This result seems to confirm the common idea that young speakers reduce articulation more than older speakers. Further investigation is needed to confirm this result by determining whether this is due to ageing or to the generation gap.
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