Analysis of the Publications on OntologyBased Smart Grid Applications: A Birdxe2x80x99s Eye View Smart grid ontology is a field of research recently viewed from the field of smart grid research as well as from the field of ontology research. The integration between smart grid and ontology is expected to enable the sharing of ontology among applications and stakeholders. By using the same language, the common problems that occur during applications interoperability will be prevented and solved. This brief paper intended to help researchers get an overview of the current smart grid ontology research in the world and also to know the connection between smart grid ontology paper publications with research attention leading to smart grid ontology. To do so, we conduct a comprehensive survey on three databases which are IEEE Xplore, Springer, and Elsevier ScienceDirect. From the survey, we obtained the number of smart grid ontology research studies, their citations, and the country. From the number of papers and their citations, it can be known which country has an interest in smart grid ontology research. From the results of this review, it was found that countries in continental Europe are the most widely issued publication about smart grid ontology. Similarly, the papers that cite largely dominated by countries in continental Europe.

Cutting a Path Through the IoT Ontology Jungle  A MetaSurvey Interoperability of InternetofThings(IoT) applications, being characterized by massive heterogeneity of xe2x80x9cthingsxe2x80x9d, has become a key challenge in IoT research due to the omnipresence of smart devices. In order to achieve adequate interoperability levels, semantic technologies in terms of ontologies are a promising paradigm. Due to the plethora of IoT ontologies available, one gets, however, easily lost in the ontology jungle due to the lack of an overall and uptodate view on the IoT ontology landscape. In this respect, the aim of this paper is to act as an umbrella across several uptodate IoT ontology survey papers in terms of a metasurvey comprising a threefold contribution: Firstly, addressing the survey landscape, we provide insight into commonalities and differences regarding the scope of eight survey papers and their rationale behind. Secondly, addressing the IoT ontology landscape, we analyze the IoT ontologies discussed in the survey papers on basis of quantitative and qualitative aspects. Thirdly, addressing the stateofresearch of ontologies for IoT, we identify commonalities and differences regarding conclusions and lessons learned of the survey papers.