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IoT assures numerous applications in everyday life of common people, government bodies, business, and society as a whole. Collaboration among the devices in IoT to bring various applications in the real world is a challenging task. In this context, we introduce an application\u2010based two\u2010layer architectural framework for IoT which consists of sensing layer and IoT layer. For any real\u2010time application, sensing devices play an important role. Both these layers are required for accomplishing IoT\u2010based applications. The success of any IoT\u2010based application relies on efficient communication and utilization of the devices and data acquired by the devices at both layers. The grouping of these devices helps to achieve the same, which leads to formation of cluster of devices at various levels. The clustering helps not only in collaboration but also in prolonging overall network lifetime. In this paper, we propose two clustering algorithms based on heuristic and graph, respectively. The proposed clustering approaches are evaluated on IoT platform using standard parameters and compared with different approaches reported in literature.<\/jats:p>","DOI":"10.1155\/2018\/8739203","type":"journal-article","created":{"date-parts":[[2018,4,19]],"date-time":"2018-04-19T23:32:20Z","timestamp":1524180740000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":28,"title":["Clustering Approaches for Pragmatic Two\u2010Layer IoT Architecture"],"prefix":"10.1155","volume":"2018","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4736-1466","authenticated-orcid":false,"given":"J. 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