Spini, FedericoSportillo, MarcoVirgadamo, MarcoMarino, EnricoBottaro, AntonioPaoluzzi, AlbertoAndrea Giachetti and Silvia Biasotti and Marco Tarini2015-10-142015-10-142015978-3-905674-97-2https://doi.org/10.2312/stag.20151290This paper introduces HIJSON, a novel indoor cartographic document format with several enhancements. The document is generated using LAR (Linear Algebraic Representation), so allowing for cellular complexes with general topology and shape. A software framework FIVE is also presented, that relies on HIJSON documents and is entirely based on web technologies. With respect to current cartographic formats, HIJSON suggests four major enhancements: (a) exposes a hierarchical structure; (b) uses local metric coordinate systems; (c) may import external geometric models; (d) accepts semantic extensions. The semantic extensions supported by the FIVE framework architecture encapsulate the details about communication protocols, rendering style, and exchanged and displayed information, allowing the HIJSON format to be extended with any sort of models of objects, sensors or behaviors.10.2312/stag.2015129035-46