Space is a matter of distance between social objects. The following article is based on the "agencement" concept seen as a framework to formalize new projects territories. The area of research is PARIS-SACLAY Campus, which views the sitting of a world science cluster. The agencements are modelized by means of mereology and simplicial complexes. Its objective is to offer new decision-making tools to urban actors.

Legal ontologies design raises knowledge management but also jurisprudence issues. To which extent is it possible to establish common concerns between technical means and theoretical constraints? After a brief presentation of the network methodology, we give two convergent results of our working groups on the feasibility of legal ontologies. First, the definition of a meta legal language handling fundamentals (acts, actors, conditions…) contributes to a shared understanding of legal knowledge between disciplines and jurisdictions. Second, ontological alignment concerns not only knowledge management but is also the core of the judge's activity.

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The current approaches aiming at collective intelligence modelling often rely on traditional methods (ontologies, graphs). Even if those traditional methods may have reached their limitations, fin front of demanding emerging practices. The major conceptual tools enrolled for current and future Web are deeply rooted in the information storage and retrieval practices. The focus is on developing more original technologies for capturing, analyzing, exploiting and visualizing data. The agencements and the arrangements provide the appropriate epistemological context of our contribution. The simplicial complexes are the mathematical support of the methodology. The result is a shift from networks studied towards graph theory to higher dimensional networks structures. The representation is more than graphs, or even hypergraphs. A geometric perspective shows the arrangement as assembling polyhedra of all sizes. Their contacts can form chains of adjacencies. It not only generalized the notion of path graphs but also made available a range of quantitative and qualitative tools on the structure. Thus, the separate parts, more or less strongly linked, and the length of paths to traverse, and even loops or "missing parts", are meaningful metadata representations.

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