Titre : Contributions à la  gestion et à la fouille de données complexes : des données géographiques imprécises vers les Big Data

Lieu : salle du 6ème

Titre : Quantum Walks Gravity Simulation.
Place : Salle de réunion du 6e (TPR1, entrée G, 6e étage).

Titre : A Methodology to Build Run-Time Monitors for Enforcing Authorization Policies in Business Processes
Lieu : salle de réunion du 6ème étage du LIF

Massive graph data sets are pervasive in contemporary application domains.  Hence, graph database systems are becoming increasingly important.  In the study of these systems, it is vital that the research community has shared benchmarking solutions for the generation of database instances and query workloads having predictable and controllable properties.  Current graph benchmarks, however, are either limited to fixed graphs or graph schemas, or provide limited or no support for generating tailored query workloads to accompany graph instances.  To move the community forward, a benchmarking approach which overcomes these limitations is crucial.  

We present the design and engineering principles of gMark, a domain- and query language-independent graph benchmark exhibiting flexible schema and workload chokepoints.  A core contribution of gMark is its ability to target and control the diversity of properties of both the generated graph instances and the generated query workloads coupled to these instances.  A further novelty is the support of recursive regular path queries, a fundamental graph query paradigm.  We showcase gMark's capabilities in generating high quality graphs and workloads, and its practicality in encoding user-defined schemas across a variety of application domains.  This is joint work with Univ. Oxford, LIRIS CNRS, and Univ. Lille 3.

 

Titre : Autour de la connexité dans les graphes avec conflits.
Lieu : Salle de réunion du 5e (TPR1, entrée G, 5e étage).