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May 2018 MMonday TTuesday WWednesday TThursday FFriday SSaturday SSunday 30 1 2 3 4 A data structure for analyzing spatiotemporal correlations of alarms, by Anne Bouillard (Nokia)
A data structure for analyzing spatiotemporal correlations of alarms, by Anne Bouillard (Nokia)May 4, 2018 –
Bâtiment IMAG (206)SaintMartind'Hères, 38400FranceIn this talk, I will present a data structure for the analysis of correlations of alarms, for rootcause analysis or prediction purposes. This is a joint work with MarcOlivier Buob and Maxime Raynal (intern). A sequence of alarms is modeled by a directed acyclic graph. The nodes of the graph are the alarms, that are represented by a symbol and an interval of time. An arc of the graph is interpreted as a potential causality between two alarms. I will first show how to build a "compact" structure storing all the potential causal sequences of alarms and then how to weight this structure so that the actual correlations can be detected. The efficiency of the approach will be demonstrated on toy examples.
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Minimization of Circuit Registers: Retiming Revisted, by Bruno Gaujal (Polaris).
Minimization of Circuit Registers: Retiming Revisted, by Bruno Gaujal (Polaris).May 24, 2018 N/A
Given a digital circuit (made of logical gates and registers), is it possible to construct a new circuit computing the same function but using less registers?
We show that the minimal number of registers is the size of a minimal cut in a periodic infinite graph corresponding to an unfolding of the initial circuit.
We also show when it coincides with the retiming technique introduced by Leiserson and Saxe and when it outperforms optimal retiming.25 26 27 28 29 30 31 George Arvanitakis (Polaris)
George Arvanitakis (Polaris)1 2 3 Next events
 2:00 pm – 3:00 pm, May 31, 2018 – George Arvanitakis (Polaris)
 2:00 pm – 3:00 pm, June 7, 2018 – Seminaire Yves Robert
 2:00 pm – 3:00 pm, June 21, 2018 – Franck Iutzeler
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