5 papers
Approximate Gradient Descent Convergence Dynamics for Adaptive Control on Heterogeneous Networks
Jean Carpentier, Sebastien Blandin
Adaptive control is a classical control method for complex cyber-physical systems, including transportation networks. In this work, we analyze the convergence properties of such me…
High-frequency crowd insights for public safety and congestion control
Karthik Nandakumar, Sebastien Blandin, Laura Wynter
We present results from several projects aimed at enabling the real-time understanding of crowds and their behaviour in the built environment. We make use of CCTV video cameras tha…
Robust commuter movement inference from connected mobile devices
Baoyang Song, Hasan Poonawala, Laura Wynter +1
The preponderance of connected devices provides unprecedented opportunities for fine-grained monitoring of the public infrastructure. However while classical models expect high qua…
A Probabilistic Model of the Bitcoin Blockchain
Marc Jourdan, Sebastien Blandin, Laura Wynter +1
The Bitcoin transaction graph is a public data structure organized as transactions between addresses, each associated with a logical entity. In this work, we introduce a complete p…
Characterizing Entities in the Bitcoin Blockchain
Marc Jourdan, Sebastien Blandin, Laura Wynter +1
Bitcoin has created a new exchange paradigm within which financial transactions can be trusted without an intermediary. This premise of a free decentralized transactional network h…