41 citations · 93 across the 11 of their papers we have counts for
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stat.ML2012★ 41 cited
High quality topic extraction from business news explains abnormal financial market volatility
Ryohei Hisano, Didier Sornette, Takayuki Mizuno +2
Understanding the mutual relationships between information flows and social activity in society today is one of the cornerstones of the social sciences. In financial economics, the…
physics.soc-ph2012★ 4 cited
On the distribution of time-to-proof of mathematical conjectures
Ryohei Hisano, Didier Sornette
What is the productivity of Science? Can we measure an evolution of the production of mathematicians over history? Can we predict the waiting time till the proof of a challenging c…