K
Kai Puolamäki
Researcher at University of Helsinki
Publications - 131
Citations - 2616
Kai Puolamäki is an academic researcher from University of Helsinki. The author has contributed to research in topics: Supersymmetry & Exploratory data analysis. The author has an hindex of 26, co-authored 122 publications receiving 2259 citations. Previous affiliations of Kai Puolamäki include Helsinki Institute of Physics & Helsinki Institute for Information Technology.
Papers
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Journal Article
Precipitation and large herbivorous mammals II: application to fossil data
Jussi T. Eronen,Kai Puolamäki,Liping Liu,Kari Lintulaakso,John Damuth,Christine M. Janis,Mikael Fortelius +6 more
TL;DR: The early Miocene retained the overall humid conditions of the late Paleogene, while the late Miocene as a whole was a time of large changes, and there was continent-wide restructuring of the distribution of environments.
Journal Article
Precipitation and large herbivorous mammals I: estimates from present-day communities
Jussi T. Eronen,Kai Puolamäki,Liping Liu,Kari Lintulaakso,John Damuth,Christine M. Janis,Mikael Fortelius +6 more
TL;DR: The methods unravelled the complex relationships between the environment and the characteristics of mammalian communities and provide a reasonably accurate estimate of precipitation values for today’s world.
Journal ArticleDOI
A peek into the black box: exploring classifiers by randomization
TL;DR: An efficient iterative algorithm to find the attributes and dependencies used by any classifier when making predictions is proposed and the empirical investigation shows that the novel algorithm is indeed able to find groupings of interacting attributes exploited by the different classifiers.
Proceedings Article
Randomization Techniques for Graphs
TL;DR: This paper focuses on randomization techniques for unweighted undirected graphs for graph mining within the framework of statistical hypothesis testing, and describes three alternative algorithms based on local edge swapping and Metropolis sampling.
Journal ArticleDOI
Neogene aridification of the Northern Hemisphere
Jussi T. Eronen,Mikael Fortelius,Arne Micheels,Felix T. Portmann,Kai Puolamäki,Christine M. Janis +5 more
TL;DR: This article used community levels of hypsodonty to estimate precipitation during the Neogene (the past 23 Ma) and showed that aridification was more profound and occurred ∼5 Ma earlier in North America than in Eurasia.