no code implementations • 10 Nov 2020 • Hanbaek Lyu, Georg Menz, Deanna Needell, Christopher Strohmeier
Online nonnegative matrix factorization (ONMF) is a matrix factorization technique in the online setting where data are acquired in a streaming fashion and the matrix factors are updated each time.
1 code implementation • 16 Sep 2020 • Hanbaek Lyu, Christopher Strohmeier, Deanna Needell
We prove that our algorithm converges almost surely to the set of stationary points of the objective function under the hypothesis that the sequence of data tensors is generated by an underlying Markov chain.
2 code implementations • 20 Apr 2020 • Hanbaek Lyu, Christopher Strohmeier, Georg Menz, Deanna Needell
One of the main sources of difficulty is that a very limited amount of daily COVID-19 case data is available, and with few exceptions, the majority of countries are currently in the "exponential spread stage," and thus there is scarce information available which would enable one to predict the phase transition between spread and containment.