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authorThibaut Horel <thibaut.horel@gmail.com>2012-11-03 14:42:42 +0100
committerThibaut Horel <thibaut.horel@gmail.com>2012-11-03 14:42:42 +0100
commitf64ff3ca389ec33c240bf6d872033a4bc6e4d9c6 (patch)
tree140986849d8c0d25ae5de9f3c8429cee8fccb125 /intro.tex
parent58c72935ed45da7f7dea0e28009219e5c5ba919c (diff)
downloadrecommendation-f64ff3ca389ec33c240bf6d872033a4bc6e4d9c6.tar.gz
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@@ -63,3 +63,6 @@ $O(\log n)$-competitive algorithm. In the bidding model $O(1)$-competitive
algorithm.
\stratis{What is known about the maximization of logdet in the non-strategic case? Is it NP hard? Approximation ratios?}
+\thibaut{Knapsack reduces to our problem in dimension 1, hence maximizing log
+det is NP-hard. The approximation ratio is at least (1-1/e) by applying the
+general approximation algorithm from Sviridenko \cite{sviridenko-submodular}.}