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(Doctoral thesis / Doktoravhandling, 2022)
Financial markets have extremely complex behavior that cannot be fully modeled using classical approaches. In particular, numerous empirical studies show that market volatility exhibits some form of long-range dependence ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
(Research report / Forskningsrapport, 1980)
(Master thesis / Masteroppgave, 2015)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
System logs or log files containing textual messages with associated time stamps are generated by many technologies and systems. The clustering technique proposed in this paper provides a tool to discover and identify ...
(Doctoral thesis / Doktoravhandling, 2021)
In our modern society, with the bourgeoning of e-commerce and online streaming platforms, customers are overwhelmed by the choices. One important approach to solve this problem is recommender systems. Recommender systems ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
A sharp version of a recent inequality of Kovalev and Yang on the ratio of the (H1)∗ and H4 norms for certain polynomials is obtained. The inequality is applied to establish a sharp and tractable sufficient condition for ...
(Research report / Forskningsrapport, 1973)
(Research report / Forskningsrapport, 1979)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Given a quasi-lattice ordered group (G, P) and a compactly aligned product system X of essential C∗-correspondences over the monoid P, we show that there is a bijection between the gauge-invariant KMSβ-states on the ...