Sökning: "dictionary learning"
Visar resultat 6 - 8 av 8 avhandlingar innehållade orden dictionary learning.
6. Essays on Asset Management : Analyst Ratings, Reports, and Return Expectations
Sammanfattning : “Mutual Fund Analysts as Information Intermediaries” studies mutual fund analyst reports in the context of active fund management models and how the reports’ informational content relates to fund flows and performance using dictionary-based and machine-learning approaches. “Are Subjective Expectations Formed as in Rational Expectations Models of Active Management?” examines forward-looking performance expectations of mutual fund analysts for global active equity funds. LÄS MER
7. Towards autonomous condition monitoring sensor systems
Sammanfattning : Rolling element bearings are used to carry load and reduce friction between moving parts in rotating machines, which play a central role in society and industry, for example in the transportation and energy sectors. It is essential to monitor and maintain the condition of bearings such that machines can operate efficiently and any failures resulting in unplanned stoppages are avoided. LÄS MER
8. Sparse Modeling of Harmonic Signals
Sammanfattning : This thesis considers sparse modeling and estimation of multi-pitch signals, i.e., signals whose frequency content can be described by superpositions of harmonic, or close-to-harmonic, structures, characterized by a set of fundamental frequencies. LÄS MER
