18 592 774 książek w 174 językach
Jednak się nie przyda? Nic nie szkodzi! Możesz zwrócić produkty nawet do 30 dni
Bon prezentowy to zawsze dobry pomysł. Obdarowany może za bon prezentowy wybrać cokolwiek z naszej oferty.
Nawet do 30 dni na zwrot
High-dimensional data are everywhere: texts, sounds, spectra, images, etc. However, many data analysis tools (coming from statistics, artificial intelligence, etc.) were designed for low-dimensional data. Many of the assumptions behind data analysis tools are not transposable to high-dimensional data. For instance, the Euclidean distance concentrates in high-dimensional spaces; all distances seem identical! It furthermore does not distinguish between relenvant and irrelevant features. In Part One of the book, the phenomenon of the concentration of the distances is considered, and its consequences on data analysis tools are studied. Part Two focuses on the problem of feature selection in the case of a large number of initial features. Most of the concepts studied and presented in this thesis are illustrated on chemometric data, andmore particularly on spectral data, with the objective of inferringa physical or chemical property of a material by analysis the spectrum of the light it reflects.
Cześć! Jestem Libroamiko, Twój doradca książkowy.
Jak mogę Ci pomóc?