منابع مشابه
Provable Dynamic Robust PCA or Robust Subspace Tracking
Dynamic robust PCA refers to the dynamic (time-varying) extension of the robust PCA (RPCA) problem. It assumes that the true (uncorrupted) data lies in a low-dimensional subspace that can change with time, albeit slowly. The goal is to track this changing subspace over time in the presence of sparse outliers. This work provides the first guarantee for dynamic RPCA that holds under weakened vers...
متن کاملIncremental PCA or On-Line Visual Learning and Recognition
The methods for visual learning that compute a space of eigenvectors by Principal Component Analysis (PCA) traditionally require a batch computation step. Since this leads to potential problems when dealing with large sets of images, several incremental methods for the computation of the eigenvectors have been introduced. However, such learning cannot be considered as an on-line process, since ...
متن کاملIs Multinomial PCA Multi-faceted Clustering or Dimensionality Reduction?
Discrete analogues to Principal Components Analysis (PCA) are intended to handle discrete or positive-only data, for instance sets of documents. The class of methods is appropriately called multinomial PCA because it replaces the Gaussian in the probabilistic formulation of PCA with a multinomial. Experiments to date, however, have been on small data sets, for instance, from early information r...
متن کاملOptical Properties of (PVA-PAA-Ag) Nanocomposites
In this paper, the effect of silver nanoparticles on optical properties of (PVA-PAA) nanocomposites has been investigated. The silver nanoparticles were added to the polymers (polyvinyl alcohol 80 wt.% and poly-acrylic acid 20 wr.%) with weight percentages of (0, 2, 4, 6) wt.%. The optical properties of nanocomposites were measured in the wavelength range (200-800) nm. The experimental results ...
متن کاملComparison of patient-controlled analgesia (PCA) with tramadol or morphine.
PURPOSE To compared the clinical efficacy of tramadol and morphine using a patient-controlled analgesia (PCA) delivery system. METHODS In a prospective, randomized, double blind study, we evaluated 80 adult patients scheduled for elective hip or knee arthroplasty with general inhalational anesthesia. When patients complained of pain in the recovery room, patients were randomized to receive ei...
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ژورنال
عنوان ژورنال: British Journal of Anaesthesia
سال: 1990
ISSN: 0007-0912
DOI: 10.1093/bja/64.5.651