Sökning: "low-rank approximation"
Visar resultat 1 - 5 av 6 uppsatser innehållade orden low-rank approximation.
1. Randomized Diagonal Estimation
Master-uppsats, KTH/Matematik (Avd.)Sammanfattning : Implicit diagonal estimation is a long-standing problem that is concerned with approximating the diagonal of a matrix that can only be accessed through matrix-vector products. It is of interest in various fields of application, such as network science, material science and machine learning. LÄS MER
2. Generating Directed & Weighted Synthetic Graphs using Low-Rank Approximations
Master-uppsats, Linköpings universitet/Artificiell intelligens och integrerade datorsystemSammanfattning : Generative models for creating realistic synthetic graphs constitute a research area that is increasing in popularity, especially as the use of graph data is becoming increasingly common. Generating realistic synthetic graphs enables sharing of the information embedded in graphs without directly sharing the original graphs themselves. LÄS MER
3. Multi-Frequency Direction of Arrival Estimation by Low-Rank Approximation
Master-uppsats, Lunds universitet/Matematik LTHSammanfattning : We consider the problem of estimating the location of a number of wave-emitting sources, known as the direction of arrival problem. We consider both the two- and three-dimensional case. The method we use works for equally as well as unequally spaced sensors, that are located in (possibly) non-square regions. LÄS MER
4. Material Identification using Multiple X-Ray Absorptiometry
Master-uppsats, KTH/Numerisk analys, NASammanfattning : Dual Energy X-ray Absorptiometry is a proven technique used to identify unknown materials, by measuring the transmission of two X-ray energies. This technique is limited to measuring a single chemical quantity and is not able to handle more chemical variation. To overcome this, one approach is to use multiple-energies to resolve more information. LÄS MER
5. Analysis of 2 x 2 x 2 Tensors
Master-uppsats, Matematiska institutionenSammanfattning : The question about how to determine the rank of a tensor has been widely studied in the literature. However the analytical methods to compute the decomposition of tensors have not been so much developed even for low-rank tensors. LÄS MER