Sökning: "clustering"

Visar resultat 16 - 20 av 971 uppsatser innehållade ordet clustering.

1. 16. A Multi-Variate Regression Analysis on Telecommunication Sites in a Sub-Saharan Country

   Kandidat-uppsats, KTH/Matematisk statistik

   Författare :Elza Berisha; Hampus Holma; [2023]
   Nyckelord :telecommunication; linear regression; segmentation; cluster analysis; telekommunikation; linjär regression; segmentering; klusteranalys;

   Sammanfattning : The purpose of this bachelor thesis is to investigate how different variables impact voice and data traffic for a telecom operator that operates in an undisclosed Sub-Saharan African country. The data has been provided by said company. LÄS MER

3. 17. Understanding the Robustnessof Self Supervised Representations

   Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för system- och rymdteknik

   Författare :Johan Rodahl Holmgren; [2023]
   Nyckelord :Self-Supervision; AI; Robustness; Computer-Vision;

   Sammanfattning : This work investigates the robustness of learned representations of self-supervised learn-ing approaches, focusing on distribution shifts in computer vision. Joint embedding architecture and method-based self-supervised learning approaches have shown advancesin learning representations in a label-free manner and efficient knowledge transfer towardreducing human annotation needs. LÄS MER

4. 18. Robust Statistical Jump Models with Feature Selection

   Master-uppsats, Lunds universitet/Matematisk statistik

   Författare :Jonatan Persson; [2023]
   Nyckelord :Clustering; Jump; Feature selection; Robust; Mathematics and Statistics;

   Sammanfattning : A large area in statistics and machine learning is cluster analysis. This field of research concerns the design of algorithms that allow computers to automatically categorize a set of observations into different groups in a reasonable way, without any prior information about which observations belongs to which group. LÄS MER

5. 19. Finding new members of the VelHel-4 stream

   Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)

   Författare :Lucas Johansson; [2023]
   Nyckelord :Galactic Archaeology; Milky Way; Stellar Streams; Streams; Stellar Halo; Stars; Globular Cluster; Astronomy; Astrophysics; Gaia; Chemical Abundance; Spectroscopy;

   Sammanfattning : According to the paradigm of lambda-CDM cosmology, the stellar halo ofour Galaxy has been built-up over time through the accretion of other galaxiesand star clusters. The remnants of some of these are still observable today asstellar streams, but are typically very faint and difficult to resolve amidst the farmore numerous foreground Milky Way stars. LÄS MER

7. 20. Domain Knowledge and Representation Learning for Centroid Initialization in Text Clustering with k-Means : An exploratory study

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :David Yu; [2023]
   Nyckelord :Natural language processing; Sentiment analysis; Clustering; Language model; Transformer; Heuristic; Språkteknologi; Sentimentanalys; Klustering; Språkmodell; Transformer; Heuristik;

   Sammanfattning : Text clustering is a problem where texts are partitioned into homogeneous clusters, such as partitioning them based on their sentiment value. Two techniques to address the problem are representation learning, in particular language representation models, and clustering algorithms. LÄS MER