Sökning: "huvudkomponentanalys"

Hittade 4 uppsatser innehållade ordet huvudkomponentanalys.

  1. 1. Application of data-driven models in exploring cyanobacterial bloom risks in Lake Mälaren

    Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

    Författare :Abigail Huertas Herrera; [2021]
    Nyckelord :Random Forest; blue-green algae; WHO Alert Level Framework; drinking water supply; cyanobacterial blooms;

    Sammanfattning : Cyanobacteria are a unique organism, a bacterium that develop photosynthesis, thus it contains chlorophyll, a pigment commonly associated to algae. For this reason, cyanobacteria are also known as blue-green algae. One of the secondary metabolites of cyanobacteria is cyanotoxin, a substance which is hepatoxic, neurotoxic, and dermatoxic. LÄS MER

  3. 2. Daily pattern recognition of dynamic origin-destination matrices using clustering and kernel principal component analysis

    Master-uppsats, KTH/Transportplanering

    Författare :Zhiwu Dong; [2021]
    Nyckelord :origin-destination; pattern recognition; principal component analysis; kernel principal component analysis; k-means cluster; ursprung-destination; mönsterigenkänning; huvudkomponentanalys; analys av kärnhuvudkomponent; k-medelkluster;

    Sammanfattning : Origin-Destination (OD) matrix plays an important role in traffic management and urban planning. However, the OD estimation demands large data collection which has been done in past mostly by surveys with numerous limitations. LÄS MER

  4. 3. Informational attributes behind consumer payment habits and settlement preference

    Master-uppsats, KTH/Fastigheter och byggande

    Författare :Alexander Tchibaline; David Mårtensson; [2018]
    Nyckelord :Cash; Cashless; Society; Finance; Behavioural economics; Big Data; SPSS; Multivariate analysis; Principal component analysis; Informational attributes; Kontanter; Kontantlösa samhället; Samhället; Finans; Beteendeekonomi; Big Data; SPSS; Multivariatanalys; Huvudkomponentanalys; Informativa attribut;

    Sammanfattning : Sweden is known for being at the forefront of becoming a cashless society.However, cash continues to be an important part of the payment ecosystem butthere are limited studies and data regarding the preference for holding cash. LÄS MER

  5. 4. Fluorescence probes: towards automatic coagulant dosing

    Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

    Författare :Daphné Lecellier; [2018]
    Nyckelord :Drinking water quality; Water treatment process; Coagulation; Microcystis aerugosa; algal organic matter; LC-OCD; EEM; powdered activated carbon; Alum;

    Sammanfattning : There is a current lack of accurate tools to determine the concentration of cyanobacteria in situ.  Besides, cyanobacterial blooms have to be carefully monitored in reservoirs as they are more frequent because of climate change and can lead to potential released of toxins, along with other components. LÄS MER