Sökning: "static measurements"

Visar resultat 1 - 5 av 172 uppsatser innehållade orden static measurements.

  1. 1. Customer churn prediction in a slow fashion e-commerce context : An analysis of the effect of static data in customer churn prediction

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

    Författare :Luca Colasanti; [2023]
    Nyckelord :Survival Analysis; Time To Event prediction; Churn retention; Machine Learning; Deep Learning; Customer Clustering; E-commerce; Analisi di sopravvivenza; Previsione del tempo a evento; Ritenzione dall’abbandono dei clienti; Apprendimento automatico; Apprendimento profondo; Segmentazione della clientela; Commercio elettronico; Överlevnadsanalys; Tid till händelseförutsägelse; Churn Prediction; Maskininlärning; Djuplärning; Kundkluster; E-handel;

    Sammanfattning : Survival analysis is a subfield of statistics where the goal is to analyse and model the data where the outcome is the time until the occurrence of an event of interest. Because of the intrinsic temporal nature of the analysis, the employment of more recently developed sequential models (Recurrent Neural Network (RNN) and Long Short Term Memory (LSTM)) has been paired with the use of dynamic temporal features, in contrast with the past reliance on static ones. LÄS MER

  3. 2. Assisted GNSS Positioning using State Space Corrections

    Master-uppsats, Linköpings universitet/Institutionen för systemteknik

    Författare :Oskar Philipsson; [2023]
    Nyckelord :positioning; GNSS; SSR; EKF; sensor fusion;

    Sammanfattning : Classical GNSS based positioning has accuracy limitations due to many sources oferror. The error sources range from clock errors and orbit errors toerrors due to variations in atmospheric propagation delays. One way to improve GNSSpositioning is to generate real time corrections using a GNSS reference network. LÄS MER

  4. 3. Dynamic Warning Signals and Time Lag Analysis for Seepage Prediction in Hydropower Dams : A Case Study of a Swedish Hydropower Plant

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Datalogi

    Författare :Lovisa Olsson; Julia Hellström; [2023]
    Nyckelord :hydropower; dam safety; dam monitoring; seepage; prediction models; data-driven methods; artificial intelligence; AI;  linear regression; Support Vector Regression; SVR; Long Short-Term Memory; LSTM;

    Sammanfattning : Hydropower is an important energy source since it is fossil-free, renewable, and controllable. Characteristics that become especially important as the reliance on intermittent energy sources increases. However, the dams for the hydropower plants are also associated with large risks as a dam failure could have fatal consequences. LÄS MER

  5. 4. Static Extrinsic Calibration of a Vehicle-Mounted Lidar Using Spherical Targets

    Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Institutionen för fysik

    Författare :Philip Sandström; [2023]
    Nyckelord :;

    Sammanfattning : Self-driving cars are steadily becoming a reality by a growing number of driver assistance functions enabled by smart perception sensors. The light detection and ranging (lidar) sensor show great potential for perception tasks due to its precise distance measurements. LÄS MER

  7. 5. Etablering av ett nytt stomnät i plan vid Högskolan i Gävle

    Uppsats för yrkesexamina på grundnivå, Högskolan i Gävle/Samhällsbyggnad

    Författare :Freja Lag; Sanna Pålsson; [2023]
    Nyckelord :Geodetic control network; static GNSS; total station; Stomnät; statisk GNSS; totalstation;

    Sammanfattning : Högskolan i Gävle har en mängd av utbildningar som har anknytning till geodetisk mätning. Sedan tidigare finns det en uppsättning lägesbestämda punkter i Högskoleområdet som används inom dessa utbildningar där mätning förekommer. LÄS MER