Sökning: "Inverse model"

Visar resultat 16 - 20 av 214 uppsatser innehållade orden Inverse model.

  1. 16. Parameter Stability in Additive Normal Tempered Stable Processes for Equity Derivatives

    Master-uppsats, Mälardalens universitet/Akademin för utbildning, kultur och kommunikation

    Författare :Eduardo Alberto Alcantara Martinez; [2023]
    Nyckelord :Parameter Stability; Lévy Processes; Calibration; Volatility Surface; Subordination; Additive Normal Tempered Stable Processes; Stable Distribution; Variance Gamma Process; Normal Inverse Gaussian Process.;

    Sammanfattning : This thesis focuses on the parameter stability of additive normal tempered stable processes when calibrating a volatility surface. The studied processes arise as a generalization of Lévy normal tempered stable processes, and their main characteristic are their time-dependent parameters. LÄS MER

  3. 17. Design, Modeling, and Testing of a Force Feedback Haptic Device for Simulated Robot Interaction

    Master-uppsats, Linköpings universitet/Institutionen för systemteknik

    Författare :Patrik Lindström; [2023]
    Nyckelord :Force Feedback; Impedance Control; PD-gain; Dynamic Behavior; Closed-chain; Master-Slave; Parallel Manipulator; Kinematics Redundancy; Mass-Spring-Damper; Position Control; Current Control; Modeling; Design; Joints; Delta robot; Differential Equations; External Torques; Kinematics; Forward Kinematics; Inverse Kinematics; Dynamic Matrices; Jacobian; URDF; Haptics; Haptic Device; Solidworks; CAD; Maxon Motors; EtherCAT; Beckhoff;

    Sammanfattning : Haptic feedback is a growing phenomenon that incorporates the sense of touch through tactile sensations such as vibrations, electrical signals, air pressure, and sound waves or through force feedback, which employs torques and/or forces to replicate the pressure and weight of a simulated object. Utilizing haptic technology establishes a communication bridge between the user and the technical component, enhancing the user's understanding of the technical component's surroundings. LÄS MER

  4. 18. Self-Supervised Fine-Tuning of sentence embedding models using a Smooth Inverse Frequency model : Automatic creation of labels with Smooth Inverse Frequency model

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

    Författare :Vittorio Pellegrini; [2023]
    Nyckelord :Natural Language Processing; sentence embeddings; Transformer-based architectures; sentence paraphrasing; sentence similarity; sentence clustering; Naturlig språkbehandling; inbäddning av meningar; transformatorbaserade arkitekturer; parafrasering av meningar; meningslikhet; klustring av meningar Canvas Lärplattform; Dockerbehållare; Prestandajustering;

    Sammanfattning : Sentence embedding models play a key role in the field of Natural Language Processing. They can be exploited for the resolution of several tasks like sentence paraphrasing, sentence similarity, and sentence clustering. LÄS MER

  5. 19. Improving the understanding of photoelectron currents on Solar Orbiter : Utilizing theory and empirical measurements

    Kandidat-uppsats, Uppsala universitet/Institutet för rymdfysik, Uppsalaavdelningen

    Författare :Melker Marminge; [2023]
    Nyckelord :Solar Orbiter; Photoelectric Currents; Photoelectric Effect; Thermal Bending; Outgassing; Thermionic Emission; Numerical Approximation; Physical Modeling;

    Sammanfattning : Spacecraft experience electric currents on conductive materials exposed to sunlight, which introduces noise in scientific data. These currents are mainly due to the photoelectric effect and should therefore be proportional to the inverse square heliocentric distance. LÄS MER

  7. 20. A Correlation Study on the Relationship between Credit Default Swap (CDS) Spreads and ESG Sentiment in the Banking Sector

    Magister-uppsats, Lunds universitet/Nationalekonomiska institutionen

    Författare :Mattias Olsson; Shabier Stanakzai; [2023]
    Nyckelord :ESG; Sentiment; CDS spreads.; Business and Economics;

    Sammanfattning : This study examines the influence of online ESG sentiment on credit market price movement in the banking sector. By employing a panel regression model with fixed effect for firms and time, the study’s findings indicate an inverse relationship between online ESG sentiment and CDS spread in accordance, to some extent, with previous literature. LÄS MER