Sökning: "Stable rank"

Visar resultat 1 - 5 av 21 uppsatser innehållade orden Stable rank.

1. 1. Unauthorised Session Detection with RNN-LSTM Models and Topological Data Analysis

   Master-uppsats, KTH/Matematik (Avd.)

   Författare :Nazar Maksymchuk Netterström; [2023]
   Nyckelord :Recurrent Neural Network; Long-Short-Term-Memory; Topological Data Analysis; Session based data; Anomaly detection; Time-series analysis; Imbalanced data; Master thesis; Neurala nätverk; Topologisk data analys; Detektion av avvikelse; Sessionsbaserad data; Tidserieanalys; Inbalancerad data; Masteruppsats;

   Sammanfattning : This thesis explores the possibility of using session-based customers data from Svenska Handelsbanken AB to detect fraudulent sessions. Tools within Topological Data Analysis are employed to analyse customers behavior and examine topological properties such as homology and stable rank at the individual level. LÄS MER

3. 2. Exploring persistent homology as a method for capturing functional connectivity differences in Parkinson’s Disease.

   Master-uppsats, KTH/Matematik (Avd.)

   Författare :Naomi Hulst; [2022]
   Nyckelord :persistent homology; topological data analysis; computational topology; parkinson s disease; parkinson; functional connectivity; stable rank; ihållande homologi; topologisk data analys; beräknings topologi; Parkinsons sjukdom; parkinson; funktionell konnektivitet; stable ranks;

   Sammanfattning : Parkinson’s Disease (PD) is the fastest growing neurodegenerative disease, currently affecting two to three percent of the population over 65. Studying functional connectivity (FC) in PD patients may provide new insights into how the disease alters brain organization in different subjects. LÄS MER

4. 3. Linear-scaling Quantum Molecular Dynamics for Reactive Systems

   Master-uppsats, Uppsala universitet/Institutionen för informationsteknologi

   Författare :Linnéa Andersson; [2021]
   Nyckelord :;

   Sammanfattning : The purpose of this thesis is to demonstrate linear-scaling, energy stable, propagation of the electronic degrees of freedom in finite temperature ExtendedLagrangian Born-Oppenheimer Molecular Dynamics for reactive systems in aself-consistent charge density-functional tight-binding formulation. The inverse Jacobian kernel matrix in the electronic equation of motion is approximated using alow-rank combination of directional derivatives of the ground state residual function. LÄS MER

5. 4. Development of a high-throughput platform for generation and early screening of high producing stable cell lines

   Master-uppsats, KTH/Proteinvetenskap

   Författare :Jonathan Karlsson Persson; [2021]
   Nyckelord :CHO-K1; HEK293; CellCelector™; High-throughput screening; Protein A beads; Secondary antibody; CHO-K1; HEK293; CellCelector™; Högkapacitets-screening; Protein A-kulor; Sekundär antikropp;

   Sammanfattning : Produktionen av rekombinanta biofarmaceutiska läkemedel, exempelvis monoklonala antikroppar, är en oumbärlig men ansträngande process. Under 2019 var sju av de tio mest sålda läkemedlen globalt baserade på rekombinant producerade monoklonala antikroppar. LÄS MER

7. 5. Interference Aware Distributed Network Formation with Reinforcement Learning

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

   Författare :Berkcan Okur; [2021]
   Nyckelord :distributed; network formation; topology formation; reinforcement learning; multi-agent; distribuerad; nätverksbildning; topologibildning; förstärkande inlärning; multiagent;

   Sammanfattning : Ad-hoc networks suffer from dynamicity due to mobility of the nodes or node addition/removal to/from the system. This means, the formed topology may not be connected anymore or better topologies can be found as time passes if the position of the nodes changes or some nodes in the network is broken. LÄS MER