Essays about: "random number"

Showing result 1 - 5 of 426 essays containing the words random number.

1. 1. Station-level demand prediction in bike-sharing systems through machine learning and deep learning methods

   University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

   Author : Nikolaos Staikos; [2024]
   Keywords : Physical Geography; Ecosystem Analysis; Bike-sharing demand; Machine learning; Deep learning; Spatial regression; Graph Convolutional Neural Network; Multiple Linear Regression; Multilayer Perceptron Regressor; Support Vector Machine; Random Forest Regressor; Urban environment; Micro-mobility; Station planning; Geomatics; Earth and Environmental Sciences;

   Abstract : Public Bike-Sharing systems have been employed in many cities around the globe. Shared bikes are an efficient and convenient means of transportation in advanced societies. Nonetheless, station planning and local bike-sharing network effectiveness can be challenging. READ MORE

3. 2. Attack Strategies in Federated Learning for Regression Models : A Comparative Analysis with Classification Models

   University essay from Umeå universitet/Institutionen för datavetenskap

   Author : Sofia Leksell; [2024]
   Keywords : Federated Learning; Adversarial Attacks; Regression; Classification;

   Abstract : Federated Learning (FL) has emerged as a promising approach for decentralized model training across multiple devices, while still preserving data privacy. Previous research has predominantly concentrated on classification tasks in FL settings, leaving  a noticeable gap in FL research specifically for regression models. READ MORE

4. 3. Exploring the Impact of Pseudo and Quasi Random Number Generators on Monte Carlo Integration of the Multivariate Normal Distribution

   University essay from Lunds universitet/Statistiska institutionen

   Author : Marcus Stolz; Jonathan Christopher; [2024]
   Keywords : Monte Carlo integration; Quasi monte carlo integration; Random number generation; Mathematics and Statistics;

   Abstract : This thesis examines the effects of pseudo and quasi-random number generators on the accuracy and efficiency of Monte Carlo Integration in the case of the multivariate normal distribution. The study compares the performance of the Mersenne Twister (a pseudo-random number generator) with Sobol and Halton sequences (quasi-random number generators). READ MORE

5. 4. Detecting Fraudulent User Behaviour : A Study of User Behaviour and Machine Learning in Fraud Detection

   University essay from Uppsala universitet/Analys och partiella differentialekvationer

   Author : Patrik Gerdelius; Sjönneby Hugo; [2024]
   Keywords : Fraud Detection; User Behaviour; Random Forest; PCA; SMOTE;

   Abstract : This study aims to create a Machine Learning model and investigate its performance of detecting fraudulent user behaviour on an e-commerce platform. The user data was analysed to identify and extract critical features distinguishing regular users from fraudulent users. READ MORE

6. 5. Comparison of VADER and Pre-Trained RoBERTa: A Sentiment Analysis Application

   University essay from Lunds universitet/Statistiska institutionen

   Author : Linda Erwe; Xin Wang; [2024]
   Keywords : sentiment analysis; natural language processing; BERT; VADER; sustainability report; Mathematics and Statistics;

   Abstract : Purpose: The purpose of this study is to examine how the overall sentiment results from VADER and a pre-trained RoBERTa model differ. The study investigates potential differences in terms of the median and shape of the two distributions. Data: The sustainability reports of 50 independent random companies are selected as the sample. READ MORE