Essays about: "data preprocessing thesis"

Showing result 16 - 20 of 118 essays containing the words data preprocessing thesis.

1. 16. Text Curation for Clustering of Free-text Survey Responses

   University essay from Linköpings universitet/Institutionen för datavetenskap

   Author : Anton Gefvert; [2023]
   Keywords : Natural Language Processing; NLP; Sentence Representations; Sentence Representation Models; Survey; Surveys; Clustring;

   Abstract : When issuing surveys, having the option for free-text answer fields is only feasible where the number of respondents is small, as the work to summarize the answers becomes unmanageable with a large number of responses. Using NLP techniques to cluster these answers and summarize them would allow a greater range of survey creators to incorporate free-text answers in their survey, without making their workload too large. READ MORE

3. 17. Unsupervised Anomaly Detection in Multivariate Time Series Using Variational Autoencoders

   University essay from Lunds universitet/Matematik LTH

   Author : Elias Aronsson; [2023]
   Keywords : Anomaly Detection; Variational Autoencoder VAE ; Unsupervised Learning; Machine learning; AI; Technology and Engineering;

   Abstract : In this master’s thesis, a novel unsupervised anomaly detection tool was developed in collaboration with Sandvik Rock Processing to assist engineers and experts in analyzing large amounts of sensor data from cone crushers used in the stone crushing industry. The tool focuses on analyzing power, pressure, and CSS sensor data. READ MORE

4. 18. Motor Imagery Signal Classification using Adversarial Learning - A Systematic Literature Review

   University essay from Stockholms universitet/Institutionen för data- och systemvetenskap

   Author : Osama Mahmudi; Shubhra Mishra; [2023]
   Keywords : Adversarial Learning; Motor Imagery; BCI; EEG; Machine Learning;

   Abstract : Context: Motor Imagery (MI) signal classification is a crucial task for developing Brain-Computer Interfaces (BCIs) that allow people to control devices using their thoughts. However, traditional machine learning approaches often suffer from limited performance due to inter-subject variability and limited data availability. READ MORE

5. 19. Automatic object detection and tracking for eye-tracking analysis

   University essay from Uppsala universitet/Avdelningen för systemteknik

   Author : Liv Cederin; Ulrika Bremberg; [2023]
   Keywords : Computer Vision; Object Detection; Object Tracking; Eye-Tracking; Annotation; Deblurring; Deep Learning; Motion Blur;

   Abstract : In recent years, eye-tracking technology has gained considerable attention, facilitating analysis of gaze behavior and human visual attention. However, eye-tracking analysis often requires manual annotation on the objects being gazed upon, making quantitative data analysis a difficult and time-consuming process. READ MORE

6. 20. Detection of software incidents from large log material with the use of unsupervised machine learning

   University essay from Göteborgs universitet/Institutionen för data- och informationsteknik

   Author : DIMITRIOS ANASTASIADIS; JAKUB LENART; [2022-06-20]
   Keywords : binary classification; log; anomaly detection; machine learning; Local Outlier Factor; Isolation Forest; PCA; LSTM-Autoencoder;

   Abstract : Computer systems generate log files, which contain information on the various operations performed by these systems. This information can support the process of error/failure detection and debugging. Therefore, anomalies can be spotted in the system through its produced log material. READ MORE