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Showing result 1 - 5 of 351 essays matching the above criteria.

  1. 1. Structural Comparison of Data Representations Obtained from Deep Learning Models

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Tommy Wallin; [2022]
    Keywords : Representation Learning; Deep learning models; Image Representations.; Representationsinlärning; Djupinlärningsmodeller; Bildrepresentationer;

    Abstract : In representation learning we are interested in how data is represented by different models. Representations from different models are often compared by training a new model on a downstream task using the representations and testing their performance. READ MORE

  2. 2. Semi-supervised Sentiment Analysis for Sentence Classification

    University essay from Uppsala universitet/Institutionen för lingvistik och filologi

    Author : Eirini Tsakiri; [2022]
    Keywords : sentiment analysis; text classification; semi-supervised learning; machine learning;

    Abstract : In our work, we deploy semi-supervised learning methods to perform Sentiment Analysis on a corpus of sentences, meant to be labeled as either happy, neutral, sad, or angry. Sentence-BERT is used to obtain high-dimensional embeddings for the sentences in the training and testing sets, on which three classification methods are applied: the K-Nearest Neighbors classifier (KNN), Label Propagation, and Label Spreading. READ MORE

  3. 3. Thermal transients study for the ESS target helium cooling system

    University essay from Lunds universitet/Institutionen för energivetenskaper

    Author : Hannes Björk; [2022]
    Keywords : ESS; European Spallation Source; models; Modelica; system identification; sensors; cooling system; Technology and Engineering;

    Abstract : The European Spallation Source (ESS) is going to be the worlds most powerful spallation source once in full operation. The neutrons used by scientists and engineers are spallated from a rotating wheel of wolfram, being bombarded by accellerated protons. READ MORE

  4. 4. Top - down control: parasitism and predation on Gonyostomum semen in Swedish brown water lakes

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Ingrid Bergman; [2022]
    Keywords : limnology; phytoplankton; top-down control;

    Abstract : Gonyostomum semen is a raphidophyte microalgae that can be found in brown water lakes all over Sweden. The species forms substantial summer blooms that can completely dominate the phytoplankton community, largely due to its limited grazing pressure. To test whether parasites control the abundance of G. READ MORE

  5. 5. Design and Construction of a Multi-Port Beamsplitter Based on Few-Mode-Fibers

    University essay from Linköpings universitet/Informationskodning

    Author : Daniel Spegel-Lexne; [2022]
    Keywords : beamsplitter; spatial modes; Space division multiplexing; superpositions; LP-modes; few-mode fibers; multi-mode interference; self-imaging; heterogeneous fiber structures; quantum communication; quantum optics;

    Abstract : A MBS (Multi-port beamsplitter) for higher dimensional quantum communication has been designed and constructed and the theory and method for this is presented in this thesis. It uses optical fibers in a heterogeneous structure with a single-mode fiber spliced to a multi-mode fiber and then spliced to a few-mode fiber. READ MORE