Sökning: "sentiment analysis"

Visar resultat 1 - 5 av 144 uppsatser innehållade orden sentiment analysis.

  1. 1. Data Segmentation Using NLP: Gender and Age

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Avdelningen för datalogi; Uppsala universitet/Avdelningen för datalogi

    Författare :Gustav Demmelmaier; Carl Westerberg; [2021]
    Nyckelord :Natural language processing; NLP; sentiment analysis; machine learning; demographics; demographic factors; gender; age; ethics;

    Sammanfattning : Natural language processing (NLP) opens the possibilities for a computer to read, decipher, and interpret human languages to eventually use it in ways that enable yet further understanding of the interaction and communication between the human and the computer. When appropriate data is available, NLP makes it possible to determine not only the sentiment information of a text but also information about the author behind an online post. LÄS MER

  2. 2. Evaluation of Approaches for Representation and Sentiment of Customer Reviews

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

    Författare :Stavros Giorgis; [2021]
    Nyckelord :machine learning; nlp; text analytics; sentiment analysis; transformers; tfidf; bow; fasttext; word2vec; bert; xlnet; roberta; maskininlärning; nlp; textanalys; sentimentanalys; transformatorer; tfidf; bow; fasttext; word2vec; bert; xlnet; roberta;

    Sammanfattning : Classification of sentiment on customer reviews is a real-world application for many companies that offer text analytics and opinion extraction on customer reviews on different domains such as consumer electronics, hotels, restaurants, and car rental agencies. Natural Language Processing’s latest progress has seen the development of many new state-of-the-art approaches for representing the meaning of sentences, phrases, and words in the text using vector space models, so-called embeddings. LÄS MER

  3. 3. Predicting the Movement Direction of OMXS30 Stock Index Using XGBoost and Sentiment Analysis

    Kandidat-uppsats, Blekinge Tekniska Högskola/Institutionen för datavetenskap

    Författare :Podasca Elena; [2021]
    Nyckelord :Machine learning; XGBoost; Sentiment analysis; Stock market prediction; OMXS30;

    Sammanfattning : Background. Stock market prediction is an active yet challenging research area. A lot of effort has been put in by both academia and practitioners to produce accurate stock market predictions models, in the attempt to maximize investment objectives. Tree-based ensemble machine learning methods such as XGBoost have proven successful in practice. LÄS MER

  4. 4. Shift in Opinion or Change of Expression Public Reaction on Twitter to Abortion Policy Changes

    Master-uppsats, Göteborgs universitet/Statsvetenskapliga institutionen

    Författare :Klara Lindahl; [2020-09-21]
    Nyckelord :;

    Sammanfattning : In 2019, nine US states voted on drastic policy changes to restrict access to abortion. Did the American population react to these policy changes, and if so how? Theory suggests that if the public disagrees with the policy changes, public opinion moves in the opposite direction of the policies. This is referred to as the Thermostat theory. LÄS MER

  5. 5. Mispricing in the Stock Market - an effect of investor sentiment?

    Kandidat-uppsats,

    Författare :Fanny Lundqvist; Roma Qadeer; [2020-07-01]
    Nyckelord :Behavioral Finance; mispricing; investor sentiment; anomaly; size strategy; value strategy;

    Sammanfattning : The purpose of this thesis is to investigate the relationship between mispricing and investor sentiment, on the Swedish and European stock markets. Firstly, it examines whether mispricing is more prominent in periods following high sentiment. LÄS MER