Essays about: "Text mining"

Showing result 1 - 5 of 69 essays containing the words Text mining.

  1. 1. Text mining Twitter social media for Covid-19 : Comparing latent semantic analysis and latent Dirichlet allocation

    University essay from Högskolan i Gävle/Avdelningen för datavetenskap och samhällsbyggnad

    Author : Hassan Sheikha; [2020]
    Keywords : Data mining; Text mining; artificial intelligence; Natural language processing; Latent Semantic Analysis; Latent Dirichlet Allocation; KMeans; HDBSCAN; Dimension reduction;

    Abstract : In this thesis, the Twitter social media is data mined for information about the covid-19 outbreak during the month of March, starting from the 3’rd and ending on the 31’st. 100,000 tweets were collected from Harvard’s opensource data and recreated using Hydrate. READ MORE

  2. 2. Preprocessing method comparison and model tuning for natural language data

    University essay from Högskolan Dalarna/Mikrodataanalys

    Author : Peter Tempfli; [2020]
    Keywords : Natural language processing; sentiment analysis; machine learning;

    Abstract : Twitter and other microblogging services are a valuable source for almost real-time marketing, public opinion and brand-related consumer information mining. As such, collection and analysis of user-generated natural language content is in the focus of research regarding automated sentiment analysis. READ MORE

  3. 3. Impacts of peer-to-peer rental accommodation in Stockholm, Barcelona and Rio de Janeiro : An exploratory analysis of Airbnb’s data

    University essay from KTH/Maskinkonstruktion (Inst.)

    Author : Irene Suárez Pacios; [2020]
    Keywords : Airbnb; peer-to-peer economy; shared economy; exploratory analysis; text mining; Airbnb; peer-to-peer-ekonomi; delad ekonomi; undersökande analys; textutvinning;

    Abstract : As a part of the growing movement called the “peer-to-peer” economy, Airbnb has changed the short-stay rental market and has become one of the world’s largest booking websites for finding an accommodation to stay. The platform has also affected the economy of tourism around the world, so, given the importance of the subject, in this thesis study, the impacts that the Airbnb rental accommodation model has on clients of Stockholm, Barcelona and Rio de Janeiro is studied. READ MORE

  4. 4. An Approach to Extending Ontologies in the Nanomaterials Domain

    University essay from Linköpings universitet/Institutionen för datavetenskap

    Author : Olumide Leshi; [2020]
    Keywords : Ontology; Nanomaterials; Concept Discovery; Formal Concept Analysis FCA ; Topic Modelling; Association Rule Mining ARM ; Duquenne-Guigues;

    Abstract : As recently as the last decade or two, data-driven science workflows have become increasingly popular and semantic technology has been relied on to help align often parallel research efforts in the different domains and foster interoperability and data sharing. However, a key challenge is the size of the data and the pace at which it is being generated, so much that manual procedures lag behind. READ MORE

  5. 5. A Rule-Based Normalization System for Greek Noisy User-Generated Text

    University essay from Uppsala universitet/Institutionen för lingvistik och filologi

    Author : Marsida Toska; [2020]
    Keywords : nlp; noisy text preprocessing; rule-based; levenshtein; twitter; normalization; Greek;

    Abstract : The ever-growing usage of social media platforms generates daily vast amounts of textual data which could potentially serve as a great source of information. Therefore, mining user-generated data for commercial, academic, or other purposes has already attracted the interest of the research community. READ MORE