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Listar por palabra clave "Topic modelling"

Mostrando ítems 1-5 de 5

AI applied to knowledge graphs: NLP as a mean to enhance the graph

Llopis Beltrán, Iván (Universitat Politècnica de València, 2020-05-19)

[EN] This Master’s thesis attempts to solve the problem of document relation modelling. Normally, documents are classified by tags. However, rare is the case where document relations are tagged in the database. The study ...
Communicating Corporate Social Responsibility through Twitter: a topic model analysis on selected companies

Salvatore, Camilla; Bianchi, Annamaria; Biffignandi, Silvia (Editorial Universitat Politècnica de València, 2020-06-30)

[EN] Social media are fundamental in creating new opportunities for firms and they represent a relevant tool for the communication and the engagement with customers. The purpose of this paper is to analyse the communication ...
Exploring expert opinion on climate policy using Twitter

Bergamini, Enrico; Savin, Ivan; van den Bergh, Jeroen (Editorial Universitat Politècnica de València, 2023-09-22)

[EN] We study online conversations about climate policy by building a novel dataset of around 100,000 tweets and tweet threads by climate policy scientists. This data is complemented with information about the scientific ...
Mining News Data for the Measurement and Prediction of Inflation Expectations

Gabrielyan, Diana; Masso, Jaan; Uusküla, Lenno (Editorial Universitat Politècnica de València, 2020-06-30)

[EN] In this paper we use high frequency multidimensional textual news data and propose an index of inflation news. We utilize the power of text mining and its ability to convert large collections of text from unstructured ...
Modelado de temas en documentos de texto: análisis comparativo de LSA, PLSA y LDA

Jiang, Linxi (Universitat Politècnica de València, 2023-09-25)

[ES] Este trabajo se centra en los modelos teóricos clásicos más representativos que han marcado el desarrollo del modelado de temas en la minería textual, razón por la cual se ha puesto el foco en el análisis de semántica ...