Essays about: "LDA U"

Found 3 essays containing the words LDA U.

  1. 1. Prospectus Content as Predictor of IPO Outcome: A topic model approach

    University essay from Lunds universitet/Statistiska institutionen; Lunds universitet/Nationalekonomiska institutionen

    Author : Christian Emidi; Sebastian Galan; [2022]
    Keywords : initial public offering; overpricing; signalling theory; topic model; Business and Economics;

    Abstract : It is beneficial for both investors and companies to avoid the detrimental consequences of overpricing during an initial public offering (IPO). Prospectuses are an important source of information for potential investors. READ MORE

  3. 2. Can We Predict Business Cycles With Natural Language Processing?

    University essay from Handelshögskolan i Stockholm/Institutionen för nationalekonomi

    Author : Albert Flak; [2020]
    Keywords : Business Cycles; Economic Narratives; Natural Language Processing NLP ; Latent Dirichlet Allocation LDA ; Word Embeddings;

    Abstract : For centuries, many economists have attempted to solve the puzzle of business cycles; what explains them, and is it possible to predict them? The great amount of electronically available textual data, together with the recent advancements in unsupervised natural language processing are bound to offer new ways of analysing these perennial questions. Inspired with the emergence of narrative economics as a new field of economic analysis, I propose a novel research design to computationally extract business cycle sentiment from textual data on economic expectations. READ MORE

  4. 3. Defects in ceria

    University essay from Institutionen för fysik, kemi och biologi

    Author : Marcus Gidby; [2009]
    Keywords : ceria; cerium dioxide; frenkel defects; oxygen defects; SOFC; DFT; density functional theory; first principles calculations; LDA U; VASP;

    Abstract : The solid oxide fuel cell (SOFC) technology has been under research since thelate 1950s, and most of the research has been on designs utilizing yttria stabilized zirconia (YSZ) as the electrolyte of choice. However, the SOFC technology has the major drawback of requiring high operation temperatures (up to 1000 degrees Celcius), so research of alternative materials have come into interest that would possibly require a lower working temperature without any significant loss of conductivity. READ MORE