Essays about: "dictionary approach"

Showing result 16 - 20 of 28 essays containing the words dictionary approach.

  1. 16. Predicting Tesla Stock Return Using Twitter Data - An Intraday View on the Relation between Twitter Dimensions and the Tesla Stock Return

    University essay from Lunds universitet/Nationalekonomiska institutionen

    Author : Gustav Edman; Martin Weishaupt; [2020]
    Keywords : Sentiment; Tesla; Twitter; Support Vector Machine; VADER.; Business and Economics;

    Abstract : In this thesis, Twitter data is used to predict the intraday stock return for Tesla, Inc. We present two different methods to extract the tweets’ sentiment: A dictionary-based approach (VADER) and a machine learning approach (SVM). Additionally, we control for other dimensions as the user and discussion dimension. READ MORE

  3. 17. Efficient Estimation of Decaying Sinusoids with Application in NMR Spectroscopy

    University essay from Lunds universitet/Matematisk statistik

    Author : Martin Jälmby; [2018]
    Keywords : decaying sinusoids; semi-parametric methods; wideband dictionary; NMR spectroscopy; Mathematics and Statistics;

    Abstract : In this thesis, the Wideband Sparse Exponential Mode Analysis (WSEMA) estimator is introduced. It combines two recently developed techniques, the wideband dictionary and the Sparse Exponential Mode Analysis (SEMA) to make for an efficient estimator. READ MORE

  4. 18. The factors behind the success of Swedish entrepreneurs : A quantitative approach of Swedish entrepreneurs, with an international comparison of the years 1800-2012.

    University essay from Linköpings universitet/Nationalekonomi

    Author : Fahmi Yusuf; Ella Sipek; [2018]
    Keywords : Entrepreneurship; Entrepreneurial Success; Success factors of entrepreneurship; Factor Analysis; Cluster Analysis;

    Abstract : The entrepreneur as an economic agent is highlighted as being important by several researchers, mainly through their contribution to innovation and economic development. Yet there is no universal definition of what is characterized as being an entrepreneur. READ MORE

  5. 19. Social media sentiment analysis for firm's revenue prediction

    University essay from Uppsala universitet/Informationssystem

    Author : Ioanna Dimadi; [2018]
    Keywords : Social media; Facebook; Twitter; Sentiment analysis; VADER; Linear regression;

    Abstract : The advent of the Internet and its social media platforms have affected people’s daily life. More and more people use it as a tool in order to communicate, exchange opin-ions and share information with others. However, those platforms have not only been used for socializing but also for expressing people’s product preferences. READ MORE

  6. 20. Affect analysis for text dialogue in movies

    University essay from Uppsala universitet/Institutionen för informationsteknologi

    Author : Viktor Palerius; [2017]
    Keywords : ;

    Abstract : With the surge of services offering video-on-demand through streaming and the increased competition in the field, the need for the provider of the service to be able to fit its content to its users is important. Machine learning can be utilized to in an automatic fashion find user or movie patterns by looking at features from its data. READ MORE