Big data analysis in humanities and economics with machine learning techniques and use of cloud computing technologies

Sentiment Analysis has been extensively investigated in recent years as a method of human emotions’ classification to specific events, products, services etc. It is considered as a very important problem, especially for organizations or companies who want to know the consumers’ view about their pro...

Πλήρης περιγραφή

Λεπτομέρειες βιβλιογραφικής εγγραφής
Κύριος συγγραφέας: Θεοδωρακόπουλος, Λεωνίδας
Άλλοι συγγραφείς: Theodorakopoulos, Leonidas
Γλώσσα:English
Έκδοση: 2022
Θέματα:
Διαθέσιμο Online:http://hdl.handle.net/10889/15876
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spelling nemertes-10889-158762022-09-05T14:04:28Z Big data analysis in humanities and economics with machine learning techniques and use of cloud computing technologies Ανάλυση δεδομένων μεγάλου όγκου ανθρωπιστικών και οικονομικών επιστημών με τεχνικές μηχανικής μάθησης και χρήση τεχνολογιών υπολογιστικού νέφους Θεοδωρακόπουλος, Λεωνίδας Theodorakopoulos, Leonidas Apache Spark Big data Supervised machine learning Sentiment analysis Μεγάλα δεδομένα Ανάλυση συναισθήματος Sentiment Analysis has been extensively investigated in recent years as a method of human emotions’ classification to specific events, products, services etc. It is considered as a very important problem, especially for organizations or companies who want to know the consumers’ view about their products and services. In combination with the evolution of social media, it has been established as an interesting domain of research. Through social media, people tend to express their opinions or feelings, such as happiness or sadness on a daily basis. Thus, the vast amount of available data has made the existing solutions inappropriate and the need for automated analysis methods is imperative. In this thesis, it was examined sentiment polarity analysis on Twitter data in a distributed environment, known as Apache Spark. More specially, in this thesis are propose three classification algorithms for tweet level sentiment analysis in Spark due to its suitability for Big Data processing against its predecessors, MapReduce and Hadoop. Also The research to study the effects of economic policy uncertainty on the return volatility of stock with data from the largest banking institutions in Greece. Volatility is constructed using intraday data, the research period extends over a period of about thirteen years, more specifically from January 5, 2001, to June 30, 2014. This period contains various phases of the market such as stock market crashes along with stock market booms (e.g. the financial crisis of 2007 and 2008 in the United States, and the European sovereign debt crisis). The estimated regressions were used to indicate the direct effects of economic policy uncertainty on the return volatility of the stock in the four large Greek banks. Volatility is constructed based on intraday data, whereas four different estimators of volatility were used. 2022-03-01T07:45:08Z 2022-03-01T07:45:08Z 2022-02-16 http://hdl.handle.net/10889/15876 en application/pdf
institution UPatras
collection Nemertes
language English
topic Apache Spark
Big data
Supervised machine learning
Sentiment analysis
Μεγάλα δεδομένα
Ανάλυση συναισθήματος
spellingShingle Apache Spark
Big data
Supervised machine learning
Sentiment analysis
Μεγάλα δεδομένα
Ανάλυση συναισθήματος
Θεοδωρακόπουλος, Λεωνίδας
Big data analysis in humanities and economics with machine learning techniques and use of cloud computing technologies
description Sentiment Analysis has been extensively investigated in recent years as a method of human emotions’ classification to specific events, products, services etc. It is considered as a very important problem, especially for organizations or companies who want to know the consumers’ view about their products and services. In combination with the evolution of social media, it has been established as an interesting domain of research. Through social media, people tend to express their opinions or feelings, such as happiness or sadness on a daily basis. Thus, the vast amount of available data has made the existing solutions inappropriate and the need for automated analysis methods is imperative. In this thesis, it was examined sentiment polarity analysis on Twitter data in a distributed environment, known as Apache Spark. More specially, in this thesis are propose three classification algorithms for tweet level sentiment analysis in Spark due to its suitability for Big Data processing against its predecessors, MapReduce and Hadoop. Also The research to study the effects of economic policy uncertainty on the return volatility of stock with data from the largest banking institutions in Greece. Volatility is constructed using intraday data, the research period extends over a period of about thirteen years, more specifically from January 5, 2001, to June 30, 2014. This period contains various phases of the market such as stock market crashes along with stock market booms (e.g. the financial crisis of 2007 and 2008 in the United States, and the European sovereign debt crisis). The estimated regressions were used to indicate the direct effects of economic policy uncertainty on the return volatility of the stock in the four large Greek banks. Volatility is constructed based on intraday data, whereas four different estimators of volatility were used.
author2 Theodorakopoulos, Leonidas
author_facet Theodorakopoulos, Leonidas
Θεοδωρακόπουλος, Λεωνίδας
author Θεοδωρακόπουλος, Λεωνίδας
author_sort Θεοδωρακόπουλος, Λεωνίδας
title Big data analysis in humanities and economics with machine learning techniques and use of cloud computing technologies
title_short Big data analysis in humanities and economics with machine learning techniques and use of cloud computing technologies
title_full Big data analysis in humanities and economics with machine learning techniques and use of cloud computing technologies
title_fullStr Big data analysis in humanities and economics with machine learning techniques and use of cloud computing technologies
title_full_unstemmed Big data analysis in humanities and economics with machine learning techniques and use of cloud computing technologies
title_sort big data analysis in humanities and economics with machine learning techniques and use of cloud computing technologies
publishDate 2022
url http://hdl.handle.net/10889/15876
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