Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
Financial sentiment analysis : an NLP approach towards reputation management
Mini Dissertation (MIT (Big Data Science))--University of Pretoria, 2020.
Saved in:
| Other Authors: | |
|---|---|
| Format: | Thesis |
| Language: | English |
| Published: |
University of Pretoria
2022
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867613631957434368 |
|---|---|
| access_status_str | Open Access |
| author2 | Marivate, Vukosi |
| author_browse | Marivate, Vukosi |
| author_facet | Marivate, Vukosi |
| collection | Thesis |
| dc_rights_str_mv | © 2021 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Mini Dissertation (MIT (Big Data Science))--University of Pretoria, 2020. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/83178 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:39:13.632Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/83178 Financial sentiment analysis : an NLP approach towards reputation management Marivate, Vukosi michelle.terblanche@gmail.com Terblanche, Michelle UCTD Financial sentiment analysis Natural language processing (NLP) Corporate reputation South Africa (SA) Share price Mini Dissertation (MIT (Big Data Science))--University of Pretoria, 2020. Sentiment analysis as a sub- eld of natural language processing has received increased attention in the past decade enabling organisations to more effectively manage their reputation through online media monitoring. Many drivers impact reputation, however, this thesis focuses only the aspect of financial performance and explores the gap with regards to financial sentiment analysis in a South African context. Results showed that pre-trained sentiment analysers are least effective for this task and that traditional lexicon-based and machine learning approaches are best suited to predict financial sentiment of news articles. The study contributed to updating an existing sentiment dictionary and developing a full pipeline to filter data for financial topics and predict sentiment. Using a binary logistic regression model and a binary XGBoost classifier on both headlines and article content produced accuracies of >85%. The predicted sentiments correlated quite well with share price and highlighted the potential use of sentiment as an indicator of financial performance. Model generalisation was less acceptable due to the limited amount of training data used. Future work includes expanding the data set to improve general usability and contribute to an open-source financial sentiment analyser for South African data. Computer Science MIT (Big Data Science) Unrestricted 2022-01-12T06:00:01Z 2022-01-12T06:00:01Z 2021/04/13 2020 Mini Dissertation * A2021 http://hdl.handle.net/2263/83178 en © 2021 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | UCTD Financial sentiment analysis Natural language processing (NLP) Corporate reputation South Africa (SA) Share price Financial sentiment analysis : an NLP approach towards reputation management |
| title | Financial sentiment analysis : an NLP approach towards reputation management |
| title_full | Financial sentiment analysis : an NLP approach towards reputation management |
| title_fullStr | Financial sentiment analysis : an NLP approach towards reputation management |
| title_full_unstemmed | Financial sentiment analysis : an NLP approach towards reputation management |
| title_short | Financial sentiment analysis : an NLP approach towards reputation management |
| title_sort | financial sentiment analysis an nlp approach towards reputation management |
| topic | UCTD Financial sentiment analysis Natural language processing (NLP) Corporate reputation South Africa (SA) Share price |
| url | http://hdl.handle.net/2263/83178 |