Portland State University. Department of Computer Science
Term of Graduation
Date of Publication
Master of Science (M.S.) in Computer Science
1 online resource (xi, 85 pages)
As the amount of text generated across the internet continues to increase, developing methods for processing that text to glean valuable insights is paramount. Automatic text summarization is one such method that aims to provide a concise and representative summary of input text, allowing users access to the most salient points from a large amount of textual data. However, in working with these summaries, especially those generated from social media data, questions arise about not only the quality of a summary, but also its ability to reflect the diversity of user perspectives. This work examines the quality of summaries with regards to dialect-diversity, as measured for human-written summaries as well as for those generated automatically. Specifically, in this work, we perform an extensive analysis on a dialect-diverse Twitter dataset, DivSumm. Our analysis suggests that humans typically write fairly diverse summaries. In addition, we also note that automatic clustering algorithms generate fairly well-representative clusters. Given these insights we propose a novel clustering-based approach for generating extractive summaries from dialect-diverse social media data. Our approach generates superior summaries than baseline methods when evaluated via ROUGE metrics.
In Copyright. URI: http://rightsstatements.org/vocab/InC/1.0/ This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
Hudson, Aaron David, "Toward Analyzing the Diversity of Extractive Summaries" (2022). Dissertations and Theses. Paper 6080.