Faculty Sponsor

Gregg B. Johnson


Arts and Sciences


Data Science

Presentation Type

Poster Presentation

Symposium Date

Spring 5-1-2020


Sentiment Analysis on New York Times Coverage Data

Departmental Affiliation: Data Science/ Political Science

College of Arts and Sciences

The extant political science literature examines media coverage of immigration and assesses the effect of that coverage on partisanship in the United States. Immigration is believed to be a unique factor that induces large- scale changes in partisanship based on race and ethnicity. The negative tone of media coverage pushes non-Latino Whites into the Republican Party, while Latinos trend toward the Democratic Party. The aim for this project is to look at New York time data in order to identify how much immigration is covered in newspaper outlets, specifically Latino immigration, and to determine the overall tone of these stories.

In this research, we seek to determine individual articles take a positive, neutral or negative stance. We achieve this using a dictionary-based approach, meaning we look at individual words to assess if it has a positive, neutral or negative connotation. We train our data using publicly accessible sentiment dictionaries such as VADER (Valence Aware Dictionary and Sentiment Reasoner). However, this task can be difficult because certain words can be dynamic and may pertain to a positive or negative sentiment in context of the article. In order to resolve this issue, we use reliability measures to ensure that the words of high frequencies are in the correct sphere of negative, neutral, and positive light.

Information about the Author(s):

Faculty Sponsor(s): Professor Gregg B. Johnson and Professor Karl Schmitt

Student Contact: Gabriel Carvajal – gabriel.carvajal@valpo.edu

Biographical Information about Author(s)


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