1 / 11

Visualizing Survey Correlations: Efficient Data Exploration

This survey visualization project explores relationships between responses to various questions using correlation matrices. The proposed solution includes visually presenting questions and their correlations along a semi-circle for better understanding. Implementation relies on InfoVis Toolkit and Java 2D. Screenshots and how-to details provided. Need help with InfoVis toolkit usage, statistical calculations, or data input formats? Visit the source link for more information.

eaton-watts
Télécharger la présentation

Visualizing Survey Correlations: Efficient Data Exploration

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Survey Visualization Maria Tkatchenko CPSC 533C November 19, 2004

  2. Problem • Survey composed of • Questionnaire • Collected data • Want to explore relationships between responses to various questions • Correlation • Correlation matrix not efficient

  3. Data set • National Election Studies center’s pre- and post-election surveys • National Center for Chronic Disease Prevention and Health Promotion Behavioral Risk Factor survey • 1K - 100K respondents • 100s of questions (dimensions)

  4. Proposed solution (1) • A way to visually present • questions • correlation relationships between them • Would allow to answer questions that are very hard to do with the correlation matrix

  5. Proposed Solution (2) • Points representing questions positioned along a semi-circle • Correlation axis along diameter

  6. Tool • Implementation so far relies on InfoVis Toolkit and Java 2D • Found source that implements matrices and calculations for Spearman’s rank correlation coefficient • http://intrepid.mcs.kent.edu/~blewis/stat/index.html • Input data format • CSV, converted to InfoVis toolkit’s TQD format • simple parsers can be written to extend the tool to handle other formats, as well

  7. Screenshots (1)

  8. Screenshots (2)

  9. Questions?

  10. Challenges so far • InfoVis toolkit • Statistical calculations and matrix manipulations in Java • Statistical measures of multi-dimensional correlation

  11. Suggestions?

More Related