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Unsub gives libraries richer and more nuanced data to analyze their subscriptions, but it does not include a way to easily visualize the complex and interrelated data points it provides. Unsub Extender (https:\/\/unsubextender.lib.iastate.edu) is a free Python-based web application that takes an Unsub export file and automates the creation of interactive plots and visualizations. The tool loads with example data to explore, and users upload their specific Unsub file to quickly populate the premade plots with actual data. Graphs are interactive and live updating and support zoom, click-and-drag, and hover. Filters are specified through sliders to model scenarios and focus on areas of interest. A drop-down menu allows users to change a journal\u2019s decision status, and graphs update automatically. After evaluating journals, users can export the modified data set to save their decisions. Unsub Extender proposes best practice in analyzing the increasingly common Unsub export file. It simplifies the analysis, eliminates duplication of effort, and enables libraries worldwide to make better, more data-driven decisions.<\/jats:p>","DOI":"10.1162\/qss_a_00200","type":"journal-article","created":{"date-parts":[[2022,7,6]],"date-time":"2022-07-06T14:46:29Z","timestamp":1657118789000},"page":"600-623","update-policy":"https:\/\/doi.org\/10.1162\/mitpressjournals.corrections.policy","source":"Crossref","is-referenced-by-count":3,"title":["Unsub Extender: A Python-based web application for visualizing Unsub data"],"prefix":"10.1162","volume":"3","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6292-8221","authenticated-orcid":true,"given":"Eric","family":"Schares","sequence":"first","affiliation":[{"name":"Engineering & Collection Analysis Librarian, Iowa State University"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"281","published-online":{"date-parts":[[2022,11,1]]},"reference":[{"key":"2022111422094431100_bib1","article-title":"Altair: Declarative visualizations in Python","author":"Altair Developers","year":"2021"},{"key":"2022111422094431100_bib2","article-title":"Awards","author":"ASEE ELD","year":"2022"},{"key":"2022111422094431100_bib3","article-title":"Graph 4: Expenditure trends in ARL university libraries, 1998\u20132018","author":"Association of Research Libraries","year":"2019"},{"key":"2022111422094431100_bib4","article-title":"ERA 2018 Journal List","author":"Australian Research Council","year":"2018"},{"issue":"26","key":"2022111422094431100_bib5","doi-asserted-by":"publisher","first-page":"9425","DOI":"10.1073\/pnas.1403006111","article-title":"Evaluating big deal journal bundles","volume":"111","author":"Bergstrom","year":"2014","journal-title":"Proceedings of the National Academy of Sciences of the United States of America"},{"key":"2022111422094431100_bib6","article-title":"Is the staggeringly profitable business of scientific publishing bad for science?","author":"Buranyi","year":"2017","journal-title":"The Guardian"},{"key":"2022111422094431100_bib7","doi-asserted-by":"publisher","DOI":"10.1126\/science.abd7483","article-title":"This tool is saving universities millions of dollars in journal subscriptions","author":"Chawla","year":"2020","journal-title":"Science"},{"key":"2022111422094431100_bib8","article-title":"Microsoft Academic Graph is being discontinued. 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