TY - CONF T1 - Event-Based Text Visual Analytics T2 - VAST Challenge 2014 Y1 - 2014 A1 - Wang, Ji A1 - Lauren Bradel A1 - North, Chris KW - event extraction KW - Semantic interaction KW - sensemaking KW - topic modelling AB - We present an event-based approach for solving a directed sensemaking task in which we combine powerful information foraging tools with intuitive synthesis spaces to solve the VAST 2014 Mini-Challenge 1 (MC1). A combination of student-created and commericially available software are used to solve various aspects of the scenario. In addition to applying entitiy extraction and topic modelling, we enable the user to explore a large dataset using multi-model semantic interaction, which infers analytical reasoning from user actions to augment the data spatialization and determine what information should be presented and suggested to the user. Additionally, we visualize extracted topics using Tableau to construct a timeline of events surrounding the questions posed by the challen JF - VAST Challenge 2014 CY - Paris, France ER - TY - CONF T1 - Making Sense of Daily Life Data: From Commonalities To Anomalies T2 - VAST Challenge 2014 Y1 - 2014 A1 - Wang, Ji A1 - Peng Mi A1 - North, Chris KW - Geo-visualization KW - human information interaction KW - Intelligence Analysis KW - sense-makingloop KW - visualanalysis AB - We report the approach and results to solve the VAST 2014 Mini-Challenge 2 (MC2). Based on the commercial interactive visualization software Tableau, we follow the notional model of sensemaking loop for analysis of the massive multi-dimensional, multi-source and time-varying data sets in MC2. Our findings show that we can effectively identify the commonalities and anomalies to understand the GAStech employees' daily life. JF - VAST Challenge 2014 ER - TY - CONF T1 - ReCloud: Semantics-based Word Cloud Visualization of User Reviews T2 - Proceedings of the 2014 Graphics Interface Conference Y1 - 2014 A1 - Wang, Ji A1 - Zhao, Jian A1 - Guo, Sheng A1 - North, Chris A1 - Ramakrishnan, Naren JF - Proceedings of the 2014 Graphics Interface Conference T3 - GI '14 PB - Canadian Information Processing Society CY - Toronto, Ont., Canada, Canada SN - 978-1-4822-6003-8 UR - http://dl.acm.org/citation.cfm?id=2619648.2619674 ER - TY - CONF T1 - Towards Crowd-based Customer Service: A Mixed-initiative Tool for Managing Q&A Sites T2 - Proceedings of the 32Nd Annual ACM Conference on Human Factors in Computing Systems Y1 - 2014 A1 - Piccardi, Tiziano A1 - Convertino, Gregorio A1 - Zancanaro, Massimo A1 - Wang, Ji A1 - Archambeau, Cedric KW - a KW - crowdsourcing KW - customer care KW - mixed initiative KW - q&\#38 JF - Proceedings of the 32Nd Annual ACM Conference on Human Factors in Computing Systems T3 - CHI '14 PB - ACM CY - New York, NY, USA SN - 978-1-4503-2473-1 UR - http://doi.acm.org/10.1145/2556288.2557202 ER - TY - CONF T1 - Fisheye Word Cloud for Temporal Sentiment Exploration T2 - CHI '13 Extended Abstracts on Human Factors in Computing Systems Y1 - 2013 A1 - Wang, Ji A1 - Dent, Kyle A1 - North, Chris KW - sentiment analysis KW - temporal twitter data analysis KW - user study KW - word cloud JF - CHI '13 Extended Abstracts on Human Factors in Computing Systems T3 - CHI EA '13 PB - ACM CY - New York, NY, USA SN - 978-1-4503-1952-2 UR - http://doi.acm.org/10.1145/2468356.2468673 ER - TY - JOUR T1 - An image-space energy-saving visualization scheme for \{OLED\} displays JF - Computers & Graphics Y1 - 2013 A1 - Haidong Chen A1 - Wang, Ji A1 - Weifeng Chen A1 - Huamin Qu A1 - Wei Chen KW - Illustrative visualization VL - 38 UR - http://www.sciencedirect.com/science/article/pii/S0097849313001611 ER - TY - UNPB T1 - {GreenVis : Energy-Saving Color Schemes for Sequential Data Visualization on OLED Displays} Y1 - 2012 A1 - Wang, Ji A1 - Lin, Xiao A1 - North, Chris KW - color scheme KW - energy saving KW - oled display KW - optimization PB - Department of Computer Science, Virginia Tech CY - Blacskburg, VA UR - http://eprints.cs.vt.edu/archive/00001192/ ER -