2024
Association Between Immigrant Concentration and Mental Health Service Utilization in the United States Over Time: A Geospatial Big Data Analysis, 5th National Big Data Health Science Conference, February 2-3, 2024, Columbia, South Carolina (Li Z., Jing F., Ning H., Qiao S., Li X.)
Estimating Hourly Neighborhood Population Using Mobile Phone Data, 5th National Big Data Health Science Conference, February 2-3, 2024, Columbia, South Carolina (Ning H., Li Z., Yu M.)
Using ChatGPT-4 in literature review: A validation pilot study in the areas of HIV medicine adherence, February 2-3, 2024, Columbia, South Carolina (Lessani M.N., Li Z., Qiao S., Ning H., Aggarwal A., Yuan G., Pasha A.)
Multi-Level Risk Factors of Late Presentation with Advanced HIV Disease and Delay Time, 2005-2019, Conference on Retroviruses and Opportunistic Infections (CROI), March 3 – 6, 2024, Denver, Colorado. (Shi F., Zhang J., Chen S., Yang X., Li Z.)
Association of structural racism and other social determinants of health with HIV late presentation: A county-level analysis in Southern United States, AIDS 2024, the 25th International AIDS Conference, Munich, Germany, July 22-26, 2024. (Shi F., Zhang J., Chen S., Yang X., Li Z., Weissman S., Olatosi B., Li X.).
Guest lecture: Social Sensing and Big Data Computing for Disaster Management, in GEOG 497: Weather Risk (Instructor: Dr. Helen Greatrex), Feb. 12, 2024
2023
Activity-based food environment and cardiometabolic health: A national observational study, APHA 2023 Annual Meeting and Expo, Nov. 12 – 15, 2023, Atlanta. (Xu R., Huang X., Zhang K., Lyu W., Caspi C., Ghosh D., Li Z., Chen X.)
Using Mobile Location Big Data to Improve Health Measure Estimation, SBE CCC 2023 Annual Meeting, September 21, 2023, Washington DC. (Li Z.)
Harnessing Geospatial Big Data and Spatial Computing for GIScience Innovations, Seminar, Wuhan University, July 16, 2023 (Li Z.) (invited)
Measuring Human Mobility with Big Geosocial Data: Challenges and Approaches, The 3rd ISDE International Lectures, March 21, 2023. (Li Z.) (invited)
Estimating first floor elevation for building flooding risk assessment using street view image, AAG Annual Meeting, March 23-27, 2023, Denver. (Ning H. Li Z., Ye X.)
A census-tract level examination of the association between immigrant proportions and mental health service utilization in the United States from 2019 to 2021. AAG Annual Meeting, March 23-27, 2023, Denver. (Jing F., Li Z., Qiao S.)
Residential segregation as a barrier to covid-19 booster coverage in deep south, Conference on Retroviruses and Opportunistic Infections (CROI), February 19-22, 2023, Seattle, Washington (Zeng C., Zhang J., Li Z., Sun X., Ning H., Yang X., Weissman S., Olatosi B., Li X., Liang C.)
A universal framework for object localization and measurement based on street view imagery data, March 23-27, 2023, Denver. (Ning H., Li Z.)
Spatiotemporal analysis of anti-Asian hate on social media in the United States, AAG Annual Meeting, March 23-27, 2023, Denver. (Hohl A., Horse A., Median R., Wan N., Wen M., Huang X., Li Z.)
Black Business Matter: A Longitudinal Study of Black-Owned Restaurants in the COVID-19 Pandemic Using Geospatial Big Data, AAG Annual Meeting, March 23-27, 2023, Denver. (Huang X., Bao X., Li Z., Zhang S., Zhao B.)
Using Social Media and Place Visitation Data for Public Health Research– Applications, Challenges, and Innovation Opportunities, 4th Annual National Big Data Health Science Conference, Feb. 10-11, 2023, Columbia, SC (Li Z.)
Using smartphone-based place visitation big data to improve health measure estimation, Feb. 10-11, 2023, Columbia, SC (Ning H., Li Z., Jing F.)
Disparities in mental health service utilization among immigrants in the US : A geospatial big data analysis, Feb. 10-11, 2023, Columbia, SC (Jing F., Li Z., Qiao S.)
Place visitation data reveals the geographic and racial disparity of COVID-19 impact on HIV facility utilization in Deep South, Feb. 10-11, 2023, Columbia, SC (Qiao S., Li Z., Ning H.)
Zain A., Li Z., Liang C., Diffusion of polarized information on Twitter and vaccination behaviors: Understanding intertwined role of emotions and moralization, 73rd Annual International Communication Association Conference.
Jing F., Li Z., Qiao S., A census-tract level examination of the association between immigrant proportions and mental health service utilization in the United States from 2019 to 2021. AAG Annual Meeting, March 23-27, 2023, Denver.
Lessani N, Li Z., A parallel genetic algorithm for multiple geographical features label placements. AAG Annual Meeting, March 23-27, 2023, Denver.
Fulham A., Ning H., Li Z., Sentiment Analysis of Swedish and Finnish Twitter Users’ Views Toward NATO Pre- and Post- 2022 Russian Reinvasion of Ukraine. AAG Annual Meeting, March 23-27, 2023, Denver.
2022
Using mobile device data to track the effects of the COVID-19 pandemic on spatiotemporal patterns of national park visitation, 77th Annual Meeting of the Southeastern Division of the AAG. Atlanta, Georgia, November 20-21, 2022 (Kupfer J., Li Z., Ning H., Huang X.)
Place visitation data reveals the geographic and racial disparity of COVID-19 impact on HIV facility utilization in Deep South, The 150th APHA Annual Meeting, Boston, MA, Nov 6-9, 2022. (Li Z., Qiao S., Ning H., Zhang J., Olatosi B., Li X)
Association of county-level social vulnerability with COVID-19 testing: The case of South Carolina in the United States, The 150th APHA Annual Meeting, Boston, MA, Nov 6-9, 2022. (Shi F., Zhang J., Olatosi B., Li Z., Li X)
Integrating human mobility data with SEIR model to analyze COVID-19 spreading in South Carolina, The 150th APHA Annual Meeting, Boston, MA, Nov 6-9, 2022. (Ning H., Li Z., Qiao S., Zhang J., Olatosi B., Li X)
Sidewalk extraction based on street view image, The 29th International Conference on Geoinformatics, Aug. 15-18, Beijing. (Ning H., Li Z., Wang C., Hodgson M., Huang X., Li X.)
Place connectivity moderates the association between concentrated disadvantage and COVID-19 deaths in the contiguous US, The 29th International Conference on Geoinformatics, Aug. 15-18, Beijing. (Jing F., Li Z., Qiao S., Zhang J., Olatosi B., Li X.)
Using Social Media Big Data for Public Health: A Geospatial Perspective, BDHSC Webinar for R25 fellows, July 26, 2022. (Li Z.) (invited)
Modeling Place-Place Connectiveness with Social Media, MobiLab Seminar Series: Doing Digital Humanities, University of Padua, Italy, Spring 2022 (by Li Z. and Hodgson M.) (invited)
Converting street view images to land cover maps for metric mapping using AI: a case study on sidewalk network extraction for the wheelchair users, AAG 2022, Feb. 25-Mar. 1, 2022, New York City (Ning H., Li Z., Wang C., Hodgson M., Huang X., Li X.)
Event detection method with principal component analysis-based sensor placement, AAG 2022, Feb. 25-Mar. 1, 2022, New York City (Jiang Y., Popov A., Li Z.)
Measuring Human Mobility Dynamics and Place Connectivity Using Big Social Media Data, AAG 2022, Feb. 25-Mar. 1, 2022, New York City (Li Z.)
Spatiotemporal changes in visitation to U.S. national parks and associated social inequity: A big data approach, AAG 2022, Feb. 25-Mar. 1, 2022, New York City (Lu J., Huang X., Kupfer, Xiao X., Li Z.)
An analytical framework to evaluate the effect of COVID-19 on the restaurant industry: a study of New York City, International symposium on Geospatial approaches to combating Covid-19, ICC 2021, Dec.13-14, 2021, Florence, Italy (Wang S., Wang R., Huang X., and Li Z.)
CyberGIS-enabled spatial epidemiology, Symposium on Data-Intensive Geospatial Understanding in the Era of AI and CyberGIS, AAG 2022, Feb. 25-Mar. 1, 2022, New York City (Li Z.) (invited panelist presentation)
2021
Zeng C., Zhang J., Li Z., Sun X., Yang X., Olatosi B., Weissman S., Li X, Spatial-temporal relationship between population mobility and COVID-19 outbreaks in South Carolina: A time series forecasting analysis, American Public Health Association (APHA) Annual Meeting, Oct 24-27, Denver, CO, USA
Shi F., Zhang J., Li Z., Zeng C., Sun X., Olatosi B., Weissman S., Li X., Geospatial difference in linkage to care among HIV population in South Carolina from 2010 to 2016: A county-level longitudinal analysis, American Public Health Association (APHA) Annual Meeting, Oct 24-27, Denver, CO, USA
Zeng C., Zhang J., Li Z., Sun X., Olatosi B., Weissman S., Li X., Population mobility and health disparities in COVID-19 outbreaks in deep south: A county-level longitudinal analysis, American Public Health Association (APHA) Annual Meeting, Oct 24-27, Denver, CO, USA
Zeng C., Zhang J., Li Z., Sun X., Olatosi B., Weissman S., Li X., Dynamic relationship between population mobility and COVID-19 incidence in South Carolina: Practical application of time-varying effect model to surveillance data, American Public Health Association (APHA) Annual Meeting, Oct 24-27, Denver, CO, USA
Li Z., Big Social Media Analytics: Approaches and Applications, Geoinformatics 2021 (CPGIS Annual Conference), August 8-10, 2021
Li Z., Measuring human mobility using Twitter data, Geoinformatics 2021 (CPGIS Annual Conference), August 8-10, 2021
Li Z., Big Social Media Data to measure place connectivity and human mobility dynamics. IJGI IWebinar on “Social Computing for Geographic Information Science”, Institute for Research on Population and Social Policies, Italy National Research Council, July 9, 2021
Li Z., Measuring Human Mobility Dynamics and Place Connectivity Using Big Social Media Data, Oak Ridge National Laboratory GSHS Division Director Seminar Series, June 24, 2021
Li Z., Panelist on the AAG Panel on Spatiotemporal analytics on COVID-19, 2021 AAG Annual Conference (along with Michael Batty, Kathleen Stewart, Xun Shi, Laura Cline), April 9, 2021 (online)
Li Z., Fighting the Pandemic with Big Movement Data: Our Approaches, 2021 AAG Annual Conference, April 9, 2021 (online)
Li Z., Measuring place connectivity using big social media data, CPGIS Educational Webinar Series. “Spatiotemporal Study of Urban Dynamics”, Mar 25, 2021
Li Z., Monitoring the Spatial Spread of COVID-19 and Effectiveness of the Control Measures through Human Movement using Big Social Media Data, SC Big Data Health Science Center Conference 2021, Online, Feb. 05, 2021
Li Z., Using Big Movement Data in the Pandemic: Methods and Applications, MDPI Webinar on GIS and Remote Sensing, Jan. 16, 2021
2020
Li Z., Fighting the COVID-19 Pandemic with Big Movement Data, The 1st Renmin University of China (RUC) Workshop on AI for Social Good, 12/19/2020, http://stat.ruc.edu.cn/displaynews.php?id=6053
Zeng C, Zhang J., Sun X., Li Z., Weissman S., Olatosi B., Li X., Contextual factors with county-level retention in care status among people living with HIV in South Carolina from 2005 to 2016, APHA’s 2020 Annual Meeting and Expo, Oct. 24 – 28, 2020, San Francisco, CA, USA
Li Z., Following the Pandemic on Twitter: A Big Data Approach, CAS Public Online Events, July 28, 2020
Li Z., Social Sensing and Big Data Analytics: from Disaster Management to Public Health, Online Guest Lecture, Webinar on Robotics, A I& Big Data and Smart Materials & Nanotechnology, July 20, 2020 https://online.fliphtml5.com/uxfiv/vyog/#p=25
Li Z., Disaster Management based on Social Sensing Big Data Computation, Online Guest Lecture, Wuhan University, July 6, 2020
Li Z., Social Media (Twitter) Big Data, Human Mobility, and COVID-19, Webinars on Data Introduction, July 1, 2020, ppt available at Harvard Dataverse https://dataverse.harvard.edu/file.xhtml?persistentId=doi:10.7910/DVN/5PRYPC/SUYWJ2&version=7.0
Martin Y., Li Z., Ge Y., Towards real-time population estimates: introducing Twitter daily estimates of residents and non-residents at the county level, 2020 Annual Meeting of the Population Association of America, April, 22 – 25, 2020 in Washington, DC, USA (virtually)
Li Z., Understanding Human Dynamics During Disasters with Geospatial Big Data Analytics and Computing, South Carolina Association for Hazard Mitigation Conference, Greenville, SC, March 2-4, 2020
Li Z., Social Sensing and Big Data Computing: from Disaster Management to Public Health, Spring Seminar Series, Department of the Environmental Health Sciences, USC, February 19, 2020
Jiang Y., Li Z., Cutter S., Understanding Human Mobility Pattern During Hurricane Evacuation with Social Media, Big Data Health Science Conference, February 9-11, 2020
Li Z., Leveraging Social Media Data for Disaster Management: Challenges and Applications, Big Data Health Science Conference, February 9-11, 2020
2019
Li Z., Social Sensing and Big Data for Disasters, China University of Petroleum, China, Nov. 25, 2019
Li Z., Big Data Analytics for Geospatial Applications, Heilongjiang Bureau of Surveying and Mapping, Harbin, China, July 19, 2019
Li Z.,Social Sensing and Big Data Computing for Disaster Management: Challenges and Solutions, LIESMARS, Wuhan University, Wuhan, China, July 17, 2019
Li Z., Using Social Media Analytics for Enhancing Situational Awareness, Institute of Remote Sensing and Digital Earth, Beijing, China, June 20, 2019
Li Z., A Scalable Online Visual Analytic System for Big Climate Data Analysis, ESIP Cloud Computing Group Webinar (lightning talk), May 5, 2019
Li Z., Ning H., Using existing data to build customized deep learning training datasets for remote sensing image classification, AAG Annual Meeting, Washington DC, April 3-7, 2019
Li Z., Panel Introductory Talk : Social Sensing and Big Data Computing for Disaster Management, AAG Annual Meeting, Washington DC, April 3-7, 2019
Li Z., Social Media for Disaster Management, presentation in Social Media Analytics Tool Development Panel, AAG Annual Meeting, Washington DC, April 3-7, 2019
Jiang Y., Li Z., Analyzing Human Mobility Patterns during Hurricane Matthew Evacuation using Twitter, AAG Annual Meeting, Washington DC, April 3-7, 2019
Hodgson M., Li Z., Piovan S., Koylu C., Language and Twitter-based Social Media During Disaster Events, AAG Annual Meeting, Washington DC, April 3-7, 2019
Huang X., Li Z., Wang C., Identifying disaster related social media for rapid response: a visual-textual fused approach, AAG Annual Meeting, Washington DC, April 3-7, 2019
Martin Y., Cutter S.L., Li Z., Emrich C., Mitchell J., Tracking The Disruption Of Hurricane Maria On Population Movements In Puerto Rico Through Geotagged Tweets, AAG Annual Meeting, Washington DC, April 3-7, 2019
2018
Li, Z., WebGIS tools and applications in Public Health, November 27, 2018, Arnold School of Public Health, USC (Invited guest lecture)
Li, Z., High performance computing for geospatial big data analytics, November 9, 2018, Department of Geography & Earth Sciences, University of North Carolina at Charlotte (invited colloquium talk)
Li, Z., Geospatial Big Data: Challenges, Opportunities and Applications, 2018 GIS Day at USC November 14, 2018
Jiang Y., Li Z., Ye X., Measuring inter-city network using digital footprints from Twitter users, ACM SIGSPATIAL International Workshop on PredictGIS, 11/06/2018, Seattle, Washington
Li, Z., Big data, social media and evacuation, New Generation GIS Workshop, October 11, 2018, Center for Geographic Analysis, Harvard University, (invited)
Hu L., Ye X., Li Z., Neighborhood characteristics and activity space: a new application of social media data, 58th Annual ACSP Conference, October 25-28, 2018, Buffalo, New York
Li, Z., Social Media and Big Data Computing for Disaster Management, South Carolina Association for Hazard Mitigation (SCAHM) Annual Conference, March 12-14, 2018, Hilton Head Island, SC (Invited plenary talk)
Li, Z., Huang, Q., Jiang, Y., Hu, F., SCOVAS: A Scalable Climate Online Visual Analytical System, AAG Annual Meeting April 10-14 2018, New Orleans
Jiang, Y., Li, Z., Understanding Evacuation Decision based on Twitter Network, AAG Annual Meeting April 10-14 2018, New Orleans
Ning, H., Li, Z., Build customized deep learning training dataset for remote sensing image classification, AAG Annual Meeting, April 10-14 2018, New Orleans
Hodgson, M., Li, Z., Piovan, S., Davis, B., The Use of Social Media in Guiding Satellite Image Collection During Disaster Events, AAG Annual Meeting, April 10-14 2018, New Orleans
Huang, X., Wang, C., Li, Z., A Flooding Probability Reconstruction Approach by Enhancing Near Real-Time (NRT) Imagery with Real-Time (RT) Data, AAG Annual Meeting, April 10-14 2018, New Orleans
2017
Li Z., Jiang Y., Social Media, Human Movement, and the Eclipse, Public Mini-lecture on the Eclipse at Russel House Theater, August 21, 2017, USC (invited)
Li Z., Enhancing Situational Awareness by Mining Big Social Media Data in Near-real Time for Disaster Management, 3rd World Congress on GIS and Remote Sensing, September 20 – 21, 2017, Charlotte, NC. (invited)
Li Z., Hu F., A Cloud-based Spatial Web Portal for Big Earth Data Visual Analytics (in Research as Art session), ESIP Summer Meeting, July 25-28, 2017, Bloomington, IN.
Li Z., A Scalable Online System for Parallel Query Analytics or Big Climate Data, The 28th International Cartographic Conference, July 2-7, 2017, Washington DC
Li Z., Computing and GIScience, Seminar at the Department of Computing Sciences, Coastal Carolina University, June 26, 2017 (invited)
Li Z., Mining Big Twitter Data to Enhance Disaster Situational Awareness, Seminar at South Carolina Smartstate Center for Health Care Quality, April 28, 2017 (invited)
Li Z., Geospatial Big Data Analytics with High Performance Computing, Symposium on Research Computing Infrastructure, April 14, 2017, University of South Carolina
Li Z., Hodgson M., Li W., A General-purpose Framework for Parallel Processing of Large-scale LiDAR Data, AAG Annual Meeting, Boston, April 05-09, 2017
Martin Y., Li Z., Cutter S., Leveraging Twitter to gauge evacuation compliance: spatiotemporal analysis of Hurricane Matthew, AAG Annual Meeting, Boston, April 05-09, 2017
Wang C., Li Z., Huang X., Geospatial assessment of flooding dynamics and risks of the October’15 South Carolina Flood, The 25th International Conference on Geoinformatics, Aug 2-4, 2017, Buffalo, NY, USA
Huang X., Wang C., Li Z., A Near Real-time Flood Mapping Approach by Integrating Post-event with Satellite Imagery and Flood-related Tweets, The 25th International Conference on Geoinformatics, Aug 2-4, 2017, Buffalo, NY, USA
Hu F., Yang C., Xu M., Li Z., Schnase J., Duffy D., Bowen M., ClimateSpark: An In-memory Distributed Computing Framework for Big Climate Data Analytics, AAG Annual Meeting, Boston, April 05-09, 2017
2016
Li Z., Hodgson M., Li W., A General-purpose Framework for Parallel Processing of Large-scale LiDAR Data, AGU Fall Meeting, San Francisco, 12-16, December 2016
Li Z., Huang Q., Carbone G., Hu F., A High Performance Spatiotemporal Query Analytical Framework for Large-scale Climate Data Analysis, SEDAAG, Columbia, SC, November 20-22, 2016
Li Z., Wang C., Emrich C., Guo D., Leveraging Social Media for Rapid Mapping of 2015 South Carolina Floods, SC Floods Conference, November 18, Columbia, SC
Hu F., Yang C., Duffy D., Schnase J., Li Z., ClimateSpark: An In-memory Distributed Computing Framework for Big Climate Data Analytics, AGU Fall Meeting, San Francisco, 12-16, December 2016
Karami A., Li Z., A Computational Framework for Tracking Reports, Opinions and Feelings of People in Social Media Before, During and After a Natural Disaster, SC Floods Conference, November 18, Columbia, SC
Li Z., BigQuery: Parallel Query Analytics of Big Climate Data, 2016 International Workshop on Cloud Computing and Big Data, Fairfax, Virginia, July 26 – 27, 2016 (invited)
Li Z., Wang C., Emrich C., Guo D., Rapid Flood Mapping with Social Media and Remote Sensing. South Carolina October ’15 Flood Workshop Understanding the Path to Resilience, Adaptation and Recovery, Columbia, SC, June 15, 2016. (invited)
Wang C., Li Z., Emrich C., Remote Sensing of Flooding Dynamics, Congaree River Watershed. South Carolina October ’15 Flood Workshop Understanding the Path to Resilience, Adaptation and Recovery, Columbia, SC, June 15, 2016.
Panelist, “HPC and Big Data Challenges at USC” session at the Symposium on Research Computing Infrastructure. USC, April 15, 2016. (invited)
2015
Li Z., Hu F., Schnase J., et al., A spatiotemporal indexing approach for efficient process of big array-based climate data with MapReduce. International Symposium on Spatiotemporal Computing, Fairfax, Virginia, July 13-15th, 2015
Yu M., Yang C., and Li Z., 2015. “Enabling the acceleration of dust simulation using job scheduling method in a cloud environment”, Geocomputation, Dallas, TX, USA.
Hu F., Li Z., and Yang C., 2015. “An Index for Efficient Retrieval and Process of Big Array-based Geospatial Data in Hadoop Distributed File System”, AAG, Chicago, IL, USA.
Li Z., Yang C., et al. Enabling Big Climate Data Processing with a Cloud-based Workflow Framework. AAG annual meeting, Chicago, IL. April 21 – 25, 2015
Li Z., Cloud Computing for Geospatial Data Sciences. 2015 Unidata Users Workshop, Boulder, Colorado. June, 22-25, 2015 (invited)
Hu F., Bowen M., Li Z., Schnase J., Duffy D., Lee T., and Yang C., A Columnar Storage Strategy with Spatiotemporal Index for Big Climate Data, 2015 AGU Fall Meeting. (poster)
Li Z., Cloud-based, workflow-enabled and service-oriented scientific workflow framework. ESIP winter Meeting, Washington DC. Jan. 06-09, 2015 (invited)
Before 2015
Li Z., Yang C., Liu K., A MapReduce-enabled Framework for Processing Big Climate Data, AAG annual meeting, Tampa, FL. 8-12, 2014
Li Z., Cloud Computing for Geosciences. ESIP Summer Meeting, Frisco, CO. Jul. 8-11, 2014 (invited)
Li Z., Sun Min., Jiang Y., Liu Kai. Climate@Home: Citizen Science for Climate Change (Robert Raskin Mashup Mapping Student Competition), AAG meeting, Los Angeles, CA. April 9-13, 2013
Li Z., Yang C., Sun M., Li J., Xu C., Huang Q., & Liu K. A High Performance Web-Based System for Analyzing and Visualizing Spatiotemporal Data for Climate Studies, AAG meeting, Los Angeles, CA. Apr. 9-13, 2013
Huang Q., Li Z., Yang C., Using MapReduce and cloud computing to support geospatial processing, AAG meeting, Los Angeles, CA. Apr. 9-13, 2013
Wu H., Li Z., Yang C., Quality-supported architecture for Geospatial Information Service, AAG meeting, Washington, DC Apr. 14-18, 2010
Li Z., Wu H., Yang C., Application Composition based on WMS Layers for Supporting Spatial Data Infrastructure, AGU Fall meeting, San Francisco, CA, Dec 14-1, 2009
Wu H., Li Z., Yang C., Real-time Monitoring of WMS Quality for Optimized Map Composition with Distributed WMS Layers, AGU Fall meeting, San Francisco, CA, Dec 14-1, 2009
Li Z., Huang Q., Li W. Zhu H., Yang C., Houser P., Larko M., Water and Energy Cycle EOS House web portal (WECHO), AAG meeting, Las Vegas, NV. Mar. 22-27, 2009
Li Z., Yang C., Li W., Li J., Huang Q., Zhou X., Earth Information Exchange: sharing the geospatial resources for Earth science and applications in an interoperable fashion, AAG meeting, Boston, Apr.18-23, 2008