Presentations

2022

Modeling Place-Place Connectiveness with Social Media, MobiLab Seminar Series: Doing Digital Humanities, University of Padua, Italy, Spring 2022 (to be presented by Li Z. and Michael H.)

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.)

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)

2014

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)

2013

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

2010

Wu H., Li Z., Yang C., Quality-supported architecture for Geospatial Information Service, AAG meeting, Washington, DC Apr. 14-18, 2010

2009

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

2008

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

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