Presentations

Implementing GeoAI with KNIME and its Geospatial Analytics Extension

Presentation Date: 

Tuesday, November 7, 2023

Location: 

CGIS South Building, Concourse level, S050

Presenter: Ru Wang

This presentation delves into the integration of GeoAI, especially on Geographic Random Forest, with KNIME, an open-source data analytics platform. The focus is on KNIME's Geospatial Analytics Extension, showcasing how it can be utilized to enhance spatial data analysis and processing. 

China, Data Lab, 2023, "Spatiotemporal Data Analysis with Codeless Visual Programming", https://doi.org/10.7910/DVN/I0AWAM, Harvard Dataverse, V1

Open Data Access with KNIME Extension: Dataverse, ArcGIS Living Atlas, Open Street Map

Presentation Date: 

Tuesday, November 7, 2023

Location: 

CGIS South Building, Concourse level, S050

Presenter: Xiaokang Fu

This presentation explores the capabilities of the KNIME platform in accessing and utilizing open data sources. Emphasis is on the KNIME extension’s seamless integration with diverse data repositories such as Harvard Dataverse, ArcGIS Living Atlas, and Open Street Map. The session aims to provide a comprehensive guide on leveraging these resources for enriching geospatial analysis and research with the support of KNIME and Geospatial Analytics Extension for KNIME.

China, Data Lab, 2023, "Spatiotemporal Data Analysis with Codeless Visual Programming", https://doi.org/10.7910/DVN/I0AWAM, Harvard Dataverse, V1

GIS x KNIME - Play Geospatial Analysis with the Ease of Building Blocks

Presentation Date: 

Tuesday, November 7, 2023

Location: 

CGIS South Building, Concourse level, S050

Presenter: Lingbo Liu

This presentation offers an engaging and accessible approach to geospatial analysis through the use of KNIME and Geosptial Analytics Extension. It focuses on simplifying GIS (Geographic Information Systems) processes with visual programming platform like KNIME, likening it to building with blocks, thereby making advanced spatial data analysis more approachable for users at all skill levels. It aims to demonstrate the versatility and user-friendliness of KNIME and its Geosptial Analytics Extension in handling complex GIS tasks.

China, Data Lab, 2023, "Spatiotemporal Data Analysis with Codeless Visual Programming", https://doi.org/10.7910/DVN/I0AWAM, Harvard Dataverse, V1

Introduction to the Spatial Data Lab project

Presentation Date: 

Tuesday, November 7, 2023

Location: 

CGIS South Building, Concourse level, S050

Presenter: Wendy Guan

This presentation sheds light on the Spatial Data Lab project, an initiative focusing on the exploration and utilization of spatotemporal data. It is aimed at providing a comprehensive overview of the project's objectives, methodologies, and potential impacts. The session is likely to cover various aspects of spatial data analysis, its applications, and how the project contributes to the broader field of geospatial research.

China, Data Lab, 2023, "Spatiotemporal Data Analysis with Codeless Visual Programming", https://doi.org/10.7910/DVN/I0AWAM, Harvard Dataverse, V1

Spatiotemporal Patterns of Forestland Change and Impacts on Carbon Storage in China

Presentation Date: 

Friday, March 24, 2023

Location: 

AAG 2023 Annual Meeting,Denver, CO
2319353 KB

Presenter: Zhen Wu

Carbon storage in terrestrial ecosystems and its changes have become the focus of research on climate and environmental changes, wherein forestland changes are the key driving factors affecting it. Studying the relationship between forestland change and carbon storage is helpful to better understand the impact mechanism of the ecosystem carbon cycle. Most of the previous studies in China have estimated a small area with different calculation methods, but the unified research method and standard for China's national research are lacking. This study takes China as a case study, we analyze the spatiotemporal change patterns of forestland and their impacts on carbon storage. The results show that the trends of forest land changes and its carbon storage are basically the same, which maintained an increasing trend. The regression analysis shows that China has increased the afforestation of artificial forests is the main reason. However, the increase of carbon storage in different regions was uneven, which was larger in regions with more afforestation and less logging, such as North China. This research is an important step in advancing China's goals of "Carbon Peaking" and "Carbon Neutrality”, and is also important for the understanding of the carbon cycle

Spatiotemporal Network Analysis of Cities in The Belt And Road Initiative Countries Based on Social Media Mobility Index

Presentation Date: 

Thursday, March 23, 2023

Location: 

AAG 2023 Annual Meeting,Denver, CO
2450852 KB

Presenter: Lingbo Liu 

The ongoing spread of COVID-19, the war in Ukraine and the intensification of extreme climate events around the world are changing the world, which is also affecting cities participating in the Belt and Road Initiative. However, there is still a lack of analysis of the spatiotemporal evolution of urban spatial networks, mainly due to the lack of corresponding high-precision population flow data. Based on mobility metrics derived from geotagged social media data, this paper applies network centrality analysis, network community detection models and Difference in Differences model (DID) to more than 26,000 cities in countries along the Belt and Road Initiative. The results show that there is obvious spatiotemporal heterogeneity in the network between cities within a country and the network between countries before and after the Pandemic. This result will provide support for BRI related research in the context of globalization.

Workflow Based Tools for Integrated Spatiotemporal Research

Presentation Date: 

Thursday, March 23, 2023

Location: 

AAG 2023 Annual Meeting,Denver, CO
2420051 KB

Presenter: Wendy Guan

In the era of the 4th industrial revolution, geolocation became ubiquitous, place and time are embedded in data generated by the Internet of Things. Geospatial and temporal data are everywhere, from Global Navigation Satellite Systems (GNSS), earth observation satellites, smart phones, clothes, cars, homes, cities, and more. However, how to effectively use these data in research to solve global problems remains a challenge. Conventional spatial data services often have high development cost and slow implementation cycles, require professional skills to maintain, lack the flexibility for supporting customizable inquiries and changing research themes, and are difficult to share with researchers from different fields with different skill levels. The Spatial Data Lab project (SDL) is aimed at solving the above problems by applying workflow based tools such as KNIME (an open-source system for workflow development) for the integration of heterogeneous data, replication of analytical procedures and simulation models, automation of visualization updates, web-based access to high performance computing, and making spatiotemporal research reproducible, replicable and expandable. The integrated solution includes data, tools, models, visualizable results, documentation and publications, packaged as case studies, allowing researchers of diverse backgrounds to find, learn, use, modify, improve, and re-contribute back to the Lab. This talk will present some recent development of the SDL project with KNIME as an exploratory effort towards an integrated solution for data services, analytical support, teaching & learning, and collaborative research applications, showcase the Geospatial Analytics Extension in KNIME, and discuss future directions of the project and collaboration opportunities.

GIS Moves Online: An Integrated Solution for Spatiotemporal Research, Teaching, and Applications

Presentation Date: 

Wednesday, March 15, 2023

Location: 

Cambridge, MA

Presenter: Lingbo Liu

This presentation delve into the transformative journey of Geographic Information Systems (GIS) as it transitions to the online realm, focusing on creating an integrated solution for spatiotemporal analysis on Chinese literati movement, particularly in the field of digital humanities research. The session highlights the pivotal role of the KNIME Analytics Platform and Server in building a comprehensive, user-friendly environment for spatial data processing and analysis.The talk promises to provide a comprehensive overview of how GIS, combined with the power of the KNIME platform and its geospatial extensions, is revolutionizing the field of digital humanities, making advanced spatiotemporal analysis more accessible and impactful than ever before.

File Link

Geospatial Analytics for All

Presentation Date: 

Tuesday, November 15, 2022

Location: 

Cambridge, MA
knime-fall-summit-2022-presentations55 KB

Presenters: Wendy Guan, Lingbo Liu and Tobias Koetter

Organizations around the world depend on geospatial data for site selection, supply chain optimization,  environment management, fraud detection and more. Historically, accessing and analyzing this invaluable data, however, has required niche expertise, demanding deep experience with a wide array of data sources and libraries, as well as coding skills. Harvard’s Center for Geographic Analysis & KNIME have teamed up to enable non-expert users to unlock the potential of geospatial data by accessing, blending and analyzing it through a no-code environment. This session will cover how  Harvard CGA and KNIME are working together to provide users not only a dedicated geospatial analysis extension but also reusable and reproducible data and blueprints to effortlessly use and adapt to their needs.

An Overview of Workflow Driven Spatiotemporal Simulation

Presentation Date: 

Saturday, June 25, 2022

Location: 

ONLINE

Lingbo Liu

A presentation for Data Science Training Webinars: Spatiotemporal Simulation (June 25)

This presentation contains the four main parts:(1) Why we need workflow-driven spatiotemporal simulation; (2) How the KNIME-based Geospatial Cyberinfrastructure plaform (K-GCI)  for workflow-driven spatiotemporal simulation is different; (3) What is the feature of K-GCI ;(4) An Example based on K-GCI framework.

 

Disparities in Telehealth Accessibility to Primary Care Physicians in Baton Rouge, Louisiana

Presentation Date: 

Thursday, June 16, 2022

Location: 

IQSS,Cambridge, MA

Lingbo Liu, Fahui Wang

The Spatial Data Lab team and collaborators gave a presentation on “Disparities in Telehealth Accessibility to Primary Care Physicians in Baton Rouge, Louisiana” in the fifth annual Politics and Computational Social Science (PaCSS) conference, which took place in a hybrid format on June 16-18, 2022 at Harvard University’s Institute for Quantitative Social Science (IQSS).

New Development of the Spatial Data Research and Teaching Platform

Presentation Date: 

Saturday, December 14, 2019

Location: 

Wuhan University, China
“New Development of the Spatial Data Research and Teaching Platform”, presented by Shuming Bao at the forum on “Spatial Data Analytics for Social Sciences” at Wuhan University, Dec 14, 2019.

China Data for Business

Presentation Date: 

Friday, December 6, 2019

Location: 

Pasadena, LA
“China Data for Business”, presented by Dr. Shuming Bao, at the annual conference on “IM DATA-Innovative Methods with Big Data and Artificial Intelligence” in Pasadena, LA on Dec 6, 2019.